Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/dp83932var.h
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1 /* $NetBSD: dp83932var.h,v 1.11 2008/04/28 20:23:49 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 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. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _DEV_IC_DP83932VAR_H_ 33 #define _DEV_IC_DP83932VAR_H_ 34 35 /* 36 * Data structure definitions for the National Semiconductor DP83932 37 * Systems-Oriented Network Interface Controller (SONIC). 38 */ 39 40 /* 41 * NOTE: The control data for the SONIC must not cross a 64k boundary, 42 * so we have to be careful about how we size things. 43 * 44 * Also, since the SONIC is only a 10Mb/s chip, and systems on which 45 * it is present tend to be low on memory, we try to keep the data 46 * structure sizes small. 47 */ 48 49 /* 50 * Transmit descriptor list size. 51 */ 52 #define SONIC_NTXDESC 32 53 #define SONIC_NTXDESC_MASK (SONIC_NTXDESC - 1) 54 #define SONIC_NEXTTX(x) (((x) + 1) & SONIC_NTXDESC_MASK) 55 56 /* 57 * Receive descriptor list size. 58 */ 59 #define SONIC_NRXDESC 32 60 #define SONIC_NRXDESC_MASK (SONIC_NRXDESC - 1) 61 #define SONIC_NEXTRX(x) (((x) + 1) & SONIC_NRXDESC_MASK) 62 #define SONIC_PREVRX(x) (((x) - 1) & SONIC_NRXDESC_MASK) 63 #define SONIC_RXSEQ_TO_DESC(x) ((x) & SONIC_NRXDESC_MASK) 64 65 /* 66 * Number of CAM entries. 67 */ 68 #define SONIC_NCAMENT 16 69 70 /* 71 * Control structures are DMA'd to the SONIC chip. We allocate them in 72 * a single clump that maps to a single DMA segment to make several things 73 * easier. 74 */ 75 struct sonic_control_data16 { 76 /* 77 * The transmit descriptors. 78 */ 79 struct sonic_tda16 scd_txdescs[SONIC_NTXDESC]; 80 81 /* 82 * The receive descriptors. 83 */ 84 struct sonic_rda16 scd_rxdescs[SONIC_NRXDESC]; 85 86 /* 87 * The receive resource descriptors. 88 */ 89 struct sonic_rra16 scd_rxbufs[SONIC_NRXDESC]; 90 91 /* 92 * The CAM descriptors. 93 */ 94 struct sonic_cda16 scd_cam[SONIC_NCAMENT]; 95 uint16_t scd_camenable; 96 }; 97 98 #define SONIC_CDOFF16(x) offsetof(struct sonic_control_data16, x) 99 #define SONIC_CDTXOFF16(x) SONIC_CDOFF16(scd_txdescs[(x)]) 100 #define SONIC_CDRXOFF16(x) SONIC_CDOFF16(scd_rxdescs[(x)]) 101 #define SONIC_CDRROFF16(x) SONIC_CDOFF16(scd_rxbufs[(x)]) 102 #define SONIC_CDCAMOFF16 SONIC_CDOFF16(scd_cam) 103 #define SONIC_CDCAMSIZE16 \ 104 (sizeof(struct sonic_cda16) * SONIC_NCAMENT + sizeof(uint16_t)) 105 106 struct sonic_control_data32 { 107 /* 108 * The transmit descriptors. 109 */ 110 struct sonic_tda32 scd_txdescs[SONIC_NTXDESC]; 111 112 /* 113 * The receive descriptors. 114 */ 115 struct sonic_rda32 scd_rxdescs[SONIC_NRXDESC]; 116 117 /* 118 * The receive resource descriptors. 119 */ 120 struct sonic_rra32 scd_rxbufs[SONIC_NRXDESC]; 121 122 /* 123 * The CAM descriptors. 