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authorPaul Mackerras <paulus@samba.org>2005-11-19 04:17:32 -0500
committerPaul Mackerras <paulus@samba.org>2005-11-19 04:17:32 -0500
commit047ea7846565917c4a666635fa1fa4b5c587cd55 (patch)
tree409c8f6ddd1f145fb364a8d6f813febd0c94d06b /include/asm-powerpc/io.h
parent800fc3eeb0eed3bf98d621c0da24d68cabcf6526 (diff)
powerpc: Trivially merge several headers from asm-ppc64 to asm-powerpc
For these, I have just done the lame-o merge where the file ends up looking like: #ifndef CONFIG_PPC64 #include <asm-ppc/foo.h> #else ... contents from asm-ppc64/foo.h #endif so nothing has changed, really, except that we reduce include/asm-ppc64 a bit more. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/io.h')
-rw-r--r--include/asm-powerpc/io.h462
1 files changed, 462 insertions, 0 deletions
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
new file mode 100644
index 000000000000..48938d84d055
--- /dev/null
+++ b/include/asm-powerpc/io.h
@@ -0,0 +1,462 @@
1#ifndef _ASM_POWERPC_IO_H
2#define _ASM_POWERPC_IO_H
3
4/*
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 */
10
11#ifndef CONFIG_PPC64
12#include <asm-ppc/io.h>
13#else
14
15#include <linux/compiler.h>
16#include <asm/page.h>
17#include <asm/byteorder.h>
18#ifdef CONFIG_PPC_ISERIES
19#include <asm/iseries/iseries_io.h>
20#endif
21#include <asm/synch.h>
22#include <asm/delay.h>
23
24#include <asm-generic/iomap.h>
25
26#define __ide_mm_insw(p, a, c) _insw_ns((volatile u16 __iomem *)(p), (a), (c))
27#define __ide_mm_insl(p, a, c) _insl_ns((volatile u32 __iomem *)(p), (a), (c))
28#define __ide_mm_outsw(p, a, c) _outsw_ns((volatile u16 __iomem *)(p), (a), (c))
29#define __ide_mm_outsl(p, a, c) _outsl_ns((volatile u32 __iomem *)(p), (a), (c))
30
31
32#define SIO_CONFIG_RA 0x398
33#define SIO_CONFIG_RD 0x399
34
35#define SLOW_DOWN_IO
36
37extern unsigned long isa_io_base;
38extern unsigned long pci_io_base;
39extern unsigned long io_page_mask;
40
41#define MAX_ISA_PORT 0x10000
42
43#define _IO_IS_VALID(port) ((port) >= MAX_ISA_PORT || (1 << (port>>PAGE_SHIFT)) \
44 & io_page_mask)
45
46#ifdef CONFIG_PPC_ISERIES
47/* __raw_* accessors aren't supported on iSeries */
48#define __raw_readb(addr) { BUG(); 0; }
49#define __raw_readw(addr) { BUG(); 0; }
50#define __raw_readl(addr) { BUG(); 0; }
51#define __raw_readq(addr) { BUG(); 0; }
52#define __raw_writeb(v, addr) { BUG(); 0; }
53#define __raw_writew(v, addr) { BUG(); 0; }
54#define __raw_writel(v, addr) { BUG(); 0; }
55#define __raw_writeq(v, addr) { BUG(); 0; }
56#define readb(addr) iSeries_Read_Byte(addr)
57#define readw(addr) iSeries_Read_Word(addr)
58#define readl(addr) iSeries_Read_Long(addr)
59#define writeb(data, addr) iSeries_Write_Byte((data),(addr))
60#define writew(data, addr) iSeries_Write_Word((data),(addr))
61#define writel(data, addr) iSeries_Write_Long((data),(addr))
62#define memset_io(a,b,c) iSeries_memset_io((a),(b),(c))
63#define memcpy_fromio(a,b,c) iSeries_memcpy_fromio((a), (b), (c))
64#define memcpy_toio(a,b,c) iSeries_memcpy_toio((a), (b), (c))
65
66#define inb(addr) readb(((void __iomem *)(long)(addr)))
67#define inw(addr) readw(((void __iomem *)(long)(addr)))
68#define inl(addr) readl(((void __iomem *)(long)(addr)))
69#define outb(data,addr) writeb(data,((void __iomem *)(long)(addr)))
70#define outw(data,addr) writew(data,((void __iomem *)(long)(addr)))
71#define outl(data,addr) writel(data,((void __iomem *)(long)(addr)))
72/*
73 * The *_ns versions below don't do byte-swapping.
74 * Neither do the standard versions now, these are just here
75 * for older code.
