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scsi: sd: Move DIF protection types to t10-pi.h 

These should go together with the rest of the T10 protection information
defintions.

[mkp: s/T10_DIF/T10_PI/]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2016-09-11 19:35:41 +02:00 коммит произвёл Martin K. Petersen
Родитель 27c0e83b27
Коммит 8475c81185
5 изменённых файлов: 50 добавлений и 51 удалений
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39
drivers/scsi/scsi_debug.c
Просмотреть файл

@ -1350,7 +1350,7 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
} else if (0x86 == cmd[2]) { /* extended inquiry */
arr[1] = cmd[2]; /*sanity */
arr[3] = 0x3c; /* number of following entries */
if (sdebug_dif == SD_DIF_TYPE3_PROTECTION)
if (sdebug_dif == T10_PI_TYPE3_PROTECTION)
arr[4] = 0x4; /* SPT: GRD_CHK:1 */
else if (have_dif_prot)
arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */
@ -2443,13 +2443,13 @@ static int dif_verify(struct t10_pi_tuple *sdt, const void *data,
be16_to_cpu(csum));
return 0x01;
}
if (sdebug_dif == SD_DIF_TYPE1_PROTECTION &&
if (sdebug_dif == T10_PI_TYPE1_PROTECTION &&
be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) {
pr_err("REF check failed on sector %lu\n",
(unsigned long)sector);
return 0x03;
}
if (sdebug_dif == SD_DIF_TYPE2_PROTECTION &&
if (sdebug_dif == T10_PI_TYPE2_PROTECTION &&
be32_to_cpu(sdt->ref_tag) != ei_lba) {
pr_err("REF check failed on sector %lu\n",
(unsigned long)sector);
@ -2581,13 +2581,13 @@ static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
break;
}
if (unlikely(have_dif_prot && check_prot)) {
if (sdebug_dif == SD_DIF_TYPE2_PROTECTION &&
if (sdebug_dif == T10_PI_TYPE2_PROTECTION &&
(cmd[1] & 0xe0)) {
mk_sense_invalid_opcode(scp);
return check_condition_result;
}
if ((sdebug_dif == SD_DIF_TYPE1_PROTECTION ||
sdebug_dif == SD_DIF_TYPE3_PROTECTION) &&
if ((sdebug_dif == T10_PI_TYPE1_PROTECTION ||
sdebug_dif == T10_PI_TYPE3_PROTECTION) &&
(cmd[1] & 0xe0) == 0)
sdev_printk(KERN_ERR, scp->device, "Unprotected RD "
"to DIF device\n");
@ -2894,13 +2894,13 @@ static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
break;
}
if (unlikely(have_dif_prot && check_prot)) {
if (sdebug_dif == SD_DIF_TYPE2_PROTECTION &&
if (sdebug_dif == T10_PI_TYPE2_PROTECTION &&
(cmd[1] & 0xe0)) {
mk_sense_invalid_opcode(scp);
return check_condition_result;
}
if ((sdebug_dif == SD_DIF_TYPE1_PROTECTION ||
sdebug_dif == SD_DIF_TYPE3_PROTECTION) &&
if ((sdebug_dif == T10_PI_TYPE1_PROTECTION ||
sdebug_dif == T10_PI_TYPE3_PROTECTION) &&
(cmd[1] & 0xe0) == 0)
sdev_printk(KERN_ERR, scp->device, "Unprotected WR "
"to DIF device\n");
@ -3136,13 +3136,13 @@ static int resp_comp_write(struct scsi_cmnd *scp,
num = cmd[13]; /* 1 to a maximum of 255 logical blocks */
if (0 == num)
return 0; /* degenerate case, not an error */
if (sdebug_dif == SD_DIF_TYPE2_PROTECTION &&
if (sdebug_dif == T10_PI_TYPE2_PROTECTION &&
(cmd[1] & 0xe0)) {
mk_sense_invalid_opcode(scp);
return check_condition_result;
}
if ((sdebug_dif == SD_DIF_TYPE1_PROTECTION ||
sdebug_dif == SD_DIF_TYPE3_PROTECTION) &&
if ((sdebug_dif == T10_PI_TYPE1_PROTECTION ||
sdebug_dif == T10_PI_TYPE3_PROTECTION) &&
(cmd[1] & 0xe0) == 0)
sdev_printk(KERN_ERR, scp->device, "Unprotected WR "
"to DIF device\n");
@ -4940,12 +4940,11 @@ static int __init scsi_debug_init(void)
}
switch (sdebug_dif) {
case SD_DIF_TYPE0_PROTECTION:
case T10_PI_TYPE0_PROTECTION:
break;
case SD_DIF_TYPE1_PROTECTION:
case SD_DIF_TYPE2_PROTECTION:
case SD_DIF_TYPE3_PROTECTION:
case T10_PI_TYPE1_PROTECTION:
case T10_PI_TYPE2_PROTECTION:
case T10_PI_TYPE3_PROTECTION:
have_dif_prot = true;
break;
@ -5481,19 +5480,19 @@ static int sdebug_driver_probe(struct device * dev)
switch (sdebug_dif) {
case SD_DIF_TYPE1_PROTECTION:
case T10_PI_TYPE1_PROTECTION:
hprot = SHOST_DIF_TYPE1_PROTECTION;
if (sdebug_dix)
hprot |= SHOST_DIX_TYPE1_PROTECTION;
break;
case SD_DIF_TYPE2_PROTECTION:
case T10_PI_TYPE2_PROTECTION:
hprot = SHOST_DIF_TYPE2_PROTECTION;
if (sdebug_dix)
hprot |= SHOST_DIX_TYPE2_PROTECTION;
break;
case SD_DIF_TYPE3_PROTECTION:
case T10_PI_TYPE3_PROTECTION:
hprot = SHOST_DIF_TYPE3_PROTECTION;
if (sdebug_dix)
hprot |= SHOST_DIX_TYPE3_PROTECTION;

