* SAS disks.
*
*
- * For documentation see http://www.torque.net/sg/sdebug26.html
+ * For documentation see http://sg.danny.cz/sg/sdebug26.html
*
* D. Gilbert (dpg) work for Magneto-Optical device test [20010421]
* dpg: work for devfs large number of disks [20010809]
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/timer.h>
+#include <linux/slab.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/genhd.h>
#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"
-static const char * scsi_debug_version_date = "20070104";
+#define SCSI_DEBUG_VERSION "1.82"
+static const char * scsi_debug_version_date = "20100324";
/* Additional Sense Code (ASC) */
#define NO_ADDITIONAL_SENSE 0x0
#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_VIRTUAL_GB 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_LOWEST_ALIGNED 0
+#define DEF_OPT_BLKS 64
+#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
#define SAM2_LUN_ADDRESS_METHOD 0
#define SAM2_WLUN_REPORT_LUNS 0xc101
+/* Can queue up to this number of commands. Typically commands that
+ * that have a non-zero delay are queued. */
+#define SCSI_DEBUG_CANQUEUE 255
+
static int scsi_debug_add_host = DEF_NUM_HOST;
static int scsi_debug_delay = DEF_DELAY;
static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB;
static int scsi_debug_every_nth = DEF_EVERY_NTH;
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_uld = 0;
static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */
static int scsi_debug_opts = DEF_OPTS;
static int scsi_debug_scsi_level = DEF_SCSI_LEVEL;
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 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;
static int sdebug_cylinders_per; /* cylinders per surface */
static int sdebug_sectors_per; /* sectors per cylinder */
-/* default sector size is 512 bytes, 2**9 bytes */
-#define POW2_SECT_SIZE 9
-#define SECT_SIZE (1 << POW2_SECT_SIZE)
-#define SECT_SIZE_PER(TGT) SECT_SIZE
-
#define SDEBUG_MAX_PARTS 4
#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 char sdebug_proc_name[] = "scsi_debug";
-static int sdebug_driver_probe(struct device *);
-static int sdebug_driver_remove(struct device *);
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,
0, 0, 0x0, 0x0};
-static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev);
-static void mk_sense_buffer(struct sdebug_dev_info * devip, int key,
- int asc, int asq);
-static void stop_all_queued(void);
-static int stop_queued_cmnd(struct scsi_cmnd * cmnd);
-
static int sdebug_add_adapter(void);
static void sdebug_remove_adapter(void);
-static void sdebug_max_tgts_luns(void);
-static struct device pseudo_primary;
-static struct bus_type pseudo_lld_bus;
+static void sdebug_max_tgts_luns(void)
+{
+ struct sdebug_host_info *sdbg_host;
+ struct Scsi_Host *hpnt;
+
+ spin_lock(&sdebug_host_list_lock);
+ list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
+ hpnt = sdbg_host->shost;
+ if ((hpnt->this_id >= 0) &&
+ (scsi_debug_num_tgts > hpnt->this_id))
+ hpnt->max_id = scsi_debug_num_tgts + 1;
+ else
+ hpnt->max_id = scsi_debug_num_tgts;
+ /* scsi_debug_max_luns; */
+ hpnt->max_lun = SAM2_WLUN_REPORT_LUNS;
+ }
+ spin_unlock(&sdebug_host_list_lock);
+}
+
+static void mk_sense_buffer(struct sdebug_dev_info *devip, int key,
+ int asc, int asq)
+{
+ unsigned char *sbuff;
+
+ sbuff = devip->sense_buff;
+ memset(sbuff, 0, SDEBUG_SENSE_LEN);
+
+ scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq);
+
+ if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
+ printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: "
+ "[0x%x,0x%x,0x%x]\n", key, asc, asq);
+}
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));
+
+ /* Optimal transfer length granularity */
+ gran = 1 << scsi_debug_physblk_exp;
+ arr[2] = (gran >> 8) & 0xff;
+ arr[3] = gran & 0xff;
+
+ /* Maximum Transfer Length */
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;
}
+
+ /* Optimal Transfer Length */
+ put_unaligned_be32(scsi_debug_opt_blks, &arr[8]);
+
+ if (scsi_debug_unmap_max_desc) {
+ unsigned int blocks;
+
+ if (scsi_debug_unmap_max_blocks)
+ blocks = scsi_debug_unmap_max_blocks;
