[PATCH net-next v2 00/11] bnxt_en: Implement new driver APIs to send FW messages

[PATCH net-next v2 00/11] bnxt_en: Implement new driver APIs to send FW messages

[Michael Chan]

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The current driver APIs to send messages to the firmware allow only one
outstanding message in flight.  There is only one buffer for the firmware
response for each firmware channel.  To send a firmware message, all
callers must take a mutex and it is released after the firmware response
has been read.  This scheme does not allow multiple firmware messages
in flight.  Firmware may take a long time to respond to some messages
(e.g. NVRAM related ones) and this causes the mutex to be held for
a long time, blocking other callers.

This patchset intoduces the new driver APIs to address the above
shortcomings.  The new APIs are compatible with new and old firmware.
But the new deferred firmware response mechanism will require newer
firmware in order to allow multiple outstanding firmware commands.

All callers are updated to use the new APIs.

v2: Patch 4 and patch 9 updated to fix issues reported by test robot

Edwin Peer (11):
  bnxt_en: remove DMA mapping for KONG response
  bnxt_en: Refactor the HWRM_VER_GET firmware calls
  bnxt_en: move HWRM API implementation into separate file
  bnxt_en: introduce new firmware message API based on DMA pools
  bnxt_en: discard out of sequence HWRM responses
  bnxt_en: add HWRM request assignment API
  bnxt_en: add support for HWRM request slices
  bnxt_en: use link_lock instead of hwrm_cmd_lock to protect link_info
  bnxt_en: update all firmware calls to use the new APIs
  bnxt_en: remove legacy HWRM interface
  bnxt_en: support multiple HWRM commands in flight

 drivers/net/ethernet/broadcom/bnxt/Makefile   |    2 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 2133 ++++++++---------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  105 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c |  185 +-
 .../net/ethernet/broadcom/bnxt/bnxt_devlink.c |   81 +-
 .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c |  548 +++--
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    |  763 ++++++
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    |  145 ++
 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c |  130 +-
 .../net/ethernet/broadcom/bnxt/bnxt_sriov.c   |  455 ++--
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c  |  264 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c |   31 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c |   62 +-
 13 files changed, 2906 insertions(+), 1998 deletions(-)
 create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
 create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h

-- 
2.18.1


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[PATCH net-next v2 01/11] bnxt_en: remove DMA mapping for KONG response

[Michael Chan]

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From: Edwin Peer <edwin.peer@broadcom.com>

The additional response buffer serves no useful purpose. There can
be only one firmware command in flight due to the hwrm_cmd_lock mutex,
which is taken for the entire duration of any command completion,
KONG or otherwise. It is thus safe to share a single DMA buffer.

Removing the code associated with the additional mapping will simplify
matters in the next patch, which allocates response buffers from DMA
pools on a per request basis.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 42 +++--------------------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 16 ++-------
 2 files changed, 7 insertions(+), 51 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index ccf1e47d9e92..fb75fa9614c5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3962,30 +3962,6 @@ static void bnxt_free_hwrm_resources(struct bnxt *bp)
 				  bp->hwrm_cmd_resp_dma_addr);
 		bp->hwrm_cmd_resp_addr = NULL;
 	}
-
-	if (bp->hwrm_cmd_kong_resp_addr) {
-		dma_free_coherent(&pdev->dev, PAGE_SIZE,
-				  bp->hwrm_cmd_kong_resp_addr,
-				  bp->hwrm_cmd_kong_resp_dma_addr);
-		bp->hwrm_cmd_kong_resp_addr = NULL;
-	}
-}
-
-static int bnxt_alloc_kong_hwrm_resources(struct bnxt *bp)
-{
-	struct pci_dev *pdev = bp->pdev;
-
-	if (bp->hwrm_cmd_kong_resp_addr)
-		return 0;
-
-	bp->hwrm_cmd_kong_resp_addr =
-		dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
-				   &bp->hwrm_cmd_kong_resp_dma_addr,
-				   GFP_KERNEL);
-	if (!bp->hwrm_cmd_kong_resp_addr)
-		return -ENOMEM;
-
-	return 0;
 }
 
 static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
@@ -4581,10 +4557,7 @@ void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
 	req->req_type = cpu_to_le16(req_type);
 	req->cmpl_ring = cpu_to_le16(cmpl_ring);
 	req->target_id = cpu_to_le16(target_id);
-	if (bnxt_kong_hwrm_message(bp, req))
-		req->resp_addr = cpu_to_le64(bp->hwrm_cmd_kong_resp_dma_addr);
-	else
-		req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
+	req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
 }
 
 static int bnxt_hwrm_to_stderr(u32 hwrm_err)
@@ -4641,11 +4614,10 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 			return -EINVAL;
 	}
 
-	if (bnxt_hwrm_kong_chnl(bp, req)) {
+	if (bnxt_kong_hwrm_message(bp, req)) {
 		dst = BNXT_HWRM_CHNL_KONG;
 		bar_offset = BNXT_GRCPF_REG_KONG_COMM;
 		doorbell_offset = BNXT_GRCPF_REG_KONG_COMM_TRIGGER;
-		resp = bp->hwrm_cmd_kong_resp_addr;
 	}
 
 	memset(resp, 0, PAGE_SIZE);
@@ -11948,12 +11920,6 @@ static int bnxt_fw_init_one_p1(struct bnxt *bp)
 			return rc;
 	}
 
-	if (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL) {
-		rc = bnxt_alloc_kong_hwrm_resources(bp);
-		if (rc)
-			bp->fw_cap &= ~BNXT_FW_CAP_KONG_MB_CHNL;
-	}
-
 	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
 	    bp->hwrm_max_ext_req_len > BNXT_HWRM_MAX_REQ_LEN) {
 		rc = bnxt_alloc_hwrm_short_cmd_req(bp);
@@ -12136,8 +12102,8 @@ static void bnxt_reset_all(struct bnxt *bp)
 	} else if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_CO_CPU) {
 		struct hwrm_fw_reset_input req = {0};
 
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1, -1);
-		req.resp_addr = cpu_to_le64(bp->hwrm_cmd_kong_resp_dma_addr);
+		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1,
+				       HWRM_TARGET_ID_KONG);
 		req.embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_CHIP;
 		req.selfrst_status = FW_RESET_REQ_SELFRST_STATUS_SELFRSTASAP;
 		req.flags = FW_RESET_REQ_FLAGS_RESET_GRACEFUL;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index dc96dd6957c9..a4fb1aa12b24 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1915,8 +1915,6 @@ struct bnxt {
 	dma_addr_t		hwrm_short_cmd_req_dma_addr;
 	void			*hwrm_cmd_resp_addr;
 	dma_addr_t		hwrm_cmd_resp_dma_addr;
-	void			*hwrm_cmd_kong_resp_addr;
-	dma_addr_t		hwrm_cmd_kong_resp_dma_addr;
 
 	struct rtnl_link_stats64	net_stats_prev;
 	struct bnxt_stats_mem	port_stats;
@@ -2216,21 +2214,13 @@ static inline bool bnxt_cfa_hwrm_message(u16 req_type)
 static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req)
 {
 	return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL &&
-		bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)));
-}
-
-static inline bool bnxt_hwrm_kong_chnl(struct bnxt *bp, struct input *req)
-{
-	return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL &&
-		req->resp_addr == cpu_to_le64(bp->hwrm_cmd_kong_resp_dma_addr));
+		(bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)) ||
+		 le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));
 }
 
 static inline void *bnxt_get_hwrm_resp_addr(struct bnxt *bp, void *req)
 {
-	if (bnxt_hwrm_kong_chnl(bp, (struct input *)req))
-		return bp->hwrm_cmd_kong_resp_addr;
-	else
-		return bp->hwrm_cmd_resp_addr;
+	return bp->hwrm_cmd_resp_addr;
 }
 
 static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp, u16 dst)
-- 
2.18.1


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[PATCH net-next v2 02/11] bnxt_en: Refactor the HWRM_VER_GET firmware calls

[Michael Chan]

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From: Edwin Peer <edwin.peer@broadcom.com>

Refactor the code so that __bnxt_hwrm_ver_get() does not call
bnxt_hwrm_do_send_msg() directly.  The new APIs will not expose this
internal call.  Add a new bnxt_hwrm_poll() to poll the HWRM_VER_GET
firmware call silently.  The other bnxt_hwrm_ver_get() function will
send the HWRM_VER_GET message directly with error logs enabled.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index fb75fa9614c5..dd2f80c394f5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -8036,7 +8036,7 @@ static int bnxt_hwrm_queue_qportcfg(struct bnxt *bp)
 	return rc;
 }
 
-static int __bnxt_hwrm_ver_get(struct bnxt *bp, bool silent)
+static int bnxt_hwrm_poll(struct bnxt *bp)
 {
 	struct hwrm_ver_get_input req = {0};
 	int rc;
@@ -8046,21 +8046,26 @@ static int __bnxt_hwrm_ver_get(struct bnxt *bp, bool silent)
 	req.hwrm_intf_min = HWRM_VERSION_MINOR;
 	req.hwrm_intf_upd = HWRM_VERSION_UPDATE;
 
-	rc = bnxt_hwrm_do_send_msg(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT,
-				   silent);
+	rc = _hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	return rc;
 }
 
 static int bnxt_hwrm_ver_get(struct bnxt *bp)
 {
 	struct hwrm_ver_get_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_ver_get_input req = {0};
 	u16 fw_maj, fw_min, fw_bld, fw_rsv;
 	u32 dev_caps_cfg, hwrm_ver;
 	int rc, len;
 
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VER_GET, -1, -1);
 	bp->hwrm_max_req_len = HWRM_MAX_REQ_LEN;
+	req.hwrm_intf_maj = HWRM_VERSION_MAJOR;
+	req.hwrm_intf_min = HWRM_VERSION_MINOR;
+	req.hwrm_intf_upd = HWRM_VERSION_UPDATE;
+
 	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = __bnxt_hwrm_ver_get(bp, false);
+	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	if (rc)
 		goto hwrm_ver_get_exit;
 
@@ -9791,7 +9796,7 @@ static int bnxt_try_recover_fw(struct bnxt *bp)
 		mutex_lock(&bp->hwrm_cmd_lock);
 		do {
 			sts = bnxt_fw_health_readl(bp, BNXT_FW_HEALTH_REG);
-			rc = __bnxt_hwrm_ver_get(bp, true);
+			rc = bnxt_hwrm_poll(bp);
 			if (!BNXT_FW_IS_BOOTING(sts) &&
 			    !BNXT_FW_IS_RECOVERING(sts))
 				break;
@@ -12234,7 +12239,7 @@ static void bnxt_fw_reset_task(struct work_struct *work)
 		fallthrough;
 	case BNXT_FW_RESET_STATE_POLL_FW:
 		bp->hwrm_cmd_timeout = SHORT_HWRM_CMD_TIMEOUT;
-		rc = __bnxt_hwrm_ver_get(bp, true);
+		rc = bnxt_hwrm_poll(bp);
 		if (rc) {
 			if (bnxt_fw_reset_timeout(bp)) {
 				netdev_err(bp->dev, "Firmware reset aborted\n");
-- 
2.18.1


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[PATCH net-next v2 03/11] bnxt_en: move HWRM API implementation into separate file

[Michael Chan]

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From: Edwin Peer <edwin.peer@broadcom.com>

Move all firmware messaging functions and definitions to new
bnxt_hwrm.[ch].  The follow-on patches will make major modifications
to these APIs.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/Makefile   |   2 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 273 +---------------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  84 -----
 drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c |   1 +
 .../net/ethernet/broadcom/bnxt/bnxt_devlink.c |   1 +
 .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c |   1 +
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 297 ++++++++++++++++++
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    | 100 ++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c |   1 +
 .../net/ethernet/broadcom/bnxt/bnxt_sriov.c   |   1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c  |   1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c |   1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c |   1 +
 13 files changed, 407 insertions(+), 357 deletions(-)
 create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
 create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h

diff --git a/drivers/net/ethernet/broadcom/bnxt/Makefile b/drivers/net/ethernet/broadcom/bnxt/Makefile
index 2b8ae687b3c1..c6ef7ec2c115 100644
--- a/drivers/net/ethernet/broadcom/bnxt/Makefile
+++ b/drivers/net/ethernet/broadcom/bnxt/Makefile
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_BNXT) += bnxt_en.o
 
-bnxt_en-y := bnxt.o bnxt_sriov.o bnxt_ethtool.o bnxt_dcb.o bnxt_ulp.o bnxt_xdp.o bnxt_ptp.o bnxt_vfr.o bnxt_devlink.o bnxt_dim.o
+bnxt_en-y := bnxt.o bnxt_hwrm.o bnxt_sriov.o bnxt_ethtool.o bnxt_dcb.o bnxt_ulp.o bnxt_xdp.o bnxt_ptp.o bnxt_vfr.o bnxt_devlink.o bnxt_dim.o
 bnxt_en-$(CONFIG_BNXT_FLOWER_OFFLOAD) += bnxt_tc.o
 bnxt_en-$(CONFIG_DEBUG_FS) += bnxt_debugfs.o
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index dd2f80c394f5..10c39801ad5f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -60,6 +60,7 @@
 
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_ulp.h"
 #include "bnxt_sriov.h"
 #include "bnxt_ethtool.h"
@@ -4549,278 +4550,6 @@ static void bnxt_enable_int(struct bnxt *bp)
 	}
 }
 
-void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
-			    u16 cmpl_ring, u16 target_id)
-{
-	struct input *req = request;
-
-	req->req_type = cpu_to_le16(req_type);
-	req->cmpl_ring = cpu_to_le16(cmpl_ring);
-	req->target_id = cpu_to_le16(target_id);
-	req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
-}
-
-static int bnxt_hwrm_to_stderr(u32 hwrm_err)
-{
-	switch (hwrm_err) {
-	case HWRM_ERR_CODE_SUCCESS:
-		return 0;
-	case HWRM_ERR_CODE_RESOURCE_LOCKED:
-		return -EROFS;
-	case HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED:
-		return -EACCES;
-	case HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR:
-		return -ENOSPC;
-	case HWRM_ERR_CODE_INVALID_PARAMS:
-	case HWRM_ERR_CODE_INVALID_FLAGS:
-	case HWRM_ERR_CODE_INVALID_ENABLES:
-	case HWRM_ERR_CODE_UNSUPPORTED_TLV:
-	case HWRM_ERR_CODE_UNSUPPORTED_OPTION_ERR:
-		return -EINVAL;
-	case HWRM_ERR_CODE_NO_BUFFER:
-		return -ENOMEM;
-	case HWRM_ERR_CODE_HOT_RESET_PROGRESS:
-	case HWRM_ERR_CODE_BUSY:
-		return -EAGAIN;
-	case HWRM_ERR_CODE_CMD_NOT_SUPPORTED:
-		return -EOPNOTSUPP;
-	default:
-		return -EIO;
-	}
-}
-
-static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
-				 int timeout, bool silent)
-{
-	int i, intr_process, rc, tmo_count;
-	struct input *req = msg;
-	u32 *data = msg;
-	u8 *valid;
-	u16 cp_ring_id, len = 0;
-	struct hwrm_err_output *resp = bp->hwrm_cmd_resp_addr;
-	u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN;
-	struct hwrm_short_input short_input = {0};
-	u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER;
-	u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM;
-	u16 dst = BNXT_HWRM_CHNL_CHIMP;
-
-	if (BNXT_NO_FW_ACCESS(bp) &&
-	    le16_to_cpu(req->req_type) != HWRM_FUNC_RESET)
-		return -EBUSY;
-
-	if (msg_len > BNXT_HWRM_MAX_REQ_LEN) {
-		if (msg_len > bp->hwrm_max_ext_req_len ||
-		    !bp->hwrm_short_cmd_req_addr)
-			return -EINVAL;
-	}
-
-	if (bnxt_kong_hwrm_message(bp, req)) {
-		dst = BNXT_HWRM_CHNL_KONG;
-		bar_offset = BNXT_GRCPF_REG_KONG_COMM;
-		doorbell_offset = BNXT_GRCPF_REG_KONG_COMM_TRIGGER;
-	}
-
-	memset(resp, 0, PAGE_SIZE);
-	cp_ring_id = le16_to_cpu(req->cmpl_ring);
-	intr_process = (cp_ring_id == INVALID_HW_RING_ID) ? 0 : 1;
-
-	req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp, dst));
-	/* currently supports only one outstanding message */
-	if (intr_process)
-		bp->hwrm_intr_seq_id = le16_to_cpu(req->seq_id);
-
-	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
-	    msg_len > BNXT_HWRM_MAX_REQ_LEN) {
-		void *short_cmd_req = bp->hwrm_short_cmd_req_addr;
-		u16 max_msg_len;
-
-		/* Set boundary for maximum extended request length for short
-		 * cmd format. If passed up from device use the max supported
-		 * internal req length.
-		 */
-		max_msg_len = bp->hwrm_max_ext_req_len;
-
-		memcpy(short_cmd_req, req, msg_len);
-		if (msg_len < max_msg_len)
-			memset(short_cmd_req + msg_len, 0,
-			       max_msg_len - msg_len);
-
-		short_input.req_type = req->req_type;
-		short_input.signature =
-				cpu_to_le16(SHORT_REQ_SIGNATURE_SHORT_CMD);
-		short_input.size = cpu_to_le16(msg_len);
-		short_input.req_addr =
-			cpu_to_le64(bp->hwrm_short_cmd_req_dma_addr);
-
-		data = (u32 *)&short_input;
-		msg_len = sizeof(short_input);
-
-		/* Sync memory write before updating doorbell */
-		wmb();
-
-		max_req_len = BNXT_HWRM_SHORT_REQ_LEN;
-	}
-
-	/* Write request msg to hwrm channel */
-	__iowrite32_copy(bp->bar0 + bar_offset, data, msg_len / 4);
-
-	for (i = msg_len; i < max_req_len; i += 4)
-		writel(0, bp->bar0 + bar_offset + i);
-
-	/* Ring channel doorbell */
-	writel(1, bp->bar0 + doorbell_offset);
-
-	if (!pci_is_enabled(bp->pdev))
-		return -ENODEV;
-
-	if (!timeout)
-		timeout = DFLT_HWRM_CMD_TIMEOUT;
-	/* Limit timeout to an upper limit */
-	timeout = min(timeout, HWRM_CMD_MAX_TIMEOUT);
-	/* convert timeout to usec */
-	timeout *= 1000;
-
-	i = 0;
-	/* Short timeout for the first few iterations:
-	 * number of loops = number of loops for short timeout +
-	 * number of loops for standard timeout.
-	 */
-	tmo_count = HWRM_SHORT_TIMEOUT_COUNTER;
-	timeout = timeout - HWRM_SHORT_MIN_TIMEOUT * HWRM_SHORT_TIMEOUT_COUNTER;
-	tmo_count += DIV_ROUND_UP(timeout, HWRM_MIN_TIMEOUT);
-
-	if (intr_process) {
-		u16 seq_id = bp->hwrm_intr_seq_id;
-
-		/* Wait until hwrm response cmpl interrupt is processed */
-		while (bp->hwrm_intr_seq_id != (u16)~seq_id &&
-		       i++ < tmo_count) {
-			/* Abort the wait for completion if the FW health
-			 * check has failed.
-			 */
-			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
-				return -EBUSY;
-			/* on first few passes, just barely sleep */
-			if (i < HWRM_SHORT_TIMEOUT_COUNTER) {
-				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
-					     HWRM_SHORT_MAX_TIMEOUT);
-			} else {
-				if (HWRM_WAIT_MUST_ABORT(bp, req))
-					break;
-				usleep_range(HWRM_MIN_TIMEOUT,
-					     HWRM_MAX_TIMEOUT);
-			}
-		}
-
-		if (bp->hwrm_intr_seq_id != (u16)~seq_id) {
-			if (!silent)
-				netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
-					   le16_to_cpu(req->req_type));
-			return -EBUSY;
-		}
-		len = le16_to_cpu(resp->resp_len);
-		valid = ((u8 *)resp) + len - 1;
-	} else {
-		int j;
-
-		/* Check if response len is updated */
-		for (i = 0; i < tmo_count; i++) {
-			/* Abort the wait for completion if the FW health
-			 * check has failed.
-			 */
-			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
-				return -EBUSY;
-			len = le16_to_cpu(resp->resp_len);
-			if (len)
-				break;
-			/* on first few passes, just barely sleep */
-			if (i < HWRM_SHORT_TIMEOUT_COUNTER) {
-				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
-					     HWRM_SHORT_MAX_TIMEOUT);
-			} else {
-				if (HWRM_WAIT_MUST_ABORT(bp, req))
-					goto timeout_abort;
-				usleep_range(HWRM_MIN_TIMEOUT,
-					     HWRM_MAX_TIMEOUT);
-			}
-		}
-
-		if (i >= tmo_count) {
-timeout_abort:
-			if (!silent)
-				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
-					   HWRM_TOTAL_TIMEOUT(i),
-					   le16_to_cpu(req->req_type),
-					   le16_to_cpu(req->seq_id), len);
-			return -EBUSY;
-		}
-
-		/* Last byte of resp contains valid bit */
-		valid = ((u8 *)resp) + len - 1;
-		for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; j++) {
-			/* make sure we read from updated DMA memory */
-			dma_rmb();
-			if (*valid)
-				break;
-			usleep_range(1, 5);
-		}
-
-		if (j >= HWRM_VALID_BIT_DELAY_USEC) {
-			if (!silent)
-				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n",
-					   HWRM_TOTAL_TIMEOUT(i),
-					   le16_to_cpu(req->req_type),
-					   le16_to_cpu(req->seq_id), len,
-					   *valid);
-			return -EBUSY;
-		}
-	}
-
-	/* Zero valid bit for compatibility.  Valid bit in an older spec
-	 * may become a new field in a newer spec.  We must make sure that
-	 * a new field not implemented by old spec will read zero.
-	 */
-	*valid = 0;
-	rc = le16_to_cpu(resp->error_code);
-	if (rc && !silent)
-		netdev_err(bp->dev, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n",
-			   le16_to_cpu(resp->req_type),
-			   le16_to_cpu(resp->seq_id), rc);
-	return bnxt_hwrm_to_stderr(rc);
-}
-
-int _hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
-{
-	return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, false);
-}
-
-int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
-			      int timeout)
-{
-	return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true);
-}
-
-int hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
-{
-	int rc;
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, msg, msg_len, timeout);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return rc;
-}
-
-int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
-			     int timeout)
-{
-	int rc;
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return rc;
-}
-
 int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap, int bmap_size,
 			    bool async_only)
 {
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index a4fb1aa12b24..5ff71eeffdd8 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -669,37 +669,7 @@ struct nqe_cn {
 #define RING_CMP(idx)		((idx) & bp->cp_ring_mask)
 #define NEXT_CMP(idx)		RING_CMP(ADV_RAW_CMP(idx, 1))
 
-#define BNXT_HWRM_MAX_REQ_LEN		(bp->hwrm_max_req_len)
-#define BNXT_HWRM_SHORT_REQ_LEN		sizeof(struct hwrm_short_input)
 #define DFLT_HWRM_CMD_TIMEOUT		500
-#define HWRM_CMD_MAX_TIMEOUT		40000
-#define SHORT_HWRM_CMD_TIMEOUT		20
-#define HWRM_CMD_TIMEOUT		(bp->hwrm_cmd_timeout)
-#define HWRM_RESET_TIMEOUT		((HWRM_CMD_TIMEOUT) * 4)
-#define HWRM_COREDUMP_TIMEOUT		((HWRM_CMD_TIMEOUT) * 12)
-#define BNXT_HWRM_REQ_MAX_SIZE		128
-#define BNXT_HWRM_REQS_PER_PAGE		(BNXT_PAGE_SIZE /	\
-					 BNXT_HWRM_REQ_MAX_SIZE)
-#define HWRM_SHORT_MIN_TIMEOUT		3
-#define HWRM_SHORT_MAX_TIMEOUT		10
-#define HWRM_SHORT_TIMEOUT_COUNTER	5
-
-#define HWRM_MIN_TIMEOUT		25
-#define HWRM_MAX_TIMEOUT		40
-
-#define HWRM_WAIT_MUST_ABORT(bp, req)					\
-	(le16_to_cpu((req)->req_type) != HWRM_VER_GET &&		\
-	 !bnxt_is_fw_healthy(bp))
-
-#define HWRM_TOTAL_TIMEOUT(n)	(((n) <= HWRM_SHORT_TIMEOUT_COUNTER) ?	\
-	((n) * HWRM_SHORT_MIN_TIMEOUT) :				\
-	(HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT +		\
-	 ((n) - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT))
-
-#define HWRM_VALID_BIT_DELAY_USEC	150
-
-#define BNXT_HWRM_CHNL_CHIMP	0
-#define BNXT_HWRM_CHNL_KONG	1
 
 #define BNXT_RX_EVENT		1
 #define BNXT_AGG_EVENT		2
@@ -2185,55 +2155,6 @@ static inline void bnxt_db_write(struct bnxt *bp, struct bnxt_db_info *db,
 	}
 }
 
-static inline bool bnxt_cfa_hwrm_message(u16 req_type)
-{
-	switch (req_type) {
-	case HWRM_CFA_ENCAP_RECORD_ALLOC:
-	case HWRM_CFA_ENCAP_RECORD_FREE:
-	case HWRM_CFA_DECAP_FILTER_ALLOC:
-	case HWRM_CFA_DECAP_FILTER_FREE:
-	case HWRM_CFA_EM_FLOW_ALLOC:
-	case HWRM_CFA_EM_FLOW_FREE:
-	case HWRM_CFA_EM_FLOW_CFG:
-	case HWRM_CFA_FLOW_ALLOC:
-	case HWRM_CFA_FLOW_FREE:
-	case HWRM_CFA_FLOW_INFO:
-	case HWRM_CFA_FLOW_FLUSH:
-	case HWRM_CFA_FLOW_STATS:
-	case HWRM_CFA_METER_PROFILE_ALLOC:
-	case HWRM_CFA_METER_PROFILE_FREE:
-	case HWRM_CFA_METER_PROFILE_CFG:
-	case HWRM_CFA_METER_INSTANCE_ALLOC:
-	case HWRM_CFA_METER_INSTANCE_FREE:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req)
-{
-	return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL &&
-		(bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)) ||
-		 le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));
-}
-
-static inline void *bnxt_get_hwrm_resp_addr(struct bnxt *bp, void *req)
-{
-	return bp->hwrm_cmd_resp_addr;
-}
-
-static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp, u16 dst)
-{
-	u16 seq_id;
-
-	if (dst == BNXT_HWRM_CHNL_CHIMP)
-		seq_id = bp->hwrm_cmd_seq++;
-	else
-		seq_id = bp->hwrm_cmd_kong_seq++;
-	return seq_id;
-}
-
 extern const u16 bnxt_lhint_arr[];
 
 int bnxt_alloc_rx_data(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
@@ -2243,11 +2164,6 @@ u32 bnxt_fw_health_readl(struct bnxt *bp, int reg_idx);
 void bnxt_set_tpa_flags(struct bnxt *bp);
 void bnxt_set_ring_params(struct bnxt *);
 int bnxt_set_rx_skb_mode(struct bnxt *bp, bool page_mode);
-void bnxt_hwrm_cmd_hdr_init(struct bnxt *, void *, u16, u16, u16);
-int _hwrm_send_message(struct bnxt *, void *, u32, int);
-int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
-int hwrm_send_message(struct bnxt *, void *, u32, int);
-int hwrm_send_message_silent(struct bnxt *, void *, u32, int);
 int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap,
 			    int bmap_size, bool async_only);
 int bnxt_get_nr_rss_ctxs(struct bnxt *bp, int rx_rings);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
index 8a68df4d9e59..df898665763a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
@@ -18,6 +18,7 @@
 #include <rdma/ib_verbs.h>
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_dcb.h"
 
 #ifdef CONFIG_BNXT_DCB
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 2cd8bb37e641..00b284a028c5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -12,6 +12,7 @@
 #include <net/devlink.h>
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_vfr.h"
 #include "bnxt_devlink.h"
 #include "bnxt_ethtool.h"
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 5852ae3b26a2..b6aaf14bd7fd 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -24,6 +24,7 @@
 #include <linux/timecounter.h>
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_xdp.h"
 #include "bnxt_ptp.h"
 #include "bnxt_ethtool.h"
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
new file mode 100644
index 000000000000..b2a211b6cdd0
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -0,0 +1,297 @@
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2020 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/errno.h>
+#include <linux/ethtool.h>
+#include <linux/if_ether.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/skbuff.h>
+
+#include "bnxt_hsi.h"
+#include "bnxt.h"
+#include "bnxt_hwrm.h"
+
+void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
+			    u16 cmpl_ring, u16 target_id)
+{
+	struct input *req = request;
+
+	req->req_type = cpu_to_le16(req_type);
+	req->cmpl_ring = cpu_to_le16(cmpl_ring);
+	req->target_id = cpu_to_le16(target_id);
+	req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
+}
+
+static int bnxt_hwrm_to_stderr(u32 hwrm_err)
+{
+	switch (hwrm_err) {
+	case HWRM_ERR_CODE_SUCCESS:
+		return 0;
+	case HWRM_ERR_CODE_RESOURCE_LOCKED:
+		return -EROFS;
+	case HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED:
+		return -EACCES;
+	case HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR:
+		return -ENOSPC;
+	case HWRM_ERR_CODE_INVALID_PARAMS:
+	case HWRM_ERR_CODE_INVALID_FLAGS:
+	case HWRM_ERR_CODE_INVALID_ENABLES:
+	case HWRM_ERR_CODE_UNSUPPORTED_TLV:
+	case HWRM_ERR_CODE_UNSUPPORTED_OPTION_ERR:
+		return -EINVAL;
+	case HWRM_ERR_CODE_NO_BUFFER:
+		return -ENOMEM;
+	case HWRM_ERR_CODE_HOT_RESET_PROGRESS:
+	case HWRM_ERR_CODE_BUSY:
+		return -EAGAIN;
+	case HWRM_ERR_CODE_CMD_NOT_SUPPORTED:
+		return -EOPNOTSUPP;
+	default:
+		return -EIO;
+	}
+}
+
+static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
+				 int timeout, bool silent)
+{
+	int i, intr_process, rc, tmo_count;
+	struct input *req = msg;
+	u32 *data = msg;
+	u8 *valid;
+	u16 cp_ring_id, len = 0;
+	struct hwrm_err_output *resp = bp->hwrm_cmd_resp_addr;
+	u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN;
+	struct hwrm_short_input short_input = {0};
+	u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER;
+	u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM;
+	u16 dst = BNXT_HWRM_CHNL_CHIMP;
+
+	if (BNXT_NO_FW_ACCESS(bp) &&
+	    le16_to_cpu(req->req_type) != HWRM_FUNC_RESET)
+		return -EBUSY;
+
+	if (msg_len > BNXT_HWRM_MAX_REQ_LEN) {
+		if (msg_len > bp->hwrm_max_ext_req_len ||
+		    !bp->hwrm_short_cmd_req_addr)
+			return -EINVAL;
+	}
+
+	if (bnxt_kong_hwrm_message(bp, req)) {
+		dst = BNXT_HWRM_CHNL_KONG;
+		bar_offset = BNXT_GRCPF_REG_KONG_COMM;
+		doorbell_offset = BNXT_GRCPF_REG_KONG_COMM_TRIGGER;
+	}
+
+	memset(resp, 0, PAGE_SIZE);
+	cp_ring_id = le16_to_cpu(req->cmpl_ring);
+	intr_process = (cp_ring_id == INVALID_HW_RING_ID) ? 0 : 1;
+
+	req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp, dst));
+	/* currently supports only one outstanding message */
+	if (intr_process)
+		bp->hwrm_intr_seq_id = le16_to_cpu(req->seq_id);
+
+	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
+	    msg_len > BNXT_HWRM_MAX_REQ_LEN) {
+		void *short_cmd_req = bp->hwrm_short_cmd_req_addr;
+		u16 max_msg_len;
+
+		/* Set boundary for maximum extended request length for short
+		 * cmd format. If passed up from device use the max supported
+		 * internal req length.
+		 */
+		max_msg_len = bp->hwrm_max_ext_req_len;
+
+		memcpy(short_cmd_req, req, msg_len);
+		if (msg_len < max_msg_len)
+			memset(short_cmd_req + msg_len, 0,
+			       max_msg_len - msg_len);
+
+		short_input.req_type = req->req_type;
+		short_input.signature =
+				cpu_to_le16(SHORT_REQ_SIGNATURE_SHORT_CMD);
+		short_input.size = cpu_to_le16(msg_len);
+		short_input.req_addr =
+			cpu_to_le64(bp->hwrm_short_cmd_req_dma_addr);
+
+		data = (u32 *)&short_input;
+		msg_len = sizeof(short_input);
+
+		/* Sync memory write before updating doorbell */
+		wmb();
+
+		max_req_len = BNXT_HWRM_SHORT_REQ_LEN;
+	}
+
+	/* Write request msg to hwrm channel */
+	__iowrite32_copy(bp->bar0 + bar_offset, data, msg_len / 4);
+
+	for (i = msg_len; i < max_req_len; i += 4)
+		writel(0, bp->bar0 + bar_offset + i);
+
+	/* Ring channel doorbell */
+	writel(1, bp->bar0 + doorbell_offset);
+
+	if (!pci_is_enabled(bp->pdev))
+		return -ENODEV;
+
+	if (!timeout)
+		timeout = DFLT_HWRM_CMD_TIMEOUT;
+	/* Limit timeout to an upper limit */
+	timeout = min(timeout, HWRM_CMD_MAX_TIMEOUT);
+	/* convert timeout to usec */
+	timeout *= 1000;
+
+	i = 0;
+	/* Short timeout for the first few iterations:
+	 * number of loops = number of loops for short timeout +
+	 * number of loops for standard timeout.
+	 */
+	tmo_count = HWRM_SHORT_TIMEOUT_COUNTER;
+	timeout = timeout - HWRM_SHORT_MIN_TIMEOUT * HWRM_SHORT_TIMEOUT_COUNTER;
+	tmo_count += DIV_ROUND_UP(timeout, HWRM_MIN_TIMEOUT);
+
+	if (intr_process) {
+		u16 seq_id = bp->hwrm_intr_seq_id;
+
+		/* Wait until hwrm response cmpl interrupt is processed */
+		while (bp->hwrm_intr_seq_id != (u16)~seq_id &&
+		       i++ < tmo_count) {
+			/* Abort the wait for completion if the FW health
+			 * check has failed.
+			 */
+			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
+				return -EBUSY;
+			/* on first few passes, just barely sleep */
+			if (i < HWRM_SHORT_TIMEOUT_COUNTER) {
+				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
+					     HWRM_SHORT_MAX_TIMEOUT);
+			} else {
+				if (HWRM_WAIT_MUST_ABORT(bp, req))
+					break;
+				usleep_range(HWRM_MIN_TIMEOUT,
+					     HWRM_MAX_TIMEOUT);
+			}
+		}
+
+		if (bp->hwrm_intr_seq_id != (u16)~seq_id) {
+			if (!silent)
+				netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
+					   le16_to_cpu(req->req_type));
+			return -EBUSY;
+		}
+		len = le16_to_cpu(resp->resp_len);
+		valid = ((u8 *)resp) + len - 1;
+	} else {
+		int j;
+
+		/* Check if response len is updated */
+		for (i = 0; i < tmo_count; i++) {
+			/* Abort the wait for completion if the FW health
+			 * check has failed.
+			 */
+			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
+				return -EBUSY;
+			len = le16_to_cpu(resp->resp_len);
+			if (len)
+				break;
+			/* on first few passes, just barely sleep */
+			if (i < HWRM_SHORT_TIMEOUT_COUNTER) {
+				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
+					     HWRM_SHORT_MAX_TIMEOUT);
+			} else {
+				if (HWRM_WAIT_MUST_ABORT(bp, req))
+					goto timeout_abort;
+				usleep_range(HWRM_MIN_TIMEOUT,
+					     HWRM_MAX_TIMEOUT);
+			}
+		}
+
+		if (i >= tmo_count) {
+timeout_abort:
+			if (!silent)
+				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
+					   HWRM_TOTAL_TIMEOUT(i),
+					   le16_to_cpu(req->req_type),
+					   le16_to_cpu(req->seq_id), len);
+			return -EBUSY;
+		}
+
+		/* Last byte of resp contains valid bit */
+		valid = ((u8 *)resp) + len - 1;
+		for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; j++) {
+			/* make sure we read from updated DMA memory */
+			dma_rmb();
+			if (*valid)
+				break;
+			usleep_range(1, 5);
+		}
+
+		if (j >= HWRM_VALID_BIT_DELAY_USEC) {
+			if (!silent)
+				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n",
+					   HWRM_TOTAL_TIMEOUT(i),
+					   le16_to_cpu(req->req_type),
+					   le16_to_cpu(req->seq_id), len,
+					   *valid);
+			return -EBUSY;
+		}
+	}
+
+	/* Zero valid bit for compatibility.  Valid bit in an older spec
+	 * may become a new field in a newer spec.  We must make sure that
+	 * a new field not implemented by old spec will read zero.
+	 */
+	*valid = 0;
+	rc = le16_to_cpu(resp->error_code);
+	if (rc && !silent)
+		netdev_err(bp->dev, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n",
+			   le16_to_cpu(resp->req_type),
+			   le16_to_cpu(resp->seq_id), rc);
+	return bnxt_hwrm_to_stderr(rc);
+}
+
+int _hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
+{
+	return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, false);
+}
+
+int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
+			      int timeout)
+{
+	return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true);
+}
+
+int hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
+{
+	int rc;
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = _hwrm_send_message(bp, msg, msg_len, timeout);
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
+
+int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
+			     int timeout)
+{
+	int rc;
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true);
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
new file mode 100644
index 000000000000..940c792b54c7
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
@@ -0,0 +1,100 @@
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2020 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef BNXT_HWRM_H
+#define BNXT_HWRM_H
+
+#include "bnxt_hsi.h"
+
+#define BNXT_HWRM_MAX_REQ_LEN		(bp->hwrm_max_req_len)
+#define BNXT_HWRM_SHORT_REQ_LEN		sizeof(struct hwrm_short_input)
+#define HWRM_CMD_MAX_TIMEOUT		40000
+#define SHORT_HWRM_CMD_TIMEOUT		20
+#define HWRM_CMD_TIMEOUT		(bp->hwrm_cmd_timeout)
+#define HWRM_RESET_TIMEOUT		((HWRM_CMD_TIMEOUT) * 4)
+#define HWRM_COREDUMP_TIMEOUT		((HWRM_CMD_TIMEOUT) * 12)
+#define BNXT_HWRM_REQ_MAX_SIZE		128
+#define BNXT_HWRM_REQS_PER_PAGE		(BNXT_PAGE_SIZE /	\
+					 BNXT_HWRM_REQ_MAX_SIZE)
+#define HWRM_SHORT_MIN_TIMEOUT		3
+#define HWRM_SHORT_MAX_TIMEOUT		10
+#define HWRM_SHORT_TIMEOUT_COUNTER	5
+
+#define HWRM_MIN_TIMEOUT		25
+#define HWRM_MAX_TIMEOUT		40
+
+#define HWRM_WAIT_MUST_ABORT(bp, req)					\
+	(le16_to_cpu((req)->req_type) != HWRM_VER_GET &&		\
+	 !bnxt_is_fw_healthy(bp))
+
+#define HWRM_TOTAL_TIMEOUT(n)	(((n) <= HWRM_SHORT_TIMEOUT_COUNTER) ?	\
+	((n) * HWRM_SHORT_MIN_TIMEOUT) :				\
+	(HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT +		\
+	 ((n) - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT))
+
+#define HWRM_VALID_BIT_DELAY_USEC	150
+
+#define BNXT_HWRM_CHNL_CHIMP	0
+#define BNXT_HWRM_CHNL_KONG	1
+
+static inline bool bnxt_cfa_hwrm_message(u16 req_type)
+{
+	switch (req_type) {
+	case HWRM_CFA_ENCAP_RECORD_ALLOC:
+	case HWRM_CFA_ENCAP_RECORD_FREE:
+	case HWRM_CFA_DECAP_FILTER_ALLOC:
+	case HWRM_CFA_DECAP_FILTER_FREE:
+	case HWRM_CFA_EM_FLOW_ALLOC:
+	case HWRM_CFA_EM_FLOW_FREE:
+	case HWRM_CFA_EM_FLOW_CFG:
+	case HWRM_CFA_FLOW_ALLOC:
+	case HWRM_CFA_FLOW_FREE:
+	case HWRM_CFA_FLOW_INFO:
+	case HWRM_CFA_FLOW_FLUSH:
+	case HWRM_CFA_FLOW_STATS:
+	case HWRM_CFA_METER_PROFILE_ALLOC:
+	case HWRM_CFA_METER_PROFILE_FREE:
+	case HWRM_CFA_METER_PROFILE_CFG:
+	case HWRM_CFA_METER_INSTANCE_ALLOC:
+	case HWRM_CFA_METER_INSTANCE_FREE:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req)
+{
+	return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL &&
+		(bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)) ||
+		 le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));
+}
+
+static inline void *bnxt_get_hwrm_resp_addr(struct bnxt *bp, void *req)
+{
+	return bp->hwrm_cmd_resp_addr;
+}
+
+static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp, u16 dst)
+{
+	u16 seq_id;
+
+	if (dst == BNXT_HWRM_CHNL_CHIMP)
+		seq_id = bp->hwrm_cmd_seq++;
+	else
+		seq_id = bp->hwrm_cmd_kong_seq++;
+	return seq_id;
+}
+
+void bnxt_hwrm_cmd_hdr_init(struct bnxt *, void *, u16, u16, u16);
+int _hwrm_send_message(struct bnxt *bp, void *msg, u32 len, int timeout);
+int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
+int hwrm_send_message(struct bnxt *bp, void *msg, u32 len, int timeout);
+int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
+#endif
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
index 2fe3c9081f8d..4cc2379027cf 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
@@ -18,6 +18,7 @@
 #include <linux/ptp_classify.h>
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_ptp.h"
 
 int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id, u16 *hdr_off)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index 7fa881e1cd80..7b0e308e44c2 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -17,6 +17,7 @@
 #include <linux/etherdevice.h>
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_ulp.h"
 #include "bnxt_sriov.h"
 #include "bnxt_vfr.h"
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
index 5e4429b14b8c..c0c3cc426f7b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
@@ -22,6 +22,7 @@
 
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_sriov.h"
 #include "bnxt_tc.h"
 #include "bnxt_vfr.h"
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index 187ff643ad2a..f621cffccd3a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -22,6 +22,7 @@
 
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_ulp.h"
 
 static int bnxt_register_dev(struct bnxt_en_dev *edev, int ulp_id,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
index dd66302343a2..3ed712a08207 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
@@ -15,6 +15,7 @@
 
 #include "bnxt_hsi.h"
 #include "bnxt.h"
+#include "bnxt_hwrm.h"
 #include "bnxt_vfr.h"
 #include "bnxt_devlink.h"
 #include "bnxt_tc.h"
-- 
2.18.1


[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]

[PATCH net-next v2 04/11] bnxt_en: introduce new firmware message API based on DMA pools

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 30185 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

This change constitutes a major step towards supporting multiple
firmware commands in flight by maintaining a separate response buffer
for the duration of each request. These firmware commands are also
known as Hardware Resource Manager (HWRM) commands.  Using separate
response buffers requires an API change in order for callers to be
able to free the buffer when done.

It is impossible to keep the existing APIs unchanged.  The existing
usage for a simple HWRM message request such as the following:

        struct input req = {0};
        bnxt_hwrm_cmd_hdr_init(bp, &req, REQ_TYPE, -1, -1);
        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
        if (rc)
                /* error */

changes to:

         struct input *req;
         rc = hwrm_req_init(bp, req, REQ_TYPE);
         if (rc)
                 /* error */
         rc = hwrm_req_send(bp, req); /* consumes req */
         if (rc)
                 /* error */

The key changes are:

1. The req is no longer allocated on the stack.
2. The caller must call hwrm_req_init() to allocate a req buffer and
   check for a valid buffer.
3. The req buffer is automatically released when hwrm_req_send() returns.
4. If the caller wants to check the firmware response, the caller must
   call hwrm_req_hold() to take ownership of the response buffer and
   release it afterwards using hwrm_req_drop().  The caller is no longer
   required to explicitly hold the hwrm_cmd_lock mutex to read the
   response.
5. Because the firmware commands and responses all have different sizes,
   some safeguards are added to the code.

