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
);
16 #include <asm-ppc/io.h>
19 #include <linux/compiler.h>
21 #include <asm/byteorder.h>
22 #ifdef CONFIG_PPC_ISERIES
23 #include <asm/iseries/iseries_io.h>
25 #include <asm/synch.h>
26 #include <asm/delay.h>
28 #include <asm-generic/iomap.h>
30 #define __ide_mm_insw(p, a, c) _insw_ns((volatile u16 __iomem *)(p), (a), (c))
31 #define __ide_mm_insl(p, a, c) _insl_ns((volatile u32 __iomem *)(p), (a), (c))
32 #define __ide_mm_outsw(p, a, c) _outsw_ns((volatile u16 __iomem *)(p), (a), (c))
33 #define __ide_mm_outsl(p, a, c) _outsl_ns((volatile u32 __iomem *)(p), (a), (c))
36 #define SIO_CONFIG_RA 0x398
37 #define SIO_CONFIG_RD 0x399
41 extern unsigned long isa_io_base
;
42 extern unsigned long pci_io_base
;
43 extern unsigned long io_page_mask
;
45 #define MAX_ISA_PORT 0x10000
47 #define _IO_IS_VALID(port) ((port) >= MAX_ISA_PORT || (1 << (port>>PAGE_SHIFT)) \
50 #ifdef CONFIG_PPC_ISERIES
51 /* __raw_* accessors aren't supported on iSeries */
52 #define __raw_readb(addr) { BUG(); 0; }
53 #define __raw_readw(addr) { BUG(); 0; }
54 #define __raw_readl(addr) { BUG(); 0; }
55 #define __raw_readq(addr) { BUG(); 0; }
56 #define __raw_writeb(v, addr) { BUG(); 0; }
57 #define __raw_writew(v, addr) { BUG(); 0; }
58 #define __raw_writel(v, addr) { BUG(); 0; }
59 #define __raw_writeq(v, addr) { BUG(); 0; }
60 #define readb(addr) iSeries_Read_Byte(addr)
61 #define readw(addr) iSeries_Read_Word(addr)
62 #define readl(addr) iSeries_Read_Long(addr)
63 #define writeb(data, addr) iSeries_Write_Byte((data),(addr))
64 #define writew(data, addr) iSeries_Write_Word((data),(addr))
65 #define writel(data, addr) iSeries_Write_Long((data),(addr))
66 #define memset_io(a,b,c) iSeries_memset_io((a),(b),(c))
67 #define memcpy_fromio(a,b,c) iSeries_memcpy_fromio((a), (b), (c))
68 #define memcpy_toio(a,b,c) iSeries_memcpy_toio((a), (b), (c))
70 #define inb(addr) readb(((void __iomem *)(long)(addr)))
71 #define inw(addr) readw(((void __iomem *)(long)(addr)))
72 #define inl(addr) readl(((void __iomem *)(long)(addr)))
73 #define outb(data,addr) writeb(data,((void __iomem *)(long)(addr)))
74 #define outw(data,addr) writew(data,((void __iomem *)(long)(addr)))
75 #define outl(data,addr) writel(data,((void __iomem *)(long)(addr)))
77 * The *_ns versions below don't do byte-swapping.
78 * Neither do the standard versions now, these are just here
81 #define insw_ns(port, buf, ns) _insw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
82 #define insl_ns(port, buf, nl) _insl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
85 static inline unsigned char __raw_readb(const volatile void __iomem
*addr
)
87 return *(volatile unsigned char __force
*)addr
;
89 static inline unsigned short __raw_readw(const volatile void __iomem
*addr
)
91 return *(volatile unsigned short __force
*)addr
;
93 static inline unsigned int __raw_readl(const volatile void __iomem
*addr
)
95 return *(volatile unsigned int __force
*)addr
;
97 static inline unsigned long __raw_readq(const volatile void __iomem
*addr
)
99 return *(volatile unsigned long __force
*)addr
;
101 static inline void __raw_writeb(unsigned char v
, volatile void __iomem
*addr
)
103 *(volatile unsigned char __force
*)addr
= v
;
105 static inline void __raw_writew(unsigned short v
, volatile void __iomem
*addr
)
107 *(volatile unsigned short __force
*)addr
= v
;
109 static inline void __raw_writel(unsigned int v
, volatile void __iomem
*addr
)
111 *(volatile unsigned int __force
*)addr
= v
;
113 static inline void __raw_writeq(unsigned long v
, volatile void __iomem
*addr
)
115 *(volatile unsigned long __force
*)addr
= v
;
117 #define readb(addr) eeh_readb(addr)
118 #define readw(addr) eeh_readw(addr)
119 #define readl(addr) eeh_readl(addr)
120 #define readq(addr) eeh_readq(addr)
121 #define writeb(data, addr) eeh_writeb((data), (addr))
122 #define writew(data, addr) eeh_writew((data), (addr))
123 #define writel(data, addr) eeh_writel((data), (addr))
124 #define writeq(data, addr) eeh_writeq((data), (addr))
125 #define memset_io(a,b,c) eeh_memset_io((a),(b),(c))
126 #define memcpy_fromio(a,b,c) eeh_memcpy_fromio((a),(b),(c))
127 #define memcpy_toio(a,b,c) eeh_memcpy_toio((a),(b),(c))
128 #define inb(port) eeh_inb((unsigned long)port)
129 #define outb(val, port) eeh_outb(val, (unsigned long)port)
130 #define inw(port) eeh_inw((unsigned long)port)
131 #define outw(val, port) eeh_outw(val, (unsigned long)port)
132 #define inl(port) eeh_inl((unsigned long)port)
133 #define outl(val, port) eeh_outl(val, (unsigned long)port)
136 * The insw/outsw/insl/outsl macros don't do byte-swapping.
