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Diffstat (limited to 'drivers/scsi/scsi_debug.c')
-rw-r--r--drivers/scsi/scsi_debug.c194
1 files changed, 146 insertions, 48 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index aa4b6b80aad..113232135d2 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -80,6 +80,8 @@ static const char *scsi_debug_version_date = "20141022";
#define INVALID_FIELD_IN_PARAM_LIST 0x26
#define UA_RESET_ASC 0x29
#define UA_CHANGED_ASC 0x2a
+#define TARGET_CHANGED_ASC 0x3f
+#define LUNS_CHANGED_ASCQ 0x0e
#define INSUFF_RES_ASC 0x55
#define INSUFF_RES_ASCQ 0x3
#define POWER_ON_RESET_ASCQ 0x0
@@ -91,6 +93,8 @@ static const char *scsi_debug_version_date = "20141022";
#define THRESHOLD_EXCEEDED 0x5d
#define LOW_POWER_COND_ON 0x5e
#define MISCOMPARE_VERIFY_ASC 0x1d
+#define MICROCODE_CHANGED_ASCQ 0x1 /* with TARGET_CHANGED_ASC */
+#define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16
/* Additional Sense Code Qualifier (ASCQ) */
#define ACK_NAK_TO 0x3
@@ -128,7 +132,6 @@ static const char *scsi_debug_version_date = "20141022";
#define DEF_REMOVABLE false
#define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */
#define DEF_SECTOR_SIZE 512
-#define DEF_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */
#define DEF_UNMAP_ALIGNMENT 0
#define DEF_UNMAP_GRANULARITY 1
#define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF
@@ -181,7 +184,10 @@ static const char *scsi_debug_version_date = "20141022";
#define SDEBUG_UA_BUS_RESET 1
#define SDEBUG_UA_MODE_CHANGED 2
#define SDEBUG_UA_CAPACITY_CHANGED 3
-#define SDEBUG_NUM_UAS 4
+#define SDEBUG_UA_LUNS_CHANGED 4
+#define SDEBUG_UA_MICROCODE_CHANGED 5 /* simulate firmware change */
+#define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 6
+#define SDEBUG_NUM_UAS 7
/* for check_readiness() */
#define UAS_ONLY 1 /* check for UAs only */
@@ -327,6 +333,7 @@ static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *);
+static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *);
struct opcode_info_t {
u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff
@@ -481,8 +488,9 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = {
{0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10,
NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7,
0, 0, 0, 0, 0, 0} },
- {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* WRITE_BUFFER */
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
+ {0, 0x3b, 0, F_D_OUT_MAYBE, resp_write_buffer, NULL,
+ {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0,
+ 0, 0, 0, 0} }, /* WRITE_BUFFER */
{1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10,
write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff,
0xff, 0xc7, 0, 0, 0, 0, 0, 0} },
@@ -783,6 +791,22 @@ static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
/* return -ENOTTY; // correct return but upsets fdisk */
}
+static void clear_luns_changed_on_target(struct sdebug_dev_info *devip)
+{
+ struct sdebug_host_info *sdhp;
+ struct sdebug_dev_info *dp;
+
+ spin_lock(&sdebug_host_list_lock);
+ list_for_each_entry(sdhp, &sdebug_host_list, host_list) {
+ list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) {
+ if ((devip->sdbg_host == dp->sdbg_host) &&
+ (devip->target == dp->target))
+ clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm);
+ }
+ }
+ spin_unlock(&sdebug_host_list_lock);
+}
+
static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only,
struct sdebug_dev_info * devip)
{
@@ -817,6 +841,37 @@ static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only,
UA_CHANGED_ASC, CAPACITY_CHANGED_ASCQ);
if (debug)
cp = "capacity data changed";
+ break;
+ case SDEBUG_UA_MICROCODE_CHANGED:
+ mk_sense_buffer(SCpnt, UNIT_ATTENTION,
+ TARGET_CHANGED_ASC, MICROCODE_CHANGED_ASCQ);
+ if (debug)
+ cp = "microcode has been changed";
+ break;
+ case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET:
+ mk_sense_buffer(SCpnt, UNIT_ATTENTION,
+ TARGET_CHANGED_ASC,
+ MICROCODE_CHANGED_WO_RESET_ASCQ);
+ if (debug)
+ cp = "microcode has been changed without reset";
+ break;
+ case SDEBUG_UA_LUNS_CHANGED:
+ /*
+ * SPC-3 behavior is to report a UNIT ATTENTION with
+ * ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN
+ * on the target, until a REPORT LUNS command is
+ * received. SPC-4 behavior is to report it only once.