This patch maintains legacy API compatibiltiy, implementing the old
API in terms of the new.  The follow-on patches will convert all
callers to use the new APIs.

v2: Fix redefined writeq with parisc .config
    Fix "cast from pointer to integer of different size" warning in
hwrm_calc_sentinel()

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     |  42 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |   7 +-
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 460 +++++++++++++++---
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    |  54 +-
 4 files changed, 442 insertions(+), 121 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 10c39801ad5f..23486f382b91 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3963,6 +3963,9 @@ static void bnxt_free_hwrm_resources(struct bnxt *bp)
 				  bp->hwrm_cmd_resp_dma_addr);
 		bp->hwrm_cmd_resp_addr = NULL;
 	}
+
+	dma_pool_destroy(bp->hwrm_dma_pool);
+	bp->hwrm_dma_pool = NULL;
 }
 
 static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
@@ -3975,33 +3978,10 @@ static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
 	if (!bp->hwrm_cmd_resp_addr)
 		return -ENOMEM;
 
-	return 0;
-}
-
-static void bnxt_free_hwrm_short_cmd_req(struct bnxt *bp)
-{
-	if (bp->hwrm_short_cmd_req_addr) {
-		struct pci_dev *pdev = bp->pdev;
-
-		dma_free_coherent(&pdev->dev, bp->hwrm_max_ext_req_len,
-				  bp->hwrm_short_cmd_req_addr,
-				  bp->hwrm_short_cmd_req_dma_addr);
-		bp->hwrm_short_cmd_req_addr = NULL;
-	}
-}
-
-static int bnxt_alloc_hwrm_short_cmd_req(struct bnxt *bp)
-{
-	struct pci_dev *pdev = bp->pdev;
-
-	if (bp->hwrm_short_cmd_req_addr)
-		return 0;
-
-	bp->hwrm_short_cmd_req_addr =
-		dma_alloc_coherent(&pdev->dev, bp->hwrm_max_ext_req_len,
-				   &bp->hwrm_short_cmd_req_dma_addr,
-				   GFP_KERNEL);
-	if (!bp->hwrm_short_cmd_req_addr)
+	bp->hwrm_dma_pool = dma_pool_create("bnxt_hwrm", &pdev->dev,
+					    BNXT_HWRM_DMA_SIZE,
+					    BNXT_HWRM_DMA_ALIGN, 0);
+	if (!bp->hwrm_dma_pool)
 		return -ENOMEM;
 
 	return 0;
@@ -11654,12 +11634,6 @@ static int bnxt_fw_init_one_p1(struct bnxt *bp)
 			return rc;
 	}
 
-	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
-	    bp->hwrm_max_ext_req_len > BNXT_HWRM_MAX_REQ_LEN) {
-		rc = bnxt_alloc_hwrm_short_cmd_req(bp);
-		if (rc)
-			return rc;
-	}
 	bnxt_nvm_cfg_ver_get(bp);
 
 	rc = bnxt_hwrm_func_reset(bp);
@@ -12588,7 +12562,6 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 	bnxt_clear_int_mode(bp);
 	bnxt_hwrm_func_drv_unrgtr(bp);
 	bnxt_free_hwrm_resources(bp);
-	bnxt_free_hwrm_short_cmd_req(bp);
 	bnxt_ethtool_free(bp);
 	bnxt_dcb_free(bp);
 	kfree(bp->edev);
@@ -13188,7 +13161,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 init_err_pci_clean:
 	bnxt_hwrm_func_drv_unrgtr(bp);
-	bnxt_free_hwrm_short_cmd_req(bp);
 	bnxt_free_hwrm_resources(bp);
 	bnxt_ethtool_free(bp);
 	bnxt_ptp_clear(bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 5ff71eeffdd8..79a78a7468f3 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1881,10 +1881,9 @@ struct bnxt {
 	u16			hwrm_cmd_seq;
 	u16                     hwrm_cmd_kong_seq;
 	u16			hwrm_intr_seq_id;
-	void			*hwrm_short_cmd_req_addr;
-	dma_addr_t		hwrm_short_cmd_req_dma_addr;
 	void			*hwrm_cmd_resp_addr;
 	dma_addr_t		hwrm_cmd_resp_dma_addr;
+	struct dma_pool		*hwrm_dma_pool;
 
 	struct rtnl_link_stats64	net_stats_prev;
 	struct bnxt_stats_mem	port_stats;
@@ -1984,7 +1983,7 @@ struct bnxt {
 	struct mutex		sriov_lock;
 #endif
 
-#if BITS_PER_LONG == 32
+#ifndef writeq
 	/* ensure atomic 64-bit doorbell writes on 32-bit systems. */
 	spinlock_t		db_lock;
 #endif
@@ -2113,7 +2112,7 @@ static inline u32 bnxt_tx_avail(struct bnxt *bp, struct bnxt_tx_ring_info *txr)
 		((txr->tx_prod - txr->tx_cons) & bp->tx_ring_mask);
 }
 
-#if BITS_PER_LONG == 32
+#ifndef writeq
 #define writeq(val64, db)			\
 do {						\
 	spin_lock(&bp->db_lock);		\
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index b2a211b6cdd0..a45f2a619086 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -35,7 +35,220 @@ void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
 	req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
 }
 
-static int bnxt_hwrm_to_stderr(u32 hwrm_err)
+static u64 hwrm_calc_sentinel(struct bnxt_hwrm_ctx *ctx, u16 req_type)
+{
+	return (((uintptr_t)ctx) + req_type) ^ BNXT_HWRM_SENTINEL;
+}
+
+/**
+ * __hwrm_req_init() - Initialize an HWRM request.
+ * @bp: The driver context.
+ * @req: A pointer to the request pointer to initialize.
+ * @req_type: The request type. This will be converted to the little endian
+ *	before being written to the req_type field of the returned request.
+ * @req_len: The length of the request to be allocated.
+ *
+ * Allocate DMA resources and initialize a new HWRM request object of the
+ * given type. The response address field in the request is configured with
+ * the DMA bus address that has been mapped for the response and the passed
+ * request is pointed to kernel virtual memory mapped for the request (such
+ * that short_input indirection can be accomplished without copying). The
+ * request’s target and completion ring are initialized to default values and
+ * can be overridden by writing to the returned request object directly.
+ *
+ * The initialized request can be further customized by writing to its fields
+ * directly, taking care to covert such fields to little endian. The request
+ * object will be consumed (and all its associated resources release) upon
+ * passing it to hwrm_req_send() unless ownership of the request has been
+ * claimed by the caller via a call to hwrm_req_hold(). If the request is not
+ * consumed, either because it is never sent or because ownership has been
+ * claimed, then it must be released by a call to hwrm_req_drop().
+ *
+ * Return: zero on success, negative error code otherwise:
+ *	E2BIG: the type of request pointer is too large to fit.
+ *	ENOMEM: an allocation failure occurred.
+ */
+int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len)
+{
+	struct bnxt_hwrm_ctx *ctx;
+	dma_addr_t dma_handle;
+	u8 *req_addr;
+
+	if (req_len > BNXT_HWRM_CTX_OFFSET)
+		return -E2BIG;
+
+	req_addr = dma_pool_alloc(bp->hwrm_dma_pool, GFP_KERNEL | __GFP_ZERO,
+				  &dma_handle);
+	if (!req_addr)
+		return -ENOMEM;
+
+	ctx = (struct bnxt_hwrm_ctx *)(req_addr + BNXT_HWRM_CTX_OFFSET);
+	/* safety first, sentinel used to check for invalid requests */
+	ctx->sentinel = hwrm_calc_sentinel(ctx, req_type);
+	ctx->req_len = req_len;
+	ctx->req = (struct input *)req_addr;
+	ctx->resp = (struct output *)(req_addr + BNXT_HWRM_RESP_OFFSET);
+	ctx->dma_handle = dma_handle;
+	ctx->flags = 0; /* __GFP_ZERO, but be explicit regarding ownership */
+	ctx->timeout = bp->hwrm_cmd_timeout ?: DFLT_HWRM_CMD_TIMEOUT;
+
+	/* initialize common request fields */
+	ctx->req->req_type = cpu_to_le16(req_type);
+	ctx->req->resp_addr = cpu_to_le64(dma_handle + BNXT_HWRM_RESP_OFFSET);
+	ctx->req->cmpl_ring = cpu_to_le16(BNXT_HWRM_NO_CMPL_RING);
+	ctx->req->target_id = cpu_to_le16(BNXT_HWRM_TARGET);
+	*req = ctx->req;
+
+	return 0;
+}
+
+static struct bnxt_hwrm_ctx *__hwrm_ctx(struct bnxt *bp, u8 *req_addr)
+{
+	void *ctx_addr = req_addr + BNXT_HWRM_CTX_OFFSET;
+	struct input *req = (struct input *)req_addr;
+	struct bnxt_hwrm_ctx *ctx = ctx_addr;
+	u64 sentinel;
+
+	if (!req) {
+		/* can only be due to software bug, be loud */
+		netdev_err(bp->dev, "null HWRM request");
+		dump_stack();
+		return NULL;
+	}
+
+	/* HWRM API has no type safety, verify sentinel to validate address */
+	sentinel = hwrm_calc_sentinel(ctx, le16_to_cpu(req->req_type));
+	if (ctx->sentinel != sentinel) {
+		/* can only be due to software bug, be loud */
+		netdev_err(bp->dev, "HWRM sentinel mismatch, req_type = %u\n",
+			   (u32)le16_to_cpu(req->req_type));
+		dump_stack();
+		return NULL;
+	}
+
+	return ctx;
+}
+
+/**
+ * hwrm_req_timeout() - Set the completion timeout for the request.
+ * @bp: The driver context.
+ * @req: The request to set the timeout.
+ * @timeout: The timeout in milliseconds.
+ *
+ * Set the timeout associated with the request for subsequent calls to
+ * hwrm_req_send(). Some requests are long running and require a different
+ * timeout than the default.
+ */
+void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+
+	if (ctx)
+		ctx->timeout = timeout;
+}
+
+/**
+ * hwrm_req_flags() - Set non internal flags of the ctx
+ * @bp: The driver context.
+ * @req: The request containing the HWRM command
+ * @flags: ctx flags that don't have BNXT_HWRM_INTERNAL_FLAG set
+ *
+ * ctx flags can be used by the callers to instruct how the subsequent
+ * hwrm_req_send() should behave. Example: callers can use hwrm_req_flags
+ * with BNXT_HWRM_CTX_SILENT to omit kernel prints of errors of hwrm_req_send()
+ * or with BNXT_HWRM_FULL_WAIT enforce hwrm_req_send() to wait for full timeout
+ * even if FW is not responding.
+ * This generic function can be used to set any flag that is not an internal flag
+ * of the HWRM module.
+ */
+void hwrm_req_flags(struct bnxt *bp, void *req, enum bnxt_hwrm_ctx_flags flags)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+
+	if (ctx)
+		ctx->flags |= (flags & HWRM_API_FLAGS);
+}
+
+/**
+ * hwrm_req_hold() - Claim ownership of the request's resources.
+ * @bp: The driver context.
+ * @req: A pointer to the request to own. The request will no longer be
+ *	consumed by calls to hwrm_req_send().
+ *
+ * Take ownership of the request. Ownership places responsibility on the
+ * caller to free the resources associated with the request via a call to
+ * hwrm_req_drop(). The caller taking ownership implies that a subsequent
+ * call to hwrm_req_send() will not consume the request (ie. sending will
+ * not free the associated resources if the request is owned by the caller).
+ * Taking ownership returns a reference to the response. Retaining and
+ * accessing the response data is the most common reason to take ownership
+ * of the request. Ownership can also be acquired in order to reuse the same
+ * request object across multiple invocations of hwrm_req_send().
+ *
+ * Return: A pointer to the response object.
+ *
+ * The resources associated with the response will remain available to the
+ * caller until ownership of the request is relinquished via a call to
+ * hwrm_req_drop(). It is not possible for hwrm_req_hold() to return NULL if
+ * a valid request is provided. A returned NULL value would imply a driver
+ * bug and the implementation will complain loudly in the logs to aid in
+ * detection. It should not be necessary to check the result for NULL.
+ */
+void *hwrm_req_hold(struct bnxt *bp, void *req)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+	struct input *input = (struct input *)req;
+
+	if (!ctx)
+		return NULL;
+
+	if (ctx->flags & BNXT_HWRM_INTERNAL_CTX_OWNED) {
+		/* can only be due to software bug, be loud */
+		netdev_err(bp->dev, "HWRM context already owned, req_type = %u\n",
+			   (u32)le16_to_cpu(input->req_type));
+		dump_stack();
+		return NULL;
+	}
+
+	ctx->flags |= BNXT_HWRM_INTERNAL_CTX_OWNED;
+	return ((u8 *)req) + BNXT_HWRM_RESP_OFFSET;
+}
+
+static void __hwrm_ctx_drop(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
+{
+	void *addr = ((u8 *)ctx) - BNXT_HWRM_CTX_OFFSET;
+	dma_addr_t dma_handle = ctx->dma_handle; /* save before invalidate */
+
+	/* invalidate, ensure ownership, sentinel and dma_handle are cleared */
+	memset(ctx, 0, sizeof(struct bnxt_hwrm_ctx));
+
+	/* return the buffer to the DMA pool */
+	if (dma_handle)
+		dma_pool_free(bp->hwrm_dma_pool, addr, dma_handle);
+}
+
+/**
+ * hwrm_req_drop() - Release all resources associated with the request.
+ * @bp: The driver context.
+ * @req: The request to consume, releasing the associated resources. The
+ *	request object and its associated response are no longer valid.
+ *
+ * It is legal to call hwrm_req_drop() on an unowned request, provided it
+ * has not already been consumed by hwrm_req_send() (for example, to release
+ * an aborted request). A given request should not be dropped more than once,
+ * nor should it be dropped after having been consumed by hwrm_req_send(). To
+ * do so is an error (the context will not be found and a stack trace will be
+ * rendered in the kernel log).
+ */
+void hwrm_req_drop(struct bnxt *bp, void *req)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+
+	if (ctx)
+		__hwrm_ctx_drop(bp, ctx);
+}
+
+static int __hwrm_to_stderr(u32 hwrm_err)
 {
 	switch (hwrm_err) {
 	case HWRM_ERR_CODE_SUCCESS:
@@ -64,78 +277,71 @@ static int bnxt_hwrm_to_stderr(u32 hwrm_err)
 	}
 }
 
-static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
-				 int timeout, bool silent)
+static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 {
-	int i, intr_process, rc, tmo_count;
-	struct input *req = msg;
-	u32 *data = msg;
-	u8 *valid;
-	u16 cp_ring_id, len = 0;
-	struct hwrm_err_output *resp = bp->hwrm_cmd_resp_addr;
-	u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN;
-	struct hwrm_short_input short_input = {0};
 	u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER;
 	u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM;
+	struct hwrm_short_input short_input = {0};
+	u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN;
+	unsigned int i, timeout, tmo_count;
 	u16 dst = BNXT_HWRM_CHNL_CHIMP;
+	int intr_process, rc = -EBUSY;
+	u32 *data = (u32 *)ctx->req;
+	u32 msg_len = ctx->req_len;
+	u16 cp_ring_id, len = 0;
+	u32 req_type;
+	u8 *valid;
 
-	if (BNXT_NO_FW_ACCESS(bp) &&
-	    le16_to_cpu(req->req_type) != HWRM_FUNC_RESET)
-		return -EBUSY;
+	if (ctx->flags & BNXT_HWRM_INTERNAL_RESP_DIRTY)
+		memset(ctx->resp, 0, PAGE_SIZE);
 
-	if (msg_len > BNXT_HWRM_MAX_REQ_LEN) {
-		if (msg_len > bp->hwrm_max_ext_req_len ||
-		    !bp->hwrm_short_cmd_req_addr)
-			return -EINVAL;
+	req_type = le16_to_cpu(ctx->req->req_type);
+	if (BNXT_NO_FW_ACCESS(bp) && req_type != HWRM_FUNC_RESET)
+		goto exit;
+
+	if (msg_len > BNXT_HWRM_MAX_REQ_LEN &&
+	    msg_len > bp->hwrm_max_ext_req_len) {
+		rc = -E2BIG;
+		goto exit;
 	}
 
-	if (bnxt_kong_hwrm_message(bp, req)) {
+	if (bnxt_kong_hwrm_message(bp, ctx->req)) {
 		dst = BNXT_HWRM_CHNL_KONG;
 		bar_offset = BNXT_GRCPF_REG_KONG_COMM;
 		doorbell_offset = BNXT_GRCPF_REG_KONG_COMM_TRIGGER;
+		if (le16_to_cpu(ctx->req->cmpl_ring) != INVALID_HW_RING_ID) {
+			netdev_err(bp->dev, "Ring completions not supported for KONG commands, req_type = %d\n",
+				   req_type);
+			rc = -EINVAL;
+			goto exit;
+		}
 	}
 
-	memset(resp, 0, PAGE_SIZE);
-	cp_ring_id = le16_to_cpu(req->cmpl_ring);
+	cp_ring_id = le16_to_cpu(ctx->req->cmpl_ring);
 	intr_process = (cp_ring_id == INVALID_HW_RING_ID) ? 0 : 1;
 
-	req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp, dst));
+	ctx->req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp, dst));
 	/* currently supports only one outstanding message */
 	if (intr_process)
-		bp->hwrm_intr_seq_id = le16_to_cpu(req->seq_id);
+		bp->hwrm_intr_seq_id = le16_to_cpu(ctx->req->seq_id);
 
 	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
 	    msg_len > BNXT_HWRM_MAX_REQ_LEN) {
-		void *short_cmd_req = bp->hwrm_short_cmd_req_addr;
-		u16 max_msg_len;
-
-		/* Set boundary for maximum extended request length for short
-		 * cmd format. If passed up from device use the max supported
-		 * internal req length.
-		 */
-		max_msg_len = bp->hwrm_max_ext_req_len;
-
-		memcpy(short_cmd_req, req, msg_len);
-		if (msg_len < max_msg_len)
-			memset(short_cmd_req + msg_len, 0,
-			       max_msg_len - msg_len);
-
-		short_input.req_type = req->req_type;
+		short_input.req_type = ctx->req->req_type;
 		short_input.signature =
 				cpu_to_le16(SHORT_REQ_SIGNATURE_SHORT_CMD);
 		short_input.size = cpu_to_le16(msg_len);
-		short_input.req_addr =
-			cpu_to_le64(bp->hwrm_short_cmd_req_dma_addr);
+		short_input.req_addr = cpu_to_le64(ctx->dma_handle);
 
 		data = (u32 *)&short_input;
 		msg_len = sizeof(short_input);
 
-		/* Sync memory write before updating doorbell */
-		wmb();
-
 		max_req_len = BNXT_HWRM_SHORT_REQ_LEN;
 	}
 
+	/* Ensure any associated DMA buffers are written before doorbell */
+	wmb();
+
 	/* Write request msg to hwrm channel */
 	__iowrite32_copy(bp->bar0 + bar_offset, data, msg_len / 4);
 
@@ -145,13 +351,13 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 	/* Ring channel doorbell */
 	writel(1, bp->bar0 + doorbell_offset);
 
-	if (!pci_is_enabled(bp->pdev))
-		return -ENODEV;
+	if (!pci_is_enabled(bp->pdev)) {
+		rc = -ENODEV;
+		goto exit;
+	}
 
-	if (!timeout)
-		timeout = DFLT_HWRM_CMD_TIMEOUT;
 	/* Limit timeout to an upper limit */
-	timeout = min(timeout, HWRM_CMD_MAX_TIMEOUT);
+	timeout = min_t(uint, ctx->timeout, HWRM_CMD_MAX_TIMEOUT);
 	/* convert timeout to usec */
 	timeout *= 1000;
 
@@ -174,13 +380,13 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 			 * check has failed.
 			 */
 			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
-				return -EBUSY;
+				goto exit;
 			/* on first few passes, just barely sleep */
 			if (i < HWRM_SHORT_TIMEOUT_COUNTER) {
 				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
 					     HWRM_SHORT_MAX_TIMEOUT);
 			} else {
-				if (HWRM_WAIT_MUST_ABORT(bp, req))
+				if (HWRM_WAIT_MUST_ABORT(bp, ctx))
 					break;
 				usleep_range(HWRM_MIN_TIMEOUT,
 					     HWRM_MAX_TIMEOUT);
@@ -188,13 +394,13 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 		}
 
 		if (bp->hwrm_intr_seq_id != (u16)~seq_id) {
-			if (!silent)
+			if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
 				netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
-					   le16_to_cpu(req->req_type));
-			return -EBUSY;
+					   le16_to_cpu(ctx->req->req_type));
+			goto exit;
 		}
-		len = le16_to_cpu(resp->resp_len);
-		valid = ((u8 *)resp) + len - 1;
+		len = le16_to_cpu(ctx->resp->resp_len);
+		valid = ((u8 *)ctx->resp) + len - 1;
 	} else {
 		int j;
 
@@ -204,8 +410,8 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 			 * check has failed.
 			 */
 			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
-				return -EBUSY;
-			len = le16_to_cpu(resp->resp_len);
+				goto exit;
+			len = le16_to_cpu(ctx->resp->resp_len);
 			if (len)
 				break;
 			/* on first few passes, just barely sleep */
@@ -213,7 +419,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
 					     HWRM_SHORT_MAX_TIMEOUT);
 			} else {
-				if (HWRM_WAIT_MUST_ABORT(bp, req))
+				if (HWRM_WAIT_MUST_ABORT(bp, ctx))
 					goto timeout_abort;
 				usleep_range(HWRM_MIN_TIMEOUT,
 					     HWRM_MAX_TIMEOUT);
@@ -222,16 +428,16 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 
 		if (i >= tmo_count) {
 timeout_abort:
-			if (!silent)
-				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
-					   HWRM_TOTAL_TIMEOUT(i),
-					   le16_to_cpu(req->req_type),
-					   le16_to_cpu(req->seq_id), len);
-			return -EBUSY;
+			if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
+				netdev_err(bp->dev, "Error (timeout: %u) msg {0x%x 0x%x} len:%d\n",
+					   hwrm_total_timeout(i),
+					   le16_to_cpu(ctx->req->req_type),
+					   le16_to_cpu(ctx->req->seq_id), len);
+			goto exit;
 		}
 
 		/* Last byte of resp contains valid bit */
-		valid = ((u8 *)resp) + len - 1;
+		valid = ((u8 *)ctx->resp) + len - 1;
 		for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; j++) {
 			/* make sure we read from updated DMA memory */
 			dma_rmb();
@@ -241,13 +447,13 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 		}
 
 		if (j >= HWRM_VALID_BIT_DELAY_USEC) {
-			if (!silent)
-				netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n",
-					   HWRM_TOTAL_TIMEOUT(i),
-					   le16_to_cpu(req->req_type),
-					   le16_to_cpu(req->seq_id), len,
+			if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
+				netdev_err(bp->dev, "Error (timeout: %u) msg {0x%x 0x%x} len:%d v:%d\n",
+					   hwrm_total_timeout(i),
+					   le16_to_cpu(ctx->req->req_type),
+					   le16_to_cpu(ctx->req->seq_id), len,
 					   *valid);
-			return -EBUSY;
+			goto exit;
 		}
 	}
 
@@ -256,12 +462,53 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 	 * a new field not implemented by old spec will read zero.
 	 */
 	*valid = 0;
-	rc = le16_to_cpu(resp->error_code);
-	if (rc && !silent)
+	rc = le16_to_cpu(ctx->resp->error_code);
+	if (rc && !(ctx->flags & BNXT_HWRM_CTX_SILENT)) {
 		netdev_err(bp->dev, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n",
-			   le16_to_cpu(resp->req_type),
-			   le16_to_cpu(resp->seq_id), rc);
-	return bnxt_hwrm_to_stderr(rc);
+			   le16_to_cpu(ctx->resp->req_type),
+			   le16_to_cpu(ctx->resp->seq_id), rc);
+	}
+	rc = __hwrm_to_stderr(rc);
+exit:
+	if (ctx->flags & BNXT_HWRM_INTERNAL_CTX_OWNED)
+		ctx->flags |= BNXT_HWRM_INTERNAL_RESP_DIRTY;
+	else
+		__hwrm_ctx_drop(bp, ctx);
+	return rc;
+}
+
+static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
+				 int timeout, bool silent)
+{
+	struct bnxt_hwrm_ctx default_ctx = {0};
+	struct bnxt_hwrm_ctx *ctx = &default_ctx;
+	struct input *req = msg;
+	int rc;
+
+	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
+	    msg_len > BNXT_HWRM_MAX_REQ_LEN) {
+		rc = __hwrm_req_init(bp, (void **)&req,
+				     le16_to_cpu(req->req_type), msg_len);
+		if (rc)
+			return rc;
+		memcpy(req, msg, msg_len); /* also copies resp_addr */
+		ctx = __hwrm_ctx(bp, (u8 *)req);
+		/* belts and brances, NULL ctx shouldn't be possible here */
+		if (!ctx)
+			return -ENOMEM;
+	}
+
+	ctx->req = req;
+	ctx->req_len = msg_len;
+	ctx->resp = bp->hwrm_cmd_resp_addr;
+	/* global response is not reallocated __GFP_ZERO between requests */
+	ctx->flags = BNXT_HWRM_INTERNAL_RESP_DIRTY;
+	ctx->timeout = timeout ?: DFLT_HWRM_CMD_TIMEOUT;
+	if (silent)
+		ctx->flags |= BNXT_HWRM_CTX_SILENT;
+
+	/* will consume req if allocated with __hwrm_req_init() */
+	return __hwrm_send(bp, ctx);
 }
 
 int _hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
@@ -295,3 +542,64 @@ int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	return rc;
 }
+
+/**
+ * hwrm_req_send() - Execute an HWRM command.
+ * @bp: The driver context.
+ * @req: A pointer to the request to send. The DMA resources associated with
+ *	the request will be released (ie. the request will be consumed) unless
+ *	ownership of the request has been assumed by the caller via a call to
+ *	hwrm_req_hold().
+ *
+ * Send an HWRM request to the device and wait for a response. The request is
+ * consumed if it is not owned by the caller. This function will block until
+ * the request has either completed or times out due to an error.
+ *
+ * Return: A result code.
+ *
+ * The result is zero on success, otherwise the negative error code indicates
+ * one of the following errors:
+ *	E2BIG: The request was too large.
+ *	EBUSY: The firmware is in a fatal state or the request timed out
+ *	EACCESS: HWRM access denied.
+ *	ENOSPC: HWRM resource allocation error.
+ *	EINVAL: Request parameters are invalid.
+ *	ENOMEM: HWRM has no buffers.
+ *	EAGAIN: HWRM busy or reset in progress.
+ *	EOPNOTSUPP: Invalid request type.
+ *	EIO: Any other error.
+ * Error handling is orthogonal to request ownership. An unowned request will
+ * still be consumed on error. If the caller owns the request, then the caller
+ * is responsible for releasing the resources. Otherwise, hwrm_req_send() will
+ * always consume the request.
+ */
+int hwrm_req_send(struct bnxt *bp, void *req)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+	int rc;
+
+	if (!ctx)
+		return -EINVAL;
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = __hwrm_send(bp, ctx);
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
+
+/**
+ * hwrm_req_send_silent() - A silent version of hwrm_req_send().
+ * @bp: The driver context.
+ * @req: The request to send without logging.
+ *
+ * The same as hwrm_req_send(), except that the request is silenced using
+ * hwrm_req_silence() prior the call. This version of the function is
+ * provided solely to preserve the legacy API’s flavor for this functionality.
+ *
+ * Return: A result code, see hwrm_req_send().
+ */
+int hwrm_req_send_silent(struct bnxt *bp, void *req)
+{
+	hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
+	return hwrm_req_send(bp, req);
+}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
index 940c792b54c7..199c646f5e71 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
@@ -12,6 +12,26 @@
 
 #include "bnxt_hsi.h"
 
+enum bnxt_hwrm_ctx_flags {
+	/* Update the HWRM_API_FLAGS right below for any new non-internal bit added here */
+	BNXT_HWRM_INTERNAL_CTX_OWNED	= BIT(0), /* caller owns the context */
+	BNXT_HWRM_INTERNAL_RESP_DIRTY	= BIT(1), /* response contains data */
+	BNXT_HWRM_CTX_SILENT		= BIT(2), /* squelch firmware errors */
+	BNXT_HWRM_FULL_WAIT		= BIT(3), /* wait for full timeout of HWRM command */
+};
+
+#define HWRM_API_FLAGS (BNXT_HWRM_CTX_SILENT | BNXT_HWRM_FULL_WAIT)
+
+struct bnxt_hwrm_ctx {
+	u64 sentinel;
+	dma_addr_t dma_handle;
+	struct output *resp;
+	struct input *req;
+	u32 req_len;
+	enum bnxt_hwrm_ctx_flags flags;
+	unsigned int timeout;
+};
+
 #define BNXT_HWRM_MAX_REQ_LEN		(bp->hwrm_max_req_len)
 #define BNXT_HWRM_SHORT_REQ_LEN		sizeof(struct hwrm_short_input)
 #define HWRM_CMD_MAX_TIMEOUT		40000
@@ -19,7 +39,17 @@
 #define HWRM_CMD_TIMEOUT		(bp->hwrm_cmd_timeout)
 #define HWRM_RESET_TIMEOUT		((HWRM_CMD_TIMEOUT) * 4)
 #define HWRM_COREDUMP_TIMEOUT		((HWRM_CMD_TIMEOUT) * 12)
+#define BNXT_HWRM_TARGET		0xffff
+#define BNXT_HWRM_NO_CMPL_RING		-1
 #define BNXT_HWRM_REQ_MAX_SIZE		128
+#define BNXT_HWRM_DMA_SIZE		(2 * PAGE_SIZE) /* space for req+resp */
+#define BNXT_HWRM_RESP_RESERVED		PAGE_SIZE
+#define BNXT_HWRM_RESP_OFFSET		(BNXT_HWRM_DMA_SIZE -		\
+					 BNXT_HWRM_RESP_RESERVED)
+#define BNXT_HWRM_CTX_OFFSET		(BNXT_HWRM_RESP_OFFSET -	\
+					 sizeof(struct bnxt_hwrm_ctx))
+#define BNXT_HWRM_DMA_ALIGN		16
+#define BNXT_HWRM_SENTINEL		0xb6e1f68a12e9a7eb /* arbitrary value */
 #define BNXT_HWRM_REQS_PER_PAGE		(BNXT_PAGE_SIZE /	\
 					 BNXT_HWRM_REQ_MAX_SIZE)
 #define HWRM_SHORT_MIN_TIMEOUT		3
@@ -29,14 +59,17 @@
 #define HWRM_MIN_TIMEOUT		25
 #define HWRM_MAX_TIMEOUT		40
 
-#define HWRM_WAIT_MUST_ABORT(bp, req)					\
-	(le16_to_cpu((req)->req_type) != HWRM_VER_GET &&		\
+#define HWRM_WAIT_MUST_ABORT(bp, ctx)					\
+	(le16_to_cpu((ctx)->req->req_type) != HWRM_VER_GET &&		\
 	 !bnxt_is_fw_healthy(bp))
 
-#define HWRM_TOTAL_TIMEOUT(n)	(((n) <= HWRM_SHORT_TIMEOUT_COUNTER) ?	\
-	((n) * HWRM_SHORT_MIN_TIMEOUT) :				\
-	(HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT +		\
-	 ((n) - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT))
+static inline unsigned int hwrm_total_timeout(unsigned int n)
+{
+	return n <= HWRM_SHORT_TIMEOUT_COUNTER ? n * HWRM_SHORT_MIN_TIMEOUT :
+		HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT +
+		(n - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT;
+}
+
 
 #define HWRM_VALID_BIT_DELAY_USEC	150
 
@@ -97,4 +130,13 @@ int _hwrm_send_message(struct bnxt *bp, void *msg, u32 len, int timeout);
 int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
 int hwrm_send_message(struct bnxt *bp, void *msg, u32 len, int timeout);
 int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
+int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len);
+#define hwrm_req_init(bp, req, req_type) \
+	__hwrm_req_init((bp), (void **)&(req), (req_type), sizeof(*(req)))
+void *hwrm_req_hold(struct bnxt *bp, void *req);
+void hwrm_req_drop(struct bnxt *bp, void *req);
+void hwrm_req_flags(struct bnxt *bp, void *req, enum bnxt_hwrm_ctx_flags flags);
+void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout);
+int hwrm_req_send(struct bnxt *bp, void *req);
+int hwrm_req_send_silent(struct bnxt *bp, void *req);
 #endif
-- 
2.18.1


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[PATCH net-next v2 05/11] bnxt_en: discard out of sequence HWRM responses

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 2246 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

During firmware crash recovery, it is possible for firmware to respond
to stale HWRM commands that have already timed out. Because response
buffers may be reused, any out of sequence responses need to be ignored
and only the matching seq_id should be accepted.

Also, READ_ONCE should be used for the reads from the DMA buffer to
ensure that the necessary loads are scheduled.

Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 21 +++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index a45f2a619086..621daf687a00 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -399,9 +399,10 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 					   le16_to_cpu(ctx->req->req_type));
 			goto exit;
 		}
-		len = le16_to_cpu(ctx->resp->resp_len);
+		len = le16_to_cpu(READ_ONCE(ctx->resp->resp_len));
 		valid = ((u8 *)ctx->resp) + len - 1;
 	} else {
+		__le16 seen_out_of_seq = ctx->req->seq_id; /* will never see */
 		int j;
 
 		/* Check if response len is updated */
@@ -411,9 +412,21 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 			 */
 			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
 				goto exit;
-			len = le16_to_cpu(ctx->resp->resp_len);
-			if (len)
-				break;
+			len = le16_to_cpu(READ_ONCE(ctx->resp->resp_len));
+			if (len) {
+				__le16 resp_seq = READ_ONCE(ctx->resp->seq_id);
+
+				if (resp_seq == ctx->req->seq_id)
+					break;
+				if (resp_seq != seen_out_of_seq) {
+					netdev_warn(bp->dev, "Discarding out of seq response: 0x%x for msg {0x%x 0x%x}\n",
+						    le16_to_cpu(resp_seq),
+						    le16_to_cpu(ctx->req->req_type),
+						    le16_to_cpu(ctx->req->seq_id));
+					seen_out_of_seq = resp_seq;
+				}
+			}
+
 			/* on first few passes, just barely sleep */
 			if (i < HWRM_SHORT_TIMEOUT_COUNTER) {
 				usleep_range(HWRM_SHORT_MIN_TIMEOUT,
-- 
2.18.1


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[PATCH net-next v2 06/11] bnxt_en: add HWRM request assignment API

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 3723 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

hwrm_req_replace() provides an assignment like operation to replace a
managed HWRM request object with data from a pre-built source. This is
useful for handling request data provided by higher layer HWRM clients.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 55 +++++++++++++++++++
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    |  1 +
 2 files changed, 56 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index 621daf687a00..39ef65025e17 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -147,6 +147,61 @@ void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout)
 		ctx->timeout = timeout;
 }
 
+/**
+ * hwrm_req_replace() - Replace request data.
+ * @bp: The driver context.
+ * @req: The request to modify. A call to hwrm_req_replace() is conceptually
+ *	an assignment of new_req to req. Subsequent calls to HWRM API functions,
+ *	such as hwrm_req_send(), should thus use req and not new_req (in fact,
+ *	calls to HWRM API functions will fail if non-managed request objects
+ *	are passed).
+ * @len: The length of new_req.
+ * @new_req: The pre-built request to copy or reference.
+ *
+ * Replaces the request data in req with that of new_req. This is useful in
+ * scenarios where a request object has already been constructed by a third
+ * party prior to creating a resource managed request using hwrm_req_init().
+ * Depending on the length, hwrm_req_replace() will either copy the new
+ * request data into the DMA memory allocated for req, or it will simply
+ * reference the new request and use it in lieu of req during subsequent
+ * calls to hwrm_req_send(). The resource management is associated with
+ * req and is independent of and does not apply to new_req. The caller must
+ * ensure that the lifetime of new_req is least as long as req.
+ *
+ * Return: zero on success, negative error code otherwise:
+ *     E2BIG: Request is too large.
+ *     EINVAL: Invalid request to modify.
+ */
+int hwrm_req_replace(struct bnxt *bp, void *req, void *new_req, u32 len)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+	struct input *internal_req = req;
+	u16 req_type;
+
+	if (!ctx)
+		return -EINVAL;
+
+	if (len > BNXT_HWRM_CTX_OFFSET)
+		return -E2BIG;
+
+	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) || len > BNXT_HWRM_MAX_REQ_LEN) {
+		memcpy(internal_req, new_req, len);
+	} else {
+		internal_req->req_type = ((struct input *)new_req)->req_type;
+		ctx->req = new_req;
+	}
+
+	ctx->req_len = len;
+	ctx->req->resp_addr = cpu_to_le64(ctx->dma_handle +
+					  BNXT_HWRM_RESP_OFFSET);
+
+	/* update sentinel for potentially new request type */
+	req_type = le16_to_cpu(internal_req->req_type);
+	ctx->sentinel = hwrm_calc_sentinel(ctx, req_type);
+
+	return 0;
+}
+
 /**
  * hwrm_req_flags() - Set non internal flags of the ctx
  * @bp: The driver context.
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
index 199c646f5e71..c58d84cc692a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
@@ -139,4 +139,5 @@ void hwrm_req_flags(struct bnxt *bp, void *req, enum bnxt_hwrm_ctx_flags flags);
 void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout);
 int hwrm_req_send(struct bnxt *bp, void *req);
 int hwrm_req_send_silent(struct bnxt *bp, void *req);
+int hwrm_req_replace(struct bnxt *bp, void *req, void *new_req, u32 len);
 #endif
-- 
2.18.1


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[PATCH net-next v2 07/11] bnxt_en: add support for HWRM request slices

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 8686 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

Slices are a mechanism for suballocating DMA mapped regions from the
request buffer. Such regions can be used for indirect command data
instead of creating new mappings with dma_alloc_coherent().

The advantage of using a slice is that the lifetime of the slice is
bound to the request and will be automatically unmapped when the
request is consumed.

A single external region is also supported. This allows for regions
that will not fit inside the spare request buffer space such that
the same API can be used consistently even for larger mappings.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 115 +++++++++++++++++-
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    |   7 ++
 2 files changed, 120 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index 39ef65025e17..6609a86d5226 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -91,6 +91,9 @@ int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len)
 	ctx->dma_handle = dma_handle;
 	ctx->flags = 0; /* __GFP_ZERO, but be explicit regarding ownership */
 	ctx->timeout = bp->hwrm_cmd_timeout ?: DFLT_HWRM_CMD_TIMEOUT;
+	ctx->allocated = BNXT_HWRM_DMA_SIZE - BNXT_HWRM_CTX_OFFSET;
+	ctx->gfp = GFP_KERNEL;
+	ctx->slice_addr = NULL;
 
 	/* initialize common request fields */
 	ctx->req->req_type = cpu_to_le16(req_type);
@@ -147,6 +150,29 @@ void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout)
 		ctx->timeout = timeout;
 }
 
+/**
+ * hwrm_req_alloc_flags() - Sets GFP allocation flags for slices.
+ * @bp: The driver context.
+ * @req: The request for which calls to hwrm_req_dma_slice() will have altered
+ *	allocation flags.
+ * @flags: A bitmask of GFP flags. These flags are passed to
+ *	dma_alloc_coherent() whenever it is used to allocate backing memory
+ *	for slices. Note that calls to hwrm_req_dma_slice() will not always
+ *	result in new allocations, however, memory suballocated from the
+ *	request buffer is already __GFP_ZERO.
+ *
+ * Sets the GFP allocation flags associated with the request for subsequent
+ * calls to hwrm_req_dma_slice(). This can be useful for specifying __GFP_ZERO
+ * for slice allocations.
+ */
+void hwrm_req_alloc_flags(struct bnxt *bp, void *req, gfp_t gfp)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+
+	if (ctx)
+		ctx->gfp = gfp;
+}
+
 /**
  * hwrm_req_replace() - Replace request data.
  * @bp: The driver context.
@@ -166,7 +192,8 @@ void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout)
  * reference the new request and use it in lieu of req during subsequent
  * calls to hwrm_req_send(). The resource management is associated with
  * req and is independent of and does not apply to new_req. The caller must
- * ensure that the lifetime of new_req is least as long as req.
+ * ensure that the lifetime of new_req is least as long as req. Any slices
+ * that may have been associated with the original request are released.
  *
  * Return: zero on success, negative error code otherwise:
  *     E2BIG: Request is too large.
@@ -184,6 +211,15 @@ int hwrm_req_replace(struct bnxt *bp, void *req, void *new_req, u32 len)
 	if (len > BNXT_HWRM_CTX_OFFSET)
 		return -E2BIG;
 
+	/* free any existing slices */
+	ctx->allocated = BNXT_HWRM_DMA_SIZE - BNXT_HWRM_CTX_OFFSET;
+	if (ctx->slice_addr) {
+		dma_free_coherent(&bp->pdev->dev, ctx->slice_size,
+				  ctx->slice_addr, ctx->slice_handle);
+		ctx->slice_addr = NULL;
+	}
+	ctx->gfp = GFP_KERNEL;
+
 	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) || len > BNXT_HWRM_MAX_REQ_LEN) {
 		memcpy(internal_req, new_req, len);
 	} else {
@@ -274,6 +310,11 @@ static void __hwrm_ctx_drop(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 	void *addr = ((u8 *)ctx) - BNXT_HWRM_CTX_OFFSET;
 	dma_addr_t dma_handle = ctx->dma_handle; /* save before invalidate */
 
+	/* unmap any auxiliary DMA slice */
+	if (ctx->slice_addr)
+		dma_free_coherent(&bp->pdev->dev, ctx->slice_size,
+				  ctx->slice_addr, ctx->slice_handle);
+
 	/* invalidate, ensure ownership, sentinel and dma_handle are cleared */
 	memset(ctx, 0, sizeof(struct bnxt_hwrm_ctx));
 
@@ -286,7 +327,8 @@ static void __hwrm_ctx_drop(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
  * hwrm_req_drop() - Release all resources associated with the request.
  * @bp: The driver context.
  * @req: The request to consume, releasing the associated resources. The
- *	request object and its associated response are no longer valid.
+ *	request object, any slices, and its associated response are no
+ *	longer valid.
  *
  * It is legal to call hwrm_req_drop() on an unowned request, provided it
  * has not already been consumed by hwrm_req_send() (for example, to release
@@ -671,3 +713,72 @@ int hwrm_req_send_silent(struct bnxt *bp, void *req)
 	hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
 	return hwrm_req_send(bp, req);
 }
+
+/**
+ * hwrm_req_dma_slice() - Allocate a slice of DMA mapped memory.
+ * @bp: The driver context.
+ * @req: The request for which indirect data will be associated.
+ * @size: The size of the allocation.
+ * @dma: The bus address associated with the allocation. The HWRM API has no
+ *	knowledge about the type of the request and so cannot infer how the
+ *	caller intends to use the indirect data. Thus, the caller is
+ *	responsible for configuring the request object appropriately to
+ *	point to the associated indirect memory. Note, DMA handle has the
+ *	same definition as it does in dma_alloc_coherent(), the caller is
+ *	responsible for endian conversions via cpu_to_le64() before assigning
+ *	this address.
+ *
+ * Allocates DMA mapped memory for indirect data related to a request. The
+ * lifetime of the DMA resources will be bound to that of the request (ie.
+ * they will be automatically released when the request is either consumed by
+ * hwrm_req_send() or dropped by hwrm_req_drop()). Small allocations are
+ * efficiently suballocated out of the request buffer space, hence the name
+ * slice, while larger requests are satisfied via an underlying call to
+ * dma_alloc_coherent(). Multiple suballocations are supported, however, only
+ * one externally mapped region is.
+ *
+ * Return: The kernel virtual address of the DMA mapping.
+ */
+void *
+hwrm_req_dma_slice(struct bnxt *bp, void *req, u32 size, dma_addr_t *dma_handle)
+{
+	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
+	u8 *end = ((u8 *)req) + BNXT_HWRM_DMA_SIZE;
+	struct input *input = req;
+	u8 *addr, *req_addr = req;
+	u32 max_offset, offset;
+
+	if (!ctx)
+		return NULL;
+
+	max_offset = BNXT_HWRM_DMA_SIZE - ctx->allocated;
+	offset = max_offset - size;
+	offset = ALIGN_DOWN(offset, BNXT_HWRM_DMA_ALIGN);
+	addr = req_addr + offset;
+
+	if (addr < req_addr + max_offset && req_addr + ctx->req_len <= addr) {
+		ctx->allocated = end - addr;
+		*dma_handle = ctx->dma_handle + offset;
+		return addr;
+	}
+
+	/* could not suballocate from ctx buffer, try create a new mapping */
+	if (ctx->slice_addr) {
+		/* if one exists, can only be due to software bug, be loud */
+		netdev_err(bp->dev, "HWRM refusing to reallocate DMA slice, req_type = %u\n",
+			   (u32)le16_to_cpu(input->req_type));
+		dump_stack();
+		return NULL;
+	}
+
+	addr = dma_alloc_coherent(&bp->pdev->dev, size, dma_handle, ctx->gfp);
+
+	if (!addr)
+		return NULL;
+
+	ctx->slice_addr = addr;
+	ctx->slice_size = size;
+	ctx->slice_handle = *dma_handle;
+
+	return addr;
+}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
index c58d84cc692a..b3af7a88e2c7 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
@@ -27,9 +27,14 @@ struct bnxt_hwrm_ctx {
 	dma_addr_t dma_handle;
 	struct output *resp;
 	struct input *req;
+	dma_addr_t slice_handle;
+	void *slice_addr;
+	u32 slice_size;
 	u32 req_len;
 	enum bnxt_hwrm_ctx_flags flags;
 	unsigned int timeout;
+	u32 allocated;
+	gfp_t gfp;
 };
 
 #define BNXT_HWRM_MAX_REQ_LEN		(bp->hwrm_max_req_len)
@@ -140,4 +145,6 @@ void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout);
 int hwrm_req_send(struct bnxt *bp, void *req);
 int hwrm_req_send_silent(struct bnxt *bp, void *req);
 int hwrm_req_replace(struct bnxt *bp, void *req, void *new_req, u32 len);
+void hwrm_req_alloc_flags(struct bnxt *bp, void *req, gfp_t flags);
+void *hwrm_req_dma_slice(struct bnxt *bp, void *req, u32 size, dma_addr_t *dma);
 #endif
-- 
2.18.1


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[PATCH net-next v2 08/11] bnxt_en: use link_lock instead of hwrm_cmd_lock to protect link_info

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 2843 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

We currently use the hwrm_cmd_lock to serialize the update of the
firmware's link status response data and the copying of link status data
to the VF.  This won't work when we update the firmware message APIs, so
we use the link_lock mutex instead.  All link_info data should be
updated under the link_lock mutex.  Also add link_lock to functions that
touch link_info in __bnxt_open_nic() and bnxt_probe_phy(). The locking
is probably not strictly necessary during probe, but it's more consistent.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c       | 5 +++++
 drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 23486f382b91..b9aa56cc10d2 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -10008,7 +10008,9 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init)
 	bnxt_tx_enable(bp);
 	mod_timer(&bp->timer, jiffies + bp->current_interval);
 	/* Poll link status and check for SFP+ module status */
+	mutex_lock(&bp->link_lock);
 	bnxt_get_port_module_status(bp);
+	mutex_unlock(&bp->link_lock);
 
 	/* VF-reps may need to be re-opened after the PF is re-opened */
 	if (BNXT_PF(bp))
@@ -12599,8 +12601,10 @@ static int bnxt_probe_phy(struct bnxt *bp, bool fw_dflt)
 	if (!fw_dflt)
 		return 0;
 
+	mutex_lock(&bp->link_lock);
 	rc = bnxt_update_link(bp, false);
 	if (rc) {
+		mutex_unlock(&bp->link_lock);
 		netdev_err(bp->dev, "Probe phy can't update link (rc: %x)\n",
 			   rc);
 		return rc;
@@ -12613,6 +12617,7 @@ static int bnxt_probe_phy(struct bnxt *bp, bool fw_dflt)
 		link_info->support_auto_speeds = link_info->support_speeds;
 
 	bnxt_init_ethtool_link_settings(bp);
+	mutex_unlock(&bp->link_lock);
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index 7b0e308e44c2..07e8e9f657e4 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -1032,10 +1032,10 @@ static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
 
 		phy_qcfg_req =
 		(struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
-		mutex_lock(&bp->hwrm_cmd_lock);
+		mutex_lock(&bp->link_lock);
 		memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
 		       sizeof(phy_qcfg_resp));
-		mutex_unlock(&bp->hwrm_cmd_lock);
+		mutex_unlock(&bp->link_lock);
 		phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
 		phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
 		phy_qcfg_resp.valid = 1;
-- 
2.18.1


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[PATCH net-next v2 09/11] bnxt_en: update all firmware calls to use the new APIs

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 217072 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

The conversion follows this general pattern for most of the calls:

1. The input message is changed from a stack variable initialized
using bnxt_hwrm_cmd_hdr_init() to a pointer allocated and intialized
using hwrm_req_init().

