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* [PATCH v4 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check
@ 2017-04-13  6:48 Xinming Hu
  2017-04-13  6:48 ` [PATCH v4 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set Xinming Hu
                   ` (3 more replies)
  0 siblings, 4 replies; 11+ messages in thread
From: Xinming Hu @ 2017-04-13  6:48 UTC (permalink / raw)
  To: Linux Wireless
  Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Xinming Hu

From: Xinming Hu <huxm@marvell.com>

If wakeup interrupt handler is called, we know that the wakeup
interrupt number is valid, there is no need to check it.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
---
v2: modify description(Dimtry)
v4: same as v2, v3
---
 drivers/net/wireless/marvell/mwifiex/main.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 0dfbac8..98fd491 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1513,11 +1513,9 @@ static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
 {
 	struct mwifiex_adapter *adapter = priv;
 
-	if (adapter->irq_wakeup >= 0) {
-		dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
-		adapter->wake_by_wifi = true;
-		disable_irq_nosync(irq);
-	}
+	dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
+	adapter->wake_by_wifi = true;
+	disable_irq_nosync(irq);
 
 	/* Notify PM core we are wakeup source */
 	pm_wakeup_event(adapter->dev, 0);
-- 
1.8.1.4

^ permalink raw reply related	[flat|nested] 11+ messages in thread

* [PATCH v4 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set
  2017-04-13  6:48 [PATCH v4 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Xinming Hu
@ 2017-04-13  6:48 ` Xinming Hu
  2017-04-13  6:48 ` [PATCH v4 3/4] mwifiex: pcie: correct scratch register name Xinming Hu
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 11+ messages in thread
From: Xinming Hu @ 2017-04-13  6:48 UTC (permalink / raw)
  To: Linux Wireless
  Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Xinming Hu

From: Xinming Hu <huxm@marvell.com>

mwifiex_dbg will do nothing before adapter->dev get assigned. several logs
lost in this case. it can be avoided by fall back to pr_info.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
---
v2: enhance adapter->dev null case.(Brain)
v3: use va_list in pr_info.(Dmitry)
v4: same as v3
---
 drivers/net/wireless/marvell/mwifiex/main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 98fd491..16cd14e 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1750,7 +1750,7 @@ void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
 	struct va_format vaf;
 	va_list args;
 
-	if (!adapter->dev || !(adapter->debug_mask & mask))
+	if (!(adapter->debug_mask & mask))
 		return;
 
 	va_start(args, fmt);
@@ -1758,7 +1758,10 @@ void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
 	vaf.fmt = fmt;
 	vaf.va = &args;
 
-	dev_info(adapter->dev, "%pV", &vaf);
+	if (adapter->dev)
+		dev_info(adapter->dev, "%pV", &vaf);
+	else
+		pr_info("%pV", &vaf);
 
 	va_end(args);
 }
-- 
1.8.1.4

^ permalink raw reply related	[flat|nested] 11+ messages in thread

* [PATCH v4 3/4] mwifiex: pcie: correct scratch register name
  2017-04-13  6:48 [PATCH v4 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Xinming Hu
  2017-04-13  6:48 ` [PATCH v4 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set Xinming Hu
@ 2017-04-13  6:48 ` Xinming Hu
  2017-04-13  6:48 ` [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset Xinming Hu
  2017-04-20  7:18 ` [v4, 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Kalle Valo
  3 siblings, 0 replies; 11+ messages in thread
From: Xinming Hu @ 2017-04-13  6:48 UTC (permalink / raw)
  To: Linux Wireless
  Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Xinming Hu

From: Xinming Hu <huxm@marvell.com>

This patch correct pcie scratch register name, to keep the same with
chipset side definition.

Signed-off-by: Xinming Hu <huxm@marvell.com>
---
v2: code clean and prepare for next patch 4/4
v4: same as v2, v3
---
 drivers/net/wireless/marvell/mwifiex/pcie.c |  4 ++--
 drivers/net/wireless/marvell/mwifiex/pcie.h | 13 +++++++------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index f45ab12..a07cb0a 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2494,8 +2494,8 @@ static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type,
 	struct pcie_service_card *card = adapter->card;
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
 	int pcie_scratch_reg[] = {PCIE_SCRATCH_12_REG,
-				  PCIE_SCRATCH_13_REG,
-				  PCIE_SCRATCH_14_REG};
+				  PCIE_SCRATCH_14_REG,
+				  PCIE_SCRATCH_15_REG};
 
 	if (!p)
 		return 0;
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h
index 00e8ee5..7e2450c 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -77,8 +77,9 @@
 #define PCIE_SCRATCH_10_REG				0xCE8
 #define PCIE_SCRATCH_11_REG				0xCEC
 #define PCIE_SCRATCH_12_REG				0xCF0
-#define PCIE_SCRATCH_13_REG				0xCF8
-#define PCIE_SCRATCH_14_REG				0xCFC
+#define PCIE_SCRATCH_13_REG				0xCF4
+#define PCIE_SCRATCH_14_REG				0xCF8
+#define PCIE_SCRATCH_15_REG				0xCFC
 #define PCIE_RD_DATA_PTR_Q0_Q1                          0xC08C
 #define PCIE_WR_DATA_PTR_Q0_Q1                          0xC05C
 
