-/* ide emulation */
-
-/* Bits of HD_STATUS */
-#define ERR_STAT 0x01
-#define INDEX_STAT 0x02
-#define ECC_STAT 0x04 /* Corrected error */
-#define DRQ_STAT 0x08
-#define SEEK_STAT 0x10
-#define SRV_STAT 0x10
-#define WRERR_STAT 0x20
-#define READY_STAT 0x40
-#define BUSY_STAT 0x80
-
-/* Bits for HD_ERROR */
-#define MARK_ERR 0x01 /* Bad address mark */
-#define TRK0_ERR 0x02 /* couldn't find track 0 */
-#define ABRT_ERR 0x04 /* Command aborted */
-#define MCR_ERR 0x08 /* media change request */
-#define ID_ERR 0x10 /* ID field not found */
-#define MC_ERR 0x20 /* media changed */
-#define ECC_ERR 0x40 /* Uncorrectable ECC error */
-#define BBD_ERR 0x80 /* pre-EIDE meaning: block marked bad */
-#define ICRC_ERR 0x80 /* new meaning: CRC error during transfer */
-
-/* Bits of HD_NSECTOR */
-#define CD 0x01
-#define IO 0x02
-#define REL 0x04
-#define TAG_MASK 0xf8
-
-#define IDE_CMD_RESET 0x04
-#define IDE_CMD_DISABLE_IRQ 0x02
-
-/* ATA/ATAPI Commands pre T13 Spec */
-#define WIN_NOP 0x00
-/*
- * 0x01->0x02 Reserved
- */
-#define CFA_REQ_EXT_ERROR_CODE 0x03 /* CFA Request Extended Error Code */
-/*
- * 0x04->0x07 Reserved
- */
-#define WIN_SRST 0x08 /* ATAPI soft reset command */
-#define WIN_DEVICE_RESET 0x08
-/*
- * 0x09->0x0F Reserved
- */
-#define WIN_RECAL 0x10
-#define WIN_RESTORE WIN_RECAL
-/*
- * 0x10->0x1F Reserved
- */
-#define WIN_READ 0x20 /* 28-Bit */
-#define WIN_READ_ONCE 0x21 /* 28-Bit without retries */
-#define WIN_READ_LONG 0x22 /* 28-Bit */
-#define WIN_READ_LONG_ONCE 0x23 /* 28-Bit without retries */
-#define WIN_READ_EXT 0x24 /* 48-Bit */
-#define WIN_READDMA_EXT 0x25 /* 48-Bit */
-#define WIN_READDMA_QUEUED_EXT 0x26 /* 48-Bit */
-#define WIN_READ_NATIVE_MAX_EXT 0x27 /* 48-Bit */
-/*
- * 0x28
- */
-#define WIN_MULTREAD_EXT 0x29 /* 48-Bit */
-/*
- * 0x2A->0x2F Reserved
- */
-#define WIN_WRITE 0x30 /* 28-Bit */
-#define WIN_WRITE_ONCE 0x31 /* 28-Bit without retries */
-#define WIN_WRITE_LONG 0x32 /* 28-Bit */
-#define WIN_WRITE_LONG_ONCE 0x33 /* 28-Bit without retries */
-#define WIN_WRITE_EXT 0x34 /* 48-Bit */
-#define WIN_WRITEDMA_EXT 0x35 /* 48-Bit */
-#define WIN_WRITEDMA_QUEUED_EXT 0x36 /* 48-Bit */
-#define WIN_SET_MAX_EXT 0x37 /* 48-Bit */
-#define CFA_WRITE_SECT_WO_ERASE 0x38 /* CFA Write Sectors without erase */
-#define WIN_MULTWRITE_EXT 0x39 /* 48-Bit */
-/*
- * 0x3A->0x3B Reserved
- */
-#define WIN_WRITE_VERIFY 0x3C /* 28-Bit */
-/*
- * 0x3D->0x3F Reserved
- */
-#define WIN_VERIFY 0x40 /* 28-Bit - Read Verify Sectors */
-#define WIN_VERIFY_ONCE 0x41 /* 28-Bit - without retries */
-#define WIN_VERIFY_EXT 0x42 /* 48-Bit */
-/*
- * 0x43->0x4F Reserved
- */
-#define WIN_FORMAT 0x50
-/*
- * 0x51->0x5F Reserved
- */
-#define WIN_INIT 0x60
-/*
- * 0x61->0x5F Reserved
- */
-#define WIN_SEEK 0x70 /* 0x70-0x7F Reserved */
