uint8_t data_buf[DATA_BUFFER_SIZE];
+
+ uint32_t num_cylinders;
+ uint32_t num_heads;
+ uint32_t num_sectors;
+
void * private_data;
union {
/* IO Operations */
static int dma_read(struct vm_device * dev, struct ide_channel * channel) {
struct ide_drive * drive = get_selected_drive(channel);
+ // This is at top level scope to do the EOT test at the end
struct ide_dma_prd prd_entry;
- uint32_t prd_entry_addr = channel->dma_prd_addr + (sizeof(struct ide_dma_prd) * channel->dma_tbl_index);
- int ret;
- PrintDebug("PRD table address = %x\n", channel->dma_prd_addr);
+ // Read in the data buffer....
+ // Read a sector/block at a time until the prd entry is full.
- ret = read_guest_pa_memory(dev->vm, prd_entry_addr, sizeof(struct ide_dma_prd), (void *)&prd_entry);
+ if (drive->drive_type == IDE_DISK) {
+ uint_t bytes_left = drive->transfer_length;
- if (ret != sizeof(struct ide_dma_prd)) {
- PrintError("Could not read PRD\n");
- return -1;
- }
+ // Loop through the disk data
+ while (bytes_left > 0) {
- PrintDebug("PRD Addr: %x, PDR Len: %d, EOT: %d\n", prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table);
+ uint32_t prd_entry_addr = channel->dma_prd_addr + (sizeof(struct ide_dma_prd) * channel->dma_tbl_index);
+ uint_t prd_bytes_left = 0;
+ uint_t prd_offset = 0;
+ int ret;
+
+ PrintDebug("PRD table address = %x\n", channel->dma_prd_addr);
+
+ ret = read_guest_pa_memory(dev->vm, prd_entry_addr, sizeof(struct ide_dma_prd), (void *)&prd_entry);
+
+ if (ret != sizeof(struct ide_dma_prd)) {
+ PrintError("Could not read PRD\n");
+ return -1;
+ }
+
+ PrintDebug("PRD Addr: %x, PDR Len: %d, EOT: %d\n", prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table);
+
+ // loop through the PRD data....
+
+ prd_bytes_left = prd_entry.size;
- ret = write_guest_pa_memory(dev->vm, prd_entry.base_addr, prd_entry.size, drive->data_buf);
- if (ret != prd_entry.size) {
- PrintError("Failed to copy data into guest memory... (ret=%d)\n", ret);
- return -1;
- }
+ while (prd_bytes_left > 0) {
+ uint_t bytes_to_write = (prd_bytes_left > IDE_SECTOR_SIZE) ? IDE_SECTOR_SIZE : prd_bytes_left;
+ if (ata_read(dev, channel, drive->data_buf, 1) == -1) {
+ PrintError("Failed to read next disk sector\n");
+ return -1;
+ }
+
+ drive->current_lba++;
+
+ ret = write_guest_pa_memory(dev->vm, prd_entry.base_addr + prd_offset, bytes_to_write, drive->data_buf);
+
+ if (ret != bytes_to_write) {
+ PrintError("Failed to copy data into guest memory... (ret=%d)\n", ret);
+ return -1;
+ }
+
+ drive->transfer_index += ret;
+ prd_bytes_left -= ret;
+ prd_offset += ret;
+ bytes_left -= ret;
+ }
+
+ channel->dma_tbl_index++;
+
+ if (drive->transfer_index % IDE_SECTOR_SIZE) {
+ PrintError("We currently don't handle sectors that span PRD descriptors\n");
+ return -1;
+ }
+
+ if ((prd_entry.end_of_table == 1) && (bytes_left > 0)) {
+ PrintError("DMA table not large enough for data transfer...\n");
+ return -1;
+ }
+
+ }
+
+ } else if (drive->drive_type == IDE_CDROM) {
+ PrintError("CDROM DMA not supported\n");
+ return -1;
+ }
/*
drive->irq_flags.io_dir = 1;
*/
+ // Update to the next PRD entry
+
// set DMA status
if (prd_entry.end_of_table) {
- channel->dma_status.active = 0;
- channel->dma_status.err = 0;
- channel->dma_status.int_gen = 1;
-
channel->status.busy = 0;
channel->status.ready = 1;
channel->status.data_req = 0;
channel->status.error = 0;
channel->status.seek_complete = 1;
+
+ channel->dma_status.active = 0;
+ channel->dma_status.err = 0;
}
ide_raise_irq(dev, channel);
uint_t channel_flag = (port & DMA_CHANNEL_FLAG) >> 3;
struct ide_channel * channel = &(ide->channels[channel_flag]);
+ PrintDebug("IDE: Writing DMA Port %x (%s) (val=%x) (len=%d) (channel=%d)\n",
