diff options
| -rw-r--r-- | hw/ide.c | 127 |
1 files changed, 112 insertions, 15 deletions
@@ -1,5 +1,5 @@ /* - * QEMU IDE disk and CD-ROM Emulator + * QEMU IDE disk and CD/DVD-ROM Emulator * * Copyright (c) 2003 Fabrice Bellard * Copyright (c) 2006 Openedhand Ltd. @@ -284,6 +284,58 @@ * of MODE_SENSE_POWER_PAGE */ #define GPMODE_CDROM_PAGE 0x0d +/* + * Based on values from <linux/cdrom.h> but extending CD_MINS + * to the maximum common size allowed by the Orange's Book ATIP + * + * 90 and 99 min CDs are also available but using them as the + * upper limit reduces the effectiveness of the heuristic to + * detect DVDs burned to less than 25% of their maximum capacity + */ + +/* Some generally useful CD-ROM information */ +#define CD_MINS 80 /* max. minutes per CD */ +#define CD_SECS 60 /* seconds per minute */ +#define CD_FRAMES 75 /* frames per second */ +#define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */ +#define CD_MAX_BYTES (CD_MINS * CD_SECS * CD_FRAMES * CD_FRAMESIZE) +#define CD_MAX_SECTORS (CD_MAX_BYTES / 512) + +/* + * The MMC values are not IDE specific and might need to be moved + * to a common header if they are also needed for the SCSI emulation + */ + +/* Profile list from MMC-6 revision 1 table 91 */ +#define MMC_PROFILE_NONE 0x0000 +#define MMC_PROFILE_CD_ROM 0x0008 +#define MMC_PROFILE_CD_R 0x0009 +#define MMC_PROFILE_CD_RW 0x000A +#define MMC_PROFILE_DVD_ROM 0x0010 +#define MMC_PROFILE_DVD_R_SR 0x0011 +#define MMC_PROFILE_DVD_RAM 0x0012 +#define MMC_PROFILE_DVD_RW_RO 0x0013 +#define MMC_PROFILE_DVD_RW_SR 0x0014 +#define MMC_PROFILE_DVD_R_DL_SR 0x0015 +#define MMC_PROFILE_DVD_R_DL_JR 0x0016 +#define MMC_PROFILE_DVD_RW_DL 0x0017 +#define MMC_PROFILE_DVD_DDR 0x0018 +#define MMC_PROFILE_DVD_PLUS_RW 0x001A +#define MMC_PROFILE_DVD_PLUS_R 0x001B +#define MMC_PROFILE_DVD_PLUS_RW_DL 0x002A +#define MMC_PROFILE_DVD_PLUS_R_DL 0x002B +#define MMC_PROFILE_BD_ROM 0x0040 +#define MMC_PROFILE_BD_R_SRM 0x0041 +#define MMC_PROFILE_BD_R_RRM 0x0042 +#define MMC_PROFILE_BD_RE 0x0043 +#define MMC_PROFILE_HDDVD_ROM 0x0050 +#define MMC_PROFILE_HDDVD_R 0x0051 +#define MMC_PROFILE_HDDVD_RAM 0x0052 +#define MMC_PROFILE_HDDVD_RW 0x0053 +#define MMC_PROFILE_HDDVD_R_DL 0x0058 +#define MMC_PROFILE_HDDVD_RW_DL 0x005A +#define MMC_PROFILE_INVALID 0xFFFF + #define ATAPI_INT_REASON_CD 0x01 /* 0 = data transfer */ #define ATAPI_INT_REASON_IO 0x02 /* 1 = transfer to the host */ #define ATAPI_INT_REASON_REL 0x04 @@ -540,7 +592,7 @@ static void ide_atapi_identify(IDEState *s) put_le16(p + 21, 512); /* cache size in sectors */ put_le16(p + 22, 4); /* ecc bytes */ padstr((char *)(p + 23), QEMU_VERSION, 8); /* firmware version */ - padstr((char *)(p + 27), "QEMU CD-ROM", 40); /* model */ + padstr((char *)(p + 27), "QEMU DVD-ROM", 40); /* model */ put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */ #ifdef USE_DMA_CDROM put_le16(p + 49, 1 << 9 | 1 << 8); /* DMA and LBA supported */ @@ -1290,6 +1342,22 @@ static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors, } } +static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index, + uint16_t profile) +{ + uint8_t *buf_profile = buf + 12; /* start of profiles */ + + buf_profile += ((*index) * 4); /* start of indexed profile */ + cpu_to_ube16 (buf_profile, profile); + buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7])); + + /* each profile adds 4 bytes to the response */ + (*index)++; + buf[11] += 4; /* Additional Length */ + + return 4; +} + static void ide_atapi_cmd(IDEState *s) { const uint8_t *packet; @@ -1634,13 +1702,13 @@ static void ide_atapi_cmd(IDEState *s) buf[6] = 0; /* reserved */ buf[7] = 0; /* reserved */ padstr8(buf + 8, 8, "QEMU"); - padstr8(buf + 16, 16, "QEMU CD-ROM"); + padstr8(buf + 16, 16, "QEMU DVD-ROM"); padstr8(buf + 32, 4, QEMU_VERSION); ide_atapi_cmd_reply(s, 36, max_len); break; case GPCMD_GET_CONFIGURATION: { - uint64_t total_sectors; + uint32_t len; /* only feature 0 is supported */ if (packet[2] != 0 || packet[3] != 0) { @@ -1648,17 +1716,46 @@ static void ide_atapi_cmd(IDEState *s) ASC_INV_FIELD_IN_CMD_PACKET); break; } - memset(buf, 0, 32); - bdrv_get_geometry(s->bs, &total_sectors); - buf[3] = 16; - buf[7] = total_sectors <= 1433600 ? 0x08 : 0x10; /* current profile */ - buf[10] = 0x10 | 0x1; - buf[11] = 0x08; /* size of profile list */ - buf[13] = 0x10; /* DVD-ROM profile */ - buf[14] = buf[7] == 0x10; /* (in)active */ - buf[17] = 0x08; /* CD-ROM profile */ - buf[18] = buf[7] == 0x08; /* (in)active */ - ide_atapi_cmd_reply(s, 32, 32); + + /* XXX: could result in alignment problems in some architectures */ + max_len = ube16_to_cpu(packet + 7); + /* + * XXX: avoid overflow for io_buffer if max_len is bigger than the + * size of that buffer (dimensioned to max number of sectors + * to transfer at once) + * + * Only a problem if the feature/profiles grow exponentially. + */ + if (max_len > 512) /* XXX: assume 1 sector */ + max_len = 512; + + memset(buf, 0, max_len); + /* + * the number of sectors from the media tells us which profile + * to use as current. 0 means there is no media + * + * XXX: fails to detect correctly DVDs with less data burned + * than what a CD can hold + */ + if ((s -> nb_sectors)) { + if ((s -> nb_sectors > CD_MAX_SECTORS)) + cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM); + else + cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM); + } + + len = 8; /* header completed */ + if (max_len > len) { + uint8_t index = 0; + + buf[10] = 0x02 | 0x01; /* persistent and current */ + len += 4; /* header */ + len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM); + len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM); + } + cpu_to_ube32(buf, len - 4); /* data length */ + + ide_atapi_cmd_reply(s, len, max_len); break; } default: |