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Merge remote branch 'kwolf/for-anthony' into staging

This commit is contained in:
Anthony Liguori 2010-11-30 15:25:34 -06:00
parent 9233da785f b76876e602
commit 09fa35e5cd
23 changed files with 237 additions and 248 deletions
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14
block-migration.c
View File

@ -146,8 +146,7 @@ static int bmds_aio_inflight(BlkMigDevState *bmds, int64_t sector)
{
int64_t chunk = sector / (int64_t)BDRV_SECTORS_PER_DIRTY_CHUNK;
if (bmds->aio_bitmap &&
(sector << BDRV_SECTOR_BITS) < bdrv_getlength(bmds->bs)) {
if ((sector << BDRV_SECTOR_BITS) < bdrv_getlength(bmds->bs)) {
return !!(bmds->aio_bitmap[chunk / (sizeof(unsigned long) * 8)] &
(1UL << (chunk % (sizeof(unsigned long) * 8))));
} else {
@ -169,13 +168,9 @@ static void bmds_set_aio_inflight(BlkMigDevState *bmds, int64_t sector_num,
bit = start % (sizeof(unsigned long) * 8);
val = bmds->aio_bitmap[idx];
if (set) {
if (!(val & (1UL << bit))) {
val |= 1UL << bit;
}
val |= 1UL << bit;
} else {
if (val & (1UL << bit)) {
val &= ~(1UL << bit);
}
val &= ~(1UL << bit);
}
bmds->aio_bitmap[idx] = val;
}
@ -385,8 +380,9 @@ static int mig_save_device_dirty(Monitor *mon, QEMUFile *f,
int nr_sectors;
for (sector = bmds->cur_dirty; sector < bmds->total_sectors;) {
if (bmds_aio_inflight(bmds, sector))
if (bmds_aio_inflight(bmds, sector)) {
qemu_aio_flush();
}
if (bdrv_get_dirty(bmds->bs, sector)) {
if (total_sectors - sector < BDRV_SECTORS_PER_DIRTY_CHUNK) {

1
block/qcow.c
View File

@ -54,7 +54,6 @@ typedef struct QCowHeader {
#define L2_CACHE_SIZE 16
typedef struct BDRVQcowState {
BlockDriverState *hd;
int cluster_bits;
int cluster_size;
int cluster_sectors;

1
block/qcow2.h
View File

@ -79,7 +79,6 @@ typedef struct QCowSnapshot {
} QCowSnapshot;
typedef struct BDRVQcowState {
BlockDriverState *hd;
int cluster_bits;
int cluster_size;
int cluster_sectors;

2
block/raw-posix.c
View File

@ -463,7 +463,7 @@ static int raw_pwrite(BlockDriverState *bs, int64_t offset,
count -= ret;
sum += ret;
}
/* here, count < 512 because (count & ~sector_mask) == 0 */
/* here, count < sector_size because (count & ~sector_mask) == 0 */
if (count) {
ret = raw_pread_aligned(bs, offset, s->aligned_buf,
bs->buffer_alignment);

1
block/vdi.c
View File

@ -186,7 +186,6 @@ typedef struct {
} VdiHeader;
typedef struct {
BlockDriverState *hd;
/* The block map entries are little endian (even in memory). */
uint32_t *bmap;
/* Size of block (bytes). */

1
block/vmdk.c
View File

@ -61,7 +61,6 @@ typedef struct {
#define L2_CACHE_SIZE 16
typedef struct BDRVVmdkState {
BlockDriverState *hd;
int64_t l1_table_offset;
int64_t l1_backup_table_offset;
uint32_t *l1_table;

2
block/vpc.c
View File

@ -110,8 +110,6 @@ struct vhd_dyndisk_header {
};
typedef struct BDRVVPCState {
BlockDriverState *hd;
uint8_t footer_buf[HEADER_SIZE];
uint64_t free_data_block_offset;
int max_table_entries;

