1371 lines
41 KiB
C
1371 lines
41 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.
|
|
*/
|
|
|
|
//#define DEBUG_SCSI
|
|
|
|
#ifdef DEBUG_SCSI
|
|
#define DPRINTF(fmt, ...) \
|
|
do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
|
|
#else
|
|
#define DPRINTF(fmt, ...) do {} while(0)
|
|
#endif
|
|
|
|
#define BADF(fmt, ...) \
|
|
do { fprintf(stderr, "scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
|
|
|
|
#include "qemu-common.h"
|
|
#include "qemu-error.h"
|
|
#include "scsi.h"
|
|
#include "scsi-defs.h"
|
|
#include "sysemu.h"
|
|
#include "blockdev.h"
|
|
#include "block_int.h"
|
|
|
|
#define SCSI_DMA_BUF_SIZE 131072
|
|
#define SCSI_MAX_INQUIRY_LEN 256
|
|
|
|
#define SCSI_REQ_STATUS_RETRY 0x01
|
|
#define SCSI_REQ_STATUS_RETRY_TYPE_MASK 0x06
|
|
#define SCSI_REQ_STATUS_RETRY_READ 0x00
|
|
#define SCSI_REQ_STATUS_RETRY_WRITE 0x02
|
|
#define SCSI_REQ_STATUS_RETRY_FLUSH 0x04
|
|
|
|
typedef struct SCSIDiskState SCSIDiskState;
|
|
|
|
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;
|
|
struct iovec iov;
|
|
QEMUIOVector qiov;
|
|
uint32_t status;
|
|
BlockAcctCookie acct;
|
|
} SCSIDiskReq;
|
|
|
|
struct SCSIDiskState
|
|
{
|
|
SCSIDevice qdev;
|
|
BlockDriverState *bs;
|
|
/* The qemu block layer uses a fixed 512 byte sector size.
|
|
This is the number of 512 byte blocks in a single scsi sector. */
|
|
int cluster_size;
|
|
uint32_t removable;
|
|
uint64_t max_lba;
|
|
QEMUBH *bh;
|
|
char *version;
|
|
char *serial;
|
|
bool tray_open;
|
|
bool tray_locked;
|
|
};
|
|
|
|
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type);
|
|
static int scsi_disk_emulate_command(SCSIDiskReq *r);
|
|
|
|
static void scsi_free_request(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
if (r->iov.iov_base) {
|
|
qemu_vfree(r->iov.iov_base);
|
|
}
|
|
}
|
|
|
|
/* Helper function for command completion with sense. */
|
|
static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
|
|
{
|
|
DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
|
|
r->req.tag, sense.key, sense.asc, sense.ascq);
|
|
scsi_req_build_sense(&r->req, sense);
|
|
scsi_req_complete(&r->req, CHECK_CONDITION);
|
|
}
|
|
|
|
/* Cancel a pending data transfer. */
|
|
static void scsi_cancel_io(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
|
|
DPRINTF("Cancel tag=0x%x\n", req->tag);
|
|
if (r->req.aiocb) {
|
|
bdrv_aio_cancel(r->req.aiocb);
|
|
}
|
|
r->req.aiocb = NULL;
|
|
}
|
|
|
|
static uint32_t scsi_init_iovec(SCSIDiskReq *r)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
if (!r->iov.iov_base) {
|
|
r->buflen = SCSI_DMA_BUF_SIZE;
|
|
r->iov.iov_base = qemu_blockalign(s->bs, r->buflen);
|
|
}
|
|
r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
|
|
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
|
|
return r->qiov.size / 512;
|
|
}
|
|
|
|
static void scsi_read_complete(void * opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
int n;
|
|
|
|
if (r->req.aiocb != NULL) {
|
|
r->req.aiocb = NULL;
|
|
bdrv_acct_done(s->bs, &r->acct);
|
|
}
|
|
|
|
if (ret) {
|
|
if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_READ)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
|
|
|
|
n = r->qiov.size / 512;
|
|
r->sector += n;
|
|
r->sector_count -= n;
|
|
scsi_req_data(&r->req, r->qiov.size);
|
|
}
|
|
|
|
static void scsi_flush_complete(void * opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
|
|
if (r->req.aiocb != NULL) {
|
|
r->req.aiocb = NULL;
|
|
bdrv_acct_done(s->bs, &r->acct);
|
|
}
|
|
|
|
if (ret < 0) {
|
|
if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_FLUSH)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
|
|
/* 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);
|
|
uint32_t n;
|
|
|
|
if (r->sector_count == (uint32_t)-1) {
|
|
DPRINTF("Read buf_len=%zd\n", r->iov.iov_len);
|
|
r->sector_count = 0;
