[net-next v2 00/14][pull request] 100GbE Intel Wired LAN Driver Updates 2019-11-06

[net-next v2 00/14][pull request] 100GbE Intel Wired LAN Driver Updates 2019-11-06

[Jeff Kirsher]

This series contains updates to ice driver only.

Jesse implements set_eeprom functionality in ethtool by adding functions
to enable reading of the NVM image.

Scott adds ethtool -m support so that we can read eeprom data on SFP/OSFP
modules.

Anirudh updates the return value to properly reflect when SRIOV is not
supported.

Md Fahad updates the driver to handle a change in the NVM, where the
boot configuration section was moved to the Preserved Field Area (PFA)
of the NVM.

Paul resolves an issue when DCBx requests non-contiguous TCs, transmit
hangs could occur, so configure a default traffic class (TC0) in these
cases to prevent traffic hangs.  Adds a print statement to notify the
user when unsupported modules are inserted.

Bruce fixes up the driver unload code flow to ensure we do not clear the
interrupt scheme until the reset is complete, otherwise a hardware error
may occur.

Dave updates the DCB initialization to set is_sw_lldp boolean when the
firmware has been detected to be in an untenable state.  This will
ensure that the firmware is in a known state.

Michal saves off the PCI state and I/O BARs address after PCI bus reset
so that after the reset, device registers can be read.  Also adds a NULL
pointer check to prevent a potential kernel panic.

Mitch resolves an issue where VF's on PF's other than 0 were not seeing
resets by using the per-PF VF ID instead of the absolute VF ID.

Krzysztof does some code cleanup to remove a unneeded wrapper and
reduces the code complexity.

Brett reduces confusion by changing the name of ice_vc_dis_vf() to
ice_vc_reset_vf() to better describe what the function is actually
doing.

v2: dropped patch 3 "ice: Add support for FW recovery mode detection"
    from the origin al series, while Ani makes changes based on
    community feedback to implement devlink into the changes.

The following are changes since commit a3ead21d6eec4d18b48466c7b978566bc9cab676:
  Merge tag 'wireless-drivers-next-2019-11-05' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue 100GbE

Anirudh Venkataramanan (1):
  ice: Fix return value when SR-IOV is not supported

Brett Creeley (1):
  ice: Rename VF function ice_vc_dis_vf to match its behavior

Bruce Allan (1):
  ice: fix driver unload flow

Dave Ertman (1):
  ice: Adjust DCB INIT for SW mode

Jesse Brandeburg (1):
  ice: implement set_eeprom functionality

Krzysztof Kazimierczak (1):
  ice: Get rid of ice_cleanup_header

Md Fahad Iqbal Polash (1):
  ice: Update Boot Configuration Section read of NVM

Michal Swiatkowski (2):
  ice: save PCI state in probe
  ice: Check for null pointer dereference when setting rings

Mitch Williams (1):
  ice: write register with correct offset

Paul Greenwalt (3):
  ice: handle DCBx non-contiguous TC request
  ice: print unsupported module message
  ice: print PCI link speed and width

Scott W Taylor (1):
  ice: add ethtool -m support for reading i2c eeprom modules

 .../net/ethernet/intel/ice/ice_adminq_cmd.h   |  36 ++
 drivers/net/ethernet/intel/ice/ice_common.c   | 112 ++++++
 drivers/net/ethernet/intel/ice/ice_common.h   |  11 +-
 drivers/net/ethernet/intel/ice/ice_dcb.c      |   6 +-
 drivers/net/ethernet/intel/ice/ice_dcb_lib.c  | 141 +++++--
 drivers/net/ethernet/intel/ice/ice_ethtool.c  | 272 ++++++++++++-
 .../net/ethernet/intel/ice/ice_hw_autogen.h   |   2 +
 drivers/net/ethernet/intel/ice/ice_lib.c      |  24 ++
 drivers/net/ethernet/intel/ice/ice_lib.h      |   2 +
 drivers/net/ethernet/intel/ice/ice_main.c     |  32 +-
 drivers/net/ethernet/intel/ice/ice_nvm.c      | 380 +++++++++++++-----
 drivers/net/ethernet/intel/ice/ice_nvm.h      |  80 ++++
 drivers/net/ethernet/intel/ice/ice_txrx.c     |  27 +-
 drivers/net/ethernet/intel/ice/ice_type.h     |   3 +
 .../net/ethernet/intel/ice/ice_virtchnl_pf.c  |  16 +-
 15 files changed, 948 insertions(+), 196 deletions(-)
 create mode 100644 drivers/net/ethernet/intel/ice/ice_nvm.h

-- 
2.21.0

[net-next v2 01/14] ice: implement set_eeprom functionality

[Jeff Kirsher]

From: Jesse Brandeburg <jesse.brandeburg@intel.com>

The driver needs set_eeprom to work so that it can
program the onboard NVM using our update application.

Add functions that are necessary to enable reading the
NVM image.  They implement basic functionality to lock,
read, unlock during an NVM read.  Also remove shadow ram
functionality since it is no longer used. In addition
move a few function declarations into ice_nvm.h.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Co-developed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 .../net/ethernet/intel/ice/ice_adminq_cmd.h   |   3 +
 drivers/net/ethernet/intel/ice/ice_common.h   |   4 +-
 drivers/net/ethernet/intel/ice/ice_ethtool.c  | 125 ++++++-
 .../net/ethernet/intel/ice/ice_hw_autogen.h   |   2 +
 drivers/net/ethernet/intel/ice/ice_lib.c      |  24 ++
 drivers/net/ethernet/intel/ice/ice_lib.h      |   2 +
 drivers/net/ethernet/intel/ice/ice_nvm.c      | 341 +++++++++++++-----
 drivers/net/ethernet/intel/ice/ice_nvm.h      |  79 ++++
 8 files changed, 468 insertions(+), 112 deletions(-)
 create mode 100644 drivers/net/ethernet/intel/ice/ice_nvm.h

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 023e3d2fee5f..feadf144d7c4 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -1170,6 +1170,8 @@ struct ice_aqc_nvm {
 	__le32 addr_low;
 };
 
+#define ICE_AQC_NVM_START_POINT			0
+
 /* NVM Checksum Command (direct, 0x0706) */
 struct ice_aqc_nvm_checksum {
 	u8 flags;
@@ -1673,6 +1675,7 @@ enum ice_aq_err {
 	ICE_AQ_RC_ENOMEM	= 9,  /* Out of memory */
 	ICE_AQ_RC_EBUSY		= 12, /* Device or resource busy */
 	ICE_AQ_RC_EEXIST	= 13, /* Object already exists */
+	ICE_AQ_RC_EINVAL	= 14, /* Invalid argument */
 	ICE_AQ_RC_ENOSPC	= 16, /* No space left or allocation failure */
 	ICE_AQ_RC_ENOSYS	= 17, /* Function not implemented */
 	ICE_AQ_RC_ENOSEC	= 24, /* Missing security manifest */
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index c3df92f57777..8a409edef38a 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -6,6 +6,7 @@
 
 #include "ice.h"
 #include "ice_type.h"
+#include "ice_nvm.h"
 #include "ice_flex_pipe.h"
 #include "ice_switch.h"
 #include <linux/avf/virtchnl.h>
@@ -32,9 +33,6 @@ enum ice_status
 ice_acquire_res(struct ice_hw *hw, enum ice_aq_res_ids res,
 		enum ice_aq_res_access_type access, u32 timeout);
 void ice_release_res(struct ice_hw *hw, enum ice_aq_res_ids res);
-enum ice_status ice_init_nvm(struct ice_hw *hw);
-enum ice_status
-ice_read_sr_buf(struct ice_hw *hw, u16 offset, u16 *words, u16 *data);
 enum ice_status
 ice_sq_send_cmd(struct ice_hw *hw, struct ice_ctl_q_info *cq,
 		struct ice_aq_desc *desc, void *buf, u16 buf_size,
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 7e779060069c..c270fbbc25bb 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -226,12 +226,12 @@ static void ice_set_msglevel(struct net_device *netdev, u32 data)
 #endif /* !CONFIG_DYNAMIC_DEBUG */
 }
 
-static int ice_get_eeprom_len(struct net_device *netdev)
+static int ice_get_eeprom_len(struct net_device __always_unused *netdev)
 {
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_pf *pf = np->vsi->back;
-
-	return (int)(pf->hw.nvm.sr_words * sizeof(u16));
+	/* currently using a magic number of 0xFFFFFF to allow
+	 * reads within the 16MB range of the NVM
+	 */
+	return 0xFFFFFF;
 }
 
 static int
@@ -239,42 +239,127 @@ ice_get_eeprom(struct net_device *netdev, struct ethtool_eeprom *eeprom,
 	       u8 *bytes)
 {
 	struct ice_netdev_priv *np = netdev_priv(netdev);
-	u16 first_word, last_word, nwords;
 	struct ice_vsi *vsi = np->vsi;
 	struct ice_pf *pf = vsi->back;
 	struct ice_hw *hw = &pf->hw;
 	enum ice_status status;
-	struct device *dev;
 	int ret = 0;
-	u16 *buf;
+	u32 magic;
+	u8 *buf;
+
+	if (!eeprom->len || eeprom->len > ice_get_eeprom_len(netdev))
+		return -EINVAL;
+
+	magic = hw->vendor_id | (hw->device_id << 16);
+	if (eeprom->magic && eeprom->magic != magic) {
+		struct ice_nvm_access_cmd *nvm;
+		union ice_nvm_access_data *data;
+
+		nvm = (struct ice_nvm_access_cmd *)eeprom;
+		data = (union ice_nvm_access_data *)bytes;
+
+		netdev_dbg(netdev, "GEEPROM cmd 0x%08x, config 0x%08x, offset 0x%08x, data_size 0x%08x\n",
+			   nvm->command, nvm->config, nvm->offset,
+			   nvm->data_size);
+
+		status = ice_handle_nvm_access(hw, nvm, data);
 
-	dev = &pf->pdev->dev;
+		ice_debug_array(hw, ICE_DBG_NVM, 16, 1, (u8 *)data,
+				nvm->data_size);
 
-	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
+		if (status) {
+			int err = ice_status_to_errno(status);
 
-	first_word = eeprom->offset >> 1;
-	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
-	nwords = last_word - first_word + 1;
+			netdev_info(netdev, "NVM read failed with status %d, error %d\n",
+				    status, err);
 
