Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7a3b7512d0d7e78353e99f4538eb6d3354019d92
Commit: 7a3b7512d0d7e78353e99f4538eb6d3354019d92
Parent: 650d841d9e053a618dd8ce753422f91b493cf2f6
Author: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
AuthorDate: Fri Jan 25 22:17:06 2008 +0100
Committer: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
CommitDate: Fri Jan 25 22:17:06 2008 +0100
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 <[EMAIL PROTECTED]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
---
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",
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
