/*- * Copyright (c) 1998 - 2006 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. */ #include __FBSDID("$FreeBSD$"); #include "opt_ata.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* prototypes */ static int ata_begin_transaction(struct ata_request *); static int ata_end_transaction(struct ata_request *); static int ata_wait(struct ata_channel *ch, struct ata_device *, u_int8_t); static void ata_pio_read(struct ata_request *, int); static void ata_pio_write(struct ata_request *, int); /* * low level ATA functions */ void ata_generic_hw(device_t dev) { struct ata_channel *ch = device_get_softc(dev); ch->hw.begin_transaction = ata_begin_transaction; ch->hw.end_transaction = ata_end_transaction; ch->hw.command = ata_generic_command; } /* must be called with ATA channel locked and state_mtx held */ static int ata_begin_transaction(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); int dummy, error; ATA_DEBUG_RQ(request, "begin transaction"); /* disable ATAPI DMA writes if HW doesn't support it */ if ((ch->flags & ATA_ATAPI_DMA_RO) && ((request->flags & (ATA_R_ATAPI | ATA_R_DMA | ATA_R_WRITE)) == (ATA_R_ATAPI | ATA_R_DMA | ATA_R_WRITE))) request->flags &= ~ATA_R_DMA; /* check for 48 bit access and convert if needed */ ata_modify_if_48bit(request); switch (request->flags & (ATA_R_ATAPI | ATA_R_DMA)) { /* ATA PIO data transfer and control commands */ default: { /* record command direction here as our request might be gone later */ int write = (request->flags & ATA_R_WRITE); /* issue command */ if (ch->hw.command(request)) { device_printf(request->dev, "error issuing %s command\n", ata_cmd2str(request)); request->result = EIO; goto begin_finished; } /* device reset doesn't interrupt */ if (request->u.ata.command == ATA_DEVICE_RESET) { int timeout = 1000000; do { DELAY(10); request->status = ATA_IDX_INB(ch, ATA_STATUS); } while (request->status & ATA_S_BUSY && timeout--); if (request->status & ATA_S_ERROR) request->error = ATA_IDX_INB(ch, ATA_ERROR); goto begin_finished; } /* if write command output the data */ if (write) { if (ata_wait(ch, atadev, (ATA_S_READY | ATA_S_DRQ)) < 0) { device_printf(request->dev, "timeout waiting for write DRQ\n"); request->result = EIO; goto begin_finished; } ata_pio_write(request, request->transfersize); } } goto begin_continue; /* ATA DMA data transfer commands */ case ATA_R_DMA: /* check sanity, setup SG list and DMA engine */ if ((error = ch->dma->load(ch->dev, request->data, request->bytecount, request->flags & ATA_R_READ, ch->dma->sg, &dummy))) { device_printf(request->dev, "setting up DMA failed\n"); request->result = error; goto begin_finished; } /* issue command */ if (ch->hw.command(request)) { device_printf(request->dev, "error issuing %s command\n", ata_cmd2str(request)); request->result = EIO; goto begin_finished; } /* start DMA engine */ if (ch->dma->start && ch->dma->start(request->dev)) { device_printf(request->dev, "error starting DMA\n"); request->result = EIO; goto begin_finished; } goto begin_continue; /* ATAPI PIO commands */ case ATA_R_ATAPI: /* is this just a POLL DSC command ? */ if (request->u.atapi.ccb[0] == ATAPI_POLL_DSC) { ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | atadev->unit); DELAY(10); if (!(ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_DSC)) request->result = EBUSY; goto begin_finished; } /* start ATAPI operation */ if (ch->hw.command(request)) { device_printf(request->dev, "error issuing ATA PACKET command\n"); request->result = EIO; goto begin_finished; } goto begin_continue; /* ATAPI DMA commands */ case ATA_R_ATAPI|ATA_R_DMA: /* is this just a POLL DSC command ? */ if (request->u.atapi.ccb[0] == ATAPI_POLL_DSC) { ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | atadev->unit); DELAY(10); if (!(ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_DSC)) request->result = EBUSY; goto begin_finished; } /* check sanity, setup SG list and DMA engine */ if ((error = ch->dma->load(ch->dev, request->data, request->bytecount, request->flags & ATA_R_READ, ch->dma->sg, &dummy))) { device_printf(request->dev, "setting up DMA failed\n"); request->result = error; goto begin_finished; } /* start ATAPI operation */ if (ch->hw.command(request)) { device_printf(request->dev, "error issuing ATA PACKET command\n"); request->result = EIO; goto begin_finished; } /* start DMA engine */ if (ch->dma->start && ch->dma->start(request->dev)) { request->result = EIO; goto begin_finished; } goto begin_continue; } /* NOT REACHED */ printf("ata_begin_transaction OOPS!!!\n"); begin_finished: if (ch->dma && ch->dma->flags & ATA_DMA_LOADED) ch->dma->unload(ch->dev); return ATA_OP_FINISHED; begin_continue: callout_reset(&request->callout, request->timeout * hz, (timeout_t*)ata_timeout, request); return ATA_OP_CONTINUES; } /* must be called with ATA channel locked and state_mtx held */ static int ata_end_transaction(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); int length; ATA_DEBUG_RQ(request, "end transaction"); /* clear interrupt and get status */ request->status = ATA_IDX_INB(ch, ATA_STATUS); switch (request->flags & (ATA_R_ATAPI | ATA_R_DMA | ATA_R_CONTROL)) { /* ATA PIO data transfer and control commands */ default: /* on timeouts we have no data or anything so just return */ if (request->flags & ATA_R_TIMEOUT) goto end_finished; /* on control commands read back registers to the request struct */ if (request->flags & ATA_R_CONTROL) { if (atadev->flags & ATA_D_48BIT_ACTIVE) { ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT | ATA_A_HOB); request->u.ata.count = (ATA_IDX_INB(ch, ATA_COUNT) << 8); request->u.ata.lba = ((u_int64_t)(ATA_IDX_INB(ch, ATA_SECTOR)) << 24) | ((u_int64_t)(ATA_IDX_INB(ch, ATA_CYL_LSB)) << 32) | ((u_int64_t)(ATA_IDX_INB(ch, ATA_CYL_MSB)) << 40); ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT); request->u.ata.count |= ATA_IDX_INB(ch, ATA_COUNT); request->u.ata.lba |= (ATA_IDX_INB(ch, ATA_SECTOR) | (ATA_IDX_INB(ch, ATA_CYL_LSB) << 8) | (ATA_IDX_INB(ch, ATA_CYL_MSB) << 16)); } else { request->u.ata.count = ATA_IDX_INB(ch, ATA_COUNT); request->u.ata.lba = ATA_IDX_INB(ch, ATA_SECTOR) | (ATA_IDX_INB(ch, ATA_CYL_LSB) << 8) | (ATA_IDX_INB(ch, ATA_CYL_MSB) << 16) | ((ATA_IDX_INB(ch, ATA_DRIVE) & 0xf) << 24); } } /* if we got an error we are done with the HW */ if (request->status & ATA_S_ERROR) { request->error = ATA_IDX_INB(ch, ATA_ERROR); goto end_finished; } /* are we moving data ? */ if (request->flags & (ATA_R_READ | ATA_R_WRITE)) { /* if read data get it */ if (request->flags & ATA_R_READ) { int flags = ATA_S_DRQ; if (request->u.ata.command != ATA_ATAPI_IDENTIFY) flags |= ATA_S_READY; if (ata_wait(ch, atadev, flags) < 0) { device_printf(request->dev, "timeout waiting for read DRQ\n"); request->result = EIO; goto end_finished; } ata_pio_read(request, request->transfersize); } /* update how far we've gotten */ request->donecount += request->transfersize; /* do we need a scoop more ? */ if (request->bytecount > request->donecount) { /* set