mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
c498bf1a1b
As of SBC3r26 WRITE SAME(10) supports the UNMAP bit. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <jbottomley@parallels.com>
289 lines
6.6 KiB
C
289 lines
6.6 KiB
C
/*
|
|
* Copyright (C) 2010 FUJITSU LIMITED
|
|
* Copyright (C) 2010 Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/trace_seq.h>
|
|
#include <trace/events/scsi.h>
|
|
|
|
#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
|
|
#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])
|
|
|
|
static const char *
|
|
scsi_trace_misc(struct trace_seq *, unsigned char *, int);
|
|
|
|
static const char *
|
|
scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len;
|
|
sector_t lba = 0, txlen = 0;
|
|
|
|
lba |= ((cdb[1] & 0x1F) << 16);
|
|
lba |= (cdb[2] << 8);
|
|
lba |= cdb[3];
|
|
txlen = cdb[4];
|
|
|
|
trace_seq_printf(p, "lba=%llu txlen=%llu",
|
|
(unsigned long long)lba, (unsigned long long)txlen);
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len;
|
|
sector_t lba = 0, txlen = 0;
|
|
|
|
lba |= (cdb[2] << 24);
|
|
lba |= (cdb[3] << 16);
|
|
lba |= (cdb[4] << 8);
|
|
lba |= cdb[5];
|
|
txlen |= (cdb[7] << 8);
|
|
txlen |= cdb[8];
|
|
|
|
trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
|
|
(unsigned long long)lba, (unsigned long long)txlen,
|
|
cdb[1] >> 5);
|
|
|
|
if (cdb[0] == WRITE_SAME)
|
|
trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
|
|
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len;
|
|
sector_t lba = 0, txlen = 0;
|
|
|
|
lba |= (cdb[2] << 24);
|
|
lba |= (cdb[3] << 16);
|
|
lba |= (cdb[4] << 8);
|
|
lba |= cdb[5];
|
|
txlen |= (cdb[6] << 24);
|
|
txlen |= (cdb[7] << 16);
|
|
txlen |= (cdb[8] << 8);
|
|
txlen |= cdb[9];
|
|
|
|
trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
|
|
(unsigned long long)lba, (unsigned long long)txlen,
|
|
cdb[1] >> 5);
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len;
|
|
sector_t lba = 0, txlen = 0;
|
|
|
|
lba |= ((u64)cdb[2] << 56);
|
|
lba |= ((u64)cdb[3] << 48);
|
|
lba |= ((u64)cdb[4] << 40);
|
|
lba |= ((u64)cdb[5] << 32);
|
|
lba |= (cdb[6] << 24);
|
|
lba |= (cdb[7] << 16);
|
|
lba |= (cdb[8] << 8);
|
|
lba |= cdb[9];
|
|
txlen |= (cdb[10] << 24);
|
|
txlen |= (cdb[11] << 16);
|
|
txlen |= (cdb[12] << 8);
|
|
txlen |= cdb[13];
|
|
|
|
trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
|
|
(unsigned long long)lba, (unsigned long long)txlen,
|
|
cdb[1] >> 5);
|
|
|
|
if (cdb[0] == WRITE_SAME_16)
|
|
trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
|
|
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len, *cmd;
|
|
sector_t lba = 0, txlen = 0;
|
|
u32 ei_lbrt = 0;
|
|
|
|
switch (SERVICE_ACTION32(cdb)) {
|
|
case READ_32:
|
|
cmd = "READ";
|
|
break;
|
|
case VERIFY_32:
|
|
cmd = "VERIFY";
|
|
break;
|
|
case WRITE_32:
|
|
cmd = "WRITE";
|
|
break;
|
|
case WRITE_SAME_32:
|
|
cmd = "WRITE_SAME";
|
|
break;
|
|
default:
|
|
trace_seq_printf(p, "UNKNOWN");
|
|
goto out;