+ port, dma_port_to_str(port_offset), *(uint32_t *)src, length, channel_flag);
+
switch (port_offset) {
case DMA_CMD_PORT:
channel->dma_cmd.val = *(uint8_t *)src;
break;
- case DMA_STATUS_PORT:
+ case DMA_STATUS_PORT: {
+ uint8_t val = *(uint8_t *)src;
+
if (length != 1) {
PrintError("Invalid read length for DMA status port\n");
return -1;
}
- channel->dma_status.val = *(uint8_t *)src;
+ // weirdness
+ channel->dma_status.val = ((val & 0x60) |
+ (channel->dma_status.val & 0x01) |
+ (channel->dma_status.val & ~val & 0x06));
+
break;
-
+ }
case DMA_PRD_PORT0:
case DMA_PRD_PORT1:
case DMA_PRD_PORT2:
uint_t channel_flag = (port & DMA_CHANNEL_FLAG) >> 3;
struct ide_channel * channel = &(ide->channels[channel_flag]);
+ PrintDebug("Reading DMA port %d (%x) (channel=%d)\n", port, port, channel_flag);
+
switch (port_offset) {
case DMA_CMD_PORT:
*(uint8_t *)dst = channel->dma_cmd.val;
return -1;
}
- PrintDebug("\tval=%x\n", *(uint32_t *)dst);
+ PrintDebug("\tval=%x (len=%d)\n", *(uint32_t *)dst, length);
return length;
}
break;
case 0xc8: // Read DMA with retry
- case 0xc9: // Read DMA
+ case 0xc9: { // Read DMA
+ uint32_t sect_cnt = (drive->sector_count == 0) ? 256 : drive->sector_count;
+
+ if (ata_get_lba(dev, channel, &(drive->current_lba)) == -1) {
+ ide_abort_command(dev, channel);
+ return 0;
+ }
+
drive->hd_state.cur_sector_num = 1;
+
+ drive->transfer_length = sect_cnt * IDE_SECTOR_SIZE;
+ drive->transfer_index = 0;
+ if (channel->dma_status.active == 1) {
+ // DMA Read
+ if (dma_read(dev, channel) == -1) {
+ PrintError("Failed DMA Read\n");
+ return -1;
+ }
+ }
break;
+ }
case 0xef: // Set Features
// Prior to this the features register has been written to.
// This command tells the drive to check if the new value is supported (the value is drive specific)
drive->transfer_length = 0;
memset(drive->data_buf, 0, sizeof(drive->data_buf));
+ drive->num_cylinders = 0;
+ drive->num_heads = 0;
+ drive->num_sectors = 0;
+
drive->private_data = NULL;
drive->cd_ops = NULL;
pci_dev->config_header.vendor_id = 0x8086;
pci_dev->config_header.device_id = 0x7010;
- pci_dev->config_header.revision = 0x8000;
+ pci_dev->config_header.revision = 0x00;
+ pci_dev->config_header.prog_if = 0x80;
pci_dev->config_header.subclass = 0x01;
pci_dev->config_header.class = 0x01;
pci_dev->config_header.command = 0;
pci_dev->config_header.status = 0x0280;
+
+ ide->ide_pci = pci_dev;
+
+
}
return 0;
+int v3_ide_get_geometry(struct vm_device * ide_dev, int channel_num, int drive_num,
+ uint32_t * cylinders, uint32_t * heads, uint32_t * sectors) {
+
+ struct ide_internal * ide = (struct ide_internal *)(ide_dev->private_data);
+ struct ide_channel * channel = &(ide->channels[channel_num]);
+ struct ide_drive * drive = &(channel->drives[drive_num]);
+
+ if (drive->drive_type == IDE_NONE) {
+ return -1;
+ }
+
+ *cylinders = drive->num_cylinders;
+ *heads = drive->num_heads;
+ *sectors = drive->num_sectors;
+
+ return 0;
+}
+
+
int v3_ide_register_cdrom(struct vm_device * ide_dev,
drive->cd_ops = ops;
+ if (ide->ide_pci) {
+ // Hardcode this for now, but its not a good idea....
+ ide->ide_pci->config_space[0x41 + (bus_num * 2)] = 0x80;
+ }
+
drive->private_data = private_data;
return 0;
drive->hd_ops = ops;
+ /* this is something of a hack... */
+ drive->num_sectors = 63;
+ drive->num_heads = 16;
+ drive->num_cylinders = (ops->get_capacity(private_data) / 512) / (drive->num_sectors * drive->num_heads);
+
+ if (ide->ide_pci) {
+ // Hardcode this for now, but its not a good idea....
+ ide->ide_pci->config_space[0x41 + (bus_num * 2)] = 0x80;
+ }
+
+
+
drive->private_data = private_data;
return 0;