+ else
+ blocks = 0xffffffff;
+
+ /* Maximum Unmap LBA Count */
+ put_unaligned_be32(blocks, &arr[16]);
+
+ /* Maximum Unmap Block Descriptor Count */
+ put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]);
+ }
+
+ /* Unmap Granularity Alignment */
+ if (scsi_debug_unmap_alignment) {
+ put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]);
+ arr[28] |= 0x80; /* UGAVALID */
+ }
+
+ /* Optimal Unmap Granularity */
+ 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; /* non rotating medium (e.g. solid state) */
+ arr[2] = 0;
+ arr[3] = 5; /* less than 1.8" */
+
+ return 0x3c;
+}
#define SDEBUG_LONG_INQ_SZ 96
#define SDEBUG_MAX_INQ_ARR_SZ 584
arr[n++] = 0x88; /* SCSI ports */
arr[n++] = 0x89; /* ATA information */
arr[n++] = 0xb0; /* Block limits (SBC) */
+ arr[n++] = 0xb1; /* Block characteristics (SBC) */
arr[3] = n - 4; /* number of supported VPD pages */
} else if (0x80 == cmd[2]) { /* unit serial number */
arr[1] = cmd[2]; /*sanity */
} 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 */
} else if (0xb0 == cmd[2]) { /* Block limits (SBC) */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_b0(&arr[4]);
+ } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */
+ arr[1] = cmd[2]; /*sanity */
+ arr[3] = inquiry_evpd_b1(&arr[4]);
} else {
/* Illegal request, invalid field in cdb */
mk_sense_buffer(devip, ILLEGAL_REQUEST,
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 (sector_t)scsi_debug_virtual_gb *
+ (1073741824 / scsi_debug_sector_size);
else
return sdebug_store_sectors;
}
arr[2] = 0xff;
arr[3] = 0xff;
}
- arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff;
- arr[7] = SECT_SIZE_PER(target) & 0xff;
+ arr[6] = (scsi_debug_sector_size >> 8) & 0xff;
+ arr[7] = scsi_debug_sector_size & 0xff;
return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ);
}
capac = sdebug_capacity - 1;
for (k = 0; k < 8; ++k, capac >>= 8)
arr[7 - k] = capac & 0xff;
- arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff;
- arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff;
- arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff;
- arr[11] = SECT_SIZE_PER(target) & 0xff;
+ arr[8] = (scsi_debug_sector_size >> 24) & 0xff;
+ 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));
}
static int resp_format_pg(unsigned char * p, int pcontrol, int target)
{ /* Format device page for mode_sense */
- unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0x40, 0, 0, 0};
-
- memcpy(p, format_pg, sizeof(format_pg));
- p[10] = (sdebug_sectors_per >> 8) & 0xff;
- p[11] = sdebug_sectors_per & 0xff;
- p[12] = (SECT_SIZE >> 8) & 0xff;
- p[13] = SECT_SIZE & 0xff;
- if (DEV_REMOVEABLE(target))
- p[20] |= 0x20; /* should agree with INQUIRY */
- if (1 == pcontrol)
- memset(p + 2, 0, sizeof(format_pg) - 2);
- return sizeof(format_pg);
+ unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0x40, 0, 0, 0};
+
+ memcpy(p, format_pg, sizeof(format_pg));
+ p[10] = (sdebug_sectors_per >> 8) & 0xff;
+ 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))
+ p[20] |= 0x20; /* should agree with INQUIRY */
+ if (1 == pcontrol)
+ memset(p + 2, 0, sizeof(format_pg) - 2);
+ return sizeof(format_pg);
}
static int resp_caching_pg(unsigned char * p, int pcontrol, int target)
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));
ap[2] = (sdebug_capacity >> 8) & 0xff;
ap[3] = sdebug_capacity & 0xff;
}
- ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff;
- ap[7] = SECT_SIZE_PER(target) & 0xff;
+ ap[6] = (scsi_debug_sector_size >> 8) & 0xff;
+ ap[7] = scsi_debug_sector_size & 0xff;
offset += bd_len;
ap = arr + offset;
} else if (16 == bd_len) {
for (k = 0; k < 8; ++k, capac >>= 8)
ap[7 - k] = capac & 0xff;
- ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff;
- ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff;
- ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff;
- ap[15] = SECT_SIZE_PER(target) & 0xff;
+ ap[12] = (scsi_debug_sector_size >> 24) & 0xff;
+ ap[13] = (scsi_debug_sector_size >> 16) & 0xff;
+ ap[14] = (scsi_debug_sector_size >> 8) & 0xff;
+ ap[15] = scsi_debug_sector_size & 0xff;
