This source file includes following definitions.
- ioremap_page_range
- ioremap_huge_init
- devm_ioport_map
- devm_ioport_unmap
- pci_remap_cfgspace
- arch_phys_wc_add
- arch_phys_wc_del
- arch_phys_wc_index
- arch_io_reserve_memtype_wc
- arch_io_free_memtype_wc
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6 #ifndef _LINUX_IO_H
7 #define _LINUX_IO_H
8
9 #include <linux/types.h>
10 #include <linux/init.h>
11 #include <linux/bug.h>
12 #include <linux/err.h>
13 #include <asm/io.h>
14 #include <asm/page.h>
15
16 struct device;
17 struct resource;
18
19 __visible void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
20 void __ioread32_copy(void *to, const void __iomem *from, size_t count);
21 void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
22
23 #ifdef CONFIG_MMU
24 int ioremap_page_range(unsigned long addr, unsigned long end,
25 phys_addr_t phys_addr, pgprot_t prot);
26 #else
27 static inline int ioremap_page_range(unsigned long addr, unsigned long end,
28 phys_addr_t phys_addr, pgprot_t prot)
29 {
30 return 0;
31 }
32 #endif
33
34 #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
35 void __init ioremap_huge_init(void);
36 int arch_ioremap_p4d_supported(void);
37 int arch_ioremap_pud_supported(void);
38 int arch_ioremap_pmd_supported(void);
39 #else
40 static inline void ioremap_huge_init(void) { }
41 #endif
42
43
44
45
46 #ifdef CONFIG_HAS_IOPORT_MAP
47 void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
48 unsigned int nr);
49 void devm_ioport_unmap(struct device *dev, void __iomem *addr);
50 #else
51 static inline void __iomem *devm_ioport_map(struct device *dev,
52 unsigned long port,
53 unsigned int nr)
54 {
55 return NULL;
56 }
57
58 static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr)
59 {
60 }
61 #endif
62
63 #define IOMEM_ERR_PTR(err) (__force void __iomem *)ERR_PTR(err)
64
65 void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
66 resource_size_t size);
67 void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset,
68 resource_size_t size);
69 void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
70 resource_size_t size);
71 void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset,
72 resource_size_t size);
73 void devm_iounmap(struct device *dev, void __iomem *addr);
74 int check_signature(const volatile void __iomem *io_addr,
75 const unsigned char *signature, int length);
76 void devm_ioremap_release(struct device *dev, void *res);
77
78 void *devm_memremap(struct device *dev, resource_size_t offset,
79 size_t size, unsigned long flags);
80 void devm_memunmap(struct device *dev, void *addr);
81
82 void *__devm_memremap_pages(struct device *dev, struct resource *res);
83
84 #ifdef CONFIG_PCI
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94
95 #ifndef pci_remap_cfgspace
96 #define pci_remap_cfgspace pci_remap_cfgspace
97 static inline void __iomem *pci_remap_cfgspace(phys_addr_t offset,
98 size_t size)
99 {
100 return ioremap_nocache(offset, size);
101 }
102 #endif
103 #endif
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109
110 #ifndef arch_has_dev_port
111 #define arch_has_dev_port() (1)
112 #endif
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124
125 #ifndef arch_phys_wc_add
126 static inline int __must_check arch_phys_wc_add(unsigned long base,
127 unsigned long size)
128 {
129 return 0;
130 }
131
132 static inline void arch_phys_wc_del(int handle)
133 {
134 }
135
136 #define arch_phys_wc_add arch_phys_wc_add
137 #ifndef arch_phys_wc_index
138 static inline int arch_phys_wc_index(int handle)
139 {
140 return -1;
141 }
142 #define arch_phys_wc_index arch_phys_wc_index
143 #endif
144 #endif
145
146 enum {
147
148 MEMREMAP_WB = 1 << 0,
149 MEMREMAP_WT = 1 << 1,
150 MEMREMAP_WC = 1 << 2,
151 MEMREMAP_ENC = 1 << 3,
152 MEMREMAP_DEC = 1 << 4,
153 };
154
155 void *memremap(resource_size_t offset, size_t size, unsigned long flags);
156 void memunmap(void *addr);
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166
167 #ifndef arch_io_reserve_memtype_wc
168 static inline int arch_io_reserve_memtype_wc(resource_size_t base,
169 resource_size_t size)
170 {
171 return 0;
172 }
173
174 static inline void arch_io_free_memtype_wc(resource_size_t base,
175 resource_size_t size)
176 {
177 }
178 #endif
179
180 #endif