diff options
Diffstat (limited to 'src/VBox/Devices/PC/BIOS/ata.c')
| -rw-r--r-- | src/VBox/Devices/PC/BIOS/ata.c | 1233 |
1 files changed, 1233 insertions, 0 deletions
diff --git a/src/VBox/Devices/PC/BIOS/ata.c b/src/VBox/Devices/PC/BIOS/ata.c new file mode 100644 index 00000000..d5fff261 --- /dev/null +++ b/src/VBox/Devices/PC/BIOS/ata.c @@ -0,0 +1,1233 @@ +/* $Id: ata.c $ */ +/** @file + * PC BIOS - ATA disk support. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + * -------------------------------------------------------------------- + * + * This code is based on: + * + * ROM BIOS for use with Bochs/Plex86/QEMU emulation environment + * + * Copyright (C) 2002 MandrakeSoft S.A. + * + * MandrakeSoft S.A. + * 43, rue d'Aboukir + * 75002 Paris - France + * http://www.linux-mandrake.com/ + * http://www.mandrakesoft.com/ + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +/* + * Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice + * other than GPL or LGPL is available it will apply instead, Oracle elects to use only + * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where + * a choice of LGPL license versions is made available with the language indicating + * that LGPLv2 or any later version may be used, or where a choice of which version + * of the LGPL is applied is otherwise unspecified. + */ + + +#include <stdint.h> +#include <stdarg.h> +#include "inlines.h" +#include "biosint.h" +#include "ebda.h" +#include "ata.h" +#include "pciutil.h" + + +#if DEBUG_ATA +# define BX_DEBUG_ATA(...) BX_DEBUG(__VA_ARGS__) +#else +# define BX_DEBUG_ATA(...) +#endif + + +// --------------------------------------------------------------------------- +// Start of ATA/ATAPI Driver +// --------------------------------------------------------------------------- + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : initialization +// --------------------------------------------------------------------------- +void BIOSCALL ata_init(void) +{ + uint8_t channel, device; + bio_dsk_t __far *bios_dsk; + + bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk; + + // Channels info init. + for (channel=0; channel<BX_MAX_ATA_INTERFACES; channel++) { + bios_dsk->channels[channel].iface = ATA_IFACE_NONE; + bios_dsk->channels[channel].iobase1 = 0x0; + bios_dsk->channels[channel].iobase2 = 0x0; + bios_dsk->channels[channel].irq = 0; + } + + // Devices info init. + for (device=0; device<BX_MAX_ATA_DEVICES; device++) { + bios_dsk->devices[device].type = DSK_TYPE_NONE; + bios_dsk->devices[device].device = DSK_DEVICE_NONE; + bios_dsk->devices[device].removable = 0; + bios_dsk->devices[device].lock = 0; + bios_dsk->devices[device].mode = ATA_MODE_NONE; + bios_dsk->devices[device].blksize = 0x200; + bios_dsk->devices[device].translation = GEO_TRANSLATION_NONE; + bios_dsk->devices[device].lchs.heads = 0; + bios_dsk->devices[device].lchs.cylinders = 0; + bios_dsk->devices[device].lchs.spt = 0; + bios_dsk->devices[device].pchs.heads = 0; + bios_dsk->devices[device].pchs.cylinders = 0; + bios_dsk->devices[device].pchs.spt = 0; + bios_dsk->devices[device].sectors = 0; + } + + // hdidmap and cdidmap init. + for (device=0; device<BX_MAX_STORAGE_DEVICES; device++) { + bios_dsk->hdidmap[device] = BX_MAX_STORAGE_DEVICES; + bios_dsk->cdidmap[device] = BX_MAX_STORAGE_DEVICES; + } + + bios_dsk->hdcount = 0; + bios_dsk->cdcount = 0; +} + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : software reset +// --------------------------------------------------------------------------- +// ATA-3 +// 8.2.1 Software reset - Device 0 + +void ata_reset(uint16_t device) +{ + uint16_t iobase1, iobase2; + uint8_t channel, slave, sn, sc; + uint16_t max; + uint16_t pdelay; + bio_dsk_t __far *bios_dsk; + + bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk; + channel = device / 2; + slave = device % 2; + + iobase1 = bios_dsk->channels[channel].iobase1; + iobase2 = bios_dsk->channels[channel].iobase2; + + // Reset + + // 8.2.1 (a) -- set SRST in DC + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN | ATA_CB_DC_SRST); + + // 8.2.1 (b) -- wait for BSY + max=0xff; + while(--max>0) { + uint8_t status = inb(iobase1+ATA_CB_STAT); + if ((status & ATA_CB_STAT_BSY) != 0) + break; + } + + // 8.2.1 (f) -- clear SRST + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN); + + // 8.2.1 (h) -- wait for not BSY + max=0xffff; /* The ATA specification says that the drive may be busy for up to 30 seconds. */ + while(--max>0) { + uint8_t status = inb(iobase1+ATA_CB_STAT); + if ((status & ATA_CB_STAT_BSY) == 0) + break; + pdelay=0xffff; + while (--pdelay>0) { + /* nothing */ + } + } + + if (bios_dsk->devices[device].type != DSK_TYPE_NONE) { + // 8.2.1 (g) -- check for sc==sn==0x01 + // select device + outb(iobase1+ATA_CB_DH, slave?ATA_CB_DH_DEV1:ATA_CB_DH_DEV0); + sc = inb(iobase1+ATA_CB_SC); + sn = inb(iobase1+ATA_CB_SN); + + if ( (sc==0x01) && (sn==0x01) ) { + // 8.2.1 (i) -- wait for DRDY + max = 0x10; /* Speed up for virtual drives. Disks are immediately ready, CDs never */ + while(--max>0) { + uint8_t status = inb(iobase1+ATA_CB_STAT); + if ((status & ATA_CB_STAT_RDY) != 0) + break; + } + } + } + + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); +} + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : execute a data-in 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 +uint16_t ata_cmd_data_in(bio_dsk_t __far *bios_dsk, uint16_t command, uint16_t count) +{ + uint16_t iobase1, iobase2, blksize, mult_blk_cnt; + uint16_t cylinder; + uint8_t head; + uint8_t sector; + uint8_t device; + uint8_t status, mode; + char __far *buffer; + + device = bios_dsk->drqp.dev_id; + + iobase1 = bios_dsk->channels[device / 2].iobase1; + iobase2 = bios_dsk->channels[device / 2].iobase2; + mode = bios_dsk->devices[device].mode; + blksize = bios_dsk->devices[device].blksize; + if (blksize == 0) { /* If transfer size is exactly 64K */ +#if VBOX_BIOS_CPU >= 80386 + if (mode == ATA_MODE_PIO32) + blksize = 0x4000; + else +#endif + blksize = 0x8000; + } else { +#if VBOX_BIOS_CPU >= 80386 + if (mode == ATA_MODE_PIO32) + blksize >>= 2; + else +#endif + blksize >>= 1; + } + + status = inb(iobase1 + ATA_CB_STAT); + if (status & ATA_CB_STAT_BSY) + { + BX_DEBUG_ATA("%s: disk busy\n", __func__); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 1; + } + + buffer = bios_dsk->drqp.buffer; + sector = bios_dsk->drqp.sector; + cylinder = bios_dsk->drqp.cylinder; + head = bios_dsk->drqp.head; + + // sector will be 0 only on lba access. Convert to lba-chs + if (sector == 0) { + if (bios_dsk->drqp.lba + count >= 268435456) + { + sector = (bios_dsk->drqp.lba >> 24) & 0x00ff; + cylinder = (bios_dsk->drqp.lba >> 32) & 0xffff; + outb(iobase1 + ATA_CB_SC, (count & 0xff00) >> 8); + outb(iobase1 + ATA_CB_SN, sector); + outb(iobase1 + ATA_CB_CL, cylinder & 0x00ff); + outb(iobase1 + ATA_CB_CH, cylinder >> 8); + /* Leave the bottom 24 bits as is, they are treated correctly by the + * LBA28 code path. */ + } + sector = bios_dsk->drqp.lba & 0x000000ffL; + cylinder = (bios_dsk->drqp.lba >> 8) & 0x0000ffffL; + head = ((bios_dsk->drqp.lba >> 24) & 0x0000000fL) | 0x40; + } + + outb(iobase2 + ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN); + outb(iobase1 + ATA_CB_FR, 0x00); + outb(iobase1 + ATA_CB_SC, count); + outb(iobase1 + ATA_CB_SN, sector); + outb(iobase1 + ATA_CB_CL, cylinder & 0x00ff); + outb(iobase1 + ATA_CB_CH, cylinder >> 8); + outb(iobase1 + ATA_CB_DH, ((device & 1) ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0) | head ); + outb(iobase1 + ATA_CB_CMD, command); + + if (command == ATA_CMD_READ_MULTIPLE || command == ATA_CMD_READ_MULTIPLE_EXT) { + mult_blk_cnt = count; + count = 1; + } else { + mult_blk_cnt = 1; + } + + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) + break; + } + + if (status & ATA_CB_STAT_ERR) { + BX_DEBUG_ATA("%s: read error\n", __func__); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 2; + } else if ( !(status & ATA_CB_STAT_DRQ) ) { + BX_DEBUG_ATA("%s: DRQ not set (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 3; + } + + // FIXME : move seg/off translation here + + int_enable(); // enable higher priority interrupts + + while (1) { + + // adjust if there will be an overrun. 