+ * NOTE: scsi_debug_scsi_level does not use the same
+ * values as struct scsi_device->scsi_level.
+ */
+ if (scsi_debug_scsi_level >= 6) /* SPC-4 and above */
+ clear_luns_changed_on_target(devip);
+ mk_sense_buffer(SCpnt, UNIT_ATTENTION,
+ TARGET_CHANGED_ASC,
+ LUNS_CHANGED_ASCQ);
+ if (debug)
+ cp = "reported luns data has changed";
+ break;
default:
pr_warn("%s: unexpected unit attention code=%d\n",
__func__, k);
@@ -1623,7 +1678,7 @@ resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
req_opcode = cmd[3];
req_sa = get_unaligned_be16(cmd + 4);
alloc_len = get_unaligned_be32(cmd + 6);
- if (alloc_len < 4 && alloc_len > 0xffff) {
+ if (alloc_len < 4 || alloc_len > 0xffff) {
mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1);
return check_condition_result;
}
@@ -1631,7 +1686,7 @@ resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
a_len = 8192;
else
a_len = alloc_len;
- arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_KERNEL);
+ arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC);
if (NULL == arr) {
mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC,
INSUFF_RES_ASCQ);
@@ -3033,6 +3088,55 @@ resp_write_same_16(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
return resp_write_same(scp, lba, num, ei_lba, unmap, ndob);
}
+/* Note the mode field is in the same position as the (lower) service action
+ * field. For the Report supported operation codes command, SPC-4 suggests
+ * each mode of this command should be reported separately; for future. */
+static int
+resp_write_buffer(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+{
+ u8 *cmd = scp->cmnd;
+ struct scsi_device *sdp = scp->device;
+ struct sdebug_dev_info *dp;
+ u8 mode;
+
+ mode = cmd[1] & 0x1f;
+ switch (mode) {
+ case 0x4: /* download microcode (MC) and activate (ACT) */
+ /* set UAs on this device only */
+ set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm);
+ set_bit(SDEBUG_UA_MICROCODE_CHANGED, devip->uas_bm);
+ break;
+ case 0x5: /* download MC, save and ACT */
+ set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, devip->uas_bm);
+ break;
+ case 0x6: /* download MC with offsets and ACT */
+ /* set UAs on most devices (LUs) in this target */
+ list_for_each_entry(dp,
+ &devip->sdbg_host->dev_info_list,
+ dev_list)
+ if (dp->target == sdp->id) {
+ set_bit(SDEBUG_UA_BUS_RESET, dp->uas_bm);
+ if (devip != dp)
+ set_bit(SDEBUG_UA_MICROCODE_CHANGED,
+ dp->uas_bm);
+ }
+ break;
+ case 0x7: /* download MC with offsets, save, and ACT */
+ /* set UA on all devices (LUs) in this target */
+ list_for_each_entry(dp,
+ &devip->sdbg_host->dev_info_list,
+ dev_list)
+ if (dp->target == sdp->id)
+ set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET,
+ dp->uas_bm);
+ break;
+ default:
+ /* do nothing for this command for other mode values */
+ break;
+ }
+ return 0;
+}
+
static int
resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
{
@@ -3045,18 +3149,12 @@ resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
u8 num;
unsigned long iflags;
int ret;
+ int retval = 0;
- lba = get_unaligned_be32(cmd + 2);
+ lba = get_unaligned_be64(cmd + 2);
num = cmd[13]; /* 1 to a maximum of 255 logical blocks */
if (0 == num)
return 0; /* degenerate case, not an error */
- dnum = 2 * num;
- arr = kzalloc(dnum * lb_size, GFP_ATOMIC);
- if (NULL == arr) {
- mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC,
- INSUFF_RES_ASCQ);
- return check_condition_result;
- }
if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
(cmd[1] & 0xe0)) {
mk_sense_invalid_opcode(scp);
@@ -3079,6 +3177,13 @@ resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0);
return check_condition_result;
}
+ dnum = 2 * num;