2. If we don't need to read the firmware response, the hwrm_send_message()
call is replaced with hwrm_req_send().

3. If we need to read the firmware response, the mutex lock is replaced
by hwrm_req_hold() to hold the response.  When the response is read, the
mutex unlock is replaced by hwrm_req_drop().

If additional DMA buffers are needed for firmware response data, the
hwrm_req_dma_slice() is used instead of calling dma_alloc_coherent().

Some minor refactoring is also done while doing these conversions.

v2: Fix unintialized variable warnings in __bnxt_hwrm_get_tx_rings()
and bnxt_approve_mac()

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 1747 ++++++++++-------
 drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c |  184 +-
 .../net/ethernet/broadcom/bnxt/bnxt_devlink.c |   80 +-
 .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c |  547 +++---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c |  129 +-
 .../net/ethernet/broadcom/bnxt/bnxt_sriov.c   |  450 +++--
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c  |  263 +--
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c |   30 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c |   61 +-
 9 files changed, 1953 insertions(+), 1538 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index b9aa56cc10d2..6e9ca9b59e51 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4043,8 +4043,8 @@ static void bnxt_copy_hw_masks(u64 *mask_arr, __le64 *hw_mask_arr, int count)
 static int bnxt_hwrm_func_qstat_ext(struct bnxt *bp,
 				    struct bnxt_stats_mem *stats)
 {
-	struct hwrm_func_qstats_ext_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_qstats_ext_input req = {0};
+	struct hwrm_func_qstats_ext_output *resp;
+	struct hwrm_func_qstats_ext_input *req;
 	__le64 *hw_masks;
 	int rc;
 
@@ -4052,19 +4052,20 @@ static int bnxt_hwrm_func_qstat_ext(struct bnxt *bp,
 	    !(bp->flags & BNXT_FLAG_CHIP_P5))
 		return -EOPNOTSUPP;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QSTATS_EXT, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
-	req.flags = FUNC_QSTATS_EXT_REQ_FLAGS_COUNTER_MASK;
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QSTATS_EXT);
 	if (rc)
-		goto qstat_exit;
+		return rc;
 
-	hw_masks = &resp->rx_ucast_pkts;
-	bnxt_copy_hw_masks(stats->hw_masks, hw_masks, stats->len / 8);
+	req->fid = cpu_to_le16(0xffff);
+	req->flags = FUNC_QSTATS_EXT_REQ_FLAGS_COUNTER_MASK;
 
-qstat_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	if (!rc) {
+		hw_masks = &resp->rx_ucast_pkts;
+		bnxt_copy_hw_masks(stats->hw_masks, hw_masks, stats->len / 8);
+	}
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -4533,34 +4534,35 @@ static void bnxt_enable_int(struct bnxt *bp)
 int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap, int bmap_size,
 			    bool async_only)
 {
-	struct hwrm_func_drv_rgtr_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_drv_rgtr_input req = {0};
 	DECLARE_BITMAP(async_events_bmap, 256);
 	u32 *events = (u32 *)async_events_bmap;
+	struct hwrm_func_drv_rgtr_output *resp;
+	struct hwrm_func_drv_rgtr_input *req;
 	u32 flags;
 	int rc, i;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_DRV_RGTR, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_DRV_RGTR);
+	if (rc)
+		return rc;
 
-	req.enables =
-		cpu_to_le32(FUNC_DRV_RGTR_REQ_ENABLES_OS_TYPE |
-			    FUNC_DRV_RGTR_REQ_ENABLES_VER |
-			    FUNC_DRV_RGTR_REQ_ENABLES_ASYNC_EVENT_FWD);
+	req->enables = cpu_to_le32(FUNC_DRV_RGTR_REQ_ENABLES_OS_TYPE |
+				   FUNC_DRV_RGTR_REQ_ENABLES_VER |
+				   FUNC_DRV_RGTR_REQ_ENABLES_ASYNC_EVENT_FWD);
 
-	req.os_type = cpu_to_le16(FUNC_DRV_RGTR_REQ_OS_TYPE_LINUX);
+	req->os_type = cpu_to_le16(FUNC_DRV_RGTR_REQ_OS_TYPE_LINUX);
 	flags = FUNC_DRV_RGTR_REQ_FLAGS_16BIT_VER_MODE;
 	if (bp->fw_cap & BNXT_FW_CAP_HOT_RESET)
 		flags |= FUNC_DRV_RGTR_REQ_FLAGS_HOT_RESET_SUPPORT;
 	if (bp->fw_cap & BNXT_FW_CAP_ERROR_RECOVERY)
 		flags |= FUNC_DRV_RGTR_REQ_FLAGS_ERROR_RECOVERY_SUPPORT |
 			 FUNC_DRV_RGTR_REQ_FLAGS_MASTER_SUPPORT;
-	req.flags = cpu_to_le32(flags);
-	req.ver_maj_8b = DRV_VER_MAJ;
-	req.ver_min_8b = DRV_VER_MIN;
-	req.ver_upd_8b = DRV_VER_UPD;
-	req.ver_maj = cpu_to_le16(DRV_VER_MAJ);
-	req.ver_min = cpu_to_le16(DRV_VER_MIN);
-	req.ver_upd = cpu_to_le16(DRV_VER_UPD);
+	req->flags = cpu_to_le32(flags);
+	req->ver_maj_8b = DRV_VER_MAJ;
+	req->ver_min_8b = DRV_VER_MIN;
+	req->ver_upd_8b = DRV_VER_UPD;
+	req->ver_maj = cpu_to_le16(DRV_VER_MAJ);
+	req->ver_min = cpu_to_le16(DRV_VER_MIN);
+	req->ver_upd = cpu_to_le16(DRV_VER_UPD);
 
 	if (BNXT_PF(bp)) {
 		u32 data[8];
@@ -4577,14 +4579,14 @@ int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap, int bmap_size,
 		}
 
 		for (i = 0; i < 8; i++)
-			req.vf_req_fwd[i] = cpu_to_le32(data[i]);
+			req->vf_req_fwd[i] = cpu_to_le32(data[i]);
 
-		req.enables |=
+		req->enables |=
 			cpu_to_le32(FUNC_DRV_RGTR_REQ_ENABLES_VF_REQ_FWD);
 	}
 
 	if (bp->fw_cap & BNXT_FW_CAP_OVS_64BIT_HANDLE)
-		req.flags |= cpu_to_le32(
+		req->flags |= cpu_to_le32(
 			FUNC_DRV_RGTR_REQ_FLAGS_FLOW_HANDLE_64BIT_MODE);
 
 	memset(async_events_bmap, 0, sizeof(async_events_bmap));
@@ -4603,57 +4605,63 @@ int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap, int bmap_size,
 		}
 	}
 	for (i = 0; i < 8; i++)
-		req.async_event_fwd[i] |= cpu_to_le32(events[i]);
+		req->async_event_fwd[i] |= cpu_to_le32(events[i]);
 
 	if (async_only)
-		req.enables =
+		req->enables =
 			cpu_to_le32(FUNC_DRV_RGTR_REQ_ENABLES_ASYNC_EVENT_FWD);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		set_bit(BNXT_STATE_DRV_REGISTERED, &bp->state);
 		if (resp->flags &
 		    cpu_to_le32(FUNC_DRV_RGTR_RESP_FLAGS_IF_CHANGE_SUPPORTED))
 			bp->fw_cap |= BNXT_FW_CAP_IF_CHANGE;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_func_drv_unrgtr(struct bnxt *bp)
 {
-	struct hwrm_func_drv_unrgtr_input req = {0};
+	struct hwrm_func_drv_unrgtr_input *req;
+	int rc;
 
 	if (!test_and_clear_bit(BNXT_STATE_DRV_REGISTERED, &bp->state))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_DRV_UNRGTR, -1, -1);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_DRV_UNRGTR);
+	if (rc)
+		return rc;
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_tunnel_dst_port_free(struct bnxt *bp, u8 tunnel_type)
 {
-	u32 rc = 0;
-	struct hwrm_tunnel_dst_port_free_input req = {0};
+	struct hwrm_tunnel_dst_port_free_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_TUNNEL_DST_PORT_FREE, -1, -1);
-	req.tunnel_type = tunnel_type;
+	rc = hwrm_req_init(bp, req, HWRM_TUNNEL_DST_PORT_FREE);
+	if (rc)
+		return rc;
+
+	req->tunnel_type = tunnel_type;
 
 	switch (tunnel_type) {
 	case TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_VXLAN:
-		req.tunnel_dst_port_id = cpu_to_le16(bp->vxlan_fw_dst_port_id);
+		req->tunnel_dst_port_id = cpu_to_le16(bp->vxlan_fw_dst_port_id);
 		bp->vxlan_fw_dst_port_id = INVALID_HW_RING_ID;
 		break;
 	case TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_GENEVE:
-		req.tunnel_dst_port_id = cpu_to_le16(bp->nge_fw_dst_port_id);
+		req->tunnel_dst_port_id = cpu_to_le16(bp->nge_fw_dst_port_id);
 		bp->nge_fw_dst_port_id = INVALID_HW_RING_ID;
 		break;
 	default:
 		break;
 	}
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		netdev_err(bp->dev, "hwrm_tunnel_dst_port_free failed. rc:%d\n",
 			   rc);
@@ -4663,17 +4671,19 @@ static int bnxt_hwrm_tunnel_dst_port_free(struct bnxt *bp, u8 tunnel_type)
 static int bnxt_hwrm_tunnel_dst_port_alloc(struct bnxt *bp, __be16 port,
 					   u8 tunnel_type)
 {
-	u32 rc = 0;
-	struct hwrm_tunnel_dst_port_alloc_input req = {0};
-	struct hwrm_tunnel_dst_port_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_tunnel_dst_port_alloc_output *resp;
+	struct hwrm_tunnel_dst_port_alloc_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_TUNNEL_DST_PORT_ALLOC, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_TUNNEL_DST_PORT_ALLOC);
+	if (rc)
+		return rc;
 
-	req.tunnel_type = tunnel_type;
-	req.tunnel_dst_port_val = port;
+	req->tunnel_type = tunnel_type;
+	req->tunnel_dst_port_val = port;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc) {
 		netdev_err(bp->dev, "hwrm_tunnel_dst_port_alloc failed. rc:%d\n",
 			   rc);
@@ -4693,33 +4703,40 @@ static int bnxt_hwrm_tunnel_dst_port_alloc(struct bnxt *bp, __be16 port,
 	}
 
 err_out:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_cfa_l2_set_rx_mask(struct bnxt *bp, u16 vnic_id)
 {
-	struct hwrm_cfa_l2_set_rx_mask_input req = {0};
+	struct hwrm_cfa_l2_set_rx_mask_input *req;
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_L2_SET_RX_MASK, -1, -1);
-	req.vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_L2_SET_RX_MASK);
+	if (rc)
+		return rc;
 
-	req.num_mc_entries = cpu_to_le32(vnic->mc_list_count);
-	req.mc_tbl_addr = cpu_to_le64(vnic->mc_list_mapping);
-	req.mask = cpu_to_le32(vnic->rx_mask);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+	req->num_mc_entries = cpu_to_le32(vnic->mc_list_count);
+	req->mc_tbl_addr = cpu_to_le64(vnic->mc_list_mapping);
+	req->mask = cpu_to_le32(vnic->rx_mask);
+	return hwrm_req_send_silent(bp, req);
 }
 
 #ifdef CONFIG_RFS_ACCEL
 static int bnxt_hwrm_cfa_ntuple_filter_free(struct bnxt *bp,
 					    struct bnxt_ntuple_filter *fltr)
 {
-	struct hwrm_cfa_ntuple_filter_free_input req = {0};
+	struct hwrm_cfa_ntuple_filter_free_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_NTUPLE_FILTER_FREE, -1, -1);
-	req.ntuple_filter_id = fltr->filter_id;
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_NTUPLE_FILTER_FREE);
+	if (rc)
+		return rc;
+
+	req->ntuple_filter_id = fltr->filter_id;
+	return hwrm_req_send(bp, req);
 }
 
 #define BNXT_NTP_FLTR_FLAGS					\
@@ -4744,69 +4761,70 @@ static int bnxt_hwrm_cfa_ntuple_filter_free(struct bnxt *bp,
 static int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt *bp,
 					     struct bnxt_ntuple_filter *fltr)
 {
-	struct hwrm_cfa_ntuple_filter_alloc_input req = {0};
 	struct hwrm_cfa_ntuple_filter_alloc_output *resp;
+	struct hwrm_cfa_ntuple_filter_alloc_input *req;
 	struct flow_keys *keys = &fltr->fkeys;
 	struct bnxt_vnic_info *vnic;
 	u32 flags = 0;
-	int rc = 0;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_NTUPLE_FILTER_ALLOC, -1, -1);
-	req.l2_filter_id = bp->vnic_info[0].fw_l2_filter_id[fltr->l2_fltr_idx];
+	rc = hwrm_req_init(bp, req, HWRM_CFA_NTUPLE_FILTER_ALLOC);
+	if (rc)
+		return rc;
+
+	req->l2_filter_id = bp->vnic_info[0].fw_l2_filter_id[fltr->l2_fltr_idx];
 
 	if (bp->fw_cap & BNXT_FW_CAP_CFA_RFS_RING_TBL_IDX_V2) {
 		flags = CFA_NTUPLE_FILTER_ALLOC_REQ_FLAGS_DEST_RFS_RING_IDX;
-		req.dst_id = cpu_to_le16(fltr->rxq);
+		req->dst_id = cpu_to_le16(fltr->rxq);
 	} else {
 		vnic = &bp->vnic_info[fltr->rxq + 1];
-		req.dst_id = cpu_to_le16(vnic->fw_vnic_id);
+		req->dst_id = cpu_to_le16(vnic->fw_vnic_id);
 	}
-	req.flags = cpu_to_le32(flags);
-	req.enables = cpu_to_le32(BNXT_NTP_FLTR_FLAGS);
+	req->flags = cpu_to_le32(flags);
+	req->enables = cpu_to_le32(BNXT_NTP_FLTR_FLAGS);
 
-	req.ethertype = htons(ETH_P_IP);
-	memcpy(req.src_macaddr, fltr->src_mac_addr, ETH_ALEN);
-	req.ip_addr_type = CFA_NTUPLE_FILTER_ALLOC_REQ_IP_ADDR_TYPE_IPV4;
-	req.ip_protocol = keys->basic.ip_proto;
+	req->ethertype = htons(ETH_P_IP);
+	memcpy(req->src_macaddr, fltr->src_mac_addr, ETH_ALEN);
+	req->ip_addr_type = CFA_NTUPLE_FILTER_ALLOC_REQ_IP_ADDR_TYPE_IPV4;
+	req->ip_protocol = keys->basic.ip_proto;
 
 	if (keys->basic.n_proto == htons(ETH_P_IPV6)) {
 		int i;
 
-		req.ethertype = htons(ETH_P_IPV6);
-		req.ip_addr_type =
+		req->ethertype = htons(ETH_P_IPV6);
+		req->ip_addr_type =
 			CFA_NTUPLE_FILTER_ALLOC_REQ_IP_ADDR_TYPE_IPV6;
-		*(struct in6_addr *)&req.src_ipaddr[0] =
+		*(struct in6_addr *)&req->src_ipaddr[0] =
 			keys->addrs.v6addrs.src;
-		*(struct in6_addr *)&req.dst_ipaddr[0] =
+		*(struct in6_addr *)&req->dst_ipaddr[0] =
 			keys->addrs.v6addrs.dst;
 		for (i = 0; i < 4; i++) {
-			req.src_ipaddr_mask[i] = cpu_to_be32(0xffffffff);
-			req.dst_ipaddr_mask[i] = cpu_to_be32(0xffffffff);
+			req->src_ipaddr_mask[i] = cpu_to_be32(0xffffffff);
+			req->dst_ipaddr_mask[i] = cpu_to_be32(0xffffffff);
 		}
 	} else {
-		req.src_ipaddr[0] = keys->addrs.v4addrs.src;
-		req.src_ipaddr_mask[0] = cpu_to_be32(0xffffffff);
-		req.dst_ipaddr[0] = keys->addrs.v4addrs.dst;
-		req.dst_ipaddr_mask[0] = cpu_to_be32(0xffffffff);
+		req->src_ipaddr[0] = keys->addrs.v4addrs.src;
+		req->src_ipaddr_mask[0] = cpu_to_be32(0xffffffff);
+		req->dst_ipaddr[0] = keys->addrs.v4addrs.dst;
+		req->dst_ipaddr_mask[0] = cpu_to_be32(0xffffffff);
 	}
 	if (keys->control.flags & FLOW_DIS_ENCAPSULATION) {
-		req.enables |= cpu_to_le32(BNXT_NTP_TUNNEL_FLTR_FLAG);
-		req.tunnel_type =
+		req->enables |= cpu_to_le32(BNXT_NTP_TUNNEL_FLTR_FLAG);
+		req->tunnel_type =
 			CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_ANYTUNNEL;
 	}
 
-	req.src_port = keys->ports.src;
-	req.src_port_mask = cpu_to_be16(0xffff);
-	req.dst_port = keys->ports.dst;
-	req.dst_port_mask = cpu_to_be16(0xffff);
+	req->src_port = keys->ports.src;
+	req->src_port_mask = cpu_to_be16(0xffff);
+	req->dst_port = keys->ports.dst;
+	req->dst_port_mask = cpu_to_be16(0xffff);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc) {
-		resp = bnxt_get_hwrm_resp_addr(bp, &req);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	if (!rc)
 		fltr->filter_id = resp->ntuple_filter_id;
-	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 #endif
@@ -4814,62 +4832,62 @@ static int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt *bp,
 static int bnxt_hwrm_set_vnic_filter(struct bnxt *bp, u16 vnic_id, u16 idx,
 				     u8 *mac_addr)
 {
-	u32 rc = 0;
-	struct hwrm_cfa_l2_filter_alloc_input req = {0};
-	struct hwrm_cfa_l2_filter_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_cfa_l2_filter_alloc_output *resp;
+	struct hwrm_cfa_l2_filter_alloc_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_CFA_L2_FILTER_ALLOC);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_L2_FILTER_ALLOC, -1, -1);
-	req.flags = cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_FLAGS_PATH_RX);
+	req->flags = cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_FLAGS_PATH_RX);
 	if (!BNXT_CHIP_TYPE_NITRO_A0(bp))
-		req.flags |=
+		req->flags |=
 			cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_FLAGS_OUTERMOST);
-	req.dst_id = cpu_to_le16(bp->vnic_info[vnic_id].fw_vnic_id);
-	req.enables =
+	req->dst_id = cpu_to_le16(bp->vnic_info[vnic_id].fw_vnic_id);
+	req->enables =
 		cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_ENABLES_L2_ADDR |
 			    CFA_L2_FILTER_ALLOC_REQ_ENABLES_DST_ID |
 			    CFA_L2_FILTER_ALLOC_REQ_ENABLES_L2_ADDR_MASK);
-	memcpy(req.l2_addr, mac_addr, ETH_ALEN);
-	req.l2_addr_mask[0] = 0xff;
-	req.l2_addr_mask[1] = 0xff;
-	req.l2_addr_mask[2] = 0xff;
-	req.l2_addr_mask[3] = 0xff;
-	req.l2_addr_mask[4] = 0xff;
-	req.l2_addr_mask[5] = 0xff;
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	memcpy(req->l2_addr, mac_addr, ETH_ALEN);
+	req->l2_addr_mask[0] = 0xff;
+	req->l2_addr_mask[1] = 0xff;
+	req->l2_addr_mask[2] = 0xff;
+	req->l2_addr_mask[3] = 0xff;
+	req->l2_addr_mask[4] = 0xff;
+	req->l2_addr_mask[5] = 0xff;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		bp->vnic_info[vnic_id].fw_l2_filter_id[idx] =
 							resp->l2_filter_id;
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_clear_vnic_filter(struct bnxt *bp)
 {
+	struct hwrm_cfa_l2_filter_free_input *req;
 	u16 i, j, num_of_vnics = 1; /* only vnic 0 supported */
-	int rc = 0;
+	int rc;
 
 	/* Any associated ntuple filters will also be cleared by firmware. */
-	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_L2_FILTER_FREE);
+	if (rc)
+		return rc;
+	hwrm_req_hold(bp, req);
 	for (i = 0; i < num_of_vnics; i++) {
 		struct bnxt_vnic_info *vnic = &bp->vnic_info[i];
 
 		for (j = 0; j < vnic->uc_filter_count; j++) {
-			struct hwrm_cfa_l2_filter_free_input req = {0};
+			req->l2_filter_id = vnic->fw_l2_filter_id[j];
 
-			bnxt_hwrm_cmd_hdr_init(bp, &req,
-					       HWRM_CFA_L2_FILTER_FREE, -1, -1);
-
-			req.l2_filter_id = vnic->fw_l2_filter_id[j];
-
-			rc = _hwrm_send_message(bp, &req, sizeof(req),
-						HWRM_CMD_TIMEOUT);
+			rc = hwrm_req_send(bp, req);
 		}
 		vnic->uc_filter_count = 0;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
-
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -4877,12 +4895,15 @@ static int bnxt_hwrm_vnic_set_tpa(struct bnxt *bp, u16 vnic_id, u32 tpa_flags)
 {
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
 	u16 max_aggs = VNIC_TPA_CFG_REQ_MAX_AGGS_MAX;
-	struct hwrm_vnic_tpa_cfg_input req = {0};
+	struct hwrm_vnic_tpa_cfg_input *req;
+	int rc;
 
 	if (vnic->fw_vnic_id == INVALID_HW_RING_ID)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_TPA_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_TPA_CFG);
+	if (rc)
+		return rc;
 
 	if (tpa_flags) {
 		u16 mss = bp->dev->mtu - 40;
@@ -4896,9 +4917,9 @@ static int bnxt_hwrm_vnic_set_tpa(struct bnxt *bp, u16 vnic_id, u32 tpa_flags)
 		if (tpa_flags & BNXT_FLAG_GRO)
 			flags |= VNIC_TPA_CFG_REQ_FLAGS_GRO;
 
-		req.flags = cpu_to_le32(flags);
+		req->flags = cpu_to_le32(flags);
 
-		req.enables =
+		req->enables =
 			cpu_to_le32(VNIC_TPA_CFG_REQ_ENABLES_MAX_AGG_SEGS |
 				    VNIC_TPA_CFG_REQ_ENABLES_MAX_AGGS |
 				    VNIC_TPA_CFG_REQ_ENABLES_MIN_AGG_LEN);
@@ -4922,14 +4943,14 @@ static int bnxt_hwrm_vnic_set_tpa(struct bnxt *bp, u16 vnic_id, u32 tpa_flags)
 		} else {
 			segs = ilog2(nsegs);
 		}
-		req.max_agg_segs = cpu_to_le16(segs);
-		req.max_aggs = cpu_to_le16(max_aggs);
+		req->max_agg_segs = cpu_to_le16(segs);
+		req->max_aggs = cpu_to_le16(max_aggs);
 
-		req.min_agg_len = cpu_to_le32(512);
+		req->min_agg_len = cpu_to_le32(512);
 	}
-	req.vnic_id = cpu_to_le16(vnic->fw_vnic_id);
+	req->vnic_id = cpu_to_le16(vnic->fw_vnic_id);
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static u16 bnxt_cp_ring_from_grp(struct bnxt *bp, struct bnxt_ring_struct *ring)
@@ -5073,86 +5094,102 @@ static void bnxt_fill_hw_rss_tbl(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 static int bnxt_hwrm_vnic_set_rss(struct bnxt *bp, u16 vnic_id, bool set_rss)
 {
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
-	struct hwrm_vnic_rss_cfg_input req = {0};
+	struct hwrm_vnic_rss_cfg_input *req;
+	int rc;
 
 	if ((bp->flags & BNXT_FLAG_CHIP_P5) ||
 	    vnic->fw_rss_cos_lb_ctx[0] == INVALID_HW_RING_ID)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_RSS_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_RSS_CFG);
+	if (rc)
+		return rc;
+
 	if (set_rss) {
 		bnxt_fill_hw_rss_tbl(bp, vnic);
-		req.hash_type = cpu_to_le32(bp->rss_hash_cfg);
-		req.hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
-		req.ring_grp_tbl_addr = cpu_to_le64(vnic->rss_table_dma_addr);
-		req.hash_key_tbl_addr =
+		req->hash_type = cpu_to_le32(bp->rss_hash_cfg);
+		req->hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
+		req->ring_grp_tbl_addr = cpu_to_le64(vnic->rss_table_dma_addr);
+		req->hash_key_tbl_addr =
 			cpu_to_le64(vnic->rss_hash_key_dma_addr);
 	}
-	req.rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[0]);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[0]);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_vnic_set_rss_p5(struct bnxt *bp, u16 vnic_id, bool set_rss)
 {
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
-	struct hwrm_vnic_rss_cfg_input req = {0};
+	struct hwrm_vnic_rss_cfg_input *req;
 	dma_addr_t ring_tbl_map;
 	u32 i, nr_ctxs;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_RSS_CFG);
+	if (rc)
+		return rc;
+
+	req->vnic_id = cpu_to_le16(vnic->fw_vnic_id);
+	if (!set_rss)
+		return hwrm_req_send(bp, req);
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_RSS_CFG, -1, -1);
-	req.vnic_id = cpu_to_le16(vnic->fw_vnic_id);
-	if (!set_rss) {
-		hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-		return 0;
-	}
 	bnxt_fill_hw_rss_tbl(bp, vnic);
-	req.hash_type = cpu_to_le32(bp->rss_hash_cfg);
-	req.hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
-	req.hash_key_tbl_addr = cpu_to_le64(vnic->rss_hash_key_dma_addr);
+	req->hash_type = cpu_to_le32(bp->rss_hash_cfg);
+	req->hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
+	req->hash_key_tbl_addr = cpu_to_le64(vnic->rss_hash_key_dma_addr);
 	ring_tbl_map = vnic->rss_table_dma_addr;
 	nr_ctxs = bnxt_get_nr_rss_ctxs(bp, bp->rx_nr_rings);
-	for (i = 0; i < nr_ctxs; ring_tbl_map += BNXT_RSS_TABLE_SIZE_P5, i++) {
-		int rc;
 
-		req.ring_grp_tbl_addr = cpu_to_le64(ring_tbl_map);
-		req.ring_table_pair_index = i;
-		req.rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[i]);
-		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	hwrm_req_hold(bp, req);
+	for (i = 0; i < nr_ctxs; ring_tbl_map += BNXT_RSS_TABLE_SIZE_P5, i++) {
+		req->ring_grp_tbl_addr = cpu_to_le64(ring_tbl_map);
+		req->ring_table_pair_index = i;
+		req->rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[i]);
+		rc = hwrm_req_send(bp, req);
 		if (rc)
-			return rc;
+			goto exit;
 	}
-	return 0;
+
+exit:
+	hwrm_req_drop(bp, req);
+	return rc;
 }
 
 static int bnxt_hwrm_vnic_set_hds(struct bnxt *bp, u16 vnic_id)
 {
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
-	struct hwrm_vnic_plcmodes_cfg_input req = {0};
+	struct hwrm_vnic_plcmodes_cfg_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_PLCMODES_CFG, -1, -1);
-	req.flags = cpu_to_le32(VNIC_PLCMODES_CFG_REQ_FLAGS_JUMBO_PLACEMENT |
-				VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV4 |
-				VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV6);
-	req.enables =
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_PLCMODES_CFG);
+	if (rc)
+		return rc;
+
+	req->flags = cpu_to_le32(VNIC_PLCMODES_CFG_REQ_FLAGS_JUMBO_PLACEMENT |
+				 VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV4 |
+				 VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV6);
+	req->enables =
 		cpu_to_le32(VNIC_PLCMODES_CFG_REQ_ENABLES_JUMBO_THRESH_VALID |
 			    VNIC_PLCMODES_CFG_REQ_ENABLES_HDS_THRESHOLD_VALID);
 	/* thresholds not implemented in firmware yet */
-	req.jumbo_thresh = cpu_to_le16(bp->rx_copy_thresh);
-	req.hds_threshold = cpu_to_le16(bp->rx_copy_thresh);
-	req.vnic_id = cpu_to_le32(vnic->fw_vnic_id);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->jumbo_thresh = cpu_to_le16(bp->rx_copy_thresh);
+	req->hds_threshold = cpu_to_le16(bp->rx_copy_thresh);
+	req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+	return hwrm_req_send(bp, req);
 }
 
 static void bnxt_hwrm_vnic_ctx_free_one(struct bnxt *bp, u16 vnic_id,
 					u16 ctx_idx)
 {
-	struct hwrm_vnic_rss_cos_lb_ctx_free_input req = {0};
+	struct hwrm_vnic_rss_cos_lb_ctx_free_input *req;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_RSS_COS_LB_CTX_FREE, -1, -1);
-	req.rss_cos_lb_ctx_id =
+	if (hwrm_req_init(bp, req, HWRM_VNIC_RSS_COS_LB_CTX_FREE))
+		return;
+
+	req->rss_cos_lb_ctx_id =
 		cpu_to_le16(bp->vnic_info[vnic_id].fw_rss_cos_lb_ctx[ctx_idx]);
 
-	hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	hwrm_req_send(bp, req);
 	bp->vnic_info[vnic_id].fw_rss_cos_lb_ctx[ctx_idx] = INVALID_HW_RING_ID;
 }
 
@@ -5173,20 +5210,20 @@ static void bnxt_hwrm_vnic_ctx_free(struct bnxt *bp)
 
 static int bnxt_hwrm_vnic_ctx_alloc(struct bnxt *bp, u16 vnic_id, u16 ctx_idx)
 {
+	struct hwrm_vnic_rss_cos_lb_ctx_alloc_output *resp;
+	struct hwrm_vnic_rss_cos_lb_ctx_alloc_input *req;
 	int rc;
-	struct hwrm_vnic_rss_cos_lb_ctx_alloc_input req = {0};
-	struct hwrm_vnic_rss_cos_lb_ctx_alloc_output *resp =
-						bp->hwrm_cmd_resp_addr;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_RSS_COS_LB_CTX_ALLOC, -1,
-			       -1);
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_RSS_COS_LB_CTX_ALLOC);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		bp->vnic_info[vnic_id].fw_rss_cos_lb_ctx[ctx_idx] =
 			le16_to_cpu(resp->rss_cos_lb_ctx_id);
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 
 	return rc;
 }
@@ -5200,47 +5237,50 @@ static u32 bnxt_get_roce_vnic_mode(struct bnxt *bp)
 
 int bnxt_hwrm_vnic_cfg(struct bnxt *bp, u16 vnic_id)
 {
-	unsigned int ring = 0, grp_idx;
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
-	struct hwrm_vnic_cfg_input req = {0};
+	struct hwrm_vnic_cfg_input *req;
+	unsigned int ring = 0, grp_idx;
 	u16 def_vlan = 0;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_CFG);
+	if (rc)
+		return rc;
 
 	if (bp->flags & BNXT_FLAG_CHIP_P5) {
 		struct bnxt_rx_ring_info *rxr = &bp->rx_ring[0];
 
-		req.default_rx_ring_id =
+		req->default_rx_ring_id =
 			cpu_to_le16(rxr->rx_ring_struct.fw_ring_id);
-		req.default_cmpl_ring_id =
+		req->default_cmpl_ring_id =
 			cpu_to_le16(bnxt_cp_ring_for_rx(bp, rxr));
-		req.enables =
+		req->enables =
 			cpu_to_le32(VNIC_CFG_REQ_ENABLES_DEFAULT_RX_RING_ID |
 				    VNIC_CFG_REQ_ENABLES_DEFAULT_CMPL_RING_ID);
 		goto vnic_mru;
 	}
-	req.enables = cpu_to_le32(VNIC_CFG_REQ_ENABLES_DFLT_RING_GRP);
+	req->enables = cpu_to_le32(VNIC_CFG_REQ_ENABLES_DFLT_RING_GRP);
 	/* Only RSS support for now TBD: COS & LB */
 	if (vnic->fw_rss_cos_lb_ctx[0] != INVALID_HW_RING_ID) {
-		req.rss_rule = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[0]);
-		req.enables |= cpu_to_le32(VNIC_CFG_REQ_ENABLES_RSS_RULE |
+		req->rss_rule = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[0]);
+		req->enables |= cpu_to_le32(VNIC_CFG_REQ_ENABLES_RSS_RULE |
 					   VNIC_CFG_REQ_ENABLES_MRU);
 	} else if (vnic->flags & BNXT_VNIC_RFS_NEW_RSS_FLAG) {
-		req.rss_rule =
+		req->rss_rule =
 			cpu_to_le16(bp->vnic_info[0].fw_rss_cos_lb_ctx[0]);
-		req.enables |= cpu_to_le32(VNIC_CFG_REQ_ENABLES_RSS_RULE |
+		req->enables |= cpu_to_le32(VNIC_CFG_REQ_ENABLES_RSS_RULE |
 					   VNIC_CFG_REQ_ENABLES_MRU);
-		req.flags |= cpu_to_le32(VNIC_CFG_REQ_FLAGS_RSS_DFLT_CR_MODE);
+		req->flags |= cpu_to_le32(VNIC_CFG_REQ_FLAGS_RSS_DFLT_CR_MODE);
 	} else {
-		req.rss_rule = cpu_to_le16(0xffff);
+		req->rss_rule = cpu_to_le16(0xffff);
 	}
 
 	if (BNXT_CHIP_TYPE_NITRO_A0(bp) &&
 	    (vnic->fw_rss_cos_lb_ctx[0] != INVALID_HW_RING_ID)) {
-		req.cos_rule = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[1]);
-		req.enables |= cpu_to_le32(VNIC_CFG_REQ_ENABLES_COS_RULE);
+		req->cos_rule = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[1]);
+		req->enables |= cpu_to_le32(VNIC_CFG_REQ_ENABLES_COS_RULE);
 	} else {
-		req.cos_rule = cpu_to_le16(0xffff);
+		req->cos_rule = cpu_to_le16(0xffff);
 	}
 
 	if (vnic->flags & BNXT_VNIC_RSS_FLAG)
@@ -5251,34 +5291,36 @@ int bnxt_hwrm_vnic_cfg(struct bnxt *bp, u16 vnic_id)
 		ring = bp->rx_nr_rings - 1;
 
 	grp_idx = bp->rx_ring[ring].bnapi->index;
-	req.dflt_ring_grp = cpu_to_le16(bp->grp_info[grp_idx].fw_grp_id);
-	req.lb_rule = cpu_to_le16(0xffff);
+	req->dflt_ring_grp = cpu_to_le16(bp->grp_info[grp_idx].fw_grp_id);
+	req->lb_rule = cpu_to_le16(0xffff);
 vnic_mru:
-	req.mru = cpu_to_le16(bp->dev->mtu + ETH_HLEN + VLAN_HLEN);
+	req->mru = cpu_to_le16(bp->dev->mtu + ETH_HLEN + VLAN_HLEN);
 
-	req.vnic_id = cpu_to_le16(vnic->fw_vnic_id);
+	req->vnic_id = cpu_to_le16(vnic->fw_vnic_id);
 #ifdef CONFIG_BNXT_SRIOV
 	if (BNXT_VF(bp))
 		def_vlan = bp->vf.vlan;
 #endif
 	if ((bp->flags & BNXT_FLAG_STRIP_VLAN) || def_vlan)
-		req.flags |= cpu_to_le32(VNIC_CFG_REQ_FLAGS_VLAN_STRIP_MODE);
+		req->flags |= cpu_to_le32(VNIC_CFG_REQ_FLAGS_VLAN_STRIP_MODE);
 	if (!vnic_id && bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP))
-		req.flags |= cpu_to_le32(bnxt_get_roce_vnic_mode(bp));
+		req->flags |= cpu_to_le32(bnxt_get_roce_vnic_mode(bp));
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static void bnxt_hwrm_vnic_free_one(struct bnxt *bp, u16 vnic_id)
 {
 	if (bp->vnic_info[vnic_id].fw_vnic_id != INVALID_HW_RING_ID) {
-		struct hwrm_vnic_free_input req = {0};
+		struct hwrm_vnic_free_input *req;
+
+		if (hwrm_req_init(bp, req, HWRM_VNIC_FREE))
+			return;
 
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_FREE, -1, -1);
-		req.vnic_id =
+		req->vnic_id =
 			cpu_to_le32(bp->vnic_info[vnic_id].fw_vnic_id);
 
-		hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		hwrm_req_send(bp, req);
 		bp->vnic_info[vnic_id].fw_vnic_id = INVALID_HW_RING_ID;
 	}
 }
@@ -5295,11 +5337,15 @@ static int bnxt_hwrm_vnic_alloc(struct bnxt *bp, u16 vnic_id,
 				unsigned int start_rx_ring_idx,
 				unsigned int nr_rings)
 {
-	int rc = 0;
 	unsigned int i, j, grp_idx, end_idx = start_rx_ring_idx + nr_rings;
-	struct hwrm_vnic_alloc_input req = {0};
-	struct hwrm_vnic_alloc_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
+	struct hwrm_vnic_alloc_output *resp;
+	struct hwrm_vnic_alloc_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_ALLOC);
+	if (rc)
+		return rc;
 
 	if (bp->flags & BNXT_FLAG_CHIP_P5)
 		goto vnic_no_ring_grps;
@@ -5319,22 +5365,20 @@ static int bnxt_hwrm_vnic_alloc(struct bnxt *bp, u16 vnic_id,
 	for (i = 0; i < BNXT_MAX_CTX_PER_VNIC; i++)
 		vnic->fw_rss_cos_lb_ctx[i] = INVALID_HW_RING_ID;
 	if (vnic_id == 0)
-		req.flags = cpu_to_le32(VNIC_ALLOC_REQ_FLAGS_DEFAULT);
-
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_ALLOC, -1, -1);
+		req->flags = cpu_to_le32(VNIC_ALLOC_REQ_FLAGS_DEFAULT);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		vnic->fw_vnic_id = le32_to_cpu(resp->vnic_id);
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 {
-	struct hwrm_vnic_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_vnic_qcaps_input req = {0};
+	struct hwrm_vnic_qcaps_output *resp;
+	struct hwrm_vnic_qcaps_input *req;
 	int rc;
 
 	bp->hw_ring_stats_size = sizeof(struct ctx_hw_stats);
@@ -5342,9 +5386,12 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 	if (bp->hwrm_spec_code < 0x10600)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_QCAPS, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_QCAPS);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		u32 flags = le32_to_cpu(resp->flags);
 
@@ -5370,92 +5417,96 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 				bp->hw_ring_stats_size = BNXT_RING_STATS_SIZE_P5_SR2;
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_ring_grp_alloc(struct bnxt *bp)
 {
+	struct hwrm_ring_grp_alloc_output *resp;
+	struct hwrm_ring_grp_alloc_input *req;
+	int rc;
 	u16 i;
-	u32 rc = 0;
 
 	if (bp->flags & BNXT_FLAG_CHIP_P5)
 		return 0;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = hwrm_req_init(bp, req, HWRM_RING_GRP_ALLOC);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
 	for (i = 0; i < bp->rx_nr_rings; i++) {
-		struct hwrm_ring_grp_alloc_input req = {0};
-		struct hwrm_ring_grp_alloc_output *resp =
-					bp->hwrm_cmd_resp_addr;
 		unsigned int grp_idx = bp->rx_ring[i].bnapi->index;
 
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_GRP_ALLOC, -1, -1);
+		req->cr = cpu_to_le16(bp->grp_info[grp_idx].cp_fw_ring_id);
+		req->rr = cpu_to_le16(bp->grp_info[grp_idx].rx_fw_ring_id);
+		req->ar = cpu_to_le16(bp->grp_info[grp_idx].agg_fw_ring_id);
+		req->sc = cpu_to_le16(bp->grp_info[grp_idx].fw_stats_ctx);
 
-		req.cr = cpu_to_le16(bp->grp_info[grp_idx].cp_fw_ring_id);
-		req.rr = cpu_to_le16(bp->grp_info[grp_idx].rx_fw_ring_id);
-		req.ar = cpu_to_le16(bp->grp_info[grp_idx].agg_fw_ring_id);
-		req.sc = cpu_to_le16(bp->grp_info[grp_idx].fw_stats_ctx);
+		rc = hwrm_req_send(bp, req);
 
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
 		if (rc)
 			break;
 
 		bp->grp_info[grp_idx].fw_grp_id =
 			le32_to_cpu(resp->ring_group_id);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static void bnxt_hwrm_ring_grp_free(struct bnxt *bp)
 {
+	struct hwrm_ring_grp_free_input *req;
 	u16 i;
-	struct hwrm_ring_grp_free_input req = {0};
 
 	if (!bp->grp_info || (bp->flags & BNXT_FLAG_CHIP_P5))
 		return;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_GRP_FREE, -1, -1);
+	if (hwrm_req_init(bp, req, HWRM_RING_GRP_FREE))
+		return;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	hwrm_req_hold(bp, req);
 	for (i = 0; i < bp->cp_nr_rings; i++) {
 		if (bp->grp_info[i].fw_grp_id == INVALID_HW_RING_ID)
 			continue;
-		req.ring_group_id =
+		req->ring_group_id =
 			cpu_to_le32(bp->grp_info[i].fw_grp_id);
 
-		_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		hwrm_req_send(bp, req);
 		bp->grp_info[i].fw_grp_id = INVALID_HW_RING_ID;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 }
 
 static int hwrm_ring_alloc_send_msg(struct bnxt *bp,
 				    struct bnxt_ring_struct *ring,
 				    u32 ring_type, u32 map_index)
 {
-	int rc = 0, err = 0;
-	struct hwrm_ring_alloc_input req = {0};
-	struct hwrm_ring_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_ring_alloc_output *resp;
+	struct hwrm_ring_alloc_input *req;
 	struct bnxt_ring_mem_info *rmem = &ring->ring_mem;
 	struct bnxt_ring_grp_info *grp_info;
+	int rc, err = 0;
 	u16 ring_id;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_ALLOC, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_RING_ALLOC);
+	if (rc)
+		goto exit;
 
-	req.enables = 0;
+	req->enables = 0;
 	if (rmem->nr_pages > 1) {
-		req.page_tbl_addr = cpu_to_le64(rmem->pg_tbl_map);
+		req->page_tbl_addr = cpu_to_le64(rmem->pg_tbl_map);
 		/* Page size is in log2 units */
-		req.page_size = BNXT_PAGE_SHIFT;
-		req.page_tbl_depth = 1;
+		req->page_size = BNXT_PAGE_SHIFT;
+		req->page_tbl_depth = 1;
 	} else {
-		req.page_tbl_addr =  cpu_to_le64(rmem->dma_arr[0]);
+		req->page_tbl_addr =  cpu_to_le64(rmem->dma_arr[0]);
 	}
-	req.fbo = 0;
+	req->fbo = 0;
 	/* Association of ring index with doorbell index and MSIX number */
-	req.logical_id = cpu_to_le16(map_index);
+	req->logical_id = cpu_to_le16(map_index);
 
 	switch (ring_type) {
 	case HWRM_RING_ALLOC_TX: {
@@ -5463,67 +5514,67 @@ static int hwrm_ring_alloc_send_msg(struct bnxt *bp,
 
 		txr = container_of(ring, struct bnxt_tx_ring_info,
 				   tx_ring_struct);
-		req.ring_type = RING_ALLOC_REQ_RING_TYPE_TX;
+		req->ring_type = RING_ALLOC_REQ_RING_TYPE_TX;
 		/* Association of transmit ring with completion ring */
 		grp_info = &bp->grp_info[ring->grp_idx];
-		req.cmpl_ring_id = cpu_to_le16(bnxt_cp_ring_for_tx(bp, txr));
-		req.length = cpu_to_le32(bp->tx_ring_mask + 1);
-		req.stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
-		req.queue_id = cpu_to_le16(ring->queue_id);
+		req->cmpl_ring_id = cpu_to_le16(bnxt_cp_ring_for_tx(bp, txr));
+		req->length = cpu_to_le32(bp->tx_ring_mask + 1);
+		req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+		req->queue_id = cpu_to_le16(ring->queue_id);
 		break;
 	}
 	case HWRM_RING_ALLOC_RX:
-		req.ring_type = RING_ALLOC_REQ_RING_TYPE_RX;
-		req.length = cpu_to_le32(bp->rx_ring_mask + 1);
+		req->ring_type = RING_ALLOC_REQ_RING_TYPE_RX;
+		req->length = cpu_to_le32(bp->rx_ring_mask + 1);
 		if (bp->flags & BNXT_FLAG_CHIP_P5) {
 			u16 flags = 0;
 