11
drivers/scsi/sd.c
Просмотреть файл

@ -52,6 +52,7 @@
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/pr.h>
#include <linux/t10-pi.h>
#include <asm/uaccess.h>
#include <asm/unaligned.h>
@ -314,7 +315,7 @@ protection_type_store(struct device *dev, struct device_attribute *attr,
if (err)
return err;
if (val >= 0 && val <= SD_DIF_TYPE3_PROTECTION)
if (val >= 0 && val <= T10_PI_TYPE3_PROTECTION)
sdkp->protection_type = val;
return count;
@ -332,7 +333,7 @@ protection_mode_show(struct device *dev, struct device_attribute *attr,
dif = scsi_host_dif_capable(sdp->host, sdkp->protection_type);
dix = scsi_host_dix_capable(sdp->host, sdkp->protection_type);
if (!dix && scsi_host_dix_capable(sdp->host, SD_DIF_TYPE0_PROTECTION)) {
if (!dix && scsi_host_dix_capable(sdp->host, T10_PI_TYPE0_PROTECTION)) {
dif = 0;
dix = 1;
}
@ -608,7 +609,7 @@ static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd,
scmd->prot_flags |= SCSI_PROT_GUARD_CHECK;
}
if (dif != SD_DIF_TYPE3_PROTECTION) { /* DIX/DIF Type 0, 1, 2 */
if (dif != T10_PI_TYPE3_PROTECTION) { /* DIX/DIF Type 0, 1, 2 */
scmd->prot_flags |= SCSI_PROT_REF_INCREMENT;
if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false)
@ -1031,7 +1032,7 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
else
protect = 0;
if (protect && sdkp->protection_type == SD_DIF_TYPE2_PROTECTION) {
if (protect && sdkp->protection_type == T10_PI_TYPE2_PROTECTION) {
SCpnt->cmnd = mempool_alloc(sd_cdb_pool, GFP_ATOMIC);
if (unlikely(SCpnt->cmnd == NULL)) {
@ -1997,7 +1998,7 @@ static int sd_read_protection_type(struct scsi_disk *sdkp, unsigned char *buffer
type = ((buffer[12] >> 1) & 7) + 1; /* P_TYPE 0 = Type 1 */
if (type > SD_DIF_TYPE3_PROTECTION)
if (type > T10_PI_TYPE3_PROTECTION)
ret = -ENODEV;
else if (scsi_host_dif_capable(sdp->host, type))
ret = 1;

