Qemu will crash with the assertion error that "assert(r->req.aiocb != NULL)" in scsi_read_complete if request is invaild or disk is no medium. The error is below: qemu-kvm: hw/scsi/scsi_disk.c:299: scsi_read_complete: Assertion `r->req.aiocb != NULL' failed. This patch add a funtion scsi_read_complete_noio to fix it. Signed-off-by: Zhengui Li <lizhengui@huawei.com> Message-Id: <1551949966-20092-1-git-send-email-lizhengui@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3117 lines
96 KiB
C
3117 lines
96 KiB
C
/*
|
|
* SCSI Device emulation
|
|
*
|
|
* Copyright (c) 2006 CodeSourcery.
|
|
* Based on code by Fabrice Bellard
|
|
*
|
|
* Written by Paul Brook
|
|
* Modifications:
|
|
* 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
|
|
* when the allocation length of CDB is smaller
|
|
* than 36.
|
|
* 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
|
|
* MODE SENSE response.
|
|
*
|
|
* This code is licensed under the LGPL.
|
|
*
|
|
* Note that this file only handles the SCSI architecture model and device
|
|
* commands. Emulation of interface/link layer protocols is handled by
|
|
* the host adapter emulator.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/units.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/error-report.h"
|
|
#include "hw/scsi/scsi.h"
|
|
#include "hw/scsi/emulation.h"
|
|
#include "scsi/constants.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "sysemu/block-backend.h"
|
|
#include "sysemu/blockdev.h"
|
|
#include "hw/block/block.h"
|
|
#include "sysemu/dma.h"
|
|
#include "qemu/cutils.h"
|
|
#include "trace.h"
|
|
|
|
#ifdef __linux
|
|
#include <scsi/sg.h>
|
|
#endif
|
|
|
|
#define SCSI_WRITE_SAME_MAX (512 * KiB)
|
|
#define SCSI_DMA_BUF_SIZE (128 * KiB)
|
|
#define SCSI_MAX_INQUIRY_LEN 256
|
|
#define SCSI_MAX_MODE_LEN 256
|
|
|
|
#define DEFAULT_DISCARD_GRANULARITY (4 * KiB)
|
|
#define DEFAULT_MAX_UNMAP_SIZE (1 * GiB)
|
|
#define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */
|
|
|
|
#define TYPE_SCSI_DISK_BASE "scsi-disk-base"
|
|
|
|
#define SCSI_DISK_BASE(obj) \
|
|
OBJECT_CHECK(SCSIDiskState, (obj), TYPE_SCSI_DISK_BASE)
|
|
#define SCSI_DISK_BASE_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(SCSIDiskClass, (klass), TYPE_SCSI_DISK_BASE)
|
|
#define SCSI_DISK_BASE_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(SCSIDiskClass, (obj), TYPE_SCSI_DISK_BASE)
|
|
|
|
typedef struct SCSIDiskClass {
|
|
SCSIDeviceClass parent_class;
|
|
DMAIOFunc *dma_readv;
|
|
DMAIOFunc *dma_writev;
|
|
bool (*need_fua_emulation)(SCSICommand *cmd);
|
|
} SCSIDiskClass;
|
|
|
|
typedef struct SCSIDiskReq {
|
|
SCSIRequest req;
|
|
/* Both sector and sector_count are in terms of qemu 512 byte blocks. */
|
|
uint64_t sector;
|
|
uint32_t sector_count;
|
|
uint32_t buflen;
|
|
bool started;
|
|
bool need_fua_emulation;
|
|
struct iovec iov;
|
|
QEMUIOVector qiov;
|
|
BlockAcctCookie acct;
|
|
unsigned char *status;
|
|
} SCSIDiskReq;
|
|
|
|
#define SCSI_DISK_F_REMOVABLE 0
|
|
#define SCSI_DISK_F_DPOFUA 1
|
|
#define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
|
|
|
|
typedef struct SCSIDiskState
|
|
{
|
|
SCSIDevice qdev;
|
|
uint32_t features;
|
|
bool media_changed;
|
|
bool media_event;
|
|
bool eject_request;
|
|
uint16_t port_index;
|
|
uint64_t max_unmap_size;
|
|
uint64_t max_io_size;
|
|
QEMUBH *bh;
|
|
char *version;
|
|
char *serial;
|
|
char *vendor;
|
|
char *product;
|
|
char *device_id;
|
|
bool tray_open;
|
|
bool tray_locked;
|
|
/*
|
|
* 0x0000 - rotation rate not reported
|
|
* 0x0001 - non-rotating medium (SSD)
|
|
* 0x0002-0x0400 - reserved
|
|
* 0x0401-0xffe - rotations per minute
|
|
* 0xffff - reserved
|
|
*/
|
|
uint16_t rotation_rate;
|
|
} SCSIDiskState;
|
|
|
|
static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed);
|
|
|
|
static void scsi_free_request(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
qemu_vfree(r->iov.iov_base);
|
|
}
|
|
|
|
/* Helper function for command completion with sense. */
|
|
static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
|
|
{
|
|
trace_scsi_disk_check_condition(r->req.tag, sense.key, sense.asc,
|
|
sense.ascq);
|
|
scsi_req_build_sense(&r->req, sense);
|
|
scsi_req_complete(&r->req, CHECK_CONDITION);
|
|
}
|
|
|
|
static void scsi_init_iovec(SCSIDiskReq *r, size_t size)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
if (!r->iov.iov_base) {
|
|
r->buflen = size;
|
|
r->iov.iov_base = blk_blockalign(s->qdev.conf.blk, r->buflen);
|
|
}
|
|
r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
|
|
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
|
|
}
|
|
|
|
static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
qemu_put_be64s(f, &r->sector);
|
|
qemu_put_be32s(f, &r->sector_count);
|
|
qemu_put_be32s(f, &r->buflen);
|
|
if (r->buflen) {
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
|
|
} else if (!req->retry) {
|
|
uint32_t len = r->iov.iov_len;
|
|
qemu_put_be32s(f, &len);
|
|
qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
qemu_get_be64s(f, &r->sector);
|
|
qemu_get_be32s(f, &r->sector_count);
|
|
qemu_get_be32s(f, &r->buflen);
|
|
if (r->buflen) {
|
|
scsi_init_iovec(r, r->buflen);
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
|
|
} else if (!r->req.retry) {
|
|
uint32_t len;
|
|
qemu_get_be32s(f, &len);
|
|
r->iov.iov_len = len;
|
|
assert(r->iov.iov_len <= r->buflen);
|
|
qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
|
|
}
|
|
}
|
|
|
|
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
|
|
}
|
|
|
|
static bool scsi_disk_req_check_error(SCSIDiskReq *r, int ret, bool acct_failed)
|
|
{
|
|
if (r->req.io_canceled) {
|
|
scsi_req_cancel_complete(&r->req);
|
|
return true;
|
|
}
|
|
|
|
if (ret < 0 || (r->status && *r->status)) {
|
|
return scsi_handle_rw_error(r, -ret, acct_failed);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void scsi_aio_complete(void *opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert(r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
if (scsi_disk_req_check_error(r, ret, true)) {
|
|
goto done;
|
|
}
|
|
|
|
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
scsi_req_complete(&r->req, GOOD);
|
|
|
|
done:
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
scsi_req_unref(&r->req);
|
|
}
|
|
|
|
static bool scsi_is_cmd_fua(SCSICommand *cmd)
|
|
{
|
|
switch (cmd->buf[0]) {
|
|
case READ_10:
|
|
case READ_12:
|
|
case READ_16:
|
|
case WRITE_10:
|
|
case WRITE_12:
|
|
case WRITE_16:
|
|
return (cmd->buf[1] & 8) != 0;
|
|
|
|
case VERIFY_10:
|
|
case VERIFY_12:
|
|
case VERIFY_16:
|
|
case WRITE_VERIFY_10:
|
|
case WRITE_VERIFY_12:
|
|
case WRITE_VERIFY_16:
|
|
return true;
|
|
|
|
case READ_6:
|
|
case WRITE_6:
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static void scsi_write_do_fua(SCSIDiskReq *r)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert(r->req.aiocb == NULL);
|
|
assert(!r->req.io_canceled);
|
|
|
|
if (r->need_fua_emulation) {
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
|
|
BLOCK_ACCT_FLUSH);
|
|
r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
|
|
return;
|
|
}
|
|
|
|
scsi_req_complete(&r->req, GOOD);
|
|
scsi_req_unref(&r->req);
|
|
}
|
|
|
|
static void scsi_dma_complete_noio(SCSIDiskReq *r, int ret)
|
|
{
|
|
assert(r->req.aiocb == NULL);
|
|
if (scsi_disk_req_check_error(r, ret, false)) {
|
|
goto done;
|
|
}
|
|
|
|
r->sector += r->sector_count;
|
|
r->sector_count = 0;
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
scsi_write_do_fua(r);
|
|
return;
|
|
} else {
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
|
|
done:
|
|
scsi_req_unref(&r->req);
|
|
}
|
|
|
|
static void scsi_dma_complete(void *opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert(r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
if (ret < 0) {
|
|
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
} else {
|
|
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
}
|
|
scsi_dma_complete_noio(r, ret);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
}
|
|
|
|
static void scsi_read_complete_noio(SCSIDiskReq *r, int ret)
|
|
{
|
|
uint32_t n;
|
|
|
|
assert(r->req.aiocb == NULL);
|
|
if (scsi_disk_req_check_error(r, ret, false)) {
|
|
goto done;
|
|
}
|
|
|
|
n = r->qiov.size / 512;
|
|
r->sector += n;
|
|
r->sector_count -= n;
|
|
scsi_req_data(&r->req, r->qiov.size);
|
|
|
|
done:
|
|
scsi_req_unref(&r->req);
|
|
}
|
|
|
|
static void scsi_read_complete(void *opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert(r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
if (ret < 0) {
|
|
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
} else {
|
|
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
trace_scsi_disk_read_complete(r->req.tag, r->qiov.size);
|
|
}
|
|
scsi_read_complete_noio(r, ret);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
}
|
|
|
|
/* Actually issue a read to the block device. */
|
|
static void scsi_do_read(SCSIDiskReq *r, int ret)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
|
|
|
|
assert (r->req.aiocb == NULL);
|
|
if (scsi_disk_req_check_error(r, ret, false)) {
|
|
goto done;
|
|
}
|
|
|
|
/* The request is used as the AIO opaque value, so add a ref. */
|
|
scsi_req_ref(&r->req);
|
|
|
|
if (r->req.sg) {
|
|
dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_READ);
|
|
r->req.resid -= r->req.sg->size;
|
|
r->req.aiocb = dma_blk_io(blk_get_aio_context(s->qdev.conf.blk),
|
|
r->req.sg, r->sector << BDRV_SECTOR_BITS,
|
|
BDRV_SECTOR_SIZE,
|
|
sdc->dma_readv, r, scsi_dma_complete, r,
|
|
DMA_DIRECTION_FROM_DEVICE);
|
|
} else {
|
|
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
|
|
r->qiov.size, BLOCK_ACCT_READ);
|
|
r->req.aiocb = sdc->dma_readv(r->sector << BDRV_SECTOR_BITS, &r->qiov,
|
|
scsi_read_complete, r, r);
|
|
}
|
|
|
|
done:
|
|
scsi_req_unref(&r->req);
|
|
}
|
|
|
|
static void scsi_do_read_cb(void *opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert (r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
if (ret < 0) {
|
|
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
} else {
|
|
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
}
|
|
scsi_do_read(opaque, ret);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
}
|
|
|
|
/* Read more data from scsi device into buffer. */
|
|
static void scsi_read_data(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
bool first;
|
|
|
|
trace_scsi_disk_read_data_count(r->sector_count);
|
|
if (r->sector_count == 0) {
|
|
/* This also clears the sense buffer for REQUEST SENSE. */
|
|
scsi_req_complete(&r->req, GOOD);
|
|
return;
|
|
}
|
|
|
|
/* No data transfer may already be in progress */
|
|
assert(r->req.aiocb == NULL);
|
|
|
|
/* The request is used as the AIO opaque value, so add a ref. */
|
|
scsi_req_ref(&r->req);
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
trace_scsi_disk_read_data_invalid();
|
|
scsi_read_complete_noio(r, -EINVAL);
|
|
return;
|
|
}
|
|
|
|
if (!blk_is_available(req->dev->conf.blk)) {
|
|
scsi_read_complete_noio(r, -ENOMEDIUM);
|
|
return;
|
|
}
|
|
|
|
first = !r->started;
|
|
r->started = true;
|
|
if (first && r->need_fua_emulation) {
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
|
|
BLOCK_ACCT_FLUSH);
|
|
r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_do_read_cb, r);
|
|
} else {
|
|
scsi_do_read(r, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* scsi_handle_rw_error has two return values. False means that the error
|
|
* must be ignored, true means that the error has been processed and the
|
|
* caller should not do anything else for this request. Note that
|
|
* scsi_handle_rw_error always manages its reference counts, independent
|
|
* of the return value.
