diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/scsi/scsi-generic.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c index ada24d7486..3d35d307e1 100644 --- a/hw/scsi/scsi-generic.c +++ b/hw/scsi/scsi-generic.c @@ -147,6 +147,18 @@ static int execute_command(BlockBackend *blk, return 0; } +static uint64_t calculate_max_transfer(SCSIDevice *s) +{ + uint64_t max_transfer = blk_get_max_hw_transfer(s->conf.blk); + uint32_t max_iov = blk_get_max_hw_iov(s->conf.blk); + + assert(max_transfer); + max_transfer = MIN_NON_ZERO(max_transfer, + max_iov * qemu_real_host_page_size()); + + return max_transfer / s->blocksize; +} + static int scsi_handle_inquiry_reply(SCSIGenericReq *r, SCSIDevice *s, int len) { uint8_t page, page_idx; @@ -179,12 +191,7 @@ static int scsi_handle_inquiry_reply(SCSIGenericReq *r, SCSIDevice *s, int len) (r->req.cmd.buf[1] & 0x01)) { page = r->req.cmd.buf[2]; if (page == 0xb0) { - uint64_t max_transfer = blk_get_max_hw_transfer(s->conf.blk); - uint32_t max_iov = blk_get_max_hw_iov(s->conf.blk); - - assert(max_transfer); - max_transfer = MIN_NON_ZERO(max_transfer, max_iov * qemu_real_host_page_size()) - / s->blocksize; + uint64_t max_transfer = calculate_max_transfer(s); stl_be_p(&r->buf[8], max_transfer); /* Also take care of the opt xfer len. */ stl_be_p(&r->buf[12], @@ -230,7 +237,7 @@ static int scsi_generic_emulate_block_limits(SCSIGenericReq *r, SCSIDevice *s) uint8_t buf[64]; SCSIBlockLimits bl = { - .max_io_sectors = blk_get_max_transfer(s->conf.blk) / s->blocksize + .max_io_sectors = calculate_max_transfer(s), }; memset(r->buf, 0, r->buflen); |