/*- * Copyright (c) 1998 - 2008 Søren Schmidt * All rights reserved. * * 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, * without modification, immediately at the beginning of the file. * 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. * * $FreeBSD: src/sys/dev/ata/ata-all.c,v 1.279 2007/02/23 16:25:08 jhb Exp $ */ #include "opt_ata.h" #include #include #include #include #include #include #include #include #include #include /* for {get,rel}_mplock() */ #include #include #include #include #include #include #include #include #include "ata-all.h" #include "ata_if.h" /* device structure */ static d_ioctl_t ata_ioctl; static struct dev_ops ata_ops = { { "ata", 159, 0 }, .d_open = nullopen, .d_close = nullclose, .d_ioctl = ata_ioctl, }; /* prototypes */ #if 0 static void ata_boot_attach(void); #endif static device_t ata_add_child(device_t, struct ata_device *, int); static int ata_getparam(struct ata_device *, int); static void bswap(int8_t *, int); static void btrim(int8_t *, int); static void bpack(int8_t *, int8_t *, int); /* global vars */ MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer"); int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL; devclass_t ata_devclass; struct objcache *ata_request_cache; struct objcache *ata_composite_cache; struct objcache_malloc_args ata_request_malloc_args = { sizeof(struct ata_request), M_ATA }; struct objcache_malloc_args ata_composite_malloc_args = { sizeof(struct ata_composite), M_ATA }; int ata_wc = 1; /* local vars */ static int ata_dma = 1; static int atapi_dma = 1; /* sysctl vars */ SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); TUNABLE_INT("hw.ata.ata_dma", &ata_dma); SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RW, &ata_dma, 0, "ATA disk DMA mode control"); TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RW, &atapi_dma, 0, "ATAPI device DMA mode control"); TUNABLE_INT("hw.ata.wc", &ata_wc); SYSCTL_INT(_hw_ata, OID_AUTO, ata_wc, CTLFLAG_RW, &ata_wc, 0, "ATA disk write caching"); /* * newbus device interface related functions */ int ata_probe(device_t dev) { return 0; } int ata_attach(device_t dev) { struct ata_channel *ch = device_get_softc(dev); int error, rid; /* check that we have a virgin channel to attach */ if (ch->r_irq) return EEXIST; /* initialize the softc basics */ ch->dev = dev; ch->state = ATA_IDLE; lockinit(&ch->state_mtx, "ataattach_state", 0, 0); lockinit(&ch->queue_mtx, "ataattach_queue", 0, 0); ata_queue_init(ch); /* reset the controller HW, the channel and device(s) */ while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) tsleep(&error, 0, "ataatch", 1); ATA_RESET(dev); ATA_LOCKING(dev, ATA_LF_UNLOCK); /* setup interrupt delivery */ rid = ATA_IRQ_RID; ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); if (!ch->r_irq) { device_printf(dev, "unable to allocate interrupt\n"); return ENXIO; } if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, (driver_intr_t *)ata_interrupt, ch, &ch->ih, NULL))) { device_printf(dev, "unable to setup interrupt\n"); return error; } /* probe and attach devices on this channel unless we are in early boot */ ata_identify(dev); return 0; } int ata_detach(device_t dev) { struct ata_channel *ch = device_get_softc(dev); device_t *children; int nchildren, i; /* check that we have a valid channel to detach */ if (!ch->r_irq) return ENXIO; /* grap the channel lock so no new requests gets launched */ lockmgr(&ch->state_mtx, LK_EXCLUSIVE); ch->state |= ATA_STALL_QUEUE; lockmgr(&ch->state_mtx, LK_RELEASE); /* detach & delete all children */ if (!device_get_children(dev, &children, &nchildren)) { for (i = 0; i < nchildren; i++) if (children[i]) device_delete_child(dev, children[i]); kfree(children, M_TEMP); } /* release resources */ bus_teardown_intr(dev, ch->r_irq, ch->ih); bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); ch->r_irq = NULL; lockuninit(&ch->state_mtx); lockuninit(&ch->queue_mtx); return 0; } int ata_reinit(device_t dev) { struct ata_channel *ch = device_get_softc(dev); struct ata_request *request; device_t *children; int nchildren, i; /* check that we have a valid channel to reinit */ if (!ch || !ch->r_irq) return ENXIO; if (bootverbose) device_printf(dev, "reiniting channel ..\n"); /* poll for locking the channel */ while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) tsleep(&dev, 0, "atarini", 1); /* catch eventual request in ch->running */ lockmgr(&ch->state_mtx, LK_EXCLUSIVE); if ((request = ch->running)) callout_cancel(&request->callout); ch->running = NULL; /* unconditionally grap the channel lock */ ch->state |= ATA_STALL_QUEUE; lockmgr(&ch->state_mtx, LK_RELEASE); /* reset the controller HW, the channel and device(s) */ ATA_RESET(dev); /* reinit the children and delete any that fails */ if (!device_get_children(dev, &children, &nchildren)) { get_mplock(); for (i = 0; i < nchildren; i++) { /* did any children go missing ? */ if (children[i] && device_is_attached(children[i]) && ATA_REINIT(children[i])) { /* * if we had a running request and its device matches * this child we need to inform the request that the * device is gone. */ if (request && request->dev == children[i]) { request->result = ENXIO; device_printf(request->dev, "FAILURE - device detached\n"); /* if not timeout finish request here */ if (!(request->flags & ATA_R_TIMEOUT)) ata_finish(request); request = NULL; } device_delete_child(dev, children[i]); } } kfree(children, M_TEMP); rel_mplock(); } /* if we still have a good request put it on the queue again */ if (request && !(request->flags & ATA_R_TIMEOUT)) { device_printf(request->dev, "WARNING - %s requeued due to channel reset", ata_cmd2str(request)); if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) kprintf(" LBA=%ju", request->u.ata.lba); kprintf("\n"); request->flags |= ATA_R_REQUEUE; ata_queue_request(request); } /* we're done release the channel for new work */ lockmgr(&ch->state_mtx, LK_EXCLUSIVE); ch->state = ATA_IDLE; lockmgr(&ch->state_mtx, LK_RELEASE); ATA_LOCKING(dev, ATA_LF_UNLOCK); if (bootverbose) device_printf(dev, "reinit done ..\n"); /* kick off requests on the queue */ ata_start(dev); return 0; } int ata_suspend(device_t dev) { struct ata_channel *ch; /* check for valid device */ if (!dev || !(ch = device_get_softc(dev))) return ENXIO; /* wait for the channel to be IDLE or detached before suspending */ while (ch->r_irq) { lockmgr(&ch->state_mtx, LK_EXCLUSIVE); if (ch->state == ATA_IDLE) { ch->state = ATA_ACTIVE; lockmgr(&ch->state_mtx, LK_RELEASE); break; } lockmgr(&ch->state_mtx, LK_RELEASE); tsleep(ch, 0, "atasusp", hz/10); } ATA_LOCKING(dev, ATA_LF_UNLOCK); return 0; } int ata_resume(device_t dev) { int error; /* check for valid device */ if (!dev || !device_get_softc(dev)) return ENXIO; /* reinit the devices, we dont know what mode/state they are in */ error = ata_reinit(dev); /* kick off requests on the queue */ ata_start(dev); return error; } int ata_interrupt(void *data) { struct ata_channel *ch = (struct ata_channel *)data; struct ata_request *request; lockmgr(&ch->state_mtx, LK_EXCLUSIVE); do { /* * Ignore interrupt if its not for us. This may also have the * side effect of processing