aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/scsi_debug.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
-rw-r--r--drivers/scsi/scsi_debug.c1077
1 files changed, 561 insertions, 516 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index a6b2d72022f..1328a262107 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -64,6 +64,7 @@ static const char * scsi_debug_version_date = "20100324";
/* Additional Sense Code (ASC) */
#define NO_ADDITIONAL_SENSE 0x0
#define LOGICAL_UNIT_NOT_READY 0x4
+#define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8
#define UNRECOVERED_READ_ERR 0x11
#define PARAMETER_LIST_LENGTH_ERR 0x1a
#define INVALID_OPCODE 0x20
@@ -89,32 +90,36 @@ static const char * scsi_debug_version_date = "20100324";
/* With these defaults, this driver will make 1 host with 1 target
* (id 0) containing 1 logical unit (lun 0). That is 1 device.
*/
+#define DEF_ATO 1
#define DEF_DELAY 1
#define DEF_DEV_SIZE_MB 8
-#define DEF_EVERY_NTH 0
-#define DEF_NUM_PARTS 0
-#define DEF_OPTS 0
-#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */
-#define DEF_PTYPE 0
+#define DEF_DIF 0
+#define DEF_DIX 0
#define DEF_D_SENSE 0
-#define DEF_NO_LUN_0 0
-#define DEF_VIRTUAL_GB 0
+#define DEF_EVERY_NTH 0
#define DEF_FAKE_RW 0
-#define DEF_VPD_USE_HOSTNO 1
-#define DEF_SECTOR_SIZE 512
-#define DEF_DIX 0
-#define DEF_DIF 0
#define DEF_GUARD 0
-#define DEF_ATO 1
-#define DEF_PHYSBLK_EXP 0
+#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
+#define DEF_OPTS 0
#define DEF_OPT_BLKS 64
+#define DEF_PHYSBLK_EXP 0
+#define DEF_PTYPE 0
+#define DEF_REMOVABLE false
+#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */
+#define DEF_SECTOR_SIZE 512
+#define DEF_UNMAP_ALIGNMENT 0
+#define DEF_UNMAP_GRANULARITY 1
#define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF
#define DEF_UNMAP_MAX_DESC 256
-#define DEF_UNMAP_GRANULARITY 1
-#define DEF_UNMAP_ALIGNMENT 0
-#define DEF_TPWS 0
-#define DEF_TPU 0
+#define DEF_VIRTUAL_GB 0
+#define DEF_VPD_USE_HOSTNO 1
+#define DEF_WRITESAME_LENGTH 0xFFFF
/* bit mask values for scsi_debug_opts */
#define SCSI_DEBUG_OPT_NOISE 1
@@ -124,6 +129,8 @@ 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
+#define SCSI_DEBUG_OPT_SHORT_TRANSFER 256
/* 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
@@ -144,6 +151,7 @@ static const char * scsi_debug_version_date = "20100324";
/* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this
* sector on read commands: */
#define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */
+#define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */
/* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1)
* or "peripheral device" addressing (value 0) */
@@ -155,41 +163,45 @@ static const char * scsi_debug_version_date = "20100324";
#define SCSI_DEBUG_CANQUEUE 255
static int scsi_debug_add_host = DEF_NUM_HOST;
+static int scsi_debug_ato = DEF_ATO;
static int scsi_debug_delay = DEF_DELAY;
static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB;
+static int scsi_debug_dif = DEF_DIF;
+static int scsi_debug_dix = DEF_DIX;
+static int scsi_debug_dsense = DEF_D_SENSE;
static int scsi_debug_every_nth = DEF_EVERY_NTH;
+static int scsi_debug_fake_rw = DEF_FAKE_RW;
+static unsigned int scsi_debug_guard = DEF_GUARD;
+static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED;
static int scsi_debug_max_luns = DEF_MAX_LUNS;
static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE;
-static int scsi_debug_num_parts = DEF_NUM_PARTS;
+static int scsi_debug_no_lun_0 = DEF_NO_LUN_0;
static int scsi_debug_no_uld = 0;
+static int scsi_debug_num_parts = DEF_NUM_PARTS;
static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */
+static int scsi_debug_opt_blks = DEF_OPT_BLKS;
static int scsi_debug_opts = DEF_OPTS;
-static int scsi_debug_scsi_level = DEF_SCSI_LEVEL;
+static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP;
static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */
-static int scsi_debug_dsense = DEF_D_SENSE;
-static int scsi_debug_no_lun_0 = DEF_NO_LUN_0;
+static int scsi_debug_scsi_level = DEF_SCSI_LEVEL;
+static int scsi_debug_sector_size = DEF_SECTOR_SIZE;
static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB;
-static int scsi_debug_fake_rw = DEF_FAKE_RW;
static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO;
-static int scsi_debug_sector_size = DEF_SECTOR_SIZE;
-static int scsi_debug_dix = DEF_DIX;
-static int scsi_debug_dif = DEF_DIF;
-static int scsi_debug_guard = DEF_GUARD;
-static int scsi_debug_ato = DEF_ATO;
-static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP;
-static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED;
-static int scsi_debug_opt_blks = DEF_OPT_BLKS;
-static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC;
-static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
-static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
+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_tpws = DEF_TPWS;
-static unsigned int scsi_debug_tpu = DEF_TPU;
+static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
+static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
+static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC;
+static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH;
+static bool scsi_debug_removable = DEF_REMOVABLE;
+static bool scsi_debug_clustering;
static int scsi_debug_cmnd_count = 0;
#define DEV_READONLY(TGT) (0)
-#define DEV_REMOVEABLE(TGT) (0)
static unsigned int sdebug_store_sectors;
static sector_t sdebug_capacity; /* in sectors */
@@ -206,6 +218,11 @@ static int sdebug_sectors_per; /* sectors per cylinder */
#define SCSI_DEBUG_MAX_CMD_LEN 32
+static unsigned int scsi_debug_lbp(void)
+{
+ return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10;
+}
+
struct sdebug_dev_info {
struct list_head dev_list;
unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */
@@ -244,7 +261,7 @@ struct sdebug_queued_cmd {
static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE];
static unsigned char * fake_storep; /* ramdisk storage */
-static unsigned char *dif_storep; /* protection info */
+static struct sd_dif_tuple *dif_storep; /* protection info */
static void *map_storep; /* provisioning map */
static unsigned long map_size;
@@ -263,11 +280,6 @@ static char sdebug_proc_name[] = "scsi_debug";
static struct bus_type pseudo_lld_bus;
-static inline sector_t dif_offset(sector_t sector)
-{
- return sector << 3;
-}
-
static struct device_driver sdebug_driverfs_driver = {
.name = sdebug_proc_name,
.bus = &pseudo_lld_bus,
@@ -284,6 +296,20 @@ static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
0, 0, 0x0, 0x0};
+static void *fake_store(unsigned long long lba)
+{
+ lba = do_div(lba, sdebug_store_sectors);
+
+ return fake_storep + lba * scsi_debug_sector_size;
+}
+
+static struct sd_dif_tuple *dif_store(sector_t sector)
+{
+ sector = do_div(sector, sdebug_store_sectors);
+
+ return dif_storep + sector;
+}
+
static int sdebug_add_adapter(void);
static void sdebug_remove_adapter(void);
@@ -425,10 +451,7 @@ static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents,
arr, arr_len);
- if (sdb->resid)
- sdb->resid -= act_len;
- else
- sdb->resid = scsi_bufflen(scp) - act_len;
+ sdb->resid = scsi_bufflen(scp) - act_len;
return 0;
}
@@ -727,7 +750,7 @@ static int inquiry_evpd_b0(unsigned char * arr)
/* Optimal Transfer Length */
put_unaligned_be32(scsi_debug_opt_blks, &arr[8]);
- if (scsi_debug_tpu) {
+ if (scsi_debug_lbpu) {
/* Maximum Unmap LBA Count */
put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]);
@@ -744,7 +767,10 @@ static int inquiry_evpd_b0(unsigned char * arr)
/* Optimal Unmap Granularity */
put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]);
- return 0x3c; /* Mandatory page length for thin provisioning */
+ /* Maximum WRITE SAME Length */
+ put_unaligned_be64(scsi_debug_write_same_length, &arr[32]);
+
+ return 0x3c; /* Mandatory page length for Logical Block Provisioning */
return sizeof(vpdb0_data);
}
@@ -761,19 +787,25 @@ 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_tpu)
+ if (scsi_debug_lbpu)
arr[1] = 1 << 7;
- if (scsi_debug_tpws)
+ if (scsi_debug_lbpws)
arr[1] |= 1 << 6;
- return 0x8;
+ if (scsi_debug_lbpws10)
+ arr[1] |= 1 << 5;
+
+ if (scsi_debug_lbprz)
+ arr[1] |= 1 << 2;
+
+ return 0x4;
}
#define SDEBUG_LONG_INQ_SZ 96
@@ -831,7 +863,8 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target,
arr[n++] = 0x89; /* ATA information */
arr[n++] = 0xb0; /* Block limits (SBC) */
arr[n++] = 0xb1; /* Block characteristics (SBC) */
- arr[n++] = 0xb2; /* Thin provisioning (SBC) */
+ if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */
+ arr[n++] = 0xb2;
arr[3] = n - 4; /* number of supported VPD pages */
} else if (0x80 == cmd[2]) { /* unit serial number */
arr[1] = cmd[2]; /*sanity */
@@ -879,7 +912,7 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target,
} else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_b1(&arr[4]);
- } else if (0xb2 == cmd[2]) { /* Thin provisioning (SBC) */
+ } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_b2(&arr[4]);
} else {
@@ -896,7 +929,7 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target,
return ret;
}
/* drops through here for a standard inquiry */
- arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */
+ arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */
arr[2] = scsi_debug_scsi_level;
arr[3] = 2; /* response_data_format==2 */
arr[4] = SDEBUG_LONG_INQ_SZ - 5;
@@ -1053,8 +1086,11 @@ 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_tpu || scsi_debug_tpws)
- arr[14] |= 0x80; /* TPE */
+ if (scsi_debug_lbp()) {
+ arr[14] |= 0x80; /* LBPME */
+ if (scsi_debug_lbprz)
+ arr[14] |= 0x40; /* LBPRZ */
+ }
arr[15] = scsi_debug_lowest_aligned & 0xff;
@@ -1185,7 +1221,7 @@ static int resp_format_pg(unsigned char * p, int pcontrol, int target)
p[11] = sdebug_sectors_per & 0xff;
p[12] = (scsi_debug_sector_size >> 8) & 0xff;
p[13] = scsi_debug_sector_size & 0xff;
- if (DEV_REMOVEABLE(target))
+ if (scsi_debug_removable)
p[20] |= 0x20; /* should agree with INQUIRY */
if (1 == pcontrol)
memset(p + 2, 0, sizeof(format_pg) - 2);
@@ -1666,114 +1702,159 @@ static int check_device_access_params(struct sdebug_dev_info *devi,
return 0;
}
+/* Returns number of bytes copied or -1 if error. */
static int do_device_access(struct scsi_cmnd *scmd,
struct sdebug_dev_info *devi,
unsigned long long lba, unsigned int num, int write)
{
int ret;
unsigned long long block, rest = 0;
- int (*func)(struct scsi_cmnd *, unsigned char *, int);
+ struct scsi_data_buffer *sdb;
+ enum dma_data_direction dir;
+ size_t (*func)(struct scatterlist *, unsigned int, void *, size_t,
+ off_t);
+
+ if (write) {
+ sdb = scsi_out(scmd);
+ dir = DMA_TO_DEVICE;
+ func = sg_pcopy_to_buffer;
+ } else {
+ sdb = scsi_in(scmd);
+ dir = DMA_FROM_DEVICE;
+ func = sg_pcopy_from_buffer;
+ }
- func = write ? fetch_to_dev_buffer : fill_from_dev_buffer;
+ if (!sdb->length)
+ return 0;
+ if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir))
+ return -1;
block = do_div(lba, sdebug_store_sectors);
if (block + num > sdebug_store_sectors)
rest = block + num - sdebug_store_sectors;
- ret = func(scmd, fake_storep + (block * scsi_debug_sector_size),
- (num - rest) * scsi_debug_sector_size);
- if (!ret && rest)
- ret = func(scmd, fake_storep, rest * scsi_debug_sector_size);
+ ret = func(sdb->table.sgl, sdb->table.nents,
+ fake_storep + (block * scsi_debug_sector_size),
+ (num - rest) * scsi_debug_sector_size, 0);
+ if (ret != (num - rest) * scsi_debug_sector_size)
+ return ret;
+
+ if (rest) {
+ ret += func(sdb->table.sgl, sdb->table.nents,
+ fake_storep, rest * scsi_debug_sector_size,
+ (num - rest) * scsi_debug_sector_size);
+ }
return ret;
}
