diff options
author | Glauber Costa <gcosta@redhat.com> | 2008-04-08 12:20:52 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-04-19 13:19:57 -0400 |
commit | f9c258de3494a5249a61fe110ece2082e5927468 (patch) | |
tree | 53b6b8a031a1e99a76a579ab42d471356685fb86 /arch | |
parent | 85c246ee16fe00bf7bf9e7ff09a5d17d9a83cf71 (diff) |
x86: unify pci-nommu
merge pci-base_32.c and pci-nommu_64.c into pci-nommu.c
Their code were made the same, so now they can be merged.
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/Makefile | 5 | ||||
-rw-r--r-- | arch/x86/kernel/pci-base_32.c | 60 | ||||
-rw-r--r-- | arch/x86/kernel/pci-dma.c | 8 | ||||
-rw-r--r-- | arch/x86/kernel/pci-dma_64.c | 8 | ||||
-rw-r--r-- | arch/x86/kernel/pci-nommu.c (renamed from arch/x86/kernel/pci-nommu_64.c) | 2 |
5 files changed, 11 insertions, 72 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 1799f76a6a9..307aee5e8c5 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile | |||
@@ -24,9 +24,8 @@ obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o | |||
24 | obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o | 24 | obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o |
25 | obj-y += pci-dma_$(BITS).o bootflag.o e820_$(BITS).o | 25 | obj-y += pci-dma_$(BITS).o bootflag.o e820_$(BITS).o |
26 | obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o | 26 | obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o |
27 | obj-y += alternative.o i8253.o | 27 | obj-y += alternative.o i8253.o pci-nommu.o |
28 | obj-$(CONFIG_X86_64) += pci-nommu_64.o bugs_64.o | 28 | obj-$(CONFIG_X86_64) += bugs_64.o |
29 | obj-$(CONFIG_X86_32) += pci-base_32.o | ||
30 | obj-y += tsc_$(BITS).o io_delay.o rtc.o | 29 | obj-y += tsc_$(BITS).o io_delay.o rtc.o |
31 | 30 | ||
32 | obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o | 31 | obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o |
diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c deleted file mode 100644 index b44ea517fcf..00000000000 --- a/arch/x86/kernel/pci-base_32.c +++ /dev/null | |||
@@ -1,60 +0,0 @@ | |||
1 | #include <linux/mm.h> | ||
2 | #include <linux/kernel.h> | ||
3 | #include <linux/module.h> | ||
4 | #include <linux/dma-mapping.h> | ||
5 | #include <asm/dma-mapping.h> | ||
6 | |||
7 | static dma_addr_t pci32_map_single(struct device *dev, phys_addr_t ptr, | ||
8 | size_t size, int direction) | ||
9 | { | ||
10 | WARN_ON(size == 0); | ||
11 | flush_write_buffers(); | ||
12 | return ptr; | ||
13 | } | ||
14 | |||
15 | static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist, | ||
16 | int nents, int direction) | ||
17 | { | ||
18 | struct scatterlist *sg; | ||
19 | int i; | ||
20 | |||
21 | WARN_ON(nents == 0 || sglist[0].length == 0); | ||
22 | |||
23 | for_each_sg(sglist, sg, nents, i) { | ||
24 | BUG_ON(!sg_page(sg)); | ||
25 | |||
26 | sg->dma_address = sg_phys(sg); | ||
27 | sg->dma_length = sg->length; | ||
28 | } | ||
29 | |||
30 | flush_write_buffers(); | ||
31 | return nents; | ||
32 | } | ||
33 | |||
34 | /* Make sure we keep the same behaviour */ | ||
35 | static int pci32_map_error(dma_addr_t dma_addr) | ||
36 | { | ||
37 | return 0; | ||
38 | } | ||
39 | |||
