arch/sparc/include/asm/io_64.h

   1 #ifndef __SPARC64_IO_H
   2 #define __SPARC64_IO_H
   3
   4 #include <linux/kernel.h>
   5 #include <linux/compiler.h>
   6 #include <linux/types.h>
   7
   8 #include <asm/page.h>      /* IO address mapping routines need this */
   9 #include <asm/asi.h>
  10 #include <asm-generic/pci_iomap.h>
  11
  12 /* BIO layer definitions. */
  13 extern unsigned long kern_base, kern_size;
  14
  15 /* __raw_{read,write}{b,w,l,q} uses direct access.
  16  * Access the memory as big endian bypassing the cache
  17  * by using ASI_PHYS_BYPASS_EC_E
  18  */
  19 #define __raw_readb __raw_readb
  20 static inline u8 __raw_readb(const volatile void __iomem *addr)
  21 {
  22         u8 ret;
  23
  24         __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_raw_readb */"
  25                              : "=r" (ret)
  26                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  27
  28         return ret;
  29 }
  30
  31 #define __raw_readw __raw_readw
  32 static inline u16 __raw_readw(const volatile void __iomem *addr)
  33 {
  34         u16 ret;
  35
  36         __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_raw_readw */"
  37                              : "=r" (ret)
  38                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  39
  40         return ret;
  41 }
  42
  43 #define __raw_readl __raw_readl
  44 static inline u32 __raw_readl(const volatile void __iomem *addr)
  45 {
  46         u32 ret;
  47
  48         __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_raw_readl */"
  49                              : "=r" (ret)
  50                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  51
  52         return ret;
  53 }
  54
  55 #define __raw_readq __raw_readq
  56 static inline u64 __raw_readq(const volatile void __iomem *addr)
  57 {
  58         u64 ret;
  59
  60         __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_raw_readq */"
  61                              : "=r" (ret)
  62                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  63
  64         return ret;
  65 }
  66
  67 #define __raw_writeb __raw_writeb
  68 static inline void __raw_writeb(u8 b, const volatile void __iomem *addr)
  69 {
  70         __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_raw_writeb */"
  71                              : /* no outputs */
  72                              : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  73 }
  74
  75 #define __raw_writew __raw_writew
  76 static inline void __raw_writew(u16 w, const volatile void __iomem *addr)
  77 {
  78         __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_raw_writew */"
  79                              : /* no outputs */
  80                              : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  81 }
  82
  83 #define __raw_writel __raw_writel
  84 static inline void __raw_writel(u32 l, const volatile void __iomem *addr)
  85 {
  86         __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_raw_writel */"
  87                              : /* no outputs */
  88                              : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  89 }
  90
  91 #define __raw_writeq __raw_writeq
  92 static inline void __raw_writeq(u64 q, const volatile void __iomem *addr)
  93 {
  94         __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_raw_writeq */"
  95                              : /* no outputs */
  96                              : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  97 }
  98
  99 /* Memory functions, same as I/O accesses on Ultra.
 100  * Access memory as little endian bypassing
 101  * the cache by using ASI_PHYS_BYPASS_EC_E_L
 102  */
 103 #define readb readb
 104 #define readb_relaxed readb
 105 static inline u8 readb(const volatile void __iomem *addr)
 106 {       u8 ret;
 107
 108         __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_readb */"
 109                              : "=r" (ret)
 110                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 111                              : "memory");
 112         return ret;
 113 }
 114
 115 #define readw readw
 116 #define readw_relaxed readw
 117 static inline u16 readw(const volatile void __iomem *addr)
 118 {       u16 ret;
 119
 120         __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_readw */"
 121                              : "=r" (ret)
 122                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 123                              : "memory");
 124
 125         return ret;
 126 }
 127
 128 #define readl readl
 129 #define readl_relaxed readl
 130 static inline u32 readl(const volatile void __iomem *addr)
 131 {       u32 ret;
 132
 133         __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_readl */"
 134                              : "=r" (ret)
 135                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 136                              : "memory");
