X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fatapi.h;fp=palacios%2Fsrc%2Fdevices%2Fatapi.h;h=e10d4e8c31aacbc64488fd24df733d8fda2259b6;hb=074d44443cd1dc65660b2859503ad9f72bce625a;hp=0000000000000000000000000000000000000000;hpb=5e83847991f155d6aabffc2b71f5a9224a5fbd59;p=palacios.git diff --git a/palacios/src/devices/atapi.h b/palacios/src/devices/atapi.h new file mode 100644 index 0000000..e10d4e8 --- /dev/null +++ b/palacios/src/devices/atapi.h @@ -0,0 +1,234 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2008, Jack Lange + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + +#define ATAPI_PACKET_SIZE 12 + +#include "atapi-types.h" + +static void atapi_cmd_error(struct vm_device * dev, struct ide_channel * channel, + atapi_sense_key_t sense_key, atapi_add_sense_code_t asc) { + struct ide_drive * drive = get_selected_drive(channel); + + // overload error register with ATAPI value + channel->error_reg.val = sense_key << 4; + + channel->status.busy = 0; + channel->status.ready = 1; + channel->status.write_fault = 0; + channel->status.data_req = 0; + channel->status.error = 1; + + drive->cd_state.sense.header = 0xf0; + drive->cd_state.sense.rsvd1 = 0x00; + drive->cd_state.sense.read_len = 0x0a; + drive->cd_state.sense.sense_key = sense_key; + drive->cd_state.sense.asc = asc; + + ide_raise_irq(dev, channel); +} + + +static void atapi_cmd_nop(struct vm_device * dev, struct ide_channel * channel) { + channel->status.busy = 0; + channel->status.ready = 1; + channel->status.data_req = 0; + channel->status.error = 0; + + ide_raise_irq(dev, channel); +} + + + +static int atapi_read_chunk(struct vm_device * dev, struct ide_channel * channel) { + struct ide_drive * drive = get_selected_drive(channel); + + int ret = drive->cd_ops->read(drive->data_buf, drive->cd_state.current_lba, drive->private_data); + + if (ret == -1) { + PrintError("IDE: Error reading CD block (LBA=%x)\n", drive->cd_state.current_lba); + return -1; + } + + return 0; +} + +static int atapi_read10(struct vm_device * dev, struct ide_channel * channel) { + struct ide_drive * drive = get_selected_drive(channel); + struct atapi_read10_cmd * cmd = (struct atapi_read10_cmd *)(drive->data_buf); + uint32_t lba = be_to_le_32(cmd->lba); + uint16_t xfer_len = be_to_le_16(cmd->xfer_len); + + /* Check if cd is ready + * if not: atapi_cmd_error(... ATAPI_SEN_NOT_RDY, ASC_MEDIA_NOT_PRESENT) + */ + + if (xfer_len == 0) { + atapi_cmd_nop(dev, channel); + return 0; + } + + if ((lba + xfer_len) > drive->cd_ops->get_capacity(drive->private_data)) { + atapi_cmd_error(dev, channel, ATAPI_SEN_ILL_REQ, ASC_LOG_BLK_OOR); + } + + drive->cd_state.current_lba = lba; + + + if (atapi_read_chunk(dev, channel) == -1) { + PrintError("IDE: Could not read initial chunk from CD\n"); + return -1; + } + + drive->transfer_length = xfer_len; + drive->transfer_index = 0; + + channel->status.busy = 0; + channel->status.data_req = 1; + channel->status.error = 0; + + ide_raise_irq(dev, channel); + + return 0; +} + + + +static void atapi_req_sense(struct vm_device * dev, struct ide_channel * channel) { + struct ide_drive * drive = get_selected_drive(channel); + + drive->transfer_length = 18; + drive->transfer_index = 0; + memcpy(drive->data_buf, drive->cd_state.sense.buf, sizeof(drive->cd_state.sense.buf)); + + ide_raise_irq(dev, channel); +} + +static int atapi_handle_packet(struct vm_device * dev, struct ide_channel * channel) { + struct ide_drive * drive = get_selected_drive(channel); + uint8_t command = drive->data_buf[0]; + + PrintDebug("IDE: ATAPI Command %x\n", command); + + switch (command) { + case 0x00: // test unit ready + atapi_cmd_nop(dev, channel); + + /* if drive not ready: + atapi_cmd_error(... ATAPI_SEN_NOT_RDY, ASC_MEDIA_NOT_PRESENT) + */ + break; + case 0x03: // request sense + atapi_req_sense(dev, channel); + break; + + case 0x28: // read(10) + if (atapi_read10(dev, channel) == -1) { + PrintError("IDE: Error in ATAPI read (%x)\n", command); + return -1; + } + + break; + case 0xa8: // read(12) + + + case 0x1b: // start/stop drive + case 0xbd: // mechanism status + case 0x5a: // mode sense + case 0x12: // inquiry + case 0x25: // read cdrom capacity + case 0xbe: // read cd + case 0x43: // read TOC + + + case 0x2b: // seek + case 0x1e: // lock door + case 0x42: // read sub-channel + case 0x51: // read disk info + + + case 0x55: // mode select + case 0xa6: // load/unload cd + case 0x4b: // pause/resume + case 0x45: // play audio + case 0x47: // play audio msf + case 0xbc: // play cd + case 0xb9: // read cd msf + case 0x44: // read header + case 0xba: // scan + case 0xbb: // set cd speed + case 0x4e: // stop play/scan + case 0x46: // ??? + case 0x4a: // ??? + default: + PrintError("Unhandled ATAPI command %x\n", command); + atapi_cmd_error(dev, channel, ATAPI_SEN_ILL_REQ, ASC_INV_CMD_FIELD); + ide_raise_irq(dev, channel); + return -1; + } + + return 0; +} + + +static void atapi_identify_device(struct ide_drive * drive) { + struct ide_drive_id * drive_id = (struct ide_drive_id *)(drive->data_buf); + const char* serial_number = " VT00001\0\0\0\0\0\0\0\0\0\0\0\0"; + const char* firmware = "ALPHA1 "; + + drive->transfer_length = 512; + drive->transfer_index = 0; + memset(drive_id->buf, 0, sizeof(drive_id->buf)); + + drive_id->fixed_drive = 1; + drive_id->removable_media = 1; + + // Black magic... + drive_id->disk_speed1 = 1; + drive_id->disk_speed3 = 1; + + drive_id->cdrom_flag = 1; + + // These buffers do not contain a terminating "\0" + memcpy(drive_id->serial_num, serial_number, strlen(serial_number)); + memcpy(drive_id->firmware_rev, firmware, strlen(firmware)); + memcpy(drive_id->model_num, drive->model, 40); + + // 32 bits access + drive_id->dword_io = 1; + + // enable LBA access + drive_id->lba_enable = 1; + + + // words 64-70, 54-58 valid + drive_id->buf[53] = 0x0003; + + // copied from CFA540A + drive_id->buf[63] = 0x0103; // variable (DMA stuff) + drive_id->buf[64] = 0x0001; // PIO + drive_id->buf[65] = 0x00b4; + drive_id->buf[66] = 0x00b4; + drive_id->buf[67] = 0x012c; + drive_id->buf[68] = 0x00b4; + + drive_id->buf[71] = 30; // faked + drive_id->buf[72] = 30; // faked + + drive_id->buf[80] = 0x1e; // supports up to ATA/ATAPI-4 +}