ipr.c

linux 内核源代码

	if (len == 0)
		return;

	if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
		len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);

	for (i = 0; i < len / 4; i += 4) {
		ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
			be32_to_cpu(data[i]),
			be32_to_cpu(data[i+1]),
			be32_to_cpu(data[i+2]),
			be32_to_cpu(data[i+3]));
	}
}

/**
 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
 * @ioa_cfg:	ioa config struct
 * @hostrcb:	hostrcb struct
 *
 * Return value:
 * 	none
 **/
static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
					    struct ipr_hostrcb *hostrcb)
{
	struct ipr_hostrcb_type_17_error *error;

	error = &hostrcb->hcam.u.error.u.type_17_error;
	error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
	strstrip(error->failure_reason);

	ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
		     be32_to_cpu(hostrcb->hcam.u.error.prc));
	ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
	ipr_log_hex_data(ioa_cfg, error->data,
			 be32_to_cpu(hostrcb->hcam.length) -
			 (offsetof(struct ipr_hostrcb_error, u) +
			  offsetof(struct ipr_hostrcb_type_17_error, data)));
}

/**
 * ipr_log_dual_ioa_error - Log a dual adapter error.
 * @ioa_cfg:	ioa config struct
 * @hostrcb:	hostrcb struct
 *
 * Return value:
 * 	none
 **/
static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
				   struct ipr_hostrcb *hostrcb)
{
	struct ipr_hostrcb_type_07_error *error;

	error = &hostrcb->hcam.u.error.u.type_07_error;
	error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
	strstrip(error->failure_reason);

	ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
		     be32_to_cpu(hostrcb->hcam.u.error.prc));
	ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
	ipr_log_hex_data(ioa_cfg, error->data,
			 be32_to_cpu(hostrcb->hcam.length) -
			 (offsetof(struct ipr_hostrcb_error, u) +
			  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(ioa_cfg, (u32 *)fabric, add_len);
}

/**
 * ipr_log_generic_error - Log an adapter error.
 * @ioa_cfg:	ioa config struct
 * @hostrcb:	hostrcb struct
 *
 * Return value:
 * 	none
 **/
static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
				  struct ipr_hostrcb *hostrcb)
{
	ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
			 be32_to_cpu(hostrcb->hcam.length));
}

/**
 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
 * @ioasc:	IOASC
 *
 * This function will return the index of into the ipr_error_table
 * for the specified IOASC. If the IOASC is not in the table,
 * 0 will be returned, which points to the entry used for unknown errors.
 *
 * Return value:
 * 	index into the ipr_error_table
 **/
static u32 ipr_get_error(u32 ioasc)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
		if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
			return i;

	return 0;
}

/**
 * ipr_handle_log_data - Log an adapter error.
 * @ioa_cfg:	ioa config struct
 * @hostrcb:	hostrcb struct
 *
 * This function logs an adapter error to the system.
 *
 * Return value:
 * 	none
 **/
static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
				struct ipr_hostrcb *hostrcb)
{
	u32 ioasc;
	int error_index;

	if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
		return;

	if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
		dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");

	ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);

	if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
	    ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
		/* Tell the midlayer we had a bus reset so it will handle the UA properly */
		scsi_report_bus_reset(ioa_cfg->host,
				      hostrcb->hcam.u.error.failing_dev_res_addr.bus);
	}

	error_index = ipr_get_error(ioasc);

	if (!ipr_error_table[error_index].log_hcam)
		return;

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

	/* Set indication we have logged an error */
	ioa_cfg->errors_logged++;

	if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
		return;
	if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
		hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));

	switch (hostrcb->hcam.overlay_id) {
	case IPR_HOST_RCB_OVERLAY_ID_2:
		ipr_log_cache_error(ioa_cfg, hostrcb);
		break;
	case IPR_HOST_RCB_OVERLAY_ID_3:
		ipr_log_config_error(ioa_cfg, hostrcb);
		break;
	case IPR_HOST_RCB_OVERLAY_ID_4:
	case IPR_HOST_RCB_OVERLAY_ID_6:
		ipr_log_array_error(ioa_cfg, hostrcb);
		break;
	case IPR_HOST_RCB_OVERLAY_ID_7:
		ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
		break;
	case IPR_HOST_RCB_OVERLAY_ID_12:
		ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
		break;
	case IPR_HOST_RCB_OVERLAY_ID_13:
		ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
		break;
	case IPR_HOST_RCB_OVERLAY_ID_14:
	case IPR_HOST_RCB_OVERLAY_ID_16:
		ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
		break;
	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:
		ipr_log_generic_error(ioa_cfg, hostrcb);
		break;
	}
}

/**
 * ipr_process_error - Op done function for an adapter error log.
 * @ipr_cmd:	ipr command struct
 *
 * This function is the op done function for an error log host
 * controlled async from the adapter. It will log the error and
 * send the HCAM back to the adapter.
 *
 * Return value:
 * 	none
 **/
static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
{
	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
	struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
	u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);

	list_del(&hostrcb->queue);
	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);

	if (!ioasc) {
		ipr_handle_log_data(ioa_cfg, hostrcb);
		if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
			ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
	} else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
		dev_err(&ioa_cfg->pdev->dev,
			"Host RCB failed with IOASC: 0x%08X\n", ioasc);
	}

	ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
}