[SCSI] ipr: Format HCAM overlay ID 0x21

This patch adds formatting error overlay 0x21 to improve debug capabilities.

[jejb: checkpatch fixes]
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

2 files changed, 53 insertions, 0 deletions

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 3d7b6af98e5e..1c6a18a39e85 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -2368,6 +2368,42 @@ static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
 }
 
 /**
+ * ipr_log_sis64_device_error - Log a cache error.
+ * @ioa_cfg:    ioa config struct
+ * @hostrcb:    hostrcb struct
+ *
+ * Return value:
+ *      none
+ **/
+static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
+                                         struct ipr_hostrcb *hostrcb)
+{
+        struct ipr_hostrcb_type_21_error *error;
+        char buffer[IPR_MAX_RES_PATH_LENGTH];
+
+        error = &hostrcb->hcam.u.error64.u.type_21_error;
+
+        ipr_err("-----Failing Device Information-----\n");
+        ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
+                be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
+                 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
+        ipr_err("Device Resource Path: %s\n",
+                __ipr_format_res_path(error->res_path,
+                                      buffer, sizeof(buffer)));
+        error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
+        error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
+        ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
+        ipr_err("Secondary Problem Description:  %s\n", error->second_problem_desc);
+        ipr_err("SCSI Sense Data:\n");
+        ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
+        ipr_err("SCSI Command Descriptor Block: \n");
+        ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
+
+        ipr_err("Additional IOA Data:\n");
+        ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
+}
+
+/**
  * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
  * @ioasc:      IOASC
  *
@@ -2468,6 +2504,9 @@ static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
         case IPR_HOST_RCB_OVERLAY_ID_20:
                 ipr_log_fabric_error(ioa_cfg, hostrcb);
                 break;
+        case IPR_HOST_RCB_OVERLAY_ID_21:
+                ipr_log_sis64_device_error(ioa_cfg, hostrcb);
+                break;
         case IPR_HOST_RCB_OVERLAY_ID_23:
                 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
                 break;
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 649d8f697147..c343afef4e19 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -899,6 +899,18 @@ struct ipr_hostrcb_type_01_error {
         __be32 ioa_data[236];
 }__attribute__((packed, aligned (4)));
 
+struct ipr_hostrcb_type_21_error {
+        __be32 wwn[4];
+        u8 res_path[8];
+        u8 primary_problem_desc[32];
+        u8 second_problem_desc[32];
+        __be32 sense_data[8];
+        __be32 cdb[4];
+        __be32 residual_trans_length;
+        __be32 length_of_error;
+        __be32 ioa_data[236];
+}__attribute__((packed, aligned (4)));
+
 struct ipr_hostrcb_type_02_error {
         struct ipr_vpd ioa_vpd;
         struct ipr_vpd cfc_vpd;
@@ -1128,6 +1140,7 @@ struct ipr_hostrcb64_error {
                 struct ipr_hostrcb_type_ff_error type_ff_error;
                 struct ipr_hostrcb_type_12_error type_12_error;
                 struct ipr_hostrcb_type_17_error type_17_error;
+                struct ipr_hostrcb_type_21_error type_21_error;
                 struct ipr_hostrcb_type_23_error type_23_error;
                 struct ipr_hostrcb_type_24_error type_24_error;
                 struct ipr_hostrcb_type_30_error type_30_error;
@@ -1171,6 +1184,7 @@ struct ipr_hcam {
 #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_21                              0x21
 #define IPR_HOST_RCB_OVERLAY_ID_23                              0x23
 #define IPR_HOST_RCB_OVERLAY_ID_24                              0x24
 #define IPR_HOST_RCB_OVERLAY_ID_26                              0x26