isa_io.c revision 1.2.4.2
1 1.2.4.2 skrll /* $NetBSD: isa_io.c,v 1.2.4.2 2005/01/17 19:29:23 skrll Exp $ */ 2 1.2.4.2 skrll 3 1.2.4.2 skrll /* 4 1.2.4.2 skrll * Copyright 1997 5 1.2.4.2 skrll * Digital Equipment Corporation. All rights reserved. 6 1.2.4.2 skrll * 7 1.2.4.2 skrll * This software is furnished under license and may be used and 8 1.2.4.2 skrll * copied only in accordance with the following terms and conditions. 9 1.2.4.2 skrll * Subject to these conditions, you may download, copy, install, 10 1.2.4.2 skrll * use, modify and distribute this software in source and/or binary 11 1.2.4.2 skrll * form. No title or ownership is transferred hereby. 12 1.2.4.2 skrll * 13 1.2.4.2 skrll * 1) Any source code used, modified or distributed must reproduce 14 1.2.4.2 skrll * and retain this copyright notice and list of conditions as 15 1.2.4.2 skrll * they appear in the source file. 16 1.2.4.2 skrll * 17 1.2.4.2 skrll * 2) No right is granted to use any trade name, trademark, or logo of 18 1.2.4.2 skrll * Digital Equipment Corporation. Neither the "Digital Equipment 19 1.2.4.2 skrll * Corporation" name nor any trademark or logo of Digital Equipment 20 1.2.4.2 skrll * Corporation may be used to endorse or promote products derived 21 1.2.4.2 skrll * from this software without the prior written permission of 22 1.2.4.2 skrll * Digital Equipment Corporation. 23 1.2.4.2 skrll * 24 1.2.4.2 skrll * 3) This software is provided "AS-IS" and any express or implied 25 1.2.4.2 skrll * warranties, including but not limited to, any implied warranties 26 1.2.4.2 skrll * of merchantability, fitness for a particular purpose, or 27 1.2.4.2 skrll * non-infringement are disclaimed. In no event shall DIGITAL be 28 1.2.4.2 skrll * liable for any damages whatsoever, and in particular, DIGITAL 29 1.2.4.2 skrll * shall not be liable for special, indirect, consequential, or 30 1.2.4.2 skrll * incidental damages or damages for lost profits, loss of 31 1.2.4.2 skrll * revenue or loss of use, whether such damages arise in contract, 32 1.2.4.2 skrll * negligence, tort, under statute, in equity, at law or otherwise, 33 1.2.4.2 skrll * even if advised of the possibility of such damage. 