6 #include <asm/virtconvert.h>
8 #if defined(CONFIG_H83007) || defined(CONFIG_H83068)
9 #include <asm/regs306x.h>
10 #elif defined(CONFIG_H8S2678)
11 #include <asm/regs267x.h>
13 #error UNKNOWN CPU TYPE
18 * These are for ISA/PCI shared memory _only_ and should never be used
19 * on any other type of memory, including Zorro memory. They are meant to
20 * access the bus in the bus byte order which is little-endian!.
22 * readX/writeX() are used to access memory mapped devices. On some
23 * architectures the memory mapped IO stuff needs to be accessed
24 * differently. On the m68k architecture, we just read/write the
25 * memory location directly.
27 /* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
28 * two accesses to memory, which may be undesireable for some devices.
32 * swap functions are sometimes needed to interface little-endian hardware
35 static inline unsigned short _swapw(volatile unsigned short v
)
37 #ifndef H8300_IO_NOSWAP
39 __asm__("xor.b %w0,%x0\n\t"
50 static inline unsigned long _swapl(volatile unsigned long v
)
52 #ifndef H8300_IO_NOSWAP
54 __asm__("xor.b %w0,%x0\n\t"
72 ({ unsigned char __v = \
73 *(volatile unsigned char *)((unsigned long)(addr) & 0x00ffffff); \
76 ({ unsigned short __v = \
77 *(volatile unsigned short *)((unsigned long)(addr) & 0x00ffffff); \
80 ({ unsigned long __v = \
81 *(volatile unsigned long *)((unsigned long)(addr) & 0x00ffffff); \
84 #define writeb(b,addr) (void)((*(volatile unsigned char *) \
85 ((unsigned long)(addr) & 0x00ffffff)) = (b))
86 #define writew(b,addr) (void)((*(volatile unsigned short *) \
87 ((unsigned long)(addr) & 0x00ffffff)) = (b))
88 #define writel(b,addr) (void)((*(volatile unsigned long *) \
89 ((unsigned long)(addr) & 0x00ffffff)) = (b))
90 #define readb_relaxed(addr) readb(addr)
91 #define readw_relaxed(addr) readw(addr)
92 #define readl_relaxed(addr) readl(addr)
94 #define __raw_readb readb
95 #define __raw_readw readw
96 #define __raw_readl readl
97 #define __raw_writeb writeb
98 #define __raw_writew writew
99 #define __raw_writel writel
101 static inline int h8300_buswidth(unsigned int addr
)
103 return (*(volatile unsigned char *)ABWCR
& (1 << ((addr
>> 21) & 7))) == 0;
106 static inline void io_outsb(unsigned int addr
, const void *buf
, int len
)
108 volatile unsigned char *ap_b
= (volatile unsigned char *) addr
;
109 volatile unsigned short *ap_w
= (volatile unsigned short *) addr
;
110 unsigned char *bp
= (unsigned char *) buf
;
112 if(h8300_buswidth(addr
) && (addr
& 1)) {
121 static inline void io_outsw(unsigned int addr
, const void *buf
, int len
)
123 volatile unsigned short *ap
= (volatile unsigned short *) addr
;
124 unsigned short *bp
= (unsigned short *) buf
;
129 static inline void io_outsl(unsigned int addr
, const void *buf
, int len
)
131 volatile unsigned long *ap
= (volatile unsigned long *) addr
;
132 unsigned long *bp
= (unsigned long *) buf
;
137 static inline void io_outsw_noswap(unsigned int addr
, const void *buf
, int len
)
139 volatile unsigned short *ap
= (volatile unsigned short *) addr
;
140 unsigned short *bp
= (unsigned short *) buf
;
145 static inline void io_outsl_noswap(unsigned int addr
, const void *buf
, int len
)
147 volatile unsigned long *ap
= (volatile unsigned long *) addr
;
148 unsigned long *bp
= (unsigned long *) buf
;
153 static inline void io_insb(unsigned int addr
, void *buf
, int len
)
155 volatile unsigned char *ap_b
;
156 volatile unsigned short *ap_w
;
157 unsigned char *bp
= (unsigned char *) buf
;
159 if(h8300_buswidth(addr
)) {
160 ap_w
= (volatile unsigned short *)(addr
& ~1);
162 *bp
++ = *ap_w
& 0xff;
164 ap_b
= (volatile unsigned char *)addr
;
170 static inline void io_insw(unsigned int addr
, void *buf
, int len
)
172 volatile unsigned short *ap
= (volatile unsigned short *) addr
;
173 unsigned short *bp
= (unsigned short *) buf
;
178 static inline void io_insl(unsigned int addr
, void *buf
, int len
)
180 volatile unsigned long *ap
= (volatile unsigned long *) addr
;
181 unsigned long *bp
= (unsigned long *) buf
;
186 static inline void io_insw_noswap(unsigned int addr
, void *buf
, int len
)
188 volatile unsigned short *ap
