1 /* $OpenBSD: if_le_ioasic.c,v 1.6 2001/06/27 04:45:59 art Exp $ */ 2 /* $NetBSD: if_le_ioasic.c,v 1.2 1996/05/07 02:24:56 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1996 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Chris G. Demetriou 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31 /* 32 * LANCE on DEC IOCTL ASIC. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mbuf.h> 38 #include <sys/syslog.h> 39 #include <sys/socket.h> 40 #include <sys/device.h> 41 42 #include <net/if.h> 43 #include <net/if_media.h> 44 45 #include <vm/vm.h> 46 #include <uvm/uvm_extern.h> 47 48 #ifdef INET 49 #include <netinet/in.h> 50 #include <netinet/if_ether.h> 51 #endif 52 53 #include <dev/ic/am7990reg.h> 54 #include <dev/ic/am7990var.h> 55 56 #include <dev/tc/if_levar.h> 57 #include <dev/tc/tcvar.h> 58 #include <dev/tc/ioasicvar.h> 59 60 int le_ioasic_match __P((struct device *, void *, void *)); 61 void le_ioasic_attach __P((struct device *, struct device *, void *)); 62 63 hide void le_ioasic_copytobuf_gap2 __P((struct am7990_softc *, void *, 64 int, int)); 65 hide void le_ioasic_copyfrombuf_gap2 __P((struct am7990_softc *, void *, 66 int, int)); 67 68 hide void le_ioasic_copytobuf_gap16 __P((struct am7990_softc *, void *, 69 int, int)); 70 hide void le_ioasic_copyfrombuf_gap16 __P((struct am7990_softc *, void *, 71 int, int)); 72 hide void le_ioasic_zerobuf_gap16 __P((struct am7990_softc *, int, int)); 73 74 struct cfattach le_ioasic_ca = { 75 sizeof(struct le_softc), le_ioasic_match, le_ioasic_attach 76 }; 77 78 int 79 le_ioasic_match(parent, match, aux) 80 struct device *parent; 81 void *match, *aux; 82 { 83 struct ioasicdev_attach_args *d = aux; 84 85 if (!ioasic_submatch(match, aux)) 86 return (0); 87 if (strncmp("lance", d->iada_modname, TC_ROM_LLEN)) 88 return (0); 89 90 return (1); 91 } 92 93 #define LE_IOASIC_MEMSIZE (128*1024) 94 #define LE_IOASIC_MEMALIGN (128*1024) 95 void 96 le_ioasic_attach(parent, self, aux) 97 struct device *parent, *self; 98 void *aux; 99 { 100 struct ioasicdev_attach_args *d = aux; 101 register struct le_softc *lesc = (void *)self; 102 register struct am7990_softc *sc = &lesc->sc_am7990; 103 caddr_t le_iomem; 104 105 le_iomem = (caddr_t)uvm_pagealloc_contig(LE_IOASIC_MEMSIZE, 0, 0, LE_IOASIC_MEMALIGN); 106 107 lesc->sc_r1 = (struct lereg1 *) 108 TC_DENSE_TO_SPARSE(TC_PHYS_TO_UNCACHED(d->iada_addr)); 109 sc->sc_mem = (void *)TC_PHYS_TO_UNCACHED(le_iomem); 110 111 sc->sc_copytodesc = le_ioasic_copytobuf_gap2; 112 sc->sc_copyfromdesc = le_ioasic_copyfrombuf_gap2; 113 sc->sc_copytobuf = le_ioasic_copytobuf_gap16; 114 sc->sc_copyfrombuf = le_ioasic_copyfrombuf_gap16; 115 sc->sc_zerobuf = le_ioasic_zerobuf_gap16; 116 117 ioasic_lance_dma_setup(le_iomem); /* XXX more thought */ 118 119 dec_le_common_attach(sc, ioasic_lance_ether_address()); 120 121 ioasic_intr_establish(parent, d->iada_cookie, TC_IPL_NET, 122 am7990_intr, sc); 123 } 124 125 /* 126 * Special memory access functions needed by ioasic-attached LANCE 127 * chips. 