#include <linux/moduleparam.h>
#include <linux/scatterlist.h>
#include <linux/blkdev.h>
+#include <linux/crc-t10dif.h>
+
+#include <net/checksum.h>
+
+#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_eh.h>
+#include <scsi/scsi_dbg.h>
-#include <linux/stat.h>
-
+#include "sd.h"
#include "scsi_logging.h"
#define SCSI_DEBUG_VERSION "1.81"
#define PARAMETER_LIST_LENGTH_ERR 0x1a
#define INVALID_OPCODE 0x20
#define ADDR_OUT_OF_RANGE 0x21
+#define INVALID_COMMAND_OPCODE 0x20
#define INVALID_FIELD_IN_CDB 0x24
#define INVALID_FIELD_IN_PARAM_LIST 0x26
#define POWERON_RESET 0x29
#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_LOWEST_ALIGNED 0
+#define DEF_UNMAP_MAX_BLOCKS 0
+#define DEF_UNMAP_MAX_DESC 0
+#define DEF_UNMAP_GRANULARITY 0
+#define DEF_UNMAP_ALIGNMENT 0
/* bit mask values for scsi_debug_opts */
#define SCSI_DEBUG_OPT_NOISE 1
#define SCSI_DEBUG_OPT_TIMEOUT 4
#define SCSI_DEBUG_OPT_RECOVERED_ERR 8
#define SCSI_DEBUG_OPT_TRANSPORT_ERR 16
+#define SCSI_DEBUG_OPT_DIF_ERR 32
+#define SCSI_DEBUG_OPT_DIX_ERR 64
/* 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
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_unmap_max_desc = DEF_UNMAP_MAX_DESC;
+static int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
+static int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
+static int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT;
static int scsi_debug_cmnd_count = 0;
#define SDEBUG_SENSE_LEN 32
#define SCSI_DEBUG_CANQUEUE 255
-#define SCSI_DEBUG_MAX_CMD_LEN 16
+#define SCSI_DEBUG_MAX_CMD_LEN 32
struct sdebug_dev_info {
struct list_head dev_list;
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 void *map_storep; /* provisioning map */
+static unsigned long map_size;
static int num_aborts = 0;
static int num_dev_resets = 0;
static int num_bus_resets = 0;
static int num_host_resets = 0;
+static int dix_writes;
+static int dix_reads;
+static int dif_errors;
static DEFINE_SPINLOCK(queued_arr_lock);
static DEFINE_RWLOCK(atomic_rw);
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,
static const int check_condition_result =
(DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
+static const int illegal_condition_result =
+ (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
+
static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
0, 0, 0x2, 0x4b};
static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
}
static void get_data_transfer_info(unsigned char *cmd,
- unsigned long long *lba, unsigned int *num)
+ unsigned long long *lba, unsigned int *num,
+ u32 *ei_lba)
{
+ *ei_lba = 0;
+
switch (*cmd) {
+ case VARIABLE_LENGTH_CMD:
+ *lba = (u64)cmd[19] | (u64)cmd[18] << 8 |
+ (u64)cmd[17] << 16 | (u64)cmd[16] << 24 |
+ (u64)cmd[15] << 32 | (u64)cmd[14] << 40 |
+ (u64)cmd[13] << 48 | (u64)cmd[12] << 56;
+
+ *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 |
+ (u32)cmd[21] << 16 | (u32)cmd[20] << 24;
+
+ *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 |
+ (u32)cmd[28] << 24;
+ break;
+
+ case WRITE_SAME_16:
case WRITE_16:
case READ_16:
*lba = (u64)cmd[9] | (u64)cmd[8] << 8 |
*num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 |
(u32)cmd[6] << 24;
break;
+ case WRITE_SAME:
case WRITE_10:
case READ_10:
case XDWRITEREAD_10:
}
+/* Block limits VPD page (SBC-3) */
static unsigned char vpdb0_data[] = {
- /* from 4th byte */ 0,0,0,4,
- 0,0,0x4,0,
- 0,0,0,64,
+ /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
};
static int inquiry_evpd_b0(unsigned char * arr)
{
+ unsigned int gran;
+
memcpy(arr, vpdb0_data, sizeof(vpdb0_data));
+ gran = 1 << scsi_debug_physblk_exp;
+ arr[2] = (gran >> 8) & 0xff;
+ arr[3] = gran & 0xff;
if (sdebug_store_sectors > 0x400) {
arr[4] = (sdebug_store_sectors >> 24) & 0xff;
arr[5] = (sdebug_store_sectors >> 16) & 0xff;
arr[6] = (sdebug_store_sectors >> 8) & 0xff;
arr[7] = sdebug_store_sectors & 0xff;
}
+
+ if (scsi_debug_unmap_max_desc) {
+ unsigned int blocks;
+
+ if (scsi_debug_unmap_max_blocks)