39
blockdev.c
View File

@ -14,6 +14,8 @@
#include "qemu-option.h"
#include "qemu-config.h"
#include "sysemu.h"
#include "hw/qdev.h"
#include "block_int.h"
static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
@ -597,3 +599,40 @@ int do_change_block(Monitor *mon, const char *device,
}
return monitor_read_bdrv_key_start(mon, bs, NULL, NULL);
}
int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
const char *id = qdict_get_str(qdict, "id");
BlockDriverState *bs;
BlockDriverState **ptr;
Property *prop;
bs = bdrv_find(id);
if (!bs) {
qerror_report(QERR_DEVICE_NOT_FOUND, id);
return -1;
}
/* quiesce block driver; prevent further io */
qemu_aio_flush();
bdrv_flush(bs);
bdrv_close(bs);
/* clean up guest state from pointing to host resource by
* finding and removing DeviceState "drive" property */
for (prop = bs->peer->info->props; prop && prop->name; prop++) {
if (prop->info->type == PROP_TYPE_DRIVE) {
ptr = qdev_get_prop_ptr(bs->peer, prop);
if ((*ptr) == bs) {
bdrv_detach(bs, bs->peer);
*ptr = NULL;
break;
}
}
}
/* clean up host side */
drive_uninit(drive_get_by_blockdev(bs));
return 0;
}

3
blockdev.h
View File

@ -32,7 +32,7 @@ struct DriveInfo {
};
#define MAX_IDE_DEVS 2
#define MAX_SCSI_DEVS 7
#define MAX_SCSI_DEVS 255
DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
int drive_get_max_bus(BlockInterfaceType type);
@ -51,5 +51,6 @@ int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data);
int do_block_set_passwd(Monitor *mon, const QDict *qdict, QObject **ret_data);
int do_change_block(Monitor *mon, const char *device,
const char *filename, const char *fmt);
int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
#endif

18
hmp-commands.hx
View File

@ -65,6 +65,24 @@ STEXI
@item eject [-f] @var{device}
@findex eject
Eject a removable medium (use -f to force it).
ETEXI
{
.name = "drive_del",
.args_type = "id:s",
.params = "device",
.help = "remove host block device",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_drive_del,
},
STEXI
@item drive_del @var{device}
@findex drive_del
Remove host block device. The result is that guest generated IO is no longer
submitted against the host device underlying the disk. Once a drive has
been deleted, the QEMU Block layer returns -EIO which results in IO
errors in the guest for applications that are reading/writing to the device.
ETEXI
{

8
hw/ide/cmd646.c
View File

@ -179,12 +179,8 @@ static void bmdma_map(PCIDevice *pci_dev, int region_num,
register_ioport_read(addr, 4, 1, bmdma_readb_1, d);
}
register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
iorange_init(&bm->addr_ioport, &bmdma_addr_ioport_ops, addr + 4, 4);
ioport_register(&bm->addr_ioport);
addr += 8;
}
}

