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