bus_dma_jazz.c revision 1.3.2.2
1 1.3.2.2 bouyer /* $NetBSD: bus_dma_jazz.c,v 1.3.2.2 2000/11/20 20:00:40 bouyer Exp $ */ 2 1.3.2.2 bouyer 3 1.3.2.2 bouyer /*- 4 1.3.2.2 bouyer * Copyright (C) 2000 Shuichiro URATA. All rights reserved. 5 1.3.2.2 bouyer * 6 1.3.2.2 bouyer * Redistribution and use in source and binary forms, with or without 7 1.3.2.2 bouyer * modification, are permitted provided that the following conditions 8 1.3.2.2 bouyer * are met: 9 1.3.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 10 1.3.2.2 bouyer * notice, this list of conditions and the following disclaimer. 11 1.3.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 12 1.3.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 13 1.3.2.2 bouyer * documentation and/or other materials provided with the distribution. 14 1.3.2.2 bouyer * 3. The name of the author may not be used to endorse or promote products 15 1.3.2.2 bouyer * derived from this software without specific prior written permission. 16 1.3.2.2 bouyer * 17 1.3.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 1.3.2.2 bouyer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 1.3.2.2 bouyer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 1.3.2.2 bouyer * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 1.3.2.2 bouyer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 1.3.2.2 bouyer * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 1.3.2.2 bouyer * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 1.3.2.2 bouyer * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 1.3.2.2 bouyer * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 1.3.2.2 bouyer * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 1.3.2.2 bouyer */ 28 1.3.2.2 bouyer 29 1.3.2.2 bouyer #include <sys/param.h> 30 1.3.2.2 bouyer #include <sys/systm.h> 31 1.3.2.2 bouyer #include <sys/mbuf.h> 32 1.3.2.2 bouyer #include <sys/device.h> 33 1.3.2.2 bouyer 34 1.3.2.2 bouyer #include <uvm/uvm_extern.h> 35 1.3.2.2 bouyer 36 1.3.2.2 bouyer #define _ARC_BUS_DMA_PRIVATE 37 1.3.2.2 bouyer #include <machine/bus.h> 38 1.3.2.2 bouyer 39 1.3.2.2 bouyer #include <arc/jazz/jazzdmatlbreg.h> 40 1.3.2.2 bouyer #include <arc/jazz/jazzdmatlbvar.h> 41 1.3.2.2 bouyer 42 1.3.2.2 bouyer static int jazz_bus_dmamap_alloc_sgmap __P((bus_dma_tag_t, 43 1.3.2.2 bouyer bus_dma_segment_t *, int, bus_size_t, struct proc *, int)); 44 1.3.2.2 bouyer static void jazz_bus_dmamap_free_sgmap __P((bus_dma_tag_t, 45 1.3.2.2 bouyer bus_dma_segment_t *, int)); 46 1.3.2.2 bouyer 47 1.3.2.2 bouyer int jazz_bus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *, 48 1.3.2.2 bouyer bus_size_t, struct proc *, int)); 49 1.3.2.2 bouyer int jazz_bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t, 50 1.3.2.2 bouyer struct mbuf *, int)); 51 1.3.2.2 bouyer int jazz_bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t, 52 1.3.2.2 bouyer struct uio *, int)); 