1 #ifndef _ASM_POWERPC_IO_H
2 #define _ASM_POWERPC_IO_H
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 /* Check of existence of legacy devices */
13 extern int check_legacy_ioport(unsigned long base_port
);
14 #define PNPBIOS_BASE 0xf000 /* only relevant for PReP */
17 #include <asm-ppc/io.h>
20 #include <linux/compiler.h>
22 #include <asm/byteorder.h>
24 #include <asm/synch.h>
25 #include <asm/delay.h>
27 #include <asm-generic/iomap.h>
29 #define SIO_CONFIG_RA 0x398
30 #define SIO_CONFIG_RD 0x399
34 extern unsigned long isa_io_base
;
35 extern unsigned long pci_io_base
;
37 #ifdef CONFIG_PPC_ISERIES
39 extern int in_8(const volatile unsigned char __iomem
*addr
);
40 extern void out_8(volatile unsigned char __iomem
*addr
, int val
);
41 extern int in_le16(const volatile unsigned short __iomem
*addr
);
42 extern int in_be16(const volatile unsigned short __iomem
*addr
);
43 extern void out_le16(volatile unsigned short __iomem
*addr
, int val
);
44 extern void out_be16(volatile unsigned short __iomem
*addr
, int val
);
45 extern unsigned in_le32(const volatile unsigned __iomem
*addr
);
46 extern unsigned in_be32(const volatile unsigned __iomem
*addr
);
47 extern void out_le32(volatile unsigned __iomem
*addr
, int val
);
48 extern void out_be32(volatile unsigned __iomem
*addr
, int val
);
49 extern unsigned long in_le64(const volatile unsigned long __iomem
*addr
);
50 extern unsigned long in_be64(const volatile unsigned long __iomem
*addr
);
51 extern void out_le64(volatile unsigned long __iomem
*addr
, unsigned long val
);
52 extern void out_be64(volatile unsigned long __iomem
*addr
, unsigned long val
);
54 extern unsigned char __raw_readb(const volatile void __iomem
*addr
);
55 extern unsigned short __raw_readw(const volatile void __iomem
*addr
);
56 extern unsigned int __raw_readl(const volatile void __iomem
*addr
);
57 extern unsigned long __raw_readq(const volatile void __iomem
*addr
);
58 extern void __raw_writeb(unsigned char v
, volatile void __iomem
*addr
);
59 extern void __raw_writew(unsigned short v
, volatile void __iomem
*addr
);
60 extern void __raw_writel(unsigned int v
, volatile void __iomem
*addr
);
61 extern void __raw_writeq(unsigned long v
, volatile void __iomem
*addr
);
63 extern void memset_io(volatile void __iomem
*addr
, int c
, unsigned long n
);
64 extern void memcpy_fromio(void *dest
, const volatile void __iomem
*src
,
66 extern void memcpy_toio(volatile void __iomem
*dest
, const void *src
,
69 #else /* CONFIG_PPC_ISERIES */
71 #define in_8(addr) __in_8((addr))
72 #define out_8(addr, val) __out_8((addr), (val))
73 #define in_le16(addr) __in_le16((addr))
74 #define in_be16(addr) __in_be16((addr))
75 #define out_le16(addr, val) __out_le16((addr), (val))
76 #define out_be16(addr, val) __out_be16((addr), (val))
77 #define in_le32(addr) __in_le32((addr))
78 #define in_be32(addr) __in_be32((addr))
79 #define out_le32(addr, val) __out_le32((addr), (val))
80 #define out_be32(addr, val) __out_be32((addr), (val))
81 #define in_le64(addr) __in_le64((addr))
82 #define in_be64(addr) __in_be64((addr))
83 #define out_le64(addr, val) __out_le64((addr), (val))
84 #define out_be64(addr, val) __out_be64((addr), (val))
86 static inline unsigned char __raw_readb(const volatile void __iomem
*addr
)
88 return *(volatile unsigned char __force
*)addr
;
90 static inline unsigned short __raw_readw(const volatile void __iomem
