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ide: use try_to_identify() in ide_driveid_update()

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* Pass pointer to buffer for IDENTIFY data to do_identify()
  and try_to_identify().

* Un-static try_to_identify() and use it in ide_driveid_update().

* Rename try_to_identify() to ide_dev_read_id().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-03-24 23:22:59 +01:00
parent ff18b89bef
commit 2ebe1d9efe
3 changed files with 19 additions and 63 deletions
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56
drivers/ide/ide-iops.c
View File

@ -289,66 +289,20 @@ u8 eighty_ninty_three(ide_drive_t *drive)
int ide_driveid_update(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
u16 *id;
unsigned long flags;
int use_altstatus = 0, rc;
u8 a, uninitialized_var(s);
int rc;
id = kmalloc(SECTOR_SIZE, GFP_ATOMIC);
if (id == NULL)
return 0;
/*
* Re-read drive->id for possible DMA mode
* change (copied from ide-probe.c)
*/
SELECT_MASK(drive, 1);
tp_ops->set_irq(hwif, 0);
msleep(50);
if (hwif->io_ports.ctl_addr &&
(hwif->host_flags & IDE_HFLAG_BROKEN_ALTSTATUS) == 0) {
a = tp_ops->read_altstatus(hwif);
s = tp_ops->read_status(hwif);
if ((a ^ s) & ~ATA_IDX)
/* ancient Seagate drives, broken interfaces */
printk(KERN_INFO "%s: probing with STATUS(0x%02x) "
"instead of ALTSTATUS(0x%02x)\n",
drive->name, s, a);
else
/* use non-intrusive polling */
use_altstatus = 1;
}
tp_ops->exec_command(hwif, ATA_CMD_ID_ATA);
if (ide_busy_sleep(hwif, WAIT_WORSTCASE / 2, use_altstatus)) {
rc = 1;
goto out_err;
}
msleep(50); /* wait for IRQ and ATA_DRQ */
s = tp_ops->read_status(hwif);
if (!OK_STAT(s, ATA_DRQ, BAD_R_STAT)) {
rc = 2;
goto out_err;
}
local_irq_save(flags);
tp_ops->input_data(drive, NULL, id, SECTOR_SIZE);
local_irq_restore(flags);
(void)tp_ops->read_status(hwif); /* clear drive IRQ */
ide_fix_driveid(id);
rc = ide_dev_read_id(drive, ATA_CMD_ID_ATA, id);
SELECT_MASK(drive, 0);
if (rc)
goto out_err;
drive->id[ATA_ID_UDMA_MODES] = id[ATA_ID_UDMA_MODES];
drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES];
drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES];

24
drivers/ide/ide-probe.c
View File

@ -181,16 +181,16 @@ static void ide_classify_atapi_dev(ide_drive_t *drive)
* do_identify - identify a drive
* @drive: drive to identify
* @cmd: command used
* @id: buffer for IDENTIFY data
*
* Called when we have issued a drive identify command to
* read and parse the results. This function is run with
* interrupts disabled.
*/
static void do_identify(ide_drive_t *drive, u8 cmd)
static void do_identify(ide_drive_t *drive, u8 cmd, u16 *id)
{
ide_hwif_t *hwif = drive->hwif;
u16 *id = drive->id;
char *m = (char *)&id[ATA_ID_PROD];
unsigned long flags;
int bswap = 1;
@ -240,19 +240,19 @@ static void do_identify(ide_drive_t *drive, u8 cmd)
}
/**
* try_to_identify - send ATA/ATAPI identify
* ide_dev_read_id - send ATA/ATAPI IDENTIFY command
* @drive: drive to identify
* @cmd: command to use
* @id: buffer for IDENTIFY data
*
* try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
* and waits for a response.
* Sends an ATA(PI) IDENTIFY request to a drive and waits for a response.
*
* Returns: 0 device was identified
* 1 device timed-out (no response to identify request)
* 2 device aborted the command (refused to identify itself)
*/
static int try_to_identify(ide_drive_t *drive, u8 cmd)
int ide_dev_read_id(ide_drive_t *drive, u8 cmd, u16 *id)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
@ -312,7 +312,7 @@ static int try_to_identify(ide_drive_t *drive, u8 cmd)
if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) {
/* drive returned ID */
do_identify(drive, cmd);
do_identify(drive, cmd, id);
/* drive responded with ID */
rc = 0;
/* clear drive IRQ */
@ -378,6 +378,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
{
ide_hwif_t *hwif = drive->hwif;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
u16 *id = drive->id;
int rc;
u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat;
@ -413,11 +414,10 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
if (OK_STAT(stat, ATA_DRDY, ATA_BUSY) ||
present || cmd == ATA_CMD_ID_ATAPI) {
/* send cmd and wait */
if ((rc = try_to_identify(drive, cmd))) {
rc = ide_dev_read_id(drive, cmd, id);
if (rc)
/* failed: try again */
rc = try_to_identify(drive,cmd);
}
rc = ide_dev_read_id(drive, cmd, id);
stat = tp_ops->read_status(hwif);
@ -432,7 +432,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
msleep(50);
tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
(void)ide_busy_sleep(hwif, WAIT_WORSTCASE, 0);
rc = try_to_identify(drive, cmd);
rc = ide_dev_read_id(drive, cmd, id);
}
/* ensure drive IRQ is clear */

2
include/linux/ide.h
View File

@ -1235,6 +1235,8 @@ int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
int ide_dev_read_id(ide_drive_t *, u8, u16 *);
extern int ide_driveid_update(ide_drive_t *);
extern int ide_config_drive_speed(ide_drive_t *, u8);
extern u8 eighty_ninty_three (ide_drive_t *);