1 /* $Id: io.h,v 1.47 2001/12/13 10:36:02 davem Exp $ */
5 #include <linux/kernel.h>
6 #include <linux/compiler.h>
7 #include <linux/types.h>
9 #include <asm/page.h> /* IO address mapping routines need this */
10 #include <asm/system.h>
14 #define __SLOW_DOWN_IO do { } while (0)
15 #define SLOW_DOWN_IO do { } while (0)
17 extern unsigned long virt_to_bus_not_defined_use_pci_map(volatile void *addr);
18 #define virt_to_bus virt_to_bus_not_defined_use_pci_map
19 extern unsigned long bus_to_virt_not_defined_use_pci_map(volatile void *addr);
20 #define bus_to_virt bus_to_virt_not_defined_use_pci_map
22 /* BIO layer definitions. */
23 extern unsigned long kern_base, kern_size;
24 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
25 #define BIO_VMERGE_BOUNDARY 8192
27 /* Different PCI controllers we support have their PCI MEM space
28 * mapped to an either 2GB (Psycho) or 4GB (Sabre) aligned area,
29 * so need to chop off the top 33 or 32 bits.
31 extern unsigned long pci_memspace_mask;
33 #define bus_dvma_to_mem(__vaddr) ((__vaddr) & pci_memspace_mask)
35 static __inline__ u8 _inb(unsigned long addr)
39 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_inb */"
41 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
46 static __inline__ u16 _inw(unsigned long addr)
50 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_inw */"
52 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
57 static __inline__ u32 _inl(unsigned long addr)
61 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_inl */"
63 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
68 static __inline__ void _outb(u8 b, unsigned long addr)
70 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_outb */"
72 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
75 static __inline__ void _outw(u16 w, unsigned long addr)
77 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_outw */"
79 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
82 static __inline__ void _outl(u32 l, unsigned long addr)
84 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_outl */"
86 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
89 #define inb(__addr) (_inb((unsigned long)(__addr)))
90 #define inw(__addr) (_inw((unsigned long)(__addr)))
91 #define inl(__addr) (_inl((unsigned long)(__addr)))
92 #define outb(__b, __addr) (_outb((u8)(__b), (unsigned long)(__addr)))
93 #define outw(__w, __addr) (_outw((u16)(__w), (unsigned long)(__addr)))
94 #define outl(__l, __addr) (_outl((u32)(__l), (unsigned long)(__addr)))
96 #define inb_p(__addr) inb(__addr)
97 #define outb_p(__b, __addr) outb(__b, __addr)
98 #define inw_p(__addr) inw(__addr)
99 #define outw_p(__w, __addr) outw(__w, __addr)
100 #define inl_p(__addr) inl(__addr)
101 #define outl_p(__l, __addr) outl(__l, __addr)
103 extern void outsb(unsigned long, const void *, unsigned long);
104 extern void outsw(unsigned long, const void *, unsigned long);
105 extern void outsl(unsigned long, const void *, unsigned long);
106 extern void insb(unsigned long, void *, unsigned long);
107 extern void insw(unsigned long, void *, unsigned long);
108 extern void insl(unsigned long, void *, unsigned long);
110 static inline void ioread8_rep(void __iomem *port, void *buf, unsigned long count)
112 insb((unsigned long __force)port, buf, count);
114 static inline void ioread16_rep(void __iomem *port, void *buf, unsigned long count)
116 insw((unsigned long __force)port, buf, count);
119 static inline void ioread32_rep(void __iomem *port, void *buf, unsigned long count)
121 insl((unsigned long __force)port, buf, count);
124 static inline void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count)
126 outsb((unsigned long __force)port, buf, count);
129 static inline void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count)
131 outsw((unsigned long __force)port, buf, count);
134 static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count)
136 outsl((unsigned long __force)port, buf, count);
139 /* Memory functions, same as I/O accesses on Ultra. */
140 static inline u8 _readb(const volatile void __iomem *addr)
143 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_readb */"
145 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
149 static inline u16 _readw(const volatile void __iomem *addr)
152 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_readw */"
154 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
159 static inline u32 _readl(const volatile void __iomem *addr)
162 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_readl */"
164 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
169 static inline u64 _readq(const volatile void __iomem *addr)
172 __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_readq */"
174 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
179 static inline void _writeb(u8 b, volatile void __iomem *addr)
181 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_writeb */"
183 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
186 static inline void _writew(u16 w, volatile void __iomem *addr)
188 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_writew */"
190 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
193 static inline void _writel(u32 l, volatile void __iomem *addr)
195 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_writel */"
197 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
200 static inline void _writeq(u64 q, volatile void __iomem *addr)
202 __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
204 : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
207 #define readb(__addr) _readb(__addr)
208 #define readw(__addr) _readw(__addr)
209 #define readl(__addr) _readl(__addr)
210 #define readq(__addr) _readq(__addr)
211 #define readb_relaxed(__addr) _readb(__addr)
212 #define readw_relaxed(__addr) _readw(__addr)
213 #define readl_relaxed(__addr) _readl(__addr)
214 #define readq_relaxed(__addr) _readq(__addr)
215 #define writeb(__b, __addr) _writeb(__b, __addr)
216 #define writew(__w, __addr) _writew(__w, __addr)
217 #define writel(__l, __addr) _writel(__l, __addr)
218 #define writeq(__q, __addr) _writeq(__q, __addr)
220 /* Now versions without byte-swapping. */
221 static __inline__ u8 _raw_readb(unsigned long addr)
225 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_raw_readb */"
227 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
232 static __inline__ u16 _raw_readw(unsigned long addr)
236 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_raw_readw */"
238 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
243 static __inline__ u32 _raw_readl(unsigned long addr)
247 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_raw_readl */"
249 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
254 static __inline__ u64 _raw_readq(unsigned long addr)
258 __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_raw_readq */"
260 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
265 static __inline__ void _raw_writeb(u8 b, unsigned long addr)
267 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_raw_writeb */"
269 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
272 static __inline__ void _raw_writew(u16 w, unsigned long addr)
274 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_raw_writew */"
276 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
279 static __inline__ void _raw_writel(u32 l, unsigned long addr)
281 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_raw_writel */"
283 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
286 static __inline__ void _raw_writeq(u64 q, unsigned long addr)
288 __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_raw_writeq */"
290 : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
293 #define __raw_readb(__addr) (_raw_readb((unsigned long)(__addr)))
294 #define __raw_readw(__addr) (_raw_readw((unsigned long)(__addr)))
295 #define __raw_readl(__addr) (_raw_readl((unsigned long)(__addr)))
296 #define __raw_readq(__addr) (_raw_readq((unsigned long)(__addr)))
297 #define __raw_writeb(__b, __addr) (_raw_writeb((u8)(__b), (unsigned long)(__addr)))
298 #define __raw_writew(__w, __addr) (_raw_writew((u16)(__w), (unsigned long)(__addr)))
299 #define __raw_writel(__l, __addr) (_raw_writel((u32)(__l), (unsigned long)(__addr)))
300 #define __raw_writeq(__q, __addr) (_raw_writeq((u64)(__q), (unsigned long)(__addr)))
302 /* Valid I/O Space regions are anywhere, because each PCI bus supported
303 * can live in an arbitrary area of the physical address range.