-	buf = devm_kcalloc(dev, nwords, sizeof(u16), GFP_KERNEL);
+			return err;
+		}
+
+		return 0;
+	}
+
+	eeprom->magic = magic;
+	netdev_dbg(netdev, "GEEPROM cmd 0x%08x, offset 0x%08x, len 0x%08x\n",
+		   eeprom->cmd, eeprom->offset, eeprom->len);
+
+	buf = kzalloc(eeprom->len, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
-	status = ice_read_sr_buf(hw, first_word, &nwords, buf);
+	status = ice_acquire_nvm(hw, ICE_RES_READ);
 	if (status) {
-		dev_err(dev, "ice_read_sr_buf failed, err %d aq_err %d\n",
+		dev_err(&pf->pdev->dev, "ice_acquire_nvm failed: %d %d\n",
 			status, hw->adminq.sq_last_status);
-		eeprom->len = sizeof(u16) * nwords;
 		ret = -EIO;
 		goto out;
 	}
 
-	memcpy(bytes, (u8 *)buf + (eeprom->offset & 1), eeprom->len);
+	/* kernel only issues 4kB reads so we are good to read 4KB at a time */
+	status = ice_aq_read_nvm(hw, ICE_AQC_NVM_START_POINT, eeprom->offset,
+				 eeprom->len, buf, true, false, NULL);
+	if (status == ICE_ERR_AQ_ERROR &&
+	    hw->adminq.sq_last_status == ICE_AQ_RC_EINVAL) {
+		/* do nothing, we reached the end */
+		ice_release_nvm(hw);
+		goto out;
+	} else if (status) {
+		dev_err(&pf->pdev->dev, "ice_aq_read_nvm failed: %d %d\n",
+			status, hw->adminq.sq_last_status);
+		ret = -EIO;
+		ice_release_nvm(hw);
+		goto out;
+	}
+
+	ice_release_nvm(hw);
+
+	memcpy(bytes, buf + eeprom->offset, eeprom->len);
 out:
-	devm_kfree(dev, buf);
+	kfree(buf);
 	return ret;
 }
 
+static int
+ice_set_eeprom(struct net_device *netdev, struct ethtool_eeprom *eeprom,
+	       u8 *bytes)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_hw *hw = &np->vsi->back->hw;
+	struct ice_pf *pf = np->vsi->back;
+	union ice_nvm_access_data *data;
+	struct ice_nvm_access_cmd *nvm;
+	enum ice_status status = 0;
+	int err = 0;
+	u32 magic;
+
+	/* normal ethtool set_eeprom is not supported */
+	nvm = (struct ice_nvm_access_cmd *)eeprom;
+	data = (union ice_nvm_access_data *)bytes;
+	magic = hw->vendor_id | (hw->device_id << 16);
+
+	netdev_dbg(netdev, "SEEPROM cmd 0x%08x, config 0x%08x, offset 0x%08x, data_size 0x%08x\n",
+		   nvm->command, nvm->config, nvm->offset, nvm->data_size);
+	ice_debug_array(hw, ICE_DBG_NVM, 16, 1, (u8 *)data, nvm->data_size);
+
+	if (eeprom->magic == magic)
+		err = -EOPNOTSUPP;
+	/* check for NVM access method */
+	else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
+		err = -EINVAL;
+	else if (ice_is_reset_in_progress(pf->state))
+		err = -EBUSY;
+	else
+		status = ice_handle_nvm_access(hw, nvm, data);
+
+	if (status) {
+		err = ice_status_to_errno(status);
+		netdev_info(netdev, "NVM write failed with status %d, error %d\n",
+			    status, err);
+	}
+
+	return err;
+}
+
 /**
  * ice_active_vfs - check if there are any active VFs
  * @pf: board private structure
@@ -3467,6 +3552,7 @@ static const struct ethtool_ops ice_ethtool_ops = {
 	.get_link		= ethtool_op_get_link,
 	.get_eeprom_len		= ice_get_eeprom_len,
 	.get_eeprom		= ice_get_eeprom,
+	.set_eeprom		= ice_set_eeprom,
 	.get_coalesce		= ice_get_coalesce,
 	.set_coalesce		= ice_set_coalesce,
 	.get_strings		= ice_get_strings,
@@ -3502,6 +3588,7 @@ static const struct ethtool_ops ice_ethtool_safe_mode_ops = {
 	.set_msglevel		= ice_set_msglevel,
 	.get_eeprom_len		= ice_get_eeprom_len,
 	.get_eeprom		= ice_get_eeprom,
+	.set_eeprom		= ice_set_eeprom,
 	.get_strings		= ice_get_strings,
 	.get_ethtool_stats	= ice_get_ethtool_stats,
 	.get_sset_count		= ice_get_sset_count,
diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
index 152fbd556e9b..9497e990139c 100644
--- a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -91,6 +91,7 @@
 #define QRXFLXP_CNTXT_RXDID_IDX_M		ICE_M(0x3F, 0)
 #define QRXFLXP_CNTXT_RXDID_PRIO_S		8
 #define QRXFLXP_CNTXT_RXDID_PRIO_M		ICE_M(0x7, 8)
+#define GL_FWSTS				0x00083048
 #define GLGEN_RSTAT				0x000B8188
 #define GLGEN_RSTAT_DEVSTATE_M			ICE_M(0x3, 0)
 #define GLGEN_RSTCTL				0x000B8180
@@ -267,6 +268,7 @@
 #define VP_MDET_TX_TCLAN_VALID_M		BIT(0)
 #define VP_MDET_TX_TDPU(_VF)			(0x00040000 + ((_VF) * 4))
 #define VP_MDET_TX_TDPU_VALID_M			BIT(0)
+#define GL_MNG_FWSM				0x000B6134
 #define GLNVM_FLA				0x000B6108
 #define GLNVM_FLA_LOCKED_M			BIT(6)
 #define GLNVM_GENS				0x000B6100
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index b1e96cac5b1f..3cfd11f41882 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -2609,3 +2609,27 @@ ice_vsi_cfg_mac_fltr(struct ice_vsi *vsi, const u8 *macaddr, bool set)
 	ice_free_fltr_list(&vsi->back->pdev->dev, &tmp_add_list);
 	return status;
 }
+
+/**
+ * ice_status_to_errno - convert from enum ice_status to Linux errno
+ * @err: ice_status value to convert
+ */
+int ice_status_to_errno(enum ice_status err)
+{
+	switch (err) {
+	case ICE_SUCCESS:
+		return 0;
+	case ICE_ERR_DOES_NOT_EXIST:
+		return -ENOENT;
+	case ICE_ERR_OUT_OF_RANGE:
+		return -ENOTTY;
+	case ICE_ERR_PARAM:
+		return -EINVAL;
+	case ICE_ERR_NO_MEMORY:
+		return -ENOMEM;
+	case ICE_ERR_MAX_LIMIT:
+		return -EAGAIN;
+	default:
+		return -EINVAL;
+	}
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.h b/drivers/net/ethernet/intel/ice/ice_lib.h
index 8d5a7978e066..d8cc03197878 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_lib.h
@@ -89,6 +89,8 @@ void ice_update_rx_ring_stats(struct ice_ring *ring, u64 pkts, u64 bytes);
 
 void ice_vsi_cfg_frame_size(struct ice_vsi *vsi);
 
+int ice_status_to_errno(enum ice_status err);
+
 u32 ice_intrl_usec_to_reg(u8 intrl, u8 gran);
 
 char *ice_nvm_version_str(struct ice_hw *hw);
diff --git a/drivers/net/ethernet/intel/ice/ice_nvm.c b/drivers/net/ethernet/intel/ice/ice_nvm.c
index bcb431f1bd92..bd19ce9b5bfd 100644
--- a/drivers/net/ethernet/intel/ice/ice_nvm.c
+++ b/drivers/net/ethernet/intel/ice/ice_nvm.c
@@ -11,13 +11,15 @@
  * @length: length of the section to be read (in bytes from the offset)
  * @data: command buffer (size [bytes] = length)
  * @last_command: tells if this is the last command in a series
+ * @read_shadow_ram: tell if this is a shadow RAM read
  * @cd: pointer to command details structure or NULL
  *
  * Read the NVM using the admin queue commands (0x0701)
  */
-static enum ice_status
+enum ice_status
 ice_aq_read_nvm(struct ice_hw *hw, u16 module_typeid, u32 offset, u16 length,
-		void *data, bool last_command, struct ice_sq_cd *cd)
+		void *data, bool last_command, bool read_shadow_ram,
+		struct ice_sq_cd *cd)
 {
 	struct ice_aq_desc desc;
 	struct ice_aqc_nvm *cmd;
@@ -30,6 +32,9 @@ ice_aq_read_nvm(struct ice_hw *hw, u16 module_typeid, u32 offset, u16 length,
 
 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_nvm_read);
 
+	if (!read_shadow_ram && module_typeid == ICE_AQC_NVM_START_POINT)
+		cmd->cmd_flags |= ICE_AQC_NVM_FLASH_ONLY;
+
 	/* If this is the last command in a series, set the proper flag. */
 	if (last_command)
 		cmd->cmd_flags |= ICE_AQC_NVM_LAST_CMD;
@@ -98,8 +103,9 @@ ice_read_sr_aq(struct ice_hw *hw, u32 offset, u16 words, u16 *data,
 	 * So do this conversion while calling ice_aq_read_nvm.
 	 */
 	if (!status)
-		status = ice_aq_read_nvm(hw, 0, 2 * offset, 2 * words, data,
-					 last_command, NULL);
+		status = ice_aq_read_nvm(hw, ICE_AQC_NVM_START_POINT,
+					 2 * offset, 2 * words, data,
+					 last_command, true, NULL);
 
 	return status;
 }
@@ -124,63 +130,6 @@ ice_read_sr_word_aq(struct ice_hw *hw, u16 offset, u16 *data)
 	return status;
 }
 
