/* $OpenBSD: atapiscsi.c,v 1.8 1999/07/25 07:09:19 csapuntz Exp $ */ /* * This code is derived from code with the copyright below. */ /* * Copyright (c) 1996, 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 Manuel Bouyer. * 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. * */ #include #include #include #include #include #include #include #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 #define WDCDEBUG #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 = 0x0; #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)); 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 *)); int wdc_atapi_send_cmd __P((struct scsi_xfer *sc_xfer)); #define MAX_SIZE MAXPHYS struct atapiscsi_softc; struct atapiscsi_xfer; static int atapiscsi_match __P((struct device *, void *, void *)); static void atapiscsi_attach __P((struct device *, struct device *, void *)); int wdc_atapi_get_params __P((struct atapiscsi_softc *, u_int8_t, int, struct ataparams *)); #define ATAPI_TO_SCSI_SENSE(sc, atapi_error) \ (sc)->error_code = XS_SHORTSENSE; (sc)->flags = (atapi_error) >> 4; struct atapiscsi_softc { struct device sc_dev; struct scsi_link sc_adapterlink; struct wdc_softc *sc_wdc; u_int8_t sc_channel; int valid[2]; struct ata_drive_datas *sc_drvs; }; static struct scsi_adapter atapiscsi_switch = { wdc_atapi_send_cmd, wdc_atapi_minphys, NULL, NULL, }; static struct scsi_device atapiscsi_dev = { NULL, NULL, NULL, NULL, }; /* Inital version shares bus_link structure so it can easily be "attached to current" wdc driver */ struct cfattach atapiscsi_ca = { sizeof(struct atapiscsi_softc), atapiscsi_match, atapiscsi_attach }; struct cfdriver atapiscsi_cd = { NULL, "atapiscsi", DV_DULL }; int atapiscsi_match(parent, match, aux) struct device *parent; void *match, *aux; { struct ata_atapi_attach *aa_link = aux; struct cfdata *cf = match; if (aa_link == NULL) return (0); if (aa_link->aa_type != T_ATAPI) return (0); if (cf->cf_loc[0] != aa_link->aa_channel && cf->cf_loc[0] != -1) return (0); return (1); } void atapiscsi_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct atapiscsi_softc *as = (struct atapiscsi_softc *)self; struct ata_atapi_attach *aa_link = aux; struct ataparams ids; struct ataparams *id = &ids; int drive; printf("\n"); /* Ouch */ as->valid[0] = as->valid[1] = 0; as->sc_wdc = (struct wdc_softc *)parent; as->sc_drvs = aa_link->aa_drv_data; as->sc_channel = aa_link->aa_channel; as->sc_adapterlink.adapter_softc = as; as->sc_adapterlink.adapter_target = 7; as->sc_adapterlink.adapter_buswidth = 2; as->sc_adapterlink.adapter = &atapiscsi_switch; as->sc_adapterlink.device = &atapiscsi_dev; as->sc_adapterlink.openings = 1; as->sc_adapterlink.flags = SDEV_ATAPI; as->sc_adapterlink.quirks = SDEV_NOLUNS; as->sc_wdc->channels[as->sc_channel]->ch_as = as; for (drive = 0; drive < 2 ; drive++ ) { struct ata_drive_datas *drvp = &as->sc_drvs[drive]; if ((drvp->drive_flags & DRIVE_ATAPI) && (wdc_atapi_get_params(as, drive, SCSI_POLL|SCSI_NOSLEEP, id) == COMPLETE)) { as->valid[drive] = 1; /* This is wrong. All the devices on the ATAPI bus will be called atapibus by the IDE side of the driver. */ drvp->drv_softc = (struct device *)as; wdc_probe_caps(drvp); if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) drvp->atapi_cap |= ACAP_LEN; drvp->atapi_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); } } } void wdc_atapibus_final_attach(chp) struct channel_softc *chp; { if (chp->ch_as) config_found((struct device *)chp->ch_as, &chp->ch_as->sc_adapterlink, scsiprint); } 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; /* * Fill in the adapter. */ 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 */ #if 0 aa_link.aa_bus_private = &wdc->sc_atapi_adapter; #endif (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); } /* * The scsi_cmd interface works as follows: * */ int wdc_atapi_get_params(as, drive, flags, id) struct atapiscsi_softc *as; u_int8_t drive; int flags; struct ataparams *id; { struct wdc_softc *wdc = as->sc_wdc; struct channel_softc *chp = wdc->channels[as->sc_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 scsi_xfer *sc_xfer; { struct atapiscsi_softc *as = sc_xfer->sc_link->adapter_softc; struct