X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fide.c;h=361bed0d2d7a052331d23cd03d5a796458237512;hb=326a9425e1dc7a9f7afafe2951b55f35d9ff2422;hp=f9695de5e1a8c2e5cd9ae1d0852ee037cf9e8138;hpb=d0886c953a9e5969ee0f54f11bb146bfe888bfe3;p=palacios.git diff --git a/palacios/src/devices/ide.c b/palacios/src/devices/ide.c index f9695de..361bed0 100644 --- a/palacios/src/devices/ide.c +++ b/palacios/src/devices/ide.c @@ -354,8 +354,8 @@ static void ide_abort_command(struct vm_device * dev, struct ide_channel * chann } - - +static int dma_read(struct vm_device * dev, struct ide_channel * channel); +static int dma_write(struct vm_device * dev, struct ide_channel * channel); /* ATAPI functions */ @@ -371,78 +371,98 @@ 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; + uint_t bytes_left = drive->transfer_length; // Read in the data buffer.... // Read a sector/block at a time until the prd entry is full. - if (drive->drive_type == IDE_DISK) { - uint_t bytes_left = drive->transfer_length; - // Loop through the disk data - while (bytes_left > 0) { + PrintDebug("DMA read for %d bytes\n", bytes_left); - 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 disk data + while (bytes_left > 0) { + 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; - // loop through the PRD data.... + 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, PRD 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; + + + while (prd_bytes_left > 0) { + uint_t bytes_to_write = 0; - prd_bytes_left = prd_entry.size; - - - while (prd_bytes_left > 0) { - uint_t bytes_to_write = (prd_bytes_left > IDE_SECTOR_SIZE) ? IDE_SECTOR_SIZE : prd_bytes_left; - - + if (drive->drive_type == IDE_DISK) { + 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++; + } else if (drive->drive_type == IDE_CDROM) { + bytes_to_write = (prd_bytes_left > ATAPI_BLOCK_SIZE) ? ATAPI_BLOCK_SIZE : prd_bytes_left; - 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); + if (atapi_read_chunk(dev, channel) == -1) { + PrintError("Failed to read next disk sector\n"); return -1; } - - drive->transfer_index += ret; - prd_bytes_left -= ret; - prd_offset += ret; - bytes_left -= ret; } - channel->dma_tbl_index++; + PrintDebug("Writing DMA data to guest Memory ptr=%p, len=%d\n", + (void *)(addr_t)(prd_entry.base_addr + prd_offset), bytes_to_write); + + 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; + } + + PrintDebug("\t DMA ret=%d, (prd_bytes_left=%d) (bytes_left=%d)\n", ret, prd_bytes_left, bytes_left); + + drive->transfer_index += ret; + prd_bytes_left -= ret; + prd_offset += ret; + bytes_left -= ret; + } + + channel->dma_tbl_index++; + + if (drive->drive_type == IDE_DISK) { 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"); + } else if (drive->drive_type == IDE_CDROM) { + if (drive->transfer_index % ATAPI_BLOCK_SIZE) { + PrintError("We currently don't handle ATAPI BLOCKS that span PRD descriptors\n"); return -1; } - } - - } else if (drive->drive_type == IDE_CDROM) { - PrintError("CDROM DMA not supported\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; + } } /* @@ -474,9 +494,92 @@ static int dma_read(struct vm_device * dev, struct ide_channel * channel) { static int dma_write(struct vm_device * dev, struct ide_channel * channel) { - // unsupported - PrintError("DMA writes currently not supported\n"); - return -1; + 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; + uint_t bytes_left = drive->transfer_length; + + + PrintDebug("DMA write from %d bytes\n", bytes_left); + + // Loop through disk data + while (bytes_left > 0) { + 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, PRD Len: %d, EOT: %d\n", + prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table); + + prd_bytes_left = prd_entry.size; + + while (prd_bytes_left > 0) { + uint_t bytes_to_write = 0; + + + bytes_to_write = (prd_bytes_left > IDE_SECTOR_SIZE) ? IDE_SECTOR_SIZE : prd_bytes_left; + + + ret = read_guest_pa_memory(dev->vm, prd_entry.base_addr + prd_offset, bytes_to_write, drive->data_buf); + + if (ret != bytes_to_write) { + PrintError("Faild to copy data from guest memory... (ret=%d)\n", ret); + return -1; + } + + PrintDebug("\t DMA ret=%d (prd_bytes_left=%d) (bytes_left=%d)\n", ret, prd_bytes_left, bytes_left); + + + if (ata_write(dev, channel, drive->data_buf, 1) == -1) { + PrintError("Failed to write data to disk\n"); + return -1; + } + + drive->current_lba++; + + 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; + } + } + + if (prd_entry.end_of_table) { + 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); + + return 0; } @@ -733,6 +836,44 @@ static int write_cmd_port(ushort_t port, void * src, uint_t length, struct vm_de } break; } + + case 0xca: { // Write 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 Write + if (dma_write(dev, channel) == -1) { + PrintError("Failed DMA Write\n"); + return -1; + } + } + break; + } + case 0xe0: // Standby Now 1 + case 0xe1: // Set Idle Immediate + case 0xe2: // Standby + case 0xe3: // Set Idle 1 + case 0xe6: // Sleep Now 1 + case 0x94: // Standby Now 2 + case 0x95: // Idle Immediate (CFA) + case 0x96: // Standby 2 + case 0x97: // Set idle 2 + case 0x99: // Sleep Now 2 + channel->status.val = 0; + channel->status.ready = 1; + ide_raise_irq(dev, channel); + 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) @@ -910,8 +1051,7 @@ static int read_cd_data(uint8_t * dst, uint_t length, struct vm_device * dev, st return -1; } - - + if ((data_offset == 0) && (drive->transfer_index > 0)) { if (atapi_update_data_buf(dev, channel) == -1) { PrintError("Could not update CDROM data buffer\n"); @@ -1494,7 +1634,7 @@ int v3_ide_register_harddisk(struct vm_device * ide_dev, /* 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); + drive->num_cylinders = ops->get_capacity(private_data) / (drive->num_sectors * drive->num_heads); if (ide->ide_pci) { // Hardcode this for now, but its not a good idea....