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Give names to magic numbers (Herv�oussineau)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4000 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-02-29 19:24:00 +00:00
parent b6d3abda68
commit 9fea808abf
1 changed files with 222 additions and 125 deletions
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347
hw/fdc.c
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@ -360,6 +360,102 @@ enum {
FD_STATE_FORMAT = 0x40,
};
enum {
FD_REG_0 = 0x00,
FD_REG_STATUSB = 0x01,
FD_REG_DOR = 0x02,
FD_REG_TDR = 0x03,
FD_REG_MSR = 0x04,
FD_REG_DSR = 0x04,
FD_REG_FIFO = 0x05,
FD_REG_DIR = 0x07,
};
enum {
FD_CMD_SPECIFY = 0x03,
FD_CMD_SENSE_DRIVE_STATUS = 0x04,
FD_CMD_RECALIBRATE = 0x07,
FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
FD_CMD_DUMPREG = 0x0e,
FD_CMD_SEEK = 0x0f,
FD_CMD_VERSION = 0x10,
FD_CMD_PERPENDICULAR_MODE = 0x12,
FD_CMD_CONFIGURE = 0x13,
FD_CMD_UNLOCK = 0x14,
FD_CMD_POWERDOWN_MODE = 0x17,
FD_CMD_PART_ID = 0x18,
FD_CMD_SAVE = 0x2c,
FD_CMD_OPTION = 0x33,
FD_CMD_READ_TRACK = 0x42,
FD_CMD_WRITE = 0x45,
FD_CMD_READ = 0x46,
FD_CMD_WRITE_DELETED = 0x49,
FD_CMD_READ_ID = 0x4a,
FD_CMD_READ_DELETED = 0x4c,
FD_CMD_RESTORE = 0x4c,
FD_CMD_FORMAT_TRACK = 0x4d,
FD_CMD_SCAN_EQUAL = 0x50,
FD_CMD_VERIFY = 0x56,
FD_CMD_SCAN_LOW_OR_EQUAL = 0x59,
FD_CMD_SCAN_HIGH_OR_EQUAL = 0x5d,
FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
FD_CMD_LOCK = 0x94,
FD_CMD_FORMAT_AND_WRITE = 0xcd,
FD_CMD_RELATIVE_SEEK_IN = 0xcf,
};
enum {
FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
FD_CONFIG_POLL = 0x10, /* Poll enabled */
FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
FD_CONFIG_EIS = 0x40, /* No implied seeks */
};
enum {
FD_SR0_EQPMT = 0x10,
FD_SR0_SEEK = 0x20,
FD_SR0_ABNTERM = 0x40,
FD_SR0_INVCMD = 0x80,
FD_SR0_RDYCHG = 0xc0,
};
enum {
FD_DOR_SELMASK = 0x01,
FD_DOR_nRESET = 0x04,
FD_DOR_DMAEN = 0x08,
FD_DOR_MOTEN0 = 0x10,
FD_DOR_MOTEN1 = 0x20,
FD_DOR_MOTEN2 = 0x40,
FD_DOR_MOTEN3 = 0x80,
};
enum {
FD_TDR_BOOTSEL = 0x0c,
};
enum {
FD_DSR_DRATEMASK= 0x03,
FD_DSR_PWRDOWN = 0x40,
FD_DSR_SWRESET = 0x80,
};
enum {
FD_MSR_DRV0BUSY = 0x01,
FD_MSR_DRV1BUSY = 0x02,
FD_MSR_DRV2BUSY = 0x04,
FD_MSR_DRV3BUSY = 0x08,
FD_MSR_CMDBUSY = 0x10,
FD_MSR_NONDMA = 0x20,
FD_MSR_DIO = 0x40,
FD_MSR_RQM = 0x80,
};
enum {
FD_DIR_DSKCHG = 0x80,
};
#define FD_STATE(state) ((state) & FD_STATE_STATE)
#define FD_SET_STATE(state, new_state) \
do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
@ -411,7 +507,7 @@ static uint32_t fdctrl_read (void *opaque, uint32_t reg)
uint32_t retval;
switch (reg & 0x07) {
case 0x00:
case FD_REG_0:
if (fdctrl->sun4m) {
// Identify to Linux as S82078B
retval = fdctrl_read_statusB(fdctrl);
@ -419,22 +515,22 @@ static uint32_t fdctrl_read (void *opaque, uint32_t reg)
retval = (uint32_t)(-1);
}
break;
case 0x01:
case FD_REG_STATUSB:
retval = fdctrl_read_statusB(fdctrl);
break;
case 0x02:
case FD_REG_DOR:
retval = fdctrl_read_dor(fdctrl);
break;
case 0x03:
case FD_REG_TDR:
retval = fdctrl_read_tape(fdctrl);
break;
case 0x04:
case FD_REG_MSR:
retval = fdctrl_read_main_status(fdctrl);
break;
case 0x05:
case FD_REG_FIFO:
retval = fdctrl_read_data(fdctrl);
break;
case 0x07:
case FD_REG_DIR:
retval = fdctrl_read_dir(fdctrl);
break;
default:
@ -453,16 +549,16 @@ static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
switch (reg & 0x07) {
case 0x02:
case FD_REG_DOR:
fdctrl_write_dor(fdctrl, value);
break;
case 0x03:
case FD_REG_TDR:
fdctrl_write_tape(fdctrl, value);
break;
case 0x04:
case FD_REG_DSR:
