ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/pci.h @ 11221:7c9d7fc3dce5

[HVM] Fix SMBIOS entry point copy destination.
Spotted by Xiaowei Yang <xiaowei.yang@intel.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
author kaf24@localhost.localdomain
date Sat Aug 19 12:06:36 2006 +0100 (2006-08-19)
parents 3b74edc512b4
children 3adf00179a63
line source
1 #ifndef __x8664_PCI_H
2 #define __x8664_PCI_H
4 #include <linux/config.h>
5 #include <asm/io.h>
7 #ifdef __KERNEL__
9 #include <linux/mm.h> /* for struct page */
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 */
15 #ifdef CONFIG_PCI
16 extern 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
22 extern unsigned long pci_mem_start;
23 #define PCIBIOS_MIN_IO 0x1000
24 #define PCIBIOS_MIN_MEM (pci_mem_start)
26 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
28 void pcibios_config_init(void);
29 struct pci_bus * pcibios_scan_root(int bus);
30 extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
31 extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
33 void pcibios_set_master(struct pci_dev *dev);
34 void pcibios_penalize_isa_irq(int irq, int active);
35 struct irq_routing_table *pcibios_get_irq_routing_table(void);
36 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
38 #include <linux/types.h>
39 #include <linux/slab.h>
40 #include <asm/scatterlist.h>
41 #include <linux/string.h>
42 #include <asm/page.h>
43 #include <linux/dma-mapping.h> /* for have_iommu */
45 extern int iommu_setup(char *opt);
47 /* The PCI address space does equal the physical memory
48 * address space. The networking and block device layers use
49 * this boolean for bounce buffer decisions
50 *
51 * On AMD64 it mostly equals, but we set it to zero if a hardware
52 * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
53 */
54 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
56 #ifdef CONFIG_GART_IOMMU
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 */
63 extern int iommu_sac_force;
64 #define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force)
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))
79 #elif defined(CONFIG_SWIOTLB)
81 #define pci_dac_dma_supported(pci_dev, mask) 1
83 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
84 dma_addr_t ADDR_NAME;
85 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
86 __u32 LEN_NAME;
87 #define pci_unmap_addr(PTR, ADDR_NAME) \
88 ((PTR)->ADDR_NAME)
89 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
90 (((PTR)->ADDR_NAME) = (VAL))
91 #define pci_unmap_len(PTR, LEN_NAME) \
92 ((PTR)->LEN_NAME)
93 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
94 (((PTR)->LEN_NAME) = (VAL))
96 #else
97 /* No IOMMU */
99 #define pci_dac_dma_supported(pci_dev, mask) 1
101 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
102 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
103 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
104 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
105 #define pci_unmap_len(PTR, LEN_NAME) (0)
106 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
108 #endif
110 #include <asm-generic/pci-dma-compat.h>
112 static inline dma64_addr_t
113 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
114 {
115 return ((dma64_addr_t) page_to_phys(page) +
116 (dma64_addr_t) offset);
117 }
119 static inline struct page *
120 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
121 {
122 return virt_to_page(__va(dma_addr));
123 }
125 static inline unsigned long
126 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
127 {
128 return (dma_addr & ~PAGE_MASK);
129 }
131 static inline void
132 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
133 {
134 }
136 static inline void
137 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
138 {
139 flush_write_buffers();
140 }
142 #ifdef CONFIG_PCI
143 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
144 enum pci_dma_burst_strategy *strat,
145 unsigned long *strategy_parameter)
146 {
147 *strat = PCI_DMA_BURST_INFINITY;
148 *strategy_parameter = ~0UL;
149 }
150 #endif
152 #define HAVE_PCI_MMAP
153 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
154 enum pci_mmap_state mmap_state, int write_combine);
156 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
157 {
158 }
160 #endif /* __KERNEL__ */
162 /* generic pci stuff */
163 #ifdef CONFIG_PCI
164 #include <asm-generic/pci.h>
165 #endif
167 /* On Xen we have to scan all functions since Xen hides bridges from
168 * us. If a bridge is at fn=0 and that slot has a multifunction
169 * device, we won't find the additional devices without scanning all
170 * functions. */
171 #undef pcibios_scan_all_fns
172 #define pcibios_scan_all_fns(a, b) 1
174 #endif /* __x8664_PCI_H */