From 73da9c13d4df3c1715029aa45edc78d71b617dfd Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Wed, 22 Apr 2009 17:42:25 -0700 Subject: [SCSI] scsi_debug: fix virtual disk larger than 1TB Signed-off-by: FUJITA Tomonori Acked-by: Douglas Gilbert Signed-off-by: James Bottomley --- drivers/scsi/scsi_debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/scsi_debug.c') diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 213123b0486..41a21772df1 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -887,7 +887,7 @@ static int resp_start_stop(struct scsi_cmnd * scp, 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; } -- cgit v1.2.3-70-g09d2 From ea61fca58c1373a48c0741798f70364d4498d2af Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Fri, 15 May 2009 00:40:33 -0400 Subject: scsi_debug: Add support for physical block exponent and alignment This patch adds support for setting the physical block exponent and lowest aligned LBA in the READ CAPACITY(16) response. The B0 VPD page is adjusted accordingly. Signed-off-by: Martin K. Petersen Acked-by: Douglas Gilbert Signed-off-by: James Bottomley --- drivers/scsi/scsi_debug.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/scsi_debug.c') diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 41a21772df1..fb9af207d61 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -101,6 +101,8 @@ static const char * scsi_debug_version_date = "20070104"; #define DEF_DIF 0 #define DEF_GUARD 0 #define DEF_ATO 1 +#define DEF_PHYSBLK_EXP 0 +#define DEF_LOWEST_ALIGNED 0 /* bit mask values for scsi_debug_opts */ #define SCSI_DEBUG_OPT_NOISE 1 @@ -156,6 +158,8 @@ 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_cmnd_count = 0; @@ -657,7 +661,12 @@ static unsigned char vpdb0_data[] = { 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; @@ -945,6 +954,9 @@ static int resp_readcap16(struct scsi_cmnd * scp, 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; + arr[15] = scsi_debug_lowest_aligned & 0xff; if (scsi_debug_dif) { arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ @@ -2380,6 +2392,8 @@ 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_AUTHOR("Eric Youngdale + Douglas Gilbert"); MODULE_DESCRIPTION("SCSI debug adapter driver"); @@ -2401,7 +2415,9 @@ MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); 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)"); @@ -2874,6 +2890,18 @@ static int __init scsi_debug_init(void) 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; -- cgit v1.2.3-70-g09d2