137 * They are only used in practice for transferring buffers which
138 * are arrays of bytes, and byte-swapping is not appropriate in
139 * that case. - paulus */
140 #define insb(port, buf, ns) eeh_insb((port), (buf), (ns))
141 #define insw(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
142 #define insl(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
143 #define insw_ns(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
144 #define insl_ns(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
146 #define outsb(port, buf, ns) _outsb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
147 #define outsw(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
148 #define outsl(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
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
, int ns
);
158 extern void _outsb(volatile u8 __iomem
*port
, const void *buf
, int ns
);
159 extern void _insw(volatile u16 __iomem
*port
, void *buf
, int ns
);
160 extern void _outsw(volatile u16 __iomem
*port
, const void *buf
, int ns
);
161 extern void _insl(volatile u32 __iomem
*port
, void *buf
, int nl
);
162 extern void _outsl(volatile u32 __iomem
*port
, const void *buf
, int nl
);
163 extern void _insw_ns(volatile u16 __iomem
*port
, void *buf
, int ns
);
164 extern void _outsw_ns(volatile u16 __iomem
*port
, const void *buf
, int ns
);
165 extern void _insl_ns(volatile u32 __iomem
*port
, void *buf
, int nl
);
166 extern void _outsl_ns(volatile u32 __iomem
*port
, const void *buf
, int nl
);
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 * The *_ns versions below don't do byte-swapping.
183 * Neither do the standard versions now, these are just here
186 #define outsw_ns(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
187 #define outsl_ns(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
190 #define IO_SPACE_LIMIT ~(0UL)
193 extern int __ioremap_explicit(unsigned long p_addr
, unsigned long v_addr
,
194 unsigned long size
, unsigned long flags
);
195 extern void __iomem
*__ioremap(unsigned long address
, unsigned long size
,
196 unsigned long flags
);
199 * ioremap - map bus memory into CPU space
200 * @address: bus address of the memory
201 * @size: size of the resource to map
203 * ioremap performs a platform specific sequence of operations to
204 * make bus memory CPU accessible via the readb/readw/readl/writeb/
205 * writew/writel functions and the other mmio helpers. The returned
206 * address is not guaranteed to be usable directly as a virtual
209 extern void __iomem
*ioremap(unsigned long address
, unsigned long size
);
211 #define ioremap_nocache(addr, size) ioremap((addr), (size))
212 extern int iounmap_explicit(volatile void __iomem
*addr
, unsigned long size
);
213 extern void iounmap(volatile void __iomem
*addr
);
214 extern void __iomem
* reserve_phb_iospace(unsigned long size
);
217 * virt_to_phys - map virtual addresses to physical
218 * @address: address to remap
220 * The returned physical address is the physical (CPU) mapping for
221 * the memory address given. It is only valid to use this function on
222 * addresses directly mapped or allocated via kmalloc.
224 * This function does not give bus mappings for DMA transfers. In
225 * almost all conceivable cases a device driver should not be using
228 static inline unsigned long virt_to_phys(volatile void * address
)
230 return __pa((unsigned long)address
);
234 * phys_to_virt - map physical address to virtual
235 * @address: address to remap
237 * The returned virtual address is a current CPU mapping for
238 * the memory address given. It is only valid to use this function on
239 * addresses that have a kernel mapping
241 * This function does not handle bus mappings for DMA transfers. In
242 * almost all conceivable cases a device driver should not be using
245 static inline void * phys_to_virt(unsigned long address
)
247 return (void *)__va(address
);
251 * Change "struct page" to physical address.
253 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
255 /* We do NOT want virtual merging, it would put too much pressure on
256 * our iommu allocator. Instead, we want drivers to be smart enough
257 * to coalesce sglists that happen to have been mapped in a contiguous
260 #define BIO_VMERGE_BOUNDARY 0
262 static inline void iosync(void)
264 __asm__
__volatile__ ("sync" : : : "memory");
267 /* Enforce in-order execution of data I/O.
268 * No distinction between read/write on PPC; use eieio for all three.
