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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __x8664_PCI_H
2#define __x8664_PCI_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#include <asm/io.h>
5
6#ifdef __KERNEL__
7
8#include <linux/mm.h> /* for struct page */
9
10/* Can be used to override the logic in pci_scan_bus for skipping
11 already-configured bus numbers - to be used for buggy BIOSes
12 or architectures with incomplete PCI setup by the loader */
13
14#ifdef CONFIG_PCI
15extern unsigned int pcibios_assign_all_busses(void);
16#else
17#define pcibios_assign_all_busses() 0
18#endif
19#define pcibios_scan_all_fns(a, b) 0
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021extern unsigned long pci_mem_start;
Linus Torvalds2ba84682005-08-14 18:21:30 -070022#define PCIBIOS_MIN_IO 0x1000
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#define PCIBIOS_MIN_MEM (pci_mem_start)
24
Linus Torvalds2ba84682005-08-14 18:21:30 -070025#define PCIBIOS_MIN_CARDBUS_IO 0x4000
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027void pcibios_config_init(void);
28struct pci_bus * pcibios_scan_root(int bus);
29extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
30extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
31
32void pcibios_set_master(struct pci_dev *dev);
David Shaohua Lic9c3e452005-04-01 00:07:31 -050033void pcibios_penalize_isa_irq(int irq, int active);
Linus Torvalds1da177e2005-04-16 15:20:36 -070034struct irq_routing_table *pcibios_get_irq_routing_table(void);
35int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
36
37#include <linux/types.h>
38#include <linux/slab.h>
39#include <asm/scatterlist.h>
40#include <linux/string.h>
41#include <asm/page.h>
42
Jon Mason0dc243a2006-06-26 13:58:11 +020043extern void pci_iommu_alloc(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070044extern int iommu_setup(char *opt);
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046/* The PCI address space does equal the physical memory
47 * address space. The networking and block device layers use
48 * this boolean for bounce buffer decisions
49 *
Muli Ben-Yehuda17a941d2006-01-11 22:44:42 +010050 * On AMD64 it mostly equals, but we set it to zero if a hardware
51 * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 */
Muli Ben-Yehuda17a941d2006-01-11 22:44:42 +010053#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
54
Jon Masone4650582006-06-26 13:58:14 +020055#if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57/*
58 * x86-64 always supports DAC, but sometimes it is useful to force
59 * devices through the IOMMU to get automatic sg list merging.
60 * Optional right now.
61 */
62extern int iommu_sac_force;
63#define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force)
64
65#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
66 dma_addr_t ADDR_NAME;
67#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
68 __u32 LEN_NAME;
69#define pci_unmap_addr(PTR, ADDR_NAME) \
70 ((PTR)->ADDR_NAME)
71#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
72 (((PTR)->ADDR_NAME) = (VAL))
73#define pci_unmap_len(PTR, LEN_NAME) \
74 ((PTR)->LEN_NAME)
75#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
76 (((PTR)->LEN_NAME) = (VAL))
77
78#else
79/* No IOMMU */
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081#define pci_dac_dma_supported(pci_dev, mask) 1
82
83#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
84#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
85#define pci_unmap_addr(PTR, ADDR_NAME) (0)
86#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
87#define pci_unmap_len(PTR, LEN_NAME) (0)
88#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
89
90#endif
91
92#include <asm-generic/pci-dma-compat.h>
93
94static inline dma64_addr_t
95pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
96{
97 return ((dma64_addr_t) page_to_phys(page) +
98 (dma64_addr_t) offset);
99}
100
101static inline struct page *
102pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
103{
104 return virt_to_page(__va(dma_addr));
105}
106
107static inline unsigned long
108pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
109{
110 return (dma_addr & ~PAGE_MASK);
111}
112
113static inline void
114pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
115{
116}
117
118static inline void
119pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
120{
121 flush_write_buffers();
122}
123
Andrew Mortonbb4a61b2005-06-06 23:07:46 -0700124#ifdef CONFIG_PCI
David S. Millere24c2d92005-06-02 12:55:50 -0700125static inline void pci_dma_burst_advice(struct pci_dev *pdev,
126 enum pci_dma_burst_strategy *strat,
127 unsigned long *strategy_parameter)
128{
129 *strat = PCI_DMA_BURST_INFINITY;
130 *strategy_parameter = ~0UL;
131}
Andrew Mortonbb4a61b2005-06-06 23:07:46 -0700132#endif
David S. Millere24c2d92005-06-02 12:55:50 -0700133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134#define HAVE_PCI_MMAP
135extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
136 enum pci_mmap_state mmap_state, int write_combine);
137
138static inline void pcibios_add_platform_entries(struct pci_dev *dev)
139{
140}
141
142#endif /* __KERNEL__ */
143
144/* generic pci stuff */
145#ifdef CONFIG_PCI
146#include <asm-generic/pci.h>
147#endif
148
149#endif /* __x8664_PCI_H */