lca_dma.c revision 1.2.2.2
1 1.2.2.2 cgd /* $NetBSD: lca_dma.c,v 1.2.2.2 1997/06/07 04:43:28 cgd Exp $ */ 2 1.2.2.2 cgd 3 1.2.2.2 cgd /*- 4 1.2.2.2 cgd * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 1.2.2.2 cgd * All rights reserved. 6 1.2.2.2 cgd * 7 1.2.2.2 cgd * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 cgd * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 1.2.2.2 cgd * NASA Ames Research Center. 10 1.2.2.2 cgd * 11 1.2.2.2 cgd * Redistribution and use in source and binary forms, with or without 12 1.2.2.2 cgd * modification, are permitted provided that the following conditions 13 1.2.2.2 cgd * are met: 14 1.2.2.2 cgd * 1. Redistributions of source code must retain the above copyright 15 1.2.2.2 cgd * notice, this list of conditions and the following disclaimer. 16 1.2.2.2 cgd * 2. Redistributions in binary form must reproduce the above copyright 17 1.2.2.2 cgd * notice, this list of conditions and the following disclaimer in the 18 1.2.2.2 cgd * documentation and/or other materials provided with the distribution. 19 1.2.2.2 cgd * 3. All advertising materials mentioning features or use of this software 20 1.2.2.2 cgd * must display the following acknowledgement: 21 1.2.2.2 cgd * This product includes software developed by the NetBSD 22 1.2.2.2 cgd * Foundation, Inc. and its contributors. 23 1.2.2.2 cgd * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.2.2.2 cgd * contributors may be used to endorse or promote products derived 25 1.2.2.2 cgd * from this software without specific prior written permission. 26 1.2.2.2 cgd * 27 1.2.2.2 cgd * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.2.2.2 cgd * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.2.2.2 cgd * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.2.2.2 cgd * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.2.2.2 cgd * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.2.2.2 cgd * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.2.2.2 cgd * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.2.2.2 cgd * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.2.2.2 cgd * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.2.2.2 cgd * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.2.2.2 cgd * POSSIBILITY OF SUCH DAMAGE. 38 1.2.2.2 cgd */ 39 1.2.2.2 cgd 40 1.2.2.2 cgd #include <machine/options.h> /* Config options headers */ 41 1.2.2.2 cgd #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 42 1.2.2.2 cgd 43 1.2.2.2 cgd __KERNEL_RCSID(0, "$NetBSD: lca_dma.c,v 1.2.2.2 1997/06/07 04:43:28 cgd Exp $"); 44 1.2.2.2 cgd 45 1.2.2.2 cgd #include <sys/param.h> 46 1.2.2.2 cgd #include <sys/systm.h> 47 1.2.2.2 cgd #include <sys/kernel.h> 48 1.2.2.2 cgd #include <sys/device.h> 49 1.2.2.2 cgd #include <sys/malloc.h> 50 1.2.2.2 cgd #include <vm/vm.h> 51 1.2.2.2 cgd 52 1.2.2.2 cgd #define _ALPHA_BUS_DMA_PRIVATE 53 1.2.2.2 cgd #include <machine/bus.h> 54 1.2.2.2 cgd 55 1.2.2.2 cgd #include <dev/pci/pcireg.h> 56 1.2.2.2 cgd #include <dev/pci/pcivar.h> 57 1.2.2.2 cgd #include <alpha/pci/lcareg.h> 58 1.2.2.2 cgd #include <alpha/pci/lcavar.h> 59 1.2.2.2 cgd 60 1.2.2.2 cgd bus_dma_tag_t lca_dma_get_tag __P((bus_dma_tag_t, alpha_bus_t)); 61 1.2.2.2 cgd 62 1.2.2.2 cgd int lca_bus_dmamap_create_sgmap __P((bus_dma_tag_t, bus_size_t, int, 63 1.2.2.2 cgd bus_size_t, bus_size_t, int, bus_dmamap_t *)); 64 1.2.2.2 cgd 65 1.2.2.2 cgd void lca_bus_dmamap_destroy_sgmap __P((bus_dma_tag_t, bus_dmamap_t)); 66 1.2.2.2 cgd 67 1.2.2.2 cgd int lca_bus_dmamap_load_direct __P((bus_dma_tag_t, bus_dmamap_t, void *, 68 1.2.2.2 cgd bus_size_t, struct proc *, int)); 69 1.2.2.2 cgd int lca_bus_dmamap_load_sgmap __P((bus_dma_tag_t, bus_dmamap_t, void *, 70 1.2.2.2 cgd bus_size_t, struct proc *, int)); 71 1.2.2.2 cgd 72 1.2.2.2 cgd int lca_bus_dmamap_load_mbuf_direct __P((bus_dma_tag_t, bus_dmamap_t, 73 1.2.2.2 cgd struct mbuf *, int)); 74 1.2.2.2 cgd int lca_bus_dmamap_load_mbuf_sgmap __P((bus_dma_tag_t, bus_dmamap_t, 75 1.2.2.2 cgd struct mbuf *, int)); 76 1.2.2.2 cgd 77 1.2.2.2 cgd int lca_bus_dmamap_load_uio_direct __P((bus_dma_tag_t, bus_dmamap_t, 78 1.2.2.2 cgd struct uio *, int)); 79 1.2.2.2 cgd int lca_bus_dmamap_load_uio_sgmap __P((bus_dma_tag_t, bus_dmamap_t, 80 1.2.2.2 cgd struct uio *, int)); 81 1.2.2.2 cgd 82 1.2.2.2 cgd int lca_bus_dmamap_load_raw_direct __P((bus_dma_tag_t, bus_dmamap_t, 83 1.2.2.2 cgd bus_dma_segment_t *, int, bus_size_t, int)); 84 1.2.2.2 cgd int lca_bus_dmamap_load_raw_sgmap __P((bus_dma_tag_t, bus_dmamap_t, 85 1.2.2.2 cgd bus_dma_segment_t *, int, bus_size_t, int)); 86 1.2.2.2 cgd 87 1.2.2.2 cgd void lca_bus_dmamap_unload_sgmap __P((bus_dma_tag_t, bus_dmamap_t)); 88 1.2.2.2 cgd 89 1.2.2.2 cgd /* 90 1.2.2.2 cgd * The 1G direct-mapped DMA window begins at this PCI address. 91 1.2.2.2 cgd */ 92 1.2.2.2 cgd #define LCA_DIRECT_MAPPED_BASE 0x40000000 93 1.2.2.2 cgd 94 1.2.2.2 cgd /* 95 1.2.2.2 cgd * The 8M SGMAP-mapped DMA window begins at this PCI address. 96 1.2.2.2 cgd */ 97 1.2.2.2 cgd #define LCA_SGMAP_MAPPED_BASE (8*1024*1024) 98 1.2.2.2 cgd 99 1.2.2.2 cgd /* 100 1.2.2.2 cgd * Macro to flush LCA scatter/gather TLB. 101 1.2.2.2 cgd */ 102 1.2.2.2 cgd #define LCA_TLB_INVALIDATE() \ 103 1.2.2.2 cgd do { \ 104 1.2.2.2 cgd alpha_mb(); \ 105 1.2.2.2 cgd REGVAL64(LCA_IOC_TBIA) = 0; \ 106 1.2.2.2 cgd alpha_mb(); \ 107 1.2.2.2 cgd } while (0) 108 1.2.2.2 cgd 