offset += bd_len;
ap = arr + offset;
}
if (block + num > sdebug_store_sectors)
rest = block + num - sdebug_store_sectors;
- ret = func(scmd, fake_storep + (block * SECT_SIZE),
- (num - rest) * SECT_SIZE);
+ 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 * SECT_SIZE);
+ ret = func(scmd, fake_storep, 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)
+{
+ 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;
}
-static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba,
- unsigned int num, struct sdebug_dev_info *devip)
+void dump_sector(unsigned char *buf, int len)
{
- unsigned long iflags;
- int ret;
-
- ret = check_device_access_params(devip, lba, num);
- if (ret)
- return ret;
+ int i, j;
- write_lock_irqsave(&atomic_rw, iflags);
- ret = do_device_access(SCpnt, devip, lba, num, 1);
- write_unlock_irqrestore(&atomic_rw, iflags);
- if (-1 == ret)
- return (DID_ERROR << 16);
- else if ((ret < (num * SECT_SIZE)) &&
- (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
- printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, "
- " IO sent=%d bytes\n", num * SECT_SIZE, ret);
- return 0;
-}
+ printk(KERN_ERR ">>> Sector Dump <<<\n");
-#define SDEBUG_RLUN_ARR_SZ 256
+ for (i = 0 ; i < len ; i += 16) {
+ printk(KERN_ERR "%04d: ", i);
-static int resp_report_luns(struct scsi_cmnd * scp,
- struct sdebug_dev_info * devip)
-{
- unsigned int alloc_len;
- int lun_cnt, i, upper, num, n, wlun, lun;
- unsigned char *cmd = (unsigned char *)scp->cmnd;
- int select_report = (int)cmd[2];
- struct scsi_lun *one_lun;
- unsigned char arr[SDEBUG_RLUN_ARR_SZ];
- unsigned char * max_addr;
+ 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]);
+ }
- alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24);
- if ((alloc_len < 4) || (select_report > 2)) {
- mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
- 0);
- return check_condition_result;
- }
- /* can produce response with up to 16k luns (lun 0 to lun 16383) */
- memset(arr, 0, SDEBUG_RLUN_ARR_SZ);
- lun_cnt = scsi_debug_max_luns;
- if (1 == select_report)
- lun_cnt = 0;
- else if (scsi_debug_no_lun_0 && (lun_cnt > 0))
- --lun_cnt;
- wlun = (select_report > 0) ? 1 : 0;
- num = lun_cnt + wlun;
- arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff;
- arr[3] = (sizeof(struct scsi_lun) * num) & 0xff;
- n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) /
- sizeof(struct scsi_lun)), num);
- if (n < num) {
- wlun = 0;
- lun_cnt = n;
- }
- one_lun = (struct scsi_lun *) &arr[8];
- max_addr = arr + SDEBUG_RLUN_ARR_SZ;
- for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0);
- ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr));
- i++, lun++) {
- upper = (lun >> 8) & 0x3f;
- if (upper)
- one_lun[i].scsi_lun[0] =
- (upper | (SAM2_LUN_ADDRESS_METHOD << 6));
- one_lun[i].scsi_lun[1] = lun & 0xff;
- }
- if (wlun) {
- one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff;
- one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff;
- i++;
+ printk("\n");
}
- alloc_len = (unsigned char *)(one_lun + i) - arr;
- return fill_from_dev_buffer(scp, arr,
- min((int)alloc_len, SDEBUG_RLUN_ARR_SZ));
}
-static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba,
- unsigned int num, struct sdebug_dev_info *devip)
+static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
+ unsigned int sectors, u32 ei_lba)
{
- int i, j, ret = -1;
- unsigned char *kaddr, *buf;
- unsigned int offset;
- struct scatterlist *sg;
- struct scsi_data_buffer *sdb = scsi_in(scp);
+ 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;
- /* better not to use temporary buffer. */
- buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC);
- if (!buf)
- return ret;
+ sector = do_div(tmp_sec, sdebug_store_sectors);
- scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp));
+ BUG_ON(scsi_sg_count(SCpnt) == 0);
+ BUG_ON(scsi_prot_sg_count(SCpnt) == 0);
- 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;
+ paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset;
+ ppage_offset = 0;
- for (j = 0; j < sg->length; j++)
- *(kaddr + sg->offset + j) ^= *(buf + offset + j);