@@ -217,8 +218,8 @@ struct mwifiex_pcie_card_reg {
 	.ring_tx_start_ptr = MWIFIEX_BD_FLAG_TX_START_PTR,
 	.pfu_enabled = 1,
 	.sleep_cookie = 0,
-	.fw_dump_ctrl = 0xcf4,
-	.fw_dump_start = 0xcf8,
+	.fw_dump_ctrl = PCIE_SCRATCH_13_REG,
+	.fw_dump_start = PCIE_SCRATCH_14_REG,
 	.fw_dump_end = 0xcff,
 	.fw_dump_host_ready = 0xee,
 	.fw_dump_read_done = 0xfe,
@@ -254,8 +255,8 @@ struct mwifiex_pcie_card_reg {
 	.ring_tx_start_ptr = MWIFIEX_BD_FLAG_TX_START_PTR,
 	.pfu_enabled = 1,
 	.sleep_cookie = 0,
-	.fw_dump_ctrl = 0xcf4,
-	.fw_dump_start = 0xcf8,
+	.fw_dump_ctrl = PCIE_SCRATCH_13_REG,
+	.fw_dump_start = PCIE_SCRATCH_14_REG,
 	.fw_dump_end = 0xcff,
 	.fw_dump_host_ready = 0xcc,
 	.fw_dump_read_done = 0xdd,
-- 
1.8.1.4

^ permalink raw reply related	[flat|nested] 11+ messages in thread

* [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13  6:48 [PATCH v4 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Xinming Hu
  2017-04-13  6:48 ` [PATCH v4 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set Xinming Hu
  2017-04-13  6:48 ` [PATCH v4 3/4] mwifiex: pcie: correct scratch register name Xinming Hu
@ 2017-04-13  6:48 ` Xinming Hu
  2017-04-13 13:58   ` Kalle Valo
  2017-04-13 18:46   ` Brian Norris
  2017-04-20  7:18 ` [v4, 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Kalle Valo
  3 siblings, 2 replies; 11+ messages in thread
From: Xinming Hu @ 2017-04-13  6:48 UTC (permalink / raw)
  To: Linux Wireless
  Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Xinming Hu, Ganapathi Bhat

From: Xinming Hu <huxm@marvell.com>

A seprate wifi-only firmware was download during pcie function level reset.
It is in fact the tail part of wifi/bt combo firmware. Per Brian's and
Dmitry's suggestion, this patch extract the wifi part from combo firmware.

After that, we can discard the redudant image in linux-firmware repo.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
---
v2: extract wifi part from combo firmware(Dimtry and Brain)
    add more description(Kalle)
v3: same as v2
v4: add sequence comments, code enhance(Brain)
---
 drivers/net/wireless/marvell/mwifiex/fw.h   | 18 ++++++
 drivers/net/wireless/marvell/mwifiex/pcie.c | 93 ++++++++++++++++++++++++++---
 drivers/net/wireless/marvell/mwifiex/pcie.h |  3 +-
 3 files changed, 106 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
index 0b68374..6cf9ab9 100644
--- a/drivers/net/wireless/marvell/mwifiex/fw.h
+++ b/drivers/net/wireless/marvell/mwifiex/fw.h
@@ -43,6 +43,24 @@ struct tx_packet_hdr {
 	struct rfc_1042_hdr rfc1042_hdr;
 } __packed;
 
+struct mwifiex_fw_header {
+	__le32 dnld_cmd;
+	__le32 base_addr;
+	__le32 data_length;
+	__le32 crc;
+} __packed;
+
+struct mwifiex_fw_data {
+	struct mwifiex_fw_header header;
+	__le32 seq_num;
+	u8 data[1];
+} __packed;
+
+#define MWIFIEX_FW_DNLD_CMD_1 0x1
+#define MWIFIEX_FW_DNLD_CMD_5 0x5
+#define MWIFIEX_FW_DNLD_CMD_6 0x6
+#define MWIFIEX_FW_DNLD_CMD_7 0x7
+
 #define B_SUPPORTED_RATES               5
 #define G_SUPPORTED_RATES               9
 #define BG_SUPPORTED_RATES              13
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index a07cb0a..7b24bb4 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -1956,6 +1956,73 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
 	return ret;
 }
 