this transfer size according to HW capabilities */ request->transfersize = min((request->bytecount - request->donecount), request->transfersize); /* if data write command, output the data */ if (request->flags & ATA_R_WRITE) { /* if we get an error here we are done with the HW */ if (ata_wait(ch, atadev, (ATA_S_READY | ATA_S_DRQ)) < 0) { device_printf(request->dev, "timeout waiting for write DRQ\n"); request->status = ATA_IDX_INB(ch, ATA_STATUS); goto end_finished; } /* output data and return waiting for new interrupt */ ata_pio_write(request, request->transfersize); goto end_continue; } /* if data read command, return & wait for interrupt */ if (request->flags & ATA_R_READ) goto end_continue; } } /* done with HW */ goto end_finished; /* ATA DMA data transfer commands */ case ATA_R_DMA: /* stop DMA engine and get status */ if (ch->dma->stop) request->dmastat = ch->dma->stop(request->dev); /* did we get error or data */ if (request->status & ATA_S_ERROR) request->error = ATA_IDX_INB(ch, ATA_ERROR); else if (request->dmastat & ATA_BMSTAT_ERROR) request->status |= ATA_S_ERROR; else if (!(request->flags & ATA_R_TIMEOUT)) request->donecount = request->bytecount; /* release SG list etc */ ch->dma->unload(ch->dev); /* done with HW */ goto end_finished; /* ATAPI PIO commands */ case ATA_R_ATAPI: length = ATA_IDX_INB(ch, ATA_CYL_LSB)|(ATA_IDX_INB(ch, ATA_CYL_MSB)<<8); /* on timeouts we have no data or anything so just return */ if (request->flags & ATA_R_TIMEOUT) goto end_finished; switch ((ATA_IDX_INB(ch, ATA_IREASON) & (ATA_I_CMD | ATA_I_IN)) | (request->status & ATA_S_DRQ)) { case ATAPI_P_CMDOUT: /* this seems to be needed for some (slow) devices */ DELAY(10); if (!(request->status & ATA_S_DRQ)) { device_printf(request->dev, "command interrupt without DRQ\n"); request->status = ATA_S_ERROR; goto end_finished; } ATA_IDX_OUTSW_STRM(ch, ATA_DATA, (int16_t *)request->u.atapi.ccb, (atadev->param.config & ATA_PROTO_MASK)== ATA_PROTO_ATAPI_12 ? 6 : 8); /* return wait for interrupt */ goto end_continue; case ATAPI_P_WRITE: if (request->flags & ATA_R_READ) { request->status = ATA_S_ERROR; device_printf(request->dev, "%s trying to write on read buffer\n", ata_cmd2str(request)); goto end_finished; break; } ata_pio_write(request, length); request->donecount += length; /* set next transfer size according to HW capabilities */ request->transfersize = min((request->bytecount-request->donecount), request->transfersize); /* return wait for interrupt */ goto end_continue; case ATAPI_P_READ: if (request->flags & ATA_R_WRITE) { request->status = ATA_S_ERROR; device_printf(request->dev, "%s trying to read on write buffer\n", ata_cmd2str(request)); goto end_finished; } ata_pio_read(request, length); request->donecount += length; /* set next transfer size according to HW capabilities */ request->transfersize = min((request->bytecount-request->donecount), request->transfersize); /* return wait for interrupt */ goto end_continue; case ATAPI_P_DONEDRQ: device_printf(request->dev, "WARNING - %s DONEDRQ non conformant device\n", ata_cmd2str(request)); if (request->flags & ATA_R_READ) { ata_pio_read(request, length); request->donecount += length; } else if (request->flags & ATA_R_WRITE) { ata_pio_write(request, length); request->donecount += length; } else request->status = ATA_S_ERROR; /* FALLTHROUGH */ case ATAPI_P_ABORT: case ATAPI_P_DONE: if (request->status & (ATA_S_ERROR | ATA_S_DWF)) request->error = ATA_IDX_INB(ch, ATA_ERROR); goto end_finished; default: device_printf(request->dev, "unknown transfer phase\n"); request->status = ATA_S_ERROR; } /* done with HW */ goto end_finished; /* ATAPI DMA commands */ case ATA_R_ATAPI|ATA_R_DMA: /* stop DMA engine and get status */ if (ch->dma->stop) request->dmastat = ch->dma->stop(request->dev); /* did we get error or data */ if (request->status & (ATA_S_ERROR | ATA_S_DWF)) request->error = ATA_IDX_INB(ch, ATA_ERROR); else if (request->dmastat & ATA_BMSTAT_ERROR) request->status |= ATA_S_ERROR; else if (!