 			/* Association of rx ring with stats context */
 			grp_info = &bp->grp_info[ring->grp_idx];
-			req.rx_buf_size = cpu_to_le16(bp->rx_buf_use_size);
-			req.stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
-			req.enables |= cpu_to_le32(
+			req->rx_buf_size = cpu_to_le16(bp->rx_buf_use_size);
+			req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+			req->enables |= cpu_to_le32(
 				RING_ALLOC_REQ_ENABLES_RX_BUF_SIZE_VALID);
 			if (NET_IP_ALIGN == 2)
 				flags = RING_ALLOC_REQ_FLAGS_RX_SOP_PAD;
-			req.flags = cpu_to_le16(flags);
+			req->flags = cpu_to_le16(flags);
 		}
 		break;
 	case HWRM_RING_ALLOC_AGG:
 		if (bp->flags & BNXT_FLAG_CHIP_P5) {
-			req.ring_type = RING_ALLOC_REQ_RING_TYPE_RX_AGG;
+			req->ring_type = RING_ALLOC_REQ_RING_TYPE_RX_AGG;
 			/* Association of agg ring with rx ring */
 			grp_info = &bp->grp_info[ring->grp_idx];
-			req.rx_ring_id = cpu_to_le16(grp_info->rx_fw_ring_id);
-			req.rx_buf_size = cpu_to_le16(BNXT_RX_PAGE_SIZE);
-			req.stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
-			req.enables |= cpu_to_le32(
+			req->rx_ring_id = cpu_to_le16(grp_info->rx_fw_ring_id);
+			req->rx_buf_size = cpu_to_le16(BNXT_RX_PAGE_SIZE);
+			req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+			req->enables |= cpu_to_le32(
 				RING_ALLOC_REQ_ENABLES_RX_RING_ID_VALID |
 				RING_ALLOC_REQ_ENABLES_RX_BUF_SIZE_VALID);
 		} else {
-			req.ring_type = RING_ALLOC_REQ_RING_TYPE_RX;
+			req->ring_type = RING_ALLOC_REQ_RING_TYPE_RX;
 		}
-		req.length = cpu_to_le32(bp->rx_agg_ring_mask + 1);
+		req->length = cpu_to_le32(bp->rx_agg_ring_mask + 1);
 		break;
 	case HWRM_RING_ALLOC_CMPL:
-		req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
-		req.length = cpu_to_le32(bp->cp_ring_mask + 1);
+		req->ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
+		req->length = cpu_to_le32(bp->cp_ring_mask + 1);
 		if (bp->flags & BNXT_FLAG_CHIP_P5) {
 			/* Association of cp ring with nq */
 			grp_info = &bp->grp_info[map_index];
-			req.nq_ring_id = cpu_to_le16(grp_info->cp_fw_ring_id);
-			req.cq_handle = cpu_to_le64(ring->handle);
-			req.enables |= cpu_to_le32(
+			req->nq_ring_id = cpu_to_le16(grp_info->cp_fw_ring_id);
+			req->cq_handle = cpu_to_le64(ring->handle);
+			req->enables |= cpu_to_le32(
 				RING_ALLOC_REQ_ENABLES_NQ_RING_ID_VALID);
 		} else if (bp->flags & BNXT_FLAG_USING_MSIX) {
-			req.int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
+			req->int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
 		}
 		break;
 	case HWRM_RING_ALLOC_NQ:
-		req.ring_type = RING_ALLOC_REQ_RING_TYPE_NQ;
-		req.length = cpu_to_le32(bp->cp_ring_mask + 1);
+		req->ring_type = RING_ALLOC_REQ_RING_TYPE_NQ;
+		req->length = cpu_to_le32(bp->cp_ring_mask + 1);
 		if (bp->flags & BNXT_FLAG_USING_MSIX)
-			req.int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
+			req->int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
 		break;
 	default:
 		netdev_err(bp->dev, "hwrm alloc invalid ring type %d\n",
@@ -5531,12 +5582,13 @@ static int hwrm_ring_alloc_send_msg(struct bnxt *bp,
 		return -1;
 	}
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	err = le16_to_cpu(resp->error_code);
 	ring_id = le16_to_cpu(resp->ring_id);
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 
+exit:
 	if (rc || err) {
 		netdev_err(bp->dev, "hwrm_ring_alloc type %d failed. rc:%x err:%x\n",
 			   ring_type, rc, err);
@@ -5551,23 +5603,28 @@ static int bnxt_hwrm_set_async_event_cr(struct bnxt *bp, int idx)
 	int rc;
 
 	if (BNXT_PF(bp)) {
-		struct hwrm_func_cfg_input req = {0};
+		struct hwrm_func_cfg_input *req;
 
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-		req.fid = cpu_to_le16(0xffff);
-		req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ASYNC_EVENT_CR);
-		req.async_event_cr = cpu_to_le16(idx);
-		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+		if (rc)
+			return rc;
+
+		req->fid = cpu_to_le16(0xffff);
+		req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ASYNC_EVENT_CR);
+		req->async_event_cr = cpu_to_le16(idx);
+		return hwrm_req_send(bp, req);
 	} else {
-		struct hwrm_func_vf_cfg_input req = {0};
+		struct hwrm_func_vf_cfg_input *req;
+
+		rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
+		if (rc)
+			return rc;
 
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
-		req.enables =
+		req->enables =
 			cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_ASYNC_EVENT_CR);
-		req.async_event_cr = cpu_to_le16(idx);
-		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		req->async_event_cr = cpu_to_le16(idx);
+		return hwrm_req_send(bp, req);
 	}
-	return rc;
 }
 
 static void bnxt_set_db(struct bnxt *bp, struct bnxt_db_info *db, u32 ring_type,
@@ -5738,23 +5795,27 @@ static int hwrm_ring_free_send_msg(struct bnxt *bp,
 				   struct bnxt_ring_struct *ring,
 				   u32 ring_type, int cmpl_ring_id)
 {
+	struct hwrm_ring_free_output *resp;
+	struct hwrm_ring_free_input *req;
+	u16 error_code = 0;
 	int rc;
-	struct hwrm_ring_free_input req = {0};
-	struct hwrm_ring_free_output *resp = bp->hwrm_cmd_resp_addr;
-	u16 error_code;
 
 	if (BNXT_NO_FW_ACCESS(bp))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_FREE, cmpl_ring_id, -1);
-	req.ring_type = ring_type;
-	req.ring_id = cpu_to_le16(ring->fw_ring_id);
+	rc = hwrm_req_init(bp, req, HWRM_RING_FREE);
+	if (rc)
+		goto exit;
+
+	req->cmpl_ring = cpu_to_le16(cmpl_ring_id);
+	req->ring_type = ring_type;
+	req->ring_id = cpu_to_le16(ring->fw_ring_id);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	error_code = le16_to_cpu(resp->error_code);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-
+	hwrm_req_drop(bp, req);
+exit:
 	if (rc || error_code) {
 		netdev_err(bp->dev, "hwrm_ring_free type %d failed. rc:%x err:%x\n",
 			   ring_type, rc, error_code);
@@ -5869,20 +5930,23 @@ static int bnxt_trim_rings(struct bnxt *bp, int *rx, int *tx, int max,
 
 static int bnxt_hwrm_get_rings(struct bnxt *bp)
 {
-	struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
-	struct hwrm_func_qcfg_input req = {0};
+	struct hwrm_func_qcfg_output *resp;
+	struct hwrm_func_qcfg_input *req;
 	int rc;
 
 	if (bp->hwrm_spec_code < 0x10601)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
+	if (rc)
+		return rc;
+
+	req->fid = cpu_to_le16(0xffff);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
+		hwrm_req_drop(bp, req);
 		return rc;
 	}
 
@@ -5916,39 +5980,45 @@ static int bnxt_hwrm_get_rings(struct bnxt *bp)
 		hw_resc->resv_cp_rings = cp;
 		hw_resc->resv_stat_ctxs = stats;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return 0;
 }
 
-/* Caller must hold bp->hwrm_cmd_lock */
 int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings)
 {
-	struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_qcfg_input req = {0};
+	struct hwrm_func_qcfg_output *resp;
+	struct hwrm_func_qcfg_input *req;
 	int rc;
 
 	if (bp->hwrm_spec_code < 0x10601)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
-	req.fid = cpu_to_le16(fid);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
+	if (rc)
+		return rc;
+
+	req->fid = cpu_to_le16(fid);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		*tx_rings = le16_to_cpu(resp->alloc_tx_rings);
 
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static bool bnxt_rfs_supported(struct bnxt *bp);
 
-static void
-__bnxt_hwrm_reserve_pf_rings(struct bnxt *bp, struct hwrm_func_cfg_input *req,
-			     int tx_rings, int rx_rings, int ring_grps,
-			     int cp_rings, int stats, int vnics)
+static struct hwrm_func_cfg_input *
+__bnxt_hwrm_reserve_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
+			     int ring_grps, int cp_rings, int stats, int vnics)
 {
+	struct hwrm_func_cfg_input *req;
 	u32 enables = 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, req, HWRM_FUNC_CFG, -1, -1);
+	if (hwrm_req_init(bp, req, HWRM_FUNC_CFG))
+		return NULL;
+
 	req->fid = cpu_to_le16(0xffff);
 	enables |= tx_rings ? FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS : 0;
 	req->num_tx_rings = cpu_to_le16(tx_rings);
@@ -5989,17 +6059,19 @@ __bnxt_hwrm_reserve_pf_rings(struct bnxt *bp, struct hwrm_func_cfg_input *req,
 		req->num_vnics = cpu_to_le16(vnics);
 	}
 	req->enables = cpu_to_le32(enables);
+	return req;
 }
 
-static void
-__bnxt_hwrm_reserve_vf_rings(struct bnxt *bp,
-			     struct hwrm_func_vf_cfg_input *req, int tx_rings,
-			     int rx_rings, int ring_grps, int cp_rings,
-			     int stats, int vnics)
+static struct hwrm_func_vf_cfg_input *
+__bnxt_hwrm_reserve_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
+			     int ring_grps, int cp_rings, int stats, int vnics)
 {
+	struct hwrm_func_vf_cfg_input *req;
 	u32 enables = 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, req, HWRM_FUNC_VF_CFG, -1, -1);
+	if (hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG))
+		return NULL;
+
 	enables |= tx_rings ? FUNC_VF_CFG_REQ_ENABLES_NUM_TX_RINGS : 0;
 	enables |= rx_rings ? FUNC_VF_CFG_REQ_ENABLES_NUM_RX_RINGS |
 			      FUNC_VF_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS : 0;
@@ -6031,21 +6103,27 @@ __bnxt_hwrm_reserve_vf_rings(struct bnxt *bp,
 	req->num_vnics = cpu_to_le16(vnics);
 
 	req->enables = cpu_to_le32(enables);
+	return req;
 }
 
 static int
 bnxt_hwrm_reserve_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 			   int ring_grps, int cp_rings, int stats, int vnics)
 {
-	struct hwrm_func_cfg_input req = {0};
+	struct hwrm_func_cfg_input *req;
 	int rc;
 
-	__bnxt_hwrm_reserve_pf_rings(bp, &req, tx_rings, rx_rings, ring_grps,
-				     cp_rings, stats, vnics);
-	if (!req.enables)
+	req = __bnxt_hwrm_reserve_pf_rings(bp, tx_rings, rx_rings, ring_grps,
+					   cp_rings, stats, vnics);
+	if (!req)
+		return -ENOMEM;
+
+	if (!req->enables) {
+		hwrm_req_drop(bp, req);
 		return 0;
+	}
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		return rc;
 
@@ -6059,7 +6137,7 @@ static int
 bnxt_hwrm_reserve_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 			   int ring_grps, int cp_rings, int stats, int vnics)
 {
-	struct hwrm_func_vf_cfg_input req = {0};
+	struct hwrm_func_vf_cfg_input *req;
 	int rc;
 
 	if (!BNXT_NEW_RM(bp)) {
@@ -6067,9 +6145,12 @@ bnxt_hwrm_reserve_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 		return 0;
 	}
 
-	__bnxt_hwrm_reserve_vf_rings(bp, &req, tx_rings, rx_rings, ring_grps,
-				     cp_rings, stats, vnics);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req = __bnxt_hwrm_reserve_vf_rings(bp, tx_rings, rx_rings, ring_grps,
+					   cp_rings, stats, vnics);
+	if (!req)
+		return -ENOMEM;
+
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		return rc;
 
@@ -6270,14 +6351,14 @@ static int bnxt_hwrm_check_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 				    int ring_grps, int cp_rings, int stats,
 				    int vnics)
 {
-	struct hwrm_func_vf_cfg_input req = {0};
+	struct hwrm_func_vf_cfg_input *req;
 	u32 flags;
 
 	if (!BNXT_NEW_RM(bp))
 		return 0;
 
-	__bnxt_hwrm_reserve_vf_rings(bp, &req, tx_rings, rx_rings, ring_grps,
-				     cp_rings, stats, vnics);
+	req = __bnxt_hwrm_reserve_vf_rings(bp, tx_rings, rx_rings, ring_grps,
+					   cp_rings, stats, vnics);
 	flags = FUNC_VF_CFG_REQ_FLAGS_TX_ASSETS_TEST |
 		FUNC_VF_CFG_REQ_FLAGS_RX_ASSETS_TEST |
 		FUNC_VF_CFG_REQ_FLAGS_CMPL_ASSETS_TEST |
@@ -6287,20 +6368,19 @@ static int bnxt_hwrm_check_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 	if (!(bp->flags & BNXT_FLAG_CHIP_P5))
 		flags |= FUNC_VF_CFG_REQ_FLAGS_RING_GRP_ASSETS_TEST;
 
-	req.flags = cpu_to_le32(flags);
-	return hwrm_send_message_silent(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+	req->flags = cpu_to_le32(flags);
+	return hwrm_req_send_silent(bp, req);
 }
 
 static int bnxt_hwrm_check_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 				    int ring_grps, int cp_rings, int stats,
 				    int vnics)
 {
-	struct hwrm_func_cfg_input req = {0};
+	struct hwrm_func_cfg_input *req;
 	u32 flags;
 
-	__bnxt_hwrm_reserve_pf_rings(bp, &req, tx_rings, rx_rings, ring_grps,
-				     cp_rings, stats, vnics);
+	req = __bnxt_hwrm_reserve_pf_rings(bp, tx_rings, rx_rings, ring_grps,
+					   cp_rings, stats, vnics);
 	flags = FUNC_CFG_REQ_FLAGS_TX_ASSETS_TEST;
 	if (BNXT_NEW_RM(bp)) {
 		flags |= FUNC_CFG_REQ_FLAGS_RX_ASSETS_TEST |
@@ -6314,9 +6394,8 @@ static int bnxt_hwrm_check_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 			flags |= FUNC_CFG_REQ_FLAGS_RING_GRP_ASSETS_TEST;
 	}
 
-	req.flags = cpu_to_le32(flags);
-	return hwrm_send_message_silent(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+	req->flags = cpu_to_le32(flags);
+	return hwrm_req_send_silent(bp, req);
 }
 
 static int bnxt_hwrm_check_rings(struct bnxt *bp, int tx_rings, int rx_rings,
@@ -6337,9 +6416,9 @@ static int bnxt_hwrm_check_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 
 static void bnxt_hwrm_coal_params_qcaps(struct bnxt *bp)
 {
-	struct hwrm_ring_aggint_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_coal_cap *coal_cap = &bp->coal_cap;
-	struct hwrm_ring_aggint_qcaps_input req = {0};
+	struct hwrm_ring_aggint_qcaps_output *resp;
+	struct hwrm_ring_aggint_qcaps_input *req;
 	int rc;
 
 	coal_cap->cmpl_params = BNXT_LEGACY_COAL_CMPL_PARAMS;
@@ -6355,9 +6434,11 @@ static void bnxt_hwrm_coal_params_qcaps(struct bnxt *bp)
 	if (bp->hwrm_spec_code < 0x10902)
 		return;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_AGGINT_QCAPS, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (hwrm_req_init(bp, req, HWRM_RING_AGGINT_QCAPS))
+		return;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
 	if (!rc) {
 		coal_cap->cmpl_params = le32_to_cpu(resp->cmpl_params);
 		coal_cap->nq_params = le32_to_cpu(resp->nq_params);
@@ -6377,7 +6458,7 @@ static void bnxt_hwrm_coal_params_qcaps(struct bnxt *bp)
 			le16_to_cpu(resp->num_cmpl_aggr_int_max);
 		coal_cap->timer_units = le16_to_cpu(resp->timer_units);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 }
 
 static u16 bnxt_usec_to_coal_tmr(struct bnxt *bp, u16 usec)
@@ -6445,37 +6526,40 @@ static void bnxt_hwrm_set_coal_params(struct bnxt *bp,
 	req->enables |= cpu_to_le16(BNXT_COAL_CMPL_ENABLES);
 }
 
-/* Caller holds bp->hwrm_cmd_lock */
 static int __bnxt_hwrm_set_coal_nq(struct bnxt *bp, struct bnxt_napi *bnapi,
 				   struct bnxt_coal *hw_coal)
 {
-	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input req = {0};
+	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input *req;
 	struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
 	struct bnxt_coal_cap *coal_cap = &bp->coal_cap;
 	u32 nq_params = coal_cap->nq_params;
 	u16 tmr;
+	int rc;
 
 	if (!(nq_params & RING_AGGINT_QCAPS_RESP_NQ_PARAMS_INT_LAT_TMR_MIN))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS,
-			       -1, -1);
-	req.ring_id = cpu_to_le16(cpr->cp_ring_struct.fw_ring_id);
-	req.flags =
+	rc = hwrm_req_init(bp, req, HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS);
+	if (rc)
+		return rc;
+
+	req->ring_id = cpu_to_le16(cpr->cp_ring_struct.fw_ring_id);
+	req->flags =
 		cpu_to_le16(RING_CMPL_RING_CFG_AGGINT_PARAMS_REQ_FLAGS_IS_NQ);
 
 	tmr = bnxt_usec_to_coal_tmr(bp, hw_coal->coal_ticks) / 2;
 	tmr = clamp_t(u16, tmr, 1, coal_cap->int_lat_tmr_min_max);
-	req.int_lat_tmr_min = cpu_to_le16(tmr);
-	req.enables |= cpu_to_le16(BNXT_COAL_CMPL_MIN_TMR_ENABLE);
-	return _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->int_lat_tmr_min = cpu_to_le16(tmr);
+	req->enables |= cpu_to_le16(BNXT_COAL_CMPL_MIN_TMR_ENABLE);
+	return hwrm_req_send(bp, req);
 }
 
 int bnxt_hwrm_set_ring_coal(struct bnxt *bp, struct bnxt_napi *bnapi)
 {
-	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input req_rx = {0};
+	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input *req_rx;
 	struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
 	struct bnxt_coal coal;
+	int rc;
 
 	/* Tick values in micro seconds.
 	 * 1 coal_buf x bufs_per_record = 1 completion record.
@@ -6488,48 +6572,53 @@ int bnxt_hwrm_set_ring_coal(struct bnxt *bp, struct bnxt_napi *bnapi)
 	if (!bnapi->rx_ring)
 		return -ENODEV;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req_rx,
-			       HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS, -1, -1);
+	rc = hwrm_req_init(bp, req_rx, HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_set_coal_params(bp, &coal, &req_rx);
+	bnxt_hwrm_set_coal_params(bp, &coal, req_rx);
 
-	req_rx.ring_id = cpu_to_le16(bnxt_cp_ring_for_rx(bp, bnapi->rx_ring));
+	req_rx->ring_id = cpu_to_le16(bnxt_cp_ring_for_rx(bp, bnapi->rx_ring));
 
-	return hwrm_send_message(bp, &req_rx, sizeof(req_rx),
-				 HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req_rx);
 }
 
 int bnxt_hwrm_set_coal(struct bnxt *bp)
 {
-	int i, rc = 0;
-	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input req_rx = {0},
-							   req_tx = {0}, *req;
+	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input *req_rx, *req_tx,
+							   *req;
+	int i, rc;
+
+	rc = hwrm_req_init(bp, req_rx, HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req_rx,
-			       HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS, -1, -1);
-	bnxt_hwrm_cmd_hdr_init(bp, &req_tx,
-			       HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS, -1, -1);
+	rc = hwrm_req_init(bp, req_tx, HWRM_RING_CMPL_RING_CFG_AGGINT_PARAMS);
+	if (rc) {
+		hwrm_req_drop(bp, req_rx);
+		return rc;
+	}
 
-	bnxt_hwrm_set_coal_params(bp, &bp->rx_coal, &req_rx);
-	bnxt_hwrm_set_coal_params(bp, &bp->tx_coal, &req_tx);
+	bnxt_hwrm_set_coal_params(bp, &bp->rx_coal, req_rx);
+	bnxt_hwrm_set_coal_params(bp, &bp->tx_coal, req_tx);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	hwrm_req_hold(bp, req_rx);
+	hwrm_req_hold(bp, req_tx);
 	for (i = 0; i < bp->cp_nr_rings; i++) {
 		struct bnxt_napi *bnapi = bp->bnapi[i];
 		struct bnxt_coal *hw_coal;
 		u16 ring_id;
 
-		req = &req_rx;
+		req = req_rx;
 		if (!bnapi->rx_ring) {
 			ring_id = bnxt_cp_ring_for_tx(bp, bnapi->tx_ring);
-			req = &req_tx;
+			req = req_tx;
 		} else {
 			ring_id = bnxt_cp_ring_for_rx(bp, bnapi->rx_ring);
 		}
 		req->ring_id = cpu_to_le16(ring_id);
 
-		rc = _hwrm_send_message(bp, req, sizeof(*req),
-					HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
 		if (rc)
 			break;
 
@@ -6537,11 +6626,10 @@ int bnxt_hwrm_set_coal(struct bnxt *bp)
 			continue;
 
 		if (bnapi->rx_ring && bnapi->tx_ring) {
-			req = &req_tx;
+			req = req_tx;
 			ring_id = bnxt_cp_ring_for_tx(bp, bnapi->tx_ring);
 			req->ring_id = cpu_to_le16(ring_id);
-			rc = _hwrm_send_message(bp, req, sizeof(*req),
-						HWRM_CMD_TIMEOUT);
+			rc = hwrm_req_send(bp, req);
 			if (rc)
 				break;
 		}
@@ -6551,14 +6639,15 @@ int bnxt_hwrm_set_coal(struct bnxt *bp)
 			hw_coal = &bp->tx_coal;
 		__bnxt_hwrm_set_coal_nq(bp, bnapi, hw_coal);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req_rx);
+	hwrm_req_drop(bp, req_tx);
 	return rc;
 }
 
 static void bnxt_hwrm_stat_ctx_free(struct bnxt *bp)
 {
-	struct hwrm_stat_ctx_clr_stats_input req0 = {0};
-	struct hwrm_stat_ctx_free_input req = {0};
+	struct hwrm_stat_ctx_clr_stats_input *req0 = NULL;
+	struct hwrm_stat_ctx_free_input *req;
 	int i;
 
 	if (!bp->bnapi)
@@ -6567,53 +6656,60 @@ static void bnxt_hwrm_stat_ctx_free(struct bnxt *bp)
 	if (BNXT_CHIP_TYPE_NITRO_A0(bp))
 		return;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req0, HWRM_STAT_CTX_CLR_STATS, -1, -1);
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_STAT_CTX_FREE, -1, -1);
-
-	mutex_lock(&bp->hwrm_cmd_lock);
+	if (hwrm_req_init(bp, req, HWRM_STAT_CTX_FREE))
+		return;
+	if (BNXT_FW_MAJ(bp) <= 20) {
+		if (hwrm_req_init(bp, req0, HWRM_STAT_CTX_CLR_STATS)) {
+			hwrm_req_drop(bp, req);
+			return;
+		}
+		hwrm_req_hold(bp, req0);
+	}
+	hwrm_req_hold(bp, req);
 	for (i = 0; i < bp->cp_nr_rings; i++) {
 		struct bnxt_napi *bnapi = bp->bnapi[i];
 		struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
 
 		if (cpr->hw_stats_ctx_id != INVALID_STATS_CTX_ID) {
-			req.stat_ctx_id = cpu_to_le32(cpr->hw_stats_ctx_id);
-			if (BNXT_FW_MAJ(bp) <= 20) {
-				req0.stat_ctx_id = req.stat_ctx_id;
-				_hwrm_send_message(bp, &req0, sizeof(req0),
-						   HWRM_CMD_TIMEOUT);
+			req->stat_ctx_id = cpu_to_le32(cpr->hw_stats_ctx_id);
+			if (req0) {
+				req0->stat_ctx_id = req->stat_ctx_id;
+				hwrm_req_send(bp, req0);
 			}
-			_hwrm_send_message(bp, &req, sizeof(req),
-					   HWRM_CMD_TIMEOUT);
+			hwrm_req_send(bp, req);
 
 			cpr->hw_stats_ctx_id = INVALID_STATS_CTX_ID;
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
+	if (req0)
+		hwrm_req_drop(bp, req0);
 }
 
 static int bnxt_hwrm_stat_ctx_alloc(struct bnxt *bp)
 {
-	int rc = 0, i;
-	struct hwrm_stat_ctx_alloc_input req = {0};
-	struct hwrm_stat_ctx_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_stat_ctx_alloc_output *resp;
+	struct hwrm_stat_ctx_alloc_input *req;
+	int rc, i;
 
 	if (BNXT_CHIP_TYPE_NITRO_A0(bp))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_STAT_CTX_ALLOC, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_STAT_CTX_ALLOC);
+	if (rc)
+		return rc;
 
-	req.stats_dma_length = cpu_to_le16(bp->hw_ring_stats_size);
-	req.update_period_ms = cpu_to_le32(bp->stats_coal_ticks / 1000);
+	req->stats_dma_length = cpu_to_le16(bp->hw_ring_stats_size);
+	req->update_period_ms = cpu_to_le32(bp->stats_coal_ticks / 1000);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	resp = hwrm_req_hold(bp, req);
 	for (i = 0; i < bp->cp_nr_rings; i++) {
 		struct bnxt_napi *bnapi = bp->bnapi[i];
 		struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
 
-		req.stats_dma_addr = cpu_to_le64(cpr->stats.hw_stats_map);
+		req->stats_dma_addr = cpu_to_le64(cpr->stats.hw_stats_map);
 
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
 		if (rc)
 			break;
 
@@ -6621,22 +6717,25 @@ static int bnxt_hwrm_stat_ctx_alloc(struct bnxt *bp)
 
 		bp->grp_info[i].fw_stats_ctx = cpr->hw_stats_ctx_id;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_func_qcfg(struct bnxt *bp)
 {
-	struct hwrm_func_qcfg_input req = {0};
-	struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_func_qcfg_output *resp;
+	struct hwrm_func_qcfg_input *req;
 	u32 min_db_offset = 0;
 	u16 flags;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
+	if (rc)
+		return rc;
+
+	req->fid = cpu_to_le16(0xffff);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto func_qcfg_exit;
 
@@ -6696,7 +6795,7 @@ static int bnxt_hwrm_func_qcfg(struct bnxt *bp)
 		bp->db_size = pci_resource_len(bp->pdev, 2);
 
 func_qcfg_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -6735,17 +6834,19 @@ static void bnxt_init_ctx_initializer(struct bnxt_ctx_mem_info *ctx,
 
 static int bnxt_hwrm_func_backing_store_qcaps(struct bnxt *bp)
 {
-	struct hwrm_func_backing_store_qcaps_input req = {0};
-	struct hwrm_func_backing_store_qcaps_output *resp =
-		bp->hwrm_cmd_resp_addr;
+	struct hwrm_func_backing_store_qcaps_output *resp;
+	struct hwrm_func_backing_store_qcaps_input *req;
 	int rc;
 
 	if (bp->hwrm_spec_code < 0x10902 || BNXT_VF(bp) || bp->ctx)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BACKING_STORE_QCAPS, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_BACKING_STORE_QCAPS);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
 	if (!rc) {
 		struct bnxt_ctx_pg_info *ctx_pg;
 		struct bnxt_ctx_mem_info *ctx;
@@ -6810,7 +6911,7 @@ static int bnxt_hwrm_func_backing_store_qcaps(struct bnxt *bp)
 		rc = 0;
 	}
 ctx_err:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -6841,15 +6942,17 @@ static void bnxt_hwrm_set_pg_attr(struct bnxt_ring_mem_info *rmem, u8 *pg_attr,
 
 static int bnxt_hwrm_func_backing_store_cfg(struct bnxt *bp, u32 enables)
 {
-	struct hwrm_func_backing_store_cfg_input req = {0};
+	struct hwrm_func_backing_store_cfg_input *req;
 	struct bnxt_ctx_mem_info *ctx = bp->ctx;
 	struct bnxt_ctx_pg_info *ctx_pg;
-	u32 req_len = sizeof(req);
+	void **__req = (void **)&req;
+	u32 req_len = sizeof(*req);
 	__le32 *num_entries;
 	__le64 *pg_dir;
 	u32 flags = 0;
 	u8 *pg_attr;
 	u32 ena;
+	int rc;
 	int i;
 
 	if (!ctx)
@@ -6857,90 +6960,93 @@ static int bnxt_hwrm_func_backing_store_cfg(struct bnxt *bp, u32 enables)
 
 	if (req_len > bp->hwrm_max_ext_req_len)
 		req_len = BNXT_BACKING_STORE_CFG_LEGACY_LEN;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BACKING_STORE_CFG, -1, -1);
-	req.enables = cpu_to_le32(enables);
+	rc = __hwrm_req_init(bp, __req, HWRM_FUNC_BACKING_STORE_CFG, req_len);
+	if (rc)
+		return rc;
 
+	req->enables = cpu_to_le32(enables);
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_QP) {
 		ctx_pg = &ctx->qp_mem;
-		req.qp_num_entries = cpu_to_le32(ctx_pg->entries);
-		req.qp_num_qp1_entries = cpu_to_le16(ctx->qp_min_qp1_entries);
-		req.qp_num_l2_entries = cpu_to_le16(ctx->qp_max_l2_entries);
-		req.qp_entry_size = cpu_to_le16(ctx->qp_entry_size);
+		req->qp_num_entries = cpu_to_le32(ctx_pg->entries);
+		req->qp_num_qp1_entries = cpu_to_le16(ctx->qp_min_qp1_entries);
+		req->qp_num_l2_entries = cpu_to_le16(ctx->qp_max_l2_entries);
+		req->qp_entry_size = cpu_to_le16(ctx->qp_entry_size);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
-				      &req.qpc_pg_size_qpc_lvl,
-				      &req.qpc_page_dir);
+				      &req->qpc_pg_size_qpc_lvl,
+				      &req->qpc_page_dir);
 	}
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_SRQ) {
 		ctx_pg = &ctx->srq_mem;
-		req.srq_num_entries = cpu_to_le32(ctx_pg->entries);
-		req.srq_num_l2_entries = cpu_to_le16(ctx->srq_max_l2_entries);
-		req.srq_entry_size = cpu_to_le16(ctx->srq_entry_size);
+		req->srq_num_entries = cpu_to_le32(ctx_pg->entries);
+		req->srq_num_l2_entries = cpu_to_le16(ctx->srq_max_l2_entries);
+		req->srq_entry_size = cpu_to_le16(ctx->srq_entry_size);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
-				      &req.srq_pg_size_srq_lvl,
-				      &req.srq_page_dir);
+				      &req->srq_pg_size_srq_lvl,
+				      &req->srq_page_dir);
 	}
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_CQ) {
 		ctx_pg = &ctx->cq_mem;
-		req.cq_num_entries = cpu_to_le32(ctx_pg->entries);
-		req.cq_num_l2_entries = cpu_to_le16(ctx->cq_max_l2_entries);
-		req.cq_entry_size = cpu_to_le16(ctx->cq_entry_size);
-		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem, &req.cq_pg_size_cq_lvl,
-				      &req.cq_page_dir);
+		req->cq_num_entries = cpu_to_le32(ctx_pg->entries);
+		req->cq_num_l2_entries = cpu_to_le16(ctx->cq_max_l2_entries);
+		req->cq_entry_size = cpu_to_le16(ctx->cq_entry_size);
+		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
+				      &req->cq_pg_size_cq_lvl,
+				      &req->cq_page_dir);
 	}
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_VNIC) {
 		ctx_pg = &ctx->vnic_mem;
-		req.vnic_num_vnic_entries =
+		req->vnic_num_vnic_entries =
 			cpu_to_le16(ctx->vnic_max_vnic_entries);
-		req.vnic_num_ring_table_entries =
+		req->vnic_num_ring_table_entries =
 			cpu_to_le16(ctx->vnic_max_ring_table_entries);
-		req.vnic_entry_size = cpu_to_le16(ctx->vnic_entry_size);
+		req->vnic_entry_size = cpu_to_le16(ctx->vnic_entry_size);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
-				      &req.vnic_pg_size_vnic_lvl,
-				      &req.vnic_page_dir);
+				      &req->vnic_pg_size_vnic_lvl,
+				      &req->vnic_page_dir);
 	}
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_STAT) {
 		ctx_pg = &ctx->stat_mem;
-		req.stat_num_entries = cpu_to_le32(ctx->stat_max_entries);
-		req.stat_entry_size = cpu_to_le16(ctx->stat_entry_size);
+		req->stat_num_entries = cpu_to_le32(ctx->stat_max_entries);
+		req->stat_entry_size = cpu_to_le16(ctx->stat_entry_size);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
-				      &req.stat_pg_size_stat_lvl,
-				      &req.stat_page_dir);
+				      &req->stat_pg_size_stat_lvl,
+				      &req->stat_page_dir);
 	}
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_MRAV) {
 		ctx_pg = &ctx->mrav_mem;
-		req.mrav_num_entries = cpu_to_le32(ctx_pg->entries);
+		req->mrav_num_entries = cpu_to_le32(ctx_pg->entries);
 		if (ctx->mrav_num_entries_units)
 			flags |=
 			FUNC_BACKING_STORE_CFG_REQ_FLAGS_MRAV_RESERVATION_SPLIT;
-		req.mrav_entry_size = cpu_to_le16(ctx->mrav_entry_size);
+		req->mrav_entry_size = cpu_to_le16(ctx->mrav_entry_size);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
-				      &req.mrav_pg_size_mrav_lvl,
-				      &req.mrav_page_dir);
+				      &req->mrav_pg_size_mrav_lvl,
+				      &req->mrav_page_dir);
 	}
 	if (enables & FUNC_BACKING_STORE_CFG_REQ_ENABLES_TIM) {
 		ctx_pg = &ctx->tim_mem;
-		req.tim_num_entries = cpu_to_le32(ctx_pg->entries);
-		req.tim_entry_size = cpu_to_le16(ctx->tim_entry_size);
+		req->tim_num_entries = cpu_to_le32(ctx_pg->entries);
+		req->tim_entry_size = cpu_to_le16(ctx->tim_entry_size);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem,
-				      &req.tim_pg_size_tim_lvl,
-				      &req.tim_page_dir);
+				      &req->tim_pg_size_tim_lvl,
+				      &req->tim_page_dir);
 	}
-	for (i = 0, num_entries = &req.tqm_sp_num_entries,
-	     pg_attr = &req.tqm_sp_pg_size_tqm_sp_lvl,
-	     pg_dir = &req.tqm_sp_page_dir,
+	for (i = 0, num_entries = &req->tqm_sp_num_entries,
+	     pg_attr = &req->tqm_sp_pg_size_tqm_sp_lvl,
+	     pg_dir = &req->tqm_sp_page_dir,
 	     ena = FUNC_BACKING_STORE_CFG_REQ_ENABLES_TQM_SP;
 	     i < BNXT_MAX_TQM_RINGS;
 	     i++, num_entries++, pg_attr++, pg_dir++, ena <<= 1) {
 		if (!(enables & ena))
 			continue;
 
-		req.tqm_entry_size = cpu_to_le16(ctx->tqm_entry_size);
+		req->tqm_entry_size = cpu_to_le16(ctx->tqm_entry_size);
 		ctx_pg = ctx->tqm_mem[i];
 		*num_entries = cpu_to_le32(ctx_pg->entries);
 		bnxt_hwrm_set_pg_attr(&ctx_pg->ring_mem, pg_attr, pg_dir);
 	}
-	req.flags = cpu_to_le32(flags);
-	return hwrm_send_message(bp, &req, req_len, HWRM_CMD_TIMEOUT);
+	req->flags = cpu_to_le32(flags);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_alloc_ctx_mem_blk(struct bnxt *bp,
@@ -7220,17 +7326,18 @@ static int bnxt_alloc_ctx_mem(struct bnxt *bp)
 
 int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all)
 {
-	struct hwrm_func_resource_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_resource_qcaps_input req = {0};
+	struct hwrm_func_resource_qcaps_output *resp;
+	struct hwrm_func_resource_qcaps_input *req;
 	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_RESOURCE_QCAPS, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_RESOURCE_QCAPS);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message_silent(bp, &req, sizeof(req),
-				       HWRM_CMD_TIMEOUT);
+	req->fid = cpu_to_le16(0xffff);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
 	if (rc)
 		goto hwrm_func_resc_qcaps_exit;
 
@@ -7271,15 +7378,14 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all)
 			pf->vf_resv_strategy = BNXT_VF_RESV_STRATEGY_MAXIMAL;
 	}
 hwrm_func_resc_qcaps_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
-/* bp->hwrm_cmd_lock already held. */
 static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
 {
-	struct hwrm_port_mac_ptp_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_port_mac_ptp_qcfg_input req = {0};
+	struct hwrm_port_mac_ptp_qcfg_output *resp;
+	struct hwrm_port_mac_ptp_qcfg_input *req;
 	struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
 	u8 flags;
 	int rc;
@@ -7289,21 +7395,27 @@ static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
 		goto no_ptp;
 	}
 
-	req.port_id = cpu_to_le16(bp->pf.port_id);
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_MAC_PTP_QCFG, -1, -1);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_MAC_PTP_QCFG);
 	if (rc)
 		goto no_ptp;
 
+	req->port_id = cpu_to_le16(bp->pf.port_id);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	if (rc)
+		goto exit;
+
 	flags = resp->flags;
 	if (!(flags & PORT_MAC_PTP_QCFG_RESP_FLAGS_HWRM_ACCESS)) {
 		rc = -ENODEV;
-		goto no_ptp;
+		goto exit;
 	}
 	if (!ptp) {
 		ptp = kzalloc(sizeof(*ptp), GFP_KERNEL);
-		if (!ptp)
-			return -ENOMEM;
+		if (!ptp) {
+			rc = -ENOMEM;
+			goto exit;
+		}
 		ptp->bp = bp;
 		bp->ptp_cfg = ptp;
 	}
@@ -7315,14 +7427,16 @@ static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
 		ptp->refclk_regs[1] = BNXT_TS_REG_TIMESYNC_TS0_UPPER;
 	} else {
 		rc = -ENODEV;
-		goto no_ptp;
+		goto exit;
 	}
 	rc = bnxt_ptp_init(bp);
+	if (rc)
+		netdev_warn(bp->dev, "PTP initialization failed.\n");
+exit:
+	hwrm_req_drop(bp, req);
 	if (!rc)
 		return 0;
 
-	netdev_warn(bp->dev, "PTP initialization failed.\n");
-
 no_ptp:
 	bnxt_ptp_clear(bp);
 	kfree(ptp);
@@ -7332,17 +7446,19 @@ static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
 
 static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 {
-	int rc = 0;
-	struct hwrm_func_qcaps_input req = {0};
-	struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_func_qcaps_output *resp;
+	struct hwrm_func_qcaps_input *req;
 	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 	u32 flags, flags_ext;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QCAPS);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->fid = cpu_to_le16(0xffff);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto hwrm_func_qcaps_exit;
 
@@ -7420,7 +7536,7 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 	}
 
 hwrm_func_qcaps_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -7451,19 +7567,20 @@ static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
 
 static int bnxt_hwrm_cfa_adv_flow_mgnt_qcaps(struct bnxt *bp)
 {
-	struct hwrm_cfa_adv_flow_mgnt_qcaps_input req = {0};
 	struct hwrm_cfa_adv_flow_mgnt_qcaps_output *resp;
-	int rc = 0;
+	struct hwrm_cfa_adv_flow_mgnt_qcaps_input *req;
 	u32 flags;
+	int rc;
 
 	if (!(bp->fw_cap & BNXT_FW_CAP_CFA_ADV_FLOW))
 		return 0;
 
-	resp = bp->hwrm_cmd_resp_addr;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_ADV_FLOW_MGNT_QCAPS, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_ADV_FLOW_MGNT_QCAPS);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto hwrm_cfa_adv_qcaps_exit;
 
@@ -7473,7 +7590,7 @@ static int bnxt_hwrm_cfa_adv_flow_mgnt_qcaps(struct bnxt *bp)
 		bp->fw_cap |= BNXT_FW_CAP_CFA_RFS_RING_TBL_IDX_V2;
 
 hwrm_cfa_adv_qcaps_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -7616,17 +7733,20 @@ static int bnxt_map_fw_health_regs(struct bnxt *bp)
 
 static int bnxt_hwrm_error_recovery_qcfg(struct bnxt *bp)
 {
-	struct hwrm_error_recovery_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_fw_health *fw_health = bp->fw_health;
-	struct hwrm_error_recovery_qcfg_input req = {0};
+	struct hwrm_error_recovery_qcfg_output *resp;
+	struct hwrm_error_recovery_qcfg_input *req;
 	int rc, i;
 
 	if (!(bp->fw_cap & BNXT_FW_CAP_ERROR_RECOVERY))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_ERROR_RECOVERY_QCFG, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_ERROR_RECOVERY_QCFG);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto err_recovery_out;
 	fw_health->flags = le32_to_cpu(resp->flags);
@@ -7668,7 +7788,7 @@ static int bnxt_hwrm_error_recovery_qcfg(struct bnxt *bp)
 			resp->delay_after_reset[i];
 	}
 err_recovery_out:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	if (!rc)
 		rc = bnxt_map_fw_health_regs(bp);
 	if (rc)
@@ -7678,12 +7798,16 @@ static int bnxt_hwrm_error_recovery_qcfg(struct bnxt *bp)
 
 static int bnxt_hwrm_func_reset(struct bnxt *bp)
 {
-	struct hwrm_func_reset_input req = {0};
+	struct hwrm_func_reset_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_RESET, -1, -1);
-	req.enables = 0;
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_RESET);
+	if (rc)
+		return rc;
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_RESET_TIMEOUT);
+	req->enables = 0;
+	hwrm_req_timeout(bp, req, HWRM_RESET_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static void bnxt_nvm_cfg_ver_get(struct bnxt *bp)
@@ -7698,16 +7822,18 @@ static void bnxt_nvm_cfg_ver_get(struct bnxt *bp)
 
 static int bnxt_hwrm_queue_qportcfg(struct bnxt *bp)
 {
-	int rc = 0;
-	struct hwrm_queue_qportcfg_input req = {0};
-	struct hwrm_queue_qportcfg_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_queue_qportcfg_output *resp;
+	struct hwrm_queue_qportcfg_input *req;
 	u8 i, j, *qptr;
 	bool no_rdma;
+	int rc = 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_QPORTCFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_QPORTCFG);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto qportcfg_exit;
 
@@ -7741,40 +7867,48 @@ static int bnxt_hwrm_queue_qportcfg(struct bnxt *bp)
 		bp->max_lltc = bp->max_tc;
 
 qportcfg_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_poll(struct bnxt *bp)
 {
-	struct hwrm_ver_get_input req = {0};
+	struct hwrm_ver_get_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VER_GET, -1, -1);
-	req.hwrm_intf_maj = HWRM_VERSION_MAJOR;
-	req.hwrm_intf_min = HWRM_VERSION_MINOR;
-	req.hwrm_intf_upd = HWRM_VERSION_UPDATE;
+	rc = hwrm_req_init(bp, req, HWRM_VER_GET);
+	if (rc)
+		return rc;
+
+	req->hwrm_intf_maj = HWRM_VERSION_MAJOR;
+	req->hwrm_intf_min = HWRM_VERSION_MINOR;
+	req->hwrm_intf_upd = HWRM_VERSION_UPDATE;
 
-	rc = _hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT | BNXT_HWRM_FULL_WAIT);
+	rc = hwrm_req_send(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_ver_get(struct bnxt *bp)
 {
-	struct hwrm_ver_get_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_ver_get_input req = {0};
+	struct hwrm_ver_get_output *resp;
+	struct hwrm_ver_get_input *req;
 	u16 fw_maj, fw_min, fw_bld, fw_rsv;
 	u32 dev_caps_cfg, hwrm_ver;
 	int rc, len;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VER_GET, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_VER_GET);
+	if (rc)
+		return rc;
+
+	hwrm_req_flags(bp, req, BNXT_HWRM_FULL_WAIT);
 	bp->hwrm_max_req_len = HWRM_MAX_REQ_LEN;
-	req.hwrm_intf_maj = HWRM_VERSION_MAJOR;
-	req.hwrm_intf_min = HWRM_VERSION_MINOR;
-	req.hwrm_intf_upd = HWRM_VERSION_UPDATE;
+	req->hwrm_intf_maj = HWRM_VERSION_MAJOR;
+	req->hwrm_intf_min = HWRM_VERSION_MINOR;
+	req->hwrm_intf_upd = HWRM_VERSION_UPDATE;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto hwrm_ver_get_exit;
 
@@ -7866,29 +8000,33 @@ static int bnxt_hwrm_ver_get(struct bnxt *bp)
 		bp->fw_cap |= BNXT_FW_CAP_CFA_ADV_FLOW;
 
 hwrm_ver_get_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 int bnxt_hwrm_fw_set_time(struct bnxt *bp)
 {
-	struct hwrm_fw_set_time_input req = {0};
+	struct hwrm_fw_set_time_input *req;
 	struct tm tm;
 	time64_t now = ktime_get_real_seconds();
+	int rc;
 
 	if ((BNXT_VF(bp) && bp->hwrm_spec_code < 0x10901) ||
 	    bp->hwrm_spec_code < 0x10400)
 		return -EOPNOTSUPP;
 
 	time64_to_tm(now, 0, &tm);
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_SET_TIME, -1, -1);
-	req.year = cpu_to_le16(1900 + tm.tm_year);
-	req.month = 1 + tm.tm_mon;
-	req.day = tm.tm_mday;
-	req.hour = tm.tm_hour;
-	req.minute = tm.tm_min;
-	req.second = tm.tm_sec;
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FW_SET_TIME);
+	if (rc)
+		return rc;
+
+	req->year = cpu_to_le16(1900 + tm.tm_year);
+	req->month = 1 + tm.tm_mon;
+	req->day = tm.tm_mday;
+	req->hour = tm.tm_hour;
+	req->minute = tm.tm_min;
+	req->second = tm.tm_sec;
+	return hwrm_req_send(bp, req);
 }
 
 static void bnxt_add_one_ctr(u64 hw, u64 *sw, u64 mask)
@@ -7976,8 +8114,9 @@ static void bnxt_accumulate_all_stats(struct bnxt *bp)
 
 static int bnxt_hwrm_port_qstats(struct bnxt *bp, u8 flags)
 {
+	struct hwrm_port_qstats_input *req;
 	struct bnxt_pf_info *pf = &bp->pf;
-	struct hwrm_port_qstats_input req = {0};
+	int rc;
 
 	if (!(bp->flags & BNXT_FLAG_PORT_STATS))
 		return 0;
@@ -7985,20 +8124,24 @@ static int bnxt_hwrm_port_qstats(struct bnxt *bp, u8 flags)
 	if (flags && !(bp->fw_cap & BNXT_FW_CAP_EXT_HW_STATS_SUPPORTED))
 		return -EOPNOTSUPP;
 