31
hw/ide/core.c
View File

@ -473,11 +473,21 @@ static void dma_buf_commit(IDEState *s, int is_write)
qemu_sglist_destroy(&s->sg);
}
static void ide_dma_set_inactive(BMDMAState *bm)
{
bm->status &= ~BM_STATUS_DMAING;
bm->dma_cb = NULL;
bm->unit = -1;
bm->aiocb = NULL;
}
void ide_dma_error(IDEState *s)
{
ide_transfer_stop(s);
s->error = ABRT_ERR;
s->status = READY_STAT | ERR_STAT;
ide_dma_set_inactive(s->bus->bmdma);
s->bus->bmdma->status |= BM_STATUS_INT;
ide_set_irq(s->bus);
}
@ -587,11 +597,8 @@ static void ide_read_dma_cb(void *opaque, int ret)
s->status = READY_STAT | SEEK_STAT;
ide_set_irq(s->bus);
eot:
bm->status &= ~BM_STATUS_DMAING;
bm->status |= BM_STATUS_INT;
bm->dma_cb = NULL;
bm->unit = -1;
bm->aiocb = NULL;
ide_dma_set_inactive(bm);
return;
}
@ -733,11 +740,8 @@ static void ide_write_dma_cb(void *opaque, int ret)
s->status = READY_STAT | SEEK_STAT;
ide_set_irq(s->bus);
eot:
bm->status &= ~BM_STATUS_DMAING;
bm->status |= BM_STATUS_INT;
bm->dma_cb = NULL;
bm->unit = -1;
bm->aiocb = NULL;
ide_dma_set_inactive(bm);
return;
}
@ -1061,11 +1065,8 @@ static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
ide_set_irq(s->bus);
eot:
bm->status &= ~BM_STATUS_DMAING;
bm->status |= BM_STATUS_INT;
bm->dma_cb = NULL;
bm->unit = -1;
bm->aiocb = NULL;
ide_dma_set_inactive(bm);
return;
}
@ -2954,12 +2955,10 @@ void ide_dma_cancel(BMDMAState *bm)
printf("aio_cancel\n");
#endif
bdrv_aio_cancel(bm->aiocb);
bm->aiocb = NULL;
}
bm->status &= ~BM_STATUS_DMAING;
/* cancel DMA request */
bm->unit = -1;
bm->dma_cb = NULL;
ide_dma_set_inactive(bm);
}
}

2
hw/ide/internal.h
View File

@ -8,6 +8,7 @@
*/
#include <hw/ide.h>
#include "block_int.h"
#include "iorange.h"
/* debug IDE devices */
//#define DEBUG_IDE
@ -496,6 +497,7 @@ struct BMDMAState {
QEMUIOVector qiov;
int64_t sector_num;
uint32_t nsector;
IORange addr_ioport;
QEMUBH *bh;
};

