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| author | Wei Hu <whu@FreeBSD.org> | 2022-08-15 06:56:01 +0000 |
|---|---|---|
| committer | Wei Hu <whu@FreeBSD.org> | 2022-08-15 07:05:43 +0000 |
| commit | 795a9974144ec26f93a9081f72e09a2814ac3e4c (patch) | |
| tree | 81eac7d9576bbf6a1a8b325e8e2223fd9a4debe2 /sys/dev/hyperv | |
| parent | 036f1bc6139e8fc6d3aca61a5ab93ffc5715cf74 (diff) | |
| download | src-795a9974144ec26f93a9081f72e09a2814ac3e4c.tar.gz src-795a9974144ec26f93a9081f72e09a2814ac3e4c.zip | |
Hyper-V: storvsc: Call bus_dmamap_sync() for dma operations
Call bus_dmamap_sync() for related dma operations. This is required
on ARM64 architecture.
Tested by: Souradeep Chakrabarti <schakrabarti@microsoft.com>
MFC after: 2 weeks
Sponsored by: Microsoft
Diffstat (limited to 'sys/dev/hyperv')
| -rw-r--r-- | sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c b/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c index 2e2ecf3dd228..4c9869887db6 100644 --- a/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c +++ b/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c @@ -1853,6 +1853,18 @@ storvsc_xferbuf_prepare(void *arg, bus_dma_segment_t *segs, int nsegs, int error prplist->gpa_page[i] = atop(segs[i].ds_addr); } reqp->prp_cnt = nsegs; + + if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + bus_dmasync_op_t op; + + if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) + op = BUS_DMASYNC_PREREAD; + else + op = BUS_DMASYNC_PREWRITE; + + bus_dmamap_sync(reqp->softc->storvsc_req_dtag, + reqp->data_dmap, op); + } } /** @@ -2113,6 +2125,19 @@ storvsc_io_done(struct hv_storvsc_request *reqp) int ori_sg_count = 0; const struct scsi_generic *cmd; + if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + bus_dmasync_op_t op; + + if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) + op = BUS_DMASYNC_POSTREAD; + else + op = BUS_DMASYNC_POSTWRITE; + + bus_dmamap_sync(reqp->softc->storvsc_req_dtag, + reqp->data_dmap, op); + bus_dmamap_unload(sc->storvsc_req_dtag, reqp->data_dmap); + } + /* destroy bounce buffer if it is used */ if (reqp->bounce_sgl_count) { ori_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; |