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scsi: pm80xx: Modified the logic to collect IOP event logs 

Added the logic for collecting IOP log respective to event log size.

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Deepak Ukey 2019-06-24 13:52:28 +05:30 committed by Martin K. Petersen
parent 2040a857e4
commit 5f0bd875c6
1 changed files with 17 additions and 16 deletions
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33
drivers/scsi/pm8001/pm8001_ctl.c
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@ -492,25 +492,26 @@ static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
struct Scsi_Host *shost = class_to_shost(cdev);
struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
#define IOP_MEMMAP(r, c) \
(*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
+ (c)))
int i;
char *str = buf;
int max = 2;
for (i = 0; i < max; i++) {
str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
"0x%08x 0x%08x\n",
IOP_MEMMAP(i, 0),
IOP_MEMMAP(i, 4),
IOP_MEMMAP(i, 8),
IOP_MEMMAP(i, 12),
IOP_MEMMAP(i, 16),
IOP_MEMMAP(i, 20),
IOP_MEMMAP(i, 24),
IOP_MEMMAP(i, 28));
u32 read_size =
pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
static u32 start, end, count;
u32 max_read_times = 32;
u32 max_count = (read_size * 1024) / (max_read_times * 4);
u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
if ((count % max_count) == 0) {
start = 0;
end = max_read_times;
count = 0;
} else {
start = end;
end = end + max_read_times;
}
for (; start < end; start++)
str += sprintf(str, "%08x ", *(temp+start));
count++;
return str - buf;
}
static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);