176e4961bb
CHS-based disk utilities and operating systems may adjust the logical geometry of a hard drive to cope with the expectations or limitations of software using the ATA INITIALIZE_DEVICE_PARAMETERS command. Prior to this patch, INITIALIZE_DEVICE_PARAMETERS was a nop that always returned success, raising the possibility of data loss or corruption if the CHS<->LBA translation redirected a write to the wrong sector. * hw/ide/core.c ide_reset(): Reset the logical CHS geometry of the hard disk when the power-on defaults feature is enabled. cmd_specify(): a) New function implementing INITIALIZE_DEVICE_PARAMETERS. b) Ignore calls for empty or ATAPI devices. cmd_set_features(): Implement the power-on defaults enable and disable features. struct ide_cmd_table: Switch WIN_SPECIFY from cmd_nop() to cmd_specify(). ide_init_drive(): Set new fields 'drive_heads' and 'drive_sectors' based upon the actual disk geometry. * include/hw/ide/internal.h struct IDEState: a) Store the actual drive CHS values within the new fields 'drive_heads' and 'drive_sectors.' b) Track whether a soft IDE reset should also reset the logical CHS geometry of the hard disk within the new field 'reset_reverts'. Signed-off-by: Lev Kujawski <lkujaw@member.fsf.org> Message-Id: <20220707031140.158958-7-lkujaw@member.fsf.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com> |
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| .. | ||
| ahci.h | ||
| internal.h | ||
| pci.h | ||