-/**
- * ice_read_sr_buf_aq - Reads Shadow RAM buf via AQ
- * @hw: pointer to the HW structure
- * @offset: offset of the Shadow RAM word to read (0x000000 - 0x001FFF)
- * @words: (in) number of words to read; (out) number of words actually read
- * @data: words read from the Shadow RAM
- *
- * Reads 16 bit words (data buf) from the SR using the ice_read_sr_aq
- * method. Ownership of the NVM is taken before reading the buffer and later
- * released.
- */
-static enum ice_status
-ice_read_sr_buf_aq(struct ice_hw *hw, u16 offset, u16 *words, u16 *data)
-{
-	enum ice_status status;
-	bool last_cmd = false;
-	u16 words_read = 0;
-	u16 i = 0;
-
-	do {
-		u16 read_size, off_w;
-
-		/* Calculate number of bytes we should read in this step.
-		 * It's not allowed to read more than one page at a time or
-		 * to cross page boundaries.
-		 */
-		off_w = offset % ICE_SR_SECTOR_SIZE_IN_WORDS;
-		read_size = off_w ?
-			min_t(u16, *words,
-			      (ICE_SR_SECTOR_SIZE_IN_WORDS - off_w)) :
-			min_t(u16, (*words - words_read),
-			      ICE_SR_SECTOR_SIZE_IN_WORDS);
-
-		/* Check if this is last command, if so set proper flag */
-		if ((words_read + read_size) >= *words)
-			last_cmd = true;
-
-		status = ice_read_sr_aq(hw, offset, read_size,
-					data + words_read, last_cmd);
-		if (status)
-			goto read_nvm_buf_aq_exit;
-
-		/* Increment counter for words already read and move offset to
-		 * new read location
-		 */
-		words_read += read_size;
-		offset += read_size;
-	} while (words_read < *words);
-
-	for (i = 0; i < *words; i++)
-		data[i] = le16_to_cpu(((__force __le16 *)data)[i]);
-
-read_nvm_buf_aq_exit:
-	*words = words_read;
-	return status;
-}
-
 /**
  * ice_acquire_nvm - Generic request for acquiring the NVM ownership
  * @hw: pointer to the HW structure
@@ -188,7 +137,7 @@ ice_read_sr_buf_aq(struct ice_hw *hw, u16 offset, u16 *words, u16 *data)
  *
  * This function will request NVM ownership.
  */
-static enum ice_status
+enum ice_status
 ice_acquire_nvm(struct ice_hw *hw, enum ice_aq_res_access_type access)
 {
 	if (hw->nvm.blank_nvm_mode)
@@ -203,7 +152,7 @@ ice_acquire_nvm(struct ice_hw *hw, enum ice_aq_res_access_type access)
  *
  * This function will release NVM ownership.
  */
-static void ice_release_nvm(struct ice_hw *hw)
+void ice_release_nvm(struct ice_hw *hw)
 {
 	if (hw->nvm.blank_nvm_mode)
 		return;
@@ -219,8 +168,8 @@ static void ice_release_nvm(struct ice_hw *hw)
  *
  * Reads one 16 bit word from the Shadow RAM using the ice_read_sr_word_aq.
  */
-static enum ice_status
-ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data)
+static enum
+ice_status ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data)
 {
 	enum ice_status status;
 
@@ -292,31 +241,6 @@ enum ice_status ice_init_nvm(struct ice_hw *hw)
 	return status;
 }
 
-/**
- * ice_read_sr_buf - Reads Shadow RAM buf and acquire lock if necessary
- * @hw: pointer to the HW structure
- * @offset: offset of the Shadow RAM word to read (0x000000 - 0x001FFF)
- * @words: (in) number of words to read; (out) number of words actually read
- * @data: words read from the Shadow RAM
- *
- * Reads 16 bit words (data buf) from the SR using the ice_read_nvm_buf_aq
- * method. The buf read is preceded by the NVM ownership take
- * and followed by the release.
- */
-enum ice_status
-ice_read_sr_buf(struct ice_hw *hw, u16 offset, u16 *words, u16 *data)
-{
-	enum ice_status status;
-
-	status = ice_acquire_nvm(hw, ICE_RES_READ);
-	if (!status) {
-		status = ice_read_sr_buf_aq(hw, offset, words, data);
-		ice_release_nvm(hw);
-	}
-
-	return status;
-}
-
 /**
  * ice_nvm_validate_checksum
  * @hw: pointer to the HW struct
@@ -347,3 +271,240 @@ enum ice_status ice_nvm_validate_checksum(struct ice_hw *hw)
 
 	return status;
 }
+
+/**
+ * ice_nvm_access_get_features - Return the NVM access features structure
+ * @cmd: NVM access command to process
+ * @data: storage for the driver NVM features
+ *
+ * Fill in the data section of the NVM access request with a copy of the NVM
+ * features structure.
+ */
+static enum ice_status
+ice_nvm_access_get_features(struct ice_nvm_access_cmd *cmd,
+			    union ice_nvm_access_data *data)
+{
+	/* The provided data_size must be at least as large as our NVM
+	 * features structure. A larger size should not be treated as an
+	 * error, to allow future extensions to to the features structure to
+	 * work on older drivers.
+	 */
+	if (cmd->data_size < sizeof(struct ice_nvm_features))
+		return ICE_ERR_NO_MEMORY;
+
+	/* Initialize the data buffer to zeros */
+	memset(data, 0, cmd->data_size);
+
+	/* Fill in the features data */
+	data->drv_features.major = ICE_NVM_ACCESS_MAJOR_VER;
+	data->drv_features.minor = ICE_NVM_ACCESS_MINOR_VER;
+	data->drv_features.size = sizeof(struct ice_nvm_features);
+	data->drv_features.features[0] = ICE_NVM_FEATURES_0_REG_ACCESS;
+
+	return 0;
+}
+
+/**
+ * ice_nvm_access_get_module - Helper function to read module value
+ * @cmd: NVM access command structure
+ *
+ * Reads the module value out of the NVM access config field.
+ */
+static u32 ice_nvm_access_get_module(struct ice_nvm_access_cmd *cmd)
+{
+	return ((cmd->config & ICE_NVM_CFG_MODULE_M) >> ICE_NVM_CFG_MODULE_S);
+}
+
+/**
+ * ice_nvm_access_get_flags - Helper function to read flags value
+ * @cmd: NVM access command structure
+ *
+ * Reads the flags value out of the NVM access config field.
+ */
+static u32 ice_nvm_access_get_flags(struct ice_nvm_access_cmd *cmd)
+{
+	return ((cmd->config & ICE_NVM_CFG_FLAGS_M) >> ICE_NVM_CFG_FLAGS_S);
+}
+
+/**
+ * ice_nvm_access_get_adapter - Helper function to read adapter info
+ * @cmd: NVM access command structure
+ *
+ * Read the adapter info value out of the NVM access config field.
+ */
+static u32 ice_nvm_access_get_adapter(struct ice_nvm_access_cmd *cmd)
+{
+	return ((cmd->config & ICE_NVM_CFG_ADAPTER_INFO_M) >>
+		ICE_NVM_CFG_ADAPTER_INFO_S);
+}
+
+/**
+ * ice_validate_nvm_rw_reg - Check than an NVM access request is valid
+ * @cmd: NVM access command structure
+ *
+ * Validates that an NVM access structure is request to read or write a valid
+ * register offset. First validates that the module and flags are correct, and
+ * then ensures that the register offset is one of the accepted registers.
+ */
+static enum ice_status
+ice_validate_nvm_rw_reg(struct ice_nvm_access_cmd *cmd)
+{
+	u32 module, flags, offset;
+	u16 i;
+
+	module = ice_nvm_access_get_module(cmd);
+	flags = ice_nvm_access_get_flags(cmd);
+	offset = cmd->offset;
+
+	/* Make sure the module and flags indicate a read/write request */
+	if (module != ICE_NVM_REG_RW_MODULE ||
+	    flags != ICE_NVM_REG_RW_FLAGS ||
+	    cmd->data_size != FIELD_SIZEOF(union ice_nvm_access_data, regval))
+		return ICE_ERR_PARAM;
+
+	switch (offset) {
+	case GL_HICR:
+	case GL_HICR_EN: /* Note, this register is read only */
+	case GL_FWSTS:
+	case GL_MNG_FWSM:
+	case GLGEN_CSR_DEBUG_C:
+	case GLGEN_RSTAT:
+	case GLPCI_LBARCTRL:
+	case GLNVM_GENS:
+	case GLNVM_FLA:
+	case PF_FUNC_RID:
+		return 0;
+	default:
+		break;
+	}
+
+	for (i = 0; i <= ICE_NVM_ACCESS_GL_HIDA_MAX; i++)
+		if (offset == (u32)GL_HIDA(i))
+			return 0;
+
+	for (i = 0; i <= ICE_NVM_ACCESS_GL_HIBA_MAX; i++)
+		if (offset == (u32)GL_HIBA(i))
+			return 0;
+
+	/* All other register offsets are not valid */
+	return ICE_ERR_OUT_OF_RANGE;
+}
+
+/**
+ * ice_nvm_access_read - Handle an NVM read request
+ * @hw: pointer to the HW struct
+ * @cmd: NVM access command to process
+ * @data: storage for the register value read
+ *
+ * Process an NVM access request to read a register.
+ */
+static enum ice_status
+ice_nvm_access_read(struct ice_hw *hw, struct ice_nvm_access_cmd *cmd,
+		    union ice_nvm_access_data *data)
+{
+	enum ice_status status;
+
+	/* Always initialize the output data, even on failure */
+	memset(data, 0, cmd->data_size);
+
+	/* Make sure this is a valid read/write access request */
+	status = ice_validate_nvm_rw_reg(cmd);
+	if (status)
+		return status;
+
+	ice_debug(hw, ICE_DBG_NVM, "NVM access: reading register %08x\n",
+		  cmd->offset);
+
+	/* Read the register and store the contents in the data field */
+	data->regval = rd32(hw, cmd->offset);
+
+	return 0;
+}
+
+/**
+ * ice_nvm_access_write - Handle an NVM write request
+ * @hw: pointer to the HW struct
+ * @cmd: NVM access command to process
+ * @data: NVM access data to write
+ *
+ * Process an NVM access request to write a register.
+ */
+static enum ice_status
+ice_nvm_access_write(struct ice_hw *hw, struct ice_nvm_access_cmd *cmd,
+		     union ice_nvm_access_data *data)
+{
+	enum ice_status status;
+
+	/* Make sure this is a valid read/write access request */
+	status = ice_validate_nvm_rw_reg(cmd);
+	if (status)
+		return status;
+
+	/* Reject requests to write to read-only registers */
+	switch (cmd->offset) {
+	case GL_HICR_EN:
+	case GLGEN_RSTAT:
+		return ICE_ERR_OUT_OF_RANGE;
+	default:
+		break;
+	}
+
+	ice_debug(hw, ICE_DBG_NVM,
+		  "NVM access: writing register %08x with value %08x\n",
+		  cmd->offset, data->regval);
+
+	/* Write the data field to the specified register */
+	wr32(hw, cmd->offset, data->regval);
+
+	return 0;
+}
+
+/**
+ * ice_handle_nvm_access - Handle an NVM access request
+ * @hw: pointer to the HW struct
+ * @cmd: NVM access command info
+ * @data: pointer to read or return data
+ *
+ * Process an NVM access request. Read the command structure information and
+ * determine if it is valid. If not, report an error indicating the command
+ * was invalid.
+ *
+ * For valid commands, perform the necessary function, copying the data into
+ * the provided data buffer.
+ */
+enum ice_status
+ice_handle_nvm_access(struct ice_hw *hw, struct ice_nvm_access_cmd *cmd,
+		      union ice_nvm_access_data *data)
+{
+	u32 module, flags, adapter_info;
+
+	/* Extended flags are currently reserved and must be zero */
+	if ((cmd->config & ICE_NVM_CFG_EXT_FLAGS_M) != 0)
+		return ICE_ERR_PARAM;
+
+	/* Adapter info must match the HW device ID */
+	adapter_info = ice_nvm_access_get_adapter(cmd);
+	if (adapter_info != hw->device_id)
+		return ICE_ERR_PARAM;
+
+	switch (cmd->command) {
+	case ICE_NVM_CMD_READ:
+		module = ice_nvm_access_get_module(cmd);
+		flags = ice_nvm_access_get_flags(cmd);
+
+		/* Getting the driver's NVM features structure shares the same
+		 * command type as reading a register. Read the config field
+		 * to determine if this is a request to get features.
+		 */
+		if (module == ICE_NVM_GET_FEATURES_MODULE &&
+		    flags == ICE_NVM_GET_FEATURES_FLAGS &&
+		    cmd->offset == 0)
+			return ice_nvm_access_get_features(cmd, data);
+		else
+			return ice_nvm_access_read(hw, cmd, data);
+	case ICE_NVM_CMD_WRITE:
+		return ice_nvm_access_write(hw, cmd, data);
+	default:
+		return ICE_ERR_PARAM;
+	}
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_nvm.h b/drivers/net/ethernet/intel/ice/ice_nvm.h
new file mode 100644
index 000000000000..75d167b7ebe3
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_nvm.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019, Intel Corporation. */
+
+#ifndef _ICE_NVM_H_
+#define _ICE_NVM_H_
+
+#define ICE_NVM_CMD_READ		0x0000000B
+#define ICE_NVM_CMD_WRITE		0x0000000C
+
+/* NVM Access config bits */
+#define ICE_NVM_CFG_MODULE_M		ICE_M(0xFF, 0)
+#define ICE_NVM_CFG_MODULE_S		0
+#define ICE_NVM_CFG_FLAGS_M		ICE_M(0xF, 8)
+#define ICE_NVM_CFG_FLAGS_S		8
+#define ICE_NVM_CFG_EXT_FLAGS_M		ICE_M(0xF, 12)
+#define ICE_NVM_CFG_ADAPTER_INFO_M	ICE_M(0xFFFF, 16)
+#define ICE_NVM_CFG_ADAPTER_INFO_S	16
+
+/* NVM Read Get Driver Features */
+#define ICE_NVM_GET_FEATURES_MODULE	0xE
+#define ICE_NVM_GET_FEATURES_FLAGS	0xF
+
+/* NVM Read/Write Mapped Space */
+#define ICE_NVM_REG_RW_MODULE	0x0
+#define ICE_NVM_REG_RW_FLAGS	0x1
+
+#define ICE_NVM_ACCESS_MAJOR_VER	0
+#define ICE_NVM_ACCESS_MINOR_VER	5
+
+/* NVM Access feature flags. Other bits in the features field are reserved and
+ * should be set to zero when reporting the ice_nvm_features structure.
+ */
+#define ICE_NVM_FEATURES_0_REG_ACCESS	BIT(1)
+
+/* NVM Access Features */
+struct ice_nvm_features {
+	u8 major;		/* Major version (informational only) */
+	u8 minor;		/* Minor version (informational only) */
+	u16 size;		/* size of ice_nvm_features structure */
+	u8 features[12];	/* Array of feature bits */
+};
+
+/* NVM Access command */
+struct ice_nvm_access_cmd {
+	u32 command;		/* NVM command: READ or WRITE */
+	u32 config;		/* NVM command configuration */
+	u32 offset;		/* offset to read/write, in bytes */
+	u32 data_size;		/* size of data field, in bytes */
+};
+
+/* NVM Access data */
+union ice_nvm_access_data {
+	u32 regval;	/* Storage for register value */
+	struct ice_nvm_features drv_features; /* NVM features */
+};
+
+/* NVM Access registers */
+#define GL_HIDA(_i)			(0x00082000 + ((_i) * 4))
+#define GL_HIBA(_i)			(0x00081000 + ((_i) * 4))
+#define GL_HICR				0x00082040
+#define GL_HICR_EN			0x00082044
+#define GLGEN_CSR_DEBUG_C		0x00075750
+#define GLPCI_LBARCTRL			0x0009DE74
+
+#define ICE_NVM_ACCESS_GL_HIDA_MAX	15
+#define ICE_NVM_ACCESS_GL_HIBA_MAX	1023
+
+enum ice_status
+ice_handle_nvm_access(struct ice_hw *hw, struct ice_nvm_access_cmd *cmd,
+		      union ice_nvm_access_data *data);
+enum ice_status
+ice_acquire_nvm(struct ice_hw *hw, enum ice_aq_res_access_type access);
+void ice_release_nvm(struct ice_hw *hw);
+enum ice_status
+ice_aq_read_nvm(struct ice_hw *hw, u16 module_typeid, u32 offset, u16 length,
+		void *data, bool last_command, bool read_shadow_ram,
+		struct ice_sq_cd *cd);
+enum ice_status ice_init_nvm(struct ice_hw *hw);
+#endif /* _ICE_NVM_H_ */
-- 
2.21.0