34 1.2.4.2 skrll */ 35 1.2.4.2 skrll 36 1.2.4.2 skrll /* 37 1.2.4.2 skrll * bus_space I/O functions for isa 38 1.2.4.2 skrll */ 39 1.2.4.2 skrll 40 1.2.4.2 skrll #include <sys/cdefs.h> 41 1.2.4.2 skrll __KERNEL_RCSID(0, "$NetBSD: isa_io.c,v 1.2.4.2 2005/01/17 19:29:23 skrll Exp $"); 42 1.2.4.2 skrll 43 1.2.4.2 skrll #include <sys/param.h> 44 1.2.4.2 skrll #include <sys/systm.h> 45 1.2.4.2 skrll #include <sys/malloc.h> 46 1.2.4.2 skrll #include <sys/extent.h> 47 1.2.4.2 skrll #include <machine/bus.h> 48 1.2.4.2 skrll #include <machine/pio.h> 49 1.2.4.2 skrll #include <machine/isa_machdep.h> 50 1.2.4.2 skrll 51 1.2.4.2 skrll /* Proto types for all the bus_space structure functions */ 52 1.2.4.2 skrll 53 1.2.4.2 skrll bs_protos(isa); 54 1.2.4.2 skrll bs_protos(bs_notimpl); 55 1.2.4.2 skrll void isa_bs_mallocok(void); 56 1.2.4.2 skrll 57 1.2.4.2 skrll /* 58 1.2.4.2 skrll * Declare the isa bus space tags 59 1.2.4.2 skrll * The IO and MEM structs are identical, except for the cookies, 60 1.2.4.2 skrll * which contain the address space bases. 61 1.2.4.2 skrll */ 62 1.2.4.2 skrll 63 1.2.4.2 skrll /* 64 1.2.4.2 skrll * NOTE: ASSEMBLY LANGUAGE RELIES ON THE COOKIE -- THE FIRST MEMBER OF 65 1.2.4.2 skrll * THIS STRUCTURE -- TO BE THE VIRTUAL ADDRESS OF 16 BIT ISA/IO! 66 1.2.4.2 skrll */ 67 1.2.4.2 skrll struct bus_space isa_io_bs_tag = { 68 1.2.4.2 skrll /* cookie */ 69 1.2.4.2 skrll NULL, /* initialized below */ 70 1.2.4.2 skrll 71 1.2.4.2 skrll /* mapping/unmapping */ 72 1.2.4.2 skrll isa_bs_map, 73 1.2.4.2 skrll isa_bs_unmap, 74 1.2.4.2 skrll isa_bs_subregion, 75 1.2.4.2 skrll 76 1.2.4.2 skrll /* allocation/deallocation */ 77 1.2.4.2 skrll isa_bs_alloc, 78 1.2.4.2 skrll isa_bs_free, 79 1.2.4.2 skrll 80 1.2.4.2 skrll /* get kernel virtual address */ 81 1.2.4.2 skrll isa_bs_vaddr, 82 1.2.4.2 skrll 83 1.2.4.2 skrll /* mmap bus space for userland */ 84 1.2.4.2 skrll bs_notimpl_bs_mmap, /* XXX possible even? XXX */ 85 1.2.4.2 skrll 86 1.2.4.2 skrll /* barrier */ 87 1.2.4.2 skrll isa_bs_barrier, 88 1.2.4.2 skrll 89 1.2.4.2 skrll /* read (single) */ 90 1.2.4.2 skrll isa_bs_r_1, 91 1.2.4.2 skrll isa_bs_r_2, 92 1.2.4.2 skrll isa_bs_r_4, 93 1.2.4.2 skrll bs_notimpl_bs_r_8, 94 1.2.4.2 skrll 95 1.2.4.2 skrll /* read multiple */ 96 1.2.4.2 skrll isa_bs_rm_1, 97 1.2.4.2 skrll isa_bs_rm_2, 98 1.2.4.2 skrll isa_bs_rm_4, 99 1.2.4.2 skrll bs_notimpl_bs_rm_8, 100 1.2.4.2 skrll 101 1.2.4.2 skrll /* read region */ 102 1.2.4.2 skrll isa_bs_rr_1, 103 1.2.4.2 skrll isa_bs_rr_2, 104 1.2.4.2 skrll isa_bs_rr_4, 105 1.2.4.2 skrll bs_notimpl_bs_rr_8, 106 1.2.4.2 skrll 107 1.2.4.2 skrll /* write (single) */ 108 1.2.4.2 skrll isa_bs_w_1, 