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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  */
19 struct 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  */
30 extern 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 #elif defined(CONFIG_CPU_SH5)
42 extern unsigned long PCI_IO_AREA;
43 #define PCI_IO_SIZE		0x00010000
44 #else
45 #define PCI_IO_AREA		0xFE240000
46 #define PCI_IO_SIZE		0x00040000
47 #endif
48 
49 #define PCI_MEM_SIZE		0x01000000
50 
51 #define SH4_PCIIOBR_MASK	0xFFFC0000
52 #define pci_ioaddr(addr)	(PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK))
53 
54 #if defined(CONFIG_PCI)
55 #define is_pci_ioaddr(port)		\
56 	(((port) >= PCIBIOS_MIN_IO) &&	\
57 	 ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE)))
58 #define is_pci_memaddr(port)		\
59 	(((port) >= PCIBIOS_MIN_MEM) &&	\
60 	 ((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE)))
61 #else
62 #define is_pci_ioaddr(port)	(0)
63 #define is_pci_memaddr(port)	(0)
64 #endif
65 
66 struct pci_dev;
67 
68 extern void pcibios_set_master(struct pci_dev *dev);
69 
pcibios_penalize_isa_irq(int irq,int active)70 static inline void pcibios_penalize_isa_irq(int irq, int active)
71 {
72 	/* We don't do dynamic PCI IRQ allocation */
73 }
74 
75 /* Dynamic DMA mapping stuff.
76  * SuperH has everything mapped statically like x86.
77  */
78 
79 /* The PCI address space does equal the physical memory
80  * address space.  The networking and block device layers use
81  * this boolean for bounce buffer decisions.
82  */
83 #define PCI_DMA_BUS_IS_PHYS	(1)
84 
85 #include <linux/types.h>
86 #include <linux/slab.h>
87 #include <asm/scatterlist.h>
88 #include <linux/string.h>
89 #include <asm/io.h>
90 
91 /* pci_unmap_{single,page} being a nop depends upon the
92  * configuration.
93  */
94 #ifdef CONFIG_SH_PCIDMA_NONCOHERENT
95 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)	\
96 	dma_addr_t ADDR_NAME;
97 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)		\
98 	__u32 LEN_NAME;
99 #define pci_unmap_addr(PTR, ADDR_NAME)			\
100 	((PTR)->ADDR_NAME)
101 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)		\
102 	(((PTR)->ADDR_NAME) = (VAL))
103 #define pci_unmap_len(PTR, LEN_NAME)			\
104 	((PTR)->LEN_NAME)
105 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)		\
106 	(((PTR)->LEN_NAME) = (VAL))
107 #else
108 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
109 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
110 #define pci_unmap_addr(PTR, ADDR_NAME)		(0)
111 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
112 #define pci_unmap_len(PTR, LEN_NAME)		(0)
113 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
114 #endif
115 
116 #ifdef CONFIG_PCI
pci_dma_burst_advice(struct pci_dev * pdev,enum pci_dma_burst_strategy * strat,unsigned long * strategy_parameter)117 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
118 					enum pci_dma_burst_strategy *strat,
119 					unsigned long *strategy_parameter)
120 {
121 	*strat = PCI_DMA_BURST_INFINITY;
122 	*strategy_parameter = ~0UL;
123 }
124 #endif
125 
126 /* Board-specific fixup routines. */
127 void pcibios_fixup(void);
128 int pcibios_init_platform(void);
129 int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
130 
131 #ifdef CONFIG_PCI_AUTO
132 int pciauto_assign_resources(int busno, struct pci_channel *hose);
133 #endif
134 
135 #endif /* __KERNEL__ */
136 
137 /* generic pci stuff */
138 #include <asm-generic/pci.h>
139 
140 /* generic DMA-mapping stuff */
141 #include <asm-generic/pci-dma-compat.h>
142 
143 #endif /* __ASM_SH_PCI_H */
144 
145