X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fata.c;h=76e4f20d2f9cd6b35a078d9e2200a8ef21969c7d;hb=933bb76da7ad08758130a42bab7dc96fb6685b63;hp=cbd61d95b23e54527885b0d990c7b7c6963014e4;hpb=74799df6e977ffb14a2569e40fd19d262e84b0bb;p=seabios.git diff --git a/src/ata.c b/src/ata.c index cbd61d9..76e4f20 100644 --- a/src/ata.c +++ b/src/ata.c @@ -1,159 +1,218 @@ // Low level ATA disk access // -// Copyright (C) 2008 Kevin O'Connor +// Copyright (C) 2008,2009 Kevin O'Connor // Copyright (C) 2002 MandrakeSoft S.A. // -// This file may be distributed under the terms of the GNU GPLv3 license. +// This file may be distributed under the terms of the GNU LGPLv3 license. -#include "ata.h" // ATA_* #include "types.h" // u8 #include "ioport.h" // inb -#include "util.h" // BX_INFO +#include "util.h" // dprintf #include "cmos.h" // inb_cmos - -#define TIMEOUT 0 -#define BSY 1 -#define NOT_BSY 2 -#define NOT_BSY_DRQ 3 -#define NOT_BSY_NOT_DRQ 4 -#define NOT_BSY_RDY 5 - -#define IDE_TIMEOUT 32000u //32 seconds max for IDE ops - -#define DEBUGF1(fmt, args...) bprintf(0, fmt , ##args) -#define DEBUGF(fmt, args...) - -// XXX - lots of redundancy in this file. - -static int -await_ide(u8 when_done, u16 base, u16 timeout) +#include "pic.h" // enable_hwirq +#include "biosvar.h" // GET_EBDA +#include "pci.h" // foreachpci +#include "pci_ids.h" // PCI_CLASS_STORAGE_OTHER +#include "pci_regs.h" // PCI_INTERRUPT_LINE +#include "boot.h" // boot_add_hd +#include "disk.h" // struct ata_s +#include "ata.h" // ATA_CB_STAT +#include "blockcmd.h" // CDB_CMD_READ_10 + +#define IDE_TIMEOUT 32000 //32 seconds max for IDE ops + + +/**************************************************************** + * Helper functions + ****************************************************************/ + +// Wait for the specified ide state +static inline int +await_ide(u8 mask, u8 flags, u16 base, u16 timeout) { - u32 time=0, last=0; - // for the times you're supposed to throw one away - u16 status = inb(base + ATA_CB_STAT); + u64 end = calc_future_tsc(timeout); for (;;) { - status = inb(base+ATA_CB_STAT); - time++; - u8 result; - if (when_done == BSY) - result = status & ATA_CB_STAT_BSY; - else if (when_done == NOT_BSY) - result = !(status & ATA_CB_STAT_BSY); - else if (when_done == NOT_BSY_DRQ) - result = !(status & ATA_CB_STAT_BSY) && (status & ATA_CB_STAT_DRQ); - else if (when_done == NOT_BSY_NOT_DRQ) - result = !(status & ATA_CB_STAT_BSY) && !(status & ATA_CB_STAT_DRQ); - else if (when_done == NOT_BSY_RDY) - result = !(status & ATA_CB_STAT_BSY) && (status & ATA_CB_STAT_RDY); - else if (when_done == TIMEOUT) - result = 0; - - if (result) - return 0; - // mod 2048 each 16 ms - if (time>>16 != last) { - last = time >>16; - DEBUGF("await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY)" - " %d time= %d timeout= %d\n" - , when_done, time>>11, timeout); - } - if (status & ATA_CB_STAT_ERR) { - DEBUGF("await_ide: ERROR (TIMEOUT,BSY,!BSY,!BSY_DRQ" - ",!BSY_!DRQ,!BSY_RDY) %d time= %d timeout= %d\n" - , when_done, time>>11, timeout); + u8 status = inb(base+ATA_CB_STAT); + if ((status & mask) == flags) + return status; + if (check_tsc(end)) { + warn_timeout(); return -1; } - if ((timeout == 0) || ((time>>11) > timeout)) - break; + yield(); } - BX_INFO("IDE time out\n"); - return -1; } +// Wait for the device to be not-busy. +static int +await_not_bsy(u16 base) +{ + return await_ide(ATA_CB_STAT_BSY, 0, base, IDE_TIMEOUT); +} -// --------------------------------------------------------------------------- -// ATA/ATAPI driver : software reset -// --------------------------------------------------------------------------- -// ATA-3 -// 8.2.1 Software reset - Device 0 +// Wait for the device to be ready. +static int +await_rdy(u16 base) +{ + return await_ide(ATA_CB_STAT_RDY, ATA_CB_STAT_RDY, base, IDE_TIMEOUT); +} -void -ata_reset(u16 device) +// Wait for ide state - pauses for one ata cycle first. +static inline int +pause_await_not_bsy(u16 iobase1, u16 iobase2) { - u16 iobase1, iobase2; - u8 channel, slave, sn, sc; - u8 type; + // Wait one PIO transfer cycle. + inb(iobase2 + ATA_CB_ASTAT); - channel = device / 2; - slave = device % 2; + return await_not_bsy(iobase1); +} - iobase1 = GET_EBDA(ata.channels[channel].iobase1); - iobase2 = GET_EBDA(ata.channels[channel].iobase2); +// Wait for ide state - pause for 400ns first. +static inline int +ndelay_await_not_bsy(u16 iobase1) +{ + ndelay(400); + return await_not_bsy(iobase1); +} - // Reset +// Reset a drive +static void +ata_reset(struct atadrive_s *adrive_g) +{ + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u8 slave = GET_GLOBAL(adrive_g->slave); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2); - // 8.2.1 (a) -- set SRST in DC + dprintf(6, "ata_reset drive=%p\n", &adrive_g->drive); + // Pulse SRST outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN | ATA_CB_DC_SRST, iobase2+ATA_CB_DC); - - // 8.2.1 (b) -- wait for BSY - await_ide(BSY, iobase1, 20); - - // 8.2.1 (f) -- clear SRST + udelay(5); outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2+ATA_CB_DC); - - type=GET_EBDA(ata.devices[device].type); - if (type != ATA_TYPE_NONE) { - - // 8.2.1 (g) -- check for sc==sn==0x01 - // select device - outb(slave?ATA_CB_DH_DEV1:ATA_CB_DH_DEV0, iobase1+ATA_CB_DH); - sc = inb(iobase1+ATA_CB_SC); - sn = inb(iobase1+ATA_CB_SN); - - if ( (sc==0x01) && (sn==0x01) ) { - if (type == ATA_TYPE_ATA) //ATA - await_ide(NOT_BSY_RDY, iobase1, IDE_TIMEOUT); - else //ATAPI - await_ide(NOT_BSY, iobase1, IDE_TIMEOUT); + msleep(2); + + // wait for device to become not busy. + int status = await_not_bsy(iobase1); + if (status < 0) + goto done; + if (slave) { + // Change device. + u64 end = calc_future_tsc(IDE_TIMEOUT); + for (;;) { + outb(ATA_CB_DH_DEV1, iobase1 + ATA_CB_DH); + status = ndelay_await_not_bsy(iobase1); + if (status < 0) + goto done; + if (inb(iobase1 + ATA_CB_DH) == ATA_CB_DH_DEV1) + break; + // Change drive request failed to take effect - retry. + if (check_tsc(end)) { + warn_timeout(); + goto done; + } } - - // 8.2.1 (h) -- wait for not BSY - await_ide(NOT_BSY, iobase1, IDE_TIMEOUT); + } else { + // QEMU doesn't reset dh on reset, so set it explicitly. + outb(ATA_CB_DH_DEV0, iobase1 + ATA_CB_DH); } + // On a user-reset request, wait for RDY if it is an ATA device. + u8 type=GET_GLOBAL(adrive_g->drive.type); + if (type == DTYPE_ATA) + status = await_rdy(iobase1); + +done: // Enable interrupts outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC); -} + dprintf(6, "ata_reset exit status=%x\n", status); +} -// --------------------------------------------------------------------------- -// ATA/ATAPI driver : execute a data command -// --------------------------------------------------------------------------- - // returns - // 0 : no error - // 1 : BUSY bit set - // 2 : read error - // 3 : expected DRQ=1 - // 4 : no sectors left to read/verify - // 5 : more sectors to read/verify - // 6 : no sectors left to write - // 7 : more sectors to write +// Check for drive RDY for 16bit interface command. +static int +isready(struct atadrive_s *adrive_g) +{ + // Read the status from controller + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u8 status = inb(iobase1 + ATA_CB_STAT); + if ((status & (ATA_CB_STAT_BSY|ATA_CB_STAT_RDY)) == ATA_CB_STAT_RDY) + return DISK_RET_SUCCESS; + return DISK_RET_ENOTREADY; +} +// Default 16bit command demuxer for ATA and ATAPI devices. static int -send_cmd(struct ata_pio_command *cmd) +process_ata_misc_op(struct disk_op_s *op) { - u16 biosid = cmd->biosid; - u8 channel = biosid / 2; - u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1); - u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2); + if (!CONFIG_ATA) + return 0; + + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + switch (op->command) { + case CMD_RESET: + ata_reset(adrive_g); + return DISK_RET_SUCCESS; + case CMD_ISREADY: + return isready(adrive_g); + case CMD_FORMAT: + case CMD_VERIFY: + case CMD_SEEK: + return DISK_RET_SUCCESS; + default: + op->count = 0; + return DISK_RET_EPARAM; + } +} - u8 status = inb(iobase1 + ATA_CB_STAT); - if (status & ATA_CB_STAT_BSY) - return 1; - outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC); - if (cmd->command & 0x04) { - outb(0x00, iobase1 + ATA_CB_FR); +/**************************************************************** + * ATA send command + ****************************************************************/ + +struct ata_pio_command { + u8 feature; + u8 sector_count; + u8 lba_low; + u8 lba_mid; + u8 lba_high; + u8 device; + u8 command; + + u8 feature2; + u8 sector_count2; + u8 lba_low2; + u8 lba_mid2; + u8 lba_high2; +}; + +// Send an ata command to the drive. +static int +send_cmd(struct atadrive_s *adrive_g, struct ata_pio_command *cmd) +{ + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u8 slave = GET_GLOBAL(adrive_g->slave); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + + // Select device + int status = await_not_bsy(iobase1); + if (status < 0) + return status; + u8 newdh = ((cmd->device & ~ATA_CB_DH_DEV1) + | (slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0)); + u8 olddh = inb(iobase1 + ATA_CB_DH); + outb(newdh, iobase1 + ATA_CB_DH); + if ((olddh ^ newdh) & (1<<4)) { + // Was a device change - wait for device to become not busy. + status = ndelay_await_not_bsy(iobase1); + if (status < 0) + return status; + } + + // Check for ATA_CMD_(READ|WRITE)_(SECTORS|DMA)_EXT commands. + if ((cmd->command & ~0x11) == ATA_CMD_READ_SECTORS_EXT) { + outb(cmd->feature2, iobase1 + ATA_CB_FR); outb(cmd->sector_count2, iobase1 + ATA_CB_SC); outb(cmd->lba_low2, iobase1 + ATA_CB_SN); outb(cmd->lba_mid2, iobase1 + ATA_CB_CL); @@ -164,581 +223,849 @@ send_cmd(struct ata_pio_command *cmd) outb(cmd->lba_low, iobase1 + ATA_CB_SN); outb(cmd->lba_mid, iobase1 + ATA_CB_CL); outb(cmd->lba_high, iobase1 + ATA_CB_CH); - outb(cmd->device, iobase1 + ATA_CB_DH); outb(cmd->command, iobase1 + ATA_CB_CMD); - await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT); + return 0; +} + +// Wait for data after calling 'send_cmd'. +static int +ata_wait_data(u16 iobase1) +{ + int status = ndelay_await_not_bsy(iobase1); + if (status < 0) + return status; - status = inb(iobase1 + ATA_CB_STAT); if (status & ATA_CB_STAT_ERR) { - DEBUGF("send_cmd : read error\n"); - return 2; + dprintf(6, "send_cmd : read error (status=%02x err=%02x)\n" + , status, inb(iobase1 + ATA_CB_ERR)); + return -4; } if (!