+ arr = kzalloc(dnum * lb_size, GFP_ATOMIC);
+ if (NULL == arr) {
+ mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC,
+ INSUFF_RES_ASCQ);
+ return check_condition_result;
+ }
write_lock_irqsave(&atomic_rw, iflags);
@@ -3089,24 +3194,24 @@ resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
ret = do_device_access(scp, 0, dnum, true);
fake_storep = fake_storep_hold;
if (ret == -1) {
- write_unlock_irqrestore(&atomic_rw, iflags);
- kfree(arr);
- return DID_ERROR << 16;
+ retval = DID_ERROR << 16;
+ goto cleanup;
} else if ((ret < (dnum * lb_size)) &&
(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb "
"indicated=%u, IO sent=%d bytes\n", my_name,
dnum * lb_size, ret);
if (!comp_write_worker(lba, num, arr)) {
- write_unlock_irqrestore(&atomic_rw, iflags);
- kfree(arr);
mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0);
- return check_condition_result;
+ retval = check_condition_result;
+ goto cleanup;
}
if (scsi_debug_lbp())
map_region(lba, num);
+cleanup:
write_unlock_irqrestore(&atomic_rw, iflags);
- return 0;
+ kfree(arr);
+ return retval;
}
struct unmap_block_desc {
@@ -3228,6 +3333,7 @@ static int resp_report_luns(struct scsi_cmnd * scp,
unsigned char arr[SDEBUG_RLUN_ARR_SZ];
unsigned char * max_addr;
+ clear_luns_changed_on_target(devip);
alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24);
shortish = (alloc_len < 4);
if (shortish || (select_report > 2)) {
@@ -4368,10 +4474,27 @@ static ssize_t max_luns_store(struct device_driver *ddp, const char *buf,
size_t count)
{
int n;
+ bool changed;
if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
+ changed = (scsi_debug_max_luns != n);
scsi_debug_max_luns = n;
sdebug_max_tgts_luns();
+ if (changed && (scsi_debug_scsi_level >= 5)) { /* >= SPC-3 */
+ struct sdebug_host_info *sdhp;
+ struct sdebug_dev_info *dp;
+
+ spin_lock(&sdebug_host_list_lock);
+ list_for_each_entry(sdhp, &sdebug_host_list,
+ host_list) {
+ list_for_each_entry(dp, &sdhp->dev_info_list,
+ dev_list) {
+ set_bit(SDEBUG_UA_LUNS_CHANGED,
+ dp->uas_bm);
+ }
+ }
+ spin_unlock(&sdebug_host_list_lock);
+ }
return count;
}
return -EINVAL;
@@ -4438,6 +4561,7 @@ static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf,
struct sdebug_host_info *sdhp;
struct sdebug_dev_info *dp;
+ spin_lock(&sdebug_host_list_lock);
list_for_each_entry(sdhp, &sdebug_host_list,
host_list) {
list_for_each_entry(dp, &sdhp->dev_info_list,
@@ -4446,6 +4570,7 @@ static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf,
dp->uas_bm);
}
}
+ spin_unlock(&sdebug_host_list_lock);
}
return count;
}
@@ -4988,32 +5113,6 @@ sdebug_change_qdepth(struct scsi_device *sdev, int qdepth)
}
static int
-sdebug_change_qtype(struct scsi_device *sdev, int qtype)
-{
- qtype = scsi_change_queue_type(sdev, qtype);
- if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) {
- const char *cp;
-
- switch (qtype) {
- case 0:
- cp = "untagged";
- break;
- case MSG_SIMPLE_TAG:
- cp = "simple tags";
- break;
- case MSG_ORDERED_TAG:
- cp = "ordered tags";
- break;
- default:
- cp = "unknown";
- break;
- }
- sdev_printk(KERN_INFO, sdev, "%s: to %s\n", __func__, cp);
- }
- return qtype;
-}
-
-static int
check_inject(struct scsi_cmnd *scp)
{
struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp);
@@ -5212,7 +5311,6 @@ static struct scsi_host_template sdebug_driver_template = {
.ioctl = scsi_debug_ioctl,
.queuecommand = sdebug_queuecommand_lock_or_not,
.change_queue_depth = sdebug_change_qdepth,
- .change_queue_type = sdebug_change_qtype,
.eh_abort_handler = scsi_debug_abort,
.eh_device_reset_handler = scsi_debug_device_reset,
.eh_target_reset_handler = scsi_debug_target_reset,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-04 00:12:38 +0000