Commit 1b3eb823 authored by Wey-Yi Guy's avatar Wey-Yi Guy Committed by John W. Linville
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iwlwifi: display flowhandler register when sw error or on-demand 



Flowhandler handle the communication between driver and uCode, when any
uCode error happen, we also like to know what is the status of the
flowhandler; it can help to debug flowhandler related problem.

Also adding debugfs file to dump current value of flowhandler registers.

Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 2a11df6e

drivers/net/wireless/iwlwifi/iwl-1000.c

+1 −0
Original line number Diff line number Diff line
@@ -106,6 +106,7 @@ static struct iwl_lib_ops iwl1000_lib = { 
	.dump_nic_event_log = iwl_dump_nic_event_log,

	.dump_nic_error_log = iwl_dump_nic_error_log,

	.dump_csr = iwl_dump_csr,

	.dump_fh = iwl_dump_fh,

	.init_alive_start = iwl5000_init_alive_start,

	.alive_notify = iwl5000_alive_notify,

	.send_tx_power = iwl5000_send_tx_power,

drivers/net/wireless/iwlwifi/iwl-5000.c

+1 −0
Original line number Diff line number Diff line
@@ -1467,6 +1467,7 @@ struct iwl_lib_ops iwl5000_lib = { 
	.dump_nic_event_log = iwl_dump_nic_event_log,

	.dump_nic_error_log = iwl_dump_nic_error_log,

	.dump_csr = iwl_dump_csr,

	.dump_fh = iwl_dump_fh,

	.load_ucode = iwl5000_load_ucode,

	.init_alive_start = iwl5000_init_alive_start,

	.alive_notify = iwl5000_alive_notify,

drivers/net/wireless/iwlwifi/iwl-6000.c

+1 −0
Original line number Diff line number Diff line
@@ -216,6 +216,7 @@ static struct iwl_lib_ops iwl6000_lib = { 
	.dump_nic_event_log = iwl_dump_nic_event_log,

	.dump_nic_error_log = iwl_dump_nic_error_log,

	.dump_csr = iwl_dump_csr,

	.dump_fh = iwl_dump_fh,

	.init_alive_start = iwl5000_init_alive_start,

	.alive_notify = iwl5000_alive_notify,

	.send_tx_power = iwl5000_send_tx_power,

drivers/net/wireless/iwlwifi/iwl-core.c

+65 −0
Original line number Diff line number Diff line
@@ -1353,6 +1353,8 @@ void iwl_irq_handle_error(struct iwl_priv *priv) 
	priv->cfg->ops->lib->dump_nic_error_log(priv);

	if (priv->cfg->ops->lib->dump_csr)

		priv->cfg->ops->lib->dump_csr(priv);

	if (priv->cfg->ops->lib->dump_fh)

		priv->cfg->ops->lib->dump_fh(priv, NULL, false);

	priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);

#ifdef CONFIG_IWLWIFI_DEBUG

	if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
@@ -3278,6 +3280,69 @@ void iwl_dump_csr(struct iwl_priv *priv) 
}

EXPORT_SYMBOL(iwl_dump_csr);



const static char *get_fh_string(int cmd)

{

	switch (cmd) {

		IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);

		IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);

		IWL_CMD(FH_RSCSR_CHNL0_WPTR);

		IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);

		IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);

		IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);

		IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);

		IWL_CMD(FH_TSSR_TX_STATUS_REG);

		IWL_CMD(FH_TSSR_TX_ERROR_REG);

	default:

		return "UNKNOWN";



	}

}



int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)

{

	int i;

#ifdef CONFIG_IWLWIFI_DEBUG

	int pos = 0;

	size_t bufsz = 0;

#endif

	u32 fh_tbl[] = {

		FH_RSCSR_CHNL0_STTS_WPTR_REG,

		FH_RSCSR_CHNL0_RBDCB_BASE_REG,

		FH_RSCSR_CHNL0_WPTR,

		FH_MEM_RCSR_CHNL0_CONFIG_REG,

		FH_MEM_RSSR_SHARED_CTRL_REG,

		FH_MEM_RSSR_RX_STATUS_REG,

		FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,

		FH_TSSR_TX_STATUS_REG,

		FH_TSSR_TX_ERROR_REG

	};

#ifdef CONFIG_IWLWIFI_DEBUG

	if (display) {

		bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;

		*buf = kmalloc(bufsz, GFP_KERNEL);

		if (!*buf)

			return -ENOMEM;

		pos += scnprintf(*buf + pos, bufsz - pos,

				"FH register values:\n");

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

			pos += scnprintf(*buf + pos, bufsz - pos,

				"  %34s: 0X%08x\n",

				get_fh_string(fh_tbl[i]),

				iwl_read_direct32(priv, fh_tbl[i]));

		}

		return pos;

	}

#endif

	IWL_ERR(priv, "FH register values:\n");

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

		IWL_ERR(priv, "  %34s: 0X%08x\n",

			get_fh_string(fh_tbl[i]),

			iwl_read_direct32(priv, fh_tbl[i]));

	}

	return 0;

}

EXPORT_SYMBOL(iwl_dump_fh);



#ifdef CONFIG_PM



int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)

drivers/net/wireless/iwlwifi/iwl-core.h

+2 −0
Original line number Diff line number Diff line
@@ -171,6 +171,7 @@ struct iwl_lib_ops { 
				  bool full_log, char **buf, bool display);

	void (*dump_nic_error_log)(struct iwl_priv *priv);

	void (*dump_csr)(struct iwl_priv *priv);

	int (*dump_fh)(struct iwl_priv *priv, char **buf, bool display);

	int (*set_channel_switch)(struct iwl_priv *priv, u16 channel);

	/* power management */

	struct iwl_apm_ops apm_ops;
@@ -582,6 +583,7 @@ void iwl_dump_nic_error_log(struct iwl_priv *priv); 
int iwl_dump_nic_event_log(struct iwl_priv *priv,

			   bool full_log, char **buf, bool display);

void iwl_dump_csr(struct iwl_priv *priv);

int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display);

#ifdef CONFIG_IWLWIFI_DEBUG

void iwl_print_rx_config_cmd(struct iwl_priv *priv);

#else

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