(status & ATA_CB_STAT_DRQ)) { - DEBUGF("send_cmd : DRQ not set (status %02x)\n" - , (unsigned) status); - return 3; + dprintf(6, "send_cmd : DRQ not set (status %02x)\n", status); + return -5; } return 0; } +// Send an ata command that does not transfer any further data. int -ata_transfer(struct ata_pio_command *cmd) +ata_cmd_nondata(struct atadrive_s *adrive_g, struct ata_pio_command *cmd) { - DEBUGF("ata_transfer id=%d cmd=%d lba=%d count=%d buf=%p\n" - , cmd->biosid, cmd->command - , (cmd->lba_high << 16) | (cmd->lba_mid << 8) | cmd->lba_low - , cmd->sector_count, cmd->far_buffer); + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2); - // Reset count of transferred data - SET_EBDA(ata.trsfsectors,0); - SET_EBDA(ata.trsfbytes,0L); + // Disable interrupts + outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC); - int ret = send_cmd(cmd); + int ret = send_cmd(adrive_g, cmd); if (ret) - return ret; + goto fail; + ret = ndelay_await_not_bsy(iobase1); + if (ret < 0) + goto fail; + + if (ret & ATA_CB_STAT_ERR) { + dprintf(6, "nondata cmd : read error (status=%02x err=%02x)\n" + , ret, inb(iobase1 + ATA_CB_ERR)); + ret = -4; + goto fail; + } + if (ret & ATA_CB_STAT_DRQ) { + dprintf(6, "nondata cmd : DRQ set (status %02x)\n", ret); + ret = -5; + goto fail; + } - u16 biosid = cmd->biosid; - u8 channel = biosid / 2; - u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1); - u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2); - u8 mode = GET_EBDA(ata.devices[biosid].mode); - int iswrite = (cmd->command & ~0x40) == ATA_CMD_WRITE_SECTORS; - u8 current = 0; - u16 count = cmd->sector_count; - u8 status; - void *far_buffer = cmd->far_buffer; +fail: + // Enable interrupts + outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC); + + return ret; +} + + +/**************************************************************** + * ATA PIO transfers + ****************************************************************/ + +// Transfer 'op->count' blocks (of 'blocksize' bytes) to/from drive +// 'op->drive_g'. +static int +ata_pio_transfer(struct disk_op_s *op, int iswrite, int blocksize) +{ + dprintf(16, "ata_pio_transfer id=%p write=%d count=%d bs=%d buf=%p\n" + , op->drive_g, iswrite, op->count, blocksize, op->buf_fl); + + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2); + int count = op->count; + void *buf_fl = op->buf_fl; + int status; for (;;) { if (iswrite) { // Write data to controller - DEBUGF("Write sector id=%d dest=%p\n", biosid, far_buffer); - if (mode == ATA_MODE_PIO32) - outsl_far(iobase1, far_buffer, 512 / 4); + dprintf(16, "Write sector id=%p dest=%p\n", op->drive_g, buf_fl); + if (CONFIG_ATA_PIO32) + outsl_fl(iobase1, buf_fl, blocksize / 4); else - outsw_far(iobase1, far_buffer, 512 / 2); + outsw_fl(iobase1, buf_fl, blocksize / 2); } else { // Read data from controller - DEBUGF("Read sector id=%d dest=%p\n", biosid, far_buffer); - if (mode == ATA_MODE_PIO32) - insl_far(iobase1, far_buffer, 512 / 4); + dprintf(16, "Read sector id=%p dest=%p\n", op->drive_g, buf_fl); + if (CONFIG_ATA_PIO32) + insl_fl(iobase1, buf_fl, blocksize / 4); else - insw_far(iobase1, far_buffer, 512 / 2); - await_ide(NOT_BSY, iobase1, IDE_TIMEOUT); + insw_fl(iobase1, buf_fl, blocksize / 2); + } + buf_fl += blocksize; + + status = pause_await_not_bsy(iobase1, iobase2); + if (status < 0) { + // Error + op->count -= count; + return status; } - far_buffer += 512; - current++; - SET_EBDA(ata.trsfsectors,current); count--; - status = inb(iobase1 + ATA_CB_STAT); - if (count == 0) + if (!count) break; - status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ - | ATA_CB_STAT_ERR); - if (status != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ)) { - DEBUGF("ata_transfer : more sectors left (status %02x)\n" - , (unsigned) status); - return 5; + status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR); + if (status != ATA_CB_STAT_DRQ) { + dprintf(6, "ata_pio_transfer : more sectors left (status %02x)\n" + , status); + op->count -= count; + return -6; } } - status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DF - | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR); + status &= (ATA_CB_STAT_BSY | ATA_CB_STAT_DF | ATA_CB_STAT_DRQ + | ATA_CB_STAT_ERR); if (!iswrite) status &= ~ATA_CB_STAT_DF; - if (status != ATA_CB_STAT_RDY ) { - DEBUGF("ata_transfer : no sectors left (status %02x)\n" - , (unsigned) status); - return 4; + if (status != 0) { + dprintf(6, "ata_pio_transfer : no sectors left (status %02x)\n", status); + return -7; } - // Enable interrupts - outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC); return 0; } -// --------------------------------------------------------------------------- -// ATA/ATAPI driver : execute a packet command -// --------------------------------------------------------------------------- - // returns - // 0 : no error - // 1 : error in parameters - // 2 : BUSY bit set - // 3 : error - // 4 : not ready -int -ata_cmd_packet(u16 biosid, u8 *cmdbuf, u8 cmdlen - , u16 header, u32 length, void *far_buffer) -{ - DEBUGF("ata_cmd_packet d=%d cmdlen=%d h=%d l=%d buf=%p\n" - , biosid, cmdlen, header, length, far_buffer); - u8 channel = biosid / 2; - u8 slave = biosid % 2; +/**************************************************************** + * ATA DMA transfers + ****************************************************************/ - // The header length must be even - if (header & 1) { - DEBUGF("ata_cmd_packet : header must be even (%04x)\n", header); - return 1; +#define BM_CMD 0 +#define BM_CMD_MEMWRITE 0x08 +#define BM_CMD_START 0x01 +#define BM_STATUS 2 +#define BM_STATUS_IRQ 0x04 +#define BM_STATUS_ERROR 0x02 +#define BM_STATUS_ACTIVE 0x01 +#define BM_TABLE 4 + +struct sff_dma_prd { + u32 buf_fl; + u32 count; +}; + +// Check if DMA available and setup transfer if so. +static int +ata_try_dma(struct disk_op_s *op, int iswrite, int blocksize) +{ + if (! CONFIG_ATA_DMA) + return -1; + u32 dest = (u32)op->buf_fl; + if (dest & 1) + // Need minimum alignment of 1. + return -1; + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iomaster = GET_GLOBALFLAT(chan_gf->iomaster); + if (! iomaster) + return -1; + u32 bytes = op->count * blocksize; + if (! bytes) + return -1; + + // Build PRD dma structure. + struct sff_dma_prd *dma = MAKE_FLATPTR( + get_ebda_seg() + , (void*)offsetof(struct extended_bios_data_area_s, extra_stack)); + struct sff_dma_prd *origdma = dma; + while (bytes) { + if (dma >= &origdma[16]) + // Too many descriptors.. + return -1; + u32 count = bytes; + u32 max = 0x10000 - (dest & 0xffff); + if (count > max) + count = max; + + SET_FLATPTR(dma->buf_fl, dest); + bytes -= count; + if (!bytes) + // Last descriptor. + count |= 1<<31; + dprintf(16, "dma@%p: %08x %08x\n", dma, dest, count); + dest += count; + SET_FLATPTR(dma->count, count); + dma++; } - u16 iobase1 = GET_EBDA(ata.channels[channel].iobase1); - u16 iobase2 = GET_EBDA(ata.channels[channel].iobase2); - u8 mode = GET_EBDA(ata.devices[biosid].mode); + // Program bus-master controller. + outl((u32)origdma, iomaster + BM_TABLE); + u8 oldcmd = inb(iomaster + BM_CMD) & ~(BM_CMD_MEMWRITE|BM_CMD_START); + outb(oldcmd | (iswrite ? 0x00 : BM_CMD_MEMWRITE), iomaster + BM_CMD); + outb(BM_STATUS_ERROR|BM_STATUS_IRQ, iomaster + BM_STATUS); - struct ata_pio_command cmd; - cmd.sector_count = 0; - cmd.feature = 0; - cmd.lba_low = 0; - cmd.lba_mid = 0xf0; - cmd.lba_high = 0xff; - cmd.device = slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0; - cmd.command = ATA_CMD_PACKET; + return 0; +} - cmd.biosid = biosid; - int ret = send_cmd(&cmd); - if (ret) - return ret; +// Transfer data using DMA. +static int +ata_dma_transfer(struct disk_op_s *op) +{ + if (! CONFIG_ATA_DMA) + return -1; + dprintf(16, "ata_dma_transfer id=%p buf=%p\n", op->drive_g, op->buf_fl); - // Reset count of transferred data - SET_EBDA(ata.trsfsectors,0); - SET_EBDA(ata.trsfbytes,0L); + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iomaster = GET_GLOBALFLAT(chan_gf->iomaster); - // Send command to device - outsw_far(iobase1, MAKE_32_PTR(GET_SEG(SS), (u32)cmdbuf), cmdlen / 2); + // Start bus-master controller. + u8 oldcmd = inb(iomaster + BM_CMD); + outb(oldcmd | BM_CMD_START, iomaster + BM_CMD); + u64 end = calc_future_tsc(IDE_TIMEOUT); u8 status; - u16 loops = 0; for (;;) { - if (loops == 0) {//first time through - status = inb(iobase2 + ATA_CB_ASTAT); - await_ide(NOT_BSY_DRQ, iobase1, IDE_TIMEOUT); - } else - await_ide(NOT_BSY, iobase1, IDE_TIMEOUT); - loops++; - - status = inb(iobase1 + ATA_CB_STAT); - inb(iobase1 + ATA_CB_SC); - - // Check if command completed - if(((inb(iobase1 + ATA_CB_SC)&0x7)==0x3) && - ((status & (ATA_CB_STAT_RDY | ATA_CB_STAT_ERR)) == ATA_CB_STAT_RDY)) + status = inb(iomaster + BM_STATUS); + if (status & BM_STATUS_IRQ) + break; + // Transfer in progress + if (check_tsc(end)) { + // Timeout. + warn_timeout(); break; - - if (status & ATA_CB_STAT_ERR) { - DEBUGF("ata_cmd_packet : error (status %02x)\n", status); - return 3; } + yield(); + } + outb(oldcmd & ~BM_CMD_START, iomaster + BM_CMD); + + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2); + int idestatus = pause_await_not_bsy(iobase1, iobase2); + + if ((status & (BM_STATUS_IRQ|BM_STATUS_ACTIVE)) == BM_STATUS_IRQ + && idestatus >= 0x00 + && (idestatus & (ATA_CB_STAT_BSY | ATA_CB_STAT_DF | ATA_CB_STAT_DRQ + | ATA_CB_STAT_ERR)) == 0x00) + // Success. + return 0; + + dprintf(6, "IDE DMA error (dma=%x ide=%x/%x/%x)\n", status, idestatus + , inb(iobase2 + ATA_CB_ASTAT), inb(iobase1 + ATA_CB_ERR)); + op->count = 0; + return -1; +} - // Get the byte count - u16 lcount = (((u16)(inb(iobase1 + ATA_CB_CH))<<8) - + inb(iobase1 + ATA_CB_CL)); - // adjust to read what we want - u16 lbefore, lafter; - if (header > lcount) { - lbefore=lcount; - header-=lcount; - lcount=0; - } else { - lbefore=header; - header=0; - lcount-=lbefore; - } +/**************************************************************** + * ATA hard drive functions + ****************************************************************/ - if (lcount > length) { - lafter=lcount-length; - lcount=length; - length=0; - } else { - lafter=0; - length-=lcount; - } +// Transfer data to harddrive using PIO protocol. +static int +ata_pio_cmd_data(struct disk_op_s *op, int iswrite, struct ata_pio_command *cmd) +{ + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2); - // Save byte count - u16 count = lcount; + // Disable interrupts + outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC); - DEBUGF("Trying to read %04x bytes (%04x %04x %04x) to %p\n" - , lbefore+lcount+lafter, lbefore, lcount, lafter, far_buffer); + int ret = send_cmd(adrive_g, cmd); + if (ret) + goto fail; + ret = ata_wait_data(iobase1); + if (ret) + goto fail; + ret = ata_pio_transfer(op, iswrite, DISK_SECTOR_SIZE); - // If counts not dividable by 4, use 16bits mode - u8 lmode = mode; - if (lbefore & 0x03) lmode=ATA_MODE_PIO16; - if (lcount & 0x03) lmode=ATA_MODE_PIO16; - if (lafter & 0x03) lmode=ATA_MODE_PIO16; +fail: + // Enable interrupts + outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC); + return ret; +} - // adds an extra byte if count are odd. before is always even - if (lcount & 0x01) { - lcount+=1; - if ((lafter > 0) && (lafter & 0x01)) { - lafter-=1; - } - } +// Transfer data to harddrive using DMA protocol. +static int +ata_dma_cmd_data(struct disk_op_s *op, struct ata_pio_command *cmd) +{ + if (! CONFIG_ATA_DMA) + return -1; + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + int ret = send_cmd(adrive_g, cmd); + if (ret) + return ret; + return ata_dma_transfer(op); +} - if (lmode == ATA_MODE_PIO32) { - lcount>>=2; lbefore>>=2; lafter>>=2; - } else { - lcount>>=1; lbefore>>=1; lafter>>=1; - } +// Read/write count blocks from a harddrive. +static int +ata_readwrite(struct disk_op_s *op, int iswrite) +{ + u64 lba = op->lba; - int i; - for (i=0; icount >= (1<<8) || lba + op->count >= (1<<28)) { + cmd.sector_count2 = op->count >> 8; + cmd.lba_low2 = lba >> 24; + cmd.lba_mid2 = lba >> 32; + cmd.lba_high2 = lba >> 40; + lba &= 0xffffff; + + if (usepio) + cmd.command = (iswrite ? ATA_CMD_WRITE_SECTORS_EXT + : ATA_CMD_READ_SECTORS_EXT); + else + cmd.command = (iswrite ? ATA_CMD_WRITE_DMA_EXT + : ATA_CMD_READ_DMA_EXT); + } else { + if (usepio) + cmd.command = (iswrite ? ATA_CMD_WRITE_SECTORS + : ATA_CMD_READ_SECTORS); else - insw_far(iobase1, far_buffer, lcount); + cmd.command = (iswrite ? ATA_CMD_WRITE_DMA + : ATA_CMD_READ_DMA); + } - for (i=0; icount; + cmd.lba_low = lba; + cmd.lba_mid = lba >> 8; + cmd.lba_high = lba >> 16; + cmd.device = ((lba >> 24) & 0xf) | ATA_CB_DH_LBA; + + int ret; + if (usepio) + ret = ata_pio_cmd_data(op, iswrite, &cmd); + else + ret = ata_dma_cmd_data(op, &cmd); + if (ret) + return DISK_RET_EBADTRACK; + return DISK_RET_SUCCESS; +} + +// 16bit command demuxer for ATA harddrives. +int +process_ata_op(struct disk_op_s *op) +{ + if (!CONFIG_ATA) + return 0; + + switch (op->command) { + case CMD_READ: + return ata_readwrite(op, 0); + case CMD_WRITE: + return ata_readwrite(op, 1); + default: + return process_ata_misc_op(op); + } +} + + +/**************************************************************** + * ATAPI functions + ****************************************************************/ + +#define CDROM_CDB_SIZE 12 + +// Low-level atapi command transmit function. +int +atapi_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize) +{ + if (! CONFIG_ATA) + return 0; + + struct atadrive_s *adrive_g = container_of( + op->drive_g, struct atadrive_s, drive); + struct ata_channel_s *chan_gf = GET_GLOBAL(adrive_g->chan_gf); + u16 iobase1 = GET_GLOBALFLAT(chan_gf->iobase1); + u16 iobase2 = GET_GLOBALFLAT(chan_gf->iobase2); + + struct ata_pio_command cmd; + memset(&cmd, 0, sizeof(cmd)); + cmd.lba_mid = blocksize; + cmd.lba_high = blocksize >> 8; + cmd.command = ATA_CMD_PACKET; + + // Disable interrupts + outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2 + ATA_CB_DC); + + int ret = send_cmd(adrive_g, &cmd); + if (ret) + goto fail; + ret = ata_wait_data(iobase1); + if (ret) + goto fail; - // Compute new buffer address - far_buffer += count; + // Send command to device + outsw_fl(iobase1, MAKE_FLATPTR(GET_SEG(SS), cdbcmd), CDROM_CDB_SIZE / 2); - // Save transferred bytes count - SET_EBDA(ata.trsfsectors, loops); + int status = pause_await_not_bsy(iobase1, iobase2); + if (status < 0) { + ret = status; + goto fail; } - // Final check, device must be ready - if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DF - | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR) ) - != ATA_CB_STAT_RDY ) { - DEBUGF("ata_cmd_packet : not ready (status %02x)\n" - , (unsigned) status); - return 4; + if (status & ATA_CB_STAT_ERR) { + u8 err = inb(iobase1 + ATA_CB_ERR); + // skip "Not Ready" + if (err != 0x20) + dprintf(6, "send_atapi_cmd : read error (status=%02x err=%02x)\n" + , status, err); + ret = -2; + goto fail; + } + if (!(status & ATA_CB_STAT_DRQ)) { + dprintf(6, "send_atapi_cmd : DRQ not set (status %02x)\n", status); + ret = -3; + goto fail; } + ret = ata_pio_transfer(op, 0, blocksize); + +fail: // Enable interrupts outb(ATA_CB_DC_HD15, iobase2+ATA_CB_DC); - return 0; + if (ret) + return DISK_RET_EBADTRACK; + return DISK_RET_SUCCESS; } +// 16bit command demuxer for ATAPI cdroms. int -cdrom_read(u16 biosid, u32 lba, u32 count, void *far_buffer, u16 skip) +process_atapi_op(struct disk_op_s *op) +{ + if (!CONFIG_ATA) + return 0; + switch (op->command) { + case CMD_READ: + return cdb_read(op); + case CMD_FORMAT: + case CMD_WRITE: + return DISK_RET_EWRITEPROTECT; + default: + return process_ata_misc_op(op); + } +} + + +/**************************************************************** + * ATA detect and init + ****************************************************************/ + +// Send an identify device or identify device packet command. +static int +send_ata_identity(struct atadrive_s *adrive_g, u16 *buffer, int command) { - u16 sectors = (count + 2048 - 1) / 2048; + memset(buffer, 0, DISK_SECTOR_SIZE); + + struct disk_op_s dop; + memset(&dop, 0, sizeof(dop)); + dop.drive_g = &adrive_g->drive; + dop.count = 1; + dop.lba = 1; + dop.buf_fl = MAKE_FLATPTR(GET_SEG(SS), buffer); - u8 atacmd[12]; - memset(atacmd, 0, sizeof(atacmd)); - atacmd[0]=0x28; // READ command - atacmd[7]=(sectors & 0xff00) >> 8; // Sectors - atacmd[8]=(sectors & 0x00ff); // Sectors - atacmd[2]=(lba & 0xff000000) >> 24; // LBA - atacmd[3]=(lba & 0x00ff0000) >> 16; - atacmd[4]=(lba & 0x0000ff00) >> 8; - atacmd[5]=(lba & 0x000000ff); + struct ata_pio_command cmd; + memset(&cmd, 0, sizeof(cmd)); + cmd.command = command; - return ata_cmd_packet(biosid, atacmd, sizeof(atacmd) - , skip, count, far_buffer); + return ata_pio_cmd_data(&dop, 0, &cmd); } -// --------------------------------------------------------------------------- -// ATA/ATAPI