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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-x86_64/pci.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-x86_64/pci.h')
-rw-r--r--include/asm-x86_64/pci.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h
new file mode 100644
index 000000000000..8712520ca47f
--- /dev/null
+++ b/include/asm-x86_64/pci.h
@@ -0,0 +1,141 @@
1#ifndef __x8664_PCI_H
2#define __x8664_PCI_H
3
4#include <linux/config.h>
5#include <asm/io.h>
6
7#ifdef __KERNEL__
8
9#include <linux/mm.h> /* for struct page */
10
11/* Can be used to override the logic in pci_scan_bus for skipping
12 already-configured bus numbers - to be used for buggy BIOSes
13 or architectures with incomplete PCI setup by the loader */
14
15#ifdef CONFIG_PCI
16extern unsigned int pcibios_assign_all_busses(void);
17#else
18#define pcibios_assign_all_busses() 0
19#endif
20#define pcibios_scan_all_fns(a, b) 0
21
22extern int no_iommu, force_iommu;
23
24extern unsigned long pci_mem_start;
25#define PCIBIOS_MIN_IO 0x1000
26#define PCIBIOS_MIN_MEM (pci_mem_start)
27
28#define PCIBIOS_MIN_CARDBUS_IO 0x4000
29
30void pcibios_config_init(void);
31struct pci_bus * pcibios_scan_root(int bus);
32extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
33extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
34
35void pcibios_set_master(struct pci_dev *dev);
36void pcibios_penalize_isa_irq(int irq);
37struct irq_routing_table *pcibios_get_irq_routing_table(void);
38int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
39
40#include <linux/types.h>
41#include <linux/slab.h>
42#include <asm/scatterlist.h>
43#include <linux/string.h>
44#include <asm/page.h>
45
46extern int iommu_setup(char *opt);
47
48#ifdef CONFIG_GART_IOMMU
49/* The PCI address space does equal the physical memory
50 * address space. The networking and block device layers use
51 * this boolean for bounce buffer decisions
52 *
53 * On AMD64 it mostly equals, but we set it to zero to tell some subsystems
54 * that an IOMMU is available.
55 */
56#define PCI_DMA_BUS_IS_PHYS (no_iommu ? 1 : 0)
57
58/*
59 * x86-64 always supports DAC, but sometimes it is useful to force
60 * devices through the IOMMU to get automatic sg list merging.
61 * Optional right now.
62 */
63extern int iommu_sac_force;
64#define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force)
65
66#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
67 dma_addr_t ADDR_NAME;
68#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
69 __u32 LEN_NAME;
70#define pci_unmap_addr(PTR, ADDR_NAME) \
71 ((PTR)->ADDR_NAME)
72#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
73 (((PTR)->ADDR_NAME) = (VAL))
74#define pci_unmap_len(PTR, LEN_NAME) \
75 ((PTR)->LEN_NAME)
76#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
77 (((PTR)->LEN_NAME) = (VAL))
78
79#else
80/* No IOMMU */
81
82#define PCI_DMA_BUS_IS_PHYS 1
83#define pci_dac_dma_supported(pci_dev, mask) 1
84
85#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
86#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
87#define pci_unmap_addr(PTR, ADDR_NAME) (0)
88#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
89#define pci_unmap_len(PTR, LEN_NAME) (0)
90#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
91
92#endif
93
94#include <asm-generic/pci-dma-compat.h>
95
96static inline dma64_addr_t
97pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
98{
99 return ((dma64_addr_t) page_to_phys(page) +
100 (dma64_addr_t) offset);
101}
102
103static inline struct page *
104pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
105{
106 return virt_to_page(__va(dma_addr));
107}
108
109static inline unsigned long
110pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
111{
112 return (dma_addr & ~PAGE_MASK);
113}
114
115static inline void
116pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
117{
118}
119
120static inline void
121pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
122{
123 flush_write_buffers();
124}
125
126#define HAVE_PCI_MMAP
127extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
128 enum pci_mmap_state mmap_state, int write_combine);
129
130static inline void pcibios_add_platform_entries(struct pci_dev *dev)
131{
132}
133
134#endif /* __KERNEL__ */
135
136/* generic pci stuff */
137#ifdef CONFIG_PCI
138#include <asm-generic/pci.h>
139#endif
140
141#endif /* __x8664_PCI_H */