/* $OpenBSD: ata_wdc.c,v 1.39 2011/05/24 23:18:47 matthew Exp $ */ /* $NetBSD: ata_wdc.c,v 1.21 1999/08/09 09:43:11 bouyer Exp $ */ /* * Copyright (c) 1998, 2001 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. * * 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. * */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum, by Onno van der Linden and by 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. * * 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 #include #include #include #include #include #include #include #include #include #include #include #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 #ifndef WDCDEBUG_WD_MASK #define WDCDEBUG_WD_MASK 0x00 #endif int wdcdebug_wd_mask = WDCDEBUG_WD_MASK; #define WDCDEBUG_PRINT(args, level) do { \ if ((wdcdebug_wd_mask & (level)) != 0) \ printf args; \ } while (0) #else #define WDCDEBUG_PRINT(args, level) #endif #define ATA_DELAY 45000 /* 45s for a drive I/O */ void wdc_ata_bio_start(struct channel_softc *, struct wdc_xfer *); void _wdc_ata_bio_start(struct channel_softc *, struct wdc_xfer *); int wdc_ata_bio_intr(struct channel_softc *, struct wdc_xfer *, int); void wdc_ata_bio_kill_xfer(struct channel_softc *, struct wdc_xfer *); void wdc_ata_bio_done(struct channel_softc *, struct wdc_xfer *); int wdc_ata_ctrl_intr(struct channel_softc *, struct wdc_xfer *, int); int wdc_ata_err(struct ata_drive_datas *, struct ata_bio *); #define WDC_ATA_NOERR 0x00 /* Drive doesn't report an error */ #define WDC_ATA_RECOV 0x01 /* There was a recovered error */ #define WDC_ATA_ERR 0x02 /* Drive reports an error */ int wd_hibernate_io(dev_t dev, daddr_t blkno, caddr_t addr, size_t size, int wr, void *page) { struct { struct wd_softc wd; struct wdc_xfer xfer; struct channel_softc chp; } *my = page; struct wd_softc *real_wd, *wd = &my->wd; struct wdc_xfer *xfer = &my->xfer; struct channel_softc *chp = &my->chp; struct ata_bio *ata_bio; extern struct cfdriver wd_cd; real_wd = (struct wd_softc *)disk_lookup(&wd_cd, DISKUNIT(dev)); if (real_wd == NULL) return (ENODEV); /* * Craft a fake set of softc and related structures * which we think the driver modifies. Some of these will * have pointers which reach to unsafe places, but.. */ bcopy(real_wd->drvp->chnl_softc, &my->chp, sizeof my->chp); chp->ch_drive[0].chnl_softc = chp; chp->ch_drive[1].chnl_softc = chp; bcopy(real_wd, &my->wd, sizeof my->wd); ata_bio = &wd->sc_wdc_bio; ata_bio->wd = wd; /* fixup ata_bio->wd */ wd->drvp = &chp->ch_drive[real_wd->drvp->drive]; /* Fill the request and submit it */ wd->sc_wdc_bio.blkno = blkno; wd->sc_wdc_bio.flags = ATA_POLL | ATA_LBA48; if (wr == 0) wd->sc_wdc_bio.flags |= ATA_READ; wd->sc_wdc_bio.bcount = size; wd->sc_wdc_bio.databuf = addr; wd->sc_wdc_bio.wd = wd; bzero(&my->xfer, sizeof my->xfer); xfer->c_flags |= C_PRIVATEXFER; /* Our xfer is totally private */ xfer->c_flags |= C_POLL; xfer->drive = wd->drvp->drive; xfer->cmd = ata_bio; xfer->databuf = ata_bio->databuf; xfer->c_bcount = ata_bio->bcount; xfer->c_start = wdc_ata_bio_start; xfer->c_intr = wdc_ata_bio_intr; xfer->c_kill_xfer = wdc_ata_bio_kill_xfer; wdc_exec_xfer(chp, xfer); return (ata_bio->flags & ATA_ITSDONE) ? 0 : 1; } /* * Handle block I/O operation. Return WDC_COMPLETE, WDC_QUEUED, or * WDC_TRY_AGAIN. Must be called at splbio(). */ int wdc_ata_bio(struct ata_drive_datas *drvp, struct ata_bio *ata_bio) { struct wdc_xfer *xfer; struct channel_softc *chp = drvp->chnl_softc; xfer = wdc_get_xfer(WDC_NOSLEEP); if (xfer == NULL) return WDC_TRY_AGAIN; if (ata_bio->flags & ATA_POLL) xfer->c_flags |= C_POLL; if (!