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yaml
---
r: 102087
b: refs/heads/master
c: c9d6c1a
h: refs/heads/master
i:
  102085: f57fd76
  102083: 1b4da64
  102079: 10de535
v: v3
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Bartlomiej Zolnierkiewicz committed Jul 16, 2008
1 parent 879475d commit cfa4d76
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Showing 4 changed files with 24 additions and 25 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 8a97206e31dc2e2f8f9b4d97e234b5c701fe9894
refs/heads/master: c9d6c1a2379373219bb3271bdcbdc0ab2edf349d
23 changes: 0 additions & 23 deletions trunk/drivers/ide/ide-lib.c
Original file line number Diff line number Diff line change
Expand Up @@ -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
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22 changes: 22 additions & 0 deletions trunk/drivers/ide/ide-timings.c
Original file line number Diff line number Diff line change
@@ -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
Expand Down Expand Up @@ -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)

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2 changes: 1 addition & 1 deletion trunk/include/linux/ide.h
Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand All @@ -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];

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