53 1.3.2.2 bouyer int jazz_bus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t, 54 1.3.2.2 bouyer bus_dma_segment_t *, int, bus_size_t, int)); 55 1.3.2.2 bouyer void jazz_bus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t)); 56 1.3.2.2 bouyer void jazz_mips1_bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, 57 1.3.2.2 bouyer bus_addr_t, bus_size_t, int)); 58 1.3.2.2 bouyer void jazz_mips3_bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, 59 1.3.2.2 bouyer bus_addr_t, bus_size_t, int)); 60 1.3.2.2 bouyer 61 1.3.2.2 bouyer void 62 1.3.2.2 bouyer jazz_bus_dma_tag_init(t) 63 1.3.2.2 bouyer bus_dma_tag_t t; 64 1.3.2.2 bouyer { 65 1.3.2.2 bouyer _bus_dma_tag_init(t); 66 1.3.2.2 bouyer 67 1.3.2.2 bouyer t->_dmamap_load = jazz_bus_dmamap_load; 68 1.3.2.2 bouyer t->_dmamap_load_mbuf = jazz_bus_dmamap_load_mbuf; 69 1.3.2.2 bouyer t->_dmamap_load_uio = jazz_bus_dmamap_load_uio; 70 1.3.2.2 bouyer t->_dmamap_load_raw = jazz_bus_dmamap_load_raw; 71 1.3.2.2 bouyer t->_dmamap_unload = jazz_bus_dmamap_unload; 72 1.3.2.2 bouyer #if defined(MIPS1) && defined(MIPS3) 73 1.3.2.2 bouyer t->_dmamap_sync = (CPUISMIPS3) ? 74 1.3.2.2 bouyer jazz_mips3_bus_dmamap_sync : jazz_mips1_bus_dmamap_sync; 75 1.3.2.2 bouyer #elif defined(MIPS1) 76 1.3.2.2 bouyer t->_dmamap_sync = jazz_mips1_bus_dmamap_sync; 77 1.3.2.2 bouyer #elif defined(MIPS3) 78 1.3.2.2 bouyer t->_dmamap_sync = jazz_mips3_bus_dmamap_sync; 79 1.3.2.2 bouyer #else 80 1.3.2.2 bouyer #error neither MIPS1 nor MIPS3 is defined 81 1.3.2.2 bouyer #endif 82 1.3.2.2 bouyer t->_dmamem_alloc = _bus_dmamem_alloc; 83 1.3.2.2 bouyer t->_dmamem_free = _bus_dmamem_free; 84 1.3.2.2 bouyer } 85 1.3.2.2 bouyer 86 1.3.2.2 bouyer static int 87 1.3.2.2 bouyer jazz_bus_dmamap_alloc_sgmap(t, segs, nsegs, boundary, p, flags) 88 1.3.2.2 bouyer bus_dma_tag_t t; 89 1.3.2.2 bouyer bus_dma_segment_t *segs; 90 1.3.2.2 bouyer int nsegs; 91 1.3.2.2 bouyer bus_size_t boundary; 92 1.3.2.2 bouyer struct proc *p; 93 1.3.2.2 bouyer int flags; 94 1.3.2.2 bouyer { 95 1.3.2.2 bouyer jazz_dma_pte_t *dmapte; 96 1.3.2.2 bouyer bus_addr_t addr; 97 1.3.2.2 bouyer bus_size_t off; 98 1.3.2.2 bouyer int i, npte; 99 1.3.2.2 bouyer 100 1.3.2.2 bouyer for (i = 0; i < nsegs; i++) { 101 1.3.2.2 bouyer off = jazz_dma_page_offs(segs[i]._ds_paddr); 102 1.3.2.2 bouyer npte = jazz_dma_page_round(segs[i].ds_len + off) / 103 1.3.2.2 bouyer JAZZ_DMA_PAGE_SIZE; 104 1.3.2.2 bouyer dmapte = jazz_dmatlb_alloc(npte, boundary, flags, &addr); 105 1.3.2.2 bouyer if (dmapte == NULL) 106 1.3.2.2 bouyer return (ENOMEM); 107 1.3.2.2 bouyer segs[i].ds_addr = addr + off; 108 1.3.2.2 bouyer 109 1.3.2.2 bouyer jazz_dmatlb_map_pa(segs[i]._ds_paddr, segs[i].ds_len, dmapte); 110 1.3.2.2 bouyer } 111 1.3.2.2 bouyer return (0); 112 1.3.2.2 bouyer } 113 1.3.2.2 bouyer 114 1.3.2.2 bouyer static void 115 1.3.2.2 bouyer jazz_bus_dmamap_free_sgmap(t, segs, nsegs) 