1#ifndef __ALPHA_IO_H
2#define __ALPHA_IO_H
3
4#ifdef __KERNEL__
5
6#include <linux/kernel.h>
7#include <linux/mm.h>
8#include <asm/compiler.h>
9#include <asm/pgtable.h>
10#include <asm/machvec.h>
11#include <asm/hwrpb.h>
12
13
14
15#include <asm-generic/iomap.h>
16
17
18#define __SLOW_DOWN_IO do { } while (0)
19#define SLOW_DOWN_IO do { } while (0)
20
21
22
23
24#ifdef USE_48_BIT_KSEG
25#define IDENT_ADDR 0xffff800000000000UL
26#else
27#define IDENT_ADDR 0xfffffc0000000000UL
28#endif
29
30
31
32
33
34
35
36
37extern inline void __set_hae(unsigned long new_hae)
38{
39 unsigned long flags = swpipl(IPL_MAX);
40
41 barrier();
42
43 alpha_mv.hae_cache = new_hae;
44 *alpha_mv.hae_register = new_hae;
45 mb();
46
47 new_hae = *alpha_mv.hae_register;
48
49 setipl(flags);
50 barrier();
51}
52
53extern inline void set_hae(unsigned long new_hae)
54{
55 if (new_hae != alpha_mv.hae_cache)
56 __set_hae(new_hae);
57}
58
59
60
61
62#ifdef USE_48_BIT_KSEG
63static inline unsigned long virt_to_phys(void *address)
64{
65 return (unsigned long)address - IDENT_ADDR;
66}
67
68static inline void * phys_to_virt(unsigned long address)
69{
70 return (void *) (address + IDENT_ADDR);
71}
72#else
73static inline unsigned long virt_to_phys(void *address)
74{
75 unsigned long phys = (unsigned long)address;
76
77
78 phys <<= (64 - 41);
79 phys = (long)phys >> (64 - 41);
80
81
82 phys &= (1ul << hwrpb->pa_bits) - 1;
83
84 return phys;
85}
86
87static inline void * phys_to_virt(unsigned long address)
88{
89 return (void *)(IDENT_ADDR + (address & ((1ul << 41) - 1)));
90}
91#endif
92
93#define page_to_phys(page) page_to_pa(page)
94
95static inline dma_addr_t __deprecated isa_page_to_bus(struct page *page)
96{
97 return page_to_phys(page);
98}
99
100
101#define IO_SPACE_LIMIT 0xffff
102
103
104
105
106
107
108
109
110
111extern unsigned long __direct_map_base;
112extern unsigned long __direct_map_size;
113
114static inline unsigned long __deprecated virt_to_bus(void *address)
115{
116 unsigned long phys = virt_to_phys(address);
117 unsigned long bus = phys + __direct_map_base;
118 return phys <= __direct_map_size ? bus : 0;
119}
120#define isa_virt_to_bus virt_to_bus
121
122static inline void * __deprecated bus_to_virt(unsigned long address)
123{
124 void *virt;
125
126
127
128
129 address -= __direct_map_base;
130 virt = phys_to_virt(address);
131 return (long)address <= 0 ? NULL : virt;
132}
133#define isa_bus_to_virt bus_to_virt
134
135
136
137
138
139#define IO_CONCAT(a,b) _IO_CONCAT(a,b)
140#define _IO_CONCAT(a,b) a ## _ ## b
141
142#ifdef CONFIG_ALPHA_GENERIC
143
144
145
146#define REMAP1(TYPE, NAME, QUAL) \
147static inline TYPE generic_##NAME(QUAL void __iomem *addr) \
148{ \
149 return alpha_mv.mv_##NAME(addr); \
150}
151
152#define REMAP2(TYPE, NAME, QUAL) \
153static inline void generic_##NAME(TYPE b, QUAL void __iomem *addr) \
154{ \
155 alpha_mv.mv_##NAME(b, addr); \
156}
157
158REMAP1(unsigned int, ioread8, )
159REMAP1(unsigned int, ioread16, )
160REMAP1(unsigned int, ioread32, )
161REMAP1(u8, readb, const volatile)
162REMAP1(u16, readw, const volatile)
163REMAP1(u32, readl, const volatile)
164REMAP1(u64, readq, const volatile)
165
166REMAP2(u8, iowrite8, )
167REMAP2(u16, iowrite16, )
168REMAP2(u32, iowrite32, )
169REMAP2(u8, writeb, volatile)
170REMAP2(u16, writew, volatile)
171REMAP2(u32, writel, volatile)
172REMAP2(u64, writeq, volatile)
173
174#undef REMAP1
175#undef REMAP2