|
|
*/
|
|
static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
|
|
{
|
|
bool is_read = (r->req.cmd.mode == SCSI_XFER_FROM_DEV);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
BlockErrorAction action = blk_get_error_action(s->qdev.conf.blk,
|
|
is_read, error);
|
|
|
|
if (action == BLOCK_ERROR_ACTION_REPORT) {
|
|
if (acct_failed) {
|
|
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
}
|
|
switch (error) {
|
|
case 0:
|
|
/* A passthrough command has run and has produced sense data; check
|
|
* whether the error has to be handled by the guest or should rather
|
|
* pause the host.
|
|
*/
|
|
assert(r->status && *r->status);
|
|
error = scsi_sense_buf_to_errno(r->req.sense, sizeof(r->req.sense));
|
|
if (error == ECANCELED || error == EAGAIN || error == ENOTCONN ||
|
|
error == 0) {
|
|
/* These errors are handled by guest. */
|
|
scsi_req_complete(&r->req, *r->status);
|
|
return true;
|
|
}
|
|
break;
|
|
case ENOMEDIUM:
|
|
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
|
|
break;
|
|
case ENOMEM:
|
|
scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
|
|
break;
|
|
case EINVAL:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
break;
|
|
case ENOSPC:
|
|
scsi_check_condition(r, SENSE_CODE(SPACE_ALLOC_FAILED));
|
|
break;
|
|
default:
|
|
scsi_check_condition(r, SENSE_CODE(IO_ERROR));
|
|
break;
|
|
}
|
|
}
|
|
|
|
blk_error_action(s->qdev.conf.blk, action, is_read, error);
|
|
if (action == BLOCK_ERROR_ACTION_IGNORE) {
|
|
scsi_req_complete(&r->req, 0);
|
|
return true;
|
|
}
|
|
|
|
if (action == BLOCK_ERROR_ACTION_STOP) {
|
|
scsi_req_retry(&r->req);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void scsi_write_complete_noio(SCSIDiskReq *r, int ret)
|
|
{
|
|
uint32_t n;
|
|
|
|
assert (r->req.aiocb == NULL);
|
|
if (scsi_disk_req_check_error(r, ret, false)) {
|
|
goto done;
|
|
}
|
|
|
|
n = r->qiov.size / 512;
|
|
r->sector += n;
|
|
r->sector_count -= n;
|
|
if (r->sector_count == 0) {
|
|
scsi_write_do_fua(r);
|
|
return;
|
|
} else {
|
|
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
|
|
trace_scsi_disk_write_complete_noio(r->req.tag, r->qiov.size);
|
|
scsi_req_data(&r->req, r->qiov.size);
|
|
}
|
|
|
|
done:
|
|
scsi_req_unref(&r->req);
|
|
}
|
|
|
|
static void scsi_write_complete(void * opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert (r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
if (ret < 0) {
|
|
block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
} else {
|
|
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
}
|
|
scsi_write_complete_noio(r, ret);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
}
|
|
|
|
static void scsi_write_data(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
|
|
|
|
/* No data transfer may already be in progress */
|
|
assert(r->req.aiocb == NULL);
|
|
|
|
/* The request is used as the AIO opaque value, so add a ref. */
|
|
scsi_req_ref(&r->req);
|
|
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
|
|
trace_scsi_disk_write_data_invalid();
|
|
scsi_write_complete_noio(r, -EINVAL);
|
|
return;
|
|
}
|
|
|
|
if (!r->req.sg && !r->qiov.size) {
|
|
/* Called for the first time. Ask the driver to send us more data. */
|
|
r->started = true;
|
|
scsi_write_complete_noio(r, 0);
|
|
return;
|
|
}
|
|
if (!blk_is_available(req->dev->conf.blk)) {
|
|
scsi_write_complete_noio(r, -ENOMEDIUM);
|
|
return;
|
|
}
|
|
|
|
if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 ||
|
|
r->req.cmd.buf[0] == VERIFY_16) {
|
|
if (r->req.sg) {
|
|
scsi_dma_complete_noio(r, 0);
|
|
} else {
|
|
scsi_write_complete_noio(r, 0);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (r->req.sg) {
|
|
dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_WRITE);
|
|
r->req.resid -= r->req.sg->size;
|
|
r->req.aiocb = dma_blk_io(blk_get_aio_context(s->qdev.conf.blk),
|
|
r->req.sg, r->sector << BDRV_SECTOR_BITS,
|
|
BDRV_SECTOR_SIZE,
|
|
sdc->dma_writev, r, scsi_dma_complete, r,
|
|
DMA_DIRECTION_TO_DEVICE);
|
|
} else {
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
|
|
r->qiov.size, BLOCK_ACCT_WRITE);
|
|
r->req.aiocb = sdc->dma_writev(r->sector << BDRV_SECTOR_BITS, &r->qiov,
|
|
scsi_write_complete, r, r);
|
|
}
|
|
}
|
|
|
|
/* Return a pointer to the data buffer. */
|
|
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
return (uint8_t *)r->iov.iov_base;
|
|
}
|
|
|
|
static int scsi_disk_emulate_vpd_page(SCSIRequest *req, uint8_t *outbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
uint8_t page_code = req->cmd.buf[2];
|
|
int start, buflen = 0;
|
|
|
|
outbuf[buflen++] = s->qdev.type & 0x1f;
|
|
outbuf[buflen++] = page_code;
|
|
outbuf[buflen++] = 0x00;
|
|
outbuf[buflen++] = 0x00;
|
|
start = buflen;
|
|
|
|
switch (page_code) {
|
|
case 0x00: /* Supported page codes, mandatory */
|
|
{
|
|
trace_scsi_disk_emulate_vpd_page_00(req->cmd.xfer);
|
|
outbuf[buflen++] = 0x00; /* list of supported pages (this page) */
|
|
if (s->serial) {
|
|
outbuf[buflen++] = 0x80; /* unit serial number */
|
|
}
|
|
outbuf[buflen++] = 0x83; /* device identification */
|
|
if (s->qdev.type == TYPE_DISK) {
|
|
outbuf[buflen++] = 0xb0; /* block limits */
|
|
outbuf[buflen++] = 0xb1; /* block device characteristics */
|
|
outbuf[buflen++] = 0xb2; /* thin provisioning */
|
|
}
|
|
break;
|
|
}
|
|
case 0x80: /* Device serial number, optional */
|
|
{
|
|
int l;
|
|
|
|
if (!s->serial) {
|
|
trace_scsi_disk_emulate_vpd_page_80_not_supported();
|
|
return -1;
|
|
}
|
|
|
|
l = strlen(s->serial);
|
|
if (l > 36) {
|
|
l = 36;
|
|
}
|
|
|
|
trace_scsi_disk_emulate_vpd_page_80(req->cmd.xfer);
|
|
memcpy(outbuf + buflen, s->serial, l);
|
|
buflen += l;
|
|
break;
|
|
}
|
|
|
|
case 0x83: /* Device identification page, mandatory */
|
|
{
|
|
int id_len = s->device_id ? MIN(strlen(s->device_id), 255 - 8) : 0;
|
|
|
|
trace_scsi_disk_emulate_vpd_page_83(req->cmd.xfer);
|
|
|
|
if (id_len) {
|
|
outbuf[buflen++] = 0x2; /* ASCII */
|
|
outbuf[buflen++] = 0; /* not officially assigned */
|
|
outbuf[buflen++] = 0; /* reserved */
|
|
outbuf[buflen++] = id_len; /* length of data following */
|
|
memcpy(outbuf + buflen, s->device_id, id_len);
|
|
buflen += id_len;
|
|
}
|
|
|
|
if (s->qdev.wwn) {
|
|
outbuf[buflen++] = 0x1; /* Binary */
|
|
outbuf[buflen++] = 0x3; /* NAA */
|
|
outbuf[buflen++] = 0; /* reserved */
|
|
outbuf[buflen++] = 8;
|
|
stq_be_p(&outbuf[buflen], s->qdev.wwn);
|
|
buflen += 8;
|
|
}
|
|
|
|
if (s->qdev.port_wwn) {
|
|
outbuf[buflen++] = 0x61; /* SAS / Binary */
|
|
outbuf[buflen++] = 0x93; /* PIV / Target port / NAA */
|
|
outbuf[buflen++] = 0; /* reserved */
|
|
outbuf[buflen++] = 8;
|
|
stq_be_p(&outbuf[buflen], s->qdev.port_wwn);
|
|
buflen += 8;
|
|
}
|
|
|
|
if (s->port_index) {
|
|
outbuf[buflen++] = 0x61; /* SAS / Binary */
|
|
|
|
/* PIV/Target port/relative target port */
|
|
outbuf[buflen++] = 0x94;
|
|
|
|
outbuf[buflen++] = 0; /* reserved */
|
|
outbuf[buflen++] = 4;
|
|
stw_be_p(&outbuf[buflen + 2], s->port_index);
|
|
buflen += 4;
|
|
}
|
|
break;
|
|
}
|
|
case 0xb0: /* block limits */
|
|
{
|
|
SCSIBlockLimits bl = {};
|
|
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
trace_scsi_disk_emulate_vpd_page_b0_not_supported();
|
|
return -1;
|
|
}
|
|
bl.wsnz = 1;
|
|
bl.unmap_sectors =
|
|
s->qdev.conf.discard_granularity / s->qdev.blocksize;
|
|
bl.min_io_size =
|
|
s->qdev.conf.min_io_size / s->qdev.blocksize;
|
|
bl.opt_io_size =
|
|
s->qdev.conf.opt_io_size / s->qdev.blocksize;
|
|
bl.max_unmap_sectors =
|
|
s->max_unmap_size / s->qdev.blocksize;
|
|
bl.max_io_sectors =
|
|
s->max_io_size / s->qdev.blocksize;
|
|
/* 255 descriptors fit in 4 KiB with an 8-byte header */
|
|
bl.max_unmap_descr = 255;
|
|
|
|
if (s->qdev.type == TYPE_DISK) {
|
|
int max_transfer_blk = blk_get_max_transfer(s->qdev.conf.blk);
|
|
int max_io_sectors_blk =
|
|
max_transfer_blk / s->qdev.blocksize;
|
|
|
|
bl.max_io_sectors =
|
|
MIN_NON_ZERO(max_io_sectors_blk, bl.max_io_sectors);
|
|
}
|
|
buflen += scsi_emulate_block_limits(outbuf + buflen, &bl);
|
|
break;
|
|
}
|
|
case 0xb1: /* block device characteristics */
|
|
{
|
|
buflen = 0x40;
|
|
outbuf[4] = (s->rotation_rate >> 8) & 0xff;
|
|
outbuf[5] = s->rotation_rate & 0xff;
|
|
outbuf[6] = 0; /* PRODUCT TYPE */
|
|
outbuf[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */
|
|
outbuf[8] = 0; /* VBULS */
|
|
break;
|
|
}
|
|
case 0xb2: /* thin provisioning */
|
|
{
|
|
buflen = 8;
|
|
outbuf[4] = 0;
|
|
outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */
|
|
outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1;
|
|
outbuf[7] = 0;
|
|
break;
|
|
}
|
|
default:
|
|
return -1;
|
|
}
|
|
/* done with EVPD */
|
|
assert(buflen - start <= 255);
|
|
outbuf[start - 1] = buflen - start;
|
|
return buflen;
|
|
}
|
|
|
|
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
int buflen = 0;
|
|
|
|
if (req->cmd.buf[1] & 0x1) {
|
|
/* Vital product data */
|
|
return scsi_disk_emulate_vpd_page(req, outbuf);
|
|
}
|
|
|
|
/* Standard INQUIRY data */
|
|
if (req->cmd.buf[2] != 0) {
|
|
return -1;
|
|
}
|
|
|
|
/* PAGE CODE == 0 */
|
|
buflen = req->cmd.xfer;
|
|
if (buflen > SCSI_MAX_INQUIRY_LEN) {
|
|
buflen = SCSI_MAX_INQUIRY_LEN;
|
|
}
|
|
|
|
outbuf[0] = s->qdev.type & 0x1f;
|
|
outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0;
|
|
|
|
strpadcpy((char *) &outbuf[16], 16, s->product, ' ');
|
|
strpadcpy((char *) &outbuf[8], 8, s->vendor, ' ');
|
|
|
|
memset(&outbuf[32], 0, 4);
|
|
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version)));
|
|
/*
|
|
* We claim conformance to SPC-3, which is required for guests
|
|
* to ask for modern features like READ CAPACITY(16) or the
|
|
* block characteristics VPD page by default. Not all of SPC-3
|
|
* is actually implemented, but we're good enough.
