apbus.c revision 1.4.2.3
1 1.4.2.3 bouyer /* $NetBSD: apbus.c,v 1.4.2.3 2000/12/08 09:28:49 bouyer Exp $ */ 2 1.4.2.2 bouyer 3 1.4.2.2 bouyer /*- 4 1.4.2.2 bouyer * Copyright (C) 1999 SHIMIZU Ryo. All rights reserved. 5 1.4.2.2 bouyer * 6 1.4.2.2 bouyer * Redistribution and use in source and binary forms, with or without 7 1.4.2.2 bouyer * modification, are permitted provided that the following conditions 8 1.4.2.2 bouyer * are met: 9 1.4.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 10 1.4.2.2 bouyer * notice, this list of conditions and the following disclaimer. 11 1.4.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 12 1.4.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 13 1.4.2.2 bouyer * documentation and/or other materials provided with the distribution. 14 1.4.2.2 bouyer * 3. The name of the author may not be used to endorse or promote products 15 1.4.2.2 bouyer * derived from this software without specific prior written permission. 16 1.4.2.2 bouyer * 17 1.4.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 1.4.2.2 bouyer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 1.4.2.2 bouyer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 1.4.2.2 bouyer * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 1.4.2.2 bouyer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 1.4.2.2 bouyer * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 1.4.2.2 bouyer * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 1.4.2.2 bouyer * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 1.4.2.2 bouyer * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 1.4.2.2 bouyer * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 1.4.2.2 bouyer */ 28 1.4.2.2 bouyer 29 1.4.2.2 bouyer #include <sys/param.h> 30 1.4.2.2 bouyer #include <sys/systm.h> 31 1.4.2.2 bouyer #include <sys/malloc.h> 32 1.4.2.2 bouyer #include <sys/device.h> 33 1.4.2.2 bouyer 34 1.4.2.2 bouyer #include <uvm/uvm_extern.h> 35 1.4.2.2 bouyer 36 1.4.2.2 bouyer #include <machine/adrsmap.h> 37 1.4.2.2 bouyer #include <machine/autoconf.h> 38 1.4.2.2 bouyer #define _NEWSMIPS_BUS_DMA_PRIVATE 39 1.4.2.2 bouyer #include <machine/bus.h> 40 1.4.2.2 bouyer #include <newsmips/apbus/apbusvar.h> 41 1.4.2.2 bouyer 42 1.4.2.3 bouyer static int apbusmatch (struct device *, struct cfdata *, void *); 43 1.4.2.3 bouyer static void apbusattach (struct device *, struct device *, void *); 44 1.4.2.3 bouyer static int apbusprint (void *, const char *); 45 1.4.2.3 bouyer /* static void *aptokseg0 (void *); */ 46 1.4.2.3 bouyer static void apbus_dma_unmapped (bus_dma_tag_t, bus_dmamap_t); 47 1.4.2.3 bouyer static int apbus_dma_mapalloc (bus_dma_tag_t, bus_dmamap_t, int); 48 1.4.2.3 bouyer static void apbus_dma_mapfree (bus_dma_tag_t, bus_dmamap_t); 49 1.4.2.3 bouyer static void apbus_dma_mapset (bus_dma_tag_t, bus_dmamap_t); 50 1.4.2.3 bouyer static int apbus_dmamap_create (bus_dma_tag_t, bus_size_t, int, bus_size_t, 51 1.4.2.3 bouyer bus_size_t, int, bus_dmamap_t *); 52 1.4.2.3 bouyer static void apbus_dmamap_destroy (bus_dma_tag_t, bus_dmamap_t); 53 1.4.2.3 bouyer static int apbus_dmamap_load (bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t, 54 1.4.2.3 bouyer struct proc *, int); 55 1.4.2.3 bouyer static int apbus_dmamap_load_mbuf (bus_dma_tag_t, bus_dmamap_t, struct mbuf *, 56 1.4.2.3 bouyer int); 57 1.4.2.3 bouyer static int apbus_dmamap_load_uio (bus_dma_tag_t, bus_dmamap_t, struct uio *, 58 1.4.2.3 bouyer int); 59 1.4.2.3 bouyer static int apbus_dmamap_load_raw (bus_dma_tag_t, bus_dmamap_t, 60 1.4.2.3 bouyer bus_dma_segment_t *, int, bus_size_t, int); 61 1.4.2.3 bouyer static void apbus_dmamap_sync (bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 62 1.4.2.3 bouyer bus_size_t, int); 63 1.4.2.2 bouyer 64 1.4.2.2 bouyer #define MAXAPDEVNUM 32 65 1.4.2.2 bouyer 66 1.4.2.2 bouyer struct apbus_softc { 67 1.4.2.2 bouyer struct device apbs_dev; 68 1.4.2.2 bouyer }; 69 1.4.2.2 bouyer 70 1.4.2.2 bouyer struct cfattach ap_ca = { 71 1.4.2.2 bouyer sizeof(struct apbus_softc), apbusmatch, apbusattach 72 1.4.2.2 bouyer }; 73 1.4.2.2 bouyer 74 1.4.2.2 bouyer #define APBUS_DEVNAMELEN 16 75 1.4.2.2 bouyer 76 1.4.2.2 bouyer struct ap_intrhand { 77 1.4.2.2 bouyer struct ap_intrhand *ai_next; 78 1.4.2.2 bouyer int ai_mask; 79 1.4.2.2 bouyer int ai_priority; 80 1.4.2.3 bouyer int (*ai_func) (void*); /* function */ 81 1.4.2.2 bouyer void *ai_aux; /* softc */ 82 1.4.2.2 bouyer char ai_name[APBUS_DEVNAMELEN]; 83 1.4.2.2 bouyer int ai_ctlno; 84 1.4.2.2 bouyer }; 85 1.4.2.2 bouyer 86 1.4.2.2 bouyer #define NLEVEL 2 87 1.4.2.2 bouyer 88 1.4.2.2 bouyer static struct ap_intrhand *apintr[NLEVEL]; 89 1.4.2.2 bouyer 90 1.4.2.2 bouyer static int 91 1.4.2.2 bouyer apbusmatch(parent, cfdata, aux) 92 1.4.2.2 bouyer struct device *parent; 93 1.4.2.2 bouyer struct cfdata *cfdata; 94 1.4.2.2 bouyer void *aux; 95 1.4.2.2 bouyer { 96 1.4.2.2 bouyer struct confargs *ca = aux; 97 1.4.2.2 bouyer 98 1.4.2.2 bouyer if (strcmp(ca->ca_name, "ap") != 0) 99 1.4.2.2 bouyer return 0; 100 1.4.2.2 bouyer 101 1.4.2.2 bouyer return 1; 102 1.4.2.2 bouyer } 103 1.4.2.2 bouyer 104 1.4.2.2 bouyer 105 1.4.2.2 bouyer static void 106 1.4.2.2 bouyer apbusattach(parent, self, aux) 107 1.4.2.2 bouyer struct device *parent; 108 1.4.2.2 bouyer struct device *self; 109 1.4.2.2 