fdctrl_write_rate(fdctrl, value);
break;
case 0x05:
case FD_REG_FIFO:
fdctrl_write_data(fdctrl, value);
break;
default:
@ -621,21 +717,21 @@ static fdctrl_t *fdctrl_init_common (qemu_irq irq, int dma_chann,
fdctrl->irq = irq;
fdctrl->dma_chann = dma_chann;
fdctrl->io_base = io_base;
fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
if (fdctrl->dma_chann != -1) {
fdctrl->dma_en = 1;
DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
} else {
fdctrl->dma_en = 0;
}
for (i = 0; i < 2; i++) {
for (i = 0; i < MAX_FD; i++) {
fd_init(&fdctrl->drives[i], fds[i]);
}
fdctrl_reset(fdctrl, 0);
fdctrl->state = FD_CTRL_ACTIVE;
register_savevm("fdc", io_base, 1, fdc_save, fdc_load, fdctrl);
qemu_register_reset(fdctrl_external_reset, fdctrl);
for (i = 0; i < 2; i++) {
for (i = 0; i < MAX_FD; i++) {
fd_revalidate(&fdctrl->drives[i]);
}
@ -734,7 +830,7 @@ static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq)
fd_reset(&fdctrl->drives[i]);
fdctrl_reset_fifo(fdctrl);
if (do_irq)
fdctrl_raise_irq(fdctrl, 0xc0);
fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
}
static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
@ -766,13 +862,15 @@ static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl)
/* Drive motors state indicators */
if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
retval |= 1 << 5;
retval |= FD_DOR_MOTEN0;
if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
retval |= 1 << 4;
retval |= FD_DOR_MOTEN1;
/* DMA enable */
retval |= fdctrl->dma_en << 3;
if (fdctrl->dma_en)
retval |= FD_DOR_DMAEN;
/* Reset indicator */
retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0;
if (!(fdctrl->state & FD_CTRL_RESET))
retval |= FD_DOR_nRESET;
/* Selected drive */
retval |= fdctrl->cur_drv;
FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
@ -784,28 +882,28 @@ static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
{
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
if (!(value & 0x04)) {
if (!(value & FD_DOR_nRESET)) {
FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
}
FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
/* Drive motors state indicators */
if (value & 0x20)
if (value & FD_DOR_MOTEN1)
fd_start(drv1(fdctrl));
else
fd_stop(drv1(fdctrl));
if (value & 0x10)
if (value & FD_DOR_MOTEN0)
fd_start(drv0(fdctrl));
else
fd_stop(drv0(fdctrl));
/* DMA enable */
#if 0
if (fdctrl->dma_chann != -1)
fdctrl->dma_en = 1 - ((value >> 3) & 1);
fdctrl->dma_en = value & FD_DOR_DMAEN ? 1 : 0;
#endif
/* Reset */
if (!(value & 0x04)) {
if (!(value & FD_DOR_nRESET)) {
if (!(fdctrl->state & FD_CTRL_RESET)) {
FLOPPY_DPRINTF("controller enter RESET state\n");
fdctrl->state |= FD_CTRL_RESET;
@ -818,7 +916,7 @@ static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
}
}
/* Selected drive */
fdctrl->cur_drv = value & 1;
fdctrl->cur_drv = value & FD_DOR_SELMASK;
}
/* Tape drive register : 0x03 */
@ -843,7 +941,7 @@ static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value)
}
FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
/* Disk boot selection indicator */
fdctrl->bootsel = (value >> 2) & 1;
fdctrl->bootsel = (value & FD_TDR_BOOTSEL) >> 2;
/* Tape indicators: never allow */
}
@ -855,16 +953,16 @@ static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl)
fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
if (!(fdctrl->state & FD_CTRL_BUSY)) {
/* Data transfer allowed */
retval |= 0x80;
retval |= FD_MSR_RQM;
/* Data transfer direction indicator */
if (fdctrl->data_dir == FD_DIR_READ)
retval |= 0x40;
