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