static int fdctrl_transfer_handler (void *opaque, int nchan,
int dma_pos, int dma_len);
static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status);
-static void fdctrl_result_timer(void *opaque);
static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
fdctrl_reset(s, 0);
}
-static fdctrl_t *fdctrl_init_common (qemu_irq irq, int dma_chann,
- target_phys_addr_t io_base,
- BlockDriverState **fds)
-{
- fdctrl_t *fdctrl;
- int i;
-
- FLOPPY_DPRINTF("init controller\n");
- fdctrl = qemu_mallocz(sizeof(fdctrl_t));
- if (!fdctrl)
- return NULL;
- fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
- if (fdctrl->fifo == NULL) {
- qemu_free(fdctrl);
- return NULL;
- }
- fdctrl->result_timer = qemu_new_timer(vm_clock,
- fdctrl_result_timer, fdctrl);
-
- fdctrl->version = 0x90; /* Intel 82078 controller */
- fdctrl->irq = irq;
- fdctrl->dma_chann = dma_chann;
- fdctrl->io_base = io_base;
- 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 < 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 < MAX_FD; i++) {
- fd_revalidate(&fdctrl->drives[i]);
- }
-
- return fdctrl;
-}
-
-fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped,
- target_phys_addr_t io_base,
- BlockDriverState **fds)
-{
- fdctrl_t *fdctrl;
- int io_mem;
-
- fdctrl = fdctrl_init_common(irq, dma_chann, io_base, fds);
-
- fdctrl->sun4m = 0;
- if (mem_mapped) {
- io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write,
- fdctrl);
- cpu_register_physical_memory(io_base, 0x08, io_mem);
- } else {
- register_ioport_read((uint32_t)io_base + 0x01, 5, 1, &fdctrl_read,
- fdctrl);
- register_ioport_read((uint32_t)io_base + 0x07, 1, 1, &fdctrl_read,
- fdctrl);
- register_ioport_write((uint32_t)io_base + 0x01, 5, 1, &fdctrl_write,
- fdctrl);
- register_ioport_write((uint32_t)io_base + 0x07, 1, 1, &fdctrl_write,
- fdctrl);
- }
-
- return fdctrl;
-}
-
static void fdctrl_handle_tc(void *opaque, int irq, int level)
{
//fdctrl_t *s = opaque;
}
}
-fdctrl_t *sun4m_fdctrl_init (qemu_irq irq, target_phys_addr_t io_base,
- BlockDriverState **fds, qemu_irq *fdc_tc)
-{
- fdctrl_t *fdctrl;
- int io_mem;
-
- fdctrl = fdctrl_init_common(irq, 0, io_base, fds);
- fdctrl->sun4m = 1;
- io_mem = cpu_register_io_memory(0, fdctrl_mem_read_strict,
- fdctrl_mem_write_strict,
- fdctrl);
- cpu_register_physical_memory(io_base, 0x08, io_mem);
- *fdc_tc = *qemu_allocate_irqs(fdctrl_handle_tc, fdctrl, 1);
-
- return fdctrl;
-}
-
/* XXX: may change if moved to bdrv */
int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num)
{
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
}
+static const struct {
+ uint8_t value;
+ uint8_t mask;
+ const char* name;
+ int parameters;
+ void (*handler)(fdctrl_t *fdctrl, int direction);
+ int direction;
+} handlers[] = {
+ { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
+ { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
+ { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
+ { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
+ { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
+ { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
+ { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
+ { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
+ { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
+ { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
+ { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
+ { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
+ { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
+ { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
+ { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
+ { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
+ { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
+ { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
+ { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
+ { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
+ { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
+ { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
+ { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
+ { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
+ { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
+ { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
+ { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
+ { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
+ { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
+ { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
+ { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
+ { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
+};
+/* Associate command to an index in the 'handlers' array */
+static uint8_t command_to_handler[256];
+
static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
{
fdrive_t *cur_drv;
int pos;
- static const struct {
- uint8_t value;
- uint8_t mask;
- const char* name;
- int parameters;
- void (*handler)(fdctrl_t *fdctrl, int direction);
- int parameter;
- } commands[] = {
- { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
- { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
- { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
- { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
- { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
- { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
- { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
- { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
- { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
- { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
- { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
- { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
- { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
- { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
- { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
- { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
- { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
- { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
- { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
- { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
- { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
- { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
- { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
- { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
- { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
- { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
- { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
- { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
- { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
- { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
- { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
- };
cur_drv = get_cur_drv(fdctrl);
/* Reset mode */
}
if (fdctrl->data_pos == 0) {
/* Command */
- for (pos = 0; pos < sizeof(commands)/sizeof(commands[0]); pos++) {
- if ((value & commands[pos].mask) == commands[pos].value) {
- FLOPPY_DPRINTF("%s command\n", commands[pos].name);
- fdctrl->data_len = commands[pos].parameters + 1;
- goto enqueue;
- }
- }
-
- /* Unknown command */
- FLOPPY_ERROR("unknown command: 0x%02x\n", value);
- fdctrl_unimplemented(fdctrl, 0);
- return;
+ pos = command_to_handler[value & 0xff];
+ FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
+ fdctrl->data_len = handlers[pos].parameters + 1;
}
- enqueue:
+
FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
fdctrl->fifo[fdctrl->data_pos] = value;
if (++fdctrl->data_pos == fdctrl->data_len) {
return;
}
- for (pos = 0; pos < sizeof(commands)/sizeof(commands[0]); pos++) {
- if ((fdctrl->fifo[0] & commands[pos].mask) == commands[pos].value) {
- FLOPPY_DPRINTF("treat %s command\n", commands[pos].name);
- (*commands[pos].handler)(fdctrl, commands[pos].parameter);
- break;
- }
- }
+ pos = command_to_handler[fdctrl->fifo[0] & 0xff];
+ FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
+ (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
}
}
}
fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
}
+
+/* Init functions */
+static fdctrl_t *fdctrl_init_common (qemu_irq irq, int dma_chann,
+ target_phys_addr_t io_base,
+ BlockDriverState **fds)
+{
+ fdctrl_t *fdctrl;
+ int i, j;
+
+ /* Fill 'command_to_handler' lookup table */
+ for (i = sizeof(handlers)/sizeof(handlers[0]) - 1; i >= 0; i--) {
+ for (j = 0; j < sizeof(command_to_handler); j++) {
+ if ((j & handlers[i].mask) == handlers[i].value)
+ command_to_handler[j] = i;
+ }
+ }
+
+ FLOPPY_DPRINTF("init controller\n");
+ fdctrl = qemu_mallocz(sizeof(fdctrl_t));
+ if (!fdctrl)
+ return NULL;
+ fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
+ if (fdctrl->fifo == NULL) {
+ qemu_free(fdctrl);
+ return NULL;
+ }
+ fdctrl->result_timer = qemu_new_timer(vm_clock,
+ fdctrl_result_timer, fdctrl);
+
+ fdctrl->version = 0x90; /* Intel 82078 controller */
+ fdctrl->irq = irq;
+ fdctrl->dma_chann = dma_chann;
+ fdctrl->io_base = io_base;
+ 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 < 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 < MAX_FD; i++) {
+ fd_revalidate(&fdctrl->drives[i]);
+ }
+
+ return fdctrl;
+}
+
+fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped,
+ target_phys_addr_t io_base,
+ BlockDriverState **fds)
+{
+ fdctrl_t *fdctrl;
+ int io_mem;
+
+ fdctrl = fdctrl_init_common(irq, dma_chann, io_base, fds);
+
+ fdctrl->sun4m = 0;
+ if (mem_mapped) {
+ io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write,
+ fdctrl);
+ cpu_register_physical_memory(io_base, 0x08, io_mem);
+ } else {
+ register_ioport_read((uint32_t)io_base + 0x01, 5, 1, &fdctrl_read,
+ fdctrl);
+ register_ioport_read((uint32_t)io_base + 0x07, 1, 1, &fdctrl_read,
+ fdctrl);
+ register_ioport_write((uint32_t)io_base + 0x01, 5, 1, &fdctrl_write,
+ fdctrl);
+ register_ioport_write((uint32_t)io_base + 0x07, 1, 1, &fdctrl_write,
+ fdctrl);
+ }
+
+ return fdctrl;
+}
+
+fdctrl_t *sun4m_fdctrl_init (qemu_irq irq, target_phys_addr_t io_base,
+ BlockDriverState **fds, qemu_irq *fdc_tc)
+{
+ fdctrl_t *fdctrl;
+ int io_mem;
+
+ fdctrl = fdctrl_init_common(irq, 0, io_base, fds);
+ fdctrl->sun4m = 1;
+ io_mem = cpu_register_io_memory(0, fdctrl_mem_read_strict,
+ fdctrl_mem_write_strict,
+ fdctrl);
+ cpu_register_physical_memory(io_base, 0x08, io_mem);
+ *fdc_tc = *qemu_allocate_irqs(fdctrl_handle_tc, fdctrl, 1);
+
+ return fdctrl;
+}