Commit 49dc6a18 authored by Brian King's avatar Brian King Committed by James Bottomley
Browse files

[SCSI] ipr: Add support for logging SAS fabric errors 



Adds support for logging SAS fabric errors logged by
the ipr firmware.

Signed-off-by: default avatarBrian King <brking@us.ibm.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 9d66bdf8

drivers/scsi/ipr.c

+218 −7
Original line number Diff line number Diff line
@@ -1321,6 +1321,219 @@ static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 
			  offsetof(struct ipr_hostrcb_type_07_error, data)));

}



static const struct {

	u8 active;

	char *desc;

} path_active_desc[] = {

	{ IPR_PATH_NO_INFO, "Path" },

	{ IPR_PATH_ACTIVE, "Active path" },

	{ IPR_PATH_NOT_ACTIVE, "Inactive path" }

};



static const struct {

	u8 state;

	char *desc;

} path_state_desc[] = {

	{ IPR_PATH_STATE_NO_INFO, "has no path state information available" },

	{ IPR_PATH_HEALTHY, "is healthy" },

	{ IPR_PATH_DEGRADED, "is degraded" },

	{ IPR_PATH_FAILED, "is failed" }

};



/**

 * ipr_log_fabric_path - Log a fabric path error

 * @hostrcb:	hostrcb struct

 * @fabric:		fabric descriptor

 *

 * Return value:

 * 	none

 **/

static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,

				struct ipr_hostrcb_fabric_desc *fabric)

{

	int i, j;

	u8 path_state = fabric->path_state;

	u8 active = path_state & IPR_PATH_ACTIVE_MASK;

	u8 state = path_state & IPR_PATH_STATE_MASK;



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

		if (path_active_desc[i].active != active)

			continue;



		for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {

			if (path_state_desc[j].state != state)

				continue;



			if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {

				ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",

					     path_active_desc[i].desc, path_state_desc[j].desc,

					     fabric->ioa_port);

			} else if (fabric->cascaded_expander == 0xff) {

				ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",

					     path_active_desc[i].desc, path_state_desc[j].desc,

					     fabric->ioa_port, fabric->phy);

			} else if (fabric->phy == 0xff) {

				ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",

					     path_active_desc[i].desc, path_state_desc[j].desc,

					     fabric->ioa_port, fabric->cascaded_expander);

			} else {

				ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",

					     path_active_desc[i].desc, path_state_desc[j].desc,

					     fabric->ioa_port, fabric->cascaded_expander, fabric->phy);

			}

			return;

		}

	}



	ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,

		fabric->ioa_port, fabric->cascaded_expander, fabric->phy);

}



static const struct {

	u8 type;

	char *desc;

} path_type_desc[] = {

	{ IPR_PATH_CFG_IOA_PORT, "IOA port" },

	{ IPR_PATH_CFG_EXP_PORT, "Expander port" },

	{ IPR_PATH_CFG_DEVICE_PORT, "Device port" },

	{ IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }

};



static const struct {

	u8 status;

	char *desc;

} path_status_desc[] = {

	{ IPR_PATH_CFG_NO_PROB, "Functional" },

	{ IPR_PATH_CFG_DEGRADED, "Degraded" },

	{ IPR_PATH_CFG_FAILED, "Failed" },

	{ IPR_PATH_CFG_SUSPECT, "Suspect" },

	{ IPR_PATH_NOT_DETECTED, "Missing" },

	{ IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }

};



static const char *link_rate[] = {

	"unknown",

	"disabled",

	"phy reset problem",

	"spinup hold",

	"port selector",

	"unknown",

	"unknown",

	"unknown",

	"1.5Gbps",

	"3.0Gbps",

	"unknown",

	"unknown",

	"unknown",

	"unknown",

	"unknown",

	"unknown"

};



/**

 * ipr_log_path_elem - Log a fabric path element.