|
|
*/
|
|
outbuf[2] = s->qdev.default_scsi_version;
|
|
outbuf[3] = 2 | 0x10; /* Format 2, HiSup */
|
|
|
|
if (buflen > 36) {
|
|
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */
|
|
} else {
|
|
/* If the allocation length of CDB is too small,
|
|
the additional length is not adjusted */
|
|
outbuf[4] = 36 - 5;
|
|
}
|
|
|
|
/* Sync data transfer and TCQ. */
|
|
outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0);
|
|
return buflen;
|
|
}
|
|
|
|
static inline bool media_is_dvd(SCSIDiskState *s)
|
|
{
|
|
uint64_t nb_sectors;
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return false;
|
|
}
|
|
if (!blk_is_available(s->qdev.conf.blk)) {
|
|
return false;
|
|
}
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
return nb_sectors > CD_MAX_SECTORS;
|
|
}
|
|
|
|
static inline bool media_is_cd(SCSIDiskState *s)
|
|
{
|
|
uint64_t nb_sectors;
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return false;
|
|
}
|
|
if (!blk_is_available(s->qdev.conf.blk)) {
|
|
return false;
|
|
}
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
return nb_sectors <= CD_MAX_SECTORS;
|
|
}
|
|
|
|
static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r,
|
|
uint8_t *outbuf)
|
|
{
|
|
uint8_t type = r->req.cmd.buf[1] & 7;
|
|
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
|
|
/* Types 1/2 are only defined for Blu-Ray. */
|
|
if (type != 0) {
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
return -1;
|
|
}
|
|
|
|
memset(outbuf, 0, 34);
|
|
outbuf[1] = 32;
|
|
outbuf[2] = 0xe; /* last session complete, disc finalized */
|
|
outbuf[3] = 1; /* first track on disc */
|
|
outbuf[4] = 1; /* # of sessions */
|
|
outbuf[5] = 1; /* first track of last session */
|
|
outbuf[6] = 1; /* last track of last session */
|
|
outbuf[7] = 0x20; /* unrestricted use */
|
|
outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */
|
|
/* 9-10-11: most significant byte corresponding bytes 4-5-6 */
|
|
/* 12-23: not meaningful for CD-ROM or DVD-ROM */
|
|
/* 24-31: disc bar code */
|
|
/* 32: disc application code */
|
|
/* 33: number of OPC tables */
|
|
|
|
return 34;
|
|
}
|
|
|
|
static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r,
|
|
uint8_t *outbuf)
|
|
{
|
|
static const int rds_caps_size[5] = {
|
|
[0] = 2048 + 4,
|
|
[1] = 4 + 4,
|
|
[3] = 188 + 4,
|
|
[4] = 2048 + 4,
|
|
};
|
|
|
|
uint8_t media = r->req.cmd.buf[1];
|
|
uint8_t layer = r->req.cmd.buf[6];
|
|
uint8_t format = r->req.cmd.buf[7];
|
|
int size = -1;
|
|
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
if (media != 0) {
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
return -1;
|
|
}
|
|
|
|
if (format != 0xff) {
|
|
if (!blk_is_available(s->qdev.conf.blk)) {
|
|
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
|
|
return -1;
|
|
}
|
|
if (media_is_cd(s)) {
|
|
scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT));
|
|
return -1;
|
|
}
|
|
if (format >= ARRAY_SIZE(rds_caps_size)) {
|
|
return -1;
|
|
}
|
|
size = rds_caps_size[format];
|
|
memset(outbuf, 0, size);
|
|
}
|
|
|
|
switch (format) {
|
|
case 0x00: {
|
|
/* Physical format information */
|
|
uint64_t nb_sectors;
|
|
if (layer != 0) {
|
|
goto fail;
|
|
}
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
|
|
outbuf[4] = 1; /* DVD-ROM, part version 1 */
|
|
outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
|
|
outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
|
|
outbuf[7] = 0; /* default densities */
|
|
|
|
stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */
|
|
stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */
|
|
break;
|
|
}
|
|
|
|
case 0x01: /* DVD copyright information, all zeros */
|
|
break;
|
|
|
|
case 0x03: /* BCA information - invalid field for no BCA info */
|
|
return -1;
|
|
|
|
case 0x04: /* DVD disc manufacturing information, all zeros */
|
|
break;
|
|
|
|
case 0xff: { /* List capabilities */
|
|
int i;
|
|
size = 4;
|
|
for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) {
|
|
if (!rds_caps_size[i]) {
|
|
continue;
|
|
}
|
|
outbuf[size] = i;
|
|
outbuf[size + 1] = 0x40; /* Not writable, readable */
|
|
stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
|
|
size += 4;
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
/* Size of buffer, not including 2 byte size field */
|
|
stw_be_p(outbuf, size - 2);
|
|
return size;
|
|
|
|
fail:
|
|
return -1;
|
|
}
|
|
|
|
static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf)
|
|
{
|
|
uint8_t event_code, media_status;
|
|
|
|
media_status = 0;
|
|
if (s->tray_open) {
|
|
media_status = MS_TRAY_OPEN;
|
|
} else if (blk_is_inserted(s->qdev.conf.blk)) {
|
|
media_status = MS_MEDIA_PRESENT;
|
|
}
|
|
|
|
/* Event notification descriptor */
|
|
event_code = MEC_NO_CHANGE;
|
|
if (media_status != MS_TRAY_OPEN) {
|
|
if (s->media_event) {
|
|
event_code = MEC_NEW_MEDIA;
|
|
s->media_event = false;
|
|
} else if (s->eject_request) {
|
|
event_code = MEC_EJECT_REQUESTED;
|
|
s->eject_request = false;
|
|
}
|
|
}
|
|
|
|
outbuf[0] = event_code;
|
|
outbuf[1] = media_status;
|
|
|
|
/* These fields are reserved, just clear them. */
|
|
outbuf[2] = 0;
|
|
outbuf[3] = 0;
|
|
return 4;
|
|
}
|
|
|
|
static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r,
|
|
uint8_t *outbuf)
|
|
{
|
|
int size;
|
|
uint8_t *buf = r->req.cmd.buf;
|
|
uint8_t notification_class_request = buf[4];
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
if ((buf[1] & 1) == 0) {
|
|
/* asynchronous */
|
|
return -1;
|
|
}
|
|
|
|
size = 4;
|
|
outbuf[0] = outbuf[1] = 0;
|
|
outbuf[3] = 1 << GESN_MEDIA; /* supported events */
|
|
if (notification_class_request & (1 << GESN_MEDIA)) {
|
|
outbuf[2] = GESN_MEDIA;
|
|
size += scsi_event_status_media(s, &outbuf[size]);
|
|
} else {
|
|
outbuf[2] = 0x80;
|
|
}
|
|
stw_be_p(outbuf, size - 4);
|
|
return size;
|
|
}
|
|
|
|
static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf)
|
|
{
|
|
int current;
|
|
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
|
|
if (media_is_dvd(s)) {
|
|
current = MMC_PROFILE_DVD_ROM;
|
|
} else if (media_is_cd(s)) {
|
|
current = MMC_PROFILE_CD_ROM;
|
|
} else {
|
|
current = MMC_PROFILE_NONE;
|
|
}
|
|
|
|
memset(outbuf, 0, 40);
|
|
stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */
|
|
stw_be_p(&outbuf[6], current);
|
|
/* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
|
|
outbuf[10] = 0x03; /* persistent, current */
|
|
outbuf[11] = 8; /* two profiles */
|
|
stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
|
|
outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
|
|
stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
|
|
outbuf[18] = (current == MMC_PROFILE_CD_ROM);
|
|
/* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
|
|
stw_be_p(&outbuf[20], 1);
|
|
outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */
|
|
outbuf[23] = 8;
|
|
stl_be_p(&outbuf[24], 1); /* SCSI */
|
|
outbuf[28] = 1; /* DBE = 1, mandatory */
|
|
/* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
|
|
stw_be_p(&outbuf[32], 3);
|
|
outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */
|
|
outbuf[35] = 4;
|
|
outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
|
|
/* TODO: Random readable, CD read, DVD read, drive serial number,
|
|
power management */
|
|
return 40;
|
|
}
|
|
|
|
static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf)
|
|
{
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
memset(outbuf, 0, 8);
|
|
outbuf[5] = 1; /* CD-ROM */
|
|
return 8;
|
|
}
|
|
|
|
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
|
|
int page_control)
|
|
{
|
|
static const int mode_sense_valid[0x3f] = {
|
|
[MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
|
|
[MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
|
|
[MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM),
|
|
[MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM),
|
|
[MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
|
|
[MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
|
|
};
|
|
|
|
uint8_t *p = *p_outbuf + 2;
|
|
int length;
|
|
|
|
if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) {
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* If Changeable Values are requested, a mask denoting those mode parameters
|
|
* that are changeable shall be returned. As we currently don't support
|
|
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
|
* The buffer was already menset to zero by the caller of this function.
|
|
*
|
|
* The offsets here are off by two compared to the descriptions in the
|
|
* SCSI specs, because those include a 2-byte header. This is unfortunate,
|
|
* but it is done so that offsets are consistent within our implementation
|
|
* of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
|
|
* 2-byte and 4-byte headers.
|
|
*/
|
|
switch (page) {
|
|
case MODE_PAGE_HD_GEOMETRY:
|
|
length = 0x16;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
/* if a geometry hint is available, use it */
|
|
p[0] = (s->qdev.conf.cyls >> 16) & 0xff;
|
|
p[1] = (s->qdev.conf.cyls >> 8) & 0xff;
|
|
p[2] = s->qdev.conf.cyls & 0xff;
|
|
p[3] = s->qdev.conf.heads & 0xff;
|
|
/* Write precomp start cylinder, disabled */
|
|
p[4] = (s->qdev.conf.cyls >> 16) & 0xff;
|
|
p[5] = (s->qdev.conf.cyls >> 8) & 0xff;
|
|
p[6] = s->qdev.conf.cyls & 0xff;
|
|
/* Reduced current start cylinder, disabled */
|
|
p[7] = (s->qdev.conf.cyls >> 16) & 0xff;
|
|
p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
|
|
p[9] = s->qdev.conf.cyls & 0xff;
|
|
/* Device step rate [ns], 200ns */
|
|
p[10] = 0;
|
|
p[11] = 200;
|
|
/* Landing zone cylinder */
|
|
p[12] = 0xff;
|
|
p[13] = 0xff;
|
|
p[14] = 0xff;
|
|
/* Medium rotation rate [rpm], 5400 rpm */
|
|
p[18] = (5400 >> 8) & 0xff;
|
|
p[19] = 5400 & 0xff;
|
|
break;
|
|
|
|
case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
|
|
length = 0x1e;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
/* Transfer rate [kbit/s], 5Mbit/s */
|
|
p[0] = 5000 >> 8;
|
|
p[1] = 5000 & 0xff;
|
|
/* if a geometry hint is available, use it */
|
|
p[2] = s->qdev.conf.heads & 0xff;
|
|
p[3] = s->qdev.conf.secs & 0xff;
|
|
p[4] = s->qdev.blocksize >> 8;
|
|
p[6] = (s->qdev.conf.cyls >> 8) & 0xff;
|
|
p[7] = s->qdev.conf.cyls & 0xff;
|
|
/* Write precomp start cylinder, disabled */
|
|
p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
|
|
p[9] = s->qdev.conf.cyls & 0xff;
|
|
/* Reduced current start cylinder, disabled */
|
|
p[10] = (s->qdev.conf.cyls >> 8) & 0xff;
|
|
p[11] = s->qdev.conf.cyls & 0xff;
|
|
/* Device step rate [100us], 100us */
|
|
p[12] = 0;
|
|
p[13] = 1;
|
|
/* Device step pulse width [us], 1us */
|
|
p[14] = 1;
|
|
/* Device head settle delay [100us], 100us */
|
|
p[15] = 0;
|
|
p[16] = 1;
|
|
/* Motor on delay [0.1s], 0.1s */
|
|
p[17] = 1;
|
|
/* Motor off delay [0.1s], 0.1s */
|
|
p[18] = 1;
|
|
/* Medium rotation rate [rpm], 5400 rpm */
|
|
p[26] = (5400 >> 8) & 0xff;
|
|
p[27] = 5400 & 0xff;
|
|
break;
|
|
|
|
case MODE_PAGE_CACHING:
|
|
length = 0x12;
|
|
if (page_control == 1 || /* Changeable Values */
|
|
blk_enable_write_cache(s->qdev.conf.blk)) {
|
|
p[0] = 4; /* WCE */
|
|
}
|
|
break;
|
|
|
|
case MODE_PAGE_R_W_ERROR:
|
|
length = 10;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
p[0] = 0x80; /* Automatic Write Reallocation Enabled */
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
p[1] = 0x20; /* Read Retry Count */
|
|
}
|
|
break;
|
|
|
|
case MODE_PAGE_AUDIO_CTL:
|
|
length = 14;
|
|
break;
|
|
|
|
case MODE_PAGE_CAPABILITIES:
|
|
length = 0x14;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
|
|
p[0] = 0x3b; /* CD-R & CD-RW read */
|
|
p[1] = 0; /* Writing not supported */
|
|
p[2] = 0x7f; /* Audio, composite, digital out,
|
|
mode 2 form 1&2, multi session */
|
|
p[3] = 0xff; /* CD DA, DA accurate, RW supported,
|
|
RW corrected, C2 errors, ISRC,
|
|
UPC, Bar code */
|
|
p[4] = 0x2d | (s->tray_locked ? 2 : 0);
|
|
/* Locking supported, jumper present, eject, tray */
|
|
p[5] = 0; /* no volume & mute control, no
|
|
changer */
|
|
p[6] = (50 * 176) >> 8; /* 50x read speed */
|
|
p[7] = (50 * 176) & 0xff;
|
|
p[8] = 2 >> 8; /* Two volume levels */
|
|
p[9] = 2 & 0xff;
|
|
p[10] = 2048 >> 8; /* 2M buffer */
|
|
p[11] = 2048 & 0xff;
|
|
p[12] = (16 * 176) >> 8; /* 16x read speed current */
|
|
p[13] = (16 * 176) & 0xff;
|
|
p[16] = (16 * 176) >> 8; /* 16x write speed */
|
|
p[17] = (16 * 176) & 0xff;
|
|
p[18] = (16 * 176) >> 8; /* 16x write speed current */
|
|
p[19] = (16 * 176) & 0xff;
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
assert(length < 256);
|
|
(*p_outbuf)[0] = page;
|
|
(*p_outbuf)[1] = length;
|
|
*p_outbuf += length + 2;
|
|
return length + 2;
|
|
}
|
|
|
|
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
uint64_t nb_sectors;
|
|
bool dbd;
|
|
int page, buflen, ret, page_control;
|
|
uint8_t *p;
|
|
uint8_t dev_specific_param;
|
|
|
|
dbd = (r->req.cmd.buf[1] & 0x8) != 0;
|
|
page = r->req.cmd.buf[2] & 0x3f;
|
|
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6;
|
|
|
|
trace_scsi_disk_emulate_mode_sense((r->req.cmd.buf[0] == MODE_SENSE) ? 6 :
|
|
10, page, r->req.cmd.xfer, page_control);
|
|
memset(outbuf, 0, r->req.cmd.xfer);
|
|
p = outbuf;
|
|
|
|
if (s->qdev.type == TYPE_DISK) {
|
|
dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0;
|
|
if (blk_is_read_only(s->qdev.conf.blk)) {
|
|
dev_specific_param |= 0x80; /* Readonly. */
|
|
}
|
|
} else {
|
|
/* MMC prescribes that CD/DVD drives have no block descriptors,
|
|
* and defines no device-specific parameter. */
|
|
dev_specific_param = 0x00;
|
|
dbd = true;
|
|
}
|
|
|
|
if (r->req.cmd.buf[0] == MODE_SENSE) {
|
|
p[1] = 0; /* Default media type. */
|
|
p[2] = dev_specific_param;
|
|
p[3] = 0; /* Block descriptor length. */
|
|
p += 4;
|
|
} else { /* MODE_SENSE_10 */
|
|
p[2] = 0; /* Default media type. */
|
|
p[3] = dev_specific_param;
|
|
p[6] = p[7] = 0; /* Block descriptor length. */
|
|
p += 8;
|
|
}
|
|
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
if (!dbd && nb_sectors) {
|
|
if (r->req.cmd.buf[0] == MODE_SENSE) {
|
|
outbuf[3] = 8; /* Block descriptor length */
|
|
} else { /* MODE_SENSE_10 */
|
|
outbuf[7] = 8; /* Block descriptor length */
|
|
}
|
|
nb_sectors /= (s->qdev.blocksize / 512);
|
|
if (nb_sectors > 0xffffff) {
|
|
nb_sectors = 0;
|
|
}
|
|
p[0] = 0; /* media density code */
|
|
p[1] = (nb_sectors >> 16) & 0xff;
|
|
p[2] = (nb_sectors >> 8) & 0xff;
|
|
p[3] = nb_sectors & 0xff;
|
|
p[4] = 0; /* reserved */
|
|
p[5] = 0; /* bytes 5-7 are the sector size in bytes */
|
|
p[6] = s->qdev.blocksize >> 8;
|
|
p[7] = 0;
|
|
p += 8;
|
|
}
|
|
|
|
if (page_control == 3) {
|
|
/* Saved Values */
|
|
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED));
|
|
return -1;
|
|
}
|
|
|
|
if (page == 0x3f) {
|
|
for (page = 0; page <= 0x3e; page++) {
|
|
mode_sense_page(s, page, &p, page_control);
|
|
}
|
|
} else {
|
|
ret = mode_sense_page(s, page, &p, page_control);
|
|
if (ret == -1) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
buflen = p - outbuf;
|
|
/*
|
|
* The mode data length field specifies the length in bytes of the
|
|
* following data that is available to be transferred. The mode data
|
|
* length does not include itself.