-static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
- unsigned int sectors, u32 ei_lba)
+static __be16 dif_compute_csum(const void *buf, int len)
{
- unsigned int i, resid;
- struct scatterlist *psgl;
- struct sd_dif_tuple *sdt;
- sector_t sector;
- sector_t tmp_sec = start_sec;
- void *paddr;
+ __be16 csum;
- start_sec = do_div(tmp_sec, sdebug_store_sectors);
+ if (scsi_debug_guard)
+ csum = (__force __be16)ip_compute_csum(buf, len);
+ else
+ csum = cpu_to_be16(crc_t10dif(buf, len));
- sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec));
+ return csum;
+}
- for (i = 0 ; i < sectors ; i++) {
- u16 csum;
+static int dif_verify(struct sd_dif_tuple *sdt, const void *data,
+ sector_t sector, u32 ei_lba)
+{
+ __be16 csum = dif_compute_csum(data, scsi_debug_sector_size);
- if (sdt[i].app_tag == 0xffff)
- continue;
+ if (sdt->guard_tag != csum) {
+ pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n",
+ __func__,
+ (unsigned long)sector,
+ be16_to_cpu(sdt->guard_tag),
+ be16_to_cpu(csum));
+ return 0x01;
+ }
+ if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
+ be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) {
+ pr_err("%s: REF check failed on sector %lu\n",
+ __func__, (unsigned long)sector);
+ return 0x03;
+ }
+ if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
+ be32_to_cpu(sdt->ref_tag) != ei_lba) {
+ pr_err("%s: REF check failed on sector %lu\n",
+ __func__, (unsigned long)sector);
+ return 0x03;
+ }
+ return 0;
+}
- sector = start_sec + i;
+static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector,
+ unsigned int sectors, bool read)
+{
+ size_t resid;
+ void *paddr;
+ const void *dif_store_end = dif_storep + sdebug_store_sectors;
+ struct sg_mapping_iter miter;
- switch (scsi_debug_guard) {
- case 1:
- csum = ip_compute_csum(fake_storep +
- sector * scsi_debug_sector_size,
- scsi_debug_sector_size);
- break;
- case 0:
- csum = crc_t10dif(fake_storep +
- sector * scsi_debug_sector_size,
- scsi_debug_sector_size);
- csum = cpu_to_be16(csum);
- break;
- default:
- BUG();
- }
+ /* Bytes of protection data to copy into sgl */
+ resid = sectors * sizeof(*dif_storep);
- if (sdt[i].guard_tag != csum) {
- printk(KERN_ERR "%s: GUARD check failed on sector %lu" \
- " rcvd 0x%04x, data 0x%04x\n", __func__,
- (unsigned long)sector,
- be16_to_cpu(sdt[i].guard_tag),
- be16_to_cpu(csum));
- dif_errors++;
- return 0x01;
- }
+ sg_miter_start(&miter, scsi_prot_sglist(SCpnt),
+ scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC |
+ (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG));
- if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
- be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) {
- printk(KERN_ERR "%s: REF check failed on sector %lu\n",
- __func__, (unsigned long)sector);
- dif_errors++;
- return 0x03;
- }
+ while (sg_miter_next(&miter) && resid > 0) {
+ size_t len = min(miter.length, resid);
+ void *start = dif_store(sector);
+ size_t rest = 0;
- if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
- be32_to_cpu(sdt[i].ref_tag) != ei_lba) {
- printk(KERN_ERR "%s: REF check failed on sector %lu\n",
- __func__, (unsigned long)sector);
- dif_errors++;
- return 0x03;
+ if (dif_store_end < start + len)
+ rest = start + len - dif_store_end;
+
+ paddr = miter.addr;
+
+ if (read)
+ memcpy(paddr, start, len - rest);
+ else
+ memcpy(start, paddr, len - rest);
+
+ if (rest) {
+ if (read)
+ memcpy(paddr + len - rest, dif_storep, rest);
+ else
+ memcpy(dif_storep, paddr + len - rest, rest);
}
- ei_lba++;
+ sector += len / sizeof(*dif_storep);
+ resid -= len;
}
+ sg_miter_stop(&miter);
+}
- resid = sectors * 8; /* Bytes of protection data to copy into sgl */
- sector = start_sec;
+static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
+ unsigned int sectors, u32 ei_lba)
+{
+ unsigned int i;
+ struct sd_dif_tuple *sdt;
+ sector_t sector;
+
+ for (i = 0; i < sectors; i++, ei_lba++) {
+ int ret;
- scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) {
- int len = min(psgl->length, resid);
+ sector = start_sec + i;
+ sdt = dif_store(sector);
- paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset;
- memcpy(paddr, dif_storep + dif_offset(sector), len);
+ if (sdt->app_tag == cpu_to_be16(0xffff))
+ continue;
- sector += len >> 3;
- if (sector >= sdebug_store_sectors) {
- /* Force wrap */
- tmp_sec = sector;
- sector = do_div(tmp_sec, sdebug_store_sectors);
+ ret = dif_verify(sdt, fake_store(sector), sector, ei_lba);
+ if (ret) {
+ dif_errors++;
+ return ret;
}
- resid -= len;
- kunmap_atomic(paddr, KM_IRQ0);
}
+ dif_copy_prot(SCpnt, start_sec, sectors, true);
dix_reads++;
return 0;
@@ -1791,15 +1872,15 @@ static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba,
return ret;
if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) &&
- (lba <= OPT_MEDIUM_ERR_ADDR) &&
+ (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) &&
((lba + num) > OPT_MEDIUM_ERR_ADDR)) {
/* claim unrecoverable read error */
- mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR,
- 0);
+ mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0);
/* set info field and valid bit for fixed descriptor */
if (0x70 == (devip->sense_buff[0] & 0x7f)) {
devip->sense_buff[0] |= 0x80; /* Valid bit */
- ret = OPT_MEDIUM_ERR_ADDR;
+ ret = (lba < OPT_MEDIUM_ERR_ADDR)
+ ? OPT_MEDIUM_ERR_ADDR : (int)lba;
devip->sense_buff[3] = (ret >> 24) & 0xff;
devip->sense_buff[4] = (ret >> 16) & 0xff;
devip->sense_buff[5] = (ret >> 8) & 0xff;
@@ -1809,20 +1890,27 @@ static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba,
return check_condition_result;
}
+ read_lock_irqsave(&atomic_rw, iflags);
+
/* DIX + T10 DIF */
if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) {
int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba);
if (prot_ret) {
+ read_unlock_irqrestore(&atomic_rw, iflags);
mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret);