+/* Combo firmware image is a combination of
+ * (1) combo crc heaer, start with CMD5
+ * (2) bluetooth image, start with CMD7, end with CMD6, data wrapped in CMD1.
+ * (3) wifi image.
+ *
+ * This function bypass the header and bluetooth part, return
+ * the offset of tail wifi-only part.
+ */
+
+static int mwifiex_extract_wifi_fw(struct mwifiex_adapter *adapter,
+				   const void *firmware, u32 firmware_len) {
+	const struct mwifiex_fw_data *fwdata;
+	u32 offset = 0, data_len, dnld_cmd;
+	int ret = 0;
+	bool cmd7_before = false;
+
+	while (1) {
+		if (offset >= firmware_len) {
+			mwifiex_dbg(adapter, ERROR,
+				    "extract wifi-only fw failure!");
+			ret = -1;
+			goto done;
+		}
+
+		fwdata = firmware + offset;
+		dnld_cmd = le32_to_cpu(fwdata->header.dnld_cmd);
+		data_len = le32_to_cpu(fwdata->header.data_length);
+
+		switch (dnld_cmd) {
+		case MWIFIEX_FW_DNLD_CMD_1:
+			if (!cmd7_before) {
+				mwifiex_dbg(adapter, ERROR,
+					    "no cmd7 before cmd1!");
+				ret = -1;
+				goto done;
+			}
+			offset += data_len + sizeof(fwdata->header);
+			break;
+		case MWIFIEX_FW_DNLD_CMD_5:
+			offset += data_len + sizeof(fwdata->header);
+			break;
+		case MWIFIEX_FW_DNLD_CMD_6:
+			offset += data_len + sizeof(fwdata->header);
+			if (offset >= firmware_len) {
+				mwifiex_dbg(adapter, ERROR,
+					    "extract wifi-only fw failure!");
+				ret = -1;
+			} else {
+				ret = offset;
+			}
+			goto done;
+		case MWIFIEX_FW_DNLD_CMD_7:
+			cmd7_before = true;
+			offset += sizeof(fwdata->header);
+			break;
+		default:
+			mwifiex_dbg(adapter, ERROR, "unknown dnld_cmd %d\n",
+				    dnld_cmd);
+			ret = -1;
+			goto done;
+		}
+	}
+
+done:
+	return ret;
+}
+
 /*
  * This function downloads the firmware to the card.
  *
@@ -1971,7 +2038,7 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 	u32 firmware_len = fw->fw_len;
 	u32 offset = 0;
 	struct sk_buff *skb;
-	u32 txlen, tx_blocks = 0, tries, len;
+	u32 txlen, tx_blocks = 0, tries, len, val;
 	u32 block_retry_cnt = 0;
 	struct pcie_service_card *card = adapter->card;
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
@@ -1998,6 +2065,24 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 		goto done;
 	}
 
+	ret = mwifiex_read_reg(adapter, PCIE_SCRATCH_13_REG, &val);
+	if (ret) {
+		mwifiex_dbg(adapter, FATAL, "Failed to read scratch register 13\n");
+		goto done;
+	}
+
+	/* PCIE FLR case: extract wifi part from combo firmware*/
+	if (val == MWIFIEX_PCIE_FLR_HAPPENS) {
+		ret = mwifiex_extract_wifi_fw(adapter, firmware, firmware_len);
+		if (ret < 0) {
+			mwifiex_dbg(adapter, ERROR, "Failed to extract wifi fw\n");
+			goto done;
+		}
+		offset = ret;
+		mwifiex_dbg(adapter, MSG,
+			    "info: dnld wifi firmware from %d bytes\n", offset);
+	}
+
 	/* Perform firmware data transfer */
 	do {
 		u32 ireg_intr = 0;
@@ -3060,12 +3145,6 @@ static void mwifiex_pcie_up_dev(struct mwifiex_adapter *adapter)
 	struct pci_dev *pdev = card->dev;
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
 
-	/* Bluetooth is not on pcie interface. Download Wifi only firmware
-	 * during pcie FLR, so that bluetooth part of firmware which is
-	 * already running doesn't get affected.
-	 */
-	strcpy(adapter->fw_name, PCIE8997_DEFAULT_WIFIFW_NAME);
-
 	/* tx_buf_size might be changed to 3584 by firmware during
 	 * data transfer, we should reset it to default size.
 	 */
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h
index 7e2450c..f7ce9b6 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -35,7 +35,6 @@
 #define PCIE8897_B0_FW_NAME "mrvl/pcie8897_uapsta.bin"
 #define PCIEUART8997_FW_NAME_V4 "mrvl/pcieuart8997_combo_v4.bin"
 #define PCIEUSB8997_FW_NAME_V4 "mrvl/pcieusb8997_combo_v4.bin"
-#define PCIE8997_DEFAULT_WIFIFW_NAME "mrvl/pcie8997_wlan_v4.bin"
 