|
|
*/
|
|
if (r->req.cmd.buf[0] == MODE_SENSE) {
|
|
outbuf[0] = buflen - 1;
|
|
} else { /* MODE_SENSE_10 */
|
|
outbuf[0] = ((buflen - 2) >> 8) & 0xff;
|
|
outbuf[1] = (buflen - 2) & 0xff;
|
|
}
|
|
return buflen;
|
|
}
|
|
|
|
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
int start_track, format, msf, toclen;
|
|
uint64_t nb_sectors;
|
|
|
|
msf = req->cmd.buf[1] & 2;
|
|
format = req->cmd.buf[2] & 0xf;
|
|
start_track = req->cmd.buf[6];
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
trace_scsi_disk_emulate_read_toc(start_track, format, msf >> 1);
|
|
nb_sectors /= s->qdev.blocksize / 512;
|
|
switch (format) {
|
|
case 0:
|
|
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track);
|
|
break;
|
|
case 1:
|
|
/* multi session : only a single session defined */
|
|
toclen = 12;
|
|
memset(outbuf, 0, 12);
|
|
outbuf[1] = 0x0a;
|
|
outbuf[2] = 0x01;
|
|
outbuf[3] = 0x01;
|
|
break;
|
|
case 2:
|
|
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track);
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
return toclen;
|
|
}
|
|
|
|
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r)
|
|
{
|
|
SCSIRequest *req = &r->req;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
bool start = req->cmd.buf[4] & 1;
|
|
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */
|
|
int pwrcnd = req->cmd.buf[4] & 0xf0;
|
|
|
|
if (pwrcnd) {
|
|
/* eject/load only happens for power condition == 0 */
|
|
return 0;
|
|
}
|
|
|
|
if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) {
|
|
if (!start && !s->tray_open && s->tray_locked) {
|
|
scsi_check_condition(r,
|
|
blk_is_inserted(s->qdev.conf.blk)
|
|
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED)
|
|
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED));
|
|
return -1;
|
|
}
|
|
|
|
if (s->tray_open != !start) {
|
|
blk_eject(s->qdev.conf.blk, !start);
|
|
s->tray_open = !start;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void scsi_disk_emulate_read_data(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
int buflen = r->iov.iov_len;
|
|
|
|
if (buflen) {
|
|
trace_scsi_disk_emulate_read_data(buflen);
|
|
r->iov.iov_len = 0;
|
|
r->started = true;
|
|
scsi_req_data(&r->req, buflen);
|
|
return;
|
|
}
|
|
|
|
/* This also clears the sense buffer for REQUEST SENSE. */
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
|
|
static int scsi_disk_check_mode_select(SCSIDiskState *s, int page,
|
|
uint8_t *inbuf, int inlen)
|
|
{
|
|
uint8_t mode_current[SCSI_MAX_MODE_LEN];
|
|
uint8_t mode_changeable[SCSI_MAX_MODE_LEN];
|
|
uint8_t *p;
|
|
int len, expected_len, changeable_len, i;
|
|
|
|
/* The input buffer does not include the page header, so it is
|
|
* off by 2 bytes.
|
|
*/
|
|
expected_len = inlen + 2;
|
|
if (expected_len > SCSI_MAX_MODE_LEN) {
|
|
return -1;
|
|
}
|
|
|
|
p = mode_current;
|
|
memset(mode_current, 0, inlen + 2);
|
|
len = mode_sense_page(s, page, &p, 0);
|
|
if (len < 0 || len != expected_len) {
|
|
return -1;
|
|
}
|
|
|
|
p = mode_changeable;
|
|
memset(mode_changeable, 0, inlen + 2);
|
|
changeable_len = mode_sense_page(s, page, &p, 1);
|
|
assert(changeable_len == len);
|
|
|
|
/* Check that unchangeable bits are the same as what MODE SENSE
|
|
* would return.
|
|
*/
|
|
for (i = 2; i < len; i++) {
|
|
if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p)
|
|
{
|
|
switch (page) {
|
|
case MODE_PAGE_CACHING:
|
|
blk_set_enable_write_cache(s->qdev.conf.blk, (p[0] & 4) != 0);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
while (len > 0) {
|
|
int page, subpage, page_len;
|
|
|
|
/* Parse both possible formats for the mode page headers. */
|
|
page = p[0] & 0x3f;
|
|
if (p[0] & 0x40) {
|
|
if (len < 4) {
|
|
goto invalid_param_len;
|
|
}
|
|
subpage = p[1];
|
|
page_len = lduw_be_p(&p[2]);
|
|
p += 4;
|
|
len -= 4;
|
|
} else {
|
|
if (len < 2) {
|
|
goto invalid_param_len;
|
|
}
|
|
subpage = 0;
|
|
page_len = p[1];
|
|
p += 2;
|
|
len -= 2;
|
|
}
|
|
|
|
if (subpage) {
|
|
goto invalid_param;
|
|
}
|
|
if (page_len > len) {
|
|
goto invalid_param_len;
|
|
}
|
|
|
|
if (!change) {
|
|
if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) {
|
|
goto invalid_param;
|
|
}
|
|
} else {
|
|
scsi_disk_apply_mode_select(s, page, p);
|
|
}
|
|
|
|
p += page_len;
|
|
len -= page_len;
|
|
}
|
|
return 0;
|
|
|
|
invalid_param:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
|
|
return -1;
|
|
|
|
invalid_param_len:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
|
|
return -1;
|
|
}
|
|
|
|
static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
uint8_t *p = inbuf;
|
|
int cmd = r->req.cmd.buf[0];
|
|
int len = r->req.cmd.xfer;
|
|
int hdr_len = (cmd == MODE_SELECT ? 4 : 8);
|
|
int bd_len;
|
|
int pass;
|
|
|
|
/* We only support PF=1, SP=0. */
|
|
if ((r->req.cmd.buf[1] & 0x11) != 0x10) {
|
|
goto invalid_field;
|
|
}
|
|
|
|
if (len < hdr_len) {
|
|
goto invalid_param_len;
|
|
}
|
|
|
|
bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6]));
|
|
len -= hdr_len;
|
|
p += hdr_len;
|
|
if (len < bd_len) {
|
|
goto invalid_param_len;
|
|
}
|
|
if (bd_len != 0 && bd_len != 8) {
|
|
goto invalid_param;
|
|
}
|
|
|
|
len -= bd_len;
|
|
p += bd_len;
|
|
|
|
/* Ensure no change is made if there is an error! */
|
|
for (pass = 0; pass < 2; pass++) {
|
|
if (mode_select_pages(r, p, len, pass == 1) < 0) {
|
|
assert(pass == 0);
|
|
return;
|
|
}
|
|
}
|
|
if (!blk_enable_write_cache(s->qdev.conf.blk)) {
|
|
/* The request is used as the AIO opaque value, so add a ref. */
|
|
scsi_req_ref(&r->req);
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
|
|
BLOCK_ACCT_FLUSH);
|
|
r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
|
|
return;
|
|
}
|
|
|
|
scsi_req_complete(&r->req, GOOD);
|
|
return;
|
|
|
|
invalid_param:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
|
|
return;
|
|
|
|
invalid_param_len:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
|
|
return;
|
|
|
|
invalid_field:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
}
|
|
|
|
static inline bool check_lba_range(SCSIDiskState *s,
|
|
uint64_t sector_num, uint32_t nb_sectors)
|
|
{
|
|
/*
|
|
* The first line tests that no overflow happens when computing the last
|
|
* sector. The second line tests that the last accessed sector is in
|
|
* range.
|
|
*
|
|
* Careful, the computations should not underflow for nb_sectors == 0,
|
|
* and a 0-block read to the first LBA beyond the end of device is
|
|
* valid.
