diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/block.c b/block.c index 0c923f2ae9..ce7eb8f79b 100644 --- a/block.c +++ b/block.c @@ -996,12 +996,6 @@ static void bdrv_move_feature_fields(BlockDriverState *bs_dest, bs_dest->block_timer = bs_src->block_timer; bs_dest->io_limits_enabled = bs_src->io_limits_enabled; - /* geometry */ - bs_dest->cyls = bs_src->cyls; - bs_dest->heads = bs_src->heads; - bs_dest->secs = bs_src->secs; - bs_dest->translation = bs_src->translation; - /* r/w error */ bs_dest->on_read_error = bs_src->on_read_error; bs_dest->on_write_error = bs_src->on_write_error; @@ -2132,148 +2126,6 @@ void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr) *nb_sectors_ptr = length; } -struct partition { - uint8_t boot_ind; /* 0x80 - active */ - uint8_t head; /* starting head */ - uint8_t sector; /* starting sector */ - uint8_t cyl; /* starting cylinder */ - uint8_t sys_ind; /* What partition type */ - uint8_t end_head; /* end head */ - uint8_t end_sector; /* end sector */ - uint8_t end_cyl; /* end cylinder */ - uint32_t start_sect; /* starting sector counting from 0 */ - uint32_t nr_sects; /* nr of sectors in partition */ -} QEMU_PACKED; - -/* try to guess the disk logical geometry from the MSDOS partition table. Return 0 if OK, -1 if could not guess */ -static int guess_disk_lchs(BlockDriverState *bs, - int *pcylinders, int *pheads, int *psectors) -{ - uint8_t buf[BDRV_SECTOR_SIZE]; - int i, heads, sectors, cylinders; - struct partition *p; - uint32_t nr_sects; - uint64_t nb_sectors; - - bdrv_get_geometry(bs, &nb_sectors); - - /** - * The function will be invoked during startup not only in sync I/O mode, - * but also in async I/O mode. So the I/O throttling function has to - * be disabled temporarily here, not permanently. - */ - if (bdrv_read_unthrottled(bs, 0, buf, 1) < 0) { - return -1; - } - /* test msdos magic */ - if (buf[510] != 0x55 || buf[511] != 0xaa) - return -1; - for(i = 0; i < 4; i++) { - p = ((struct partition *)(buf + 0x1be)) + i; - nr_sects = le32_to_cpu(p->nr_sects); - if (nr_sects && p->end_head) { - /* We make the assumption that the partition terminates on - a cylinder boundary */ - heads = p->end_head + 1; - sectors = p->end_sector & 63; - if (sectors == 0) - continue; - cylinders = nb_sectors / (heads * sectors); - if (cylinders < 1 || cylinders > 16383) - continue; - *pheads = heads; - *psectors = sectors; - *pcylinders = cylinders; -#if 0 - printf("guessed geometry: LCHS=%d %d %d\n", - cylinders, heads, sectors); -#endif - return 0; - } - } - return -1; -} - -void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs) -{ - int translation, lba_detected = 0; - int cylinders, heads, secs; - uint64_t nb_sectors; - - /* if a geometry hint is available, use it */ - bdrv_get_geometry(bs, &nb_sectors); - bdrv_get_geometry_hint(bs, &cylinders, &heads, &secs); - translation = bdrv_get_translation_hint(bs); - if (cylinders != 0) { - *pcyls = cylinders; - *pheads = heads; - *psecs = secs; - } else { - if (guess_disk_lchs(bs, &cylinders, &heads, &secs) == 0) { - if (heads > 16) { - /* if heads > 16, it means that a BIOS LBA - translation was active, so the default - hardware geometry is OK */ - lba_detected = 1; - goto default_geometry; - } else { - *pcyls = cylinders; - *pheads = heads; - *psecs = secs; - /* disable any translation to be in sync with - the logical geometry */ - if (translation == BIOS_ATA_TRANSLATION_AUTO) { - bdrv_set_translation_hint(bs, - BIOS_ATA_TRANSLATION_NONE); - } - } - } else { - default_geometry: - /* if no geometry, use a standard physical disk geometry */ - cylinders = nb_sectors / (16 * 63); - - if (cylinders > 16383) - cylinders = 16383; - else if (cylinders < 2) - cylinders = 2; - *pcyls = cylinders; - *pheads = 16; - *psecs = 63; - if ((lba_detected == 1) && (translation == BIOS_ATA_TRANSLATION_AUTO)) { - if ((*pcyls * *pheads) <= 131072) { - bdrv_set_translation_hint(bs, - BIOS_ATA_TRANSLATION_LARGE); - } else { - bdrv_set_translation_hint(bs, - BIOS_ATA_TRANSLATION_LBA); - } - } - } - bdrv_set_geometry_hint(bs, *pcyls, *pheads, *psecs); - } -} - -void bdrv_set_geometry_hint(BlockDriverState *bs, - int cyls, int heads, int secs) -{ - bs->cyls = cyls; - bs->heads = heads; - bs->secs = secs; -} - -void bdrv_set_translation_hint(BlockDriverState *bs, int translation) -{ - bs->translation = translation; -} - -void bdrv_get_geometry_hint(BlockDriverState *bs, - int *pcyls, int *pheads, int *psecs) -{ - *pcyls = bs->cyls; - *pheads = bs->heads; - *psecs = bs->secs; -} - /* throttling disk io limits */ void bdrv_set_io_limits(BlockDriverState *bs, BlockIOLimit *io_limits) @@ -2282,112 +2134,6 @@ void bdrv_set_io_limits(BlockDriverState *bs, bs->io_limits_enabled = bdrv_io_limits_enabled(bs); } -/* Recognize floppy formats */ -typedef struct FDFormat { - FDriveType drive; - uint8_t last_sect; - uint8_t max_track; - uint8_t max_head; - FDriveRate rate; -} FDFormat; - -static const FDFormat fd_formats[] = { - /* First entry is default format */ - /* 1.44 MB 3"1/2 floppy disks */ - { FDRIVE_DRV_144, 18, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 20, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 21, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 21, 82, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 21, 83, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 22, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 23, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_144, 24, 80, 1, FDRIVE_RATE_500K, }, - /* 2.88 MB 3"1/2 floppy disks */ - { FDRIVE_DRV_288, 36, 80, 1, FDRIVE_RATE_1M, }, - { FDRIVE_DRV_288, 39, 80, 1, FDRIVE_RATE_1M, }, - { FDRIVE_DRV_288, 40, 80, 1, FDRIVE_RATE_1M, }, - { FDRIVE_DRV_288, 44, 80, 1, FDRIVE_RATE_1M, }, - { FDRIVE_DRV_288, 48, 80, 1, FDRIVE_RATE_1M, }, - /* 720 kB 3"1/2 floppy disks */ - { FDRIVE_DRV_144, 9, 80, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_144, 10, 80, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_144, 10, 82, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_144, 10, 83, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_144, 13, 80, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_144, 14, 80, 1, FDRIVE_RATE_250K, }, - /* 1.2 MB 5"1/4 floppy disks */ - { FDRIVE_DRV_120, 15, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_120, 18, 80, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_120, 18, 82, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_120, 18, 83, 1, FDRIVE_RATE_500K, }, - { FDRIVE_DRV_120, 20, 80, 1, FDRIVE_RATE_500K, }, - /* 720 kB 5"1/4 floppy disks */ - { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_250K, }, - /* 360 kB 5"1/4 floppy disks */ - { FDRIVE_DRV_120, 9, 40, 1, FDRIVE_RATE_300K, }, - { FDRIVE_DRV_120, 9, 40, 0, FDRIVE_RATE_300K, }, - { FDRIVE_DRV_120, 10, 41, 1, FDRIVE_RATE_300K, }, - { FDRIVE_DRV_120, 10, 42, 1, FDRIVE_RATE_300K, }, - /* 320 kB 5"1/4 floppy disks */ - { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_250K, }, - { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_250K, }, - /* 360 kB must match 5"1/4 better than 3"1/2... */ - { FDRIVE_DRV_144, 9, 80, 0, FDRIVE_RATE_250K, }, - /* end */ - { FDRIVE_DRV_NONE, -1, -1, 0, 0, }, -}; - -void bdrv_get_floppy_geometry_hint(BlockDriverState *bs, int *nb_heads, - int *max_track, int *last_sect, - FDriveType drive_in, FDriveType *drive, - FDriveRate *rate) -{ - const FDFormat *parse; - uint64_t nb_sectors, size; - int i, first_match, match; - - bdrv_get_geometry(bs, &nb_sectors); - match = -1; - first_match = -1; - for (i = 0; ; i++) { - parse = &fd_formats[i]; - if (parse->drive == FDRIVE_DRV_NONE) { - break; - } - if (drive_in == parse->drive || - drive_in == FDRIVE_DRV_NONE) { - size = (parse->max_head + 1) * parse->max_track * - parse->last_sect; - if (nb_sectors == size) { - match = i; - break; - } - if (first_match == -1) { - first_match = i; - } - } - } - if (match == -1) { - if (first_match == -1) { - match = 1; - } else { - match = first_match; - } - parse = &fd_formats[match]; - } - *nb_heads = parse->max_head + 1; - *max_track = parse->max_track; - *last_sect = parse->last_sect; - *drive = parse->drive; - *rate = parse->rate; -} - -int bdrv_get_translation_hint(BlockDriverState *bs) -{ - return bs->translation; -} - void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error, BlockErrorAction on_write_error) { |