[PATCH V2 13/15] aacraid: Save adapter fib log before an IOP reset

Raghava Aditya Renukunta
2017-02-17T03:28:23Z

Currently the adapter firmware does not save outstanding I/O's log
information when an IOP reset is triggered. This is problematic when
trying to root cause and debug issues.

Fixed by adding sync command to trigger I/O log file save in the adapter
firmware before issuing an IOP reset.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>

---
Changes in V2:
None

drivers/scsi/aacraid/aachba.c | 4 ++++
drivers/scsi/aacraid/aacraid.h | 6 ++++++
drivers/scsi/aacraid/src.c | 17 +++++++++++++++++
3 files changed, 27 insertions(+)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 3ede50f..e3e93de 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -294,6 +294,10 @@ MODULE_PARM_DESC(aif_timeout, "The duration of time in seconds to wait for"
"deregistering them. This is typically adjusted for heavily burdened"
" systems.");

+int aac_fib_dump;
+module_param(aac_fib_dump, int, 0644);
+MODULE_PARM_DESC(aac_fib_dump, "Dump controller fibs prior to IOP_RESET 0=off, 1=on");
+
int numacb = -1;
module_param(numacb, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(numacb, "Request a limit to the number of adapter control"
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 9281e72..622fd69 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1444,6 +1444,10 @@ struct aac_supplement_adapter_info
#define AAC_OPTION_VARIABLE_BLOCK_SIZE cpu_to_le32(0x00040000)
/* 240 simple volume support */
#define AAC_OPTION_SUPPORTED_240_VOLUMES cpu_to_le32(0x10000000)
+/*
+ * Supports FIB dump sync command send prior to IOP_RESET
+ */
+#define AAC_OPTION_SUPPORTED3_IOP_RESET_FIB_DUMP cpu_to_le32(0x00004000)
#define AAC_SIS_VERSION_V3 3
#define AAC_SIS_SLOT_UNKNOWN 0xFF

@@ -2483,6 +2487,7 @@ struct aac_hba_info {
#define GET_DRIVER_BUFFER_PROPERTIES 0x00000023
#define RCV_TEMP_READINGS 0x00000025
#define GET_COMM_PREFERRED_SETTINGS 0x00000026
+#define IOP_RESET_FW_FIB_DUMP 0x00000034
#define IOP_RESET 0x00001000
#define IOP_RESET_ALWAYS 0x00001001
#define RE_INIT_ADAPTER 0x000000ee
@@ -2686,4 +2691,5 @@ extern int aac_commit;
extern int update_interval;
extern int check_interval;
extern int aac_check_reset;
+extern int aac_fib_dump;
#endif
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 71aaabd..2e5338d 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -679,10 +679,27 @@ void aac_set_intx_mode(struct aac_dev *dev)
}
}

+static void aac_dump_fw_fib_iop_reset(struct aac_dev *dev)
+{
+ __le32 supported_options3;
+
+ if (!aac_fib_dump)
+ return;
+
+ supported_options3 = dev->supplement_adapter_info.supported_options3;
+ if (!(supported_options3 & AAC_OPTION_SUPPORTED3_IOP_RESET_FIB_DUMP))
+ return;
+
+ aac_adapter_sync_cmd(dev, IOP_RESET_FW_FIB_DUMP,
+ 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
+}
+
static void aac_send_iop_reset(struct aac_dev *dev, int bled)
{
u32 var, reset_mask;

+ aac_dump_fw_fib_iop_reset(dev);
+
bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
0, 0, 0, 0, 0, 0, &var,
&reset_mask, NULL, NULL, NULL);
--
2.7.4