176
177extern inline void __iomem *generic_ioportmap(unsigned long a)
178{
179 return alpha_mv.mv_ioportmap(a);
180}
181
182static inline void __iomem *generic_ioremap(unsigned long a, unsigned long s)
183{
184 return alpha_mv.mv_ioremap(a, s);
185}
186
187static inline void generic_iounmap(volatile void __iomem *a)
188{
189 return alpha_mv.mv_iounmap(a);
190}
191
192static inline int generic_is_ioaddr(unsigned long a)
193{
194 return alpha_mv.mv_is_ioaddr(a);
195}
196
197static inline int generic_is_mmio(const volatile void __iomem *a)
198{
199 return alpha_mv.mv_is_mmio(a);
200}
201
202#define __IO_PREFIX generic
203#define generic_trivial_rw_bw 0
204#define generic_trivial_rw_lq 0
205#define generic_trivial_io_bw 0
206#define generic_trivial_io_lq 0
207#define generic_trivial_iounmap 0
208
209#else
210
211#if defined(CONFIG_ALPHA_APECS)
212# include <asm/core_apecs.h>
213#elif defined(CONFIG_ALPHA_CIA)
214# include <asm/core_cia.h>
215#elif defined(CONFIG_ALPHA_IRONGATE)
216# include <asm/core_irongate.h>
217#elif defined(CONFIG_ALPHA_JENSEN)
218# include <asm/jensen.h>
219#elif defined(CONFIG_ALPHA_LCA)
220# include <asm/core_lca.h>
221#elif defined(CONFIG_ALPHA_MARVEL)
222# include <asm/core_marvel.h>
223#elif defined(CONFIG_ALPHA_MCPCIA)
224# include <asm/core_mcpcia.h>
225#elif defined(CONFIG_ALPHA_POLARIS)
226# include <asm/core_polaris.h>
227#elif defined(CONFIG_ALPHA_T2)
228# include <asm/core_t2.h>
229#elif defined(CONFIG_ALPHA_TSUNAMI)
230# include <asm/core_tsunami.h>
231#elif defined(CONFIG_ALPHA_TITAN)
232# include <asm/core_titan.h>
233#elif defined(CONFIG_ALPHA_WILDFIRE)
234# include <asm/core_wildfire.h>
235#else
236#error "What system is this?"
237#endif
238
239#endif
240
241
242
243
244extern u8 inb(unsigned long port);
245extern u16 inw(unsigned long port);
246extern u32 inl(unsigned long port);
247extern void outb(u8 b, unsigned long port);
248extern void outw(u16 b, unsigned long port);
249extern void outl(u32 b, unsigned long port);
250
251extern u8 readb(const volatile void __iomem *addr);
252extern u16 readw(const volatile void __iomem *addr);
253extern u32 readl(const volatile void __iomem *addr);
254extern u64 readq(const volatile void __iomem *addr);
255extern void writeb(u8 b, volatile void __iomem *addr);
256extern void writew(u16 b, volatile void __iomem *addr);
257extern void writel(u32 b, volatile void __iomem *addr);
258extern void writeq(u64 b, volatile void __iomem *addr);
259
260extern u8 __raw_readb(const volatile void __iomem *addr);
261extern u16 __raw_readw(const volatile void __iomem *addr);
262extern u32 __raw_readl(const volatile void __iomem *addr);
263extern u64 __raw_readq(const volatile void __iomem *addr);
264extern void __raw_writeb(u8 b, volatile void __iomem *addr);
265extern void __raw_writew(u16 b, volatile void __iomem *addr);
266extern void __raw_writel(u32 b, volatile void __iomem *addr);
267extern void __raw_writeq(u64 b, volatile void __iomem *addr);
268
269
270
271
272
273
274
275
276extern inline void __iomem *ioport_map(unsigned long port, unsigned int size)
277{
278 return IO_CONCAT(__IO_PREFIX,ioportmap) (port);
279}
280
281extern inline void ioport_unmap(void __iomem *addr)
282{
283}
284
285static inline void __iomem *ioremap(unsigned long port, unsigned long size)
286{
287 return IO_CONCAT(__IO_PREFIX,ioremap) (port, size);
288}
289
290static inline void __iomem *__ioremap(unsigned long port, unsigned long size,
