motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-29 05:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

fdc: Move floppy geometry guessing back from block.c

Browse source 
Commit 5bbdbb46 moved it to block.c because "other geometry guessing
functions already reside in block.c".  Device-specific functionality
should be kept in device code, not the block layer.  Move it back.

Disk geometry guessing is still in block.c.  To be moved out in a
later patch series.

Bonus: the floppy type used in pc_cmos_init() now obviously matches
the one in the FDrive.  Before, we relied on
bdrv_get_floppy_geometry_hint() picking the same type both in
fd_revalidate() and in pc_cmos_init().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2012-07-10 11:12:27 +02:00 • committed by Kevin Wolf
parent 19db9b9042
commit 61a8d649ff
5 changed files with 123 additions and 139 deletions
Download patch file Download diff file Expand all files Collapse all files

101
block.c
View file

@ -2282,107 +2282,6 @@ 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;