diff options
author | Glauber Costa <gcosta@redhat.com> | 2008-04-08 13:20:54 -0300 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-04-19 19:19:57 +0200 |
commit | 116890d556af38d539597655c564a73e6eef3d9e (patch) | |
tree | 4c284032ee8b59fb97fd01b86ba6ca0b925480fe /arch | |
parent | cb5867a5d8ca20e16ddc3397c36ee9c2e4cba219 (diff) | |
download | kernel_samsung_smdk4412-116890d556af38d539597655c564a73e6eef3d9e.zip kernel_samsung_smdk4412-116890d556af38d539597655c564a73e6eef3d9e.tar.gz kernel_samsung_smdk4412-116890d556af38d539597655c564a73e6eef3d9e.tar.bz2 |
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: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/pci-dma.c | 73 | ||||
-rw-r--r-- | arch/x86/kernel/pci-dma_64.c | 68 |
2 files changed, 73 insertions, 68 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 6b77fd8..9144336 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -1,6 +1,9 @@ #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 diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c index 4202130..6b204cc 100644 --- a/arch/x86/kernel/pci-dma_64.c +++ b/arch/x86/kernel/pci-dma_64.c @@ -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 */ |