-	req.flags = flags;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_QSTATS, -1, -1);
-	req.port_id = cpu_to_le16(pf->port_id);
-	req.tx_stat_host_addr = cpu_to_le64(bp->port_stats.hw_stats_map +
+	rc = hwrm_req_init(bp, req, HWRM_PORT_QSTATS);
+	if (rc)
+		return rc;
+
+	req->flags = flags;
+	req->port_id = cpu_to_le16(pf->port_id);
+	req->tx_stat_host_addr = cpu_to_le64(bp->port_stats.hw_stats_map +
 					    BNXT_TX_PORT_STATS_BYTE_OFFSET);
-	req.rx_stat_host_addr = cpu_to_le64(bp->port_stats.hw_stats_map);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->rx_stat_host_addr = cpu_to_le64(bp->port_stats.hw_stats_map);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_port_qstats_ext(struct bnxt *bp, u8 flags)
 {
-	struct hwrm_port_qstats_ext_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_queue_pri2cos_qcfg_input req2 = {0};
-	struct hwrm_port_qstats_ext_input req = {0};
+	struct hwrm_queue_pri2cos_qcfg_output *resp_qc;
+	struct hwrm_queue_pri2cos_qcfg_input *req_qc;
+	struct hwrm_port_qstats_ext_output *resp_qs;
+	struct hwrm_port_qstats_ext_input *req_qs;
 	struct bnxt_pf_info *pf = &bp->pf;
 	u32 tx_stat_size;
 	int rc;
@@ -8009,46 +8152,53 @@ static int bnxt_hwrm_port_qstats_ext(struct bnxt *bp, u8 flags)
 	if (flags && !(bp->fw_cap & BNXT_FW_CAP_EXT_HW_STATS_SUPPORTED))
 		return -EOPNOTSUPP;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_QSTATS_EXT, -1, -1);
-	req.flags = flags;
-	req.port_id = cpu_to_le16(pf->port_id);
-	req.rx_stat_size = cpu_to_le16(sizeof(struct rx_port_stats_ext));
-	req.rx_stat_host_addr = cpu_to_le64(bp->rx_port_stats_ext.hw_stats_map);
+	rc = hwrm_req_init(bp, req_qs, HWRM_PORT_QSTATS_EXT);
+	if (rc)
+		return rc;
+
+	req_qs->flags = flags;
+	req_qs->port_id = cpu_to_le16(pf->port_id);
+	req_qs->rx_stat_size = cpu_to_le16(sizeof(struct rx_port_stats_ext));
+	req_qs->rx_stat_host_addr = cpu_to_le64(bp->rx_port_stats_ext.hw_stats_map);
 	tx_stat_size = bp->tx_port_stats_ext.hw_stats ?
 		       sizeof(struct tx_port_stats_ext) : 0;
-	req.tx_stat_size = cpu_to_le16(tx_stat_size);
-	req.tx_stat_host_addr = cpu_to_le64(bp->tx_port_stats_ext.hw_stats_map);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req_qs->tx_stat_size = cpu_to_le16(tx_stat_size);
+	req_qs->tx_stat_host_addr = cpu_to_le64(bp->tx_port_stats_ext.hw_stats_map);
+	resp_qs = hwrm_req_hold(bp, req_qs);
+	rc = hwrm_req_send(bp, req_qs);
 	if (!rc) {
-		bp->fw_rx_stats_ext_size = le16_to_cpu(resp->rx_stat_size) / 8;
+		bp->fw_rx_stats_ext_size =
+			le16_to_cpu(resp_qs->rx_stat_size) / 8;
 		bp->fw_tx_stats_ext_size = tx_stat_size ?
-			le16_to_cpu(resp->tx_stat_size) / 8 : 0;
+			le16_to_cpu(resp_qs->tx_stat_size) / 8 : 0;
 	} else {
 		bp->fw_rx_stats_ext_size = 0;
 		bp->fw_tx_stats_ext_size = 0;
 	}
+	hwrm_req_drop(bp, req_qs);
+
 	if (flags)
-		goto qstats_done;
+		return rc;
 
 	if (bp->fw_tx_stats_ext_size <=
 	    offsetof(struct tx_port_stats_ext, pfc_pri0_tx_duration_us) / 8) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
 		bp->pri2cos_valid = 0;
 		return rc;
 	}
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req2, HWRM_QUEUE_PRI2COS_QCFG, -1, -1);
-	req2.flags = cpu_to_le32(QUEUE_PRI2COS_QCFG_REQ_FLAGS_IVLAN);
+	rc = hwrm_req_init(bp, req_qc, HWRM_QUEUE_PRI2COS_QCFG);
+	if (rc)
+		return rc;
+
+	req_qc->flags = cpu_to_le32(QUEUE_PRI2COS_QCFG_REQ_FLAGS_IVLAN);
 
-	rc = _hwrm_send_message(bp, &req2, sizeof(req2), HWRM_CMD_TIMEOUT);
+	resp_qc = hwrm_req_hold(bp, req_qc);
+	rc = hwrm_req_send(bp, req_qc);
 	if (!rc) {
-		struct hwrm_queue_pri2cos_qcfg_output *resp2;
 		u8 *pri2cos;
 		int i, j;
 
-		resp2 = bp->hwrm_cmd_resp_addr;
-		pri2cos = &resp2->pri0_cos_queue_id;
+		pri2cos = &resp_qc->pri0_cos_queue_id;
 		for (i = 0; i < 8; i++) {
 			u8 queue_id = pri2cos[i];
 			u8 queue_idx;
@@ -8057,17 +8207,18 @@ static int bnxt_hwrm_port_qstats_ext(struct bnxt *bp, u8 flags)
 			queue_idx = queue_id % 10;
 			if (queue_idx > BNXT_MAX_QUEUE) {
 				bp->pri2cos_valid = false;
-				goto qstats_done;
+				hwrm_req_drop(bp, req_qc);
+				return rc;
 			}
 			for (j = 0; j < bp->max_q; j++) {
 				if (bp->q_ids[j] == queue_id)
 					bp->pri2cos_idx[i] = queue_idx;
 			}
 		}
-		bp->pri2cos_valid = 1;
+		bp->pri2cos_valid = true;
 	}
-qstats_done:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req_qc);
+
 	return rc;
 }
 
@@ -8142,35 +8293,46 @@ static void bnxt_hwrm_resource_free(struct bnxt *bp, bool close_path,
 
 static int bnxt_hwrm_set_br_mode(struct bnxt *bp, u16 br_mode)
 {
-	struct hwrm_func_cfg_input req = {0};
+	struct hwrm_func_cfg_input *req;
+	u8 evb_mode;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
-	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_EVB_MODE);
 	if (br_mode == BRIDGE_MODE_VEB)
-		req.evb_mode = FUNC_CFG_REQ_EVB_MODE_VEB;
+		evb_mode = FUNC_CFG_REQ_EVB_MODE_VEB;
 	else if (br_mode == BRIDGE_MODE_VEPA)
-		req.evb_mode = FUNC_CFG_REQ_EVB_MODE_VEPA;
+		evb_mode = FUNC_CFG_REQ_EVB_MODE_VEPA;
 	else
 		return -EINVAL;
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (rc)
+		return rc;
+
+	req->fid = cpu_to_le16(0xffff);
+	req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_EVB_MODE);
+	req->evb_mode = evb_mode;
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_set_cache_line_size(struct bnxt *bp, int size)
 {
-	struct hwrm_func_cfg_input req = {0};
+	struct hwrm_func_cfg_input *req;
+	int rc;
 
 	if (BNXT_VF(bp) || bp->hwrm_spec_code < 0x10803)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
-	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_CACHE_LINESIZE);
-	req.options = FUNC_CFG_REQ_OPTIONS_CACHE_LINESIZE_SIZE_64;
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (rc)
+		return rc;
+
+	req->fid = cpu_to_le16(0xffff);
+	req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_CACHE_LINESIZE);
+	req->options = FUNC_CFG_REQ_OPTIONS_CACHE_LINESIZE_SIZE_64;
 	if (size == 128)
-		req.options = FUNC_CFG_REQ_OPTIONS_CACHE_LINESIZE_SIZE_128;
+		req->options = FUNC_CFG_REQ_OPTIONS_CACHE_LINESIZE_SIZE_128;
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static int __bnxt_setup_vnic(struct bnxt *bp, u16 vnic_id)
@@ -9118,18 +9280,20 @@ static bool bnxt_phy_qcaps_no_speed(struct hwrm_port_phy_qcaps_output *resp)
 
 static int bnxt_hwrm_phy_qcaps(struct bnxt *bp)
 {
-	int rc = 0;
-	struct hwrm_port_phy_qcaps_input req = {0};
-	struct hwrm_port_phy_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_link_info *link_info = &bp->link_info;
+	struct hwrm_port_phy_qcaps_output *resp;
+	struct hwrm_port_phy_qcaps_input *req;
+	int rc = 0;
 
 	if (bp->hwrm_spec_code < 0x10201)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_QCAPS, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_QCAPS);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc)
 		goto hwrm_phy_qcaps_exit;
 
@@ -9167,7 +9331,7 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp)
 	bp->port_count = resp->port_cnt;
 
 hwrm_phy_qcaps_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -9180,19 +9344,21 @@ static bool bnxt_support_dropped(u16 advertising, u16 supported)
 
 int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 {
-	int rc = 0;
 	struct bnxt_link_info *link_info = &bp->link_info;
-	struct hwrm_port_phy_qcfg_input req = {0};
-	struct hwrm_port_phy_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_port_phy_qcfg_output *resp;
+	struct hwrm_port_phy_qcfg_input *req;
 	u8 link_up = link_info->link_up;
 	bool support_changed = false;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_QCFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_QCFG);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
+		hwrm_req_drop(bp, req);
 		return rc;
 	}
 
@@ -9287,7 +9453,7 @@ int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 		/* alwasy link down if not require to update link state */
 		link_info->link_up = 0;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 
 	if (!BNXT_PHY_CFG_ABLE(bp))
 		return 0;
@@ -9397,18 +9563,20 @@ static void bnxt_hwrm_set_link_common(struct bnxt *bp, struct hwrm_port_phy_cfg_
 
 int bnxt_hwrm_set_pause(struct bnxt *bp)
 {
-	struct hwrm_port_phy_cfg_input req = {0};
+	struct hwrm_port_phy_cfg_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_CFG, -1, -1);
-	bnxt_hwrm_set_pause_common(bp, &req);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_CFG);
+	if (rc)
+		return rc;
+
+	bnxt_hwrm_set_pause_common(bp, req);
 
 	if ((bp->link_info.autoneg & BNXT_AUTONEG_FLOW_CTRL) ||
 	    bp->link_info.force_link_chng)
-		bnxt_hwrm_set_link_common(bp, &req);
+		bnxt_hwrm_set_link_common(bp, req);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send(bp, req);
 	if (!rc && !(bp->link_info.autoneg & BNXT_AUTONEG_FLOW_CTRL)) {
 		/* since changing of pause setting doesn't trigger any link
 		 * change event, the driver needs to update the current pause
@@ -9421,7 +9589,6 @@ int bnxt_hwrm_set_pause(struct bnxt *bp)
 			bnxt_report_link(bp);
 	}
 	bp->link_info.force_link_chng = false;
-	mutex_unlock(&bp->hwrm_cmd_lock);
 	return rc;
 }
 
@@ -9450,22 +9617,27 @@ static void bnxt_hwrm_set_eee(struct bnxt *bp,
 
 int bnxt_hwrm_set_link_setting(struct bnxt *bp, bool set_pause, bool set_eee)
 {
-	struct hwrm_port_phy_cfg_input req = {0};
+	struct hwrm_port_phy_cfg_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_CFG);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_CFG, -1, -1);
 	if (set_pause)
-		bnxt_hwrm_set_pause_common(bp, &req);
+		bnxt_hwrm_set_pause_common(bp, req);
 
-	bnxt_hwrm_set_link_common(bp, &req);
+	bnxt_hwrm_set_link_common(bp, req);
 
 	if (set_eee)
-		bnxt_hwrm_set_eee(bp, &req);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		bnxt_hwrm_set_eee(bp, req);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_shutdown_link(struct bnxt *bp)
 {
-	struct hwrm_port_phy_cfg_input req = {0};
+	struct hwrm_port_phy_cfg_input *req;
+	int rc;
 
 	if (!BNXT_SINGLE_PF(bp))
 		return 0;
@@ -9474,9 +9646,12 @@ static int bnxt_hwrm_shutdown_link(struct bnxt *bp)
 	    !(bp->phy_flags & BNXT_PHY_FL_FW_MANAGED_LKDN))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_CFG, -1, -1);
-	req.flags = cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_FORCE_LINK_DWN);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_CFG);
+	if (rc)
+		return rc;
+
+	req->flags = cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_FORCE_LINK_DWN);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_fw_init_one(struct bnxt *bp);
@@ -9502,7 +9677,6 @@ static int bnxt_try_recover_fw(struct bnxt *bp)
 		int retry = 0, rc;
 		u32 sts;
 
-		mutex_lock(&bp->hwrm_cmd_lock);
 		do {
 			sts = bnxt_fw_health_readl(bp, BNXT_FW_HEALTH_REG);
 			rc = bnxt_hwrm_poll(bp);
@@ -9511,7 +9685,6 @@ static int bnxt_try_recover_fw(struct bnxt *bp)
 				break;
 			retry++;
 		} while (rc == -EBUSY && retry < BNXT_FW_RETRY);
-		mutex_unlock(&bp->hwrm_cmd_lock);
 
 		if (!BNXT_FW_IS_HEALTHY(sts)) {
 			netdev_err(bp->dev,
@@ -9531,8 +9704,8 @@ static int bnxt_try_recover_fw(struct bnxt *bp)
 
 static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 {
-	struct hwrm_func_drv_if_change_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_drv_if_change_input req = {0};
+	struct hwrm_func_drv_if_change_output *resp;
+	struct hwrm_func_drv_if_change_input *req;
 	bool fw_reset = !bp->irq_tbl;
 	bool resc_reinit = false;
 	int rc, retry = 0;
@@ -9541,29 +9714,34 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 	if (!(bp->fw_cap & BNXT_FW_CAP_IF_CHANGE))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_DRV_IF_CHANGE, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_DRV_IF_CHANGE);
+	if (rc)
+		return rc;
+
 	if (up)
-		req.flags = cpu_to_le32(FUNC_DRV_IF_CHANGE_REQ_FLAGS_UP);
-	mutex_lock(&bp->hwrm_cmd_lock);
+		req->flags = cpu_to_le32(FUNC_DRV_IF_CHANGE_REQ_FLAGS_UP);
+	resp = hwrm_req_hold(bp, req);
+
+	hwrm_req_flags(bp, req, BNXT_HWRM_FULL_WAIT);
 	while (retry < BNXT_FW_IF_RETRY) {
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
 		if (rc != -EAGAIN)
 			break;
 
 		msleep(50);
 		retry++;
 	}
-	if (!rc)
-		flags = le32_to_cpu(resp->flags);
-	mutex_unlock(&bp->hwrm_cmd_lock);
 
-	if (rc == -EAGAIN)
+	if (rc == -EAGAIN) {
+		hwrm_req_drop(bp, req);
 		return rc;
-	if (rc && up) {
+	} else if (!rc) {
+		flags = le32_to_cpu(resp->flags);
+	} else if (up) {
 		rc = bnxt_try_recover_fw(bp);
 		fw_reset = true;
 	}
+	hwrm_req_drop(bp, req);
 	if (rc)
 		return rc;
 
@@ -9632,8 +9810,8 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 
 static int bnxt_hwrm_port_led_qcaps(struct bnxt *bp)
 {
-	struct hwrm_port_led_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_port_led_qcaps_input req = {0};
+	struct hwrm_port_led_qcaps_output *resp;
+	struct hwrm_port_led_qcaps_input *req;
 	struct bnxt_pf_info *pf = &bp->pf;
 	int rc;
 
@@ -9641,12 +9819,15 @@ static int bnxt_hwrm_port_led_qcaps(struct bnxt *bp)
 	if (BNXT_VF(bp) || bp->hwrm_spec_code < 0x10601)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_LED_QCAPS, -1, -1);
-	req.port_id = cpu_to_le16(pf->port_id);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_LED_QCAPS);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(pf->port_id);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
+		hwrm_req_drop(bp, req);
 		return rc;
 	}
 	if (resp->num_leds > 0 && resp->num_leds < BNXT_MAX_LED) {
@@ -9666,52 +9847,64 @@ static int bnxt_hwrm_port_led_qcaps(struct bnxt *bp)
 			}
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return 0;
 }
 
 int bnxt_hwrm_alloc_wol_fltr(struct bnxt *bp)
 {
-	struct hwrm_wol_filter_alloc_input req = {0};
-	struct hwrm_wol_filter_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_wol_filter_alloc_output *resp;
+	struct hwrm_wol_filter_alloc_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_WOL_FILTER_ALLOC, -1, -1);
-	req.port_id = cpu_to_le16(bp->pf.port_id);
-	req.wol_type = WOL_FILTER_ALLOC_REQ_WOL_TYPE_MAGICPKT;
-	req.enables = cpu_to_le32(WOL_FILTER_ALLOC_REQ_ENABLES_MAC_ADDRESS);
-	memcpy(req.mac_address, bp->dev->dev_addr, ETH_ALEN);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_WOL_FILTER_ALLOC);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(bp->pf.port_id);
+	req->wol_type = WOL_FILTER_ALLOC_REQ_WOL_TYPE_MAGICPKT;
+	req->enables = cpu_to_le32(WOL_FILTER_ALLOC_REQ_ENABLES_MAC_ADDRESS);
+	memcpy(req->mac_address, bp->dev->dev_addr, ETH_ALEN);
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		bp->wol_filter_id = resp->wol_filter_id;
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 int bnxt_hwrm_free_wol_fltr(struct bnxt *bp)
 {
-	struct hwrm_wol_filter_free_input req = {0};
+	struct hwrm_wol_filter_free_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_WOL_FILTER_FREE, -1, -1);
-	req.port_id = cpu_to_le16(bp->pf.port_id);
-	req.enables = cpu_to_le32(WOL_FILTER_FREE_REQ_ENABLES_WOL_FILTER_ID);
-	req.wol_filter_id = bp->wol_filter_id;
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_WOL_FILTER_FREE);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(bp->pf.port_id);
+	req->enables = cpu_to_le32(WOL_FILTER_FREE_REQ_ENABLES_WOL_FILTER_ID);
+	req->wol_filter_id = bp->wol_filter_id;
+
+	return hwrm_req_send(bp, req);
 }
 
 static u16 bnxt_hwrm_get_wol_fltrs(struct bnxt *bp, u16 handle)
 {
-	struct hwrm_wol_filter_qcfg_input req = {0};
-	struct hwrm_wol_filter_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_wol_filter_qcfg_output *resp;
+	struct hwrm_wol_filter_qcfg_input *req;
 	u16 next_handle = 0;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_WOL_FILTER_QCFG, -1, -1);
-	req.port_id = cpu_to_le16(bp->pf.port_id);
-	req.handle = cpu_to_le16(handle);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_WOL_FILTER_QCFG);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(bp->pf.port_id);
+	req->handle = cpu_to_le16(handle);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		next_handle = le16_to_cpu(resp->next_handle);
 		if (next_handle != 0) {
@@ -9722,7 +9915,7 @@ static u16 bnxt_hwrm_get_wol_fltrs(struct bnxt *bp, u16 handle)
 			}
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return next_handle;
 }
 
@@ -9743,19 +9936,20 @@ static void bnxt_get_wol_settings(struct bnxt *bp)
 static ssize_t bnxt_show_temp(struct device *dev,
 			      struct device_attribute *devattr, char *buf)
 {
-	struct hwrm_temp_monitor_query_input req = {0};
 	struct hwrm_temp_monitor_query_output *resp;
+	struct hwrm_temp_monitor_query_input *req;
 	struct bnxt *bp = dev_get_drvdata(dev);
 	u32 len = 0;
 	int rc;
 
-	resp = bp->hwrm_cmd_resp_addr;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_TEMP_MONITOR_QUERY, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
+	if (rc)
+		return rc;
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		len = sprintf(buf, "%u\n", resp->temp * 1000); /* display millidegree */
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	if (rc)
 		return rc;
 	return len;
@@ -9778,12 +9972,13 @@ static void bnxt_hwmon_close(struct bnxt *bp)
 
 static void bnxt_hwmon_open(struct bnxt *bp)
 {
-	struct hwrm_temp_monitor_query_input req = {0};
+	struct hwrm_temp_monitor_query_input *req;
 	struct pci_dev *pdev = bp->pdev;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_TEMP_MONITOR_QUERY, -1, -1);
-	rc = hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
+	if (!rc)
+		rc = hwrm_req_send_silent(bp, req);
 	if (rc == -EACCES || rc == -EOPNOTSUPP) {
 		bnxt_hwmon_close(bp);
 		return;
@@ -10220,53 +10415,60 @@ static int bnxt_close(struct net_device *dev)
 static int bnxt_hwrm_port_phy_read(struct bnxt *bp, u16 phy_addr, u16 reg,
 				   u16 *val)
 {
-	struct hwrm_port_phy_mdio_read_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_port_phy_mdio_read_input req = {0};
+	struct hwrm_port_phy_mdio_read_output *resp;
+	struct hwrm_port_phy_mdio_read_input *req;
 	int rc;
 
 	if (bp->hwrm_spec_code < 0x10a00)
 		return -EOPNOTSUPP;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_MDIO_READ, -1, -1);
-	req.port_id = cpu_to_le16(bp->pf.port_id);
-	req.phy_addr = phy_addr;
-	req.reg_addr = cpu_to_le16(reg & 0x1f);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_MDIO_READ);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(bp->pf.port_id);
+	req->phy_addr = phy_addr;
+	req->reg_addr = cpu_to_le16(reg & 0x1f);
 	if (mdio_phy_id_is_c45(phy_addr)) {
-		req.cl45_mdio = 1;
-		req.phy_addr = mdio_phy_id_prtad(phy_addr);
-		req.dev_addr = mdio_phy_id_devad(phy_addr);
-		req.reg_addr = cpu_to_le16(reg);
+		req->cl45_mdio = 1;
+		req->phy_addr = mdio_phy_id_prtad(phy_addr);
+		req->dev_addr = mdio_phy_id_devad(phy_addr);
+		req->reg_addr = cpu_to_le16(reg);
 	}
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		*val = le16_to_cpu(resp->reg_data);
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_port_phy_write(struct bnxt *bp, u16 phy_addr, u16 reg,
 				    u16 val)
 {
-	struct hwrm_port_phy_mdio_write_input req = {0};
+	struct hwrm_port_phy_mdio_write_input *req;
+	int rc;
 
 	if (bp->hwrm_spec_code < 0x10a00)
 		return -EOPNOTSUPP;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_MDIO_WRITE, -1, -1);
-	req.port_id = cpu_to_le16(bp->pf.port_id);
-	req.phy_addr = phy_addr;
-	req.reg_addr = cpu_to_le16(reg & 0x1f);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_MDIO_WRITE);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(bp->pf.port_id);
+	req->phy_addr = phy_addr;
+	req->reg_addr = cpu_to_le16(reg & 0x1f);
 	if (mdio_phy_id_is_c45(phy_addr)) {
-		req.cl45_mdio = 1;
-		req.phy_addr = mdio_phy_id_prtad(phy_addr);
-		req.dev_addr = mdio_phy_id_devad(phy_addr);
-		req.reg_addr = cpu_to_le16(reg);
+		req->cl45_mdio = 1;
+		req->phy_addr = mdio_phy_id_prtad(phy_addr);
+		req->dev_addr = mdio_phy_id_devad(phy_addr);
+		req->reg_addr = cpu_to_le16(reg);
 	}
-	req.reg_data = cpu_to_le16(val);
+	req->reg_data = cpu_to_le16(val);
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 /* rtnl_lock held */
@@ -10508,6 +10710,7 @@ static int bnxt_cfg_rx_mode(struct bnxt *bp)
 {
 	struct net_device *dev = bp->dev;
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[0];
+	struct hwrm_cfa_l2_filter_free_input *req;
 	struct netdev_hw_addr *ha;
 	int i, off = 0, rc;
 	bool uc_update;
@@ -10519,19 +10722,16 @@ static int bnxt_cfg_rx_mode(struct bnxt *bp)
 	if (!uc_update)
 		goto skip_uc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_L2_FILTER_FREE);
+	if (rc)
+		return rc;
+	hwrm_req_hold(bp, req);
 	for (i = 1; i < vnic->uc_filter_count; i++) {
-		struct hwrm_cfa_l2_filter_free_input req = {0};
-
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_L2_FILTER_FREE, -1,
-				       -1);
+		req->l2_filter_id = vnic->fw_l2_filter_id[i];
 
-		req.l2_filter_id = vnic->fw_l2_filter_id[i];
-
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 
 	vnic->uc_filter_count = 1;
 
@@ -10883,22 +11083,30 @@ static netdev_features_t bnxt_features_check(struct sk_buff *skb,
 int bnxt_dbg_hwrm_rd_reg(struct bnxt *bp, u32 reg_off, u16 num_words,
 			 u32 *reg_buf)
 {
-	struct hwrm_dbg_read_direct_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_dbg_read_direct_input req = {0};
+	struct hwrm_dbg_read_direct_output *resp;
+	struct hwrm_dbg_read_direct_input *req;
 	__le32 *dbg_reg_buf;
 	dma_addr_t mapping;
 	int rc, i;
 
-	dbg_reg_buf = dma_alloc_coherent(&bp->pdev->dev, num_words * 4,
-					 &mapping, GFP_KERNEL);
-	if (!dbg_reg_buf)
-		return -ENOMEM;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_DBG_READ_DIRECT, -1, -1);
-	req.host_dest_addr = cpu_to_le64(mapping);
-	req.read_addr = cpu_to_le32(reg_off + CHIMP_REG_VIEW_ADDR);
-	req.read_len32 = cpu_to_le32(num_words);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_DBG_READ_DIRECT);
+	if (rc)
+		return rc;
+
+	dbg_reg_buf = hwrm_req_dma_slice(bp, req, num_words * 4,
+					 &mapping);
+	if (!dbg_reg_buf) {
+		rc = -ENOMEM;
+		goto dbg_rd_reg_exit;
+	}
+
+	req->host_dest_addr = cpu_to_le64(mapping);
+
+	resp = hwrm_req_hold(bp, req);
+	req->read_addr = cpu_to_le32(reg_off + CHIMP_REG_VIEW_ADDR);
+	req->read_len32 = cpu_to_le32(num_words);
+
+	rc = hwrm_req_send(bp, req);
 	if (rc || resp->error_code) {
 		rc = -EIO;
 		goto dbg_rd_reg_exit;
@@ -10907,28 +11115,30 @@ int bnxt_dbg_hwrm_rd_reg(struct bnxt *bp, u32 reg_off, u16 num_words,
 		reg_buf[i] = le32_to_cpu(dbg_reg_buf[i]);
 
 dbg_rd_reg_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	dma_free_coherent(&bp->pdev->dev, num_words * 4, dbg_reg_buf, mapping);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_dbg_hwrm_ring_info_get(struct bnxt *bp, u8 ring_type,
 				       u32 ring_id, u32 *prod, u32 *cons)
 {
-	struct hwrm_dbg_ring_info_get_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_dbg_ring_info_get_input req = {0};
+	struct hwrm_dbg_ring_info_get_output *resp;
+	struct hwrm_dbg_ring_info_get_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_DBG_RING_INFO_GET, -1, -1);
-	req.ring_type = ring_type;
-	req.fw_ring_id = cpu_to_le32(ring_id);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_DBG_RING_INFO_GET);
+	if (rc)
+		return rc;
+
+	req->ring_type = ring_type;
+	req->fw_ring_id = cpu_to_le32(ring_id);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		*prod = le32_to_cpu(resp->producer_index);
 		*cons = le32_to_cpu(resp->consumer_index);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -10986,18 +11196,22 @@ static void bnxt_dbg_dump_states(struct bnxt *bp)
 static int bnxt_hwrm_rx_ring_reset(struct bnxt *bp, int ring_nr)
 {
 	struct bnxt_rx_ring_info *rxr = &bp->rx_ring[ring_nr];
-	struct hwrm_ring_reset_input req = {0};
+	struct hwrm_ring_reset_input *req;
 	struct bnxt_napi *bnapi = rxr->bnapi;
 	struct bnxt_cp_ring_info *cpr;
 	u16 cp_ring_id;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_RING_RESET);
+	if (rc)
+		return rc;
 
 	cpr = &bnapi->cp_ring;
 	cp_ring_id = cpr->cp_ring_struct.fw_ring_id;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_RESET, cp_ring_id, -1);
-	req.ring_type = RING_RESET_REQ_RING_TYPE_RX_RING_GRP;
-	req.ring_id = cpu_to_le16(bp->grp_info[bnapi->index].fw_grp_id);
-	return hwrm_send_message_silent(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+	req->cmpl_ring = cpu_to_le16(cp_ring_id);
+	req->ring_type = RING_RESET_REQ_RING_TYPE_RX_RING_GRP;
+	req->ring_id = cpu_to_le16(bp->grp_info[bnapi->index].fw_grp_id);
+	return hwrm_req_send_silent(bp, req);
 }
 
 static void bnxt_reset_task(struct bnxt *bp, bool silent)
@@ -11426,12 +11640,15 @@ static void bnxt_init_ethtool_link_settings(struct bnxt *bp)
 static void bnxt_fw_echo_reply(struct bnxt *bp)
 {
 	struct bnxt_fw_health *fw_health = bp->fw_health;
-	struct hwrm_func_echo_response_input req = {0};
+	struct hwrm_func_echo_response_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_ECHO_RESPONSE, -1, -1);
-	req.event_data1 = cpu_to_le32(fw_health->echo_req_data1);
-	req.event_data2 = cpu_to_le32(fw_health->echo_req_data2);
-	hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_ECHO_RESPONSE);
+	if (rc)
+		return;
+	req->event_data1 = cpu_to_le32(fw_health->echo_req_data1);
+	req->event_data2 = cpu_to_le32(fw_health->echo_req_data2);
+	hwrm_req_send(bp, req);
 }
 
 static void bnxt_sp_task(struct work_struct *work)
@@ -11810,14 +12027,16 @@ static void bnxt_reset_all(struct bnxt *bp)
 		for (i = 0; i < fw_health->fw_reset_seq_cnt; i++)
 			bnxt_fw_reset_writel(bp, i);
 	} else if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_CO_CPU) {
-		struct hwrm_fw_reset_input req = {0};
-
-		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1,
-				       HWRM_TARGET_ID_KONG);
-		req.embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_CHIP;
-		req.selfrst_status = FW_RESET_REQ_SELFRST_STATUS_SELFRSTASAP;
-		req.flags = FW_RESET_REQ_FLAGS_RESET_GRACEFUL;
-		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		struct hwrm_fw_reset_input *req;
+
+		rc = hwrm_req_init(bp, req, HWRM_FW_RESET);
+		if (!rc) {
+			req->target_id = cpu_to_le16(HWRM_TARGET_ID_KONG);
+			req->embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_CHIP;
+			req->selfrst_status = FW_RESET_REQ_SELFRST_STATUS_SELFRSTASAP;
+			req->flags = FW_RESET_REQ_FLAGS_RESET_GRACEFUL;
+			rc = hwrm_req_send(bp, req);
+		}
 		if (rc != -ENODEV)
 			netdev_warn(bp->dev, "Unable to reset FW rc=%d\n", rc);
 	}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
index df898665763a..228a5db7e143 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
@@ -39,38 +39,43 @@ static int bnxt_queue_to_tc(struct bnxt *bp, u8 queue_id)
 
 static int bnxt_hwrm_queue_pri2cos_cfg(struct bnxt *bp, struct ieee_ets *ets)
 {
-	struct hwrm_queue_pri2cos_cfg_input req = {0};
+	struct hwrm_queue_pri2cos_cfg_input *req;
 	u8 *pri2cos;
-	int i;
+	int rc, i;
+
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_PRI2COS_CFG);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PRI2COS_CFG, -1, -1);
-	req.flags = cpu_to_le32(QUEUE_PRI2COS_CFG_REQ_FLAGS_PATH_BIDIR |
-				QUEUE_PRI2COS_CFG_REQ_FLAGS_IVLAN);
+	req->flags = cpu_to_le32(QUEUE_PRI2COS_CFG_REQ_FLAGS_PATH_BIDIR |
+				 QUEUE_PRI2COS_CFG_REQ_FLAGS_IVLAN);
 
-	pri2cos = &req.pri0_cos_queue_id;
+	pri2cos = &req->pri0_cos_queue_id;
 	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 		u8 qidx;
 
-		req.enables |= cpu_to_le32(
+		req->enables |= cpu_to_le32(
 			QUEUE_PRI2COS_CFG_REQ_ENABLES_PRI0_COS_QUEUE_ID << i);
 
 		qidx = bp->tc_to_qidx[ets->prio_tc[i]];
 		pri2cos[i] = bp->q_info[qidx].queue_id;
 	}
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_queue_pri2cos_qcfg(struct bnxt *bp, struct ieee_ets *ets)
 {
-	struct hwrm_queue_pri2cos_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_queue_pri2cos_qcfg_input req = {0};
-	int rc = 0;
+	struct hwrm_queue_pri2cos_qcfg_output *resp;
+	struct hwrm_queue_pri2cos_qcfg_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PRI2COS_QCFG, -1, -1);
-	req.flags = cpu_to_le32(QUEUE_PRI2COS_QCFG_REQ_FLAGS_IVLAN);
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_PRI2COS_QCFG);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->flags = cpu_to_le32(QUEUE_PRI2COS_QCFG_REQ_FLAGS_IVLAN);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		u8 *pri2cos = &resp->pri0_cos_queue_id;
 		int i;
@@ -84,23 +89,26 @@ static int bnxt_hwrm_queue_pri2cos_qcfg(struct bnxt *bp, struct ieee_ets *ets)
 				ets->prio_tc[i] = tc;
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_queue_cos2bw_cfg(struct bnxt *bp, struct ieee_ets *ets,
 				      u8 max_tc)
 {
-	struct hwrm_queue_cos2bw_cfg_input req = {0};
+	struct hwrm_queue_cos2bw_cfg_input *req;
 	struct bnxt_cos2bw_cfg cos2bw;
 	void *data;
-	int i;
+	int rc, i;
+
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_COS2BW_CFG);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_COS2BW_CFG, -1, -1);
 	for (i = 0; i < max_tc; i++) {
 		u8 qidx = bp->tc_to_qidx[i];
 
-		req.enables |= cpu_to_le32(
+		req->enables |= cpu_to_le32(
 			QUEUE_COS2BW_CFG_REQ_ENABLES_COS_QUEUE_ID0_VALID <<
 			qidx);
 
@@ -121,30 +129,32 @@ static int bnxt_hwrm_queue_cos2bw_cfg(struct bnxt *bp, struct ieee_ets *ets,
 				cpu_to_le32((ets->tc_tx_bw[i] * 100) |
 					    BW_VALUE_UNIT_PERCENT1_100);
 		}
-		data = &req.unused_0 + qidx * (sizeof(cos2bw) - 4);
+		data = &req->unused_0 + qidx * (sizeof(cos2bw) - 4);
 		memcpy(data, &cos2bw.queue_id, sizeof(cos2bw) - 4);
 		if (qidx == 0) {
-			req.queue_id0 = cos2bw.queue_id;
-			req.unused_0 = 0;
+			req->queue_id0 = cos2bw.queue_id;
+			req->unused_0 = 0;
 		}
 	}
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_queue_cos2bw_qcfg(struct bnxt *bp, struct ieee_ets *ets)
 {
-	struct hwrm_queue_cos2bw_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_queue_cos2bw_qcfg_input req = {0};
+	struct hwrm_queue_cos2bw_qcfg_output *resp;
+	struct hwrm_queue_cos2bw_qcfg_input *req;
 	struct bnxt_cos2bw_cfg cos2bw;
 	void *data;
 	int rc, i;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_COS2BW_QCFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_COS2BW_QCFG);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
+		hwrm_req_drop(bp, req);
 		return rc;
 	}
 
@@ -168,7 +178,7 @@ static int bnxt_hwrm_queue_cos2bw_qcfg(struct bnxt *bp, struct ieee_ets *ets)
 			ets->tc_tx_bw[tc] = cos2bw.bw_weight;
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return 0;
 }
 
@@ -230,11 +240,12 @@ static int bnxt_queue_remap(struct bnxt *bp, unsigned int lltc_mask)
 
 static int bnxt_hwrm_queue_pfc_cfg(struct bnxt *bp, struct ieee_pfc *pfc)
 {
-	struct hwrm_queue_pfcenable_cfg_input req = {0};
+	struct hwrm_queue_pfcenable_cfg_input *req;
 	struct ieee_ets *my_ets = bp->ieee_ets;
 	unsigned int tc_mask = 0, pri_mask = 0;
 	u8 i, pri, lltc_count = 0;
 	bool need_q_remap = false;
+	int rc;
 
 	if (!my_ets)
 		return -EINVAL;
@@ -267,38 +278,43 @@ static int bnxt_hwrm_queue_pfc_cfg(struct bnxt *bp, struct ieee_pfc *pfc)
 	if (need_q_remap)
 		bnxt_queue_remap(bp, tc_mask);
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PFCENABLE_CFG, -1, -1);
-	req.flags = cpu_to_le32(pri_mask);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCENABLE_CFG);
+	if (rc)
+		return rc;
+
+	req->flags = cpu_to_le32(pri_mask);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_queue_pfc_qcfg(struct bnxt *bp, struct ieee_pfc *pfc)
 {
-	struct hwrm_queue_pfcenable_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_queue_pfcenable_qcfg_input req = {0};
+	struct hwrm_queue_pfcenable_qcfg_output *resp;
+	struct hwrm_queue_pfcenable_qcfg_input *req;
 	u8 pri_mask;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PFCENABLE_QCFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCENABLE_QCFG);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (rc) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
+		hwrm_req_drop(bp, req);
 		return rc;
 	}
 
 	pri_mask = le32_to_cpu(resp->flags);
 	pfc->pfc_en = pri_mask;
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return 0;
 }
 
 static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
 				  bool add)
 {
-	struct hwrm_fw_set_structured_data_input set = {0};
-	struct hwrm_fw_get_structured_data_input get = {0};
+	struct hwrm_fw_set_structured_data_input *set;
+	struct hwrm_fw_get_structured_data_input *get;
 	struct hwrm_struct_data_dcbx_app *fw_app;
 	struct hwrm_struct_hdr *data;
 	dma_addr_t mapping;
@@ -308,19 +324,26 @@ static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
 	if (bp->hwrm_spec_code < 0x10601)
 		return 0;
 
+	rc = hwrm_req_init(bp, get, HWRM_FW_GET_STRUCTURED_DATA);
+	if (rc)
+		return rc;
+
+	hwrm_req_hold(bp, get);
+	hwrm_req_alloc_flags(bp, get, GFP_KERNEL | __GFP_ZERO);
+
 	n = IEEE_8021QAZ_MAX_TCS;
 	data_len = sizeof(*data) + sizeof(*fw_app) * n;
-	data = dma_alloc_coherent(&bp->pdev->dev, data_len, &mapping,
-				  GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
+	data = hwrm_req_dma_slice(bp, get, data_len, &mapping);
+	if (!data) {
+		rc = -ENOMEM;
+		goto set_app_exit;
+	}
 
-	bnxt_hwrm_cmd_hdr_init(bp, &get, HWRM_FW_GET_STRUCTURED_DATA, -1, -1);
-	get.dest_data_addr = cpu_to_le64(mapping);
-	get.structure_id = cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP);
-	get.subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
-	get.count = 0;
-	rc = hwrm_send_message(bp, &get, sizeof(get), HWRM_CMD_TIMEOUT);
+	get->dest_data_addr = cpu_to_le64(mapping);
+	get->structure_id = cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP);
+	get->subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
+	get->count = 0;
+	rc = hwrm_req_send(bp, get);
 	if (rc)
 		goto set_app_exit;
 
@@ -366,44 +389,49 @@ static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
 	data->len = cpu_to_le16(sizeof(*fw_app) * n);
 	data->subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
 
-	bnxt_hwrm_cmd_hdr_init(bp, &set, HWRM_FW_SET_STRUCTURED_DATA, -1, -1);
-	set.src_data_addr = cpu_to_le64(mapping);
-	set.data_len = cpu_to_le16(sizeof(*data) + sizeof(*fw_app) * n);
-	set.hdr_cnt = 1;
-	rc = hwrm_send_message(bp, &set, sizeof(set), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, set, HWRM_FW_SET_STRUCTURED_DATA);
+	if (rc)
+		goto set_app_exit;
+
+	set->src_data_addr = cpu_to_le64(mapping);
+	set->data_len = cpu_to_le16(sizeof(*data) + sizeof(*fw_app) * n);
+	set->hdr_cnt = 1;
+	rc = hwrm_req_send(bp, set);
 
 set_app_exit:
-	dma_free_coherent(&bp->pdev->dev, data_len, data, mapping);
+	hwrm_req_drop(bp, get); /* dropping get request and associated slice */
 	return rc;
 }
 
 static int bnxt_hwrm_queue_dscp_qcaps(struct bnxt *bp)
 {
-	struct hwrm_queue_dscp_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_queue_dscp_qcaps_input req = {0};
+	struct hwrm_queue_dscp_qcaps_output *resp;
+	struct hwrm_queue_dscp_qcaps_input *req;
 	int rc;
 
 	bp->max_dscp_value = 0;
 	if (bp->hwrm_spec_code < 0x10800 || BNXT_VF(bp))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_DSCP_QCAPS, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_DSCP_QCAPS);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
 	if (!rc) {
 		bp->max_dscp_value = (1 << resp->num_dscp_bits) - 1;
 		if (bp->max_dscp_value < 0x3f)
 			bp->max_dscp_value = 0;
 	}
-
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
 static int bnxt_hwrm_queue_dscp2pri_cfg(struct bnxt *bp, struct dcb_app *app,
 					bool add)
 {
-	struct hwrm_queue_dscp2pri_cfg_input req = {0};
+	struct hwrm_queue_dscp2pri_cfg_input *req;
 	struct bnxt_dscp2pri_entry *dscp2pri;
 	dma_addr_t mapping;
 	int rc;
@@ -411,23 +439,25 @@ static int bnxt_hwrm_queue_dscp2pri_cfg(struct bnxt *bp, struct dcb_app *app,
 	if (bp->hwrm_spec_code < 0x10800)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_DSCP2PRI_CFG, -1, -1);
-	dscp2pri = dma_alloc_coherent(&bp->pdev->dev, sizeof(*dscp2pri),
-				      &mapping, GFP_KERNEL);
-	if (!dscp2pri)
+	rc = hwrm_req_init(bp, req, HWRM_QUEUE_DSCP2PRI_CFG);
+	if (rc)
+		return rc;
+
+	dscp2pri = hwrm_req_dma_slice(bp, req, sizeof(*dscp2pri), &mapping);
+	if (!dscp2pri) {
+		hwrm_req_drop(bp, req);
 		return -ENOMEM;
+	}
 
-	req.src_data_addr = cpu_to_le64(mapping);
+	req->src_data_addr = cpu_to_le64(mapping);
 	dscp2pri->dscp = app->protocol;
 	if (add)
 		dscp2pri->mask = 0x3f;
 	else
 		dscp2pri->mask = 0;
 	dscp2pri->pri = app->priority;
-	req.entry_cnt = cpu_to_le16(1);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	dma_free_coherent(&bp->pdev->dev, sizeof(*dscp2pri), dscp2pri,
-			  mapping);
+	req->entry_cnt = cpu_to_le16(1);
+	rc = hwrm_req_send(bp, req);
 	return rc;
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 00b284a028c5..1423cc617d93 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -355,28 +355,34 @@ static void bnxt_copy_from_nvm_data(union devlink_param_value *dst,
 static int bnxt_hwrm_get_nvm_cfg_ver(struct bnxt *bp,
 				     union devlink_param_value *nvm_cfg_ver)
 {
-	struct hwrm_nvm_get_variable_input req = {0};
+	struct hwrm_nvm_get_variable_input *req;
 	union bnxt_nvm_data *data;
 	dma_addr_t data_dma_addr;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_VARIABLE, -1, -1);
-	data = dma_alloc_coherent(&bp->pdev->dev, sizeof(*data),
-				  &data_dma_addr, GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
+	rc = hwrm_req_init(bp, req, HWRM_NVM_GET_VARIABLE);
+	if (rc)
+		return rc;
+
+	data = hwrm_req_dma_slice(bp, req, sizeof(*data), &data_dma_addr);
+	if (!data) {
+		rc = -ENOMEM;
+		goto exit;
+	}
 
-	req.dest_data_addr = cpu_to_le64(data_dma_addr);
-	req.data_len = cpu_to_le16(BNXT_NVM_CFG_VER_BITS);
-	req.option_num = cpu_to_le16(NVM_OFF_NVM_CFG_VER);
+	hwrm_req_hold(bp, req);
+	req->dest_data_addr = cpu_to_le64(data_dma_addr);
+	req->data_len = cpu_to_le16(BNXT_NVM_CFG_VER_BITS);
+	req->option_num = cpu_to_le16(NVM_OFF_NVM_CFG_VER);
 
