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sys/dev/virtio/scsi/virtio_scsi.c
| Show First 20 Lines • Show All 444 Lines • ▼ Show 20 Lines | |||||
| static int | static int | ||||
| vtscsi_maximum_segments(struct vtscsi_softc *sc, int seg_max) | vtscsi_maximum_segments(struct vtscsi_softc *sc, int seg_max) | ||||
| { | { | ||||
| int nsegs; | int nsegs; | ||||
| nsegs = VTSCSI_MIN_SEGMENTS; | nsegs = VTSCSI_MIN_SEGMENTS; | ||||
| if (seg_max > 0) { | if (seg_max > 0) { | ||||
| nsegs += MIN(seg_max, MAXPHYS / PAGE_SIZE + 1); | nsegs += MIN(seg_max, maxphys / PAGE_SIZE + 1); | ||||
| if (sc->vtscsi_flags & VTSCSI_FLAG_INDIRECT) | if (sc->vtscsi_flags & VTSCSI_FLAG_INDIRECT) | ||||
| nsegs = MIN(nsegs, VIRTIO_MAX_INDIRECT); | nsegs = MIN(nsegs, VIRTIO_MAX_INDIRECT); | ||||
| } else | } else | ||||
| nsegs += 1; | nsegs += 1; | ||||
| return (nsegs); | return (nsegs); | ||||
| } | } | ||||
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