76 */
77#define insw_ns(port, buf, ns) _insw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
78#define insl_ns(port, buf, nl) _insl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
79#else
80
81static inline unsigned char __raw_readb(const volatile void __iomem *addr)
82{
83 return *(volatile unsigned char __force *)addr;
84}
85static inline unsigned short __raw_readw(const volatile void __iomem *addr)
86{
87 return *(volatile unsigned short __force *)addr;
88}
89static inline unsigned int __raw_readl(const volatile void __iomem *addr)
90{
91 return *(volatile unsigned int __force *)addr;
92}
93static inline unsigned long __raw_readq(const volatile void __iomem *addr)
94{
95 return *(volatile unsigned long __force *)addr;
96}
97static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
98{
99 *(volatile unsigned char __force *)addr = v;
100}
101static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
102{
103 *(volatile unsigned short __force *)addr = v;
104}
105static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
106{
107 *(volatile unsigned int __force *)addr = v;
108}
109static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
110{
111 *(volatile unsigned long __force *)addr = v;
112}
113#define readb(addr) eeh_readb(addr)
114#define readw(addr) eeh_readw(addr)
115#define readl(addr) eeh_readl(addr)
116#define readq(addr) eeh_readq(addr)
117#define writeb(data, addr) eeh_writeb((data), (addr))
118#define writew(data, addr) eeh_writew((data), (addr))
119#define writel(data, addr) eeh_writel((data), (addr))
120#define writeq(data, addr) eeh_writeq((data), (addr))
121#define memset_io(a,b,c) eeh_memset_io((a),(b),(c))
122#define memcpy_fromio(a,b,c) eeh_memcpy_fromio((a),(b),(c))
123#define memcpy_toio(a,b,c) eeh_memcpy_toio((a),(b),(c))
124#define inb(port) eeh_inb((unsigned long)port)
125#define outb(val, port) eeh_outb(val, (unsigned long)port)
126#define inw(port) eeh_inw((unsigned long)port)
127#define outw(val, port) eeh_outw(val, (unsigned long)port)
128#define inl(port) eeh_inl((unsigned long)port)
129#define outl(val, port) eeh_outl(val, (unsigned long)port)
130
131/*
132 * The insw/outsw/insl/outsl macros don't do byte-swapping.
133 * They are only used in practice for transferring buffers which
134 * are arrays of bytes, and byte-swapping is not appropriate in
135 * that case. - paulus */
136#define insb(port, buf, ns) eeh_insb((port), (buf), (ns))
137#define insw(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
138#define insl(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
139#define insw_ns(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
140#define insl_ns(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
141
142#define outsb(port, buf, ns) _outsb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
143#define outsw(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
144#define outsl(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
145
146#endif
147
148#define readb_relaxed(addr) readb(addr)
149#define readw_relaxed(addr) readw(addr)
150#define readl_relaxed(addr) readl(addr)
151#define readq_relaxed(addr) readq(addr)
152
153extern void _insb(volatile u8 __iomem *port, void *buf, int ns);
154extern void _outsb(volatile u8 __iomem *port, const void *buf, int ns);
155extern void _insw(volatile u16 __iomem *port, void *buf, int ns);
156extern void _outsw(volatile u16 __iomem *port, const void *buf, int ns);
157extern void _insl(volatile u32 __iomem *port, void *buf, int nl);
158extern void _outsl(volatile u32 __iomem *port, const void *buf, int nl);
159extern void _insw_ns(volatile u16 __iomem *port, void *buf, int ns);
160extern void _outsw_ns(volatile u16 __iomem *port, const void *buf, int ns);
161extern void _insl_ns(volatile u32 __iomem *port, void *buf, int nl);
162extern void _outsl_ns(volatile u32 __iomem *port, const void *buf, int nl);
163
164#define mmiowb()
165
166/*
167 * output pause versions need a delay at least for the
168 * w83c105 ide controller in a p610.
169 */
170#define inb_p(port) inb(port)
171#define outb_p(val, port) (udelay(1), outb((val), (port)))
172#define inw_p(port) inw(port)
173#define outw_p(val, port) (udelay(1), outw((val), (port)))
174#define inl_p(port) inl(port)
175#define outl_p(val, port) (udelay(1), outl((val), (port)))
176
177/*
178 * The *_ns versions below don't do byte-swapping.
179 * Neither do the standard versions now, these are just here
180 * for older code.
181 */
182#define outsw_ns(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
183#define outsl_ns(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
184
185
186#define IO_SPACE_LIMIT ~(0UL)
187
188
189#ifdef __KERNEL__
190extern int __ioremap_explicit(unsigned long p_addr, unsigned long v_addr,
191 unsigned long size, unsigned long flags);
192extern void __iomem *__ioremap(unsigned long address, unsigned long size,
193 unsigned long flags);
194
195/**
196 * ioremap - map bus memory into CPU space
197 * @address: bus address of the memory
198 * @size: size of the resource to map
199 *
200 * ioremap performs a platform specific sequence of operations to
201 * make bus memory CPU accessible via the readb/readw/readl/writeb/
202 * writew/writel functions and the other mmio helpers. The returned
203 * address is not guaranteed to be usable directly as a virtual
204 * address.
205 */
206extern void __iomem *ioremap(unsigned long address, unsigned long size);
207
208#define ioremap_nocache(addr, size) ioremap((addr), (size))
209extern int iounmap_explicit(volatile void __iomem *addr, unsigned long size);
210extern void iounmap(volatile void __iomem *addr);
211extern void __iomem * reserve_phb_iospace(unsigned long size);
212
213/**
214 * virt_to_phys - map virtual addresses to physical
215 * @address: address to remap
216 *
217 * The returned physical address is the physical (CPU) mapping for
218 * the memory address given. It is only valid to use this function on
219 * addresses directly mapped or allocated via kmalloc.
220 *
221 * This function does not give bus mappings for DMA transfers. In
222 * almost all conceivable cases a device driver should not be using
223 * this function
224 */
225static inline unsigned long virt_to_phys(volatile void * address)
226{
227 return __pa((unsigned long)address);
228}
229
230/**
231 * phys_to_virt - map physical address to virtual
232 * @address: address to remap
233 *
234 * The returned virtual address is a current CPU mapping for
235 * the memory address given. It is only valid to use this function on
236 * addresses that have a kernel mapping
237 *
238 * This function does not handle bus mappings for DMA transfers. In
239 * almost all conceivable cases a device driver should not be using
240 * this function
241 */
242static inline void * phys_to_virt(unsigned long address)
243{
244 return (void *)__va(address);
245}
246
247/*
248 * Change "struct page" to physical address.
249 */
250#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
251
252/* We do NOT want virtual merging, it would put too much pressure on
253 * our iommu allocator. Instead, we want drivers to be smart enough
254 * to coalesce sglists that happen to have been mapped in a contiguous
255 * way by the iommu
256 */
257#define BIO_VMERGE_BOUNDARY 0
258
259#endif /* __KERNEL__ */
260
261static inline void iosync(void)
262{
263 __asm__ __volatile__ ("sync" : : : "memory");
264}
265
266/* Enforce in-order execution of data I/O.
267 * No distinction between read/write on PPC; use eieio for all three.
268 */
269#define iobarrier_rw() eieio()
270#define iobarrier_r() eieio()
271#define iobarrier_w() eieio()
272
273/*
274 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
275 * These routines do not perform EEH-related I/O address translation,
276 * and should not be used directly by device drivers. Use inb/readb
277 * instead.
278 */
279static inline int in_8(const volatile unsigned char __iomem *addr)
280{
281 int ret;
282
283 __asm__ __volatile__("lbz%U1%X1 %0,%1; twi 0,%0,0; isync"
284 : "=r" (ret) : "m" (*addr));
285 return ret;
286}
287
288static inline void out_8(volatile unsigned char __iomem *addr, int val)
289{
290 __asm__ __volatile__("stb%U0%X0 %1,%0; sync"
291 : "=m" (*addr) : "r" (val));
292}
293
294static inline int in_le16(const volatile unsigned short __iomem *addr)
295{
296 int ret;
297
298 __asm__ __volatile__("lhbrx %0,0,%1; twi 0,%0,0; isync"
299 : "=r" (ret) : "r" (addr), "m" (*addr));
300 return ret;
301}
302
303static inline int in_be16(const volatile unsigned short __iomem *addr)
304{
305 int ret;