return illegal_condition_result;
}
}
- read_lock_irqsave(&atomic_rw, iflags);
ret = do_device_access(SCpnt, devip, lba, num, 0);
read_unlock_irqrestore(&atomic_rw, iflags);
- return ret;
+ if (ret == -1)
+ return DID_ERROR << 16;
+
+ scsi_in(SCpnt)->resid = scsi_bufflen(SCpnt) - ret;
+
+ return 0;
}
void dump_sector(unsigned char *buf, int len)
@@ -1849,145 +1937,114 @@ void dump_sector(unsigned char *buf, int len)
static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
unsigned int sectors, u32 ei_lba)
{
- int i, j, ret;
+ int ret;
struct sd_dif_tuple *sdt;
- struct scatterlist *dsgl = scsi_sglist(SCpnt);
- struct scatterlist *psgl = scsi_prot_sglist(SCpnt);
- void *daddr, *paddr;
- sector_t tmp_sec = start_sec;
- sector_t sector;
+ void *daddr;
+ sector_t sector = start_sec;
int ppage_offset;
- unsigned short csum;
-
- sector = do_div(tmp_sec, sdebug_store_sectors);
+ int dpage_offset;
+ struct sg_mapping_iter diter;
+ struct sg_mapping_iter piter;
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;
- 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;
-
- /* For each sector-sized chunk in data page */
- for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) {
+ sg_miter_start(&piter, scsi_prot_sglist(SCpnt),
+ scsi_prot_sg_count(SCpnt),
+ SG_MITER_ATOMIC | SG_MITER_FROM_SG);
+ sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
+ SG_MITER_ATOMIC | SG_MITER_FROM_SG);
+
+ /* For each protection page */
+ while (sg_miter_next(&piter)) {
+ dpage_offset = 0;
+ if (WARN_ON(!sg_miter_next(&diter))) {
+ ret = 0x01;
+ goto out;
+ }
+ for (ppage_offset = 0; ppage_offset < piter.length;
+ ppage_offset += sizeof(struct sd_dif_tuple)) {
/* If we're at the end of the current
- * protection page advance to the next one
+ * data page advance to the next one
*/
- if (ppage_offset >= psgl->length) {
- kunmap_atomic(paddr, KM_IRQ1);
- psgl = sg_next(psgl);
- BUG_ON(psgl == NULL);
- paddr = kmap_atomic(sg_page(psgl), KM_IRQ1)
- + psgl->offset;
- ppage_offset = 0;
- }
-
- sdt = paddr + ppage_offset;
-
- switch (scsi_debug_guard) {
- case 1:
- csum = ip_compute_csum(daddr,
- scsi_debug_sector_size);
- break;
- case 0:
- csum = cpu_to_be16(crc_t10dif(daddr,
- scsi_debug_sector_size));
- break;
- default:
- BUG();
- ret = 0;
- goto out;
+ if (dpage_offset >= diter.length) {
+ if (WARN_ON(!sg_miter_next(&diter))) {
+ ret = 0x01;
+ goto out;
+ }
+ dpage_offset = 0;
}
- if (sdt->guard_tag != csum) {
- printk(KERN_ERR
- "%s: GUARD check failed on sector %lu " \
- "rcvd 0x%04x, calculated 0x%04x\n",
- __func__, (unsigned long)sector,
- be16_to_cpu(sdt->guard_tag),
- be16_to_cpu(csum));
- ret = 0x01;
- dump_sector(daddr, scsi_debug_sector_size);
- goto out;
- }
+ sdt = piter.addr + ppage_offset;
+ daddr = diter.addr + dpage_offset;
- if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
- be32_to_cpu(sdt->ref_tag)
- != (start_sec & 0xffffffff)) {
- printk(KERN_ERR
- "%s: REF check failed on sector %lu\n",
- __func__, (unsigned long)sector);
- ret = 0x03;
+ ret = dif_verify(sdt, daddr, sector, ei_lba);
+ if (ret) {
dump_sector(daddr, scsi_debug_sector_size);
goto out;
}
- if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
- be32_to_cpu(sdt->ref_tag) != ei_lba) {
- printk(KERN_ERR
- "%s: REF check failed on sector %lu\n",
- __func__, (unsigned long)sector);
- ret = 0x03;
- dump_sector(daddr, scsi_debug_sector_size);
- goto out;
- }
-
- /* Would be great to copy this in bigger
- * chunks. However, for the sake of
- * correctness we need to verify each sector
- * before writing it to "stable" storage
- */
- memcpy(dif_storep + dif_offset(sector), sdt, 8);
-
sector++;
-
- if (sector == sdebug_store_sectors)
- sector = 0; /* Force wrap */
-
- start_sec++;
ei_lba++;
- daddr += scsi_debug_sector_size;
- ppage_offset += sizeof(struct sd_dif_tuple);
+ dpage_offset += scsi_debug_sector_size;
}
-
- kunmap_atomic(daddr, KM_IRQ0);
+ diter.consumed = dpage_offset;
+ sg_miter_stop(&diter);
}
+ sg_miter_stop(&piter);
- kunmap_atomic(paddr, KM_IRQ1);
-
+ dif_copy_prot(SCpnt, start_sec, sectors, false);
dix_writes++;
return 0;
out:
dif_errors++;
- kunmap_atomic(daddr, KM_IRQ0);
- kunmap_atomic(paddr, KM_IRQ1);
+ sg_miter_stop(&diter);
+ sg_miter_stop(&piter);
return ret;
}
-static unsigned int map_state(sector_t lba, unsigned int *num)
+static unsigned long lba_to_map_index(sector_t lba)
+{
+ if (scsi_debug_unmap_alignment) {
+ lba += scsi_debug_unmap_granularity -
+ scsi_debug_unmap_alignment;
+ }
+ do_div(lba, scsi_debug_unmap_granularity);
+
+ return lba;
+}
+
+static sector_t map_index_to_lba(unsigned long index)
{
- unsigned int granularity, alignment, mapped;
- sector_t block, next, end;
+ sector_t lba = index * scsi_debug_unmap_granularity;
- granularity = scsi_debug_unmap_granularity;
- alignment = granularity - scsi_debug_unmap_alignment;
- block = lba + alignment;
- do_div(block, granularity);
+ if (scsi_debug_unmap_alignment) {
+ lba -= scsi_debug_unmap_granularity -
+ scsi_debug_unmap_alignment;
+ }
- mapped = test_bit(block, map_storep);
+ return lba;
+}
+
+static unsigned int map_state(sector_t lba, unsigned int *num)
+{
+ sector_t end;
+ unsigned int mapped;
+ unsigned long index;
+ unsigned long next;
+
+ index = lba_to_map_index(lba);
+ mapped = test_bit(index, map_storep);
if (mapped)
- next = find_next_zero_bit(map_storep, map_size, block);
+ next = find_next_zero_bit(map_storep, map_size, index);
else
- next = find_next_bit(map_storep, map_size, block);
+ next = find_next_bit(map_storep, map_size, index);
- end = next * granularity - scsi_debug_unmap_alignment;
+ end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next));
*num = end - lba;
return mapped;
@@ -1995,44 +2052,42 @@ static unsigned int map_state(sector_t lba, unsigned int *num)
static void map_region(sector_t lba, unsigned int len)
{
- unsigned int granularity, alignment;
