aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-ppc/pci.h
blob: d2442cd72a5961ac923a0ac789d3d321808b3fc7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
#ifndef __PPC_PCI_H
#define __PPC_PCI_H
#ifdef __KERNEL__

#include <linux/types.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <asm/scatterlist.h>
#include <asm/io.h>
#include <asm/pci-bridge.h>
#include <asm-generic/pci-dma-compat.h>

struct pci_dev;

/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
#define IOBASE_BRIDGE_NUMBER	0
#define IOBASE_MEMORY		1
#define IOBASE_IO		2
#define IOBASE_ISA_IO		3
#define IOBASE_ISA_MEM		4

/*
 * Set this to 1 if you want the kernel to re-assign all PCI
 * bus numbers
 */
extern int pci_assign_all_buses;

#define pcibios_assign_all_busses()	(pci_assign_all_buses)
#define pcibios_scan_all_fns(a, b)	0

#define PCIBIOS_MIN_IO		0x1000
#define PCIBIOS_MIN_MEM		0x10000000

extern inline void pcibios_set_master(struct pci_dev *dev)
{
	/* No special bus mastering setup handling */
}

extern inline void pcibios_penalize_isa_irq(int irq, int active)
{
	/* We don't do dynamic PCI IRQ allocation */
}

extern unsigned long pci_resource_to_bus(struct pci_dev *pdev, struct resource *res);

/*
 * The PCI bus bridge can translate addresses issued by the processor(s)
 * into a different address on the PCI bus.  On 32-bit cpus, we assume
 * this mapping is 1-1, but on 64-bit systems it often isn't.
 *
 * Obsolete ! Drivers should now use pci_resource_to_bus
 */
extern unsigned long phys_to_bus(unsigned long pa);
extern unsigned long pci_phys_to_bus(unsigned long pa, int busnr);
extern unsigned long pci_bus_to_phys(unsigned int ba, int busnr);

/* The PCI address space does equal the physical memory
 * address space.  The networking and block device layers use
 * this boolean for bounce buffer decisions.
 */
#define PCI_DMA_BUS_IS_PHYS     (1)

#ifdef CONFIG_NOT_COHERENT_CACHE
/*
 * pci_unmap_{page,single} are NOPs but pci_dma_sync_single_for_cpu()
 * and so on are not, so...
 */

#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)	\
	dma_addr_t ADDR_NAME;
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)		\
	__u32 LEN_NAME;
#define pci_unmap_addr(PTR, ADDR_NAME)			\
	((PTR)->ADDR_NAME)
#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)		\
	(((PTR)->ADDR_NAME) = (VAL))
#define pci_unmap_len(PTR, LEN_NAME)			\
	((PTR)->LEN_NAME)
#define pci_unmap_len_set(PTR, LEN_NAME, VAL)		\
	(((PTR)->LEN_NAME) = (VAL))

#else /* coherent */

/* pci_unmap_{page,single} is a nop so... */
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
#define pci_unmap_len(PTR, LEN_NAME)		(0)
#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)

#endif /* CONFIG_NOT_COHERENT_CACHE */

#ifdef CONFIG_PCI
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
					enum pci_dma_burst_strategy *strat,
					unsigned long *strategy_parameter)
{
	*strat = PCI_DMA_BURST_INFINITY;
	*strategy_parameter = ~0UL;
}
#endif

/* Return the index of the PCI controller for device PDEV. */
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

/* Set the name of the bus as it appears in /proc/bus/pci */
static inline int pci_proc_domain(struct pci_bus *bus)
{
	return 0;
}

/* Map a range of PCI memory or I/O space for a device into user space */
int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
			enum pci_mmap_state mmap_state, int write_combine);

/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
#define HAVE_PCI_MMAP	1

extern void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
			struct resource *res);

extern void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
			struct pci_bus_region *region);

static inline struct resource *
pcibios_select_root(struct pci_dev *pdev, struct resource *res)
{
	struct resource *root = NULL;

	if (res->flags & IORESOURCE_IO)
		root = &ioport_resource;
	if (res->flags & IORESOURCE_MEM)
		root = &iomem_resource;

	return root;
}

struct file;
extern pgprot_t	pci_phys_mem_access_prot(struct file *file,
					 unsigned long pfn,
					 unsigned long size,
					 pgprot_t prot);

#define HAVE_ARCH_PCI_RESOURCE_TO_USER
extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
				 const struct resource *rsrc,
				 resource_size_t *start, resource_size_t *end);


#endif	/* __KERNEL__ */

#endif /* __PPC_PCI_H */