[net-next v2 02/14] ice: add ethtool -m support for reading i2c eeprom modules

[Jeff Kirsher]

From: Scott W Taylor <scott.w.taylor@intel.com>

Implement ethtool -m support to read eeprom data from SFP/QSFP modules.

Signed-off-by: Scott W Taylor <scott.w.taylor@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 .../net/ethernet/intel/ice/ice_adminq_cmd.h   |  29 ++++
 drivers/net/ethernet/intel/ice/ice_common.c   |  46 ++++++
 drivers/net/ethernet/intel/ice/ice_common.h   |   4 +
 drivers/net/ethernet/intel/ice/ice_ethtool.c  | 147 ++++++++++++++++++
 4 files changed, 226 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index feadf144d7c4..6d24df5977a5 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -1147,6 +1147,33 @@ struct ice_aqc_set_port_id_led {
 	u8 rsvd[13];
 };
 
+/* Read/Write SFF EEPROM command (indirect 0x06EE) */
+struct ice_aqc_sff_eeprom {
+	u8 lport_num;
+	u8 lport_num_valid;
+#define ICE_AQC_SFF_PORT_NUM_VALID	BIT(0)
+	__le16 i2c_bus_addr;
+#define ICE_AQC_SFF_I2CBUS_7BIT_M	0x7F
+#define ICE_AQC_SFF_I2CBUS_10BIT_M	0x3FF
+#define ICE_AQC_SFF_I2CBUS_TYPE_M	BIT(10)
+#define ICE_AQC_SFF_I2CBUS_TYPE_7BIT	0
+#define ICE_AQC_SFF_I2CBUS_TYPE_10BIT	ICE_AQC_SFF_I2CBUS_TYPE_M
+#define ICE_AQC_SFF_SET_EEPROM_PAGE_S	11
+#define ICE_AQC_SFF_SET_EEPROM_PAGE_M	(0x3 << ICE_AQC_SFF_SET_EEPROM_PAGE_S)
+#define ICE_AQC_SFF_NO_PAGE_CHANGE	0
+#define ICE_AQC_SFF_SET_23_ON_MISMATCH	1
+#define ICE_AQC_SFF_SET_22_ON_MISMATCH	2
+#define ICE_AQC_SFF_IS_WRITE		BIT(15)
+	__le16 i2c_mem_addr;
+	__le16 eeprom_page;
+#define  ICE_AQC_SFF_EEPROM_BANK_S 0
+#define  ICE_AQC_SFF_EEPROM_BANK_M (0xFF << ICE_AQC_SFF_EEPROM_BANK_S)
+#define  ICE_AQC_SFF_EEPROM_PAGE_S 8
+#define  ICE_AQC_SFF_EEPROM_PAGE_M (0xFF << ICE_AQC_SFF_EEPROM_PAGE_S)
+	__le32 addr_high;
+	__le32 addr_low;
+};
+
 /* NVM Read command (indirect 0x0701)
  * NVM Erase commands (direct 0x0702)
  * NVM Update commands (indirect 0x0703)
@@ -1620,6 +1647,7 @@ struct ice_aq_desc {
 		struct ice_aqc_get_phy_caps get_phy;
 		struct ice_aqc_set_phy_cfg set_phy;
 		struct ice_aqc_restart_an restart_an;
+		struct ice_aqc_sff_eeprom read_write_sff_param;
 		struct ice_aqc_set_port_id_led set_port_id_led;
 		struct ice_aqc_get_sw_cfg get_sw_conf;
 		struct ice_aqc_sw_rules sw_rules;
@@ -1744,6 +1772,7 @@ enum ice_adminq_opc {
 	ice_aqc_opc_set_event_mask			= 0x0613,
 	ice_aqc_opc_set_mac_lb				= 0x0620,
 	ice_aqc_opc_set_port_id_led			= 0x06E9,
+	ice_aqc_opc_sff_eeprom				= 0x06EE,
 
 	/* NVM commands */
 	ice_aqc_opc_nvm_read				= 0x0701,
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 3a6b3950eb0e..b41bf475b36f 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -2555,6 +2555,52 @@ ice_aq_set_port_id_led(struct ice_port_info *pi, bool is_orig_mode,
 	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 }
 