retval |= FD_MSR_DIO;
}
/* Should handle 0x20 for SPECIFY command */
/* Should handle FD_MSR_NONDMA for SPECIFY command */
/* Command busy indicator */
if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
FD_STATE(fdctrl->data_state) == FD_STATE_STATUS)
retval |= 0x10;
retval |= FD_MSR_CMDBUSY;
FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
return retval;
@ -880,16 +978,15 @@ static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value)
}
FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
/* Reset: autoclear */
if (value & 0x80) {
if (value & FD_DSR_SWRESET) {
fdctrl->state |= FD_CTRL_RESET;
fdctrl_reset(fdctrl, 1);
fdctrl->state &= ~FD_CTRL_RESET;
}
if (value & 0x40) {
if (value & FD_DSR_PWRDOWN) {
fdctrl->state |= FD_CTRL_SLEEP;
fdctrl_reset(fdctrl, 1);
}
// fdctrl.precomp = (value >> 2) & 0x07;
}
static int fdctrl_media_changed(fdrive_t *drv)
@ -912,7 +1009,7 @@ static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
if (fdctrl_media_changed(drv0(fdctrl)) ||
fdctrl_media_changed(drv1(fdctrl)))
retval |= 0x80;
retval |= FD_DIR_DSKCHG;
if (retval != 0)
FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
@ -945,13 +1042,13 @@ static void fdctrl_unimplemented (fdctrl_t *fdctrl)
fdrive_t *cur_drv;
cur_drv = get_cur_drv(fdctrl);
fdctrl->fifo[0] = 0x60 | (cur_drv->head << 2) | fdctrl->cur_drv;
fdctrl->fifo[0] = FD_SR0_ABNTERM | FD_SR0_SEEK | (cur_drv->head << 2) | fdctrl->cur_drv;
fdctrl->fifo[1] = 0x00;
fdctrl->fifo[2] = 0x00;
fdctrl_set_fifo(fdctrl, 3, 1);
#else
// fdctrl_reset_fifo(fdctrl);
fdctrl->fifo[0] = 0x80;
fdctrl->fifo[0] = FD_SR0_INVCMD;
fdctrl_set_fifo(fdctrl, 1, 0);
#endif
}
@ -988,7 +1085,7 @@ static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction)
uint8_t kh, kt, ks;
int did_seek;
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
kt = fdctrl->fifo[2];
kh = fdctrl->fifo[3];
@ -1000,21 +1097,21 @@ static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction)
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
case 2:
/* sect too big */
fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 3:
/* track too big */
fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x80, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 4:
/* No seek enabled */
fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
@ -1086,7 +1183,7 @@ static void fdctrl_start_transfer_del (fdctrl_t *fdctrl, int direction)
/* We don't handle deleted data,
* so we don't return *ANYTHING*
*/
fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
}
/* handlers for DMA transfers */
@ -1111,9 +1208,9 @@ static int fdctrl_transfer_handler (void *opaque, int nchan,
dma_len = fdctrl->data_len;
if (cur_drv->bs == NULL) {
if (fdctrl->data_dir == FD_DIR_WRITE)
fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
else
fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
len = 0;
goto transfer_error;
}
@ -1126,7 +1223,7 @@ static int fdctrl_transfer_handler (void *opaque, int nchan,
"(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
fdctrl->data_len, fdctrl->cur_drv, cur_drv->head,
cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
fd_sector(cur_drv) * 512);
fd_sector(cur_drv) * FD_SECTOR_LEN);
if (fdctrl->data_dir != FD_DIR_WRITE ||
len < FD_SECTOR_LEN || rel_pos != 0) {
/* READ & SCAN commands and realign to a sector for WRITE */
@ -1151,7 +1248,7 @@ static int fdctrl_transfer_handler (void *opaque, int nchan,
if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
fdctrl->fifo, 1) < 0) {
FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