+ /* 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;
- offset += sg->length;
- kunmap_atomic(kaddr, KM_USER0);
+ /* 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);
}
- ret = 0;
-out:
- kfree(buf);
+ kunmap_atomic(paddr, KM_IRQ1);
+
+ dix_writes++;
+
+ return 0;
+
+out:
+ dif_errors++;
+ kunmap_atomic(daddr, KM_IRQ0);
+ kunmap_atomic(paddr, KM_IRQ1);
return ret;
}
-/* When timer goes off this function is called. */
-static void timer_intr_handler(unsigned long indx)
+static unsigned int map_state(sector_t lba, unsigned int *num)
{
- struct sdebug_queued_cmd * sqcp;
- unsigned long iflags;
+ unsigned int granularity, alignment, mapped;
+ sector_t block, next, end;
- if (indx >= SCSI_DEBUG_CANQUEUE) {
- printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too "
- "large\n");
- return;
- }
- spin_lock_irqsave(&queued_arr_lock, iflags);
- sqcp = &queued_arr[(int)indx];
- if (! sqcp->in_use) {
- printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected "
- "interrupt\n");
- spin_unlock_irqrestore(&queued_arr_lock, iflags);
- return;
- }
- sqcp->in_use = 0;
- if (sqcp->done_funct) {
- sqcp->a_cmnd->result = sqcp->scsi_result;
- sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */
- }
- sqcp->done_funct = NULL;
- spin_unlock_irqrestore(&queued_arr_lock, iflags);
+ 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 int scsi_debug_slave_alloc(struct scsi_device * sdp)
+static void map_region(sector_t lba, unsigned int len)
{
- if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n",
- sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
- set_bit(QUEUE_FLAG_BIDI, &sdp->request_queue->queue_flags);
+ 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,
+ u32 ei_lba)
+{
+ unsigned long iflags;
+ int ret;
+
+ ret = check_device_access_params(devip, lba, num);
+ 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);
+ else if ((ret < (num * scsi_debug_sector_size)) &&
+ (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 scsi_debug_slave_configure(struct scsi_device * sdp)
+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)
{
- struct sdebug_dev_info * devip;
+ 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);
- if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n",
- sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
- if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN)
- sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN;
- devip = devInfoReg(sdp);
- if (NULL == devip)
- return 1; /* no resources, will be marked offline */
- sdp->hostdata = devip;
- if (sdp->host->cmd_per_lun)
- scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING,
- sdp->host->cmd_per_lun);
- blk_queue_max_segment_size(sdp->request_queue, 256 * 1024);
return 0;
}
-static void scsi_debug_slave_destroy(struct scsi_device * sdp)
+struct unmap_block_desc {
+ __be64 lba;
+ __be32 blocks;
+ __be32 __reserved;
+};
+
+static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
{
- struct sdebug_dev_info * devip =
- (struct sdebug_dev_info *)sdp->hostdata;
+ unsigned char *buf;
+ struct unmap_block_desc *desc;
+ unsigned int i, payload_len, descriptors;
+ int ret;
- if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- 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 */
- devip->used = 0;
- sdp->hostdata = NULL;
+ 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,
+ struct sdebug_dev_info * devip)
+{
+ unsigned int alloc_len;
+ int lun_cnt, i, upper, num, n, wlun, lun;
+ unsigned char *cmd = (unsigned char *)scp->cmnd;
+ int select_report = (int)cmd[2];
+ struct scsi_lun *one_lun;
+ unsigned char arr[SDEBUG_RLUN_ARR_SZ];
+ unsigned char * max_addr;
+
+ alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24);
+ if ((alloc_len < 4) || (select_report > 2)) {
+ mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
+ 0);
+ return check_condition_result;
}
+ /* can produce response with up to 16k luns (lun 0 to lun 16383) */
+ memset(arr, 0, SDEBUG_RLUN_ARR_SZ);
+ lun_cnt = scsi_debug_max_luns;
+ if (1 == select_report)
+ lun_cnt = 0;
+ else if (scsi_debug_no_lun_0 && (lun_cnt > 0))