|
|
scsi_req_data(&r->req, r->iov.iov_len);
|
|
return;
|
|
}
|
|
DPRINTF("Read sector_count=%d\n", 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);
|
|
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
DPRINTF("Data transfer direction invalid\n");
|
|
scsi_read_complete(r, -EINVAL);
|
|
return;
|
|
}
|
|
|
|
if (s->tray_open) {
|
|
scsi_read_complete(r, -ENOMEDIUM);
|
|
}
|
|
n = scsi_init_iovec(r);
|
|
bdrv_acct_start(s->bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ);
|
|
r->req.aiocb = bdrv_aio_readv(s->bs, r->sector, &r->qiov, n,
|
|
scsi_read_complete, r);
|
|
if (r->req.aiocb == NULL) {
|
|
scsi_read_complete(r, -EIO);
|
|
}
|
|
}
|
|
|
|
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type)
|
|
{
|
|
int is_read = (type == SCSI_REQ_STATUS_RETRY_READ);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
BlockErrorAction action = bdrv_get_on_error(s->bs, is_read);
|
|
|
|
if (action == BLOCK_ERR_IGNORE) {
|
|
bdrv_mon_event(s->bs, BDRV_ACTION_IGNORE, is_read);
|
|
return 0;
|
|
}
|
|
|
|
if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
|
|
|| action == BLOCK_ERR_STOP_ANY) {
|
|
|
|
type &= SCSI_REQ_STATUS_RETRY_TYPE_MASK;
|
|
r->status |= SCSI_REQ_STATUS_RETRY | type;
|
|
|
|
bdrv_mon_event(s->bs, BDRV_ACTION_STOP, is_read);
|
|
vm_stop(RSTATE_IO_ERROR);
|
|
} else {
|
|
switch (error) {
|
|
case ENOMEM:
|
|
scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
|
|
break;
|
|
case EINVAL:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
break;
|
|
default:
|
|
scsi_check_condition(r, SENSE_CODE(IO_ERROR));
|
|
break;
|
|
}
|
|
bdrv_mon_event(s->bs, BDRV_ACTION_REPORT, is_read);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void scsi_write_complete(void * opaque, int ret)
|
|
{
|
|
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
uint32_t n;
|
|
|
|
if (r->req.aiocb != NULL) {
|
|
r->req.aiocb = NULL;
|
|
bdrv_acct_done(s->bs, &r->acct);
|
|
}
|
|
|
|
if (ret) {
|
|
if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_WRITE)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
n = r->qiov.size / 512;
|
|
r->sector += n;
|
|
r->sector_count -= n;
|
|
if (r->sector_count == 0) {
|
|
scsi_req_complete(&r->req, GOOD);
|
|
} else {
|
|
scsi_init_iovec(r);
|
|
DPRINTF("Write complete tag=0x%x more=%d\n", r->req.tag, r->qiov.size);
|
|
scsi_req_data(&r->req, r->qiov.size);
|
|
}
|
|
}
|
|
|
|
static void scsi_write_data(SCSIRequest *req)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
|
|
uint32_t n;
|
|
|
|
/* No data transfer may already be in progress */
|
|
assert(r->req.aiocb == NULL);
|
|
|
|
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
|
|
DPRINTF("Data transfer direction invalid\n");
|
|
scsi_write_complete(r, -EINVAL);
|
|
return;
|
|
}
|
|
|
|
n = r->qiov.size / 512;
|
|
if (n) {
|
|
if (s->tray_open) {
|
|
scsi_write_complete(r, -ENOMEDIUM);
|
|
}
|
|
bdrv_acct_start(s->bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE);
|
|
r->req.aiocb = bdrv_aio_writev(s->bs, r->sector, &r->qiov, n,
|
|
scsi_write_complete, r);
|
|
if (r->req.aiocb == NULL) {
|
|
scsi_write_complete(r, -ENOMEM);
|
|
}
|
|
} else {
|
|
/* Called for the first time. Ask the driver to send us more data. */
|
|
scsi_write_complete(r, 0);
|
|
}
|
|
}
|
|
|
|
static void scsi_dma_restart_bh(void *opaque)
|
|
{
|
|
SCSIDiskState *s = opaque;
|
|
SCSIRequest *req;
|
|
SCSIDiskReq *r;
|
|
|
|
qemu_bh_delete(s->bh);
|
|
s->bh = NULL;
|
|
|
|
QTAILQ_FOREACH(req, &s->qdev.requests, next) {
|
|
r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
if (r->status & SCSI_REQ_STATUS_RETRY) {
|
|
int status = r->status;
|
|
int ret;
|
|
|
|
r->status &=
|
|
~(SCSI_REQ_STATUS_RETRY | SCSI_REQ_STATUS_RETRY_TYPE_MASK);
|
|
|
|
switch (status & SCSI_REQ_STATUS_RETRY_TYPE_MASK) {
|
|
case SCSI_REQ_STATUS_RETRY_READ:
|
|
