[PATCH 12/28] x86: move x86_64-specific to common code.

Glauber Costa
2008-04-08T16:20:54Z

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>
---
arch/x86/kernel/pci-dma.c | 73 ++++++++++++++++++++++++++++++++++++++++++
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 e81e16f..f6d6a92 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -1,7 +1,10 @@
#include <linux/dma-mapping.h>
#include <linux/dmar.h>
#include <linux/pci.h>
+#include <linux/bootmem.h>

+#include <asm/proto.h>
+#include <asm/dma.h>
#include <asm/gart.h>
#include <asm/calgary.h>

@@ -66,3 +69,73 @@ static __devinit void via_no_dac(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
#endif
+
+#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
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index e194460..7820675 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -268,71 +268,3 @@ static __init int iommu_setup(char *p)
return 0;
}
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
-}
--
1.5.0.6