* add ide_set_dma() helper and make ide_hwif_t.ide_dma_check return
-1 when DMA needs to be disabled (== need to call ->ide_dma_off_quietly)
0 when DMA needs to be enabled (== need to call ->ide_dma_on)
1 when DMA setting shouldn't be changed
* fix IDE code to use ide_set_dma() instead if using ->ide_dma_check directly
v2:
* updated for scc_pata
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* add ide_use_fast_pio() helper for use by host drivers
* add DMA capability and hwif->autodma checks to ide_use_dma()
- au1xxx-ide/it8213/it821x drivers didn't check for (id->capability & 1)
[ for the IT8211/2 in SMART mode this check shouldn't be made but since
in it821x_fixups() we set DMA bit explicitly:
if(strstr(id->model, "Integrated Technology Express")) {
/* In raid mode the ident block is slightly buggy
We need to set the bits so that the IDE layer knows
LBA28. LBA48 and DMA ar valid */
id->capability |= 3; /* LBA28, DMA */
we are better off using generic helper if we can ]
- ide-cris driver didn't set ->autodma
[ before the patch hwif->autodma was only checked in the chipset specific
hwif->ide_dma_check implementations, for ide-cris it is cris_dma_check()
function so there no behavior change here ]
v2:
* updated patch description (thanks to Alan Cox for the feedback)
v3:
* updated for scc_pata driver
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* atiixp: if DMA can't be used atiixp_config_drive_for_dma() should return 0,
atiixp_dma_check() will tune the correct PIO mode anyway
* jmicron: if DMA can't be used config_chipset_for_dma() should return 0,
micron_config_drive_for_dma() will tune the correct PIO mode anyway
config_jmicron_chipset_for_pio(drive, !speed) doesn't program
device transfer mode for speed != 0 (only wastes some CPU cycles
on ide_get_best_pio_mode() call) so remove it
* triflex: if DMA can't be used triflex_config_drive_for_dma() should return 0,
triflex_config_drive_xfer_rate() will tune correct PIO mode anyway
Above changes also fix (theoretical) issue when ->speedproc fails to set
device transfer mode (i.e. when ide_config_drive_speed() fails to program it)
but one of DMA transfer modes is already enabled on the device by the BIOS.
In such scenario ide_dma_enable() will incorrectly return true statement
and ->ide_dma_check will try to enable DMA on the device.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
IDE HDD does not work if it uses a 40-pin PATA cable on ATI chipset.
This patch fixes the bug.
Signed-off-by: Conke Hu <conke.hu@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
AMD/ATI SB600 IDE/PATA controller only has one channel.
Signed-off-by: Conke Hu <conke.hu@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
A previous patch to atiixp.c was removed but some code has not been
cleaned. Now we remove these code sine they are no use any longer.
Signed-off-by: Conke Hu <conke.hu@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
When the old IDE layer calls into methods in the driver during error
handling it is essentially random whether ide_lock is already held. This
causes a deadlock in the atiixp driver which also uses ide_lock internally
for locking.
Switch to a private lock instead.
[akpm@osl.org: cleanup]
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Support SB600 SATA legacy IDE (DMA enable).
Signed-off-by: Anatoli Antonovitch <antonovi@ati.com>
Cc: Jeff Garzik <jeff@garzik.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add support for the IDE device on ATI SB600
Signed-off-by: Felix Kuehling <fkuehlin@ati.com>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Bartlomiej Zolnierkiewicz