scsi_read_data(&r->req);
|
|
break;
|
|
case SCSI_REQ_STATUS_RETRY_WRITE:
|
|
scsi_write_data(&r->req);
|
|
break;
|
|
case SCSI_REQ_STATUS_RETRY_FLUSH:
|
|
ret = scsi_disk_emulate_command(r);
|
|
if (ret == 0) {
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void scsi_dma_restart_cb(void *opaque, int running, RunState state)
|
|
{
|
|
SCSIDiskState *s = opaque;
|
|
|
|
if (!running)
|
|
return;
|
|
|
|
if (!s->bh) {
|
|
s->bh = qemu_bh_new(scsi_dma_restart_bh, s);
|
|
qemu_bh_schedule(s->bh);
|
|
}
|
|
}
|
|
|
|
/* 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_inquiry(SCSIRequest *req, uint8_t *outbuf)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
int buflen = 0;
|
|
|
|
if (req->cmd.buf[1] & 0x2) {
|
|
/* Command support data - optional, not implemented */
|
|
BADF("optional INQUIRY command support request not implemented\n");
|
|
return -1;
|
|
}
|
|
|
|
if (req->cmd.buf[1] & 0x1) {
|
|
/* Vital product data */
|
|
uint8_t page_code = req->cmd.buf[2];
|
|
if (req->cmd.xfer < 4) {
|
|
BADF("Error: Inquiry (EVPD[%02X]) buffer size %zd is "
|
|
"less than 4\n", page_code, req->cmd.xfer);
|
|
return -1;
|
|
}
|
|
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
outbuf[buflen++] = 5;
|
|
} else {
|
|
outbuf[buflen++] = 0;
|
|
}
|
|
outbuf[buflen++] = page_code ; // this page
|
|
outbuf[buflen++] = 0x00;
|
|
|
|
switch (page_code) {
|
|
case 0x00: /* Supported page codes, mandatory */
|
|
{
|
|
int pages;
|
|
DPRINTF("Inquiry EVPD[Supported pages] "
|
|
"buffer size %zd\n", req->cmd.xfer);
|
|
pages = buflen++;
|
|
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++] = 0xb2; // thin provisioning
|
|
}
|
|
outbuf[pages] = buflen - pages - 1; // number of pages
|
|
break;
|
|
}
|
|
case 0x80: /* Device serial number, optional */
|
|
{
|
|
int l;
|
|
|
|
if (!s->serial) {
|
|
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
|
return -1;
|
|
}
|
|
|
|
l = strlen(s->serial);
|
|
if (l > req->cmd.xfer)
|
|
l = req->cmd.xfer;
|
|
if (l > 20)
|
|
l = 20;
|
|
|
|
DPRINTF("Inquiry EVPD[Serial number] "
|
|
"buffer size %zd\n", req->cmd.xfer);
|
|
outbuf[buflen++] = l;
|
|
memcpy(outbuf+buflen, s->serial, l);
|
|
buflen += l;
|
|
break;
|
|
}
|
|
|
|
case 0x83: /* Device identification page, mandatory */
|
|
{
|
|
int max_len = 255 - 8;
|
|
int id_len = strlen(bdrv_get_device_name(s->bs));
|
|
|
|
if (id_len > max_len)
|
|
id_len = max_len;
|
|
DPRINTF("Inquiry EVPD[Device identification] "
|
|
"buffer size %zd\n", req->cmd.xfer);
|
|
|
|
outbuf[buflen++] = 4 + 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, bdrv_get_device_name(s->bs), id_len);
|
|
buflen += id_len;
|
|
break;
|
|
}
|
|
case 0xb0: /* block limits */
|
|
{
|
|
unsigned int unmap_sectors =
|
|
s->qdev.conf.discard_granularity / s->qdev.blocksize;
|
|
unsigned int min_io_size =
|
|
s->qdev.conf.min_io_size / s->qdev.blocksize;
|
|
unsigned int opt_io_size =
|
|
s->qdev.conf.opt_io_size / s->qdev.blocksize;
|
|
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
|
page_code);
|
|
return -1;
|
|
}
|
|
/* required VPD size with unmap support */
|
|
outbuf[3] = buflen = 0x3c;
|
|
|
|
memset(outbuf + 4, 0, buflen - 4);
|
|
|
|
/* optimal transfer length granularity */
|
|
outbuf[6] = (min_io_size >> 8) & 0xff;
|
|
outbuf[7] = min_io_size & 0xff;
|
|
|
|
/* optimal transfer length */
|
|
outbuf[12] = (opt_io_size >> 24) & 0xff;
|
|
outbuf[13] = (opt_io_size >> 16) & 0xff;
|
|
outbuf[14] = (opt_io_size >> 8) & 0xff;
|
|
outbuf[15] = opt_io_size & 0xff;
|
|
|
|
/* optimal unmap granularity */
|
|
outbuf[28] = (unmap_sectors >> 24) & 0xff;
|
|
outbuf[29] = (unmap_sectors >> 16) & 0xff;
|
|
outbuf[30] = (unmap_sectors >> 8) & 0xff;
|
|
outbuf[31] = unmap_sectors & 0xff;
|
|
break;
|
|
}
|
|
case 0xb2: /* thin provisioning */
|
|
{
|
|
outbuf[3] = buflen = 8;
|
|
outbuf[4] = 0;
