Commit 0790797a authored by Douglas Gilbert's avatar Douglas Gilbert Committed by Martin K. Petersen
Browse files

scsi: scsi_debug: Add environmental reporting log subpage 

Log subpages are starting to appear in real devices (e.g. SSDs) so add
support for one. Adopt approach where all "wild" sub-pages are themselves
listed as long as there is at least one non-wild page or subpage for a
given page number.

Link: https://lore.kernel.org/r/20220109012853.301953-10-dgilbert@interlog.com


Signed-off-by: default avatarDouglas Gilbert <dgilbert@interlog.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 7109f370

drivers/scsi/scsi_debug.c

+33 −0
Original line number Diff line number Diff line
@@ -2594,6 +2594,18 @@ static int resp_ie_l_pg(unsigned char *arr) 
	return sizeof(ie_l_pg);

}



static int resp_env_rep_l_spg(unsigned char *arr)

{

	unsigned char env_rep_l_spg[] = {0x0, 0x0, 0x23, 0x8,

					 0x0, 40, 72, 0xff, 45, 18, 0, 0,

					 0x1, 0x0, 0x23, 0x8,

					 0x0, 55, 72, 35, 55, 45, 0, 0,

		};



	memcpy(arr, env_rep_l_spg, sizeof(env_rep_l_spg));

	return sizeof(env_rep_l_spg);

}



#define SDEBUG_MAX_LSENSE_SZ 512



static int resp_log_sense(struct scsi_cmnd *scp,
@@ -2646,26 +2658,47 @@ static int resp_log_sense(struct scsi_cmnd *scp, 
			arr[n++] = 0xff;	/* this page */

			arr[n++] = 0xd;

			arr[n++] = 0x0;		/* Temperature */

			arr[n++] = 0xd;

			arr[n++] = 0x1;		/* Environment reporting */

			arr[n++] = 0xd;

			arr[n++] = 0xff;	/* all 0xd subpages */

			arr[n++] = 0x2f;

			arr[n++] = 0x0;	/* Informational exceptions */

			arr[n++] = 0x2f;

			arr[n++] = 0xff;	/* all 0x2f subpages */

			arr[3] = n - 4;

			break;

		case 0xd:	/* Temperature subpages */

			n = 4;

			arr[n++] = 0xd;

			arr[n++] = 0x0;		/* Temperature */

			arr[n++] = 0xd;

			arr[n++] = 0x1;		/* Environment reporting */

			arr[n++] = 0xd;

			arr[n++] = 0xff;	/* these subpages */

			arr[3] = n - 4;

			break;

		case 0x2f:	/* Informational exceptions subpages */

			n = 4;

			arr[n++] = 0x2f;

			arr[n++] = 0x0;		/* Informational exceptions */

			arr[n++] = 0x2f;

			arr[n++] = 0xff;	/* these subpages */

			arr[3] = n - 4;

			break;

		default:

			mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5);

			return check_condition_result;

		}

	} else if (subpcode > 0) {

		arr[0] |= 0x40;

		arr[1] = subpcode;

		if (pcode == 0xd && subpcode == 1)

			arr[3] = resp_env_rep_l_spg(arr + 4);

		else {

			mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5);

			return check_condition_result;

		}

	} else {

		mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1);

		return check_condition_result;