diff options
| -rw-r--r-- | drivers/ide/ide-lib.c | 23 | ||||
| -rw-r--r-- | drivers/ide/ide-timings.c | 22 | ||||
| -rw-r--r-- | include/linux/ide.h | 2 |
3 files changed, 23 insertions, 24 deletions
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index 7e053d21773..efa5bfa64d0 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -188,29 +188,6 @@ static int ide_scan_pio_blacklist (char *model) return -1; } -unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio) -{ - struct hd_driveid *id = drive->id; - int cycle_time = 0; - - if (id->field_valid & 2) { - if (id->capability & 8) - cycle_time = id->eide_pio_iordy; - else - cycle_time = id->eide_pio; - } - - /* conservative "downgrade" for all pre-ATA2 drives */ - if (pio < 3) { - if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time) - cycle_time = 0; /* use standard timing */ - } - - return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time; -} - -EXPORT_SYMBOL_GPL(ide_pio_cycle_time); - /** * ide_get_best_pio_mode - get PIO mode from drive * @drive: drive to consider diff --git a/drivers/ide/ide-timings.c b/drivers/ide/ide-timings.c index ebef6d4e3f6..8c2f8327f48 100644 --- a/drivers/ide/ide-timings.c +++ b/drivers/ide/ide-timings.c @@ -1,5 +1,6 @@ /* * Copyright (c) 1999-2001 Vojtech Pavlik + * Copyright (c) 2007-2008 Bartlomiej Zolnierkiewicz * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -75,6 +76,27 @@ struct ide_timing *ide_timing_find_mode(u8 speed) } EXPORT_SYMBOL_GPL(ide_timing_find_mode); +u16 ide_pio_cycle_time(ide_drive_t *drive, u8 pio) +{ + struct hd_driveid *id = drive->id; + struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio); + u16 cycle = 0; + + if (id->field_valid & 2) { + if (id->capability & 8) + cycle = id->eide_pio_iordy; + else + cycle = id->eide_pio; + + /* conservative "downgrade" for all pre-ATA2 drives */ + if (pio < 3 && cycle < t->cycle) + cycle = 0; /* use standard timing */ + } + + return cycle ? cycle : t->cycle; +} +EXPORT_SYMBOL_GPL(ide_pio_cycle_time); + #define ENOUGH(v, unit) (((v) - 1) / (unit) + 1) #define EZ(v, unit) ((v) ? ENOUGH(v, unit) : 0) diff --git a/include/linux/ide.h b/include/linux/ide.h index 057001f6b1d..3899c761b30 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -1300,6 +1300,7 @@ enum { }; struct ide_timing *ide_timing_find_mode(u8); +u16 ide_pio_cycle_time(ide_drive_t *, u8); void ide_timing_merge(struct ide_timing *, struct ide_timing *, struct ide_timing *, unsigned int); int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); @@ -1311,7 +1312,6 @@ typedef struct ide_pio_timings_s { /* active + recovery (+ setup for some chips) */ } ide_pio_timings_t; -unsigned int ide_pio_cycle_time(ide_drive_t *, u8); u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8); extern const ide_pio_timings_t ide_pio_timings[6]; |