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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.c240
1 files changed, 235 insertions, 5 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 35a14f93c585..790d0fe65235 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -532,7 +532,8 @@ enum sdeb_opcode_index {
SDEB_I_READ_BLOCK_LIMITS = 33,
SDEB_I_LOCATE = 34,
SDEB_I_WRITE_FILEMARKS = 35,
- SDEB_I_LAST_ELEM_P1 = 36, /* keep this last (previous + 1) */
+ SDEB_I_SPACE = 36,
+ SDEB_I_LAST_ELEM_P1 = 37, /* keep this last (previous + 1) */
};
@@ -541,7 +542,7 @@ static const unsigned char opcode_ind_arr[256] = {
SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE,
0, SDEB_I_READ_BLOCK_LIMITS, 0, 0,
SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0,
- SDEB_I_WRITE_FILEMARKS, 0, SDEB_I_INQUIRY, 0, 0,
+ SDEB_I_WRITE_FILEMARKS, SDEB_I_SPACE, SDEB_I_INQUIRY, 0, 0,
SDEB_I_MODE_SELECT, SDEB_I_RESERVE, SDEB_I_RELEASE,
0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG,
SDEB_I_ALLOW_REMOVAL, 0,
@@ -625,6 +626,7 @@ static int resp_rwp_zone(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_read_blklimits(struct scsi_cmnd *, struct sdebug_dev_info *);
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 sdebug_do_add_host(bool mk_new_store);
@@ -872,10 +874,12 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEM_P1 + 1] = {
{0, 0x05, 0, F_D_IN, resp_read_blklimits, NULL, /* READ BLOCK LIMITS (6) */
{6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x2b, 0, F_D_UNKN, resp_locate, NULL, /* LOCATE (10) */
- {10, 0x2, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0,
+ {10, 0x07, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
{0, 0x10, 0, F_D_IN, resp_write_filemarks, NULL, /* WRITE FILEMARKS (6) */
{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} },
/* sentinel */
{0xff, 0, 0, 0, NULL, NULL, /* terminating element */
@@ -3309,6 +3313,9 @@ static int resp_locate(struct scsi_cmnd *scp,
struct sdebug_dev_info *devip)
{
unsigned char *cmd = scp->cmnd;
+ unsigned int i, pos;
+ struct tape_block *blp;
+ int partition;
if ((cmd[1] & 0x02) != 0) {
if (cmd[8] >= devip->tape_nbr_partitions) {
@@ -3317,8 +3324,19 @@ static int resp_locate(struct scsi_cmnd *scp,
}
devip->tape_partition = cmd[8];
}
- devip->tape_location[devip->tape_partition] =
- get_unaligned_be32(cmd + 3);
+ pos = get_unaligned_be32(cmd + 3);
+ partition = devip->tape_partition;
+
+ for (i = 0, blp = devip->tape_blocks[partition];
+ i < pos && i < devip->tape_eop[partition]; i++, blp++)
+ if (IS_TAPE_BLOCK_EOD(blp->fl_size))
+ break;
+ if (i < pos) {
+ devip->tape_location[partition] = i;
+ mk_sense_buffer(scp, BLANK_CHECK, 0x05, 0);
+ return check_condition_result;
+ }
+ devip->tape_location[partition] = pos;
return 0;
}
@@ -3353,6 +3371,123 @@ static int resp_write_filemarks(struct scsi_cmnd *scp,
return 0;
}
+static int resp_space(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
+{
+ unsigned char *cmd = scp->cmnd, code;
+ int i = 0, pos, count;
+ struct tape_block *blp;
+ int partition = devip->tape_partition;