bouyer void *aux; 110 1.4.2.2 bouyer { 111 1.4.2.2 bouyer struct apbus_attach_args child; 112 1.4.2.2 bouyer struct apbus_dev *apdev; 113 1.4.2.2 bouyer struct apbus_ctl *apctl; 114 1.4.2.2 bouyer 115 1.4.2.2 bouyer *(volatile u_int *)(NEWS5000_APBUS_INTST) = 0xffffffff; 116 1.4.2.2 bouyer *(volatile u_int *)(NEWS5000_APBUS_INTMSK) = 0xffffffff; 117 1.4.2.2 bouyer *(volatile u_int *)(NEWS5000_APBUS_CTRL) = 0x00000004; 118 1.4.2.2 bouyer *(volatile u_int *)(NEWS5000_APBUS_DMA) = 0xffffffff; 119 1.4.2.2 bouyer 120 1.4.2.2 bouyer printf("\n"); 121 1.4.2.2 bouyer 122 1.4.2.2 bouyer /* 123 1.4.2.2 bouyer * get first ap-device 124 1.4.2.2 bouyer */ 125 1.4.2.2 bouyer apdev = apbus_lookupdev(NULL); 126 1.4.2.2 bouyer 127 1.4.2.2 bouyer /* 128 1.4.2.2 bouyer * trace device chain 129 1.4.2.2 bouyer */ 130 1.4.2.2 bouyer while (apdev) { 131 1.4.2.2 bouyer apctl = apdev->apbd_ctl; 132 1.4.2.2 bouyer 133 1.4.2.2 bouyer /* 134 1.4.2.2 bouyer * probe physical device only 135 1.4.2.2 bouyer * (no pseudo device) 136 1.4.2.2 bouyer */ 137 1.4.2.2 bouyer if (apctl && apctl->apbc_hwbase) { 138 1.4.2.2 bouyer /* 139 1.4.2.2 bouyer * ... and, all units 140 1.4.2.2 bouyer */ 141 1.4.2.2 bouyer while (apctl) { 142 1.4.2.2 bouyer /* make apbus_attach_args for devices */ 143 1.4.2.2 bouyer child.apa_name = apdev->apbd_name; 144 1.4.2.2 bouyer child.apa_ctlnum = apctl->apbc_ctlno; 145 1.4.2.2 bouyer child.apa_slotno = apctl->apbc_sl; 146 1.4.2.2 bouyer child.apa_hwbase = apctl->apbc_hwbase; 147 1.4.2.2 bouyer 148 1.4.2.2 bouyer config_found(self, &child, apbusprint); 149 1.4.2.2 bouyer 150 1.4.2.2 bouyer apctl = apctl->apbc_link; 151 1.4.2.2 bouyer } 152 1.4.2.2 bouyer } 153 1.4.2.2 bouyer 154 1.4.2.2 bouyer apdev = apdev->apbd_link; 155 1.4.2.2 bouyer } 156 1.4.2.2 bouyer } 157 1.4.2.2 bouyer 158 1.4.2.2 bouyer int 159 1.4.2.2 bouyer apbusprint(aux, pnp) 160 1.4.2.2 bouyer void *aux; 161 1.4.2.2 bouyer const char *pnp; 162 1.4.2.2 bouyer { 163 1.4.2.2 bouyer struct apbus_attach_args *a = aux; 164 1.4.2.2 bouyer 165 1.4.2.2 bouyer if (pnp) 166 1.4.2.2 bouyer printf("%s at %s slot%d addr 0x%lx", 167 1.4.2.2 bouyer a->apa_name, pnp, a->apa_slotno, a->apa_hwbase); 168 1.4.2.2 bouyer 169 1.4.2.2 bouyer return UNCONF; 170 1.4.2.2 bouyer } 171 1.4.2.2 bouyer 172 1.4.2.2 bouyer #if 0 173 1.4.2.2 bouyer void * 174 1.4.2.2 bouyer aptokseg0(va) 175 1.4.2.2 bouyer void *va; 176 1.4.2.2 bouyer { 177 1.4.2.2 bouyer vaddr_t addr = (vaddr_t)va; 178 1.4.2.2 bouyer 179 1.4.2.2 bouyer if (addr >= 0xfff00000) { 180 1.4.2.2 bouyer addr -= 0xfff00000; 181 1.4.2.2 bouyer addr += physmem << PGSHIFT; 182 1.4.2.2 bouyer addr += 0x80000000; 183 