109 1.2.2.2 cgd void 110 1.2.2.2 cgd lca_dma_init(lcp) 111 1.2.2.2 cgd struct lca_config *lcp; 112 1.2.2.2 cgd { 113 1.2.2.2 cgd bus_dma_tag_t t; 114 1.2.2.2 cgd 115 1.2.2.2 cgd /* 116 1.2.2.2 cgd * Initialize the DMA tag used for direct-mapped DMA. 117 1.2.2.2 cgd */ 118 1.2.2.2 cgd t = &lcp->lc_dmat_direct; 119 1.2.2.2 cgd t->_cookie = lcp; 120 1.2.2.2 cgd t->_get_tag = lca_dma_get_tag; 121 1.2.2.2 cgd t->_dmamap_create = _bus_dmamap_create; 122 1.2.2.2 cgd t->_dmamap_destroy = _bus_dmamap_destroy; 123 1.2.2.2 cgd t->_dmamap_load = lca_bus_dmamap_load_direct; 124 1.2.2.2 cgd t->_dmamap_load_mbuf = lca_bus_dmamap_load_mbuf_direct; 125 1.2.2.2 cgd t->_dmamap_load_uio = lca_bus_dmamap_load_uio_direct; 126 1.2.2.2 cgd t->_dmamap_load_raw = lca_bus_dmamap_load_raw_direct; 127 1.2.2.2 cgd t->_dmamap_unload = _bus_dmamap_unload; 128 1.2.2.2 cgd t->_dmamap_sync = NULL; /* Nothing to do. */ 129 1.2.2.2 cgd 130 1.2.2.2 cgd t->_dmamem_alloc = _bus_dmamem_alloc; 131 1.2.2.2 cgd t->_dmamem_free = _bus_dmamem_free; 132 1.2.2.2 cgd t->_dmamem_map = _bus_dmamem_map; 133 1.2.2.2 cgd t->_dmamem_unmap = _bus_dmamem_unmap; 134 1.2.2.2 cgd t->_dmamem_mmap = _bus_dmamem_mmap; 135 1.2.2.2 cgd 136 1.2.2.2 cgd /* 137 1.2.2.2 cgd * Initialize the DMA tag used for sgmap-mapped DMA. 138 1.2.2.2 cgd */ 139 1.2.2.2 cgd t = &lcp->lc_dmat_sgmap; 140 1.2.2.2 cgd t->_cookie = lcp; 141 1.2.2.2 cgd t->_get_tag = lca_dma_get_tag; 142 1.2.2.2 cgd t->_dmamap_create = lca_bus_dmamap_create_sgmap; 143 1.2.2.2 cgd t->_dmamap_destroy = lca_bus_dmamap_destroy_sgmap; 144 1.2.2.2 cgd t->_dmamap_load = lca_bus_dmamap_load_sgmap; 145 1.2.2.2 cgd t->_dmamap_load_mbuf = lca_bus_dmamap_load_mbuf_sgmap; 146 1.2.2.2 cgd t->_dmamap_load_uio = lca_bus_dmamap_load_uio_sgmap; 147 1.2.2.2 cgd t->_dmamap_load_raw = lca_bus_dmamap_load_raw_sgmap; 148 1.2.2.2 cgd t->_dmamap_unload = lca_bus_dmamap_unload_sgmap; 149 1.2.2.2 cgd t->_dmamap_sync = NULL; /* Nothing to do. */ 150 1.2.2.2 cgd 151 1.2.2.2 cgd t->_dmamem_alloc = _bus_dmamem_alloc; 152 1.2.2.2 cgd t->_dmamem_free = _bus_dmamem_free; 153 1.2.2.2 cgd t->_dmamem_map = _bus_dmamem_map; 154 1.2.2.2 cgd t->_dmamem_unmap = _bus_dmamem_unmap; 155 1.2.2.2 cgd t->_dmamem_mmap = _bus_dmamem_mmap; 156 1.2.2.2 cgd 157 1.2.2.2 cgd /* 158 1.2.2.2 cgd * The firmware has set up window 1 as a 1G direct-mapped DMA 159 1.2.2.2 cgd * window beginning at 1G. We leave it alone. Disable 160 1.2.2.2 cgd * window 0. 