291 unsigned long flags)
292{
293 return ioremap(port, size);
294}
295
296static inline void __iomem * ioremap_nocache(unsigned long offset,
297 unsigned long size)
298{
299 return ioremap(offset, size);
300}
301
302#define ioremap_uc ioremap_nocache
303
304static inline void iounmap(volatile void __iomem *addr)
305{
306 IO_CONCAT(__IO_PREFIX,iounmap)(addr);
307}
308
309static inline int __is_ioaddr(unsigned long addr)
310{
311 return IO_CONCAT(__IO_PREFIX,is_ioaddr)(addr);
312}
313#define __is_ioaddr(a) __is_ioaddr((unsigned long)(a))
314
315static inline int __is_mmio(const volatile void __iomem *addr)
316{
317 return IO_CONCAT(__IO_PREFIX,is_mmio)(addr);
318}
319
320
321
322
323
324
325#if IO_CONCAT(__IO_PREFIX,trivial_io_bw)
326extern inline unsigned int ioread8(void __iomem *addr)
327{
328 unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr);
329 mb();
330 return ret;
331}
332
333extern inline unsigned int ioread16(void __iomem *addr)
334{
335 unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr);
336 mb();
337 return ret;
338}
339
340extern inline void iowrite8(u8 b, void __iomem *addr)
341{
342 IO_CONCAT(__IO_PREFIX,iowrite8)(b, addr);
343 mb();
344}
345
346extern inline void iowrite16(u16 b, void __iomem *addr)
347{
348 IO_CONCAT(__IO_PREFIX,iowrite16)(b, addr);
349 mb();
350}
351
352extern inline u8 inb(unsigned long port)
353{
354 return ioread8(ioport_map(port, 1));
355}
356
357extern inline u16 inw(unsigned long port)
358{
359 return ioread16(ioport_map(port, 2));
360}
361
362extern inline void outb(u8 b, unsigned long port)
363{
364 iowrite8(b, ioport_map(port, 1));
365}
366
367extern inline void outw(u16 b, unsigned long port)
368{
369 iowrite16(b, ioport_map(port, 2));
370}
371#endif
372
373#if IO_CONCAT(__IO_PREFIX,trivial_io_lq)
374extern inline unsigned int ioread32(void __iomem *addr)
375{
376 unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr);
377 mb();
378 return ret;
379}
380
381extern inline void iowrite32(u32 b, void __iomem *addr)
382{
383 IO_CONCAT(__IO_PREFIX,iowrite32)(b, addr);
384 mb();
385}
386
387extern inline u32 inl(unsigned long port)
388{
389 return ioread32(ioport_map(port, 4));
390}
391
392extern inline void outl(u32 b, unsigned long port)
393{
394 iowrite32(b, ioport_map(port, 4));
395}
396#endif
397
398#if IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 1
399extern inline u8 __raw_readb(const volatile void __iomem *addr)
400{
401 return IO_CONCAT(__IO_PREFIX,readb)(addr);
402}
403
404extern inline u16 __raw_readw(const volatile void __iomem *addr)
405{
406 return IO_CONCAT(__IO_PREFIX,readw)(addr);
407}
408
409extern inline void __raw_writeb(u8 b, volatile void __iomem *addr)
410{
411 IO_CONCAT(__IO_PREFIX,writeb)(b, addr);
412}
413
414extern inline void __raw_writew(u16 b, volatile void __iomem *addr)
415{
416 IO_CONCAT(__IO_PREFIX,writew)(b, addr);
417}
418
419extern inline u8 readb(const volatile void __iomem *addr)
420{
421 u8 ret = __raw_readb(addr);
422 mb();
423 return ret;
424}
425
426extern inline u16 readw(const volatile void __iomem *addr)
427{
428 u16 ret = __raw_readw(addr);
429 mb();
430 return ret;
431}
432
433extern inline void writeb(u8 b, volatile void __iomem *addr)
434{
435 __raw_writeb(b, addr);
436 mb();
437}
438
439extern inline void writew(u16 b, volatile void __iomem *addr)
440{
441 __raw_writew(b, addr);
442 mb();
443}
444#endif
445