1.4.2.2 bouyer va = (void *)addr; 184 1.4.2.2 bouyer } 185 1.4.2.2 bouyer return va; 186 1.4.2.2 bouyer } 187 1.4.2.2 bouyer #endif 188 1.4.2.2 bouyer 189 1.4.2.2 bouyer void 190 1.4.2.2 bouyer apbus_wbflush() 191 1.4.2.2 bouyer { 192 1.4.2.2 bouyer volatile int *wbflush = (int *)NEWS5000_WBFLUSH; 193 1.4.2.2 bouyer 194 1.4.2.2 bouyer (void)*wbflush; 195 1.4.2.2 bouyer } 196 1.4.2.2 bouyer 197 1.4.2.2 bouyer /* 198 1.4.2.2 bouyer * called by hardware interrupt routine 199 1.4.2.2 bouyer */ 200 1.4.2.2 bouyer int 201 1.4.2.2 bouyer apbus_intr_call(level, stat) 202 1.4.2.2 bouyer int level; 203 1.4.2.2 bouyer int stat; 204 1.4.2.2 bouyer { 205 1.4.2.2 bouyer int nintr = 0; 206 1.4.2.2 bouyer struct ap_intrhand *ai; 207 1.4.2.2 bouyer 208 1.4.2.2 bouyer for (ai = apintr[level]; ai != NULL; ai = ai->ai_next) { 209 1.4.2.2 bouyer if (ai->ai_mask & stat) { 210 1.4.2.2 bouyer nintr += (*ai->ai_func)(ai->ai_aux); 211 1.4.2.2 bouyer } 212 1.4.2.2 bouyer } 213 1.4.2.2 bouyer return nintr; 214 1.4.2.2 bouyer } 215 1.4.2.2 bouyer 216 1.4.2.2 bouyer /* 217 1.4.2.2 bouyer * register device interrupt routine 218 1.4.2.2 bouyer */ 219 1.4.2.2 bouyer void * 220 1.4.2.2 bouyer apbus_intr_establish(level, mask, priority, func, aux, name, ctlno) 221 1.4.2.2 bouyer int level; 222 1.4.2.2 bouyer int mask; 223 1.4.2.2 bouyer int priority; 224 1.4.2.3 bouyer int (*func) (void *); 225 1.4.2.2 bouyer void *aux; 226 1.4.2.2 bouyer char *name; 227 1.4.2.2 bouyer int ctlno; 228 1.4.2.2 bouyer { 229 1.4.2.2 bouyer struct ap_intrhand *ai, **aip; 230 1.4.2.2 bouyer volatile unsigned int *inten0 = (volatile unsigned int *)NEWS5000_INTEN0; 231 1.4.2.2 bouyer volatile unsigned int *inten1 = (volatile unsigned int *)NEWS5000_INTEN1; 232 1.4.2.2 bouyer 233 1.4.2.2 bouyer ai = malloc(sizeof(*ai), M_DEVBUF, M_NOWAIT); 234 1.4.2.2 bouyer if (ai == NULL) 235 1.4.2.2 bouyer panic("apbus_intr_establish: can't malloc handler info"); 236 1.4.2.2 bouyer ai->ai_mask = mask; 237 1.4.2.2 bouyer ai->ai_priority = priority; 238 1.4.2.2 bouyer ai->ai_func = func; 239 1.4.2.2 bouyer ai->ai_aux = aux; 240 1.4.2.2 bouyer strncpy(ai->ai_name, name, APBUS_DEVNAMELEN-1); 241 1.4.2.2 bouyer ai->ai_ctlno = ctlno; 242 1.4.2.2 bouyer 243 1.4.2.2 bouyer for (aip = &apintr[level]; *aip != NULL; aip = &(*aip)->ai_next) { 244 1.4.2.2 bouyer if ((*aip)->ai_priority < priority) 245 1.4.2.2 bouyer break; 246 1.4.2.2 bouyer } 247 1.4.2.2 bouyer ai->ai_next = *aip; 248 1.4.2.2 bouyer *aip = ai; 249 1.4.2.2 bouyer switch (level) { 250 1.4.2.2 bouyer case 0: 251 1.4.2.2 bouyer *inten0 |= mask; 252 1.4.2.2 bouyer break; 253 1.4.2.2 bouyer case 1: 254 1.4.2.2 bouyer *inten1 |= mask; 255 1.4.2.2 bouyer break; 256 1.4.2.2 bouyer } 257 1.4.2.2 bouyer 258 1.4.2.2 bouyer return (void *)ai; 259 1.4.2.2 bouyer } 260 1.4.2.2 bouyer 261 1.4.2.2 bouyer static void 262 1.4.2.2 bouyer apbus_dma_unmapped(t, map) 263 1.4.2.2 bouyer bus_dma_tag_t t; 264 1.4.2.2 bouyer bus_dmamap_t map; 265 1.4.2.2 bouyer { 266 1.4.2.2 bouyer int seg; 267 1.4.2.2 bouyer 268 1.4.2.2 bouyer for (seg = 0; seg < map->dm_nsegs; seg++) { 269 1.4.2.2 bouyer /* 270 1.4.2.2 bouyer * set MSB to indicate unmapped DMA. 271 1.4.2.2 bouyer * also need bit 30 for memory over 256MB. 272 1.4.2.2 bouyer */ 273 1.4.2.2 bouyer if ((map->dm_segs[seg].ds_addr & 0x30000000) == 0) 274 1.4.2.2 bouyer map->dm_segs[seg].ds_addr |= 0x80000000; 275 1.4.2.2 bouyer else 276 1.4.2.2 bouyer map->dm_segs[seg].ds_addr |= 0xc0000000; 277 1.4.2.2 bouyer } 278 1.4.2.2 bouyer } 279 1.4.2.2 bouyer 280 1.4.2.2 bouyer #define APBUS_NDMAMAP (NEWS5000_APBUS_MAPSIZE / NEWS5000_APBUS_MAPENT) 281 1.4.2.2 bouyer #define APBUS_MAPTBL(n, v) (*(volatile u_int *)(NEWS5000_APBUS_DMAMAP + \ 282 1.4.2.2 bouyer NEWS5000_APBUS_MAPENT * (n) + 1) = (v)) 283 1.4.2.2 bouyer static u_char apbus_dma_maptbl[APBUS_NDMAMAP]; 284 1.4.2.2 bouyer 285 1.4.2.2 bouyer static int 286 1.4.2.2 bouyer apbus_dma_mapalloc(t, map, flags) 287 1.4.2.2 bouyer bus_dma_tag_t t; 288 1.4.2.2 bouyer bus_dmamap_t map; 289 1.4.2.2 bouyer int flags; 290 1.4.2.2 bouyer { 291 1.4.2.2 bouyer int i, j, cnt; 292 1.4.2.2 bouyer 293 1.4.2.2 bouyer cnt = round_page(map->_dm_size) / NBPG; 294 1.4.2.2 bouyer 295 1.4.2.2 bouyer again: 296 1.4.2.2 bouyer for (i = 0; i < APBUS_NDMAMAP; i += j + 1) { 297 1.4.2.2 bouyer for (j = 0; j < cnt; j++) { 298 1.4.2.2 bouyer if (apbus_dma_maptbl[i + j]) 299 1.4.2.2 bouyer break; 300 1.4.2.2 bouyer } 301 1.4.2.2 bouyer if (j == cnt) { 302 1.4.2.2 bouyer for (j = 0; j < cnt; j++) 303 1.4.2.2 bouyer apbus_dma_maptbl[i + j] = 1; 304 1.4.2.2 bouyer map->_dm_maptbl = i; 305 1.4.2.2 bouyer map->_dm_maptblcnt = cnt; 306 1.4.2.2 bouyer return 0; 307 1.4.2.2 bouyer } 308 1.4.2.2 bouyer } 309 1.4.2.2 bouyer if ((flags & BUS_DMA_NOWAIT) == 0) { 310 1.4.2.2 bouyer tsleep(&apbus_dma_maptbl, PRIBIO, "apdmat", 0); 311 1.4.2.2 bouyer goto again; 312 1.4.2.2 bouyer } 313 1.4.2.2 bouyer return ENOMEM; 314 1.4.2.2 bouyer } 315 1.4.2.2 bouyer 316 1.4.2.2 bouyer static void 317 1.4.2.2 bouyer apbus_dma_mapfree(t, map) 318 1.4.2.2 bouyer bus_dma_tag_t t; 319 1.4.2.2 bouyer bus_dmamap_t map; 320 1.4.2.2 bouyer { 321 1.4.2.2 bouyer int i, n; 322 1.4.2.2 bouyer 323 1.4.2.2 bouyer if (map->_dm_maptblcnt > 0) { 324 1.4.2.2 bouyer n = map->_dm_maptbl; 325 1.4.2.2 bouyer for (i = 0; i < map->_dm_maptblcnt; i++, n++) { 326 1.4.2.2 bouyer #ifdef DIAGNOSTIC 327 1.4.2.2 bouyer if (apbus_dma_maptbl[n] == 0) 328 1.4.2.2 bouyer panic("freeing free dma map"); 329 1.4.2.2 bouyer APBUS_MAPTBL(n, 0xffffffff); /* causes DMA error */ 330 1.4.2.2 bouyer #endif 331 1.4.2.2 bouyer apbus_dma_maptbl[n] = 0; 332 1.4.2.2 bouyer } 333 1.4.2.2 bouyer wakeup(&apbus_dma_maptbl); 334 1.4.2.2 bouyer map->_dm_maptblcnt = 0; 335 1.4.2.2 bouyer } 336 1.4.2.2 bouyer } 337 1.4.2.2 bouyer 338 1.4.2.2 bouyer static void 339 1.4.2.2 bouyer apbus_dma_mapset(t, map) 340 1.4.2.2 bouyer bus_dma_tag_t t; 341 1.4.2.2 bouyer bus_dmamap_t map; 342 1.4.2.2 bouyer { 343 1.4.2.2 bouyer int i; 344 1.4.2.2 bouyer bus_addr_t addr, eaddr; 345 1.4.2.2 bouyer int seg; 346 1.4.2.2 bouyer bus_dma_segment_t *segs; 347 1.4.2.2 bouyer 348 1.4.2.2 bouyer i = 0; 349 1.4.2.2 bouyer for (seg = 0; seg < map->dm_nsegs; seg++) { 350 1.4.2.2 bouyer segs = &map->dm_segs[seg]; 351 1.4.2.2 bouyer for (addr = segs->ds_addr, eaddr = addr + segs->ds_len; 352 1.4.2.2 bouyer addr < eaddr; addr += NBPG, i++) { 353 1.4.2.2 bouyer #ifdef DIAGNOSTIC 354 1.4.2.2 bouyer if (i >= map->_dm_maptblcnt) 355 1.4.2.2 bouyer panic("dma map table overflow"); 356 1.4.2.2 bouyer #endif 357 1.4.2.2 bouyer APBUS_MAPTBL(map->_dm_maptbl + i, 358 1.4.2.2 bouyer NEWS5000_APBUS_MAP_VALID | 359 1.4.2.2 bouyer NEWS5000_APBUS_MAP_COHERENT | 360 1.4.2.2 bouyer (addr >> PGSHIFT)); 361 1.4.2.2 bouyer } 362 1.4.2.2 bouyer } 363 1.4.2.2 bouyer map->dm_segs[0].ds_addr = map->_dm_maptbl << PGSHIFT; 364 1.4.2.2 bouyer map->dm_segs[0].ds_len = map->dm_mapsize; 365 1.4.2.2 bouyer map->dm_nsegs = 1; 366 1.4.2.2 bouyer } 367 1.4.2.2 bouyer 368 1.4.2.3 bouyer static int 369 1.4.2.2 bouyer apbus_dmamap_create(t, size, nsegments, maxsegsz, boundary, flags, dmamp) 370 1.4.2.2 bouyer bus_dma_tag_t t; 371 1.4.2.2 bouyer bus_size_t size; 372 1.4.2.2 bouyer int nsegments; 373 1.4.2.2 bouyer bus_size_t maxsegsz; 374 1.4.2.2 bouyer bus_size_t boundary; 375 1.4.2.2 bouyer int flags; 376 1.4.2.2 bouyer bus_dmamap_t *dmamp; 377 1.4.2.2 bouyer { 378 1.4.2.2 bouyer int error; 379 1.4.2.2 bouyer 380 1.4.2.2 bouyer if (flags & NEWSMIPS_DMAMAP_MAPTBL) 381 1.4.2.2 bouyer nsegments = round_page(size) / NBPG; 382 1.4.2.2 bouyer error = _bus_dmamap_create(t, size, nsegments, maxsegsz, boundary, 383 1.4.2.2 bouyer flags, dmamp); 384 1.4.2.2 bouyer if (error == 0 && (flags & NEWSMIPS_DMAMAP_MAPTBL)) { 385 1.4.2.2 bouyer error = apbus_dma_mapalloc(t, *dmamp, flags); 386 1.4.2.2 bouyer if (error) { 387 1.4.2.2 bouyer _bus_dmamap_destroy(t, *dmamp); 388 1.4.2.2 bouyer *dmamp = NULL; 389 1.4.2.2 bouyer } 390 1.4.2.2 