+ blocks = scsi_debug_unmap_max_blocks;
+ else
+ blocks = 0xffffffff;
+
+ put_unaligned_be32(blocks, &arr[16]);
+ put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]);
+ }
+
+ if (scsi_debug_unmap_alignment) {
+ put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]);
+ arr[28] |= 0x80; /* UGAVALID */
+ }
+
+ if (scsi_debug_unmap_granularity) {
+ put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]);
+ return 0x3c; /* Mandatory page length for thin provisioning */
+ }
+
return sizeof(vpdb0_data);
}
+/* Block device characteristics VPD page (SBC-3) */
static int inquiry_evpd_b1(unsigned char *arr)
{
memset(arr, 0, 0x3c);
arr[0] = 0;
- arr[1] = 1;
+ arr[1] = 1; /* non rotating medium (e.g. solid state) */
+ arr[2] = 0;
+ arr[3] = 5; /* less than 1.8" */
return 0x3c;
}
} else if (0x86 == cmd[2]) { /* extended inquiry */
arr[1] = cmd[2]; /*sanity */
arr[3] = 0x3c; /* number of following entries */
- arr[4] = 0x0; /* no protection stuff */
+ if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION)
+ arr[4] = 0x4; /* SPT: GRD_CHK:1 */
+ else if (scsi_debug_dif)
+ arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */
+ else
+ arr[4] = 0x0; /* no protection stuff */
arr[5] = 0x7; /* head of q, ordered + simple q's */
} else if (0x87 == cmd[2]) { /* mode page policy */
arr[1] = cmd[2]; /*sanity */
arr[2] = scsi_debug_scsi_level;
arr[3] = 2; /* response_data_format==2 */
arr[4] = SDEBUG_LONG_INQ_SZ - 5;
+ arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */
if (0 == scsi_debug_vpd_use_hostno)
arr[5] = 0x10; /* claim: implicit TGPS */
arr[6] = 0x10; /* claim: MultiP */
static sector_t get_sdebug_capacity(void)
{
if (scsi_debug_virtual_gb > 0)
- return 2048 * 1024 * scsi_debug_virtual_gb;
+ return 2048 * 1024 * (sector_t)scsi_debug_virtual_gb;
else
return sdebug_store_sectors;
}
arr[9] = (scsi_debug_sector_size >> 16) & 0xff;
arr[10] = (scsi_debug_sector_size >> 8) & 0xff;
arr[11] = scsi_debug_sector_size & 0xff;
+ arr[13] = scsi_debug_physblk_exp & 0xf;
+ arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f;
+
+ if (scsi_debug_unmap_granularity)
+ arr[14] |= 0x80; /* TPE */
+
+ arr[15] = scsi_debug_lowest_aligned & 0xff;
+
+ if (scsi_debug_dif) {
+ arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */
+ arr[12] |= 1; /* PROT_EN */
+ }
+
return fill_from_dev_buffer(scp, arr,
min(alloc_len, SDEBUG_READCAP16_ARR_SZ));
}
ctrl_m_pg[2] |= 0x4;
else
ctrl_m_pg[2] &= ~0x4;
+
+ if (scsi_debug_ato)
+ ctrl_m_pg[5] |= 0x80; /* ATO=1 */
+
memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg));
if (1 == pcontrol)
memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg));
return ret;
}
+static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
+ unsigned int sectors, u32 ei_lba)
+{
+ unsigned int i, resid;
+ struct scatterlist *psgl;
+ struct sd_dif_tuple *sdt;
+ sector_t sector;
+ sector_t tmp_sec = start_sec;
+ void *paddr;
+
+ start_sec = do_div(tmp_sec, sdebug_store_sectors);
+
+ sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec));
+
+ for (i = 0 ; i < sectors ; i++) {
+ u16 csum;
+
+ if (sdt[i].app_tag == 0xffff)
+ continue;
+
+ sector = start_sec + i;
+
+ 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();
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ ei_lba++;
+ }
+
+ resid = sectors * 8; /* Bytes of protection data to copy into sgl */
+ sector = 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;
+ memcpy(paddr, dif_storep + dif_offset(sector), len);
+
+ sector += len >> 3;
+ if (sector >= sdebug_store_sectors) {
+ /* Force wrap */
+ tmp_sec = sector;
+ sector = do_div(tmp_sec, sdebug_store_sectors);
+ }
+ resid -= len;
+ kunmap_atomic(paddr, KM_IRQ0);
+ }
+
+ dix_reads++;
+
+ return 0;
+}
+
static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba,
- unsigned int num, struct sdebug_dev_info *devip)
+ unsigned int num, struct sdebug_dev_info *devip,
+ u32 ei_lba)
{
unsigned long iflags;
int ret;
}
return check_condition_result;