446#if IO_CONCAT(__IO_PREFIX,trivial_rw_lq) == 1
447extern inline u32 __raw_readl(const volatile void __iomem *addr)
448{
449 return IO_CONCAT(__IO_PREFIX,readl)(addr);
450}
451
452extern inline u64 __raw_readq(const volatile void __iomem *addr)
453{
454 return IO_CONCAT(__IO_PREFIX,readq)(addr);
455}
456
457extern inline void __raw_writel(u32 b, volatile void __iomem *addr)
458{
459 IO_CONCAT(__IO_PREFIX,writel)(b, addr);
460}
461
462extern inline void __raw_writeq(u64 b, volatile void __iomem *addr)
463{
464 IO_CONCAT(__IO_PREFIX,writeq)(b, addr);
465}
466
467extern inline u32 readl(const volatile void __iomem *addr)
468{
469 u32 ret = __raw_readl(addr);
470 mb();
471 return ret;
472}
473
474extern inline u64 readq(const volatile void __iomem *addr)
475{
476 u64 ret = __raw_readq(addr);
477 mb();
478 return ret;
479}
480
481extern inline void writel(u32 b, volatile void __iomem *addr)
482{
483 __raw_writel(b, addr);
484 mb();
485}
486
487extern inline void writeq(u64 b, volatile void __iomem *addr)
488{
489 __raw_writeq(b, addr);
490 mb();
491}
492#endif
493
494#define ioread16be(p) be16_to_cpu(ioread16(p))
495#define ioread32be(p) be32_to_cpu(ioread32(p))
496#define iowrite16be(v,p) iowrite16(cpu_to_be16(v), (p))
497#define iowrite32be(v,p) iowrite32(cpu_to_be32(v), (p))
498
499#define inb_p inb
500#define inw_p inw
501#define inl_p inl
502#define outb_p outb
503#define outw_p outw
504#define outl_p outl
505#define readb_relaxed(addr) __raw_readb(addr)
506#define readw_relaxed(addr) __raw_readw(addr)
507#define readl_relaxed(addr) __raw_readl(addr)
508#define readq_relaxed(addr) __raw_readq(addr)
509#define writeb_relaxed(b, addr) __raw_writeb(b, addr)
510#define writew_relaxed(b, addr) __raw_writew(b, addr)
511#define writel_relaxed(b, addr) __raw_writel(b, addr)
512#define writeq_relaxed(b, addr) __raw_writeq(b, addr)
513
514#define mmiowb()
515
516
517
518
519extern void memcpy_fromio(void *, const volatile void __iomem *, long);
520extern void memcpy_toio(volatile void __iomem *, const void *, long);
521extern void _memset_c_io(volatile void __iomem *, unsigned long, long);
522
523static inline void memset_io(volatile void __iomem *addr, u8 c, long len)
524{
525 _memset_c_io(addr, 0x0101010101010101UL * c, len);
526}
527
528#define __HAVE_ARCH_MEMSETW_IO
529static inline void memsetw_io(volatile void __iomem *addr, u16 c, long len)
530{
531 _memset_c_io(addr, 0x0001000100010001UL * c, len);
532}
533
534
535
536
537extern void insb (unsigned long port, void *dst, unsigned long count);
538extern void insw (unsigned long port, void *dst, unsigned long count);
539extern void insl (unsigned long port, void *dst, unsigned long count);
540extern void outsb (unsigned long port, const void *src, unsigned long count);
541extern void outsw (unsigned long port, const void *src, unsigned long count);
542extern void outsl (unsigned long port, const void *src, unsigned long count);
543
544
545
546
547
548
549
550
551
552#ifdef CONFIG_ALPHA_GENERIC
553# define RTC_PORT(x) ((x) + alpha_mv.rtc_port)
554#else
555# ifdef CONFIG_ALPHA_JENSEN
556# define RTC_PORT(x) (0x170+(x))
557# else
558# define RTC_PORT(x) (0x70 + (x))
559# endif
560#endif
561#define RTC_ALWAYS_BCD 0
562
563
564
565
566
567
568
569
570#define writeq writeq
571#define readq readq
572
573
574
575
576
577#define xlate_dev_mem_ptr(p) __va(p)
578
579
580
581
582#define xlate_dev_kmem_ptr(p) p
583
584#endif
585
586#endif
587