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[ARM] cputype: separate definitions, use them

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Add asm/cputype.h, moving functions and definitions from asm/system.h
there.  Convert all users of 'processor_id' to the more efficient
read_cpuid_id() function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2008-08-10 18:08:10 +01:00
committed by Russell King
parent b8e6c91c74
commit 0ba8b9b273
18 changed files with 131 additions and 114 deletions
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7
arch/arm/mach-ixp4xx/common-pci.c
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@@ -27,6 +27,7 @@
#include <linux/device.h>
#include <asm/dma-mapping.h>
#include <asm/cputype.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/sizes.h>
@@ -366,15 +367,13 @@ void __init ixp4xx_adjust_zones(int node, unsigned long *zone_size,
void __init ixp4xx_pci_preinit(void)
{
unsigned long processor_id;
asm("mrc p15, 0, %0, cr0, cr0, 0;" : "=r"(processor_id) :);
unsigned long cpuid = read_cpuid_id();
/*
* Determine which PCI read method to use.
* Rev 0 IXP425 requires workaround.
*/
if (!(processor_id & 0xf) && cpu_is_ixp42x()) {
if (!(cpuid & 0xf) && cpu_is_ixp42x()) {
printk("PCI: IXP42x A0 silicon detected - "
"PCI Non-Prefetch Workaround Enabled\n");
ixp4xx_pci_read = ixp4xx_pci_read_errata;