wdc_softc *wdc = as->sc_wdc; struct wdc_xfer *xfer; int flags = sc_xfer->flags; int channel = as->sc_channel; int drive = sc_xfer->sc_link->target; int s, ret; WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d\n", wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); if (drive > 1 || !as->valid[drive]) { sc_xfer->error = XS_DRIVER_STUFFUP; return COMPLETE; } 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 = drive; 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[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 scsi_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->flags), 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_SENSE))) xfer->c_flags |= C_DMA; else xfer->c_flags &= ~C_DMA; /* Do control operations specially. */ if (drvp->state < READY) { if (drvp->state != IDENTIFY) { 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, 0); return; } if (wdc_select_drive(chp, xfer->drive, 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, sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 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 (((drvp->atapi_cap & ATAPI_CFG_DRQ_MASK) != ATAPI_CFG_IRQ_DRQ) || (sc_xfer->flags & SCSI_POLL)) { /* Wait for at last 400ns for status bit to be valid */ DELAY(1); wdc_atapi_intr(chp, xfer, 0); } else { chp->ch_flags |= WDCF_IRQ_WAIT; timeout(wdctimeout, chp, hz); } 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); wdc_atapi_intr(chp, xfer, 0); } } } int wdc_atapi_intr(chp, xfer, irq) struct channel_softc *chp; struct wdc_xfer *xfer; int irq; { struct scsi_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; struct scsi_generic _cmd_reqsense; struct scsi_sense *cmd_reqsense = (struct scsi_sense *)&_cmd_reqsense; u_int32_t cmd[4]; int cmdlen = (drvp->atapi_cap & ACAP_LEN) ? 16 : 12; memset (cmd, 0, sizeof(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"); } /* We should really wait_for_unbusy here too before switching drives. */ bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, WDSD_IBM | (xfer->drive << 4)); /* Ack interrupt done in wait_for_unbusy */ 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) drvp->n_dmaerrs++; sc_xfer->error = XS_TIMEOUT; wdc_atapi_reset(chp, xfer); return 1; } /* 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)) drvp->n_dmaerrs++; /* * if the request sense command was aborted, report the short sense * previously recorded, else continue normal processing */ if ((xfer->c_flags & C_SENSE) != 0 && (chp->ch_status & WDCS_ERR) != 0 && (chp->ch_error & WDCE_ABRT) != 0) { WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " "calling wdc_atapi_done()" ), DEBUG_INTR); wdc_atapi_done(chp, xfer); return 1; } if (xfer->c_flags & C_DMA) { dma_flags = ((sc_xfer->flags & SCSI_DATA_IN) || (xfer->c_flags & C_SENSE)) ? 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: if (xfer->c_flags & C_SENSE) { memset(cmd_reqsense, 0, sizeof(struct scsi_generic)); cmd_reqsense->opcode = REQUEST_SENSE; cmd_reqsense->length = xfer->c_bcount; bcopy(cmd_reqsense, cmd, sizeof(struct scsi_generic)); } else { bcopy(sc_xfer->cmd, cmd, sc_xfer->cmdlen); } 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, cmdlen >> 2); } else { bus_space_write_multi_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)cmd, cmdlen >> 1); } } else { if (drvp->drive_flags & DRIVE_CAP32) { bus_space_write_multi_stream_4(chp->data32iot, chp->data32ioh, 0, (u_int32_t *)cmd, cmdlen >> 2); } else { bus_space_write_multi_stream_2(chp->cmd_iot, chp->cmd_ioh, wd_data, (u_int16_t *)cmd, 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, 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 || (xfer->c_flags & C_DMA) != 0) { printf("wdc_atapi_intr: bad data phase DATAOUT\n"); if (xfer->c_flags & C_DMA) { (*chp->wdc->dma_finish)(chp->wdc->dma_arg, chp->channel, xfer->drive, dma_flags); drvp->n_dmaerrs++; } 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->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 && (xfer->c_flags & C_SENSE) == 0) || (xfer->c_flags & C_DMA) != 0) { printf("wdc_atapi_intr: bad data phase DATAIN\n"); if (xfer->c_flags & C_DMA) { (*chp->wdc->dma_finish)(chp->wdc->dma_arg, chp->channel, xfer->drive, dma_flags); drvp->n_dmaerrs++; } 