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| author | Paolo Bonzini <pbonzini@redhat.com> | 2011-07-06 11:26:47 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2012-02-22 13:29:08 +0100 |
| commit | 3d5aba97e9b3e92e8788e250de85080d15c7e8f9 (patch) | |
| tree | 9d6e9bd3972f3a101cc22f6c14c38c3f26c9b7fb /hw/scsi.h | |
| parent | 01e95455889780871374e1b72cd6919cfbd23399 (diff) | |
| download | focaccia-qemu-3d5aba97e9b3e92e8788e250de85080d15c7e8f9.tar.gz focaccia-qemu-3d5aba97e9b3e92e8788e250de85080d15c7e8f9.zip | |
scsi: add scatter/gather functionality
Scatter/gather functionality uses the newly added DMA helpers. The device can choose between doing DMA itself, or calling scsi_req_data as usual, which will use the newly added DMA helpers to copy piecewise to/from the destination area(s). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/scsi.h')
| -rw-r--r-- | hw/scsi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/scsi.h b/hw/scsi.h index 8722ef9be4..34cdba8f69 100644 --- a/hw/scsi.h +++ b/hw/scsi.h @@ -49,6 +49,8 @@ struct SCSIRequest { size_t resid; SCSICommand cmd; BlockDriverAIOCB *aiocb; + QEMUSGList *sg; + bool dma_started; uint8_t sense[SCSI_SENSE_BUF_SIZE]; uint32_t sense_len; bool enqueued; @@ -115,6 +117,7 @@ struct SCSIBusInfo { void (*transfer_data)(SCSIRequest *req, uint32_t arg); void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid); void (*cancel)(SCSIRequest *req); + QEMUSGList *(*get_sg_list)(SCSIRequest *req); }; struct SCSIBus { |