/* $NetBSD: aic79xx_osm.c,v 1.7 2003/10/30 01:58:17 simonb Exp $ */ /* * Bus independent NetBSD shim for the aic7xxx based adaptec SCSI controllers * * Copyright (c) 1994-2002 Justin T. Gibbs. * Copyright (c) 2001-2002 Adaptec Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU Public License ("GPL"). * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#26 $ * * $FreeBSD: src/sys/dev/aic7xxx/aic79xx_osm.c,v 1.11 2003/05/04 00:20:07 gibbs Exp $ */ /* * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. * - April 2003 */ #include __KERNEL_RCSID(0, "$NetBSD: aic79xx_osm.c,v 1.7 2003/10/30 01:58:17 simonb Exp $"); #include #include #include #ifndef AHD_TMODE_ENABLE #define AHD_TMODE_ENABLE 0 #endif static int ahd_ioctl(struct scsipi_channel *channel, u_long cmd, caddr_t addr, int flag, struct proc *p); static void ahd_action(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg); static void ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments); static int ahd_poll(struct ahd_softc *ahd, int wait); static void ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, struct scb *scb); #if NOT_YET static void ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb); #endif /* * Attach all the sub-devices we can find */ int ahd_attach(struct ahd_softc *ahd) { int s; char ahd_info[256]; ahd_controller_info(ahd, ahd_info); printf("%s: %s\n", ahd->sc_dev.dv_xname, ahd_info); ahd_lock(ahd, &s); ahd->sc_adapter.adapt_dev = &ahd->sc_dev; ahd->sc_adapter.adapt_nchannels = 1; ahd->sc_adapter.adapt_openings = AHD_MAX_QUEUE; ahd->sc_adapter.adapt_max_periph = 32; ahd->sc_adapter.adapt_ioctl = ahd_ioctl; ahd->sc_adapter.adapt_minphys = ahd_minphys; ahd->sc_adapter.adapt_request = ahd_action; ahd->sc_channel.chan_adapter = &ahd->sc_adapter; ahd->sc_channel.chan_bustype = &scsi_bustype; ahd->sc_channel.chan_channel = 0; ahd->sc_channel.chan_ntargets = AHD_NUM_TARGETS; ahd->sc_channel.chan_nluns = 8 /*AHD_NUM_LUNS*/; ahd->sc_channel.chan_id = ahd->our_id; ahd->sc_child = config_found((void *)ahd, &ahd->sc_channel, scsiprint); ahd_intr_enable(ahd, TRUE); if (ahd->flags & AHD_RESET_BUS_A) ahd_reset_channel(ahd, 'A', TRUE); ahd_unlock(ahd, &s); return (1); } static int ahd_ioctl(struct scsipi_channel *channel, u_long cmd, caddr_t addr, int flag, struct proc *p) { struct ahd_softc *ahd = (void *)channel->chan_adapter->adapt_dev; int s, ret = ENOTTY; switch (cmd) { case SCBUSIORESET: s = splbio(); ahd_reset_channel(ahd, channel->chan_channel == 1 ? 'B' : 'A', TRUE); splx(s); ret = 0; break; default: break; } return ret; } /* * Catch an interrupt from the adapter */ void ahd_platform_intr(void *arg) { struct ahd_softc *ahd; ahd = (struct ahd_softc *)arg; printf("%s; ahd_platform_intr\n", ahd_name(ahd)); ahd_intr(ahd); } /* * We have an scb which has been processed by the * adaptor, now we look to see how the operation * went. */ void ahd_done(struct ahd_softc *ahd, struct scb *scb) { struct scsipi_xfer *xs; struct scsipi_periph *periph; int s; LIST_REMOVE(scb, pending_links); xs = scb->xs; periph = xs->xs_periph; callout_stop(&scb->xs->xs_callout); if (xs->datalen) { int op; if (xs->xs_control & XS_CTL_DATA_IN) op = BUS_DMASYNC_POSTREAD; else op = BUS_DMASYNC_POSTWRITE; bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, scb->dmamap->dm_mapsize, op); bus_dmamap_unload(ahd->parent_dmat, scb->dmamap); } /* * If the recovery SCB completes, we have to be * out of our timeout. */ if ((scb->flags & SCB_RECOVERY_SCB) != 0) { struct scb *list_scb; /* * We were able to complete the command successfully, * so reinstate the timeouts for all other pending * commands. */ LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) { struct scsipi_xfer *txs = list_scb->xs; if (!