events unrelated to I/O requests. */ if (ch->hw.status && !ch->hw.status(ch->dev)) break; /* * Check if we have a running request, and make sure it has been * completely queued. Otherwise the channel status may indicate * not-busy when, in fact, the command had not yet been issued. */ if ((request = ch->running) == NULL) break; if ((request->flags & ATA_R_HWCMDQUEUED) == 0) { kprintf("ata_interrupt: early interrupt\n"); break; } ATA_DEBUG_RQ(request, "interrupt"); /* safetycheck for the right state */ if (ch->state == ATA_IDLE) { device_printf(request->dev, "interrupt on idle channel ignored\n"); break; } /* * we have the HW locks, so end the transaction for this request * if it finishes immediately otherwise wait for next interrupt */ if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) { ch->running = NULL; if (ch->state == ATA_ACTIVE) ch->state = ATA_IDLE; lockmgr(&ch->state_mtx, LK_RELEASE); ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); ata_finish(request); return 1; } } while (0); lockmgr(&ch->state_mtx, LK_RELEASE); return 0; } /* * device related interfaces */ static int ata_ioctl(struct dev_ioctl_args *ap) { device_t device, *children; struct ata_ioc_devices *devices = (struct ata_ioc_devices *)ap->a_data; int *value = (int *)ap->a_data; int i, nchildren, error = ENOTTY; switch (ap->a_cmd) { case IOCATAGMAXCHANNEL: /* In case we have channel 0..n this will return n+1. */ *value = devclass_get_maxunit(ata_devclass); error = 0; break; case IOCATAREINIT: if (*value >= devclass_get_maxunit(ata_devclass) || !(device = devclass_get_device(ata_devclass, *value))) return ENXIO; error = ata_reinit(device); ata_start(device); break; case IOCATAATTACH: if (*value >= devclass_get_maxunit(ata_devclass) || !(device = devclass_get_device(ata_devclass, *value))) return ENXIO; /* XXX SOS should enable channel HW on controller */ error = ata_attach(device); break; case IOCATADETACH: if (*value >= devclass_get_maxunit(ata_devclass) || !(device = devclass_get_device(ata_devclass, *value))) return ENXIO; error = ata_detach(device); /* XXX SOS should disable channel HW on controller */ break; case IOCATADEVICES: if (devices->channel >= devclass_get_maxunit(ata_devclass) || !(device = devclass_get_device(ata_devclass, devices->channel))) return ENXIO; bzero(devices->name[0], 32); bzero(&devices->params[0], sizeof(struct ata_params)); bzero(devices->name[1], 32); bzero(&devices->params[1], sizeof(struct ata_params)); if (!device_get_children(device, &children, &nchildren)) { for (i = 0; i < nchildren; i++) { if (children[i] && device_is_attached(children[i])) { struct ata_device *atadev = device_get_softc(children[i]); if (atadev->unit == ATA_MASTER) { strncpy(devices->name[0], device_get_nameunit(children[i]), 32); bcopy(&atadev->param, &devices->params[0], sizeof(struct ata_params)); } if (atadev->unit == ATA_SLAVE) { strncpy(devices->name[1], device_get_nameunit(children[i]), 32); bcopy(&atadev->param, &devices->params[1], sizeof(struct ata_params)); } } } kfree(children, M_TEMP); error = 0; } else error = ENODEV; break; default: if (ata_raid_ioctl_func) error = ata_raid_ioctl_func(ap->a_cmd, ap->a_data); } return error; } int ata_device_ioctl(device_t dev, u_long cmd, caddr_t data) { struct ata_device *atadev = device_get_softc(dev); struct ata_ioc_request *ioc_request = (struct ata_ioc_request *)data; struct ata_params *params = (struct ata_params *)data; int *mode = (int *)data; struct ata_request *request; caddr_t buf; int error; switch (cmd) { case IOCATAREQUEST: if (!