}
+
+ /* 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) {
+ 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;
}
+void dump_sector(unsigned char *buf, int len)
+{
+ int i, j;
+
+ printk(KERN_ERR ">>> Sector Dump <<<\n");
+
+ for (i = 0 ; i < len ; i += 16) {
+ printk(KERN_ERR "%04d: ", i);
+
+ for (j = 0 ; j < 16 ; j++) {
+ unsigned char c = buf[i+j];
+ if (c >= 0x20 && c < 0x7e)
+ printk(" %c ", buf[i+j]);
+ else
+ printk("%02x ", buf[i+j]);
+ }
+
+ printk("\n");
+ }
+}
+
+static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
+ unsigned int sectors, u32 ei_lba)
+{
+ int i, j, 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;
+ int ppage_offset;
+ unsigned short csum;
+
+ sector = do_div(tmp_sec, sdebug_store_sectors);
+
+ 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) {
+
+ /* If we're at the end of the current
+ * protection 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 (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;
+ }
+
+ 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;
+ 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);
+ }
+
+ kunmap_atomic(daddr, KM_IRQ0);
+ }
+
+ kunmap_atomic(paddr, KM_IRQ1);
+
+ dix_writes++;
+
+ return 0;
+
+out:
+ dif_errors++;
+ kunmap_atomic(daddr, KM_IRQ0);
+ kunmap_atomic(paddr, KM_IRQ1);
+ return ret;
+}
+
+static unsigned int map_state(sector_t lba, unsigned int *num)
+{
+ unsigned int granularity, alignment, mapped;
+ sector_t block, next, end;
+
+ granularity = scsi_debug_unmap_granularity;
+ alignment = granularity - scsi_debug_unmap_alignment;
+ block = lba + alignment;
+ do_div(block, granularity);
+
+ mapped = test_bit(block, map_storep);
+
+ if (mapped)
+ next = find_next_zero_bit(map_storep, map_size, block);
+ else
+ next = find_next_bit(map_storep, map_size, block);
+
+ end = next * granularity - scsi_debug_unmap_alignment;
+ *num = end - lba;
+
+ return mapped;
+}
+
+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);
+
+ set_bit(block, map_storep);
+
+ lba += granularity - rem;
+ }
+}
+
+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)
+ clear_bit(block, map_storep);
+
+ lba += granularity - rem;
+ }
+}
+
static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba,
- unsigned int num, struct sdebug_dev_info *devip)
+ unsigned int num, struct sdebug_dev_info *devip,
+ u32 ei_lba)
{
unsigned long iflags;
int ret;
if (ret)
return ret;
+ /* 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) {
+ 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)
+ map_region(lba, num);
write_unlock_irqrestore(&atomic_rw, iflags);
if (-1 == ret)
return (DID_ERROR << 16);
(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, "
" IO sent=%d bytes\n", num * scsi_debug_sector_size, ret);
+
+ return 0;
+}
+
+static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba,
+ unsigned int num, struct sdebug_dev_info *devip,
+ u32 ei_lba, unsigned int unmap)
+{
+ unsigned long iflags;
+ unsigned long long i;
+ int ret;
+
+ ret = check_device_access_params(devip, lba, num);
+ if (ret)
+ return ret;
+
+ write_lock_irqsave(&atomic_rw, iflags);
+
+ if (unmap && scsi_debug_unmap_granularity) {
+ unmap_region(lba, num);
+ goto out;
+ }
+
+ /* Else fetch one logical block */
+ ret = fetch_to_dev_buffer(scmd,
+ fake_storep + (lba * scsi_debug_sector_size),
+ scsi_debug_sector_size);
+
+ if (-1 == ret) {
+ write_unlock_irqrestore(&atomic_rw, iflags);
+ return (DID_ERROR << 16);
+ } else if ((ret < (num * scsi_debug_sector_size)) &&
+ (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
+ printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, "
+ " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret);
+
+ /* Copy first sector to remaining blocks */
+ for (i = 1 ; i < num ; i++)
+ memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size),
+ fake_storep + (lba * scsi_debug_sector_size),
+ scsi_debug_sector_size);
+
+ if (scsi_debug_unmap_granularity)
+ map_region(lba, num);