 #define PCIE_VENDOR_ID_MARVELL              (0x11ab)
 #define PCIE_VENDOR_ID_V2_MARVELL           (0x1b4b)
@@ -120,6 +119,8 @@
 #define MWIFIEX_SLEEP_COOKIE_SIZE			4
 #define MWIFIEX_MAX_DELAY_COUNT				100
 
+#define MWIFIEX_PCIE_FLR_HAPPENS 0xFEDCBABA
+
 struct mwifiex_pcie_card_reg {
 	u16 cmd_addr_lo;
 	u16 cmd_addr_hi;
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 11+ messages in thread

* Re: [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13  6:48 ` [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset Xinming Hu
@ 2017-04-13 13:58   ` Kalle Valo
  2017-04-14  4:51     ` [EXT] " Xinming Hu
  2017-04-13 18:46   ` Brian Norris
  1 sibling, 1 reply; 11+ messages in thread
From: Kalle Valo @ 2017-04-13 13:58 UTC (permalink / raw)
  To: Xinming Hu
  Cc: Linux Wireless, Brian Norris, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Xinming Hu, Ganapathi Bhat

Xinming Hu <huxinming820@gmail.com> writes:

> From: Xinming Hu <huxm@marvell.com>
>
> A seprate wifi-only firmware was download during pcie function level reset.
> It is in fact the tail part of wifi/bt combo firmware. Per Brian's and
> Dmitry's suggestion, this patch extract the wifi part from combo firmware.
>
> After that, we can discard the redudant image in linux-firmware repo.

If you mean with discarding removing the actual image from
linux-firmware, then you cannot do that. The image is still needed so
that linux-firmware works with older kernels.

-- 
Kalle Valo

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13  6:48 ` [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset Xinming Hu
  2017-04-13 13:58   ` Kalle Valo
@ 2017-04-13 18:46   ` Brian Norris
  2017-04-13 20:10     ` [PATCH v5 " Brian Norris
  1 sibling, 1 reply; 11+ messages in thread
From: Brian Norris @ 2017-04-13 18:46 UTC (permalink / raw)
  To: Xinming Hu
  Cc: Linux Wireless, Kalle Valo, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Xinming Hu, Ganapathi Bhat

Hi Xinming,

On Thu, Apr 13, 2017 at 06:48:22AM +0000, Xinming Hu wrote:
> From: Xinming Hu <huxm@marvell.com>
> 
> A seprate wifi-only firmware was download during pcie function level reset.
> It is in fact the tail part of wifi/bt combo firmware. Per Brian's and
> Dmitry's suggestion, this patch extract the wifi part from combo firmware.
> 
> After that, we can discard the redudant image in linux-firmware repo.
> 
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
> Signed-off-by: Cathy Luo <cluo@marvell.com>
> Reviewed-by: Brian Norris <briannorris@chromium.org>

Please don't add my Reviewed-by tag unless I've provided it explicitly.
And especially not if you have to change the patch significantly. (It's
fair to carry an old tag I've provided, if you only have to make minor
changes, or if I suggest *exactly* what needs changed, along with a
conditional 'Reviewed-by'.)

As it stands, this patch is worse than the previous one. I replied to
some of your commnets on v3, but I'll carry some here.