137
hw/ide/pci.c
View File

@ -39,106 +39,75 @@ void bmdma_cmd_writeb(void *opaque, uint32_t addr, uint32_t val)
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
#endif
if (!(val & BM_CMD_START)) {
/*
* We can't cancel Scatter Gather DMA in the middle of the
* operation or a partial (not full) DMA transfer would reach
* the storage so we wait for completion instead (we beahve
* like if the DMA was completed by the time the guest trying
* to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
* set).
*
* In the future we'll be able to safely cancel the I/O if the
* whole DMA operation will be submitted to disk with a single
* aio operation with preadv/pwritev.
*/
if (bm->aiocb) {
qemu_aio_flush();
/* Ignore writes to SSBM if it keeps the old value */
if ((val & BM_CMD_START) != (bm->cmd & BM_CMD_START)) {
if (!(val & BM_CMD_START)) {
/*
* We can't cancel Scatter Gather DMA in the middle of the
* operation or a partial (not full) DMA transfer would reach
* the storage so we wait for completion instead (we beahve
* like if the DMA was completed by the time the guest trying
* to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
* set).
*
* In the future we'll be able to safely cancel the I/O if the
* whole DMA operation will be submitted to disk with a single
* aio operation with preadv/pwritev.
*/
if (bm->aiocb) {
qemu_aio_flush();
#ifdef DEBUG_IDE
if (bm->aiocb)
printf("ide_dma_cancel: aiocb still pending");
if (bm->status & BM_STATUS_DMAING)
printf("ide_dma_cancel: BM_STATUS_DMAING still pending");
if (bm->aiocb)
printf("ide_dma_cancel: aiocb still pending");
if (bm->status & BM_STATUS_DMAING)
printf("ide_dma_cancel: BM_STATUS_DMAING still pending");
#endif
}
} else {
bm->cur_addr = bm->addr;
if (!(bm->status & BM_STATUS_DMAING)) {
bm->status |= BM_STATUS_DMAING;
/* start dma transfer if possible */
if (bm->dma_cb)
bm->dma_cb(bm, 0);
}
}
bm->cmd = val & 0x09;
} else {
if (!(bm->status & BM_STATUS_DMAING)) {
bm->status |= BM_STATUS_DMAING;
/* start dma transfer if possible */
if (bm->dma_cb)
bm->dma_cb(bm, 0);
}
bm->cmd = val & 0x09;
}
bm->cmd = val & 0x09;
}
uint32_t bmdma_addr_readb(void *opaque, uint32_t addr)
static void bmdma_addr_read(IORange *ioport, uint64_t addr,
unsigned width, uint64_t *data)
{
BMDMAState *bm = opaque;
uint32_t val;
val = (bm->addr >> ((addr & 3) * 8)) & 0xff;
BMDMAState *bm = container_of(ioport, BMDMAState, addr_ioport);
uint32_t mask = (1ULL << (width * 8)) - 1;
*data = (bm->addr >> (addr * 8)) & mask;
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
printf("%s: 0x%08x\n", __func__, (unsigned)*data);
#endif
return val;
}
void bmdma_addr_writeb(void *opaque, uint32_t addr, uint32_t val)
static void bmdma_addr_write(IORange *ioport, uint64_t addr,
unsigned width, uint64_t data)
{
BMDMAState *bm = opaque;
int shift = (addr & 3) * 8;
BMDMAState *bm = container_of(ioport, BMDMAState, addr_ioport);
int shift = addr * 8;
uint32_t mask = (1ULL << (width * 8)) - 1;
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
printf("%s: 0x%08x\n", __func__, (unsigned)data);
#endif
bm->addr &= ~(0xFF << shift);
bm->addr |= ((val & 0xFF) << shift) & ~3;
bm->cur_addr = bm->addr;
bm->addr &= ~(mask << shift);
bm->addr |= ((data & mask) << shift) & ~3;
}
uint32_t bmdma_addr_readw(void *opaque, uint32_t addr)
{
BMDMAState *bm = opaque;
uint32_t val;
val = (bm->addr >> ((addr & 3) * 8)) & 0xffff;
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
#endif
return val;
}
void bmdma_addr_writew(void *opaque, uint32_t addr, uint32_t val)
{
BMDMAState *bm = opaque;
int shift = (addr & 3) * 8;
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
#endif
bm->addr &= ~(0xFFFF << shift);
bm->addr |= ((val & 0xFFFF) << shift) & ~3;
bm->cur_addr = bm->addr;
}
uint32_t bmdma_addr_readl(void *opaque, uint32_t addr)
{
BMDMAState *bm = opaque;
uint32_t val;
val = bm->addr;
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
#endif
return val;
}
void bmdma_addr_writel(void *opaque, uint32_t addr, uint32_t val)
{
BMDMAState *bm = opaque;
#ifdef DEBUG_IDE
printf("%s: 0x%08x\n", __func__, val);
#endif
bm->addr = val & ~3;
bm->cur_addr = bm->addr;
}
const IORangeOps bmdma_addr_ioport_ops = {
.read = bmdma_addr_read,
.write = bmdma_addr_write,
};
static bool ide_bmdma_current_needed(void *opaque)
{

7
hw/ide/pci.h
View File

@ -11,12 +11,7 @@ typedef struct PCIIDEState {
} PCIIDEState;
void bmdma_cmd_writeb(void *opaque, uint32_t addr, uint32_t val);
uint32_t bmdma_addr_readb(void *opaque, uint32_t addr);
void bmdma_addr_writeb(void *opaque, uint32_t addr, uint32_t val);
uint32_t bmdma_addr_readw(void *opaque, uint32_t addr);
void bmdma_addr_writew(void *opaque, uint32_t addr, uint32_t val);
uint32_t bmdma_addr_readl(void *opaque, uint32_t addr);
void bmdma_addr_writel(void *opaque, uint32_t addr, uint32_t val);
extern const IORangeOps bmdma_addr_ioport_ops;
void pci_ide_create_devs(PCIDevice *dev, DriveInfo **hd_table);
extern const VMStateDescription vmstate_ide_pci;

