From: Michael Frank <mhf-jjFNsPSvq+iXDw4h08c5KA@public.gmane.org>
To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Fwd: [Swsusp-devel] TWEAK/PATCH for 2.4.22: Fixing yenta with ToPIC95 on resume from swsusp
Date: Sat, 27 Sep 2003 02:30:37 +0800 [thread overview]
Message-ID: <200309270230.37064.mhf@linuxmail.org> (raw)
PCMCIA in a Toshiba libretto L2 failed to work on resume from swsusp/S4.
Modules were unloaded on suspend and reloaded on resume.
Firstly, the controller ends up being disabled and secondly shared interrupts break.
This is an applicable chipset.
00:12.0 CardBus bridge: Toshiba America Info Systems ToPIC95 PCI to Cardbus Bridge with ZV Support (rev 32)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 168
Interrupt: pin A routed to IRQ 3
Region 0: Memory at 10001000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory window 0: 10400000-107ff000
Memory window 1: 10800000-10bff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-
16-bit legacy interface ports at 0001
To reenable the controller on resume:
# pcitweak -w 00:12:0 0x84 -b 0
It also had trouble with shared interrupts on resume.
Applicable chipset:
0:07.0 ISA bridge: ALi Corporation M1533 PCI to ISA Bridge [Aladdin IV]
Subsystem: Toshiba America Info Systems: Unknown device 0004
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Capabilities: [a0] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:11.0 Bridge: ALi Corporation M7101 PMU
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
The patch below fixes that by preventing interrupt sharing
but may break things, so use it only when it does not work
and with interrupts being shared.
--- linux-2.4.22-mhf75/drivers/acpi/pci_link.c 2003-09-21 13:32:17.000000000 +0800
+++ linux-2.4.22-mhf76/drivers/acpi/pci_link.c 2003-09-21 22:09:27.000000000 +0800
@@ -517,7 +517,7 @@
acpi_device_bid(link->device));
return_VALUE(-ENODEV);
} else {
- acpi_irq_penalty[link->irq.active] += 100;
+ acpi_irq_penalty[link->irq.active] += 1000000;
printk(PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_name(link->device),
acpi_device_bid(link->device), link->irq.active);
With the tweaks presented, this machine is fully functional on resume from
swsusp/S4 including PCMCIA, USB and network using swsusp-1.1-rc9 on 2.4.22.
Regards
Michael
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reply other threads:[~2003-09-26 18:30 UTC|newest]
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