goto transfer_error;
}
break;
@ -1218,7 +1315,7 @@ static int fdctrl_transfer_handler (void *opaque, int nchan,
fdctrl->data_dir == FD_DIR_SCANH)
status2 = 0x08;
if (FD_DID_SEEK(fdctrl->data_state))
status0 |= 0x20;
status0 |= FD_SR0_SEEK;
fdctrl->data_len -= len;
// if (fdctrl->data_len == 0)
fdctrl_stop_transfer(fdctrl, status0, status1, status2);
@ -1257,7 +1354,7 @@ static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
* then from status mode to command mode
*/
if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
} else {
fdctrl_reset_fifo(fdctrl);
fdctrl_reset_irq(fdctrl);
@ -1274,7 +1371,7 @@ static void fdctrl_format_sector (fdctrl_t *fdctrl)
uint8_t kh, kt, ks;
int did_seek;
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
kt = fdctrl->fifo[6];
kh = fdctrl->fifo[7];
@ -1283,24 +1380,24 @@ static void fdctrl_format_sector (fdctrl_t *fdctrl)
fdctrl->cur_drv, kh, kt, ks,
_fd_sector(kh, kt, ks, cur_drv->last_sect));
did_seek = 0;
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
/* sect too big */
fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 3:
/* track too big */
fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x80, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 4:
/* No seek enabled */
fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
@ -1316,13 +1413,13 @@ static void fdctrl_format_sector (fdctrl_t *fdctrl)
if (cur_drv->bs == NULL ||
bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
} else {
if (cur_drv->sect == cur_drv->last_sect) {
fdctrl->data_state &= ~FD_STATE_FORMAT;
/* Last sector done */
if (FD_DID_SEEK(fdctrl->data_state))
fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
else
fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
} else {
@ -1360,43 +1457,43 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
* then from status mode to command mode
*/
if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
return;
}
if (fdctrl->data_pos == 0) {
/* Command */
switch (value & 0x5F) {
case 0x46:
case FD_CMD_READ:
/* READ variants */
FLOPPY_DPRINTF("READ command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x4C:
case FD_CMD_READ_DELETED:
/* READ_DELETED variants */
FLOPPY_DPRINTF("READ_DELETED command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x50:
case FD_CMD_SCAN_EQUAL:
/* SCAN_EQUAL variants */
FLOPPY_DPRINTF("SCAN_EQUAL command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x56:
case FD_CMD_VERIFY:
/* VERIFY variants */
FLOPPY_DPRINTF("VERIFY command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x59:
case FD_CMD_SCAN_LOW_OR_EQUAL:
/* SCAN_LOW_OR_EQUAL variants */
FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x5D:
case FD_CMD_SCAN_HIGH_OR_EQUAL:
/* SCAN_HIGH_OR_EQUAL variants */
FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
/* 8 parameters cmd */
@ -1406,13 +1503,13 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
break;
}
switch (value & 0x7F) {
case 0x45:
case FD_CMD_WRITE:
/* WRITE variants */
FLOPPY_DPRINTF("WRITE command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x49:
case FD_CMD_WRITE_DELETED:
/* WRITE_DELETED variants */
FLOPPY_DPRINTF("WRITE_DELETED command\n");
/* 8 parameters cmd */
@ -1422,25 +1519,25 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
break;
}
switch (value) {
case 0x03:
case FD_CMD_SPECIFY:
/* SPECIFY */
FLOPPY_DPRINTF("SPECIFY command\n");
/* 1 parameter cmd */
fdctrl->data_len = 3;
goto enqueue;
case 0x04:
case FD_CMD_SENSE_DRIVE_STATUS:
/* SENSE_DRIVE_STATUS */
FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
/* 1 parameter cmd */
fdctrl->data_len = 2;
goto enqueue;
case 0x07:
case FD_CMD_RECALIBRATE:
/* RECALIBRATE */
FLOPPY_DPRINTF("RECALIBRATE command\n");
/* 1 parameter cmd */
fdctrl->data_len = 2;
goto enqueue;
case 0x08:
case FD_CMD_SENSE_INTERRUPT_STATUS:
/* SENSE_INTERRUPT_STATUS */
FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
fdctrl->int_status);
@ -1458,9 +1555,9 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->fifo[1] = cur_drv->track;
fdctrl_set_fifo(fdctrl, 2, 0);
fdctrl_reset_irq(fdctrl);
fdctrl->int_status = 0xC0;
fdctrl->int_status = FD_SR0_RDYCHG;
return;
case 0x0E:
case FD_CMD_DUMPREG:
/* DUMPREG */
FLOPPY_DPRINTF("DUMPREG command\n");
/* Drives position */
@ -1478,13 +1575,13 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->fifo[9] = fdctrl->precomp_trk;
fdctrl_set_fifo(fdctrl, 10, 0);
return;
case 0x0F:
case FD_CMD_SEEK:
/* SEEK */
FLOPPY_DPRINTF("SEEK command\n");
/* 2 parameters cmd */
fdctrl->data_len = 3;
goto enqueue;
case 0x10:
case FD_CMD_VERSION:
/* VERSION */
FLOPPY_DPRINTF("VERSION command\n");
/* No parameters cmd */
@ -1492,19 +1589,19 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->fifo[0] = fdctrl->version;
fdctrl_set_fifo(fdctrl, 1, 1);
return;
case 0x12:
case FD_CMD_PERPENDICULAR_MODE:
/* PERPENDICULAR_MODE */
FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
/* 1 parameter cmd */
fdctrl->data_len = 2;
goto enqueue;
case 0x13:
case FD_CMD_CONFIGURE:
/* CONFIGURE */
FLOPPY_DPRINTF("CONFIGURE command\n");
/* 3 parameters cmd */
fdctrl->data_len = 4;
goto enqueue;
case 0x14:
case FD_CMD_UNLOCK:
/* UNLOCK */
FLOPPY_DPRINTF("UNLOCK command\n");
/* No parameters cmd */
@ -1512,20 +1609,20 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->fifo[0] = 0;
fdctrl_set_fifo(fdctrl, 1, 0);
return;
case 0x17:
case FD_CMD_POWERDOWN_MODE:
/* POWERDOWN_MODE */
FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
/* 2 parameters cmd */
fdctrl->data_len = 3;
goto enqueue;
case 0x18:
case FD_CMD_PART_ID:
/* PART_ID */
FLOPPY_DPRINTF("PART_ID command\n");
/* No parameters cmd */
fdctrl->fifo[0] = 0x41; /* Stepping 1 */
fdctrl_set_fifo(fdctrl, 1, 0);
return;
case 0x2C:
case FD_CMD_SAVE:
/* SAVE */
FLOPPY_DPRINTF("SAVE command\n");
/* No parameters cmd */
@ -1549,49 +1646,49 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->fifo[14] = 0;
fdctrl_set_fifo(fdctrl, 15, 1);
return;
case 0x33:
case FD_CMD_OPTION:
/* OPTION */
FLOPPY_DPRINTF("OPTION command\n");
/* 1 parameter cmd */
fdctrl->data_len = 2;
goto enqueue;
case 0x42:
case FD_CMD_READ_TRACK:
/* READ_TRACK */
FLOPPY_DPRINTF("READ_TRACK command\n");
/* 8 parameters cmd */
fdctrl->data_len = 9;
goto enqueue;
case 0x4A:
case FD_CMD_READ_ID:
/* READ_ID */
FLOPPY_DPRINTF("READ_ID command\n");
/* 1 parameter cmd */
fdctrl->data_len = 2;
goto enqueue;
case 0x4C:
case FD_CMD_RESTORE:
/* RESTORE */
FLOPPY_DPRINTF("RESTORE command\n");
/* 17 parameters cmd */
fdctrl->data_len = 18;
goto enqueue;
case 0x4D:
case FD_CMD_FORMAT_TRACK:
/* FORMAT_TRACK */
FLOPPY_DPRINTF("FORMAT_TRACK command\n");
/* 5 parameters cmd */
fdctrl->data_len = 6;
goto enqueue;
case 0x8E:
case FD_CMD_DRIVE_SPECIFICATION_COMMAND:
/* DRIVE_SPECIFICATION_COMMAND */
FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
/* 5 parameters cmd */
fdctrl->data_len = 6;
goto enqueue;
case 0x8F:
case FD_CMD_RELATIVE_SEEK_OUT:
/* RELATIVE_SEEK_OUT */
FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
/* 2 parameters cmd */
fdctrl->data_len = 3;
goto enqueue;
case 0x94:
