Revision bb729f75 hw/scsi-bus.c
| b/hw/scsi-bus.c | ||
|---|---|---|
| 801 | 801 |
return xfer * unit; |
| 802 | 802 |
} |
| 803 | 803 |
|
| 804 |
static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
|
| 804 |
uint32_t scsi_data_cdb_length(uint8_t *buf) |
|
| 805 |
{
|
|
| 806 |
if ((buf[0] >> 5) == 0 && buf[4] == 0) {
|
|
| 807 |
return 256; |
|
| 808 |
} else {
|
|
| 809 |
return scsi_cdb_length(buf); |
|
| 810 |
} |
|
| 811 |
} |
|
| 812 |
|
|
| 813 |
uint32_t scsi_cdb_length(uint8_t *buf) |
|
| 805 | 814 |
{
|
| 806 | 815 |
switch (buf[0] >> 5) {
|
| 807 | 816 |
case 0: |
| 808 |
cmd->xfer = buf[4];
|
|
| 817 |
return buf[4];
|
|
| 809 | 818 |
break; |
| 810 | 819 |
case 1: |
| 811 | 820 |
case 2: |
| 812 |
cmd->xfer = lduw_be_p(&buf[7]);
|
|
| 821 |
return lduw_be_p(&buf[7]);
|
|
| 813 | 822 |
break; |
| 814 | 823 |
case 4: |
| 815 |
cmd->xfer = ldl_be_p(&buf[10]) & 0xffffffffULL;
|
|
| 824 |
return ldl_be_p(&buf[10]) & 0xffffffffULL;
|
|
| 816 | 825 |
break; |
| 817 | 826 |
case 5: |
| 818 |
cmd->xfer = ldl_be_p(&buf[6]) & 0xffffffffULL;
|
|
| 827 |
return ldl_be_p(&buf[6]) & 0xffffffffULL;
|
|
| 819 | 828 |
break; |
| 820 | 829 |
default: |
| 821 | 830 |
return -1; |
| 822 | 831 |
} |
| 832 |
} |
|
| 823 | 833 |
|
| 834 |
static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
|
| 835 |
{
|
|
| 836 |
cmd->xfer = scsi_cdb_length(buf); |
|
| 824 | 837 |
switch (buf[0]) {
|
| 825 | 838 |
case TEST_UNIT_READY: |
| 826 | 839 |
case REWIND: |
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