40 | const struct dma_mapping_ops pci32_dma_ops = { | ||
41 | .map_single = pci32_map_single, | ||
42 | .unmap_single = NULL, | ||
43 | .map_sg = pci32_dma_map_sg, | ||
44 | .unmap_sg = NULL, | ||
45 | .sync_single_for_cpu = NULL, | ||
46 | .sync_single_for_device = NULL, | ||
47 | .sync_single_range_for_cpu = NULL, | ||
48 | .sync_single_range_for_device = NULL, | ||
49 | .sync_sg_for_cpu = NULL, | ||
50 | .sync_sg_for_device = NULL, | ||
51 | .mapping_error = pci32_map_error, | ||
52 | }; | ||
53 | |||
54 | /* this is temporary */ | ||
55 | int __init no_iommu_init(void) | ||
56 | { | ||
57 | dma_ops = &pci32_dma_ops; | ||
58 | return 0; | ||
59 | } | ||
60 | fs_initcall(no_iommu_init); | ||
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 1323cd80387..37a558a9615 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c | |||
@@ -3,6 +3,14 @@ | |||
3 | const struct dma_mapping_ops *dma_ops; | 3 | const struct dma_mapping_ops *dma_ops; |
4 | EXPORT_SYMBOL(dma_ops); | 4 | EXPORT_SYMBOL(dma_ops); |
5 | 5 | ||
6 | #ifdef CONFIG_IOMMU_DEBUG | ||
7 | int panic_on_overflow __read_mostly = 1; | ||
8 | int force_iommu __read_mostly = 1; | ||
9 | #else | ||
10 | int panic_on_overflow __read_mostly = 0; | ||
11 | int force_iommu __read_mostly = 0; | ||
12 | #endif | ||
13 | |||
6 | int dma_set_mask(struct device *dev, u64 mask) | 14 | int dma_set_mask(struct device *dev, u64 mask) |
7 | { | 15 | { |
8 | if (!dev->dma_mask || !dma_supported(dev, mask)) | 16 | if (!dev->dma_mask || !dma_supported(dev, mask)) |
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c index e697b865c1a..9ef18bfad2a 100644 --- a/arch/x86/kernel/pci-dma_64.c +++ b/arch/x86/kernel/pci-dma_64.c | |||
@@ -27,14 +27,6 @@ EXPORT_SYMBOL(iommu_bio_merge); | |||
27 | static int iommu_sac_force __read_mostly = 0; | 27 | static int iommu_sac_force __read_mostly = 0; |
28 | 28 | ||
29 | int no_iommu __read_mostly; | 29 | int no_iommu __read_mostly; |
30 | #ifdef CONFIG_IOMMU_DEBUG | ||
31 | int panic_on_overflow __read_mostly = 1; | ||
32 | int force_iommu __read_mostly = 1; | ||
33 | #else | ||
34 | int panic_on_overflow __read_mostly = 0; | ||
35 | int force_iommu __read_mostly= 0; | ||
36 | #endif | ||
37 | |||
38 | /* Set this to 1 if there is a HW IOMMU in the system */ | 30 | /* Set this to 1 if there is a HW IOMMU in the system */ |
39 | int iommu_detected __read_mostly = 0; | 31 | int iommu_detected __read_mostly = 0; |
40 | 32 | ||
diff --git a/arch/x86/kernel/pci-nommu_64.c b/arch/x86/kernel/pci-nommu.c index 8d036aee2a8..aec43d56f49 100644 --- a/arch/x86/kernel/pci-nommu_64.c +++ b/arch/x86/kernel/pci-nommu.c | |||
@@ -14,7 +14,7 @@ | |||
14 | static int | 14 | static int |
15 | check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size) | 15 | check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size) |
16 | { | 16 | { |
17 | if (hwdev && bus + size > *hwdev->dma_mask) { | 17 | if (hwdev && bus + size > *hwdev->dma_mask) { |
18 | if (*hwdev->dma_mask >= DMA_32BIT_MASK) | 18 | if (*hwdev->dma_mask >= DMA_32BIT_MASK) |
19 | printk(KERN_ERR | 19 | printk(KERN_ERR |
20 | "nommu_%s: overflow %Lx+%zu of device mask %Lx\n", | 20 | "nommu_%s: overflow %Lx+%zu of device mask %Lx\n", |