2K max sector size + if (FP_OFF(buffer) >= 0xF800) + buffer = MK_FP(FP_SEG(buffer) + 0x80, FP_OFF(buffer) - 0x800); + +#if VBOX_BIOS_CPU >= 80386 + if (mode == ATA_MODE_PIO32) + buffer = rep_insd(buffer, blksize, iobase1); + else +#endif + buffer = rep_insw(buffer, blksize, iobase1); + bios_dsk->drqp.trsfsectors += mult_blk_cnt; + count--; + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) + break; + } + if (count == 0) { + if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR) ) + != ATA_CB_STAT_RDY ) { + BX_DEBUG_ATA("%s: no sectors left (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 4; + } + break; + } + else { + if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR) ) + != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ) ) { + BX_DEBUG_ATA("%s: more sectors left (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 5; + } + continue; + } + } + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 0; +} + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : device detection +// --------------------------------------------------------------------------- + +int ata_signature(uint16_t iobase1, uint8_t channel, uint8_t slave) +{ + int dsk_type = DSK_TYPE_NONE; + uint8_t sc, sn, st, cl, ch; + + /* + * Wait for BSY=0 so that the signature can be read. We already determined that + * an ATA interface is present, and rely on the fact that for non-existent + * devices, the BSY bit will always be clear. + */ + outb(iobase1+ATA_CB_DH, slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0); + do { + st = inb(iobase1+ATA_CB_STAT); + } while (st & ATA_CB_STAT_BSY); + + /* + * Look for ATA/ATAPI signature. Fun Fact #1: If there's a Device 1 but no + * Device 0, Device 1 can't tell and does not respond for it. Accessing + * non-existent Device 0 behaves the same regardless of whether Device 1 + * is present or not. + */ + sc = inb(iobase1+ATA_CB_SC); + sn = inb(iobase1+ATA_CB_SN); + if ((sc == 1) && (sn == 1)) { + cl = inb(iobase1+ATA_CB_CL); + ch = inb(iobase1+ATA_CB_CH); + + /* + * Fun fact #2: If Device 0 responds for Device 1, an ATA device generally + * returns the values of its own registers, while an ATAPI device returns + * zeros. In both cases, the Status register is read as zero. + */ + if ((cl == 0x14) && (ch == 0xEB)) { + dsk_type = DSK_TYPE_ATAPI; + BX_DEBUG_ATA("ata%d-%d: ATAPI device\n", channel, slave); + } else if ((cl == 0) && (ch == 0)) { + if (st != 0) { + dsk_type = DSK_TYPE_ATA; + BX_DEBUG_ATA("ata%d-%d: ATA device\n", channel, slave); + } else { + BX_DEBUG_ATA("ata%d-%d: ATA master responding for slave\n", channel, slave); + } + } else { + dsk_type = DSK_TYPE_UNKNOWN; + BX_DEBUG_ATA("ata%d-%d: something else (%02X/%02X/%02X)\n", channel, slave, cl, ch, st); + } + } else /* Possibly ATAPI Device 0 responding for Device 1. */ + BX_DEBUG_ATA("ata%d-%d: bad sc/sn signature (%02X/%02X)\n", channel, slave, sc, sn); + + return dsk_type; +} + +void BIOSCALL ata_detect(void) +{ + uint16_t ebda_seg = read_word(0x0040,0x000E); + uint8_t hdcount, cdcount, device, type; + uint8_t buffer[0x0200]; + bio_dsk_t __far *bios_dsk; + + /* If we have PCI support, look for an IDE controller (it has to be a PCI device) + * so that we can skip silly probing. If there's no PCI, assume IDE is present. + * + * Needs an internal PCI function because the Programming Interface byte can be + * almost anything, and we conly care about the base-class and sub-class code. + */ +#if VBOX_BIOS_CPU >= 80386 + uint16_t busdevfn; + + busdevfn = pci_find_class_noif(0x0101); + if (busdevfn == 0xffff) { + BX_INFO("No PCI IDE controller, not probing IDE\n"); + return; + } +#endif + + bios_dsk = ebda_seg :> &EbdaData->bdisk; + +#if BX_MAX_ATA_INTERFACES > 0 + bios_dsk->channels[0].iface = ATA_IFACE_ISA; + bios_dsk->channels[0].iobase1 = 0x1f0; + bios_dsk->channels[0].iobase2 = 0x3f0; + bios_dsk->channels[0].irq = 14; +#endif +#if BX_MAX_ATA_INTERFACES > 1 + bios_dsk->channels[1].iface = ATA_IFACE_ISA; + bios_dsk->channels[1].iobase1 = 0x170; + bios_dsk->channels[1].iobase2 = 0x370; + bios_dsk->channels[1].irq = 15; +#endif +#if BX_MAX_ATA_INTERFACES > 2 + bios_dsk->channels[2].iface = ATA_IFACE_ISA; + bios_dsk->channels[2].iobase1 = 0x1e8; + bios_dsk->channels[2].iobase2 = 0x3e0; + bios_dsk->channels[2].irq = 12; +#endif +#if BX_MAX_ATA_INTERFACES > 3 + bios_dsk->channels[3].iface = ATA_IFACE_ISA; + bios_dsk->channels[3].iobase1 = 0x168; + bios_dsk->channels[3].iobase2 = 0x360; + bios_dsk->channels[3].irq = 11; +#endif +#if BX_MAX_ATA_INTERFACES > 4 +#error Please fill the ATA interface information +#endif + + // Device detection + hdcount = cdcount = 0; + + for (device = 0; device < BX_MAX_ATA_DEVICES; device++) { + uint16_t iobase1, iobase2; + uint16_t retries; + uint8_t channel, slave; + uint8_t st; + + channel = device / 2; + slave = device % 2; + + iobase1 = bios_dsk->channels[channel].iobase1; + iobase2 = bios_dsk->channels[channel].iobase2; + + /* + * Here we are in a tricky situation. We do not know if an ATA + * interface is even present at a given address. If it is present, + * we don't know if a device is present. We also need to consider + * the case of only a slave device being present, which does not + * respond for the missing master device. If a device is present, + * it may be still powering up or processing reset, which means it + * may be busy. + * + * If a device is busy, we can't reliably write any registers, and + * reads will return the Status register. If the Status register + * value is 0FFh, there might be no ATA controller at all, or it + * might be a busy drive. Fortunately we know that our own devices + * never return such a value when busy, and we use that knowledge + * to detect non-existent interfaces. + * + * We also know that our ATA interface will not return 0FFh even when + * no device is present on a given channel. This knowledge is handy + * when only a slave device exists because we won't read 0FFh and + * think there is no ATA interface at all. + */ + + st = inb(iobase1+ATA_CB_STAT); + BX_DEBUG_ATA("ata%d-%d: Status=%02X\n", channel, slave, st); + if (st == 0xff) + continue; + + /* + * Perform a software reset by setting and clearing the SRST bit. This + * can be done at any time, and forces device signature into the task file + * registers. If present, both devices are reset at once, so we only do + * this once per channel. + */ + if (!slave) { + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN | ATA_CB_DC_SRST); + + /* + * Ensure reasonable SRST pulse width, but do not wait long for + * non-existent devices. + */ + retries = 32; + while (--retries > 0) { + st = inb(iobase1+ATA_CB_STAT); + if (st & ATA_CB_STAT_BSY) + break; + } + + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN); + + /* After reset, device signature will be placed in registers. But + * executing any commands will overwrite it for Device 1. So that + * we don't have to reset twice, look for both Device 0 and Device 1 + * signatures here right after reset. + */ + bios_dsk->devices[device + 0].type = ata_signature(iobase1, channel, 0); + bios_dsk->devices[device + 1].type = ata_signature(iobase1, channel, 1); + } + + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + + type = bios_dsk->devices[device].type; + + // Now we send a IDENTIFY command to ATA device + if (type == DSK_TYPE_ATA) { + uint64_t sectors; + uint16_t cylinders, heads, spt, blksize; + chs_t lgeo; + uint8_t chsgeo_base; + uint8_t removable, mode; + + //Temporary values to do the transfer + bios_dsk->devices[device].device = DSK_DEVICE_HD; + bios_dsk->devices[device].mode = ATA_MODE_PIO16; + bios_dsk->drqp.buffer = buffer; + bios_dsk->drqp.dev_id = device; + + if (ata_cmd_data_in(bios_dsk, ATA_CMD_IDENTIFY_DEVICE, 1) !=0 ) + BX_PANIC("ata-detect: Failed to detect ATA device\n"); + + removable = (*(buffer+0) & 0x80) ? 