sector_t end = lba + len;
- granularity = scsi_debug_unmap_granularity;
- alignment = granularity - scsi_debug_unmap_alignment;
-
while (lba < end) {
- sector_t block, rem;
-
- block = lba + alignment;
- rem = do_div(block, granularity);
+ unsigned long index = lba_to_map_index(lba);
- if (block < map_size)
- set_bit(block, map_storep);
+ if (index < map_size)
+ set_bit(index, map_storep);
- lba += granularity - rem;
+ lba = map_index_to_lba(index + 1);
}
}
static void unmap_region(sector_t lba, unsigned int len)
{
- unsigned int granularity, alignment;
sector_t end = lba + len;
- granularity = scsi_debug_unmap_granularity;
- alignment = granularity - scsi_debug_unmap_alignment;
-
while (lba < end) {
- sector_t block, rem;
-
- block = lba + alignment;
- rem = do_div(block, granularity);
-
- if (rem == 0 && lba + granularity <= end &&
- block < map_size)
- clear_bit(block, map_storep);
-
- lba += granularity - rem;
+ unsigned long index = lba_to_map_index(lba);
+
+ if (lba == map_index_to_lba(index) &&
+ lba + scsi_debug_unmap_granularity <= end &&
+ index < map_size) {
+ clear_bit(index, map_storep);
+ if (scsi_debug_lbprz) {
+ memset(fake_storep +
+ lba * scsi_debug_sector_size, 0,
+ scsi_debug_sector_size *
+ scsi_debug_unmap_granularity);
+ }
+ if (dif_storep) {
+ memset(dif_storep + lba, 0xff,
+ sizeof(*dif_storep) *
+ scsi_debug_unmap_granularity);
+ }
+ }
+ lba = map_index_to_lba(index + 1);
}
}
@@ -2047,19 +2102,21 @@ static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba,
if (ret)
return ret;
+ write_lock_irqsave(&atomic_rw, iflags);
+
/* DIX + T10 DIF */
if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) {
int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba);
if (prot_ret) {
+ write_unlock_irqrestore(&atomic_rw, iflags);
mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret);
return illegal_condition_result;
}
}
- write_lock_irqsave(&atomic_rw, iflags);
ret = do_device_access(SCpnt, devip, lba, num, 1);
- if (scsi_debug_unmap_granularity)
+ if (scsi_debug_lbp())
map_region(lba, num);
write_unlock_irqrestore(&atomic_rw, iflags);
if (-1 == ret)
@@ -2084,9 +2141,15 @@ static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba,
if (ret)
return ret;
+ if (num > scsi_debug_write_same_length) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
+ 0);
+ return check_condition_result;
+ }
+
write_lock_irqsave(&atomic_rw, iflags);
- if (unmap && scsi_debug_unmap_granularity) {
+ if (unmap && scsi_debug_lbp()) {
unmap_region(lba, num);
goto out;
}
@@ -2110,7 +2173,7 @@ static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba,
fake_storep + (lba * scsi_debug_sector_size),
scsi_debug_sector_size);
- if (scsi_debug_unmap_granularity)
+ if (scsi_debug_lbp())
map_region(lba, num);
out:
write_unlock_irqrestore(&atomic_rw, iflags);
@@ -2130,6 +2193,7 @@ static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
struct unmap_block_desc *desc;
unsigned int i, payload_len, descriptors;
int ret;
+ unsigned long iflags;
ret = check_readiness(scmd, 1, devip);
if (ret)
@@ -2151,6 +2215,8 @@ static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
desc = (void *)&buf[8];
+ write_lock_irqsave(&atomic_rw, iflags);
+
for (i = 0 ; i < descriptors ; i++) {
unsigned long long lba = get_unaligned_be64(&desc[i].lba);
unsigned int num = get_unaligned_be32(&desc[i].blocks);
@@ -2165,6 +2231,7 @@ static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
ret = 0;
out:
+ write_unlock_irqrestore(&atomic_rw, iflags);
kfree(buf);
return ret;
@@ -2197,7 +2264,7 @@ 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 */
@@ -2265,36 +2332,37 @@ static int resp_report_luns(struct scsi_cmnd * scp,
static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba,
unsigned int num, struct sdebug_dev_info *devip)
{
- int i, j, ret = -1;
+ int j;
unsigned char *kaddr, *buf;
unsigned int offset;
- struct scatterlist *sg;
struct scsi_data_buffer *sdb = scsi_in(scp);
+ struct sg_mapping_iter miter;
/* better not to use temporary buffer. */
buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC);
- if (!buf)
- return ret;
+ if (!buf) {
+ mk_sense_buffer(devip, NOT_READY,
+ LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
+ return check_condition_result;
+ }
scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp));
offset = 0;
- for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) {
- kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0);
- if (!kaddr)
- goto out;
+ sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents,
+ SG_MITER_ATOMIC | SG_MITER_TO_SG);
- for (j = 0; j < sg->length; j++)
- *(kaddr + sg->offset + j) ^= *(buf + offset + j);
+ while (sg_miter_next(&miter)) {
+ kaddr = miter.addr;
+ for (j = 0; j < miter.length; j++)
+ *(kaddr + j) ^= *(buf + offset + j);
- offset += sg->length;
- kunmap_atomic(kaddr, KM_USER0);
+ offset += miter.length;
}
- ret = 0;
-out:
+ sg_miter_stop(&miter);
kfree(buf);
- return ret;
+ return 0;
}
/* When timer goes off this function is called. */
@@ -2431,7 +2499,7 @@ static void scsi_debug_slave_destroy(struct scsi_device *sdp)
printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n",
sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
if (devip) {
- /* make this slot avaliable for re-use */
+ /* make this slot available for re-use */
devip->used = 0;
sdp->hostdata = NULL;
}
@@ -2626,8 +2694,8 @@ static void __init sdebug_build_parts(unsigned char *ramp,
/ sdebug_sectors_per;
pp->end_sector = (end_sec % sdebug_sectors_per) + 1;
- pp->start_sect = start_sec;
- pp->nr_sects = end_sec - start_sec + 1;
+ pp->start_sect = cpu_to_le32(start_sec);
+ pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1);
pp->sys_ind = 0x83; /* plain Linux partition */
}
}
@@ -2695,37 +2763,43 @@ static int schedule_resp(struct scsi_cmnd * cmnd,
/sys/bus/pseudo/drivers/scsi_debug directory is changed.