-#define CFA_TRANSLATE_SECTOR 0x87 /* CFA Translate Sector */
-#define WIN_DIAGNOSE 0x90
-#define WIN_SPECIFY 0x91 /* set drive geometry translation */
-#define WIN_DOWNLOAD_MICROCODE 0x92
-#define WIN_STANDBYNOW2 0x94
-#define WIN_STANDBY2 0x96
-#define WIN_SETIDLE2 0x97
-#define WIN_CHECKPOWERMODE2 0x98
-#define WIN_SLEEPNOW2 0x99
-/*
- * 0x9A VENDOR
- */
-#define WIN_PACKETCMD 0xA0 /* Send a packet command. */
-#define WIN_PIDENTIFY 0xA1 /* identify ATAPI device */
-#define WIN_QUEUED_SERVICE 0xA2
-#define WIN_SMART 0xB0 /* self-monitoring and reporting */
-#define CFA_ERASE_SECTORS 0xC0
-#define WIN_MULTREAD 0xC4 /* read sectors using multiple mode*/
-#define WIN_MULTWRITE 0xC5 /* write sectors using multiple mode */
-#define WIN_SETMULT 0xC6 /* enable/disable multiple mode */
-#define WIN_READDMA_QUEUED 0xC7 /* read sectors using Queued DMA transfers */
-#define WIN_READDMA 0xC8 /* read sectors using DMA transfers */
-#define WIN_READDMA_ONCE 0xC9 /* 28-Bit - without retries */
-#define WIN_WRITEDMA 0xCA /* write sectors using DMA transfers */
-#define WIN_WRITEDMA_ONCE 0xCB /* 28-Bit - without retries */
-#define WIN_WRITEDMA_QUEUED 0xCC /* write sectors using Queued DMA transfers */
-#define CFA_WRITE_MULTI_WO_ERASE 0xCD /* CFA Write multiple without erase */
-#define WIN_GETMEDIASTATUS 0xDA
-#define WIN_ACKMEDIACHANGE 0xDB /* ATA-1, ATA-2 vendor */
-#define WIN_POSTBOOT 0xDC
-#define WIN_PREBOOT 0xDD
-#define WIN_DOORLOCK 0xDE /* lock door on removable drives */
-#define WIN_DOORUNLOCK 0xDF /* unlock door on removable drives */
-#define WIN_STANDBYNOW1 0xE0
-#define WIN_IDLEIMMEDIATE 0xE1 /* force drive to become "ready" */
-#define WIN_STANDBY 0xE2 /* Set device in Standby Mode */
-#define WIN_SETIDLE1 0xE3
-#define WIN_READ_BUFFER 0xE4 /* force read only 1 sector */
-#define WIN_CHECKPOWERMODE1 0xE5
-#define WIN_SLEEPNOW1 0xE6
-#define WIN_FLUSH_CACHE 0xE7
-#define WIN_WRITE_BUFFER 0xE8 /* force write only 1 sector */
-#define WIN_WRITE_SAME 0xE9 /* read ata-2 to use */
- /* SET_FEATURES 0x22 or 0xDD */
-#define WIN_FLUSH_CACHE_EXT 0xEA /* 48-Bit */
-#define WIN_IDENTIFY 0xEC /* ask drive to identify itself */
-#define WIN_MEDIAEJECT 0xED
-#define WIN_IDENTIFY_DMA 0xEE /* same as WIN_IDENTIFY, but DMA */
-#define WIN_SETFEATURES 0xEF /* set special drive features */
-#define EXABYTE_ENABLE_NEST 0xF0
-#define WIN_SECURITY_SET_PASS 0xF1
-#define WIN_SECURITY_UNLOCK 0xF2
-#define WIN_SECURITY_ERASE_PREPARE 0xF3
-#define WIN_SECURITY_ERASE_UNIT 0xF4
-#define WIN_SECURITY_FREEZE_LOCK 0xF5
-#define WIN_SECURITY_DISABLE 0xF6
-#define WIN_READ_NATIVE_MAX 0xF8 /* return the native maximum address */
-#define WIN_SET_MAX 0xF9
-#define DISABLE_SEAGATE 0xFB
-
-/* set to 1 set disable mult support */
-#define MAX_MULT_SECTORS 8
-
-struct IDEState;