8
hw/ide/piix.c
View File

@ -85,12 +85,8 @@ static void bmdma_map(PCIDevice *pci_dev, int region_num,
register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);
register_ioport_read(addr, 4, 1, bmdma_readb, bm);
register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
iorange_init(&bm->addr_ioport, &bmdma_addr_ioport_ops, addr + 4, 4);
ioport_register(&bm->addr_ioport);
addr += 8;
}
}

8
hw/ide/via.c
View File

@ -87,12 +87,8 @@ static void bmdma_map(PCIDevice *pci_dev, int region_num,
register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);
register_ioport_read(addr, 4, 1, bmdma_readb, bm);
register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
iorange_init(&bm->addr_ioport, &bmdma_addr_ioport_ops, addr + 4, 4);
ioport_register(&bm->addr_ioport);
addr += 8;
}
}

12
hw/scsi-bus.c
View File

@ -108,7 +108,7 @@ int scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
int res = 0, unit;
loc_push_none(&loc);
for (unit = 0; unit < MAX_SCSI_DEVS; unit++) {
for (unit = 0; unit < bus->ndev; unit++) {
dinfo = drive_get(IF_SCSI, bus->busnr, unit);
if (dinfo == NULL) {
continue;
@ -123,16 +123,6 @@ int scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
return res;
}
void scsi_dev_clear_sense(SCSIDevice *dev)
{
memset(&dev->sense, 0, sizeof(dev->sense));
}
void scsi_dev_set_sense(SCSIDevice *dev, uint8_t key)
{
dev->sense.key = key;
}
SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun)
{
SCSIRequest *req;

20
hw/scsi-defs.h
View File

@ -111,18 +111,20 @@
#define BLANK 0xa1
/*
* Status codes
* SAM Status codes
*/
#define GOOD 0x00
#define CHECK_CONDITION 0x01
#define CONDITION_GOOD 0x02
#define BUSY 0x04
#define INTERMEDIATE_GOOD 0x08
#define INTERMEDIATE_C_GOOD 0x0a
#define RESERVATION_CONFLICT 0x0c
#define COMMAND_TERMINATED 0x11
#define QUEUE_FULL 0x14
#define CHECK_CONDITION 0x02
#define CONDITION_GOOD 0x04
#define BUSY 0x08
#define INTERMEDIATE_GOOD 0x10
#define INTERMEDIATE_C_GOOD 0x14
#define RESERVATION_CONFLICT 0x18
#define COMMAND_TERMINATED 0x22
#define TASK_SET_FULL 0x28
#define ACA_ACTIVE 0x30
#define TASK_ABORTED 0x40
#define STATUS_MASK 0x3e