+
+ count = get_unaligned_be24(cmd + 2);
+ if ((count & 0x800000) != 0) /* extend negative to 32-bit count */
+ count |= 0xff000000;
+ code = cmd[1] & 0x0f;
+
+ pos = devip->tape_location[partition];
+ if (code == 0) { /* blocks */
+ if (count < 0) {
+ count = (-count);
+ pos -= 1;
+ for (i = 0, blp = devip->tape_blocks[partition] + pos; i < count;
+ i++) {
+ if (pos < 0)
+ goto is_bop;
+ else if (IS_TAPE_BLOCK_FM(blp->fl_size))
+ goto is_fm;
+ if (i > 0) {
+ pos--;
+ blp--;
+ }
+ }
+ } else if (count > 0) {
+ for (i = 0, blp = devip->tape_blocks[partition] + pos; i < count;
+ i++, pos++, blp++) {
+ if (IS_TAPE_BLOCK_EOD(blp->fl_size))
+ goto is_eod;
+ if (IS_TAPE_BLOCK_FM(blp->fl_size)) {
+ pos += 1;
+ goto is_fm;
+ }
+ if (pos >= devip->tape_eop[partition])
+ goto is_eop;
+ }
+ }
+ } else if (code == 1) { /* filemarks */
+ if (count < 0) {
+ count = (-count);
+ if (pos == 0)
+ goto is_bop;
+ else {
+ for (i = 0, blp = devip->tape_blocks[partition] + pos;
+ i < count && pos >= 0; i++, pos--, blp--) {
+ for (pos--, blp-- ; !IS_TAPE_BLOCK_FM(blp->fl_size) &&
+ pos >= 0; pos--, blp--)
+ ; /* empty */
+ if (pos < 0)
+ goto is_bop;
+ }
+ }
+ pos += 1;
+ } else if (count > 0) {
+ for (i = 0, blp = devip->tape_blocks[partition] + pos;
+ i < count; i++, pos++, blp++) {
+ for ( ; !IS_TAPE_BLOCK_FM(blp->fl_size) &&
+ !IS_TAPE_BLOCK_EOD(blp->fl_size) &&
+ pos < devip->tape_eop[partition];
+ pos++, blp++)
+ ; /* empty */
+ if (IS_TAPE_BLOCK_EOD(blp->fl_size))
+ goto is_eod;
+ if (pos >= devip->tape_eop[partition])
+ goto is_eop;
+ }
+ }
+ } else if (code == 3) { /* EOD */
+ for (blp = devip->tape_blocks[partition] + pos;
+ !IS_TAPE_BLOCK_EOD(blp->fl_size) && pos < devip->tape_eop[partition];
+ pos++, blp++)
+ ; /* empty */
+ if (pos >= devip->tape_eop[partition])
+ goto is_eop;
+ } else {
+ /* sequential filemarks not supported */
+ mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, -1);
+ return check_condition_result;
+ }
+ devip->tape_location[partition] = pos;
+ return 0;
+
+is_fm:
+ devip->tape_location[partition] = pos;
+ mk_sense_info_tape(scp, NO_SENSE, NO_ADDITIONAL_SENSE,
+ FILEMARK_DETECTED_ASCQ, count - i,
+ SENSE_FLAG_FILEMARK);
+ return check_condition_result;
+
+is_eod:
+ devip->tape_location[partition] = pos;
+ mk_sense_info_tape(scp, BLANK_CHECK, NO_ADDITIONAL_SENSE,
+ EOD_DETECTED_ASCQ, count - i,
+ 0);
+ return check_condition_result;
+
+is_bop:
+ devip->tape_location[partition] = 0;
+ mk_sense_info_tape(scp, NO_SENSE, NO_ADDITIONAL_SENSE,
+ BEGINNING_OF_P_M_DETECTED_ASCQ, count - i,
+ SENSE_FLAG_EOM);
+ devip->tape_location[partition] = 0;
+ return check_condition_result;
+
+is_eop:
+ devip->tape_location[partition] = devip->tape_eop[partition] - 1;
+ mk_sense_info_tape(scp, MEDIUM_ERROR, NO_ADDITIONAL_SENSE,
+ EOP_EOM_DETECTED_ASCQ, (unsigned int)i,
+ SENSE_FLAG_EOM);
+ return check_condition_result;
+}
+
static int resp_rewind(struct scsi_cmnd *scp,
struct sdebug_dev_info *devip)
{
@@ -4121,6 +4256,98 @@ static int prot_verify_read(struct scsi_cmnd *scp, sector_t start_sec,