+/**
+ * ice_aq_sff_eeprom
+ * @hw: pointer to the HW struct
+ * @lport: bits [7:0] = logical port, bit [8] = logical port valid
+ * @bus_addr: I2C bus address of the eeprom (typically 0xA0, 0=topo default)
+ * @mem_addr: I2C offset. lower 8 bits for address, 8 upper bits zero padding.
+ * @page: QSFP page
+ * @set_page: set or ignore the page
+ * @data: pointer to data buffer to be read/written to the I2C device.
+ * @length: 1-16 for read, 1 for write.
+ * @write: 0 read, 1 for write.
+ * @cd: pointer to command details structure or NULL
+ *
+ * Read/Write SFF EEPROM (0x06EE)
+ */
+enum ice_status
+ice_aq_sff_eeprom(struct ice_hw *hw, u16 lport, u8 bus_addr,
+		  u16 mem_addr, u8 page, u8 set_page, u8 *data, u8 length,
+		  bool write, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_sff_eeprom *cmd;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+
+	if (!data || (mem_addr & 0xff00))
+		return ICE_ERR_PARAM;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_sff_eeprom);
+	cmd = &desc.params.read_write_sff_param;
+	desc.flags = cpu_to_le16(ICE_AQ_FLAG_RD | ICE_AQ_FLAG_BUF);
+	cmd->lport_num = (u8)(lport & 0xff);
+	cmd->lport_num_valid = (u8)((lport >> 8) & 0x01);
+	cmd->i2c_bus_addr = cpu_to_le16(((bus_addr >> 1) &
+					 ICE_AQC_SFF_I2CBUS_7BIT_M) |
+					((set_page <<
+					  ICE_AQC_SFF_SET_EEPROM_PAGE_S) &
+					 ICE_AQC_SFF_SET_EEPROM_PAGE_M));
+	cmd->i2c_mem_addr = cpu_to_le16(mem_addr & 0xff);
+	cmd->eeprom_page = cpu_to_le16((u16)page << ICE_AQC_SFF_EEPROM_PAGE_S);
+	if (write)
+		cmd->i2c_bus_addr |= cpu_to_le16(ICE_AQC_SFF_IS_WRITE);
+
+	status = ice_aq_send_cmd(hw, &desc, data, length, cd);
+	return status;
+}
+
 /**
  * __ice_aq_get_set_rss_lut
  * @hw: pointer to the hardware structure
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index 8a409edef38a..ae9718c8736c 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -115,6 +115,10 @@ ice_aq_set_mac_loopback(struct ice_hw *hw, bool ena_lpbk, struct ice_sq_cd *cd);
 enum ice_status
 ice_aq_set_port_id_led(struct ice_port_info *pi, bool is_orig_mode,
 		       struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_sff_eeprom(struct ice_hw *hw, u16 lport, u8 bus_addr,
+		  u16 mem_addr, u8 page, u8 set_page, u8 *data, u8 length,
+		  bool write, struct ice_sq_cd *cd);
 
 enum ice_status
 ice_dis_vsi_txq(struct ice_port_info *pi, u16 vsi_handle, u8 tc, u8 num_queues,
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index c270fbbc25bb..48d13e305d9e 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -3540,6 +3540,151 @@ ice_set_per_q_coalesce(struct net_device *netdev, u32 q_num,
 	return __ice_set_coalesce(netdev, ec, q_num);
 }
 
+#define ICE_I2C_EEPROM_DEV_ADDR		0xA0
+#define ICE_I2C_EEPROM_DEV_ADDR2	0xA2
+#define ICE_MODULE_TYPE_SFP		0x03
+#define ICE_MODULE_TYPE_QSFP_PLUS	0x0D
+#define ICE_MODULE_TYPE_QSFP28		0x11
+#define ICE_MODULE_SFF_ADDR_MODE	0x04
+#define ICE_MODULE_SFF_DIAG_CAPAB	0x40
+#define ICE_MODULE_REVISION_ADDR	0x01
+#define ICE_MODULE_SFF_8472_COMP	0x5E
+#define ICE_MODULE_SFF_8472_SWAP	0x5C
+#define ICE_MODULE_QSFP_MAX_LEN		640
+
+/**
+ * ice_get_module_info - get SFF module type and revision information
+ * @netdev: network interface device structure
+ * @modinfo: module EEPROM size and layout information structure
+ */
+static int
+ice_get_module_info(struct net_device *netdev,
+		    struct ethtool_modinfo *modinfo)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	struct ice_hw *hw = &pf->hw;
+	enum ice_status status;
+	u8 sff8472_comp = 0;
+	u8 sff8472_swap = 0;
+	u8 sff8636_rev = 0;
+	u8 value = 0;
+
+	status = ice_aq_sff_eeprom(hw, 0, ICE_I2C_EEPROM_DEV_ADDR, 0x00, 0x00,
+				   0, &value, 1, 0, NULL);
+	if (status)
+		return -EIO;
+
+	switch (value) {
+	case ICE_MODULE_TYPE_SFP:
+		status = ice_aq_sff_eeprom(hw, 0, ICE_I2C_EEPROM_DEV_ADDR,
+					   ICE_MODULE_SFF_8472_COMP, 0x00, 0,
+					   &sff8472_comp, 1, 0, NULL);
+		if (status)
+			return -EIO;
+		status = ice_aq_sff_eeprom(hw, 0, ICE_I2C_EEPROM_DEV_ADDR,
+					   ICE_MODULE_SFF_8472_SWAP, 0x00, 0,
+					   &sff8472_swap, 1, 0, NULL);
+		if (status)
+			return -EIO;
+
+		if (sff8472_swap & ICE_MODULE_SFF_ADDR_MODE) {
+			modinfo->type = ETH_MODULE_SFF_8079;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
+		} else if (sff8472_comp &&
+			   (sff8472_swap & ICE_MODULE_SFF_DIAG_CAPAB)) {
+			modinfo->type = ETH_MODULE_SFF_8472;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+		} else {
+			modinfo->type = ETH_MODULE_SFF_8079;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
+		}
+		break;
+	case ICE_MODULE_TYPE_QSFP_PLUS:
+	case ICE_MODULE_TYPE_QSFP28:
+		status = ice_aq_sff_eeprom(hw, 0, ICE_I2C_EEPROM_DEV_ADDR,
+					   ICE_MODULE_REVISION_ADDR, 0x00, 0,
+					   &sff8636_rev, 1, 0, NULL);
+		if (status)
+			return -EIO;
+		/* Check revision compliance */
+		if (sff8636_rev > 0x02) {
+			/* Module is SFF-8636 compliant */
+			modinfo->type = ETH_MODULE_SFF_8636;
+			modinfo->eeprom_len = ICE_MODULE_QSFP_MAX_LEN;
+		} else {
+			modinfo->type = ETH_MODULE_SFF_8436;
+			modinfo->eeprom_len = ICE_MODULE_QSFP_MAX_LEN;
+		}
+		break;
+	default:
+		netdev_warn(netdev,
+			    "SFF Module Type not recognized.\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/**
+ * ice_get_module_eeprom - fill buffer with SFF EEPROM contents
+ * @netdev: network interface device structure
+ * @ee: EEPROM dump request structure
+ * @data: buffer to be filled with EEPROM contents
+ */
+static int
+ice_get_module_eeprom(struct net_device *netdev,
+		      struct ethtool_eeprom *ee, u8 *data)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	u8 addr = ICE_I2C_EEPROM_DEV_ADDR;
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	struct ice_hw *hw = &pf->hw;
+	enum ice_status status;
+	bool is_sfp = false;
+	u16 offset = 0;
+	u8 value = 0;
+	u8 page = 0;
+	int i;
+
+	status = ice_aq_sff_eeprom(hw, 0, addr, offset, page, 0,
+				   &value, 1, 0, NULL);
+	if (status)
+		return -EIO;
+
+	if (!ee || !ee->len || !data)
+		return -EINVAL;
+
+	if (value == ICE_MODULE_TYPE_SFP)
+		is_sfp = true;
+
+	for (i = 0; i < ee->len; i++) {
+		offset = i + ee->offset;
+
+		/* Check if we need to access the other memory page */
+		if (is_sfp) {
+			if (offset >= ETH_MODULE_SFF_8079_LEN) {
+				offset -= ETH_MODULE_SFF_8079_LEN;
+				addr = ICE_I2C_EEPROM_DEV_ADDR2;
+			}
+		} else {
+			while (offset >= ETH_MODULE_SFF_8436_LEN) {
+				/* Compute memory page number and offset. */
+				offset -= ETH_MODULE_SFF_8436_LEN / 2;
+				page++;
+			}
+		}
+
+		status = ice_aq_sff_eeprom(hw, 0, addr, offset, page, !is_sfp,
+					   &value, 1, 0, NULL);
+		if (status)
+			value = 0;
+		data[i] = value;
+	}
+	return 0;
+}
+
 static const struct ethtool_ops ice_ethtool_ops = {
 	.get_link_ksettings	= ice_get_link_ksettings,
 	.set_link_ksettings	= ice_set_link_ksettings,
@@ -3576,6 +3721,8 @@ static const struct ethtool_ops ice_ethtool_ops = {
 	.set_per_queue_coalesce = ice_set_per_q_coalesce,
 	.get_fecparam		= ice_get_fecparam,
 	.set_fecparam		= ice_set_fecparam,
+	.get_module_info	= ice_get_module_info,
+	.get_module_eeprom	= ice_get_module_eeprom,
 };
 
 static const struct ethtool_ops ice_ethtool_safe_mode_ops = {
-- 
2.21.0

[net-next v2 03/14] ice: Update Boot Configuration Section read of NVM

[Jeff Kirsher]

From: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>

The Boot Configuration Section Block has been moved to the Preserved Field
Area (PFA) of NVM. Update the NVM reads that involves Boot Configuration
Section.

Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_common.c | 66 +++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_common.h |  3 +
 drivers/net/ethernet/intel/ice/ice_nvm.c    | 51 +++++++++++++---
 drivers/net/ethernet/intel/ice/ice_nvm.h    |  1 +
 drivers/net/ethernet/intel/ice/ice_type.h   |  3 +
 5 files changed, 115 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index b41bf475b36f..9972929053aa 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1066,6 +1066,72 @@ enum ice_status ice_reset(struct ice_hw *hw, enum ice_reset_req req)
 	return ice_check_reset(hw);
 }
 
+/**
+ * ice_get_pfa_module_tlv - Reads sub module TLV from NVM PFA
+ * @hw: pointer to hardware structure
+ * @module_tlv: pointer to module TLV to return
+ * @module_tlv_len: pointer to module TLV length to return
+ * @module_type: module type requested
+ *
+ * Finds the requested sub module TLV type from the Preserved Field
+ * Area (PFA) and returns the TLV pointer and length. The caller can
+ * use these to read the variable length TLV value.
+ */
+enum ice_status
+ice_get_pfa_module_tlv(struct ice_hw *hw, u16 *module_tlv, u16 *module_tlv_len,
+		       u16 module_type)
+{
+	enum ice_status status;
+	u16 pfa_len, pfa_ptr;
+	u16 next_tlv;
+
+	status = ice_read_sr_word(hw, ICE_SR_PFA_PTR, &pfa_ptr);
+	if (status) {
+		ice_debug(hw, ICE_DBG_INIT, "Preserved Field Array pointer.\n");
+		return status;
+	}
+	status = ice_read_sr_word(hw, pfa_ptr, &pfa_len);
+	if (status) {
+		ice_debug(hw, ICE_DBG_INIT, "Failed to read PFA length.\n");
+		return status;
+	}
+	/* Starting with first TLV after PFA length, iterate through the list
+	 * of TLVs to find the requested one.
+	 */
+	next_tlv = pfa_ptr + 1;
+	while (next_tlv < pfa_ptr + pfa_len) {
+		u16 tlv_sub_module_type;
+		u16 tlv_len;
+
+		/* Read TLV type */
+		status = ice_read_sr_word(hw, next_tlv, &tlv_sub_module_type);
+		if (status) {
+			ice_debug(hw, ICE_DBG_INIT, "Failed to read TLV type.\n");
+			break;
+		}
+		/* Read TLV length */
+		status = ice_read_sr_word(hw, next_tlv + 1, &tlv_len);
+		if (status) {
+			ice_debug(hw, ICE_DBG_INIT, "Failed to read TLV length.\n");
+			break;
+		}
+		if (tlv_sub_module_type == module_type) {
+			if (tlv_len) {
+				*module_tlv = next_tlv;
+				*module_tlv_len = tlv_len;
+				return 0;
+			}
+			return ICE_ERR_INVAL_SIZE;
+		}
+		/* Check next TLV, i.e. current TLV pointer + length + 2 words
+		 * (for current TLV's type and length)
+		 */
+		next_tlv = next_tlv + tlv_len + 2;
+	}
+	/* Module does not exist */
+	return ICE_ERR_DOES_NOT_EXIST;
+}
+
 /**
  * ice_copy_rxq_ctx_to_hw
  * @hw: pointer to the hardware structure
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index ae9718c8736c..44b1f86e2979 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -17,6 +17,9 @@ void
 ice_debug_cq(struct ice_hw *hw, u32 mask, void *desc, void *buf, u16 buf_len);
 enum ice_status ice_init_hw(struct ice_hw *hw);
 void ice_deinit_hw(struct ice_hw *hw);
+enum ice_status
+ice_get_pfa_module_tlv(struct ice_hw *hw, u16 *module_tlv, u16 *module_tlv_len,
+		       u16 module_type);
 enum ice_status ice_check_reset(struct ice_hw *hw);
 enum ice_status ice_reset(struct ice_hw *hw, enum ice_reset_req req);
 enum ice_status ice_create_all_ctrlq(struct ice_hw *hw);
diff --git a/drivers/net/ethernet/intel/ice/ice_nvm.c b/drivers/net/ethernet/intel/ice/ice_nvm.c
index bd19ce9b5bfd..28e1972e2bc9 100644
--- a/drivers/net/ethernet/intel/ice/ice_nvm.c
+++ b/drivers/net/ethernet/intel/ice/ice_nvm.c
@@ -168,8 +168,7 @@ void ice_release_nvm(struct ice_hw *hw)
  *
  * Reads one 16 bit word from the Shadow RAM using the ice_read_sr_word_aq.
  */
-static enum
-ice_status ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data)
+enum ice_status ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data)
 {
 	enum ice_status status;
 
@@ -191,9 +190,10 @@ ice_status ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data)
  */
 enum ice_status ice_init_nvm(struct ice_hw *hw)
 {
+	u16 oem_hi, oem_lo, boot_cfg_tlv, boot_cfg_tlv_len;
 	struct ice_nvm_info *nvm = &hw->nvm;
 	u16 eetrack_lo, eetrack_hi;
-	enum ice_status status = 0;
+	enum ice_status status;
 	u32 fla, gens_stat;
 	u8 sr_size;
 
@@ -210,15 +210,15 @@ enum ice_status ice_init_nvm(struct ice_hw *hw)
 	fla = rd32(hw, GLNVM_FLA);
 	if (fla & GLNVM_FLA_LOCKED_M) { /* Normal programming mode */
 		nvm->blank_nvm_mode = false;
-	} else { /* Blank programming mode */
+	} else {
+		/* Blank programming mode */
 		nvm->blank_nvm_mode = true;
-		status = ICE_ERR_NVM_BLANK_MODE;
 		ice_debug(hw, ICE_DBG_NVM,
 			  "NVM init error: unsupported blank mode.\n");
-		return status;
+		return ICE_ERR_NVM_BLANK_MODE;
 	}
 
-	status = ice_read_sr_word(hw, ICE_SR_NVM_DEV_STARTER_VER, &hw->nvm.ver);
+	status = ice_read_sr_word(hw, ICE_SR_NVM_DEV_STARTER_VER, &nvm->ver);
 	if (status) {
 		ice_debug(hw, ICE_DBG_INIT,
 			  "Failed to read DEV starter version.\n");
@@ -236,9 +236,42 @@ enum ice_status ice_init_nvm(struct ice_hw *hw)
 		return status;
 	}
 
-	hw->nvm.eetrack = (eetrack_hi << 16) | eetrack_lo;
+	nvm->eetrack = (eetrack_hi << 16) | eetrack_lo;
 
-	return status;
+	status = ice_get_pfa_module_tlv(hw, &boot_cfg_tlv, &boot_cfg_tlv_len,
+					ICE_SR_BOOT_CFG_PTR);
+	if (status) {
+		ice_debug(hw, ICE_DBG_INIT,
+			  "Failed to read Boot Configuration Block TLV.\n");
+		return status;
+	}
+
+	/* Boot Configuration Block must have length at least 2 words
+	 * (Combo Image Version High and Combo Image Version Low)
+	 */
+	if (boot_cfg_tlv_len < 2) {
+		ice_debug(hw, ICE_DBG_INIT,
+			  "Invalid Boot Configuration Block TLV size.\n");
+		return ICE_ERR_INVAL_SIZE;
+	}
+
+	status = ice_read_sr_word(hw, (boot_cfg_tlv + ICE_NVM_OEM_VER_OFF),
+				  &oem_hi);
+	if (status) {
+		ice_debug(hw, ICE_DBG_INIT, "Failed to read OEM_VER hi.\n");
+		return status;
+	}
+
+	status = ice_read_sr_word(hw, (boot_cfg_tlv + ICE_NVM_OEM_VER_OFF + 1),
+				  &oem_lo);
+	if (status) {
+		ice_debug(hw, ICE_DBG_INIT, "Failed to read OEM_VER lo.\n");
+		return status;
+	}
+
+	nvm->oem_ver = ((u32)oem_hi << 16) | oem_lo;
+
+	return 0;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ice/ice_nvm.h b/drivers/net/ethernet/intel/ice/ice_nvm.h
index 75d167b7ebe3..b6dd6226e81c 100644
--- a/drivers/net/ethernet/intel/ice/ice_nvm.h
+++ b/drivers/net/ethernet/intel/ice/ice_nvm.h
@@ -76,4 +76,5 @@ ice_aq_read_nvm(struct ice_hw *hw, u16 module_typeid, u32 offset, u16 length,
 		void *data, bool last_command, bool read_shadow_ram,
 		struct ice_sq_cd *cd);
 enum ice_status ice_init_nvm(struct ice_hw *hw);
+enum ice_status ice_read_sr_word(struct ice_hw *hw, u16 offset, u16 *data);
 #endif /* _ICE_NVM_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index 6667d17a4206..08fe3e5e72d4 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -555,6 +555,8 @@ struct ice_hw_port_stats {
 };
 
 /* Checksum and Shadow RAM pointers */
+#define ICE_SR_BOOT_CFG_PTR		0x132
+#define ICE_NVM_OEM_VER_OFF		0x02
 #define ICE_SR_NVM_DEV_STARTER_VER	0x18
 #define ICE_SR_NVM_EETRACK_LO		0x2D
 #define ICE_SR_NVM_EETRACK_HI		0x2E
@@ -568,6 +570,7 @@ struct ice_hw_port_stats {
 #define ICE_OEM_VER_BUILD_MASK		(0xffff << ICE_OEM_VER_BUILD_SHIFT)
 #define ICE_OEM_VER_SHIFT		24
 #define ICE_OEM_VER_MASK		(0xff << ICE_OEM_VER_SHIFT)
+#define ICE_SR_PFA_PTR			0x40
 #define ICE_SR_SECTOR_SIZE_IN_WORDS	0x800
 #define ICE_SR_WORDS_IN_1KB		512
 
-- 
2.21.0

[net-next v2 04/14] ice: handle DCBx non-contiguous TC request

[Jeff Kirsher]

From: Paul Greenwalt <paul.greenwalt@intel.com>

If DCBx request non-contiguous TCs, then the driver will configure default
traffic class (TC0). This is done to prevent Tx hang since the driver
currently does not support non-contiguous TC.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 141 ++++++++++++++-----
 1 file changed, 102 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
index dd47869c4ad4..13da89e22123 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -3,6 +3,8 @@
 
 #include "ice_dcb_lib.h"
 
+static void ice_pf_dcb_recfg(struct ice_pf *pf);
+
 /**
  * ice_vsi_cfg_netdev_tc - Setup the netdev TC configuration
  * @vsi: the VSI being configured
@@ -137,42 +139,6 @@ void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi)
 	}
 }
 