(txs->xs_control & XS_CTL_POLL)) { callout_reset(&txs->xs_callout, (txs->timeout > 1000000) ? (txs->timeout / 1000) * hz : (txs->timeout * hz) / 1000, ahd_timeout, list_scb); } } if (ahd_get_transaction_status(scb) != XS_NOERROR) ahd_set_transaction_status(scb, XS_TIMEOUT); scsipi_printaddr(xs->xs_periph); printf("%s: no longer in timeout, status = %x\n", ahd_name(ahd), xs->status); } if (xs->error != XS_NOERROR) { /* Don't clobber any existing error state */ } else if ((xs->status == SCSI_STATUS_BUSY) || (xs->status == SCSI_STATUS_QUEUE_FULL)) { ahd_set_transaction_status(scb, XS_BUSY); printf("%s: drive (ID %d, LUN %d) queue full (SCB 0x%x)\n", ahd_name(ahd), SCB_GET_TARGET(ahd,scb), SCB_GET_LUN(scb), SCB_GET_TAG(scb)); } else if ((scb->flags & SCB_SENSE) != 0) { /* * We performed autosense retrieval. * * zero the sense data before having * the drive fill it. The SCSI spec mandates * that any untransferred data should be * assumed to be zero. Complete the 'bounce' * of sense information through buffers accessible * via bus-space by copying it into the clients * csio. */ memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); memcpy(&xs->sense.scsi_sense, ahd_get_sense_buf(ahd, scb), sizeof(struct scsipi_sense_data)); ahd_set_transaction_status(scb, XS_SENSE); } else if ((scb->flags & SCB_PKT_SENSE) != 0) { struct scsi_status_iu_header *siu; u_int sense_len; int i; /* * Copy only the sense data into the provided buffer. */ siu = (struct scsi_status_iu_header *)scb->sense_data; sense_len = MIN(scsi_4btoul(siu->sense_length), sizeof(&xs->sense.scsi_sense)); memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); memcpy(&xs->sense.scsi_sense, scb->sense_data + SIU_SENSE_OFFSET(siu), sense_len); printf("Copied %d bytes of sense data offset %d:", sense_len, SIU_SENSE_OFFSET(siu)); for (i = 0; i < sense_len; i++) printf(" 0x%x", ((uint8_t *)&xs->sense.scsi_sense)[i]); printf("\n"); ahd_set_transaction_status(scb, XS_SENSE); } if (scb->flags & SCB_FREEZE_QUEUE) { scsipi_periph_thaw(periph, 1); scb->flags &= ~SCB_FREEZE_QUEUE; } if (scb->flags & SCB_REQUEUE) ahd_set_transaction_status(scb, XS_REQUEUE); ahd_lock(ahd, &s); ahd_free_scb(ahd, scb); ahd_unlock(ahd, &s); scsipi_done(xs); } static void ahd_action(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) { struct ahd_softc *ahd; struct ahd_initiator_tinfo *tinfo; struct ahd_tmode_tstate *tstate; ahd = (void *)chan->chan_adapter->adapt_dev; switch(req) { case ADAPTER_REQ_RUN_XFER: { struct scsipi_xfer *xs; struct scsipi_periph *periph; struct scb *scb; struct hardware_scb *hscb; u_int target_id; u_int our_id; u_int col_idx; char channel; int s; xs = arg; periph = xs->xs_periph; SC_DEBUG(periph, SCSIPI_DB3, ("ahd_action\n")); target_id = periph->periph_target; our_id = ahd->our_id; channel = (chan->chan_channel == 1) ? 'B' : 'A'; /* * get an scb to use. */ ahd_lock(ahd, &s); tinfo = ahd_fetch_transinfo(ahd, channel, our_id, target_id, &tstate); if (xs->xs_tag_type != 0 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) col_idx = AHD_NEVER_COL_IDX; else col_idx = AHD_BUILD_COL_IDX(target_id, periph->periph_lun); if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { xs->error = XS_RESOURCE_SHORTAGE; ahd_unlock(ahd, &s); scsipi_done(xs); return; } ahd_unlock(ahd, &s); hscb = scb->hscb; SC_DEBUG(periph, SCSIPI_DB3, ("start scb(%p)\n", scb)); scb->xs = xs; /* * Put all the arguments for the xfer in the scb */ hscb->control = 0; hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id); hscb->lun = periph->periph_lun; if (xs->xs_control & XS_CTL_RESET) { hscb->cdb_len = 0; scb->flags |= SCB_DEVICE_RESET; hscb->control |= MK_MESSAGE; hscb->task_management = SIU_TASKMGMT_LUN_RESET; ahd_execute_scb(scb, NULL, 0); } else { hscb->task_management = 0; } ahd_setup_data(ahd, xs, scb); break; } case ADAPTER_REQ_GROW_RESOURCES: printf("%s: ADAPTER_REQ_GROW_RESOURCES\n", ahd_name(ahd)); break; case ADAPTER_REQ_SET_XFER_MODE: { struct scsipi_xfer_mode *xm = arg; struct ahd_devinfo devinfo; int target_id, our_id, first; u_int width; int s; char channel; u_int ppr_options, period, offset; uint16_t old_autoneg; target_id = xm->xm_target; our_id = chan->chan_id; channel = 'A'; s = splbio(); tinfo = ahd_fetch_transinfo(ahd, channel, our_id, target_id, &tstate); ahd_compile_devinfo(&devinfo, our_id, target_id, 0, channel, ROLE_INITIATOR); old_autoneg = tstate->auto_negotiate; /* * XXX since the period and offset are not provided here, * fake things by forcing a renegotiation using the user * settings if this is called for the first time (i.e. * during probe). Also, cap various values at the user * values, assuming that the user set it up that way. */ if (ahd->inited_target[target_id] == 0) { period = tinfo->user.period; offset = tinfo->user.offset; ppr_options = tinfo->user.ppr_options; width = tinfo->user.width; tstate->tagenable |= (ahd->user_tagenable & devinfo.target_mask); tstate->discenable |= (ahd->user_discenable & devinfo.target_mask); ahd->inited_target[target_id] = 1; first = 1; } else first = 0; if (xm->xm_mode & (PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) width = MSG_EXT_WDTR_BUS_16_BIT; else width = MSG_EXT_WDTR_BUS_8_BIT; ahd_validate_width(ahd, NULL, &width, ROLE_UNKNOWN); if (width > tinfo->user.width) width = tinfo->user.width; ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); if (!(xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_DT))) { period = 0; offset = 0; ppr_options = 0; } if ((xm->xm_mode & PERIPH_CAP_DT) && (tinfo->user.ppr_options & MSG_EXT_PPR_DT_REQ)) ppr_options |= MSG_EXT_PPR_DT_REQ; else ppr_options &= ~MSG_EXT_PPR_DT_REQ; if ((tstate->discenable & devinfo.target_mask) == 0 || (tstate->tagenable & devinfo.target_mask) == 0) ppr_options &= ~MSG_EXT_PPR_IU_REQ; if ((xm->xm_mode & PERIPH_CAP_TQING) && (ahd->user_tagenable & devinfo.target_mask)) tstate->tagenable |= devinfo.target_mask; else tstate->tagenable &= ~devinfo.target_mask; ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX); ahd_validate_offset(ahd, NULL, period, &offset, MSG_EXT_WDTR_BUS_8_BIT, ROLE_UNKNOWN); if (offset == 0) { period = 0; ppr_options = 0; } if (ppr_options != 0 && tinfo->user.transport_version >= 3) { tinfo->goal.transport_version = tinfo->user.transport_version; tinfo->curr.transport_version = tinfo->user.transport_version; } ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, AHD_TRANS_GOAL, FALSE); /* * If this is the first request, and no negotiation is * needed, just confirm the state to the scsipi layer, * so that it can print a message. */ if (old_autoneg == tstate->auto_negotiate && first) { xm->xm_mode = 0; xm->xm_period = tinfo->curr.period; xm->xm_offset = tinfo->curr.offset; if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) xm->xm_mode |= PERIPH_CAP_WIDE16; if (tinfo->curr.period) xm->xm_mode |= PERIPH_CAP_SYNC; if (tstate->tagenable & devinfo.target_mask) xm->xm_mode |= PERIPH_CAP_TQING; if (tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ) xm->xm_mode |= PERIPH_CAP_DT; scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); } splx(s); } } return; } static void ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments) { struct scb *scb; struct scsipi_xfer *xs; struct ahd_softc *ahd; struct ahd_initiator_tinfo *tinfo; struct ahd_tmode_tstate *tstate; u_int mask; int s; scb = (struct scb*)arg; xs = scb->xs; xs->error = 0; xs->status = 0; xs->xs_status = 0; ahd = (void*)xs->xs_periph->periph_channel->chan_adapter->adapt_dev; scb->sg_count = 0; if (nsegments != 0) { void *sg; int op; u_int i; ahd_setup_data_scb(ahd, scb); /* Copy the segments into our SG list */ for (i = nsegments, sg = scb->sg_list; i > 0; i--) { sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr, dm_segs->ds_len, /*last*/i == 1); dm_segs++; } if (xs->xs_control & XS_CTL_DATA_IN) op = BUS_DMASYNC_PREREAD; else op = BUS_DMASYNC_PREWRITE; bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, scb->dmamap->dm_mapsize, op); } ahd_lock(ahd, &s); /* * Last time we need to check if this SCB needs to * be aborted. */ if (ahd_get_scsi_status(scb) == XS_STS_DONE) { if (nsegments != 0) bus_dmamap_unload(ahd->parent_dmat, scb->dmamap); ahd_free_scb(ahd, scb); ahd_unlock(ahd, &s); return; } tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid), SCSIID_OUR_ID(scb->hscb->scsiid), SCSIID_TARGET(ahd, scb->hscb->scsiid), &tstate); mask = SCB_GET_TARGET_MASK(ahd, scb); if ((tstate->discenable & mask) != 0) scb->hscb->control |= DISCENB; if ((tstate->tagenable & mask) != 0) scb->hscb->control |= xs->xs_tag_type|TAG_ENB; if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU) != 0) { scb->flags |= SCB_PACKETIZED; if (scb->hscb->task_management != 0) scb->hscb->control &= ~MK_MESSAGE; } #if 0 /* This looks like it makes sense at first, but it can loop */ if ((xs->xs_control & XS_CTL_DISCOVERY) && (tinfo->goal.width != 0 || tinfo->goal.period != 0 || tinfo->goal.ppr_options != 0)) { scb->flags |= SCB_NEGOTIATE; scb->hscb->control |= MK_MESSAGE; } else #endif if ((tstate->auto_negotiate & mask) != 0) { scb->flags |= SCB_AUTO_NEGOTIATE; scb->hscb->control |= MK_MESSAGE; } LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); scb->flags |= SCB_ACTIVE; if (!(xs->xs_control & XS_CTL_POLL)) { callout_reset(&scb->xs->xs_callout, xs->timeout > 1000000 ? (xs->timeout / 1000) * hz : (xs->timeout * hz) / 1000, ahd_timeout, scb); } if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { /* Define a mapping from our tag to the SCB. */ ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb; ahd_pause(ahd); ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); ahd_unpause(ahd); } else { ahd_queue_scb(ahd, scb); } if (!(xs->xs_control & XS_CTL_POLL)) { ahd_unlock(ahd, &s); return; } /* * If we can't use interrupts, poll for completion */ SC_DEBUG(xs->xs_periph, SCSIPI_DB3, ("cmd_poll\n")); do { if (ahd_poll(ahd, xs->timeout)) { if (!(xs->xs_control & XS_CTL_SILENT)) printf("cmd fail\n"); ahd_timeout(scb); break; } } while (!(xs->xs_status & XS_STS_DONE)); ahd_unlock(ahd, &s); } static int ahd_poll(struct ahd_softc *ahd, int wait) { while (--wait) { DELAY(1000); if (ahd_inb(ahd, INTSTAT) & INT_PEND) break; } if (wait == 0) { printf("%s: board is not responding\n", ahd_name(ahd)); return (EIO); } ahd_intr((void *)ahd); return (0); } static void ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, struct scb *scb) { struct hardware_scb *hscb; hscb = scb->hscb; xs->resid = xs->status = 0; hscb->cdb_len = xs->cmdlen; if (hscb->cdb_len > MAX_CDB_LEN) { int s; /* * Should CAM start to support CDB sizes * greater than 16 bytes, we could use * the sense buffer to store the CDB. */ ahd_set_transaction_status(scb, XS_DRIVER_STUFFUP); ahd_lock(ahd, &s); ahd_free_scb(ahd, scb); ahd_unlock(ahd, &s); scsipi_done(xs); } memcpy(hscb->shared_data.idata.cdb, xs->cmd, hscb->cdb_len); /* Only use S/G if there is a transfer */ if (xs->datalen) { int error; error = bus_dmamap_load(ahd->parent_dmat, scb->dmamap, xs->data, xs->datalen, NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | ((xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); if (error) { #ifdef AHD_DEBUG printf("%s: in ahc_setup_data(): bus_dmamap_load() " "= %d\n", ahd_name(ahd), error); #endif xs->error = XS_RESOURCE_SHORTAGE; scsipi_done(xs); return; } ahd_execute_scb(scb, scb->dmamap->dm_segs, scb->dmamap->dm_nsegs); } else { ahd_execute_scb(scb, NULL, 0); } } void ahd_timeout(void *arg) { struct scb *scb; struct ahd_softc *ahd; ahd_mode_state saved_modes; int s; scb = (struct scb *)arg; ahd = (struct ahd_softc *)scb->ahd_softc; printf("%s: ahd_timeout\n", ahd_name(ahd)); ahd_lock(ahd, &s); ahd_pause_and_flushwork(ahd); saved_modes = ahd_save_modes(ahd); #if 0 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); ahd_outb(ahd, SCSISIGO, ACKO); printf("set ACK\n"); ahd_outb(ahd, SCSISIGO, 0); printf("clearing Ack\n"); ahd_restore_modes(ahd, saved_modes); #endif if ((scb->flags & SCB_ACTIVE) == 0) { /* Previous timeout took care of me already */ printf("%s: Timedout SCB already complete. " "Interrupts may not be functioning.\n", ahd_name(ahd)); ahd_unpause(ahd); ahd_unlock(ahd, &s); return; } ahd_print_path(ahd, scb); printf("SCB 0x%x - timed out\n", SCB_GET_TAG(scb)); ahd_dump_card_state(ahd); ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim), /*initiate reset*/TRUE); ahd_unlock(ahd, &s); return; } int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) { ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT /*| M_ZERO*/); if (ahd->platform_data == NULL) return (ENOMEM); memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); return (0); } void ahd_platform_free(struct ahd_softc *ahd) { free(ahd->platform_data, M_DEVBUF); } int ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd) { /* We don't sort softcs under NetBSD so report equal always */ return (0); } int ahd_detach(struct device *self, int flags) { int rv = 0; struct ahd_softc *ahd = (struct ahd_softc*)self; if (ahd->sc_child != NULL) rv = config_detach((void *)ahd->sc_child, flags); shutdownhook_disestablish(ahd->shutdown_hook); ahd_free(ahd); return rv; } void ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, ahd_queue_alg alg) { struct ahd_tmode_tstate *tstate; ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, devinfo->target, &tstate); if (alg != AHD_QUEUE_NONE) tstate->tagenable |= devinfo->target_mask; else tstate->tagenable &= ~devinfo->target_mask; } void ahd_send_async(struct ahd_softc *ahc, char channel, u_int target, u_int lun, ac_code code, void *opt_arg) { struct ahd_tmode_tstate *tstate; struct ahd_initiator_tinfo *tinfo; struct ahd_devinfo devinfo; struct scsipi_channel *chan; struct scsipi_xfer_mode xm; #ifdef DIAGNOSTIC if (channel != 'A') panic("ahd_send_async: not channel A"); #endif chan = &ahc->sc_channel; switch (code) { case AC_TRANSFER_NEG: tinfo = ahd_fetch_transinfo(ahc, channel, ahc->our_id, target, &tstate); ahd_compile_devinfo(&devinfo, ahc->our_id, target, lun, channel, ROLE_UNKNOWN); /* * Don't bother if negotiating. XXX? */ if (tinfo->curr.period != tinfo->goal.period || tinfo->curr.width != tinfo->goal.width || tinfo->curr.offset != tinfo->goal.offset || tinfo->curr.ppr_options != tinfo->goal.ppr_options) break; xm.xm_target = target; xm.xm_mode = 0; xm.xm_period = tinfo->curr.period; xm.xm_offset = tinfo->curr.offset; if (tinfo->goal.ppr_options & MSG_EXT_PPR_DT_REQ) xm.xm_mode |= PERIPH_CAP_DT; if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) xm.xm_mode |= PERIPH_CAP_WIDE16; if (tinfo->curr.period) xm.xm_mode |= PERIPH_CAP_SYNC; if (tstate->tagenable & devinfo.target_mask) xm.xm_mode |= PERIPH_CAP_TQING; scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, &xm); break; case AC_BUS_RESET: scsipi_async_event(chan, ASYNC_EVENT_RESET, NULL); case AC_SENT_BDR: default: break; } }