diff options
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pv/xbf.c | 84 |
1 files changed, 66 insertions, 18 deletions
diff --git a/sys/dev/pv/xbf.c b/sys/dev/pv/xbf.c index 48626fddc08..be5a7321481 100644 --- a/sys/dev/pv/xbf.c +++ b/sys/dev/pv/xbf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: xbf.c,v 1.13 2016/12/15 03:41:15 jsg Exp $ */ +/* $OpenBSD: xbf.c,v 1.14 2016/12/23 12:52:12 mikeb Exp $ */ /* * Copyright (c) 2016 Mike Belopuhov @@ -146,6 +146,7 @@ struct xbf_softc { int sc_state; #define XBF_CONNECTED 4 +#define XBF_CLOSING 5 int sc_caps; #define XBF_CAP_BARRIER 0x0001 @@ -176,18 +177,19 @@ struct xbf_softc { struct scsi_iopool sc_iopool; struct scsi_adapter sc_switch; struct scsi_link sc_link; - struct scsibus_softc *sc_scsibus; + struct device *sc_scsibus; }; int xbf_match(struct device *, void *, void *); void xbf_attach(struct device *, struct device *, void *); +int xbf_detach(struct device *, int); struct cfdriver xbf_cd = { NULL, "xbf", DV_DULL }; const struct cfattach xbf_ca = { - sizeof(struct xbf_softc), xbf_match, xbf_attach + sizeof(struct xbf_softc), xbf_match, xbf_attach, xbf_detach }; void xbf_intr(void *); @@ -204,7 +206,6 @@ int xbf_submit_cmd(struct scsi_xfer *); int xbf_poll_cmd(struct scsi_xfer *, int, int); void xbf_complete_cmd(struct scsi_xfer *, int); int xbf_dev_probe(struct scsi_link *); -void xbf_dev_free(struct scsi_link *); void xbf_scsi_minphys(struct buf *, struct scsi_link *); void xbf_scsi_inq(struct scsi_xfer *); @@ -221,7 +222,7 @@ int xbf_get_type(struct xbf_softc *); int xbf_init(struct xbf_softc *); int xbf_ring_create(struct xbf_softc *); void xbf_ring_destroy(struct xbf_softc *); -int xbf_capabilities(struct xbf_softc *); +void xbf_stop(struct xbf_softc *); int xbf_match(struct device *parent, void *match, void *aux) @@ -275,7 +276,6 @@ xbf_attach(struct device *parent, struct device *self, void *aux) sc->sc_switch.scsi_cmd = xbf_scsi_cmd; sc->sc_switch.scsi_minphys = xbf_scsi_minphys; sc->sc_switch.dev_probe = xbf_dev_probe; - sc->sc_switch.dev_free = xbf_dev_free; sc->sc_link.adapter = &sc->sc_switch; sc->sc_link.adapter_softc = self; @@ -287,7 +287,7 @@ xbf_attach(struct device *parent, struct device *self, void *aux) bzero(&saa, sizeof(saa)); saa.saa_sc_link = &sc->sc_link; - config_found(self, &saa, scsiprint); + sc->sc_scsibus = config_found(self, &saa, scsiprint); xen_unplug_emulated(parent, XEN_UNPLUG_IDE | XEN_UNPLUG_IDESEC); @@ -297,6 +297,19 @@ xbf_attach(struct device *parent, struct device *self, void *aux) xen_intr_disestablish(sc->sc_xih); } +int +xbf_detach(struct device *self, int flags) +{ + struct xbf_softc *sc = (struct xbf_softc *)self; + + xen_intr_mask(sc->sc_xih); + xen_intr_disestablish(sc->sc_xih); + + xbf_stop(sc); + + return (config_detach(sc->sc_scsibus, flags | DETACH_FORCE)); +} + void xbf_intr(void *xsc) { @@ -326,7 +339,8 @@ xbf_io_get(void *xsc) struct xbf_softc *sc = xsc; void *rv = sc; /* just has to be !NULL */ - if (sc->sc_state != XBF_CONNECTED) + if (sc->sc_state != XBF_CONNECTED && + sc->sc_state != XBF_CLOSING) rv = NULL; return (rv); @@ -358,15 +372,17 @@ xbf_scsi_cmd(struct scsi_xfer *xs) case WRITE_COMMAND: case WRITE_12: case WRITE_16: + if (sc->sc_state != XBF_CONNECTED) { + xbf_scsi_done(xs, XS_RESET); + return; + } break; - case SYNCHRONIZE_CACHE: if (!(sc->sc_caps & (XBF_CAP_BARRIER|XBF_CAP_FLUSH))) { xbf_scsi_done(xs, XS_NOERROR); return; } break; - case INQUIRY: xbf_scsi_inq(xs); return; @@ -376,13 +392,11 @@ xbf_scsi_cmd(struct scsi_xfer *xs) case READ_CAPACITY_16: xbf_scsi_capacity16(xs); return; - case TEST_UNIT_READY: case START_STOP: case PREVENT_ALLOW: xbf_scsi_done(xs, XS_NOERROR); return; - default: printf("%s cmd 0x%02x\n", __func__, xs->cmd->opcode); case MODE_SENSE: @@ -807,12 +821,6 @@ xbf_dev_probe(struct scsi_link *link) return (ENODEV); } -void -xbf_dev_free(struct scsi_link *link) -{ - printf("%s\n", __func__); -} - int xbf_get_type(struct xbf_softc *sc) { @@ -1182,3 +1190,43 @@ xbf_ring_destroy(struct xbf_softc *sc) sc->sc_xr = NULL; } + +void +xbf_stop(struct xbf_softc *sc) +{ + union xbf_ring_desc *xrd; + struct scsi_xfer *xs; + bus_dmamap_t map; + int desc; + + bus_dmamap_sync(sc->sc_dmat, sc->sc_xr_dma.dma_map, 0, + sc->sc_xr_dma.dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD | + BUS_DMASYNC_POSTWRITE); + + for (desc = 0; desc < sc->sc_xr_ndesc; desc++) { + xs = sc->sc_xs[desc]; + if (xs == NULL) + continue; + xrd = &sc->sc_xr->xr_desc[desc]; + DPRINTF("%s: aborting desc %u(%llu) op %u\n", + sc->sc_dev.dv_xname, desc, xrd->xrd_rsp.rsp_id, + xrd->xrd_rsp.rsp_op); + if (sc->sc_xs_bb[desc].dma_size > 0) + map = sc->sc_xs_bb[desc].dma_map; + else + map = sc->sc_xs_map[desc]; + bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, + BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sc->sc_dmat, map); + xbf_reclaim_xs(xs, desc); + xbf_scsi_done(xs, XS_RESET); + sc->sc_xs[desc] = NULL; + } + + sc->sc_state = XBF_CLOSING; + + /* Give other processes a chance to run */ + yield(); + + xbf_ring_destroy(sc); +} |