/* $NetBSD: atapi_wdc.c,v 1.43 2001/06/27 13:22:36 bouyer Exp $ */ /* * Copyright (c) 1998 Manuel Bouyer. * * 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 University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 AUTHOR ``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 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. * */ #ifndef WDCDEBUG #define WDCDEBUG #endif /* WDCDEBUG */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __BUS_SPACE_HAS_STREAM_METHODS #define bus_space_write_multi_stream_2 bus_space_write_multi_2 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ #include #include #include #include #include /* for SCSI status */ #define DEBUG_INTR 0x01 #define DEBUG_XFERS 0x02 #define DEBUG_STATUS 0x04 #define DEBUG_FUNCS 0x08 #define DEBUG_PROBE 0x10 #ifdef WDCDEBUG int wdcdebug_atapi_mask = 0; #define WDCDEBUG_PRINT(args, level) \ if (wdcdebug_atapi_mask & (level)) \ printf args #else #define WDCDEBUG_PRINT(args, level) #endif #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ int wdc_atapi_get_params __P((struct scsipi_channel *, int, int, struct ataparams *)); void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); void wdc_atapi_minphys __P((struct buf *bp)); void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); void wdc_atapi_scsipi_request __P((struct scsipi_channel *, scsipi_adapter_req_t, void *)); void wdc_atapi_kill_pending __P((struct scsipi_periph *)); #define MAX_SIZE MAXPHYS const struct scsipi_bustype wdc_atapi_bustype = { SCSIPI_BUSTYPE_ATAPI, atapi_scsipi_cmd, atapi_interpret_sense, atapi_print_addr, wdc_atapi_kill_pending, }; void wdc_atapibus_attach(chp) struct channel_softc *chp; { struct wdc_softc *wdc = chp->wdc; struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; struct scsipi_channel *chan = &chp->ch_atapi_channel; struct ata_atapi_attach aa; /* * Fill in the scsipi_adapter. */ memset(adapt, 0, sizeof(*adapt)); adapt->adapt_dev = &wdc->sc_dev; adapt->adapt_nchannels = wdc->nchannels; adapt->adapt_request = wdc_atapi_scsipi_request; adapt->adapt_minphys = wdc_atapi_minphys; if (wdc->cap & WDC_CAPABILITY_NOIRQ) adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; /* * Fill in the scsipi_channel. */ memset(chan, 0, sizeof(*chan)); chan->chan_adapter = adapt; chan->chan_bustype = &wdc_atapi_bustype; chan->chan_channel = chp->channel; chan->chan_flags = SCSIPI_CHAN_OPENINGS; chan->chan_openings = 1; chan->chan_max_periph = 1; chan->chan_ntargets = 2; chan->chan_nluns = 1; memset(&aa, 0, sizeof(aa)); aa.aa_type = T_ATAPI; aa.aa_channel = chan->chan_channel; aa.aa_openings = chan->chan_openings; aa.aa_drv_data = chp->ch_drive; /* pass the whole array */ aa.aa_bus_private = chan; chp->atapibus = config_found(&wdc->sc_dev, &aa, atapiprint); } void wdc_atapi_minphys(bp) struct buf *bp; { if (bp->b_bcount > MAX_SIZE) bp->b_bcount = MAX_SIZE; minphys(bp); } /* * Kill off all pending xfers for a periph. * * Must be called at splbio(). */ void wdc_atapi_kill_pending(periph) struct scsipi_periph *periph; { struct wdc_softc *wdc = (void *)periph->periph_channel->chan_adapter->adapt_dev; struct channel_softc *chp = wdc->channels[periph->periph_channel->chan_channel]; wdc_kill_pending(chp); } void wdc_atapi_kill_xfer(chp, xfer) struct channel_softc *chp; struct wdc_xfer *xfer; { struct scsipi_xfer *sc_xfer = xfer->cmd; callout_stop(&chp->ch_callout); /* remove this command from xfer queue */ wdc_free_xfer(chp, xfer); sc_xfer->error = XS_DRIVER_STUFFUP; scsipi_done(sc_xfer); } int wdc_atapi_get_params(chan, drive, flags, id) struct scsipi_channel *chan; int drive, flags; struct ataparams *id; { struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; struct channel_softc *chp = wdc->channels[chan->chan_channel]; struct wdc_command wdc_c; /* if no ATAPI device detected at wdc attach time, skip */ /* * XXX this will break scsireprobe if this is of any interest for * ATAPI devices one day. */ if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", drive), DEBUG_PROBE); return -1; } memset(&wdc_c, 0, sizeof(struct wdc_command)); wdc_c.r_command = ATAPI_SOFT_RESET; wdc_c.r_st_bmask = 0; wdc_c.r_st_pmask = 0; wdc_c.flags = AT_POLL; wdc_c.timeout = WDC_RESET_WAIT; if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" " drive %s:%d:%d: driver failed\n", chp->wdc->sc_dev.dv_xname, chp->channel, drive); panic("wdc_atapi_get_params"); } if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " "failed for drive %s:%d:%d: error 