116 1.3.2.2 bouyer bus_dma_tag_t t; 117 1.3.2.2 bouyer bus_dma_segment_t *segs; 118 1.3.2.2 bouyer int nsegs; 119 1.3.2.2 bouyer { 120 1.3.2.2 bouyer int i, npte; 121 1.3.2.2 bouyer bus_addr_t addr; 122 1.3.2.2 bouyer 123 1.3.2.2 bouyer for (i = 0; i < nsegs; i++) { 124 1.3.2.2 bouyer addr = (segs[i].ds_addr - t->dma_offset) & JAZZ_DMA_PAGE_NUM; 125 1.3.2.2 bouyer npte = jazz_dma_page_round(segs[i].ds_len + 126 1.3.2.2 bouyer jazz_dma_page_offs(segs[i].ds_addr)) / JAZZ_DMA_PAGE_SIZE; 127 1.3.2.2 bouyer jazz_dmatlb_free(addr, npte); 128 1.3.2.2 bouyer } 129 1.3.2.2 bouyer } 130 1.3.2.2 bouyer 131 1.3.2.2 bouyer /* 132 1.3.2.2 bouyer * function for loading a direct-mapped DMA map with a linear buffer. 133 1.3.2.2 bouyer */ 134 1.3.2.2 bouyer int 135 1.3.2.2 bouyer jazz_bus_dmamap_load(t, map, buf, buflen, p, flags) 136 1.3.2.2 bouyer bus_dma_tag_t t; 137 1.3.2.2 bouyer bus_dmamap_t map; 138 1.3.2.2 bouyer void *buf; 139 1.3.2.2 bouyer bus_size_t buflen; 140 1.3.2.2 bouyer struct proc *p; 141 1.3.2.2 bouyer int flags; 142 1.3.2.2 bouyer { 143 1.3.2.2 bouyer int error = _bus_dmamap_load(t, map, buf, buflen, p, flags); 144 1.3.2.2 bouyer 145 1.3.2.2 bouyer if (error == 0) { 146 1.3.2.2 bouyer error = jazz_bus_dmamap_alloc_sgmap(t, map->dm_segs, 147 1.3.2.2 bouyer map->dm_nsegs, map->_dm_boundary, p, flags); 148 1.3.2.2 bouyer } 149 1.3.2.2 bouyer return (error); 150 1.3.2.2 bouyer } 151 1.3.2.2 bouyer 152 1.3.2.2 bouyer /* 153 1.3.2.2 bouyer * Like jazz_bus_dmamap_load(), but for mbufs. 154 1.3.2.2 bouyer */ 155 1.3.2.2 bouyer int 156 1.3.2.2 bouyer jazz_bus_dmamap_load_mbuf(t, map, m0, flags) 157 1.3.2.2 bouyer bus_dma_tag_t t; 158 1.3.2.2 bouyer bus_dmamap_t map; 159 1.3.2.2 bouyer struct mbuf *m0; 160 1.3.2.2 bouyer int flags; 161 1.3.2.2 bouyer { 162 1.3.2.2 bouyer int error = _bus_dmamap_load_mbuf(t, map, m0, flags); 163 1.3.2.2 bouyer 164 1.3.2.2 bouyer if (error == 0) { 165 1.3.2.2 bouyer error = jazz_bus_dmamap_alloc_sgmap(t, map->dm_segs, 166 1.3.2.2 bouyer map->dm_nsegs, map->_dm_boundary, NULL, flags); 167 1.3.2.2 bouyer } 168 1.3.2.2 bouyer return (error); 169 1.3.2.2 bouyer } 170 1.3.2.2 bouyer 171 1.3.2.2 bouyer /* 172 1.3.2.2 bouyer * Like jazz_bus_dmamap_load(), but for uios. 173 1.3.2.2 bouyer */ 174 1.3.2.2 bouyer int 175 1.3.2.2 bouyer jazz_bus_dmamap_load_uio(t, map, uio, flags) 176 1.3.2.2 bouyer bus_dma_tag_t t; 177 1.3.2.2 bouyer bus_dmamap_t map; 178 1.3.2.2 bouyer struct uio *uio; 179 1.3.2.2 bouyer int flags; 180 1.3.2.2 bouyer { 181 1.3.2.2 bouyer int error = jazz_bus_dmamap_load_uio(t, map, uio, flags); 182 1.3.2.2 bouyer 183 1.3.2.2 bouyer if (error == 0) { 184 1.3.2.2 bouyer error = jazz_bus_dmamap_alloc_sgmap(t, map->dm_segs, 185 1.3.2.2 bouyer map->dm_nsegs, map->_dm_boundary, 186 1.3.2.2 bouyer uio->uio_segflg == UIO_USERSPACE ? uio->uio_procp : NULL, 187 1.3.2.2 bouyer flags); 188 1.3.2.2 bouyer } 189 1.3.2.2 bouyer return (error); 190 1.3.2.2 bouyer } 191 1.3.2.2 bouyer 192 1.3.2.2 bouyer /* 193 1.3.2.2 bouyer * Like _bus_dmamap_load(), but for raw memory. 