 137
 138         return ret;
 139 }
 140
 141 #define readq readq
 142 #define readq_relaxed readq
 143 static inline u64 readq(const volatile void __iomem *addr)
 144 {       u64 ret;
 145
 146         __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_readq */"
 147                              : "=r" (ret)
 148                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 149                              : "memory");
 150
 151         return ret;
 152 }
 153
 154 #define writeb writeb
 155 #define writeb_relaxed writeb
 156 static inline void writeb(u8 b, volatile void __iomem *addr)
 157 {
 158         __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_writeb */"
 159                              : /* no outputs */
 160                              : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 161                              : "memory");
 162 }
 163
 164 #define writew writew
 165 #define writew_relaxed writew
 166 static inline void writew(u16 w, volatile void __iomem *addr)
 167 {
 168         __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_writew */"
 169                              : /* no outputs */
 170                              : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 171                              : "memory");
 172 }
 173
 174 #define writel writel
 175 #define writel_relaxed writel
 176 static inline void writel(u32 l, volatile void __iomem *addr)
 177 {
 178         __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_writel */"
 179                              : /* no outputs */
 180                              : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 181                              : "memory");
 182 }
 183
 184 #define writeq writeq
 185 #define writeq_relaxed writeq
 186 static inline void writeq(u64 q, volatile void __iomem *addr)
 187 {
 188         __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
 189                              : /* no outputs */
 190                              : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
 191                              : "memory");
 192 }
 193
 194 #define inb inb
 195 static inline u8 inb(unsigned long addr)
 196 {
 197         return readb((volatile void __iomem *)addr);
 198 }
 199
 200 #define inw inw
 201 static inline u16 inw(unsigned long addr)
 202 {
 203         return readw((volatile void __iomem *)addr);
 204 }
 205
 206 #define inl inl
 207 static inline u32 inl(unsigned long addr)
 208 {
 209         return readl((volatile void __iomem *)addr);
 210 }
 211
 212 #define outb outb
 213 static inline void outb(u8 b, unsigned long addr)
 214 {
 215         writeb(b, (volatile void __iomem *)addr);
 216 }
 217
 218 #define outw outw
 219 static inline void outw(u16 w, unsigned long addr)
 220 {
 221         writew(w, (volatile void __iomem *)addr);
 222 }
 223
 224 #define outl outl
 225 static inline void outl(u32 l, unsigned long addr)
 226 {
 227         writel(l, (volatile void __iomem *)addr);
 228 }
 229
 230
 231 #define inb_p(__addr)           inb(__addr)
 232 #define outb_p(__b, __addr)     outb(__b, __addr)
 233 #define inw_p(__addr)           inw(__addr)
 234 #define outw_p(__w, __addr)     outw(__w, __addr)
 235 #define inl_p(__addr)           inl(__addr)
 236 #define outl_p(__l, __addr)     outl(__l, __addr)
 237
 238 void outsb(unsigned long, const void *, unsigned long);
 239 void outsw(unsigned long, const void *, unsigned long);
 240 void outsl(unsigned long, const void *, unsigned long);
 241 void insb(unsigned long, void *, unsigned long);
 242 void insw(unsigned long, void *, unsigned long);
 243 void insl(unsigned long, void *, unsigned long);
 244
 245 static inline void ioread8_rep(void __iomem *port, void *buf, unsigned long count)
 246 {
 247         insb((unsigned long __force)port, buf, count);
 248 }
 249 static inline void ioread16_rep(void __iomem *port, void *buf, unsigned long count)
 250 {
 251         insw((unsigned long __force)port, buf, count);
 252 }
 253
 254 static inline void ioread32_rep(void __iomem *port, void *buf, unsigned long count)
 255 {
 256         insl((unsigned long __force)port, buf, count);
 257 }
 258
 259 static inline void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count)
 260 {
 261         outsb((unsigned long __force)port, buf, count);
 262 }
 263
 264 static inline void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count)
 265 {
 266         outsw((unsigned long __force)port, buf, count);
 267 }
 268
 269 static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count)
 270 {
 271         outsl((unsigned long __force)port, buf, count);
 272 }
 273
 274 /* Valid I/O Space regions are anywhere, because each PCI bus supported
 275  * can live in an arbitrary area of the physical address range.
 276  */
 277 #define IO_SPACE_LIMIT 0xffffffffffffffffUL
 278
 279 /* Now, SBUS variants, only difference from PCI is that we do
 280  * not use little-endian ASIs.