+out:
+ write_unlock_irqrestore(&atomic_rw, iflags);
+
return 0;
}
+struct unmap_block_desc {
+ __be64 lba;
+ __be32 blocks;
+ __be32 __reserved;
+};
+
+static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
+{
+ unsigned char *buf;
+ struct unmap_block_desc *desc;
+ unsigned int i, payload_len, descriptors;
+ int ret;
+
+ ret = check_readiness(scmd, 1, devip);
+ if (ret)
+ return ret;
+
+ payload_len = get_unaligned_be16(&scmd->cmnd[7]);
+ BUG_ON(scsi_bufflen(scmd) != payload_len);
+
+ descriptors = (payload_len - 8) / 16;
+
+ buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC);
+ if (!buf)
+ return check_condition_result;
+
+ scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
+
+ BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2);
+ BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16);
+
+ desc = (void *)&buf[8];
+
+ 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);
+
+ ret = check_device_access_params(devip, lba, num);
+ if (ret)
+ goto out;
+
+ unmap_region(lba, num);
+ }
+
+ ret = 0;
+
+out:
+ kfree(buf);
+
+ return ret;
+}
+
+#define SDEBUG_GET_LBA_STATUS_LEN 32
+
+static int resp_get_lba_status(struct scsi_cmnd * scmd,
+ struct sdebug_dev_info * devip)
+{
+ unsigned long long lba;
+ unsigned int alloc_len, mapped, num;
+ unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN];
+ int ret;
+
+ ret = check_readiness(scmd, 1, devip);
+ if (ret)
+ return ret;
+
+ lba = get_unaligned_be64(&scmd->cmnd[2]);
+ alloc_len = get_unaligned_be32(&scmd->cmnd[10]);
+
+ if (alloc_len < 24)
+ return 0;
+
+ ret = check_device_access_params(devip, lba, 1);
+ if (ret)
+ return ret;
+
+ mapped = map_state(lba, &num);
+
+ memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN);
+ put_unaligned_be32(16, &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 */
+
+ return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN);
+}
+
#define SDEBUG_RLUN_ARR_SZ 256
static int resp_report_luns(struct scsi_cmnd * scp,
open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC);
if (!open_devip) {
printk(KERN_ERR "%s: out of memory at line %d\n",
- __FUNCTION__, __LINE__);
+ __func__, __LINE__);
return NULL;
}
}
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(lowest_aligned, scsi_debug_lowest_aligned, 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_AUTHOR("Eric Youngdale + Douglas Gilbert");
MODULE_DESCRIPTION("SCSI debug adapter driver");
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, "hardware sector size in bytes (def=512)");
-
+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(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_max_blocks, "max # of blocks can be unmapped in one cmd (def=0)");
+MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=0)");
+MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=0)");
+MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)");
static char sdebug_info[256];
"delay=%d, max_luns=%d, scsi_level=%d\n"
"sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n"
"number of aborts=%d, device_reset=%d, bus_resets=%d, "
- "host_resets=%d\n",
+ "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n",
SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts,
scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth,
scsi_debug_cmnd_count, scsi_debug_delay,
scsi_debug_max_luns, scsi_debug_scsi_level,
scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads,
sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets,
- num_host_resets);
+ num_host_resets, dix_reads, dix_writes, dif_errors);
if (pos < offset) {
len = 0;
begin = pos;
}
DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL);
+static ssize_t sdebug_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 ssize_t sdebug_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 ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard);
+}
+DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL);
+