270 #define iobarrier_rw() eieio()
271 #define iobarrier_r() eieio()
272 #define iobarrier_w() eieio()
275 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
276 * These routines do not perform EEH-related I/O address translation,
277 * and should not be used directly by device drivers. Use inb/readb
280 static inline int in_8(const volatile unsigned char __iomem
*addr
)
284 __asm__
__volatile__("lbz%U1%X1 %0,%1; twi 0,%0,0; isync"
285 : "=r" (ret
) : "m" (*addr
));
289 static inline void out_8(volatile unsigned char __iomem
*addr
, int val
)
291 __asm__
__volatile__("stb%U0%X0 %1,%0; sync"
292 : "=m" (*addr
) : "r" (val
));
295 static inline int in_le16(const volatile unsigned short __iomem
*addr
)
299 __asm__
__volatile__("lhbrx %0,0,%1; twi 0,%0,0; isync"
300 : "=r" (ret
) : "r" (addr
), "m" (*addr
));
304 static inline int in_be16(const volatile unsigned short __iomem
*addr
)
308 __asm__
__volatile__("lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
309 : "=r" (ret
) : "m" (*addr
));
313 static inline void out_le16(volatile unsigned short __iomem
*addr
, int val
)
315 __asm__
__volatile__("sthbrx %1,0,%2; sync"
316 : "=m" (*addr
) : "r" (val
), "r" (addr
));
319 static inline void out_be16(volatile unsigned short __iomem
*addr
, int val
)
321 __asm__
__volatile__("sth%U0%X0 %1,%0; sync"
322 : "=m" (*addr
) : "r" (val
));
325 static inline unsigned in_le32(const volatile unsigned __iomem
*addr
)
329 __asm__
__volatile__("lwbrx %0,0,%1; twi 0,%0,0; isync"
330 : "=r" (ret
) : "r" (addr
), "m" (*addr
));
334 static inline unsigned in_be32(const volatile unsigned __iomem
*addr
)
338 __asm__
__volatile__("lwz%U1%X1 %0,%1; twi 0,%0,0; isync"
339 : "=r" (ret
) : "m" (*addr
));
343 static inline void out_le32(volatile unsigned __iomem
*addr
, int val
)
345 __asm__
__volatile__("stwbrx %1,0,%2; sync" : "=m" (*addr
)
346 : "r" (val
), "r" (addr
));
349 static inline void out_be32(volatile unsigned __iomem
*addr
, int val
)
351 __asm__
__volatile__("stw%U0%X0 %1,%0; sync"
352 : "=m" (*addr
) : "r" (val
));
355 static inline unsigned long in_le64(const volatile unsigned long __iomem
*addr
)
357 unsigned long tmp
, ret
;
359 __asm__
__volatile__(
363 "rldimi %0,%1,5*8,1*8\n"
364 "rldimi %0,%1,3*8,2*8\n"
365 "rldimi %0,%1,1*8,3*8\n"
366 "rldimi %0,%1,7*8,4*8\n"
367 "rldicl %1,%1,32,0\n"
368 "rlwimi %0,%1,8,8,31\n"
369 "rlwimi %0,%1,24,16,23\n"
370 : "=r" (ret
) , "=r" (tmp
) : "b" (addr
) , "m" (*addr
));
374 static inline unsigned long in_be64(const volatile unsigned long __iomem
*addr
)
378 __asm__
__volatile__("ld%U1%X1 %0,%1; twi 0,%0,0; isync"
379 : "=r" (ret
) : "m" (*addr
));
383 static inline void out_le64(volatile unsigned long __iomem
*addr
, unsigned long val
)
387 __asm__
__volatile__(
388 "rldimi %0,%1,5*8,1*8\n"
389 "rldimi %0,%1,3*8,2*8\n"
390 "rldimi %0,%1,1*8,3*8\n"
391 "rldimi %0,%1,7*8,4*8\n"
392 "rldicl %1,%1,32,0\n"
393 "rlwimi %0,%1,8,8,31\n"
394 "rlwimi %0,%1,24,16,23\n"
397 : "=&r" (tmp
) , "=&r" (val
) : "1" (val
) , "b" (addr
) , "m" (*addr
));
400 static inline void out_be64(volatile unsigned long __iomem
*addr
, unsigned long val
)
402 __asm__
__volatile__("std%U0%X0 %1,%0; sync" : "=m" (*addr
) : "r" (val
));
405 #ifndef CONFIG_PPC_ISERIES
410 * check_signature - find BIOS signatures
411 * @io_addr: mmio address to check
412 * @signature: signature block
413 * @length: length of signature
415 * Perform a signature comparison with the mmio address io_addr. This
416 * address should have been obtained by ioremap.
417 * Returns 1 on a match.
419 static inline int check_signature(const volatile void __iomem
* io_addr
,
420 const unsigned char *signature
, int length
)
423 #ifndef CONFIG_PPC_ISERIES
425 if (readb(io_addr
) != *signature
)
439 #define dma_cache_inv(_start,_size) do { } while (0)
440 #define dma_cache_wback(_start,_size) do { } while (0)
441 #define dma_cache_wback_inv(_start,_size) do { } while (0)
445 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
448 #define xlate_dev_mem_ptr(p) __va(p)
451 * Convert a virtual cached pointer to an uncached pointer
453 #define xlate_dev_kmem_ptr(p) p
455 #endif /* __KERNEL__ */
457 #endif /* CONFIG_PPC64 */
458 #endif /* _ASM_POWERPC_IO_H */