-	rc = hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send_silent(bp, req);
 	if (!rc)
 		bnxt_copy_from_nvm_data(nvm_cfg_ver, data,
 					BNXT_NVM_CFG_VER_BITS,
 					BNXT_NVM_CFG_VER_BYTES);
 
-	dma_free_coherent(&bp->pdev->dev, sizeof(*data), data, data_dma_addr);
+exit:
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -563,17 +569,20 @@ static int bnxt_dl_info_get(struct devlink *dl, struct devlink_info_req *req,
 }
 
 static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
-			     int msg_len, union devlink_param_value *val)
+			     union devlink_param_value *val)
 {
 	struct hwrm_nvm_get_variable_input *req = msg;
 	struct bnxt_dl_nvm_param nvm_param;
+	struct hwrm_err_output *resp;
 	union bnxt_nvm_data *data;
 	dma_addr_t data_dma_addr;
 	int idx = 0, rc, i;
 
 	/* Get/Set NVM CFG parameter is supported only on PFs */
-	if (BNXT_VF(bp))
+	if (BNXT_VF(bp)) {
+		hwrm_req_drop(bp, req);
 		return -EPERM;
+	}
 
 	for (i = 0; i < ARRAY_SIZE(nvm_params); i++) {
 		if (nvm_params[i].id == param_id) {
@@ -582,18 +591,22 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
 		}
 	}
 
-	if (i == ARRAY_SIZE(nvm_params))
+	if (i == ARRAY_SIZE(nvm_params)) {
+		hwrm_req_drop(bp, req);
 		return -EOPNOTSUPP;
+	}
 
 	if (nvm_param.dir_type == BNXT_NVM_PORT_CFG)
 		idx = bp->pf.port_id;
 	else if (nvm_param.dir_type == BNXT_NVM_FUNC_CFG)
 		idx = bp->pf.fw_fid - BNXT_FIRST_PF_FID;
 
-	data = dma_alloc_coherent(&bp->pdev->dev, sizeof(*data),
-				  &data_dma_addr, GFP_KERNEL);
-	if (!data)
+	data = hwrm_req_dma_slice(bp, req, sizeof(*data), &data_dma_addr);
+
+	if (!data) {
+		hwrm_req_drop(bp, req);
 		return -ENOMEM;
+	}
 
 	req->dest_data_addr = cpu_to_le64(data_dma_addr);
 	req->data_len = cpu_to_le16(nvm_param.nvm_num_bits);
@@ -602,26 +615,24 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
 	if (idx)
 		req->dimensions = cpu_to_le16(1);
 
+	resp = hwrm_req_hold(bp, req);
 	if (req->req_type == cpu_to_le16(HWRM_NVM_SET_VARIABLE)) {
 		bnxt_copy_to_nvm_data(data, val, nvm_param.nvm_num_bits,
 				      nvm_param.dl_num_bytes);
-		rc = hwrm_send_message(bp, msg, msg_len, HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, msg);
 	} else {
-		rc = hwrm_send_message_silent(bp, msg, msg_len,
-					      HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send_silent(bp, msg);
 		if (!rc) {
 			bnxt_copy_from_nvm_data(val, data,
 						nvm_param.nvm_num_bits,
 						nvm_param.dl_num_bytes);
 		} else {
-			struct hwrm_err_output *resp = bp->hwrm_cmd_resp_addr;
-
 			if (resp->cmd_err ==
 				NVM_GET_VARIABLE_CMD_ERR_CODE_VAR_NOT_EXIST)
 				rc = -EOPNOTSUPP;
 		}
 	}
-	dma_free_coherent(&bp->pdev->dev, sizeof(*data), data, data_dma_addr);
+	hwrm_req_drop(bp, req);
 	if (rc == -EACCES)
 		netdev_err(bp->dev, "PF does not have admin privileges to modify NVM config\n");
 	return rc;
@@ -630,15 +641,17 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
 static int bnxt_dl_nvm_param_get(struct devlink *dl, u32 id,
 				 struct devlink_param_gset_ctx *ctx)
 {
-	struct hwrm_nvm_get_variable_input req = {0};
 	struct bnxt *bp = bnxt_get_bp_from_dl(dl);
+	struct hwrm_nvm_get_variable_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_VARIABLE, -1, -1);
-	rc = bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);
-	if (!rc)
-		if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
-			ctx->val.vbool = !ctx->val.vbool;
+	rc = hwrm_req_init(bp, req, HWRM_NVM_GET_VARIABLE);
+	if (rc)
+		return rc;
+
+	rc = bnxt_hwrm_nvm_req(bp, id, req, &ctx->val);
+	if (!rc && id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
+		ctx->val.vbool = !ctx->val.vbool;
 
 	return rc;
 }
@@ -646,15 +659,18 @@ static int bnxt_dl_nvm_param_get(struct devlink *dl, u32 id,
 static int bnxt_dl_nvm_param_set(struct devlink *dl, u32 id,
 				 struct devlink_param_gset_ctx *ctx)
 {
-	struct hwrm_nvm_set_variable_input req = {0};
 	struct bnxt *bp = bnxt_get_bp_from_dl(dl);
+	struct hwrm_nvm_set_variable_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_SET_VARIABLE, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_NVM_SET_VARIABLE);
+	if (rc)
+		return rc;
 
 	if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
 		ctx->val.vbool = !ctx->val.vbool;
 
-	return bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);
+	return bnxt_hwrm_nvm_req(bp, id, req, &ctx->val);
 }
 
 static int bnxt_dl_msix_validate(struct devlink *dl, u32 id,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index b6aaf14bd7fd..b056e3c29bbd 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -1366,7 +1366,7 @@ static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 			  void *_p)
 {
 	struct pcie_ctx_hw_stats *hw_pcie_stats;
-	struct hwrm_pcie_qstats_input req = {0};
+	struct hwrm_pcie_qstats_input *req;
 	struct bnxt *bp = netdev_priv(dev);
 	dma_addr_t hw_pcie_stats_addr;
 	int rc;
@@ -1377,18 +1377,21 @@ static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 	if (!(bp->fw_cap & BNXT_FW_CAP_PCIE_STATS_SUPPORTED))
 		return;
 
-	hw_pcie_stats = dma_alloc_coherent(&bp->pdev->dev,
-					   sizeof(*hw_pcie_stats),
-					   &hw_pcie_stats_addr, GFP_KERNEL);
-	if (!hw_pcie_stats)
+	if (hwrm_req_init(bp, req, HWRM_PCIE_QSTATS))
 		return;
 
+	hw_pcie_stats = hwrm_req_dma_slice(bp, req, sizeof(*hw_pcie_stats),
+					   &hw_pcie_stats_addr);
+	if (!hw_pcie_stats) {
+		hwrm_req_drop(bp, req);
+		return;
+	}
+
 	regs->version = 1;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PCIE_QSTATS, -1, -1);
-	req.pcie_stat_size = cpu_to_le16(sizeof(*hw_pcie_stats));
-	req.pcie_stat_host_addr = cpu_to_le64(hw_pcie_stats_addr);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	hwrm_req_hold(bp, req); /* hold on to slice */
+	req->pcie_stat_size = cpu_to_le16(sizeof(*hw_pcie_stats));
+	req->pcie_stat_host_addr = cpu_to_le64(hw_pcie_stats_addr);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		__le64 *src = (__le64 *)hw_pcie_stats;
 		u64 *dst = (u64 *)(_p + BNXT_PXP_REG_LEN);
@@ -1397,9 +1400,7 @@ static void bnxt_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 		for (i = 0; i < sizeof(*hw_pcie_stats) / sizeof(__le64); i++)
 			dst[i] = le64_to_cpu(src[i]);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	dma_free_coherent(&bp->pdev->dev, sizeof(*hw_pcie_stats), hw_pcie_stats,
-			  hw_pcie_stats_addr);
+	hwrm_req_drop(bp, req);
 }
 
 static void bnxt_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
@@ -1979,7 +1980,7 @@ static u32 bnxt_ethtool_forced_fec_to_fw(struct bnxt_link_info *link_info,
 static int bnxt_set_fecparam(struct net_device *dev,
 			     struct ethtool_fecparam *fecparam)
 {
-	struct hwrm_port_phy_cfg_input req = {0};
+	struct hwrm_port_phy_cfg_input *req;
 	struct bnxt *bp = netdev_priv(dev);
 	struct bnxt_link_info *link_info;
 	u32 new_cfg, fec = fecparam->fec;
@@ -2011,9 +2012,11 @@ static int bnxt_set_fecparam(struct net_device *dev,
 	}
 
 apply_fec:
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_CFG, -1, -1);
-	req.flags = cpu_to_le32(new_cfg | PORT_PHY_CFG_REQ_FLAGS_RESET_PHY);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_CFG);
+	if (rc)
+		return rc;
+	req->flags = cpu_to_le32(new_cfg | PORT_PHY_CFG_REQ_FLAGS_RESET_PHY);
+	rc = hwrm_req_send(bp, req);
 	/* update current settings */
 	if (!rc) {
 		mutex_lock(&bp->link_lock);
@@ -2107,19 +2110,22 @@ static u32 bnxt_get_link(struct net_device *dev)
 int bnxt_hwrm_nvm_get_dev_info(struct bnxt *bp,
 			       struct hwrm_nvm_get_dev_info_output *nvm_dev_info)
 {
-	struct hwrm_nvm_get_dev_info_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_nvm_get_dev_info_input req = {0};
+	struct hwrm_nvm_get_dev_info_output *resp;
+	struct hwrm_nvm_get_dev_info_input *req;
 	int rc;
 
 	if (BNXT_VF(bp))
 		return -EOPNOTSUPP;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_DEV_INFO, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_NVM_GET_DEV_INFO);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		memcpy(nvm_dev_info, resp, sizeof(*resp));
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -2132,77 +2138,67 @@ static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
 				u16 ext, u16 *index, u32 *item_length,
 				u32 *data_length);
 
-static int __bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
-			      u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
-			      u32 dir_item_len, const u8 *data,
-			      size_t data_len)
+static int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
+			    u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
+			    u32 dir_item_len, const u8 *data,
+			    size_t data_len)
 {
 	struct bnxt *bp = netdev_priv(dev);
+	struct hwrm_nvm_write_input *req;
 	int rc;
-	struct hwrm_nvm_write_input req = {0};
-	dma_addr_t dma_handle;
-	u8 *kmem = NULL;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_WRITE, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_NVM_WRITE);
+	if (rc)
+		return rc;
 
-	req.dir_type = cpu_to_le16(dir_type);
-	req.dir_ordinal = cpu_to_le16(dir_ordinal);
-	req.dir_ext = cpu_to_le16(dir_ext);
-	req.dir_attr = cpu_to_le16(dir_attr);
-	req.dir_item_length = cpu_to_le32(dir_item_len);
 	if (data_len && data) {
-		req.dir_data_length = cpu_to_le32(data_len);
+		dma_addr_t dma_handle;
+		u8 *kmem;
 
-		kmem = dma_alloc_coherent(&bp->pdev->dev, data_len, &dma_handle,
-					  GFP_KERNEL);
-		if (!kmem)
+		kmem = hwrm_req_dma_slice(bp, req, data_len, &dma_handle);
+		if (!kmem) {
+			hwrm_req_drop(bp, req);
 			return -ENOMEM;
+		}
+
+		req->dir_data_length = cpu_to_le32(data_len);
 
 		memcpy(kmem, data, data_len);
-		req.host_src_addr = cpu_to_le64(dma_handle);
+		req->host_src_addr = cpu_to_le64(dma_handle);
 	}
 
-	rc = _hwrm_send_message(bp, &req, sizeof(req), FLASH_NVRAM_TIMEOUT);
-	if (kmem)
-		dma_free_coherent(&bp->pdev->dev, data_len, kmem, dma_handle);
+	hwrm_req_timeout(bp, req, FLASH_NVRAM_TIMEOUT);
+	req->dir_type = cpu_to_le16(dir_type);
+	req->dir_ordinal = cpu_to_le16(dir_ordinal);
+	req->dir_ext = cpu_to_le16(dir_ext);
+	req->dir_attr = cpu_to_le16(dir_attr);
+	req->dir_item_length = cpu_to_le32(dir_item_len);
+	rc = hwrm_req_send(bp, req);
 
 	if (rc == -EACCES)
 		bnxt_print_admin_err(bp);
 	return rc;
 }
 
-static int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
-			    u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
-			    const u8 *data, size_t data_len)
-{
-	struct bnxt *bp = netdev_priv(dev);
-	int rc;
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = __bnxt_flash_nvram(dev, dir_type, dir_ordinal, dir_ext, dir_attr,
-				0, data, data_len);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return rc;
-}
-
 static int bnxt_hwrm_firmware_reset(struct net_device *dev, u8 proc_type,
 				    u8 self_reset, u8 flags)
 {
-	struct hwrm_fw_reset_input req = {0};
 	struct bnxt *bp = netdev_priv(dev);
+	struct hwrm_fw_reset_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FW_RESET);
+	if (rc)
+		return rc;
 
-	req.embedded_proc_type = proc_type;
-	req.selfrst_status = self_reset;
-	req.flags = flags;
+	req->embedded_proc_type = proc_type;
+	req->selfrst_status = self_reset;
+	req->flags = flags;
 
 	if (proc_type == FW_RESET_REQ_EMBEDDED_PROC_TYPE_AP) {
-		rc = hwrm_send_message_silent(bp, &req, sizeof(req),
-					      HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send_silent(bp, req);
 	} else {
-		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
 		if (rc == -EACCES)
 			bnxt_print_admin_err(bp);
 	}
@@ -2340,7 +2336,7 @@ static int bnxt_flash_firmware(struct net_device *dev,
 		return -EINVAL;
 	}
 	rc = bnxt_flash_nvram(dev, dir_type, BNX_DIR_ORDINAL_FIRST,
-			      0, 0, fw_data, fw_size);
+			      0, 0, 0, fw_data, fw_size);
 	if (rc == 0)	/* Firmware update successful */
 		rc = bnxt_firmware_reset(dev, dir_type);
 
@@ -2393,7 +2389,7 @@ static int bnxt_flash_microcode(struct net_device *dev,
 		return -EINVAL;
 	}
 	rc = bnxt_flash_nvram(dev, dir_type, BNX_DIR_ORDINAL_FIRST,
-			      0, 0, fw_data, fw_size);
+			      0, 0, 0, fw_data, fw_size);
 
 	return rc;
 }
@@ -2459,7 +2455,7 @@ static int bnxt_flash_firmware_from_file(struct net_device *dev,
 		rc = bnxt_flash_microcode(dev, dir_type, fw->data, fw->size);
 	else
 		rc = bnxt_flash_nvram(dev, dir_type, BNX_DIR_ORDINAL_FIRST,
-				      0, 0, fw->data, fw->size);
+				      0, 0, 0, fw->data, fw->size);
 	release_firmware(fw);
 	return rc;
 }
@@ -2471,21 +2467,23 @@ static int bnxt_flash_firmware_from_file(struct net_device *dev,
 int bnxt_flash_package_from_fw_obj(struct net_device *dev, const struct firmware *fw,
 				   u32 install_type)
 {
-	struct hwrm_nvm_install_update_input install = {0};
-	struct hwrm_nvm_install_update_output resp = {0};
-	struct hwrm_nvm_modify_input modify = {0};
+	struct hwrm_nvm_install_update_input *install;
+	struct hwrm_nvm_install_update_output *resp;
+	struct hwrm_nvm_modify_input *modify;
 	struct bnxt *bp = netdev_priv(dev);
 	bool defrag_attempted = false;
 	dma_addr_t dma_handle;
 	u8 *kmem = NULL;
 	u32 modify_len;
 	u32 item_len;
-	int rc = 0;
 	u16 index;
+	int rc;
 
 	bnxt_hwrm_fw_set_time(bp);
 
-	bnxt_hwrm_cmd_hdr_init(bp, &modify, HWRM_NVM_MODIFY, -1, -1);
+	rc = hwrm_req_init(bp, modify, HWRM_NVM_MODIFY);
+	if (rc)
+		return rc;
 
 	/* Try allocating a large DMA buffer first.  Older fw will
 	 * cause excessive NVRAM erases when using small blocks.
@@ -2493,22 +2491,33 @@ int bnxt_flash_package_from_fw_obj(struct net_device *dev, const struct firmware
 	modify_len = roundup_pow_of_two(fw->size);
 	modify_len = min_t(u32, modify_len, BNXT_PKG_DMA_SIZE);
 	while (1) {
-		kmem = dma_alloc_coherent(&bp->pdev->dev, modify_len,
-					  &dma_handle, GFP_KERNEL);
+		kmem = hwrm_req_dma_slice(bp, modify, modify_len, &dma_handle);
 		if (!kmem && modify_len > PAGE_SIZE)
 			modify_len /= 2;
 		else
 			break;
 	}
-	if (!kmem)
+	if (!kmem) {
+		hwrm_req_drop(bp, modify);
 		return -ENOMEM;
+	}
 
-	modify.host_src_addr = cpu_to_le64(dma_handle);
+	rc = hwrm_req_init(bp, install, HWRM_NVM_INSTALL_UPDATE);
+	if (rc) {
+		hwrm_req_drop(bp, modify);
+		return rc;
+	}
+
+	hwrm_req_timeout(bp, modify, FLASH_PACKAGE_TIMEOUT);
+	hwrm_req_timeout(bp, install, INSTALL_PACKAGE_TIMEOUT);
 
-	bnxt_hwrm_cmd_hdr_init(bp, &install, HWRM_NVM_INSTALL_UPDATE, -1, -1);
+	hwrm_req_hold(bp, modify);
+	modify->host_src_addr = cpu_to_le64(dma_handle);
+
+	resp = hwrm_req_hold(bp, install);
 	if ((install_type & 0xffff) == 0)
 		install_type >>= 16;
-	install.install_type = cpu_to_le32(install_type);
+	install->install_type = cpu_to_le32(install_type);
 
 	do {
 		u32 copied = 0, len = modify_len;
@@ -2528,76 +2537,69 @@ int bnxt_flash_package_from_fw_obj(struct net_device *dev, const struct firmware
 			break;
 		}
 
-		modify.dir_idx = cpu_to_le16(index);
+		modify->dir_idx = cpu_to_le16(index);
 
 		if (fw->size > modify_len)
-			modify.flags = BNXT_NVM_MORE_FLAG;
+			modify->flags = BNXT_NVM_MORE_FLAG;
 		while (copied < fw->size) {
 			u32 balance = fw->size - copied;
 
 			if (balance <= modify_len) {
 				len = balance;
 				if (copied)
-					modify.flags |= BNXT_NVM_LAST_FLAG;
+					modify->flags |= BNXT_NVM_LAST_FLAG;
 			}
 			memcpy(kmem, fw->data + copied, len);
-			modify.len = cpu_to_le32(len);
-			modify.offset = cpu_to_le32(copied);
-			rc = hwrm_send_message(bp, &modify, sizeof(modify),
-					       FLASH_PACKAGE_TIMEOUT);
+			modify->len = cpu_to_le32(len);
+			modify->offset = cpu_to_le32(copied);
+			rc = hwrm_req_send(bp, modify);
 			if (rc)
 				goto pkg_abort;
 			copied += len;
 		}
-		mutex_lock(&bp->hwrm_cmd_lock);
-		rc = _hwrm_send_message_silent(bp, &install, sizeof(install),
-					       INSTALL_PACKAGE_TIMEOUT);
-		memcpy(&resp, bp->hwrm_cmd_resp_addr, sizeof(resp));
+
+		rc = hwrm_req_send_silent(bp, install);
 
 		if (defrag_attempted) {
 			/* We have tried to defragment already in the previous
 			 * iteration. Return with the result for INSTALL_UPDATE
 			 */
-			mutex_unlock(&bp->hwrm_cmd_lock);
 			break;
 		}
 
-		if (rc && ((struct hwrm_err_output *)&resp)->cmd_err ==
+		if (rc && ((struct hwrm_err_output *)resp)->cmd_err ==
 		    NVM_INSTALL_UPDATE_CMD_ERR_CODE_FRAG_ERR) {
-			install.flags =
+			install->flags =
 				cpu_to_le16(NVM_INSTALL_UPDATE_REQ_FLAGS_ALLOWED_TO_DEFRAG);
 
-			rc = _hwrm_send_message_silent(bp, &install,
-						       sizeof(install),
-						       INSTALL_PACKAGE_TIMEOUT);
-			memcpy(&resp, bp->hwrm_cmd_resp_addr, sizeof(resp));
+			rc = hwrm_req_send_silent(bp, install);
 
-			if (rc && ((struct hwrm_err_output *)&resp)->cmd_err ==
+			if (rc && ((struct hwrm_err_output *)resp)->cmd_err ==
 			    NVM_INSTALL_UPDATE_CMD_ERR_CODE_NO_SPACE) {
 				/* FW has cleared NVM area, driver will create
 				 * UPDATE directory and try the flash again
 				 */
 				defrag_attempted = true;
-				install.flags = 0;
-				rc = __bnxt_flash_nvram(bp->dev,
-							BNX_DIR_TYPE_UPDATE,
-							BNX_DIR_ORDINAL_FIRST,
-							0, 0, item_len, NULL,
-							0);
+				install->flags = 0;
+				rc = bnxt_flash_nvram(bp->dev,
+						      BNX_DIR_TYPE_UPDATE,
+						      BNX_DIR_ORDINAL_FIRST,
+						      0, 0, item_len, NULL, 0);
 			} else if (rc) {
 				netdev_err(dev, "HWRM_NVM_INSTALL_UPDATE failure rc :%x\n", rc);
 			}
 		} else if (rc) {
 			netdev_err(dev, "HWRM_NVM_INSTALL_UPDATE failure rc :%x\n", rc);
 		}
-		mutex_unlock(&bp->hwrm_cmd_lock);
 	} while (defrag_attempted && !rc);
 
 pkg_abort:
-	dma_free_coherent(&bp->pdev->dev, modify_len, kmem, dma_handle);
-	if (resp.result) {
+	hwrm_req_drop(bp, modify);
+	hwrm_req_drop(bp, install);
+
+	if (resp->result) {
 		netdev_err(dev, "PKG install error = %d, problem_item = %d\n",
-			   (s8)resp.result, (int)resp.problem_item);
+			   (s8)resp->result, (int)resp->problem_item);
 		rc = -ENOPKG;
 	}
 	if (rc == -EACCES)
@@ -2643,20 +2645,22 @@ static int bnxt_flash_device(struct net_device *dev,
 
 static int nvm_get_dir_info(struct net_device *dev, u32 *entries, u32 *length)
 {
+	struct hwrm_nvm_get_dir_info_output *output;
+	struct hwrm_nvm_get_dir_info_input *req;
 	struct bnxt *bp = netdev_priv(dev);
 	int rc;
-	struct hwrm_nvm_get_dir_info_input req = {0};
-	struct hwrm_nvm_get_dir_info_output *output = bp->hwrm_cmd_resp_addr;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_DIR_INFO, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_NVM_GET_DIR_INFO);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	output = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		*entries = le32_to_cpu(output->entries);
 		*length = le32_to_cpu(output->entry_length);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -2682,7 +2686,7 @@ static int bnxt_get_nvram_directory(struct net_device *dev, u32 len, u8 *data)
 	u8 *buf;
 	size_t buflen;
 	dma_addr_t dma_handle;
-	struct hwrm_nvm_get_dir_entries_input req = {0};
+	struct hwrm_nvm_get_dir_entries_input *req;
 
 	rc = nvm_get_dir_info(dev, &dir_entries, &entry_length);
 	if (rc != 0)
@@ -2700,20 +2704,23 @@ static int bnxt_get_nvram_directory(struct net_device *dev, u32 len, u8 *data)
 	len -= 2;
 	memset(data, 0xff, len);
 
+	rc = hwrm_req_init(bp, req, HWRM_NVM_GET_DIR_ENTRIES);
+	if (rc)
+		return rc;
+
 	buflen = dir_entries * entry_length;
-	buf = dma_alloc_coherent(&bp->pdev->dev, buflen, &dma_handle,
-				 GFP_KERNEL);
+	buf = hwrm_req_dma_slice(bp, req, buflen, &dma_handle);
 	if (!buf) {
-		netdev_err(dev, "dma_alloc_coherent failure, length = %u\n",
-			   (unsigned)buflen);
+		hwrm_req_drop(bp, req);
 		return -ENOMEM;
 	}
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_DIR_ENTRIES, -1, -1);
-	req.host_dest_addr = cpu_to_le64(dma_handle);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->host_dest_addr = cpu_to_le64(dma_handle);
+
+	hwrm_req_hold(bp, req); /* hold the slice */
+	rc = hwrm_req_send(bp, req);
 	if (rc == 0)
 		memcpy(data, buf, len > buflen ? buflen : len);
-	dma_free_coherent(&bp->pdev->dev, buflen, buf, dma_handle);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -2724,28 +2731,31 @@ static int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
 	int rc;
 	u8 *buf;
 	dma_addr_t dma_handle;
-	struct hwrm_nvm_read_input req = {0};
+	struct hwrm_nvm_read_input *req;
 
 	if (!length)
 		return -EINVAL;
 
-	buf = dma_alloc_coherent(&bp->pdev->dev, length, &dma_handle,
-				 GFP_KERNEL);
+	rc = hwrm_req_init(bp, req, HWRM_NVM_READ);
+	if (rc)
+		return rc;
+
+	buf = hwrm_req_dma_slice(bp, req, length, &dma_handle);
 	if (!buf) {
-		netdev_err(dev, "dma_alloc_coherent failure, length = %u\n",
-			   (unsigned)length);
+		hwrm_req_drop(bp, req);
 		return -ENOMEM;
 	}
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_READ, -1, -1);
-	req.host_dest_addr = cpu_to_le64(dma_handle);
-	req.dir_idx = cpu_to_le16(index);
-	req.offset = cpu_to_le32(offset);
-	req.len = cpu_to_le32(length);
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->host_dest_addr = cpu_to_le64(dma_handle);
+	req->dir_idx = cpu_to_le16(index);
+	req->offset = cpu_to_le32(offset);
+	req->len = cpu_to_le32(length);
+
+	hwrm_req_hold(bp, req); /* hold the slice */
+	rc = hwrm_req_send(bp, req);
 	if (rc == 0)
 		memcpy(data, buf, length);
-	dma_free_coherent(&bp->pdev->dev, length, buf, dma_handle);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -2753,20 +2763,23 @@ static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
 				u16 ext, u16 *index, u32 *item_length,
 				u32 *data_length)
 {
+	struct hwrm_nvm_find_dir_entry_output *output;
+	struct hwrm_nvm_find_dir_entry_input *req;
 	struct bnxt *bp = netdev_priv(dev);
 	int rc;
-	struct hwrm_nvm_find_dir_entry_input req = {0};
-	struct hwrm_nvm_find_dir_entry_output *output = bp->hwrm_cmd_resp_addr;
-
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_FIND_DIR_ENTRY, -1, -1);
-	req.enables = 0;
-	req.dir_idx = 0;
-	req.dir_type = cpu_to_le16(type);
-	req.dir_ordinal = cpu_to_le16(ordinal);
-	req.dir_ext = cpu_to_le16(ext);
-	req.opt_ordinal = NVM_FIND_DIR_ENTRY_REQ_OPT_ORDINAL_EQ;
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+	rc = hwrm_req_init(bp, req, HWRM_NVM_FIND_DIR_ENTRY);
+	if (rc)
+		return rc;
+
+	req->enables = 0;
+	req->dir_idx = 0;
+	req->dir_type = cpu_to_le16(type);
+	req->dir_ordinal = cpu_to_le16(ordinal);
+	req->dir_ext = cpu_to_le16(ext);
+	req->opt_ordinal = NVM_FIND_DIR_ENTRY_REQ_OPT_ORDINAL_EQ;
+	output = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
 	if (rc == 0) {
 		if (index)
 			*index = le16_to_cpu(output->dir_idx);
@@ -2775,7 +2788,7 @@ static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
 		if (data_length)
 			*data_length = le32_to_cpu(output->dir_data_length);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -2870,12 +2883,16 @@ static int bnxt_get_eeprom(struct net_device *dev,
 
 static int bnxt_erase_nvram_directory(struct net_device *dev, u8 index)
 {
+	struct hwrm_nvm_erase_dir_entry_input *req;
 	struct bnxt *bp = netdev_priv(dev);
-	struct hwrm_nvm_erase_dir_entry_input req = {0};
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_ERASE_DIR_ENTRY, -1, -1);
-	req.dir_idx = cpu_to_le16(index);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_NVM_ERASE_DIR_ENTRY);
+	if (rc)
+		return rc;
+
+	req->dir_idx = cpu_to_le16(index);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_set_eeprom(struct net_device *dev,
@@ -2915,7 +2932,7 @@ static int bnxt_set_eeprom(struct net_device *dev,
 	ordinal = eeprom->offset >> 16;
 	attr = eeprom->offset & 0xffff;
 
-	return bnxt_flash_nvram(dev, type, ordinal, ext, attr, data,
+	return bnxt_flash_nvram(dev, type, ordinal, ext, attr, 0, data,
 				eeprom->len);
 }
 
@@ -3003,31 +3020,33 @@ static int bnxt_read_sfp_module_eeprom_info(struct bnxt *bp, u16 i2c_addr,
 					    u16 page_number, u16 start_addr,
 					    u16 data_length, u8 *buf)
 {
-	struct hwrm_port_phy_i2c_read_input req = {0};
-	struct hwrm_port_phy_i2c_read_output *output = bp->hwrm_cmd_resp_addr;
+	struct hwrm_port_phy_i2c_read_output *output;
+	struct hwrm_port_phy_i2c_read_input *req;
 	int rc, byte_offset = 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_I2C_READ, -1, -1);
-	req.i2c_slave_addr = i2c_addr;
-	req.page_number = cpu_to_le16(page_number);
-	req.port_id = cpu_to_le16(bp->pf.port_id);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_I2C_READ);
+	if (rc)
+		return rc;
+
+	output = hwrm_req_hold(bp, req);
+	req->i2c_slave_addr = i2c_addr;
+	req->page_number = cpu_to_le16(page_number);
+	req->port_id = cpu_to_le16(bp->pf.port_id);
 	do {
 		u16 xfer_size;
 
 		xfer_size = min_t(u16, data_length, BNXT_MAX_PHY_I2C_RESP_SIZE);
 		data_length -= xfer_size;
-		req.page_offset = cpu_to_le16(start_addr + byte_offset);
-		req.data_length = xfer_size;
-		req.enables = cpu_to_le32(start_addr + byte_offset ?
+		req->page_offset = cpu_to_le16(start_addr + byte_offset);
+		req->data_length = xfer_size;
+		req->enables = cpu_to_le32(start_addr + byte_offset ?
 				 PORT_PHY_I2C_READ_REQ_ENABLES_PAGE_OFFSET : 0);
-		mutex_lock(&bp->hwrm_cmd_lock);
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
 		if (!rc)
 			memcpy(buf + byte_offset, output->data, xfer_size);
-		mutex_unlock(&bp->hwrm_cmd_lock);
 		byte_offset += xfer_size;
 	} while (!rc && data_length > 0);
+	hwrm_req_drop(bp, req);
 
 	return rc;
 }
@@ -3136,13 +3155,13 @@ static int bnxt_nway_reset(struct net_device *dev)
 static int bnxt_set_phys_id(struct net_device *dev,
 			    enum ethtool_phys_id_state state)
 {
-	struct hwrm_port_led_cfg_input req = {0};
+	struct hwrm_port_led_cfg_input *req;
 	struct bnxt *bp = netdev_priv(dev);
 	struct bnxt_pf_info *pf = &bp->pf;
 	struct bnxt_led_cfg *led_cfg;
 	u8 led_state;
 	__le16 duration;
-	int i;
+	int rc, i;
 
 	if (!bp->num_leds || BNXT_VF(bp))
 		return -EOPNOTSUPP;
@@ -3156,27 +3175,35 @@ static int bnxt_set_phys_id(struct net_device *dev,
 	} else {
 		return -EINVAL;
 	}
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_LED_CFG, -1, -1);
-	req.port_id = cpu_to_le16(pf->port_id);
-	req.num_leds = bp->num_leds;
-	led_cfg = (struct bnxt_led_cfg *)&req.led0_id;
+	rc = hwrm_req_init(bp, req, HWRM_PORT_LED_CFG);
+	if (rc)
+		return rc;
+
+	req->port_id = cpu_to_le16(pf->port_id);
+	req->num_leds = bp->num_leds;
+	led_cfg = (struct bnxt_led_cfg *)&req->led0_id;
 	for (i = 0; i < bp->num_leds; i++, led_cfg++) {
-		req.enables |= BNXT_LED_DFLT_ENABLES(i);
+		req->enables |= BNXT_LED_DFLT_ENABLES(i);
 		led_cfg->led_id = bp->leds[i].led_id;
 		led_cfg->led_state = led_state;
 		led_cfg->led_blink_on = duration;
 		led_cfg->led_blink_off = duration;
 		led_cfg->led_group_id = bp->leds[i].led_group_id;
 	}
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_selftest_irq(struct bnxt *bp, u16 cmpl_ring)
 {
-	struct hwrm_selftest_irq_input req = {0};
+	struct hwrm_selftest_irq_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_SELFTEST_IRQ, cmpl_ring, -1);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_SELFTEST_IRQ);
+	if (rc)
+		return rc;
+
+	req->cmpl_ring = cpu_to_le16(cmpl_ring);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_test_irq(struct bnxt *bp)
@@ -3196,31 +3223,37 @@ static int bnxt_test_irq(struct bnxt *bp)
 
 static int bnxt_hwrm_mac_loopback(struct bnxt *bp, bool enable)
 {
-	struct hwrm_port_mac_cfg_input req = {0};
+	struct hwrm_port_mac_cfg_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_MAC_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_MAC_CFG);
+	if (rc)
+		return rc;
 
-	req.enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_LPBK);
+	req->enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_LPBK);
 	if (enable)
-		req.lpbk = PORT_MAC_CFG_REQ_LPBK_LOCAL;
+		req->lpbk = PORT_MAC_CFG_REQ_LPBK_LOCAL;
 	else
-		req.lpbk = PORT_MAC_CFG_REQ_LPBK_NONE;
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		req->lpbk = PORT_MAC_CFG_REQ_LPBK_NONE;
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_query_force_speeds(struct bnxt *bp, u16 *force_speeds)
 {
-	struct hwrm_port_phy_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_port_phy_qcaps_input req = {0};
+	struct hwrm_port_phy_qcaps_output *resp;
+	struct hwrm_port_phy_qcaps_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_QCAPS, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_QCAPS);
+	if (rc)
+		return rc;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		*force_speeds = le16_to_cpu(resp->supported_speeds_force_mode);
 
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -3255,7 +3288,7 @@ static int bnxt_disable_an_for_lpbk(struct bnxt *bp,
 	req->force_link_speed = cpu_to_le16(fw_speed);
 	req->flags |= cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_FORCE |
 				  PORT_PHY_CFG_REQ_FLAGS_RESET_PHY);
-	rc = hwrm_send_message(bp, req, sizeof(*req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send(bp, req);
 	req->flags = 0;
 	req->force_link_speed = cpu_to_le16(0);
 	return rc;
@@ -3263,21 +3296,29 @@ static int bnxt_disable_an_for_lpbk(struct bnxt *bp,
 
 static int bnxt_hwrm_phy_loopback(struct bnxt *bp, bool enable, bool ext)
 {
-	struct hwrm_port_phy_cfg_input req = {0};
+	struct hwrm_port_phy_cfg_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_PORT_PHY_CFG);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_CFG, -1, -1);
+	/* prevent bnxt_disable_an_for_lpbk() from consuming the request */
+	hwrm_req_hold(bp, req);
 
 	if (enable) {
-		bnxt_disable_an_for_lpbk(bp, &req);
+		bnxt_disable_an_for_lpbk(bp, req);
 		if (ext)
-			req.lpbk = PORT_PHY_CFG_REQ_LPBK_EXTERNAL;
+			req->lpbk = PORT_PHY_CFG_REQ_LPBK_EXTERNAL;
 		else
-			req.lpbk = PORT_PHY_CFG_REQ_LPBK_LOCAL;
+			req->lpbk = PORT_PHY_CFG_REQ_LPBK_LOCAL;
 	} else {
-		req.lpbk = PORT_PHY_CFG_REQ_LPBK_NONE;
+		req->lpbk = PORT_PHY_CFG_REQ_LPBK_NONE;
 	}
-	req.enables = cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_LPBK);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->enables = cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_LPBK);
+	rc = hwrm_req_send(bp, req);
+	hwrm_req_drop(bp, req);
+	return rc;
 }
 
 static int bnxt_rx_loopback(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
@@ -3395,17 +3436,21 @@ static int bnxt_run_loopback(struct bnxt *bp)
 
 static int bnxt_run_fw_tests(struct bnxt *bp, u8 test_mask, u8 *test_results)
 {
-	struct hwrm_selftest_exec_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_selftest_exec_input req = {0};
+	struct hwrm_selftest_exec_output *resp;
+	struct hwrm_selftest_exec_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_SELFTEST_EXEC, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	resp->test_success = 0;
-	req.flags = test_mask;
-	rc = _hwrm_send_message(bp, &req, sizeof(req), bp->test_info->timeout);
+	rc = hwrm_req_init(bp, req, HWRM_SELFTEST_EXEC);
+	if (rc)
+		return rc;
+
+	hwrm_req_timeout(bp, req, bp->test_info->timeout);
+	req->flags = test_mask;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	*test_results = resp->test_success;
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -3564,32 +3609,34 @@ static int bnxt_reset(struct net_device *dev, u32 *flags)
 	return 0;
 }
 
-static int bnxt_hwrm_dbg_dma_data(struct bnxt *bp, void *msg, int msg_len,
+static int bnxt_hwrm_dbg_dma_data(struct bnxt *bp, void *msg,
 				  struct bnxt_hwrm_dbg_dma_info *info)
 {
-	struct hwrm_dbg_cmn_output *cmn_resp = bp->hwrm_cmd_resp_addr;
 	struct hwrm_dbg_cmn_input *cmn_req = msg;
 	__le16 *seq_ptr = msg + info->seq_off;
+	struct hwrm_dbg_cmn_output *cmn_resp;
 	u16 seq = 0, len, segs_off;
-	void *resp = cmn_resp;
 	dma_addr_t dma_handle;
+	void *dma_buf, *resp;
 	int rc, off = 0;
-	void *dma_buf;
 
-	dma_buf = dma_alloc_coherent(&bp->pdev->dev, info->dma_len, &dma_handle,
-				     GFP_KERNEL);
-	if (!dma_buf)
+	dma_buf = hwrm_req_dma_slice(bp, msg, info->dma_len, &dma_handle);
+	if (!dma_buf) {
+		hwrm_req_drop(bp, msg);
 		return -ENOMEM;
+	}
+
+	hwrm_req_timeout(bp, msg, HWRM_COREDUMP_TIMEOUT);
+	cmn_resp = hwrm_req_hold(bp, msg);
+	resp = cmn_resp;
 
 	segs_off = offsetof(struct hwrm_dbg_coredump_list_output,
 			    total_segments);
 	cmn_req->host_dest_addr = cpu_to_le64(dma_handle);
 	cmn_req->host_buf_len = cpu_to_le32(info->dma_len);
-	mutex_lock(&bp->hwrm_cmd_lock);
 	while (1) {
 		*seq_ptr = cpu_to_le16(seq);
-		rc = _hwrm_send_message(bp, msg, msg_len,
-					HWRM_COREDUMP_TIMEOUT);
+		rc = hwrm_req_send(bp, msg);
 		if (rc)
 			break;
 
@@ -3633,26 +3680,27 @@ static int bnxt_hwrm_dbg_dma_data(struct bnxt *bp, void *msg, int msg_len,
 		seq++;
 		off += len;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	dma_free_coherent(&bp->pdev->dev, info->dma_len, dma_buf, dma_handle);
+	hwrm_req_drop(bp, msg);
 	return rc;
 }
 
 static int bnxt_hwrm_dbg_coredump_list(struct bnxt *bp,
 				       struct bnxt_coredump *coredump)
 {
-	struct hwrm_dbg_coredump_list_input req = {0};
 	struct bnxt_hwrm_dbg_dma_info info = {NULL};
+	struct hwrm_dbg_coredump_list_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_DBG_COREDUMP_LIST, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_DBG_COREDUMP_LIST);
+	if (rc)
+		return rc;
 
 	info.dma_len = COREDUMP_LIST_BUF_LEN;
 	info.seq_off = offsetof(struct hwrm_dbg_coredump_list_input, seq_no);
 	info.data_len_off = offsetof(struct hwrm_dbg_coredump_list_output,
 				     data_len);
 
-	rc = bnxt_hwrm_dbg_dma_data(bp, &req, sizeof(req), &info);
+	rc = bnxt_hwrm_dbg_dma_data(bp, req, &info);
 	if (!rc) {
 		coredump->data = info.dest_buf;
 		coredump->data_size = info.dest_buf_size;
@@ -3664,26 +3712,34 @@ static int bnxt_hwrm_dbg_coredump_list(struct bnxt *bp,
 static int bnxt_hwrm_dbg_coredump_initiate(struct bnxt *bp, u16 component_id,
 					   u16 segment_id)
 {
-	struct hwrm_dbg_coredump_initiate_input req = {0};
+	struct hwrm_dbg_coredump_initiate_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_DBG_COREDUMP_INITIATE);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_DBG_COREDUMP_INITIATE, -1, -1);
-	req.component_id = cpu_to_le16(component_id);
-	req.segment_id = cpu_to_le16(segment_id);
+	hwrm_req_timeout(bp, req, HWRM_COREDUMP_TIMEOUT);
+	req->component_id = cpu_to_le16(component_id);
+	req->segment_id = cpu_to_le16(segment_id);
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_COREDUMP_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_hwrm_dbg_coredump_retrieve(struct bnxt *bp, u16 component_id,
 					   u16 segment_id, u32 *seg_len,
 					   void *buf, u32 buf_len, u32 offset)
 {
-	struct hwrm_dbg_coredump_retrieve_input req = {0};
+	struct hwrm_dbg_coredump_retrieve_input *req;
 	struct bnxt_hwrm_dbg_dma_info info = {NULL};
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_DBG_COREDUMP_RETRIEVE, -1, -1);
-	req.component_id = cpu_to_le16(component_id);
-	req.segment_id = cpu_to_le16(segment_id);
+	rc = hwrm_req_init(bp, req, HWRM_DBG_COREDUMP_RETRIEVE);
+	if (rc)
+		return rc;
+
+	req->component_id = cpu_to_le16(component_id);
+	req->segment_id = cpu_to_le16(segment_id);
 
 	info.dma_len = COREDUMP_RETRIEVE_BUF_LEN;
 	info.seq_off = offsetof(struct hwrm_dbg_coredump_retrieve_input,
@@ -3696,7 +3752,7 @@ static int bnxt_hwrm_dbg_coredump_retrieve(struct bnxt *bp, u16 component_id,
 		info.seg_start = offset;
 	}
 
-	rc = bnxt_hwrm_dbg_dma_data(bp, &req, sizeof(req), &info);
+	rc = bnxt_hwrm_dbg_dma_data(bp, req, &info);
 	if (!rc)
 		*seg_len = info.dest_buf_size;
 
@@ -3975,8 +4031,8 @@ static int bnxt_get_ts_info(struct net_device *dev,
 
 void bnxt_ethtool_init(struct bnxt *bp)
 {
-	struct hwrm_selftest_qlist_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_selftest_qlist_input req = {0};
+	struct hwrm_selftest_qlist_output *resp;
+	struct hwrm_selftest_qlist_input *req;
 	struct bnxt_test_info *test_info;
 	struct net_device *dev = bp->dev;
 	int i, rc;
@@ -3988,19 +4044,22 @@ void bnxt_ethtool_init(struct bnxt *bp)
 	if (bp->hwrm_spec_code < 0x10704 || !BNXT_PF(bp))
 		return;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_SELFTEST_QLIST, -1, -1);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		goto ethtool_init_exit;
-
 	test_info = bp->test_info;
-	if (!test_info)
+	if (!test_info) {
 		test_info = kzalloc(sizeof(*bp->test_info), GFP_KERNEL);
-	if (!test_info)
+		if (!test_info)
+			return;
+		bp->test_info = test_info;
+	}
+
+	if (hwrm_req_init(bp, req, HWRM_SELFTEST_QLIST))
+		return;
+
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
+	if (rc)
 		goto ethtool_init_exit;
 