161 1.2.2.2 cgd */ 162 1.2.2.2 cgd REGVAL64(LCA_IOC_W_BASE0) = 0; 163 1.2.2.2 cgd alpha_mb(); 164 1.2.2.2 cgd 165 1.2.2.2 cgd /* 166 1.2.2.2 cgd * Initialize the SGMAP if safe to do so. 167 1.2.2.2 cgd */ 168 1.2.2.2 cgd if (lcp->lc_mallocsafe) { 169 1.2.2.2 cgd alpha_sgmap_init(t, &lcp->lc_sgmap, "lca_sgmap", 170 1.2.2.2 cgd LCA_SGMAP_MAPPED_BASE, 0, (8*1024*1024), 171 1.2.2.2 cgd sizeof(u_int64_t), NULL); 172 1.2.2.2 cgd 173 1.2.2.2 cgd /* 174 1.2.2.2 cgd * Set up window 0 as an 8MB SGMAP-mapped window 175 1.2.2.2 cgd * starting at 8MB. 176 1.2.2.2 cgd */ 177 1.2.2.2 cgd if ((lcp->lc_sgmap.aps_ptpa & IOC_W_T_BASE) != 178 1.2.2.2 cgd lcp->lc_sgmap.aps_ptpa) 179 1.2.2.2 cgd panic("lca_dma_init: bad page table address"); 180 1.2.2.2 cgd REGVAL64(LCA_IOC_W_T_BASE0) = lcp->lc_sgmap.aps_ptpa; 181 1.2.2.2 cgd REGVAL64(LCA_IOC_W_MASK0) = IOC_W_MASK_8M; 182 1.2.2.2 cgd alpha_mb(); 183 1.2.2.2 cgd 184 1.2.2.2 cgd /* Enble the scatter/gather TLB. */ 185 1.2.2.2 cgd REGVAL64(LCA_IOC_TB_ENA) = IOC_TB_ENA_TEN; 186 1.2.2.2 cgd alpha_mb(); 187 1.2.2.2 cgd 188 1.2.2.2 cgd REGVAL64(LCA_IOC_W_BASE0) = LCA_SGMAP_MAPPED_BASE | 189 1.2.2.2 cgd IOC_W_BASE_SG | IOC_W_BASE_WEN; 190 1.2.2.2 cgd alpha_mb(); 191 1.2.2.2 cgd 192 1.2.2.2 cgd LCA_TLB_INVALIDATE(); 193 1.2.2.2 cgd } 194 1.2.2.2 cgd 195 1.2.2.2 cgd /* XXX XXX BEGIN XXX XXX */ 196 1.2.2.2 cgd { /* XXX */ 197 1.2.2.2 cgd extern vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 198 1.2.2.2 cgd alpha_XXX_dmamap_or = LCA_DIRECT_MAPPED_BASE; /* XXX */ 199 1.2.2.2 cgd } /* XXX */ 200 1.2.2.2 cgd /* XXX XXX END XXX XXX */ 201 1.2.2.2 cgd } 202 1.2.2.2 cgd 203 1.2.2.2 cgd /* 204 1.2.2.2 cgd * Return the bus dma tag to be used for the specified bus type. 205 1.2.2.2 cgd * INTERNAL USE ONLY! 206 1.2.2.2 cgd */ 207 1.2.2.2 cgd bus_dma_tag_t 208 1.2.2.2 cgd lca_dma_get_tag(t, bustype) 209 1.2.2.2 cgd bus_dma_tag_t t; 210 1.2.2.2 cgd alpha_bus_t bustype; 211 1.2.2.2 cgd { 212 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 213 1.2.2.2 cgd 214 1.2.2.2 cgd switch (bustype) { 215 1.2.2.2 cgd case ALPHA_BUS_PCI: 216 1.2.2.2 cgd case ALPHA_BUS_EISA: 217 1.2.2.2 cgd /* 218 1.2.2.2 cgd * Systems with an LCA can only support 1G 219 1.2.2.2 cgd * of memory, so we use the direct-mapped window 220 1.2.2.2 cgd * on busses that have 32-bit DMA. 221 1.2.2.2 cgd */ 222 1.2.2.2 cgd return (&lcp->lc_dmat_direct); 223 1.2.2.2 cgd 224 1.2.2.2 cgd case ALPHA_BUS_ISA: 225 1.2.2.2 cgd /* 226 1.2.2.2 cgd * ISA doesn't have enough address bits to use 227 1.2.2.2 cgd * the direct-mapped DMA window, so we must use 228 1.2.2.2 cgd * SGMAPs. 