*addr
)
92 return *(volatile unsigned short __force
*)addr
;
94 static inline unsigned int __raw_readl(const volatile void __iomem
*addr
)
96 return *(volatile unsigned int __force
*)addr
;
98 static inline unsigned long __raw_readq(const volatile void __iomem
*addr
)
100 return *(volatile unsigned long __force
*)addr
;
102 static inline void __raw_writeb(unsigned char v
, volatile void __iomem
*addr
)
104 *(volatile unsigned char __force
*)addr
= v
;
106 static inline void __raw_writew(unsigned short v
, volatile void __iomem
*addr
)
108 *(volatile unsigned short __force
*)addr
= v
;
110 static inline void __raw_writel(unsigned int v
, volatile void __iomem
*addr
)
112 *(volatile unsigned int __force
*)addr
= v
;
114 static inline void __raw_writeq(unsigned long v
, volatile void __iomem
*addr
)
116 *(volatile unsigned long __force
*)addr
= v
;
118 #define memset_io(a,b,c) eeh_memset_io((a),(b),(c))
119 #define memcpy_fromio(a,b,c) eeh_memcpy_fromio((a),(b),(c))
120 #define memcpy_toio(a,b,c) eeh_memcpy_toio((a),(b),(c))
122 #endif /* CONFIG_PPC_ISERIES */
125 * The insw/outsw/insl/outsl macros don't do byte-swapping.
126 * They are only used in practice for transferring buffers which
127 * are arrays of bytes, and byte-swapping is not appropriate in
128 * that case. - paulus */
129 #define insb(port, buf, ns) eeh_insb((port), (buf), (ns))
130 #define insw(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
131 #define insl(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
133 #define outsb(port, buf, ns) _outsb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
134 #define outsw(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
135 #define outsl(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
137 #define readb(addr) eeh_readb(addr)
138 #define readw(addr) eeh_readw(addr)
139 #define readl(addr) eeh_readl(addr)
140 #define readq(addr) eeh_readq(addr)
141 #define writeb(data, addr) eeh_writeb((data), (addr))
142 #define writew(data, addr) eeh_writew((data), (addr))
143 #define writel(data, addr) eeh_writel((data), (addr))
144 #define writeq(data, addr) eeh_writeq((data), (addr))
145 #define inb(port) eeh_inb((unsigned long)port)
146 #define outb(val, port) eeh_outb(val, (unsigned long)port)
147 #define inw(port) eeh_inw((unsigned long)port)
148 #define outw(val, port) eeh_outw(val, (unsigned long)port)
149 #define inl(port) eeh_inl((unsigned long)port)
150 #define outl(val, port) eeh_outl(val, (unsigned long)port)
152 #define readb_relaxed(addr) readb(addr)
153 #define readw_relaxed(addr) readw(addr)
154 #define readl_relaxed(addr) readl(addr)
155 #define readq_relaxed(addr) readq(addr)
157 extern void _insb(volatile u8 __iomem
*port
, void *buf
, long count
);
158 extern void _outsb(volatile u8 __iomem
*port
, const void *buf
, long count
);
159 extern void _insw_ns(volatile u16 __iomem
*port
, void *buf
, long count
);
160 extern void _outsw_ns(volatile u16 __iomem
*port
, const void *buf
, long count
);
161 extern void _insl_ns(volatile u32 __iomem
*port
, void *buf
, long count
);
162 extern void _outsl_ns(volatile u32 __iomem
*port
, const void *buf
, long count
);
164 static inline void mmiowb(void)
166 __asm__
__volatile__ ("sync" : : : "memory");
167 get_paca()->io_sync
= 0;
171 * output pause versions need a delay at least for the
172 * w83c105 ide controller in a p610.
174 #define inb_p(port) inb(port)
175 #define outb_p(val, port) (udelay(1), outb((val), (port)))
176 #define inw_p(port) inw(port)
177 #define outw_p(val, port) (udelay(1), outw((val), (port)))
178 #define inl_p(port) inl(port)
179 #define outl_p(val, port) (udelay(1), outl((val), (port)))
182 #define IO_SPACE_LIMIT ~(0UL)
185 extern int __ioremap_explicit(unsigned long p_addr
, unsigned long v_addr
,
186 unsigned long size
, unsigned long flags
);
187 extern void __iomem
*__ioremap(unsigned long address
, unsigned long size
,
188 unsigned long flags
);
191 * ioremap - map bus memory into CPU space
192 * @address: bus address of the memory
193 * @size: size of the resource to map
195 * ioremap performs a platform specific sequence of operations to
196 * make bus memory CPU accessible via the readb/readw/readl/writeb/
197 * writew/writel functions and the other mmio helpers. The returned
198 * address is not guaranteed to be usable directly as a virtual
201 extern void __iomem
*ioremap(unsigned long address
, unsigned long size
);
203 #define ioremap_nocache(addr, size) ioremap((addr), (size))
204 extern int iounmap_explicit(volatile void __iomem
*addr
, unsigned long size
);
205 extern void iounmap(volatile void __iomem
*addr
);
206 extern void __iomem
* reserve_phb_iospace(unsigned long size
);
209 * virt_to_phys - map virtual addresses to physical
210 * @address: address to remap
212 * The returned physical address is the physical (CPU) mapping for
213 * the memory address given. It is only valid to use this function on
214 * addresses directly mapped or allocated via kmalloc.
216 * This function does not give bus mappings for DMA transfers. In
217 * almost all conceivable cases a device driver should not be using
220 static inline unsigned long virt_to_phys(volatile void * address
)
222 return __pa((unsigned long)address
);
226 * phys_to_virt - map physical address to virtual
227 * @address: address to remap
229 * The returned virtual address is a current CPU mapping for
230 * the memory address given. It is only valid to use this function on
231 * addresses that have a kernel mapping
233 * This function does not handle bus mappings for DMA transfers. In
234 * almost all conceivable cases a device driver should not be using
237 static inline void * phys_to_virt(unsigned long address
)
239 return (void *)__va(address
);
243 * Change "struct page" to physical address.
245 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
247 /* We do NOT want virtual merging, it would put too much pressure on
248 * our iommu allocator. Instead, we want drivers to be smart enough
249 * to coalesce sglists that happen to have been mapped in a contiguous
252 #define BIO_VMERGE_BOUNDARY 0
254 static inline void iosync(void)
256 __asm__
__volatile__ ("sync" : : : "memory");
259 /* Enforce in-order execution of data I/O.
260 * No distinction between read/write on PPC; use eieio for all three.
262 #define iobarrier_rw() eieio()
263 #define iobarrier_r() eieio()
264 #define iobarrier_w() eieio()
267 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
268 * These routines do not perform EEH-related I/O address translation,
269 * and should not be used directly by device drivers. Use inb/readb
272 static inline int __in_8(const volatile unsigned char __iomem
*addr
)
276 __asm__
__volatile__("sync; lbz%U1%X1 %0,%1; twi 0,%0,0; isync"
277 : "=r" (ret
) : "m" (*addr
));