> ---
> v2: extract wifi part from combo firmware(Dimtry and Brain)
>     add more description(Kalle)
> v3: same as v2
> v4: add sequence comments, code enhance(Brain)
> ---
>  drivers/net/wireless/marvell/mwifiex/fw.h   | 18 ++++++
>  drivers/net/wireless/marvell/mwifiex/pcie.c | 93 ++++++++++++++++++++++++++---
>  drivers/net/wireless/marvell/mwifiex/pcie.h |  3 +-
>  3 files changed, 106 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
> index 0b68374..6cf9ab9 100644
> --- a/drivers/net/wireless/marvell/mwifiex/fw.h
> +++ b/drivers/net/wireless/marvell/mwifiex/fw.h
> @@ -43,6 +43,24 @@ struct tx_packet_hdr {
>  	struct rfc_1042_hdr rfc1042_hdr;
>  } __packed;
>  
> +struct mwifiex_fw_header {
> +	__le32 dnld_cmd;
> +	__le32 base_addr;
> +	__le32 data_length;
> +	__le32 crc;
> +} __packed;
> +
> +struct mwifiex_fw_data {
> +	struct mwifiex_fw_header header;
> +	__le32 seq_num;
> +	u8 data[1];
> +} __packed;
> +
> +#define MWIFIEX_FW_DNLD_CMD_1 0x1
> +#define MWIFIEX_FW_DNLD_CMD_5 0x5
> +#define MWIFIEX_FW_DNLD_CMD_6 0x6
> +#define MWIFIEX_FW_DNLD_CMD_7 0x7
> +
>  #define B_SUPPORTED_RATES               5
>  #define G_SUPPORTED_RATES               9
>  #define BG_SUPPORTED_RATES              13
> diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
> index a07cb0a..7b24bb4 100644
> --- a/drivers/net/wireless/marvell/mwifiex/pcie.c
> +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
> @@ -1956,6 +1956,73 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
>  	return ret;
>  }
>  
> +/* Combo firmware image is a combination of
> + * (1) combo crc heaer, start with CMD5
> + * (2) bluetooth image, start with CMD7, end with CMD6, data wrapped in CMD1.
> + * (3) wifi image.
> + *
> + * This function bypass the header and bluetooth part, return
> + * the offset of tail wifi-only part.
> + */
> +
> +static int mwifiex_extract_wifi_fw(struct mwifiex_adapter *adapter,
> +				   const void *firmware, u32 firmware_len) {
> +	const struct mwifiex_fw_data *fwdata;
> +	u32 offset = 0, data_len, dnld_cmd;
> +	int ret = 0;
> +	bool cmd7_before = false;
> +
> +	while (1) {
> +		if (offset >= firmware_len) {

This is worse than what you used to have. This should still be:

		if (offset + sizeof(fwdata->header) >= firmware_len) {

And you might add an overflow check here too, so:

		/* Check for integer and buffer overflow */
		if (offset + sizeof(fwdata->header) < sizeof(fwdata->header) ||
		    offset + sizeof(fwdata->header) >= firmware_len) {

> +			mwifiex_dbg(adapter, ERROR,
> +				    "extract wifi-only fw failure!");

Needs a '\n'.

> +			ret = -1;
> +			goto done;
> +		}
> +
> +		fwdata = firmware + offset;
> +		dnld_cmd = le32_to_cpu(fwdata->header.dnld_cmd);
> +		data_len = le32_to_cpu(fwdata->header.data_length);
> +

Then:

		offset += sizeof(fwdata->header);

> +		switch (dnld_cmd) {
> +		case MWIFIEX_FW_DNLD_CMD_1:
> +			if (!cmd7_before) {
> +				mwifiex_dbg(adapter, ERROR,
> +					    "no cmd7 before cmd1!");

Needs a '\n'.

> +				ret = -1;
> +				goto done;
> +			}
> +			offset += data_len + sizeof(fwdata->header);

Replace with:

			if (offset + data_len < data_len) {
				mwifiex_dbg(adapter, ERROR, "bad firmware\n");
				ret = -1;
				goto done;
			}
			offset += data_len;

> +			break;
> +		case MWIFIEX_FW_DNLD_CMD_5:
> +			offset += data_len + sizeof(fwdata->header);

Replace with:

			if (offset + data_len < data_len) {
				mwifiex_dbg(adapter, ERROR, "bad firmware\n");
				ret = -1;
				goto done;
			}
			offset += data_len;

> +			break;
> +		case MWIFIEX_FW_DNLD_CMD_6:
> +			offset += data_len + sizeof(fwdata->header);

Replace with:

			if (offset + data_len < data_len) {
				mwifiex_dbg(adapter, ERROR, "bad firmware\n");
				ret = -1;
				goto done;
			}
			offset += data_len;

> +			if (offset >= firmware_len) {
> +				mwifiex_dbg(adapter, ERROR,
> +					    "extract wifi-only fw failure!");

Needs a '\n'.

> +				ret = -1;
> +			} else {
> +				ret = offset;
> +			}
> +			goto done;
> +		case MWIFIEX_FW_DNLD_CMD_7:
> +			cmd7_before = true;
> +			offset += sizeof(fwdata->header);

Now you can delete this line.

> +			break;
> +		default:
> +			mwifiex_dbg(adapter, ERROR, "unknown dnld_cmd %d\n",
> +				    dnld_cmd);
> +			ret = -1;
> +			goto done;
> +		}
> +	}
> +
> +done:
> +	return ret;
> +}
> +
>  /*
>   * This function downloads the firmware to the card.
>   *

[...]

I might just rewrite this and send it myself, if I get the time.

