Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 | /* * linux/include/asm-m68k/ide.h * * Copyright (C) 1994-1996 Linus Torvalds & authors */ /* Copyright(c) 1996 Kars de Jong */ /* Based on the ide driver from 1.2.13pl8 */ /* * Credits (alphabetical): * * - Bjoern Brauel * - Kars de Jong * - Torsten Ebeling * - Dwight Engen * - Thorsten Floeck * - Roman Hodek * - Guenther Kelleter * - Chris Lawrence * - Michael Rausch * - Christian Sauer * - Michael Schmitz * - Jes Soerensen * - Michael Thurm * - Geert Uytterhoeven */ #ifndef _M68K_IDE_H #define _M68K_IDE_H #ifdef __KERNEL__ #include <linux/config.h> #ifdef CONFIG_AMIGA #include <asm/amigahw.h> #include <asm/amihdreg.h> #include <asm/amigaints.h> #endif /* CONFIG_AMIGA */ #ifdef CONFIG_ATARI #include <asm/atarihw.h> #include <asm/atarihdreg.h> #include <asm/atariints.h> #include <asm/atari_stdma.h> #endif /* CONFIG_ATARI */ #include <asm/setup.h> #include <asm/io.h> #include <asm/irq.h> typedef unsigned char * ide_ioreg_t; #ifndef MAX_HWIFS #define MAX_HWIFS 1 #endif static __inline int ide_default_irq (ide_ioreg_t base) { return 0; } static __inline__ ide_ioreg_t ide_default_io_base (int index) { if (index) return NULL; #ifdef CONFIG_AMIGA if (MACH_IS_AMIGA) { if (AMIGAHW_PRESENT(A4000_IDE)) { printk("Gayle IDE interface (A%d style)\n", 4000); return ((ide_ioreg_t)ZTWO_VADDR(HD_BASE_A4000)); } if (AMIGAHW_PRESENT(A1200_IDE)) { printk("Gayle IDE interface (A%d style)\n", 1200); return ((ide_ioreg_t)ZTWO_VADDR(HD_BASE_A1200)); } } #endif /* CONFIG_AMIGA */ #ifdef CONFIG_ATARI if (MACH_IS_ATARI) { if (ATARIHW_PRESENT(IDE)) { printk("Falcon IDE interface\n"); return ((ide_ioreg_t) ATA_HD_BASE); } } #endif /* CONFIG_ATARI */ return NULL; } static __inline__ void ide_init_hwif_ports (ide_ioreg_t *p, ide_ioreg_t base, int *irq) { *p++ = base; #ifdef CONFIG_AMIGA if (MACH_IS_AMIGA) { *p++ = base + AMI_HD_ERROR; *p++ = base + AMI_HD_NSECTOR; *p++ = base + AMI_HD_SECTOR; *p++ = base + AMI_HD_LCYL; *p++ = base + AMI_HD_HCYL; *p++ = base + AMI_HD_SELECT; *p++ = base + AMI_HD_STATUS; *p++ = base + AMI_HD_CMD; if (AMIGAHW_PRESENT(A4000_IDE)) *p++ = (ide_ioreg_t) ZTWO_VADDR(HD_A4000_IRQ); else if (AMIGAHW_PRESENT(A1200_IDE)) *p++ = (ide_ioreg_t) ZTWO_VADDR(HD_A1200_IRQ); if (irq != NULL) *irq = IRQ_AMIGA_PORTS; } #endif /* CONFIG_AMIGA */ #ifdef CONFIG_ATARI if (MACH_IS_ATARI) { *p++ = base + ATA_HD_ERROR; *p++ = base + ATA_HD_NSECTOR; *p++ = base + ATA_HD_SECTOR; *p++ = base + ATA_HD_LCYL; *p++ = base + ATA_HD_HCYL; *p++ = base + ATA_HD_CURRENT; *p++ = base + ATA_HD_STATUS; *p++ = base + ATA_HD_CMD; if (irq != NULL) *irq = IRQ_MFP_IDE; } #endif /* CONFIG_ATARI */ } typedef union { unsigned all : 8; /* all of the bits together */ struct { unsigned bit7 : 1; /* always 1 */ unsigned lba : 1; /* using LBA instead of CHS */ unsigned bit5 : 1; /* always 1 */ unsigned unit : 1; /* drive select number, 0 or 1 */ unsigned head : 4; /* always zeros here */ } b; } select_t; static __inline__ int ide_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *device, void *dev_id) { #ifdef CONFIG_AMIGA if (MACH_IS_AMIGA) return request_irq(irq, handler, 0, device, dev_id); #endif /* CONFIG_AMIGA */ return 0; } static __inline__ void ide_free_irq(unsigned int irq, void *dev_id) { #ifdef CONFIG_AMIGA if (MACH_IS_AMIGA) free_irq(irq, dev_id); #endif /* CONFIG_AMIGA */ } /* * We should really implement those some day. */ static __inline__ int ide_check_region (ide_ioreg_t from, unsigned int extent) { return 0; } static __inline__ void ide_request_region (ide_ioreg_t from, unsigned int extent, const char *name) { } static __inline__ void ide_release_region (ide_ioreg_t from, unsigned int extent) { } #undef SUPPORT_SLOW_DATA_PORTS #define SUPPORT_SLOW_DATA_PORTS 0 #undef SUPPORT_VLB_SYNC #define SUPPORT_VLB_SYNC 0 #undef HD_DATA #define HD_DATA NULL #define insl(data_reg, buffer, wcount) insw(data_reg, buffer, (wcount)<<1) #define outsl(data_reg, buffer, wcount) outsw(data_reg, buffer, (wcount)<<1) #define insw(port, buf, nr) \ if ((nr) % 16) \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ subql #1,%/d6; \ 1:movew %/a0@,%/a1@+; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6"); \ else \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ lsrl #4,%/d6; \ subql #1,%/d6; \ 1:movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6") #define outsw(port, buf, nr) \ if ((nr) % 16) \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ subql #1,%/d6; \ 1:movew %/a1@+,%/a0@; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6"); \ else \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ lsrl #4,%/d6; \ subql #1,%/d6; \ 1:movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6") #ifdef CONFIG_ATARI #define insl_swapw(data_reg, buffer, wcount) \ insw_swapw(data_reg, buffer, (wcount)<<1) #define outsl_swapw(data_reg, buffer, wcount) \ outsw_swapw(data_reg, buffer, (wcount)<<1) #define insw_swapw(port, buf, nr) \ if ((nr) % 8) \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ subql #1,%/d6; \ 1:movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "d0", "a0", "a1", "d6"); \ else \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ lsrl #3,%/d6; \ subql #1,%/d6; \ 1:movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ movew %/a0@,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a1@+; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "d0", "a0", "a1", "d6") #define outsw_swapw(port, buf, nr) \ if ((nr) % 8) \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ subql #1,%/d6; \ 1:movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "d0", "a0", "a1", "d6"); \ else \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ lsrl #3,%/d6; \ subql #1,%/d6; \ 1:movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ movew %/a1@+,%/d0; \ rolw #8,%/d0; \ movew %/d0,%/a0@; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "d0", "a0", "a1", "d6") #endif /* CONFIG_ATARI */ static __inline__ int ide_ack_intr (ide_ioreg_t base_port, ide_ioreg_t irq_port) { #ifdef CONFIG_AMIGA if (MACH_IS_AMIGA) { unsigned char ch; ch = inb(irq_port); if (!