21
drivers/scsi/sd.h
Просмотреть файл

@ -156,27 +156,6 @@ static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t b
return blocks * sdev->sector_size;
}
/*
* A DIF-capable target device can be formatted with different
* protection schemes. Currently 0 through 3 are defined:
*
* Type 0 is regular (unprotected) I/O
*
* Type 1 defines the contents of the guard and reference tags
*
* Type 2 defines the contents of the guard and reference tags and
* uses 32-byte commands to seed the latter
*
* Type 3 defines the contents of the guard tag only
*/
enum sd_dif_target_protection_types {
SD_DIF_TYPE0_PROTECTION = 0x0,
SD_DIF_TYPE1_PROTECTION = 0x1,
SD_DIF_TYPE2_PROTECTION = 0x2,
SD_DIF_TYPE3_PROTECTION = 0x3,
};
/*
* Look up the DIX operation based on whether the command is read or
* write and whether dix and dif are enabled.

10
drivers/scsi/sd_dif.c
Просмотреть файл

@ -60,14 +60,14 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
/* Enable DMA of protection information */
if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) {
if (type == SD_DIF_TYPE3_PROTECTION)
if (type == T10_PI_TYPE3_PROTECTION)
bi.profile = &t10_pi_type3_ip;
else
bi.profile = &t10_pi_type1_ip;
bi.flags |= BLK_INTEGRITY_IP_CHECKSUM;
} else
if (type == SD_DIF_TYPE3_PROTECTION)
if (type == T10_PI_TYPE3_PROTECTION)
bi.profile = &t10_pi_type3_crc;
else
bi.profile = &t10_pi_type1_crc;
@ -82,7 +82,7 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
if (!sdkp->ATO)
goto out;
if (type == SD_DIF_TYPE3_PROTECTION)
if (type == T10_PI_TYPE3_PROTECTION)
bi.tag_size = sizeof(u16) + sizeof(u32);
else
bi.tag_size = sizeof(u16);
@ -121,7 +121,7 @@ void sd_dif_prepare(struct scsi_cmnd *scmd)
sdkp = scsi_disk(scmd->request->rq_disk);
if (sdkp->protection_type == SD_DIF_TYPE3_PROTECTION)
if (sdkp->protection_type == T10_PI_TYPE3_PROTECTION)
return;
phys = scsi_prot_ref_tag(scmd);
@ -172,7 +172,7 @@ void sd_dif_complete(struct scsi_cmnd *scmd, unsigned int good_bytes)
sdkp = scsi_disk(scmd->request->rq_disk);
if (sdkp->protection_type == SD_DIF_TYPE3_PROTECTION || good_bytes == 0)
if (sdkp->protection_type == T10_PI_TYPE3_PROTECTION || good_bytes == 0)
return;
intervals = good_bytes / scsi_prot_interval(scmd);

20
include/linux/t10-pi.h
Просмотреть файл

@ -4,6 +4,26 @@
#include <linux/types.h>
#include <linux/blkdev.h>
/*
* A T10 PI-capable target device can be formatted with different
* protection schemes. Currently 0 through 3 are defined:
*
* Type 0 is regular (unprotected) I/O
*
* Type 1 defines the contents of the guard and reference tags
*
* Type 2 defines the contents of the guard and reference tags and
* uses 32-byte commands to seed the latter
*
* Type 3 defines the contents of the guard tag only
*/
enum t10_dif_type {
T10_PI_TYPE0_PROTECTION = 0x0,
T10_PI_TYPE1_PROTECTION = 0x1,
T10_PI_TYPE2_PROTECTION = 0x2,
T10_PI_TYPE3_PROTECTION = 0x3,
};
/*
* T10 Protection Information tuple.
*/