-/**
- * ice_pf_dcb_recfg - Reconfigure all VEBs and VSIs
- * @pf: pointer to the PF struct
- *
- * Assumed caller has already disabled all VSIs before
- * calling this function. Reconfiguring DCB based on
- * local_dcbx_cfg.
- */
-static void ice_pf_dcb_recfg(struct ice_pf *pf)
-{
-	struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg;
-	u8 tc_map = 0;
-	int v, ret;
-
-	/* Update each VSI */
-	ice_for_each_vsi(pf, v) {
-		if (!pf->vsi[v])
-			continue;
-
-		if (pf->vsi[v]->type == ICE_VSI_PF)
-			tc_map = ice_dcb_get_ena_tc(dcbcfg);
-		else
-			tc_map = ICE_DFLT_TRAFFIC_CLASS;
-
-		ret = ice_vsi_cfg_tc(pf->vsi[v], tc_map);
-		if (ret) {
-			dev_err(&pf->pdev->dev,
-				"Failed to config TC for VSI index: %d\n",
-				pf->vsi[v]->idx);
-			continue;
-		}
-
-		ice_vsi_map_rings_to_vectors(pf->vsi[v]);
-	}
-}
-
 /**
  * ice_pf_dcb_cfg - Apply new DCB configuration
  * @pf: pointer to the PF struct
@@ -437,9 +403,10 @@ static int ice_dcb_init_cfg(struct ice_pf *pf, bool locked)
 /**
  * ice_dcb_sw_default_config - Apply a default DCB config
  * @pf: PF to apply config to
+ * @ets_willing: configure ets willing
  * @locked: was this function called with RTNL held
  */
-static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool locked)
+static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked)
 {
 	struct ice_aqc_port_ets_elem buf = { 0 };
 	struct ice_dcbx_cfg *dcbcfg;
@@ -454,7 +421,7 @@ static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool locked)
 	memset(dcbcfg, 0, sizeof(*dcbcfg));
 	memset(&pi->local_dcbx_cfg, 0, sizeof(*dcbcfg));
 
-	dcbcfg->etscfg.willing = 1;
+	dcbcfg->etscfg.willing = ets_willing ? 1 : 0;
 	dcbcfg->etscfg.maxtcs = hw->func_caps.common_cap.maxtc;
 	dcbcfg->etscfg.tcbwtable[0] = 100;
 	dcbcfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS;
@@ -479,6 +446,102 @@ static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool locked)
 	return ice_query_port_ets(pi, &buf, sizeof(buf), NULL);
 }
 
+/**
+ * ice_dcb_tc_contig - Check that TCs are contiguous
+ * @prio_table: pointer to priority table
+ *
+ * Check if TCs begin with TC0 and are contiguous
+ */
+static bool ice_dcb_tc_contig(u8 *prio_table)
+{
+	u8 max_tc = 0;
+	int i;
+
+	for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) {
+		u8 cur_tc = prio_table[i];
+
+		if (cur_tc > max_tc)
+			return false;
+		else if (cur_tc == max_tc)
+			max_tc++;
+	}
+
+	return true;
+}
+
+/**
+ * ice_dcb_noncontig_cfg - Configure DCB for non-contiguous TCs
+ * @pf: pointer to the PF struct
+ *
+ * If non-contiguous TCs, then configure SW DCB with TC0 and ETS non-willing
+ */
+static int ice_dcb_noncontig_cfg(struct ice_pf *pf)
+{
+	struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg;
+	int ret;
+
+	/* Configure SW DCB default with ETS non-willing */
+	ret = ice_dcb_sw_dflt_cfg(pf, false, true);
+	if (ret) {
+		dev_err(&pf->pdev->dev,
+			"Failed to set local DCB config %d\n", ret);
+		return ret;
+	}
+
+	/* Reconfigure with ETS willing so that FW will send LLDP MIB event */
+	dcbcfg->etscfg.willing = 1;
+	ret = ice_set_dcb_cfg(pf->hw.port_info);
+	if (ret)
+		dev_err(&pf->pdev->dev, "Failed to set DCB to unwilling\n");
+
+	return ret;
+}
+
+/**
+ * ice_pf_dcb_recfg - Reconfigure all VEBs and VSIs
+ * @pf: pointer to the PF struct
+ *
+ * Assumed caller has already disabled all VSIs before
+ * calling this function. Reconfiguring DCB based on
+ * local_dcbx_cfg.
+ */
+static void ice_pf_dcb_recfg(struct ice_pf *pf)
+{
+	struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg;
+	u8 tc_map = 0;
+	int v, ret;
+
+	/* Update each VSI */
+	ice_for_each_vsi(pf, v) {
+		if (!pf->vsi[v])
+			continue;
+
+		if (pf->vsi[v]->type == ICE_VSI_PF) {
+			tc_map = ice_dcb_get_ena_tc(dcbcfg);
+
+			/* If DCBX request non-contiguous TC, then configure
+			 * default TC
+			 */
+			if (!ice_dcb_tc_contig(dcbcfg->etscfg.prio_table)) {
+				tc_map = ICE_DFLT_TRAFFIC_CLASS;
+				ice_dcb_noncontig_cfg(pf);
+			}
+		} else {
+			tc_map = ICE_DFLT_TRAFFIC_CLASS;
+		}
+
+		ret = ice_vsi_cfg_tc(pf->vsi[v], tc_map);
+		if (ret) {
+			dev_err(&pf->pdev->dev,
+				"Failed to config TC for VSI index: %d\n",
+				pf->vsi[v]->idx);
+			continue;
+		}
+
+		ice_vsi_map_rings_to_vectors(pf->vsi[v]);
+	}
+}
+
 /**
  * ice_init_pf_dcb - initialize DCB for a PF
  * @pf: PF to initialize DCB for
@@ -507,7 +570,7 @@ int ice_init_pf_dcb(struct ice_pf *pf, bool locked)
 		dev_info(&pf->pdev->dev,
 			 "FW LLDP is disabled, DCBx/LLDP in SW mode.\n");
 		clear_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags);
-		err = ice_dcb_sw_dflt_cfg(pf, locked);
+		err = ice_dcb_sw_dflt_cfg(pf, true, locked);
 		if (err) {
 			dev_err(&pf->pdev->dev,
 				"Failed to set local DCB config %d\n", err);
-- 
2.21.0

[net-next v2 05/14] ice: fix driver unload flow

[Jeff Kirsher]

From: Bruce Allan <bruce.w.allan@intel.com>

As part of the driver unload flow, a PF reset is issued which may still
cause an interrupt to be generated by the device.  Do not clear the
interrupt scheme until the reset is complete and there are no pending
transactions otherwise a hardware error may occur.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 363b284e8aa1..f29f5753f977 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3348,12 +3348,13 @@ static void ice_remove(struct pci_dev *pdev)
 	}
 	ice_deinit_pf(pf);
 	ice_deinit_hw(&pf->hw);
-	ice_clear_interrupt_scheme(pf);
 	/* Issue a PFR as part of the prescribed driver unload flow.  Do not
 	 * do it via ice_schedule_reset() since there is no need to rebuild
 	 * and the service task is already stopped.
 	 */
 	ice_reset(&pf->hw, ICE_RESET_PFR);
+	pci_wait_for_pending_transaction(pdev);
+	ice_clear_interrupt_scheme(pf);
 	pci_disable_pcie_error_reporting(pdev);
 }
 
-- 
2.21.0

[net-next v2 06/14] ice: Adjust DCB INIT for SW mode

[Jeff Kirsher]

From: Dave Ertman <david.m.ertman@intel.com>

Adjust ice_init_dcb to set the is_sw_lldp boolean
in the case where the FW has been detected to be
in an untenable state such that the driver
should forcibly make sure it is off.

This will ensure that the FW is in a known state.

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_dcb.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb.c b/drivers/net/ethernet/intel/ice/ice_dcb.c
index dd7efff121bd..713e8a892e14 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb.c
@@ -965,9 +965,9 @@ enum ice_status ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
 	    pi->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
 		/* Get current DCBX configuration */
 		ret = ice_get_dcb_cfg(pi);
-		pi->is_sw_lldp = (hw->adminq.sq_last_status == ICE_AQ_RC_EPERM);
 		if (ret)
 			return ret;
+		pi->is_sw_lldp = false;
 	} else if (pi->dcbx_status == ICE_DCBX_STATUS_DIS) {
 		return ICE_ERR_NOT_READY;
 	}
@@ -975,8 +975,8 @@ enum ice_status ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
 	/* Configure the LLDP MIB change event */
 	if (enable_mib_change) {
 		ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
-		if (!ret)
-			pi->is_sw_lldp = false;
+		if (ret)
+			pi->is_sw_lldp = true;
 	}
 
 	return ret;
-- 
2.21.0

[net-next v2 07/14] ice: save PCI state in probe

[Jeff Kirsher]

From: Michal Swiatkowski <michal.swiatkowski@intel.com>

Save state to correct recovery memory and I/O BARs address
after PCI bus reset. Without this after reset kernel can't
read device registers.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index f29f5753f977..76c5324268c5 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3152,6 +3152,8 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
 
 	hw = &pf->hw;
 	hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0];
+	pci_save_state(pdev);
+
 	hw->back = pf;
 	hw->vendor_id = pdev->vendor;
 	hw->device_id = pdev->device;
-- 
2.21.0

[net-next v2 08/14] ice: Check for null pointer dereference when setting rings

[Jeff Kirsher]

From: Michal Swiatkowski <michal.swiatkowski@intel.com>

Without this check rebuild vsi can lead to kernel panic.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 76c5324268c5..d061e9fd6f2c 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4303,8 +4303,13 @@ int ice_vsi_setup_tx_rings(struct ice_vsi *vsi)
 	}
 
 	ice_for_each_txq(vsi, i) {
-		vsi->tx_rings[i]->netdev = vsi->netdev;
-		err = ice_setup_tx_ring(vsi->tx_rings[i]);
+		struct ice_ring *ring = vsi->tx_rings[i];
+
+		if (!ring)
+			return -EINVAL;
+
+		ring->netdev = vsi->netdev;
+		err = ice_setup_tx_ring(ring);
 		if (err)
 			break;
 	}
@@ -4329,8 +4334,13 @@ int ice_vsi_setup_rx_rings(struct ice_vsi *vsi)
 	}
 
 	ice_for_each_rxq(vsi, i) {
-		vsi->rx_rings[i]->netdev = vsi->netdev;
-		err = ice_setup_rx_ring(vsi->rx_rings[i]);
+		struct ice_ring *ring = vsi->rx_rings[i];
+
+		if (!ring)
+			return -EINVAL;
+
+		ring->netdev = vsi->netdev;
+		err = ice_setup_rx_ring(ring);
 		if (err)
 			break;
 	}
-- 
2.21.0

[net-next v2 09/14] ice: write register with correct offset

[Jeff Kirsher]

From: Mitch Williams <mitch.a.williams@intel.com>

The VF_MBX_ARQLEN register array is per-PF, not global, so we should not
use the absolute VF ID as an index. Instead, use the per-PF VF ID.