*/
module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR);
+module_param_named(ato, scsi_debug_ato, int, S_IRUGO);
+module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR);
module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR);
module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO);
+module_param_named(dif, scsi_debug_dif, int, S_IRUGO);
+module_param_named(dix, scsi_debug_dix, int, S_IRUGO);
module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR);
module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR);
module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR);
+module_param_named(guard, scsi_debug_guard, uint, 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);
module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR);
module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO);
module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO);
module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR);
+module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO);
module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR);
+module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO);
module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR);
+module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR);
module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO);
-module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR);
-module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int,
- S_IRUGO | S_IWUSR);
module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO);
-module_param_named(dix, scsi_debug_dix, int, S_IRUGO);
-module_param_named(dif, scsi_debug_dif, int, S_IRUGO);
-module_param_named(guard, scsi_debug_guard, int, S_IRUGO);
-module_param_named(ato, scsi_debug_ato, int, S_IRUGO);
-module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO);
-module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO);
-module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO);
+module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO);
+module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO);
module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO);
module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO);
-module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO);
-module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO);
-module_param_named(tpu, scsi_debug_tpu, int, S_IRUGO);
-module_param_named(tpws, scsi_debug_tpws, int, S_IRUGO);
+module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR);
+module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int,
+ S_IRUGO | S_IWUSR);
+module_param_named(write_same_length, scsi_debug_write_same_length, int,
+ S_IRUGO | S_IWUSR);
MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert");
MODULE_DESCRIPTION("SCSI debug adapter driver");
@@ -2733,36 +2807,41 @@ MODULE_LICENSE("GPL");
MODULE_VERSION(SCSI_DEBUG_VERSION);
MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)");
+MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)");
+MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)");
MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)");
MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)");
+MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)");
+MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)");
MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)");
MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)");
MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)");
+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))");
MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)");
MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))");
MODULE_PARM_DESC(num_parts, "number of partitions(def=0)");
MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)");
+MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)");
MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)");
+MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)");
MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])");
+MODULE_PARM_DESC(removable, "claim to have removable media (def=0)");
MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])");
-MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)");
-MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)");
MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)");
-MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)");
-MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)");
-MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)");
-MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)");
-MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)");
-MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)");
-MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)");
+MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)");
+MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)");
MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)");
MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)");
-MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)");
-MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)");
-MODULE_PARM_DESC(tpu, "enable TP, support UNMAP command (def=0)");
-MODULE_PARM_DESC(tpws, "enable TP, support WRITE SAME(16) with UNMAP bit (def=0)");
+MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)");
+MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)");
+MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)");
static char sdebug_info[256];
@@ -2778,31 +2857,27 @@ static const char * scsi_debug_info(struct Scsi_Host * shp)
/* scsi_debug_proc_info
* Used if the driver currently has no own support for /proc/scsi
*/
-static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
- int length, int inout)
+static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length)
{
- int len, pos, begin;
- int orig_length;
-
- orig_length = length;
+ char arr[16];
+ int opts;
+ int minLen = length > 15 ? 15 : length;
- if (inout == 1) {
- char arr[16];
- int minLen = length > 15 ? 15 : length;
+ if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
+ return -EACCES;
+ memcpy(arr, buffer, minLen);
+ arr[minLen] = '\0';
+ if (1 != sscanf(arr, "%d", &opts))
+ return -EINVAL;
+ scsi_debug_opts = opts;
+ if (scsi_debug_every_nth != 0)
+ scsi_debug_cmnd_count = 0;
+ return length;
+}
- if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
- return -EACCES;
- memcpy(arr, buffer, minLen);
- arr[minLen] = '\0';
- if (1 != sscanf(arr, "%d", &pos))
- return -EINVAL;
- scsi_debug_opts = pos;
- if (scsi_debug_every_nth != 0)
- scsi_debug_cmnd_count = 0;
- return length;
- }
- begin = 0;
- pos = len = sprintf(buffer, "scsi_debug adapter driver, version "
+static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host)
+{
+ seq_printf(m, "scsi_debug adapter driver, version "
"%s [%s]\n"
"num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, "
"every_nth=%d(curr:%d)\n"
@@ -2817,24 +2892,16 @@ static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **sta
scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads,
sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets,
num_host_resets, dix_reads, dix_writes, dif_errors);
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
- *start = buffer + (offset - begin); /* Start of wanted data */
- len -= (offset - begin);
- if (len > length)
- len = length;
- return len;
+ return 0;
}
-static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf)
+static ssize_t delay_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay);
}
-static ssize_t sdebug_delay_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t delay_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int delay;
char work[20];
@@ -2847,16 +2914,15 @@ static ssize_t sdebug_delay_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show,
- sdebug_delay_store);
+static DRIVER_ATTR_RW(delay);
-static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf)
+static ssize_t opts_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts);
}
-static ssize_t sdebug_opts_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t opts_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int opts;
char work[20];
@@ -2876,15 +2942,14 @@ opts_done:
scsi_debug_cmnd_count = 0;
return count;
}
-DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show,
- sdebug_opts_store);
+static DRIVER_ATTR_RW(opts);
-static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf)
