提交 116890d5 编写于 作者: G Glauber Costa 提交者: Ingo Molnar

x86: move x86_64-specific to common code.

This patch moves the bootmem functions, that are largely
x86_64-specific into pci-dma.c. The code goes inside an ifdef.
Signed-off-by: NGlauber Costa <gcosta@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
上级 cb5867a5
#include <linux/dma-mapping.h>
#include <linux/dmar.h>
#include <linux/bootmem.h>
#include <asm/proto.h>
#include <asm/dma.h>
#include <asm/gart.h>
#include <asm/calgary.h>
......@@ -26,6 +29,76 @@ int dma_set_mask(struct device *dev, u64 mask)
}
EXPORT_SYMBOL(dma_set_mask);
#ifdef CONFIG_X86_64
static __initdata void *dma32_bootmem_ptr;
static unsigned long dma32_bootmem_size __initdata = (128ULL<<20);
static int __init parse_dma32_size_opt(char *p)
{
if (!p)
return -EINVAL;
dma32_bootmem_size = memparse(p, &p);
return 0;
}
early_param("dma32_size", parse_dma32_size_opt);
void __init dma32_reserve_bootmem(void)
{
unsigned long size, align;
if (end_pfn <= MAX_DMA32_PFN)
return;
align = 64ULL<<20;
size = round_up(dma32_bootmem_size, align);
dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
__pa(MAX_DMA_ADDRESS));
if (dma32_bootmem_ptr)
dma32_bootmem_size = size;
else
dma32_bootmem_size = 0;
}
static void __init dma32_free_bootmem(void)
{
int node;
if (end_pfn <= MAX_DMA32_PFN)
return;
if (!dma32_bootmem_ptr)
return;
for_each_online_node(node)
free_bootmem_node(NODE_DATA(node), __pa(dma32_bootmem_ptr),
dma32_bootmem_size);
dma32_bootmem_ptr = NULL;
dma32_bootmem_size = 0;
}
void __init pci_iommu_alloc(void)
{
/* free the range so iommu could get some range less than 4G */
dma32_free_bootmem();
/*
* The order of these functions is important for
* fall-back/fail-over reasons
*/
#ifdef CONFIG_GART_IOMMU
gart_iommu_hole_init();
#endif
#ifdef CONFIG_CALGARY_IOMMU
detect_calgary();
#endif
detect_intel_iommu();
#ifdef CONFIG_SWIOTLB
pci_swiotlb_init();
#endif
}
#endif
static int __init pci_iommu_init(void)
{
#ifdef CONFIG_CALGARY_IOMMU
......
......@@ -271,74 +271,6 @@ static __init int iommu_setup(char *p)
}
early_param("iommu", iommu_setup);
static __initdata void *dma32_bootmem_ptr;
static unsigned long dma32_bootmem_size __initdata = (128ULL<<20);
static int __init parse_dma32_size_opt(char *p)
{
if (!p)
return -EINVAL;
dma32_bootmem_size = memparse(p, &p);
return 0;
}
early_param("dma32_size", parse_dma32_size_opt);
void __init dma32_reserve_bootmem(void)
{
unsigned long size, align;
if (end_pfn <= MAX_DMA32_PFN)
return;
align = 64ULL<<20;
size = round_up(dma32_bootmem_size, align);
dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
__pa(MAX_DMA_ADDRESS));
if (dma32_bootmem_ptr)
dma32_bootmem_size = size;
else
dma32_bootmem_size = 0;
}
static void __init dma32_free_bootmem(void)
{
int node;
if (end_pfn <= MAX_DMA32_PFN)
return;
if (!dma32_bootmem_ptr)
return;
for_each_online_node(node)
free_bootmem_node(NODE_DATA(node), __pa(dma32_bootmem_ptr),
dma32_bootmem_size);
dma32_bootmem_ptr = NULL;
dma32_bootmem_size = 0;
}
void __init pci_iommu_alloc(void)
{
/* free the range so iommu could get some range less than 4G */
dma32_free_bootmem();
/*
* The order of these functions is important for
* fall-back/fail-over reasons
*/
#ifdef CONFIG_GART_IOMMU
gart_iommu_hole_init();
#endif
#ifdef CONFIG_CALGARY_IOMMU
detect_calgary();
#endif
detect_intel_iommu();
#ifdef CONFIG_SWIOTLB
pci_swiotlb_init();
#endif
}
#ifdef CONFIG_PCI
/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
......
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