-
-typedef void EndTransferFunc(struct IDEState *);
-
-typedef struct IDEState {
- /* ide config */
- int cylinders, heads, sectors;
- int64_t nb_sectors;
- int mult_sectors;
- int irq;
- /* ide regs */
- uint8_t feature;
- uint8_t error;
- uint16_t nsector; /* 0 is 256 to ease computations */
- uint8_t sector;
- uint8_t lcyl;
- uint8_t hcyl;
- uint8_t select;
- uint8_t status;
- /* 0x3f6 command, only meaningful for drive 0 */
- uint8_t cmd;
- /* depends on bit 4 in select, only meaningful for drive 0 */
- struct IDEState *cur_drive;
- BlockDriverState *bs;
- int req_nb_sectors; /* number of sectors per interrupt */
- EndTransferFunc *end_transfer_func;
- uint8_t *data_ptr;
- uint8_t *data_end;
- uint8_t io_buffer[MAX_MULT_SECTORS*512 + 4];
-} IDEState;
-
-IDEState ide_state[MAX_DISKS];
-
-static void padstr(char *str, const char *src, int len)
-{
- int i, v;
- for(i = 0; i < len; i++) {
- if (*src)
- v = *src++;
- else
- v = ' ';
- *(char *)((long)str ^ 1) = v;
- str++;
- }
-}
-
-static void ide_identify(IDEState *s)
-{
- uint16_t *p;
- unsigned int oldsize;
-
- memset(s->io_buffer, 0, 512);
- p = (uint16_t *)s->io_buffer;
- stw(p + 0, 0x0040);
- stw(p + 1, s->cylinders);
- stw(p + 3, s->heads);
- stw(p + 4, 512 * s->sectors); /* sectors */
- stw(p + 5, 512); /* sector size */
- stw(p + 6, s->sectors);
- stw(p + 20, 3); /* buffer type */
- stw(p + 21, 512); /* cache size in sectors */
- stw(p + 22, 4); /* ecc bytes */
- padstr((uint8_t *)(p + 27), "QEMU HARDDISK", 40);
-#if MAX_MULT_SECTORS > 1
- stw(p + 47, MAX_MULT_SECTORS);
-#endif
- stw(p + 48, 1); /* dword I/O */
- stw(p + 49, 1 << 9); /* LBA supported, no DMA */
- stw(p + 51, 0x200); /* PIO transfer cycle */
- stw(p + 52, 0x200); /* DMA transfer cycle */
- stw(p + 54, s->cylinders);
- stw(p + 55, s->heads);
- stw(p + 56, s->sectors);
- oldsize = s->cylinders * s->heads * s->sectors;
- stw(p + 57, oldsize);
- stw(p + 58, oldsize >> 16);
- if (s->mult_sectors)
- stw(p + 59, 0x100 | s->mult_sectors);
- stw(p + 60, s->nb_sectors);
- stw(p + 61, s->nb_sectors >> 16);
- stw(p + 80, (1 << 1) | (1 << 2));
- stw(p + 82, (1 << 14));
- stw(p + 83, (1 << 14));
- stw(p + 84, (1 << 14));
- stw(p + 85, (1 << 14));
- stw(p + 86, 0);
- stw(p + 87, (1 << 14));
-}
-
-static inline void ide_abort_command(IDEState *s)
-{
- s->status = READY_STAT | ERR_STAT;
- s->error = ABRT_ERR;
-}
-
-static inline void ide_set_irq(IDEState *s)
-{
- if (!(ide_state[0].cmd & IDE_CMD_DISABLE_IRQ)) {
- pic_set_irq(s->irq, 1);
- }
-}
-
-/* prepare data transfer and tell what to do after */
-static void ide_transfer_start(IDEState *s, int size,
- EndTransferFunc *end_transfer_func)
-{
- s->end_transfer_func = end_transfer_func;
- s->data_ptr = s->io_buffer;
- s->data_end = s->io_buffer + size;
- s->status |= DRQ_STAT;
-}
-