This fixes an issue with VFs on PFs other than 0 not seeing reset.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index ad757412bb04..3d8c231b0614 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -390,7 +390,7 @@ static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr)
 	 * by the time we get here.
 	 */
 	if (!is_pfr)
-		wr32(hw, VF_MBX_ARQLEN(vf_abs_id), 0);
+		wr32(hw, VF_MBX_ARQLEN(vf->vf_id), 0);
 
 	/* In the case of a VFLR, the HW has already reset the VF and we
 	 * just need to clean up, so don't hit the VFRTRIG register.
-- 
2.21.0

[net-next v2 10/14] ice: print unsupported module message

[Jeff Kirsher]

From: Paul Greenwalt <paul.greenwalt@intel.com>

Print message to inform user if unsupported module is inserted, and
extend the topology / configuration detection.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_adminq_cmd.h | 4 ++++
 drivers/net/ethernet/intel/ice/ice_main.c       | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 6d24df5977a5..f6b4d300543d 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -1044,6 +1044,10 @@ struct ice_aqc_get_link_status_data {
 #define ICE_AQ_LINK_TOPO_CONFLICT	BIT(0)
 #define ICE_AQ_LINK_MEDIA_CONFLICT	BIT(1)
 #define ICE_AQ_LINK_TOPO_CORRUPT	BIT(2)
+#define ICE_AQ_LINK_TOPO_UNREACH_PRT	BIT(4)
+#define ICE_AQ_LINK_TOPO_UNDRUTIL_PRT	BIT(5)
+#define ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA	BIT(6)
+#define ICE_AQ_LINK_TOPO_UNSUPP_MEDIA	BIT(7)
 	u8 reserved1;
 	u8 link_info;
 #define ICE_AQ_LINK_UP			BIT(0)	/* Link Status */
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index d061e9fd6f2c..7a90243198eb 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -637,8 +637,14 @@ static void ice_print_topo_conflict(struct ice_vsi *vsi)
 	switch (vsi->port_info->phy.link_info.topo_media_conflict) {
 	case ICE_AQ_LINK_TOPO_CONFLICT:
 	case ICE_AQ_LINK_MEDIA_CONFLICT:
+	case ICE_AQ_LINK_TOPO_UNREACH_PRT:
+	case ICE_AQ_LINK_TOPO_UNDRUTIL_PRT:
+	case ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA:
 		netdev_info(vsi->netdev, "Possible mis-configuration of the Ethernet port detected, please use the Intel(R) Ethernet Port Configuration Tool application to address the issue.\n");
 		break;
+	case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA:
+		netdev_info(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
+		break;
 	default:
 		break;
 	}
-- 
2.21.0

[net-next v2 11/14] ice: print PCI link speed and width

[Jeff Kirsher]

From: Paul Greenwalt <paul.greenwalt@intel.com>

Print message to inform user of PCI link speed and width.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 7a90243198eb..32684fce7de6 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3305,6 +3305,9 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
 		ice_cfg_lldp_mib_change(&pf->hw, true);
 	}
 
+	/* print PCI link speed and width */
+	pcie_print_link_status(pf->pdev);
+
 	return 0;
 
 err_alloc_sw_unroll:
-- 
2.21.0

[net-next v2 12/14] ice: Get rid of ice_cleanup_header

[Jeff Kirsher]

From: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>

ice_cleanup_hdrs() has been stripped of most of its content, it only serves
as a wrapper for eth_skb_pad(). We can get rid of it altogether and
simplify the codebase.

Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_txrx.c | 27 ++---------------------
 1 file changed, 2 insertions(+), 25 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index 40a29b9d3034..2c212f64d99f 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -944,27 +944,6 @@ static void ice_put_rx_buf(struct ice_ring *rx_ring, struct ice_rx_buf *rx_buf)
 	rx_buf->skb = NULL;
 }
 
-/**
- * ice_cleanup_headers - Correct empty headers
- * @skb: pointer to current skb being fixed
- *
- * Also address the case where we are pulling data in on pages only
- * and as such no data is present in the skb header.
- *
- * In addition if skb is not at least 60 bytes we need to pad it so that
- * it is large enough to qualify as a valid Ethernet frame.
- *
- * Returns true if an error was encountered and skb was freed.
- */
-static bool ice_cleanup_headers(struct sk_buff *skb)
-{
-	/* if eth_skb_pad returns an error the skb was freed */
-	if (eth_skb_pad(skb))
-		return true;
-
-	return false;
-}
-
 /**
  * ice_is_non_eop - process handling of non-EOP buffers
  * @rx_ring: Rx ring being processed
@@ -1124,10 +1103,8 @@ static int ice_clean_rx_irq(struct ice_ring *rx_ring, int budget)
 		if (ice_test_staterr(rx_desc, stat_err_bits))
 			vlan_tag = le16_to_cpu(rx_desc->wb.l2tag1);
 
-		/* correct empty headers and pad skb if needed (to make valid
-		 * ethernet frame
-		 */
-		if (ice_cleanup_headers(skb)) {
+		/* pad the skb if needed, to make a valid ethernet frame */
+		if (eth_skb_pad(skb)) {
 			skb = NULL;
 			continue;
 		}
-- 
2.21.0

[net-next v2 13/14] ice: Rename VF function ice_vc_dis_vf to match its behavior

[Jeff Kirsher]

From: Brett Creeley <brett.creeley@intel.com>

ice_vc_dis_vf() tells iavf that it's going to perform a reset
and then performs a software reset. This is misleading based on
the function name because the VF does not get disabled. So fix
this by changing the name to ice_vc_reset_vf().

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 3d8c231b0614..7ef2cc739587 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -1496,12 +1496,10 @@ void ice_process_vflr_event(struct ice_pf *pf)
 }
 
 /**
- * ice_vc_dis_vf - Disable a given VF via SW reset
+ * ice_vc_reset_vf - Perform software reset on the VF after informing the AVF
  * @vf: pointer to the VF info
- *
- * Disable the VF through a SW reset
  */
-static void ice_vc_dis_vf(struct ice_vf *vf)
+static void ice_vc_reset_vf(struct ice_vf *vf)
 {
 	ice_vc_notify_vf_reset(vf);
 	ice_reset_vf(vf, false);
@@ -2541,7 +2539,7 @@ static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
 	} else {
 		/* request is successful, then reset VF */
 		vf->num_req_qs = req_queues;
-		ice_vc_dis_vf(vf);
+		ice_vc_reset_vf(vf);
 		dev_info(&pf->pdev->dev,
 			 "VF %d granted request of %u queues.\n",
 			 vf->vf_id, req_queues);
@@ -3168,7 +3166,7 @@ int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
 		    "MAC on VF %d set to %pM. VF driver will be reinitialized\n",
 		    vf_id, mac);
 
-	ice_vc_dis_vf(vf);
+	ice_vc_reset_vf(vf);
 	return ret;
 }
 
@@ -3204,7 +3202,7 @@ int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
 		return 0;
 
 	vf->trusted = trusted;
-	ice_vc_dis_vf(vf);
+	ice_vc_reset_vf(vf);
 	dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
 		 vf_id, trusted ? "" : "un");
 
-- 
2.21.0

[net-next v2 14/14] ice: Fix return value when SR-IOV is not supported

[Jeff Kirsher]

From: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>

When the device is not capable of supporting SR-IOV -ENODEV is being
returned; -EOPNOTSUPP is more appropriate.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 7ef2cc739587..b4813ccc467d 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -1408,7 +1408,7 @@ static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs)
 
 	if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) {
 		dev_err(dev, "This device is not capable of SR-IOV\n");
-		return -ENODEV;
+		return -EOPNOTSUPP;
 	}
 
 	if (pre_existing_vfs && pre_existing_vfs != num_vfs)
-- 
2.21.0

Re: [net-next v2 00/14][pull request] 100GbE Intel Wired LAN Driver Updates 2019-11-06

[Jeff Kirsher]

[-- Attachment #1: Type: text/plain, Size: 2345 bytes --]

On Wed, 2019-11-06 at 11:37 -0800, Jeff Kirsher wrote:
> This series contains updates to ice driver only.
> 
> Jesse implements set_eeprom functionality in ethtool by adding
> functions
> to enable reading of the NVM image.
> 
> Scott adds ethtool -m support so that we can read eeprom data on
> SFP/OSFP
> modules.
> 
> Anirudh updates the return value to properly reflect when SRIOV is
> not
> supported.
> 
> Md Fahad updates the driver to handle a change in the NVM, where the
> boot configuration section was moved to the Preserved Field Area
> (PFA)
> of the NVM.
> 
> Paul resolves an issue when DCBx requests non-contiguous TCs,
> transmit
> hangs could occur, so configure a default traffic class (TC0) in
> these
> cases to prevent traffic hangs.  Adds a print statement to notify the
> user when unsupported modules are inserted.
> 
> Bruce fixes up the driver unload code flow to ensure we do not clear
> the
> interrupt scheme until the reset is complete, otherwise a hardware
> error
> may occur.
> 
> Dave updates the DCB initialization to set is_sw_lldp boolean when
> the
> firmware has been detected to be in an untenable state.  This will
> ensure that the firmware is in a known state.
> 
> Michal saves off the PCI state and I/O BARs address after PCI bus
> reset
> so that after the reset, device registers can be read.  Also adds a
> NULL
> pointer check to prevent a potential kernel panic.
> 
> Mitch resolves an issue where VF's on PF's other than 0 were not
> seeing
> resets by using the per-PF VF ID instead of the absolute VF ID.
> 
> Krzysztof does some code cleanup to remove a unneeded wrapper and
> reduces the code complexity.
> 
> Brett reduces confusion by changing the name of ice_vc_dis_vf() to
> ice_vc_reset_vf() to better describe what the function is actually
> doing.
> 
> v2: dropped patch 3 "ice: Add support for FW recovery mode detection"
>     from the origin al series, while Ani makes changes based on
>     community feedback to implement devlink into the changes.

Sorry for the thrash, I will need to generate a v3 of this series.  I
need to drop patch 1 of the series as well, since these driver changes
will be affected by Ani's work to implement devlink into the driver, as
well as we found a bug with this particular patch.

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