+static ssize_t ptype_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype);
}
-static ssize_t sdebug_ptype_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t ptype_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -2894,14 +2959,14 @@ static ssize_t sdebug_ptype_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store);
+static DRIVER_ATTR_RW(ptype);
-static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf)
+static ssize_t dsense_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense);
}
-static ssize_t sdebug_dsense_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t dsense_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -2911,15 +2976,14 @@ static ssize_t sdebug_dsense_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show,
- sdebug_dsense_store);
+static DRIVER_ATTR_RW(dsense);
-static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf)
+static ssize_t fake_rw_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw);
}
-static ssize_t sdebug_fake_rw_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -2929,15 +2993,14 @@ static ssize_t sdebug_fake_rw_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show,
- sdebug_fake_rw_store);
+static DRIVER_ATTR_RW(fake_rw);
-static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf)
+static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0);
}
-static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -2947,15 +3010,14 @@ static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show,
- sdebug_no_lun_0_store);
+static DRIVER_ATTR_RW(no_lun_0);
-static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf)
+static ssize_t num_tgts_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts);
}
-static ssize_t sdebug_num_tgts_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -2966,27 +3028,26 @@ static ssize_t sdebug_num_tgts_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show,
- sdebug_num_tgts_store);
+static DRIVER_ATTR_RW(num_tgts);
-static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf)
+static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb);
}
-DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL);
+static DRIVER_ATTR_RO(dev_size_mb);
-static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf)
+static ssize_t num_parts_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts);
}
-DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL);
+static DRIVER_ATTR_RO(num_parts);
-static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf)
+static ssize_t every_nth_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth);
}
-static ssize_t sdebug_every_nth_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t every_nth_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int nth;
@@ -2997,15 +3058,14 @@ static ssize_t sdebug_every_nth_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show,
- sdebug_every_nth_store);
+static DRIVER_ATTR_RW(every_nth);
-static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf)
+static ssize_t max_luns_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns);
}
-static ssize_t sdebug_max_luns_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t max_luns_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -3016,15 +3076,14 @@ static ssize_t sdebug_max_luns_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show,
- sdebug_max_luns_store);
+static DRIVER_ATTR_RW(max_luns);
-static ssize_t sdebug_max_queue_show(struct device_driver * ddp, char * buf)
+static ssize_t max_queue_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue);
}
-static ssize_t sdebug_max_queue_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t max_queue_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -3035,27 +3094,26 @@ static ssize_t sdebug_max_queue_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(max_queue, S_IRUGO | S_IWUSR, sdebug_max_queue_show,
- sdebug_max_queue_store);
+static DRIVER_ATTR_RW(max_queue);
-static ssize_t sdebug_no_uld_show(struct device_driver * ddp, char * buf)
+static ssize_t no_uld_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld);
}
-DRIVER_ATTR(no_uld, S_IRUGO, sdebug_no_uld_show, NULL);
+static DRIVER_ATTR_RO(no_uld);
-static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf)
+static ssize_t scsi_level_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level);
}
-DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL);
+static DRIVER_ATTR_RO(scsi_level);
-static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf)
+static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb);
}
-static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -3068,16 +3126,15 @@ static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show,
- sdebug_virtual_gb_store);
+static DRIVER_ATTR_RW(virtual_gb);
-static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf)
+static ssize_t add_host_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host);
}
-static ssize_t sdebug_add_host_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t add_host_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int delta_hosts;
@@ -3094,16 +3151,14 @@ static ssize_t sdebug_add_host_store(struct device_driver * ddp,
}
return count;
}
-DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show,
- sdebug_add_host_store);
+static DRIVER_ATTR_RW(add_host);
-static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp,
- char * buf)
+static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno);
}
-static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp,
- const char * buf, size_t count)
+static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf,
+ size_t count)
{
int n;
@@ -3113,44 +3168,43 @@ static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp,
}
return -EINVAL;
}
-DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show,
- sdebug_vpd_use_hostno_store);
+static DRIVER_ATTR_RW(vpd_use_hostno);
-static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf)
+static ssize_t sector_size_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size);
}
-DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL);
+static DRIVER_ATTR_RO(sector_size);
-static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf)
+static ssize_t dix_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix);
}
-DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL);
+static DRIVER_ATTR_RO(dix);
-static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf)
+static ssize_t dif_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif);
}
-DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL);
+static DRIVER_ATTR_RO(dif);
-static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf)
+static ssize_t guard_show(struct device_driver *ddp, char *buf)
{
- return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard);
+ return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard);
}
-DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL);
+static DRIVER_ATTR_RO(guard);
-static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf)
+static ssize_t ato_show(struct device_driver *ddp, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato);
}
-DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL);
+static DRIVER_ATTR_RO(ato);
-static ssize_t sdebug_map_show(struct device_driver *ddp, char *buf)
+static ssize_t map_show(struct device_driver *ddp, char *buf)
{
ssize_t count;
- if (scsi_debug_tpu == 0 && scsi_debug_tpws == 0)
+ if (!scsi_debug_lbp())
return scnprintf(buf, PAGE_SIZE, "0-%u\n",
sdebug_store_sectors);
@@ -3161,73 +3215,62 @@ static ssize_t sdebug_map_show(struct device_driver *ddp, char *buf)
return count;
}
-DRIVER_ATTR(map, S_IRUGO, sdebug_map_show, NULL);
+static DRIVER_ATTR_RO(map);
+static ssize_t removable_show(struct device_driver *ddp, char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0);
+}
+static ssize_t removable_store(struct device_driver *ddp, const char *buf,
+ size_t count)
+{
+ int n;
+
+ if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
+ scsi_debug_removable = (n > 0);
+ return count;
+ }
+ return -EINVAL;
+}
+static DRIVER_ATTR_RW(removable);
-/* Note: The following function creates attribute files in the
+/* Note: The following array creates attribute files in the
/sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these
files (over those found in the /sys/module/scsi_debug/parameters
directory) is that auxiliary actions can be triggered when an attribute
is changed. For example see: sdebug_add_host_store() above.