(request->flags & ATA_R_TIMEOUT)) request->donecount = request->bytecount; /* release SG list etc */ ch->dma->unload(ch->dev); /* done with HW */ goto end_finished; } /* NOT REACHED */ printf("ata_end_transaction OOPS!!\n"); end_finished: callout_stop(&request->callout); return ATA_OP_FINISHED; end_continue: return ATA_OP_CONTINUES; } /* must be called with ATA channel locked */ void ata_generic_reset(device_t dev) { struct ata_channel *ch = device_get_softc(dev); u_int8_t ostat0 = 0, stat0 = 0, ostat1 = 0, stat1 = 0; u_int8_t err = 0, lsb = 0, msb = 0; int mask = 0, timeout; /* do we have any signs of ATA/ATAPI HW being present ? */ ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_MASTER); DELAY(10); ostat0 = ATA_IDX_INB(ch, ATA_STATUS); if ((ostat0 & 0xf8) != 0xf8 && ostat0 != 0xa5) { stat0 = ATA_S_BUSY; mask |= 0x01; } /* in some setups we dont want to test for a slave */ if (!(ch->flags & ATA_NO_SLAVE)) { ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_SLAVE); DELAY(10); ostat1 = ATA_IDX_INB(ch, ATA_STATUS); if ((ostat1 & 0xf8) != 0xf8 && ostat1 != 0xa5) { stat1 = ATA_S_BUSY; mask |= 0x02; } } if (bootverbose) device_printf(dev, "reset tp1 mask=%02x ostat0=%02x ostat1=%02x\n", mask, ostat0, ostat1); /* if nothing showed up there is no need to get any further */ /* XXX SOS is that too strong?, we just might loose devices here */ ch->devices = 0; if (!mask) return; /* reset (both) devices on this channel */ ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | ATA_MASTER); DELAY(10); ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_IDS | ATA_A_RESET); ata_udelay(10000); ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_IDS); ata_udelay(100000); ATA_IDX_INB(ch, ATA_ERROR); /* wait for BUSY to go inactive */ for (timeout = 0; timeout < 310; timeout++) { if ((mask & 0x01) && (stat0 & ATA_S_BUSY)) { ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_MASTER); DELAY(10); err = ATA_IDX_INB(ch, ATA_ERROR); lsb = ATA_IDX_INB(ch, ATA_CYL_LSB); msb = ATA_IDX_INB(ch, ATA_CYL_MSB); stat0 = ATA_IDX_INB(ch, ATA_STATUS); if (bootverbose) device_printf(dev, "stat0=0x%02x err=0x%02x lsb=0x%02x msb=0x%02x\n", stat0, err, lsb, msb); if (stat0 == err && lsb == err && msb == err && timeout > (stat0 & ATA_S_BUSY ? 100 : 10)) mask &= ~0x01; if (!(stat0 & ATA_S_BUSY)) { if ((err & 0x7f) == ATA_E_ILI) { if (lsb == ATAPI_MAGIC_LSB && msb == ATAPI_MAGIC_MSB) { ch->devices |= ATA_ATAPI_MASTER; } else if (stat0 & ATA_S_READY) { ch->devices |= ATA_ATA_MASTER; } } else if ((stat0 & 0x0f) && err == lsb && err == msb) { stat0 |= ATA_S_BUSY; } } } if ((mask & 0x02) && (stat1 & ATA_S_BUSY) && !((mask & 0x01) && (stat0 & ATA_S_BUSY))) { ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_SLAVE); DELAY(10); err = ATA_IDX_INB(ch, ATA_ERROR); lsb = ATA_IDX_INB(ch, ATA_CYL_LSB); msb = ATA_IDX_INB(ch, ATA_CYL_MSB); stat1 = ATA_IDX_INB(ch, ATA_STATUS); if (bootverbose) device_printf(dev, "stat1=0x%02x err=0x%02x lsb=0x%02x msb=0x%02x\n", stat1, err, lsb, msb); if (stat1 == err && lsb == err && msb == err && timeout > (stat1 & ATA_S_BUSY ? 