= (volatile unsigned short *) addr
;
189 unsigned short *bp
= (unsigned short *) buf
;
194 static inline void io_insl_noswap(unsigned int addr
, void *buf
, int len
)
196 volatile unsigned long *ap
= (volatile unsigned long *) addr
;
197 unsigned long *bp
= (unsigned long *) buf
;
203 * make the short names macros so specific devices
204 * can override them as required
207 #define memset_io(a,b,c) memset((void *)(a),(b),(c))
208 #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
209 #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
213 #define inb(addr) ((h8300_buswidth(addr))?readw((addr) & ~1) & 0xff:readb(addr))
214 #define inw(addr) _swapw(readw(addr))
215 #define inl(addr) _swapl(readl(addr))
216 #define outb(x,addr) ((void)((h8300_buswidth(addr) && \
217 ((addr) & 1))?writew(x,(addr) & ~1):writeb(x,addr)))
218 #define outw(x,addr) ((void) writew(_swapw(x),addr))
219 #define outl(x,addr) ((void) writel(_swapl(x),addr))
221 #define inb_p(addr) inb(addr)
222 #define inw_p(addr) inw(addr)
223 #define inl_p(addr) inl(addr)
224 #define outb_p(x,addr) outb(x,addr)
225 #define outw_p(x,addr) outw(x,addr)
226 #define outl_p(x,addr) outl(x,addr)
228 #define outsb(a,b,l) io_outsb(a,b,l)
229 #define outsw(a,b,l) io_outsw(a,b,l)
230 #define outsl(a,b,l) io_outsl(a,b,l)
232 #define insb(a,b,l) io_insb(a,b,l)
233 #define insw(a,b,l) io_insw(a,b,l)
234 #define insl(a,b,l) io_insl(a,b,l)
236 #define IO_SPACE_LIMIT 0xffffff
239 /* Values for nocacheflag and cmode */
240 #define IOMAP_FULL_CACHING 0
241 #define IOMAP_NOCACHE_SER 1
242 #define IOMAP_NOCACHE_NONSER 2
243 #define IOMAP_WRITETHROUGH 3
245 extern void *__ioremap(unsigned long physaddr
, unsigned long size
, int cacheflag
);
246 extern void __iounmap(void *addr
, unsigned long size
);
248 static inline void *ioremap(unsigned long physaddr
, unsigned long size
)
250 return __ioremap(physaddr
, size
, IOMAP_NOCACHE_SER
);
252 static inline void *ioremap_nocache(unsigned long physaddr
, unsigned long size
)
254 return __ioremap(physaddr
, size
, IOMAP_NOCACHE_SER
);
256 static inline void *ioremap_writethrough(unsigned long physaddr
, unsigned long size
)
258 return __ioremap(physaddr
, size
, IOMAP_WRITETHROUGH
);
260 static inline void *ioremap_fullcache(unsigned long physaddr
, unsigned long size
)
262 return __ioremap(physaddr
, size
, IOMAP_FULL_CACHING
);
265 extern void iounmap(void *addr
);
269 #define dma_cache_inv(_start,_size) do { } while (0)
270 #define dma_cache_wback(_start,_size) do { } while (0)
271 #define dma_cache_wback_inv(_start,_size) do { } while (0)
273 /* H8/300 internal I/O functions */
274 static __inline__
unsigned char ctrl_inb(unsigned long addr
)
276 return *(volatile unsigned char*)addr
;
279 static __inline__
unsigned short ctrl_inw(unsigned long addr
)
281 return *(volatile unsigned short*)addr
;
284 static __inline__
unsigned long ctrl_inl(unsigned long addr
)
286 return *(volatile unsigned long*)addr
;
289 static __inline__
void ctrl_outb(unsigned char b
, unsigned long addr
)
291 *(volatile unsigned char*)addr
= b
;
294 static __inline__
void ctrl_outw(unsigned short b
, unsigned long addr
)
296 *(volatile unsigned short*)addr
= b
;
299 static __inline__
void ctrl_outl(unsigned long b
, unsigned long addr
)
301 *(volatile unsigned long*)addr
= b
;
304 /* Pages to physical address... */
305 #define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
306 #define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT)
309 * Macros used for converting between virtual and physical mappings.
311 #define mm_ptov(vaddr) ((void *) (vaddr))
312 #define mm_vtop(vaddr) ((unsigned long) (vaddr))
313 #define phys_to_virt(vaddr) ((void *) (vaddr))
314 #define virt_to_phys(vaddr) ((unsigned long) (vaddr))
316 #define virt_to_bus virt_to_phys
317 #define bus_to_virt phys_to_virt
320 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
323 #define xlate_dev_mem_ptr(p) __va(p)
326 * Convert a virtual cached pointer to an uncached pointer
328 #define xlate_dev_kmem_ptr(p) p
330 #endif /* __KERNEL__ */
332 #endif /* _H8300_IO_H */
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