-static void ide_transfer_stop(IDEState *s)
-{
- s->end_transfer_func = ide_transfer_stop;
- s->data_ptr = s->io_buffer;
- s->data_end = s->io_buffer;
- s->status &= ~DRQ_STAT;
-}
-
-static int64_t ide_get_sector(IDEState *s)
-{
- int64_t sector_num;
- if (s->select & 0x40) {
- /* lba */
- sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
- (s->lcyl << 8) | s->sector;
- } else {
- sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
- (s->select & 0x0f) * s->sectors +
- (s->sector - 1);
- }
- return sector_num;
-}
-
-static void ide_set_sector(IDEState *s, int64_t sector_num)
-{
- unsigned int cyl, r;
- if (s->select & 0x40) {
- s->select = (s->select & 0xf0) | (sector_num >> 24);
- s->hcyl = (sector_num >> 16);
- s->lcyl = (sector_num >> 8);
- s->sector = (sector_num);
- } else {
- cyl = sector_num / (s->heads * s->sectors);
- r = sector_num % (s->heads * s->sectors);
- s->hcyl = cyl >> 8;
- s->lcyl = cyl;
- s->select = (s->select & 0xf0) | (r / s->sectors);
- s->sector = (r % s->sectors) + 1;
- }
-}
-
-static void ide_sector_read(IDEState *s)
-{
- int64_t sector_num;
- int ret, n;
-
- s->status = READY_STAT | SEEK_STAT;
- sector_num = ide_get_sector(s);
- n = s->nsector;
- if (n == 0) {
- /* no more sector to read from disk */
- ide_transfer_stop(s);
- } else {
-#if defined(DEBUG_IDE)
- printf("read sector=%Ld\n", sector_num);
-#endif
- if (n > s->req_nb_sectors)
- n = s->req_nb_sectors;
- ret = bdrv_read(s->bs, sector_num, s->io_buffer, n);
- ide_transfer_start(s, 512 * n, ide_sector_read);
- ide_set_irq(s);
- ide_set_sector(s, sector_num + n);
- s->nsector -= n;
- }
-}
-
-static void ide_sector_write(IDEState *s)
-{
- int64_t sector_num;
- int ret, n, n1;
-
- s->status = READY_STAT | SEEK_STAT;
- sector_num = ide_get_sector(s);
-#if defined(DEBUG_IDE)
- printf("write sector=%Ld\n", sector_num);
-#endif
- n = s->nsector;
- if (n > s->req_nb_sectors)
- n = s->req_nb_sectors;
- ret = bdrv_write(s->bs, sector_num, s->io_buffer, n);
- s->nsector -= n;
- if (s->nsector == 0) {
- /* no more sector to write */
- ide_transfer_stop(s);
- } else {
- n1 = s->nsector;
- if (n1 > s->req_nb_sectors)
- n1 = s->req_nb_sectors;
- ide_transfer_start(s, 512 * n1, ide_sector_write);
- }
- ide_set_sector(s, sector_num + n);
- ide_set_irq(s);
-}
-
-void ide_ioport_write(CPUX86State *env, uint32_t addr, uint32_t val)
-{
- IDEState *s = ide_state[0].cur_drive;
- int unit, n;
-
- addr &= 7;
-#ifdef DEBUG_IDE
- printf("IDE: write addr=0x%x val=0x%02x\n", addr, val);
-#endif
- switch(addr) {
- case 0:
- break;
- case 1:
- s->feature = val;
- break;
- case 2:
- if (val == 0)
- val = 256;
- s->nsector = val;
- break;
- case 3:
- s->sector = val;
- break;
- case 4:
- s->lcyl = val;
- break;
- case 5:
- s->hcyl = val;
- break;
- case 6:
- /* select drive */
- unit = (val >> 4) & 1;