 * @hostrcb:	hostrcb struct

 * @cfg:		fabric path element struct

 *

 * Return value:

 * 	none

 **/

static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,

			      struct ipr_hostrcb_config_element *cfg)

{

	int i, j;

	u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;

	u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;



	if (type == IPR_PATH_CFG_NOT_EXIST)

		return;



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

		if (path_type_desc[i].type != type)

			continue;



		for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {

			if (path_status_desc[j].status != status)

				continue;



			if (type == IPR_PATH_CFG_IOA_PORT) {

				ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",

					     path_status_desc[j].desc, path_type_desc[i].desc,

					     cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],

					     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));

			} else {

				if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {

					ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",

						     path_status_desc[j].desc, path_type_desc[i].desc,

						     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],

						     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));

				} else if (cfg->cascaded_expander == 0xff) {

					ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "

						     "WWN=%08X%08X\n", path_status_desc[j].desc,

						     path_type_desc[i].desc, cfg->phy,

						     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],

						     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));

				} else if (cfg->phy == 0xff) {

					ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "

						     "WWN=%08X%08X\n", path_status_desc[j].desc,

						     path_type_desc[i].desc, cfg->cascaded_expander,

						     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],

						     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));

				} else {

					ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "

						     "WWN=%08X%08X\n", path_status_desc[j].desc,

						     path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,

						     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],

						     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));

				}

			}

			return;

		}

	}



	ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "

		     "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,

		     link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],

		     be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));

}



/**

 * ipr_log_fabric_error - Log a fabric error.

 * @ioa_cfg:	ioa config struct

 * @hostrcb:	hostrcb struct

 *

 * Return value:

 * 	none

 **/

static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,

				 struct ipr_hostrcb *hostrcb)

{

	struct ipr_hostrcb_type_20_error *error;

	struct ipr_hostrcb_fabric_desc *fabric;

	struct ipr_hostrcb_config_element *cfg;

	int i, add_len;



	error = &hostrcb->hcam.u.error.u.type_20_error;

	error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';

	ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);



	add_len = be32_to_cpu(hostrcb->hcam.length) -

		(offsetof(struct ipr_hostrcb_error, u) +

		 offsetof(struct ipr_hostrcb_type_20_error, desc));



	for (i = 0, fabric = error->desc; i < error->num_entries; i++) {

		ipr_log_fabric_path(hostrcb, fabric);

		for_each_fabric_cfg(fabric, cfg)

			ipr_log_path_elem(hostrcb, cfg);



		add_len -= be16_to_cpu(fabric->length);

		fabric = (struct ipr_hostrcb_fabric_desc *)

			((unsigned long)fabric + be16_to_cpu(fabric->length));

	}



	ipr_log_hex_data((u32 *)fabric, add_len);

}



/**

 * ipr_log_generic_error - Log an adapter error.

 * @ioa_cfg:	ioa config struct
@@ -1394,13 +1607,7 @@ static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 
	if (!ipr_error_table[error_index].log_hcam)

		return;



	if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {

		ipr_ra_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,

			   "%s\n", ipr_error_table[error_index].error);

	} else {

		dev_err(&ioa_cfg->pdev->dev, "%s\n",

			ipr_error_table[error_index].error);

	}

	ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);



	/* Set indication we have logged an error */

	ioa_cfg->errors_logged++;
@@ -1437,6 +1644,9 @@ static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 
	case IPR_HOST_RCB_OVERLAY_ID_17:

		ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);

		break;

	case IPR_HOST_RCB_OVERLAY_ID_20:

		ipr_log_fabric_error(ioa_cfg, hostrcb);

		break;

	case IPR_HOST_RCB_OVERLAY_ID_1:

	case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:

	default:
@@ -6812,6 +7022,7 @@ static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 


		ioa_cfg->hostrcb[i]->hostrcb_dma =

			ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);

		ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;

		list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);

	}

drivers/scsi/ipr.h

+72 −0
Original line number Diff line number Diff line
@@ -737,6 +737,64 @@ struct ipr_hostrcb_type_17_error { 
	u32 data[476];

}__attribute__((packed, aligned (4)));



struct ipr_hostrcb_config_element {

	u8 type_status;