124 */ 125 struct sonic_cda32 scd_cam[SONIC_NCAMENT]; 126 uint32_t scd_camenable; 127 }; 128 129 #define SONIC_CDOFF32(x) offsetof(struct sonic_control_data32, x) 130 #define SONIC_CDTXOFF32(x) SONIC_CDOFF32(scd_txdescs[(x)]) 131 #define SONIC_CDRXOFF32(x) SONIC_CDOFF32(scd_rxdescs[(x)]) 132 #define SONIC_CDRROFF32(x) SONIC_CDOFF32(scd_rxbufs[(x)]) 133 #define SONIC_CDCAMOFF32 SONIC_CDOFF32(scd_cam) 134 #define SONIC_CDCAMSIZE32 \ 135 (sizeof(struct sonic_cda32) * SONIC_NCAMENT + sizeof(uint32_t)) 136 137 /* 138 * Software state for transmit and receive descriptors. 139 */ 140 struct sonic_descsoft { 141 struct mbuf *ds_mbuf; /* head of mbuf chain */ 142 bus_dmamap_t ds_dmamap; /* our DMA map */ 143 }; 144 145 /* 146 * Software state per device. 147 */ 148 struct sonic_softc { 149 device_t sc_dev; /* generic device information */ 150 bus_space_tag_t sc_st; /* bus space tag */ 151 bus_space_handle_t sc_sh; /* bus space handle */ 152 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 153 struct ethercom sc_ethercom; /* ethernet common data */ 154 void *sc_sdhook; /* shutdown hook */ 155 156 int sc_32bit; /* use 32-bit mode */ 157 int sc_bigendian; /* BMODE -> Vcc */ 158 159 /* Our register map. */ 160 bus_addr_t sc_regmap[SONIC_NREGS]; 161 162 bus_dmamap_t sc_cddmamap; /* control data DMA map */ 163 #define sc_cddma sc_cddmamap->dm_segs[0].ds_addr 164 bus_dmamap_t sc_nulldmamap; /* DMA map for the pad buffer */ 165 #define sc_nulldma sc_nulldmamap->dm_segs[0].ds_addr 166 167 /* 168 * Software state for transmit and receive descriptors. 169 */ 170 struct sonic_descsoft sc_txsoft[SONIC_NTXDESC]; 171 struct sonic_descsoft sc_rxsoft[SONIC_NRXDESC]; 172 173 /* 174 * Control data structures. 175 */ 176 union { 177 struct sonic_control_data16 *cdun_16; 178 struct sonic_control_data32 *cdun_32; 179 } sc_cdun; 180 #define sc_cdata16 sc_cdun.cdun_16 181 #define sc_cdata32 sc_cdun.cdun_32 182 183 #define sc_tda16 sc_cdun.cdun_16->scd_txdescs 184 #define sc_rda16 sc_cdun.cdun_16->scd_rxdescs 185 #define sc_rra16 sc_cdun.cdun_16->scd_rxbufs 186 #define sc_cda16 sc_cdun.cdun_16->scd_cam 187 #define sc_cdaenable16 sc_cdun.cdun_16->scd_camenable 188 189 #define sc_tda32 sc_cdun.cdun_32->scd_txdescs 190 #define sc_rda32 sc_cdun.cdun_32->scd_rxdescs 191 #define sc_rra32 sc_cdun.cdun_32->scd_rxbufs 192 #define sc_cda32 sc_cdun.cdun_32->scd_cam 193 #define sc_cdaenable32 sc_cdun.cdun_32->scd_camenable 194 195 int sc_txpending; /* number of Tx requests pending */ 196 int sc_txdirty; /* first dirty Tx descriptor */ 197 int sc_txlast; /* last used Tx descriptor */ 198 199 int sc_rxptr; /* next ready Rx descriptor */ 200 201 uint16_t sc_imr; /* prototype IMR */ 202 uint16_t sc_dcr; /* prototype DCR */ 203 uint16_t sc_dcr2; /* prototype DCR2 */ 204 }; 205 206 #define CSR_READ(sc, reg) \ 207 bus_space_read_2((sc)->sc_st, (sc)->sc_sh, \ 208 (sc)->sc_regmap[(reg)]) 209 210 #define CSR_WRITE(sc, reg, val) \ 211 bus_space_write_2((sc)->sc_st, (sc)->sc_sh, \ 212 (sc)->sc_regmap[(reg)], (val)) 213 214 #define SONIC_CDTXADDR16(sc, x) \ 215 ((sc)->sc_cddma + SONIC_CDTXOFF16((x))) 216 217 #define SONIC_CDTXADDR32(sc, x) \ 218 ((sc)->sc_cddma + SONIC_CDTXOFF32((x))) 219 220 #define SONIC_CDTXADDR(sc, x) \ 221 ((sc)->sc_32bit ? SONIC_CDTXADDR32((sc), (x)) : \ 222 SONIC_CDTXADDR16((sc), (x))) 223 224 #define SONIC_CDRXADDR16(sc, x) \ 225 ((sc)->sc_cddma + SONIC_CDRXOFF16((x))) 226 227 #define SONIC_CDRXADDR32(sc, x) \ 228 ((sc)->sc_cddma + SONIC_CDRXOFF32((x))) 229 230 #define SONIC_CDRXADDR(sc, x) \ 231 ((sc)->sc_32bit ? SONIC_CDRXADDR32((sc), (x)) : \ 232 SONIC_CDRXADDR16((sc), (x))) 233 234 #define SONIC_CDRRADDR(sc, x) \ 235 ((sc)->sc_cddma + \ 236 ((sc)->sc_32bit ? SONIC_CDRROFF32((x)) : SONIC_CDRROFF16((x)))) 237 238 #define SONIC_CDCAMADDR(sc) \ 239 ((sc)->sc_cddma + \ 240 ((sc)->sc_32bit ? SONIC_CDCAMOFF32 : SONIC_CDCAMOFF16)) 241 242 #define SONIC_CDTXSYNC16(sc, x, ops) \ 243 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 244 SONIC_CDTXOFF16((x)), sizeof(struct sonic_tda16), (ops)) 245 246 #define SONIC_CDTXSYNC32(sc, x, ops) \ 247 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 248 SONIC_CDTXOFF32((x)), sizeof(struct sonic_tda32), (ops)) 249 250 #define SONIC_CDRXSYNC16(sc, x, ops) \ 251 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 252 SONIC_CDRXOFF16((x)), sizeof(struct sonic_rda16), (ops)) 253 254 #define SONIC_CDRXSYNC32(sc, x, ops) \ 255 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 256 SONIC_CDRXOFF32((x)), sizeof(struct sonic_rda32), (ops)) 257 258 #define SONIC_CDRRSYNC16(sc, x, ops) \ 259 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 260 SONIC_CDRROFF16((x)), sizeof(struct sonic_rra16), (ops)) 261 262 #define SONIC_CDRRSYNC32(sc, x, ops) \ 263 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 264 SONIC_CDRROFF32((x)), sizeof(struct sonic_rra32), (ops)) 265 266 #define SONIC_CDCAMSYNC(sc, ops) \ 267 do { \ 268 if ((sc)->sc_32bit) \ 269 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 270 SONIC_CDCAMOFF32, SONIC_CDCAMSIZE32, \ 271 (ops)); \ 272 else \ 273 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 274 SONIC_CDCAMOFF16, SONIC_CDCAMSIZE16, \ 275 (ops)); \ 276 } while (/*CONSTCOND*/0) 277 278 #define SONIC_INIT_RXDESC(sc, x) \ 279 do { \ 280 struct sonic_descsoft *__ds = &(sc)->sc_rxsoft[(x)]; \ 281 struct mbuf *__m = __ds->ds_mbuf; \ 282 \ 283 if ((sc)->sc_32bit) { \ 284 /* \ 285 * Unfortuantely, in 32-bit mode, the Rx buffer must \ 286 * be 32-bit aligned. \ 287 */ \ 288 struct sonic_rda32 *__rda = &(sc)->sc_rda32[(x)]; \ 289 struct sonic_rda32 *__prda = \ 290 &(sc)->sc_rda32[SONIC_PREVRX((x))]; \ 291 struct sonic_rra32 *__rra = &(sc)->sc_rra32[(x)]; \ 292 \ 293 __m->m_data = __m->m_ext.ext_buf; \ 294 \ 295 __rra->rra_ptr1 = \ 296 __ds->ds_dmamap->dm_segs[0].ds_addr >> 16; \ 297 __rra->rra_ptr0 = \ 298 __ds->ds_dmamap->dm_segs[0].ds_addr & 0xffff; \ 299 __rra->rra_wc1 = 0; \ 300 __rra->rra_wc0 = (ETHER_MAX_LEN + 6) / 2; \ 301 \ 302 __rda->rda_link = \ 303 (SONIC_CDRXADDR32((sc), SONIC_NEXTRX((x))) & 0xffff) |\ 304 RDA_LINK_EOL; \ 305 __rda->rda_inuse = 1; \ 306 \ 307 __prda->rda_link = SONIC_CDRXADDR32((sc), (x)); \ 308 \ 309 SONIC_CDRRSYNC32((sc), (x), BUS_DMASYNC_PREWRITE); \ 310 SONIC_CDRXSYNC32((sc), (x), \ 311 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 312 SONIC_CDRXSYNC32((sc), SONIC_PREVRX(x), \ 313 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 314 } else { \ 315 /* \ 316 * In 16-bit mode, we scoot the packet forward 2 bytes \ 317 * so that the payload after the Ethernet header is \ 318 * suitably aligned. \ 319 */ \ 320 struct sonic_rda16 *__rda = &(sc)->sc_rda16[(x)]; \ 321 struct sonic_rda16 *__prda = \ 322 &(sc)->sc_rda16[SONIC_PREVRX((x))]; \ 323 struct sonic_rra16 *__rra = &(sc)->sc_rra16[(x)]; \ 324 \ 325 __m->m_data = __m->m_ext.ext_buf + 2; \ 326 \ 327 __rra->rra_ptr1 = \ 328 __ds->ds_dmamap->dm_segs[0].ds_addr >> 16; \ 329 __rra->rra_ptr0 = \ 330 (__ds->ds_dmamap->dm_segs[0].ds_addr + 2) & 0xffff; \ 331 __rra->rra_wc1 = 0; \ 332 __rra->rra_wc0 = (ETHER_MAX_LEN + 2) / 2; \ 333 \ 334 __rda->rda_link = \ 335 (SONIC_CDRXADDR16((sc), SONIC_NEXTRX((x))) & 0xffff) |\ 336 RDA_LINK_EOL; \ 337 __rda->rda_inuse = 1; \ 338 \ 339 __prda->rda_link = SONIC_CDRXADDR16((sc), (x)); \ 340 \ 341 SONIC_CDRRSYNC16((sc), (x), BUS_DMASYNC_PREWRITE); \ 342 SONIC_CDRXSYNC16((sc), (x), \ 343 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 344 SONIC_CDRXSYNC16((sc), SONIC_PREVRX(x), \ 345 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 346 } \ 347 } while (/*CONSTCOND*/0) 348 349 static __inline uint16_t __unused 350 htosonic16(struct sonic_softc *sc, uint16_t val) 351 { 352 353 if (sc->sc_bigendian) 354 return (htobe16(val)); 355 return (htole16(val)); 356 } 357 358 static __inline uint16_t __unused 359 sonic16toh(struct sonic_softc *sc, uint16_t val) 360 { 361 362 if (sc->sc_bigendian) 363 return (be16toh(val)); 364 return (le16toh(val)); 365 } 366 367 static __inline uint32_t __unused 368 htosonic32(struct sonic_softc *sc, uint32_t val) 369 { 370 371 if (sc->sc_bigendian) 372 return (htobe32(val)); 373 return (htole32(val)); 374 } 375 376 static __inline uint32_t __unused 377 sonic32toh(struct sonic_softc *sc, uint32_t val) 378 { 379 380 if (sc->sc_bigendian) 381 return (be32toh(val)); 382 return (le32toh(val)); 383 } 384 385 #ifdef _KERNEL 386 void sonic_attach(struct sonic_softc *, const uint8_t *); 387 int sonic_intr(void *); 388 #endif /* _KERNEL */ 389 390 #endif /* _DEV_IC_DP83932VAR_H_ */
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