driver : device detection -// --------------------------------------------------------------------------- +// Extract the ATA/ATAPI version info. +int +ata_extract_version(u16 *buffer) +{ + // Extract ATA/ATAPI version. + u16 ataversion = buffer[80]; + u8 version; + for (version=15; version>0; version--) + if (ataversion & (1< 0 - SET_EBDA(ata.channels[0].iface,ATA_IFACE_ISA); - SET_EBDA(ata.channels[0].iobase1,0x1f0); - SET_EBDA(ata.channels[0].iobase2,0x3f0); - SET_EBDA(ata.channels[0].irq,14); -#endif -#if CONFIG_MAX_ATA_INTERFACES > 1 - SET_EBDA(ata.channels[1].iface,ATA_IFACE_ISA); - SET_EBDA(ata.channels[1].iobase1,0x170); - SET_EBDA(ata.channels[1].iobase2,0x370); - SET_EBDA(ata.channels[1].irq,15); -#endif -#if CONFIG_MAX_ATA_INTERFACES > 2 - SET_EBDA(ata.channels[2].iface,ATA_IFACE_ISA); - SET_EBDA(ata.channels[2].iobase1,0x1e8); - SET_EBDA(ata.channels[2].iobase2,0x3e0); - SET_EBDA(ata.channels[2].irq,12); -#endif -#if CONFIG_MAX_ATA_INTERFACES > 3 - SET_EBDA(ata.channels[3].iface,ATA_IFACE_ISA); - SET_EBDA(ata.channels[3].iobase1,0x168); - SET_EBDA(ata.channels[3].iobase2,0x360); - SET_EBDA(ata.channels[3].irq,11); -#endif -#if CONFIG_MAX_ATA_INTERFACES > 4 -#error Please fill the ATA interface informations -#endif +#define MAXMODEL 40 - // Device detection - hdcount=cdcount=0; +// Extract the ATA/ATAPI model info. +char * +ata_extract_model(char *model, u32 size, u16 *buffer) +{ + // Read model name + int i; + for (i=0; ichan_gf = dummy->chan_gf; + adrive_g->slave = dummy->slave; + adrive_g->drive.cntl_id = adrive_g->chan_gf->chanid * 2 + dummy->slave; + adrive_g->drive.removable = (buffer[0] & 0x80) ? 1 : 0; + return adrive_g; +} - channel = device / 2; - slave = device % 2; +// Detect if the given drive is an atapi - initialize it if so. +static struct atadrive_s * +init_drive_atapi(struct atadrive_s *dummy, u16 *buffer) +{ + // Send an IDENTIFY_DEVICE_PACKET command to device + int ret = send_ata_identity(dummy, buffer, ATA_CMD_IDENTIFY_PACKET_DEVICE); + if (ret) + return NULL; + + // Success - setup as ATAPI. + struct atadrive_s *adrive_g = init_atadrive(dummy, buffer); + if (!adrive_g) + return NULL; + adrive_g->drive.type = DTYPE_ATAPI; + adrive_g->drive.blksize = CDROM_SECTOR_SIZE; + adrive_g->drive.sectors = (u64)-1; + u8 iscd = ((buffer[0] >> 8) & 0x1f) == 0x05; + char model[MAXMODEL+1]; + char *desc = znprintf(MAXDESCSIZE + , "DVD/CD [ata%d-%d: %s ATAPI-%d %s]" + , adrive_g->chan_gf->chanid, adrive_g->slave + , ata_extract_model(model, MAXMODEL, buffer) + , ata_extract_version(buffer) + , (iscd ? "DVD/CD" : "Device")); + dprintf(1, "%s\n", desc); + + // fill cdidmap + if (iscd) { + int prio = bootprio_find_ata_device(adrive_g->chan_gf->pci_tmp, + adrive_g->chan_gf->chanid, + adrive_g->slave); + boot_add_cd(&adrive_g->drive, desc, prio); + } - iobase1 =GET_EBDA(ata.channels[channel].iobase1); - iobase2 =GET_EBDA(ata.channels[channel].iobase2); + return adrive_g; +} - // Disable interrupts - outb(ATA_CB_DC_HD15 | ATA_CB_DC_NIEN, iobase2+ATA_CB_DC); +// Detect if the given drive is a regular ata drive - initialize it if so. +static struct atadrive_s * +init_drive_ata(struct atadrive_s *dummy, u16 *buffer) +{ + // Send an IDENTIFY_DEVICE command to device + int ret = send_ata_identity(dummy, buffer, ATA_CMD_IDENTIFY_DEVICE); + if (ret) + return NULL; + + // Success - setup as ATA. + struct atadrive_s *adrive_g = init_atadrive(dummy, buffer); + if (!adrive_g) + return NULL; + adrive_g->drive.type = DTYPE_ATA; + adrive_g->drive.blksize = DISK_SECTOR_SIZE; + + adrive_g->drive.pchs.cylinders = buffer[1]; + adrive_g->drive.pchs.heads = buffer[3]; + adrive_g->drive.pchs.spt = buffer[6]; + + u64 sectors; + if (buffer[83] & (1 << 10)) // word 83 - lba48 support + sectors = *(u64*)&buffer[100]; // word 100-103 + else + sectors = *(u32*)&buffer[60]; // word 60 and word 61 + adrive_g->drive.sectors = sectors; + u64 adjsize = sectors >> 11; + char adjprefix = 'M'; + if (adjsize >= (1 << 16)) { + adjsize >>= 10; + adjprefix = 'G'; + } + char model[MAXMODEL+1]; + char *desc = znprintf(MAXDESCSIZE + , "ata%d-%d: %s ATA-%d Hard-Disk (%u %ciBytes)" + , adrive_g->chan_gf->chanid, adrive_g->slave + , ata_extract_model(model, MAXMODEL, buffer) + , ata_extract_version(buffer) + , (u32)adjsize, adjprefix); + dprintf(1, "%s\n", desc); + + int prio = bootprio_find_ata_device(adrive_g->chan_gf->pci_tmp, + adrive_g->chan_gf->chanid, + adrive_g->slave); + // Register with bcv system. + boot_add_hd(&adrive_g->drive, desc, prio); + + return adrive_g; +} - // Look for device - outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH); - outb(0x55, iobase1+ATA_CB_SC); - outb(0xaa, iobase1+ATA_CB_SN); - outb(0xaa, iobase1+ATA_CB_SC); - outb(0x55, iobase1+ATA_CB_SN); - outb(0x55, iobase1+ATA_CB_SC); - outb(0xaa, iobase1+ATA_CB_SN); +static u64 SpinupEnd; - // If we found something - sc = inb(iobase1+ATA_CB_SC); - sn = inb(iobase1+ATA_CB_SN); - - if ( (sc == 0x55) && (sn == 0xaa) ) { - SET_EBDA(ata.devices[device].type,ATA_TYPE_UNKNOWN); - - // reset the channel - ata_reset(device); - - // check for ATA or ATAPI - outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0, iobase1+ATA_CB_DH); - sc = inb(iobase1+ATA_CB_SC); - sn = inb(iobase1+ATA_CB_SN); - if ((sc==0x01) && (sn==0x01)) { - cl = inb(iobase1+ATA_CB_CL); - ch = inb(iobase1+ATA_CB_CH); - st = inb(iobase1+ATA_CB_STAT); - - if ((cl==0x14) && (ch==0xeb)) { - SET_EBDA(ata.devices[device].type,ATA_TYPE_ATAPI); - } else if ((cl==0x00) && (ch==0x00) && (st!