- s = &ide_state[unit];
- ide_state[0].cur_drive = s;
- s->select = val;
- break;
- default:
- case 7:
- /* command */
-#if defined(DEBUG_IDE)
- printf("ide: CMD=%02x\n", val);
-#endif
- switch(val) {
- case WIN_PIDENTIFY:
- case WIN_IDENTIFY:
- if (s->bs) {
- ide_identify(s);
- s->status = READY_STAT;
- ide_transfer_start(s, 512, ide_transfer_stop);
- } else {
- ide_abort_command(s);
- }
- ide_set_irq(s);
- break;
- case WIN_SPECIFY:
- case WIN_RECAL:
- s->status = READY_STAT;
- ide_set_irq(s);
- break;
- case WIN_SETMULT:
- if (s->nsector > MAX_MULT_SECTORS ||
- s->nsector == 0 ||
- (s->nsector & (s->nsector - 1)) != 0) {
- ide_abort_command(s);
- } else {
- s->mult_sectors = s->nsector;
- s->status = READY_STAT;
- }
- ide_set_irq(s);
- break;
- case WIN_READ:
- case WIN_READ_ONCE:
- s->req_nb_sectors = 1;
- ide_sector_read(s);
- break;
- case WIN_WRITE:
- case WIN_WRITE_ONCE:
- s->status = SEEK_STAT;
- s->req_nb_sectors = 1;
- ide_transfer_start(s, 512, ide_sector_write);
- break;
- case WIN_MULTREAD:
- if (!s->mult_sectors)
- goto abort_cmd;
- s->req_nb_sectors = s->mult_sectors;
- ide_sector_read(s);
- break;
- case WIN_MULTWRITE:
- if (!s->mult_sectors)
- goto abort_cmd;
- s->status = SEEK_STAT;
- s->req_nb_sectors = s->mult_sectors;
- n = s->nsector;
- if (n > s->req_nb_sectors)
- n = s->req_nb_sectors;
- ide_transfer_start(s, 512 * n, ide_sector_write);
- break;
- case WIN_READ_NATIVE_MAX:
- ide_set_sector(s, s->nb_sectors - 1);
- s->status = READY_STAT;
- ide_set_irq(s);
- break;
- default:
- abort_cmd:
- ide_abort_command(s);
- ide_set_irq(s);
- break;
- }
- }
-}
-
-uint32_t ide_ioport_read(CPUX86State *env, uint32_t addr)
-{
- IDEState *s = ide_state[0].cur_drive;
- int ret;
-
- addr &= 7;
- switch(addr) {
- case 0:
- ret = 0xff;
- break;
- case 1:
- ret = s->error;
- break;
- case 2:
- ret = s->nsector & 0xff;
- break;
- case 3:
- ret = s->sector;
- break;
- case 4:
- ret = s->lcyl;
- break;
- case 5:
- ret = s->hcyl;
- break;
- case 6:
- ret = s->select;
- break;
- default:
- case 7:
- ret = s->status;
- pic_set_irq(s->irq, 0);
- break;
- }
-#ifdef DEBUG_IDE
- printf("ide: read addr=0x%x val=%02x\n", addr, ret);
-#endif
- return ret;
-}
-
-uint32_t ide_status_read(CPUX86State *env, uint32_t addr)
-{
- IDEState *s = ide_state[0].cur_drive;
- int ret;
- ret = s->status;
-#ifdef DEBUG_IDE
- printf("ide: read status val=%02x\n", ret);
-#endif
- return ret;
-}
-
-void ide_cmd_write(CPUX86State *env, uint32_t addr, uint32_t val)
-{
- IDEState *s;
- int i;
-
-#ifdef DEBUG_IDE
- printf("ide: write control val=%02x\n", val);
-#endif
- /* common for both drives */
- if (!(ide_state[0].cmd & IDE_CMD_RESET) &&
- (val & IDE_CMD_RESET)) {
- /* reset low to high */
- for(i = 0;i < 2; i++) {
- s = &ide_state[i];
- s->status = BUSY_STAT | SEEK_STAT;
- s->error = 0x01;
- }
- } else if ((ide_state[0].cmd & IDE_CMD_RESET) &&
- !(val & IDE_CMD_RESET)) {
- /* high to low */
- for(i = 0;i < 2; i++) {
- s = &ide_state[i];
- s->status = READY_STAT;
- /* set hard disk drive ID */
- s->select &= 0xf0; /* clear head */
- s->nsector = 1;
- s->sector = 1;
- if (s->nb_sectors == 0) {
- /* no disk present */
- s->lcyl = 0x12;
- s->hcyl = 0x34;
- } else {
- s->lcyl = 0;
- s->hcyl = 0;
- }
- }
- }
-
- ide_state[0].cmd = val;
-}
-
-void ide_data_writew(CPUX86State *env, uint32_t addr, uint32_t val)
-{
- IDEState *s = ide_state[0].cur_drive;
- uint8_t *p;
-
- p = s->data_ptr;
- *(uint16_t *)p = tswap16(val);
- p += 2;
- s->data_ptr = p;
- if (p >= s->data_end)
- s->end_transfer_func(s);
-}
-
-uint32_t ide_data_readw(CPUX86State *env, uint32_t addr)
-{
- IDEState *s = ide_state[0].cur_drive;
- uint8_t *p;
- int ret;
-
- p = s->data_ptr;
- ret = tswap16(*(uint16_t *)p);
- p += 2;
- s->data_ptr = p;
- if (p >= s->data_end)
- s->end_transfer_func(s);
- return ret;
-}
-
-void ide_data_writel(CPUX86State *env, uint32_t addr, uint32_t val)
-{
- IDEState *s = ide_state[0].cur_drive;
- uint8_t *p;
-
- p = s->data_ptr;
- *(uint32_t *)p = tswap32(val);
- p += 4;
- s->data_ptr = p;
- if (p >= s->data_end)
- s->end_transfer_func(s);
-}
-
-uint32_t ide_data_readl(CPUX86State *env, uint32_t addr)
-{
- IDEState *s = ide_state[0].cur_drive;
- uint8_t *p;
- int ret;
-
- p = s->data_ptr;
- ret = tswap32(*(uint32_t *)p);
- p += 4;
- s->data_ptr = p;
- if (p >= s->data_end)
- s->end_transfer_func(s);
- return ret;
-}
-
-void ide_reset(IDEState *s)
-{
- s->mult_sectors = MAX_MULT_SECTORS;
- s->status = READY_STAT;
- s->cur_drive = s;
- s->select = 0xa0;
-}
-
-void ide_init(void)
-{
- IDEState *s;
- int i, cylinders;
- int64_t nb_sectors;
-
- for(i = 0; i < MAX_DISKS; i++) {
- s = &ide_state[i];
- s->bs = bs_table[i];
- if (s->bs) {
- bdrv_get_geometry(s->bs, &nb_sectors);
- if (s->cylinders == 0) {
- /* if no geometry, use a LBA compatible one */
- cylinders = nb_sectors / (16 * 63);
- if (cylinders > 16383)
- cylinders = 16383;
- else if (cylinders < 2)
- cylinders = 2;
- s->cylinders = cylinders;
- s->heads = 16;
- s->sectors = 63;
- }
- s->nb_sectors = nb_sectors;
- }
- s->irq = 14;
- ide_reset(s);
- }
- register_ioport_write(0x1f0, 8, ide_ioport_write, 1);
- register_ioport_read(0x1f0, 8, ide_ioport_read, 1);
- register_ioport_read(0x3f6, 1, ide_status_read, 1);
- register_ioport_write(0x3f6, 1, ide_cmd_write, 1);
-
- /* data ports */
- register_ioport_write(0x1f0, 2, ide_data_writew, 2);
- register_ioport_read(0x1f0, 2, ide_data_readw, 2);
- register_ioport_write(0x1f0, 4, ide_data_writel, 4);
- register_ioport_read(0x1f0, 4, ide_data_readl, 4);
-}
-
-/***********************************************************/