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->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 (xfer->c_flags & C_DMA) { dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, chp->channel, xfer->drive, dma_flags); if (xfer->c_flags & C_SENSE) xfer->c_bcount -= sizeof(sc_xfer->sense); else xfer->c_bcount -= sc_xfer->datalen; } if (xfer->c_flags & C_SENSE) { if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { /* * request sense failed ! it's not suppossed * to be possible */ if (dma_err < 0) drvp->n_dmaerrs++; sc_xfer->error = XS_RESET; wdc_atapi_reset(chp, xfer); return (1); } else if (xfer->c_bcount < sizeof(sc_xfer->sense)) { /* use the sense we just read */ sc_xfer->error = XS_SENSE; } else { /* * command completed, but no data was read. * use the short sense we saved previsouly. */ sc_xfer->error = XS_SHORTSENSE; } } else { sc_xfer->resid = xfer->c_bcount; if (chp->ch_status & WDCS_ERR) { /* save the short sense */ sc_xfer->error = XS_SHORTSENSE; ATAPI_TO_SCSI_SENSE(&sc_xfer->sense, chp->ch_error); if ((sc_xfer->sc_link->quirks & ADEV_NOSENSE) == 0) { /* * let the driver issue a * 'request sense' */ xfer->databuf = &sc_xfer->sense; xfer->c_bcount = sizeof(sc_xfer->sense); xfer->c_skip = 0; xfer->c_flags |= C_SENSE; wdc_atapi_start(chp, xfer); return 1; } } else if (dma_err < 0) { drvp->n_dmaerrs++; 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; ATAPI_TO_SCSI_SENSE(&sc_xfer->sense, chp->ch_error); } else { sc_xfer->error = XS_RESET; wdc_atapi_reset(chp, xfer); return (1); } } WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " "\n", sc_xfer->error), 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 scsi_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); /* We shouldn't have to select the drive in these states. If we do, there are other, more serious problems */ if (drvp->state != IDENTIFY_WAIT && drvp->state != PIOMODE_WAIT && drvp->state != DMAMODE_WAIT) wdc_select_drive(chp, xfer->drive, delay); switch (drvp->state) { /* You need to send an ATAPI drive an ATAPI-specific command to revive it after a hard reset. Identify is about the most innocuous thing you can do that's guaranteed to be there */ case IDENTIFY: wdccommandshort(chp, drvp->drive, ATAPI_IDENTIFY_DEVICE); drvp->state = IDENTIFY_WAIT; break; case IDENTIFY_WAIT: errstring = "IDENTIFY"; /* Some ATAPI devices need to try to read the media before responding. Well, let's hope resets while polling are few and far between */ if (wdcwait(chp, 0, 0, (irq == 0) ? 10000 : 0)) goto timeout; if (!(chp->ch_status & WDCS_DRQ) && chp->ch_status & WDCS_ERR) { chp->ch_error = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_error); goto error; } wdcbit_bucket(chp, 512); drvp->state = PIOMODE; break; case PIOMODE: 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->ch_status & WDCS_ERR) { if (drvp->PIO_mode < 3) { drvp->PIO_mode = 3; goto piomode; } else { 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->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 (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; ATAPI_TO_SCSI_SENSE(&sc_xfer->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 scsi_xfer *sc_xfer = xfer->cmd; int need_done = xfer->c_flags & C_NEEDDONE; struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 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); /* remove this command from xfer queue */ wdc_free_xfer(chp, xfer); sc_xfer->flags |= ITSDONE; if (drvp->n_dmaerrs || (sc_xfer->error != XS_NOERROR && sc_xfer->error != XS_SENSE && sc_xfer->error != XS_SHORTSENSE)) { drvp->n_dmaerrs = 0; wdc_downgrade_mode(drvp); } if (need_done) { WDCDEBUG_PRINT(("wdc_atapi_done: scsi_done\n"), DEBUG_XFERS); scsi_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 scsi_xfer *sc_xfer = xfer->cmd; chp->ch_status = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); if (chp->ch_status & WDCS_DRQ) { printf ("wdc_atapi_reset: DRQ is asserted. We've really messed up\n"); wdc_reset_channel(drvp); } wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); /* Some ATAPI devices need extra time to find their brains after a reset */ delay(5000); 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; }