(buf = kmalloc(ioc_request->count, M_ATA, M_WAITOK | M_NULLOK))) { return ENOMEM; } if (!(request = ata_alloc_request())) { kfree(buf, M_ATA); return ENOMEM; } request->dev = atadev->dev; if (ioc_request->flags & ATA_CMD_WRITE) { error = copyin(ioc_request->data, buf, ioc_request->count); if (error) { kfree(buf, M_ATA); ata_free_request(request); return error; } } if (ioc_request->flags & ATA_CMD_ATAPI) { request->flags = ATA_R_ATAPI; bcopy(ioc_request->u.atapi.ccb, request->u.atapi.ccb, 16); } else { request->u.ata.command = ioc_request->u.ata.command; request->u.ata.feature = ioc_request->u.ata.feature; request->u.ata.lba = ioc_request->u.ata.lba; request->u.ata.count = ioc_request->u.ata.count; } request->timeout = ioc_request->timeout; request->data = buf; request->bytecount = ioc_request->count; request->transfersize = request->bytecount; if (ioc_request->flags & ATA_CMD_CONTROL) request->flags |= ATA_R_CONTROL; if (ioc_request->flags & ATA_CMD_READ) request->flags |= ATA_R_READ; if (ioc_request->flags & ATA_CMD_WRITE) request->flags |= ATA_R_WRITE; ata_queue_request(request); if (request->flags & ATA_R_ATAPI) { bcopy(&request->u.atapi.sense, &ioc_request->u.atapi.sense, sizeof(struct atapi_sense)); } else { ioc_request->u.ata.command = request->u.ata.command; ioc_request->u.ata.feature = request->u.ata.feature; ioc_request->u.ata.lba = request->u.ata.lba; ioc_request->u.ata.count = request->u.ata.count; } ioc_request->error = request->result; if (ioc_request->flags & ATA_CMD_READ) error = copyout(buf, ioc_request->data, ioc_request->count); else error = 0; kfree(buf, M_ATA); ata_free_request(request); return error; case IOCATAGPARM: ata_getparam(atadev, 0); bcopy(&atadev->param, params, sizeof(struct ata_params)); return 0; case IOCATASMODE: atadev->mode = *mode; ATA_SETMODE(device_get_parent(dev), dev); return 0; case IOCATAGMODE: *mode = atadev->mode; return 0; case IOCATASSPINDOWN: atadev->spindown = *mode; return 0; case IOCATAGSPINDOWN: *mode = atadev->spindown; return 0; default: return ENOTTY; } } #if 0 static void ata_boot_attach(void) { struct ata_channel *ch; int ctlr; get_mplock(); /* kick of probe and attach on all channels */ for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { if ((ch = devclass_get_softc(ata_devclass, ctlr))) { ata_identify(ch->dev); } } rel_mplock(); } #endif void ata_print_cable(device_t dev, u_int8_t *who) { device_printf(dev, "DMA limited to UDMA33, %s found non-ATA66 cable\n", who); } /* * misc support functions */ static device_t ata_add_child(device_t parent, struct ata_device *atadev, int unit) { device_t child; if ((child = device_add_child(parent, NULL, unit))) { device_set_softc(child, atadev); device_quiet(child); atadev->dev = child; atadev->max_iosize = DEV_BSIZE; atadev->mode = ATA_PIO_MAX; } return child; } static int ata_getparam(struct ata_device *atadev, int init) { struct ata_channel *ch = device_get_softc(device_get_parent(atadev->dev)); struct ata_request *request; u_int8_t command = 0; int error = ENOMEM, retries = 2; if (ch->devices & (ATA_ATA_MASTER << atadev->unit)) command = ATA_ATA_IDENTIFY; if (ch->devices & (ATA_ATAPI_MASTER << atadev->unit)) command = ATA_ATAPI_IDENTIFY; if (!command) return ENXIO; while (retries-- > 0 && error) { if (!