109 1.2.4.2 skrll isa_bs_w_2, 110 1.2.4.2 skrll isa_bs_w_4, 111 1.2.4.2 skrll bs_notimpl_bs_w_8, 112 1.2.4.2 skrll 113 1.2.4.2 skrll /* write multiple */ 114 1.2.4.2 skrll isa_bs_wm_1, 115 1.2.4.2 skrll isa_bs_wm_2, 116 1.2.4.2 skrll isa_bs_wm_4, 117 1.2.4.2 skrll bs_notimpl_bs_wm_8, 118 1.2.4.2 skrll 119 1.2.4.2 skrll /* write region */ 120 1.2.4.2 skrll isa_bs_wr_1, 121 1.2.4.2 skrll isa_bs_wr_2, 122 1.2.4.2 skrll isa_bs_wr_4, 123 1.2.4.2 skrll bs_notimpl_bs_wr_8, 124 1.2.4.2 skrll 125 1.2.4.2 skrll /* set multiple */ 126 1.2.4.2 skrll bs_notimpl_bs_sm_1, 127 1.2.4.2 skrll bs_notimpl_bs_sm_2, 128 1.2.4.2 skrll bs_notimpl_bs_sm_4, 129 1.2.4.2 skrll bs_notimpl_bs_sm_8, 130 1.2.4.2 skrll 131 1.2.4.2 skrll /* set region */ 132 1.2.4.2 skrll bs_notimpl_bs_sr_1, 133 1.2.4.2 skrll isa_bs_sr_2, 134 1.2.4.2 skrll bs_notimpl_bs_sr_4, 135 1.2.4.2 skrll bs_notimpl_bs_sr_8, 136 1.2.4.2 skrll 137 1.2.4.2 skrll /* copy */ 138 1.2.4.2 skrll bs_notimpl_bs_c_1, 139 1.2.4.2 skrll bs_notimpl_bs_c_2, 140 1.2.4.2 skrll bs_notimpl_bs_c_4, 141 1.2.4.2 skrll bs_notimpl_bs_c_8, 142 1.2.4.2 skrll }; 143 1.2.4.2 skrll 144 1.2.4.2 skrll /* 145 1.2.4.2 skrll * NOTE: ASSEMBLY LANGUAGE RELIES ON THE COOKIE -- THE FIRST MEMBER OF 146 1.2.4.2 skrll * THIS STRUCTURE -- TO BE THE VIRTUAL ADDRESS OF ISA/MEMORY! 147 1.2.4.2 skrll */ 148 1.2.4.2 skrll struct bus_space isa_mem_bs_tag = { 149 1.2.4.2 skrll /* cookie */ 150 1.2.4.2 skrll NULL, /* initialized below */ 151 1.2.4.2 skrll 152 1.2.4.2 skrll /* mapping/unmapping */ 153 1.2.4.2 skrll isa_bs_map, 154 1.2.4.2 skrll isa_bs_unmap, 155 1.2.4.2 skrll isa_bs_subregion, 156 1.2.4.2 skrll 157 1.2.4.2 skrll /* allocation/deallocation */ 158 1.2.4.2 skrll isa_bs_alloc, 159 1.2.4.2 skrll isa_bs_free, 160 1.2.4.2 skrll 161 1.2.4.2 skrll /* get kernel virtual address */ 162 1.2.4.2 skrll isa_bs_vaddr, 163 1.2.4.2 skrll 164 1.2.4.2 skrll /* mmap bus space for userland */ 165 1.2.4.2 skrll bs_notimpl_bs_mmap, /* XXX open for now ... XXX */ 166 1.2.4.2 skrll 167 1.2.4.2 skrll /* barrier */ 168 1.2.4.2 skrll isa_bs_barrier, 169 1.2.4.2 skrll 170 1.2.4.2 skrll /* read (single) */ 171 1.2.4.2 skrll isa_bs_r_1, 172 1.2.4.2 skrll isa_bs_r_2, 173 1.2.4.2 skrll isa_bs_r_4, 174 1.2.4.2 skrll bs_notimpl_bs_r_8, 175 1.2.4.2 skrll 176 1.2.4.2 skrll /* read multiple */ 177 1.2.4.2 skrll isa_bs_rm_1, 178 1.2.4.2 skrll isa_bs_rm_2, 179 1.2.4.2 skrll isa_bs_rm_4, 180 1.2.4.2 skrll