=0x00)) { - SET_EBDA(ata.devices[device].type,ATA_TYPE_ATA); - } else if ((cl==0xff) && (ch==0xff)) { - SET_EBDA(ata.devices[device].type,ATA_TYPE_NONE); - } - } +// Wait for non-busy status and check for "floating bus" condition. +static int +powerup_await_non_bsy(u16 base) +{ + u8 orstatus = 0; + u8 status; + for (;;) { + status = inb(base+ATA_CB_STAT); + if (!(status & ATA_CB_STAT_BSY)) + break; + orstatus |= status; + if (orstatus == 0xff) { + dprintf(4, "powerup IDE floating\n"); + return orstatus; } + if (check_tsc(SpinupEnd)) { + warn_timeout(); + return -1; + } + yield(); + } + dprintf(6, "powerup iobase=%x st=%x\n", base, status); + return status; +} - type=GET_EBDA(ata.devices[device].type); - - // Now we send a IDENTIFY command to ATA device - if(type == ATA_TYPE_ATA) { - u32 sectors; - u16 cylinders, heads, spt, blksize; - u8 translation, removable, mode; - - //Temporary values to do the transfer - SET_EBDA(ata.devices[device].device,ATA_DEVICE_HD); - SET_EBDA(ata.devices[device].mode, ATA_MODE_PIO16); - - u16 ret = ata_cmd_data_chs(device, ATA_CMD_IDENTIFY_DEVICE - , 0, 0, 1, 1 - , MAKE_32_PTR(GET_SEG(SS), (u32)buffer)); - if (ret) - BX_PANIC("ata-detect: Failed to detect ATA device\n"); - - removable = (buffer[0] & 0x80) ? 1 : 0; - mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16; - blksize = *(u16*)&buffer[10]; - - cylinders = *(u16*)&buffer[1*2]; // word 1 - heads = *(u16*)&buffer[3*2]; // word 3 - spt = *(u16*)&buffer[6*2]; // word 6 - - sectors = *(u32*)&buffer[60*2]; // word 60 and word 61 - - SET_EBDA(ata.devices[device].device,ATA_DEVICE_HD); - SET_EBDA(ata.devices[device].removable, removable); - SET_EBDA(ata.devices[device].mode, mode); - SET_EBDA(ata.devices[device].blksize, blksize); - SET_EBDA(ata.devices[device].pchs.heads, heads); - SET_EBDA(ata.devices[device].pchs.cylinders, cylinders); - SET_EBDA(ata.devices[device].pchs.spt, spt); - SET_EBDA(ata.devices[device].sectors, sectors); - BX_INFO("ata%d-%d: PCHS=%u/%d/%d translation=" - , channel, slave,cylinders, heads, spt); - - translation = inb_cmos(CMOS_BIOS_DISKTRANSFLAG + channel/2); - for (shift=device%4; shift>0; shift--) - translation >>= 2; - translation &= 0x03; - - SET_EBDA(ata.devices[device].translation, translation); - - switch (translation) { - case ATA_TRANSLATION_NONE: - BX_INFO("none"); - break; - case ATA_TRANSLATION_LBA: - BX_INFO("lba"); - break; - case ATA_TRANSLATION_LARGE: - BX_INFO("large"); - break; - case ATA_TRANSLATION_RECHS: - BX_INFO("r-echs"); - break; - } - switch (translation) { - case ATA_TRANSLATION_NONE: - break; - case ATA_TRANSLATION_LBA: - spt = 63; - sectors /= 63; - heads = sectors / 1024; - if (heads>128) heads = 255; - else if (heads>64) heads = 128; - else if (heads>32) heads = 64; - else if (heads>16) heads = 32; - else heads=16; - cylinders = sectors / heads; - break; - case ATA_TRANSLATION_RECHS: - // Take care not to overflow - if (heads==16) { - if(cylinders>61439) cylinders=61439; - heads=15; - cylinders = (u16)((u32)(cylinders)*16/15); - } - // then go through the large bitshift process - case ATA_TRANSLATION_LARGE: - while(cylinders > 1024) { - cylinders >>= 1; - heads <<= 1; - - // If we max out the head count - if (heads > 127) break; - } - break; - } - // clip to 1024 cylinders in lchs - if (cylinders > 1024) - cylinders=1024; - BX_INFO(" LCHS=%d/%d/%d\n", cylinders, heads, spt); - - SET_EBDA(ata.devices[device].lchs.heads, heads); - SET_EBDA(ata.devices[device].lchs.cylinders, cylinders); - SET_EBDA(ata.devices[device].lchs.spt, spt); - - // fill hdidmap - SET_EBDA(ata.idmap[0][hdcount], device); - hdcount++; +// Detect any drives attached to a given controller. +static void +ata_detect(void *data) +{ + struct ata_channel_s *chan_gf = data; + struct atadrive_s dummy; + memset(&dummy, 0, sizeof(dummy)); + dummy.chan_gf = chan_gf; + // Device detection + int didreset = 0; + u8 slave; + for (slave=0; slave<=1; slave++) { + // Wait for not-bsy. + u16 iobase1 = chan_gf->iobase1; + int status = powerup_await_non_bsy(iobase1); + if (status < 0) + continue; + u8 newdh = slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0; + outb(newdh, iobase1+ATA_CB_DH); + ndelay(400); + status = powerup_await_non_bsy(iobase1); + if (status < 0) + continue; + + // Check if ioport registers look valid. + outb(newdh, iobase1+ATA_CB_DH); + u8 dh = inb(iobase1+ATA_CB_DH); + outb(0x55, iobase1+ATA_CB_SC); + outb(0xaa, iobase1+ATA_CB_SN); + u8 sc = inb(iobase1+ATA_CB_SC); + u8 sn = inb(iobase1+ATA_CB_SN); + dprintf(6, "ata_detect ata%d-%d: sc=%x sn=%x dh=%x\n" + , chan_gf->chanid, slave, sc, sn, dh); + if (sc != 0x55 || sn != 0xaa || dh != newdh) + continue; + + // Prepare new drive. + dummy.slave = slave; + + // reset the channel + if (!didreset) { + ata_reset(&dummy); + didreset = 1; } - // Now we send a IDENTIFY command to ATAPI device - if(type == ATA_TYPE_ATAPI) { + // check for ATAPI + u16 buffer[256]; + struct atadrive_s *adrive_g = init_drive_atapi(&dummy, buffer); + if (!adrive_g) { + // Didn't find an ATAPI drive - look for ATA drive. + u8 st = inb(iobase1+ATA_CB_STAT); + if (!st) + // Status not set - can't be a valid drive. + continue; + + // Wait for RDY. + int ret = await_rdy(iobase1); + if (ret < 0) + continue; + + // check for ATA. + adrive_g = init_drive_ata(&dummy, buffer); + if (!adrive_g) + // No ATA drive found + continue; + } - u8 