bus_defs.h revision 1.5
1 /* $NetBSD: bus_defs.h,v 1.5 2019/09/23 16:17:58 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997-1999, 2001 Eduardo E. Horvath. All rights reserved. 35 * Copyright (c) 1996 Charles M. Hannum. All rights reserved. 36 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Christopher G. Demetriou 49 * for the NetBSD Project. 50 * 4. The name of the author may not be used to endorse or promote products 51 * derived from this software without specific prior written permission 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 62 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65 #ifndef _SPARC64_BUS_DEFS_H_ 66 #define _SPARC64_BUS_DEFS_H_ 67 68 #include <machine/types.h> 69 #include <machine/ctlreg.h> 70 71 /* 72 * Debug hooks 73 */ 74 75 #define BSDB_ACCESS 0x01 76 #define BSDB_MAP 0x02 77 78 /* 79 * UPA and SBUS spaces are non-cached and big endian 80 * (except for RAM and PROM) 81 * 82 * PCI spaces are non-cached and little endian 83 */ 84 85 enum bus_type { 86 UPA_BUS_SPACE, 87 SBUS_BUS_SPACE, 88 PCI_CONFIG_BUS_SPACE, 89 PCI_IO_BUS_SPACE, 90 PCI_MEMORY_BUS_SPACE, 91 LAST_BUS_SPACE 92 }; 93 /* For backwards compatibility */ 94 #define SPARC_BUS_SPACE UPA_BUS_SPACE 95 96 #define __BUS_SPACE_HAS_STREAM_METHODS 1 97 98 /* 99 * Bus address and size types 100 */ 101 typedef struct _bus_space_handle { 102 uint64_t _ptr; 103 uint8_t _asi; 104 uint8_t _sasi; 105 } bus_space_handle_t; 106 typedef enum bus_type bus_type_t; 107 typedef uint64_t bus_addr_t; 108 typedef uint64_t bus_size_t; 109 110 #define PRIxBUSADDR PRIx64 111 #define PRIxBUSSIZE PRIx64 112 #define PRIuBUSSIZE PRIu64 113 114 /* 115 * XXXX -- convert prom virtual address to bus_space_handle_t 116 */ 117 #define sparc_promaddr_to_handle(tag, promaddr, hp) \ 118 do { \ 119 (hp)->_ptr = (uint64_t)(promaddr); \ 120 (hp)->_asi = ASI_PRIMARY; \ 121 (hp)->_sasi = ASI_PRIMARY; \ 122 } while (0) 123 124 /* For buses which have an iospace. */ 125 #define BUS_ADDR_IOSPACE(x) ((x)>>32) 126 #define BUS_ADDR_PADDR(x) ((x)&0xffffffff) 127 #define BUS_ADDR(io, pa) ((((bus_addr_t)io)<<32)|(pa)) 128 129 /* 130 * Access methods for bus resources and address space. 131 */ 132 typedef struct sparc_bus_space_tag *bus_space_tag_t; 133 134 struct sparc_bus_space_tag { 135 void *cookie; 136 bus_space_tag_t parent; 137 /* 138 * Windows onto the parent bus that this tag maps. If ranges 139 * is non-NULL, the address will be translated, and recursively 140 * mapped via the parent tag. 141 */ 142 struct openprom_range *ranges; 143 int nranges; 144 145 int type; 146 147 int (*sparc_bus_alloc)(bus_space_tag_t, bus_addr_t, 148 bus_addr_t, bus_size_t, bus_size_t, bus_size_t, int, 149 bus_addr_t *, bus_space_handle_t *); 150 151 void (*sparc_bus_free)(bus_space_tag_t, bus_space_handle_t, 152 bus_size_t); 153 154 int (*sparc_bus_map)(bus_space_tag_t, bus_addr_t, bus_size_t, 155 int, vaddr_t, bus_space_handle_t *); 156 157 int (*sparc_bus_unmap)(bus_space_tag_t, bus_space_handle_t, 158 bus_size_t); 159 160 int (*sparc_bus_subregion)(bus_space_tag_t, 161 bus_space_handle_t, bus_size_t, bus_size_t, 162 bus_space_handle_t *); 163 164 paddr_t (*sparc_bus_mmap)(bus_space_tag_t, bus_addr_t, off_t, 165 int, int); 166 167 void *(*sparc_intr_establish)(bus_space_tag_t, int, int, 168 int (*)(void *), void *, void (*)(void)); 169 170 }; 171 172 /* flags for bus space map functions */ 173 #define BUS_SPACE_MAP_READONLY 0x0008 174 #define BUS_SPACE_MAP_BUS1 0x0100 175 #define BUS_SPACE_MAP_BUS2 0x0200 176 #define BUS_SPACE_MAP_BUS3 0x0400 177 #define BUS_SPACE_MAP_BUS4 0x0800 178 #define BUS_SPACE_MAP_LITTLE 0x1000 179 /* sparc uses this, it's not supposed to do anything on sparc64 */ 180 #define BUS_SPACE_MAP_LARGE 0 181 182 /* flags for bus_space_barrier() */ 183 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 184 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 185 186 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 187 188 /* 189 * Flags used in various bus DMA methods. 