[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 75669251fb63..44b15e4b6edf 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__)