281 static inline void __out_8(volatile unsigned char __iomem
*addr
, int val
)
283 __asm__
__volatile__("sync; stb%U0%X0 %1,%0"
284 : "=m" (*addr
) : "r" (val
));
285 get_paca()->io_sync
= 1;
288 static inline int __in_le16(const volatile unsigned short __iomem
*addr
)
292 __asm__
__volatile__("sync; lhbrx %0,0,%1; twi 0,%0,0; isync"
293 : "=r" (ret
) : "r" (addr
), "m" (*addr
));
297 static inline int __in_be16(const volatile unsigned short __iomem
*addr
)
301 __asm__
__volatile__("sync; lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
302 : "=r" (ret
) : "m" (*addr
));
306 static inline void __out_le16(volatile unsigned short __iomem
*addr
, int val
)
308 __asm__
__volatile__("sync; sthbrx %1,0,%2"
309 : "=m" (*addr
) : "r" (val
), "r" (addr
));
310 get_paca()->io_sync
= 1;
313 static inline void __out_be16(volatile unsigned short __iomem
*addr
, int val
)
315 __asm__
__volatile__("sync; sth%U0%X0 %1,%0"
316 : "=m" (*addr
) : "r" (val
));
317 get_paca()->io_sync
= 1;
320 static inline unsigned __in_le32(const volatile unsigned __iomem
*addr
)
324 __asm__
__volatile__("sync; lwbrx %0,0,%1; twi 0,%0,0; isync"
325 : "=r" (ret
) : "r" (addr
), "m" (*addr
));
329 static inline unsigned __in_be32(const volatile unsigned __iomem
*addr
)
333 __asm__
__volatile__("sync; lwz%U1%X1 %0,%1; twi 0,%0,0; isync"
334 : "=r" (ret
) : "m" (*addr
));
338 static inline void __out_le32(volatile unsigned __iomem
*addr
, int val
)
340 __asm__
__volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr
)
341 : "r" (val
), "r" (addr
));
342 get_paca()->io_sync
= 1;
345 static inline void __out_be32(volatile unsigned __iomem
*addr
, int val
)
347 __asm__
__volatile__("sync; stw%U0%X0 %1,%0"
348 : "=m" (*addr
) : "r" (val
));
349 get_paca()->io_sync
= 1;
352 static inline unsigned long __in_le64(const volatile unsigned long __iomem
*addr
)
354 unsigned long tmp
, ret
;
356 __asm__
__volatile__(
361 "rldimi %0,%1,5*8,1*8\n"
362 "rldimi %0,%1,3*8,2*8\n"
363 "rldimi %0,%1,1*8,3*8\n"
364 "rldimi %0,%1,7*8,4*8\n"
365 "rldicl %1,%1,32,0\n"
366 "rlwimi %0,%1,8,8,31\n"
367 "rlwimi %0,%1,24,16,23\n"
368 : "=r" (ret
) , "=r" (tmp
) : "b" (addr
) , "m" (*addr
));
372 static inline unsigned long __in_be64(const volatile unsigned long __iomem
*addr
)
376 __asm__
__volatile__("sync; ld%U1%X1 %0,%1; twi 0,%0,0; isync"
377 : "=r" (ret
) : "m" (*addr
));
381 static inline void __out_le64(volatile unsigned long __iomem
*addr
, unsigned long val
)
385 __asm__
__volatile__(
386 "rldimi %0,%1,5*8,1*8\n"
387 "rldimi %0,%1,3*8,2*8\n"
388 "rldimi %0,%1,1*8,3*8\n"
389 "rldimi %0,%1,7*8,4*8\n"
390 "rldicl %1,%1,32,0\n"
391 "rlwimi %0,%1,8,8,31\n"
392 "rlwimi %0,%1,24,16,23\n"
395 : "=&r" (tmp
) , "=&r" (val
) : "1" (val
) , "b" (addr
) , "m" (*addr
));
396 get_paca()->io_sync
= 1;
399 static inline void __out_be64(volatile unsigned long __iomem
*addr
, unsigned long val
)
401 __asm__
__volatile__("sync; std%U0%X0 %1,%0" : "=m" (*addr
) : "r" (val
));
402 get_paca()->io_sync
= 1;
409 #define dma_cache_inv(_start,_size) do { } while (0)
410 #define dma_cache_wback(_start,_size) do { } while (0)
411 #define dma_cache_wback_inv(_start,_size) do { } while (0)
415 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
418 #define xlate_dev_mem_ptr(p) __va(p)
421 * Convert a virtual cached pointer to an uncached pointer
423 #define xlate_dev_kmem_ptr(p) p
425 #endif /* __KERNEL__ */
427 #endif /* CONFIG_PPC64 */
428 #endif /* _ASM_POWERPC_IO_H */