bs_notimpl_bs_rm_8, 181 1.2.4.2 skrll 182 1.2.4.2 skrll /* read region */ 183 1.2.4.2 skrll isa_bs_rr_1, 184 1.2.4.2 skrll isa_bs_rr_2, 185 1.2.4.2 skrll isa_bs_rr_4, 186 1.2.4.2 skrll bs_notimpl_bs_rr_8, 187 1.2.4.2 skrll 188 1.2.4.2 skrll /* write (single) */ 189 1.2.4.2 skrll isa_bs_w_1, 190 1.2.4.2 skrll isa_bs_w_2, 191 1.2.4.2 skrll isa_bs_w_4, 192 1.2.4.2 skrll bs_notimpl_bs_w_8, 193 1.2.4.2 skrll 194 1.2.4.2 skrll /* write multiple */ 195 1.2.4.2 skrll isa_bs_wm_1, 196 1.2.4.2 skrll isa_bs_wm_2, 197 1.2.4.2 skrll isa_bs_wm_4, 198 1.2.4.2 skrll bs_notimpl_bs_wm_8, 199 1.2.4.2 skrll 200 1.2.4.2 skrll /* write region */ 201 1.2.4.2 skrll isa_bs_wr_1, 202 1.2.4.2 skrll isa_bs_wr_2, 203 1.2.4.2 skrll isa_bs_wr_4, 204 1.2.4.2 skrll bs_notimpl_bs_wr_8, 205 1.2.4.2 skrll 206 1.2.4.2 skrll /* set multiple */ 207 1.2.4.2 skrll bs_notimpl_bs_sm_1, 208 1.2.4.2 skrll bs_notimpl_bs_sm_2, 209 1.2.4.2 skrll bs_notimpl_bs_sm_4, 210 1.2.4.2 skrll bs_notimpl_bs_sm_8, 211 1.2.4.2 skrll 212 1.2.4.2 skrll /* set region */ 213 1.2.4.2 skrll bs_notimpl_bs_sr_1, 214 1.2.4.2 skrll isa_bs_sr_2, 215 1.2.4.2 skrll bs_notimpl_bs_sr_4, 216 1.2.4.2 skrll bs_notimpl_bs_sr_8, 217 1.2.4.2 skrll 218 1.2.4.2 skrll /* copy */ 219 1.2.4.2 skrll bs_notimpl_bs_c_1, 220 1.2.4.2 skrll bs_notimpl_bs_c_2, 221 1.2.4.2 skrll bs_notimpl_bs_c_4, 222 1.2.4.2 skrll bs_notimpl_bs_c_8, 223 1.2.4.2 skrll }; 224 1.2.4.2 skrll 225 1.2.4.2 skrll static long isaio_ex_storage[EXTENT_FIXED_STORAGE_SIZE(8) / sizeof(long)]; 226 1.2.4.2 skrll static long isamem_ex_storage[EXTENT_FIXED_STORAGE_SIZE(8) / sizeof(long)]; 227 1.2.4.2 skrll static int malloc_safe = 0; 228 1.2.4.2 skrll struct extent *isaio_ex; 229 1.2.4.2 skrll struct extent *isamem_ex; 230 1.2.4.2 skrll 231 1.2.4.2 skrll void 232 1.2.4.2 skrll isa_bs_mallocok(void) 233 1.2.4.2 skrll { 234 1.2.4.2 skrll malloc_safe = 1; 235 1.2.4.2 skrll } 236 1.2.4.2 skrll 237 1.2.4.2 skrll /* bus space functions */ 238 1.2.4.2 skrll 239 1.2.4.2 skrll void 240 1.2.4.2 skrll isa_io_init(isa_io_addr, isa_mem_addr) 241 1.2.4.2 skrll vm_offset_t isa_io_addr; 242 1.2.4.2 skrll vm_offset_t isa_mem_addr; 243 1.2.4.2 skrll { 244 1.2.4.2 skrll isa_io_bs_tag.bs_cookie = (void *)isa_io_addr; 245 1.2.4.2 skrll isa_mem_bs_tag.bs_cookie = (void *)isa_mem_addr; 246 1.2.4.2 skrll 247 1.2.4.2 skrll isaio_ex = extent_create("isaio", 0x0, 0xffff, M_DEVBUF, 248 1.2.4.2 skrll (caddr_t)isaio_ex_storage, sizeof(isaio_ex_storage), 