+static ssize_t sdebug_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 ssize_t sdebug_map_show(struct device_driver *ddp, char *buf)
+{
+ ssize_t count;
+
+ if (scsi_debug_unmap_granularity == 0)
+ return scnprintf(buf, PAGE_SIZE, "0-%u\n",
+ sdebug_store_sectors);
+
+ count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size);
+
+ buf[count++] = '\n';
+ buf[count++] = 0;
+
+ return count;
+}
+DRIVER_ATTR(map, S_IRUGO, sdebug_map_show, NULL);
+
+
/* Note: The following function 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
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 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);
}
static struct device pseudo_primary = {
- .bus_id = "pseudo_0",
+ .init_name = "pseudo_0",
.release = pseudo_0_release,
};
case 4096:
break;
default:
- printk(KERN_ERR "scsi_debug_init: invalid sector_size %u\n",
+ printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n",
scsi_debug_sector_size);
return -EINVAL;
}
+ switch (scsi_debug_dif) {
+
+ case SD_DIF_TYPE0_PROTECTION:
+ case SD_DIF_TYPE1_PROTECTION:
+ case SD_DIF_TYPE2_PROTECTION:
+ case SD_DIF_TYPE3_PROTECTION:
+ break;
+
+ default:
+ printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n");
+ return -EINVAL;
+ }
+
+ if (scsi_debug_guard > 1) {
+ printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n");
+ return -EINVAL;
+ }
+
+ if (scsi_debug_ato > 1) {
+ printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n");
+ return -EINVAL;
+ }
+
+ if (scsi_debug_physblk_exp > 15) {
+ printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n",
+ scsi_debug_physblk_exp);
+ return -EINVAL;
+ }
+
+ if (scsi_debug_lowest_aligned > 0x3fff) {
+ printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n",
+ scsi_debug_lowest_aligned);
+ return -EINVAL;
+ }
+
if (scsi_debug_dev_size_mb < 1)
scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */
sz = (unsigned long)scsi_debug_dev_size_mb * 1048576;
if (scsi_debug_num_parts > 0)
sdebug_build_parts(fake_storep, sz);
+ if (scsi_debug_dif) {
+ int dif_size;
+
+ dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple);
+ dif_storep = vmalloc(dif_size);
+
+ printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n",
+ dif_size, dif_storep);
+
+ if (dif_storep == NULL) {
+ printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n");
+ ret = -ENOMEM;
+ goto free_vm;
+ }
+
+ memset(dif_storep, 0xff, dif_size);
+ }
+
+ if (scsi_debug_unmap_granularity) {
+ unsigned int map_bytes;
+
+ if (scsi_debug_unmap_granularity < scsi_debug_unmap_alignment) {
+ printk(KERN_ERR
+ "%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);
+
+ printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n",
+ map_size);
+
+ if (map_storep == NULL) {
+ printk(KERN_ERR "scsi_debug_init: out of mem. (MAP)\n");
+ ret = -ENOMEM;
+ goto free_vm;
+ }
+
+ memset(map_storep, 0x0, map_bytes);
+
+ /* Map first 1KB for partition table */
+ if (scsi_debug_num_parts)
+ map_region(0, 2);
+ }
+
ret = device_register(&pseudo_primary);
if (ret < 0) {
printk(KERN_WARNING "scsi_debug: device_register error: %d\n",
dev_unreg:
device_unregister(&pseudo_primary);
free_vm:
+ if (map_storep)
+ vfree(map_storep);
+ if (dif_storep)
+ vfree(dif_storep);
vfree(fake_storep);
return ret;
bus_unregister(&pseudo_lld_bus);
device_unregister(&pseudo_primary);
+ if (dif_storep)
+ vfree(dif_storep);
+
vfree(fake_storep);
}
sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL);
if (NULL == sdbg_host) {
printk(KERN_ERR "%s: out of memory at line %d\n",
- __FUNCTION__, __LINE__);
+ __func__, __LINE__);
return -ENOMEM;
}
sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL);
if (!sdbg_devinfo) {
printk(KERN_ERR "%s: out of memory at line %d\n",
- __FUNCTION__, __LINE__);
+ __func__, __LINE__);
error = -ENOMEM;
goto clean;
}
sdbg_host->dev.bus = &pseudo_lld_bus;
sdbg_host->dev.parent = &pseudo_primary;
sdbg_host->dev.release = &sdebug_release_adapter;
- sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host);
+ dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host);
error = device_register(&sdbg_host->dev);
int len, k;
unsigned int num;
unsigned long long lba;
+ u32 ei_lba;
int errsts = 0;
int target = SCpnt->device->id;
struct sdebug_dev_info *devip = NULL;
int inj_recovered = 0;
int inj_transport = 0;
+ int inj_dif = 0;
+ int inj_dix = 0;
int delay_override = 0;
+ int unmap = 0;
scsi_set_resid(SCpnt, 0);
if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) {
inj_recovered = 1; /* to reads and writes below */
else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts)
inj_transport = 1; /* to reads and writes below */
+ else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts)
+ 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 */
}
if (devip->wlun) {
errsts = resp_readcap(SCpnt, devip);
break;
case SERVICE_ACTION_IN:
- if (SAI_READ_CAPACITY_16 != cmd[1]) {
+ if (cmd[1] == SAI_READ_CAPACITY_16)
+ errsts = resp_readcap16(SCpnt, devip);
+ else if (cmd[1] == SAI_GET_LBA_STATUS) {
+
+ if (scsi_debug_unmap_max_desc == 0) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST,
+ INVALID_COMMAND_OPCODE, 0);
+ errsts = check_condition_result;
+ } else
+ errsts = resp_get_lba_status(SCpnt, devip);
+ } else {
mk_sense_buffer(devip, ILLEGAL_REQUEST,
INVALID_OPCODE, 0);
errsts = check_condition_result;
- break;
}
- errsts = resp_readcap16(SCpnt, devip);
break;
case MAINTENANCE_IN:
if (MI_REPORT_TARGET_PGS != cmd[1]) {
case READ_16:
case READ_12:
case READ_10:
+ /* READ{10,12,16} and DIF Type 2 are natural enemies */
+ if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
+ cmd[1] & 0xe0) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST,
+ INVALID_COMMAND_OPCODE, 0);
+ errsts = check_condition_result;
+ break;
+ }
+
+ if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION ||
+ scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) &&
+ (cmd[1] & 0xe0) == 0)
+ printk(KERN_ERR "Unprotected RD/WR to DIF device\n");
+
+ /* fall through */
case READ_6:
+read:
errsts = check_readiness(SCpnt, 0, devip);
if (errsts)
break;
if (scsi_debug_fake_rw)
break;
- get_data_transfer_info(cmd, &lba, &num);
- errsts = resp_read(SCpnt, lba, num, devip);
+ get_data_transfer_info(cmd, &lba, &num, &ei_lba);
+ errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
if (inj_recovered && (0 == errsts)) {
mk_sense_buffer(devip, RECOVERED_ERROR,
THRESHOLD_EXCEEDED, 0);
mk_sense_buffer(devip, ABORTED_COMMAND,
TRANSPORT_PROBLEM, ACK_NAK_TO);
errsts = check_condition_result;
+ } else if (inj_dif && (0 == errsts)) {
+ mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1);
+ errsts = illegal_condition_result;
+ } else if (inj_dix && (0 == errsts)) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1);
+ errsts = illegal_condition_result;
}
break;
case REPORT_LUNS: /* mandatory, ignore unit attention */
case WRITE_16:
case WRITE_12:
case WRITE_10:
+ /* WRITE{10,12,16} and DIF Type 2 are natural enemies */
+ if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
+ cmd[1] & 0xe0) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST,
+ INVALID_COMMAND_OPCODE, 0);
+ errsts = check_condition_result;
+ break;
+ }
+
+ if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION ||
+ scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) &&
+ (cmd[1] & 0xe0) == 0)
+ printk(KERN_ERR "Unprotected RD/WR to DIF device\n");
+
+ /* fall through */
case WRITE_6:
+write:
errsts = check_readiness(SCpnt, 0, devip);
if (errsts)
break;
if (scsi_debug_fake_rw)
break;
- get_data_transfer_info(cmd, &lba, &num);
- errsts = resp_write(SCpnt, lba, num, devip);
+ get_data_transfer_info(cmd, &lba, &num, &ei_lba);
+ errsts = resp_write(SCpnt, lba, num, devip, ei_lba);
if (inj_recovered && (0 == errsts)) {
mk_sense_buffer(devip, RECOVERED_ERROR,
THRESHOLD_EXCEEDED, 0);
errsts = check_condition_result;
+ } else if (inj_dif && (0 == errsts)) {
+ mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1);
+ errsts = illegal_condition_result;
