blob: 205192c52bb5708507a58939f870136e2a1d7c0b [file] [log] [blame]
David Howellsb920de12008-02-08 04:19:31 -08001/* MN10300 PCI definitions
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#ifndef _ASM_PCI_H
12#define _ASM_PCI_H
13
14#ifdef __KERNEL__
15#include <linux/mm.h> /* for struct page */
16
17#if 0
18#define __pcbdebug(FMT, ADDR, ...) \
19 printk(KERN_DEBUG "PCIBRIDGE[%08x]: "FMT"\n", \
20 (u32)(ADDR), ##__VA_ARGS__)
21
22#define __pcidebug(FMT, BUS, DEVFN, WHERE,...) \
23do { \
24 printk(KERN_DEBUG "PCI[%02x:%02x.%x + %02x]: "FMT"\n", \
25 (BUS)->number, \
26 PCI_SLOT(DEVFN), \
27 PCI_FUNC(DEVFN), \
28 (u32)(WHERE), ##__VA_ARGS__); \
29} while (0)
30
31#else
32#define __pcbdebug(FMT, ADDR, ...) do {} while (0)
33#define __pcidebug(FMT, BUS, DEVFN, WHERE, ...) do {} while (0)
34#endif
35
36/* Can be used to override the logic in pci_scan_bus for skipping
37 * already-configured bus numbers - to be used for buggy BIOSes or
38 * architectures with incomplete PCI setup by the loader */
39
40#ifdef CONFIG_PCI
41#define pcibios_assign_all_busses() 1
42extern void unit_pci_init(void);
43#else
44#define pcibios_assign_all_busses() 0
45#endif
46
47extern unsigned long pci_mem_start;
48#define PCIBIOS_MIN_IO 0xBE000004
49#define PCIBIOS_MIN_MEM 0xB8000000
50
51void pcibios_set_master(struct pci_dev *dev);
52void pcibios_penalize_isa_irq(int irq);
53
54/* Dynamic DMA mapping stuff.
55 * i386 has everything mapped statically.
56 */
57
58#include <linux/types.h>
59#include <linux/slab.h>
60#include <asm/scatterlist.h>
61#include <linux/string.h>
62#include <linux/mm.h>
63#include <asm/io.h>
64
65struct pci_dev;
66
67/* The PCI address space does equal the physical memory
68 * address space. The networking and block device layers use
69 * this boolean for bounce buffer decisions.
70 */
71#define PCI_DMA_BUS_IS_PHYS (1)
72
73
74/* This is always fine. */
75#define pci_dac_dma_supported(pci_dev, mask) (0)
76
77/*
78 * These macros should be used after a pci_map_sg call has been done
79 * to get bus addresses of each of the SG entries and their lengths.
80 * You should only work with the number of sg entries pci_map_sg
81 * returns.
82 */
83#define sg_dma_address(sg) ((sg)->dma_address)
84#define sg_dma_len(sg) ((sg)->length)
85
86/* Return the index of the PCI controller for device. */
87static inline int pci_controller_num(struct pci_dev *dev)
88{
89 return 0;
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,
95 int write_combine);
96
97#endif /* __KERNEL__ */
98
99/* implement the pci_ DMA API in terms of the generic device dma_ one */
100#include <asm-generic/pci-dma-compat.h>
101
102/**
103 * pcibios_resource_to_bus - convert resource to PCI bus address
104 * @dev: device which owns this resource
105 * @region: converted bus-centric region (start,end)
106 * @res: resource to convert
107 *
108 * Convert a resource to a PCI device bus address or bus window.
109 */
110extern void pcibios_resource_to_bus(struct pci_dev *dev,
111 struct pci_bus_region *region,
112 struct resource *res);
113
114extern void pcibios_bus_to_resource(struct pci_dev *dev,
115 struct resource *res,
116 struct pci_bus_region *region);
117
118static inline struct resource *
119pcibios_select_root(struct pci_dev *pdev, struct resource *res)
120{
121 struct resource *root = NULL;
122
123 if (res->flags & IORESOURCE_IO)
124 root = &ioport_resource;
125 if (res->flags & IORESOURCE_MEM)
126 root = &iomem_resource;
127
128 return root;
129}
130
131#define pcibios_scan_all_fns(a, b) 0
132
133#endif /* _ASM_PCI_H */