|
|
outbuf[5] = 0x40; /* write same with unmap supported */
|
|
outbuf[6] = 0;
|
|
outbuf[7] = 0;
|
|
break;
|
|
}
|
|
default:
|
|
BADF("Error: unsupported Inquiry (EVPD[%02X]) "
|
|
"buffer size %zd\n", page_code, req->cmd.xfer);
|
|
return -1;
|
|
}
|
|
/* done with EVPD */
|
|
return buflen;
|
|
}
|
|
|
|
/* Standard INQUIRY data */
|
|
if (req->cmd.buf[2] != 0) {
|
|
BADF("Error: Inquiry (STANDARD) page or code "
|
|
"is non-zero [%02X]\n", req->cmd.buf[2]);
|
|
return -1;
|
|
}
|
|
|
|
/* PAGE CODE == 0 */
|
|
if (req->cmd.xfer < 5) {
|
|
BADF("Error: Inquiry (STANDARD) buffer size %zd "
|
|
"is less than 5\n", req->cmd.xfer);
|
|
return -1;
|
|
}
|
|
|
|
buflen = req->cmd.xfer;
|
|
if (buflen > SCSI_MAX_INQUIRY_LEN)
|
|
buflen = SCSI_MAX_INQUIRY_LEN;
|
|
|
|
memset(outbuf, 0, buflen);
|
|
|
|
outbuf[0] = s->qdev.type & 0x1f;
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
outbuf[1] = 0x80;
|
|
memcpy(&outbuf[16], "QEMU CD-ROM ", 16);
|
|
} else {
|
|
outbuf[1] = s->removable ? 0x80 : 0;
|
|
memcpy(&outbuf[16], "QEMU HARDDISK ", 16);
|
|
}
|
|
memcpy(&outbuf[8], "QEMU ", 8);
|
|
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] = 5;
|
|
outbuf[3] = 2; /* Format 2 */
|
|
|
|
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->tcq ? 0x02 : 0);
|
|
return buflen;
|
|
}
|
|
|
|
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
|
|
int page_control)
|
|
{
|
|
BlockDriverState *bdrv = s->bs;
|
|
int cylinders, heads, secs;
|
|
uint8_t *p = *p_outbuf;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
switch (page) {
|
|
case 4: /* Rigid disk device geometry page. */
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
p[0] = 4;
|
|
p[1] = 0x16;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
/* if a geometry hint is available, use it */
|
|
bdrv_get_geometry_hint(bdrv, &cylinders, &heads, &secs);
|
|
p[2] = (cylinders >> 16) & 0xff;
|
|
p[3] = (cylinders >> 8) & 0xff;
|
|
p[4] = cylinders & 0xff;
|
|
p[5] = heads & 0xff;
|
|
/* Write precomp start cylinder, disabled */
|
|
p[6] = (cylinders >> 16) & 0xff;
|
|
p[7] = (cylinders >> 8) & 0xff;
|
|
p[8] = cylinders & 0xff;
|
|
/* Reduced current start cylinder, disabled */
|
|
p[9] = (cylinders >> 16) & 0xff;
|
|
p[10] = (cylinders >> 8) & 0xff;
|
|
p[11] = cylinders & 0xff;
|
|
/* Device step rate [ns], 200ns */
|
|
p[12] = 0;
|
|
p[13] = 200;
|
|
/* Landing zone cylinder */
|
|
p[14] = 0xff;
|
|
p[15] = 0xff;
|
|
p[16] = 0xff;
|
|
/* Medium rotation rate [rpm], 5400 rpm */
|
|
p[20] = (5400 >> 8) & 0xff;
|
|
p[21] = 5400 & 0xff;
|
|
break;
|
|
|
|
case 5: /* Flexible disk device geometry page. */
|
|
if (s->qdev.type == TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
p[0] = 5;
|
|
p[1] = 0x1e;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
/* Transfer rate [kbit/s], 5Mbit/s */
|
|
p[2] = 5000 >> 8;
|
|
p[3] = 5000 & 0xff;
|
|
/* if a geometry hint is available, use it */
|
|
bdrv_get_geometry_hint(bdrv, &cylinders, &heads, &secs);
|
|
p[4] = heads & 0xff;
|
|
p[5] = secs & 0xff;
|
|
p[6] = s->cluster_size * 2;
|
|
p[8] = (cylinders >> 8) & 0xff;
|
|
p[9] = cylinders & 0xff;
|
|
/* Write precomp start cylinder, disabled */
|
|
p[10] = (cylinders >> 8) & 0xff;
|
|
p[11] = cylinders & 0xff;
|
|
/* Reduced current start cylinder, disabled */
|
|
p[12] = (cylinders >> 8) & 0xff;
|
|
p[13] = cylinders & 0xff;
|
|
/* Device step rate [100us], 100us */
|
|
p[14] = 0;
|
|
p[15] = 1;
|
|
/* Device step pulse width [us], 1us */
|
|
p[16] = 1;
|
|
/* Device head settle delay [100us], 100us */
|
|
p[17] = 0;
|
|
p[18] = 1;
|
|
/* Motor on delay [0.1s], 0.1s */
|
|
p[19] = 1;
|
|
/* Motor off delay [0.1s], 0.1s */
|
|
p[20] = 1;
|
|
/* Medium rotation rate [rpm], 5400 rpm */
|
|
p[28] = (5400 >> 8) & 0xff;
|
|
p[29] = 5400 & 0xff;
|
|
break;
|
|
|
|
case 8: /* Caching page. */