1 : 0; +#if VBOX_BIOS_CPU >= 80386 + mode = *(buffer+96) ? ATA_MODE_PIO32 : ATA_MODE_PIO16; +#else + mode = ATA_MODE_PIO16; +#endif + blksize = 512; /* There is no sector size field any more. */ + + cylinders = *(uint16_t *)(buffer+(1*2)); // word 1 + heads = *(uint16_t *)(buffer+(3*2)); // word 3 + spt = *(uint16_t *)(buffer+(6*2)); // word 6 + + sectors = *(uint32_t *)(buffer+(60*2)); // word 60 and word 61 + if (sectors == 0x0FFFFFFF) /* For disks bigger than ~128GB */ + sectors = *(uint64_t *)(buffer+(100*2)); // words 100 to 103 + switch (device) + { + case 0: + chsgeo_base = 0x1e; + break; + case 1: + chsgeo_base = 0x26; + break; + case 2: + chsgeo_base = 0x67; + break; + case 3: + chsgeo_base = 0x70; + break; + default: + chsgeo_base = 0; + } + if (chsgeo_base) + { + lgeo.cylinders = get_cmos_word(chsgeo_base /*, chsgeo_base + 1*/); + lgeo.heads = inb_cmos(chsgeo_base + 2); + lgeo.spt = inb_cmos(chsgeo_base + 7); + } + else + set_geom_lba(&lgeo, sectors); /* Default EDD-style translated LBA geometry. */ + + BX_INFO("ata%d-%d: PCHS=%u/%u/%u LCHS=%u/%u/%u\n", channel, slave, + cylinders, heads, spt, lgeo.cylinders, lgeo.heads, lgeo.spt); + + bios_dsk->devices[device].device = DSK_DEVICE_HD; + bios_dsk->devices[device].removable = removable; + bios_dsk->devices[device].mode = mode; + bios_dsk->devices[device].blksize = blksize; + bios_dsk->devices[device].pchs.heads = heads; + bios_dsk->devices[device].pchs.cylinders = cylinders; + bios_dsk->devices[device].pchs.spt = spt; + bios_dsk->devices[device].sectors = sectors; + bios_dsk->devices[device].lchs = lgeo; + if (device < 2) + { + uint8_t sum, i; + fdpt_t __far *fdpt; + void __far * __far *int_vec; + + if (device == 0) + fdpt = ebda_seg :> &EbdaData->fdpt0; + else + fdpt = ebda_seg :> &EbdaData->fdpt1; + +#if 0 + /* Place the FDPT outside of conventional memory. Needed for + * 286 XENIX 2.1.3/2.2.1 because it completely wipes out + * the EBDA and low memory. Hack! + */ + fdpt = MK_FP(0xE200, 0xf00); + fdpt += device; +#endif + + /* Set the INT 41h or 46h pointer. */ + int_vec = MK_FP(0, (0x41 + device * 5) * sizeof(void __far *)); + *int_vec = fdpt; + + /* Update the DPT for drive 0/1 pointed to by Int41/46. This used + * to be done at POST time with lots of ugly assembler code, which + * isn't worth the effort of converting from AMI to Award CMOS + * format. Just do it here. */ + fdpt->resvd1 = fdpt->resvd2 = 0; + + fdpt->lcyl = lgeo.cylinders; + fdpt->lhead = lgeo.heads; + fdpt->sig = 0xa0; + fdpt->spt = spt; + fdpt->cyl = cylinders; + fdpt->head = heads; + fdpt->lspt = lgeo.spt; + sum = 0; + for (i = 0; i < 0xf; i++) + sum += *((uint8_t __far *)fdpt + i); + sum = -sum; + fdpt->csum = sum; + } + + // fill hdidmap + bios_dsk->hdidmap[hdcount] = device; + hdcount++; + } + + // Now we send an IDENTIFY command to ATAPI device + if (type == DSK_TYPE_ATAPI) { + uint8_t type, removable, mode; + uint16_t blksize; + + // Temporary values to do the transfer + bios_dsk->devices[device].device = DSK_DEVICE_CDROM; + bios_dsk->devices[device].mode = ATA_MODE_PIO16; + bios_dsk->drqp.buffer = buffer; + bios_dsk->drqp.dev_id = device; + + if (ata_cmd_data_in(bios_dsk, ATA_CMD_IDENTIFY_PACKET, 1) != 0) + BX_PANIC("ata-detect: Failed to detect ATAPI device\n"); + + type = *(buffer+1) & 0x1f; + removable = (*(buffer+0) & 0x80) ? 1 : 0; +#if VBOX_BIOS_CPU >= 80386 + mode = *(buffer+96) ? ATA_MODE_PIO32 : ATA_MODE_PIO16; +#else + mode = ATA_MODE_PIO16; +#endif + blksize = 2048; + + bios_dsk->devices[device].device = type; + bios_dsk->devices[device].removable = removable; + bios_dsk->devices[device].mode = mode; + bios_dsk->devices[device].blksize = blksize; + + // fill cdidmap + bios_dsk->cdidmap[cdcount] = device; + cdcount++; + } + + { + uint32_t sizeinmb; + uint16_t ataversion; + uint8_t version, model[41]; + int i; + + switch (type) { + case DSK_TYPE_ATA: + sizeinmb = (bios_dsk->devices[device].sectors >> 11); + case DSK_TYPE_ATAPI: + // Read ATA/ATAPI version + ataversion = ((uint16_t)(*(buffer+161))<<8) | *(buffer+160); + for (version = 15; version > 0; version--) { + if ((ataversion & (1 << version)) !=0 ) + break; + } + + // Read model name + for (i = 0; i < 20; i++ ) { + *(model+(i*2)) = *(buffer+(i*2)+54+1); + *(model+(i*2)+1) = *(buffer+(i*2)+54); + } + + // Reformat + *(model+40) = 0x00; + for ( i = 39; i > 0; i-- ){ + if (*(model+i) == 0x20) + *(model+i) = 0x00; + else + break; + } + break; + } + +#ifdef VBOXz + // we don't want any noisy output for now +#else /* !VBOX */ + switch (type) { + int c; + case DSK_TYPE_ATA: + printf("ata%d %s: ", channel, slave ? " slave" : "master"); + i=0; + while(c=*(model+i++)) + printf("%c", c); + printf(" ATA-%d Hard-Disk (%lu MBytes)\n", version, sizeinmb); + break; + case DSK_TYPE_ATAPI: + printf("ata%d %s: ", channel, slave ? " slave" : "master"); + i=0; + while(c=*(model+i++)) + printf("%c", c); + if (bios_dsk->devices[device].device == DSK_DEVICE_CDROM) + printf(" ATAPI-%d CD-ROM/DVD-ROM\n", version); + else + printf(" ATAPI-%d Device\n", version); + break; + case DSK_TYPE_UNKNOWN: + printf("ata%d %s: Unknown device\n", channel , slave ? " slave" : "master"); + break; + } +#endif /* !VBOX */ + } + } + + // Store the devices counts + bios_dsk->hdcount = hdcount; + bios_dsk->cdcount = cdcount; + write_byte(0x40,0x75, hdcount); + +#ifdef VBOX + // we don't want any noisy output for now +#else /* !VBOX */ + printf("\n"); +#endif /* !VBOX */ + + // FIXME : should use bios=cmos|auto|disable bits + // FIXME : should know about translation bits + // FIXME : move hard_drive_post here + +} + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : execute a data-out 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 +uint16_t ata_cmd_data_out(bio_dsk_t __far *bios_dsk, uint16_t command, uint16_t count) +{ + uint64_t lba; + char __far *buffer; + uint16_t iobase1, iobase2, blksize; + uint16_t cylinder; + uint16_t head; + uint16_t sector; + uint16_t device; + uint8_t channel, slave; + uint8_t status, mode; + + device = bios_dsk->drqp.dev_id; + channel = device / 2; + slave = device % 2; + + iobase1 = bios_dsk->channels[channel].iobase1; + iobase2 = bios_dsk->channels[channel].iobase2; + mode = bios_dsk->devices[device].mode; + blksize = 0x200; // was = bios_dsk->devices[device].blksize; +#if VBOX_BIOS_CPU >= 80386 + if (mode == ATA_MODE_PIO32) + blksize >>= 2; + else +#endif + blksize >>= 1; + + status = inb(iobase1 + ATA_CB_STAT); + if (status & ATA_CB_STAT_BSY) + { + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 1; + } + + lba = bios_dsk->drqp.lba; + buffer = bios_dsk->drqp.buffer; + sector = bios_dsk->drqp.sector; + cylinder = bios_dsk->drqp.cylinder; + head = bios_dsk->drqp.head; + + // sector will be 0 only on lba access. Convert to lba-chs + if (sector == 0) { + if (lba + count >= 268435456) + { + sector = (lba >> 24) & 0x00ff; + cylinder = (lba >> 32) & 0xffff; + outb(iobase1 + ATA_CB_SC, (count & 0xff00) >> 8); + outb(iobase1 + ATA_CB_SN, sector); + outb(iobase1 + ATA_CB_CL, cylinder & 0x00ff); + outb(iobase1 + ATA_CB_CH, cylinder >> 8); + /* Leave the bottom 24 bits as is, they are treated correctly by the + * LBA28 code path. */ + lba &= 0xffffff; + } + sector = (uint16_t) (lba & 0x000000ffL); + lba >>= 8; + cylinder = (uint16_t) (lba & 0x0000ffffL); + lba >>= 16; + head = ((uint16_t) (lba & 0x0000000fL)) | 0x40; + } + + outb(iobase2 + ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN); + outb(iobase1 + ATA_CB_FR, 0x00); + outb(iobase1 + ATA_CB_SC, count); + outb(iobase1 + ATA_CB_SN, sector); + outb(iobase1 + ATA_CB_CL, cylinder & 0x00ff); + outb(iobase1 + ATA_CB_CH, cylinder >> 8); + outb(iobase1 + ATA_CB_DH, (slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0) | (uint8_t) head ); + outb(iobase1 + ATA_CB_CMD, command); + + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) + break; + } + + if (status & ATA_CB_STAT_ERR) { + BX_DEBUG_ATA("%s: write error\n", __func__); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 2; + } else if ( !(status & ATA_CB_STAT_DRQ) ) { + BX_DEBUG_ATA("%s: DRQ not set (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 3; + } + + // FIXME : move seg/off translation here + + int_enable(); // enable higher priority interrupts + + while (1) { + + // adjust if there will be an overrun. 2K max sector size + if (FP_OFF(buffer) >= 0xF800) + buffer = MK_FP(FP_SEG(buffer) + 0x80, FP_OFF(buffer) - 0x800); + +#if VBOX_BIOS_CPU >= 80386 + if (mode == ATA_MODE_PIO32) + buffer = rep_outsd(buffer, blksize, iobase1); + else +#endif + buffer = rep_outsw(buffer, blksize, iobase1); + + bios_dsk->drqp.trsfsectors++; + count--; + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) + break; + } + if (count == 0) { + 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 ) { + BX_DEBUG_ATA("%s: no sectors left (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 6; + } + break; + } + else { + if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ | ATA_CB_STAT_ERR) ) + != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ) ) { + BX_DEBUG_ATA("%s: more sectors left (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 7; + } + continue; + } + } + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 0; +} + + +/** + * Read sectors from an attached ATA device. + * + * @returns status code. + * @param bios_dsk Pointer to disk request packet (in the + * EBDA). + */ +int ata_read_sectors(bio_dsk_t __far *bios_dsk) +{ + uint16_t n_sect; + int status; + uint8_t device_id; + + device_id = bios_dsk->drqp.dev_id; + n_sect = bios_dsk->drqp.nsect; + + if (bios_dsk->drqp.sector) { + /* CHS addressing. */ + bios_dsk->devices[device_id].blksize = n_sect * 0x200; + BX_DEBUG_ATA("%s: reading %u sectors (CHS)\n", __func__, n_sect); + status = ata_cmd_data_in(bios_dsk, ATA_CMD_READ_MULTIPLE, n_sect); + bios_dsk->devices[device_id].blksize = 0x200; + } else { + /* LBA addressing. */ + if (bios_dsk->drqp.lba + n_sect >= 268435456) { + BX_DEBUG_ATA("%s: reading %u sector (LBA,EXT)\n", __func__, n_sect); + status = ata_cmd_data_in(bios_dsk, ATA_CMD_READ_SECTORS_EXT, n_sect); + } else { + bios_dsk->devices[device_id].blksize = n_sect * 0x200; + BX_DEBUG_ATA("%s: reading %u sector (LBA,MULT)\n", __func__, n_sect); + status = ata_cmd_data_in(bios_dsk, ATA_CMD_READ_MULTIPLE, n_sect); + bios_dsk->devices[device_id].blksize = 0x200; + } + } + return status; +} + +/** + * Write sectors to an attached ATA device. + * + * @returns status code. + * @param bios_dsk Pointer to disk request packet (in the + * EBDA). + */ +int ata_write_sectors(bio_dsk_t __far *bios_dsk) +{ + uint16_t n_sect; + + n_sect = bios_dsk->drqp.nsect; + + if (bios_dsk->drqp.sector) { + /* CHS addressing. */ + return ata_cmd_data_out(bios_dsk, ATA_CMD_WRITE_SECTORS, n_sect); + } else { + /* LBA addressing. */ + if (bios_dsk->drqp.lba + n_sect >= 268435456) + return ata_cmd_data_out(bios_dsk, ATA_CMD_WRITE_SECTORS_EXT, n_sect); + else + return ata_cmd_data_out(bios_dsk, ATA_CMD_WRITE_SECTORS, n_sect); + } +} + + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : execute a packet command +// --------------------------------------------------------------------------- + // returns + // 0 : no error + // 1 : error in parameters + // 2 : BUSY bit set + // 3 : error + // 4 : not ready +uint16_t ata_cmd_packet(uint16_t device, uint8_t cmdlen, char __far *cmdbuf, + uint32_t length, uint8_t inout, char __far *buffer) +{ + uint16_t iobase1, iobase2; + uint16_t lcount, count; + uint8_t channel, slave; + uint8_t status, mode, lmode; + uint32_t transfer; + bio_dsk_t __far *bios_dsk; + + bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk; + + channel = device / 2; + slave = device % 2; + + // Data out is not supported yet + if (inout == ATA_DATA_OUT) { + BX_INFO("%s: DATA_OUT not supported yet\n", __func__); + return 1; + } + + iobase1 = bios_dsk->channels[channel].iobase1; + iobase2 = bios_dsk->channels[channel].iobase2; + mode = bios_dsk->devices[device].mode; + transfer = 0L; + + if (cmdlen < 12) + cmdlen = 12; + if (cmdlen > 12) + cmdlen = 16; + cmdlen >>= 1; + + // Reset count of transferred data + /// @todo clear in calling code? + bios_dsk->drqp.trsfsectors = 0; + bios_dsk->drqp.trsfbytes = 0; + + status = inb(iobase1 + ATA_CB_STAT); + if (status & ATA_CB_STAT_BSY) + return 2; + + outb(iobase2 + ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN); + // outb(iobase1 + ATA_CB_FR, 0x00); + // outb(iobase1 + ATA_CB_SC, 0x00); + // outb(iobase1 + ATA_CB_SN, 0x00); + outb(iobase1 + ATA_CB_CL, 0xfff0 & 0x00ff); + outb(iobase1 + ATA_CB_CH, 0xfff0 >> 8); + outb(iobase1 + ATA_CB_DH, slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0); + outb(iobase1 + ATA_CB_CMD, ATA_CMD_PACKET); + + // Device should ok to receive command + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) break; + } + + if (status & ATA_CB_STAT_CHK) { + BX_DEBUG_ATA("%s: error, status is %02x\n", __func__, status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 3; + } else if ( !