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path: root/drivers/scsi/scsi_debug.c
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Diffstat (limited to 'drivers/scsi/scsi_debug.c')
-rw-r--r--drivers/scsi/scsi_debug.c108
1 files changed, 104 insertions, 4 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 39118418ca16..2f60ab9a93bd 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -188,6 +188,7 @@ static const char *sdebug_version_date = "20210520";
#define TAPE_EW 20
#define TAPE_MAX_PARTITIONS 2
#define TAPE_UNITS 10000
+#define TAPE_PARTITION_1_UNITS 1000
/* The tape block data definitions */
#define TAPE_BLOCK_FM_FLAG ((u32)0x1 << 30)
@@ -405,6 +406,9 @@ struct sdebug_dev_info {
unsigned int tape_density;
unsigned char tape_partition;
unsigned char tape_nbr_partitions;
+ unsigned char tape_pending_nbr_partitions;
+ unsigned int tape_pending_part_0_size;
+ unsigned int tape_pending_part_1_size;
unsigned char tape_dce;
unsigned int tape_location[TAPE_MAX_PARTITIONS];
unsigned int tape_eop[TAPE_MAX_PARTITIONS];
@@ -534,14 +538,15 @@ enum sdeb_opcode_index {
SDEB_I_LOCATE = 34,
SDEB_I_WRITE_FILEMARKS = 35,
SDEB_I_SPACE = 36,
- SDEB_I_LAST_ELEM_P1 = 37, /* keep this last (previous + 1) */
+ SDEB_I_FORMAT_MEDIUM = 37,
+ SDEB_I_LAST_ELEM_P1 = 38, /* keep this last (previous + 1) */
};
static const unsigned char opcode_ind_arr[256] = {
/* 0x0; 0x0->0x1f: 6 byte cdbs */
SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE,
- 0, SDEB_I_READ_BLOCK_LIMITS, 0, 0,
+ SDEB_I_FORMAT_MEDIUM, SDEB_I_READ_BLOCK_LIMITS, 0, 0,
SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0,
SDEB_I_WRITE_FILEMARKS, SDEB_I_SPACE, SDEB_I_INQUIRY, 0, 0,
SDEB_I_MODE_SELECT, SDEB_I_RESERVE, SDEB_I_RELEASE,
@@ -629,6 +634,7 @@ static int resp_locate(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_write_filemarks(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_space(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_rewind(struct scsi_cmnd *, struct sdebug_dev_info *);
+static int resp_format_medium(struct scsi_cmnd *, struct sdebug_dev_info *);
static int sdebug_do_add_host(bool mk_new_store);
static int sdebug_add_host_helper(int per_host_idx);
@@ -867,7 +873,7 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEM_P1 + 1] = {
resp_report_zones, zone_in_iarr, /* ZONE_IN(16), REPORT ZONES) */
{16, 0x0 /* SA */, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbf, 0xc7} },
-/* 31 */
+/* 32 */
{0, 0x0, 0x0, F_D_OUT | FF_MEDIA_IO,
resp_atomic_write, NULL, /* ATOMIC WRITE 16 */
{16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
@@ -881,7 +887,9 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEM_P1 + 1] = {
{6, 0x01, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x11, 0, F_D_IN, resp_space, NULL, /* SPACE (6) */
{6, 0x07, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
-
+ {0, 0x4, 0, 0, resp_format_medium, NULL, /* FORMAT MEDIUM (6) */
+ {6, 0x3, 0x7, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
+/* 38 */
/* sentinel */
{0xff, 0, 0, 0, NULL, NULL, /* terminating element */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
@@ -2844,6 +2852,51 @@ static int resp_partition_m_pg(unsigned char *p, int pcontrol, int target)
return sizeof(partition_pg);
}
+static int process_medium_part_m_pg(struct sdebug_dev_info *devip,
+ unsigned char *new, int pg_len)
+{
+ int new_nbr, p0_size, p1_size;
+
+ if ((new[4] & 0x80) != 0) { /* FDP */
