Gabor Juhos 6015a856f1 MIPS: ath79: add a workaround for a PCI controller bug in AR7240 SoCs ... The PCI controller of the AR724X SoCs has a hardware bag. If the BAR0 register of the PCI device is set to the proper base address, the memory address space of the device is not accessible. When the device driver tries to access the memory address space of the PCI device, it leads to data bus error, similiar to this: Data bus error, epc == 801f69a0, ra == 801f698c Oops[#1]: Cpu 0 $ 0 : 00000000 00000061 deadbeef 000000ff $ 4 : 00000000 000000ff 00000014 00000000 $ 8 : ff000000 fffffffc 00000000 00000000 $12 : 000001f5 00000006 00000000 6e637920 $16 : 81ca4000 81ca0260 81ca4000 804d70f0 $20 : fffffff4 0000002b 803ad4c4 00000000 $24 : 00000003 00000000 $28 : 81c20000 81c21c60 00000000 801f698c Hi : 00000000 Lo : 00000000 epc : 801f69a0 ath9k_hw_init+0xd0/0xa70 Not tainted ra : 801f698c ath9k_hw_init+0xbc/0xa70 Status: 1000c103 KERNEL EXL IE Cause : 1080001c PrId : 00019374 (MIPS 24Kc) Modules linked in: Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000) Stack : 00000000 00000000 00000000 00000000 81c21c78 81ca0260 00000000 804d70f0 81ca0260 81c21cc0 81ca0e80 81ca0260 81ca4000 804d70f0 fffffff4 0000002b 803ad4c4 00000000 00000000 801e3ae8 81c9d080 81ca0e80 b0000000 800b9b9c 00000008 81c9d000 8031aeb0 802d38a0 00000000 81c14c00 81c14c60 00000000 81ca0e80 81ca0260 b0000000 801f08a4 81c9c820 81c21d48 81c9c820 80144320 ... Call Trace: [<801f69a0>] ath9k_hw_init+0xd0/0xa70 [<801e3ae8>] ath9k_init_device+0x174/0x680 [<801f08a4>] ath_pci_probe+0x27c/0x380 [<8019e490>] pci_device_probe+0x74/0x9c [<801bfadc>] driver_probe_device+0x9c/0x1b4 [<801bfcb0>] __driver_attach+0xbc/0xc4 [<801bea0c>] bus_for_each_dev+0x5c/0x98 [<801bf394>] bus_add_driver+0x1d0/0x2a4 [<801c0364>] driver_register+0x8c/0x16c [<8019e72c>] __pci_register_driver+0x4c/0xe4 [<803d3d40>] ath9k_init+0x3c/0x88 [<80060930>] do_one_initcall+0x3c/0x1cc [<803c297c>] kernel_init+0xa4/0x138 [<80063c04>] kernel_thread_helper+0x10/0x18 Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3494/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2012-05-15 17:49:03 +02:00
..
fixup-bcm63xx.c
fixup-capcella.c
fixup-cobalt.c	mips/PCI: get rid of device resource fixups	2012-02-23 20:19:02 -07:00
fixup-emma2rh.c
fixup-fuloong2e.c
fixup-ip32.c
fixup-jmr3927.c
fixup-lemote2f.c
fixup-malta.c
fixup-mpc30x.c
fixup-pmcmsp.c
fixup-pnx8550.c
fixup-rbtx4927.c
fixup-rbtx4938.c
fixup-rc32434.c
fixup-sb1250.c
fixup-sni.c
fixup-tb0219.c
fixup-tb0226.c
fixup-tb0287.c
fixup-wrppmc.c
fixup-yosemite.c
Makefile	MIPS: ath79: rename pci-ath724x.c to make it reflect the real SoC name	2012-05-15 17:49:01 +02:00
msi-octeon.c	MIPS: Fix up inconsistency in panic() string argument.	2011-12-07 22:01:45 +00:00
ops-bcm63xx.c
ops-bonito64.c
ops-bridge.c
ops-emma2rh.c
ops-gt64xxx_pci0.c
ops-lantiq.c	MIPS: Lantiq: Add PCI controller support.	2011-05-19 09:55:42 +01:00
ops-loongson2.c
ops-mace.c
ops-msc.c
ops-nile4.c	MIPS: NILE4: Remove useless inclusion of GT64120 header.	2011-07-20 23:12:09 +01:00
ops-pmcmsp.c	MIPS: irq: Remove IRQF_DISABLED	2011-12-07 22:03:45 +00:00
ops-pnx8550.c
ops-rc32434.c
ops-sni.c
ops-titan-ht.c
ops-titan.c
ops-tx3927.c	MIPS: irq: Remove IRQF_DISABLED	2011-12-07 22:03:45 +00:00
ops-tx4927.c
ops-vr41xx.c
pci-alchemy.c	MIPS: Fix Jazz 64-bit build error.	2011-12-07 22:01:45 +00:00
pci-ar724x.c	MIPS: ath79: add a workaround for a PCI controller bug in AR7240 SoCs	2012-05-15 17:49:03 +02:00
pci-bcm47xx.c	bcma: add PCIe host controller	2012-02-06 14:53:04 -05:00
pci-bcm63xx.c	MIPS: BCM63XX: Add support for bcm6368 CPU.	2011-12-07 22:03:04 +00:00
pci-bcm63xx.h
pci-bcm1480.c	mips/PCI: replace pci_probe_only with pci_flags	2012-02-23 20:18:57 -07:00
pci-bcm1480ht.c
pci-emma2rh.c
pci-ip27.c	mips/PCI: replace pci_probe_only with pci_flags	2012-02-23 20:18:57 -07:00
pci-ip32.c
pci-lantiq.c	mips/PCI: replace pci_probe_only with pci_flags	2012-02-23 20:18:57 -07:00
pci-lantiq.h	MIPS: Lantiq: Add PCI controller support.	2011-05-19 09:55:42 +01:00
pci-lasat.c
pci-octeon.c	MIPS: Octeon: Update PCI Latency timer and enable more error reporting.	2011-12-08 12:26:28 +00:00
pci-rc32434.c	MIPS: RC32434: Fix PCI build error	2011-09-21 17:51:57 +02:00
pci-sb1250.c	mips/PCI: replace pci_probe_only with pci_flags	2012-02-23 20:18:57 -07:00
pci-tx4927.c	MIPS: irq: Remove IRQF_DISABLED	2011-12-07 22:03:45 +00:00
pci-tx4938.c	MIPS: irq: Remove IRQF_DISABLED	2011-12-07 22:03:45 +00:00
pci-tx4939.c	MIPS: irq: Remove IRQF_DISABLED	2011-12-07 22:03:45 +00:00
pci-vr41xx.c	treewide: Convert uses of struct resource to resource_size(ptr)	2011-06-10 14:55:36 +02:00
pci-vr41xx.h
pci-xlr.c	mips/PCI: replace pci_probe_only with pci_flags	2012-02-23 20:18:57 -07:00
pci-yosemite.c
pci.c	mips/PCI: get rid of device resource fixups	2012-02-23 20:19:02 -07:00
pcie-octeon.c	MIPS: Octeon: Add support for OCTEON II PCIe	2011-12-08 12:32:57 +00:00