/* $NetBSD: ata_wdc.c,v 1.39.2.5 2004/09/21 13:27:23 skrll Exp $ */ /* * Copyright (c) 1998, 2001, 2003 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 Manuel Bouyer. * 4. The name of the author may not 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. */ /*- * Copyright (c) 1998, 2004 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. * 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: ata_wdc.c,v 1.39.2.5 2004/09/21 13:27:23 skrll Exp $"); #ifndef ATADEBUG #define ATADEBUG #endif /* ATADEBUG */ #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 #define DEBUG_INTR 0x01 #define DEBUG_XFERS 0x02 #define DEBUG_STATUS 0x04 #define DEBUG_FUNCS 0x08 #define DEBUG_PROBE 0x10 #ifdef ATADEBUG extern int wdcdebug_wd_mask; /* inited in wd.c */ #define ATADEBUG_PRINT(args, level) \ if (wdcdebug_wd_mask & (level)) \ printf args #else #define ATADEBUG_PRINT(args, level) #endif #define ATA_DELAY 10000 /* 10s for a drive I/O */ static int wdc_ata_bio(struct ata_drive_datas*, struct ata_bio*); static void wdc_ata_bio_start(struct ata_channel *,struct ata_xfer *); static void _wdc_ata_bio_start(struct ata_channel *,struct ata_xfer *); static int wdc_ata_bio_intr(struct ata_channel *, struct ata_xfer *, int); static void wdc_ata_bio_kill_xfer(struct ata_channel *, struct ata_xfer *, int); static void wdc_ata_bio_done(struct ata_channel *, struct ata_xfer *); static 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 */ static int wdc_ata_addref(struct ata_drive_datas *); static void wdc_ata_delref(struct ata_drive_datas *); const struct ata_bustype wdc_ata_bustype = { SCSIPI_BUSTYPE_ATA, wdc_ata_bio, wdc_reset_drive, wdc_reset_channel, wdc_exec_command, ata_get_params, wdc_ata_addref, wdc_ata_delref, ata_kill_pending, }; /* * Handle block I/O operation. Return ATACMD_COMPLETE, ATACMD_QUEUED, or * ATACMD_TRY_AGAIN. Must be called at splbio(). */ static int wdc_ata_bio(struct ata_drive_datas *drvp, struct ata_bio *ata_bio) { struct ata_xfer *xfer; struct ata_channel *chp = drvp->chnl_softc; struct atac_softc *atac = chp->ch_atac; xfer = ata_get_xfer(ATAXF_NOSLEEP); if (xfer == NULL) return ATACMD_TRY_AGAIN; if (atac->atac_cap & ATAC_CAP_NOIRQ) ata_bio->flags |= ATA_POLL; if (ata_bio->flags & ATA_POLL) xfer->c_flags |= C_POLL; if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && (ata_bio->flags & ATA_SINGLE) == 0) xfer->c_flags |= C_DMA; xfer->c_drive = drvp->drive; xfer->c_cmd = ata_bio; xfer->c_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; ata_exec_xfer(chp, xfer); return (ata_bio->flags & ATA_ITSDONE) ? ATACMD_COMPLETE : ATACMD_QUEUED; } static void wdc_ata_bio_start(struct ata_channel *chp, struct ata_xfer *xfer) { struct atac_softc *atac = chp->ch_atac; struct wdc_softc *wdc = CHAN_TO_WDC(chp); struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; struct ata_bio *ata_bio = xfer->c_cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; int wait_flags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; char *errstring; ATADEBUG_PRINT(("wdc_ata_bio_start %s:%d:%d\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive), DEBUG_XFERS); /* Do control operations specially. */ if (__predict_false(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. */ /* If it's not a polled command, we need the kenrel thread */ if ((xfer->c_flags & C_POLL) == 0 && (chp->ch_flags & ATACH_TH_RUN) == 0) { chp->ch_queue->queue_freeze++; wakeup(&chp->ch_thread); return; } /* * disable interrupts, all commands here should be quick * enouth to be able to poll, and we don't go here that often */ bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT | WDCTL_IDS); if (wdc->select) wdc->select(chp, xfer->c_drive); bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, WDSD_IBM | (xfer->c_drive << 4)); DELAY(10); errstring = "wait"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY, wait_flags)) goto ctrltimeout; wdccommandshort(chp, xfer->c_drive, WDCC_RECAL); /* Wait for at last 400ns for status bit to be valid */ DELAY(1); errstring = "recal"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY, wait_flags)) goto ctrltimeout; if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto ctrlerror; /* Don't try to set modes if controller can't be adjusted */ if (atac->atac_set_modes == NULL) goto geometry; /* Also don't try if the drive didn't report its mode */ if ((drvp->drive_flags & DRIVE_MODE) == 0) goto geometry; wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 0x08 | drvp->PIO_mode, WDSF_SET_MODE); errstring = "piomode"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY, wait_flags)) goto ctrltimeout; if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto ctrlerror; 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; } errstring = "dmamode"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY, wait_flags)) goto ctrltimeout; if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto ctrlerror; geometry: if (ata_bio->flags & ATA_LBA) goto multimode; wdccommand(chp, xfer->c_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); errstring = "geometry"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY, wait_flags)) goto ctrltimeout; if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto ctrlerror; multimode: if (ata_bio->multi == 1) goto ready; wdccommand(chp, xfer->c_drive, WDCC_SETMULTI, 0, 0, 0, ata_bio->multi, 0); errstring = "setmulti"; if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY, wait_flags)) goto ctrltimeout; if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) goto ctrlerror; ready: drvp->state = READY; /* * The drive is usable now */ bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); delay(10); /* some drives need a little delay here */ } _wdc_ata_bio_start(chp, xfer); return; ctrltimeout: printf("%s:%d:%d: %s timed out\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, errstring); ata_bio->error = TIMEOUT; goto ctrldone; ctrlerror: printf("%s:%d:%d: %s ", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_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; } ctrldone: drvp->state = 0; wdc_ata_bio_done(chp, xfer); bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); return; } static void _wdc_ata_bio_start(struct ata_channel *chp, struct ata_xfer *xfer) { struct atac_softc *atac = chp->ch_atac; struct wdc_softc *wdc = CHAN_TO_WDC(chp); struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; struct ata_bio *ata_bio = xfer->c_cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; int wait_flags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; u_int16_t cyl; u_int8_t head, sect, cmd = 0; int nblks; int dma_flags = 0; ATADEBUG_PRINT(("_wdc_ata_bio_start %s:%d:%d\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive), DEBUG_INTR | DEBUG_XFERS); 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; } 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; /* Check for bad sectors and adjust transfer, if necessary. */ if ((ata_bio->lp->d_flags & D_BADSECT) != 0) { long blkdiff; int i; for (i = 0; (blkdiff = ata_bio->badsect[i]) != -1; i++) { blkdiff -= ata_bio->blkno; if (blkdiff < 0) continue; if (blkdiff == 0) { /* Replace current block of transfer. */ ata_bio->blkno = ata_bio->lp->d_secperunit - ata_bio->lp->d_nsectors - i - 1; } if (blkdiff < nblks) { /* Bad block inside transfer. */ ata_bio->flags |= ATA_SINGLE; nblks = 1; } break; } /* Transfer is okay now. */ } if (ata_bio->flags & ATA_LBA48) { sect = 0; cyl = 0; head = 0; } else 