-	bp->test_info = test_info;
 	bp->num_tests = resp->num_tests + BNXT_DRV_TESTS;
 	if (bp->num_tests > BNXT_MAX_TEST)
 		bp->num_tests = BNXT_MAX_TEST;
@@ -4034,7 +4093,7 @@ void bnxt_ethtool_init(struct bnxt *bp)
 	}
 
 ethtool_init_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 }
 
 static void bnxt_get_eth_phy_stats(struct net_device *dev,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
index 4cc2379027cf..f0aa480799ca 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
@@ -86,24 +86,28 @@ static void bnxt_ptp_get_current_time(struct bnxt *bp)
 
 static int bnxt_hwrm_port_ts_query(struct bnxt *bp, u32 flags, u64 *ts)
 {
-	struct hwrm_port_ts_query_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_port_ts_query_input req = {0};
+	struct hwrm_port_ts_query_output *resp;
+	struct hwrm_port_ts_query_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_TS_QUERY, -1, -1);
-	req.flags = cpu_to_le32(flags);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_TS_QUERY);
+	if (rc)
+		return rc;
+
+	req->flags = cpu_to_le32(flags);
 	if ((flags & PORT_TS_QUERY_REQ_FLAGS_PATH) ==
 	    PORT_TS_QUERY_REQ_FLAGS_PATH_TX) {
-		req.enables = cpu_to_le16(BNXT_PTP_QTS_TX_ENABLES);
-		req.ptp_seq_id = cpu_to_le32(bp->ptp_cfg->tx_seqid);
-		req.ptp_hdr_offset = cpu_to_le16(bp->ptp_cfg->tx_hdr_off);
-		req.ts_req_timeout = cpu_to_le16(BNXT_PTP_QTS_TIMEOUT);
+		req->enables = cpu_to_le16(BNXT_PTP_QTS_TX_ENABLES);
+		req->ptp_seq_id = cpu_to_le32(bp->ptp_cfg->tx_seqid);
+		req->ptp_hdr_offset = cpu_to_le16(bp->ptp_cfg->tx_hdr_off);
+		req->ts_req_timeout = cpu_to_le16(BNXT_PTP_QTS_TIMEOUT);
 	}
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+
+	rc = hwrm_req_send(bp, req);
 	if (!rc)
 		*ts = le64_to_cpu(resp->ptp_msg_ts);
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -144,14 +148,17 @@ static int bnxt_ptp_adjfreq(struct ptp_clock_info *ptp_info, s32 ppb)
 {
 	struct bnxt_ptp_cfg *ptp = container_of(ptp_info, struct bnxt_ptp_cfg,
 						ptp_info);
-	struct hwrm_port_mac_cfg_input req = {0};
+	struct hwrm_port_mac_cfg_input *req;
 	struct bnxt *bp = ptp->bp;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_MAC_CFG, -1, -1);
-	req.ptp_freq_adj_ppb = cpu_to_le32(ppb);
-	req.enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_PTP_FREQ_ADJ_PPB);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_PORT_MAC_CFG);
+	if (rc)
+		return rc;
+
+	req->ptp_freq_adj_ppb = cpu_to_le32(ppb);
+	req->enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_PTP_FREQ_ADJ_PPB);
+	rc = hwrm_req_send(ptp->bp, req);
 	if (rc)
 		netdev_err(ptp->bp->dev,
 			   "ptp adjfreq failed. rc = %d\n", rc);
@@ -187,7 +194,7 @@ void bnxt_ptp_pps_event(struct bnxt *bp, u32 data1, u32 data2)
 
 static int bnxt_ptp_cfg_pin(struct bnxt *bp, u8 pin, u8 usage)
 {
-	struct hwrm_func_ptp_pin_cfg_input req = {0};
+	struct hwrm_func_ptp_pin_cfg_input *req;
 	struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
 	u8 state = usage != BNXT_PPS_PIN_NONE;
 	u8 *pin_state, *pin_usg;
@@ -199,18 +206,21 @@ static int bnxt_ptp_cfg_pin(struct bnxt *bp, u8 pin, u8 usage)
 		return -EOPNOTSUPP;
 	}
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_PTP_PIN_CFG, -1, -1);
+	rc = hwrm_req_init(ptp->bp, req, HWRM_FUNC_PTP_PIN_CFG);
+	if (rc)
+		return rc;
+
 	enables = (FUNC_PTP_PIN_CFG_REQ_ENABLES_PIN0_STATE |
 		   FUNC_PTP_PIN_CFG_REQ_ENABLES_PIN0_USAGE) << (pin * 2);
-	req.enables = cpu_to_le32(enables);
+	req->enables = cpu_to_le32(enables);
 
-	pin_state = &req.pin0_state;
-	pin_usg = &req.pin0_usage;
+	pin_state = &req->pin0_state;
+	pin_usg = &req->pin0_usage;
 
 	*(pin_state + (pin * 2)) = state;
 	*(pin_usg + (pin * 2)) = usage;
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send(ptp->bp, req);
 	if (rc)
 		return rc;
 
@@ -222,12 +232,16 @@ static int bnxt_ptp_cfg_pin(struct bnxt *bp, u8 pin, u8 usage)
 
 static int bnxt_ptp_cfg_event(struct bnxt *bp, u8 event)
 {
-	struct hwrm_func_ptp_cfg_input req = {0};
+	struct hwrm_func_ptp_cfg_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_PTP_CFG);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_PTP_CFG, -1, -1);
-	req.enables = cpu_to_le16(FUNC_PTP_CFG_REQ_ENABLES_PTP_PPS_EVENT);
-	req.ptp_pps_event = event;
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->enables = cpu_to_le16(FUNC_PTP_CFG_REQ_ENABLES_PTP_PPS_EVENT);
+	req->ptp_pps_event = event;
+	return hwrm_req_send(bp, req);
 }
 
 void bnxt_ptp_reapply_pps(struct bnxt *bp)
@@ -278,7 +292,7 @@ static int bnxt_get_target_cycles(struct bnxt_ptp_cfg *ptp, u64 target_ns,
 static int bnxt_ptp_perout_cfg(struct bnxt_ptp_cfg *ptp,
 			       struct ptp_clock_request *rq)
 {
-	struct hwrm_func_ptp_cfg_input req = {0};
+	struct hwrm_func_ptp_cfg_input *req;
 	struct bnxt *bp = ptp->bp;
 	struct timespec64 ts;
 	u64 target_ns, delta;
@@ -293,20 +307,22 @@ static int bnxt_ptp_perout_cfg(struct bnxt_ptp_cfg *ptp,
 	if (rc)
 		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_PTP_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_PTP_CFG);
+	if (rc)
+		return rc;
 
 	enables = FUNC_PTP_CFG_REQ_ENABLES_PTP_FREQ_ADJ_EXT_PERIOD |
 		  FUNC_PTP_CFG_REQ_ENABLES_PTP_FREQ_ADJ_EXT_UP |
 		  FUNC_PTP_CFG_REQ_ENABLES_PTP_FREQ_ADJ_EXT_PHASE;
-	req.enables = cpu_to_le16(enables);
-	req.ptp_pps_event = 0;
-	req.ptp_freq_adj_dll_source = 0;
-	req.ptp_freq_adj_dll_phase = 0;
-	req.ptp_freq_adj_ext_period = cpu_to_le32(NSEC_PER_SEC);
-	req.ptp_freq_adj_ext_up = 0;
-	req.ptp_freq_adj_ext_phase_lower = cpu_to_le32(delta);
-
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->enables = cpu_to_le16(enables);
+	req->ptp_pps_event = 0;
+	req->ptp_freq_adj_dll_source = 0;
+	req->ptp_freq_adj_dll_phase = 0;
+	req->ptp_freq_adj_ext_period = cpu_to_le32(NSEC_PER_SEC);
+	req->ptp_freq_adj_ext_up = 0;
+	req->ptp_freq_adj_ext_phase_lower = cpu_to_le32(delta);
+
+	return hwrm_req_send(bp, req);
 }
 
 static int bnxt_ptp_enable(struct ptp_clock_info *ptp_info,
@@ -363,11 +379,15 @@ static int bnxt_ptp_enable(struct ptp_clock_info *ptp_info,
 
 static int bnxt_hwrm_ptp_cfg(struct bnxt *bp)
 {
-	struct hwrm_port_mac_cfg_input req = {0};
 	struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+	struct hwrm_port_mac_cfg_input *req;
 	u32 flags = 0;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_PORT_MAC_CFG);
+	if (rc)
+		return rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_MAC_CFG, -1, -1);
 	if (ptp->rx_filter)
 		flags |= PORT_MAC_CFG_REQ_FLAGS_PTP_RX_TS_CAPTURE_ENABLE;
 	else
@@ -376,11 +396,11 @@ static int bnxt_hwrm_ptp_cfg(struct bnxt *bp)
 		flags |= PORT_MAC_CFG_REQ_FLAGS_PTP_TX_TS_CAPTURE_ENABLE;
 	else
 		flags |= PORT_MAC_CFG_REQ_FLAGS_PTP_TX_TS_CAPTURE_DISABLE;
-	req.flags = cpu_to_le32(flags);
-	req.enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_RX_TS_CAPTURE_PTP_MSG_TYPE);
-	req.rx_ts_capture_ptp_msg_type = cpu_to_le16(ptp->rxctl);
+	req->flags = cpu_to_le32(flags);
+	req->enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_RX_TS_CAPTURE_PTP_MSG_TYPE);
+	req->rx_ts_capture_ptp_msg_type = cpu_to_le16(ptp->rxctl);
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
@@ -631,11 +651,10 @@ static int bnxt_ptp_verify(struct ptp_clock_info *ptp_info, unsigned int pin,
 		return -EOPNOTSUPP;
 }
 
-/* bp->hwrm_cmd_lock held by the caller */
 static int bnxt_ptp_pps_init(struct bnxt *bp)
 {
-	struct hwrm_func_ptp_pin_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_ptp_pin_qcfg_input req = {0};
+	struct hwrm_func_ptp_pin_qcfg_output *resp;
+	struct hwrm_func_ptp_pin_qcfg_input *req;
 	struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
 	struct ptp_clock_info *ptp_info;
 	struct bnxt_pps *pps_info;
@@ -643,11 +662,16 @@ static int bnxt_ptp_pps_init(struct bnxt *bp)
 	u32 i, rc;
 
 	/* Query current/default PIN CFG */
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_PTP_PIN_QCFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_PTP_PIN_QCFG);
+	if (rc)
+		return rc;
 
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc || !resp->num_pins)
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	if (rc || !resp->num_pins) {
+		hwrm_req_drop(bp, req);
 		return -EOPNOTSUPP;
+	}
 
 	ptp_info = &ptp->ptp_info;
 	pps_info = &ptp->pps_info;
@@ -656,8 +680,10 @@ static int bnxt_ptp_pps_init(struct bnxt *bp)
 	ptp_info->pin_config = kcalloc(ptp_info->n_pins,
 				       sizeof(*ptp_info->pin_config),
 				       GFP_KERNEL);
-	if (!ptp_info->pin_config)
+	if (!ptp_info->pin_config) {
+		hwrm_req_drop(bp, req);
 		return -ENOMEM;
+	}
 
 	/* Report the TSIO capability to kernel */
 	pin_usg = &resp->pin0_usage;
@@ -675,6 +701,7 @@ static int bnxt_ptp_pps_init(struct bnxt *bp)
 
 		pps_info->pins[i].usage = *pin_usg;
 	}
+	hwrm_req_drop(bp, req);
 
 	/* Only 1 each of ext_ts and per_out pins is available in HW */
 	ptp_info->n_ext_ts = 1;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index 07e8e9f657e4..70d8ca3039dc 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -27,21 +27,26 @@
 static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
 					  struct bnxt_vf_info *vf, u16 event_id)
 {
-	struct hwrm_fwd_async_event_cmpl_input req = {0};
+	struct hwrm_fwd_async_event_cmpl_input *req;
 	struct hwrm_async_event_cmpl *async_cmpl;
 	int rc = 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FWD_ASYNC_EVENT_CMPL);
+	if (rc)
+		goto exit;
+
 	if (vf)
-		req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
+		req->encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
 	else
 		/* broadcast this async event to all VFs */
-		req.encap_async_event_target_id = cpu_to_le16(0xffff);
-	async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
+		req->encap_async_event_target_id = cpu_to_le16(0xffff);
+	async_cmpl =
+		(struct hwrm_async_event_cmpl *)req->encap_async_event_cmpl;
 	async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
 	async_cmpl->event_id = cpu_to_le16(event_id);
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_send(bp, req);
+exit:
 	if (rc)
 		netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
 			   rc);
@@ -63,10 +68,10 @@ static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
 
 int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
 {
-	struct hwrm_func_cfg_input req = {0};
 	struct bnxt *bp = netdev_priv(dev);
-	struct bnxt_vf_info *vf;
+	struct hwrm_func_cfg_input *req;
 	bool old_setting = false;
+	struct bnxt_vf_info *vf;
 	u32 func_flags;
 	int rc;
 
@@ -90,36 +95,38 @@ int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
 	/*TODO: if the driver supports VLAN filter on guest VLAN,
 	 * the spoof check should also include vlan anti-spoofing
 	 */
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(vf->fw_fid);
-	req.flags = cpu_to_le32(func_flags);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
 	if (!rc) {
-		if (setting)
-			vf->flags |= BNXT_VF_SPOOFCHK;
-		else
-			vf->flags &= ~BNXT_VF_SPOOFCHK;
+		req->fid = cpu_to_le16(vf->fw_fid);
+		req->flags = cpu_to_le32(func_flags);
+		rc = hwrm_req_send(bp, req);
+		if (!rc) {
+			if (setting)
+				vf->flags |= BNXT_VF_SPOOFCHK;
+			else
+				vf->flags &= ~BNXT_VF_SPOOFCHK;
+		}
 	}
 	return rc;
 }
 
 static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
 {
-	struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_qcfg_input req = {0};
+	struct hwrm_func_qcfg_output *resp;
+	struct hwrm_func_qcfg_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
-	req.fid = cpu_to_le16(BNXT_PF(bp) ? vf->fw_fid : 0xffff);
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc) {
-		mutex_unlock(&bp->hwrm_cmd_lock);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
+	if (rc)
 		return rc;
-	}
-	vf->func_qcfg_flags = le16_to_cpu(resp->flags);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return 0;
+
+	req->fid = cpu_to_le16(BNXT_PF(bp) ? vf->fw_fid : 0xffff);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	if (!rc)
+		vf->func_qcfg_flags = le16_to_cpu(resp->flags);
+	hwrm_req_drop(bp, req);
+	return rc;
 }
 
 bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
@@ -133,18 +140,22 @@ bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
 
 static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
 {
-	struct hwrm_func_cfg_input req = {0};
+	struct hwrm_func_cfg_input *req;
+	int rc;
 
 	if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(vf->fw_fid);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (rc)
+		return rc;
+
+	req->fid = cpu_to_le16(vf->fw_fid);
 	if (vf->flags & BNXT_VF_TRUST)
-		req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
+		req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
 	else
-		req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
+	return hwrm_req_send(bp, req);
 }
 
 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
@@ -204,8 +215,8 @@ int bnxt_get_vf_config(struct net_device *dev, int vf_id,
 
 int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
 {
-	struct hwrm_func_cfg_input req = {0};
 	struct bnxt *bp = netdev_priv(dev);
+	struct hwrm_func_cfg_input *req;
 	struct bnxt_vf_info *vf;
 	int rc;
 
@@ -221,19 +232,23 @@ int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
 	}
 	vf = &bp->pf.vf[vf_id];
 
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (rc)
+		return rc;
+
 	memcpy(vf->mac_addr, mac, ETH_ALEN);
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(vf->fw_fid);
-	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
-	memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+	req->fid = cpu_to_le16(vf->fw_fid);
+	req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
+	memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
+	return hwrm_req_send(bp, req);
 }
 
 int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
 		     __be16 vlan_proto)
 {
-	struct hwrm_func_cfg_input req = {0};
 	struct bnxt *bp = netdev_priv(dev);
+	struct hwrm_func_cfg_input *req;
 	struct bnxt_vf_info *vf;
 	u16 vlan_tag;
 	int rc;
@@ -259,21 +274,23 @@ int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
 	if (vlan_tag == vf->vlan)
 		return 0;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(vf->fw_fid);
-	req.dflt_vlan = cpu_to_le16(vlan_tag);
-	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc)
-		vf->vlan = vlan_tag;
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (!rc) {
+		req->fid = cpu_to_le16(vf->fw_fid);
+		req->dflt_vlan = cpu_to_le16(vlan_tag);
+		req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
+		rc = hwrm_req_send(bp, req);
+		if (!rc)
+			vf->vlan = vlan_tag;
+	}
 	return rc;
 }
 
 int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
 		   int max_tx_rate)
 {
-	struct hwrm_func_cfg_input req = {0};
 	struct bnxt *bp = netdev_priv(dev);
+	struct hwrm_func_cfg_input *req;
 	struct bnxt_vf_info *vf;
 	u32 pf_link_speed;
 	int rc;
@@ -297,16 +314,18 @@ int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
 	}
 	if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
 		return 0;
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(vf->fw_fid);
-	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
-	req.max_bw = cpu_to_le32(max_tx_rate);
-	req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
-	req.min_bw = cpu_to_le32(min_tx_rate);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
 	if (!rc) {
-		vf->min_tx_rate = min_tx_rate;
-		vf->max_tx_rate = max_tx_rate;
+		req->fid = cpu_to_le16(vf->fw_fid);
+		req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
+					   FUNC_CFG_REQ_ENABLES_MIN_BW);
+		req->max_bw = cpu_to_le32(max_tx_rate);
+		req->min_bw = cpu_to_le32(min_tx_rate);
+		rc = hwrm_req_send(bp, req);
+		if (!rc) {
+			vf->min_tx_rate = min_tx_rate;
+			vf->max_tx_rate = max_tx_rate;
+		}
 	}
 	return rc;
 }
@@ -359,21 +378,22 @@ static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
 
 static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
 {
-	int i, rc = 0;
+	struct hwrm_func_vf_resc_free_input *req;
 	struct bnxt_pf_info *pf = &bp->pf;
-	struct hwrm_func_vf_resc_free_input req = {0};
+	int i, rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESC_FREE);
+	if (rc)
+		return rc;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	hwrm_req_hold(bp, req);
 	for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
-		req.vf_id = cpu_to_le16(i);
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		req->vf_id = cpu_to_le16(i);
+		rc = hwrm_req_send(bp, req);
 		if (rc)
 			break;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -447,51 +467,55 @@ static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
 
 static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
 {
-	struct hwrm_func_buf_rgtr_input req = {0};
+	struct hwrm_func_buf_rgtr_input *req;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_BUF_RGTR);
+	if (rc)
+		return rc;
 
-	req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
-	req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
-	req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
-	req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
-	req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
-	req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
-	req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
+	req->req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
+	req->req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
+	req->req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
+	req->req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
+	req->req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
+	req->req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
+	req->req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
 
-	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
-/* Caller holds bp->hwrm_cmd_lock mutex lock */
-static void __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
+static int __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
 {
-	struct hwrm_func_cfg_input req = {0};
+	struct hwrm_func_cfg_input *req;
 	struct bnxt_vf_info *vf;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (rc)
+		return rc;
 
 	vf = &bp->pf.vf[vf_id];
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
-	req.fid = cpu_to_le16(vf->fw_fid);
+	req->fid = cpu_to_le16(vf->fw_fid);
 
 	if (is_valid_ether_addr(vf->mac_addr)) {
-		req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
-		memcpy(req.dflt_mac_addr, vf->mac_addr, ETH_ALEN);
+		req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
+		memcpy(req->dflt_mac_addr, vf->mac_addr, ETH_ALEN);
 	}
 	if (vf->vlan) {
-		req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
-		req.dflt_vlan = cpu_to_le16(vf->vlan);
+		req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
+		req->dflt_vlan = cpu_to_le16(vf->vlan);
 	}
 	if (vf->max_tx_rate) {
-		req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
-		req.max_bw = cpu_to_le32(vf->max_tx_rate);
-#ifdef HAVE_IFLA_TX_RATE
-		req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
-		req.min_bw = cpu_to_le32(vf->min_tx_rate);
-#endif
+		req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
+					    FUNC_CFG_REQ_ENABLES_MIN_BW);
+		req->max_bw = cpu_to_le32(vf->max_tx_rate);
+		req->min_bw = cpu_to_le32(vf->min_tx_rate);
 	}
 	if (vf->flags & BNXT_VF_TRUST)
-		req.flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
+		req->flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
 
-	_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return hwrm_req_send(bp, req);
 }
 
 /* Only called by PF to reserve resources for VFs, returns actual number of
@@ -499,7 +523,7 @@ static void __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
  */
 static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
 {
-	struct hwrm_func_vf_resource_cfg_input req = {0};
+	struct hwrm_func_vf_resource_cfg_input *req;
 	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 	u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
 	u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
@@ -508,7 +532,9 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
 	u16 vf_msix = 0;
 	u16 vf_rss;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESOURCE_CFG);
+	if (rc)
+		return rc;
 
 	if (bp->flags & BNXT_FLAG_CHIP_P5) {
 		vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
@@ -527,21 +553,21 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
 	vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 	vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
 
-	req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
+	req->min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
 	if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
 		min = 0;
-		req.min_rsscos_ctx = cpu_to_le16(min);
+		req->min_rsscos_ctx = cpu_to_le16(min);
 	}
 	if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
 	    pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
-		req.min_cmpl_rings = cpu_to_le16(min);
-		req.min_tx_rings = cpu_to_le16(min);
-		req.min_rx_rings = cpu_to_le16(min);
-		req.min_l2_ctxs = cpu_to_le16(min);
-		req.min_vnics = cpu_to_le16(min);
-		req.min_stat_ctx = cpu_to_le16(min);
+		req->min_cmpl_rings = cpu_to_le16(min);
+		req->min_tx_rings = cpu_to_le16(min);
+		req->min_rx_rings = cpu_to_le16(min);
+		req->min_l2_ctxs = cpu_to_le16(min);
+		req->min_vnics = cpu_to_le16(min);
+		req->min_stat_ctx = cpu_to_le16(min);
 		if (!(bp->flags & BNXT_FLAG_CHIP_P5))
-			req.min_hw_ring_grps = cpu_to_le16(min);
+			req->min_hw_ring_grps = cpu_to_le16(min);
 	} else {
 		vf_cp_rings /= num_vfs;
 		vf_tx_rings /= num_vfs;
@@ -551,56 +577,57 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
 		vf_ring_grps /= num_vfs;
 		vf_rss /= num_vfs;
 
-		req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
-		req.min_tx_rings = cpu_to_le16(vf_tx_rings);
-		req.min_rx_rings = cpu_to_le16(vf_rx_rings);
-		req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
-		req.min_vnics = cpu_to_le16(vf_vnics);
-		req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
-		req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
-		req.min_rsscos_ctx = cpu_to_le16(vf_rss);
+		req->min_cmpl_rings = cpu_to_le16(vf_cp_rings);
+		req->min_tx_rings = cpu_to_le16(vf_tx_rings);
+		req->min_rx_rings = cpu_to_le16(vf_rx_rings);
+		req->min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
+		req->min_vnics = cpu_to_le16(vf_vnics);
+		req->min_stat_ctx = cpu_to_le16(vf_stat_ctx);
+		req->min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
+		req->min_rsscos_ctx = cpu_to_le16(vf_rss);
 	}
-	req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
-	req.max_tx_rings = cpu_to_le16(vf_tx_rings);
-	req.max_rx_rings = cpu_to_le16(vf_rx_rings);
-	req.max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
-	req.max_vnics = cpu_to_le16(vf_vnics);
-	req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
-	req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
-	req.max_rsscos_ctx = cpu_to_le16(vf_rss);
+	req->max_cmpl_rings = cpu_to_le16(vf_cp_rings);
+	req->max_tx_rings = cpu_to_le16(vf_tx_rings);
+	req->max_rx_rings = cpu_to_le16(vf_rx_rings);
+	req->max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
+	req->max_vnics = cpu_to_le16(vf_vnics);
+	req->max_stat_ctx = cpu_to_le16(vf_stat_ctx);
+	req->max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
+	req->max_rsscos_ctx = cpu_to_le16(vf_rss);
 	if (bp->flags & BNXT_FLAG_CHIP_P5)
-		req.max_msix = cpu_to_le16(vf_msix / num_vfs);
+		req->max_msix = cpu_to_le16(vf_msix / num_vfs);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	hwrm_req_hold(bp, req);
 	for (i = 0; i < num_vfs; i++) {
 		if (reset)
 			__bnxt_set_vf_params(bp, i);
 
-		req.vf_id = cpu_to_le16(pf->first_vf_id + i);
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		req->vf_id = cpu_to_le16(pf->first_vf_id + i);
+		rc = hwrm_req_send(bp, req);
 		if (rc)
 			break;
 		pf->active_vfs = i + 1;
 		pf->vf[i].fw_fid = pf->first_vf_id + i;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+
 	if (pf->active_vfs) {
 		u16 n = pf->active_vfs;
 
-		hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
-		hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
-		hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
-					     n;
-		hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
-		hw_resc->max_rsscos_ctxs -= le16_to_cpu(req.min_rsscos_ctx) * n;
-		hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
-		hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
+		hw_resc->max_tx_rings -= le16_to_cpu(req->min_tx_rings) * n;
+		hw_resc->max_rx_rings -= le16_to_cpu(req->min_rx_rings) * n;
+		hw_resc->max_hw_ring_grps -=
+			le16_to_cpu(req->min_hw_ring_grps) * n;
+		hw_resc->max_cp_rings -= le16_to_cpu(req->min_cmpl_rings) * n;
+		hw_resc->max_rsscos_ctxs -=
+			le16_to_cpu(req->min_rsscos_ctx) * n;
+		hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
+		hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
 		if (bp->flags & BNXT_FLAG_CHIP_P5)
 			hw_resc->max_irqs -= vf_msix * n;
 
 		rc = pf->active_vfs;
 	}
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -609,15 +636,18 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
  */
 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 {
-	u32 rc = 0, mtu, i;
 	u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
 	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
-	struct hwrm_func_cfg_input req = {0};
 	struct bnxt_pf_info *pf = &bp->pf;
+	struct hwrm_func_cfg_input *req;
 	int total_vf_tx_rings = 0;
 	u16 vf_ring_grps;
+	u32 mtu, i;
+	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
+	if (rc)
+		return rc;
 
 	/* Remaining rings are distributed equally amongs VF's for now */
 	vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
@@ -633,50 +663,49 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 	vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
 	vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 
-	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
-				  FUNC_CFG_REQ_ENABLES_MRU |
-				  FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
-				  FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
-				  FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
-				  FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
-				  FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
-				  FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
-				  FUNC_CFG_REQ_ENABLES_NUM_VNICS |
-				  FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
+	req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
+				   FUNC_CFG_REQ_ENABLES_MRU |
+				   FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
+				   FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
+				   FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
+				   FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
+				   FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
+				   FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
+				   FUNC_CFG_REQ_ENABLES_NUM_VNICS |
+				   FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
 
 	mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
-	req.mru = cpu_to_le16(mtu);
-	req.admin_mtu = cpu_to_le16(mtu);
+	req->mru = cpu_to_le16(mtu);
+	req->admin_mtu = cpu_to_le16(mtu);
 
-	req.num_rsscos_ctxs = cpu_to_le16(1);
-	req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
-	req.num_tx_rings = cpu_to_le16(vf_tx_rings);
-	req.num_rx_rings = cpu_to_le16(vf_rx_rings);
-	req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
-	req.num_l2_ctxs = cpu_to_le16(4);
+	req->num_rsscos_ctxs = cpu_to_le16(1);
+	req->num_cmpl_rings = cpu_to_le16(vf_cp_rings);
+	req->num_tx_rings = cpu_to_le16(vf_tx_rings);
+	req->num_rx_rings = cpu_to_le16(vf_rx_rings);
+	req->num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
+	req->num_l2_ctxs = cpu_to_le16(4);
 
-	req.num_vnics = cpu_to_le16(vf_vnics);
+	req->num_vnics = cpu_to_le16(vf_vnics);
 	/* FIXME spec currently uses 1 bit for stats ctx */
-	req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
+	req->num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
+	hwrm_req_hold(bp, req);
 	for (i = 0; i < num_vfs; i++) {
 		int vf_tx_rsvd = vf_tx_rings;
 
-		req.fid = cpu_to_le16(pf->first_vf_id + i);
-		rc = _hwrm_send_message(bp, &req, sizeof(req),
-					HWRM_CMD_TIMEOUT);
+		req->fid = cpu_to_le16(pf->first_vf_id + i);
+		rc = hwrm_req_send(bp, req);
 		if (rc)
 			break;
 		pf->active_vfs = i + 1;
-		pf->vf[i].fw_fid = le16_to_cpu(req.fid);
+		pf->vf[i].fw_fid = le16_to_cpu(req->fid);
 		rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
 					      &vf_tx_rsvd);
 		if (rc)
 			break;
 		total_vf_tx_rings += vf_tx_rsvd;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	if (pf->active_vfs) {
 		hw_resc->max_tx_rings -= total_vf_tx_rings;
 		hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
@@ -894,23 +923,24 @@ static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 			      void *encap_resp, __le64 encap_resp_addr,
 			      __le16 encap_resp_cpr, u32 msg_size)
 {
-	int rc = 0;
-	struct hwrm_fwd_resp_input req = {0};
+	struct hwrm_fwd_resp_input *req;
+	int rc;
 
 	if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
 		return -EINVAL;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
-
-	/* Set the new target id */
-	req.target_id = cpu_to_le16(vf->fw_fid);
-	req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
-	req.encap_resp_len = cpu_to_le16(msg_size);
-	req.encap_resp_addr = encap_resp_addr;
-	req.encap_resp_cmpl_ring = encap_resp_cpr;
-	memcpy(req.encap_resp, encap_resp, msg_size);
-
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_FWD_RESP);
+	if (!rc) {
+		/* Set the new target id */
+		req->target_id = cpu_to_le16(vf->fw_fid);
+		req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
+		req->encap_resp_len = cpu_to_le16(msg_size);
+		req->encap_resp_addr = encap_resp_addr;
+		req->encap_resp_cmpl_ring = encap_resp_cpr;
+		memcpy(req->encap_resp, encap_resp, msg_size);
+
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
 	return rc;
@@ -919,19 +949,21 @@ static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 				  u32 msg_size)
 {
-	int rc = 0;
-	struct hwrm_reject_fwd_resp_input req = {0};
+	struct hwrm_reject_fwd_resp_input *req;
+	int rc;
 
 	if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
 		return -EINVAL;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
-	/* Set the new target id */
-	req.target_id = cpu_to_le16(vf->fw_fid);
-	req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
-	memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
+	rc = hwrm_req_init(bp, req, HWRM_REJECT_FWD_RESP);
+	if (!rc) {
+		/* Set the new target id */
+		req->target_id = cpu_to_le16(vf->fw_fid);
+		req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
+		memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
 	return rc;
@@ -940,19 +972,21 @@ static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 				   u32 msg_size)
 {
-	int rc = 0;
-	struct hwrm_exec_fwd_resp_input req = {0};
+	struct hwrm_exec_fwd_resp_input *req;
+	int rc;
 
 	if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
 		return -EINVAL;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
-	/* Set the new target id */
-	req.target_id = cpu_to_le16(vf->fw_fid);
-	req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
-	memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
+	rc = hwrm_req_init(bp, req, HWRM_EXEC_FWD_RESP);
+	if (!rc) {
+		/* Set the new target id */
+		req->target_id = cpu_to_le16(vf->fw_fid);
+		req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
+		memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
 	return rc;
@@ -1119,7 +1153,7 @@ void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
 
 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
 {
-	struct hwrm_func_vf_cfg_input req = {0};
+	struct hwrm_func_vf_cfg_input *req;
 	int rc = 0;
 
 	if (!BNXT_VF(bp))
@@ -1130,10 +1164,16 @@ int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
 			rc = -EADDRNOTAVAIL;
 		goto mac_done;
 	}
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
-	req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
-	memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
+	if (rc)
+		goto mac_done;
+
+	req->enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
+	memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
+	if (!strict)
+		hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
+	rc = hwrm_req_send(bp, req);
 mac_done:
 	if (rc && strict) {
 		rc = -EADDRNOTAVAIL;
@@ -1146,15 +1186,17 @@ int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
 
 void bnxt_update_vf_mac(struct bnxt *bp)
 {
-	struct hwrm_func_qcaps_input req = {0};
-	struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_func_qcaps_output *resp;
+	struct hwrm_func_qcaps_input *req;
 	bool inform_pf = false;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
-	req.fid = cpu_to_le16(0xffff);
+	if (hwrm_req_init(bp, req, HWRM_FUNC_QCAPS))
+		return;
+
+	req->fid = cpu_to_le16(0xffff);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
+	resp = hwrm_req_hold(bp, req);
+	if (hwrm_req_send(bp, req))
 		goto update_vf_mac_exit;
 
 	/* Store MAC address from the firmware.  There are 2 cases:
@@ -1177,7 +1219,7 @@ void bnxt_update_vf_mac(struct bnxt *bp)
 	if (is_valid_ether_addr(bp->vf.mac_addr))
 		memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
 update_vf_mac_exit:
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	if (inform_pf)
 		bnxt_approve_mac(bp, bp->dev->dev_addr, false);
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
index c0c3cc426f7b..46fae1acbeed 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
@@ -503,16 +503,18 @@ static int bnxt_tc_parse_flow(struct bnxt *bp,
 static int bnxt_hwrm_cfa_flow_free(struct bnxt *bp,
 				   struct bnxt_tc_flow_node *flow_node)
 {
-	struct hwrm_cfa_flow_free_input req = { 0 };
+	struct hwrm_cfa_flow_free_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_FLOW_FREE, -1, -1);
-	if (bp->fw_cap & BNXT_FW_CAP_OVS_64BIT_HANDLE)
-		req.ext_flow_handle = flow_node->ext_flow_handle;
-	else
-		req.flow_handle = flow_node->flow_handle;
+	rc = hwrm_req_init(bp, req, HWRM_CFA_FLOW_FREE);
+	if (!rc) {
+		if (bp->fw_cap & BNXT_FW_CAP_OVS_64BIT_HANDLE)
+			req->ext_flow_handle = flow_node->ext_flow_handle;
+		else
+			req->flow_handle = flow_node->flow_handle;
 
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d\n", __func__, rc);
 
@@ -588,20 +590,22 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 	struct bnxt_tc_actions *actions = &flow->actions;
 	struct bnxt_tc_l3_key *l3_mask = &flow->l3_mask;
 	struct bnxt_tc_l3_key *l3_key = &flow->l3_key;
-	struct hwrm_cfa_flow_alloc_input req = { 0 };
 	struct hwrm_cfa_flow_alloc_output *resp;
+	struct hwrm_cfa_flow_alloc_input *req;
 	u16 flow_flags = 0, action_flags = 0;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_FLOW_ALLOC, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_FLOW_ALLOC);
+	if (rc)
+		return rc;
 
-	req.src_fid = cpu_to_le16(flow->src_fid);
-	req.ref_flow_handle = ref_flow_handle;
+	req->src_fid = cpu_to_le16(flow->src_fid);
+	req->ref_flow_handle = ref_flow_handle;
 
 	if (actions->flags & BNXT_TC_ACTION_FLAG_L2_REWRITE) {
-		memcpy(req.l2_rewrite_dmac, actions->l2_rewrite_dmac,
+		memcpy(req->l2_rewrite_dmac, actions->l2_rewrite_dmac,
 		       ETH_ALEN);
-		memcpy(req.l2_rewrite_smac, actions->l2_rewrite_smac,
+		memcpy(req->l2_rewrite_smac, actions->l2_rewrite_smac,
 		       ETH_ALEN);
 		action_flags |=
 			CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_L2_HEADER_REWRITE;
@@ -616,71 +620,71 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 				action_flags |=
 					CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_SRC;
 				/* L3 source rewrite */
-				req.nat_ip_address[0] =
+				req->nat_ip_address[0] =
 					actions->nat.l3.ipv4.saddr.s_addr;
 				/* L4 source port */
 				if (actions->nat.l4.ports.sport)
-					req.nat_port =
+					req->nat_port =
 						actions->nat.l4.ports.sport;
 			} else {
 				action_flags |=
 					CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_DEST;
 				/* L3 destination rewrite */
-				req.nat_ip_address[0] =
+				req->nat_ip_address[0] =
 					actions->nat.l3.ipv4.daddr.s_addr;
 				/* L4 destination port */
 				if (actions->nat.l4.ports.dport)
-					req.nat_port =
+					req->nat_port =
 						actions->nat.l4.ports.dport;
 			}
 			netdev_dbg(bp->dev,
-				   "req.nat_ip_address: %pI4 src_xlate: %d req.nat_port: %x\n",
-				   req.nat_ip_address, actions->nat.src_xlate,
-				   req.nat_port);
+				   "req->nat_ip_address: %pI4 src_xlate: %d req->nat_port: %x\n",
+				   req->nat_ip_address, actions->nat.src_xlate,
+				   req->nat_port);
 		} else {
 			if (actions->nat.src_xlate) {
 				action_flags |=
 					CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_SRC;
 				/* L3 source rewrite */
-				memcpy(req.nat_ip_address,
+				memcpy(req->nat_ip_address,
 				       actions->nat.l3.ipv6.saddr.s6_addr32,
-				       sizeof(req.nat_ip_address));
+				       sizeof(req->nat_ip_address));
 				/* L4 source port */
 				if (actions->nat.l4.ports.sport)
-					req.nat_port =
+					req->nat_port =
 						actions->nat.l4.ports.sport;
 			} else {
 				action_flags |=
 					CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_DEST;
 				/* L3 destination rewrite */
-				memcpy(req.nat_ip_address,
+				memcpy(req->nat_ip_address,
 				       actions->nat.l3.ipv6.daddr.s6_addr32,
-				       sizeof(req.nat_ip_address));
+				       sizeof(req->nat_ip_address));
 				/* L4 destination port */
 				if (actions->nat.l4.ports.dport)
-					req.nat_port =
+					req->nat_port =
 						actions->nat.l4.ports.dport;
 			}
 			netdev_dbg(bp->dev,
-				   "req.nat_ip_address: %pI6 src_xlate: %d req.nat_port: %x\n",
-				   req.nat_ip_address, actions->nat.src_xlate,
-				   req.nat_port);
+				   "req->nat_ip_address: %pI6 src_xlate: %d req->nat_port: %x\n",
+				   req->nat_ip_address, actions->nat.src_xlate,
+				   req->nat_port);
 		}
 	}
 
 	if (actions->flags & BNXT_TC_ACTION_FLAG_TUNNEL_DECAP ||
 	    actions->flags & BNXT_TC_ACTION_FLAG_TUNNEL_ENCAP) {
-		req.tunnel_handle = tunnel_handle;
+		req->tunnel_handle = tunnel_handle;
 		flow_flags |= CFA_FLOW_ALLOC_REQ_FLAGS_TUNNEL;
 		action_flags |= CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_TUNNEL;
 	}
 
-	req.ethertype = flow->l2_key.ether_type;
-	req.ip_proto = flow->l4_key.ip_proto;
+	req->ethertype = flow->l2_key.ether_type;
+	req->ip_proto = flow->l4_key.ip_proto;
 
 	if (flow->flags & BNXT_TC_FLOW_FLAGS_ETH_ADDRS) {
-		memcpy(req.dmac, flow->l2_key.dmac, ETH_ALEN);
-		memcpy(req.smac, flow->l2_key.smac, ETH_ALEN);
+		memcpy(req->dmac, flow->l2_key.dmac, ETH_ALEN);
+		memcpy(req->smac, flow->l2_key.smac, ETH_ALEN);
 	}
 
 	if (flow->l2_key.num_vlans > 0) {
@@ -689,7 +693,7 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 		 * in outer_vlan_tci when num_vlans is 1 (which is
 		 * always the case in TC.)
 		 */
-		req.outer_vlan_tci = flow->l2_key.inner_vlan_tci;
+		req->outer_vlan_tci = flow->l2_key.inner_vlan_tci;
 	}
 
 	/* If all IP and L4 fields are wildcarded then this is an L2 flow */
@@ -702,68 +706,67 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 				CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_IPV6;
 
 		if (flow->flags & BNXT_TC_FLOW_FLAGS_IPV4_ADDRS) {
-			req.ip_dst[0] = l3_key->ipv4.daddr.s_addr;
-			req.ip_dst_mask_len =
+			req->ip_dst[0] = l3_key->ipv4.daddr.s_addr;
+			req->ip_dst_mask_len =
 				inet_mask_len(l3_mask->ipv4.daddr.s_addr);
-			req.ip_src[0] = l3_key->ipv4.saddr.s_addr;
-			req.ip_src_mask_len =
+			req->ip_src[0] = l3_key->ipv4.saddr.s_addr;
+			req->ip_src_mask_len =
 				inet_mask_len(l3_mask->ipv4.saddr.s_addr);
 		} else if (flow->flags & BNXT_TC_FLOW_FLAGS_IPV6_ADDRS) {
-			memcpy(req.ip_dst, l3_key->ipv6.daddr.s6_addr32,
-			       sizeof(req.ip_dst));
-			req.ip_dst_mask_len =
+			memcpy(req->ip_dst, l3_key->ipv6.daddr.s6_addr32,
+			       sizeof(req->ip_dst));
+			req->ip_dst_mask_len =
 					ipv6_mask_len(&l3_mask->ipv6.daddr);
-			memcpy(req.ip_src, l3_key->ipv6.saddr.s6_addr32,
-			       sizeof(req.ip_src));
-			req.ip_src_mask_len =
+			memcpy(req->ip_src, l3_key->ipv6.saddr.s6_addr32,
+			       sizeof(req->ip_src));
+			req->ip_src_mask_len =
 					ipv6_mask_len(&l3_mask->ipv6.saddr);
 		}
 	}
 
 	if (flow->flags & BNXT_TC_FLOW_FLAGS_PORTS) {
-		req.l4_src_port = flow->l4_key.ports.sport;
-		req.l4_src_port_mask = flow->l4_mask.ports.sport;
-		req.l4_dst_port = flow->l4_key.ports.dport;
-		req.l4_dst_port_mask = flow->l4_mask.ports.dport;
+		req->l4_src_port = flow->l4_key.ports.sport;
+		req->l4_src_port_mask = flow->l4_mask.ports.sport;
+		req->l4_dst_port = flow->l4_key.ports.dport;
+		req->l4_dst_port_mask = flow->l4_mask.ports.dport;
 	} else if (flow->flags & BNXT_TC_FLOW_FLAGS_ICMP) {
 		/* l4 ports serve as type/code when ip_proto is ICMP */
-		req.l4_src_port = htons(flow->l4_key.icmp.type);
-		req.l4_src_port_mask = htons(flow->l4_mask.icmp.type);
-		req.l4_dst_port = htons(flow->l4_key.icmp.code);
-		req.l4_dst_port_mask = htons(flow->l4_mask.icmp.code);
+		req->l4_src_port = htons(flow->l4_key.icmp.type);
+		req->l4_src_port_mask = htons(flow->l4_mask.icmp.type);
+		req->l4_dst_port = htons(flow->l4_key.icmp.code);
+		req->l4_dst_port_mask = htons(flow->l4_mask.icmp.code);
 	}
-	req.flags = cpu_to_le16(flow_flags);
+	req->flags = cpu_to_le16(flow_flags);
 
 	if (actions->flags & BNXT_TC_ACTION_FLAG_DROP) {
 		action_flags |= CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_DROP;
 	} else {
 		if (actions->flags & BNXT_TC_ACTION_FLAG_FWD) {
 			action_flags |= CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_FWD;
-			req.dst_fid = cpu_to_le16(actions->dst_fid);
+			req->dst_fid = cpu_to_le16(actions->dst_fid);
 		}
 		if (actions->flags & BNXT_TC_ACTION_FLAG_PUSH_VLAN) {
 			action_flags |=
 			    CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_L2_HEADER_REWRITE;
-			req.l2_rewrite_vlan_tpid = actions->push_vlan_tpid;
-			req.l2_rewrite_vlan_tci = actions->push_vlan_tci;
-			memcpy(&req.l2_rewrite_dmac, &req.dmac, ETH_ALEN);
-			memcpy(&req.l2_rewrite_smac, &req.smac, ETH_ALEN);
+			req->l2_rewrite_vlan_tpid = actions->push_vlan_tpid;
+			req->l2_rewrite_vlan_tci = actions->push_vlan_tci;
+			memcpy(&req->l2_rewrite_dmac, &req->dmac, ETH_ALEN);
+			memcpy(&req->l2_rewrite_smac, &req->smac, ETH_ALEN);
 		}
 		if (actions->flags & BNXT_TC_ACTION_FLAG_POP_VLAN) {
 			action_flags |=
 			    CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_L2_HEADER_REWRITE;
 			/* Rewrite config with tpid = 0 implies vlan pop */
-			req.l2_rewrite_vlan_tpid = 0;
-			memcpy(&req.l2_rewrite_dmac, &req.dmac, ETH_ALEN);
-			memcpy(&req.l2_rewrite_smac, &req.smac, ETH_ALEN);
+			req->l2_rewrite_vlan_tpid = 0;
+			memcpy(&req->l2_rewrite_dmac, &req->dmac, ETH_ALEN);
+			memcpy(&req->l2_rewrite_smac, &req->smac, ETH_ALEN);
 		}
 	}
-	req.action_flags = cpu_to_le16(action_flags);
+	req->action_flags = cpu_to_le16(action_flags);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
 	if (!rc) {
-		resp = bnxt_get_hwrm_resp_addr(bp, &req);
 		/* CFA_FLOW_ALLOC response interpretation:
 		 *		    fw with	     fw with
 		 *		    16-bit	     64-bit
@@ -779,7 +782,7 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 			flow_node->flow_id = resp->flow_id;
 		}
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
@@ -789,67 +792,69 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
 				       __le32 ref_decap_handle,
 				       __le32 *decap_filter_handle)
 {
-	struct hwrm_cfa_decap_filter_alloc_input req = { 0 };
 	struct hwrm_cfa_decap_filter_alloc_output *resp;
 	struct ip_tunnel_key *tun_key = &flow->tun_key;
+	struct hwrm_cfa_decap_filter_alloc_input *req;
 	u32 enables = 0;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_DECAP_FILTER_ALLOC, -1, -1);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_DECAP_FILTER_ALLOC);
+	if (rc)
+		goto exit;
 
