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 1.4 2003/01/15 22:35:47 bouyer 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _DEV_IC_DP83932VAR_H_ 40 #define _DEV_IC_DP83932VAR_H_ 41 42 /* 43 * Data structure definitions for the National Semiconductor DP83932 44 * Systems-Oriented Network Interface Controller (SONIC). 45 */ 46 47 /* 48 * NOTE: The control data for the SONIC must not cross a 64k boundary, 49 * so we have to be careful about how we size things. 50 * 51 * Also, since the SONIC is only a 10Mb/s chip, and systems on which 52 * it is present tend to be low on memory, we try to keep the data 53 * structure sizes small. 54 */ 55 56 /* 57 * Transmit descriptor list size. 58 */ 59 #define SONIC_NTXDESC 32 60 #define SONIC_NTXDESC_MASK (SONIC_NTXDESC - 1) 61 #define SONIC_NEXTTX(x) (((x) + 1) & SONIC_NTXDESC_MASK) 62 63 /* 64 * Receive descriptor list size. 65 */ 66 #define SONIC_NRXDESC 32 67 #define SONIC_NRXDESC_MASK (SONIC_NRXDESC - 1) 68 #define SONIC_NEXTRX(x) (((x) + 1) & SONIC_NRXDESC_MASK) 69 #define SONIC_PREVRX(x) (((x) - 1) & SONIC_NRXDESC_MASK) 70 #define SONIC_RXSEQ_TO_DESC(x) ((x) & SONIC_NRXDESC_MASK) 71 72 /* 73 * Control structures are DMA'd to the SONIC chip. We allocate them in 74 * a single clump that maps to a single DMA segment to make several things 75 * easier. 76 */ 77 struct sonic_control_data16 { 78 /* 79 * The transmit descriptors. 80 */ 81 struct sonic_tda16 scd_txdescs[SONIC_NTXDESC]; 82 83 /* 84 * The receive descriptors. 85 */ 86 struct sonic_rda16 scd_rxdescs[SONIC_NRXDESC]; 87 88 /* 89 * The receive resource descriptors. 90 */ 91 struct sonic_rra16 scd_rxbufs[SONIC_NRXDESC]; 92 93 /* 94 * The CAM descriptors. 95 */ 96 struct sonic_cda16 scd_cam[16]; 97 }; 98 99 #define SONIC_CDOFF16(x) offsetof(struct sonic_control_data16, x) 100 #define SONIC_CDTXOFF16(x) SONIC_CDOFF16(scd_txdescs[(x)]) 101 #define SONIC_CDRXOFF16(x) SONIC_CDOFF16(scd_rxdescs[(x)]) 102 #define SONIC_CDRROFF16(x) SONIC_CDOFF16(scd_rxbufs[(x)]) 103 #define SONIC_CDCAMOFF16 SONIC_CDOFF16(scd_cam) 104 105 struct sonic_control_data32 { 106 /* 107 * The transmit descriptors. 108 */ 109 struct sonic_tda32 scd_txdescs[SONIC_NTXDESC]; 110 111 /* 112 * The receive descriptors. 113 */ 114 struct sonic_rda32 scd_rxdescs[SONIC_NRXDESC]; 115 116 /* 117 * The receive resource descriptors. 118 */ 119 struct sonic_rra32 scd_rxbufs[SONIC_NRXDESC]; 120 121 /* 122 * The CAM descriptors. 123 */ 124 struct sonic_cda32 scd_cam[16]; 125 }; 126 127 #define SONIC_CDOFF32(x) offsetof(struct sonic_control_data32, x) 128 #define SONIC_CDTXOFF32(x) SONIC_CDOFF32(scd_txdescs[(x)]) 129 #define SONIC_CDRXOFF32(x) SONIC_CDOFF32(scd_rxdescs[(x)]) 130 #define SONIC_CDRROFF32(x) SONIC_CDOFF32(scd_rxbufs[(x)]) 131 #define SONIC_CDCAMOFF32 SONIC_CDOFF32(scd_cam) 132 133 /* 134 * Software state for transmit and receive descriptors. 135 */ 136 struct sonic_descsoft { 137 struct mbuf *ds_mbuf; /* head of mbuf chain */ 138 bus_dmamap_t ds_dmamap; /* our DMA map */ 139 }; 140 141 /* 142 * Software state per device. 143 */ 144 struct sonic_softc { 145 struct device sc_dev; /* generic device information */ 146 bus_space_tag_t sc_st; /* bus space tag */ 147 bus_space_handle_t sc_sh; /* bus space handle */ 148 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 149 struct ethercom sc_ethercom; /* ethernet common data */ 150 void *sc_sdhook; /* shutdown hook */ 151 152 int sc_32bit; /* use 32-bit mode */ 153 int sc_bigendian; /* BMODE -> Vcc */ 154 155 /* Our register map. */ 156 bus_addr_t sc_regmap[SONIC_NREGS]; 157 158 bus_dmamap_t sc_cddmamap; /* control data DMA map */ 159 #define sc_cddma sc_cddmamap->dm_segs[0].ds_addr 160 bus_dmamap_t sc_nulldmamap; /* DMA map for the pad buffer */ 161 #define sc_nulldma sc_nulldmamap->dm_segs[0].ds_addr 162 163 /* 164 * Software state for transmit and receive descriptors. 165 */ 166 struct sonic_descsoft sc_txsoft[SONIC_NTXDESC]; 167 struct sonic_descsoft sc_rxsoft[SONIC_NRXDESC]; 168 169 /* 170 * Control data structures. 171 */ 172 union { 173 struct sonic_control_data16 *cdun_16; 174 struct sonic_control_data32 *cdun_32; 175 } sc_cdun; 176 #define sc_cdata16 sc_cdun.cdun_16 177 #define sc_cdata32 sc_cdun.cdun_32 178 179 #define sc_tda16 sc_cdun.cdun_16->scd_txdescs 180 #define sc_rda16 sc_cdun.cdun_16->scd_rxdescs 181 #define sc_rra16 sc_cdun.cdun_16->scd_rxbufs 182 #define sc_cda16 sc_cdun.cdun_16->scd_cam 183 184 #define sc_tda32 sc_cdun.cdun_32->scd_txdescs 185 #define sc_rda32 sc_cdun.cdun_32->scd_rxdescs 186 #define sc_rra32 sc_cdun.cdun_32->scd_rxbufs 187 #define sc_cda32 sc_cdun.cdun_32->scd_cam 188 189 int sc_txpending; /* number of Tx requests pending */ 190 int sc_txdirty; /* first dirty Tx descriptor */ 191 int sc_txlast; /* last used Tx descriptor */ 192 193 int sc_rxptr; /* next ready Rx descriptor */ 194 195 uint16_t sc_imr; /* prototype IMR */ 196 uint16_t sc_dcr; /* prototype DCR */ 197 uint16_t sc_dcr2; /* prototype DCR2 */ 198 }; 199 200 #define CSR_READ(sc, reg) \ 201 bus_space_read_2((sc)->sc_st, (sc)->sc_sh, \ 202 (sc)->sc_regmap[(reg)]) 203 204 #define CSR_WRITE(sc, reg, val) \ 205 bus_space_write_2((sc)->sc_st, (sc)->sc_sh, \ 206 (sc)->sc_regmap[(reg)], (val)) 207 208 #define SONIC_CDTXADDR16(sc, x) \ 209 ((sc)->sc_cddma + SONIC_CDTXOFF16((x))) 210 211 #define SONIC_CDTXADDR32(sc, x) \ 212 ((sc)->sc_cddma + SONIC_CDTXOFF32((x))) 213 214 #define SONIC_CDTXADDR(sc, x) \ 215 ((sc)->sc_32bit ? SONIC_CDTXADDR32((sc), (x)) : \ 216 SONIC_CDTXADDR16((sc), (x))) 217 218 #define SONIC_CDRXADDR16(sc, x) \ 219 ((sc)->sc_cddma + SONIC_CDRXOFF16((x))) 220 221 #define SONIC_CDRXADDR32(sc, x) \ 222 ((sc)->sc_cddma + SONIC_CDRXOFF32((x))) 223 224 #define SONIC_CDRXADDR(sc, x) \ 225 ((sc)->sc_32bit ? SONIC_CDRXADDR32((sc), (x)) : \ 226 SONIC_CDRXADDR16((sc), (x))) 227 228 #define SONIC_CDRRADDR(sc, x) \ 229 ((sc)->sc_cddma + \ 230 ((sc)->sc_32bit ? SONIC_CDRROFF32((x)) : SONIC_CDRROFF16((x)))) 231 232 #define SONIC_CDCAMADDR(sc) \ 233 ((sc)->sc_cddma + \ 234 ((sc)->sc_32bit ? SONIC_CDCAMOFF32 : SONIC_CDCAMOFF32)) 235 236 #define SONIC_CDTXSYNC16(sc, x, ops) \ 237 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 238 SONIC_CDTXOFF16((x)), sizeof(struct sonic_tda16), (ops)) 239 240 #define SONIC_CDTXSYNC32(sc, x, ops) \ 241 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 242 SONIC_CDTXOFF32((x)), sizeof(struct sonic_tda32), (ops)) 243 244 #define SONIC_CDRXSYNC16(sc, x, ops) \ 245 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 246 SONIC_CDRXOFF16((x)), sizeof(struct sonic_rda16), (ops)) 247 248 #define SONIC_CDRXSYNC32(sc, x, ops) \ 249 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 250 SONIC_CDRXOFF32((x)), sizeof(struct sonic_rda32), (ops)) 251 252 #define SONIC_CDRRSYNC16(sc, x, ops) \ 253 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 254 SONIC_CDRROFF16((x)), sizeof(struct sonic_rra16), (ops)) 255 256 #define SONIC_CDRRSYNC32(sc, x, ops) \ 257 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 258 SONIC_CDRROFF32((x)), sizeof(struct sonic_rra32), (ops)) 259 260 #define SONIC_CDCAMSYNC(sc, ops) \ 261 do { \ 262 if ((sc)->sc_32bit) \ 263 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 264 SONIC_CDCAMOFF32, sizeof(struct sonic_cda32) * 16, \ 265 (ops)); \ 266 else \ 267 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 268 SONIC_CDCAMOFF16, sizeof(struct sonic_cda16) * 16, \ 269 (ops)); \ 270 } while (/*CONSTCOND*/0) 271 272 #define SONIC_INIT_RXDESC(sc, x) \ 273 do { \ 274 struct sonic_descsoft *__ds = &(sc)->sc_rxsoft[(x)]; \ 275 struct mbuf *__m = __ds->ds_mbuf; \ 276 \ 277 if ((sc)->sc_32bit) { \ 278 /* \ 279 * Unfortuantely, in 32-bit mode, the Rx buffer must \ 280 * be 32-bit aligned. \ 281 */ \ 282 struct sonic_rda32 *__rda = &(sc)->sc_rda32[(x)]; \ 283 struct sonic_rda32 *__prda = \ 284 &(sc)->sc_rda32[SONIC_PREVRX((x))]; \ 285 struct sonic_rra32 *__rra = &(sc)->sc_rra32[(x)]; \ 286 \ 287 __m->m_data = __m->m_ext.ext_buf; \ 288 \ 289 __rra->rra_ptr1 = \ 290 __ds->ds_dmamap->dm_segs[0].ds_addr >> 16; \ 291 __rra->rra_ptr0 = \ 292 __ds->ds_dmamap->dm_segs[0].ds_addr & 0xffff; \ 293 __rra->rra_wc1 = 0; \ 294 __rra->rra_wc0 = (ETHER_MAX_LEN + 6) / 2; \ 295 \ 296 __rda->rda_link = \ 297 (SONIC_CDRXADDR32((sc), SONIC_NEXTRX((x))) & 0xffff) |\ 298 RDA_LINK_EOL; \ 299 __rda->rda_inuse = 1; \ 300 \ 301 __prda->rda_link = SONIC_CDRXADDR32((sc), (x)); \ 302 \ 303 SONIC_CDRRSYNC32((sc), (x), BUS_DMASYNC_PREWRITE); \ 304 SONIC_CDRXSYNC32((sc), (x), \ 305 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 306 SONIC_CDRXSYNC32((sc), SONIC_PREVRX(x), \ 307 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 308 } else { \ 309 /* \ 310 * In 16-bit mode, we scoot the packet forward 2 bytes \ 311 * so that the payload after the Ethernet header is \ 312 * suitably aligned. \ 313 */ \ 314 struct sonic_rda16 *__rda = &(sc)->sc_rda16[(x)]; \ 315 struct sonic_rda16 *__prda = \ 316 &(sc)->sc_rda16[SONIC_PREVRX((x))]; \ 317 struct sonic_rra16 *__rra = &(sc)->sc_rra16[(x)]; \ 318 \ 319 __m->m_data = __m->m_ext.ext_buf + 2; \ 320 \ 321 __rra->rra_ptr1 = \ 322 __ds->ds_dmamap->dm_segs[0].ds_addr >> 16; \ 323 __rra->rra_ptr0 = \ 324 (__ds->ds_dmamap->dm_segs[0].ds_addr + 2) & 0xffff; \ 325 __rra->rra_wc1 = 0; \ 326 __rra->rra_wc0 = (ETHER_MAX_LEN + 2) / 2; \ 327 \ 328 __rda->rda_link = \ 329 (SONIC_CDRXADDR16((sc), SONIC_NEXTRX((x))) & 0xffff) |\ 330 RDA_LINK_EOL; \ 331 __rda->rda_inuse = 1; \ 332 \ 333 __prda->rda_link = SONIC_CDRXADDR16((sc), (x)); \ 334 \ 335 SONIC_CDRRSYNC16((sc), (x), BUS_DMASYNC_PREWRITE); \ 336 SONIC_CDRXSYNC16((sc), (x), \ 337 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 338 SONIC_CDRXSYNC16((sc), SONIC_PREVRX(x), \ 339 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 340 } \ 341 } while (/*CONSTCOND*/0) 342 343 static __inline uint16_t __attribute__((__unused__)) 344 htosonic16(struct sonic_softc *sc, uint16_t val) 345 { 346 347 if (sc->sc_bigendian) 348 return (htobe16(val)); 349 return (htole16(val)); 350 } 351 352 static __inline uint16_t __attribute__((__unused__)) 353 sonic16toh(struct sonic_softc *sc, uint16_t val) 354 { 355 356 if (sc->sc_bigendian) 357 return (be16toh(val)); 358 return (le16toh(val)); 359 } 360 361 static __inline uint32_t __attribute__((__unused__)) 362 htosonic32(struct sonic_softc *sc, uint32_t val) 363 { 364 365 if (sc->sc_bigendian) 366 return (htobe32(val)); 367 return (htole32(val)); 368 } 369 370 static __inline uint32_t __attribute__((__unused__)) 371 sonic32toh(struct sonic_softc *sc, uint32_t val) 372 { 373 374 if (sc->sc_bigendian) 375 return (be32toh(val)); 376 return (le32toh(val)); 377 } 378 379 #ifdef _KERNEL 380 void sonic_attach(struct sonic_softc *, const uint8_t *); 381 int sonic_intr(void *); 382 #endif /* _KERNEL */ 383 384 #endif /* _DEV_IC_DP83932VAR_H_ */
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