229 1.2.2.2 cgd */ 230 1.2.2.2 cgd return (&lcp->lc_dmat_sgmap); 231 1.2.2.2 cgd 232 1.2.2.2 cgd default: 233 1.2.2.2 cgd panic("lca_dma_get_tag: shouldn't be here, really..."); 234 1.2.2.2 cgd } 235 1.2.2.2 cgd } 236 1.2.2.2 cgd 237 1.2.2.2 cgd /* 238 1.2.2.2 cgd * Create an LCA SGMAP-mapped DMA map. 239 1.2.2.2 cgd */ 240 1.2.2.2 cgd int 241 1.2.2.2 cgd lca_bus_dmamap_create_sgmap(t, size, nsegments, maxsegsz, boundary, 242 1.2.2.2 cgd flags, dmamp) 243 1.2.2.2 cgd bus_dma_tag_t t; 244 1.2.2.2 cgd bus_size_t size; 245 1.2.2.2 cgd int nsegments; 246 1.2.2.2 cgd bus_size_t maxsegsz; 247 1.2.2.2 cgd bus_size_t boundary; 248 1.2.2.2 cgd int flags; 249 1.2.2.2 cgd bus_dmamap_t *dmamp; 250 1.2.2.2 cgd { 251 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 252 1.2.2.2 cgd struct alpha_sgmap_cookie *a; 253 1.2.2.2 cgd bus_dmamap_t map; 254 1.2.2.2 cgd int error; 255 1.2.2.2 cgd 256 1.2.2.2 cgd error = _bus_dmamap_create(t, size, nsegments, maxsegsz, 257 1.2.2.2 cgd boundary, flags, dmamp); 258 1.2.2.2 cgd if (error) 259 1.2.2.2 cgd return (error); 260 1.2.2.2 cgd 261 1.2.2.2 cgd map = *dmamp; 262 1.2.2.2 cgd 263 1.2.2.2 cgd a = malloc(sizeof(struct alpha_sgmap_cookie), M_DEVBUF, 264 1.2.2.2 cgd (flags & BUS_DMA_NOWAIT) ? M_NOWAIT : M_WAITOK); 265 1.2.2.2 cgd if (a == NULL) { 266 1.2.2.2 cgd _bus_dmamap_destroy(t, map); 267 1.2.2.2 cgd return (ENOMEM); 268 1.2.2.2 cgd } 269 1.2.2.2 cgd bzero(a, sizeof(struct alpha_sgmap_cookie)); 270 1.2.2.2 cgd map->_dm_sgcookie = a; 271 1.2.2.2 cgd 272 1.2.2.2 cgd if (flags & BUS_DMA_ALLOCNOW) { 273 1.2.2.2 cgd error = alpha_sgmap_alloc(map, round_page(size), 274 1.2.2.2 cgd &lcp->lc_sgmap, flags); 275 1.2.2.2 cgd if (error) 276 1.2.2.2 cgd lca_bus_dmamap_destroy_sgmap(t, map); 277 1.2.2.2 cgd } 278 1.2.2.2 cgd 279 1.2.2.2 cgd return (error); 280 1.2.2.2 cgd } 281 1.2.2.2 cgd 282 1.2.2.2 cgd /* 283 1.2.2.2 cgd * Destroy an LCA SGMAP-mapped DMA map. 284 1.2.2.2 cgd */ 285 1.2.2.2 cgd void 286 1.2.2.2 cgd lca_bus_dmamap_destroy_sgmap(t, map) 287 1.2.2.2 cgd bus_dma_tag_t t; 288 1.2.2.2 cgd bus_dmamap_t map; 289 1.2.2.2 cgd { 290 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 291 1.2.2.2 cgd struct alpha_sgmap_cookie *a = map->_dm_sgcookie; 292 1.2.2.2 cgd 293 1.2.2.2 cgd if (a->apdc_flags & APDC_HAS_SGMAP) 294 1.2.2.2 cgd alpha_sgmap_free(&lcp->lc_sgmap, a); 295 1.2.2.2 cgd 296 1.2.2.2 cgd free(a, M_DEVBUF); 297 1.2.2.2 cgd _bus_dmamap_destroy(t, map); 298 1.2.2.2 cgd } 299 1.2.2.2 cgd 300 1.2.2.2 cgd /* 301 1.2.2.2 cgd * Load an LCA direct-mapped DMA map with a linear buffer. 302 1.2.2.2 cgd */ 303 1.2.2.2 cgd int 304 1.2.2.2 cgd lca_bus_dmamap_load_direct(t, map, buf, buflen, p, flags) 305 1.2.2.2 cgd bus_dma_tag_t t; 306 1.2.2.2 cgd bus_dmamap_t map; 307 1.2.2.2 cgd void *buf; 308 1.2.2.2 cgd bus_size_t buflen; 309 1.2.2.2 cgd struct proc *p; 310 1.2.2.2 cgd int flags; 311 1.2.2.2 cgd { 312 1.2.2.2 cgd 313 1.2.2.2 cgd return (_bus_dmamap_load_direct_common(t, map, buf, buflen, p, 314 1.2.2.2 cgd flags, LCA_DIRECT_MAPPED_BASE)); 315 1.2.2.2 cgd } 316 1.2.2.2 cgd 317 1.2.2.2 cgd /* 318 1.2.2.2 cgd * Load an LCA SGMAP-mapped DMA map with a linear buffer. 