Brian

^ permalink raw reply	[flat|nested] 11+ messages in thread

* [PATCH v5 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13 18:46   ` Brian Norris
@ 2017-04-13 20:10     ` Brian Norris
  2017-04-15  9:33       ` Xinming Hu
  2017-04-20  7:21       ` [v5, " Kalle Valo
  0 siblings, 2 replies; 11+ messages in thread
From: Brian Norris @ 2017-04-13 20:10 UTC (permalink / raw)
  To: Xinming Hu
  Cc: Linux Wireless, Kalle Valo, Dmitry Torokhov, rajatja, Cathy Luo,
	Xinming Hu, Ganapathi Bhat

From: Xinming Hu <huxm@marvell.com>

A separate wifi-only firmware was download during pcie function level
reset. It is in fact the tail part of wifi/bt combo firmware. Per
Brian's and Dmitry's suggestion, this patch extract the wifi part from
combo firmware.

After that, the mrvl/pcie8997_wlan_v4.bin image in linux-firmware repo
is redundant (though I guess we keep it around to support older
kernels).

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
On Thu, Apr 13, 2017 at 11:46:30AM -0700, Brian Norris wrote:
> I might just rewrite this and send it myself, if I get the time.

Done.

v2: extract wifi part from combo firmware(Dmitry and Brian)
    add more description(Kalle)
v3: same as v2
v4: add sequence comments, code enhance(Brian)
v5: (Brian) fix overflow errors
    (Brian) add missing newline chars
    (Brian) consolidate header-skipping logic

Note: I only resubmitted the 4th patch, as the others look fine
---
 drivers/net/wireless/marvell/mwifiex/fw.h   |  18 +++++
 drivers/net/wireless/marvell/mwifiex/pcie.c | 114 ++++++++++++++++++++++++++--
 drivers/net/wireless/marvell/mwifiex/pcie.h |   3 +-
 3 files changed, 127 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
index 0b683742e30c..6cf9ab9133ea 100644
--- a/drivers/net/wireless/marvell/mwifiex/fw.h
+++ b/drivers/net/wireless/marvell/mwifiex/fw.h
@@ -43,6 +43,24 @@ struct tx_packet_hdr {
 	struct rfc_1042_hdr rfc1042_hdr;
 } __packed;
 
+struct mwifiex_fw_header {
+	__le32 dnld_cmd;
+	__le32 base_addr;
+	__le32 data_length;
+	__le32 crc;
+} __packed;
+
+struct mwifiex_fw_data {
+	struct mwifiex_fw_header header;
+	__le32 seq_num;
+	u8 data[1];
+} __packed;
+
+#define MWIFIEX_FW_DNLD_CMD_1 0x1
+#define MWIFIEX_FW_DNLD_CMD_5 0x5
+#define MWIFIEX_FW_DNLD_CMD_6 0x6
+#define MWIFIEX_FW_DNLD_CMD_7 0x7
+
 #define B_SUPPORTED_RATES               5
 #define G_SUPPORTED_RATES               9
 #define BG_SUPPORTED_RATES              13
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 061223149bed..63102efb388e 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -1956,6 +1956,94 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
 	return ret;
 }
 
