fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-blackfin / io.h
blob525179bf43d70368fe1406ee926f70c18ffe5523
1 #ifndef _BFIN_IO_H
2 #define _BFIN_IO_H
4 #ifdef __KERNEL__
6 #ifndef __ASSEMBLY__
7 #include <linux/types.h>
8 #endif
9 #include <linux/compiler.h>
12 * These are for ISA/PCI shared memory _only_ and should never be used
13 * on any other type of memory, including Zorro memory. They are meant to
14 * access the bus in the bus byte order which is little-endian!.
16 * readX/writeX() are used to access memory mapped devices. On some
17 * architectures the memory mapped IO stuff needs to be accessed
18 * differently. On the bfin architecture, we just read/write the
19 * memory location directly.
21 #ifndef __ASSEMBLY__
23 static inline unsigned char readb(const volatile void __iomem *addr)
25 unsigned int val;
26 int tmp;
28 __asm__ __volatile__ ("cli %1;\n\t"
29 "NOP; NOP; SSYNC;\n\t"
30 "%0 = b [%2] (z);\n\t"
31 "sti %1;\n\t"
32 : "=d"(val), "=d"(tmp): "a"(addr)
35 return (unsigned char) val;
38 static inline unsigned short readw(const volatile void __iomem *addr)
40 unsigned int val;
41 int tmp;
43 __asm__ __volatile__ ("cli %1;\n\t"
44 "NOP; NOP; SSYNC;\n\t"
45 "%0 = w [%2] (z);\n\t"
46 "sti %1;\n\t"
47 : "=d"(val), "=d"(tmp): "a"(addr)
50 return (unsigned short) val;
53 static inline unsigned int readl(const volatile void __iomem *addr)
55 unsigned int val;
56 int tmp;
58 __asm__ __volatile__ ("cli %1;\n\t"
59 "NOP; NOP; SSYNC;\n\t"
60 "%0 = [%2];\n\t"
61 "sti %1;\n\t"
62 : "=d"(val), "=d"(tmp): "a"(addr)
64 return val;
67 #endif /* __ASSEMBLY__ */
69 #define writeb(b,addr) (void)((*(volatile unsigned char *) (addr)) = (b))
70 #define writew(b,addr) (void)((*(volatile unsigned short *) (addr)) = (b))
71 #define writel(b,addr) (void)((*(volatile unsigned int *) (addr)) = (b))
73 #define __raw_readb readb
74 #define __raw_readw readw
75 #define __raw_readl readl
76 #define __raw_writeb writeb
77 #define __raw_writew writew
78 #define __raw_writel writel
79 #define memset_io(a,b,c) memset((void *)(a),(b),(c))
80 #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
81 #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
83 #define inb(addr) readb(addr)
84 #define inw(addr) readw(addr)
85 #define inl(addr) readl(addr)
86 #define outb(x,addr) ((void) writeb(x,addr))
87 #define outw(x,addr) ((void) writew(x,addr))
88 #define outl(x,addr) ((void) writel(x,addr))
90 #define inb_p(addr) inb(addr)
91 #define inw_p(addr) inw(addr)
92 #define inl_p(addr) inl(addr)
93 #define outb_p(x,addr) outb(x,addr)
94 #define outw_p(x,addr) outw(x,addr)
95 #define outl_p(x,addr) outl(x,addr)
97 #define ioread8_rep(a,d,c) insb(a,d,c)
98 #define ioread16_rep(a,d,c) insw(a,d,c)
99 #define ioread32_rep(a,d,c) insl(a,d,c)
100 #define iowrite8_rep(a,s,c) outsb(a,s,c)
101 #define iowrite16_rep(a,s,c) outsw(a,s,c)
102 #define iowrite32_rep(a,s,c) outsl(a,s,c)
104 #define ioread8(X) readb(X)
105 #define ioread16(X) readw(X)
106 #define ioread32(X) readl(X)
107 #define iowrite8(val,X) writeb(val,X)
108 #define iowrite16(val,X) writew(val,X)
109 #define iowrite32(val,X) writel(val,X)
111 #define IO_SPACE_LIMIT 0xffffffff
113 /* Values for nocacheflag and cmode */
114 #define IOMAP_NOCACHE_SER 1
116 #ifndef __ASSEMBLY__
118 extern void outsb(unsigned long port, const void *addr, unsigned long count);
119 extern void outsw(unsigned long port, const void *addr, unsigned long count);
120 extern void outsl(unsigned long port, const void *addr, unsigned long count);
122 extern void insb(unsigned long port, void *addr, unsigned long count);
123 extern void insw(unsigned long port, void *addr, unsigned long count);
124 extern void insl(unsigned long port, void *addr, unsigned long count);
126 extern void dma_outsb(unsigned long port, const void *addr, unsigned short count);
127 extern void dma_outsw(unsigned long port, const void *addr, unsigned short count);
128 extern void dma_outsl(unsigned long port, const void *addr, unsigned short count);
130 extern void dma_insb(unsigned long port, void *addr, unsigned short count);
131 extern void dma_insw(unsigned long port, void *addr, unsigned short count);
132 extern void dma_insl(unsigned long port, void *addr, unsigned short count);
135 * Map some physical address range into the kernel address space.
137 static inline void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
138 int cacheflag)
140 return (void __iomem *)physaddr;
144 * Unmap a ioremap()ed region again
146 static inline void iounmap(void *addr)
151 * __iounmap unmaps nearly everything, so be careful
152 * it doesn't free currently pointer/page tables anymore but it
153 * wans't used anyway and might be added later.
155 static inline void __iounmap(void *addr, unsigned long size)
160 * Set new cache mode for some kernel address space.
161 * The caller must push data for that range itself, if such data may already
162 * be in the cache.
164 static inline void kernel_set_cachemode(void *addr, unsigned long size,
165 int cmode)
169 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
171 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
173 static inline void __iomem *ioremap_nocache(unsigned long physaddr,
174 unsigned long size)
176 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
179 extern void blkfin_inv_cache_all(void);
181 #endif
183 #define ioport_map(port, nr) ((void __iomem*)(port))
184 #define ioport_unmap(addr)
186 #define dma_cache_inv(_start,_size) do { blkfin_inv_cache_all();} while (0)
187 #define dma_cache_wback(_start,_size) do { } while (0)
188 #define dma_cache_wback_inv(_start,_size) do { blkfin_inv_cache_all();} while (0)
190 /* Pages to physical address... */
191 #define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
192 #define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT)
194 #define mm_ptov(vaddr) ((void *) (vaddr))
195 #define mm_vtop(vaddr) ((unsigned long) (vaddr))
196 #define phys_to_virt(vaddr) ((void *) (vaddr))
197 #define virt_to_phys(vaddr) ((unsigned long) (vaddr))
199 #define virt_to_bus virt_to_phys
200 #define bus_to_virt phys_to_virt
203 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
204 * access
206 #define xlate_dev_mem_ptr(p) __va(p)
209 * Convert a virtual cached pointer to an uncached pointer
211 #define xlate_dev_kmem_ptr(p) p
213 #endif /* __KERNEL__ */
215 #endif /* _BFIN_IO_H */