1#ifndef __i386_PCI_H
2#define __i386_PCI_H
3
4
5#ifdef __KERNEL__
6#include <linux/mm.h>		/* for struct page */
7
8/* Can be used to override the logic in pci_scan_bus for skipping
9   already-configured bus numbers - to be used for buggy BIOSes
10   or architectures with incomplete PCI setup by the loader */
11
12#ifdef CONFIG_PCI
13extern unsigned int pcibios_assign_all_busses(void);
14#else
15#define pcibios_assign_all_busses()	0
16#endif
17#define pcibios_scan_all_fns(a, b)	0
18
19extern unsigned long pci_mem_start;
20#define PCIBIOS_MIN_IO		0x1000
21#define PCIBIOS_MIN_MEM		(pci_mem_start)
22
23#define PCIBIOS_MIN_CARDBUS_IO	0x4000
24
25void pcibios_config_init(void);
26struct pci_bus * pcibios_scan_root(int bus);
27
28void pcibios_set_master(struct pci_dev *dev);
29void pcibios_penalize_isa_irq(int irq, int active);
30struct irq_routing_table *pcibios_get_irq_routing_table(void);
31int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
32
33/* Dynamic DMA mapping stuff.
34 * i386 has everything mapped statically.
35 */
36
37#include <linux/types.h>
38#include <linux/slab.h>
39#include <asm/scatterlist.h>
40#include <linux/string.h>
41#include <asm/io.h>
42
43struct pci_dev;
44
45/* The PCI address space does equal the physical memory
46 * address space.  The networking and block device layers use
47 * this boolean for bounce buffer decisions.
48 */
49#define PCI_DMA_BUS_IS_PHYS	(1)
50
51/* pci_unmap_{page,single} is a nop so... */
52#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
53#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
54#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
55#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
56#define pci_unmap_len(PTR, LEN_NAME)		(0)
57#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
58
59/* This is always fine. */
60#define pci_dac_dma_supported(pci_dev, mask)	(1)
61
62static inline dma64_addr_t
63pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
64{
65	return ((dma64_addr_t) page_to_phys(page) +
66		(dma64_addr_t) offset);
67}
68
69static inline struct page *
70pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
71{
72	return pfn_to_page(dma_addr >> PAGE_SHIFT);
73}
74
75static inline unsigned long
76pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
77{
78	return (dma_addr & ~PAGE_MASK);
79}
80
81static inline void
82pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
83{
84}
85
86static inline void
87pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
88{
89	flush_write_buffers();
90}
91
92#define HAVE_PCI_MMAP
93extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
94			       enum pci_mmap_state mmap_state, int write_combine);
95
96
97static inline void pcibios_add_platform_entries(struct pci_dev *dev)
98{
99}
100
101#ifdef CONFIG_PCI
102static inline void pci_dma_burst_advice(struct pci_dev *pdev,
103					enum pci_dma_burst_strategy *strat,
104					unsigned long *strategy_parameter)
105{
106	*strat = PCI_DMA_BURST_INFINITY;
107	*strategy_parameter = ~0UL;
108}
109#endif
110
111#endif /* __KERNEL__ */
112
113/* implement the pci_ DMA API in terms of the generic device dma_ one */
114#include <asm-generic/pci-dma-compat.h>
115
116/* generic pci stuff */
117#include <asm-generic/pci.h>
118
119#endif /* __i386_PCI_H */
120