aacraid: Log firmware AIF messages

Firmware AIF messages about cache loss and data recovery are being missed
by the driver since currently they are not captured but rather let go.
This patch to capture those messages and log them for the user.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

4 files changed, 35 insertions, 1 deletions

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 1936e0813f13..b70f3eb323f7 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -2065,6 +2065,10 @@ extern struct aac_common aac_config;
 #define                 AifEnAddJBOD            30      /* JBOD created */
 #define                 AifEnDeleteJBOD         31      /* JBOD deleted */
 
+#define                 AifBuManagerEvent               42 /* Bu management*/
+#define                 AifBuCacheDataLoss              10
+#define                 AifBuCacheDataRecover   11
+
 #define         AifCmdJobProgress       2       /* Progress report */
 #define                 AifJobCtrZero   101     /* Array Zero progress */
 #define                 AifJobStsSuccess 1      /* Job completes */
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index bb7988d53216..0aeecec1f5ea 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -901,6 +901,31 @@ void aac_printf(struct aac_dev *dev, u32 val)
         memset(cp, 0, 256);
 }
 
+static inline int aac_aif_data(struct aac_aifcmd *aifcmd, uint32_t index)
+{
+        return le32_to_cpu(((__le32 *)aifcmd->data)[index]);
+}
+
+
+static void aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd)
+{
+        switch (aac_aif_data(aifcmd, 1)) {
+        case AifBuCacheDataLoss:
+                if (aac_aif_data(aifcmd, 2))
+                        dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n",
+                        aac_aif_data(aifcmd, 2));
+                else
+                        dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n");
+                break;
+        case AifBuCacheDataRecover:
+                if (aac_aif_data(aifcmd, 2))
+                        dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n",
+                        aac_aif_data(aifcmd, 2));
+                else
+                        dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n");
+                break;
+        }
+}
 
 /**
  *      aac_handle_aif          -       Handle a message from the firmware
@@ -1154,6 +1179,8 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                                   ADD : DELETE;
                                 break;
                         }
+                        case AifBuManagerEvent:
+                                aac_handle_aif_bu(dev, aifcmd);
                         break;
                 }
 
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 79a1cec1a51f..a943bd230bc2 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1299,6 +1299,8 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
         else
                 shost->this_id = shost->max_id;
 
+        aac_intr_normal(aac, 0, 2, 0, NULL);
+
         /*
          * dmb - we may need to move the setting of these parms somewhere else once
          * we get a fib that can report the actual numbers
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index bc0203f3d243..28f8b8a1b8a4 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -135,7 +135,8 @@ static irqreturn_t aac_src_intr_message(int irq, void *dev_id)
 
         if (mode & AAC_INT_MODE_AIF) {
                 /* handle AIF */
-                aac_intr_normal(dev, 0, 2, 0, NULL);
+                if (dev->aif_thread && dev->fsa_dev)
+                        aac_intr_normal(dev, 0, 2, 0, NULL);
                 if (dev->msi_enabled)
                         aac_src_access_devreg(dev, AAC_CLEAR_AIF_BIT);
                 mode = 0;