Messages in this thread Patch in this message | | | From | "Salomon, Frank" <> | Date | Tue, 17 May 2005 16:27:20 +0200 | Subject | pci-irq VIA82C586 problem on IBM 4694-205 kernel version 2.4.29 |
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Hi All,
With kernel version 2.4.18 I have no problem to run pcnet32.o on the IBM 4694-205. Now I switch to kernel version 2.4.29. insmod crc32 : ok , insmod mii : ok , insmod pcnet32 : ok.
But if I run ifconfig (ifup) the system fries. Can't toggle the numlock led. I find out that the system generates permanently interrupts from the pcnet32 chip after calling request_irq (irq=9).
lspci: 00:00.0 Host bridge: VIA Technologies, Inc. VT82C585VP [Apollo VP1/VPX] (rev 25) 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 47) 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus Master IDE (rev 06) 00:07.2 USB Controller: VIA Technologies, Inc. USB (rev 02) 00:07.3 Non-VGA unclassified device: VIA Technologies, Inc. VT82C586B ACPI (rev 10) 00:0a.0 VGA compatible controller: Cirrus Logic GD 5446 00:0b.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 43)
A possible solution could be (only tested on IBM 4694-205 and I don't have other systems with VIA Tech.):
diff -u 2.4.29_orig/arch/i386/kernel/pci-irq.c 2.4.29/arch/i386/kernel/pci-irq.c --- 2.4.29_orig/arch/i386/kernel/pci-irq.c Wed Jan 19 15:09:25 2005 +++ 2.4.29/arch/i386/kernel/pci-irq.c Tue May 17 15:55:28 2005 @@ -214,6 +214,17 @@ return 1; }
+static int pirq_via_586_get(struct pci_dev *router, struct pci_dev *dev, int pirq) +{ + return read_config_nybble(router, 0x55, pirq); +} +static int pirq_via_586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) +{ + write_config_nybble(router, 0x55, pirq, irq); + return 1; +} + + /* * ITE 8330G pirq rules are nibble-based * FIXME: pirqmap may be { 1, 0, 3, 2 }, @@ -649,6 +660,10 @@ switch(device) { case PCI_DEVICE_ID_VIA_82C586_0: + r->name = "VIA"; + r->get = pirq_via_586_get; + r->set = pirq_via_586_set; + return 1; case PCI_DEVICE_ID_VIA_82C596: case PCI_DEVICE_ID_VIA_82C686: case PCI_DEVICE_ID_VIA_8231:
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