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-rw-r--r--include/asm-xtensa/pci.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/include/asm-xtensa/pci.h b/include/asm-xtensa/pci.h
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1/*
2 * linux/include/asm-xtensa/pci.h
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
9 */
10
11#ifndef _XTENSA_PCI_H
12#define _XTENSA_PCI_H
13
14#ifdef __KERNEL__
15
16/* Can be used to override the logic in pci_scan_bus for skipping
17 * already-configured bus numbers - to be used for buggy BIOSes
18 * or architectures with incomplete PCI setup by the loader
19 */
20
21#define pcibios_assign_all_busses() 0
22
23extern struct pci_controller* pcibios_alloc_controller(void);
24
25extern inline void pcibios_set_master(struct pci_dev *dev)
26{
27 /* No special bus mastering setup handling */
28}
29
30extern inline void pcibios_penalize_isa_irq(int irq)
31{
32 /* We don't do dynamic PCI IRQ allocation */
33}
34
35/* Assume some values. (We should revise them, if necessary) */
36
37#define PCIBIOS_MIN_IO 0x2000
38#define PCIBIOS_MIN_MEM 0x10000000
39
40/* Dynamic DMA mapping stuff.
41 * Xtensa has everything mapped statically like x86.
42 */
43
44#include <linux/types.h>
45#include <linux/slab.h>
46#include <asm/scatterlist.h>
47#include <linux/string.h>
48#include <asm/io.h>
49
50struct pci_dev;
51
52/* The PCI address space does equal the physical memory address space.
53 * The networking and block device layers use this boolean for bounce buffer
54 * decisions.
55 */
56
57#define PCI_DMA_BUS_IS_PHYS (1)
58
59/* pci_unmap_{page,single} is a no-op, 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_ubnmap_len(PTR, LEN_NAME) (0)
65#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
66
67/* We cannot access memory above 4GB */
68#define pci_dac_dma_supported(pci_dev, mask) (0)
69
70/* Map a range of PCI memory or I/O space for a device into user space */
71int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
72 enum pci_mmap_state mmap_state, int write_combine);
73
74/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
75#define HAVE_PCI_MMAP 1
76
77static inline void pcibios_add_platform_entries(struct pci_dev *dev)
78{
79}
80
81#endif /* __KERNEL__ */
82
83/* Implement the pci_ DMA API in terms of the generic device dma_ one */
84#include <asm-generic/pci-dma-compat.h>
85
86/* Generic PCI */
87#include <asm-generic/pci.h>
88
89#endif /* _XTENSA_PCI_H */