/* $NetBSD: adw.c,v 1.54 2016/07/14 04:19:26 msaitoh Exp $ */ /* * Generic driver for the Advanced Systems Inc. SCSI controllers * * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. * All rights reserved. * * Author: Baldassare Dante Profeta * * 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. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #include __KERNEL_RCSID(0, "$NetBSD: adw.c,v 1.54 2016/07/14 04:19:26 msaitoh Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef DDB #define Debugger() panic("should call debugger here (adw.c)") #endif /* ! DDB */ /******************************************************************************/ static int adw_alloc_controls(ADW_SOFTC *); static int adw_alloc_carriers(ADW_SOFTC *); static int adw_create_ccbs(ADW_SOFTC *, ADW_CCB *, int); static void adw_free_ccb(ADW_SOFTC *, ADW_CCB *); static void adw_reset_ccb(ADW_CCB *); static int adw_init_ccb(ADW_SOFTC *, ADW_CCB *); static ADW_CCB *adw_get_ccb(ADW_SOFTC *); static int adw_queue_ccb(ADW_SOFTC *, ADW_CCB *); static void adw_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, void *); static int adw_build_req(ADW_SOFTC *, ADW_CCB *); static void adw_build_sglist(ADW_CCB *, ADW_SCSI_REQ_Q *, ADW_SG_BLOCK *); static void adwminphys(struct buf *); static void adw_isr_callback(ADW_SOFTC *, ADW_SCSI_REQ_Q *); static void adw_async_callback(ADW_SOFTC *, u_int8_t); static void adw_print_info(ADW_SOFTC *, int); static int adw_poll(ADW_SOFTC *, struct scsipi_xfer *, int); static void adw_timeout(void *); static void adw_reset_bus(ADW_SOFTC *); /******************************************************************************/ /* DMA Mapping for Control Blocks */ /******************************************************************************/ static int adw_alloc_controls(ADW_SOFTC *sc) { bus_dma_segment_t seg; int error, rseg; /* * Allocate the control structure. */ if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adw_control), PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { aprint_error_dev(sc->sc_dev, "unable to allocate control " "structures, error = %d\n", error); return (error); } if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, sizeof(struct adw_control), (void **) & sc->sc_control, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { aprint_error_dev(sc->sc_dev, "unable to map control structures, error = %d\n", error); return (error); } /* * Create and load the DMA map used for the control blocks. */ if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adw_control), 1, sizeof(struct adw_control), 0, BUS_DMA_NOWAIT, &sc->sc_dmamap_control)) != 0) { aprint_error_dev(sc->sc_dev, "unable to create control DMA map, error = %d\n", error); return (error); } if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, sc->sc_control, sizeof(struct adw_control), NULL, BUS_DMA_NOWAIT)) != 0) { aprint_error_dev(sc->sc_dev, "unable to load control DMA map, error = %d\n", error); return (error); } return (0); } static int adw_alloc_carriers(ADW_SOFTC *sc) { bus_dma_segment_t seg; int error, rseg; /* * Allocate the control structure. */ sc->sc_control->carriers = malloc(sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, M_DEVBUF, M_WAITOK); if(!sc->sc_control->carriers) { aprint_error_dev(sc->sc_dev, "malloc() failed in allocating carrier structures\n"); return (ENOMEM); } if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 