190 */ 191 #define BUS_DMA_NOWRITE BUS_DMA_BUS1 192 #define BUS_DMA_DVMA BUS_DMA_BUS2 /* Don't bother with alignment */ 193 194 /* Forwards needed by prototypes below. */ 195 struct mbuf; 196 struct uio; 197 198 /* 199 * Operations performed by bus_dmamap_sync(). 200 */ 201 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 202 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 203 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 204 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 205 206 typedef struct sparc_bus_dma_tag *bus_dma_tag_t; 207 typedef struct sparc_bus_dmamap *bus_dmamap_t; 208 209 #define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0) 210 211 /* 212 * bus_dma_segment_t 213 * 214 * Describes a single contiguous DMA transaction. Values 215 * are suitable for programming into DMA registers. 216 */ 217 struct sparc_bus_dma_segment { 218 bus_addr_t ds_addr; /* DVMA address */ 219 bus_size_t ds_len; /* length of transfer */ 220 bus_size_t _ds_boundary; /* don't cross this */ 221 bus_size_t _ds_align; /* align to this */ 222 void *_ds_mlist; /* XXX - dmamap_alloc'ed pages */ 223 }; 224 typedef struct sparc_bus_dma_segment bus_dma_segment_t; 225 226 227 /* 228 * bus_dma_tag_t 229 * 230 * A machine-dependent opaque type describing the implementation of 231 * DMA for a given bus. 232 */ 233 struct sparc_bus_dma_tag { 234 void *_cookie; /* cookie used in the guts */ 235 struct sparc_bus_dma_tag* _parent; 236 237 /* 238 * DMA mapping methods. 239 */ 240 int (*_dmamap_create)(bus_dma_tag_t, bus_size_t, int, 241 bus_size_t, bus_size_t, int, bus_dmamap_t *); 242 void (*_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t); 243 int (*_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *, 244 bus_size_t, struct proc *, int); 245 int (*_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t, 246 struct mbuf *, int); 247 int (*_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t, 248 struct uio *, int); 249 int (*_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t, 250 bus_dma_segment_t *, int, bus_size_t, int); 251 void (*_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t); 252 void (*_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t, 253 bus_addr_t, bus_size_t, int); 254 255 /* 256 * DMA memory utility functions. 257 */ 258 int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t, 259 bus_size_t, bus_dma_segment_t *, int, int *, int); 260 void (*_dmamem_free)(bus_dma_tag_t, bus_dma_segment_t *, int); 261 int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *, 262 int, size_t, void **, int); 263 void (*_dmamem_unmap)(bus_dma_tag_t, void *, size_t); 264 paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *, 265 int, off_t, int, int); 266 }; 267 268 /* 269 * bus_dmamap_t 270 * 271 * Describes a DMA mapping. 272 */ 273 struct sparc_bus_dmamap { 274 /* 275 * PRIVATE MEMBERS: not for use by machine-independent code. 276 */ 277 bus_addr_t _dm_dvmastart; /* start and size of allocated */ 278 bus_size_t _dm_dvmasize; /* DVMA segment for this map. */ 279 280 bus_size_t _dm_size; /* largest DMA transfer mappable */ 281 bus_size_t _dm_maxmaxsegsz; /* fixed largest possible segment */ 282 bus_size_t _dm_boundary; /* don't cross this */ 283 int _dm_segcnt; /* number of segs this map can map */ 284 int _dm_flags; /* misc. flags */ 285 #define _DM_TYPE_LOAD 0 286 #define _DM_TYPE_SEGS 1 287 #define _DM_TYPE_UIO 2 288 #define _DM_TYPE_MBUF 3 289 int _dm_type; /* type of mapping: raw, uio, mbuf, etc */ 290 void *_dm_source; /* source mbuf, uio, etc. needed for unload */ 291 292 void *_dm_cookie; /* cookie for bus-specific functions */ 293 294 /* 295 * PUBLIC MEMBERS: these are used by machine-independent code. 296 */ 297 bus_size_t dm_maxsegsz; /* largest possible segment */ 298 bus_size_t dm_mapsize; /* size of the mapping */ 299 int dm_nsegs; /* # valid segments in mapping */ 300 bus_dma_segment_t dm_segs[1]; /* segments; variable length */ 301 }; 302 303 #endif /* _SPARC64_BUS_DEFS_H_ */ 304
Indexes created Mon Oct 27 04:09:48 GMT 2025