[PATCH v2 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check

[PATCH v2 1/4] mwifiex: remove unnecessary wakeup interrupt number sanity check

[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)
---
 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

[PATCH v2 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set

[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>
---
v2: enhance adapter->dev null case.(Brain)
---
 drivers/net/wireless/marvell/mwifiex/main.c | 17 ++++++++++++-----
 drivers/net/wireless/marvell/mwifiex/main.h |  2 ++
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 98fd491..f3e772f 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1749,18 +1749,25 @@ void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
 {
 	struct va_format vaf;
 	va_list args;
+	char msg[MWIFIEX_LOG_LEN];
 
-	if (!adapter->dev || !(adapter->debug_mask & mask))
+	if (!(adapter->debug_mask & mask))
 		return;
 
 	va_start(args, fmt);
 
-	vaf.fmt = fmt;
-	vaf.va = &args;
-
-	dev_info(adapter->dev, "%pV", &vaf);
+	if (!adapter->dev) {
+		vsnprintf(msg, MWIFIEX_LOG_LEN, fmt, args);
+	} else {
+		vaf.fmt = fmt;
+		vaf.va = &args;
+		dev_info(adapter->dev, "%pV", &vaf);
+	}
 
 	va_end(args);
+
+	if (!adapter->dev)
+		pr_info("%s", msg);
 }
 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
 
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index f1cb875..d4289a9 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -164,6 +164,8 @@ enum {
 /* Address alignment */
 #define MWIFIEX_ALIGN_ADDR(p, a) (((long)(p) + (a) - 1) & ~((a) - 1))
 
+#define MWIFIEX_LOG_LEN 120
+
 /**
  *enum mwifiex_debug_level  -  marvell wifi debug level
  */
-- 
1.8.1.4

[PATCH v2 3/4] mwifiex: pcie: correct scratch register name

[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
---
 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

[PATCH v2 4/4] mwifiex: pcie: extract wifi part from combo firmware during function level reset

[Xinming Hu]

From: Xinming Hu <huxm@marvell.com>

A seperate 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>
---
v2: extract wifi part from combo firmware(Dimtry and Brain)
    add more description(Kalle)
---
 drivers/net/wireless/marvell/mwifiex/fw.h   | 18 +++++++
 drivers/net/wireless/marvell/mwifiex/pcie.c | 83 ++++++++++++++++++++++++++---
 drivers/net/wireless/marvell/mwifiex/pcie.h |  2 +
 3 files changed, 96 insertions(+), 7 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..ebf00d9 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -1956,6 +1956,63 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
 	return ret;
 }
 
+/* Extract wifi part from wifi-bt combo firmware image.
+ */
+
+static int mwifiex_extract_wifi_fw(struct mwifiex_adapter *adapter,
+				   u8 *firmware, u32 firmware_len) {
+	struct mwifiex_fw_data fwdata;
+	u32 offset = 0, data_len, dnld_cmd;
+	int ret = 0;
+	bool cmd7_before = false;
+
+	while (1) {
+		if (offset + sizeof(fwdata.header) >= firmware_len) {
+			mwifiex_dbg(adapter, ERROR,
+				    "extract wifi-only firmware failure!");
+			ret = -1;
+			goto done;
+		}
+
+		memcpy(&fwdata.header, firmware + offset,
+		       sizeof(fwdata.header));
+		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);
+			ret = offset;
+			goto done;
+		case MWIFIEX_FW_DNLD_CMD_7:
+			if (!cmd7_before)
+				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 +2028,7 @@ 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 +2055,24 @@ 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 +3135,6 @@ 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 6ac7dcb..5bbadf7 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -120,6 +120,8 @@
 #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;
-- 
1.8.1.4

Re: [PATCH v2 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set

[Dmitry Torokhov]

Hi Xinming,

On Fri, Apr 7, 2017 at 3:51 AM, Xinming Hu <huxinming820@gmail.com> wrote:
> 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>
> ---
> v2: enhance adapter->dev null case.(Brain)
> ---
>  drivers/net/wireless/marvell/mwifiex/main.c | 17 ++++++++++++-----
>  drivers/net/wireless/marvell/mwifiex/main.h |  2 ++
>  2 files changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
> index 98fd491..f3e772f 100644
> --- a/drivers/net/wireless/marvell/mwifiex/main.c
> +++ b/drivers/net/wireless/marvell/mwifiex/main.c
> @@ -1749,18 +1749,25 @@ void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
>  {
>         struct va_format vaf;
>         va_list args;
> +       char msg[MWIFIEX_LOG_LEN];
>
> -       if (!adapter->dev || !(adapter->debug_mask & mask))
> +       if (!(adapter->debug_mask & mask))
>                 return;
>
>         va_start(args, fmt);
>
> -       vaf.fmt = fmt;
> -       vaf.va = &args;
> -
> -       dev_info(adapter->dev, "%pV", &vaf);
> +       if (!adapter->dev) {
> +               vsnprintf(msg, MWIFIEX_LOG_LEN, fmt, args);
> +       } else {
> +               vaf.fmt = fmt;
> +               vaf.va = &args;
> +               dev_info(adapter->dev, "%pV", &vaf);
> +       }
>
>         va_end(args);
> +
> +       if (!adapter->dev)
> +               pr_info("%s", msg);

Why not:

vaf.fmt = fmt;
vaf.va = &args;

if (adapter->dev)
        dev_info(adapter->dev, "%pV", &vaf);
else
        pr_info("mwifiex: %pV", &vaf);

va_end(args);

Also, instead of static "mwifiex" prefix maybe make sure you have
pr_fmt() set properly (I am not sure if it is set or not).

Thanks.

-- 
Dmitry

RE: Re: [PATCH v2 2/4] mwifiex: fall back mwifiex_dbg to pr_info when adapter->dev not set

[Xinming Hu]

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