|
|
p[0] = 8;
|
|
p[1] = 0x12;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
if (bdrv_enable_write_cache(s->bs)) {
|
|
p[2] = 4; /* WCE */
|
|
}
|
|
break;
|
|
|
|
case 0x2a: /* CD Capabilities and Mechanical Status page. */
|
|
if (s->qdev.type != TYPE_ROM) {
|
|
return -1;
|
|
}
|
|
p[0] = 0x2a;
|
|
p[1] = 0x14;
|
|
if (page_control == 1) { /* Changeable Values */
|
|
break;
|
|
}
|
|
p[2] = 3; // CD-R & CD-RW read
|
|
p[3] = 0; // Writing not supported
|
|
p[4] = 0x7f; /* Audio, composite, digital out,
|
|
mode 2 form 1&2, multi session */
|
|
p[5] = 0xff; /* CD DA, DA accurate, RW supported,
|
|
RW corrected, C2 errors, ISRC,
|
|
UPC, Bar code */
|
|
p[6] = 0x2d | (s->tray_locked ? 2 : 0);
|
|
/* Locking supported, jumper present, eject, tray */
|
|
p[7] = 0; /* no volume & mute control, no
|
|
changer */
|
|
p[8] = (50 * 176) >> 8; // 50x read speed
|
|
p[9] = (50 * 176) & 0xff;
|
|
p[10] = 0 >> 8; // No volume
|
|
p[11] = 0 & 0xff;
|
|
p[12] = 2048 >> 8; // 2M buffer
|
|
p[13] = 2048 & 0xff;
|
|
p[14] = (16 * 176) >> 8; // 16x read speed current
|
|
p[15] = (16 * 176) & 0xff;
|
|
p[18] = (16 * 176) >> 8; // 16x write speed
|
|
p[19] = (16 * 176) & 0xff;
|
|
p[20] = (16 * 176) >> 8; // 16x write speed current
|
|
p[21] = (16 * 176) & 0xff;
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
*p_outbuf += p[1] + 2;
|
|
return p[1] + 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;
|
|
int page, dbd, buflen, ret, page_control;
|
|
uint8_t *p;
|
|
uint8_t dev_specific_param;
|
|
|
|
dbd = r->req.cmd.buf[1] & 0x8;
|
|
page = r->req.cmd.buf[2] & 0x3f;
|
|
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6;
|
|
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
|
(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 (bdrv_is_read_only(s->bs)) {
|
|
dev_specific_param = 0x80; /* Readonly. */
|
|
} else {
|
|
dev_specific_param = 0x00;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
bdrv_get_geometry(s->bs, &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->cluster_size;
|
|
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->cluster_size * 2;
|
|
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;
|
|
}
|
|
if (buflen > r->req.cmd.xfer)
|
|
buflen = r->req.cmd.xfer;
|
|
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];
|
|
bdrv_get_geometry(s->bs, &nb_sectors);
|
|
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1);
|
|
nb_sectors /= s->cluster_size;
|
|
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;
|
|
}
|
|
if (toclen > req->cmd.xfer)
|
|
toclen = req->cmd.xfer;
|
|
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 */
|
|
|
|
if (s->qdev.type == TYPE_ROM && loej) {
|
|
if (!start && !s->tray_open && s->tray_locked) {
|
|
scsi_check_condition(r,
|
|
bdrv_is_inserted(s->bs)
|
|
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED)
|
|
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED));
|
|
return -1;
|
|
}
|
|
bdrv_eject(s->bs, !start);
|
|
s->tray_open = !start;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int scsi_disk_emulate_command(SCSIDiskReq *r)
|
|
{
|
|
SCSIRequest *req = &r->req;
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
uint64_t nb_sectors;
|
|
uint8_t *outbuf;
|
|
int buflen = 0;
|
|
|
|
if (!r->iov.iov_base) {
|
|
/*
|
|
* 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);
|
|
r->iov.iov_base = qemu_blockalign(s->bs, r->buflen);
|
|
}
|
|
|
|
outbuf = r->iov.iov_base;
|
|
switch (req->cmd.buf[0]) {
|
|
case TEST_UNIT_READY:
|
|
if (s->tray_open || !bdrv_is_inserted(s->bs))
|
|
goto not_ready;
|
|
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 -1;
|
|
}
|
|
break;
|
|
case ALLOW_MEDIUM_REMOVAL:
|
|
s->tray_locked = req->cmd.buf[4] & 1;
|
|
bdrv_lock_medium(s->bs, req->cmd.buf[4] & 1);
|
|
break;
|
|
case READ_CAPACITY_10:
|
|