249 1.2.4.2 skrll EX_NOWAIT|EX_NOCOALESCE); 250 1.2.4.2 skrll isamem_ex = extent_create("isamem", 0x0, 0xfffff, M_DEVBUF, 251 1.2.4.2 skrll (caddr_t)isamem_ex_storage, sizeof(isamem_ex_storage), 252 1.2.4.2 skrll EX_NOWAIT|EX_NOCOALESCE); 253 1.2.4.2 skrll if (isaio_ex == NULL || isamem_ex == NULL) 254 1.2.4.2 skrll panic("isa_io_init(): can't alloc extent maps"); 255 1.2.4.2 skrll } 256 1.2.4.2 skrll 257 1.2.4.2 skrll /* 258 1.2.4.2 skrll * break the abstraction: sometimes, other parts of the system 259 1.2.4.2 skrll * (e.g. X servers) need to map ISA space directly. use these 260 1.2.4.2 skrll * functions sparingly! 261 1.2.4.2 skrll */ 262 1.2.4.2 skrll vm_offset_t 263 1.2.4.2 skrll isa_io_data_vaddr(void) 264 1.2.4.2 skrll { 265 1.2.4.2 skrll return (vm_offset_t)isa_io_bs_tag.bs_cookie; 266 1.2.4.2 skrll } 267 1.2.4.2 skrll 268 1.2.4.2 skrll vm_offset_t 269 1.2.4.2 skrll isa_mem_data_vaddr(void) 270 1.2.4.2 skrll { 271 1.2.4.2 skrll return (vm_offset_t)isa_mem_bs_tag.bs_cookie; 272 1.2.4.2 skrll } 273 1.2.4.2 skrll 274 1.2.4.2 skrll int 275 1.2.4.2 skrll isa_bs_map(t, bpa, size, cacheable, bshp) 276 1.2.4.2 skrll void *t; 277 1.2.4.2 skrll bus_addr_t bpa; 278 1.2.4.2 skrll bus_size_t size; 279 1.2.4.2 skrll int cacheable; 280 1.2.4.2 skrll bus_space_handle_t *bshp; 281 1.2.4.2 skrll { 282 1.2.4.2 skrll struct extent *ex; 283 1.2.4.2 skrll int err; 284 1.2.4.2 skrll 285 1.2.4.2 skrll if (t == &isa_io_bs_tag) 286 1.2.4.2 skrll ex = isaio_ex; 287 1.2.4.2 skrll else 288 1.2.4.2 skrll ex = isamem_ex; 289 1.2.4.2 skrll 290 1.2.4.2 skrll err = extent_alloc_region(ex, bpa, size, 291 1.2.4.2 skrll EX_NOWAIT|(malloc_safe ? EX_MALLOCOK : 0)); 292 1.2.4.2 skrll if (err) 293 1.2.4.2 skrll return err; 294 1.2.4.2 skrll 295 1.2.4.2 skrll *bshp = bpa + (bus_addr_t)t; 296 1.2.4.2 skrll return(0); 297 1.2.4.2 skrll } 298 1.2.4.2 skrll 299 1.2.4.2 skrll void 300 1.2.4.2 skrll isa_bs_unmap(t, bsh, size) 301 1.2.4.2 skrll void *t; 302 1.2.4.2 skrll bus_space_handle_t bsh; 303 1.2.4.2 skrll bus_size_t size; 304 1.2.4.2 skrll { 305 1.2.4.2 skrll isa_bs_free(t, bsh, size); 306 1.2.4.2 skrll } 307 1.2.4.2 skrll 308 1.2.4.2 skrll int 309 1.2.4.2 skrll isa_bs_subregion(t, bsh, offset, size, nbshp) 310 1.2.4.2 skrll void *t; 311 1.2.4.2 skrll bus_space_handle_t bsh; 312 1.2.4.2 skrll bus_size_t offset, size; 313 1.2.4.2 skrll bus_space_handle_t *nbshp; 314 1.2.4.2 skrll { 315 1.2.4.2 