194 1.3.2.2 bouyer */ 195 1.3.2.2 bouyer int 196 1.3.2.2 bouyer jazz_bus_dmamap_load_raw(t, map, segs, nsegs, size, flags) 197 1.3.2.2 bouyer bus_dma_tag_t t; 198 1.3.2.2 bouyer bus_dmamap_t map; 199 1.3.2.2 bouyer bus_dma_segment_t *segs; 200 1.3.2.2 bouyer int nsegs; 201 1.3.2.2 bouyer bus_size_t size; 202 1.3.2.2 bouyer int flags; 203 1.3.2.2 bouyer { 204 1.3.2.2 bouyer int error = _bus_dmamap_load_raw(t, map, segs, nsegs, size, flags); 205 1.3.2.2 bouyer 206 1.3.2.2 bouyer if (error == 0) { 207 1.3.2.2 bouyer error = jazz_bus_dmamap_alloc_sgmap(t, map->dm_segs, 208 1.3.2.2 bouyer map->dm_nsegs, map->_dm_boundary, NULL, flags); 209 1.3.2.2 bouyer } 210 1.3.2.2 bouyer return (error); 211 1.3.2.2 bouyer } 212 1.3.2.2 bouyer 213 1.3.2.2 bouyer /* 214 1.3.2.2 bouyer * unload a DMA map. 215 1.3.2.2 bouyer */ 216 1.3.2.2 bouyer void 217 1.3.2.2 bouyer jazz_bus_dmamap_unload(t, map) 218 1.3.2.2 bouyer bus_dma_tag_t t; 219 1.3.2.2 bouyer bus_dmamap_t map; 220 1.3.2.2 bouyer { 221 1.3.2.2 bouyer jazz_bus_dmamap_free_sgmap(t, map->dm_segs, map->dm_nsegs); 222 1.3.2.2 bouyer _bus_dmamap_unload(t, map); 223 1.3.2.2 bouyer } 224 1.3.2.2 bouyer 225 1.3.2.2 bouyer #ifdef MIPS1 226 1.3.2.2 bouyer /* 227 1.3.2.2 bouyer * Function for MIPS1 DMA map synchronization. 228 1.3.2.2 bouyer */ 229 1.3.2.2 bouyer void 230 1.3.2.2 bouyer jazz_mips1_bus_dmamap_sync(t, map, offset, len, ops) 231 1.3.2.2 bouyer bus_dma_tag_t t; 232 1.3.2.2 bouyer bus_dmamap_t map; 233 1.3.2.2 bouyer bus_addr_t offset; 234 1.3.2.2 bouyer bus_size_t len; 235 1.3.2.2 bouyer int ops; 236 1.3.2.2 bouyer { 237 1.3.2.2 bouyer /* Flush DMA TLB */ 238 1.3.2.2 bouyer if ((ops & (BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)) != 0) 239 1.3.2.2 bouyer jazz_dmatlb_flush(); 240 1.3.2.2 bouyer 241 1.3.2.2 bouyer return (_mips1_bus_dmamap_sync(t, map, offset, len, ops)); 242 1.3.2.2 bouyer } 243 1.3.2.2 bouyer #endif /* MIPS1 */ 244 1.3.2.2 bouyer 245 1.3.2.2 bouyer #ifdef MIPS3 246 1.3.2.2 bouyer /* 247 1.3.2.2 bouyer * Function for MIPS3 DMA map synchronization. 248 1.3.2.2 bouyer */ 249 1.3.2.2 bouyer void 250 1.3.2.2 bouyer jazz_mips3_bus_dmamap_sync(t, map, offset, len, ops) 251 1.3.2.2 bouyer bus_dma_tag_t t; 252 1.3.2.2 bouyer bus_dmamap_t map; 253 1.3.2.2 bouyer bus_addr_t offset; 254 1.3.2.2 bouyer bus_size_t len; 255 1.3.2.2 bouyer int ops; 256 1.3.2.2 bouyer { 257 1.3.2.2 bouyer /* Flush DMA TLB */ 258 1.3.2.2 bouyer if ((ops & (BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)) != 0) 259 1.3.2.2 bouyer jazz_dmatlb_flush(); 260 1.3.2.2 bouyer 261 1.3.2.2 bouyer return (_mips3_bus_dmamap_sync(t, map, offset, len, ops)); 262 1.3.2.2 bouyer } 263 1.3.2.2 bouyer #endif /* MIPS3 */ 264
Indexes created Wed Oct 29 20:09:47 GMT 2025