bouyer } 391 1.4.2.2 bouyer return error; 392 1.4.2.2 bouyer } 393 1.4.2.2 bouyer 394 1.4.2.3 bouyer static void 395 1.4.2.2 bouyer apbus_dmamap_destroy(t, map) 396 1.4.2.2 bouyer bus_dma_tag_t t; 397 1.4.2.2 bouyer bus_dmamap_t map; 398 1.4.2.2 bouyer { 399 1.4.2.2 bouyer if (map->_dm_flags & NEWSMIPS_DMAMAP_MAPTBL) 400 1.4.2.2 bouyer apbus_dma_mapfree(t, map); 401 1.4.2.2 bouyer _bus_dmamap_destroy(t, map); 402 1.4.2.2 bouyer } 403 1.4.2.2 bouyer 404 1.4.2.3 bouyer static int 405 1.4.2.2 bouyer apbus_dmamap_load(t, map, buf, buflen, p, flags) 406 1.4.2.2 bouyer bus_dma_tag_t t; 407 1.4.2.2 bouyer bus_dmamap_t map; 408 1.4.2.2 bouyer void *buf; 409 1.4.2.2 bouyer bus_size_t buflen; 410 1.4.2.2 bouyer struct proc *p; 411 1.4.2.2 bouyer int flags; 412 1.4.2.2 bouyer { 413 1.4.2.2 bouyer int error; 414 1.4.2.2 bouyer 415 1.4.2.2 bouyer error = _bus_dmamap_load(t, map, buf, buflen, p, flags); 416 1.4.2.2 bouyer if (error == 0) { 417 1.4.2.2 bouyer if (map->_dm_flags & NEWSMIPS_DMAMAP_MAPTBL) 418 1.4.2.2 bouyer apbus_dma_mapset(t, map); 419 1.4.2.2 bouyer else 420 1.4.2.2 bouyer apbus_dma_unmapped(t, map); 421 1.4.2.2 bouyer } 422 1.4.2.2 bouyer return error; 423 1.4.2.2 bouyer } 424 1.4.2.2 bouyer 425 1.4.2.3 bouyer static int 426 1.4.2.2 bouyer apbus_dmamap_load_mbuf(t, map, m0, flags) 427 1.4.2.2 bouyer bus_dma_tag_t t; 428 1.4.2.2 bouyer bus_dmamap_t map; 429 1.4.2.2 bouyer struct mbuf *m0; 430 1.4.2.2 bouyer int flags; 431 1.4.2.2 bouyer { 432 1.4.2.2 bouyer int error; 433 1.4.2.2 bouyer 434 1.4.2.2 bouyer error = _bus_dmamap_load_mbuf(t, map, m0, flags); 435 1.4.2.2 bouyer if (error == 0) { 436 1.4.2.2 bouyer if (map->_dm_flags & NEWSMIPS_DMAMAP_MAPTBL) 437 1.4.2.2 bouyer apbus_dma_mapset(t, map); 438 1.4.2.2 bouyer else 439 1.4.2.2 bouyer apbus_dma_unmapped(t, map); 440 1.4.2.2 bouyer } 441 1.4.2.2 bouyer return error; 442 1.4.2.2 bouyer } 443 1.4.2.2 bouyer 444 1.4.2.3 bouyer static int 445 1.4.2.2 bouyer apbus_dmamap_load_uio(t, map, uio, flags) 446 1.4.2.2 bouyer bus_dma_tag_t t; 447 1.4.2.2 bouyer bus_dmamap_t map; 448 1.4.2.2 bouyer struct uio *uio; 449 1.4.2.2 bouyer int flags; 450 1.4.2.2 bouyer { 451 1.4.2.2 bouyer int error; 452 1.4.2.2 bouyer 453 1.4.2.2 bouyer error = _bus_dmamap_load_uio(t, map, uio, flags); 454 1.4.2.2 bouyer if (error == 0) { 455 1.4.2.2 bouyer if (map->_dm_flags & NEWSMIPS_DMAMAP_MAPTBL) 456 1.4.2.2 bouyer apbus_dma_mapset(t, map); 457 1.4.2.2 bouyer else 458 1.4.2.2 bouyer apbus_dma_unmapped(t, map); 459 1.4.2.2 bouyer } 460 1.4.2.2 bouyer return error; 461 1.4.2.2 bouyer } 462 1.4.2.2 bouyer 463 1.4.2.3 bouyer static int 464 1.4.2.2 bouyer