0x10, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { aprint_error_dev(sc->sc_dev, "unable to allocate carrier " "structures, error = %d\n", error); return (error); } if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, (void **)&sc->sc_control->carriers, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { aprint_error_dev(sc->sc_dev, "unable to map carrier structures, error = %d\n", error); return (error); } /* * Create and load the DMA map used for the control blocks. */ if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 1, sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 0,BUS_DMA_NOWAIT, &sc->sc_dmamap_carrier)) != 0) { aprint_error_dev(sc->sc_dev, "unable to create carriers DMA map, error = %d\n", error); return (error); } if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_carrier, sc->sc_control->carriers, sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, NULL, BUS_DMA_NOWAIT)) != 0) { aprint_error_dev(sc->sc_dev, "unable to load carriers DMA map, error = %d\n", error); return (error); } return (0); } /******************************************************************************/ /* Control Blocks routines */ /******************************************************************************/ /* * Create a set of ccbs and add them to the free list. Called once * by adw_init(). We return the number of CCBs successfully created. */ static int adw_create_ccbs(ADW_SOFTC *sc, ADW_CCB *ccbstore, int count) { ADW_CCB *ccb; int i, error; for (i = 0; i < count; i++) { ccb = &ccbstore[i]; if ((error = adw_init_ccb(sc, ccb)) != 0) { aprint_error_dev(sc->sc_dev, "unable to initialize ccb, error = %d\n", error); return (i); } TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); } return (i); } /* * A ccb is put onto the free list. */ static void adw_free_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) { int s; s = splbio(); adw_reset_ccb(ccb); TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); splx(s); } static void adw_reset_ccb(ADW_CCB *ccb) { ccb->flags = 0; } static int adw_init_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) { int hashnum, error; /* * Create the DMA map for this CCB. */ error = bus_dmamap_create(sc->sc_dmat, (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, ADW_MAX_SG_LIST, (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); if (error) { aprint_error_dev(sc->sc_dev, "unable to create CCB DMA map, error = %d\n", error); return (error); } /* * put in the phystokv hash table * Never gets taken out. */ ccb->hashkey = htole32(sc->sc_dmamap_control->dm_segs[0].ds_addr + ADW_CCB_OFF(ccb)); hashnum = CCB_HASH(ccb->hashkey); ccb->nexthash = sc->sc_ccbhash[hashnum]; sc->sc_ccbhash[hashnum] = ccb; adw_reset_ccb(ccb); return (0); } /* * Get a free ccb * * If there are none, see if we can allocate a new one */ static ADW_CCB * adw_get_ccb(ADW_SOFTC *sc) { ADW_CCB *ccb = 0; int s; s = splbio(); ccb = sc->sc_free_ccb.tqh_first; if (ccb != NULL) { TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); ccb->flags |= CCB_ALLOC; } splx(s); return (ccb); } /* * Given a physical address, find the ccb that it corresponds to. */ ADW_CCB * adw_ccb_phys_kv(ADW_SOFTC *sc, u_int32_t ccb_phys) { int hashnum = CCB_HASH(ccb_phys); ADW_CCB *ccb = sc->sc_ccbhash[hashnum]; while (ccb) { if (ccb->hashkey == ccb_phys) break; ccb = ccb->nexthash; } return (ccb); } /* * Queue a CCB to be sent to the controller, and send it if possible. */ static int adw_queue_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) { int errcode = ADW_SUCCESS; TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); errcode = AdwExeScsiQueue(sc, &ccb->scsiq); switch(errcode) { case ADW_SUCCESS: break; case ADW_BUSY: printf("ADW_BUSY\n"); return(ADW_BUSY); case ADW_ERROR: printf("ADW_ERROR\n"); return(ADW_ERROR); } TAILQ_INSERT_TAIL(&sc->sc_pending_ccb, ccb, chain); if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) callout_reset(&ccb->xs->xs_callout, mstohz(ccb->timeout), adw_timeout, ccb); } return(errcode); } /******************************************************************************/ /* SCSI layer interfacing routines */ /******************************************************************************/ int adw_init(ADW_SOFTC *sc) { u_int16_t warn_code; sc->cfg.lib_version = (ADW_LIB_VERSION_MAJOR << 8) | ADW_LIB_VERSION_MINOR; sc->cfg.chip_version = ADW_GET_CHIP_VERSION(sc->sc_iot, sc->sc_ioh, sc->bus_type); /* * Reset the chip to start and allow register writes. */ if (ADW_FIND_SIGNATURE(sc->sc_iot, sc->sc_ioh) == 0) { panic("adw_init: adw_find_signature failed"); } else { AdwResetChip(sc->sc_iot, sc->sc_ioh); warn_code = AdwInitFromEEPROM(sc); if (warn_code & ADW_WARN_EEPROM_CHKSUM) aprint_error_dev(sc->sc_dev, "Bad checksum found. " "Setting default values\n"); if (warn_code & ADW_WARN_EEPROM_TERMINATION) aprint_error_dev(sc->sc_dev, "Bad bus termination " "setting. Using automatic termination.\n"); } sc->isr_callback = (ADW_CALLBACK) adw_isr_callback; sc->async_callback = (ADW_CALLBACK) adw_async_callback; return 0; } void adw_attach(ADW_SOFTC *sc) { struct scsipi_adapter *adapt = &sc->sc_adapter; struct scsipi_channel *chan = &sc->sc_channel; int ncontrols, error; TAILQ_INIT(&sc->sc_free_ccb); TAILQ_INIT(&sc->sc_waiting_ccb); TAILQ_INIT(&sc->sc_pending_ccb); /* * Allocate the Control Blocks. */ error = adw_alloc_controls(sc); if (error) return; /* (error) */ ; memset(sc->sc_control, 0, sizeof(struct adw_control)); /* * Create and initialize the Control Blocks. */ ncontrols = adw_create_ccbs(sc, sc->sc_control->ccbs, ADW_MAX_CCB); if (ncontrols == 0) { aprint_error_dev(sc->sc_dev, "unable to create Control Blocks\n"); return; /* (ENOMEM) */ ; } else if (ncontrols != ADW_MAX_CCB) { aprint_error_dev(sc->sc_dev, "WARNING: only %d of %d Control Blocks created\n", ncontrols, ADW_MAX_CCB); } /* * Create and initialize the Carriers. */ error = adw_alloc_carriers(sc); if (error) return; /* (error) */ ; /* * Zero's the freeze_device status */ memset(sc->sc_freeze_dev, 0, sizeof(sc->sc_freeze_dev)); /* * Initialize the adapter */ switch (AdwInitDriver(sc)) { case ADW_IERR_BIST_PRE_TEST: panic("%s: BIST pre-test error", device_xname(sc->sc_dev)); break; case ADW_IERR_BIST_RAM_TEST: panic("%s: BIST RAM test error", device_xname(sc->sc_dev)); break; case ADW_IERR_MCODE_CHKSUM: panic("%s: Microcode checksum error", device_xname(sc->sc_dev)); break; case ADW_IERR_ILLEGAL_CONNECTION: panic("%s: All three connectors are in use", device_xname(sc->sc_dev)); break; case ADW_IERR_REVERSED_CABLE: panic("%s: Cable is reversed", device_xname(sc->sc_dev)); break; case ADW_IERR_HVD_DEVICE: panic("%s: HVD attached to LVD connector", device_xname(sc->sc_dev)); break; case