100 : 10)) mask &= ~0x02; if (!(stat1 & ATA_S_BUSY)) { if ((err & 0x7f) == ATA_E_ILI) { if (lsb == ATAPI_MAGIC_LSB && msb == ATAPI_MAGIC_MSB) { ch->devices |= ATA_ATAPI_SLAVE; } else if (stat1 & ATA_S_READY) { ch->devices |= ATA_ATA_SLAVE; } } else if ((stat1 & 0x0f) && err == lsb && err == msb) { stat1 |= ATA_S_BUSY; } } } if (mask == 0x00) /* nothing to wait for */ break; if (mask == 0x01) /* wait for master only */ if (!(stat0 & ATA_S_BUSY) || (stat0 == 0xff && timeout > 10)) break; if (mask == 0x02) /* wait for slave only */ if (!(stat1 & ATA_S_BUSY) || (stat1 == 0xff && timeout > 10)) break; if (mask == 0x03) { /* wait for both master & slave */ if (!(stat0 & ATA_S_BUSY) && !(stat1 & ATA_S_BUSY)) break; if ((stat0 == 0xff) && (timeout > 20)) mask &= ~0x01; if ((stat1 == 0xff) && (timeout > 20)) mask &= ~0x02; } ata_udelay(100000); } if (bootverbose) device_printf(dev, "reset tp2 stat0=%02x stat1=%02x devices=0x%b\n", stat0, stat1, ch->devices, "\20\4ATAPI_SLAVE\3ATAPI_MASTER\2ATA_SLAVE\1ATA_MASTER"); } static int ata_wait(struct ata_channel *ch, struct ata_device *atadev, u_int8_t mask) { u_int8_t status; int timeout = 0; DELAY(1); /* wait at max 1 second for device to get !BUSY */ while (timeout < 1000000) { status = ATA_IDX_INB(ch, ATA_ALTSTAT); /* if drive fails status, reselect the drive and try again */ if (status == 0xff) { ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | atadev->unit); timeout += 1000; DELAY(1000); continue; } /* are we done ? */ if (!(status & ATA_S_BUSY)) break; if (timeout > 1000) { timeout += 1000; DELAY(1000); } else { timeout += 10; DELAY(10); } } if (timeout >= 1000000) return -2; if (!mask) return (status & ATA_S_ERROR); DELAY(1); /* wait 50 msec for bits wanted */ timeout = 5000; while (timeout--) { status = ATA_IDX_INB(ch, ATA_ALTSTAT); if ((status & mask) == mask) return (status & ATA_S_ERROR); DELAY(10); } return -3; } int ata_generic_command(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); /* select device */ ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | atadev->unit); /* ready to issue command ? */ if (ata_wait(ch, atadev, 0) < 0) { device_printf(request->dev, "timeout waiting to issue command\n"); return -1; } /* enable interrupt */ ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT); if (request->flags & ATA_R_ATAPI) { int timeout = 5000; /* issue packet command to controller */ if (request->flags & ATA_R_DMA) { ATA_IDX_OUTB(ch, ATA_FEATURE, ATA_F_DMA); ATA_IDX_OUTB(ch, ATA_CYL_LSB, 0); ATA_IDX_OUTB(ch, ATA_CYL_MSB, 0); } else { ATA_IDX_OUTB(ch, ATA_FEATURE, 0); ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->transfersize); ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->transfersize >> 8); } ATA_IDX_OUTB(ch, ATA_COMMAND, ATA_PACKET_CMD); /* command interrupt device ? just return and wait for interrupt */ if ((atadev->param.config & ATA_DRQ_MASK) == ATA_DRQ_INTR) return 0; /* wait for ready to write ATAPI command block */ while (timeout--) { int reason = ATA_IDX_INB(ch, ATA_IREASON); int status = ATA_IDX_INB(ch, ATA_STATUS); if (((reason & (ATA_I_CMD | ATA_I_IN)) | (status & (ATA_S_DRQ | ATA_S_BUSY))) == ATAPI_P_CMDOUT) break; DELAY(20); } if (timeout <= 0) { device_printf(request->dev,"timeout waiting for ATAPI ready\n"); request->result = EIO; return -1; } /* this seems to be needed for some (slow) devices */ DELAY(10); /* output command block */ ATA_IDX_OUTSW_STRM(ch, ATA_DATA, (int16_t *)request->u.atapi.ccb, (atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12 ? 