kernel-ark/include/asm-mips/mach-au1x00
Alexander Bigga fd046eb537 [MIPS] Alchemy: Fix PCI-memory access
The problem was introduced in 2.6.18.3 with the casting of some
36bit-defines (PCI memory) in au1000.h to resource_size_t which may be
u32 or u64 depending on the experimental CONFIG_RESOURCES_64BIT.

With unset CONFIG_RESOURCES_64BIT, the pci-memory cannot be accessed
because the ioremap in arch/mips/au1000/common/pci.c already used the
truncated addresses.
With set CONFIG_RESOURCES_64BIT, things get even worse, because PCI-scan
aborts, due to resource conflict: request_resource() in arch/mips/pci/pci.c
fails because the maximum iomem-address is 0xffffffff (32bit) but the
pci-memory-start-address is 0x440000000 (36bit).

To get pci working again, I propose the following patch:

1. remove the resource_size_t-casting from au1000.h again
2. make the casting in arch/mips/au1000/common/pci.c (it's allowed and
necessary here. The 36bit-handling will be done in __fixup_bigphys_addr).

With this patch pci works again like in 2.6.18.2, the gcc-compile warnings
in pci.c are gone and it doesn't depend on CONFIG_EXPERIMENTAL.

Signed-off-by: Alexander Bigga <ab@mycable.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06 16:53:24 +00:00
..
au1xxx_dbdma.h [PATCH] Alchemy: Delete unused pt_regs * argument from au1xxx_dbdma_chan_alloc 2006-09-26 08:48:54 -07:00
au1xxx_gpio.h
au1xxx_ide.h [PATCH] make au1xxx-ide compile again 2006-11-22 23:34:02 +00:00
au1xxx_psc.h [MIPS] au1xxx: fix PSC_SMBTXRX_RSR. 2006-06-29 21:10:53 +01:00
au1xxx.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
au1000_dma.h IRQ: Use the new typedef for interrupt handler function pointers 2006-10-09 12:19:47 +01:00
au1000_gpio.h
au1000.h [MIPS] Alchemy: Fix PCI-memory access 2007-02-06 16:53:24 +00:00
au1100_mmc.h
ioremap.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
timex.h