(status & ATA_CB_STAT_DRQ) ) { + BX_DEBUG_ATA("%s: DRQ not set (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 4; + } + + int_enable(); // enable higher priority interrupts + + // Normalize address + BX_DEBUG_ATA("acp1 buffer ptr: %04x:%04x wlen %04x\n", FP_SEG(cmdbuf), FP_OFF(cmdbuf), cmdlen); + cmdbuf = MK_FP(FP_SEG(cmdbuf) + FP_OFF(cmdbuf) / 16 , FP_OFF(cmdbuf) % 16); + // cmdseg += (cmdoff / 16); + // cmdoff %= 16; + + // Send command to device + rep_outsw(cmdbuf, cmdlen, iobase1); + + if (inout == ATA_DATA_NO) { + status = inb(iobase1 + ATA_CB_STAT); + } + else { + while (1) { + + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) + break; + } + + // Check if command completed + if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_DRQ) ) ==0 ) + break; + + if (status & ATA_CB_STAT_CHK) { + BX_DEBUG_ATA("%s: error (status %02x)\n", __func__, status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 3; + } + + // Device must be ready to send data + if ( (status & (ATA_CB_STAT_BSY | ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ | ATA_CB_STAT_CHK) ) + != (ATA_CB_STAT_RDY | ATA_CB_STAT_DRQ) ) { + BX_DEBUG_ATA("%s: not ready (status %02x)\n", __func__, status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 4; + } + + // Normalize address + BX_DEBUG_ATA("acp2 buffer ptr: %04x:%04x\n", FP_SEG(buffer), FP_OFF(buffer)); + buffer = MK_FP(FP_SEG(buffer) + FP_OFF(buffer) / 16 , FP_OFF(buffer) % 16); + // bufseg += (bufoff / 16); + // bufoff %= 16; + + // Get the byte count + lcount = ((uint16_t)(inb(iobase1 + ATA_CB_CH))<<8)+inb(iobase1 + ATA_CB_CL); + + // Save byte count + count = lcount; + + BX_DEBUG_ATA("Trying to read %04x bytes ",lcount); + BX_DEBUG_ATA("to 0x%04x:0x%04x\n",FP_SEG(buffer),FP_OFF(buffer)); + + // If counts not dividable by 4, use 16bits mode + lmode = mode; + if (lcount & 0x03) + lmode = ATA_MODE_PIO16; + + // adds an extra byte if count are odd. before is always even + if (lcount & 0x01) { + lcount += 1; + } + +#if VBOX_BIOS_CPU >= 80386 + if (lmode == ATA_MODE_PIO32) { + lcount >>= 2; + } else +#endif + { + lcount >>= 1; + } + +#if VBOX_BIOS_CPU >= 80386 + if (lmode == ATA_MODE_PIO32) { + rep_insd(buffer, lcount, iobase1); + } else +#endif + { + rep_insw(buffer, lcount, iobase1); + } + + + // Compute new buffer address + buffer += count; + + // Save transferred bytes count + transfer += count; + bios_dsk->drqp.trsfbytes = transfer; + } + } + + // 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_CHK) ) + != ATA_CB_STAT_RDY ) { + BX_DEBUG_ATA("%s: not ready (status %02x)\n", __func__, (unsigned) status); + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 4; + } + + // Enable interrupts + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 0; +} + +// --------------------------------------------------------------------------- +// ATA/ATAPI driver : reset device; intended for ATAPI devices +// --------------------------------------------------------------------------- + // returns + // 0 : no error + // 1 : error +uint16_t ata_soft_reset(uint16_t device) +{ + uint16_t iobase1, iobase2; + uint8_t channel, slave; + uint8_t status; + bio_dsk_t __far *bios_dsk; + + bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk; + + channel = device / 2; + slave = device % 2; + + iobase1 = bios_dsk->channels[channel].iobase1; + iobase2 = bios_dsk->channels[channel].iobase2; + + /* Send a reset command to the device. */ + outb(iobase2 + ATA_CB_DC, ATA_CB_DC_HD15 | ATA_CB_DC_NIEN); + outb(iobase1 + ATA_CB_DH, slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0); + outb(iobase1 + ATA_CB_CMD, ATA_CMD_DEVICE_RESET); + + /* Wait for the device to clear BSY. */ + while (1) { + status = inb(iobase1 + ATA_CB_STAT); + if ( !(status & ATA_CB_STAT_BSY) ) break; + } + + /* 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_CHK) ) + != ATA_CB_STAT_RDY ) { + BX_DEBUG_ATA("%s: not ready (status %02x)\n", __func__, (unsigned) status); + /* Enable interrupts */ + outb(iobase2 + ATA_CB_DC, ATA_CB_DC_HD15); + return 1; + } + + /* Enable interrupts */ + outb(iobase2+ATA_CB_DC, ATA_CB_DC_HD15); + return 0; +} + + +// --------------------------------------------------------------------------- +// End of ATA/ATAPI Driver +// --------------------------------------------------------------------------- |