6 : 8); } else { if (atadev->flags & ATA_D_48BIT_ACTIVE) { ATA_IDX_OUTB(ch, ATA_FEATURE, request->u.ata.feature >> 8); ATA_IDX_OUTB(ch, ATA_FEATURE, request->u.ata.feature); ATA_IDX_OUTB(ch, ATA_COUNT, request->u.ata.count >> 8); ATA_IDX_OUTB(ch, ATA_COUNT, request->u.ata.count); ATA_IDX_OUTB(ch, ATA_SECTOR, request->u.ata.lba >> 24); ATA_IDX_OUTB(ch, ATA_SECTOR, request->u.ata.lba); ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->u.ata.lba >> 32); ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->u.ata.lba >> 8); ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->u.ata.lba >> 40); ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->u.ata.lba >> 16); ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_LBA | atadev->unit); } else { ATA_IDX_OUTB(ch, ATA_FEATURE, request->u.ata.feature); ATA_IDX_OUTB(ch, ATA_COUNT, request->u.ata.count); if (atadev->flags & ATA_D_USE_CHS) { int heads, sectors; if (atadev->param.atavalid & ATA_FLAG_54_58) { heads = atadev->param.current_heads; sectors = atadev->param.current_sectors; } else { heads = atadev->param.heads; sectors = atadev->param.sectors; } ATA_IDX_OUTB(ch, ATA_SECTOR, (request->u.ata.lba % sectors)+1); ATA_IDX_OUTB(ch, ATA_CYL_LSB, (request->u.ata.lba / (sectors * heads))); ATA_IDX_OUTB(ch, ATA_CYL_MSB, (request->u.ata.lba / (sectors * heads)) >> 8); ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | atadev->unit | (((request->u.ata.lba% (sectors * heads)) / sectors) & 0xf)); } else { ATA_IDX_OUTB(ch, ATA_SECTOR, request->u.ata.lba); ATA_IDX_OUTB(ch, ATA_CYL_LSB, request->u.ata.lba >> 8); ATA_IDX_OUTB(ch, ATA_CYL_MSB, request->u.ata.lba >> 16); ATA_IDX_OUTB(ch, ATA_DRIVE, ATA_D_IBM | ATA_D_LBA | atadev->unit | ((request->u.ata.lba >> 24) & 0x0f)); } } /* issue command to controller */ ATA_IDX_OUTB(ch, ATA_COMMAND, request->u.ata.command); } return 0; } static void ata_pio_read(struct ata_request *request, int length) { struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); int size = min(request->transfersize, length); int resid; if (ch->flags & ATA_USE_16BIT || (size % sizeof(int32_t))) ATA_IDX_INSW_STRM(ch, ATA_DATA, (void*)((uintptr_t)request->data+request->donecount), size / sizeof(int16_t)); else ATA_IDX_INSL_STRM(ch, ATA_DATA, (void*)((uintptr_t)request->data+request->donecount), size / sizeof(int32_t)); if (request->transfersize < length) { device_printf(request->dev, "WARNING - %s read data overrun %d>%d\n", ata_cmd2str(request), length, request->transfersize); for (resid = request->transfersize; resid < length; resid += sizeof(int16_t)) ATA_IDX_INW(ch, ATA_DATA); } } static void ata_pio_write(struct ata_request *request, int length) { struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); int size = min(request->transfersize, length); int resid; if (ch->flags & ATA_USE_16BIT || (size % sizeof(int32_t))) ATA_IDX_OUTSW_STRM(ch, ATA_DATA, (void*)((uintptr_t)request->data+request->donecount), size / sizeof(int16_t)); else ATA_IDX_OUTSL_STRM(ch, ATA_DATA, (void*)((uintptr_t)request->data+request->donecount), size / sizeof(int32_t)); if (request->transfersize < length) { device_printf(request->dev, "WARNING - %s write data underrun %d>%d\n", ata_cmd2str(request), length, request->transfersize); for (resid = request->transfersize; resid < length; resid += sizeof(int16_t)) ATA_IDX_OUTW(ch, ATA_DATA, 0); } }