dma problems with via82cxxx after suspend

dma problems with via82cxxx after suspend

[David Meier]

I get DMA errors after resuming from suspend (S3).

I had switched DMA off before suspending.

Kernel: 2.6.10 (ubuntu, 2.6.10-27), same with 2.6.8.1. Boot Parameters:
ro nobiospnp noapic pci=usepirqmask; same problem without those.

Hardware: Asus K8V SE Deluxe, Via K8T800 Chipset, via82cxxx loaded or
compiled in. No errors with a kernel without that module.


This is the last dmesg:

hda: DMA disabled
hdb: DMA disabled
hdc: DMA disabled
hdd: DMA disabled
Stopping tasks: ==============================================|
Back to C!
powernow-k8: ph2 null fid transition 0xc
ACPI: PCI interrupt 0000:00:07.0[A] -> GSI 11 (level, low) -> IRQ 11
ACPI: PCI interrupt 0000:00:0a.0[A] -> GSI 10 (level, low) -> IRQ 10
eth1: link down
ACPI: PCI interrupt 0000:00:0f.0[B] -> GSI 10 (level, low) -> IRQ 10
ACPI: PCI interrupt 0000:00:0f.1[A] -> GSI 11 (level, low) -> IRQ 11
Restarting tasks... done
usb 5-4: USB disconnect, address 3
VFS: busy inodes on changed media.
input: AT Translated Set 2 keyboard on isa0060/serio0
usb 5-4: new high speed USB device using ehci_hcd and address 4
scsi3 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 4
usb-storage: waiting for device to settle before scanning
  Vendor: HL-DT-ST  Model: DVDRAM GSA-4163B  Rev: A101
  Type:   CD-ROM                             ANSI SCSI revision: 00
sr0: scsi3-mmc drive: 40x/40x writer dvd-ram cd/rw xa/form2 cdda tray
Attached scsi CD-ROM sr0 at scsi3, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi3, channel 0, id 0, lun 0,  type 5
usb-storage: device scan complete
hda: dma_timer_expiry: dma status == 0x61
hda: DMA timeout error
hda: dma timeout error: status=0x58 { DriveReady SeekComplete
DataRequest }

ide: failed opcode was: unknown
hda: status timeout: status=0xd0 { Busy }

ide: failed opcode was: unknown
hdb: DMA disabled
hda: drive not ready for command
ide0: reset: success
hda: dma_timer_expiry: dma status == 0x21
hda: DMA timeout error
hda: dma timeout error: status=0x58 { DriveReady SeekComplete
DataRequest }

ide: failed opcode was: unknown
hda: status timeout: status=0xd0 { Busy }

ide: failed opcode was: unknown
hda: drive not ready for command
ide0: reset: success
hda: dma_timer_expiry: dma status == 0x21
hda: DMA timeout error
hda: dma timeout error: status=0x58 { DriveReady SeekComplete
DataRequest }

ide: failed opcode was: unknown
hda: status timeout: status=0xd0 { Busy }

ide: failed opcode was: unknown
hda: drive not ready for command
ide0: reset: success
hda: dma_timer_expiry: dma status == 0x21
hda: DMA timeout error
hda: dma timeout error: status=0x58 { DriveReady SeekComplete
DataRequest }

ide: failed opcode was: unknown
hda: status timeout: status=0xd0 { Busy }

ide: failed opcode was: unknown
hda: drive not ready for command
ide0: reset: success


Thanks
David

Re: dma problems with via82cxxx after suspend

[Bartlomiej Zolnierkiewicz]

[-- Attachment #1: Type: text/plain, Size: 299 bytes --]

On Mon, 14 Mar 2005 18:54:10 +0100, David Meier <droebbel.melta@gmx.de> wrote:
> I get DMA errors after resuming from suspend (S3).
> 
> I had switched DMA off before suspending.

...

This should be fixed in ide-dev-2.6 tree and in -mm series.
Alternatively you can try attached patch.

Bartlomiej

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: via.patch --]
[-- Type: text/x-patch; name="via.patch", Size: 1214 bytes --]

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2005/02/03 21:47:18+01:00 bzolnier@trik.(none) 
#   [ide] fix via82cxxx resume failure
#   
#   With David Woodhouse <dwmw2@infradead.org>.
#   
#   On resume from sleep, via_set_speed() doesn't reinstate the correct
#   mode, because it thinks the drive is already configured correctly.
#   
#   Also kill redundant printk, ide_config_drive_speed() warns about errors.
# 
# drivers/ide/pci/via82cxxx.c
#   2005/02/03 21:47:05+01:00 bzolnier@trik.(none) +2 -5
#   [ide] fix via82cxxx resume failure
# 
diff -Nru a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
--- a/drivers/ide/pci/via82cxxx.c	2005-03-18 17:26:38 +01:00
+++ b/drivers/ide/pci/via82cxxx.c	2005-03-18 17:26:38 +01:00
@@ -332,11 +332,8 @@
 	struct ide_timing t, p;
 	unsigned int T, UT;
 
-	if (speed != XFER_PIO_SLOW && speed != drive->current_speed)
-		if (ide_config_drive_speed(drive, speed))
-			printk(KERN_WARNING "ide%d: Drive %d didn't "
-				"accept speed setting. Oh, well.\n",
-				drive->dn >> 1, drive->dn & 1);
+	if (speed != XFER_PIO_SLOW)
+		ide_config_drive_speed(drive, speed);
 
 	T = 1000000000 / via_clock;