case FD_CMD_LOCK:
/* LOCK */
FLOPPY_DPRINTF("LOCK command\n");
/* No parameters cmd */
@ -1599,13 +1696,13 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->fifo[0] = 0x10;
fdctrl_set_fifo(fdctrl, 1, 1);
return;
case 0xCD:
case FD_CMD_FORMAT_AND_WRITE:
/* FORMAT_AND_WRITE */
FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
/* 10 parameters cmd */
fdctrl->data_len = 11;
goto enqueue;
case 0xCF:
case FD_CMD_RELATIVE_SEEK_IN:
/* RELATIVE_SEEK_IN */
FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
/* 2 parameters cmd */
@ -1630,38 +1727,38 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
return;
}
switch (fdctrl->fifo[0] & 0x1F) {
case 0x06:
case FD_CMD_READ & 0x1F:
{
/* READ variants */
FLOPPY_DPRINTF("treat READ command\n");
fdctrl_start_transfer(fdctrl, FD_DIR_READ);
return;
}
case 0x0C:
case FD_CMD_READ_DELETED & 0x1F:
/* READ_DELETED variants */
// FLOPPY_DPRINTF("treat READ_DELETED command\n");
FLOPPY_ERROR("treat READ_DELETED command\n");
fdctrl_start_transfer_del(fdctrl, FD_DIR_READ);
return;
case 0x16:
case FD_CMD_VERIFY & 0x1F:
/* VERIFY variants */
// FLOPPY_DPRINTF("treat VERIFY command\n");
FLOPPY_ERROR("treat VERIFY command\n");
fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
return;
case 0x10:
case FD_CMD_SCAN_EQUAL & 0x1F:
/* SCAN_EQUAL variants */
// FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
FLOPPY_ERROR("treat SCAN_EQUAL command\n");
fdctrl_start_transfer(fdctrl, FD_DIR_SCANE);
return;
case 0x19:
case FD_CMD_SCAN_LOW_OR_EQUAL & 0x1F:
/* SCAN_LOW_OR_EQUAL variants */
// FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
fdctrl_start_transfer(fdctrl, FD_DIR_SCANL);
return;
case 0x1D:
case FD_CMD_SCAN_HIGH_OR_EQUAL & 0x1F:
/* SCAN_HIGH_OR_EQUAL variants */
// FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
@ -1671,12 +1768,12 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
break;
}
switch (fdctrl->fifo[0] & 0x3F) {
case 0x05:
case FD_CMD_WRITE & 0x3F:
/* WRITE variants */
FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]);
fdctrl_start_transfer(fdctrl, FD_DIR_WRITE);
return;
case 0x09:
case FD_CMD_WRITE_DELETED & 0x3F:
/* WRITE_DELETED variants */
// FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
FLOPPY_ERROR("treat WRITE_DELETED command\n");
@ -1686,7 +1783,7 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
break;
}
switch (fdctrl->fifo[0]) {
case 0x03:
case FD_CMD_SPECIFY:
/* SPECIFY */
FLOPPY_DPRINTF("treat SPECIFY command\n");
fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
@ -1695,10 +1792,10 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
/* No result back */
fdctrl_reset_fifo(fdctrl);
break;
case 0x04:
case FD_CMD_SENSE_DRIVE_STATUS:
/* SENSE_DRIVE_STATUS */
FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
/* 1 Byte status back */
@ -1709,20 +1806,20 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
0x28;
fdctrl_set_fifo(fdctrl, 1, 0);
break;
case 0x07:
case FD_CMD_RECALIBRATE:
/* RECALIBRATE */
FLOPPY_DPRINTF("treat RECALIBRATE command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
fd_recalibrate(cur_drv);
fdctrl_reset_fifo(fdctrl);
/* Raise Interrupt */
fdctrl_raise_irq(fdctrl, 0x20);
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
break;
case 0x0F:
case FD_CMD_SEEK:
/* SEEK */
FLOPPY_DPRINTF("treat SEEK command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
fd_start(cur_drv);
if (fdctrl->fifo[2] <= cur_drv->track)
@ -1731,14 +1828,14 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
cur_drv->dir = 0;
