diff options
author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-01-25 22:17:06 +0100 |
---|---|---|
committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-01-25 22:17:06 +0100 |
commit | 7a3b7512d0d7e78353e99f4538eb6d3354019d92 (patch) | |
tree | 678b3fee02297f3dea5df8182198ecd701e69649 /drivers | |
parent | 650d841d9e053a618dd8ce753422f91b493cf2f6 (diff) | |
download | op-kernel-dev-7a3b7512d0d7e78353e99f4538eb6d3354019d92.zip op-kernel-dev-7a3b7512d0d7e78353e99f4538eb6d3354019d92.tar.gz |
ide-disk: merge LBA28 and LBA48 Host Protected Area support code (take 2)
* Merge idedisk_{read_native,set}_max_address_ext() into
idedisk_{read_native,set}_max_address().
v2:
* Remove LBA48 code leftover from idedisk_read_native_max_address()
('high' variable initialization). (Noticed by Sergei).
There should be no functionality changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/ide/ide-disk.c | 103 |
1 files changed, 32 insertions, 71 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index a4c4d43..88c270f 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -307,16 +307,19 @@ static ide_startstop_t ide_do_rw_disk (ide_drive_t *drive, struct request *rq, s * Queries for true maximum capacity of the drive. * Returns maximum LBA address (> 0) of the drive, 0 if failed. */ -static unsigned long idedisk_read_native_max_address(ide_drive_t *drive) +static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) { ide_task_t args; struct ide_taskfile *tf = &args.tf; - unsigned long addr = 0; + u64 addr = 0; /* Create IDE/ATA command request structure */ memset(&args, 0, sizeof(ide_task_t)); + if (lba48) + tf->command = WIN_READ_NATIVE_MAX_EXT; + else + tf->command = WIN_READ_NATIVE_MAX; tf->device = ATA_LBA; - tf->command = WIN_READ_NATIVE_MAX; args.command_type = IDE_DRIVE_TASK_NO_DATA; args.handler = &task_no_data_intr; /* submit command request */ @@ -324,33 +327,13 @@ static unsigned long idedisk_read_native_max_address(ide_drive_t *drive) /* if OK, compute maximum address value */ if ((tf->status & 0x01) == 0) { - addr = ((tf->device & 0xf) << 24) | - (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; - addr++; /* since the return value is (maxlba - 1), we add 1 */ - } - return addr; -} - -static unsigned long long idedisk_read_native_max_address_ext(ide_drive_t *drive) -{ - ide_task_t args; - struct ide_taskfile *tf = &args.tf; - unsigned long long addr = 0; - - /* Create IDE/ATA command request structure */ - memset(&args, 0, sizeof(ide_task_t)); - tf->device = ATA_LBA; - tf->command = WIN_READ_NATIVE_MAX_EXT; - args.command_type = IDE_DRIVE_TASK_NO_DATA; - args.handler = &task_no_data_intr; - /* submit command request */ - ide_raw_taskfile(drive, &args, NULL); - - /* if OK, compute maximum address value */ - if ((tf->status & 0x01) == 0) { u32 high, low; - high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | tf->hob_lbal; + if (lba48) + high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | + tf->hob_lbal; + else + high = tf->device & 0xf; low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; addr = ((__u64)high << 24) | low; addr++; /* since the return value is (maxlba - 1), we add 1 */ @@ -362,38 +345,11 @@ static unsigned long long idedisk_read_native_max_address_ext(ide_drive_t *drive * Sets maximum virtual LBA address of the drive. * Returns new maximum virtual LBA address (> 0) or 0 on failure. */ -static unsigned long idedisk_set_max_address(ide_drive_t *drive, unsigned long addr_req) +static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) { ide_task_t args; struct ide_taskfile *tf = &args.tf; - unsigned long addr_set = 0; - - addr_req--; - /* Create IDE/ATA command request structure */ - memset(&args, 0, sizeof(ide_task_t)); - tf->lbal = (addr_req >> 0) & 0xff; - tf->lbam = (addr_req >> 8) & 0xff; - tf->lbah = (addr_req >> 16) & 0xff; - tf->device = ((addr_req >> 24) & 0x0f) | ATA_LBA; - tf->command = WIN_SET_MAX; - args.command_type = IDE_DRIVE_TASK_NO_DATA; - args.handler = &task_no_data_intr; - /* submit command request */ - ide_raw_taskfile(drive, &args, NULL); - /* if OK, read new maximum address value */ - if ((tf->status & 0x01) == 0) { - addr_set = ((tf->device & 0xf) << 24) | - (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; - addr_set++; - } - return addr_set; -} - -static unsigned long long idedisk_set_max_address_ext(ide_drive_t *drive, unsigned long long addr_req) -{ - ide_task_t args; - struct ide_taskfile *tf = &args.tf; - unsigned long long addr_set = 0; + u64 addr_set = 0; addr_req--; /* Create IDE/ATA command request structure */ @@ -401,11 +357,16 @@ static unsigned long long idedisk_set_max_address_ext(ide_drive_t *drive, unsign tf->lbal = (addr_req >> 0) & 0xff; tf->lbam = (addr_req >>= 8) & 0xff; tf->lbah = (addr_req >>= 8) & 0xff; - tf->device = ATA_LBA; - tf->command = WIN_SET_MAX_EXT; - tf->hob_lbal = (addr_req >>= 8) & 0xff; - tf->hob_lbam = (addr_req >>= 8) & 0xff; - tf->hob_lbah = (addr_req >>= 8) & 0xff; + if (lba48) { + tf->hob_lbal = (addr_req >>= 8) & 0xff; + tf->hob_lbam = (addr_req >>= 8) & 0xff; + tf->hob_lbah = (addr_req >>= 8) & 0xff; + tf->command = WIN_SET_MAX_EXT; + } else { + tf->device = (addr_req >>= 8) & 0x0f; + tf->command = WIN_SET_MAX; + } + tf->device |= ATA_LBA; args.command_type = IDE_DRIVE_TASK_NO_DATA; args.handler = &task_no_data_intr; /* submit command request */ @@ -414,7 +375,11 @@ static unsigned long long idedisk_set_max_address_ext(ide_drive_t *drive, unsign if ((tf->status & 0x01) == 0) { u32 high, low; - high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | tf->hob_lbal; + if (lba48) + high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | + tf->hob_lbal; + else + high = tf->device & 0xf; low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; addr_set = ((__u64)high << 24) | low; addr_set++; @@ -464,10 +429,8 @@ static void idedisk_check_hpa(ide_drive_t *drive) int lba48 = idedisk_supports_lba48(drive->id); capacity = drive->capacity64; - if (lba48) - set_max = idedisk_read_native_max_address_ext(drive); - else - set_max = idedisk_read_native_max_address(drive); + + set_max = idedisk_read_native_max_address(drive, lba48); if (ide_in_drive_list(drive->id, hpa_list)) { /* @@ -488,10 +451,8 @@ static void idedisk_check_hpa(ide_drive_t *drive) capacity, sectors_to_MB(capacity), set_max, sectors_to_MB(set_max)); - if (lba48) - set_max = idedisk_set_max_address_ext(drive, set_max); - else - set_max = idedisk_set_max_address(drive, set_max); + set_max = idedisk_set_max_address(drive, set_max, lba48); + if (set_max) { drive->capacity64 = set_max; printk(KERN_INFO "%s: Host Protected Area disabled.\n", |