(request = ata_alloc_request())) break; request->dev = atadev->dev; request->timeout = 1; request->retries = 0; request->u.ata.command = command; request->flags = (ATA_R_READ|ATA_R_AT_HEAD|ATA_R_DIRECT|ATA_R_QUIET); request->data = (void *)&atadev->param; request->bytecount = sizeof(struct ata_params); request->donecount = 0; request->transfersize = DEV_BSIZE; ata_queue_request(request); error = request->result; ata_free_request(request); } if (!error && (isprint(atadev->param.model[0]) || isprint(atadev->param.model[1]))) { struct ata_params *atacap = &atadev->param; int16_t *ptr; for (ptr = (int16_t *)atacap; ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) { *ptr = le16toh(*ptr); } if (!(!strncmp(atacap->model, "FX", 2) || !strncmp(atacap->model, "NEC", 3) || !strncmp(atacap->model, "Pioneer", 7) || !strncmp(atacap->model, "SHARP", 5))) { bswap(atacap->model, sizeof(atacap->model)); bswap(atacap->revision, sizeof(atacap->revision)); bswap(atacap->serial, sizeof(atacap->serial)); } btrim(atacap->model, sizeof(atacap->model)); bpack(atacap->model, atacap->model, sizeof(atacap->model)); btrim(atacap->revision, sizeof(atacap->revision)); bpack(atacap->revision, atacap->revision, sizeof(atacap->revision)); btrim(atacap->serial, sizeof(atacap->serial)); bpack(atacap->serial, atacap->serial, sizeof(atacap->serial)); if (bootverbose) kprintf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", device_get_unit(ch->dev), ata_unit2str(atadev), ata_mode2str(ata_pmode(atacap)), ata_mode2str(ata_wmode(atacap)), ata_mode2str(ata_umode(atacap)), (atacap->hwres & ATA_CABLE_ID) ? "80":"40"); if (init) { char buffer[64]; ksprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); device_set_desc_copy(atadev->dev, buffer); if ((atadev->param.config & ATA_PROTO_ATAPI) && (atadev->param.config != ATA_CFA_MAGIC1) && (atadev->param.config != ATA_CFA_MAGIC2)) { if (atapi_dma && ch->dma && (atadev->param.config & ATA_DRQ_MASK) != ATA_DRQ_INTR && ata_umode(&atadev->param) >= ATA_UDMA2) atadev->mode = ATA_DMA_MAX; } else { if (ata_dma && ch->dma && (ata_umode(&atadev->param) > 0 || ata_wmode(&atadev->param) > 0)) atadev->mode = ATA_DMA_MAX; } } } else { if (!error) error = ENXIO; } return error; } int ata_identify(device_t dev) { struct ata_channel *ch = device_get_softc(dev); struct ata_device *atadev; device_t child; int i; if (bootverbose) device_printf(dev, "identify ch->devices=%08x\n", ch->devices); for (i = 0; i < ATA_PM; ++i) { if (ch->devices & (((ATA_ATA_MASTER | ATA_ATAPI_MASTER) << i))) { int unit = -1; if (!(atadev = kmalloc(sizeof(struct ata_device), M_ATA, M_INTWAIT | M_ZERO))) { device_printf(dev, "out of memory\n"); return ENOMEM; } atadev->unit = i; #ifdef ATA_STATIC_ID if (ch->devices & ((ATA_ATA_MASTER << i))) unit = (device_get_unit(dev) << 1) + i; #endif if ((child = ata_add_child(dev, atadev, unit))) { if (ata_getparam(atadev, 1)) { device_delete_child(dev, child); kfree(atadev, M_ATA); } } else kfree(atadev, M_ATA); } } bus_generic_probe(dev); bus_generic_attach(dev); return 0; } void ata_default_registers(device_t dev) { struct ata_channel *ch = device_get_softc(dev); /* fill in the defaults from whats setup already */ ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; } void ata_modify_if_48bit(struct ata_request *request) { struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); struct ata_device *atadev = device_get_softc(request->dev); atadev->flags &= ~ATA_D_48BIT_ACTIVE; if (((request->u.ata.lba + request->u.ata.count) >= ATA_MAX_28BIT_LBA || request->u.ata.count > 256) && atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { /* translate command into 48bit version */ switch (request->u.ata.command) { case ATA_READ: request->u.ata.command = ATA_READ48; break; case ATA_READ_MUL: request->u.ata.command = ATA_READ_MUL48; break; case ATA_READ_DMA: if (ch->flags & ATA_NO_48BIT_DMA) { if (request->transfersize > DEV_BSIZE) request->u.ata.command = ATA_READ_MUL48; else request->u.ata.command = ATA_READ48; request->flags &= ~ATA_R_DMA; } else request->u.ata.command = ATA_READ_DMA48; break; case ATA_READ_DMA_QUEUED: if (ch->flags & ATA_NO_48BIT_DMA) { if (request->transfersize > DEV_BSIZE) request->u.ata.command = ATA_READ_MUL48; else request->u.ata.command = ATA_READ48; request->flags &= ~ATA_R_DMA; } else request->u.ata.command = ATA_READ_DMA_QUEUED48; break; case ATA_WRITE: request->u.ata.command = ATA_WRITE48; break; case ATA_WRITE_MUL: request->u.ata.command = ATA_WRITE_MUL48; break; case ATA_WRITE_DMA: if (ch->flags & ATA_NO_48BIT_DMA) { if (request->transfersize > DEV_BSIZE) request->u.ata.command = ATA_WRITE_MUL48; else request->u.ata.command = ATA_WRITE48; request->flags &= ~ATA_R_DMA; } else request->u.ata.command = ATA_WRITE_DMA48; break; case ATA_WRITE_DMA_QUEUED: if (ch->flags & ATA_NO_48BIT_DMA) { if (request->transfersize > DEV_BSIZE) request->u.ata.command = ATA_WRITE_MUL48; else request->u.ata.command = ATA_WRITE48; request->u.ata.command = ATA_WRITE48; request->flags &= ~ATA_R_DMA; } else request->u.ata.command = ATA_WRITE_DMA_QUEUED48; break; case ATA_FLUSHCACHE: request->u.ata.command = ATA_FLUSHCACHE48; break; case ATA_READ_NATIVE_MAX_ADDRESS: request->u.ata.command = ATA_READ_NATIVE_MAX_ADDRESS48; break; case ATA_SET_MAX_ADDRESS: request->u.ata.command = ATA_SET_MAX_ADDRESS48; break; default: return; } atadev->flags |= ATA_D_48BIT_ACTIVE; } } void ata_udelay(int interval) { /* * We can't use tsleep here, because we might be called from callout * context. */ if (1 || interval < (1000000/hz)) DELAY(interval); else tsleep(&interval, 0, "ataslp", 1 + interval / (1000000 / hz)); } const char * ata_unit2str(struct ata_device *atadev) { static char str[8]; ksprintf(str, "%s", atadev->unit == ATA_MASTER ? "master" : "slave"); return str; } const char * ata_mode2str(int mode) { switch (mode) { case -1: return "UNSUPPORTED"; case ATA_PIO0: return "PIO0"; case ATA_PIO1: return "PIO1"; case ATA_PIO2: return "PIO2"; case ATA_PIO3: return "PIO3"; case ATA_PIO4: return "PIO4"; case ATA_WDMA0: return "WDMA0"; case ATA_WDMA1: return "WDMA1"; case ATA_WDMA2: return "WDMA2"; case ATA_UDMA0: return "UDMA16"; case ATA_UDMA1: return "UDMA25"; case ATA_UDMA2: return "UDMA33"; case ATA_UDMA3: return "UDMA40"; case ATA_UDMA4: return "UDMA66"; case ATA_UDMA5: return "UDMA100"; case ATA_UDMA6: return "UDMA133"; case ATA_SA150: return "SATA150"; case ATA_SA300: return "SATA300"; case ATA_USB: return "USB"; case ATA_USB1: return "USB1"; case ATA_USB2: return "USB2"; default: if (mode & ATA_DMA_MASK) return "BIOSDMA"; else return "BIOSPIO"; } } int ata_atapi(device_t dev) { struct ata_channel *ch = device_get_softc(device_get_parent(dev)); struct ata_device *atadev = device_get_softc(dev); return ((atadev->unit == ATA_MASTER && ch->devices & ATA_ATAPI_MASTER) || (atadev->unit == ATA_SLAVE && ch->devices & ATA_ATAPI_SLAVE)); } int ata_pmode(struct ata_params *ap) { if (ap->atavalid & ATA_FLAG_64_70) { if (ap->apiomodes & 0x02) return ATA_PIO4; if (ap->apiomodes & 0x01) return ATA_PIO3; } if (ap->mwdmamodes & 0x04) return ATA_PIO4; if (ap->mwdmamodes & 0x02) return ATA_PIO3; if (ap->mwdmamodes & 0x01) return ATA_PIO2; if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200) return ATA_PIO2; if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100) return ATA_PIO1; if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000) return ATA_PIO0; return ATA_PIO0; } int ata_wmode(struct ata_params *ap) { if (ap->mwdmamodes & 0x04) return ATA_WDMA2; if (ap->mwdmamodes & 0x02) return ATA_WDMA1; if (ap->mwdmamodes & 0x01) return ATA_WDMA0; return -1; } int ata_umode(struct ata_params *ap) { if (ap->atavalid & ATA_FLAG_88) { if (ap->udmamodes & 0x40) return ATA_UDMA6; if (ap->udmamodes & 0x20) return ATA_UDMA5; if (ap->udmamodes & 0x10) return ATA_UDMA4; if (ap->udmamodes & 0x08) return ATA_UDMA3; if (ap->udmamodes & 0x04) return ATA_UDMA2; if (ap->udmamodes & 0x02) return ATA_UDMA1; if (ap->udmamodes & 0x01) return ATA_UDMA0; } return -1; } int ata_limit_mode(device_t dev, int mode, int maxmode) { struct ata_device *atadev = device_get_softc(dev); if (maxmode && mode > maxmode) mode = maxmode; if (mode >= ATA_UDMA0 && ata_umode(&atadev->param) > 0) return min(mode, ata_umode(&atadev->param)); if (mode >= ATA_WDMA0 && ata_wmode(&atadev->param) > 0) return min(mode, ata_wmode(&atadev->param)); if (mode > ata_pmode(&atadev->param)) return min(mode, ata_pmode(&atadev->param)); return mode; } static void bswap(int8_t *buf, int len) { u_int16_t *ptr = (u_int16_t*)(buf + len); while (--ptr >= (u_int16_t*)buf) *ptr = ntohs(*ptr); } static void btrim(int8_t *buf, int len) { int8_t *ptr; for (ptr = buf; ptr < buf+len; ++ptr) if (!*ptr || *ptr == '_') *ptr = ' '; for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr) *ptr = 0; } static void bpack(int8_t *src, int8_t *dst, int len) { int i, j, blank; for (i = j = blank = 0 ; i < len; i++) { if (blank && src[i] == ' ') continue; if (blank && src[i] != ' ') { dst[j++] = src[i]; blank = 0; continue; } if (src[i] == ' ') { blank = 1; if (i == 0) continue; } dst[j++] = src[i]; } if (j < len) dst[j] = 0x00; } /* * module handeling */ static int ata_module_event_handler(module_t mod, int what, void *arg) { /* static because we need the reference at destruction time */ static cdev_t atacdev; switch (what) { case MOD_LOAD: /* register controlling device */ atacdev = make_dev(&ata_ops, 0, UID_ROOT, GID_OPERATOR, 0600, "ata"); reference_dev(atacdev); return 0; case MOD_UNLOAD: /* deregister controlling device */ destroy_dev(atacdev); dev_ops_remove_all(&ata_ops); return 0; default: return EOPNOTSUPP; } } static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); MODULE_VERSION(ata, 1); /* * Construct a completely zero'ed ata_request. On objcache_put(), an * ata_request object is also zero'ed, so objcache_get() is guaranteed to give * completely zero'ed objects without spending too much time. */ static boolean_t ata_request_cache_ctor(void *obj, void *private, int ocflags) { struct ata_request *arp = obj; bzero(arp, sizeof(struct ata_request)); return(TRUE); } /* * Construct a completely zero'ed ata_composite. On objcache_put(), an * ata_composite object is also zero'ed, so objcache_get() is guaranteed to give * completely zero'ed objects without spending too much time. */ static boolean_t ata_composite_cache_ctor(void *obj, void *private, int ocflags) { struct ata_composite *acp = obj; bzero(acp, sizeof(struct ata_composite)); return(TRUE); } static void ata_init(void) { ata_request_cache = objcache_create("ata_request", 0, 0, ata_request_cache_ctor, NULL, NULL, objcache_malloc_alloc, objcache_malloc_free, &ata_request_malloc_args); ata_composite_cache = objcache_create("ata_composite", 0, 0, ata_composite_cache_ctor, NULL, NULL, objcache_malloc_alloc, objcache_malloc_free, &ata_composite_malloc_args); } SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); static void ata_uninit(void) { objcache_destroy(ata_composite_cache); objcache_destroy(ata_request_cache); } SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL);