1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * linux/include/asm-m68k/io.h 4 * 5 * 4/1/00 RZ: - rewritten to avoid clashes between ISA/PCI and other 6 * IO access 7 * - added Q40 support 8 * - added skeleton for GG-II and Amiga PCMCIA 9 * 2/3/01 RZ: - moved a few more defs into raw_io.h 10 * 11 * inX/outX should not be used by any driver unless it does 12 * ISA access. Other drivers should use function defined in raw_io.h 13 * or define its own macros on top of these. 14 * 15 * inX(),outX() are for ISA I/O 16 * isa_readX(),isa_writeX() are for ISA memory 17 */ 18 19 #ifndef _M68K_IO_MM_H 20 #define _M68K_IO_MM_H 21 22 #ifdef __KERNEL__ 23 24 #include <linux/compiler.h> 25 #include <asm/raw_io.h> 26 #include <asm/virtconvert.h> 27 #include <asm/kmap.h> 28 29 #include <asm-generic/iomap.h> 30 31 #ifdef CONFIG_ATARI 32 #include <asm/atarihw.h> 33 #endif 34 35 36 /* 37 * IO/MEM definitions for various ISA bridges 38 */ 39 40 41 #ifdef CONFIG_Q40 42 43 #define q40_isa_io_base 0xff400000 44 #define q40_isa_mem_base 0xff800000 45 46 #define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr))) 47 #define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+ 4*((unsigned long)(ioaddr))) 48 #define Q40_ISA_MEM_B(madr) (q40_isa_mem_base+1+4*((unsigned long)(madr))) 49 #define Q40_ISA_MEM_W(madr) (q40_isa_mem_base+ 4*((unsigned long)(madr))) 50 51 #define MULTI_ISA 0 52 #endif /* Q40 */ 53 54 #ifdef CONFIG_AMIGA_PCMCIA 55 #include <asm/amigayle.h> 56 57 #define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) ) 58 #define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) ) 59 60 #ifndef MULTI_ISA 61 #define MULTI_ISA 0 62 #else 63 #undef MULTI_ISA 64 #define MULTI_ISA 1 65 #endif 66 #endif /* AMIGA_PCMCIA */ 67 68 #ifdef CONFIG_ATARI_ROM_ISA 69 70 #define enec_isa_read_base 0xfffa0000 71 #define enec_isa_write_base 0xfffb0000 72 73 #define ENEC_ISA_IO_B(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9)) 74 #define ENEC_ISA_IO_W(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9)) 75 #define ENEC_ISA_MEM_B(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9)) 76 #define ENEC_ISA_MEM_W(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9)) 77 78 #ifndef MULTI_ISA 79 #define MULTI_ISA 0 80 #else 81 #undef MULTI_ISA 82 #define MULTI_ISA 1 83 #endif 84 #endif /* ATARI_ROM_ISA */ 85 86 87 #if defined(CONFIG_ISA) || defined(CONFIG_ATARI_ROM_ISA) 88 89 #if MULTI_ISA == 0 90 #undef MULTI_ISA 91 #endif 92 93 #define ISA_TYPE_Q40 (1) 94 #define ISA_TYPE_AG (2) 95 #define ISA_TYPE_ENEC (3) 96 97 #if defined(CONFIG_Q40) && !defined(MULTI_ISA) 98 #define ISA_TYPE ISA_TYPE_Q40 99 #define ISA_SEX 0 100 #endif 101 #if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA) 102 #define ISA_TYPE ISA_TYPE_AG 103 #define ISA_SEX 1 104 #endif 105 #if defined(CONFIG_ATARI_ROM_ISA) && !defined(MULTI_ISA) 106 #define ISA_TYPE ISA_TYPE_ENEC 107 #define ISA_SEX 0 108 #endif 109 110 #ifdef MULTI_ISA 111 extern int isa_type; 112 extern int isa_sex; 113 114 #define ISA_TYPE isa_type 115 #define ISA_SEX isa_sex 116 #endif 117 118 /* 119 * define inline addr translation functions. Normally only one variant will 120 * be compiled in so the case statement will be optimised away 121 */ 122 123 static inline u8 __iomem *isa_itb(unsigned long addr) 124 { 125 switch(ISA_TYPE) 126 { 127 #ifdef CONFIG_Q40 128 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_IO_B(addr); 129 #endif 130 #ifdef CONFIG_AMIGA_PCMCIA 131 case ISA_TYPE_AG: return (u8 __iomem *)AG_ISA_IO_B(addr); 132 #endif 133 #ifdef CONFIG_ATARI_ROM_ISA 134 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_IO_B(addr); 135 #endif 136 default: return NULL; /* avoid warnings, just in case */ 137 } 138 } 139 static inline u16 __iomem *isa_itw(unsigned long addr) 140 { 141 switch(ISA_TYPE) 142 { 143 #ifdef CONFIG_Q40 144 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_IO_W(addr); 145 #endif 146 #ifdef CONFIG_AMIGA_PCMCIA 147 case ISA_TYPE_AG: return (u16 __iomem *)AG_ISA_IO_W(addr); 148 #endif 149 #ifdef CONFIG_ATARI_ROM_ISA 150 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_IO_W(addr); 151 #endif 152 default: return NULL; /* avoid warnings, just in case */ 153 } 154 } 155 static inline u32 __iomem *isa_itl(unsigned long addr) 156 { 157 switch(ISA_TYPE) 158 { 159 #ifdef CONFIG_AMIGA_PCMCIA 160 case ISA_TYPE_AG: return (u32 __iomem *)AG_ISA_IO_W(addr); 161 #endif 162 default: return 0; /* avoid warnings, just in case */ 163 } 164 } 165 static inline u8 __iomem *isa_mtb(unsigned long addr) 166 { 167 switch(ISA_TYPE) 168 { 169 #ifdef CONFIG_Q40 170 case ISA_TYPE_Q40: return (u8 __iomem *)Q40_ISA_MEM_B(addr); 171 #endif 172 #ifdef CONFIG_AMIGA_PCMCIA 173 case ISA_TYPE_AG: return (u8 __iomem *)addr; 174 #endif 175 #ifdef CONFIG_ATARI_ROM_ISA 176 case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_MEM_B(addr); 177 #endif 178 default: return NULL; /* avoid warnings, just in case */ 179 } 180 } 181 static inline u16 __iomem *isa_mtw(unsigned long addr) 182 { 183 switch(ISA_TYPE) 184 { 185 #ifdef CONFIG_Q40 186 case ISA_TYPE_Q40: return (u16 __iomem *)Q40_ISA_MEM_W(addr); 187 #endif 188 #ifdef CONFIG_AMIGA_PCMCIA 189 case ISA_TYPE_AG: return (u16 __iomem *)addr; 190 #endif 191 #ifdef CONFIG_ATARI_ROM_ISA 192 case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_MEM_W(addr); 193 #endif 194 default: return NULL; /* avoid warnings, just in case */ 195 } 196 } 197 198 199 #define isa_inb(port) in_8(isa_itb(port)) 200 #define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port))) 201 #define isa_inl(port) (ISA_SEX ? in_be32(isa_itl(port)) : in_le32(isa_itl(port))) 202 #define isa_outb(val,port) out_8(isa_itb(port),(val)) 203 #define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val))) 204 #define isa_outl(val,port) (ISA_SEX ? out_be32(isa_itl(port),(val)) : out_le32(isa_itl(port),(val))) 205 206 #define isa_readb(p) in_8(isa_mtb((unsigned long)(p))) 207 #define isa_readw(p) \ 208 (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \ 209 : in_le16(isa_mtw((unsigned long)(p)))) 210 #define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val)) 211 #define isa_writew(val,p) \ 212 (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \ 213 : out_le16(isa_mtw((unsigned long)(p)),(val))) 214 215 #ifdef CONFIG_ATARI_ROM_ISA 216 #define isa_rom_inb(port) rom_in_8(isa_itb(port)) 217 #define isa_rom_inw(port) \ 218 (ISA_SEX ? rom_in_be16(isa_itw(port)) \ 219 : rom_in_le16(isa_itw(port))) 220 221 #define isa_rom_outb(val, port) rom_out_8(isa_itb(port), (val)) 222 #define isa_rom_outw(val, port) \ 223 (ISA_SEX ? rom_out_be16(isa_itw(port), (val)) \ 224 : rom_out_le16(isa_itw(port), (val))) 225 226 #define isa_rom_readb(p) rom_in_8(isa_mtb((unsigned long)(p))) 227 #define isa_rom_readw(p) \ 228 (ISA_SEX ? rom_in_be16(isa_mtw((unsigned long)(p))) \ 229 : rom_in_le16(isa_mtw((unsigned long)(p)))) 230 #define isa_rom_readw_swap(p) \ 231 (ISA_SEX ? rom_in_le16(isa_mtw((unsigned long)(p))) \ 232 : rom_in_be16(isa_mtw((unsigned long)(p)))) 233 #define isa_rom_readw_raw(p) rom_in_be16(isa_mtw((unsigned