|
|
}
|
|
|
|
lba |= ((u64)cdb[12] << 56);
|
|
lba |= ((u64)cdb[13] << 48);
|
|
lba |= ((u64)cdb[14] << 40);
|
|
lba |= ((u64)cdb[15] << 32);
|
|
lba |= (cdb[16] << 24);
|
|
lba |= (cdb[17] << 16);
|
|
lba |= (cdb[18] << 8);
|
|
lba |= cdb[19];
|
|
ei_lbrt |= (cdb[20] << 24);
|
|
ei_lbrt |= (cdb[21] << 16);
|
|
ei_lbrt |= (cdb[22] << 8);
|
|
ei_lbrt |= cdb[23];
|
|
txlen |= (cdb[28] << 24);
|
|
txlen |= (cdb[29] << 16);
|
|
txlen |= (cdb[30] << 8);
|
|
txlen |= cdb[31];
|
|
|
|
trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
|
|
cmd, (unsigned long long)lba,
|
|
(unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
|
|
|
|
if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
|
|
trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
|
|
|
|
out:
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len;
|
|
unsigned int regions = cdb[7] << 8 | cdb[8];
|
|
|
|
trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len, *cmd;
|
|
sector_t lba = 0;
|
|
u32 alloc_len = 0;
|
|
|
|
switch (SERVICE_ACTION16(cdb)) {
|
|
case SAI_READ_CAPACITY_16:
|
|
cmd = "READ_CAPACITY_16";
|
|
break;
|
|
case SAI_GET_LBA_STATUS:
|
|
cmd = "GET_LBA_STATUS";
|
|
break;
|
|
default:
|
|
trace_seq_printf(p, "UNKNOWN");
|
|
goto out;
|
|
}
|
|
|
|
lba |= ((u64)cdb[2] << 56);
|
|
lba |= ((u64)cdb[3] << 48);
|
|
lba |= ((u64)cdb[4] << 40);
|
|
lba |= ((u64)cdb[5] << 32);
|
|
lba |= (cdb[6] << 24);
|
|
lba |= (cdb[7] << 16);
|
|
lba |= (cdb[8] << 8);
|
|
lba |= cdb[9];
|
|
alloc_len |= (cdb[10] << 24);
|
|
alloc_len |= (cdb[11] << 16);
|
|
alloc_len |= (cdb[12] << 8);
|
|
alloc_len |= cdb[13];
|
|
|
|
trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
|
|
(unsigned long long)lba, alloc_len);
|
|
|
|
out:
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
switch (SERVICE_ACTION32(cdb)) {
|
|
case READ_32:
|
|
case VERIFY_32:
|
|
case WRITE_32:
|
|
case WRITE_SAME_32:
|
|
return scsi_trace_rw32(p, cdb, len);
|
|
default:
|
|
return scsi_trace_misc(p, cdb, len);
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
const char *ret = p->buffer + p->len;
|
|
|
|
trace_seq_printf(p, "-");
|
|
trace_seq_putc(p, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const char *
|
|
scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
|
|
{
|
|
switch (cdb[0]) {
|
|
case READ_6:
|
|
case WRITE_6:
|
|
return scsi_trace_rw6(p, cdb, len);
|
|
case READ_10:
|
|
case VERIFY:
|
|
case WRITE_10:
|
|
case WRITE_SAME:
|
|
return scsi_trace_rw10(p, cdb, len);
|
|
case READ_12:
|
|
case VERIFY_12:
|
|
case WRITE_12:
|
|
return scsi_trace_rw12(p, cdb, len);
|
|
case READ_16:
|
|
case VERIFY_16:
|
|
case WRITE_16:
|
|
case WRITE_SAME_16:
|
|
return scsi_trace_rw16(p, cdb, len);
|
|
case UNMAP:
|
|
return scsi_trace_unmap(p, cdb, len);
|
|
case SERVICE_ACTION_IN:
|
|
return scsi_trace_service_action_in(p, cdb, len);
|
|
case VARIABLE_LENGTH_CMD:
|
|
return scsi_trace_varlen(p, cdb, len);
|
|
default:
|
|
return scsi_trace_misc(p, cdb, len);
|
|
}
|
|
}
|