305 #define IO_SPACE_LIMIT 0xffffffffffffffffUL
307 /* Now, SBUS variants, only difference from PCI is that we do
308 * not use little-endian ASIs.
310 static inline u8 _sbus_readb(const volatile void __iomem *addr)
314 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* sbus_readb */"
316 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
321 static inline u16 _sbus_readw(const volatile void __iomem *addr)
325 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* sbus_readw */"
327 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
332 static inline u32 _sbus_readl(const volatile void __iomem *addr)
336 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* sbus_readl */"
338 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
343 static inline u64 _sbus_readq(const volatile void __iomem *addr)
347 __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* sbus_readq */"
349 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
354 static inline void _sbus_writeb(u8 b, volatile void __iomem *addr)
356 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* sbus_writeb */"
358 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
361 static inline void _sbus_writew(u16 w, volatile void __iomem *addr)
363 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* sbus_writew */"
365 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
368 static inline void _sbus_writel(u32 l, volatile void __iomem *addr)
370 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* sbus_writel */"
372 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
375 static inline void _sbus_writeq(u64 l, volatile void __iomem *addr)
377 __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* sbus_writeq */"
379 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
382 #define sbus_readb(__addr) _sbus_readb(__addr)
383 #define sbus_readw(__addr) _sbus_readw(__addr)
384 #define sbus_readl(__addr) _sbus_readl(__addr)
385 #define sbus_readq(__addr) _sbus_readq(__addr)
386 #define sbus_writeb(__b, __addr) _sbus_writeb(__b, __addr)
387 #define sbus_writew(__w, __addr) _sbus_writew(__w, __addr)
388 #define sbus_writel(__l, __addr) _sbus_writel(__l, __addr)
389 #define sbus_writeq(__l, __addr) _sbus_writeq(__l, __addr)
391 static inline void _sbus_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
399 #define sbus_memset_io(d,c,sz) _sbus_memset_io(d,c,sz)
402 _memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
404 volatile void __iomem *d = dst;
412 #define memset_io(d,c,sz) _memset_io(d,c,sz)
415 _memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
420 char tmp = readb(src);
426 #define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
429 _memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
432 volatile void __iomem *d = dst;
441 #define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
443 static inline int check_signature(void __iomem *io_addr,
444 const unsigned char *signature,
449 if (readb(io_addr) != *signature++)
462 /* On sparc64 we have the whole physical IO address space accessible
463 * using physically addressed loads and stores, so this does nothing.
465 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
467 return (void __iomem *)offset;
470 #define ioremap_nocache(X,Y) ioremap((X),(Y))
472 static inline void iounmap(volatile void __iomem *addr)
476 #define ioread8(X) readb(X)
477 #define ioread16(X) readw(X)
478 #define ioread32(X) readl(X)
479 #define iowrite8(val,X) writeb(val,X)
480 #define iowrite16(val,X) writew(val,X)
481 #define iowrite32(val,X) writel(val,X)
483 /* Create a virtual mapping cookie for an IO port range */
484 extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
485 extern void ioport_unmap(void __iomem *);
487 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
489 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
490 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
492 /* Similarly for SBUS. */
493 #define sbus_ioremap(__res, __offset, __size, __name) \
494 ({ unsigned long __ret; \
495 __ret = (__res)->start + (((__res)->flags & 0x1ffUL) << 32UL); \
496 __ret += (unsigned long) (__offset); \
497 if (! request_region((__ret), (__size), (__name))) \
499 (void __iomem *) __ret; \
502 #define sbus_iounmap(__addr, __size) \
503 release_region((unsigned long)(__addr), (__size))
507 #define dma_cache_inv(_start,_size) do { } while (0)
508 #define dma_cache_wback(_start,_size) do { } while (0)
509 #define dma_cache_wback_inv(_start,_size) do { } while (0)
512 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
515 #define xlate_dev_mem_ptr(p) __va(p)
518 * Convert a virtual cached pointer to an uncached pointer
520 #define xlate_dev_kmem_ptr(p) p
524 #endif /* !(__SPARC64_IO_H) */