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

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

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 75669251fb6..44b15e4b6ed 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -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__)