type, removable, mode; - u16 blksize; + u16 resetresult = buffer[93]; + dprintf(6, "ata_detect resetresult=%04x\n", resetresult); + if (!slave && (resetresult & 0xdf61) == 0x4041) + // resetresult looks valid and device 0 is responding to + // device 1 requests - device 1 must not be present - skip + // detection. + break; + } +} - //Temporary values to do the transfer - SET_EBDA(ata.devices[device].device,ATA_DEVICE_CDROM); - SET_EBDA(ata.devices[device].mode, ATA_MODE_PIO16); +// Initialize an ata controller and detect its drives. +static void +init_controller(struct pci_device *pci, int irq + , u32 port1, u32 port2, u32 master) +{ + static int chanid = 0; + struct ata_channel_s *chan_gf = malloc_fseg(sizeof(*chan_gf)); + if (!chan_gf) { + warn_noalloc(); + return; + } + chan_gf->chanid = chanid++; + chan_gf->irq = irq; + chan_gf->pci_bdf = pci ? pci->bdf : -1; + chan_gf->pci_tmp = pci; + chan_gf->iobase1 = port1; + chan_gf->iobase2 = port2; + chan_gf->iomaster = master; + dprintf(1, "ATA controller %d at %x/%x/%x (irq %d dev %x)\n" + , chanid, port1, port2, master, irq, chan_gf->pci_bdf); + run_thread(ata_detect, chan_gf); +} - u16 ret = ata_cmd_data_chs(device, ATA_CMD_IDENTIFY_DEVICE_PACKET - , 0, 0, 1, 1 - , MAKE_32_PTR(GET_SEG(SS), (u32)buffer)); - if (ret != 0) - BX_PANIC("ata-detect: Failed to detect ATAPI device\n"); +#define IRQ_ATA1 14 +#define IRQ_ATA2 15 - type = buffer[1] & 0x1f; - removable = (buffer[0] & 0x80) ? 1 : 0; - mode = buffer[96] ? ATA_MODE_PIO32 : ATA_MODE_PIO16; - blksize = 2048; +// Handle controllers on an ATA PCI device. +static void +init_pciata(struct pci_device *pci, u8 prog_if) +{ + pci->have_driver = 1; + u16 bdf = pci->bdf; + u8 pciirq = pci_config_readb(bdf, PCI_INTERRUPT_LINE); + int master = 0; + if (CONFIG_ATA_DMA && prog_if & 0x80) { + // Check for bus-mastering. + u32 bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_4); + if (bar & PCI_BASE_ADDRESS_SPACE_IO) { + master = bar & PCI_BASE_ADDRESS_IO_MASK; + pci_config_maskw(bdf, PCI_COMMAND, 0, PCI_COMMAND_MASTER); + } + } - SET_EBDA(ata.devices[device].device, type); - SET_EBDA(ata.devices[device].removable, removable); - SET_EBDA(ata.devices[device].mode, mode); - SET_EBDA(ata.devices[device].blksize, blksize); + u32 port1, port2, irq; + if (prog_if & 1) { + port1 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_0) + & PCI_BASE_ADDRESS_IO_MASK); + port2 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_1) + & PCI_BASE_ADDRESS_IO_MASK); + irq = pciirq; + } else { + port1 = PORT_ATA1_CMD_BASE; + port2 = PORT_ATA1_CTRL_BASE; + irq = IRQ_ATA1; + } + init_controller(pci, irq, port1, port2, master); + + if (prog_if & 4) { + port1 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_2) + & PCI_BASE_ADDRESS_IO_MASK); + port2 = (pci_config_readl(bdf, PCI_BASE_ADDRESS_3) + & PCI_BASE_ADDRESS_IO_MASK); + irq = pciirq; + } else { + port1 = PORT_ATA2_CMD_BASE; + port2 = PORT_ATA2_CTRL_BASE; + irq = IRQ_ATA2; + } + init_controller(pci, irq, port1, port2, master ? master + 8 : 0); +} - // fill cdidmap - SET_EBDA(ata.idmap[1][cdcount], device); - cdcount++; - } +static void +found_genericata(struct pci_device *pci, void *arg) +{ + init_pciata(pci, pci->prog_if); +} - u32 sizeinmb = 0; - u16 ataversion; - u8 c, i, version=0, model[41]; - - switch (type) { - case ATA_TYPE_ATA: - sizeinmb = GET_EBDA(ata.devices[device].sectors); - sizeinmb >>= 11; - case ATA_TYPE_ATAPI: - // Read ATA/ATAPI version - ataversion=((u16)(buffer[161])<<8) | buffer[160]; - for(version=15;version>0;version--) { - if ((ataversion&(1<0;i--) { - if (model[i]==0x20) - model[i] = 0x00; - else - break; - } - break; - } +// Locate and init ata controllers. +static void +ata_init(void) +{ + if (!CONFIG_COREBOOT && !PCIDevices) { + // No PCI devices found - probably a QEMU "-M isapc" machine. + // Try using ISA ports for ATA controllers. + init_controller(NULL, IRQ_ATA1 + , PORT_ATA1_CMD_BASE, PORT_ATA1_CTRL_BASE, 0); + init_controller(NULL, IRQ_ATA2 + , PORT_ATA2_CMD_BASE, PORT_ATA2_CTRL_BASE, 0); + return; + } - switch (type) { - case ATA_TYPE_ATA: - printf("ata%d %s: ",channel,slave?" slave":"master"); - i=0; - while ((c=model[i++])) - printf("%c",c); - if (sizeinmb < (1UL<<16)) - printf(" ATA-%d Hard-Disk (%u MBytes)\n", version, (u16)sizeinmb); - else - printf(" ATA-%d Hard-Disk (%u GBytes)\n", version, (u16)(sizeinmb>>10)); - break; - case ATA_TYPE_ATAPI: - printf("ata%d %s: ",channel,slave?" slave":"master"); - i=0; - while ((c=model[i++])) - printf("%c",c); - if (GET_EBDA(ata.devices[device].device)==ATA_DEVICE_CDROM) - printf(" ATAPI-%d CD-Rom/DVD-Rom\n",version); - else - printf(" ATAPI-%d Device\n",version); - break; - case ATA_TYPE_UNKNOWN: - printf("ata%d %s: Unknown device\n",channel,slave?" slave":"master"); - break; - } + // Scan PCI bus for ATA adapters + struct pci_device *pci; + foreachpci(pci) { + pci_init_device(pci_ata_tbl, pci, NULL); } +} + +void +ata_setup(void) +{ + ASSERT32FLAT(); + if (!CONFIG_ATA) + return; + + dprintf(3, "init hard drives\n"); - // Store the devices counts - SET_EBDA(ata.hdcount, hdcount); - SET_EBDA(ata.cdcount, cdcount); - SET_BDA(disk_count, hdcount); + SpinupEnd = calc_future_tsc(IDE_TIMEOUT); + ata_init(); - printf("\n"); + SET_BDA(disk_control_byte, 0xc0); - // FIXME : should use bios=cmos|auto|disable bits - // FIXME : should know about translation bits - // FIXME : move hard_drive_post here + enable_hwirq(14, FUNC16(entry_76)); }