(ata_bio->flags & ATA_POLL) && (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && (ata_bio->flags & ATA_SINGLE) == 0 && (ata_bio->bcount > 512 || (chp->wdc->quirks & WDC_QUIRK_NOSHORTDMA) == 0)) xfer->c_flags |= C_DMA; xfer->drive = drvp->drive; xfer->cmd = ata_bio; xfer->databuf = ata_bio->databuf; xfer->c_bcount = ata_bio->bcount; xfer->c_start = wdc_ata_bio_start; xfer->c_intr = wdc_ata_bio_intr; xfer->c_kill_xfer = wdc_ata_bio_kill_xfer; wdc_exec_xfer(chp, xfer); return (ata_bio->flags & ATA_ITSDONE) ? WDC_COMPLETE : WDC_QUEUED; } void wdc_ata_bio_start(struct channel_softc *chp, struct wdc_xfer *xfer) { struct ata_bio *ata_bio = xfer->cmd; WDCDEBUG_PRINT(("wdc_ata_bio_start %s:%d:%d\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), DEBUG_XFERS); /* start timeout machinery */ if ((ata_bio->flags & ATA_POLL) == 0) timeout_add_msec(&chp->ch_timo, ATA_DELAY); _wdc_ata_bio_start(chp, xfer); } void _wdc_ata_bio_start(struct channel_softc *chp, struct wdc_xfer *xfer) { struct ata_bio *ata_bio = xfer->cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; u_int16_t cyl; u_int8_t head, sect, cmd = 0; int nblks; int ata_delay; int error, dma_flags = 0; WDCDEBUG_PRINT(("_wdc_ata_bio_start %s:%d:%d\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), DEBUG_INTR | DEBUG_XFERS); /* Do control operations specially. */ if (drvp->state < READY) { /* * Actually, we want to be careful not to mess with the control * state if the device is currently busy, but we can assume * that we never get to this point if that's the case. */ /* at this point, we should only be in RECAL state */ if (drvp->state != RECAL) { printf("%s:%d:%d: bad state %d in _wdc_ata_bio_start\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, drvp->state); panic("_wdc_ata_bio_start: bad state"); } xfer->c_intr = wdc_ata_ctrl_intr; wdc_set_drive(chp, xfer->drive); if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY) != 0) goto timeout; wdccommandshort(chp, xfer->drive, WDCC_RECAL); drvp->state = RECAL_WAIT; if ((ata_bio->flags & ATA_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; } else { /* Wait for at last 400ns for status bit to be valid */ DELAY(1); wdc_ata_ctrl_intr(chp, xfer, 0); } return; } if (xfer->c_flags & C_DMA) { if (drvp->n_xfers <= NXFER) drvp->n_xfers++; dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; if (ata_bio->flags & ATA_LBA48) dma_flags |= WDC_DMA_LBA48; } if (ata_bio->flags & ATA_SINGLE) ata_delay = ATA_DELAY; else ata_delay = ATA_DELAY; again: /* * * When starting a multi-sector transfer, or doing single-sector * transfers... */ if (xfer->c_skip == 0 || (ata_bio->flags & ATA_SINGLE) != 0) { if (ata_bio->flags & ATA_SINGLE) nblks = 1; else nblks = xfer->c_bcount / ata_bio->lp->d_secsize; if (ata_bio->flags & ATA_LBA) { sect = (ata_bio->blkno >> 0) & 0xff; cyl = (ata_bio->blkno >> 8) & 0xffff; head = (ata_bio->blkno >> 24) & 0x0f; head |= WDSD_LBA; } else { int blkno = ata_bio->blkno; sect = blkno % ata_bio->lp->d_nsectors; sect++; /* Sectors begin with 1, not 0. */ blkno /= ata_bio->lp->d_nsectors; head = blkno % ata_bio->lp->d_ntracks; blkno /= ata_bio->lp->d_ntracks; cyl = blkno; head |= WDSD_CHS; } if (xfer->c_flags & C_DMA) { ata_bio->nblks = nblks; ata_bio->nbytes = xfer->c_bcount; if (ata_bio->flags & ATA_LBA48) cmd = (ata_bio->flags & ATA_READ) ? WDCC_READDMA_EXT : WDCC_WRITEDMA_EXT; else cmd = (ata_bio->flags & ATA_READ) ? WDCC_READDMA : WDCC_WRITEDMA; /* Init the DMA channel. */ error = (*chp->wdc->dma_init)(chp->wdc->dma_arg, chp->channel, xfer->drive, (char *)xfer->databuf + xfer->c_skip, ata_bio->nbytes, dma_flags); if (error) { if (error == EINVAL) { /* * We can't do DMA on this transfer * for some reason. Fall back to * PIO. */ xfer->c_flags &= ~C_DMA; error = 0; goto do_pio; } ata_bio->error = ERR_DMA; ata_bio->r_error = 0; wdc_ata_bio_done(chp, xfer); return; } /* Initiate command */ wdc_set_drive(chp, xfer->drive); if (wait_for_ready(chp, ata_delay) < 0) goto timeout; if (ata_bio->flags & ATA_LBA48) { wdccommandext(chp, xfer->drive, cmd, (u_int64_t)ata_bio->blkno, nblks); } else { wdccommand(chp, xfer->drive, cmd, cyl, head, sect, nblks, 0); } /* start the DMA channel */ (*chp->wdc->dma_start)(chp->wdc->dma_arg, chp->channel, xfer->drive); chp->ch_flags |= WDCF_DMA_WAIT; /* wait for irq */ goto intr; } /* else not DMA */ do_pio: ata_bio->nblks = min(nblks, ata_bio->multi); ata_bio->nbytes = ata_bio->nblks * ata_bio->lp->d_secsize; KASSERT(nblks == 1 || (ata_bio->flags & ATA_SINGLE) == 0); if (ata_bio->nblks > 1) { if (ata_bio->flags & ATA_LBA48) cmd = (ata_bio->flags & ATA_READ) ? WDCC_READMULTI_EXT : WDCC_WRITEMULTI_EXT; else cmd = (ata_bio->flags & ATA_READ) ? WDCC_READMULTI : WDCC_WRITEMULTI; } else { if (ata_bio->flags & ATA_LBA48) cmd = (ata_bio->flags & ATA_READ) ? WDCC_READ_EXT : WDCC_WRITE_EXT; else cmd = (ata_bio->flags & ATA_READ) ? WDCC_READ : WDCC_WRITE; } /* Initiate command! */ wdc_set_drive(chp, xfer->drive); if (wait_for_ready(chp, ata_delay) < 0) goto timeout; if (ata_bio->flags & ATA_LBA48) { wdccommandext(chp, xfer->drive, cmd, (u_int64_t)ata_bio->blkno, nblks); } else { wdccommand(chp, xfer->drive, cmd, cyl, head, sect, nblks, (ata_bio->lp->d_type == DTYPE_ST506) ? ata_bio->lp->d_precompcyl / 4 : 0); } } else if (ata_bio->nblks > 1) { /* The number of blocks in the last stretch may be smaller. */ nblks = xfer->c_bcount / ata_bio->lp->d_secsize; if (ata_bio->nblks > nblks) { ata_bio->nblks = nblks; ata_bio->nbytes = xfer->c_bcount; } } /* If this was a write and not using DMA, push the data. */ if ((ata_bio->flags & ATA_READ) == 0) { if (wait_for_drq(chp, ata_delay) != 0) { printf("%s:%d:%d: timeout waiting for DRQ, " "st=0x%b, err=0x%02x\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, chp->ch_status, WDCS_BITS, chp->ch_error); if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return; } if (wdc_ata_err(drvp, ata_bio) == WDC_ATA_ERR) { wdc_ata_bio_done(chp, xfer); return; } wdc_output_bytes(drvp, (char *)xfer->databuf + xfer->c_skip, ata_bio->nbytes); } intr: /* Wait for IRQ (either real or polled) */ if ((ata_bio->flags & ATA_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; } else { /* Wait for at last 400ns for status bit to be valid */ delay(1); if (chp->ch_flags & WDCF_DMA_WAIT) { wdc_dmawait(chp, xfer, ATA_DELAY); chp->ch_flags &= ~WDCF_DMA_WAIT; } wdc_ata_bio_intr(chp, xfer, 0); if ((ata_bio->flags & ATA_ITSDONE) == 0) goto again; } return; timeout: if (chp->ch_status == 0xff) return; printf("%s:%d:%d: not ready, st=0x%b, err=0x%02x\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, chp->ch_status, WDCS_BITS, chp->ch_error); if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return; } int wdc_ata_bio_intr(struct channel_softc *chp, struct wdc_xfer *xfer, int irq) { struct ata_bio *ata_bio = xfer->cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; int drv_err; WDCDEBUG_PRINT(("wdc_ata_bio_intr %s:%d:%d\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), DEBUG_INTR | DEBUG_XFERS); /* Is it not a transfer, but a control operation? */ if (drvp->state < READY) { printf("%s:%d:%d: bad state %d in wdc_ata_bio_intr\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, drvp->state); panic("wdc_ata_bio_intr: bad state"); } /* * reset on timeout. This will cause extra resets in the case * of occasional lost interrupts */ if (xfer->c_flags & C_TIMEOU) goto timeout; /* Ack interrupt done by wait_for_unbusy */ if (wait_for_unbusy(chp, (irq == 0) ? ATA_DELAY : 0) < 0) { if (irq) 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); goto timeout; } if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); drv_err = wdc_ata_err(drvp, ata_bio); if (xfer->c_flags & C_DMA) { if (chp->wdc->dma_status != 0) { if (drv_err != WDC_ATA_ERR) { ata_bio->error = ERR_DMA; drv_err = WDC_ATA_ERR; } } if (chp->ch_status & WDCS_DRQ) { if (drv_err != WDC_ATA_ERR) { printf("%s:%d:%d: intr with DRQ (st=0x%b)\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, chp->ch_status, WDCS_BITS); ata_bio->error = TIMEOUT; drv_err = WDC_ATA_ERR; } } if (drv_err != WDC_ATA_ERR) goto end; ata_dmaerr(drvp); } /* if we had an error, end */ if (drv_err == WDC_ATA_ERR) { wdc_ata_bio_done(chp, xfer); return 1; } /* If this was a read and not using DMA, fetch the data. */ if ((ata_bio->flags & ATA_READ) != 0) { if ((chp->ch_status & WDCS_DRQ) != WDCS_DRQ) { printf("%s:%d:%d: read intr before drq\n", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive); ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return 1; } wdc_input_bytes(drvp, (char *)xfer->databuf + xfer->c_skip, ata_bio->nbytes); } end: ata_bio->blkno += ata_bio->nblks; ata_bio->blkdone += ata_bio->nblks; xfer->c_skip += ata_bio->nbytes; xfer->c_bcount -= ata_bio->nbytes; /* See if this transfer is complete. */ if (xfer->c_bcount > 0) { if ((ata_bio->flags & ATA_POLL) == 0) { /* Start the next operation */ _wdc_ata_bio_start(chp, xfer); } else { /* Let _wdc_ata_bio_start do the loop */ return 1; } } else { /* Done with this transfer */ ata_bio->error = NOERROR; wdc_ata_bio_done(chp, xfer); } return 1; timeout: if (xfer->c_flags & C_DMA) ata_dmaerr(drvp); ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return 1; } void wdc_ata_bio_kill_xfer(struct channel_softc *chp, struct wdc_xfer *xfer) { struct ata_bio *ata_bio = xfer->cmd; timeout_del(&chp->ch_timo); /* remove this command from xfer queue */ wdc_free_xfer(chp, xfer); ata_bio->flags |= ATA_ITSDONE; ata_bio->error = ERR_NODEV; ata_bio->r_error = WDCE_ABRT; if ((ata_bio->flags & ATA_POLL) == 0) { WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_XFERS); wddone(ata_bio->wd); } } void wdc_ata_bio_done(struct channel_softc *chp, struct wdc_xfer *xfer) { struct ata_bio *ata_bio = xfer->cmd; WDCDEBUG_PRINT(("wdc_ata_bio_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); if ((xfer->c_flags & C_PRIVATEXFER) == 0) timeout_del(&chp->ch_timo); /* feed back residual bcount to our caller */ ata_bio->bcount = xfer->c_bcount; /* remove this command from xfer queue */ wdc_free_xfer(chp, xfer); ata_bio->flags |= ATA_ITSDONE; if ((ata_bio->flags & ATA_POLL) == 0) { WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_XFERS); wddone(ata_bio->wd); } WDCDEBUG_PRINT(("wdcstart from wdc_ata_done, flags 0x%x\n", chp->ch_flags), DEBUG_XFERS); wdcstart(chp); } /* * Implement operations needed before read/write. */ int wdc_ata_ctrl_intr(struct channel_softc *chp, struct wdc_xfer *xfer, int irq) { struct ata_bio *ata_bio = xfer->cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; char *errstring = NULL; int delay = (irq == 0) ? ATA_DELAY : 0; WDCDEBUG_PRINT(("wdc_ata_ctrl_intr: state %d\n", drvp->state), DEBUG_FUNCS); again: switch (drvp->state) { case RECAL: /* Should not be in this state here */ panic("wdc_ata_ctrl_intr: state==RECAL"); break; case RECAL_WAIT: errstring = "recal"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto error; /* FALLTHROUGH */ case PIOMODE: /* Don't try to set modes if controller can't be adjusted */ if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) goto geometry; /* Also don't try if the drive didn't report its mode */ if ((drvp->drive_flags & DRIVE_MODE) == 0) goto geometry; /* SET FEATURES 0x08 is only for PIO mode > 2 */ if (drvp->PIO_mode <= 2) goto geometry; 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 (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto error; /* FALLTHROUGH */ 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 geometry; } drvp->state = DMAMODE_WAIT; break; case DMAMODE_WAIT: errstring = "dmamode"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto error; /* FALLTHROUGH */ case GEOMETRY: geometry: if (ata_bio->flags & ATA_LBA) goto multimode; wdccommand(chp, xfer->drive, WDCC_IDP, ata_bio->lp->d_ncylinders, ata_bio->lp->d_ntracks - 1, 0, ata_bio->lp->d_nsectors, (ata_bio->lp->d_type == DTYPE_ST506) ? ata_bio->lp->d_precompcyl / 4 : 0); drvp->state = GEOMETRY_WAIT; break; case GEOMETRY_WAIT: errstring = "geometry"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto error; /* FALLTHROUGH */ case MULTIMODE: multimode: if (ata_bio->multi == 1) goto ready; wdccommand(chp, xfer->drive, WDCC_SETMULTI, 0, 0, 0, ata_bio->multi, 0); drvp->state = MULTIMODE_WAIT; break; case MULTIMODE_WAIT: errstring = "setmulti"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) goto timeout; if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) chp->wdc->irqack(chp); if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto error; /* FALLTHROUGH */ case READY: ready: drvp->state = READY; /* * The drive is usable now */ xfer->c_intr = wdc_ata_bio_intr; _wdc_ata_bio_start(chp, xfer); return 1; } if ((ata_bio->flags & ATA_POLL) == 0) { chp->ch_flags |= WDCF_IRQ_WAIT; } 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); ata_bio->error = TIMEOUT; drvp->state = 0; wdc_ata_bio_done(chp, xfer); return 0; error: printf("%s:%d:%d: %s ", chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); if (chp->ch_status & WDCS_DWF) { printf("drive fault\n"); ata_bio->error = ERR_DF; } else { printf("error (%x)\n", chp->ch_error); ata_bio->r_error = chp->ch_error; ata_bio->error = ERROR; } drvp->state = 0; wdc_ata_bio_done(chp, xfer); return 1; } int wdc_ata_err(struct ata_drive_datas *drvp, struct ata_bio *ata_bio) { struct channel_softc *chp = drvp->chnl_softc; ata_bio->error = 0; if (chp->ch_status == 0xff) { ata_bio->error = ERR_NODEV; return WDC_ATA_ERR; } if (chp->ch_status & WDCS_BSY) { ata_bio->error = TIMEOUT; return WDC_ATA_ERR; } if (chp->ch_status & WDCS_DWF) { ata_bio->error = ERR_DF; return WDC_ATA_ERR; } if (chp->ch_status & WDCS_ERR) { ata_bio->error = ERROR; ata_bio->r_error = chp->ch_error; if (drvp->drive_flags & DRIVE_UDMA && (ata_bio->r_error & WDCE_CRC)) { /* * Record the CRC error, to avoid downgrading to * multiword DMA */ drvp->drive_flags |= DRIVE_DMAERR; } if (ata_bio->r_error & (WDCE_BBK | WDCE_UNC | WDCE_IDNF | WDCE_ABRT | WDCE_TK0NF | WDCE_AMNF)) return WDC_ATA_ERR; return WDC_ATA_NOERR; } if (chp->ch_status & WDCS_CORR) ata_bio->flags |= ATA_CORR; return WDC_ATA_NOERR; } #if 0 int wdc_ata_addref(drvp) struct ata_drive_datas *drvp; { struct channel_softc *chp = drvp->chnl_softc; return (wdc_addref(chp)); } void wdc_ata_delref(drvp) struct ata_drive_datas *drvp; { struct channel_softc *chp = drvp->chnl_softc; wdc_delref(chp); } #endif