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Commit 5f0bd875 authored by Deepak Ukey's avatar Deepak Ukey Committed by Martin K. Petersen
Browse files

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: default avatarDeepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: default avatarViswas G <Viswas.G@microchip.com>
Reviewed-by: default avatarJack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 2040a857

drivers/scsi/pm8001/pm8001_ctl.c

+17 −16
Original line number Diff line number Diff line
@@ -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);