|
|
*/
|
|
return (sector_num <= sector_num + nb_sectors &&
|
|
sector_num + nb_sectors <= s->qdev.max_lba + 1);
|
|
}
|
|
|
|
typedef struct UnmapCBData {
|
|
SCSIDiskReq *r;
|
|
uint8_t *inbuf;
|
|
int count;
|
|
} UnmapCBData;
|
|
|
|
static void scsi_unmap_complete(void *opaque, int ret);
|
|
|
|
static void scsi_unmap_complete_noio(UnmapCBData *data, int ret)
|
|
{
|
|
SCSIDiskReq *r = data->r;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
uint64_t sector_num;
|
|
uint32_t nb_sectors;
|
|
|
|
assert(r->req.aiocb == NULL);
|
|
if (scsi_disk_req_check_error(r, ret, false)) {
|
|
goto done;
|
|
}
|
|
|
|
if (data->count > 0) {
|
|
sector_num = ldq_be_p(&data->inbuf[0]);
|
|
nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL;
|
|
if (!check_lba_range(s, sector_num, nb_sectors)) {
|
|
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
|
|
goto done;
|
|
}
|
|
|
|
r->req.aiocb = blk_aio_pdiscard(s->qdev.conf.blk,
|
|
sector_num * s->qdev.blocksize,
|
|
nb_sectors * s->qdev.blocksize,
|
|
scsi_unmap_complete, data);
|
|
data->count--;
|
|
data->inbuf += 16;
|
|
return;
|
|
}
|
|
|
|
scsi_req_complete(&r->req, GOOD);
|
|
|
|
done:
|
|
scsi_req_unref(&r->req);
|
|
g_free(data);
|
|
}
|
|
|
|
static void scsi_unmap_complete(void *opaque, int ret)
|
|
{
|
|
UnmapCBData *data = opaque;
|
|
SCSIDiskReq *r = data->r;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert(r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
scsi_unmap_complete_noio(data, ret);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
}
|
|
|
|
static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
uint8_t *p = inbuf;
|
|
int len = r->req.cmd.xfer;
|
|
UnmapCBData *data;
|
|
|
|
/* Reject ANCHOR=1. */
|
|
if (r->req.cmd.buf[1] & 0x1) {
|
|
goto invalid_field;
|
|
}
|
|
|
|
if (len < 8) {
|
|
goto invalid_param_len;
|
|
}
|
|
if (len < lduw_be_p(&p[0]) + 2) {
|
|
goto invalid_param_len;
|
|
}
|
|
if (len < lduw_be_p(&p[2]) + 8) {
|
|
goto invalid_param_len;
|
|
}
|
|
if (lduw_be_p(&p[2]) & 15) {
|
|
goto invalid_param_len;
|
|
}
|
|
|
|
if (blk_is_read_only(s->qdev.conf.blk)) {
|
|
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
|
|
return;
|
|
}
|
|
|
|
data = g_new0(UnmapCBData, 1);
|
|
data->r = r;
|
|
data->inbuf = &p[8];
|
|
data->count = lduw_be_p(&p[2]) >> 4;
|
|
|
|
/* The matching unref is in scsi_unmap_complete, before data is freed. */
|
|
scsi_req_ref(&r->req);
|
|
scsi_unmap_complete_noio(data, 0);
|
|
return;
|
|
|
|
invalid_param_len:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
|
|
return;
|
|
|
|
invalid_field:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
}
|
|
|
|
typedef struct WriteSameCBData {
|
|
SCSIDiskReq *r;
|
|
int64_t sector;
|
|
int nb_sectors;
|
|
QEMUIOVector qiov;
|
|
struct iovec iov;
|
|
} WriteSameCBData;
|
|
|
|
static void scsi_write_same_complete(void *opaque, int ret)
|
|
{
|
|
WriteSameCBData *data = opaque;
|
|
SCSIDiskReq *r = data->r;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
assert(r->req.aiocb != NULL);
|
|
r->req.aiocb = NULL;
|
|
aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
|
|
if (scsi_disk_req_check_error(r, ret, true)) {
|
|
goto done;
|
|
}
|
|
|
|
block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
|
|
|
|
data->nb_sectors -= data->iov.iov_len / 512;
|
|
data->sector += data->iov.iov_len / 512;
|
|
data->iov.iov_len = MIN(data->nb_sectors * 512, data->iov.iov_len);
|
|
if (data->iov.iov_len) {
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
|
|
data->iov.iov_len, BLOCK_ACCT_WRITE);
|
|
/* Reinitialize qiov, to handle unaligned WRITE SAME request
|
|
* where final qiov may need smaller size */
|
|
qemu_iovec_init_external(&data->qiov, &data->iov, 1);
|
|
r->req.aiocb = blk_aio_pwritev(s->qdev.conf.blk,
|
|
data->sector << BDRV_SECTOR_BITS,
|
|
&data->qiov, 0,
|
|
scsi_write_same_complete, data);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
return;
|
|
}
|
|
|
|
scsi_req_complete(&r->req, GOOD);
|
|
|
|
done:
|
|
scsi_req_unref(&r->req);
|
|
qemu_vfree(data->iov.iov_base);
|
|
g_free(data);
|
|
aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
|
|
}
|
|
|
|
static void scsi_disk_emulate_write_same(SCSIDiskReq *r, uint8_t *inbuf)
|
|
{
|
|
SCSIRequest *req = &r->req;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
uint32_t nb_sectors = scsi_data_cdb_xfer(r->req.cmd.buf);
|
|
WriteSameCBData *data;
|
|
uint8_t *buf;
|
|
int i;
|
|
|
|
/* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
|
|
if (nb_sectors == 0 || (req->cmd.buf[1] & 0x16)) {
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
return;
|
|
}
|
|
|
|
if (blk_is_read_only(s->qdev.conf.blk)) {
|
|
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
|
|
return;
|
|
}
|
|
if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) {
|
|
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
|
|
return;
|
|
}
|
|
|
|
if ((req->cmd.buf[1] & 0x1) || buffer_is_zero(inbuf, s->qdev.blocksize)) {
|
|
int flags = (req->cmd.buf[1] & 0x8) ? BDRV_REQ_MAY_UNMAP : 0;
|
|
|
|
/* The request is used as the AIO opaque value, so add a ref. */
|
|
scsi_req_ref(&r->req);
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
|
|
nb_sectors * s->qdev.blocksize,
|
|
BLOCK_ACCT_WRITE);
|
|
r->req.aiocb = blk_aio_pwrite_zeroes(s->qdev.conf.blk,
|
|
r->req.cmd.lba * s->qdev.blocksize,
|
|
nb_sectors * s->qdev.blocksize,
|
|
flags, scsi_aio_complete, r);
|
|
return;
|
|
}
|
|
|
|
data = g_new0(WriteSameCBData, 1);
|
|
data->r = r;
|
|
data->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
|
data->nb_sectors = nb_sectors * (s->qdev.blocksize / 512);
|
|
data->iov.iov_len = MIN(data->nb_sectors * 512, SCSI_WRITE_SAME_MAX);
|
|
data->iov.iov_base = buf = blk_blockalign(s->qdev.conf.blk,
|
|
data->iov.iov_len);
|
|
qemu_iovec_init_external(&data->qiov, &data->iov, 1);
|
|
|
|
for (i = 0; i < data->iov.iov_len; i += s->qdev.blocksize) {
|
|
memcpy(&buf[i], inbuf, s->qdev.blocksize);
|
|
}
|
|
|
|
scsi_req_ref(&r->req);
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
|
|
data->iov.iov_len, BLOCK_ACCT_WRITE);
|
|
r->req.aiocb = blk_aio_pwritev(s->qdev.conf.blk,
|
|
data->sector << BDRV_SECTOR_BITS,
|
|
&data->qiov, 0,
|
|
scsi_write_same_complete, data);
|
|
}
|
|
|
|
static void scsi_disk_emulate_write_data(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
if (r->iov.iov_len) {
|
|
int buflen = r->iov.iov_len;
|
|
trace_scsi_disk_emulate_write_data(buflen);
|
|
r->iov.iov_len = 0;
|
|
scsi_req_data(&r->req, buflen);
|
|
return;
|
|
}
|
|
|
|
switch (req->cmd.buf[0]) {
|
|
case MODE_SELECT:
|
|
case MODE_SELECT_10:
|
|
/* This also clears the sense buffer for REQUEST SENSE. */
|
|
scsi_disk_emulate_mode_select(r, r->iov.iov_base);
|
|
break;
|
|
|
|
case UNMAP:
|
|
scsi_disk_emulate_unmap(r, r->iov.iov_base);
|
|
break;
|
|
|
|
case VERIFY_10:
|
|
case VERIFY_12:
|
|
case VERIFY_16:
|
|
if (r->req.status == -1) {
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
}
|
|
break;
|
|
|
|
case WRITE_SAME_10:
|
|
case WRITE_SAME_16:
|
|
scsi_disk_emulate_write_same(r, r->iov.iov_base);
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
uint64_t nb_sectors;
|
|
uint8_t *outbuf;
|
|
int buflen;
|
|
|
|
switch (req->cmd.buf[0]) {
|
|
case INQUIRY:
|
|
case MODE_SENSE:
|
|
case MODE_SENSE_10:
|
|
case RESERVE:
|
|
case RESERVE_10:
|
|
case RELEASE:
|
|
case RELEASE_10:
|
|
case START_STOP:
|
|
case ALLOW_MEDIUM_REMOVAL:
|
|
case GET_CONFIGURATION:
|
|
case GET_EVENT_STATUS_NOTIFICATION:
|
|
case MECHANISM_STATUS:
|
|
case REQUEST_SENSE:
|
|
break;
|
|
|
|
default:
|
|
if (!blk_is_available(s->qdev.conf.blk)) {
|
|
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
|
|
return 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
|
* requires the buffer to be as big as req->cmd.xfer in several
|
|
* places. So, do not allow CDBs with a very large ALLOCATION
|
|
* LENGTH. The real fix would be to modify scsi_read_data and
|
|
* dma_buf_read, so that they return data beyond the buflen
|
|
* as all zeros.
|
|
*/
|
|
if (req->cmd.xfer > 65536) {
|
|
goto illegal_request;
|
|
}
|
|
r->buflen = MAX(4096, req->cmd.xfer);
|
|
|
|
if (!r->iov.iov_base) {
|
|
r->iov.iov_base = blk_blockalign(s->qdev.conf.blk, r->buflen);
|
|
}
|
|
|
|
buflen = req->cmd.xfer;
|
|
outbuf = r->iov.iov_base;
|
|
memset(outbuf, 0, r->buflen);
|
|
switch (req->cmd.buf[0]) {
|
|
case TEST_UNIT_READY:
|
|
assert(blk_is_available(s->qdev.conf.blk));
|
|
break;
|
|
case INQUIRY:
|
|
buflen = scsi_disk_emulate_inquiry(req, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case MODE_SENSE:
|
|
case MODE_SENSE_10:
|
|
buflen = scsi_disk_emulate_mode_sense(r, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case READ_TOC:
|
|
buflen = scsi_disk_emulate_read_toc(req, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case RESERVE:
|
|
if (req->cmd.buf[1] & 1) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case RESERVE_10:
|
|
if (req->cmd.buf[1] & 3) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case RELEASE:
|
|
if (req->cmd.buf[1] & 1) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case RELEASE_10:
|
|
if (req->cmd.buf[1] & 3) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case START_STOP:
|
|
if (scsi_disk_emulate_start_stop(r) < 0) {
|
|
return 0;
|
|
}
|
|
break;
|
|
case ALLOW_MEDIUM_REMOVAL:
|
|
s->tray_locked = req->cmd.buf[4] & 1;
|
|
blk_lock_medium(s->qdev.conf.blk, req->cmd.buf[4] & 1);
|
|
break;
|
|
case READ_CAPACITY_10:
|
|
/* The normal LEN field for this command is zero. */
|
|
memset(outbuf, 0, 8);
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
if (!nb_sectors) {
|
|
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
|
|
return 0;
|
|
}
|
|
if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) {
|
|
goto illegal_request;
|
|
}
|
|
nb_sectors /= s->qdev.blocksize / 512;
|
|
/* Returned value is the address of the last sector. */
|
|
nb_sectors--;
|
|
/* Remember the new size for read/write sanity checking. */
|
|
s->qdev.max_lba = nb_sectors;
|
|
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
|
if (nb_sectors > UINT32_MAX) {
|
|
nb_sectors = UINT32_MAX;
|
|
}
|
|
outbuf[0] = (nb_sectors >> 24) & 0xff;
|
|
outbuf[1] = (nb_sectors >> 16) & 0xff;
|
|
outbuf[2] = (nb_sectors >> 8) & 0xff;
|
|
outbuf[3] = nb_sectors & 0xff;
|
|
outbuf[4] = 0;
|
|
outbuf[5] = 0;
|
|
outbuf[6] = s->qdev.blocksize >> 8;
|
|
outbuf[7] = 0;
|
|
break;
|
|
case REQUEST_SENSE:
|
|
/* Just return "NO SENSE". */
|
|
buflen = scsi_convert_sense(NULL, 0, outbuf, r->buflen,
|
|
(req->cmd.buf[1] & 1) == 0);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case MECHANISM_STATUS:
|
|
buflen = scsi_emulate_mechanism_status(s, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case GET_CONFIGURATION:
|
|
buflen = scsi_get_configuration(s, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case GET_EVENT_STATUS_NOTIFICATION:
|
|
buflen = scsi_get_event_status_notification(s, r, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case READ_DISC_INFORMATION:
|
|
buflen = scsi_read_disc_information(s, r, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case READ_DVD_STRUCTURE:
|
|
buflen = scsi_read_dvd_structure(s, r, outbuf);
|
|
if (buflen < 0) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case SERVICE_ACTION_IN_16:
|
|
/* Service Action In subcommands. */
|
|
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) {
|
|
trace_scsi_disk_emulate_command_SAI_16();
|
|
memset(outbuf, 0, req->cmd.xfer);
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
if (!nb_sectors) {
|
|
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
|
|
return 0;
|
|
}
|
|
if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) {
|
|
goto illegal_request;
|
|
}
|
|
nb_sectors /= s->qdev.blocksize / 512;
|
|
/* Returned value is the address of the last sector. */
|
|
nb_sectors--;
|
|
/* Remember the new size for read/write sanity checking. */
|
|
s->qdev.max_lba = nb_sectors;
|
|
outbuf[0] = (nb_sectors >> 56) & 0xff;
|
|
outbuf[1] = (nb_sectors >> 48) & 0xff;
|
|
outbuf[2] = (nb_sectors >> 40) & 0xff;
|
|
outbuf[3] = (nb_sectors >> 32) & 0xff;
|
|
outbuf[4] = (nb_sectors >> 24) & 0xff;
|
|
outbuf[5] = (nb_sectors >> 16) & 0xff;
|
|
outbuf[6] = (nb_sectors >> 8) & 0xff;
|
|
outbuf[7] = nb_sectors & 0xff;
|
|
outbuf[8] = 0;
|
|
outbuf[9] = 0;
|
|
outbuf[10] = s->qdev.blocksize >> 8;
|
|
outbuf[11] = 0;
|
|
outbuf[12] = 0;
|
|
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
|
|
|
/* set TPE bit if the format supports discard */
|
|
if (s->qdev.conf.discard_granularity) {
|
|
outbuf[14] = 0x80;
|
|
}
|
|
|
|
/* Protection, exponent and lowest lba field left blank. */
|
|
break;
|
|
}
|
|
trace_scsi_disk_emulate_command_SAI_unsupported();
|
|
goto illegal_request;
|
|
case SYNCHRONIZE_CACHE:
|
|
/* The request is used as the AIO opaque value, so add a ref. */
|
|
scsi_req_ref(&r->req);
|
|
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
|
|
BLOCK_ACCT_FLUSH);
|
|
r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
|
|
return 0;
|
|
case SEEK_10:
|
|
trace_scsi_disk_emulate_command_SEEK_10(r->req.cmd.lba);
|
|
if (r->req.cmd.lba > s->qdev.max_lba) {
|
|
goto illegal_lba;
|
|
}
|
|
break;
|
|
case MODE_SELECT:
|
|
trace_scsi_disk_emulate_command_MODE_SELECT(r->req.cmd.xfer);
|
|
break;
|
|
case MODE_SELECT_10:
|
|
trace_scsi_disk_emulate_command_MODE_SELECT_10(r->req.cmd.xfer);
|
|
break;
|
|
case UNMAP:
|
|
trace_scsi_disk_emulate_command_UNMAP(r->req.cmd.xfer);
|
|
break;
|
|
case VERIFY_10:
|
|
case VERIFY_12:
|
|
case VERIFY_16:
|
|
trace_scsi_disk_emulate_command_VERIFY((req->cmd.buf[1] >> 1) & 3);
|
|
if (req->cmd.buf[1] & 6) {
|
|
goto illegal_request;
|
|
}
|
|
break;
|
|
case WRITE_SAME_10:
|
|
case WRITE_SAME_16:
|
|
trace_scsi_disk_emulate_command_WRITE_SAME(
|
|
req->cmd.buf[0] == WRITE_SAME_10 ? 10 : 16, r->req.cmd.xfer);
|
|
break;
|
|
default:
|
|
trace_scsi_disk_emulate_command_UNKNOWN(buf[0],
|
|
scsi_command_name(buf[0]));
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
|
|
return 0;
|
|
}
|
|
assert(!r->req.aiocb);
|
|
r->iov.iov_len = MIN(r->buflen, req->cmd.xfer);
|
|
if (r->iov.iov_len == 0) {
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
assert(r->iov.iov_len == req->cmd.xfer);
|
|
return -r->iov.iov_len;
|
|
} else {
|
|
return r->iov.iov_len;
|
|
}
|
|
|
|
illegal_request:
|
|
if (r->req.status == -1) {
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
}
|
|
return 0;
|
|
|
|
illegal_lba:
|
|
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
|
|
return 0;
|
|
}
|
|
|
|
/* Execute a scsi command. Returns the length of the data expected by the
|
|
command. This will be Positive for data transfers from the device
|
|
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
|
and zero if the command does not transfer any data. */
|
|
|
|
static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
|
|
uint32_t len;
|
|
uint8_t command;
|
|
|
|
command = buf[0];
|
|
|
|
if (!blk_is_available(s->qdev.conf.blk)) {
|
|
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
|
|
return 0;
|
|
}
|
|
|
|
len = scsi_data_cdb_xfer(r->req.cmd.buf);
|
|
switch (command) {
|
|
case READ_6:
|
|
case READ_10:
|
|
case READ_12:
|
|
case READ_16:
|
|
trace_scsi_disk_dma_command_READ(r->req.cmd.lba, len);
|
|
/* Protection information is not supported. For SCSI versions 2 and
|
|
* older (as determined by snooping the guest's INQUIRY commands),
|
|
* there is no RD/WR/VRPROTECT, so skip this check in these versions.
