tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __ASM_SH_PCI_H
2#define __ASM_SH_PCI_H
3
4#ifdef __KERNEL__
5
6#include <linux/dma-mapping.h>
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#define pcibios_assign_all_busses() 1
13#define pcibios_scan_all_fns(a, b) 0
14
15/*
16 * A board can define one or more PCI channels that represent built-in (or
17 * external) PCI controllers.
18 */
19struct pci_channel {
20 struct pci_ops *pci_ops;
21 struct resource *io_resource;
22 struct resource *mem_resource;
23 int first_devfn;
24 int last_devfn;
25};
26
27/*
28 * Each board initializes this array and terminates it with a NULL entry.
29 */
30extern struct pci_channel board_pci_channels[];
31
32#define PCIBIOS_MIN_IO board_pci_channels->io_resource->start
33#define PCIBIOS_MIN_MEM board_pci_channels->mem_resource->start
34
35struct pci_dev;
36
37extern void pcibios_set_master(struct pci_dev *dev);
38
39static inline void pcibios_penalize_isa_irq(int irq, int active)
40{
41 /* We don't do dynamic PCI IRQ allocation */
42}
43
44/* Dynamic DMA mapping stuff.
45 * SuperH has everything mapped statically like x86.
46 */
47
48/* The PCI address space does equal the physical memory
49 * address space. The networking and block device layers use
50 * this boolean for bounce buffer decisions.
51 */
52#define PCI_DMA_BUS_IS_PHYS (1)
53
54#include <linux/types.h>
55#include <linux/slab.h>
56#include <asm/scatterlist.h>
57#include <linux/string.h>
58#include <asm/io.h>
59
60/* pci_unmap_{single,page} being a nop depends upon the
61 * configuration.
62 */
63#ifdef CONFIG_SH_PCIDMA_NONCOHERENT
64#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
65 dma_addr_t ADDR_NAME;
66#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
67 __u32 LEN_NAME;
68#define pci_unmap_addr(PTR, ADDR_NAME) \
69 ((PTR)->ADDR_NAME)
70#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
71 (((PTR)->ADDR_NAME) = (VAL))
72#define pci_unmap_len(PTR, LEN_NAME) \
73 ((PTR)->LEN_NAME)
74#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
75 (((PTR)->LEN_NAME) = (VAL))
76#else
77#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
78#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
79#define pci_unmap_addr(PTR, ADDR_NAME) (0)
80#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
81#define pci_unmap_len(PTR, LEN_NAME) (0)
82#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
83#endif
84
85/* Not supporting more than 32-bit PCI bus addresses now, but
86 * must satisfy references to this function. Change if needed.
87 */
88#define pci_dac_dma_supported(pci_dev, mask) (0)
89
90/* These macros should be used after a pci_map_sg call has been done
91 * to get bus addresses of each of the SG entries and their lengths.
92 * You should only work with the number of sg entries pci_map_sg
93 * returns, or alternatively stop on the first sg_dma_len(sg) which
94 * is 0.
95 */
96#define sg_dma_address(sg) (virt_to_bus((sg)->dma_address))
97#define sg_dma_len(sg) ((sg)->length)
98
99#ifdef CONFIG_PCI
100static inline void pci_dma_burst_advice(struct pci_dev *pdev,
101 enum pci_dma_burst_strategy *strat,
102 unsigned long *strategy_parameter)
103{
104 *strat = PCI_DMA_BURST_INFINITY;
105 *strategy_parameter = ~0UL;
106}
107#endif
108
109/* Board-specific fixup routines. */
110extern void pcibios_fixup(void);
111extern void pcibios_fixup_irqs(void);
112
113#ifdef CONFIG_PCI_AUTO
114extern int pciauto_assign_resources(int busno, struct pci_channel *hose);
115#endif
116
117static inline void pcibios_add_platform_entries(struct pci_dev *dev)
118{
119}
120
121#endif /* __KERNEL__ */
122
123/* generic pci stuff */
124#include <asm-generic/pci.h>
125
126/* generic DMA-mapping stuff */
127#include <asm-generic/pci-dma-compat.h>
128
129#endif /* __ASM_SH_PCI_H */
130