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; cmd = (ata_bio->flags & ATA_READ) ? WDCC_READDMA : WDCC_WRITEDMA; /* Init the DMA channel. */ if ((*wdc->dma_init)(wdc->dma_arg, chp->ch_channel, xfer->c_drive, (char *)xfer->c_databuf + xfer->c_skip, ata_bio->nbytes, dma_flags) != 0) { ata_bio->error = ERR_DMA; ata_bio->r_error = 0; wdc_ata_bio_done(chp, xfer); return; } /* Initiate command */ if (wdc->select) wdc->select(chp, xfer->c_drive); bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, WDSD_IBM | (xfer->c_drive << 4)); switch(wdc_wait_for_ready(chp, ATA_DELAY, wait_flags)) { case WDCWAIT_OK: break; case WDCWAIT_TOUT: goto timeout; case WDCWAIT_THR: return; } if (ata_bio->flags & ATA_LBA48) { wdccommandext(chp, xfer->c_drive, atacmd_to48(cmd), (u_int64_t)ata_bio->blkno, nblks); } else { wdccommand(chp, xfer->c_drive, cmd, cyl, head, sect, nblks, 0); } /* start the DMA channel */ (*wdc->dma_start)(wdc->dma_arg, chp->ch_channel, xfer->c_drive); chp->ch_flags |= ATACH_DMA_WAIT; /* start timeout machinery */ if ((xfer->c_flags & C_POLL) == 0) callout_reset(&chp->ch_callout, ATA_DELAY / 1000 * hz, wdctimeout, chp); /* wait for irq */ goto intr; } /* else not DMA */ 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) { cmd = (ata_bio->flags & ATA_READ) ? WDCC_READMULTI : WDCC_WRITEMULTI; } else { cmd = (ata_bio->flags & ATA_READ) ? WDCC_READ : WDCC_WRITE; } /* Initiate command! */ if (wdc->select) wdc->select(chp, xfer->c_drive); bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, WDSD_IBM | (xfer->c_drive << 4)); switch(wdc_wait_for_ready(chp, ATA_DELAY, wait_flags)) { case WDCWAIT_OK: break; case WDCWAIT_TOUT: goto timeout; case WDCWAIT_THR: return; } if (ata_bio->flags & ATA_LBA48) { wdccommandext(chp, xfer->c_drive, atacmd_to48(cmd), (u_int64_t) ata_bio->blkno, nblks); } else { wdccommand(chp, xfer->c_drive, cmd, cyl, head, sect, nblks, (ata_bio->lp->d_type == DTYPE_ST506) ? ata_bio->lp->d_precompcyl / 4 : 0); } /* start timeout machinery */ if ((xfer->c_flags & C_POLL) == 0) callout_reset(&chp->ch_callout, ATA_DELAY / 1000 * hz, wdctimeout, chp); } 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) { /* * we have to busy-wait here, we can't rely on running in * thread context. */ if (wdc_wait_for_drq(chp, ATA_DELAY, AT_POLL) != 0) { printf("%s:%d:%d: timeout waiting for DRQ, " "st=0x%02x, err=0x%02x\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, chp->ch_status, 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->dataout_pio(chp, drvp->drive_flags, (char *)xfer->c_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 |= ATACH_IRQ_WAIT; } else { /* Wait for at last 400ns for status bit to be valid */ delay(1); if (chp->ch_flags & ATACH_DMA_WAIT) { wdc_dmawait(chp, xfer, ATA_DELAY); chp->ch_flags &= ~ATACH_DMA_WAIT; } wdc_ata_bio_intr(chp, xfer, 0); if ((ata_bio->flags & ATA_ITSDONE) == 0) goto again; } return; timeout: printf("%s:%d:%d: not ready, st=0x%02x, err=0x%02x\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, chp->ch_status, chp->ch_error); if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return; } static int wdc_ata_bio_intr(struct ata_channel *chp, struct ata_xfer *xfer, int irq) { struct atac_softc *atac = chp->ch_atac; struct wdc_softc *wdc = CHAN_TO_WDC(chp); struct ata_bio *ata_bio = xfer->c_cmd; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; int drv_err; ATADEBUG_PRINT(("wdc_ata_bio_intr %s:%d:%d\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_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", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, drvp->state); panic("wdc_ata_bio_intr: bad state"); } /* * 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) { ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return 