ADW_IERR_SINGLE_END_DEVICE: panic("%s: single-ended device is attached to" " one of the connectors", device_xname(sc->sc_dev)); break; case ADW_IERR_NO_CARRIER: panic("%s: unable to create Carriers", device_xname(sc->sc_dev)); break; case ADW_WARN_BUSRESET_ERROR: aprint_error_dev(sc->sc_dev, "WARNING: Bus Reset Error\n"); break; } /* * Fill in the scsipi_adapter. */ memset(adapt, 0, sizeof(*adapt)); adapt->adapt_dev = sc->sc_dev; adapt->adapt_nchannels = 1; adapt->adapt_openings = ncontrols; adapt->adapt_max_periph = adapt->adapt_openings; adapt->adapt_request = adw_scsipi_request; adapt->adapt_minphys = adwminphys; /* * Fill in the scsipi_channel. */ memset(chan, 0, sizeof(*chan)); chan->chan_adapter = adapt; chan->chan_bustype = &scsi_bustype; chan->chan_channel = 0; chan->chan_ntargets = ADW_MAX_TID + 1; chan->chan_nluns = 8; chan->chan_id = sc->chip_scsi_id; config_found(sc->sc_dev, &sc->sc_channel, scsiprint); } static void adwminphys(struct buf *bp) { if (bp->b_bcount > ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE)) bp->b_bcount = ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE); minphys(bp); } /* * start a scsi operation given the command and the data address. * Also needs the unit, target and lu. */ static void adw_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) { struct scsipi_xfer *xs; ADW_SOFTC *sc = device_private(chan->chan_adapter->adapt_dev); ADW_CCB *ccb; int s, retry; switch (req) { case ADAPTER_REQ_RUN_XFER: xs = arg; /* * get a ccb to use. If the transfer * is from a buf (possibly from interrupt time) * then we can't allow it to sleep */ ccb = adw_get_ccb(sc); #ifdef DIAGNOSTIC /* * This should never happen as we track the resources * in the mid-layer. */ if (ccb == NULL) { scsipi_printaddr(xs->xs_periph); printf("unable to allocate ccb\n"); panic("adw_scsipi_request"); } #endif ccb->xs = xs; ccb->timeout = xs->timeout; if (adw_build_req(sc, ccb)) { s = splbio(); retry = adw_queue_ccb(sc, ccb); splx(s); switch(retry) { case ADW_BUSY: xs->error = XS_RESOURCE_SHORTAGE; adw_free_ccb(sc, ccb); scsipi_done(xs); return; case ADW_ERROR: xs->error = XS_DRIVER_STUFFUP; adw_free_ccb(sc, ccb); scsipi_done(xs); return; } if ((xs->xs_control & XS_CTL_POLL) == 0) return; /* * Not allowed to use interrupts, poll for completion. */ if (adw_poll(sc, xs, ccb->timeout)) { adw_timeout(ccb); if (adw_poll(sc, xs, ccb->timeout)) adw_timeout(ccb); } } return; case ADAPTER_REQ_GROW_RESOURCES: /* XXX Not supported. */ return; case ADAPTER_REQ_SET_XFER_MODE: /* XXX XXX XXX */ return; } } /* * Build a request structure for the Wide Boards. */ static int adw_build_req(ADW_SOFTC *sc, ADW_CCB *ccb) { struct scsipi_xfer *xs = ccb->xs; struct scsipi_periph *periph = xs->xs_periph; bus_dma_tag_t dmat = sc->sc_dmat; ADW_SCSI_REQ_Q *scsiqp; int error; scsiqp = &ccb->scsiq; memset(scsiqp, 0, sizeof(ADW_SCSI_REQ_Q)); /* * Set the ADW_SCSI_REQ_Q 'ccb_ptr' to point to the * physical CCB structure. */ scsiqp->ccb_ptr = ccb->hashkey; /* * Build the ADW_SCSI_REQ_Q request. */ /* * Set CDB length and copy it to the request structure. * For wide boards a CDB length maximum of 16 bytes * is supported. */ memcpy(&scsiqp->cdb, xs->cmd, ((scsiqp->cdb_len = xs->cmdlen) <= 12)? xs->cmdlen : 12 ); if(xs->cmdlen > 12) memcpy(&scsiqp->cdb16, &(xs->cmd[12]), xs->cmdlen - 12); scsiqp->target_id = periph->periph_target; scsiqp->target_lun = periph->periph_lun; scsiqp->vsense_addr = &ccb->scsi_sense; scsiqp->sense_addr = htole32(sc->sc_dmamap_control->dm_segs[0].ds_addr + ADW_CCB_OFF(ccb) + offsetof(struct adw_ccb, scsi_sense)); scsiqp->sense_len = sizeof(struct scsi_sense_data); /* * Build ADW_SCSI_REQ_Q for a scatter-gather buffer command. */ if (xs->datalen) { /* * Map the DMA transfer. */ #ifdef TFS if (xs->xs_control & SCSI_DATA_UIO) { error = bus_dmamap_load_uio(dmat, ccb->dmamap_xfer, (struct uio *) xs->data, ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); } else #endif /* TFS */ { error = bus_dmamap_load(dmat, ccb->dmamap_xfer, 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)); } switch (error) { case 0: break; case ENOMEM: case EAGAIN: xs->error = XS_RESOURCE_SHORTAGE; goto out_bad; default: xs->error = XS_DRIVER_STUFFUP; aprint_error_dev(sc->sc_dev, "error %d loading DMA map\n", error); out_bad: adw_free_ccb(sc, ccb); scsipi_done(xs); return(0); } bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, ccb->dmamap_xfer->dm_mapsize, (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); /* * Build scatter-gather list. */ scsiqp->data_cnt = htole32(xs->datalen); scsiqp->vdata_addr = xs->data; scsiqp->data_addr = htole32(ccb->dmamap_xfer->dm_segs[0].ds_addr); memset(ccb->sg_block, 0, sizeof(ADW_SG_BLOCK) * ADW_NUM_SG_BLOCK); adw_build_sglist(ccb, scsiqp, ccb->sg_block); } else { /* * No data xfer, use non S/G values. */ scsiqp->data_cnt = 0; scsiqp->vdata_addr = 0; scsiqp->data_addr = 0; } return (1); } /* * Build scatter-gather list for Wide Boards. */ static void adw_build_sglist(ADW_CCB *ccb, ADW_SCSI_REQ_Q *scsiqp, ADW_SG_BLOCK *sg_block) { u_long sg_block_next_addr; /* block and its next */ u_int32_t sg_block_physical_addr; int i; /* how many SG entries */ bus_dma_segment_t *sg_list = &ccb->dmamap_xfer->dm_segs[0]; int sg_elem_cnt = ccb->dmamap_xfer->dm_nsegs; sg_block_next_addr = (u_long) sg_block; /* allow math operation */ sg_block_physical_addr = le32toh(ccb->hashkey) + offsetof(struct adw_ccb, sg_block[0]); scsiqp->sg_real_addr = htole32(sg_block_physical_addr); /* * If there are more than NO_OF_SG_PER_BLOCK DMA segments (hw sg-list) * then split the request into multiple sg-list blocks. */ do { for (i = 0; i < NO_OF_SG_PER_BLOCK; i++) { sg_block->sg_list[i].sg_addr = htole32(sg_list->ds_addr); sg_block->sg_list[i].sg_count = htole32(sg_list->ds_len); if (--sg_elem_cnt == 0) { /* last entry, get out */ sg_block->sg_cnt = i + 1; sg_block->sg_ptr = 0; /* next link = NULL */ return; } sg_list++; } sg_block_next_addr += sizeof(ADW_SG_BLOCK); sg_block_physical_addr += sizeof(ADW_SG_BLOCK); sg_block->sg_cnt = NO_OF_SG_PER_BLOCK; sg_block->sg_ptr = htole32(sg_block_physical_addr); sg_block = (ADW_SG_BLOCK *) sg_block_next_addr; /* virt. addr */ } while (1); } /******************************************************************************/ /* Interrupts and TimeOut routines */ /******************************************************************************/ int adw_intr(void *arg) { ADW_SOFTC *sc = arg; if(AdwISR(sc) != ADW_FALSE) { return (1); } return (0); } /* * Poll a particular unit, looking for a particular xs */ static int adw_poll(ADW_SOFTC *sc, struct scsipi_xfer *xs, int count) { /* timeouts are in msec, so we loop in 1000 usec cycles */ while (count) { adw_intr(sc); if (xs->xs_status & XS_STS_DONE) return (0); delay(1000); /* only happens in boot so ok */ count--; } return (1); } static void adw_timeout(void *arg) { ADW_CCB *ccb = arg; struct scsipi_xfer *xs = ccb->xs; struct scsipi_periph *periph = xs->xs_periph; ADW_SOFTC *sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); int s; scsipi_printaddr(periph); printf("timed out"); s = splbio(); if (ccb->flags & CCB_ABORTED) { /* * Abort Timed Out * * No more opportunities. Lets try resetting the bus and * reinitialize the host adapter. */ callout_stop(&xs->xs_callout); printf(" AGAIN. Resetting SCSI Bus\n"); adw_reset_bus(sc); splx(s); return; } else if (ccb->flags & CCB_ABORTING) { /* * Abort the operation that has timed out. * * Second opportunity. */ printf("\n"); xs->error = XS_TIMEOUT; ccb->flags |= CCB_ABORTED; #if 0 /* * - XXX - 3.3a microcode is BROKEN!!! * * We cannot abort a CCB, so we can only hope the command * get completed before the next timeout, otherwise a * Bus Reset will arrive inexorably. */ /* * ADW_ABORT_CCB() makes the board to generate an interrupt * * - XXX - The above assertion MUST be verified (and this * code changed as well [callout_*()]), when the * ADW_ABORT_CCB will be working again */ ADW_ABORT_CCB(sc, ccb); #endif /* * waiting for multishot callout_reset() let's restart it * by hand so the next time a timeout event will occur * we will reset the bus. */ callout_reset(&xs->xs_callout, mstohz(ccb->timeout), adw_timeout, ccb); } else { /* * Abort the operation that has timed out. * * First opportunity. */ printf("\n"); xs->error = XS_TIMEOUT; ccb->flags |= CCB_ABORTING; #if 0 /* * - XXX - 3.3a microcode is BROKEN!!! * * We cannot abort a CCB, so we can only hope the command * get completed before the next 2 timeout, otherwise a * Bus Reset will arrive inexorably. */ /* * ADW_ABORT_CCB() makes the board to generate an interrupt * * - XXX - The above assertion MUST be verified (and this * code changed as well [callout_*()]), when the * ADW_ABORT_CCB will be working again */ ADW_ABORT_CCB(sc, ccb); #endif /* * waiting for multishot callout_reset() let's restart it * by hand so to give a second opportunity to the command * which timed-out. */ callout_reset(&xs->xs_callout, mstohz(ccb->timeout), adw_timeout, ccb); } splx(s); } static void adw_reset_bus(ADW_SOFTC *sc) { ADW_CCB *ccb; int s; struct scsipi_xfer *xs; s = splbio(); AdwResetSCSIBus(sc); while((ccb = TAILQ_LAST(&sc->sc_pending_ccb, adw_pending_ccb)) != NULL) { callout_stop(&ccb->xs->xs_callout); TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); xs = ccb->xs; adw_free_ccb(sc, ccb); xs->error = XS_RESOURCE_SHORTAGE; scsipi_done(xs); } splx(s); } /******************************************************************************/ /* Host Adapter and Peripherals Information Routines */ /******************************************************************************/ static void adw_print_info(ADW_SOFTC *sc, int tid) { bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; u_int16_t wdtr_able, wdtr_done, wdtr; u_int16_t sdtr_able, sdtr_done, sdtr, period; static int wdtr_reneg = 0, sdtr_reneg = 0; if (tid == 0){ wdtr_reneg = sdtr_reneg = 0; } printf("%s: target %d ", device_xname(sc->sc_dev), tid); ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, wdtr_able); if(wdtr_able & ADW_TID_TO_TIDMASK(tid)) { ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, wdtr_done); ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + (2 * tid), wdtr); printf("using %d-bits wide, ", (wdtr & 0x8000)? 