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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-07-20 01:11:55 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-07-20 01:11:55 +0200 |
| commit | 2229833c1365346b64357a9263fa724f74f5e376 (patch) | |
| tree | 50f06ee86c940ef415561e548dabaaafd81a49a3 /drivers/ide | |
| parent | 342cdb6d4739cee430efc3eafcacd1605db66036 (diff) | |
| download | talos-obmc-linux-2229833c1365346b64357a9263fa724f74f5e376.tar.gz talos-obmc-linux-2229833c1365346b64357a9263fa724f74f5e376.zip | |
ide: add ide_dev_has_iordy() helper (take 4)
* Add ide_dev_has_iordy() helper and use it sl82c105 host driver.
* Remove no longer needed ide_pio_data_t.use_iordy field.
v2/v3:
* Fix issues noticed by Sergei:
- correct patch description
- fix comment in ide_get_best_pio_mode()
v4:
* Fix "ata_" prefix (Noticed by Jeff).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-lib.c | 7 | ||||
| -rw-r--r-- | drivers/ide/pci/sl82c105.c | 10 |
2 files changed, 8 insertions, 9 deletions
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index d45bbad9ffe7..d5cc96bb4298 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -267,18 +267,15 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_p { int pio_mode; int cycle_time = 0; - int use_iordy = 0; struct hd_driveid* id = drive->id; int overridden = 0; if (mode_wanted != 255) { pio_mode = mode_wanted; - use_iordy = (pio_mode > 2); } else if (!drive->id) { pio_mode = 0; } else if ((pio_mode = ide_scan_pio_blacklist(id->model)) != -1) { printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name); - use_iordy = (pio_mode > 2); } else { pio_mode = id->tPIO; if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */ @@ -286,8 +283,7 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_p overridden = 1; } if (id->field_valid & 2) { /* drive implements ATA2? */ - if (id->capability & 8) { /* drive supports use_iordy? */ - use_iordy = 1; + if (id->capability & 8) { /* IORDY supported? */ cycle_time = id->eide_pio_iordy; if (id->eide_pio_modes & 7) { overridden = 0; @@ -325,7 +321,6 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_p if (d) { d->pio_mode = pio_mode; d->cycle_time = cycle_time ? cycle_time : ide_pio_timings[pio_mode].cycle_time; - d->use_iordy = use_iordy; } return pio_mode; } diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c index a7323d278c49..f2156ee7e2bd 100644 --- a/drivers/ide/pci/sl82c105.c +++ b/drivers/ide/pci/sl82c105.c @@ -52,9 +52,10 @@ * Convert a PIO mode and cycle time to the required on/off times * for the interface. This has protection against runaway timings. */ -static unsigned int get_pio_timings(ide_pio_data_t *p) +static unsigned int get_pio_timings(ide_drive_t *drive, ide_pio_data_t *p) { unsigned int cmd_on, cmd_off; + u8 iordy = 0; cmd_on = (ide_pio_timings[p->pio_mode].active_time + 29) / 30; cmd_off = (p->cycle_time - 30 * cmd_on + 29) / 30; @@ -65,7 +66,10 @@ static unsigned int get_pio_timings(ide_pio_data_t *p) if (cmd_off == 0) cmd_off = 1; - return (cmd_on - 1) << 8 | (cmd_off - 1) | (p->use_iordy ? 0x40 : 0x00); + if (p->pio_mode > 2 || ide_dev_has_iordy(drive->id)) + iordy = 0x40; + + return (cmd_on - 1) << 8 | (cmd_off - 1) | iordy; } /* @@ -82,7 +86,7 @@ static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio) pio = ide_get_best_pio_mode(drive, pio, 5, &p); - drv_ctrl = get_pio_timings(&p); + drv_ctrl = get_pio_timings(drive, &p); /* * Store the PIO timings so that we can restore them |