+ --lun_cnt;
+ wlun = (select_report > 0) ? 1 : 0;
+ num = lun_cnt + wlun;
+ arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff;
+ arr[3] = (sizeof(struct scsi_lun) * num) & 0xff;
+ n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) /
+ sizeof(struct scsi_lun)), num);
+ if (n < num) {
+ wlun = 0;
+ lun_cnt = n;
+ }
+ one_lun = (struct scsi_lun *) &arr[8];
+ max_addr = arr + SDEBUG_RLUN_ARR_SZ;
+ for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0);
+ ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr));
+ i++, lun++) {
+ upper = (lun >> 8) & 0x3f;
+ if (upper)
+ one_lun[i].scsi_lun[0] =
+ (upper | (SAM2_LUN_ADDRESS_METHOD << 6));
+ one_lun[i].scsi_lun[1] = lun & 0xff;
+ }
+ if (wlun) {
+ one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff;
+ one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff;
+ i++;
+ }
+ alloc_len = (unsigned char *)(one_lun + i) - arr;
+ return fill_from_dev_buffer(scp, arr,
+ min((int)alloc_len, SDEBUG_RLUN_ARR_SZ));
}
-struct sdebug_dev_info *sdebug_device_create(struct sdebug_host_info *sdbg_host,
- gfp_t flags)
+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;
+ unsigned char *kaddr, *buf;
+ unsigned int offset;
+ struct scatterlist *sg;
+ struct scsi_data_buffer *sdb = scsi_in(scp);
+
+ /* better not to use temporary buffer. */
+ buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC);
+ if (!buf)
+ return ret;
+
+ 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;
+
+ for (j = 0; j < sg->length; j++)
+ *(kaddr + sg->offset + j) ^= *(buf + offset + j);
+
+ offset += sg->length;
+ kunmap_atomic(kaddr, KM_USER0);
+ }
+ ret = 0;
+out:
+ kfree(buf);
+
+ return ret;
+}
+
+/* When timer goes off this function is called. */
+static void timer_intr_handler(unsigned long indx)
+{
+ struct sdebug_queued_cmd * sqcp;
+ unsigned long iflags;
+
+ if (indx >= scsi_debug_max_queue) {
+ printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too "
+ "large\n");
+ return;
+ }
+ spin_lock_irqsave(&queued_arr_lock, iflags);
+ sqcp = &queued_arr[(int)indx];
+ if (! sqcp->in_use) {
+ printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected "
+ "interrupt\n");
+ spin_unlock_irqrestore(&queued_arr_lock, iflags);
+ return;
+ }
+ sqcp->in_use = 0;
+ if (sqcp->done_funct) {
+ sqcp->a_cmnd->result = sqcp->scsi_result;
+ sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */
+ }
+ sqcp->done_funct = NULL;
+ spin_unlock_irqrestore(&queued_arr_lock, iflags);
+}
+
+
+static struct sdebug_dev_info *
+sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags)
{
struct sdebug_dev_info *devip;
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;
}
}
if (sdev->lun == SAM2_WLUN_REPORT_LUNS)
open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff;
- return open_devip;
+ return open_devip;
+}
+
+static int scsi_debug_slave_alloc(struct scsi_device *sdp)
+{
+ if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
+ printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n",
+ sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
+ queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue);
+ return 0;
+}
+
+static int scsi_debug_slave_configure(struct scsi_device *sdp)
+{
+ struct sdebug_dev_info *devip;
+
+ if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
+ printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n",
+ sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
+ if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN)
+ sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN;
+ devip = devInfoReg(sdp);
+ if (NULL == devip)
+ return 1; /* no resources, will be marked offline */
+ sdp->hostdata = devip;
+ if (sdp->host->cmd_per_lun)
+ scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING,
+ sdp->host->cmd_per_lun);
+ blk_queue_max_segment_size(sdp->request_queue, 256 * 1024);
+ if (scsi_debug_no_uld)
+ sdp->no_uld_attach = 1;
+ return 0;
+}
+
+static void scsi_debug_slave_destroy(struct scsi_device *sdp)
+{
+ struct sdebug_dev_info *devip =
+ (struct sdebug_dev_info *)sdp->hostdata;
+
+ if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