16 : 8); if((wdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) wdtr_reneg = 1; } else { printf("wide transfers disabled, "); } ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, sdtr_able); if(sdtr_able & ADW_TID_TO_TIDMASK(tid)) { ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, sdtr_done); ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + (2 * tid), sdtr); sdtr &= ~0x8000; if((sdtr & 0x1F) != 0) { if((sdtr & 0x1F00) == 0x1100){ printf("80.0 MHz"); } else if((sdtr & 0x1F00) == 0x1000){ printf("40.0 MHz"); } else { /* <= 20.0 MHz */ period = (((sdtr >> 8) * 25) + 50)/4; if(period == 0) { /* Should never happen. */ printf("? MHz"); } else { printf("%d.%d MHz", 250/period, ADW_TENTHS(250, period)); } } printf(" synchronous transfers\n"); } else { printf("asynchronous transfers\n"); } if((sdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) sdtr_reneg = 1; } else { printf("synchronous transfers disabled\n"); } if(wdtr_reneg || sdtr_reneg) { printf("%s: target %d %s", device_xname(sc->sc_dev), tid, (wdtr_reneg)? ((sdtr_reneg)? "wide/sync" : "wide") : ((sdtr_reneg)? "sync" : "") ); printf(" renegotiation pending before next command.\n"); } } /******************************************************************************/ /* WIDE boards Interrupt callbacks */ /******************************************************************************/ /* * adw_isr_callback() - Second Level Interrupt Handler called by AdwISR() * * Interrupt callback function for the Wide SCSI Adv Library. * * Notice: * Interrupts are disabled by the caller (AdwISR() function), and will be * enabled at the end of the caller. */ static void adw_isr_callback(ADW_SOFTC *sc, ADW_SCSI_REQ_Q *scsiq) { bus_dma_tag_t dmat = sc->sc_dmat; ADW_CCB *ccb; struct scsipi_xfer *xs; struct scsi_sense_data *s1, *s2; ccb = adw_ccb_phys_kv(sc, scsiq->ccb_ptr); callout_stop(&ccb->xs->xs_callout); xs = ccb->xs; /* * If we were a data transfer, unload the map that described * the data buffer. */ if (xs->datalen) { bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, ccb->dmamap_xfer->dm_mapsize, (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(dmat, ccb->dmamap_xfer); } if ((ccb->flags & CCB_ALLOC) == 0) { aprint_error_dev(sc->sc_dev, "exiting ccb not allocated!\n"); Debugger(); return; } /* * 'done_status' contains the command's ending status. * 'host_status' contains the host adapter status. * 'scsi_status' contains the scsi peripheral status. */ if ((scsiq->host_status == QHSTA_NO_ERROR) && ((scsiq->done_status == QD_NO_ERROR) || (scsiq->done_status == QD_WITH_ERROR))) { switch (scsiq->scsi_status) { case SCSI_STATUS_GOOD: if ((scsiq->cdb[0] == INQUIRY) && (scsiq->target_lun == 0)) { adw_print_info(sc, scsiq->target_id); } xs->error = XS_NOERROR; xs->resid = le32toh(scsiq->data_cnt); sc->sc_freeze_dev[scsiq->target_id] = 0; break; case SCSI_STATUS_CHECK_CONDITION: case SCSI_STATUS_CMD_TERMINATED: s1 = &ccb->scsi_sense; s2 = &xs->sense.scsi_sense; *s2 = *s1; xs->error = XS_SENSE; sc->sc_freeze_dev[scsiq->target_id] = 1; break; default: xs->error = XS_BUSY; sc->sc_freeze_dev[scsiq->target_id] = 1; break; } } else if (scsiq->done_status == QD_ABORTED_BY_HOST) { xs->error = XS_DRIVER_STUFFUP; } else { switch (scsiq->host_status) { case QHSTA_M_SEL_TIMEOUT: xs->error = XS_SELTIMEOUT; break; case QHSTA_M_SXFR_OFF_UFLW: case QHSTA_M_SXFR_OFF_OFLW: case QHSTA_M_DATA_OVER_RUN: aprint_error_dev(sc->sc_dev, "Overrun/Overflow/Underflow condition\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_SXFR_DESELECTED: case QHSTA_M_UNEXPECTED_BUS_FREE: aprint_error_dev(sc->sc_dev, "Unexpected BUS free\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_SCSI_BUS_RESET: case QHSTA_M_SCSI_BUS_RESET_UNSOL: aprint_error_dev(sc->sc_dev, "BUS Reset\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_BUS_DEVICE_RESET: aprint_error_dev(sc->sc_dev, "Device Reset\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_QUEUE_ABORTED: aprint_error_dev(sc->sc_dev, "Queue Aborted\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_SXFR_SDMA_ERR: case QHSTA_M_SXFR_SXFR_PERR: case QHSTA_M_RDMA_PERR: /* * DMA Error. This should *NEVER* happen! * * Lets try resetting the bus and reinitialize * the host adapter. */ aprint_error_dev(sc->sc_dev, "DMA Error. Reseting bus\n"); TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); adw_reset_bus(sc); xs->error = XS_BUSY; goto done; case QHSTA_M_WTM_TIMEOUT: case QHSTA_M_SXFR_WD_TMO: /* The SCSI bus hung in a phase */ printf("%s: Watch Dog timer expired. Reseting bus\n", device_xname(sc->sc_dev)); TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); adw_reset_bus(sc); xs->error = XS_BUSY; goto done; case QHSTA_M_SXFR_XFR_PH_ERR: aprint_error_dev(sc->sc_dev, "Transfer Error\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_BAD_CMPL_STATUS_IN: /* No command complete after a status message */ printf("%s: Bad Completion Status\n", device_xname(sc->sc_dev)); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_AUTO_REQ_SENSE_FAIL: aprint_error_dev(sc->sc_dev, "Auto Sense Failed\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_INVALID_DEVICE: aprint_error_dev(sc->sc_dev, "Invalid Device\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_NO_AUTO_REQ_SENSE: /* * User didn't request sense, but we got a * check condition. */ aprint_error_dev(sc->sc_dev, "Unexpected Check Condition\n"); xs->error = XS_DRIVER_STUFFUP; break; case QHSTA_M_SXFR_UNKNOWN_ERROR: aprint_error_dev(sc->sc_dev, "Unknown Error\n"); xs->error = XS_DRIVER_STUFFUP; break; default: panic("%s: Unhandled Host Status Error %x", device_xname(sc->sc_dev), scsiq->host_status); } } TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); done: adw_free_ccb(sc, ccb); scsipi_done(xs); } /* * adw_async_callback() - Adv Library asynchronous event callback function. */ static void adw_async_callback(ADW_SOFTC *sc, u_int8_t code) { switch (code) { case ADV_ASYNC_SCSI_BUS_RESET_DET: /* The firmware detected a SCSI Bus reset. */ printf("%s: SCSI Bus reset detected\n", device_xname(sc->sc_dev)); break; case ADV_ASYNC_RDMA_FAILURE: /* * Handle RDMA failure by resetting the SCSI Bus and * possibly the chip if it is unresponsive. */ printf("%s: RDMA failure. Resetting the SCSI Bus and" " the adapter\n", device_xname(sc->sc_dev)); AdwResetSCSIBus(sc); break; case ADV_HOST_SCSI_BUS_RESET: /* Host generated SCSI bus reset occurred. */ printf("%s: Host generated SCSI bus reset occurred\n", device_xname(sc->sc_dev)); break; case ADV_ASYNC_CARRIER_READY_FAILURE: /* Carrier Ready failure. */ printf("%s: Carrier Ready failure!\n", device_xname(sc->sc_dev)); break; default: break; } }