+ partition_pg[4] |= 0x80;
+ devip->tape_pending_nbr_partitions = TAPE_MAX_PARTITIONS;
+ devip->tape_pending_part_0_size = TAPE_UNITS - TAPE_PARTITION_1_UNITS;
+ devip->tape_pending_part_1_size = TAPE_PARTITION_1_UNITS;
+ } else {
+ new_nbr = new[3] + 1;
+ if (new_nbr > TAPE_MAX_PARTITIONS)
+ return 3;
+ if ((new[4] & 0x40) != 0) { /* SDP */
+ p1_size = TAPE_PARTITION_1_UNITS;
+ p0_size = TAPE_UNITS - p1_size;
+ if (p0_size < 100)
+ return 4;
+ } else if ((new[4] & 0x20) != 0) {
+ if (new_nbr > 1) {
+ p0_size = get_unaligned_be16(new + 8);
+ p1_size = get_unaligned_be16(new + 10);
+ if (p1_size == 0xFFFF)
+ p1_size = TAPE_UNITS - p0_size;
+ else if (p0_size == 0xFFFF)
+ p0_size = TAPE_UNITS - p1_size;
+ if (p0_size < 100 || p1_size < 100)
+ return 8;
+ } else {
+ p0_size = TAPE_UNITS;
+ p1_size = 0;
+ }
+ } else
+ return 6;
+ devip->tape_pending_nbr_partitions = new_nbr;
+ devip->tape_pending_part_0_size = p0_size;
+ devip->tape_pending_part_1_size = p1_size;
+ partition_pg[3] = new_nbr;
+ devip->tape_pending_nbr_partitions = new_nbr;
+ }
+
+ return 0;
+}
+
static int resp_compression_m_pg(unsigned char *p, int pcontrol, int target,
unsigned char dce)
{ /* Compression page for mode_sense (tape) */
@@ -3172,6 +3225,17 @@ static int resp_mode_select(struct scsi_cmnd *scp,
return 0;
}
break;
+ case 0x11: /* Medium Partition Mode Page (tape) */
+ if (sdebug_ptype == TYPE_TAPE) {
+ int fld;
+
+ fld = process_medium_part_m_pg(devip, &arr[off], pg_len);
+ if (fld == 0)
+ return 0;
+ mk_sense_invalid_fld(scp, SDEB_IN_DATA, fld, -1);
+ return check_condition_result;
+ }
+ break;
case 0x1c: /* Informational Exceptions Mode page */
if (iec_m_pg[1] == arr[off + 1]) {
memcpy(iec_m_pg + 2, arr + off + 2,
@@ -3556,6 +3620,39 @@ static int partition_tape(struct sdebug_dev_info *devip, int nbr_partitions,
return nbr_partitions;
}
+static int resp_format_medium(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
+{
+ int res = 0;
+ unsigned char *cmd = scp->cmnd;
+
+ if (sdebug_ptype != TYPE_TAPE) {
+ mk_sense_invalid_fld(scp, SDEB_IN_CDB, 0, -1);
+ return check_condition_result;
+ }
+ if (cmd[2] > 2) {
+ mk_sense_invalid_fld(scp, SDEB_IN_DATA, 2, -1);
+ return check_condition_result;
+ }
+ if (cmd[2] != 0) {
+ if (devip->tape_pending_nbr_partitions > 0) {
+ res = partition_tape(devip,
+ devip->tape_pending_nbr_partitions,
+ devip->tape_pending_part_0_size,
+ devip->tape_pending_part_1_size);
+ } else
+ res = partition_tape(devip, devip->tape_nbr_partitions,
+ devip->tape_eop[0], devip->tape_eop[1]);
+ } else
+ res = partition_tape(devip, 1, TAPE_UNITS, 0);
+ if (res < 0)
+ return -EINVAL;
+
+ devip->tape_pending_nbr_partitions = -1;
+
+ return 0;
+}
+
static inline bool sdebug_dev_is_zoned(struct sdebug_dev_info *devip)
{
return devip->nr_zones != 0;
@@ -6522,6 +6619,7 @@ static int scsi_debug_sdev_configure(struct scsi_device *sdp,
if (!devip->tape_blocks[0])
return 1;
}
+ devip->tape_pending_nbr_partitions = -1;
if (partition_tape(devip, 1, TAPE_UNITS, 0) < 0) {
kfree(devip->tape_blocks[0]);
devip->tape_blocks[0] = NULL;
@@ -6783,6 +6881,8 @@ static void scsi_tape_reset_clear(struct sdebug_dev_info *devip)
devip->tape_dce = 0;
for (i = 0; i < TAPE_MAX_PARTITIONS; i++)
devip->tape_location[i] = 0;
+ devip->tape_pending_nbr_partitions = -1;
+ /* Don't reset partitioning? */
}
}
generated by cgit (git 2.34.1) at 2025-05-10 05:02:32 +0000