ide: move ide_pio_cycle_time() to ide-timings.c
All ide_pio_cycle_time() users already select CONFIG_IDE_TIMINGS so move the function from ide-lib.c to ide-timings.c. While at it: - convert ide_pio_cycle_time() to use ide_timing_find_mode() - cleanup ide_pio_cycle_time() a bit There should be no functional changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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@ -188,29 +188,6 @@ static int ide_scan_pio_blacklist (char *model)
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return -1;
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}
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unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
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{
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struct hd_driveid *id = drive->id;
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int cycle_time = 0;
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if (id->field_valid & 2) {
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if (id->capability & 8)
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cycle_time = id->eide_pio_iordy;
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else
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cycle_time = id->eide_pio;
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}
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/* conservative "downgrade" for all pre-ATA2 drives */
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if (pio < 3) {
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if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time)
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cycle_time = 0; /* use standard timing */
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}
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return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time;
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}
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EXPORT_SYMBOL_GPL(ide_pio_cycle_time);
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/**
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* ide_get_best_pio_mode - get PIO mode from drive
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* @drive: drive to consider
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@ -1,5 +1,6 @@
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/*
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* Copyright (c) 1999-2001 Vojtech Pavlik
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* Copyright (c) 2007-2008 Bartlomiej Zolnierkiewicz
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -75,6 +76,27 @@ struct ide_timing *ide_timing_find_mode(u8 speed)
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}
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EXPORT_SYMBOL_GPL(ide_timing_find_mode);
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u16 ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
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{
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struct hd_driveid *id = drive->id;
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struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
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u16 cycle = 0;
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if (id->field_valid & 2) {
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if (id->capability & 8)
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cycle = id->eide_pio_iordy;
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else
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cycle = id->eide_pio;
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/* conservative "downgrade" for all pre-ATA2 drives */
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if (pio < 3 && cycle < t->cycle)
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cycle = 0; /* use standard timing */
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}
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return cycle ? cycle : t->cycle;
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}
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EXPORT_SYMBOL_GPL(ide_pio_cycle_time);
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#define ENOUGH(v, unit) (((v) - 1) / (unit) + 1)
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#define EZ(v, unit) ((v) ? ENOUGH(v, unit) : 0)
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@ -1300,6 +1300,7 @@ enum {
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};
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struct ide_timing *ide_timing_find_mode(u8);
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u16 ide_pio_cycle_time(ide_drive_t *, u8);
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void ide_timing_merge(struct ide_timing *, struct ide_timing *,
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struct ide_timing *, unsigned int);
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int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
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@ -1311,7 +1312,6 @@ typedef struct ide_pio_timings_s {
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/* active + recovery (+ setup for some chips) */
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} ide_pio_timings_t;
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unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
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u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
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extern const ide_pio_timings_t ide_pio_timings[6];
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