return ret;
}
+static int resp_read_tape(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+{
+ u32 i, num, transfer, size;
+ u8 *cmd = scp->cmnd;
+ struct scsi_data_buffer *sdb = &scp->sdb;
+ int partition = devip->tape_partition;
+ u32 pos = devip->tape_location[partition];
+ struct tape_block *blp;
+ bool fixed, sili;
+
+ if (cmd[0] != READ_6) { /* Only Read(6) supported */
+ mk_sense_invalid_opcode(scp);
+ return illegal_condition_result;
+ }
+ fixed = (cmd[1] & 0x1) != 0;
+ sili = (cmd[1] & 0x2) != 0;
+ if (fixed && sili) {
+ mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1);
+ return check_condition_result;
+ }
+
+ transfer = get_unaligned_be24(cmd + 2);
+ if (fixed) {
+ num = transfer;
+ size = devip->tape_blksize;
+ } else {
+ if (transfer < TAPE_MIN_BLKSIZE ||
+ transfer > TAPE_MAX_BLKSIZE) {
+ mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1);
+ return check_condition_result;
+ }
+ num = 1;
+ size = transfer;
+ }
+
+ for (i = 0, blp = devip->tape_blocks[partition] + pos;
+ i < num && pos < devip->tape_eop[partition];
+ i++, pos++, blp++) {
+ devip->tape_location[partition] = pos + 1;
+ if (IS_TAPE_BLOCK_FM(blp->fl_size)) {
+ mk_sense_info_tape(scp, NO_SENSE, NO_ADDITIONAL_SENSE,
+ FILEMARK_DETECTED_ASCQ, fixed ? num - i : size,
+ SENSE_FLAG_FILEMARK);
+ scsi_set_resid(scp, (num - i) * size);
+ return check_condition_result;
+ }
+ /* Assume no REW */
+ if (IS_TAPE_BLOCK_EOD(blp->fl_size)) {
+ mk_sense_info_tape(scp, BLANK_CHECK, NO_ADDITIONAL_SENSE,
+ EOD_DETECTED_ASCQ, fixed ? num - i : size,
+ 0);
+ devip->tape_location[partition] = pos;
+ scsi_set_resid(scp, (num - i) * size);
+ return check_condition_result;
+ }
+ sg_zero_buffer(sdb->table.sgl, sdb->table.nents,
+ size, i * size);
+ sg_copy_buffer(sdb->table.sgl, sdb->table.nents,
+ &(blp->data), 4, i * size, false);
+ if (fixed) {
+ if (blp->fl_size != devip->tape_blksize) {
+ scsi_set_resid(scp, (num - i) * size);
+ mk_sense_info_tape(scp, NO_SENSE, NO_ADDITIONAL_SENSE,
+ 0, num - i,
+ SENSE_FLAG_ILI);
+ return check_condition_result;
+ }
+ } else {
+ if (blp->fl_size != size) {
+ if (blp->fl_size < size)
+ scsi_set_resid(scp, size - blp->fl_size);
+ if (!sili) {
+ mk_sense_info_tape(scp, NO_SENSE, NO_ADDITIONAL_SENSE,
+ 0, size - blp->fl_size,
+ SENSE_FLAG_ILI);
+ return check_condition_result;
+ }
+ }
+ }
+ }
+ if (pos >= devip->tape_eop[partition]) {
+ mk_sense_info_tape(scp, NO_SENSE, NO_ADDITIONAL_SENSE,
+ EOP_EOM_DETECTED_ASCQ, fixed ? num - i : size,
+ SENSE_FLAG_EOM);
+ devip->tape_location[partition] = pos - 1;
+ return check_condition_result;
+ }
+ devip->tape_location[partition] = pos;
+
+ return 0;
+}
+
static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
{
bool check_prot;
@@ -4132,6 +4359,9 @@ static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
u8 *cmd = scp->cmnd;
bool meta_data_locked = false;
+ if (sdebug_ptype == TYPE_TAPE)
+ return resp_read_tape(scp, devip);
+
switch (cmd[0]) {
case READ_16:
ei_lba = 0;
generated by cgit (git 2.34.1) at 2025-06-15 02:49:46 +0000