+/* Combo firmware image is a combination of
+ * (1) combo crc heaer, start with CMD5
+ * (2) bluetooth image, start with CMD7, end with CMD6, data wrapped in CMD1.
+ * (3) wifi image.
+ *
+ * This function bypass the header and bluetooth part, return
+ * the offset of tail wifi-only part.
+ */
+
+static int mwifiex_extract_wifi_fw(struct mwifiex_adapter *adapter,
+				   const void *firmware, u32 firmware_len) {
+	const struct mwifiex_fw_data *fwdata;
+	u32 offset = 0, data_len, dnld_cmd;
+	int ret = 0;
+	bool cmd7_before = false;
+
+	while (1) {
+		/* Check for integer and buffer overflow */
+		if (offset + sizeof(fwdata->header) < sizeof(fwdata->header) ||
+		    offset + sizeof(fwdata->header) >= firmware_len) {
+			mwifiex_dbg(adapter, ERROR,
+				    "extract wifi-only fw failure!\n");
+			ret = -1;
+			goto done;
+		}
+
+		fwdata = firmware + offset;
+		dnld_cmd = le32_to_cpu(fwdata->header.dnld_cmd);
+		data_len = le32_to_cpu(fwdata->header.data_length);
+
+		/* Skip past header */
+		offset += sizeof(fwdata->header);
+
+		switch (dnld_cmd) {
+		case MWIFIEX_FW_DNLD_CMD_1:
+			if (!cmd7_before) {
+				mwifiex_dbg(adapter, ERROR,
+					    "no cmd7 before cmd1!\n");
+				ret = -1;
+				goto done;
+			}
+			if (offset + data_len < data_len) {
+				mwifiex_dbg(adapter, ERROR, "bad FW parse\n");
+				ret = -1;
+				goto done;
+			}
+			offset += data_len;
+			break;
+		case MWIFIEX_FW_DNLD_CMD_5:
+			/* Check for integer overflow */
+			if (offset + data_len < data_len) {
+				mwifiex_dbg(adapter, ERROR, "bad FW parse\n");
+				ret = -1;
+				goto done;
+			}
+			offset += data_len;
+			break;
+		case MWIFIEX_FW_DNLD_CMD_6:
+			/* Check for integer overflow */
+			if (offset + data_len < data_len) {
+				mwifiex_dbg(adapter, ERROR, "bad FW parse\n");
+				ret = -1;
+				goto done;
+			}
+			offset += data_len;
+			if (offset >= firmware_len) {
+				mwifiex_dbg(adapter, ERROR,
+					    "extract wifi-only fw failure!\n");
+				ret = -1;
+			} else {
+				ret = offset;
+			}
+			goto done;
+		case MWIFIEX_FW_DNLD_CMD_7:
+			cmd7_before = true;
+			break;
+		default:
+			mwifiex_dbg(adapter, ERROR, "unknown dnld_cmd %d\n",
+				    dnld_cmd);
+			ret = -1;
+			goto done;
+		}
+	}
+
+done:
+	return ret;
+}
+
 /*
  * This function downloads the firmware to the card.
  *
@@ -1971,7 +2059,7 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 	u32 firmware_len = fw->fw_len;
 	u32 offset = 0;
 	struct sk_buff *skb;
-	u32 txlen, tx_blocks = 0, tries, len;
+	u32 txlen, tx_blocks = 0, tries, len, val;
 	u32 block_retry_cnt = 0;
 	struct pcie_service_card *card = adapter->card;
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
@@ -1998,6 +2086,24 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 		goto done;
 	}
 
+	ret = mwifiex_read_reg(adapter, PCIE_SCRATCH_13_REG, &val);
+	if (ret) {
+		mwifiex_dbg(adapter, FATAL, "Failed to read scratch register 13\n");
+		goto done;
+	}
+
+	/* PCIE FLR case: extract wifi part from combo firmware*/
+	if (val == MWIFIEX_PCIE_FLR_HAPPENS) {
+		ret = mwifiex_extract_wifi_fw(adapter, firmware, firmware_len);
+		if (ret < 0) {
+			mwifiex_dbg(adapter, ERROR, "Failed to extract wifi fw\n");
+			goto done;
+		}
+		offset = ret;
+		mwifiex_dbg(adapter, MSG,
+			    "info: dnld wifi firmware from %d bytes\n", offset);
+	}
+
 	/* Perform firmware data transfer */
 	do {
 		u32 ireg_intr = 0;
@@ -3070,12 +3176,6 @@ static void mwifiex_pcie_up_dev(struct mwifiex_adapter *adapter)
 	struct pci_dev *pdev = card->dev;
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
 
-	/* Bluetooth is not on pcie interface. Download Wifi only firmware
-	 * during pcie FLR, so that bluetooth part of firmware which is
-	 * already running doesn't get affected.
-	 */
-	strcpy(adapter->fw_name, PCIE8997_DEFAULT_WIFIFW_NAME);
-
 	/* tx_buf_size might be changed to 3584 by firmware during
 	 * data transfer, we should reset it to default size.
 	 */
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h
index 7e2450ce79d3..f7ce9b6db6b4 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -35,7 +35,6 @@
 #define PCIE8897_B0_FW_NAME "mrvl/pcie8897_uapsta.bin"
 #define PCIEUART8997_FW_NAME_V4 "mrvl/pcieuart8997_combo_v4.bin"
 #define PCIEUSB8997_FW_NAME_V4 "mrvl/pcieusb8997_combo_v4.bin"
-#define PCIE8997_DEFAULT_WIFIFW_NAME "mrvl/pcie8997_wlan_v4.bin"
 
 #define PCIE_VENDOR_ID_MARVELL              (0x11ab)
 #define PCIE_VENDOR_ID_V2_MARVELL           (0x1b4b)
@@ -120,6 +119,8 @@
 #define MWIFIEX_SLEEP_COOKIE_SIZE			4
 #define MWIFIEX_MAX_DELAY_COUNT				100
 
+#define MWIFIEX_PCIE_FLR_HAPPENS 0xFEDCBABA
+
 struct mwifiex_pcie_card_reg {
 	u16 cmd_addr_lo;
 	u16 cmd_addr_hi;
-- 
2.12.2.762

