diff options
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index a783cd33a3e4..e7b39f133482 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -108,6 +108,7 @@ static const char * scsi_debug_version_date = "20100324"; #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 @@ -175,6 +176,7 @@ 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; @@ -704,9 +706,13 @@ 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; @@ -714,6 +720,9 @@ static int inquiry_evpd_b0(unsigned char * arr) 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; @@ -722,15 +731,20 @@ static int inquiry_evpd_b0(unsigned char * arr) 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 */ @@ -2685,6 +2699,7 @@ 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); @@ -2715,6 +2730,7 @@ 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)"); |