fdctrl_reset_fifo(fdctrl);
if (fdctrl->fifo[2] > cur_drv->max_track) {
fdctrl_raise_irq(fdctrl, 0x60);
fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
} else {
cur_drv->track = fdctrl->fifo[2];
/* Raise Interrupt */
fdctrl_raise_irq(fdctrl, 0x20);
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
}
break;
case 0x12:
case FD_CMD_PERPENDICULAR_MODE:
/* PERPENDICULAR_MODE */
FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
if (fdctrl->fifo[1] & 0x80)
@ -1746,7 +1843,7 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
/* No result back */
fdctrl_reset_fifo(fdctrl);
break;
case 0x13:
case FD_CMD_CONFIGURE:
/* CONFIGURE */
FLOPPY_DPRINTF("treat CONFIGURE command\n");
fdctrl->config = fdctrl->fifo[2];
@ -1754,26 +1851,26 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
/* No result back */
fdctrl_reset_fifo(fdctrl);
break;
case 0x17:
case FD_CMD_POWERDOWN_MODE:
/* POWERDOWN_MODE */
FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
fdctrl->pwrd = fdctrl->fifo[1];
fdctrl->fifo[0] = fdctrl->fifo[1];
fdctrl_set_fifo(fdctrl, 1, 1);
break;
case 0x33:
case FD_CMD_OPTION:
/* OPTION */
FLOPPY_DPRINTF("treat OPTION command\n");
/* No result back */
fdctrl_reset_fifo(fdctrl);
break;
case 0x42:
case FD_CMD_READ_TRACK:
/* READ_TRACK */
// FLOPPY_DPRINTF("treat READ_TRACK command\n");
FLOPPY_DPRINTF("treat READ_TRACK command\n");
FLOPPY_ERROR("treat READ_TRACK command\n");
fdctrl_start_transfer(fdctrl, FD_DIR_READ);
break;
case 0x4A:
case FD_CMD_READ_ID:
/* READ_ID */
FLOPPY_DPRINTF("treat READ_ID command\n");
/* XXX: should set main status register to busy */
@ -1781,7 +1878,7 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
qemu_mod_timer(fdctrl->result_timer,
qemu_get_clock(vm_clock) + (ticks_per_sec / 50));
break;
case 0x4C:
case FD_CMD_RESTORE:
/* RESTORE */
FLOPPY_DPRINTF("treat RESTORE command\n");
/* Drives position */
@ -1798,10 +1895,10 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->pwrd = fdctrl->fifo[13];
fdctrl_reset_fifo(fdctrl);
break;
case 0x4D:
case FD_CMD_FORMAT_TRACK:
/* FORMAT_TRACK */
FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
fdctrl->data_state |= FD_STATE_FORMAT;
if (fdctrl->fifo[0] & 0x80)
@ -1825,7 +1922,7 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl->data_state &= ~FD_STATE_FORMAT;
fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
break;
case 0x8E:
case FD_CMD_DRIVE_SPECIFICATION_COMMAND:
/* DRIVE_SPECIFICATION_COMMAND */
FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
@ -1845,10 +1942,10 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
fdctrl_set_fifo(fdctrl, 1, 1);
}
break;
case 0x8F:
case FD_CMD_RELATIVE_SEEK_OUT:
/* RELATIVE_SEEK_OUT */
FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
fd_start(cur_drv);
cur_drv->dir = 0;
@ -1858,18 +1955,18 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
cur_drv->track += fdctrl->fifo[2];
}
fdctrl_reset_fifo(fdctrl);
fdctrl_raise_irq(fdctrl, 0x20);
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
break;
case 0xCD:
case FD_CMD_FORMAT_AND_WRITE:
/* FORMAT_AND_WRITE */
// FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
fdctrl_unimplemented(fdctrl);
break;
case 0xCF:
case FD_CMD_RELATIVE_SEEK_IN:
/* RELATIVE_SEEK_IN */
FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
fd_start(cur_drv);
cur_drv->dir = 1;
@ -1880,7 +1977,7 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
}
fdctrl_reset_fifo(fdctrl);
/* Raise Interrupt */
fdctrl_raise_irq(fdctrl, 0x20);
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
break;
}
}