/* The normal LEN field for this command is zero. */
|
|
memset(outbuf, 0, 8);
|
|
bdrv_get_geometry(s->bs, &nb_sectors);
|
|
if (!nb_sectors)
|
|
goto not_ready;
|
|
nb_sectors /= s->cluster_size;
|
|
/* Returned value is the address of the last sector. */
|
|
nb_sectors--;
|
|
/* Remember the new size for read/write sanity checking. */
|
|
s->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->cluster_size * 2;
|
|
outbuf[7] = 0;
|
|
buflen = 8;
|
|
break;
|
|
case GET_CONFIGURATION:
|
|
memset(outbuf, 0, 8);
|
|
/* ??? This should probably return much more information. For now
|
|
just return the basic header indicating the CD-ROM profile. */
|
|
outbuf[7] = 8; // CD-ROM
|
|
buflen = 8;
|
|
break;
|
|
case SERVICE_ACTION_IN_16:
|
|
/* Service Action In subcommands. */
|
|
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) {
|
|
DPRINTF("SAI READ CAPACITY(16)\n");
|
|
memset(outbuf, 0, req->cmd.xfer);
|
|
bdrv_get_geometry(s->bs, &nb_sectors);
|
|
if (!nb_sectors)
|
|
goto not_ready;
|
|
nb_sectors /= s->cluster_size;
|
|
/* Returned value is the address of the last sector. */
|
|
nb_sectors--;
|
|
/* Remember the new size for read/write sanity checking. */
|
|
s->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->cluster_size * 2;
|
|
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. */
|
|
buflen = req->cmd.xfer;
|
|
break;
|
|
}
|
|
DPRINTF("Unsupported Service Action In\n");
|
|
goto illegal_request;
|
|
case VERIFY_10:
|
|
break;
|
|
default:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
|
|
return -1;
|
|
}
|
|
return buflen;
|
|
|
|
not_ready:
|
|
if (s->tray_open || !bdrv_is_inserted(s->bs)) {
|
|
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
|
|
} else {
|
|
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
|
|
}
|
|
return -1;
|
|
|
|
illegal_request:
|
|
if (r->req.status == -1) {
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* 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_send_command(SCSIRequest *req, uint8_t *buf)
|
|
{
|
|
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
|
int32_t len;
|
|
uint8_t command;
|
|
int rc;
|
|
|
|
command = buf[0];
|
|
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]);
|
|
|
|
#ifdef DEBUG_SCSI
|
|
{
|
|
int i;
|
|
for (i = 1; i < r->req.cmd.len; i++) {
|
|
printf(" 0x%02x", buf[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
switch (command) {
|
|
case TEST_UNIT_READY:
|
|
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 READ_CAPACITY_10:
|
|
case READ_TOC:
|
|
case GET_CONFIGURATION:
|
|
case SERVICE_ACTION_IN_16:
|
|
case VERIFY_10:
|
|
rc = scsi_disk_emulate_command(r);
|
|
if (rc < 0) {
|
|
return 0;
|
|
}
|
|
|
|
r->iov.iov_len = rc;
|
|
break;
|
|
case SYNCHRONIZE_CACHE:
|
|
bdrv_acct_start(s->bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
|
r->req.aiocb = bdrv_aio_flush(s->bs, scsi_flush_complete, r);
|
|
if (r->req.aiocb == NULL) {
|
|
scsi_flush_complete(r, -EIO);
|
|
}
|
|
return 0;
|
|
case READ_6:
|
|
case READ_10:
|
|
case READ_12:
|
|
case READ_16:
|
|
len = r->req.cmd.xfer / s->qdev.blocksize;
|
|
DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len);
|
|
if (r->req.cmd.lba > s->max_lba)
|
|
goto illegal_lba;
|
|
r->sector = r->req.cmd.lba * s->cluster_size;
|
|
r->sector_count = len * s->cluster_size;
|
|
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:
|
|
len = r->req.cmd.xfer / s->qdev.blocksize;
|
|
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n",
|
|
(command & 0xe) == 0xe ? "And Verify " : "",
|
|
r->req.cmd.lba, len);
|
|
if (r->req.cmd.lba > s->max_lba)
|
|
goto illegal_lba;
|
|
r->sector = r->req.cmd.lba * s->cluster_size;
|
|
r->sector_count = len * s->cluster_size;
|
|
break;
|
|
case MODE_SELECT:
|
|
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer);
|
|
/* We don't support mode parameter changes.
|
|
Allow the mode parameter header + block descriptors only. */
|
|
if (r->req.cmd.xfer > 12) {
|
|
goto fail;
|
|
}
|
|
break;
|
|
case MODE_SELECT_10:
|
|
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer);
|
|
/* We don't support mode parameter changes.
|
|
Allow the mode parameter header + block descriptors only. */
|
|
if (r->req.cmd.xfer > 16) {
|
|
goto fail;
|
|
}
|
|
break;
|
|
case SEEK_6:
|
|
case SEEK_10:
|
|
DPRINTF("Seek(%d) (sector %" PRId64 ")\n", command == SEEK_6 ? 6 : 10,
|
|
r->req.cmd.lba);
|
|
if (r->req.cmd.lba > s->max_lba) {
|
|
goto illegal_lba;
|
|
}
|
|
break;
|
|
case WRITE_SAME_16:
|
|
len = r->req.cmd.xfer / s->qdev.blocksize;
|
|
|
|
DPRINTF("WRITE SAME(16) (sector %" PRId64 ", count %d)\n",
|
|
r->req.cmd.lba, len);
|
|
|
|
if (r->req.cmd.lba > s->max_lba) {
|
|
goto illegal_lba;
|
|
}
|
|
|
|
/*
|
|
* We only support WRITE SAME with the unmap bit set for now.
|
|
*/
|
|
if (!(buf[1] & 0x8)) {
|
|
goto fail;
|
|
}
|
|
|
|
rc = bdrv_discard(s->bs, r->req.cmd.lba * s->cluster_size,
|
|
len * s->cluster_size);
|
|
if (rc < 0) {
|
|
/* XXX: better error code ?*/
|
|
goto fail;
|
|
}
|
|
|
|
break;
|
|
case REQUEST_SENSE:
|
|
abort();
|
|
default:
|
|
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
|
|
return 0;
|
|
fail:
|
|
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
|
|
return 0;
|
|
illegal_lba:
|
|
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
|
|
return 0;
|
|
}
|
|
if (r->sector_count == 0 && r->iov.iov_len == 0) {
|
|
scsi_req_complete(&r->req, GOOD);
|
|
}
|
|
len = r->sector_count * 512 + r->iov.iov_len;
|
|
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
|
return -len;
|
|
} else {
|
|
if (!r->sector_count)
|
|
r->sector_count = -1;
|
|
return len;
|
|
}
|
|
}
|
|
|
|
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));
|
|
|
|
bdrv_get_geometry(s->bs, &nb_sectors);
|
|
nb_sectors /= s->cluster_size;
|
|
if (nb_sectors) {
|
|
nb_sectors--;
|
|
}
|
|
s->max_lba = nb_sectors;
|
|
}
|
|
|
|
static void scsi_destroy(SCSIDevice *dev)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
|
|
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE));
|
|
blockdev_mark_auto_del(s->qdev.conf.bs);
|
|
}
|
|
|
|
static void scsi_cd_change_media_cb(void *opaque, bool load)
|
|
{
|
|
((SCSIDiskState *)opaque)->tray_open = !load;
|
|
}
|
|
|
|
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_cd_block_ops = {
|
|
.change_media_cb = scsi_cd_change_media_cb,
|
|
.is_tray_open = scsi_cd_is_tray_open,
|
|
.is_medium_locked = scsi_cd_is_medium_locked,
|
|
};
|
|
|
|
static int scsi_initfn(SCSIDevice *dev, uint8_t scsi_type)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
|
|
DriveInfo *dinfo;
|
|
|
|
if (!s->qdev.conf.bs) {
|
|
error_report("scsi-disk: drive property not set");
|
|
return -1;
|
|
}
|
|
s->bs = s->qdev.conf.bs;
|
|
|
|
if (scsi_type == TYPE_DISK && !bdrv_is_inserted(s->bs)) {
|
|
error_report("Device needs media, but drive is empty");
|
|
return -1;
|
|
}
|
|
|
|
if (!s->serial) {
|
|
/* try to fall back to value set with legacy -drive serial=... */
|
|
dinfo = drive_get_by_blockdev(s->bs);
|
|
if (*dinfo->serial) {
|
|
s->serial = g_strdup(dinfo->serial);
|
|
}
|
|
}
|
|
|
|
if (!s->version) {
|
|
s->version = g_strdup(QEMU_VERSION);
|
|
}
|
|
|
|
if (bdrv_is_sg(s->bs)) {
|
|
error_report("scsi-disk: unwanted /dev/sg*");
|
|
return -1;
|
|
}
|
|
|
|
if (scsi_type == TYPE_ROM) {
|
|
bdrv_set_dev_ops(s->bs, &scsi_cd_block_ops, s);
|
|
s->qdev.blocksize = 2048;
|
|
} else if (scsi_type == TYPE_DISK) {
|
|
s->qdev.blocksize = s->qdev.conf.logical_block_size;
|
|
} else {
|
|
error_report("scsi-disk: Unhandled SCSI type %02x", scsi_type);
|
|
return -1;
|
|
}
|
|
s->cluster_size = s->qdev.blocksize / 512;
|
|
bdrv_set_buffer_alignment(s->bs, s->qdev.blocksize);
|
|
|
|
s->qdev.type = scsi_type;
|
|
qemu_add_vm_change_state_handler(scsi_dma_restart_cb, s);
|
|
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, ",0");
|
|
return 0;
|
|
}
|
|
|
|
static int scsi_hd_initfn(SCSIDevice *dev)
|
|
{
|
|
return scsi_initfn(dev, TYPE_DISK);
|
|
}
|
|
|
|
static int scsi_cd_initfn(SCSIDevice *dev)
|
|
{
|
|
return scsi_initfn(dev, TYPE_ROM);
|
|
}
|
|
|
|
static int scsi_disk_initfn(SCSIDevice *dev)
|
|
{
|
|
DriveInfo *dinfo;
|
|
uint8_t scsi_type;
|
|
|
|
if (!dev->conf.bs) {
|
|
scsi_type = TYPE_DISK; /* will die in scsi_initfn() */
|
|
} else {
|
|
dinfo = drive_get_by_blockdev(dev->conf.bs);
|
|
scsi_type = dinfo->media_cd ? TYPE_ROM : TYPE_DISK;
|
|
}
|
|
|
|
return scsi_initfn(dev, scsi_type);
|
|
}
|
|
|
|
static SCSIReqOps scsi_disk_reqops = {
|
|
.size = sizeof(SCSIDiskReq),
|
|
.free_req = scsi_free_request,
|
|
.send_command = scsi_send_command,
|
|
.read_data = scsi_read_data,
|
|
.write_data = scsi_write_data,
|
|
.cancel_io = scsi_cancel_io,
|
|
.get_buf = scsi_get_buf,
|
|
};
|
|
|
|
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag,
|
|
uint32_t lun, void *hba_private)
|
|
{
|
|
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
|
|
SCSIRequest *req;
|
|
|
|
req = scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun, hba_private);
|
|
return req;
|
|
}
|
|
|
|
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
|
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \
|
|
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
|
DEFINE_PROP_STRING("serial", SCSIDiskState, serial)
|
|
|
|
static SCSIDeviceInfo scsi_disk_info[] = {
|
|
{
|
|
.qdev.name = "scsi-hd",
|
|
.qdev.fw_name = "disk",
|
|
.qdev.desc = "virtual SCSI disk",
|
|
.qdev.size = sizeof(SCSIDiskState),
|
|
.qdev.reset = scsi_disk_reset,
|
|
.init = scsi_hd_initfn,
|
|
.destroy = scsi_destroy,
|
|
.alloc_req = scsi_new_request,
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_SCSI_DISK_PROPERTIES(),
|
|
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
}
|
|
},{
|
|
.qdev.name = "scsi-cd",
|
|
.qdev.fw_name = "disk",
|
|
.qdev.desc = "virtual SCSI CD-ROM",
|
|
.qdev.size = sizeof(SCSIDiskState),
|
|
.qdev.reset = scsi_disk_reset,
|
|
.init = scsi_cd_initfn,
|
|
.destroy = scsi_destroy,
|
|
.alloc_req = scsi_new_request,
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_SCSI_DISK_PROPERTIES(),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
},
|
|
},{
|
|
.qdev.name = "scsi-disk", /* legacy -device scsi-disk */
|
|
.qdev.fw_name = "disk",
|
|
.qdev.desc = "virtual SCSI disk or CD-ROM (legacy)",
|
|
.qdev.size = sizeof(SCSIDiskState),
|
|
.qdev.reset = scsi_disk_reset,
|
|
.init = scsi_disk_initfn,
|
|
.destroy = scsi_destroy,
|
|
.alloc_req = scsi_new_request,
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_SCSI_DISK_PROPERTIES(),
|
|
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
}
|
|
}
|
|
};
|
|
|
|
static void scsi_disk_register_devices(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(scsi_disk_info); i++) {
|
|
scsi_qdev_register(&scsi_disk_info[i]);
|
|
}
|
|
}
|
|
device_init(scsi_disk_register_devices)
|