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Commit 4646968b authored by Xinming Hu's avatar Xinming Hu Committed by Kalle Valo
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mwifiex: dump pcie scratch registers 



This patch prints pcie scratch registers during firmware dump. They
will be useful for analysing firmware status.

Signed-off-by: default avatarXinming Hu <huxm@marvell.com>
Signed-off-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent bf00dc22

drivers/net/wireless/marvell/mwifiex/main.c

+5 −3
Original line number Diff line number Diff line
@@ -1074,12 +1074,14 @@ void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) 
			     priv->netdev->name, priv->num_tx_timeout);

	}



	if (adapter->iface_type == MWIFIEX_SDIO) {

		p += sprintf(p, "\n=== SDIO register dump===\n");

	if (adapter->iface_type == MWIFIEX_SDIO ||

	    adapter->iface_type == MWIFIEX_PCIE) {

		p += sprintf(p, "\n=== %s register dump===\n",

			     adapter->iface_type == MWIFIEX_SDIO ?

							"SDIO" : "PCIE");

		if (adapter->if_ops.reg_dump)

			p += adapter->if_ops.reg_dump(adapter, p);

	}



	p += sprintf(p, "\n=== more debug information\n");

	debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);

	if (debug_info) {

drivers/net/wireless/marvell/mwifiex/pcie.c

+42 −0
Original line number Diff line number Diff line
@@ -2355,6 +2355,47 @@ static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type, 
	return 0;

}



/* Function to dump PCIE scratch registers in case of FW crash

 */

static int

mwifiex_pcie_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)

{

	char *p = drv_buf;

	char buf[256], *ptr;

	int i;

	u32 value;

	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};



	if (!p)

		return 0;



	mwifiex_dbg(adapter, MSG, "PCIE register dump start\n");



	if (mwifiex_read_reg(adapter, reg->fw_status, &value)) {

		mwifiex_dbg(adapter, ERROR, "failed to read firmware status");

		return 0;

	}



	ptr = buf;

	mwifiex_dbg(adapter, MSG, "pcie scratch register:");

	for (i = 0; i < ARRAY_SIZE(pcie_scratch_reg); i++) {

		mwifiex_read_reg(adapter, pcie_scratch_reg[i], &value);

		ptr += sprintf(ptr, "reg:0x%x, value=0x%x\n",

			       pcie_scratch_reg[i], value);

	}



	mwifiex_dbg(adapter, MSG, "%s\n", buf);

	p += sprintf(p, "%s\n", buf);



	mwifiex_dbg(adapter, MSG, "PCIE register dump end\n");



	return p - drv_buf;

}



/* This function read/write firmware */

static enum rdwr_status

mwifiex_pcie_rdwr_firmware(struct mwifiex_adapter *adapter, u8 doneflag)
@@ -2899,6 +2940,7 @@ static struct mwifiex_if_ops pcie_ops = { 
	.cleanup_mpa_buf =		NULL,

	.init_fw_port =			mwifiex_pcie_init_fw_port,

	.clean_pcie_ring =		mwifiex_clean_pcie_ring_buf,

	.reg_dump =			mwifiex_pcie_reg_dump,

	.device_dump =			mwifiex_pcie_device_dump,

};

drivers/net/wireless/marvell/mwifiex/pcie.h

+2 −0
Original line number Diff line number Diff line
@@ -73,6 +73,8 @@ 
#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_RD_DATA_PTR_Q0_Q1                          0xC08C

#define PCIE_WR_DATA_PTR_Q0_Q1                          0xC05C