^ permalink raw reply related	[flat|nested] 11+ messages in thread

* RE: [EXT] Re: [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13 13:58   ` Kalle Valo
@ 2017-04-14  4:51     ` Xinming Hu
  0 siblings, 0 replies; 11+ messages in thread
From: Xinming Hu @ 2017-04-14  4:51 UTC (permalink / raw)
  To: Kalle Valo, Xinming Hu
  Cc: Linux Wireless, Brian Norris, Dmitry Torokhov, rajatja,
	Amitkumar Karwar, Cathy Luo, Ganapathi Bhat

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Cj4gLS0NCj4gS2FsbGUgVmFsbw0K

^ permalink raw reply	[flat|nested] 11+ messages in thread

* RE: [PATCH v5 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13 20:10     ` [PATCH v5 " Brian Norris
@ 2017-04-15  9:33       ` Xinming Hu
  2017-04-20  7:21       ` [v5, " Kalle Valo
  1 sibling, 0 replies; 11+ messages in thread
From: Xinming Hu @ 2017-04-15  9:33 UTC (permalink / raw)
  To: Brian Norris, Xinming Hu
  Cc: Linux Wireless, Kalle Valo, Dmitry Torokhov, rajatja, Cathy Luo,
	Ganapathi Bhat

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^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [v4, 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check
  2017-04-13  6:48 [PATCH v4 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Xinming Hu
                   ` (2 preceding siblings ...)
  2017-04-13  6:48 ` [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset Xinming Hu
@ 2017-04-20  7:18 ` Kalle Valo
  3 siblings, 0 replies; 11+ messages in thread
From: Kalle Valo @ 2017-04-20  7:18 UTC (permalink / raw)
  To: Xinming Hu
  Cc: Linux Wireless, Kalle Valo, Brian Norris, Dmitry Torokhov,
	rajatja, Amitkumar Karwar, Cathy Luo, Xinming Hu

Xinming Hu <huxinming820@gmail.com> wrote:
> From: Xinming Hu <huxm@marvell.com>
> 
> If wakeup interrupt handler is called, we know that the wakeup
> interrupt number is valid, there is no need to check it.
> 
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Cathy Luo <cluo@marvell.com>
> Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
> Reviewed-by: Brian Norris <briannorris@chromium.org>

3 patches applied to wireless-drivers-next.git, thanks.

625b4dba57b2 mwifiex: remove unnecessary wakeup interrupt number sanity check
ef6c7d3cb731 mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set
127ee1db0970 mwifiex: pcie: correct scratch register name

-- 
https://patchwork.kernel.org/patch/9678763/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [v5, 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset
  2017-04-13 20:10     ` [PATCH v5 " Brian Norris
  2017-04-15  9:33       ` Xinming Hu
@ 2017-04-20  7:21       ` Kalle Valo
  1 sibling, 0 replies; 11+ messages in thread
From: Kalle Valo @ 2017-04-20  7:21 UTC (permalink / raw)
  To: Brian Norris
  Cc: Xinming Hu, Linux Wireless, Kalle Valo, Dmitry Torokhov, rajatja,
	Cathy Luo, Xinming Hu, Ganapathi Bhat

Brian Norris <briannorris@chromium.org> wrote:
> From: Xinming Hu <huxm@marvell.com>
> 
> A separate wifi-only firmware was download during pcie function level
> reset. It is in fact the tail part of wifi/bt combo firmware. Per
> Brian's and Dmitry's suggestion, this patch extract the wifi part from
> combo firmware.
> 
> After that, the mrvl/pcie8997_wlan_v4.bin image in linux-firmware repo
> is redundant (though I guess we keep it around to support older
> kernels).
> 
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
> Signed-off-by: Cathy Luo <cluo@marvell.com>
> Signed-off-by: Brian Norris <briannorris@chromium.org>

Patch applied to wireless-drivers-next.git, thanks.

efde6648a618 mwifiex: pcie: extract wifi part from combo firmware during function level reset

-- 
https://patchwork.kernel.org/patch/9679957/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2017-04-20  7:21 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-04-13  6:48 [PATCH v4 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Xinming Hu
2017-04-13  6:48 ` [PATCH v4 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set Xinming Hu
2017-04-13  6:48 ` [PATCH v4 3/4] mwifiex: pcie: correct scratch register name Xinming Hu
2017-04-13  6:48 ` [PATCH v4 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset Xinming Hu
2017-04-13 13:58   ` Kalle Valo
2017-04-14  4:51     ` [EXT] " Xinming Hu
2017-04-13 18:46   ` Brian Norris
2017-04-13 20:10     ` [PATCH v5 " Brian Norris
2017-04-15  9:33       ` Xinming Hu
2017-04-20  7:21       ` [v5, " Kalle Valo
2017-04-20  7:18 ` [v4, 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check Kalle Valo

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