0x%x\n", chp->wdc->sc_dev.dv_xname, chp->channel, drive, wdc_c.r_error), DEBUG_PROBE); return -1; } chp->ch_drive[drive].state = 0; bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); /* Some ATAPI devices need a bit more time after software reset. */ delay(5000); if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " "failed for drive %s:%d:%d: error 0x%x\n", chp->wdc->sc_dev.dv_xname, chp->channel, drive, wdc_c.r_error), DEBUG_PROBE); return -1; } return 0; } void wdc_atapi_probe_device(sc, target) struct atapibus_softc *sc; int target; { struct scsipi_channel *chan = sc->sc_channel; struct scsipi_periph *periph; struct ataparams ids; struct ataparams *id = &ids; struct ata_drive_datas *drvp = &sc->sc_drvs[target]; struct scsipibus_attach_args sa; char serial_number[21], model[41], firmware_revision[9]; /* skip if already attached */ if (scsipi_lookup_periph(chan, target, 0) != NULL) return; if (wdc_atapi_get_params(chan, target, XS_CTL_POLL|XS_CTL_NOSLEEP, id) == 0) { #ifdef ATAPI_DEBUG_PROBE printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", sc->sc_dev.dv_xname, target, id->atap_config & ATAPI_CFG_CMD_MASK, id->atap_config & ATAPI_CFG_DRQ_MASK); #endif periph = scsipi_alloc_periph(M_NOWAIT); if (periph == NULL) { printf("%s: unable to allocate periph for drive %d\n", sc->sc_dev.dv_xname, target); return; } periph->periph_dev = NULL; periph->periph_channel = chan; periph->periph_switch = &atapi_probe_periphsw; periph->periph_target = target; periph->periph_lun = 0; #ifdef SCSIPI_DEBUG if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && SCSIPI_DEBUG_TARGET == target) periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; #endif periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); if (id->atap_config & ATAPI_CFG_REMOV) periph->periph_flags |= PERIPH_REMOVABLE; sa.sa_periph = periph; sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? T_REMOV : T_FIXED; scsipi_strvis(model, 40, id->atap_model, 40); scsipi_strvis(serial_number, 20, id->atap_serial, 20); scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); sa.sa_inqbuf.vendor = model; sa.sa_inqbuf.product = serial_number; sa.sa_inqbuf.revision = firmware_revision; /* * Determine the operating mode capabilities of the device. */ if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) periph->periph_cap |= PERIPH_CAP_CMD16; /* XXX This is gross. */ periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); if (drvp->drv_softc) wdc_probe_caps(drvp); } } void wdc_atapi_scsipi_request(chan, req, arg) struct scsipi_channel *chan; scsipi_adapter_req_t req; void *arg; { struct scsipi_adapter *adapt = chan->chan_adapter; struct scsipi_periph *periph; struct scsipi_xfer *sc_xfer; struct wdc_softc *wdc = (void *)adapt->adapt_dev; struct wdc_xfer *xfer; int channel = chan->chan_channel; int drive, s; switch (req) { case ADAPTER_REQ_RUN_XFER: sc_xfer = arg; periph = sc_xfer->xs_periph; drive = periph->periph_target; WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { sc_xfer->error = XS_DRIVER_STUFFUP; scsipi_done(sc_xfer); return; } xfer = wdc_get_xfer(WDC_NOSLEEP); if (xfer == NULL) { sc_xfer->error = XS_RESOURCE_SHORTAGE; scsipi_done(sc_xfer); return; } if (sc_xfer->xs_control & XS_CTL_POLL) xfer->c_flags |= C_POLL; xfer->drive = drive; xfer->c_flags |= C_ATAPI; if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || sc_xfer->cmd->opcode == GPCMD_SEND_KEY || sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { /* * DVD authentication commands must always be done in * PIO mode. */ xfer->c_flags |= C_FORCEPIO; } xfer->cmd = sc_xfer; xfer->databuf = sc_xfer->data; xfer->c_bcount = sc_xfer->datalen; xfer->c_start = wdc_atapi_start; xfer->c_intr = wdc_atapi_intr; xfer->c_kill_xfer = wdc_atapi_kill_xfer; s = splbio(); wdc_exec_xfer(wdc->channels[channel], xfer); #ifdef DIAGNOSTIC if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && (sc_xfer->xs_status & XS_STS_DONE) == 0) panic("wdc_atapi_scsipi_request: polled command " "not done"); #endif splx(s); return; default: /* Not supported, nothing to do. */ ; } } void wdc_atapi_start(chp, xfer) struct channel_softc *chp; struct wdc_xfer *xfer; { struct scsipi_xfer *sc_xfer = xfer->cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, sc_xfer->xs_control), DEBUG_XFERS); /* Adjust C_DMA, it may have changed if we are requesting sense */ if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { if (drvp->n_xfers <= NXFER) drvp->n_xfers++; xfer->c_flags |= C_DMA; } else { xfer->c_flags &= ~C_DMA; } /* start timeout machinery */ if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) callout_reset(&chp->ch_callout, sc_xfer->timeout * hz / 1000, wdctimeout, chp); /* Do control operations specially. */ if (drvp->state < READY) { if (drvp->state != RESET) { printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, drvp->state); panic("wdc_atapi_start: bad state"); } drvp->state = PIOMODE; wdc_atapi_ctrl(chp, xfer, 0); return; } bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, WDSD_IBM | (xfer->drive << 4)); if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { printf("wdc_atapi_start: not ready, st = %02x\n", chp->ch_status); sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return; } /* * Even with WDCS_ERR, the device should accept a command packet * Limit length to what can be stuffed into the cylinder register * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, * but not all devices do that and it's not obvious from the * ATAPI spec that that behaviour should be expected. If more * data is necessary, multiple data transfer phases will be done. */ wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 0, 0, 0, (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); /* * If there is no interrupt for CMD input, busy-wait for it (done in * the interrupt routine. If it is a polled command, call the interrupt * routine until command is done. */ if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { /* Wait for at last 400ns for status bit to be valid */ DELAY(1); if (chp->ch_flags & WDCF_DMA_WAIT) { wdc_dmawait(chp, xfer, sc_xfer->timeout); chp->ch_flags &= ~WDCF_DMA_WAIT; } wdc_atapi_intr(chp, xfer, 0); } else { chp->ch_flags |= WDCF_IRQ_WAIT; } if (sc_xfer->xs_control & XS_CTL_POLL) { while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { /* Wait for at last 400ns for status bit to be valid */ DELAY(1); wdc_atapi_intr(chp, xfer, 0); } } } int wdc_atapi_intr(chp, xfer, irq) struct channel_softc *chp; struct wdc_xfer *xfer; int irq; { struct scsipi_xfer *sc_xfer = xfer->cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; int len, phase, i, retries=0; int ire; int dma_flags = 0; void *cmd; WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); /* Is it not a transfer, but a control operation? */ if (drvp->state < READY) { printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, drvp->state); panic("wdc_atapi_intr: bad state\n"); } /* * If we missed an interrupt in a PIO transfer, reset and restart. * Don't try to continue transfer, we may have missed cycles. */ if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return 1; } /* Ack interrupt done in wait_for_unbusy */ bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, WDSD_IBM | (xfer->drive << 4)); if (wait_for_unbusy(chp, (irq == 0) ? sc_xfer->timeout : 0) != 0) { if (irq && (xfer->c_flags & C_TIMEOU) == 0) return 0; /* IRQ was not for us */ printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, xfer->c_bcount, xfer->c_skip); if (xfer->c_flags & C_DMA) { ata_dmaerr(drvp); } sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return 1; } if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); /* If we missed an IRQ and were using DMA, flag it as a DMA error */ if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { ata_dmaerr(drvp); } /* * if the request sense command was aborted, report the short sense * previously recorded, else continue normal processing */ if (xfer->c_flags & C_DMA) dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) ? WDC_DMA_READ : 0; again: len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " "ire 0x%x :", xfer->c_bcount, len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); switch (phase) { case PHASE_CMDOUT: cmd = sc_xfer->cmd; WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); /* Init the DMA channel if necessary */ if (xfer->c_flags & C_DMA) { if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, chp->channel, xfer->drive, xfer->databuf, xfer->c_bcount, dma_flags) != 0) { sc_xfer->error = XS_DRIVER_STUFFUP; break; } } /* send packet command */ /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { if (drvp->drive_flags & DRIVE_CAP32) { bus_space_write_multi_4(chp->data32iot, chp->data32ioh, 0, (u_int32_t *)cmd, sc_xfer->cmdlen >> 2); } else { bus_space_write_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)cmd, sc_xfer->cmdlen >> 1); } } else { if (drvp->drive_flags & DRIVE_CAP32) { bus_space_write_multi_stream_4(chp->data32iot, chp->data32ioh, 0, (u_int32_t *)cmd, sc_xfer->cmdlen >> 2); } else { bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)cmd, sc_xfer->cmdlen >> 1); } } /* Start the DMA channel if necessary */ if (xfer->c_flags & C_DMA) { (*chp->wdc->dma_start)(chp->wdc->dma_arg, chp->channel, xfer->drive); chp->ch_flags |= WDCF_DMA_WAIT; } if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; } return 1; case PHASE_DATAOUT: /* write data */ WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || (xfer->c_flags & C_DMA) != 0) { printf("wdc_atapi_intr: bad data phase DATAOUT\n"); if (xfer->c_flags & C_DMA) { ata_dmaerr(drvp); } sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return 1; } if (xfer->c_bcount < len) { printf("wdc_atapi_intr: warning: write only " "%d of %d requested bytes\n", xfer->c_bcount, len); if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { bus_space_write_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), xfer->c_bcount >> 1); } else { bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), xfer->c_bcount >> 1); } for (i = xfer->c_bcount; i < len; i += 2) bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, wd_data, 0); xfer->c_skip += xfer->c_bcount; xfer->c_bcount = 0; } else { if (drvp->drive_flags & DRIVE_CAP32) { if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) bus_space_write_multi_4(chp->data32iot, chp->data32ioh, 0, (u_int32_t *)((char *)xfer->databuf + xfer->c_skip), len >> 2); else bus_space_write_multi_stream_4(chp->data32iot, chp->data32ioh, wd_data, (u_int32_t *)((char *)xfer->databuf + xfer->c_skip), len >> 2); xfer->c_skip += len & 0xfffffffc; xfer->c_bcount -= len & 0xfffffffc; len = len & 0x03; } if (len > 0) { if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) bus_space_write_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), len >> 1); else bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), len >> 1); xfer->c_skip += len; xfer->c_bcount -= len; } } if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; } return 1; case PHASE_DATAIN: /* Read data */ WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || (xfer->c_flags & C_DMA) != 0) { printf("wdc_atapi_intr: bad data phase DATAIN\n"); if (xfer->c_flags & C_DMA) { ata_dmaerr(drvp); } sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return 1; } if (xfer->c_bcount < len) { printf("wdc_atapi_intr: warning: reading only " "%d of %d bytes\n", xfer->c_bcount, len); if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { bus_space_read_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), xfer->c_bcount >> 1); } else { bus_space_read_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), xfer->c_bcount >> 1); } wdcbit_bucket(chp, len - xfer->c_bcount); xfer->c_skip += xfer->c_bcount; xfer->c_bcount = 0; } else { if (drvp->drive_flags & DRIVE_CAP32) { if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) bus_space_read_multi_4(chp->data32iot, chp->data32ioh, 0, (u_int32_t *)((char *)xfer->databuf + xfer->c_skip), len >> 2); else bus_space_read_multi_stream_4(chp->data32iot, chp->data32ioh, wd_data, (u_int32_t *)((char *)xfer->databuf + xfer->c_skip), len >> 2); xfer->c_skip += len & 0xfffffffc; xfer->c_bcount -= len & 0xfffffffc; len = len & 0x03; } if (len > 0) { if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) bus_space_read_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), len >> 1); else bus_space_read_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)((char *)xfer->databuf + xfer->c_skip), len >> 1); xfer->c_skip += len; xfer->c_bcount -=len; } } if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; } return 1; case PHASE_ABORTED: case PHASE_COMPLETED: WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); /* turn off DMA channel */ if (xfer->c_flags & C_DMA) { xfer->c_bcount -= sc_xfer->datalen; } sc_xfer->resid = xfer->c_bcount; /* * Some drive occasionally set WDCS_ERR with * "ATA illegal length indication" in the error * register. If we read some data the sense is valid * anyway, so don't report the error. */ if (chp->ch_status & WDCS_ERR && ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || sc_xfer->resid == sc_xfer->datalen)) { /* save the short sense */ sc_xfer->error = XS_SHORTSENSE; sc_xfer->sense.atapi_sense = chp->ch_error; if ((sc_xfer->xs_periph->periph_quirks & PQUIRK_NOSENSE) == 0) { /* ask scsipi to send a REQUEST_SENSE */ sc_xfer->error = XS_BUSY; sc_xfer->status = SCSI_CHECK; } else if (chp->wdc->dma_status & (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { ata_dmaerr(drvp); sc_xfer->error = XS_RESET; wdc_atapi_reset(chp, xfer); return (1); } } if (xfer->c_bcount != 0) { WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " "%d after io\n", xfer->c_bcount), DEBUG_XFERS); } #ifdef DIAGNOSTIC if (xfer->c_bcount < 0) { printf("wdc_atapi_intr warning: bcount value " "is %d after io\n", xfer->c_bcount); } #endif break; default: if (++retries<500) { DELAY(100); chp->ch_status = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); chp->ch_error = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_error); goto again; } printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); if (chp->ch_status & WDCS_ERR) { sc_xfer->error = XS_SHORTSENSE; sc_xfer->sense.atapi_sense = chp->ch_error; } else { if (xfer->c_flags & C_DMA) { ata_dmaerr(drvp); } sc_xfer->error = XS_RESET; wdc_atapi_reset(chp, xfer); return (1); } } WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), DEBUG_INTR); wdc_atapi_done(chp, xfer); return (1); } int wdc_atapi_ctrl(chp, xfer, irq) struct channel_softc *chp; struct wdc_xfer *xfer; int irq; { struct scsipi_xfer *sc_xfer = xfer->cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; char *errstring = NULL; int delay = (irq == 0) ? ATAPI_DELAY : 0; /* Ack interrupt done in wait_for_unbusy */ again: WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), DEBUG_INTR | DEBUG_FUNCS); bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, WDSD_IBM | (xfer->drive << 4)); switch (drvp->state) { case PIOMODE: /* Don't try to set mode if controller can't be adjusted */ if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) goto ready; /* Also don't try if the drive didn't report its mode */ if ((drvp->drive_flags & DRIVE_MODE) == 0) goto ready; wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 0x08 | drvp->PIO_mode, WDSF_SET_MODE); drvp->state = PIOMODE_WAIT; break; case PIOMODE_WAIT: errstring = "piomode"; if (wait_for_unbusy(chp, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & WDCS_ERR) { if (chp->ch_error == WDCE_ABRT) { /* * some ATAPI drives rejects pio settings. * all we can do here is fall back to PIO 0 */ drvp->drive_flags &= ~DRIVE_MODE; drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); drvp->PIO_mode = 0; drvp->DMA_mode = 0; printf("%s:%d:%d: pio setting rejected, " "falling back to PIO mode 0\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive); chp->wdc->set_modes(chp); goto ready; } goto error; } /* fall through */ case DMAMODE: if (drvp->drive_flags & DRIVE_UDMA) { wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); } else if (drvp->drive_flags & DRIVE_DMA) { wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 0x20 | drvp->DMA_mode, WDSF_SET_MODE); } else { goto ready; } drvp->state = DMAMODE_WAIT; break; case DMAMODE_WAIT: errstring = "dmamode"; if (wait_for_unbusy(chp, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & WDCS_ERR) goto error; /* fall through */ case READY: ready: drvp->state = READY; xfer->c_intr = wdc_atapi_intr; callout_stop(&chp->ch_callout); wdc_atapi_start(chp, xfer); return 1; } if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; xfer->c_intr = wdc_atapi_ctrl; } else { goto again; } return 1; timeout: if (irq && (xfer->c_flags & C_TIMEOU) == 0) { return 0; /* IRQ was not for us */ } printf("%s:%d:%d: %s timed out\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return 1; error: printf("%s:%d:%d: %s ", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); printf("error (0x%x)\n", chp->ch_error); sc_xfer->error = XS_SHORTSENSE; sc_xfer->sense.atapi_sense = chp->ch_error; wdc_atapi_reset(chp, xfer); return 1; } void wdc_atapi_done(chp, xfer) struct channel_softc *chp; struct wdc_xfer *xfer; { struct scsipi_xfer *sc_xfer = xfer->cmd; WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, (u_int)xfer->c_flags), DEBUG_XFERS); callout_stop(&chp->ch_callout); /* remove this command from xfer queue */ wdc_free_xfer(chp, xfer); WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); scsipi_done(sc_xfer); WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", chp->ch_flags), DEBUG_XFERS); wdcstart(chp); } void wdc_atapi_reset(chp, xfer) struct channel_softc *chp; struct wdc_xfer *xfer; { struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; struct scsipi_xfer *sc_xfer = xfer->cmd; wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); drvp->state = 0; if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { printf("%s:%d:%d: reset failed\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive); sc_xfer->error = XS_SELTIMEOUT; } wdc_atapi_done(chp, xfer); return; }