-	req.flags = cpu_to_le32(CFA_DECAP_FILTER_ALLOC_REQ_FLAGS_OVS_TUNNEL);
+	req->flags = cpu_to_le32(CFA_DECAP_FILTER_ALLOC_REQ_FLAGS_OVS_TUNNEL);
 	enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_TUNNEL_TYPE |
 		   CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_IP_PROTOCOL;
-	req.tunnel_type = CFA_DECAP_FILTER_ALLOC_REQ_TUNNEL_TYPE_VXLAN;
-	req.ip_protocol = CFA_DECAP_FILTER_ALLOC_REQ_IP_PROTOCOL_UDP;
+	req->tunnel_type = CFA_DECAP_FILTER_ALLOC_REQ_TUNNEL_TYPE_VXLAN;
+	req->ip_protocol = CFA_DECAP_FILTER_ALLOC_REQ_IP_PROTOCOL_UDP;
 
 	if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_ID) {
 		enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_TUNNEL_ID;
 		/* tunnel_id is wrongly defined in hsi defn. as __le32 */
-		req.tunnel_id = tunnel_id_to_key32(tun_key->tun_id);
+		req->tunnel_id = tunnel_id_to_key32(tun_key->tun_id);
 	}
 
 	if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_ETH_ADDRS) {
 		enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_DST_MACADDR;
-		ether_addr_copy(req.dst_macaddr, l2_info->dmac);
+		ether_addr_copy(req->dst_macaddr, l2_info->dmac);
 	}
 	if (l2_info->num_vlans) {
 		enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_T_IVLAN_VID;
-		req.t_ivlan_vid = l2_info->inner_vlan_tci;
+		req->t_ivlan_vid = l2_info->inner_vlan_tci;
 	}
 
 	enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_ETHERTYPE;
-	req.ethertype = htons(ETH_P_IP);
+	req->ethertype = htons(ETH_P_IP);
 
 	if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_IPV4_ADDRS) {
 		enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_SRC_IPADDR |
 			   CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_DST_IPADDR |
 			   CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_IPADDR_TYPE;
-		req.ip_addr_type = CFA_DECAP_FILTER_ALLOC_REQ_IP_ADDR_TYPE_IPV4;
-		req.dst_ipaddr[0] = tun_key->u.ipv4.dst;
-		req.src_ipaddr[0] = tun_key->u.ipv4.src;
+		req->ip_addr_type =
+			CFA_DECAP_FILTER_ALLOC_REQ_IP_ADDR_TYPE_IPV4;
+		req->dst_ipaddr[0] = tun_key->u.ipv4.dst;
+		req->src_ipaddr[0] = tun_key->u.ipv4.src;
 	}
 
 	if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_PORTS) {
 		enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_DST_PORT;
-		req.dst_port = tun_key->tp_dst;
+		req->dst_port = tun_key->tp_dst;
 	}
 
 	/* Eventhough the decap_handle returned by hwrm_cfa_decap_filter_alloc
 	 * is defined as __le32, l2_ctxt_ref_id is defined in HSI as __le16.
 	 */
-	req.l2_ctxt_ref_id = (__force __le16)ref_decap_handle;
-	req.enables = cpu_to_le32(enables);
+	req->l2_ctxt_ref_id = (__force __le16)ref_decap_handle;
+	req->enables = cpu_to_le32(enables);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc) {
-		resp = bnxt_get_hwrm_resp_addr(bp, &req);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
+	if (!rc)
 		*decap_filter_handle = resp->decap_filter_id;
-	} else {
+	hwrm_req_drop(bp, req);
+exit:
+	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d\n", __func__, rc);
-	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
 
 	return rc;
 }
@@ -857,13 +862,14 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
 static int hwrm_cfa_decap_filter_free(struct bnxt *bp,
 				      __le32 decap_filter_handle)
 {
-	struct hwrm_cfa_decap_filter_free_input req = { 0 };
+	struct hwrm_cfa_decap_filter_free_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_DECAP_FILTER_FREE, -1, -1);
-	req.decap_filter_id = decap_filter_handle;
-
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_DECAP_FILTER_FREE);
+	if (!rc) {
+		req->decap_filter_id = decap_filter_handle;
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d\n", __func__, rc);
 
@@ -875,18 +881,18 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 				       struct bnxt_tc_l2_key *l2_info,
 				       __le32 *encap_record_handle)
 {
-	struct hwrm_cfa_encap_record_alloc_input req = { 0 };
 	struct hwrm_cfa_encap_record_alloc_output *resp;
-	struct hwrm_cfa_encap_data_vxlan *encap =
-			(struct hwrm_cfa_encap_data_vxlan *)&req.encap_data;
-	struct hwrm_vxlan_ipv4_hdr *encap_ipv4 =
-				(struct hwrm_vxlan_ipv4_hdr *)encap->l3;
+	struct hwrm_cfa_encap_record_alloc_input *req;
+	struct hwrm_cfa_encap_data_vxlan *encap;
+	struct hwrm_vxlan_ipv4_hdr *encap_ipv4;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_ENCAP_RECORD_ALLOC, -1, -1);
-
-	req.encap_type = CFA_ENCAP_RECORD_ALLOC_REQ_ENCAP_TYPE_VXLAN;
+	rc = hwrm_req_init(bp, req, HWRM_CFA_ENCAP_RECORD_ALLOC);
+	if (rc)
+		goto exit;
 
+	encap = (struct hwrm_cfa_encap_data_vxlan *)&req->encap_data;
+	req->encap_type = CFA_ENCAP_RECORD_ALLOC_REQ_ENCAP_TYPE_VXLAN;
 	ether_addr_copy(encap->dst_mac_addr, l2_info->dmac);
 	ether_addr_copy(encap->src_mac_addr, l2_info->smac);
 	if (l2_info->num_vlans) {
@@ -895,6 +901,7 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 		encap->ovlan_tpid = l2_info->inner_vlan_tpid;
 	}
 
+	encap_ipv4 = (struct hwrm_vxlan_ipv4_hdr *)encap->l3;
 	encap_ipv4->ver_hlen = 4 << VXLAN_IPV4_HDR_VER_HLEN_VERSION_SFT;
 	encap_ipv4->ver_hlen |= 5 << VXLAN_IPV4_HDR_VER_HLEN_HEADER_LENGTH_SFT;
 	encap_ipv4->ttl = encap_key->ttl;
@@ -906,15 +913,14 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 	encap->dst_port = encap_key->tp_dst;
 	encap->vni = tunnel_id_to_key32(encap_key->tun_id);
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc) {
-		resp = bnxt_get_hwrm_resp_addr(bp, &req);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send_silent(bp, req);
+	if (!rc)
 		*encap_record_handle = resp->encap_record_id;
-	} else {
+	hwrm_req_drop(bp, req);
+exit:
+	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d\n", __func__, rc);
-	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
 
 	return rc;
 }
@@ -922,13 +928,14 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 static int hwrm_cfa_encap_record_free(struct bnxt *bp,
 				      __le32 encap_record_handle)
 {
-	struct hwrm_cfa_encap_record_free_input req = { 0 };
+	struct hwrm_cfa_encap_record_free_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_ENCAP_RECORD_FREE, -1, -1);
-	req.encap_record_id = encap_record_handle;
-
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_ENCAP_RECORD_FREE);
+	if (!rc) {
+		req->encap_record_id = encap_record_handle;
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d\n", __func__, rc);
 
@@ -1674,14 +1681,20 @@ static int
 bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp, int num_flows,
 			     struct bnxt_tc_stats_batch stats_batch[])
 {
-	struct hwrm_cfa_flow_stats_input req = { 0 };
 	struct hwrm_cfa_flow_stats_output *resp;
-	__le16 *req_flow_handles = &req.flow_handle_0;
-	__le32 *req_flow_ids = &req.flow_id_0;
+	struct hwrm_cfa_flow_stats_input *req;
+	__le16 *req_flow_handles;
+	__le32 *req_flow_ids;
 	int rc, i;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_FLOW_STATS, -1, -1);
-	req.num_flows = cpu_to_le16(num_flows);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_FLOW_STATS);
+	if (rc)
+		goto exit;
+
+	req_flow_handles = &req->flow_handle_0;
+	req_flow_ids = &req->flow_id_0;
+
+	req->num_flows = cpu_to_le16(num_flows);
 	for (i = 0; i < num_flows; i++) {
 		struct bnxt_tc_flow_node *flow_node = stats_batch[i].flow_node;
 
@@ -1689,13 +1702,12 @@ bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp, int num_flows,
 					&req_flow_handles[i], &req_flow_ids[i]);
 	}
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		__le64 *resp_packets;
 		__le64 *resp_bytes;
 
-		resp = bnxt_get_hwrm_resp_addr(bp, &req);
 		resp_packets = &resp->packet_0;
 		resp_bytes = &resp->byte_0;
 
@@ -1705,10 +1717,11 @@ bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp, int num_flows,
 			stats_batch[i].hw_stats.bytes =
 						le64_to_cpu(resp_bytes[i]);
 		}
-	} else {
-		netdev_info(bp->dev, "error rc=%d\n", rc);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
+exit:
+	if (rc)
+		netdev_info(bp->dev, "error rc=%d\n", rc);
 
 	return rc;
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index f621cffccd3a..fde0c3e8ac57 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -238,27 +238,33 @@ static int bnxt_send_msg(struct bnxt_en_dev *edev, int ulp_id,
 {
 	struct net_device *dev = edev->net;
 	struct bnxt *bp = netdev_priv(dev);
+	struct output *resp;
 	struct input *req;
+	u32 resp_len;
 	int rc;
 
 	if (ulp_id != BNXT_ROCE_ULP && bp->fw_reset_state)
 		return -EBUSY;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	req = fw_msg->msg;
-	req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
-	rc = _hwrm_send_message(bp, fw_msg->msg, fw_msg->msg_len,
-				fw_msg->timeout);
-	if (!rc) {
-		struct output *resp = bp->hwrm_cmd_resp_addr;
-		u32 len = le16_to_cpu(resp->resp_len);
+	rc = hwrm_req_init(bp, req, 0 /* don't care */);
+	if (rc)
+		return rc;
 
-		if (fw_msg->resp_max_len < len)
-			len = fw_msg->resp_max_len;
+	rc = hwrm_req_replace(bp, req, fw_msg->msg, fw_msg->msg_len);
+	if (rc)
+		return rc;
 
-		memcpy(fw_msg->resp, resp, len);
+	hwrm_req_timeout(bp, req, fw_msg->timeout);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	resp_len = le16_to_cpu(resp->resp_len);
+	if (resp_len) {
+		if (fw_msg->resp_max_len < resp_len)
+			resp_len = fw_msg->resp_max_len;
+
+		memcpy(fw_msg->resp, resp, resp_len);
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
index 3ed712a08207..9401936b74fa 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
@@ -28,38 +28,40 @@
 static int hwrm_cfa_vfr_alloc(struct bnxt *bp, u16 vf_idx,
 			      u16 *tx_cfa_action, u16 *rx_cfa_code)
 {
-	struct hwrm_cfa_vfr_alloc_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_cfa_vfr_alloc_input req = { 0 };
+	struct hwrm_cfa_vfr_alloc_output *resp;
+	struct hwrm_cfa_vfr_alloc_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_VFR_ALLOC, -1, -1);
-	req.vf_id = cpu_to_le16(vf_idx);
-	sprintf(req.vfr_name, "vfr%d", vf_idx);
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_VFR_ALLOC);
 	if (!rc) {
-		*tx_cfa_action = le16_to_cpu(resp->tx_cfa_action);
-		*rx_cfa_code = le16_to_cpu(resp->rx_cfa_code);
-		netdev_dbg(bp->dev, "tx_cfa_action=0x%x, rx_cfa_code=0x%x",
-			   *tx_cfa_action, *rx_cfa_code);
-	} else {
-		netdev_info(bp->dev, "%s error rc=%d\n", __func__, rc);
+		req->vf_id = cpu_to_le16(vf_idx);
+		sprintf(req->vfr_name, "vfr%d", vf_idx);
+
+		resp = hwrm_req_hold(bp, req);
+		rc = hwrm_req_send(bp, req);
+		if (!rc) {
+			*tx_cfa_action = le16_to_cpu(resp->tx_cfa_action);
+			*rx_cfa_code = le16_to_cpu(resp->rx_cfa_code);
+			netdev_dbg(bp->dev, "tx_cfa_action=0x%x, rx_cfa_code=0x%x",
+				   *tx_cfa_action, *rx_cfa_code);
+		}
+		hwrm_req_drop(bp, req);
 	}
-
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	if (rc)
+		netdev_info(bp->dev, "%s error rc=%d\n", __func__, rc);
 	return rc;
 }
 
 static int hwrm_cfa_vfr_free(struct bnxt *bp, u16 vf_idx)
 {
-	struct hwrm_cfa_vfr_free_input req = { 0 };
+	struct hwrm_cfa_vfr_free_input *req;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_VFR_FREE, -1, -1);
-	sprintf(req.vfr_name, "vfr%d", vf_idx);
-
-	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	rc = hwrm_req_init(bp, req, HWRM_CFA_VFR_FREE);
+	if (!rc) {
+		sprintf(req->vfr_name, "vfr%d", vf_idx);
+		rc = hwrm_req_send(bp, req);
+	}
 	if (rc)
 		netdev_info(bp->dev, "%s error rc=%d\n", __func__, rc);
 	return rc;
@@ -68,17 +70,18 @@ static int hwrm_cfa_vfr_free(struct bnxt *bp, u16 vf_idx)
 static int bnxt_hwrm_vfr_qcfg(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
 			      u16 *max_mtu)
 {
-	struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
-	struct hwrm_func_qcfg_input req = {0};
+	struct hwrm_func_qcfg_output *resp;
+	struct hwrm_func_qcfg_input *req;
 	u16 mtu;
 	int rc;
 
-	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
-	req.fid = cpu_to_le16(bp->pf.vf[vf_rep->vf_idx].fw_fid);
-
-	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
+	if (rc)
+		return rc;
 
-	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	req->fid = cpu_to_le16(bp->pf.vf[vf_rep->vf_idx].fw_fid);
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
 	if (!rc) {
 		mtu = le16_to_cpu(resp->max_mtu_configured);
 		if (!mtu)
@@ -86,7 +89,7 @@ static int bnxt_hwrm_vfr_qcfg(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
 		else
 			*max_mtu = mtu;
 	}
-	mutex_unlock(&bp->hwrm_cmd_lock);
+	hwrm_req_drop(bp, req);
 	return rc;
 }
 
-- 
2.18.1


[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]

[PATCH net-next v2 10/11] bnxt_en: remove legacy HWRM interface

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 6314 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

There are no longer any callers relying on the old API.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 18 +----
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  2 -
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 77 -------------------
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    | 10 ---
 4 files changed, 1 insertion(+), 106 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6e9ca9b59e51..ddec1163748d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3956,29 +3956,13 @@ static int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 
 static void bnxt_free_hwrm_resources(struct bnxt *bp)
 {
-	struct pci_dev *pdev = bp->pdev;
-
-	if (bp->hwrm_cmd_resp_addr) {
-		dma_free_coherent(&pdev->dev, PAGE_SIZE, bp->hwrm_cmd_resp_addr,
-				  bp->hwrm_cmd_resp_dma_addr);
-		bp->hwrm_cmd_resp_addr = NULL;
-	}
-
 	dma_pool_destroy(bp->hwrm_dma_pool);
 	bp->hwrm_dma_pool = NULL;
 }
 
 static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
 {
-	struct pci_dev *pdev = bp->pdev;
-
-	bp->hwrm_cmd_resp_addr = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
-						   &bp->hwrm_cmd_resp_dma_addr,
-						   GFP_KERNEL);
-	if (!bp->hwrm_cmd_resp_addr)
-		return -ENOMEM;
-
-	bp->hwrm_dma_pool = dma_pool_create("bnxt_hwrm", &pdev->dev,
+	bp->hwrm_dma_pool = dma_pool_create("bnxt_hwrm", &bp->pdev->dev,
 					    BNXT_HWRM_DMA_SIZE,
 					    BNXT_HWRM_DMA_ALIGN, 0);
 	if (!bp->hwrm_dma_pool)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 79a78a7468f3..f343e87bef0b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1881,8 +1881,6 @@ struct bnxt {
 	u16			hwrm_cmd_seq;
 	u16                     hwrm_cmd_kong_seq;
 	u16			hwrm_intr_seq_id;
-	void			*hwrm_cmd_resp_addr;
-	dma_addr_t		hwrm_cmd_resp_dma_addr;
 	struct dma_pool		*hwrm_dma_pool;
 
 	struct rtnl_link_stats64	net_stats_prev;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index 6609a86d5226..60ec0caa5c56 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -24,17 +24,6 @@
 #include "bnxt.h"
 #include "bnxt_hwrm.h"
 
-void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
-			    u16 cmpl_ring, u16 target_id)
-{
-	struct input *req = request;
-
-	req->req_type = cpu_to_le16(req_type);
-	req->cmpl_ring = cpu_to_le16(cmpl_ring);
-	req->target_id = cpu_to_le16(target_id);
-	req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
-}
-
 static u64 hwrm_calc_sentinel(struct bnxt_hwrm_ctx *ctx, u16 req_type)
 {
 	return (((uintptr_t)ctx) + req_type) ^ BNXT_HWRM_SENTINEL;
@@ -587,72 +576,6 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 	return rc;
 }
 
-static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
-				 int timeout, bool silent)
-{
-	struct bnxt_hwrm_ctx default_ctx = {0};
-	struct bnxt_hwrm_ctx *ctx = &default_ctx;
-	struct input *req = msg;
-	int rc;
-
-	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
-	    msg_len > BNXT_HWRM_MAX_REQ_LEN) {
-		rc = __hwrm_req_init(bp, (void **)&req,
-				     le16_to_cpu(req->req_type), msg_len);
-		if (rc)
-			return rc;
-		memcpy(req, msg, msg_len); /* also copies resp_addr */
-		ctx = __hwrm_ctx(bp, (u8 *)req);
-		/* belts and brances, NULL ctx shouldn't be possible here */
-		if (!ctx)
-			return -ENOMEM;
-	}
-
-	ctx->req = req;
-	ctx->req_len = msg_len;
-	ctx->resp = bp->hwrm_cmd_resp_addr;
-	/* global response is not reallocated __GFP_ZERO between requests */
-	ctx->flags = BNXT_HWRM_INTERNAL_RESP_DIRTY;
-	ctx->timeout = timeout ?: DFLT_HWRM_CMD_TIMEOUT;
-	if (silent)
-		ctx->flags |= BNXT_HWRM_CTX_SILENT;
-
-	/* will consume req if allocated with __hwrm_req_init() */
-	return __hwrm_send(bp, ctx);
-}
-
-int _hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
-{
-	return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, false);
-}
-
-int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
-			      int timeout)
-{
-	return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true);
-}
-
-int hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
-{
-	int rc;
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = _hwrm_send_message(bp, msg, msg_len, timeout);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return rc;
-}
-
-int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len,
-			     int timeout)
-{
-	int rc;
-
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return rc;
-}
-
 /**
  * hwrm_req_send() - Execute an HWRM command.
  * @bp: The driver context.
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
index b3af7a88e2c7..39032cf66258 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
@@ -114,11 +114,6 @@ static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req)
 		 le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));
 }
 
-static inline void *bnxt_get_hwrm_resp_addr(struct bnxt *bp, void *req)
-{
-	return bp->hwrm_cmd_resp_addr;
-}
-
 static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp, u16 dst)
 {
 	u16 seq_id;
@@ -130,11 +125,6 @@ static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp, u16 dst)
 	return seq_id;
 }
 
-void bnxt_hwrm_cmd_hdr_init(struct bnxt *, void *, u16, u16, u16);
-int _hwrm_send_message(struct bnxt *bp, void *msg, u32 len, int timeout);
-int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
-int hwrm_send_message(struct bnxt *bp, void *msg, u32 len, int timeout);
-int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 len, int timeout);
 int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len);
 #define hwrm_req_init(bp, req, req_type) \
 	__hwrm_req_init((bp), (void **)&(req), (req_type), sizeof(*(req)))
-- 
2.18.1


[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]

[PATCH net-next v2 11/11] bnxt_en: support multiple HWRM commands in flight

[Michael Chan]

[-- Attachment #1: Type: text/plain, Size: 10682 bytes --]

From: Edwin Peer <edwin.peer@broadcom.com>

Add infrastructure to maintain a pending list of HWRM commands awaiting
completion and reduce the scope of the hwrm_cmd_lock mutex so that it
protects only the request mailbox. The mailbox is free to use for one
or more concurrent commands after receiving deferred response events.

For uniformity and completeness, use the same pending list for
collecting completions for commands that respond via a completion ring.
These commands are only used for freeing rings and for IRQ test and
we only support one such command in flight.

Note deferred responses are also only supported on the main channel.
The secondary channel (KONG) does not support deferred responses.

Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 21 +++-
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  2 +-
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c    | 96 +++++++++++++++----
 .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h    | 33 ++++---
 4 files changed, 113 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index ddec1163748d..627f85ee3922 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -277,6 +277,7 @@ static const u16 bnxt_async_events_arr[] = {
 	ASYNC_EVENT_CMPL_EVENT_ID_RESET_NOTIFY,
 	ASYNC_EVENT_CMPL_EVENT_ID_ERROR_RECOVERY,
 	ASYNC_EVENT_CMPL_EVENT_ID_DEBUG_NOTIFICATION,
+	ASYNC_EVENT_CMPL_EVENT_ID_DEFERRED_RESPONSE,
 	ASYNC_EVENT_CMPL_EVENT_ID_RING_MONITOR_MSG,
 	ASYNC_EVENT_CMPL_EVENT_ID_ECHO_REQUEST,
 	ASYNC_EVENT_CMPL_EVENT_ID_PPS_TIMESTAMP,
@@ -2269,6 +2270,12 @@ static int bnxt_async_event_process(struct bnxt *bp,
 		bnxt_event_error_report(bp, data1, data2);
 		goto async_event_process_exit;
 	}
+	case ASYNC_EVENT_CMPL_EVENT_ID_DEFERRED_RESPONSE: {
+		u16 seq_id = le32_to_cpu(cmpl->event_data2) & 0xffff;
+
+		hwrm_update_token(bp, seq_id, BNXT_HWRM_DEFERRED);
+		goto async_event_process_exit;
+	}
 	default:
 		goto async_event_process_exit;
 	}
@@ -2288,10 +2295,7 @@ static int bnxt_hwrm_handler(struct bnxt *bp, struct tx_cmp *txcmp)
 	switch (cmpl_type) {
 	case CMPL_BASE_TYPE_HWRM_DONE:
 		seq_id = le16_to_cpu(h_cmpl->sequence_id);
-		if (seq_id == bp->hwrm_intr_seq_id)
-			bp->hwrm_intr_seq_id = (u16)~bp->hwrm_intr_seq_id;
-		else
-			netdev_err(bp->dev, "Invalid hwrm seq id %d\n", seq_id);
+		hwrm_update_token(bp, seq_id, BNXT_HWRM_COMPLETE);
 		break;
 
 	case CMPL_BASE_TYPE_HWRM_FWD_REQ:
@@ -3956,8 +3960,15 @@ static int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 
 static void bnxt_free_hwrm_resources(struct bnxt *bp)
 {
+	struct bnxt_hwrm_wait_token *token;
+
 	dma_pool_destroy(bp->hwrm_dma_pool);
 	bp->hwrm_dma_pool = NULL;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(token, &bp->hwrm_pending_list, node)
+		WRITE_ONCE(token->state, BNXT_HWRM_CANCELLED);
+	rcu_read_unlock();
 }
 
 static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
@@ -3968,6 +3979,8 @@ static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
 	if (!bp->hwrm_dma_pool)
 		return -ENOMEM;
 
+	INIT_HLIST_HEAD(&bp->hwrm_pending_list);
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index f343e87bef0b..a8212dcdad5f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1880,8 +1880,8 @@ struct bnxt {
 	u32			hwrm_spec_code;
 	u16			hwrm_cmd_seq;
 	u16                     hwrm_cmd_kong_seq;
-	u16			hwrm_intr_seq_id;
 	struct dma_pool		*hwrm_dma_pool;
+	struct hlist_head	hwrm_pending_list;
 
 	struct rtnl_link_stats64	net_stats_prev;
 	struct bnxt_stats_mem	port_stats;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index 60ec0caa5c56..acef61abe35d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -16,6 +16,7 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
+#include <linux/list.h>
 #include <linux/netdevice.h>
 #include <linux/pci.h>
 #include <linux/skbuff.h>
@@ -363,19 +364,72 @@ static int __hwrm_to_stderr(u32 hwrm_err)
 	}
 }
 
+static struct bnxt_hwrm_wait_token *
+__hwrm_acquire_token(struct bnxt *bp, enum bnxt_hwrm_chnl dst)
+{
+	struct bnxt_hwrm_wait_token *token;
+
+	token = kzalloc(sizeof(*token), GFP_KERNEL);
+	if (!token)
+		return NULL;
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+
+	token->dst = dst;
+	token->state = BNXT_HWRM_PENDING;
+	if (dst == BNXT_HWRM_CHNL_CHIMP) {
+		token->seq_id = bp->hwrm_cmd_seq++;
+		hlist_add_head_rcu(&token->node, &bp->hwrm_pending_list);
+	} else {
+		token->seq_id = bp->hwrm_cmd_kong_seq++;
+	}
+
+	return token;
+}
+
+static void
+__hwrm_release_token(struct bnxt *bp, struct bnxt_hwrm_wait_token *token)
+{
+	if (token->dst == BNXT_HWRM_CHNL_CHIMP) {
+		hlist_del_rcu(&token->node);
+		kfree_rcu(token, rcu);
+	} else {
+		kfree(token);
+	}
+	mutex_unlock(&bp->hwrm_cmd_lock);
+}
+
+void
+hwrm_update_token(struct bnxt *bp, u16 seq_id, enum bnxt_hwrm_wait_state state)
+{
+	struct bnxt_hwrm_wait_token *token;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(token, &bp->hwrm_pending_list, node) {
+		if (token->seq_id == seq_id) {
+			WRITE_ONCE(token->state, state);
+			rcu_read_unlock();
+			return;
+		}
+	}
+	rcu_read_unlock();
+	netdev_err(bp->dev, "Invalid hwrm seq id %d\n", seq_id);
+}
+
 static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 {
 	u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER;
+	enum bnxt_hwrm_chnl dst = BNXT_HWRM_CHNL_CHIMP;
 	u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM;
+	struct bnxt_hwrm_wait_token *token = NULL;
 	struct hwrm_short_input short_input = {0};
 	u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN;
 	unsigned int i, timeout, tmo_count;
-	u16 dst = BNXT_HWRM_CHNL_CHIMP;
-	int intr_process, rc = -EBUSY;
 	u32 *data = (u32 *)ctx->req;
 	u32 msg_len = ctx->req_len;
-	u16 cp_ring_id, len = 0;
+	int rc = -EBUSY;
 	u32 req_type;
+	u16 len = 0;
 	u8 *valid;
 
 	if (ctx->flags & BNXT_HWRM_INTERNAL_RESP_DIRTY)
@@ -403,13 +457,12 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 		}
 	}
 
-	cp_ring_id = le16_to_cpu(ctx->req->cmpl_ring);
-	intr_process = (cp_ring_id == INVALID_HW_RING_ID) ? 0 : 1;
-
-	ctx->req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp, dst));
-	/* currently supports only one outstanding message */
-	if (intr_process)
-		bp->hwrm_intr_seq_id = le16_to_cpu(ctx->req->seq_id);
+	token = __hwrm_acquire_token(bp, dst);
+	if (!token) {
+		rc = -ENOMEM;
+		goto exit;
+	}
+	ctx->req->seq_id = cpu_to_le16(token->seq_id);
 
 	if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) ||
 	    msg_len > BNXT_HWRM_MAX_REQ_LEN) {
@@ -456,11 +509,9 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 	timeout = timeout - HWRM_SHORT_MIN_TIMEOUT * HWRM_SHORT_TIMEOUT_COUNTER;
 	tmo_count += DIV_ROUND_UP(timeout, HWRM_MIN_TIMEOUT);
 
-	if (intr_process) {
-		u16 seq_id = bp->hwrm_intr_seq_id;
-
+	if (le16_to_cpu(ctx->req->cmpl_ring) != INVALID_HW_RING_ID) {
 		/* Wait until hwrm response cmpl interrupt is processed */
-		while (bp->hwrm_intr_seq_id != (u16)~seq_id &&
+		while (READ_ONCE(token->state) < BNXT_HWRM_COMPLETE &&
 		       i++ < tmo_count) {
 			/* Abort the wait for completion if the FW health
 			 * check has failed.
@@ -479,7 +530,7 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 			}
 		}
 
-		if (bp->hwrm_intr_seq_id != (u16)~seq_id) {
+		if (READ_ONCE(token->state) != BNXT_HWRM_COMPLETE) {
 			if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
 				netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
 					   le16_to_cpu(ctx->req->req_type));
@@ -498,6 +549,13 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 			 */
 			if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state))
 				goto exit;
+
+			if (token &&
+			    READ_ONCE(token->state) == BNXT_HWRM_DEFERRED) {
+				__hwrm_release_token(bp, token);
+				token = NULL;
+			}
+
 			len = le16_to_cpu(READ_ONCE(ctx->resp->resp_len));
 			if (len) {
 				__le16 resp_seq = READ_ONCE(ctx->resp->seq_id);
@@ -569,6 +627,8 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 	}
 	rc = __hwrm_to_stderr(rc);
 exit:
+	if (token)
+		__hwrm_release_token(bp, token);
 	if (ctx->flags & BNXT_HWRM_INTERNAL_CTX_OWNED)
 		ctx->flags |= BNXT_HWRM_INTERNAL_RESP_DIRTY;
 	else
@@ -609,15 +669,11 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
 int hwrm_req_send(struct bnxt *bp, void *req)
 {
 	struct bnxt_hwrm_ctx *ctx = __hwrm_ctx(bp, req);
-	int rc;
 
 	if (!ctx)
 		return -EINVAL;
 
-	mutex_lock(&bp->hwrm_cmd_lock);
-	rc = __hwrm_send(bp, ctx);
-	mutex_unlock(&bp->hwrm_cmd_lock);
-	return rc;
+	return __hwrm_send(bp, ctx);
 }
 
 /**
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
index 39032cf66258..4d17f0d5363b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h
@@ -37,6 +37,25 @@ struct bnxt_hwrm_ctx {
 	gfp_t gfp;
 };
 
+enum bnxt_hwrm_wait_state {
+	BNXT_HWRM_PENDING,
+	BNXT_HWRM_DEFERRED,
+	BNXT_HWRM_COMPLETE,
+	BNXT_HWRM_CANCELLED,
+};
+
+enum bnxt_hwrm_chnl { BNXT_HWRM_CHNL_CHIMP, BNXT_HWRM_CHNL_KONG };
+
+struct bnxt_hwrm_wait_token {
+	struct rcu_head rcu;
+	struct hlist_node node;
+	enum bnxt_hwrm_wait_state state;
+	enum bnxt_hwrm_chnl dst;
+	u16 seq_id;
+};
+
+void hwrm_update_token(struct bnxt *bp, u16 seq, enum bnxt_hwrm_wait_state s);
+
 #define BNXT_HWRM_MAX_REQ_LEN		(bp->hwrm_max_req_len)
 #define BNXT_HWRM_SHORT_REQ_LEN		sizeof(struct hwrm_short_input)
 #define HWRM_CMD_MAX_TIMEOUT		40000
@@ -78,9 +97,6 @@ static inline unsigned int hwrm_total_timeout(unsigned int n)
 
 #define HWRM_VALID_BIT_DELAY_USEC	150
 
-#define BNXT_HWRM_CHNL_CHIMP	0
-#define BNXT_HWRM_CHNL_KONG	1
-
 static inline bool bnxt_cfa_hwrm_message(u16 req_type)
 {
 	switch (req_type) {
@@ -114,17 +130,6 @@ static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req)
 		 le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));
 }
 
-static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp, u16 dst)
-{
-	u16 seq_id;
-
-	if (dst == BNXT_HWRM_CHNL_CHIMP)
-		seq_id = bp->hwrm_cmd_seq++;
-	else
-		seq_id = bp->hwrm_cmd_kong_seq++;
-	return seq_id;
-}
-
 int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len);
 #define hwrm_req_init(bp, req, req_type) \
 	__hwrm_req_init((bp), (void **)&(req), (req_type), sizeof(*(req)))
-- 
2.18.1


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Re: [PATCH net-next v2 00/11] bnxt_en: Implement new driver APIs to send FW messages

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (refs/heads/master):

On Sun, 29 Aug 2021 03:34:55 -0400 you wrote:
> The current driver APIs to send messages to the firmware allow only one
> outstanding message in flight.  There is only one buffer for the firmware
> response for each firmware channel.  To send a firmware message, all
> callers must take a mutex and it is released after the firmware response
> has been read.  This scheme does not allow multiple firmware messages
> in flight.  Firmware may take a long time to respond to some messages
> (e.g. NVRAM related ones) and this causes the mutex to be held for
> a long time, blocking other callers.
> 
> [...]

Here is the summary with links:
  - [net-next,v2,01/11] bnxt_en: remove DMA mapping for KONG response
    https://git.kernel.org/netdev/net-next/c/6c172d59ad79
  - [net-next,v2,02/11] bnxt_en: Refactor the HWRM_VER_GET firmware calls
    https://git.kernel.org/netdev/net-next/c/7b370ad77392
  - [net-next,v2,03/11] bnxt_en: move HWRM API implementation into separate file
    https://git.kernel.org/netdev/net-next/c/3c8c20db769c
  - [net-next,v2,04/11] bnxt_en: introduce new firmware message API based on DMA pools
    https://git.kernel.org/netdev/net-next/c/f9ff578251dc
  - [net-next,v2,05/11] bnxt_en: discard out of sequence HWRM responses
    https://git.kernel.org/netdev/net-next/c/02b9aa106868
  - [net-next,v2,06/11] bnxt_en: add HWRM request assignment API
    https://git.kernel.org/netdev/net-next/c/ecddc29d928d
  - [net-next,v2,07/11] bnxt_en: add support for HWRM request slices
    https://git.kernel.org/netdev/net-next/c/213808170840
  - [net-next,v2,08/11] bnxt_en: use link_lock instead of hwrm_cmd_lock to protect link_info
    https://git.kernel.org/netdev/net-next/c/3c10ed497fa8
  - [net-next,v2,09/11] bnxt_en: update all firmware calls to use the new APIs
    https://git.kernel.org/netdev/net-next/c/bbf33d1d9805
  - [net-next,v2,10/11] bnxt_en: remove legacy HWRM interface
    https://git.kernel.org/netdev/net-next/c/b34695a894b8
  - [net-next,v2,11/11] bnxt_en: support multiple HWRM commands in flight
    https://git.kernel.org/netdev/net-next/c/68f684e257d7

You are awesome, thank you!
--
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Re: [PATCH net-next v2 04/11] bnxt_en: introduce new firmware message API based on DMA pools

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 9370 bytes --]

Hi Michael,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Michael-Chan/bnxt_en-Implement-new-driver-APIs-to-send-FW-messages/20210829-153728
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git c77225119daa0ca0a9c6c007945c0a87b3e4a2e8
config: parisc-allyesconfig (attached as .config)
compiler: hppa-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/cfca001de60095f2133fabd5dd01c092de1fd34d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Michael-Chan/bnxt_en-Implement-new-driver-APIs-to-send-FW-messages/20210829-153728
        git checkout cfca001de60095f2133fabd5dd01c092de1fd34d
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/mm_types.h:9,
                    from include/linux/buildid.h:5,
                    from include/linux/module.h:14,
                    from drivers/net/ethernet/broadcom/bnxt/bnxt.c:11:
   drivers/net/ethernet/broadcom/bnxt/bnxt.c: In function 'bnxt_init_board':
>> drivers/net/ethernet/broadcom/bnxt/bnxt.c:12062:27: error: 'struct bnxt' has no member named 'db_lock'
   12062 |         spin_lock_init(&bp->db_lock);
         |                           ^~
   include/linux/spinlock.h:338:45: note: in definition of macro 'spin_lock_init'
     338 |         __raw_spin_lock_init(spinlock_check(lock),              \
         |                                             ^~~~


vim +12062 drivers/net/ethernet/broadcom/bnxt/bnxt.c

230d1f0de754b4 Michael Chan       2019-08-29  11998  
c0c050c58d8409 Michael Chan       2015-10-22  11999  static int bnxt_init_board(struct pci_dev *pdev, struct net_device *dev)
c0c050c58d8409 Michael Chan       2015-10-22  12000  {
c0c050c58d8409 Michael Chan       2015-10-22  12001  	int rc;
c0c050c58d8409 Michael Chan       2015-10-22  12002  	struct bnxt *bp = netdev_priv(dev);
c0c050c58d8409 Michael Chan       2015-10-22  12003  
c0c050c58d8409 Michael Chan       2015-10-22  12004  	SET_NETDEV_DEV(dev, &pdev->dev);
c0c050c58d8409 Michael Chan       2015-10-22  12005  
c0c050c58d8409 Michael Chan       2015-10-22  12006  	/* enable device (incl. PCI PM wakeup), and bus-mastering */
c0c050c58d8409 Michael Chan       2015-10-22  12007  	rc = pci_enable_device(pdev);
c0c050c58d8409 Michael Chan       2015-10-22  12008  	if (rc) {
c0c050c58d8409 Michael Chan       2015-10-22  12009  		dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
c0c050c58d8409 Michael Chan       2015-10-22  12010  		goto init_err;
c0c050c58d8409 Michael Chan       2015-10-22  12011  	}
c0c050c58d8409 Michael Chan       2015-10-22  12012  
c0c050c58d8409 Michael Chan       2015-10-22  12013  	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
c0c050c58d8409 Michael Chan       2015-10-22  12014  		dev_err(&pdev->dev,
c0c050c58d8409 Michael Chan       2015-10-22  12015  			"Cannot find PCI device base address, aborting\n");
c0c050c58d8409 Michael Chan       2015-10-22  12016  		rc = -ENODEV;
c0c050c58d8409 Michael Chan       2015-10-22  12017  		goto init_err_disable;
c0c050c58d8409 Michael Chan       2015-10-22  12018  	}
c0c050c58d8409 Michael Chan       2015-10-22  12019  
c0c050c58d8409 Michael Chan       2015-10-22  12020  	rc = pci_request_regions(pdev, DRV_MODULE_NAME);
c0c050c58d8409 Michael Chan       2015-10-22  12021  	if (rc) {
c0c050c58d8409 Michael Chan       2015-10-22  12022  		dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
c0c050c58d8409 Michael Chan       2015-10-22  12023  		goto init_err_disable;
c0c050c58d8409 Michael Chan       2015-10-22  12024  	}
c0c050c58d8409 Michael Chan       2015-10-22  12025  
c0c050c58d8409 Michael Chan       2015-10-22  12026  	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) != 0 &&
c0c050c58d8409 Michael Chan       2015-10-22  12027  	    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)) != 0) {
c0c050c58d8409 Michael Chan       2015-10-22  12028  		dev_err(&pdev->dev, "System does not support DMA, aborting\n");
3383176efc0fb0 Zhang Changzhong   2020-11-19  12029  		rc = -EIO;
c54bc3ced51066 Michael Chan       2020-11-20  12030  		goto init_err_release;
c0c050c58d8409 Michael Chan       2015-10-22  12031  	}
c0c050c58d8409 Michael Chan       2015-10-22  12032  
c0c050c58d8409 Michael Chan       2015-10-22  12033  	pci_set_master(pdev);
c0c050c58d8409 Michael Chan       2015-10-22  12034  
c0c050c58d8409 Michael Chan       2015-10-22  12035  	bp->dev = dev;
c0c050c58d8409 Michael Chan       2015-10-22  12036  	bp->pdev = pdev;
c0c050c58d8409 Michael Chan       2015-10-22  12037  
8ae2473842bdbb Michael Chan       2020-05-04  12038  	/* Doorbell BAR bp->bar1 is mapped after bnxt_fw_init_one_p2()
8ae2473842bdbb Michael Chan       2020-05-04  12039  	 * determines the BAR size.
8ae2473842bdbb Michael Chan       2020-05-04  12040  	 */
c0c050c58d8409 Michael Chan       2015-10-22  12041  	bp->bar0 = pci_ioremap_bar(pdev, 0);
c0c050c58d8409 Michael Chan       2015-10-22  12042  	if (!bp->bar0) {
c0c050c58d8409 Michael Chan       2015-10-22  12043  		dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
c0c050c58d8409 Michael Chan       2015-10-22  12044  		rc = -ENOMEM;
c0c050c58d8409 Michael Chan       2015-10-22  12045  		goto init_err_release;
c0c050c58d8409 Michael Chan       2015-10-22  12046  	}
c0c050c58d8409 Michael Chan       2015-10-22  12047  
c0c050c58d8409 Michael Chan       2015-10-22  12048  	bp->bar2 = pci_ioremap_bar(pdev, 4);
c0c050c58d8409 Michael Chan       2015-10-22  12049  	if (!bp->bar2) {
c0c050c58d8409 Michael Chan       2015-10-22  12050  		dev_err(&pdev->dev, "Cannot map bar4 registers, aborting\n");
c0c050c58d8409 Michael Chan       2015-10-22  12051  		rc = -ENOMEM;
c0c050c58d8409 Michael Chan       2015-10-22  12052  		goto init_err_release;
c0c050c58d8409 Michael Chan       2015-10-22  12053  	}
c0c050c58d8409 Michael Chan       2015-10-22  12054  
6316ea6db93d87 Satish Baddipadige 2016-03-07  12055  	pci_enable_pcie_error_reporting(pdev);
6316ea6db93d87 Satish Baddipadige 2016-03-07  12056  
c0c050c58d8409 Michael Chan       2015-10-22  12057  	INIT_WORK(&bp->sp_task, bnxt_sp_task);
230d1f0de754b4 Michael Chan       2019-08-29  12058  	INIT_DELAYED_WORK(&bp->fw_reset_task, bnxt_fw_reset_task);
c0c050c58d8409 Michael Chan       2015-10-22  12059  
c0c050c58d8409 Michael Chan       2015-10-22  12060  	spin_lock_init(&bp->ntp_fltr_lock);
697197e5a17353 Michael Chan       2018-10-14  12061  #if BITS_PER_LONG == 32
697197e5a17353 Michael Chan       2018-10-14 @12062  	spin_lock_init(&bp->db_lock);
697197e5a17353 Michael Chan       2018-10-14  12063  #endif
c0c050c58d8409 Michael Chan       2015-10-22  12064  
c0c050c58d8409 Michael Chan       2015-10-22  12065  	bp->rx_ring_size = BNXT_DEFAULT_RX_RING_SIZE;
c0c050c58d8409 Michael Chan       2015-10-22  12066  	bp->tx_ring_size = BNXT_DEFAULT_TX_RING_SIZE;
c0c050c58d8409 Michael Chan       2015-10-22  12067  
18775aa8a91fcd Michael Chan       2017-10-26  12068  	bnxt_init_dflt_coal(bp);
51f307856b60e6 Michael Chan       2016-07-01  12069  
e99e88a9d2b067 Kees Cook          2017-10-16  12070  	timer_setup(&bp->timer, bnxt_timer, 0);
c0c050c58d8409 Michael Chan       2015-10-22  12071  	bp->current_interval = BNXT_TIMER_INTERVAL;
c0c050c58d8409 Michael Chan       2015-10-22  12072  
442a35a5a7aa72 Jakub Kicinski     2020-07-09  12073  	bp->vxlan_fw_dst_port_id = INVALID_HW_RING_ID;
442a35a5a7aa72 Jakub Kicinski     2020-07-09  12074  	bp->nge_fw_dst_port_id = INVALID_HW_RING_ID;
442a35a5a7aa72 Jakub Kicinski     2020-07-09  12075  
caefe526d7b5af Michael Chan       2015-12-09  12076  	clear_bit(BNXT_STATE_OPEN, &bp->state);
c0c050c58d8409 Michael Chan       2015-10-22  12077  	return 0;
c0c050c58d8409 Michael Chan       2015-10-22  12078  
c0c050c58d8409 Michael Chan       2015-10-22  12079  init_err_release:
17086399c113d9 Sathya Perla       2017-02-20  12080  	bnxt_unmap_bars(bp, pdev);
c0c050c58d8409 Michael Chan       2015-10-22  12081  	pci_release_regions(pdev);
c0c050c58d8409 Michael Chan       2015-10-22  12082  
c0c050c58d8409 Michael Chan       2015-10-22  12083  init_err_disable:
c0c050c58d8409 Michael Chan       2015-10-22  12084  	pci_disable_device(pdev);
c0c050c58d8409 Michael Chan       2015-10-22  12085  
c0c050c58d8409 Michael Chan       2015-10-22  12086  init_err:
c0c050c58d8409 Michael Chan       2015-10-22  12087  	return rc;
c0c050c58d8409 Michael Chan       2015-10-22  12088  }
c0c050c58d8409 Michael Chan       2015-10-22  12089  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
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Re: [PATCH net-next v2 04/11] bnxt_en: introduce new firmware message API based on DMA pools

[Guenter Roeck]

On Sun, Aug 29, 2021 at 03:34:59AM -0400, Michael Chan wrote:
> From: Edwin Peer <edwin.peer@broadcom.com>
> 
> This change constitutes a major step towards supporting multiple
> firmware commands in flight by maintaining a separate response buffer
> for the duration of each request. These firmware commands are also
> known as Hardware Resource Manager (HWRM) commands.  Using separate
> response buffers requires an API change in order for callers to be
> able to free the buffer when done.
> 

parisc:allmodconfig, and probably others:

drivers/net/ethernet/broadcom/bnxt/bnxt.c: In function 'bnxt_init_board':
drivers/net/ethernet/broadcom/bnxt/bnxt.c:12280:27: error: 'struct bnxt' has no member named 'db_lock'

There is a difference between "#ifdef writeq" and "#if BITS_PER_LONG == 32".

Guenter

Re: [PATCH net-next v2 04/11] bnxt_en: introduce new firmware message API based on DMA pools

[Michael Chan]

On Wed, Sep 1, 2021 at 9:57 AM Guenter Roeck <linux@roeck-us.net> wrote:
>
> On Sun, Aug 29, 2021 at 03:34:59AM -0400, Michael Chan wrote:
> > From: Edwin Peer <edwin.peer@broadcom.com>
> >
> > This change constitutes a major step towards supporting multiple
> > firmware commands in flight by maintaining a separate response buffer
> > for the duration of each request. These firmware commands are also
> > known as Hardware Resource Manager (HWRM) commands.  Using separate
> > response buffers requires an API change in order for callers to be
> > able to free the buffer when done.
> >
>
> parisc:allmodconfig, and probably others:
>
> drivers/net/ethernet/broadcom/bnxt/bnxt.c: In function 'bnxt_init_board':
> drivers/net/ethernet/broadcom/bnxt/bnxt.c:12280:27: error: 'struct bnxt' has no member named 'db_lock'
>
> There is a difference between "#ifdef writeq" and "#if BITS_PER_LONG == 32".

Yes.  It is already fixed in this commit:

c6132f6f2e682c958f7022ecfd8bec35723a1a9d
bnxt_en: Fix 64-bit doorbell operation on 32-bit kernels

Thanks.