137
hw/scsi-disk.c
View File

@ -49,6 +49,10 @@ do { fprintf(stderr, "scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
typedef struct SCSIDiskState SCSIDiskState;
typedef struct SCSISense {
uint8_t key;
} SCSISense;
typedef struct SCSIDiskReq {
SCSIRequest req;
/* ??? We should probably keep track of whether the data transfer is
@ -72,6 +76,7 @@ struct SCSIDiskState
QEMUBH *bh;
char *version;
char *serial;
SCSISense sense;
};
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type);
@ -100,10 +105,22 @@ static SCSIDiskReq *scsi_find_request(SCSIDiskState *s, uint32_t tag)
return DO_UPCAST(SCSIDiskReq, req, scsi_req_find(&s->qdev, tag));
}
static void scsi_req_set_status(SCSIRequest *req, int status, int sense_code)
static void scsi_disk_clear_sense(SCSIDiskState *s)
{
req->status = status;
scsi_dev_set_sense(req->dev, sense_code);
memset(&s->sense, 0, sizeof(s->sense));
}
static void scsi_disk_set_sense(SCSIDiskState *s, uint8_t key)
{
s->sense.key = key;
}
static void scsi_req_set_status(SCSIDiskReq *r, int status, int sense_code)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
r->req.status = status;
scsi_disk_set_sense(s, sense_code);
}
/* Helper function for command completion. */
@ -111,7 +128,7 @@ static void scsi_command_complete(SCSIDiskReq *r, int status, int sense)
{
DPRINTF("Command complete tag=0x%x status=%d sense=%d\n",
r->req.tag, status, sense);
scsi_req_set_status(&r->req, status, sense);
scsi_req_set_status(r, status, sense);
scsi_req_complete(&r->req);
scsi_remove_request(r);
}
@ -170,6 +187,9 @@ static void scsi_read_request(SCSIDiskReq *r)
return;
}
/* No data transfer may already be in progress */
assert(r->req.aiocb == NULL);
n = r->sector_count;
if (n > SCSI_DMA_BUF_SIZE / 512)
n = SCSI_DMA_BUF_SIZE / 512;
@ -197,9 +217,6 @@ static void scsi_read_data(SCSIDevice *d, uint32_t tag)
return;
}
/* No data transfer may already be in progress */
assert(r->req.aiocb == NULL);
scsi_read_request(r);
}
@ -269,6 +286,9 @@ static void scsi_write_request(SCSIDiskReq *r)
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);
n = r->iov.iov_len / 512;
if (n) {
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
@ -298,9 +318,6 @@ static int scsi_write_data(SCSIDevice *d, uint32_t tag)
return 1;
}
/* No data transfer may already be in progress */
assert(r->req.aiocb == NULL);
scsi_write_request(r);
return 0;
@ -398,15 +415,20 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
switch (page_code) {
case 0x00: /* Supported page codes, mandatory */
{
int pages;
DPRINTF("Inquiry EVPD[Supported pages] "
"buffer size %zd\n", req->cmd.xfer);
outbuf[buflen++] = 4; // number of pages
pages = buflen++;
outbuf[buflen++] = 0x00; // list of supported pages (this page)
outbuf[buflen++] = 0x80; // unit serial number
outbuf[buflen++] = 0x83; // device identification
outbuf[buflen++] = 0xb0; // block device characteristics
if (bdrv_get_type_hint(s->bs) != BDRV_TYPE_CDROM) {
outbuf[buflen++] = 0xb0; // block device characteristics
}
outbuf[pages] = buflen - pages - 1; // number of pages
break;
}
case 0x80: /* Device serial number, optional */
{
int l = strlen(s->serial);
@ -434,7 +456,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
DPRINTF("Inquiry EVPD[Device identification] "
"buffer size %zd\n", req->cmd.xfer);
outbuf[buflen++] = 3 + id_len;
outbuf[buflen++] = 4 + id_len;
outbuf[buflen++] = 0x2; // ASCII
outbuf[buflen++] = 0; // not officially assigned
outbuf[buflen++] = 0; // reserved
@ -451,6 +473,11 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
unsigned int opt_io_size =
s->qdev.conf.opt_io_size / s->qdev.blocksize;
if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
page_code);
return -1;
}
/* required VPD size with unmap support */
outbuf[3] = buflen = 0x3c;
@ -812,7 +839,7 @@ static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *outbuf)
goto illegal_request;
memset(outbuf, 0, 4);
buflen = 4;
if (req->dev->sense.key == NOT_READY && req->cmd.xfer >= 18) {
if (s->sense.key == NOT_READY && req->cmd.xfer >= 18) {
memset(outbuf, 0, 18);
buflen = 18;
outbuf[7] = 10;
@ -822,8 +849,8 @@ static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *outbuf)
}
outbuf[0] = 0xf0;
outbuf[1] = 0;
outbuf[2] = req->dev->sense.key;
scsi_dev_clear_sense(req->dev);
outbuf[2] = s->sense.key;
scsi_disk_clear_sense(s);
break;
case INQUIRY:
buflen = scsi_disk_emulate_inquiry(req, outbuf);
@ -956,7 +983,7 @@ static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *outbuf)
default:
goto illegal_request;
}
scsi_req_set_status(req, GOOD, NO_SENSE);
scsi_req_set_status(r, GOOD, NO_SENSE);
return buflen;
not_ready:
@ -977,9 +1004,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
uint8_t *buf, int lun)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
uint64_t lba;
uint32_t len;
int cmdlen;
int is_write;
uint8_t command;
uint8_t *outbuf;
@ -998,55 +1023,21 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
outbuf = (uint8_t *)r->iov.iov_base;
is_write = 0;
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]);
switch (command >> 5) {
case 0:
lba = (uint64_t) buf[3] | ((uint64_t) buf[2] << 8) |
(((uint64_t) buf[1] & 0x1f) << 16);
len = buf[4];
cmdlen = 6;
break;
case 1:
case 2:
lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) |
((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24);
len = buf[8] | (buf[7] << 8);
cmdlen = 10;
break;
case 4:
lba = (uint64_t) buf[9] | ((uint64_t) buf[8] << 8) |
((uint64_t) buf[7] << 16) | ((uint64_t) buf[6] << 24) |
((uint64_t) buf[5] << 32) | ((uint64_t) buf[4] << 40) |
((uint64_t) buf[3] << 48) | ((uint64_t) buf[2] << 56);
len = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24);
cmdlen = 16;
break;
case 5:
lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) |
((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24);
len = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24);
cmdlen = 12;
break;
default:
if (scsi_req_parse(&r->req, buf) != 0) {
BADF("Unsupported command length, command %x\n", command);
goto fail;
}
#ifdef DEBUG_SCSI
{
int i;
for (i = 1; i < cmdlen; i++) {
for (i = 1; i < r->req.cmd.len; i++) {
printf(" 0x%02x", buf[i]);
}
printf("\n");
}
#endif
if (scsi_req_parse(&r->req, buf) != 0) {
BADF("Unsupported command length, command %x\n", command);
goto fail;
}
assert(r->req.cmd.len == cmdlen);
assert(r->req.cmd.lba == lba);
if (lun || buf[1] >> 5) {
/* Only LUN 0 supported. */
DPRINTF("Unimplemented LUN %d\n", lun ? lun : buf[1] >> 5);
@ -1084,10 +1075,11 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
case READ_10:
case READ_12:
case READ_16:
DPRINTF("Read (sector %" PRId64 ", count %d)\n", lba, len);
if (lba > s->max_lba)
len = r->req.cmd.xfer / d->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 = lba * s->cluster_size;
r->sector = r->req.cmd.lba * s->cluster_size;
r->sector_count = len * s->cluster_size;
break;
case WRITE_6:
@ -1097,42 +1089,45 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
case WRITE_VERIFY:
case WRITE_VERIFY_12:
case WRITE_VERIFY_16:
len = r->req.cmd.xfer / d->blocksize;
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n",
(command & 0xe) == 0xe ? "And Verify " : "", lba, len);
if (lba > s->max_lba)
(command & 0xe) == 0xe ? "And Verify " : "",
r->req.cmd.lba, len);
if (r->req.cmd.lba > s->max_lba)
goto illegal_lba;
r->sector = lba * s->cluster_size;
r->sector = r->req.cmd.lba * s->cluster_size;
r->sector_count = len * s->cluster_size;
is_write = 1;
break;
case MODE_SELECT:
DPRINTF("Mode Select(6) (len %d)\n", len);
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 (len > 12) {
if (r->req.cmd.xfer > 12) {
goto fail;
}
break;
case MODE_SELECT_10:
DPRINTF("Mode Select(10) (len %d)\n", len);
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 (len > 16) {
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, lba);
if (lba > s->max_lba) {
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;
default:
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
fail:
scsi_command_complete(r, CHECK_CONDITION, ILLEGAL_REQUEST);
return 0;
return 0;
illegal_lba:
scsi_command_complete(r, CHECK_CONDITION, HARDWARE_ERROR);
return 0;

10
hw/scsi-generic.c
View File

@ -96,17 +96,17 @@ static void scsi_command_complete(void *opaque, int ret)
s->senselen = r->io_header.sb_len_wr;
if (ret != 0)
r->req.status = BUSY << 1;
r->req.status = BUSY;
else {
if (s->driver_status & SG_ERR_DRIVER_TIMEOUT) {
r->req.status = BUSY << 1;
r->req.status = BUSY;
BADF("Driver Timeout\n");
} else if (r->io_header.status)
r->req.status = r->io_header.status;
else if (s->driver_status & SG_ERR_DRIVER_SENSE)
r->req.status = CHECK_CONDITION << 1;
r->req.status = CHECK_CONDITION;
else
r->req.status = GOOD << 1;
r->req.status = GOOD;
}
DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
r, r->req.tag, r->req.status);
@ -333,7 +333,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
s->senselen = 7;
s->driver_status = SG_ERR_DRIVER_SENSE;
bus = scsi_bus_from_device(d);
bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION << 1);
bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION);
return 0;
}

11
hw/scsi.h
View File

@ -3,6 +3,7 @@
#include "qdev.h"
#include "block.h"
#include "blockdev.h"
#include "block_int.h"
#define SCSI_CMD_BUF_SIZE 16
@ -25,10 +26,6 @@ enum SCSIXferMode {
SCSI_XFER_TO_DEV, /* WRITE, MODE_SELECT, ... */
};
typedef struct SCSISense {
uint8_t key;
} SCSISense;
typedef struct SCSIRequest {
SCSIBus *bus;
SCSIDevice *dev;
@ -56,7 +53,6 @@ struct SCSIDevice
QTAILQ_HEAD(, SCSIRequest) requests;
int blocksize;
int type;
struct SCSISense sense;
};
/* cdrom.c */
@ -86,7 +82,7 @@ struct SCSIBus {
int tcq, ndev;
scsi_completionfn complete;
SCSIDevice *devs[8];
SCSIDevice *devs[MAX_SCSI_DEVS];
};
void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,
@ -101,9 +97,6 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, int unit);
int scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
void scsi_dev_clear_sense(SCSIDevice *dev);
void scsi_dev_set_sense(SCSIDevice *dev, uint8_t key);
SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);
SCSIRequest *scsi_req_find(SCSIDevice *d, uint32_t tag);
void scsi_req_free(SCSIRequest *req);

12
hw/xen_disk.c
View File

@ -181,6 +181,10 @@ static int ioreq_parse(struct ioreq *ioreq)
ioreq->prot = PROT_WRITE; /* to memory */
break;
case BLKIF_OP_WRITE_BARRIER:
if (!ioreq->req.nr_segments) {
ioreq->presync = 1;
return 0;
}
if (!syncwrite)
ioreq->presync = ioreq->postsync = 1;
/* fall through */
@ -305,7 +309,7 @@ static int ioreq_runio_qemu_sync(struct ioreq *ioreq)
int i, rc, len = 0;
off_t pos;
if (ioreq_map(ioreq) == -1)
if (ioreq->req.nr_segments && ioreq_map(ioreq) == -1)
goto err;
if (ioreq->presync)
bdrv_flush(blkdev->bs);
@ -329,6 +333,8 @@ static int ioreq_runio_qemu_sync(struct ioreq *ioreq)
break;
case BLKIF_OP_WRITE:
case BLKIF_OP_WRITE_BARRIER:
if (!ioreq->req.nr_segments)
break;
pos = ioreq->start;
for (i = 0; i < ioreq->v.niov; i++) {
rc = bdrv_write(blkdev->bs, pos / BLOCK_SIZE,
@ -386,7 +392,7 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
{
struct XenBlkDev *blkdev = ioreq->blkdev;
if (ioreq_map(ioreq) == -1)
if (ioreq->req.nr_segments && ioreq_map(ioreq) == -1)
goto err;
ioreq->aio_inflight++;
@ -403,6 +409,8 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
case BLKIF_OP_WRITE:
case BLKIF_OP_WRITE_BARRIER:
ioreq->aio_inflight++;
if (!ioreq->req.nr_segments)
break;
bdrv_aio_writev(blkdev->bs, ioreq->start / BLOCK_SIZE,
&ioreq->v, ioreq->v.size / BLOCK_SIZE,
qemu_aio_complete, ioreq);