 281  */
 282 static inline u8 sbus_readb(const volatile void __iomem *addr)
 283 {
 284         return __raw_readb(addr);
 285 }
 286
 287 static inline u16 sbus_readw(const volatile void __iomem *addr)
 288 {
 289         return __raw_readw(addr);
 290 }
 291
 292 static inline u32 sbus_readl(const volatile void __iomem *addr)
 293 {
 294         return __raw_readl(addr);
 295 }
 296
 297 static inline u64 sbus_readq(const volatile void __iomem *addr)
 298 {
 299         return __raw_readq(addr);
 300 }
 301
 302 static inline void sbus_writeb(u8 b, volatile void __iomem *addr)
 303 {
 304         __raw_writeb(b, addr);
 305 }
 306
 307 static inline void sbus_writew(u16 w, volatile void __iomem *addr)
 308 {
 309         __raw_writew(w, addr);
 310 }
 311
 312 static inline void sbus_writel(u32 l, volatile void __iomem *addr)
 313 {
 314         __raw_writel(l, addr);
 315 }
 316
 317 static inline void sbus_writeq(u64 q, volatile void __iomem *addr)
 318 {
 319         __raw_writeq(q, addr);
 320 }
 321
 322 static inline void sbus_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
 323 {
 324         while(n--) {
 325                 sbus_writeb(c, dst);
 326                 dst++;
 327         }
 328 }
 329
 330 static inline void memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
 331 {
 332         volatile void __iomem *d = dst;
 333
 334         while (n--) {
 335                 writeb(c, d);
 336                 d++;
 337         }
 338 }
 339
 340 static inline void sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
 341                                       __kernel_size_t n)
 342 {
 343         char *d = dst;
 344
 345         while (n--) {
 346                 char tmp = sbus_readb(src);
 347                 *d++ = tmp;
 348                 src++;
 349         }
 350 }
 351
 352
 353 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
 354                                  __kernel_size_t n)
 355 {
 356         char *d = dst;
 357
 358         while (n--) {
 359                 char tmp = readb(src);
 360                 *d++ = tmp;
 361                 src++;
 362         }
 363 }
 364
 365 static inline void sbus_memcpy_toio(volatile void __iomem *dst, const void *src,
 366                                     __kernel_size_t n)
 367 {
 368         const char *s = src;
 369         volatile void __iomem *d = dst;
 370
 371         while (n--) {
 372                 char tmp = *s++;
 373                 sbus_writeb(tmp, d);
 374                 d++;
 375         }
 376 }
 377
 378 static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
 379                                __kernel_size_t n)
 380 {
 381         const char *s = src;
 382         volatile void __iomem *d = dst;
 383
 384         while (n--) {
 385                 char tmp = *s++;
 386                 writeb(tmp, d);
 387                 d++;
 388         }
 389 }
 390
 391 #define mmiowb()
 392
 393 #ifdef __KERNEL__
 394
 395 /* On sparc64 we have the whole physical IO address space accessible
 396  * using physically addressed loads and stores, so this does nothing.
 397  */
 398 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 399 {
 400         return (void __iomem *)offset;
 401 }
 402
 403 #define ioremap_nocache(X,Y)            ioremap((X),(Y))
 404 #define ioremap_wc(X,Y)                 ioremap((X),(Y))
 405 #define ioremap_wt(X,Y)                 ioremap((X),(Y))
 406
 407 static inline void iounmap(volatile void __iomem *addr)
 408 {
 409 }
 410
 411 #define ioread8                 readb
 412 #define ioread16                readw
 413 #define ioread16be              __raw_readw
 414 #define ioread32                readl
 415 #define ioread32be              __raw_readl
 416 #define iowrite8                writeb
 417 #define iowrite16               writew
 418 #define iowrite16be             __raw_writew
 419 #define iowrite32               writel
 420 #define iowrite32be             __raw_writel
 421
 422 /* Create a virtual mapping cookie for an IO port range */
 423 void __iomem *ioport_map(unsigned long port, unsigned int nr);
 424 void ioport_unmap(void __iomem *);
 425
 426 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 427 struct pci_dev;
 428 void pci_iounmap(struct pci_dev *dev, void __iomem *);
 429
 430 static inline int sbus_can_dma_64bit(void)
 431 {
 432         return 1;
 433 }
 434 static inline int sbus_can_burst64(void)
 435 {
 436         return 1;
 437 }
 438 struct device;
 439 void sbus_set_sbus64(struct device *, int);
 440
 441 /*
 442  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
 443  * access
 444  */
 445 #define xlate_dev_mem_ptr(p)    __va(p)
 446
 447 /*
 448  * Convert a virtual cached pointer to an uncached pointer
 449  */
 450 #define xlate_dev_kmem_ptr(p)   p
 451
 452 #endif
 453
 454 #endif /* !(__SPARC64_IO_H) */