skrll /* printf("isa_subregion(tag=%p, bsh=%lx, off=%lx, sz=%lx)\n", 316 1.2.4.2 skrll t, bsh, offset, size);*/ 317 1.2.4.2 skrll *nbshp = bsh + offset; 318 1.2.4.2 skrll return(0); 319 1.2.4.2 skrll } 320 1.2.4.2 skrll 321 1.2.4.2 skrll int 322 1.2.4.2 skrll isa_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable, 323 1.2.4.2 skrll bpap, bshp) 324 1.2.4.2 skrll void *t; 325 1.2.4.2 skrll bus_addr_t rstart, rend; 326 1.2.4.2 skrll bus_size_t size, alignment, boundary; 327 1.2.4.2 skrll int cacheable; 328 1.2.4.2 skrll bus_addr_t *bpap; 329 1.2.4.2 skrll bus_space_handle_t *bshp; 330 1.2.4.2 skrll { 331 1.2.4.2 skrll struct extent *ex; 332 1.2.4.2 skrll u_long bpa; 333 1.2.4.2 skrll int err; 334 1.2.4.2 skrll 335 1.2.4.2 skrll if (t == &isa_io_bs_tag) 336 1.2.4.2 skrll ex = isaio_ex; 337 1.2.4.2 skrll else 338 1.2.4.2 skrll ex = isamem_ex; 339 1.2.4.2 skrll 340 1.2.4.2 skrll err = extent_alloc_subregion(ex, rstart, rend, size, alignment, 341 1.2.4.2 skrll boundary, (EX_FAST|EX_NOWAIT|(malloc_safe ? EX_MALLOCOK : 0)), 342 1.2.4.2 skrll &bpa); 343 1.2.4.2 skrll 344 1.2.4.2 skrll if (err) 345 1.2.4.2 skrll return err; 346 1.2.4.2 skrll 347 1.2.4.2 skrll *bshp = *bpap = bpa; 348 1.2.4.2 skrll return 0; 349 1.2.4.2 skrll } 350 1.2.4.2 skrll 351 1.2.4.2 skrll void 352 1.2.4.2 skrll isa_bs_free(t, bsh, size) 353 1.2.4.2 skrll void *t; 354 1.2.4.2 skrll bus_space_handle_t bsh; 355 1.2.4.2 skrll bus_size_t size; 356 1.2.4.2 skrll { 357 1.2.4.2 skrll struct extent *ex; 358 1.2.4.2 skrll 359 1.2.4.2 skrll if (t == &isa_io_bs_tag) 360 1.2.4.2 skrll ex = isaio_ex; 361 1.2.4.2 skrll else 362 1.2.4.2 skrll ex = isamem_ex; 363 1.2.4.2 skrll 364 1.2.4.2 skrll extent_free(ex, bsh - (bus_addr_t)t, size, 365 1.2.4.2 skrll EX_NOWAIT|(malloc_safe ? EX_MALLOCOK : 0)); 366 1.2.4.2 skrll } 367 1.2.4.2 skrll 368 1.2.4.2 skrll void * 369 1.2.4.2 skrll isa_bs_vaddr(t, bsh) 370 1.2.4.2 skrll void *t; 371 1.2.4.2 skrll bus_space_handle_t bsh; 372 1.2.4.2 skrll { 373 1.2.4.2 skrll 374 1.2.4.2 skrll return ((void *)bsh); 375 1.2.4.2 skrll } 376 1.2.4.2 skrll 377 1.2.4.2 skrll void 378 1.2.4.2 skrll isa_bs_barrier(t, bsh, offset, len, flags) 379 1.2.4.2 skrll void *t; 380 1.2.4.2 skrll bus_space_handle_t bsh; 381 1.2.4.2 skrll bus_size_t offset, len; 382 1.2.4.2 skrll int flags; 383 1.2.4.2 skrll { 384 1.2.4.2 skrll /* just return */ 385 1.2.4.2 skrll } 386
Indexes created Fri Oct 03 17:10:05 GMT 2025