306
307 __asm__ __volatile__("lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
308 : "=r" (ret) : "m" (*addr));
309 return ret;
310}
311
312static inline void out_le16(volatile unsigned short __iomem *addr, int val)
313{
314 __asm__ __volatile__("sthbrx %1,0,%2; sync"
315 : "=m" (*addr) : "r" (val), "r" (addr));
316}
317
318static inline void out_be16(volatile unsigned short __iomem *addr, int val)
319{
320 __asm__ __volatile__("sth%U0%X0 %1,%0; sync"
321 : "=m" (*addr) : "r" (val));
322}
323
324static inline unsigned in_le32(const volatile unsigned __iomem *addr)
325{
326 unsigned ret;
327
328 __asm__ __volatile__("lwbrx %0,0,%1; twi 0,%0,0; isync"
329 : "=r" (ret) : "r" (addr), "m" (*addr));
330 return ret;
331}
332
333static inline unsigned in_be32(const volatile unsigned __iomem *addr)
334{
335 unsigned ret;
336
337 __asm__ __volatile__("lwz%U1%X1 %0,%1; twi 0,%0,0; isync"
338 : "=r" (ret) : "m" (*addr));
339 return ret;
340}
341
342static inline void out_le32(volatile unsigned __iomem *addr, int val)
343{
344 __asm__ __volatile__("stwbrx %1,0,%2; sync" : "=m" (*addr)
345 : "r" (val), "r" (addr));
346}
347
348static inline void out_be32(volatile unsigned __iomem *addr, int val)
349{
350 __asm__ __volatile__("stw%U0%X0 %1,%0; sync"
351 : "=m" (*addr) : "r" (val));
352}
353
354static inline unsigned long in_le64(const volatile unsigned long __iomem *addr)
355{
356 unsigned long tmp, ret;
357
358 __asm__ __volatile__(
359 "ld %1,0(%2)\n"
360 "twi 0,%1,0\n"
361 "isync\n"
362 "rldimi %0,%1,5*8,1*8\n"
363 "rldimi %0,%1,3*8,2*8\n"
364 "rldimi %0,%1,1*8,3*8\n"
365 "rldimi %0,%1,7*8,4*8\n"
366 "rldicl %1,%1,32,0\n"
367 "rlwimi %0,%1,8,8,31\n"
368 "rlwimi %0,%1,24,16,23\n"
369 : "=r" (ret) , "=r" (tmp) : "b" (addr) , "m" (*addr));
370 return ret;
371}
372
373static inline unsigned long in_be64(const volatile unsigned long __iomem *addr)
374{
375 unsigned long ret;
376
377 __asm__ __volatile__("ld%U1%X1 %0,%1; twi 0,%0,0; isync"
378 : "=r" (ret) : "m" (*addr));
379 return ret;
380}
381
382static inline void out_le64(volatile unsigned long __iomem *addr, unsigned long val)
383{
384 unsigned long tmp;
385
386 __asm__ __volatile__(
387 "rldimi %0,%1,5*8,1*8\n"
388 "rldimi %0,%1,3*8,2*8\n"
389 "rldimi %0,%1,1*8,3*8\n"
390 "rldimi %0,%1,7*8,4*8\n"
391 "rldicl %1,%1,32,0\n"
392 "rlwimi %0,%1,8,8,31\n"
393 "rlwimi %0,%1,24,16,23\n"
394 "std %0,0(%3)\n"
395 "sync"
396 : "=&r" (tmp) , "=&r" (val) : "1" (val) , "b" (addr) , "m" (*addr));
397}
398
399static inline void out_be64(volatile unsigned long __iomem *addr, unsigned long val)
400{
401 __asm__ __volatile__("std%U0%X0 %1,%0; sync" : "=m" (*addr) : "r" (val));
402}
403
404#ifndef CONFIG_PPC_ISERIES
405#include <asm/eeh.h>
406#endif
407
408#ifdef __KERNEL__
409
410/**
411 * check_signature - find BIOS signatures
412 * @io_addr: mmio address to check
413 * @signature: signature block
414 * @length: length of signature
415 *
416 * Perform a signature comparison with the mmio address io_addr. This
417 * address should have been obtained by ioremap.
418 * Returns 1 on a match.
419 */
420static inline int check_signature(const volatile void __iomem * io_addr,
421 const unsigned char *signature, int length)
422{
423 int retval = 0;
424#ifndef CONFIG_PPC_ISERIES
425 do {
426 if (readb(io_addr) != *signature)
427 goto out;
428 io_addr++;
429 signature++;
430 length--;
431 } while (length);
432 retval = 1;
433out:
434#endif
435 return retval;
436}
437
438/* Nothing to do */
439
440#define dma_cache_inv(_start,_size) do { } while (0)
441#define dma_cache_wback(_start,_size) do { } while (0)
442#define dma_cache_wback_inv(_start,_size) do { } while (0)
443
444/* Check of existence of legacy devices */
445extern int check_legacy_ioport(unsigned long base_port);
446
447
448/*
449 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
450 * access
451 */
452#define xlate_dev_mem_ptr(p) __va(p)
453
454/*
455 * Convert a virtual cached pointer to an uncached pointer
456 */
457#define xlate_dev_kmem_ptr(p) p
458
459#endif /* __KERNEL__ */
460
461#endif /* CONFIG_PPC64 */
462#endif /* _ASM_POWERPC_IO_H */