128 */ 129 130 /* 131 * gap2: two bytes of data followed by two bytes of pad. 132 * 133 * Buffers must be 4-byte aligned. The code doesn't worry about 134 * doing an extra byte. 135 */ 136 137 void 138 le_ioasic_copytobuf_gap2(sc, fromv, boff, len) 139 struct am7990_softc *sc; 140 void *fromv; 141 int boff; 142 register int len; 143 { 144 volatile caddr_t buf = sc->sc_mem; 145 register caddr_t from = fromv; 146 register volatile u_int16_t *bptr; 147 148 if (boff & 0x1) { 149 /* handle unaligned first byte */ 150 bptr = ((volatile u_int16_t *)buf) + (boff - 1); 151 *bptr = (*from++ << 8) | (*bptr & 0xff); 152 bptr += 2; 153 len--; 154 } else 155 bptr = ((volatile u_int16_t *)buf) + boff; 156 while (len > 1) { 157 *bptr = (from[1] << 8) | (from[0] & 0xff); 158 bptr += 2; 159 from += 2; 160 len -= 2; 161 } 162 if (len == 1) 163 *bptr = (u_int16_t)*from; 164 } 165 166 void 167 le_ioasic_copyfrombuf_gap2(sc, tov, boff, len) 168 struct am7990_softc *sc; 169 void *tov; 170 int boff, len; 171 { 172 volatile caddr_t buf = sc->sc_mem; 173 register caddr_t to = tov; 174 register volatile u_int16_t *bptr; 175 register u_int16_t tmp; 176 177 if (boff & 0x1) { 178 /* handle unaligned first byte */ 179 bptr = ((volatile u_int16_t *)buf) + (boff - 1); 180 *to++ = (*bptr >> 8) & 0xff; 181 bptr += 2; 182 len--; 183 } else 184 bptr = ((volatile u_int16_t *)buf) + boff; 185 while (len > 1) { 186 tmp = *bptr; 187 *to++ = tmp & 0xff; 188 *to++ = (tmp >> 8) & 0xff; 189 bptr += 2; 190 len -= 2; 191 } 192 if (len == 1) 193 *to = *bptr & 0xff; 194 } 195 196 /* 197 * gap16: 16 bytes of data followed by 16 bytes of pad. 198 * 199 * Buffers must be 32-byte aligned. 200 */ 201 202 void 203 le_ioasic_copytobuf_gap16(sc, fromv, boff, len) 204 struct am7990_softc *sc; 205 void *fromv; 206 int boff; 207 register int len; 208 { 209 volatile caddr_t buf = sc->sc_mem; 210 register caddr_t from = fromv; 211 register caddr_t bptr; 212 register int xfer; 213 214 bptr = buf + ((boff << 1) & ~0x1f); 215 boff &= 0xf; 216 xfer = min(len, 16 - boff); 217 while (len > 0) { 218 bcopy(from, bptr + boff, xfer); 219 from += xfer; 220 bptr += 32; 221 boff = 0; 222 len -= xfer; 223 xfer = min(len, 16); 224 } 225 } 226 227 void 228 le_ioasic_copyfrombuf_gap16(sc, tov, boff, len) 229 struct am7990_softc *sc; 230 void *tov; 231 int boff, len; 232 { 233 volatile caddr_t buf = sc->sc_mem; 234 register caddr_t to = tov; 235 register caddr_t bptr; 236 register int xfer; 237 238 bptr = buf + ((boff << 1) & ~0x1f); 239 boff &= 0xf; 240 xfer = min(len, 16 - boff); 241 while (len > 0) { 242 bcopy(bptr + boff, to, xfer); 243 to += xfer; 244 bptr += 32; 245 boff = 0; 246 len -= xfer; 247 xfer = min(len, 16); 248 } 249 } 250 251 void 252 le_ioasic_zerobuf_gap16(sc, boff, len) 253 struct am7990_softc *sc; 254 int boff, len; 255 { 256 volatile caddr_t buf = sc->sc_mem; 257 register caddr_t bptr; 258 register int xfer; 259 260 bptr = buf + ((boff << 1) & ~0x1f); 261 boff &= 0xf; 262 xfer = min(len, 16 - boff); 263 while (len > 0) { 264 bzero(bptr + boff, xfer); 265 bptr += 32; 266 boff = 0; 267 len -= xfer; 268 xfer = min(len, 16); 269 } 270 } 271