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ide: add support for CFA specified transfer modes (take 3)

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Add support for the CompactFlash specific PIO modes 5/6 and MWDMA modes 3/4.

Since there were no PIO5 capable hard drives produced and one would also need
66 MHz IDE clock to actually get the difference WRT the address setup timings
programmed, I decided to simply replace the old non-standard PIO mode 5 timings
with the CFA specified ones.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stf_xl@wp.pl
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Sergei Shtylyov
2009-03-31 20:15:28 +02:00
committed by Bartlomiej Zolnierkiewicz
parent c4199930b1
commit 74638c8482
5 changed files with 40 additions and 10 deletions
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3
drivers/ide/sl82c105.c
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@@ -61,7 +61,8 @@ static unsigned int get_pio_timings(ide_drive_t *drive, u8 pio)
if (cmd_off == 0)
cmd_off = 1;
if (pio > 2 || ata_id_has_iordy(drive->id))
if ((pio > 2 || ata_id_has_iordy(drive->id)) &&
!(pio > 4 && ata_id_is_cfa(drive->id)))
iordy = 0x40;
return (cmd_on - 1) << 8 | (cmd_off - 1) | iordy;