319 1.2.2.2 cgd */ 320 1.2.2.2 cgd int 321 1.2.2.2 cgd lca_bus_dmamap_load_sgmap(t, map, buf, buflen, p, flags) 322 1.2.2.2 cgd bus_dma_tag_t t; 323 1.2.2.2 cgd bus_dmamap_t map; 324 1.2.2.2 cgd void *buf; 325 1.2.2.2 cgd bus_size_t buflen; 326 1.2.2.2 cgd struct proc *p; 327 1.2.2.2 cgd int flags; 328 1.2.2.2 cgd { 329 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 330 1.2.2.2 cgd int error; 331 1.2.2.2 cgd 332 1.2.2.2 cgd error = pci_sgmap_pte64_load(t, map, buf, buflen, p, flags, 333 1.2.2.2 cgd &lcp->lc_sgmap); 334 1.2.2.2 cgd if (error == 0) 335 1.2.2.2 cgd LCA_TLB_INVALIDATE(); 336 1.2.2.2 cgd 337 1.2.2.2 cgd return (error); 338 1.2.2.2 cgd } 339 1.2.2.2 cgd 340 1.2.2.2 cgd /* 341 1.2.2.2 cgd * Load an LCA direct-mapped DMA map with an mbuf chain. 342 1.2.2.2 cgd */ 343 1.2.2.2 cgd int 344 1.2.2.2 cgd lca_bus_dmamap_load_mbuf_direct(t, map, m, flags) 345 1.2.2.2 cgd bus_dma_tag_t t; 346 1.2.2.2 cgd bus_dmamap_t map; 347 1.2.2.2 cgd struct mbuf *m; 348 1.2.2.2 cgd int flags; 349 1.2.2.2 cgd { 350 1.2.2.2 cgd 351 1.2.2.2 cgd return (_bus_dmamap_load_mbuf_direct_common(t, map, m, 352 1.2.2.2 cgd flags, LCA_DIRECT_MAPPED_BASE)); 353 1.2.2.2 cgd } 354 1.2.2.2 cgd 355 1.2.2.2 cgd /* 356 1.2.2.2 cgd * Load an LCA SGMAP-mapped DMA map with an mbuf chain. 357 1.2.2.2 cgd */ 358 1.2.2.2 cgd int 359 1.2.2.2 cgd lca_bus_dmamap_load_mbuf_sgmap(t, map, m, flags) 360 1.2.2.2 cgd bus_dma_tag_t t; 361 1.2.2.2 cgd bus_dmamap_t map; 362 1.2.2.2 cgd struct mbuf *m; 363 1.2.2.2 cgd int flags; 364 1.2.2.2 cgd { 365 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 366 1.2.2.2 cgd int error; 367 1.2.2.2 cgd 368 1.2.2.2 cgd error = pci_sgmap_pte64_load_mbuf(t, map, m, flags, &lcp->lc_sgmap); 369 1.2.2.2 cgd if (error == 0) 370 1.2.2.2 cgd LCA_TLB_INVALIDATE(); 371 1.2.2.2 cgd 372 1.2.2.2 cgd return (error); 373 1.2.2.2 cgd } 374 1.2.2.2 cgd 375 1.2.2.2 cgd /* 376 1.2.2.2 cgd * Load an LCA direct-mapped DMA map with a uio. 377 1.2.2.2 cgd */ 378 1.2.2.2 cgd int 379 1.2.2.2 cgd lca_bus_dmamap_load_uio_direct(t, map, uio, flags) 380 1.2.2.2 cgd bus_dma_tag_t t; 381 1.2.2.2 cgd bus_dmamap_t map; 382 1.2.2.2 cgd struct uio *uio; 383 1.2.2.2 cgd int flags; 384 1.2.2.2 cgd { 385 1.2.2.2 cgd 386 1.2.2.2 cgd return (_bus_dmamap_load_uio_direct_common(t, map, uio, 387 1.2.2.2 cgd flags, LCA_DIRECT_MAPPED_BASE)); 388 1.2.2.2 cgd } 389 1.2.2.2 cgd 390 1.2.2.2 cgd /* 391 1.2.2.2 cgd * Load an LCA SGMAP-mapped DMA map with a uio. 392 1.2.2.2 cgd */ 393 1.2.2.2 cgd int 394 1.2.2.2 cgd