apbus_dmamap_load_raw(t, map, segs, nsegs, size, flags) 465 1.4.2.2 bouyer bus_dma_tag_t t; 466 1.4.2.2 bouyer bus_dmamap_t map; 467 1.4.2.2 bouyer bus_dma_segment_t *segs; 468 1.4.2.2 bouyer int nsegs; 469 1.4.2.2 bouyer bus_size_t size; 470 1.4.2.2 bouyer int flags; 471 1.4.2.2 bouyer { 472 1.4.2.2 bouyer int error; 473 1.4.2.2 bouyer 474 1.4.2.2 bouyer error = _bus_dmamap_load_raw(t, map, segs, nsegs, size, flags); 475 1.4.2.2 bouyer if (error == 0) { 476 1.4.2.2 bouyer if (map->_dm_flags & NEWSMIPS_DMAMAP_MAPTBL) 477 1.4.2.2 bouyer apbus_dma_mapset(t, map); 478 1.4.2.2 bouyer else 479 1.4.2.2 bouyer apbus_dma_unmapped(t, map); 480 1.4.2.2 bouyer } 481 1.4.2.2 bouyer return error; 482 1.4.2.2 bouyer } 483 1.4.2.2 bouyer 484 1.4.2.3 bouyer static void 485 1.4.2.2 bouyer apbus_dmamap_sync(t, map, offset, len, ops) 486 1.4.2.2 bouyer bus_dma_tag_t t; 487 1.4.2.2 bouyer bus_dmamap_t map; 488 1.4.2.2 bouyer bus_addr_t offset; 489 1.4.2.2 bouyer bus_size_t len; 490 1.4.2.2 bouyer int ops; 491 1.4.2.2 bouyer { 492 1.4.2.2 bouyer 493 1.4.2.2 bouyer /* 494 1.4.2.2 bouyer * Flush DMA cache by issueing IO read for the AProm of specified slot. 495 1.4.2.2 bouyer */ 496 1.4.2.2 bouyer bus_space_read_4(t->_slotbaset, t->_slotbaseh, 0); 497 1.4.2.2 bouyer 498 1.4.2.2 bouyer _bus_dmamap_sync(t, map, offset, len, ops); 499 1.4.2.2 bouyer } 500 1.4.2.2 bouyer 501 1.4.2.2 bouyer struct newsmips_bus_dma_tag apbus_dma_tag = { 502 1.4.2.2 bouyer apbus_dmamap_create, 503 1.4.2.2 bouyer apbus_dmamap_destroy, 504 1.4.2.2 bouyer apbus_dmamap_load, 505 1.4.2.2 bouyer apbus_dmamap_load_mbuf, 506 1.4.2.2 bouyer apbus_dmamap_load_uio, 507 1.4.2.2 bouyer apbus_dmamap_load_raw, 508 1.4.2.2 bouyer _bus_dmamap_unload, 509 1.4.2.2 bouyer apbus_dmamap_sync, 510 1.4.2.2 bouyer _bus_dmamem_alloc, 511 1.4.2.2 bouyer _bus_dmamem_free, 512 1.4.2.2 bouyer _bus_dmamem_map, 513 1.4.2.2 bouyer _bus_dmamem_unmap, 514 1.4.2.2 bouyer _bus_dmamem_mmap, 515 1.4.2.2 bouyer }; 516 1.4.2.2 bouyer 517 1.4.2.2 bouyer struct newsmips_bus_dma_tag * 518 1.4.2.2 bouyer apbus_dmatag_init(apa) 519 1.4.2.2 bouyer struct apbus_attach_args *apa; 520 1.4.2.2 bouyer { 521 1.4.2.2 bouyer struct newsmips_bus_dma_tag *dmat; 522 1.4.2.2 bouyer 523 1.4.2.2 bouyer dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); 524 1.4.2.2 bouyer if (dmat != NULL) { 525 1.4.2.2 bouyer memcpy(dmat, &apbus_dma_tag, sizeof(*dmat)); 526 1.4.2.2 bouyer dmat->_slotno = apa->apa_slotno; 527 1.4.2.2 bouyer dmat->_slotbaset = 0; 528 1.4.2.2 bouyer dmat->_slotbaseh = apa->apa_hwbase; 529 1.4.2.2 bouyer } 530 1.4.2.2 bouyer return dmat; 531 1.4.2.2 bouyer } 532
Indexes created Sat Oct 25 16:10:12 GMT 2025