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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.c57
1 files changed, 37 insertions, 20 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 6888b2ca5bfc..182d5a57ab74 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -101,6 +101,7 @@ static const char * scsi_debug_version_date = "20100324";
#define DEF_LBPU 0
#define DEF_LBPWS 0
#define DEF_LBPWS10 0
+#define DEF_LBPRZ 1
#define DEF_LOWEST_ALIGNED 0
#define DEF_NO_LUN_0 0
#define DEF_NUM_PARTS 0
@@ -126,6 +127,7 @@ static const char * scsi_debug_version_date = "20100324";
#define SCSI_DEBUG_OPT_TRANSPORT_ERR 16
#define SCSI_DEBUG_OPT_DIF_ERR 32
#define SCSI_DEBUG_OPT_DIX_ERR 64
+#define SCSI_DEBUG_OPT_MAC_TIMEOUT 128
/* When "every_nth" > 0 then modulo "every_nth" commands:
* - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
* - a RECOVERED_ERROR is simulated on successful read and write
@@ -185,6 +187,7 @@ static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO;
static unsigned int scsi_debug_lbpu = DEF_LBPU;
static unsigned int scsi_debug_lbpws = DEF_LBPWS;
static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10;
+static unsigned int scsi_debug_lbprz = DEF_LBPRZ;
static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT;
static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
@@ -774,10 +777,10 @@ static int inquiry_evpd_b1(unsigned char *arr)
return 0x3c;
}
-/* Thin provisioning VPD page (SBC-3) */
+/* Logical block provisioning VPD page (SBC-3) */
static int inquiry_evpd_b2(unsigned char *arr)
{
- memset(arr, 0, 0x8);
+ memset(arr, 0, 0x4);
arr[0] = 0; /* threshold exponent */
if (scsi_debug_lbpu)
@@ -789,7 +792,10 @@ static int inquiry_evpd_b2(unsigned char *arr)
if (scsi_debug_lbpws10)
arr[1] |= 1 << 5;
- return 0x8;
+ if (scsi_debug_lbprz)
+ arr[1] |= 1 << 2;
+
+ return 0x4;
}
#define SDEBUG_LONG_INQ_SZ 96
@@ -1070,8 +1076,11 @@ static int resp_readcap16(struct scsi_cmnd * scp,
arr[13] = scsi_debug_physblk_exp & 0xf;
arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f;
- if (scsi_debug_lbp())
+ if (scsi_debug_lbp()) {
arr[14] |= 0x80; /* LBPME */
+ if (scsi_debug_lbprz)
+ arr[14] |= 0x40; /* LBPRZ */
+ }
arr[15] = scsi_debug_lowest_aligned & 0xff;
@@ -1778,7 +1787,7 @@ static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) {
int len = min(psgl->length, resid);
- paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset;
+ paddr = kmap_atomic(sg_page(psgl)) + psgl->offset;
memcpy(paddr, dif_storep + dif_offset(sector), len);
sector += len >> 3;
@@ -1788,7 +1797,7 @@ static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
sector = do_div(tmp_sec, sdebug_store_sectors);
}
resid -= len;
- kunmap_atomic(paddr, KM_IRQ0);
+ kunmap_atomic(paddr);
}
dix_reads++;
@@ -1881,12 +1890,12 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
BUG_ON(scsi_sg_count(SCpnt) == 0);
BUG_ON(scsi_prot_sg_count(SCpnt) == 0);
- paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset;
+ paddr = kmap_atomic(sg_page(psgl)) + psgl->offset;
ppage_offset = 0;
/* For each data page */
scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) {
- daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset;
+ daddr = kmap_atomic(sg_page(dsgl)) + dsgl->offset;
/* For each sector-sized chunk in data page */
for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) {
@@ -1895,10 +1904,10 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
* protection page advance to the next one
*/
if (ppage_offset >= psgl->length) {
- kunmap_atomic(paddr, KM_IRQ1);
+ kunmap_atomic(paddr);
psgl = sg_next(psgl);
BUG_ON(psgl == NULL);
- paddr = kmap_atomic(sg_page(psgl), KM_IRQ1)
+ paddr = kmap_atomic(sg_page(psgl))
+ psgl->offset;
ppage_offset = 0;
}
@@ -1971,10 +1980,10 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
ppage_offset += sizeof(struct sd_dif_tuple);
}
- kunmap_atomic(daddr, KM_IRQ0);
+ kunmap_atomic(daddr);
}
- kunmap_atomic(paddr, KM_IRQ1);
+ kunmap_atomic(paddr);
dix_writes++;
@@ -1982,8 +1991,8 @@ static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
out:
dif_errors++;
- kunmap_atomic(daddr, KM_IRQ0);
- kunmap_atomic(paddr, KM_IRQ1);
+ kunmap_atomic(daddr);
+ kunmap_atomic(paddr);
return ret;
}
@@ -2045,10 +2054,13 @@ static void unmap_region(sector_t lba, unsigned int len)
block = lba + alignment;
rem = do_div(block, granularity);
- if (rem == 0 && lba + granularity <= end &&
- block < map_size)
+ if (rem == 0 && lba + granularity <= end && block < map_size) {
clear_bit(block, map_storep);
-
+ if (scsi_debug_lbprz)
+ memset(fake_storep +
+ block * scsi_debug_sector_size, 0,
+ scsi_debug_sector_size);
+ }
lba += granularity - rem;
}
}
@@ -2220,7 +2232,7 @@ static int resp_get_lba_status(struct scsi_cmnd * scmd,
mapped = map_state(lba, &num);
memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN);
- put_unaligned_be32(16, &arr[0]); /* Parameter Data Length */
+ put_unaligned_be32(20, &arr[0]); /* Parameter Data Length */
put_unaligned_be64(lba, &arr[8]); /* LBA */
put_unaligned_be32(num, &arr[16]); /* Number of blocks */
arr[20] = !mapped; /* mapped = 0, unmapped = 1 */
@@ -2303,7 +2315,7 @@ static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba,
offset = 0;
for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) {
- kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0);
+ kaddr = (unsigned char *)kmap_atomic(sg_page(sg));
if (!kaddr)
goto out;
@@ -2311,7 +2323,7 @@ static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba,
*(kaddr + sg->offset + j) ^= *(buf + offset + j);
offset += sg->length;
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
}
ret = 0;
out:
@@ -2730,6 +2742,7 @@ module_param_named(guard, scsi_debug_guard, int, S_IRUGO);
module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO);
module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO);
module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO);
+module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO);
module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO);
module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR);
module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR);
@@ -2771,6 +2784,7 @@ MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)");
MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)");
MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)");
MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)");
+MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)");
MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)");
MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)");
MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to 255(def))");
@@ -3615,6 +3629,9 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
scsi_debug_every_nth = -1;
if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts)
return 0; /* ignore command causing timeout */
+ else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts &&
+ scsi_medium_access_command(SCpnt))
+ return 0; /* time out reads and writes */
else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts)
inj_recovered = 1; /* to reads and writes below */
else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-18 05:25:07 +0300