lca_bus_dmamap_load_uio_sgmap(t, map, uio, flags) 395 1.2.2.2 cgd bus_dma_tag_t t; 396 1.2.2.2 cgd bus_dmamap_t map; 397 1.2.2.2 cgd struct uio *uio; 398 1.2.2.2 cgd int flags; 399 1.2.2.2 cgd { 400 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 401 1.2.2.2 cgd int error; 402 1.2.2.2 cgd 403 1.2.2.2 cgd error = pci_sgmap_pte64_load_uio(t, map, uio, flags, &lcp->lc_sgmap); 404 1.2.2.2 cgd if (error == 0) 405 1.2.2.2 cgd LCA_TLB_INVALIDATE(); 406 1.2.2.2 cgd 407 1.2.2.2 cgd return (error); 408 1.2.2.2 cgd } 409 1.2.2.2 cgd 410 1.2.2.2 cgd /* 411 1.2.2.2 cgd * Load an LCA direct-mapped DMA map with raw memory. 412 1.2.2.2 cgd */ 413 1.2.2.2 cgd int 414 1.2.2.2 cgd lca_bus_dmamap_load_raw_direct(t, map, segs, nsegs, size, flags) 415 1.2.2.2 cgd bus_dma_tag_t t; 416 1.2.2.2 cgd bus_dmamap_t map; 417 1.2.2.2 cgd bus_dma_segment_t *segs; 418 1.2.2.2 cgd int nsegs; 419 1.2.2.2 cgd bus_size_t size; 420 1.2.2.2 cgd int flags; 421 1.2.2.2 cgd { 422 1.2.2.2 cgd 423 1.2.2.2 cgd return (_bus_dmamap_load_raw_direct_common(t, map, segs, nsegs, 424 1.2.2.2 cgd size, flags, LCA_DIRECT_MAPPED_BASE)); 425 1.2.2.2 cgd } 426 1.2.2.2 cgd 427 1.2.2.2 cgd /* 428 1.2.2.2 cgd * Load an LCA SGMAP-mapped DMA map with raw memory. 429 1.2.2.2 cgd */ 430 1.2.2.2 cgd int 431 1.2.2.2 cgd lca_bus_dmamap_load_raw_sgmap(t, map, segs, nsegs, size, flags) 432 1.2.2.2 cgd bus_dma_tag_t t; 433 1.2.2.2 cgd bus_dmamap_t map; 434 1.2.2.2 cgd bus_dma_segment_t *segs; 435 1.2.2.2 cgd int nsegs; 436 1.2.2.2 cgd bus_size_t size; 437 1.2.2.2 cgd int flags; 438 1.2.2.2 cgd { 439 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 440 1.2.2.2 cgd int error; 441 1.2.2.2 cgd 442 1.2.2.2 cgd error = pci_sgmap_pte64_load_raw(t, map, segs, nsegs, size, flags, 443 1.2.2.2 cgd &lcp->lc_sgmap); 444 1.2.2.2 cgd if (error == 0) 445 1.2.2.2 cgd LCA_TLB_INVALIDATE(); 446 1.2.2.2 cgd 447 1.2.2.2 cgd return (error); 448 1.2.2.2 cgd } 449 1.2.2.2 cgd 450 1.2.2.2 cgd /* 451 1.2.2.2 cgd * Unload an LCA DMA map. 452 1.2.2.2 cgd */ 453 1.2.2.2 cgd void 454 1.2.2.2 cgd lca_bus_dmamap_unload_sgmap(t, map) 455 1.2.2.2 cgd bus_dma_tag_t t; 456 1.2.2.2 cgd bus_dmamap_t map; 457 1.2.2.2 cgd { 458 1.2.2.2 cgd struct lca_config *lcp = t->_cookie; 459 1.2.2.2 cgd 460 1.2.2.2 cgd /* 461 1.2.2.2 cgd * Invalidate any SGMAP page table entries used by this 462 1.2.2.2 cgd * mapping. 463 1.2.2.2 cgd */ 464 1.2.2.2 cgd pci_sgmap_pte64_unload(t, map, &lcp->lc_sgmap); 465 1.2.2.2 cgd LCA_TLB_INVALIDATE(); 466 1.2.2.2 cgd 467 1.2.2.2 cgd /* 468 1.2.2.2 cgd * Do the generic bits of the unload. 469 1.2.2.2 cgd */ 470 1.2.2.2 cgd _bus_dmamap_unload(t, map); 471 1.2.2.2 cgd } 472
Indexes created Sun Oct 26 17:10:13 GMT 2025