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author | Rod Whitby <rod@whitby.id.au> | 2006-01-04 17:17:13 (GMT) |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-04 17:17:13 (GMT) |
commit | 313cbb5519405966e3e65fca86c0305ab24f2a3b (patch) | |
tree | 949bb8daf7a32d5921cabe9d129df1d6342d40da /arch/arm/mach-ixp4xx/common-pci.c | |
parent | 8d27e6992bc6a7ca7eaa1d29fb1a8d6cb6022c45 (diff) | |
download | linux-313cbb5519405966e3e65fca86c0305ab24f2a3b.tar.xz |
[ARM] 3218/1: PAGE_SHIFT undeclared in arch-ixp4xx/memory.h (adjust_zones moved out of line)
Patch from Rod Whitby
PAGE_SHIFT is undeclared in include/asm-arm/arch-ixp4xx/memory.h, identified by the following kernel compilation error:
CC [M] sound/core/memory.o
In file included from include/asm/memory.h:27,
from include/asm/io.h:28,
from sound/core/memory.c:24:
include/asm/arch/memory.h: In function `__arch_adjust_zones':
include/asm/arch/memory.h:28: error: `PAGE_SHIFT' undeclared (first use
in this function)
This patch replaces my previous attempt at fixing this problem (Patch 3214/1) and is based on the following feedback:
Russell King wrote:
> The error you see came up on SA1100. The best solution was to move
> the __arch_adjust_zones() function out of line. I suggest ixp4xx
> does the same.
I have moved the function out of line into arch/arm/mach-ixp4xx/common-pci.c as suggested.
Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ixp4xx/common-pci.c')
-rw-r--r-- | arch/arm/mach-ixp4xx/common-pci.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c index 9795da2..6e3462e 100644 --- a/arch/arm/mach-ixp4xx/common-pci.c +++ b/arch/arm/mach-ixp4xx/common-pci.c @@ -341,6 +341,29 @@ int dma_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size) return (dev->bus == &pci_bus_type ) && ((dma_addr + size) >= SZ_64M); } +/* + * Only first 64MB of memory can be accessed via PCI. + * We use GFP_DMA to allocate safe buffers to do map/unmap. + * This is really ugly and we need a better way of specifying + * DMA-capable regions of memory. + */ +void __init ixp4xx_adjust_zones(int node, unsigned long *zone_size, + unsigned long *zhole_size) +{ + unsigned int sz = SZ_64M >> PAGE_SHIFT; + + /* + * Only adjust if > 64M on current system + */ + if (node || (zone_size[0] <= sz)) + return; + + zone_size[1] = zone_size[0] - sz; + zone_size[0] = sz; + zhole_size[1] = zhole_size[0]; + zhole_size[0] = 0; +} + void __init ixp4xx_pci_preinit(void) { unsigned long processor_id; |