* disk/ata.c (enum grub_ata_commands): Remove EXEC_DEV_DIAGNOSTICS.
(enum grub_ata_timeout_milliseconds): New enum.
(grub_ata_wait_status): Add parameter milliseconds.
(grub_ata_cmd): Remove variable `err'. Remove wait for !DRQ to allow
recovery from timed-out commands.
(grub_ata_pio_read): Add parameter milliseconds. Fix error return,
return grub_errno instead of REG_ERROR.
(grub_ata_pio_write): Add parameter milliseconds.
(grub_atapi_identify): Fix size of ATAPI IDENTIFY sector.
Pass milliseconds to grub_ata_wait_status () and
grub_ata_pio_read ().
(grub_atapi_packet): Pass milliseconds to grub_ata_pio_write ().
(grub_ata_identify): Remove variable `ataerr'. Pass milliseconds to
grub_ata_wait_status (). Fix IDENTIFY timeout check.
(grub_ata_device_initialize): Remove EXECUTE DEVICE DIAGNOSTICS.
It is not suitable for device detection, because DEV bit is ignored,
the command may run too long, and not all devices set the signature
properly.
(grub_ata_pciinit): Clear grub_errno before grub_ata_device_initialize ().
(grub_ata_setaddress): Pass milliseconds to grub_ata_wait_status ().
Fix device selection, DEV bit must be set first to address the registers
of the correct device.
(grub_ata_readwrite): Pass milliseconds to grub_ata_wait_status () and
grub_ata_pio_read/write ().
(grub_atapi_read): Pass milliseconds to grub_ata_pio_read ().
(grub_atapi_write): Pass milliseconds to grub_ata_pio_write ().
* disk/ata.c (grub_apapi_open): Initialize devfnd, no need to set
scsi->name and scsi->luns, as they will be set in grub_scsi_open.
* disk/scsi.c (grub_scsi_open): Don't call p->close (scsi) here when
error occurs, as grub_disk_open will call grub_disk_close, which will
call p->close (scsi).
* disk/ata.c (grub_ata_regget): Change return type to
`grub_uint8_t'.
(grub_ata_regget2): Likewise.
(grub_ata_wait_status): New function.
(grub_ata_wait_busy): Removed function, updated all users to use
`grub_ata_wait_status'.
(grub_ata_wait_drq): Likewise.
(grub_ata_cmd): New function.
(grub_ata_pio_read): Change return type to `grub_uint8_t'. Add
error handling.
(grub_ata_pio_write): Add error handling.
(grub_atapi_identify): Likewise.
(grub_atapi_packet): Use `grub_ata_cmd' and improve error
handling.
(grub_ata_identify): Use `grub_ata_cmd' and improve error
handling. Actually use the detected registers. Reorder the
detection logic such that it is easier to read.
(grub_ata_pciinit): Do not assign the same ID to each controller.
(grub_ata_setaddress): Use `grub_ata_cmd' and improve error
handling.
(grub_atapi_readsector): Check the result of `grub_ata_pio_read'.
* include/grub/err.h (grub_err_t): Add `GRUB_ERR_TIMEOUT'.
* disk/ata.c (grub_ata_pio_write): Check status before writing,
like we do in grub_ata_pio_read().
(grub_ata_readwrite): Always write individual sectors. Fix the
sector count for the remainder.
(grub_ata_write): Enable writing to ATA devices. Correctly
report error for ATAPI devices.
* disk/ata.c (grub_ata_readwrite): Don't increment sector number
for every read sector, we already increment it for the whole
batch. This fixes reading more than 256 sectors at once.
* disk/ata.c (grub_ata_open): Don't lose precision in disk->id.
* disk/host.c (grub_host_open): Likewise.
* disk/loopback.c (grub_loopback_open): Likewise.
* disk/memdisk.c (grub_memdisk_open): Use a string pointer for
disk->id as in disk/host.c, not a multi-character constant.
Remove 2 TiB limit in ata.mod.
* disk/ata.c (grub_ata_device): Promote `size' to grub_uint64_t.
(grub_ata_dumpinfo): Print sector count with 0x%llx.
(grub_ata_identify): Interpret `&info16[100]' as a pointer to
grub_uint64_t instead of grub_uint32_t.
* kern/disk.c (grub_disk_firmware_fini)
(grub_disk_firmware_is_tainted): New variables.
* include/grub/disk.h (grub_disk_firmware_fini)
(grub_disk_firmware_is_tainted): Likewise.
* disk/i386/pc/biosdisk.c (GRUB_MOD_FINI(biosdisk)): Moved from here ...
(grub_disk_biosdisk_fini): ... to here.
(GRUB_MOD_FINI(biosdisk)): Implement using grub_disk_biosdisk_fini().
(GRUB_MOD_INIT(biosdisk)): Abort when `grub_disk_firmware_is_tainted'
is set. Register grub_disk_biosdisk_fini() in
`grub_disk_firmware_fini'.
* disk/ata.c: Remove `<grub/machine/biosdisk.h>'.
(GRUB_MOD_INIT(ata)): Remove grub_biosdisk_fini() call.
Use `grub_disk_firmware_is_tainted' and `grub_disk_firmware_fini'
to finish existing firmware disk interface.
* conf/i386-linuxbios.rmk (pkgdata_MODULES): Add `ata.mod'.
(ata_mod_SOURCES): New variable.
(ata_mod_CFLAGS): Likewise.
(ata_mod_LDFLAGS): Likewise.
* disk/ata.c (grub_ata_pio_read): Don't wait for the command to
become activate.
(grub_ata_pio_write): Likewise.
(grub_atapi_identify): Wait after issuing an ATA command.
(grub_atapi_packet): Likewise.
(grub_ata_identify): Likewise.
(grub_ata_readwrite): Likewise.
* disk/ata.c (grub_ata_pio_read): Detect and return the error code.
(grub_ata_pio_write): Likewise.
(grub_ata_readwrite): Use `grub_error', instead of
returning `grub_errno'.
