/* $NetBSD: atapi_wdc.c,v 1.1.2.7 1998/09/20 13:16:17 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 REGENTS 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 REGENTS 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. * */ #define 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 #include #include #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 = DEBUG_PROBE; #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 */ 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 wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *)); void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); int wdc_atapi_send_cmd __P((struct scsipi_xfer *sc_xfer)); #define MAX_SIZE MAXPHYS static struct scsipi_adapter wdc_switch = { wdc_atapi_send_cmd, wdc_atapi_minphys, 0, 0 }; void wdc_atapibus_attach(chp) struct channel_softc *chp; { struct wdc_softc *wdc = chp->wdc; int channel = chp->channel; struct ata_atapi_attach aa_link; memset(&aa_link, 0, sizeof(struct ata_atapi_attach)); aa_link.aa_type = T_ATAPI; aa_link.aa_channel = channel; aa_link.aa_openings = 1; aa_link.aa_drv_data = chp->ch_drive; /* pass the whole array */ aa_link.aa_bus_private = &wdc_switch; (void)config_found(&wdc->sc_dev, (void *)&aa_link, atapi_print); } void wdc_atapi_minphys (struct buf *bp) { if(bp->b_bcount > MAX_SIZE) bp->b_bcount = MAX_SIZE; minphys(bp); } int wdc_atapi_get_params(ab_link, drive, flags, id) struct scsipi_link *ab_link; u_int8_t drive; int flags; struct ataparams *id; { struct wdc_softc *wdc = (void*)ab_link->adapter_softc; struct channel_softc *chp = &wdc->channels[ab_link->scsipi_atapi.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 COMPLETE; } int wdc_atapi_send_cmd(sc_xfer) struct scsipi_xfer *sc_xfer; { struct scsipi_link *sc_link = sc_xfer->sc_link; struct wdc_softc *wdc = (void*)sc_link->adapter_softc; struct wdc_xfer *xfer; int flags = sc_xfer->flags; int s, ret; WDCDEBUG_PRINT(("wdc_atapi_send_cmd\n"), DEBUG_FUNCS); xfer = wdc_get_xfer(flags & SCSI_NOSLEEP ? WDC_NOSLEEP : WDC_CANSLEEP); if (xfer == NULL) { return TRY_AGAIN_LATER; } if (sc_xfer->flags & SCSI_POLL) xfer->c_flags |= C_POLL; xfer->drive = sc_xfer->sc_link->scsipi_atapi.drive; xfer->channel = sc_xfer->sc_link->scsipi_atapi.channel; xfer->c_flags |= C_ATAPI; 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; s = splbio(); wdc_exec_xfer(&wdc->channels[xfer->channel], xfer); #ifdef DIAGNOSTIC if ((sc_xfer->flags & SCSI_POLL) != 0 && (sc_xfer->flags & ITSDONE) == 0) panic("wdc_atapi_send_cmd: polled command not done"); #endif ret = (sc_xfer->flags & ITSDONE) ? COMPLETE : SUCCESSFULLY_QUEUED; splx(s); return ret; } 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, scsi flags 0x%x \n",sc_xfer->flags), DEBUG_FUNCS); /* Do control operations specially. */ if (drvp->state < READY) { if (drvp->state != PIOMODE) { 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"); } wdc_atapi_ctrl(chp, xfer); 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); 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, sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 0, 0, 0, (chp->ch_drive[xfer->drive].drive_flags & (DRIVE_DMA | DRIVE_UDMA)) ? 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->sc_link->scsipi_atapi.cap & 0x0300) != ACAP_DRQ_INTR || sc_xfer->flags & SCSI_POLL) { /* Wait for at last 400ns for status bit to be valid */ delay(1); if (wdc_atapi_intr(chp, xfer) == 0) { wdc_atapi_reset(chp, xfer); return; } } if (sc_xfer->flags & SCSI_POLL) { while ((sc_xfer->flags & ITSDONE) == 0) { /* Wait for at last 400ns for status bit to be valid */ delay(1); if (wdc_atapi_intr(chp, xfer) == 0) { sc_xfer->error = XS_SELTIMEOUT; /* do we know more ? */ wdc_atapi_done(chp, xfer); return; } } } } int wdc_atapi_intr(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]; int len, phase, i, retries=0; int ire, dma_err = 0; int dma_flags = 0; WDCDEBUG_PRINT(("wdc_atapi_intr\n"), 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"); } /* 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, sc_xfer->timeout) != 0) { 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); wdc_atapi_reset(chp, xfer); return 1; } /* Error here only if the command is aborted */ if ((chp->ch_status & WDCS_ERR) != 0 && (chp->ch_error & WDCE_ABRT) != 0) { sc_xfer->error = XS_SENSE; sc_xfer->sense.atapi_sense = chp->ch_error; WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done(), " "sense 0x%x\n", sc_xfer->sense.atapi_sense), DEBUG_INTR); wdc_atapi_done(chp, xfer); return 1; } if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) { dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? WDC_DMA_READ : 0; dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 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: WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); /* Init the DMA channel if necessary */ if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) { if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, chp->channel, xfer->drive, xfer->databuf, sc_xfer->datalen, 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->cmd_iot, chp->cmd_ioh, wd_data, (u_int32_t *)sc_xfer->cmd, sc_xfer->cmdlen >> 2); } else { bus_space_write_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)sc_xfer->cmd, sc_xfer->cmdlen >> 1); } } else { if (drvp->drive_flags & DRIVE_CAP32) { bus_space_write_multi_stream_4(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int32_t *)sc_xfer->cmd, sc_xfer->cmdlen >> 2); } else { bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)sc_xfer->cmd, sc_xfer->cmdlen >> 1); } } /* Start the DMA channel if necessary */ if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) { (*chp->wdc->dma_start)(chp->wdc->dma_arg, chp->channel, xfer->drive, dma_flags); } if ((sc_xfer->flags & SCSI_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); } return 1; case PHASE_DATAOUT: /* write data */ WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA))) { printf("wdc_atapi_intr: bad data phase DATAOUT"); if (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) { printf(", falling back to PIO\n"); drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); } 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, xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); } else { bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, 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->cmd_iot, chp->cmd_ioh, wd_data, xfer->databuf + xfer->c_skip, len >> 2); else bus_space_write_multi_stream_4(chp->cmd_iot, chp->cmd_ioh, wd_data, 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, xfer->databuf + xfer->c_skip, len >> 1); else bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, xfer->databuf + xfer->c_skip, len >> 1); xfer->c_skip += len; xfer->c_bcount -= len; } } if ((sc_xfer->flags & SCSI_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); } return 1; case PHASE_DATAIN: /* Read data */ WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); if ((sc_xfer->flags & SCSI_DATA_IN) == 0 || (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA))) { printf("wdc_atapi_intr: bad data phase DATAIN"); if (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) { printf(", falling back to PIO\n"); drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); } 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, xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); } else { bus_space_read_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, 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->cmd_iot, chp->cmd_ioh, wd_data, xfer->databuf + xfer->c_skip, len >> 2); else bus_space_read_multi_stream_4(chp->cmd_iot, chp->cmd_ioh, wd_data, 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, xfer->databuf + xfer->c_skip, len >> 1); else bus_space_read_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, xfer->databuf + xfer->c_skip, len >> 1); xfer->c_skip += len; xfer->c_bcount -=len; } } if ((sc_xfer->flags & SCSI_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); } return 1; case PHASE_ABORTED: case PHASE_COMPLETED: WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); /* turn off DMA channel */ if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) { dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, chp->channel, xfer->drive, dma_flags); xfer->c_bcount -= sc_xfer->datalen; } if (chp->ch_status & WDCS_ERR) { sc_xfer->error = XS_SENSE; sc_xfer->sense.atapi_sense = chp->ch_error; } else if (dma_err < 0) { sc_xfer->error = XS_DRIVER_STUFFUP; } #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_SENSE; sc_xfer->sense.atapi_sense = chp->ch_error; } else { sc_xfer->error = XS_DRIVER_STUFFUP; } } WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), sense 0x%x\n", sc_xfer->sense.atapi_sense), DEBUG_INTR); wdc_atapi_done(chp, xfer); return (1); } int wdc_atapi_ctrl(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]; char *errstring = NULL; WDCDEBUG_PRINT(("wdc_atapi_ctrl state %d\n", drvp->state), DEBUG_INTR); /* Ack interrupt done in wait_for_unbusy */ again: 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_PIO) == 0) goto dmamode; /* * if mode is < 3, it is unknown. Assume the defaults are * good. */ if (drvp->PIO_mode < 3) goto dmamode; 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, ATAPI_DELAY)) goto timeout; if (chp->ch_status & WDCS_ERR) goto error; /* fall through */ case DMAMODE: 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, ATAPI_DELAY)) goto timeout; if (chp->ch_status & WDCS_ERR) goto error; /* fall through */ case READY: ready: drvp->state = READY; xfer->c_intr = wdc_atapi_intr; wdc_atapi_start(chp, xfer); return 1; } if ((sc_xfer->flags & SCSI_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; xfer->c_intr = wdc_atapi_ctrl; timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); } else { goto again; } return 1; timeout: if ((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); 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 (%x)\n", chp->ch_error); sc_xfer->error = XS_SENSE; sc_xfer->sense.atapi_sense = chp->ch_error; drvp->state = 0; wdc_atapi_done(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; struct wdc_softc *wdc = chp->wdc; int need_done = xfer->c_flags & C_NEEDDONE; WDCDEBUG_PRINT(("wdc_atapi_done: flags 0x%x\n", (u_int)xfer->c_flags), DEBUG_FUNCS); sc_xfer->resid = xfer->c_bcount; /* remove this command from xfer queue */ xfer->c_skip = 0; wdc_free_xfer(chp, xfer); sc_xfer->flags |= ITSDONE; if (need_done) { WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_FUNCS); scsipi_done(sc_xfer); } WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", chp->ch_flags), DEBUG_FUNCS); wdcstart(wdc, chp->channel); } 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; } sc_xfer->error = XS_TIMEOUT; wdc_atapi_done(chp, xfer); return; }