|
|
*/
|
|
if (s->qdev.scsi_version > 2 && (r->req.cmd.buf[1] & 0xe0)) {
|
|
goto illegal_request;
|
|
}
|
|
if (!check_lba_range(s, r->req.cmd.lba, len)) {
|
|
goto illegal_lba;
|
|
}
|
|
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
|
r->sector_count = len * (s->qdev.blocksize / 512);
|
|
break;
|
|
case WRITE_6:
|
|
case WRITE_10:
|
|
case WRITE_12:
|
|
case WRITE_16:
|
|
case WRITE_VERIFY_10:
|
|
case WRITE_VERIFY_12:
|
|
case WRITE_VERIFY_16:
|
|
if (blk_is_read_only(s->qdev.conf.blk)) {
|
|
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
|
|
return 0;
|
|
}
|
|
trace_scsi_disk_dma_command_WRITE(
|
|
(command & 0xe) == 0xe ? "And Verify " : "",
|
|
r->req.cmd.lba, len);
|
|
/* fall through */
|
|
case VERIFY_10:
|
|
case VERIFY_12:
|
|
case VERIFY_16:
|
|
/* We get here only for BYTCHK == 0x01 and only for scsi-block.
|
|
* As far as DMA is concerned, we can treat it the same as a write;
|
|
* scsi_block_do_sgio will send VERIFY commands.
|
|
*/
|
|
if (s->qdev.scsi_version > 2 && (r->req.cmd.buf[1] & 0xe0)) {
|
|
goto illegal_request;
|
|
}
|
|
if (!check_lba_range(s, r->req.cmd.lba, len)) {
|
|
goto illegal_lba;
|
|
}
|
|
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
|
r->sector_count = len * (s->qdev.blocksize / 512);
|
|
break;
|
|
default:
|
|
abort();
|
|
illegal_request:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
return 0;
|
|
illegal_lba:
|
|
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
|
|
return 0;
|
|
}
|
|
r->need_fua_emulation = sdc->need_fua_emulation(&r->req.cmd);
|
|
if (r->sector_count == 0) {
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
assert(r->iov.iov_len == 0);
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
return -r->sector_count * 512;
|
|
} else {
|
|
return r->sector_count * 512;
|
|
}
|
|
}
|
|
|
|
static void scsi_disk_reset(DeviceState *dev)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev);
|
|
uint64_t nb_sectors;
|
|
|
|
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET));
|
|
|
|
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
|
|
nb_sectors /= s->qdev.blocksize / 512;
|
|
if (nb_sectors) {
|
|
nb_sectors--;
|
|
}
|
|
s->qdev.max_lba = nb_sectors;
|
|
/* reset tray statuses */
|
|
s->tray_locked = 0;
|
|
s->tray_open = 0;
|
|
|
|
s->qdev.scsi_version = s->qdev.default_scsi_version;
|
|
}
|
|
|
|
static void scsi_disk_resize_cb(void *opaque)
|
|
{
|
|
SCSIDiskState *s = opaque;
|
|
|
|
/* SPC lists this sense code as available only for
|
|
* direct-access devices.
|
|
*/
|
|
if (s->qdev.type == TYPE_DISK) {
|
|
scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED));
|
|
}
|
|
}
|
|
|
|
static void scsi_cd_change_media_cb(void *opaque, bool load, Error **errp)
|
|
{
|
|
SCSIDiskState *s = opaque;
|
|
|
|
/*
|
|
* When a CD gets changed, we have to report an ejected state and
|
|
* then a loaded state to guests so that they detect tray
|
|
* open/close and media change events. Guests that do not use
|
|
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
|
* states rely on this behavior.
|
|
*
|
|
* media_changed governs the state machine used for unit attention
|
|
* report. media_event is used by GET EVENT STATUS NOTIFICATION.
|
|
*/
|
|
s->media_changed = load;
|
|
s->tray_open = !load;
|
|
scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM));
|
|
s->media_event = true;
|
|
s->eject_request = false;
|
|
}
|
|
|
|
static void scsi_cd_eject_request_cb(void *opaque, bool force)
|
|
{
|
|
SCSIDiskState *s = opaque;
|
|
|
|
s->eject_request = true;
|
|
if (force) {
|
|
s->tray_locked = false;
|
|
}
|
|
}
|
|
|
|
static bool scsi_cd_is_tray_open(void *opaque)
|
|
{
|
|
return ((SCSIDiskState *)opaque)->tray_open;
|
|
}
|
|
|
|
static bool scsi_cd_is_medium_locked(void *opaque)
|
|
{
|
|
return ((SCSIDiskState *)opaque)->tray_locked;
|
|
}
|
|
|
|
static const BlockDevOps scsi_disk_removable_block_ops = {
|
|
.change_media_cb = scsi_cd_change_media_cb,
|
|
.eject_request_cb = scsi_cd_eject_request_cb,
|
|
.is_tray_open = scsi_cd_is_tray_open,
|
|
.is_medium_locked = scsi_cd_is_medium_locked,
|
|
|
|
.resize_cb = scsi_disk_resize_cb,
|
|
};
|
|
|
|
static const BlockDevOps scsi_disk_block_ops = {
|
|
.resize_cb = scsi_disk_resize_cb,
|
|
};
|
|
|
|
static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
if (s->media_changed) {
|
|
s->media_changed = false;
|
|
scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED));
|
|
}
|
|
}
|
|
|
|
static void scsi_realize(SCSIDevice *dev, Error **errp)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
|
|
if (!s->qdev.conf.blk) {
|
|
error_setg(errp, "drive property not set");
|
|
return;
|
|
}
|
|
|
|
if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
|
|
!blk_is_inserted(s->qdev.conf.blk)) {
|
|
error_setg(errp, "Device needs media, but drive is empty");
|
|
return;
|
|
}
|
|
|
|
blkconf_blocksizes(&s->qdev.conf);
|
|
|
|
if (s->qdev.conf.logical_block_size >
|
|
s->qdev.conf.physical_block_size) {
|
|
error_setg(errp,
|
|
"logical_block_size > physical_block_size not supported");
|
|
return;
|
|
}
|
|
|
|
if (dev->type == TYPE_DISK) {
|
|
if (!blkconf_geometry(&dev->conf, NULL, 65535, 255, 255, errp)) {
|
|
return;
|
|
}
|
|
}
|
|
if (!blkconf_apply_backend_options(&dev->conf,
|
|
blk_is_read_only(s->qdev.conf.blk),
|
|
dev->type == TYPE_DISK, errp)) {
|
|
return;
|
|
}
|
|
|
|
if (s->qdev.conf.discard_granularity == -1) {
|
|
s->qdev.conf.discard_granularity =
|
|
MAX(s->qdev.conf.logical_block_size, DEFAULT_DISCARD_GRANULARITY);
|
|
}
|
|
|
|
if (!s->version) {
|
|
s->version = g_strdup(qemu_hw_version());
|
|
}
|
|
if (!s->vendor) {
|
|
s->vendor = g_strdup("QEMU");
|
|
}
|
|
if (!s->device_id) {
|
|
if (s->serial) {
|
|
s->device_id = g_strdup_printf("%.20s", s->serial);
|
|
} else {
|
|
const char *str = blk_name(s->qdev.conf.blk);
|
|
if (str && *str) {
|
|
s->device_id = g_strdup(str);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (blk_is_sg(s->qdev.conf.blk)) {
|
|
error_setg(errp, "unwanted /dev/sg*");
|
|
return;
|
|
}
|
|
|
|
if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
|
|
!(s->features & (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS))) {
|
|
blk_set_dev_ops(s->qdev.conf.blk, &scsi_disk_removable_block_ops, s);
|
|
} else {
|
|
blk_set_dev_ops(s->qdev.conf.blk, &scsi_disk_block_ops, s);
|
|
}
|
|
blk_set_guest_block_size(s->qdev.conf.blk, s->qdev.blocksize);
|
|
|
|
blk_iostatus_enable(s->qdev.conf.blk);
|
|
}
|
|
|
|
static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
AioContext *ctx = NULL;
|
|
/* can happen for devices without drive. The error message for missing
|
|
* backend will be issued in scsi_realize
|
|
*/
|
|
if (s->qdev.conf.blk) {
|
|
ctx = blk_get_aio_context(s->qdev.conf.blk);
|
|
aio_context_acquire(ctx);
|
|
blkconf_blocksizes(&s->qdev.conf);
|
|
}
|
|
s->qdev.blocksize = s->qdev.conf.logical_block_size;
|
|
s->qdev.type = TYPE_DISK;
|
|
if (!s->product) {
|
|
s->product = g_strdup("QEMU HARDDISK");
|
|
}
|
|
scsi_realize(&s->qdev, errp);
|
|
if (ctx) {
|
|
aio_context_release(ctx);
|
|
}
|
|
}
|
|
|
|
static void scsi_cd_realize(SCSIDevice *dev, Error **errp)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
AioContext *ctx;
|
|
int ret;
|
|
|
|
if (!dev->conf.blk) {
|
|
/* Anonymous BlockBackend for an empty drive. As we put it into
|
|
* dev->conf, qdev takes care of detaching on unplug. */
|
|
dev->conf.blk = blk_new(0, BLK_PERM_ALL);
|
|
ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
|
|
assert(ret == 0);
|
|
}
|
|
|
|
ctx = blk_get_aio_context(dev->conf.blk);
|
|
aio_context_acquire(ctx);
|
|
s->qdev.blocksize = 2048;
|
|
s->qdev.type = TYPE_ROM;
|
|
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
|
if (!s->product) {
|
|
s->product = g_strdup("QEMU CD-ROM");
|
|
}
|
|
scsi_realize(&s->qdev, errp);
|
|
aio_context_release(ctx);
|
|
}
|
|
|
|
static void scsi_disk_realize(SCSIDevice *dev, Error **errp)
|
|
{
|
|
DriveInfo *dinfo;
|
|
Error *local_err = NULL;
|
|
|
|
if (!dev->conf.blk) {
|
|
scsi_realize(dev, &local_err);
|
|
assert(local_err);
|
|
error_propagate(errp, local_err);
|
|
return;
|
|
}
|
|
|
|
dinfo = blk_legacy_dinfo(dev->conf.blk);
|
|
if (dinfo && dinfo->media_cd) {
|
|
scsi_cd_realize(dev, errp);
|
|
} else {
|
|
scsi_hd_realize(dev, errp);
|
|
}
|
|
}
|
|
|
|
static const SCSIReqOps scsi_disk_emulate_reqops = {
|
|
.size = sizeof(SCSIDiskReq),
|
|
.free_req = scsi_free_request,
|
|
.send_command = scsi_disk_emulate_command,
|
|
.read_data = scsi_disk_emulate_read_data,
|
|
.write_data = scsi_disk_emulate_write_data,
|
|
.get_buf = scsi_get_buf,
|
|
};
|
|
|
|
static const SCSIReqOps scsi_disk_dma_reqops = {
|
|
.size = sizeof(SCSIDiskReq),
|
|
.free_req = scsi_free_request,
|
|
.send_command = scsi_disk_dma_command,
|
|
.read_data = scsi_read_data,
|
|
.write_data = scsi_write_data,
|
|
.get_buf = scsi_get_buf,
|
|
.load_request = scsi_disk_load_request,
|
|
.save_request = scsi_disk_save_request,
|
|
};
|
|
|
|
static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = {
|
|
[TEST_UNIT_READY] = &scsi_disk_emulate_reqops,
|
|
