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
35/*
36 * I/O routine helpers
37 */
38#if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
39#define PCI_IO_AREA		0xFE400000
40#define PCI_IO_SIZE		0x00400000
41#else
42#define PCI_IO_AREA		0xFE240000
43#define PCI_IO_SIZE		0X00040000
44#endif
45
46#define PCI_MEM_SIZE		0x01000000
47
48#define SH4_PCIIOBR_MASK	0xFFFC0000
49#define pci_ioaddr(addr)	(PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK))
50
51#if defined(CONFIG_PCI)
52#define is_pci_ioaddr(port)		\
53	(((port) >= PCIBIOS_MIN_IO) &&	\
54	 ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE)))
55#define is_pci_memaddr(port)		\
56	(((port) >= PCIBIOS_MIN_MEM) &&	\
57	 ((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE)))
58#else
59#define is_pci_ioaddr(port)	(0)
60#define is_pci_memaddr(port)	(0)
61#endif
62
63struct pci_dev;
64
65extern void pcibios_set_master(struct pci_dev *dev);
66
67static inline void pcibios_penalize_isa_irq(int irq, int active)
68{
69	/* We don't do dynamic PCI IRQ allocation */
70}
71
72/* Dynamic DMA mapping stuff.
73 * SuperH has everything mapped statically like x86.
74 */
75
76/* The PCI address space does equal the physical memory
77 * address space.  The networking and block device layers use
78 * this boolean for bounce buffer decisions.
79 */
80#define PCI_DMA_BUS_IS_PHYS	(1)
81
82#include <linux/types.h>
83#include <linux/slab.h>
84#include <asm/scatterlist.h>
85#include <linux/string.h>
86#include <asm/io.h>
87
88/* pci_unmap_{single,page} being a nop depends upon the
89 * configuration.
90 */
91#ifdef CONFIG_SH_PCIDMA_NONCOHERENT
92#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)	\
93	dma_addr_t ADDR_NAME;
94#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)		\
95	__u32 LEN_NAME;
96#define pci_unmap_addr(PTR, ADDR_NAME)			\
97	((PTR)->ADDR_NAME)
98#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)		\
99	(((PTR)->ADDR_NAME) = (VAL))
100#define pci_unmap_len(PTR, LEN_NAME)			\
101	((PTR)->LEN_NAME)
102#define pci_unmap_len_set(PTR, LEN_NAME, VAL)		\
103	(((PTR)->LEN_NAME) = (VAL))
104#else
105#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
106#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
107#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
108#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
109#define pci_unmap_len(PTR, LEN_NAME)		(0)
110#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
111#endif
112
113/* Not supporting more than 32-bit PCI bus addresses now, but
114 * must satisfy references to this function.  Change if needed.
115 */
116#define pci_dac_dma_supported(pci_dev, mask) (0)
117
118#ifdef CONFIG_PCI
119static inline void pci_dma_burst_advice(struct pci_dev *pdev,
120					enum pci_dma_burst_strategy *strat,
121					unsigned long *strategy_parameter)
122{
123	*strat = PCI_DMA_BURST_INFINITY;
124	*strategy_parameter = ~0UL;
125}
126#endif
127
128/* Board-specific fixup routines. */
129void pcibios_fixup(void);
130int pcibios_init_platform(void);
131int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
132
133#ifdef CONFIG_PCI_AUTO
134int pciauto_assign_resources(int busno, struct pci_channel *hose);
135#endif
136
137static inline void pcibios_add_platform_entries(struct pci_dev *dev)
138{
139}
140
141#endif /* __KERNEL__ */
142
143/* generic pci stuff */
144#include <asm-generic/pci.h>
145
146/* generic DMA-mapping stuff */
147#include <asm-generic/pci-dma-compat.h>
148
149#endif /* __ASM_SH_PCI_H */
150