+ } else if (inj_dix && (0 == errsts)) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1);
+ errsts = illegal_condition_result;
}
break;
+ case WRITE_SAME_16:
+ if (cmd[1] & 0x8)
+ unmap = 1;
+ /* fall through */
+ case WRITE_SAME:
+ errsts = check_readiness(SCpnt, 0, devip);
+ if (errsts)
+ break;
+ get_data_transfer_info(cmd, &lba, &num, &ei_lba);
+ errsts = resp_write_same(SCpnt, lba, num, devip, ei_lba, unmap);
+ break;
+ case UNMAP:
+ errsts = check_readiness(SCpnt, 0, devip);
+ if (errsts)
+ break;
+
+ if (scsi_debug_unmap_max_desc == 0) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST,
+ INVALID_COMMAND_OPCODE, 0);
+ errsts = check_condition_result;
+ } else
+ errsts = resp_unmap(SCpnt, devip);
+ break;
case MODE_SENSE:
case MODE_SENSE_10:
errsts = resp_mode_sense(SCpnt, target, devip);
break;
if (scsi_debug_fake_rw)
break;
- get_data_transfer_info(cmd, &lba, &num);
- errsts = resp_read(SCpnt, lba, num, devip);
+ get_data_transfer_info(cmd, &lba, &num, &ei_lba);
+ errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
if (errsts)
break;
- errsts = resp_write(SCpnt, lba, num, devip);
+ errsts = resp_write(SCpnt, lba, num, devip, ei_lba);
if (errsts)
break;
errsts = resp_xdwriteread(SCpnt, lba, num, devip);
break;
+ case VARIABLE_LENGTH_CMD:
+ if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) {
+
+ if ((cmd[10] & 0xe0) == 0)
+ printk(KERN_ERR
+ "Unprotected RD/WR to DIF device\n");
+
+ if (cmd[9] == READ_32) {
+ BUG_ON(SCpnt->cmd_len < 32);
+ goto read;
+ }
+
+ if (cmd[9] == WRITE_32) {
+ BUG_ON(SCpnt->cmd_len < 32);
+ goto write;
+ }
+ }
+
+ mk_sense_buffer(devip, ILLEGAL_REQUEST,
+ INVALID_FIELD_IN_CDB, 0);
+ errsts = check_condition_result;
+ break;
+
default:
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
printk(KERN_INFO "scsi_debug: Opcode: 0x%x not "
int error = 0;
struct sdebug_host_info *sdbg_host;
struct Scsi_Host *hpnt;
+ int host_prot;
sdbg_host = to_sdebug_host(dev);
hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host));
if (NULL == hpnt) {
- printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__);
+ printk(KERN_ERR "%s: scsi_register failed\n", __func__);
error = -ENODEV;
return error;
}
hpnt->max_id = scsi_debug_num_tgts;
hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */
+ host_prot = 0;
+
+ switch (scsi_debug_dif) {
+
+ case SD_DIF_TYPE1_PROTECTION:
+ host_prot = SHOST_DIF_TYPE1_PROTECTION;
+ if (scsi_debug_dix)
+ host_prot |= SHOST_DIX_TYPE1_PROTECTION;
+ break;
+
+ case SD_DIF_TYPE2_PROTECTION:
+ host_prot = SHOST_DIF_TYPE2_PROTECTION;
+ if (scsi_debug_dix)
+ host_prot |= SHOST_DIX_TYPE2_PROTECTION;
+ break;
+
+ case SD_DIF_TYPE3_PROTECTION:
+ host_prot = SHOST_DIF_TYPE3_PROTECTION;
+ if (scsi_debug_dix)
+ host_prot |= SHOST_DIX_TYPE3_PROTECTION;
+ break;
+
+ default:
+ if (scsi_debug_dix)
+ host_prot |= SHOST_DIX_TYPE0_PROTECTION;
+ break;
+ }
+
+ scsi_host_set_prot(hpnt, host_prot);
+
+ printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n",
+ (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
+ (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
+ (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
+ (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
+ (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
+ (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
+ (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
+
+ if (scsi_debug_guard == 1)
+ scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP);
+ else
+ scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC);
+
error = scsi_add_host(hpnt, &sdbg_host->dev);
if (error) {
- printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__);
+ printk(KERN_ERR "%s: scsi_add_host failed\n", __func__);
error = -ENODEV;
scsi_host_put(hpnt);
} else
if (!sdbg_host) {
printk(KERN_ERR "%s: Unable to locate host info\n",
- __FUNCTION__);
+ __func__);
return -ENODEV;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff