mirror of
https://github.com/qemu/qemu.git
synced 2024-11-30 07:13:38 +08:00
scsi-disk: restruct emulation: MODE_SENSE
Move MODE_SENSE emulation from scsi_send_command() to scsi_disk_emulate_command(). Create two helper functions: mode_sense_page() which writes the actual mode pages and scsi_disk_emulate_mode_sense() which holds the longish MODE_SENSE emulation code, calling into mode_sense_page() as needed. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann
Anthony Liguori
parent
3d53ba18f5
commit
ebddfcbe14
335
hw/scsi-disk.c
335
hw/scsi-disk.c
@ -440,6 +440,181 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
|
||||
return buflen;
|
||||
}
|
||||
|
||||
static int mode_sense_page(SCSIRequest *req, int page, uint8_t *p)
|
||||
{
|
||||
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
||||
BlockDriverState *bdrv = req->dev->dinfo->bdrv;
|
||||
int cylinders, heads, secs;
|
||||
|
||||
switch (page) {
|
||||
case 4: /* Rigid disk device geometry page. */
|
||||
p[0] = 4;
|
||||
p[1] = 0x16;
|
||||
/* 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;
|
||||
return 0x16;
|
||||
|
||||
case 5: /* Flexible disk device geometry page. */
|
||||
p[0] = 5;
|
||||
p[1] = 0x1e;
|
||||
/* 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;
|
||||
return 0x1e;
|
||||
|
||||
case 8: /* Caching page. */
|
||||
p[0] = 8;
|
||||
p[1] = 0x12;
|
||||
if (bdrv_enable_write_cache(s->qdev.dinfo->bdrv)) {
|
||||
p[2] = 4; /* WCE */
|
||||
}
|
||||
return 20;
|
||||
|
||||
case 0x2a: /* CD Capabilities and Mechanical Status page. */
|
||||
if (bdrv_get_type_hint(bdrv) != BDRV_TYPE_CDROM)
|
||||
return 0;
|
||||
p[0] = 0x2a;
|
||||
p[1] = 0x14;
|
||||
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 | (bdrv_is_locked(s->qdev.dinfo->bdrv)? 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;
|
||||
return 22;
|
||||
|
||||
default:
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static int scsi_disk_emulate_mode_sense(SCSIRequest *req, uint8_t *outbuf)
|
||||
{
|
||||
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
|
||||
BlockDriverState *bdrv = req->dev->dinfo->bdrv;
|
||||
uint64_t nb_sectors;
|
||||
int page, dbd, buflen;
|
||||
uint8_t *p;
|
||||
|
||||
dbd = req->cmd.buf[1] & 0x8;
|
||||
page = req->cmd.buf[2] & 0x3f;
|
||||
DPRINTF("Mode Sense (page %d, len %zd)\n", page, req->cmd.xfer);
|
||||
memset(outbuf, 0, req->cmd.xfer);
|
||||
p = outbuf;
|
||||
|
||||
p[1] = 0; /* Default media type. */
|
||||
p[3] = 0; /* Block descriptor length. */
|
||||
if (bdrv_get_type_hint(bdrv) == BDRV_TYPE_CDROM ||
|
||||
bdrv_is_read_only(bdrv)) {
|
||||
p[2] = 0x80; /* Readonly. */
|
||||
}
|
||||
p += 4;
|
||||
|
||||
bdrv_get_geometry(bdrv, &nb_sectors);
|
||||
if ((~dbd) & nb_sectors) {
|
||||
outbuf[3] = 8; /* Block descriptor length */
|
||||
nb_sectors /= s->cluster_size;
|
||||
nb_sectors--;
|
||||
if (nb_sectors > 0xffffff)
|
||||
nb_sectors = 0xffffff;
|
||||
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;
|
||||
}
|
||||
|
||||
switch (page) {
|
||||
case 0x04:
|
||||
case 0x05:
|
||||
case 0x08:
|
||||
case 0x2a:
|
||||
p += mode_sense_page(req, page, p);
|
||||
break;
|
||||
case 0x3f:
|
||||
p += mode_sense_page(req, 0x08, p);
|
||||
p += mode_sense_page(req, 0x2a, p);
|
||||
break;
|
||||
}
|
||||
|
||||
buflen = p - outbuf;
|
||||
outbuf[0] = buflen - 4;
|
||||
if (buflen > req->cmd.xfer)
|
||||
buflen = req->cmd.xfer;
|
||||
return buflen;
|
||||
}
|
||||
|
||||
static int scsi_disk_emulate_command(SCSIRequest *req, uint8_t *outbuf)
|
||||
{
|
||||
BlockDriverState *bdrv = req->dev->dinfo->bdrv;
|
||||
@ -473,6 +648,12 @@ static int scsi_disk_emulate_command(SCSIRequest *req, uint8_t *outbuf)
|
||||
if (buflen < 0)
|
||||
goto illegal_request;
|
||||
break;
|
||||
case MODE_SENSE:
|
||||
case MODE_SENSE_10:
|
||||
buflen = scsi_disk_emulate_mode_sense(req, outbuf);
|
||||
if (buflen < 0)
|
||||
goto illegal_request;
|
||||
break;
|
||||
case RESERVE:
|
||||
if (req->cmd.buf[1] & 1)
|
||||
goto illegal_request;
|
||||
@ -594,6 +775,8 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
|
||||
case TEST_UNIT_READY:
|
||||
case REQUEST_SENSE:
|
||||
case INQUIRY:
|
||||
case MODE_SENSE:
|
||||
case MODE_SENSE_10:
|
||||
case RESERVE:
|
||||
case RESERVE_10:
|
||||
case RELEASE:
|
||||
@ -607,158 +790,6 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
|
||||
return 0;
|
||||
}
|
||||
break;
|
||||
case MODE_SENSE:
|
||||
case MODE_SENSE_10:
|
||||
{
|
||||
uint8_t *p;
|
||||
int page;
|
||||
int dbd;
|
||||
|
||||
dbd = buf[1] & 0x8;
|
||||
page = buf[2] & 0x3f;
|
||||
DPRINTF("Mode Sense (page %d, len %d)\n", page, len);
|
||||
p = outbuf;
|
||||
memset(p, 0, 4);
|
||||
outbuf[1] = 0; /* Default media type. */
|
||||
outbuf[3] = 0; /* Block descriptor length. */
|
||||
if (bdrv_get_type_hint(s->qdev.dinfo->bdrv) == BDRV_TYPE_CDROM ||
|
||||
bdrv_is_read_only(s->qdev.dinfo->bdrv)) {
|
||||
outbuf[2] = 0x80; /* Readonly. */
|
||||
}
|
||||
p += 4;
|
||||
bdrv_get_geometry(s->qdev.dinfo->bdrv, &nb_sectors);
|
||||
if ((~dbd) & nb_sectors) {
|
||||
nb_sectors /= s->cluster_size;
|
||||
nb_sectors--;
|
||||
if (nb_sectors > 0xffffff)
|
||||
nb_sectors = 0xffffff;
|
||||
outbuf[3] = 8; /* Block descriptor length */
|
||||
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 == 4) {
|
||||
int cylinders, heads, secs;
|
||||
|
||||
/* Rigid disk device geometry page. */
|
||||
p[0] = 4;
|
||||
p[1] = 0x16;
|
||||
/* if a geometry hint is available, use it */
|
||||
bdrv_get_geometry_hint(s->qdev.dinfo->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;
|
||||
p += 0x16;
|
||||
} else if (page == 5) {
|
||||
int cylinders, heads, secs;
|
||||
|
||||
/* Flexible disk device geometry page. */
|
||||
p[0] = 5;
|
||||
p[1] = 0x1e;
|
||||
/* 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(s->qdev.dinfo->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;
|
||||
p += 0x1e;
|
||||
} else if ((page == 8 || page == 0x3f)) {
|
||||
/* Caching page. */
|
||||
memset(p,0,20);
|
||||
p[0] = 8;
|
||||
p[1] = 0x12;
|
||||
if (bdrv_enable_write_cache(s->qdev.dinfo->bdrv)) {
|
||||
p[2] = 4; /* WCE */
|
||||
}
|
||||
p += 20;
|
||||
}
|
||||
if ((page == 0x3f || page == 0x2a)
|
||||
&& (bdrv_get_type_hint(s->qdev.dinfo->bdrv) == BDRV_TYPE_CDROM)) {
|
||||
/* CD Capabilities and Mechanical Status page. */
|
||||
p[0] = 0x2a;
|
||||
p[1] = 0x14;
|
||||
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 | (bdrv_is_locked(s->qdev.dinfo->bdrv)? 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;
|
||||
p += 22;
|
||||
}
|
||||
r->iov.iov_len = p - outbuf;
|
||||
outbuf[0] = r->iov.iov_len - 4;
|
||||
if (r->iov.iov_len > len)
|
||||
r->iov.iov_len = len;
|
||||
}
|
||||
break;
|
||||
case START_STOP:
|
||||
DPRINTF("Start Stop Unit\n");
|
||||
if (bdrv_get_type_hint(s->qdev.dinfo->bdrv) == BDRV_TYPE_CDROM &&
|
||||
|
||||
Loading…
Reference in New Issue
Block a user