[INQUIRY] = &scsi_disk_emulate_reqops,
|
|
[MODE_SENSE] = &scsi_disk_emulate_reqops,
|
|
[MODE_SENSE_10] = &scsi_disk_emulate_reqops,
|
|
[START_STOP] = &scsi_disk_emulate_reqops,
|
|
[ALLOW_MEDIUM_REMOVAL] = &scsi_disk_emulate_reqops,
|
|
[READ_CAPACITY_10] = &scsi_disk_emulate_reqops,
|
|
[READ_TOC] = &scsi_disk_emulate_reqops,
|
|
[READ_DVD_STRUCTURE] = &scsi_disk_emulate_reqops,
|
|
[READ_DISC_INFORMATION] = &scsi_disk_emulate_reqops,
|
|
[GET_CONFIGURATION] = &scsi_disk_emulate_reqops,
|
|
[GET_EVENT_STATUS_NOTIFICATION] = &scsi_disk_emulate_reqops,
|
|
[MECHANISM_STATUS] = &scsi_disk_emulate_reqops,
|
|
[SERVICE_ACTION_IN_16] = &scsi_disk_emulate_reqops,
|
|
[REQUEST_SENSE] = &scsi_disk_emulate_reqops,
|
|
[SYNCHRONIZE_CACHE] = &scsi_disk_emulate_reqops,
|
|
[SEEK_10] = &scsi_disk_emulate_reqops,
|
|
[MODE_SELECT] = &scsi_disk_emulate_reqops,
|
|
[MODE_SELECT_10] = &scsi_disk_emulate_reqops,
|
|
[UNMAP] = &scsi_disk_emulate_reqops,
|
|
[WRITE_SAME_10] = &scsi_disk_emulate_reqops,
|
|
[WRITE_SAME_16] = &scsi_disk_emulate_reqops,
|
|
[VERIFY_10] = &scsi_disk_emulate_reqops,
|
|
[VERIFY_12] = &scsi_disk_emulate_reqops,
|
|
[VERIFY_16] = &scsi_disk_emulate_reqops,
|
|
|
|
[READ_6] = &scsi_disk_dma_reqops,
|
|
[READ_10] = &scsi_disk_dma_reqops,
|
|
[READ_12] = &scsi_disk_dma_reqops,
|
|
[READ_16] = &scsi_disk_dma_reqops,
|
|
[WRITE_6] = &scsi_disk_dma_reqops,
|
|
[WRITE_10] = &scsi_disk_dma_reqops,
|
|
[WRITE_12] = &scsi_disk_dma_reqops,
|
|
[WRITE_16] = &scsi_disk_dma_reqops,
|
|
[WRITE_VERIFY_10] = &scsi_disk_dma_reqops,
|
|
[WRITE_VERIFY_12] = &scsi_disk_dma_reqops,
|
|
[WRITE_VERIFY_16] = &scsi_disk_dma_reqops,
|
|
};
|
|
|
|
static void scsi_disk_new_request_dump(uint32_t lun, uint32_t tag, uint8_t *buf)
|
|
{
|
|
int i;
|
|
int len = scsi_cdb_length(buf);
|
|
char *line_buffer, *p;
|
|
|
|
line_buffer = g_malloc(len * 5 + 1);
|
|
|
|
for (i = 0, p = line_buffer; i < len; i++) {
|
|
p += sprintf(p, " 0x%02x", buf[i]);
|
|
}
|
|
trace_scsi_disk_new_request(lun, tag, line_buffer);
|
|
|
|
g_free(line_buffer);
|
|
}
|
|
|
|
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
|
|
uint8_t *buf, void *hba_private)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
|
|
SCSIRequest *req;
|
|
const SCSIReqOps *ops;
|
|
uint8_t command;
|
|
|
|
command = buf[0];
|
|
ops = scsi_disk_reqops_dispatch[command];
|
|
if (!ops) {
|
|
ops = &scsi_disk_emulate_reqops;
|
|
}
|
|
req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private);
|
|
|
|
if (trace_event_get_state_backends(TRACE_SCSI_DISK_NEW_REQUEST)) {
|
|
scsi_disk_new_request_dump(lun, tag, buf);
|
|
}
|
|
|
|
return req;
|
|
}
|
|
|
|
#ifdef __linux__
|
|
static int get_device_type(SCSIDiskState *s)
|
|
{
|
|
uint8_t cmd[16];
|
|
uint8_t buf[36];
|
|
int ret;
|
|
|
|
memset(cmd, 0, sizeof(cmd));
|
|
memset(buf, 0, sizeof(buf));
|
|
cmd[0] = INQUIRY;
|
|
cmd[4] = sizeof(buf);
|
|
|
|
ret = scsi_SG_IO_FROM_DEV(s->qdev.conf.blk, cmd, sizeof(cmd),
|
|
buf, sizeof(buf));
|
|
if (ret < 0) {
|
|
return -1;
|
|
}
|
|
s->qdev.type = buf[0];
|
|
if (buf[1] & 0x80) {
|
|
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void scsi_block_realize(SCSIDevice *dev, Error **errp)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
AioContext *ctx;
|
|
int sg_version;
|
|
int rc;
|
|
|
|
if (!s->qdev.conf.blk) {
|
|
error_setg(errp, "drive property not set");
|
|
return;
|
|
}
|
|
|
|
if (s->rotation_rate) {
|
|
error_report_once("rotation_rate is specified for scsi-block but is "
|
|
"not implemented. This option is deprecated and will "
|
|
"be removed in a future version");
|
|
}
|
|
|
|
ctx = blk_get_aio_context(s->qdev.conf.blk);
|
|
aio_context_acquire(ctx);
|
|
|
|
/* check we are using a driver managing SG_IO (version 3 and after) */
|
|
rc = blk_ioctl(s->qdev.conf.blk, SG_GET_VERSION_NUM, &sg_version);
|
|
if (rc < 0) {
|
|
error_setg_errno(errp, -rc, "cannot get SG_IO version number");
|
|
if (rc != -EPERM) {
|
|
error_append_hint(errp, "Is this a SCSI device?\n");
|
|
}
|
|
goto out;
|
|
}
|
|
if (sg_version < 30000) {
|
|
error_setg(errp, "scsi generic interface too old");
|
|
goto out;
|
|
}
|
|
|
|
/* get device type from INQUIRY data */
|
|
rc = get_device_type(s);
|
|
if (rc < 0) {
|
|
error_setg(errp, "INQUIRY failed");
|
|
goto out;
|
|
}
|
|
|
|
/* Make a guess for the block size, we'll fix it when the guest sends.
|
|
* READ CAPACITY. If they don't, they likely would assume these sizes
|
|
* anyway. (TODO: check in /sys).
|
|
*/
|
|
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
|
|
s->qdev.blocksize = 2048;
|
|
} else {
|
|
s->qdev.blocksize = 512;
|
|
}
|
|
|
|
/* Makes the scsi-block device not removable by using HMP and QMP eject
|
|
* command.
|
|
*/
|
|
s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS);
|
|
|
|
scsi_realize(&s->qdev, errp);
|
|
scsi_generic_read_device_inquiry(&s->qdev);
|
|
|
|
out:
|
|
aio_context_release(ctx);
|
|
}
|
|
|
|
typedef struct SCSIBlockReq {
|
|
SCSIDiskReq req;
|
|
sg_io_hdr_t io_header;
|
|
|
|
/* Selected bytes of the original CDB, copied into our own CDB. */
|
|
uint8_t cmd, cdb1, group_number;
|
|
|
|
/* CDB passed to SG_IO. */
|
|
uint8_t cdb[16];
|
|
} SCSIBlockReq;
|
|
|
|
static BlockAIOCB *scsi_block_do_sgio(SCSIBlockReq *req,
|
|
int64_t offset, QEMUIOVector *iov,
|
|
int direction,
|
|
BlockCompletionFunc *cb, void *opaque)
|
|
{
|
|
sg_io_hdr_t *io_header = &req->io_header;
|
|
SCSIDiskReq *r = &req->req;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
int nb_logical_blocks;
|
|
uint64_t lba;
|
|
BlockAIOCB *aiocb;
|
|
|
|
/* This is not supported yet. It can only happen if the guest does
|
|
* reads and writes that are not aligned to one logical sectors
|
|
* _and_ cover multiple MemoryRegions.
|
|
*/
|
|
assert(offset % s->qdev.blocksize == 0);
|
|
assert(iov->size % s->qdev.blocksize == 0);
|
|
|
|
io_header->interface_id = 'S';
|
|
|
|
/* The data transfer comes from the QEMUIOVector. */
|
|
io_header->dxfer_direction = direction;
|
|
io_header->dxfer_len = iov->size;
|
|
io_header->dxferp = (void *)iov->iov;
|
|
io_header->iovec_count = iov->niov;
|
|
assert(io_header->iovec_count == iov->niov); /* no overflow! */
|
|
|
|
/* Build a new CDB with the LBA and length patched in, in case
|
|
* DMA helpers split the transfer in multiple segments. Do not
|
|
* build a CDB smaller than what the guest wanted, and only build
|
|
* a larger one if strictly necessary.
|
|
*/
|
|
io_header->cmdp = req->cdb;
|
|
lba = offset / s->qdev.blocksize;
|
|
nb_logical_blocks = io_header->dxfer_len / s->qdev.blocksize;
|
|
|
|
if ((req->cmd >> 5) == 0 && lba <= 0x1ffff) {
|
|
/* 6-byte CDB */
|
|
stl_be_p(&req->cdb[0], lba | (req->cmd << 24));
|
|
req->cdb[4] = nb_logical_blocks;
|
|
req->cdb[5] = 0;
|
|
io_header->cmd_len = 6;
|
|
} else if ((req->cmd >> 5) <= 1 && lba <= 0xffffffffULL) {
|
|
/* 10-byte CDB */
|
|
req->cdb[0] = (req->cmd & 0x1f) | 0x20;
|
|
req->cdb[1] = req->cdb1;
|
|
stl_be_p(&req->cdb[2], lba);
|
|
req->cdb[6] = req->group_number;
|
|
stw_be_p(&req->cdb[7], nb_logical_blocks);
|
|
req->cdb[9] = 0;
|
|
io_header->cmd_len = 10;
|
|
} else if ((req->cmd >> 5) != 4 && lba <= 0xffffffffULL) {
|
|
/* 12-byte CDB */
|
|
req->cdb[0] = (req->cmd & 0x1f) | 0xA0;
|
|
req->cdb[1] = req->cdb1;
|
|
stl_be_p(&req->cdb[2], lba);
|
|
stl_be_p(&req->cdb[6], nb_logical_blocks);
|
|
req->cdb[10] = req->group_number;
|
|
req->cdb[11] = 0;
|
|
io_header->cmd_len = 12;
|
|
} else {
|
|
/* 16-byte CDB */
|
|
req->cdb[0] = (req->cmd & 0x1f) | 0x80;
|
|
req->cdb[1] = req->cdb1;
|
|
stq_be_p(&req->cdb[2], lba);
|
|
stl_be_p(&req->cdb[10], nb_logical_blocks);
|
|
req->cdb[14] = req->group_number;
|
|
req->cdb[15] = 0;
|
|
io_header->cmd_len = 16;
|
|
}
|
|
|
|
/* The rest is as in scsi-generic.c. */
|
|
io_header->mx_sb_len = sizeof(r->req.sense);
|
|
io_header->sbp = r->req.sense;
|
|
io_header->timeout = UINT_MAX;
|
|
io_header->usr_ptr = r;
|
|
io_header->flags |= SG_FLAG_DIRECT_IO;
|
|
|
|
aiocb = blk_aio_ioctl(s->qdev.conf.blk, SG_IO, io_header, cb, opaque);
|
|
assert(aiocb != NULL);
|
|
return aiocb;
|
|
}
|
|
|
|
static bool scsi_block_no_fua(SCSICommand *cmd)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static BlockAIOCB *scsi_block_dma_readv(int64_t offset,
|
|
QEMUIOVector *iov,
|
|
BlockCompletionFunc *cb, void *cb_opaque,
|
|
void *opaque)
|
|
{
|
|
SCSIBlockReq *r = opaque;
|
|
return scsi_block_do_sgio(r, offset, iov,
|
|
SG_DXFER_FROM_DEV, cb, cb_opaque);
|
|
}
|
|
|
|
static BlockAIOCB *scsi_block_dma_writev(int64_t offset,
|
|
QEMUIOVector *iov,
|
|
BlockCompletionFunc *cb, void *cb_opaque,
|
|
void *opaque)
|
|
{
|
|
SCSIBlockReq *r = opaque;
|
|
return scsi_block_do_sgio(r, offset, iov,
|
|
SG_DXFER_TO_DEV, cb, cb_opaque);
|
|
}
|
|
|
|
static bool scsi_block_is_passthrough(SCSIDiskState *s, uint8_t *buf)
|
|
{
|
|
switch (buf[0]) {
|
|
case VERIFY_10:
|
|
case VERIFY_12:
|
|
case VERIFY_16:
|
|
/* Check if BYTCHK == 0x01 (data-out buffer contains data
|
|
* for the number of logical blocks specified in the length
|
|
* field). For other modes, do not use scatter/gather operation.