+ 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 */
+ devip->used = 0;
+ sdp->hostdata = NULL;
+ }
+}
+
+/* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */
+static int stop_queued_cmnd(struct scsi_cmnd *cmnd)
+{
+ unsigned long iflags;
+ int k;
+ struct sdebug_queued_cmd *sqcp;
+
+ spin_lock_irqsave(&queued_arr_lock, iflags);
+ for (k = 0; k < scsi_debug_max_queue; ++k) {
+ sqcp = &queued_arr[k];
+ if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) {
+ del_timer_sync(&sqcp->cmnd_timer);
+ sqcp->in_use = 0;
+ sqcp->a_cmnd = NULL;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&queued_arr_lock, iflags);
+ return (k < scsi_debug_max_queue) ? 1 : 0;
}
-static void mk_sense_buffer(struct sdebug_dev_info * devip, int key,
- int asc, int asq)
+/* Deletes (stops) timers of all queued commands */
+static void stop_all_queued(void)
{
- unsigned char *sbuff;
-
- sbuff = devip->sense_buff;
- memset(sbuff, 0, SDEBUG_SENSE_LEN);
-
- scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq);
+ unsigned long iflags;
+ int k;
+ struct sdebug_queued_cmd *sqcp;
- if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: "
- "[0x%x,0x%x,0x%x]\n", key, asc, asq);
+ spin_lock_irqsave(&queued_arr_lock, iflags);
+ for (k = 0; k < scsi_debug_max_queue; ++k) {
+ sqcp = &queued_arr[k];
+ if (sqcp->in_use && sqcp->a_cmnd) {
+ del_timer_sync(&sqcp->cmnd_timer);
+ sqcp->in_use = 0;
+ sqcp->a_cmnd = NULL;
+ }
+ }
+ spin_unlock_irqrestore(&queued_arr_lock, iflags);
}
static int scsi_debug_abort(struct scsi_cmnd * SCpnt)
return SUCCESS;
}
-/* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */
-static int stop_queued_cmnd(struct scsi_cmnd * cmnd)
-{
- unsigned long iflags;
- int k;
- struct sdebug_queued_cmd * sqcp;
-
- spin_lock_irqsave(&queued_arr_lock, iflags);
- for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) {
- sqcp = &queued_arr[k];
- if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) {
- del_timer_sync(&sqcp->cmnd_timer);
- sqcp->in_use = 0;
- sqcp->a_cmnd = NULL;
- break;
- }
- }
- spin_unlock_irqrestore(&queued_arr_lock, iflags);
- return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0;
-}
-
-/* Deletes (stops) timers of all queued commands */
-static void stop_all_queued(void)
-{
- unsigned long iflags;
- int k;
- struct sdebug_queued_cmd * sqcp;
-
- spin_lock_irqsave(&queued_arr_lock, iflags);
- for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) {
- sqcp = &queued_arr[k];
- if (sqcp->in_use && sqcp->a_cmnd) {
- del_timer_sync(&sqcp->cmnd_timer);
- sqcp->in_use = 0;
- sqcp->a_cmnd = NULL;
- }
- }
- spin_unlock_irqrestore(&queued_arr_lock, iflags);
-}
-
/* Initializes timers in queued array */
static void __init init_all_queued(void)
{
struct sdebug_queued_cmd * sqcp;
spin_lock_irqsave(&queued_arr_lock, iflags);
- for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) {
+ for (k = 0; k < scsi_debug_max_queue; ++k) {
sqcp = &queued_arr[k];
init_timer(&sqcp->cmnd_timer);
sqcp->in_use = 0;
struct sdebug_queued_cmd * sqcp = NULL;
spin_lock_irqsave(&queued_arr_lock, iflags);
- for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) {
+ for (k = 0; k < scsi_debug_max_queue; ++k) {
sqcp = &queued_arr[k];
if (! sqcp->in_use)
break;
}
- if (k >= SCSI_DEBUG_CANQUEUE) {
+ if (k >= scsi_debug_max_queue) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
printk(KERN_WARNING "scsi_debug: can_queue exceeded\n");
return 1; /* report busy to mid level */
return 0;
}
}
-
/* Note: The following macros create attribute files in the
/sys/module/scsi_debug/parameters directory. Unfortunately this
driver is unaware of a change and cannot trigger auxiliary actions
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(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(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR);
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_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(every_nth, "timeout every nth command(def=0)");
MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (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(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (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_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,
- SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per,
- num_aborts, num_dev_resets, num_bus_resets, num_host_resets);
+ 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;
DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show,
sdebug_max_luns_store);
+static ssize_t sdebug_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)
+{
+ int n;
+
+ if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) &&
+ (n <= SCSI_DEBUG_CANQUEUE)) {
+ scsi_debug_max_queue = n;
+ return count;
+ }
+ return -EINVAL;
+}
+DRIVER_ATTR(max_queue, S_IRUGO | S_IWUSR, sdebug_max_queue_show,
+ sdebug_max_queue_store);
+
+static ssize_t sdebug_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 ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level);
DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show,
sdebug_vpd_use_hostno_store);
+static ssize_t sdebug_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 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_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_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 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_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_add_host);
}
+static void pseudo_0_release(struct device *dev)
+{
+ if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
+ printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n");
+}
+
+static struct device pseudo_primary = {
+ .init_name = "pseudo_0",
+ .release = pseudo_0_release,
+};
+
static int __init scsi_debug_init(void)
{
unsigned long sz;
int k;
int ret;
+ switch (scsi_debug_sector_size) {
+ case 512:
+ case 1024:
+ case 2048:
+ case 4096:
+ break;
+ default:
+ 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;
- sdebug_store_sectors = sz / SECT_SIZE;
+ sdebug_store_sectors = sz / scsi_debug_sector_size;
sdebug_capacity = get_sdebug_capacity();
/* play around with geometry, don't waste too much on track 0 */
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);
}
device_initcall(scsi_debug_init);
module_exit(scsi_debug_exit);
-static void pseudo_0_release(struct device * dev)
-{
- if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n");
-}
-
-static struct device pseudo_primary = {
- .bus_id = "pseudo_0",
- .release = pseudo_0_release,
-};
-
-static int pseudo_lld_bus_match(struct device *dev,
- struct device_driver *dev_driver)
-{
- return 1;
-}
-
-static struct bus_type pseudo_lld_bus = {
- .name = "pseudo",
- .match = pseudo_lld_bus_match,
- .probe = sdebug_driver_probe,
- .remove = sdebug_driver_remove,
-};
-
static void sdebug_release_adapter(struct device * dev)
{
struct sdebug_host_info *sdbg_host;
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__);
- error = -ENODEV;
+ sdebug_driver_template.can_queue = scsi_debug_max_queue;
+ hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host));
+ if (NULL == hpnt) {
+ printk(KERN_ERR "%s: scsi_register failed\n", __func__);
+ error = -ENODEV;
return error;
- }
+ }
sdbg_host->shost = hpnt;
*((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host;
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;
}
return 0;
}
-static void sdebug_max_tgts_luns(void)
+static int pseudo_lld_bus_match(struct device *dev,
+ struct device_driver *dev_driver)
{
- struct sdebug_host_info * sdbg_host;
- struct Scsi_Host *hpnt;
-
- spin_lock(&sdebug_host_list_lock);
- list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
- hpnt = sdbg_host->shost;
- if ((hpnt->this_id >= 0) &&
- (scsi_debug_num_tgts > hpnt->this_id))
- hpnt->max_id = scsi_debug_num_tgts + 1;
- else
- hpnt->max_id = scsi_debug_num_tgts;
- hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */
- }
- spin_unlock(&sdebug_host_list_lock);
+ return 1;
}
+
+static struct bus_type pseudo_lld_bus = {
+ .name = "pseudo",
+ .match = pseudo_lld_bus_match,
+ .probe = sdebug_driver_probe,
+ .remove = sdebug_driver_remove,
+};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff