//#define DEBUG_SCSI
#ifdef DEBUG_SCSI
-#define DPRINTF(fmt, args...) \
-do { printf("scsi-generic: " fmt , ##args); } while (0)
+#define DPRINTF(fmt, ...) \
+do { printf("scsi-generic: " fmt , ## __VA_ARGS__); } while (0)
#else
-#define DPRINTF(fmt, args...) do {} while(0)
+#define DPRINTF(fmt, ...) do {} while(0)
#endif
-#define BADF(fmt, args...) \
-do { fprintf(stderr, "scsi-generic: " fmt , ##args); } while (0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "scsi-generic: " fmt , ## __VA_ARGS__); } while (0)
#include <stdio.h>
#include <sys/types.h>
#include <scsi/sg.h>
#include <scsi/scsi.h>
+#define REWIND 0x01
+#define REPORT_DENSITY_SUPPORT 0x44
#define LOAD_UNLOAD 0xa6
#define SET_CD_SPEED 0xbb
#define BLANK 0xa1
#define SCSI_CMD_BUF_SIZE 16
-#define SCSI_SENSE_BUF_SIZE 32
+#define SCSI_SENSE_BUF_SIZE 96
#define SG_ERR_DRIVER_TIMEOUT 0x06
#define SG_ERR_DRIVER_SENSE 0x08
{
SCSIRequest *requests;
BlockDriverState *bdrv;
+ int type;
int blocksize;
int lun;
scsi_completionfn completion;
void *opaque;
int driver_status;
uint8_t sensebuf[SCSI_SENSE_BUF_SIZE];
+ uint8_t senselen;
};
/* Global pool of SCSIRequest structures. */
SCSIRequest *r = (SCSIRequest *)opaque;
SCSIDeviceState *s = r->dev;
uint32_t tag;
- int sense;
+ int status;
s->driver_status = r->io_header.driver_status;
+ if (s->driver_status & SG_ERR_DRIVER_SENSE)
+ s->senselen = r->io_header.sb_len_wr;
+
if (ret != 0)
- sense = HARDWARE_ERROR;
+ status = BUSY << 1;
else {
if (s->driver_status & SG_ERR_DRIVER_TIMEOUT) {
- sense = HARDWARE_ERROR;
+ status = BUSY << 1;
BADF("Driver Timeout\n");
- } else if ((s->driver_status & SG_ERR_DRIVER_SENSE) == 0)
- sense = NO_SENSE;
+ } else if (r->io_header.status)
+ status = r->io_header.status;
+ else if (s->driver_status & SG_ERR_DRIVER_SENSE)
+ status = CHECK_CONDITION << 1;
else
- sense = s->sensebuf[2] & 0x0f;
+ status = GOOD << 1;
}
-
- DPRINTF("Command complete 0x%p tag=0x%x sense=%d\n", r, r->tag, sense);
+ DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
+ r, r->tag, status);
tag = r->tag;
scsi_remove_request(r);
- s->completion(s->opaque, SCSI_REASON_DONE, tag, sense);
+ s->completion(s->opaque, SCSI_REASON_DONE, tag, status);
}
/* Cancel a pending data transfer. */
SCSIRequest *r, int direction,
BlockDriverCompletionFunc *complete)
{
-
r->io_header.interface_id = 'S';
r->io_header.dxfer_direction = direction;
r->io_header.dxferp = r->buf;
r->io_header.usr_ptr = r;
r->io_header.flags |= SG_FLAG_DIRECT_IO;
- if (bdrv_pwrite(bdrv, -1, &r->io_header, sizeof(r->io_header)) == -1) {
- BADF("execute_command: write failed ! (%d)\n", errno);
- return -1;
- }
- if (complete == NULL) {
- int ret;
- r->aiocb = NULL;
- while ((ret = bdrv_pread(bdrv, -1, &r->io_header,
- sizeof(r->io_header))) == -1 &&
- errno == EINTR);
- if (ret == -1) {
- BADF("execute_command: read failed !\n");
- return -1;
- }
- return 0;
- }
-
- r->aiocb = bdrv_aio_read(bdrv, 0, (uint8_t*)&r->io_header,
- -(int64_t)sizeof(r->io_header), complete, r);
+ r->aiocb = bdrv_aio_ioctl(bdrv, SG_IO, &r->io_header, complete, r);
if (r->aiocb == NULL) {
BADF("execute_command: read failed !\n");
return -1;
r->len = -1;
s->completion(s->opaque, SCSI_REASON_DATA, r->tag, len);
+ if (len == 0)
+ scsi_command_complete(r, 0);
}
/* Read more data from scsi device into buffer. */
if (r->cmd[0] == REQUEST_SENSE && s->driver_status & SG_ERR_DRIVER_SENSE)
{
- memcpy(r->buf, s->sensebuf, 16);
+ s->senselen = MIN(r->len, s->senselen);
+ memcpy(r->buf, s->sensebuf, s->senselen);
r->io_header.driver_status = 0;
+ r->io_header.status = 0;
+ r->io_header.dxfer_len = s->senselen;
r->len = -1;
- s->completion(s->opaque, SCSI_REASON_DATA, r->tag, 16);
+ DPRINTF("Data ready tag=0x%x len=%d\n", r->tag, s->senselen);
+ DPRINTF("Sense: %d %d %d %d %d %d %d %d\n",
+ r->buf[0], r->buf[1], r->buf[2], r->buf[3],
+ r->buf[4], r->buf[5], r->buf[6], r->buf[7]);
+ s->completion(s->opaque, SCSI_REASON_DATA, r->tag, s->senselen);
return;
}
return;
}
+ if (r->cmd[0] == MODE_SELECT && r->cmd[4] == 12 &&
+ r->dev->type == TYPE_TAPE) {
+ r->dev->blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11];
+ DPRINTF("block size %d\n", r->dev->blocksize);
+ }
+
scsi_command_complete(r, ret);
}
case 0:
*len = cmd[4];
*cmdlen = 6;
+ /* length 0 means 256 blocks */
+ if (*len == 0)
+ *len = 256;
break;
case 1:
case 2:
case READ_12:
*len *= blocksize;
break;
+ case INQUIRY:
+ *len = cmd[4] | (cmd[3] << 8);
+ break;
+ }
+ return 0;
+}
+
+static int scsi_stream_length(uint8_t *cmd, int blocksize, int *cmdlen, uint32_t *len)
+{
+ switch(cmd[0]) {
+ /* stream commands */
+ case READ_6:
+ case READ_REVERSE:
+ case RECOVER_BUFFERED_DATA:
+ case WRITE_6:
+ *cmdlen = 6;
+ *len = cmd[4] | (cmd[3] << 8) | (cmd[2] << 16);
+ if (cmd[1] & 0x01) /* fixed */
+ *len *= blocksize;
+ break;
+ case REWIND:
+ case START_STOP:
+ *cmdlen = 6;
+ *len = 0;
+ cmd[1] = 0x01; /* force IMMED, otherwise qemu waits end of command */
+ break;
+ /* generic commands */
+ default:
+ return scsi_length(cmd, blocksize, cmdlen, len);
}
return 0;
}
SCSIRequest *r;
int ret;
- /* ??? Tags are not unique for different luns. We only implement a
- single lun, so this should not matter. */
+ if (s->type == TYPE_TAPE) {
+ if (scsi_stream_length(cmd, s->blocksize, &cmdlen, &len) == -1) {
+ BADF("Unsupported command length, command %x\n", cmd[0]);
+ return 0;
+ }
+ } else {
+ if (scsi_length(cmd, s->blocksize, &cmdlen, &len) == -1) {
+ BADF("Unsupported command length, command %x\n", cmd[0]);
+ return 0;
+ }
+ }
+
+ DPRINTF("Command: lun=%d tag=0x%x data=0x%02x len %d\n", lun, tag,
+ cmd[0], len);
- if (lun != s->lun || (cmd[1] >> 5) != s->lun) {
+ if (cmd[0] != REQUEST_SENSE &&
+ (lun != s->lun || (cmd[1] >> 5) != s->lun)) {
DPRINTF("Unimplemented LUN %d\n", lun ? lun : cmd[1] >> 5);
- s->completion(s->opaque, SCSI_REASON_DONE, tag, ILLEGAL_REQUEST);
- return 0;
- }
- if (scsi_length(cmd, s->blocksize, &cmdlen, &len) == -1) {
- BADF("Unsupported command length, command %x\n", cmd[0]);
+ s->sensebuf[0] = 0x70;
+ s->sensebuf[1] = 0x00;
+ s->sensebuf[2] = ILLEGAL_REQUEST;
+ s->sensebuf[3] = 0x00;
+ s->sensebuf[4] = 0x00;
+ s->sensebuf[5] = 0x00;
+ s->sensebuf[6] = 0x00;
+ s->senselen = 7;
+ s->driver_status = SG_ERR_DRIVER_SENSE;
+ s->completion(s->opaque, SCSI_REASON_DONE, tag, CHECK_CONDITION << 1);
return 0;
}
- DPRINTF("Command: lun=%d tag=0x%x data=0x%02x len %d\n", lun, tag,
- cmd[0], len);
-
r = scsi_find_request(s, tag);
if (r) {
BADF("Tag 0x%x already in use %p\n", tag, r);
sg_io_hdr_t io_header;
int ret;
- memset(cmd, sizeof(cmd), 0);
- memset(buf, sizeof(buf), 0);
+ memset(cmd, 0, sizeof(cmd));
+ memset(buf, 0, sizeof(buf));
cmd[0] = READ_CAPACITY;
memset(&io_header, 0, sizeof(io_header));
io_header.sbp = sensebuf;
io_header.timeout = 6000; /* XXX */
- ret = bdrv_pwrite(bdrv, -1, &io_header, sizeof(io_header));
- if (ret == -1)
+ ret = bdrv_ioctl(bdrv, SG_IO, &io_header);
+ if (ret < 0)
return -1;
- while ((ret = bdrv_pread(bdrv, -1, &io_header, sizeof(io_header))) == -1 &&
- errno == EINTR);
+ return (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
+}
+
+static int get_stream_blocksize(BlockDriverState *bdrv)
+{
+ uint8_t cmd[6];
+ uint8_t buf[12];
+ uint8_t sensebuf[8];
+ sg_io_hdr_t io_header;
+ int ret;
+
+ memset(cmd, 0, sizeof(cmd));
+ memset(buf, 0, sizeof(buf));
+ cmd[0] = MODE_SENSE;
+ cmd[4] = sizeof(buf);
- if (ret == -1)
+ memset(&io_header, 0, sizeof(io_header));
+ io_header.interface_id = 'S';
+ io_header.dxfer_direction = SG_DXFER_FROM_DEV;
+ io_header.dxfer_len = sizeof(buf);
+ io_header.dxferp = buf;
+ io_header.cmdp = cmd;
+ io_header.cmd_len = sizeof(cmd);
+ io_header.mx_sb_len = sizeof(sensebuf);
+ io_header.sbp = sensebuf;
+ io_header.timeout = 6000; /* XXX */
+
+ ret = bdrv_ioctl(bdrv, SG_IO, &io_header);
+ if (ret < 0)
return -1;
- return (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
+ return (buf[9] << 16) | (buf[10] << 8) | buf[11];
}
static void scsi_destroy(SCSIDevice *d)
s->completion = completion;
s->opaque = opaque;
s->lun = scsiid.lun;
- s->blocksize = get_blocksize(s->bdrv);
+ DPRINTF("LUN %d\n", s->lun);
+ s->type = scsiid.scsi_type;
+ DPRINTF("device type %d\n", s->type);
+ if (s->type == TYPE_TAPE) {
+ s->blocksize = get_stream_blocksize(s->bdrv);
+ if (s->blocksize == -1)
+ s->blocksize = 0;
+ } else {
+ s->blocksize = get_blocksize(s->bdrv);
+ /* removable media returns 0 if not present */
+ if (s->blocksize <= 0) {
+ if (s->type == TYPE_ROM || s->type == TYPE_WORM)
+ s->blocksize = 2048;
+ else
+ s->blocksize = 512;
+ }
+ }
+ DPRINTF("block size %d\n", s->blocksize);
s->driver_status = 0;
memset(s->sensebuf, 0, sizeof(s->sensebuf));
- /* removable media returns 0 if not present */
- if (s->blocksize <= 0)
- s->blocksize = 2048;
/* define function to manage device */
projects / qemu / blobdiff