(ch & 0x80)) return(0); if (AMIGAHW_PRESENT(A1200_IDE)) { (void) inb(base_port); outb(0x7c | (ch & 0x03), irq_port); } } #endif /* CONFIG_AMIGA */ return(1); } #define T_CHAR (0x0000) /* char: don't touch */ #define T_SHORT (0x4000) /* short: 12 -> 21 */ #define T_INT (0x8000) /* int: 1234 -> 4321 */ #define T_TEXT (0xc000) /* text: 12 -> 21 */ #define T_MASK_TYPE (0xc000) #define T_MASK_COUNT (0x3fff) #define D_CHAR(cnt) (T_CHAR | (cnt)) #define D_SHORT(cnt) (T_SHORT | (cnt)) #define D_INT(cnt) (T_INT | (cnt)) #define D_TEXT(cnt) (T_TEXT | (cnt)) #ifdef CONFIG_AMIGA static u_short driveid_types[] = { D_SHORT(10), /* config - vendor2 */ D_TEXT(20), /* serial_no */ D_SHORT(3), /* buf_type - ecc_bytes */ D_TEXT(48), /* fw_rev - model */ D_CHAR(2), /* max_multsect - vendor3 */ D_SHORT(1), /* dword_io */ D_CHAR(2), /* vendor4 - capability */ D_SHORT(1), /* reserved50 */ D_CHAR(4), /* vendor5 - tDMA */ D_SHORT(4), /* field_valid - cur_sectors */ D_INT(1), /* cur_capacity */ D_CHAR(2), /* multsect - multsect_valid */ D_INT(1), /* lba_capacity */ D_SHORT(194) /* dma_1word - reservedyy */ }; #define num_driveid_types (sizeof(driveid_types)/sizeof(*driveid_types)) #endif /* CONFIG_AMIGA */ static __inline__ void ide_fix_driveid(struct hd_driveid *id) { #ifdef CONFIG_AMIGA u_char *p = (u_char *)id; int i, j, cnt; u_char t; if (!MACH_IS_AMIGA) return; for (i = 0; i < num_driveid_types; i++) { cnt = driveid_types[i] & T_MASK_COUNT; switch (driveid_types[i] & T_MASK_TYPE) { case T_CHAR: p += cnt; break; case T_SHORT: for (j = 0; j < cnt; j++) { t = p[0]; p[0] = p[1]; p[1] = t; p += 2; } break; case T_INT: for (j = 0; j < cnt; j++) { t = p[0]; p[0] = p[3]; p[3] = t; t = p[1]; p[1] = p[2]; p[2] = t; p += 4; } break; case T_TEXT: for (j = 0; j < cnt; j += 2) { t = p[0]; p[0] = p[1]; p[1] = t; p += 2; } break; } } #endif /* CONFIG_AMIGA */ } static __inline__ void ide_release_lock (int *ide_lock) { #ifdef CONFIG_ATARI if (MACH_IS_ATARI) { if (*ide_lock == 0) { printk("ide_release_lock: bug\n"); return; } *ide_lock = 0; stdma_release(); } #endif /* CONFIG_ATARI */ } static __inline__ void ide_get_lock (int *ide_lock, void (*handler)(int, void *, struct pt_regs *), void *data) { #ifdef CONFIG_ATARI if (MACH_IS_ATARI) { if (*ide_lock == 0) { if (intr_count > 0) panic( "Falcon IDE hasn't ST-DMA lock in interrupt" ); stdma_lock(handler, data); *ide_lock = 1; } } #endif /* CONFIG_ATARI */ } /* * On the Atari, we sometimes can't enable interrupts: */ /* MSch: changed sti() to STI() wherever possible in ide.c; moved STI() def. * to asm/ide.h */ /* The Atari interrupt structure strictly requires that the IPL isn't lowered * uncontrolled in an interrupt handler. In the concrete case, the IDE * interrupt is already a slow int, so the irq is already disabled at the time * the handler is called, and the IPL has been lowered to the minimum value * possible. To avoid going below that, STI() checks for being called inside * an interrupt, and in that case it does nothing. Hope that is reasonable and * works. (Roman) */ #if defined(CONFIG_ATARI) && !defined(CONFIG_AMIGA) #define ide_sti() \ do { \ if (!intr_count) sti(); \ } while(0) #elif defined(CONFIG_ATARI) #define ide_sti() \ do { \ if (!MACH_IS_ATARI || !intr_count) sti(); \ } while(0) #else /* !defined(CONFIG_ATARI) */ #define ide_sti() sti() #endif #endif /* __KERNEL__ */ #endif /* _M68K_IDE_H */ |