#define IPR_PATH_CFG_TYPE_MASK	0xF0

#define IPR_PATH_CFG_NOT_EXIST	0x00

#define IPR_PATH_CFG_IOA_PORT		0x10

#define IPR_PATH_CFG_EXP_PORT		0x20

#define IPR_PATH_CFG_DEVICE_PORT	0x30

#define IPR_PATH_CFG_DEVICE_LUN	0x40



#define IPR_PATH_CFG_STATUS_MASK	0x0F

#define IPR_PATH_CFG_NO_PROB		0x00

#define IPR_PATH_CFG_DEGRADED		0x01

#define IPR_PATH_CFG_FAILED		0x02

#define IPR_PATH_CFG_SUSPECT		0x03

#define IPR_PATH_NOT_DETECTED		0x04

#define IPR_PATH_INCORRECT_CONN	0x05



	u8 cascaded_expander;

	u8 phy;

	u8 link_rate;

#define IPR_PHY_LINK_RATE_MASK	0x0F



	__be32 wwid[2];

}__attribute__((packed, aligned (4)));



struct ipr_hostrcb_fabric_desc {

	__be16 length;

	u8 ioa_port;

	u8 cascaded_expander;

	u8 phy;

	u8 path_state;

#define IPR_PATH_ACTIVE_MASK		0xC0

#define IPR_PATH_NO_INFO		0x00

#define IPR_PATH_ACTIVE			0x40

#define IPR_PATH_NOT_ACTIVE		0x80



#define IPR_PATH_STATE_MASK		0x0F

#define IPR_PATH_STATE_NO_INFO	0x00

#define IPR_PATH_HEALTHY		0x01

#define IPR_PATH_DEGRADED		0x02

#define IPR_PATH_FAILED			0x03



	__be16 num_entries;

	struct ipr_hostrcb_config_element elem[1];

}__attribute__((packed, aligned (4)));



#define for_each_fabric_cfg(fabric, cfg) \

		for (cfg = (fabric)->elem; \

			cfg < ((fabric)->elem + be16_to_cpu((fabric)->num_entries)); \

			cfg++)



struct ipr_hostrcb_type_20_error {

	u8 failure_reason[64];

	u8 reserved[3];

	u8 num_entries;

	struct ipr_hostrcb_fabric_desc desc[1];

}__attribute__((packed, aligned (4)));



struct ipr_hostrcb_error {

	__be32 failing_dev_ioasc;

	struct ipr_res_addr failing_dev_res_addr;
@@ -753,6 +811,7 @@ struct ipr_hostrcb_error { 
		struct ipr_hostrcb_type_13_error type_13_error;

		struct ipr_hostrcb_type_14_error type_14_error;

		struct ipr_hostrcb_type_17_error type_17_error;

		struct ipr_hostrcb_type_20_error type_20_error;

	} u;

}__attribute__((packed, aligned (4)));
@@ -792,6 +851,7 @@ struct ipr_hcam { 
#define IPR_HOST_RCB_OVERLAY_ID_14				0x14

#define IPR_HOST_RCB_OVERLAY_ID_16				0x16

#define IPR_HOST_RCB_OVERLAY_ID_17				0x17

#define IPR_HOST_RCB_OVERLAY_ID_20				0x20

#define IPR_HOST_RCB_OVERLAY_ID_DEFAULT			0xFF



	u8 reserved1[3];
@@ -811,6 +871,7 @@ struct ipr_hostrcb { 
	struct ipr_hcam hcam;

	dma_addr_t hostrcb_dma;

	struct list_head queue;

	struct ipr_ioa_cfg *ioa_cfg;

};



/* IPR smart dump table structures */
@@ -1289,6 +1350,17 @@ struct ipr_ucode_image_header { 
	}								\

}



#define ipr_hcam_err(hostrcb, fmt, ...)					\

{													\

	if (ipr_is_device(&(hostrcb)->hcam.u.error.failing_dev_res_addr)) {		\

		ipr_ra_err((hostrcb)->ioa_cfg,							\

				(hostrcb)->hcam.u.error.failing_dev_res_addr,			\

				fmt, ##__VA_ARGS__);							\

	} else {											\

		dev_err(&(hostrcb)->ioa_cfg->pdev->dev, fmt, ##__VA_ARGS__);		\

	}												\

}



#define ipr_trace ipr_dbg("%s: %s: Line: %d\n",\

	__FILE__, __FUNCTION__, __LINE__)