| /* |
| * QEMU ATAPI CD-ROM Emulator |
| * |
| * Copyright (c) 2006 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| /* ??? Most of the ATAPI emulation is still in ide.c. It should be moved |
| here. */ |
| |
| #include "qemu-common.h" |
| #include "hw/scsi.h" |
| |
| static void lba_to_msf(uint8_t *buf, int lba) |
| { |
| lba += 150; |
| buf[0] = (lba / 75) / 60; |
| buf[1] = (lba / 75) % 60; |
| buf[2] = lba % 75; |
| } |
| |
| /* same toc as bochs. Return -1 if error or the toc length */ |
| /* XXX: check this */ |
| int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track) |
| { |
| uint8_t *q; |
| int len; |
| |
| if (start_track > 1 && start_track != 0xaa) |
| return -1; |
| q = buf + 2; |
| *q++ = 1; /* first session */ |
| *q++ = 1; /* last session */ |
| if (start_track <= 1) { |
| *q++ = 0; /* reserved */ |
| *q++ = 0x14; /* ADR, control */ |
| *q++ = 1; /* track number */ |
| *q++ = 0; /* reserved */ |
| if (msf) { |
| *q++ = 0; /* reserved */ |
| lba_to_msf(q, 0); |
| q += 3; |
| } else { |
| /* sector 0 */ |
| cpu_to_be32wu((uint32_t *)q, 0); |
| q += 4; |
| } |
| } |
| /* lead out track */ |
| *q++ = 0; /* reserved */ |
| *q++ = 0x16; /* ADR, control */ |
| *q++ = 0xaa; /* track number */ |
| *q++ = 0; /* reserved */ |
| if (msf) { |
| *q++ = 0; /* reserved */ |
| lba_to_msf(q, nb_sectors); |
| q += 3; |
| } else { |
| cpu_to_be32wu((uint32_t *)q, nb_sectors); |
| q += 4; |
| } |
| len = q - buf; |
| cpu_to_be16wu((uint16_t *)buf, len - 2); |
| return len; |
| } |
| |
| /* mostly same info as PearPc */ |
| int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num) |
| { |
| uint8_t *q; |
| int len; |
| |
| q = buf + 2; |
| *q++ = 1; /* first session */ |
| *q++ = 1; /* last session */ |
| |
| *q++ = 1; /* session number */ |
| *q++ = 0x14; /* data track */ |
| *q++ = 0; /* track number */ |
| *q++ = 0xa0; /* lead-in */ |
| *q++ = 0; /* min */ |
| *q++ = 0; /* sec */ |
| *q++ = 0; /* frame */ |
| *q++ = 0; |
| *q++ = 1; /* first track */ |
| *q++ = 0x00; /* disk type */ |
| *q++ = 0x00; |
| |
| *q++ = 1; /* session number */ |
| *q++ = 0x14; /* data track */ |
| *q++ = 0; /* track number */ |
| *q++ = 0xa1; |
| *q++ = 0; /* min */ |
| *q++ = 0; /* sec */ |
| *q++ = 0; /* frame */ |
| *q++ = 0; |
| *q++ = 1; /* last track */ |
| *q++ = 0x00; |
| *q++ = 0x00; |
| |
| *q++ = 1; /* session number */ |
| *q++ = 0x14; /* data track */ |
| *q++ = 0; /* track number */ |
| *q++ = 0xa2; /* lead-out */ |
| *q++ = 0; /* min */ |
| *q++ = 0; /* sec */ |
| *q++ = 0; /* frame */ |
| if (msf) { |
| *q++ = 0; /* reserved */ |
| lba_to_msf(q, nb_sectors); |
| q += 3; |
| } else { |
| cpu_to_be32wu((uint32_t *)q, nb_sectors); |
| q += 4; |
| } |
| |
| *q++ = 1; /* session number */ |
| *q++ = 0x14; /* ADR, control */ |
| *q++ = 0; /* track number */ |
| *q++ = 1; /* point */ |
| *q++ = 0; /* min */ |
| *q++ = 0; /* sec */ |
| *q++ = 0; /* frame */ |
| if (msf) { |
| *q++ = 0; |
| lba_to_msf(q, 0); |
| q += 3; |
| } else { |
| *q++ = 0; |
| *q++ = 0; |
| *q++ = 0; |
| *q++ = 0; |
| } |
| |
| len = q - buf; |
| cpu_to_be16wu((uint16_t *)buf, len - 2); |
| return len; |
| } |