*/
-static int do_create_driverfs_files(void)
-{
- int ret;
- ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_queue);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_uld);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato);
- ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_map);
- return ret;
-}
+static struct attribute *sdebug_drv_attrs[] = {
+ &driver_attr_delay.attr,
+ &driver_attr_opts.attr,
+ &driver_attr_ptype.attr,
+ &driver_attr_dsense.attr,
+ &driver_attr_fake_rw.attr,
+ &driver_attr_no_lun_0.attr,
+ &driver_attr_num_tgts.attr,
+ &driver_attr_dev_size_mb.attr,
+ &driver_attr_num_parts.attr,
+ &driver_attr_every_nth.attr,
+ &driver_attr_max_luns.attr,
+ &driver_attr_max_queue.attr,
+ &driver_attr_no_uld.attr,
+ &driver_attr_scsi_level.attr,
+ &driver_attr_virtual_gb.attr,
+ &driver_attr_add_host.attr,
+ &driver_attr_vpd_use_hostno.attr,
+ &driver_attr_sector_size.attr,
+ &driver_attr_dix.attr,
+ &driver_attr_dif.attr,
+ &driver_attr_guard.attr,
+ &driver_attr_ato.attr,
+ &driver_attr_map.attr,
+ &driver_attr_removable.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(sdebug_drv);
-static void do_remove_driverfs_files(void)
-{
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_map);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_uld);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_queue);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay);
- driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host);
-}
-
-struct device *pseudo_primary;
+static struct device *pseudo_primary;
static int __init scsi_debug_init(void)
{
@@ -3315,7 +3358,7 @@ static int __init scsi_debug_init(void)
if (scsi_debug_num_parts > 0)
sdebug_build_parts(fake_storep, sz);
- if (scsi_debug_dif) {
+ if (scsi_debug_dix) {
int dif_size;
dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple);
@@ -3333,10 +3376,8 @@ static int __init scsi_debug_init(void)
memset(dif_storep, 0xff, dif_size);
}
- /* Thin Provisioning */
- if (scsi_debug_tpu || scsi_debug_tpws) {
- unsigned int map_bytes;
-
+ /* Logical Block Provisioning */
+ if (scsi_debug_lbp()) {
scsi_debug_unmap_max_blocks =
clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU);
@@ -3347,16 +3388,16 @@ static int __init scsi_debug_init(void)
clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU);
if (scsi_debug_unmap_alignment &&
- scsi_debug_unmap_granularity < scsi_debug_unmap_alignment) {
+ scsi_debug_unmap_granularity <=
+ scsi_debug_unmap_alignment) {
printk(KERN_ERR
- "%s: ERR: unmap_granularity < unmap_alignment\n",
+ "%s: ERR: unmap_granularity <= unmap_alignment\n",
__func__);
return -EINVAL;
}
- map_size = (sdebug_store_sectors / scsi_debug_unmap_granularity);
- map_bytes = map_size >> 3;
- map_storep = vmalloc(map_bytes);
+ map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1;
+ map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long));
printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n",
map_size);
@@ -3367,7 +3408,7 @@ static int __init scsi_debug_init(void)
goto free_vm;
}
- memset(map_storep, 0x0, map_bytes);
+ bitmap_zero(map_storep, map_size);
/* Map first 1KB for partition table */
if (scsi_debug_num_parts)
@@ -3392,12 +3433,6 @@ static int __init scsi_debug_init(void)
ret);
goto bus_unreg;
}
- ret = do_create_driverfs_files();
- if (ret < 0) {
- printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n",
- ret);
- goto del_files;
- }
init_all_queued();
@@ -3418,9 +3453,6 @@ static int __init scsi_debug_init(void)
}
return 0;
-del_files:
- do_remove_driverfs_files();
- driver_unregister(&sdebug_driverfs_driver);
bus_unreg:
bus_unregister(&pseudo_lld_bus);
dev_unreg:
@@ -3442,7 +3474,6 @@ static void __exit scsi_debug_exit(void)
stop_all_queued();
for (; k; k--)
sdebug_remove_adapter();
- do_remove_driverfs_files();
driver_unregister(&sdebug_driverfs_driver);
bus_unregister(&pseudo_lld_bus);
root_device_unregister(pseudo_primary);
@@ -3553,6 +3584,7 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
int inj_transport = 0;
int inj_dif = 0;
int inj_dix = 0;
+ int inj_short = 0;
int delay_override = 0;
int unmap = 0;
@@ -3587,6 +3619,9 @@ 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)
@@ -3595,6 +3630,8 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
inj_dif = 1; /* to reads and writes below */
else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts)
inj_dix = 1; /* to reads and writes below */
+ else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & scsi_debug_opts)
+ inj_short = 1;
}
if (devip->wlun) {
@@ -3664,7 +3701,7 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
errsts = resp_readcap16(SCpnt, devip);
else if (cmd[1] == SAI_GET_LBA_STATUS) {
- if (scsi_debug_tpu == 0 && scsi_debug_tpws == 0) {
+ if (scsi_debug_lbp() == 0) {
mk_sense_buffer(devip, ILLEGAL_REQUEST,
INVALID_COMMAND_OPCODE, 0);
errsts = check_condition_result;
@@ -3711,6 +3748,10 @@ read:
if (scsi_debug_fake_rw)
break;
get_data_transfer_info(cmd, &lba, &num, &ei_lba);
+
+ if (inj_short)
+ num /= 2;
+
errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
if (inj_recovered && (0 == errsts)) {
mk_sense_buffer(devip, RECOVERED_ERROR,
@@ -3775,8 +3816,10 @@ write:
}
break;
case WRITE_SAME_16:
+ case WRITE_SAME:
if (cmd[1] & 0x8) {
- if (scsi_debug_tpws == 0) {
+ if ((*cmd == WRITE_SAME_16 && scsi_debug_lbpws == 0) ||
+ (*cmd == WRITE_SAME && scsi_debug_lbpws10 == 0)) {
mk_sense_buffer(devip, ILLEGAL_REQUEST,
INVALID_FIELD_IN_CDB, 0);
errsts = check_condition_result;
@@ -3785,8 +3828,6 @@ write:
}
if (errsts)
break;
- /* fall through */
- case WRITE_SAME:
errsts = check_readiness(SCpnt, 0, devip);
if (errsts)
break;
@@ -3798,7 +3839,7 @@ write:
if (errsts)
break;
- if (scsi_debug_unmap_max_desc == 0 || scsi_debug_tpu == 0) {
+ if (scsi_debug_unmap_max_desc == 0 || scsi_debug_lbpu == 0) {
mk_sense_buffer(devip, ILLEGAL_REQUEST,
INVALID_COMMAND_OPCODE, 0);
errsts = check_condition_result;
@@ -3888,7 +3929,8 @@ write:
static DEF_SCSI_QCMD(scsi_debug_queuecommand)
static struct scsi_host_template sdebug_driver_template = {
- .proc_info = scsi_debug_proc_info,
+ .show_info = scsi_debug_show_info,
+ .write_info = scsi_debug_write_info,
.proc_name = sdebug_proc_name,
.name = "SCSI DEBUG",
.info = scsi_debug_info,
@@ -3921,6 +3963,8 @@ static int sdebug_driver_probe(struct device * dev)
sdbg_host = to_sdebug_host(dev);
sdebug_driver_template.can_queue = scsi_debug_max_queue;
+ if (scsi_debug_clustering)
+ sdebug_driver_template.use_clustering = ENABLE_CLUSTERING;
hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host));
if (NULL == hpnt) {
printk(KERN_ERR "%s: scsi_register failed\n", __func__);
@@ -4028,4 +4072,5 @@ static struct bus_type pseudo_lld_bus = {
.match = pseudo_lld_bus_match,
.probe = sdebug_driver_probe,
.remove = sdebug_driver_remove,
+ .drv_groups = sdebug_drv_groups,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 21:54:24 +0000