long)(p))) 234 235 #define isa_rom_writeb(val, p) rom_out_8(isa_mtb((unsigned long)(p)), (val)) 236 #define isa_rom_writew(val, p) \ 237 (ISA_SEX ? rom_out_be16(isa_mtw((unsigned long)(p)), (val)) \ 238 : rom_out_le16(isa_mtw((unsigned long)(p)), (val))) 239 #define isa_rom_writew_swap(val, p) \ 240 (ISA_SEX ? rom_out_le16(isa_mtw((unsigned long)(p)), (val)) \ 241 : rom_out_be16(isa_mtw((unsigned long)(p)), (val))) 242 #define isa_rom_writew_raw(val, p) rom_out_be16(isa_mtw((unsigned long)(p)), (val)) 243 #endif /* CONFIG_ATARI_ROM_ISA */ 244 245 static inline void isa_delay(void) 246 { 247 switch(ISA_TYPE) 248 { 249 #ifdef CONFIG_Q40 250 case ISA_TYPE_Q40: isa_outb(0,0x80); break; 251 #endif 252 #ifdef CONFIG_AMIGA_PCMCIA 253 case ISA_TYPE_AG: break; 254 #endif 255 #ifdef CONFIG_ATARI_ROM_ISA 256 case ISA_TYPE_ENEC: break; 257 #endif 258 default: break; /* avoid warnings */ 259 } 260 } 261 262 #define isa_inb_p(p) ({u8 v=isa_inb(p);isa_delay();v;}) 263 #define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();}) 264 #define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;}) 265 #define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();}) 266 #define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;}) 267 #define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();}) 268 269 #define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr)) 270 #define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr)) 271 272 #define isa_insw(port, buf, nr) \ 273 (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \ 274 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr))) 275 276 #define isa_outsw(port, buf, nr) \ 277 (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \ 278 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr))) 279 280 #define isa_insl(port, buf, nr) \ 281 (ISA_SEX ? raw_insl(isa_itl(port), (u32 *)(buf), (nr)) : \ 282 raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1)) 283 284 #define isa_outsl(port, buf, nr) \ 285 (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \ 286 raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1)) 287 288 289 #ifdef CONFIG_ATARI_ROM_ISA 290 #define isa_rom_inb_p(p) ({ u8 _v = isa_rom_inb(p); isa_delay(); _v; }) 291 #define isa_rom_inw_p(p) ({ u16 _v = isa_rom_inw(p); isa_delay(); _v; }) 292 #define isa_rom_outb_p(v, p) ({ isa_rom_outb((v), (p)); isa_delay(); }) 293 #define isa_rom_outw_p(v, p) ({ isa_rom_outw((v), (p)); isa_delay(); }) 294 295 #define isa_rom_insb(port, buf, nr) raw_rom_insb(isa_itb(port), (u8 *)(buf), (nr)) 296 297 #define isa_rom_insw(port, buf, nr) \ 298 (ISA_SEX ? raw_rom_insw(isa_itw(port), (u16 *)(buf), (nr)) : \ 299 raw_rom_insw_swapw(isa_itw(port), (u16 *)(buf), (nr))) 300 301 #define isa_rom_outsb(port, buf, nr) raw_rom_outsb(isa_itb(port), (u8 *)(buf), (nr)) 302 303 #define isa_rom_outsw(port, buf, nr) \ 304 (ISA_SEX ? raw_rom_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \ 305 raw_rom_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr))) 306 #endif /* CONFIG_ATARI_ROM_ISA */ 307 308 #endif /* CONFIG_ISA || CONFIG_ATARI_ROM_ISA */ 309 310 311 #if defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA) 312 #define inb isa_inb 313 #define inb_p isa_inb_p 314 #define outb isa_outb 315 #define outb_p isa_outb_p 316 #define inw isa_inw 317 #define inw_p isa_inw_p 318 #define outw isa_outw 319 #define outw_p isa_outw_p 320 #define inl isa_inl 321 #define inl_p isa_inl_p 322 #define outl isa_outl 323 #define outl_p isa_outl_p 324 #define insb isa_insb 325 #define insw isa_insw 326 #define insl isa_insl 327 #define outsb isa_outsb 328 #define outsw isa_outsw 329 #define outsl isa_outsl 330 #define readb isa_readb 331 #define readw isa_readw 332 #define writeb isa_writeb 333 #define writew isa_writew 334 #endif /* CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */ 335 336 #ifdef CONFIG_ATARI_ROM_ISA 337 /* 338 * kernel with both ROM port ISA and IDE compiled in, those have 339 * conflicting defs for in/out. Simply consider port < 1024 340 * ROM port ISA and everything else regular ISA for IDE. read,write defined 341 * below. 342 */ 343 #define inb(port) ((port) < 1024 ? isa_rom_inb(port) : in_8(port)) 344 #define inb_p(port) ((port) < 1024 ? isa_rom_inb_p(port) : in_8(port)) 345 #define inw(port) ((port) < 1024 ? isa_rom_inw(port) : in_le16(port)) 346 #define inw_p(port) ((port) < 1024 ? isa_rom_inw_p(port) : in_le16(port)) 347 #define inl isa_inl 348 #define inl_p isa_inl_p 349 350 #define outb(val, port) ((port) < 1024 ? isa_rom_outb((val), (port)) : out_8((port), (val))) 351 #define outb_p(val, port) ((port) < 1024 ? isa_rom_outb_p((val), (port)) : out_8((port), (val))) 352 #define outw(val, port) ((port) < 1024 ? isa_rom_outw((val), (port)) : out_le16((port), (val))) 353 #define outw_p(val, port) ((port) < 1024 ? isa_rom_outw_p((val), (port)) : out_le16((port), (val))) 354 #define outl isa_outl 355 #define outl_p isa_outl_p 356 357 #define insb(port, buf, nr) ((port) < 1024 ? isa_rom_insb((port), (buf), (nr)) : isa_insb((port), (buf), (nr))) 358 #define insw(port, buf, nr) ((port) < 1024 ? isa_rom_insw((port), (buf), (nr)) : isa_insw((port), (buf), (nr))) 359 #define insl isa_insl 360 #define outsb(port, buf, nr) ((port) < 1024 ? isa_rom_outsb((port), (buf), (nr)) : isa_outsb((port), (buf), (nr))) 361 #define outsw(port, buf, nr) ((port) < 1024 ? isa_rom_outsw((port), (buf), (nr)) : isa_outsw((port), (buf), (nr))) 362 #define outsl isa_outsl 363 364 #define readb(addr) in_8(addr) 365 #define writeb(val, addr) out_8((addr), (val)) 366 #define readw(addr) in_le16(addr) 367 #define writew(val, addr) out_le16((addr), (val)) 368 #endif /* CONFIG_ATARI_ROM_ISA */ 369 370 #define readl(addr) in_le32(addr) 371 #define writel(val,addr) out_le32((addr),(val)) 372 373 #define readsb(port, buf, nr) raw_insb((port), (u8 *)(buf), (nr)) 374 #define readsw(port, buf, nr) raw_insw((port), (u16 *)(buf), (nr)) 375 #define readsl(port, buf, nr) raw_insl((port), (u32 *)(buf), (nr)) 376 #define writesb(port, buf, nr) raw_outsb((port), (u8 *)(buf), (nr)) 377 #define writesw(port, buf, nr) raw_outsw((port), (u16 *)(buf), (nr)) 378 #define writesl(port, buf, nr) raw_outsl((port), (u32 *)(buf), (nr)) 379 380 #define mmiowb() 381 382 #ifndef CONFIG_SUN3 383 #define IO_SPACE_LIMIT 0xffff 384 #else 385 #define IO_SPACE_LIMIT 0x0fffffff 386 #endif 387 388 #endif /* __KERNEL__ */ 389 390 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1 391 392 /* 393 * Convert a physical pointer to a virtual kernel pointer for /dev/mem 394 * access 395 */ 396 #define xlate_dev_mem_ptr(p) __va(p) 397 398 /* 399 * Convert a virtual cached pointer to an uncached pointer 400 */ 401 #define xlate_dev_kmem_ptr(p) p 402 403 #define readb_relaxed(addr) readb(addr) 404 #define readw_relaxed(addr) readw(addr) 405 #define readl_relaxed(addr) readl(addr) 406 407 #define writeb_relaxed(b, addr) writeb(b, addr) 408 #define writew_relaxed(b, addr) writew(b, addr) 409 #define writel_relaxed(b, addr) writel(b, addr) 410 411 #endif /* _M68K_IO_MM_H */ 412