1; } /* Ack interrupt done by wdc_wait_for_unbusy */ if (wdc_wait_for_unbusy(chp, (irq == 0) ? ATA_DELAY : 0, AT_POLL) < 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", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, xfer->c_bcount, xfer->c_skip); ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return 1; } if (wdc->irqack) wdc->irqack(chp); drv_err = wdc_ata_err(drvp, ata_bio); /* If we were using DMA, Turn off the DMA channel and check for error */ if (xfer->c_flags & C_DMA) { if (ata_bio->flags & ATA_POLL) { /* * IDE drives deassert WDCS_BSY before transfer is * complete when using DMA. Polling for DRQ to deassert * is not enough DRQ is not required to be * asserted for DMA transfers, so poll for DRDY. */ if (wdcwait(chp, WDCS_DRDY | WDCS_DRQ, WDCS_DRDY, ATA_DELAY, ATA_POLL) == WDCWAIT_TOUT) { printf("%s:%d:%d: polled transfer timed out " "(st=0x%x)\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, chp->ch_status); ata_bio->error = TIMEOUT; drv_err = WDC_ATA_ERR; } } if (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%x)\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, chp->ch_status); ata_bio->error = TIMEOUT; drv_err = WDC_ATA_ERR; } } if (ata_bio->r_error & WDCE_CRC) ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0); if (drv_err != WDC_ATA_ERR) goto end; } /* 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", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive); ata_bio->error = TIMEOUT; wdc_ata_bio_done(chp, xfer); return 1; } wdc->datain_pio(chp, drvp->drive_flags, (char *)xfer->c_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; } static void wdc_ata_bio_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason) { struct ata_bio *ata_bio = xfer->c_cmd; int drive = xfer->c_drive; ata_free_xfer(chp, xfer); ata_bio->flags |= ATA_ITSDONE; switch (reason) { case KILL_GONE: ata_bio->error = ERR_NODEV; break; case KILL_RESET: ata_bio->error = ERR_RESET; break; default: printf("wdc_ata_bio_kill_xfer: unknown reason %d\n", reason); panic("wdc_ata_bio_kill_xfer"); } ata_bio->r_error = WDCE_ABRT; ATADEBUG_PRINT(("wdc_ata_done: drv_done\n"), DEBUG_XFERS); (*chp->ch_drive[drive].drv_done)(chp->ch_drive[drive].drv_softc); } static void wdc_ata_bio_done(struct ata_channel *chp, struct ata_xfer *xfer) { struct atac_softc *atac = chp->ch_atac; struct ata_bio *ata_bio = xfer->c_cmd; int drive = xfer->c_drive; ATADEBUG_PRINT(("wdc_ata_bio_done %s:%d:%d: flags 0x%x\n", atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, (u_int)xfer->c_flags), DEBUG_XFERS); callout_stop(&chp->ch_callout); /* feed back residual bcount to our caller */ ata_bio->bcount = xfer->c_bcount; /* mark controller inactive and free xfer */ chp->ch_queue->active_xfer = NULL; ata_free_xfer(chp, xfer); if (chp->ch_drive[drive].drive_flags & DRIVE_WAITDRAIN) { ata_bio->error = ERR_NODEV; chp->ch_drive[drive].drive_flags &= ~DRIVE_WAITDRAIN; wakeup(&chp->ch_queue->active_xfer); } ata_bio->flags |= ATA_ITSDONE; ATADEBUG_PRINT(("wdc_ata_done: drv_done\n"), DEBUG_XFERS); (*chp->ch_drive[drive].drv_done)(chp->ch_drive[drive].drv_softc); ATADEBUG_PRINT(("atastart from wdc_ata_done, flags 0x%x\n", chp->ch_flags), DEBUG_XFERS); atastart(chp); } static int wdc_ata_err(struct ata_drive_datas *drvp, struct ata_bio *ata_bio) { struct ata_channel *chp = drvp->chnl_softc; ata_bio->error = 0; 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 (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; } static int wdc_ata_addref(struct ata_drive_datas *drvp) { struct ata_channel *chp = drvp->chnl_softc; return (ata_addref(chp)); } static void wdc_ata_delref(struct ata_drive_datas *drvp) { struct ata_channel *chp = drvp->chnl_softc; ata_delref(chp); }