blob: f35a4511e7b91c7a0f815b911678f13edc891005 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* pci.h: FR-V specific PCI declarations
2 *
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 * - Derived from include/asm-m68k/pci.h
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13#ifndef ASM_PCI_H
14#define ASM_PCI_H
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/mm.h>
17#include <asm/scatterlist.h>
18#include <asm-generic/pci-dma-compat.h>
19#include <asm-generic/pci.h>
20
21struct pci_dev;
22
23#define pcibios_assign_all_busses() 0
24
25static inline void pcibios_add_platform_entries(struct pci_dev *dev)
26{
27}
28
29extern void pcibios_set_master(struct pci_dev *dev);
30
31extern void pcibios_penalize_isa_irq(int irq);
32
33#ifdef CONFIG_MMU
Al Viroa5da7d32005-10-21 03:21:18 -040034extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -070035extern void consistent_free(void *vaddr);
36extern void consistent_sync(void *vaddr, size_t size, int direction);
37extern void consistent_sync_page(struct page *page, unsigned long offset,
38 size_t size, int direction);
39#endif
40
41extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
42 dma_addr_t *dma_handle);
43
44extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
45 void *vaddr, dma_addr_t dma_handle);
46
47/* This is always fine. */
48#define pci_dac_dma_supported(pci_dev, mask) (1)
49
50/* Return the index of the PCI controller for device PDEV. */
51#define pci_controller_num(PDEV) (0)
52
53/* The PCI address space does equal the physical memory
54 * address space. The networking and block device layers use
55 * this boolean for bounce buffer decisions.
56 */
57#define PCI_DMA_BUS_IS_PHYS (1)
58
David Howells41be6ae2006-01-08 01:01:25 -080059/* pci_unmap_{page,single} is a nop so... */
60#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
61#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
62#define pci_unmap_addr(PTR, ADDR_NAME) (0)
63#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
64#define pci_unmap_len(PTR, LEN_NAME) (0)
65#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
66
Andrew Mortonbb4a61b2005-06-06 23:07:46 -070067#ifdef CONFIG_PCI
David S. Millere24c2d92005-06-02 12:55:50 -070068static inline void pci_dma_burst_advice(struct pci_dev *pdev,
69 enum pci_dma_burst_strategy *strat,
70 unsigned long *strategy_parameter)
71{
72 *strat = PCI_DMA_BURST_INFINITY;
73 *strategy_parameter = ~0UL;
74}
Andrew Mortonbb4a61b2005-06-06 23:07:46 -070075#endif
David S. Millere24c2d92005-06-02 12:55:50 -070076
Linus Torvalds1da177e2005-04-16 15:20:36 -070077/*
78 * These are pretty much arbitary with the CoMEM implementation.
79 * We have the whole address space to ourselves.
80 */
81#define PCIBIOS_MIN_IO 0x100
82#define PCIBIOS_MIN_MEM 0x00010000
83
84/* Make physical memory consistent for a single
85 * streaming mode DMA translation after a transfer.
86 *
87 * If you perform a pci_map_single() but wish to interrogate the
88 * buffer using the cpu, yet do not wish to teardown the PCI dma
89 * mapping, you must call this function before doing so. At the
90 * next point you give the PCI dma address back to the card, the
91 * device again owns the buffer.
92 */
93static inline void pci_dma_sync_single(struct pci_dev *hwdev,
94 dma_addr_t dma_handle,
95 size_t size, int direction)
96{
97 if (direction == PCI_DMA_NONE)
98 BUG();
99
100 frv_cache_wback_inv((unsigned long)bus_to_virt(dma_handle),
101 (unsigned long)bus_to_virt(dma_handle) + size);
102}
103
104/* Make physical memory consistent for a set of streaming
105 * mode DMA translations after a transfer.
106 *
107 * The same as pci_dma_sync_single but for a scatter-gather list,
108 * same rules and usage.
109 */
110static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
111 struct scatterlist *sg,
112 int nelems, int direction)
113{
114 int i;
115
116 if (direction == PCI_DMA_NONE)
117 BUG();
118
119 for (i = 0; i < nelems; i++)
120 frv_cache_wback_inv(sg_dma_address(&sg[i]),
121 sg_dma_address(&sg[i])+sg_dma_len(&sg[i]));
122}
123
124
125#endif