|
|
*/
|
|
if ((buf[1] & 6) == 2) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case READ_6:
|
|
case READ_10:
|
|
case READ_12:
|
|
case READ_16:
|
|
case WRITE_6:
|
|
case WRITE_10:
|
|
case WRITE_12:
|
|
case WRITE_16:
|
|
case WRITE_VERIFY_10:
|
|
case WRITE_VERIFY_12:
|
|
case WRITE_VERIFY_16:
|
|
/* MMC writing cannot be done via DMA helpers, because it sometimes
|
|
* involves writing beyond the maximum LBA or to negative LBA (lead-in).
|
|
* We might use scsi_block_dma_reqops as long as no writing commands are
|
|
* seen, but performance usually isn't paramount on optical media. So,
|
|
* just make scsi-block operate the same as scsi-generic for them.
|
|
*/
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
static int32_t scsi_block_dma_command(SCSIRequest *req, uint8_t *buf)
|
|
{
|
|
SCSIBlockReq *r = (SCSIBlockReq *)req;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
|
|
r->cmd = req->cmd.buf[0];
|
|
switch (r->cmd >> 5) {
|
|
case 0:
|
|
/* 6-byte CDB. */
|
|
r->cdb1 = r->group_number = 0;
|
|
break;
|
|
case 1:
|
|
/* 10-byte CDB. */
|
|
r->cdb1 = req->cmd.buf[1];
|
|
r->group_number = req->cmd.buf[6];
|
|
break;
|
|
case 4:
|
|
/* 12-byte CDB. */
|
|
r->cdb1 = req->cmd.buf[1];
|
|
r->group_number = req->cmd.buf[10];
|
|
break;
|
|
case 5:
|
|
/* 16-byte CDB. */
|
|
r->cdb1 = req->cmd.buf[1];
|
|
r->group_number = req->cmd.buf[14];
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
/* Protection information is not supported. For SCSI versions 2 and
|
|
* older (as determined by snooping the guest's INQUIRY commands),
|
|
* there is no RD/WR/VRPROTECT, so skip this check in these versions.
|
|
*/
|
|
if (s->qdev.scsi_version > 2 && (req->cmd.buf[1] & 0xe0)) {
|
|
scsi_check_condition(&r->req, SENSE_CODE(INVALID_FIELD));
|
|
return 0;
|
|
}
|
|
|
|
r->req.status = &r->io_header.status;
|
|
return scsi_disk_dma_command(req, buf);
|
|
}
|
|
|
|
static const SCSIReqOps scsi_block_dma_reqops = {
|
|
.size = sizeof(SCSIBlockReq),
|
|
.free_req = scsi_free_request,
|
|
.send_command = scsi_block_dma_command,
|
|
.read_data = scsi_read_data,
|
|
.write_data = scsi_write_data,
|
|
.get_buf = scsi_get_buf,
|
|
.load_request = scsi_disk_load_request,
|
|
.save_request = scsi_disk_save_request,
|
|
};
|
|
|
|
static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
|
|
uint32_t lun, uint8_t *buf,
|
|
void *hba_private)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
|
|
|
|
if (scsi_block_is_passthrough(s, buf)) {
|
|
return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
|
|
hba_private);
|
|
} else {
|
|
return scsi_req_alloc(&scsi_block_dma_reqops, &s->qdev, tag, lun,
|
|
hba_private);
|
|
}
|
|
}
|
|
|
|
static int scsi_block_parse_cdb(SCSIDevice *d, SCSICommand *cmd,
|
|
uint8_t *buf, void *hba_private)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
|
|
|
|
if (scsi_block_is_passthrough(s, buf)) {
|
|
return scsi_bus_parse_cdb(&s->qdev, cmd, buf, hba_private);
|
|
} else {
|
|
return scsi_req_parse_cdb(&s->qdev, cmd, buf);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
static
|
|
BlockAIOCB *scsi_dma_readv(int64_t offset, QEMUIOVector *iov,
|
|
BlockCompletionFunc *cb, void *cb_opaque,
|
|
void *opaque)
|
|
{
|
|
SCSIDiskReq *r = opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
return blk_aio_preadv(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque);
|
|
}
|
|
|
|
static
|
|
BlockAIOCB *scsi_dma_writev(int64_t offset, QEMUIOVector *iov,
|
|
BlockCompletionFunc *cb, void *cb_opaque,
|
|
void *opaque)
|
|
{
|
|
SCSIDiskReq *r = opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque);
|
|
}
|
|
|
|
static void scsi_disk_base_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SCSIDiskClass *sdc = SCSI_DISK_BASE_CLASS(klass);
|
|
|
|
dc->fw_name = "disk";
|
|
dc->reset = scsi_disk_reset;
|
|
sdc->dma_readv = scsi_dma_readv;
|
|
sdc->dma_writev = scsi_dma_writev;
|
|
sdc->need_fua_emulation = scsi_is_cmd_fua;
|
|
}
|
|
|
|
static const TypeInfo scsi_disk_base_info = {
|
|
.name = TYPE_SCSI_DISK_BASE,
|
|
.parent = TYPE_SCSI_DEVICE,
|
|
.class_init = scsi_disk_base_class_initfn,
|
|
.instance_size = sizeof(SCSIDiskState),
|
|
.class_size = sizeof(SCSIDiskClass),
|
|
.abstract = true,
|
|
};
|
|
|
|
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
|
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \
|
|
DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
|
|
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
|
DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
|
|
DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
|
|
DEFINE_PROP_STRING("product", SCSIDiskState, product), \
|
|
DEFINE_PROP_STRING("device_id", SCSIDiskState, device_id)
|
|
|
|
|
|
static Property scsi_hd_properties[] = {
|
|
DEFINE_SCSI_DISK_PROPERTIES(),
|
|
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
|
SCSI_DISK_F_REMOVABLE, false),
|
|
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
|
SCSI_DISK_F_DPOFUA, false),
|
|
DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0),
|
|
DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0),
|
|
DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0),
|
|
DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size,
|
|
DEFAULT_MAX_UNMAP_SIZE),
|
|
DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
|
|
DEFAULT_MAX_IO_SIZE),
|
|
DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState, rotation_rate, 0),
|
|
DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version,
|
|
5),
|
|
DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static const VMStateDescription vmstate_scsi_disk_state = {
|
|
.name = "scsi-disk",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState),
|
|
VMSTATE_BOOL(media_changed, SCSIDiskState),
|
|
VMSTATE_BOOL(media_event, SCSIDiskState),
|
|
VMSTATE_BOOL(eject_request, SCSIDiskState),
|
|
VMSTATE_BOOL(tray_open, SCSIDiskState),
|
|
VMSTATE_BOOL(tray_locked, SCSIDiskState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
|
|
|
|
sc->realize = scsi_hd_realize;
|
|
sc->alloc_req = scsi_new_request;
|
|
sc->unit_attention_reported = scsi_disk_unit_attention_reported;
|
|
dc->desc = "virtual SCSI disk";
|
|
dc->props = scsi_hd_properties;
|
|
dc->vmsd = &vmstate_scsi_disk_state;
|
|
}
|
|
|
|
static const TypeInfo scsi_hd_info = {
|
|
.name = "scsi-hd",
|
|
.parent = TYPE_SCSI_DISK_BASE,
|
|
.class_init = scsi_hd_class_initfn,
|
|
};
|
|
|
|
static Property scsi_cd_properties[] = {
|
|
DEFINE_SCSI_DISK_PROPERTIES(),
|
|
DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0),
|
|
DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0),
|
|
DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0),
|
|
DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
|
|
DEFAULT_MAX_IO_SIZE),
|
|
DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version,
|
|
5),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
|
|
|
|
sc->realize = scsi_cd_realize;
|
|
sc->alloc_req = scsi_new_request;
|
|
sc->unit_attention_reported = scsi_disk_unit_attention_reported;
|
|
dc->desc = "virtual SCSI CD-ROM";
|
|
dc->props = scsi_cd_properties;
|
|
dc->vmsd = &vmstate_scsi_disk_state;
|
|
}
|
|
|
|
static const TypeInfo scsi_cd_info = {
|
|
.name = "scsi-cd",
|
|
.parent = TYPE_SCSI_DISK_BASE,
|
|
.class_init = scsi_cd_class_initfn,
|
|
};
|
|
|
|
#ifdef __linux__
|
|
static Property scsi_block_properties[] = {
|
|
DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
|
|
DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.blk),
|
|
DEFINE_PROP_BOOL("share-rw", SCSIDiskState, qdev.conf.share_rw, false),
|
|
DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState, rotation_rate, 0),
|
|
DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size,
|
|
DEFAULT_MAX_UNMAP_SIZE),
|
|
DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
|
|
DEFAULT_MAX_IO_SIZE),
|
|
DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version,
|
|
-1),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void scsi_block_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
|
|
SCSIDiskClass *sdc = SCSI_DISK_BASE_CLASS(klass);
|
|
|
|
sc->realize = scsi_block_realize;
|
|
sc->alloc_req = scsi_block_new_request;
|
|
sc->parse_cdb = scsi_block_parse_cdb;
|
|
sdc->dma_readv = scsi_block_dma_readv;
|
|
sdc->dma_writev = scsi_block_dma_writev;
|
|
sdc->need_fua_emulation = scsi_block_no_fua;
|
|
dc->desc = "SCSI block device passthrough";
|
|
dc->props = scsi_block_properties;
|
|
dc->vmsd = &vmstate_scsi_disk_state;
|
|
}
|
|
|
|
static const TypeInfo scsi_block_info = {
|
|
.name = "scsi-block",
|
|
.parent = TYPE_SCSI_DISK_BASE,
|
|
.class_init = scsi_block_class_initfn,
|
|
};
|
|
#endif
|
|
|
|
static Property scsi_disk_properties[] = {
|
|
DEFINE_SCSI_DISK_PROPERTIES(),
|
|
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
|
SCSI_DISK_F_REMOVABLE, false),
|
|
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
|
SCSI_DISK_F_DPOFUA, false),
|
|
DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0),
|
|
DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0),
|
|
DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0),
|
|
DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size,
|
|
DEFAULT_MAX_UNMAP_SIZE),
|
|
DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
|
|
DEFAULT_MAX_IO_SIZE),
|
|
DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version,
|
|
5),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
|
|
|
|
sc->realize = scsi_disk_realize;
|
|
sc->alloc_req = scsi_new_request;
|
|
sc->unit_attention_reported = scsi_disk_unit_attention_reported;
|
|
dc->fw_name = "disk";
|
|
dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
|
|
dc->reset = scsi_disk_reset;
|
|
dc->props = scsi_disk_properties;
|
|
dc->vmsd = &vmstate_scsi_disk_state;
|
|
}
|
|
|
|
static const TypeInfo scsi_disk_info = {
|
|
.name = "scsi-disk",
|
|
.parent = TYPE_SCSI_DISK_BASE,
|
|
.class_init = scsi_disk_class_initfn,
|
|
};
|
|
|
|
static void scsi_disk_register_types(void)
|
|
{
|
|
type_register_static(&scsi_disk_base_info);
|
|
type_register_static(&scsi_hd_info);
|
|
type_register_static(&scsi_cd_info);
|
|
#ifdef __linux__
|
|
type_register_static(&scsi_block_info);
|
|
#endif
|
|
type_register_static(&scsi_disk_info);
|
|
}
|
|
|
|
type_init(scsi_disk_register_types)
|