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