1 /* $NetBSD: if_ie_mvme.c,v 1.8 2005/12/11 12:22:48 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 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 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: if_ie_mvme.c,v 1.8 2005/12/11 12:22:48 christos Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mbuf.h> 45 #include <sys/errno.h> 46 #include <sys/device.h> 47 #include <sys/protosw.h> 48 #include <sys/socket.h> 49 50 #include <net/if.h> 51 #include <net/if_dl.h> 52 #include <net/if_types.h> 53 #include <net/if_ether.h> 54 #include <net/if_media.h> 55 56 #include <uvm/uvm_extern.h> 57 58 #include <machine/autoconf.h> 59 #include <machine/cpu.h> 60 #include <machine/bus.h> 61 62 #include <dev/ic/i82586reg.h> 63 #include <dev/ic/i82586var.h> 64 65 #include <dev/mvme/if_iereg.h> 66 #include <dev/mvme/pcctwovar.h> 67 #include <dev/mvme/pcctworeg.h> 68 69 70 int ie_pcctwo_match(struct device *, struct cfdata *, void *); 71 void ie_pcctwo_attach(struct device *, struct device *, void *); 72 73 struct ie_pcctwo_softc { 74 struct ie_softc ps_ie; 75 bus_space_tag_t ps_bust; 76 bus_space_handle_t ps_bush; 77 struct evcnt ps_evcnt; 78 }; 79 80 CFATTACH_DECL(ie_pcctwo, sizeof(struct ie_pcctwo_softc), 81 ie_pcctwo_match, ie_pcctwo_attach, NULL, NULL); 82 83 extern struct cfdriver ie_cd; 84 85 86 /* Functions required by the i82586 MI driver */ 87 static void ie_reset(struct ie_softc *, int); 88 static int ie_intrhook(struct ie_softc *, int); 89 static void ie_hwinit(struct ie_softc *); 90 static void ie_atten(struct ie_softc *, int); 91 92 static void ie_copyin(struct ie_softc *, void *, int, size_t); 93 static void ie_copyout(struct ie_softc *, const void *, int, size_t); 94 95 static u_int16_t ie_read_16(struct ie_softc *, int); 96 static void ie_write_16(struct ie_softc *, int, u_int16_t); 97 static void ie_write_24(struct ie_softc *, int, int); 98 99 /* 100 * i82596 Support Routines for MVME1[67][27] and MVME187 Boards 101 */ 102 static void 103 ie_reset(sc, why) 104 struct ie_softc *sc; 105 int why; 106 { 107 struct ie_pcctwo_softc *ps; 108 u_int32_t scp_addr; 109 110 ps = (struct ie_pcctwo_softc *) sc; 111 112 switch (why) { 113 case CHIP_PROBE: 114 case CARD_RESET: 115 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER, 116 IE_PORT_RESET); 117 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 0); 118 delay(1000); 119 120 /* 121 * Set the BUSY and BUS_USE bytes here, since the MI code 122 * incorrectly assumes it can use byte addressing to set it. 123 * (due to wrong-endianess of the chip) 124 */ 125 ie_write_16(sc, IE_ISCP_BUSY(sc->iscp), 1); 126 ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE); 127 128 scp_addr = sc->scp + (u_int) sc->sc_iobase; 129 scp_addr |= IE_PORT_ALT_SCP; 130 131 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER, 132 scp_addr & 0xffff); 133 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 134 (scp_addr >> 16) & 0xffff); 135 delay(1000); 136 break; 137 } 138 } 139 140 /* ARGSUSED */ 141 static int 142 ie_intrhook(sc, when) 143 struct ie_softc *sc; 144 int when; 145 { 146 struct ie_pcctwo_softc *ps; 147 u_int8_t reg; 148 149 ps = (struct ie_pcctwo_softc *) sc; 150 151 if (when == INTR_EXIT) { 152 reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR); 153 reg |= PCCTWO_ICR_ICLR; 154 pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg); 155 } 156 return (0); 157 } 158 159 /* ARGSUSED */ 160 static void 161 ie_hwinit(sc) 162 struct ie_softc *sc; 163 { 164 u_int8_t reg; 165 166 reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR); 167 reg |= PCCTWO_ICR_IEN | PCCTWO_ICR_ICLR; 168 pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg); 169 } 170 171 /* ARGSUSED */ 172 static void 173 ie_atten(sc, reason) 174 struct ie_softc *sc; 175 int reason; 176 { 177 struct ie_pcctwo_softc *ps; 178 179 ps = (struct ie_pcctwo_softc *) sc; 180 bus_space_write_4(ps->ps_bust, ps->ps_bush, IE_MPUREG_CA, 0); 181 } 182 183 static void 184 ie_copyin(sc, dst, offset, size) 185 struct ie_softc *sc; 186 void *dst; 187 int offset; 188 size_t size; 189 { 190 if (size == 0) /* This *can* happen! */ 191 return; 192 193 #if 0 194 bus_space_read_region_1(sc->bt, sc->bh, offset, dst, size); 195 #else 196 /* A minor optimisation ;-) */ 197 memcpy(dst, (void *) ((u_long) sc->bh + (u_long) offset), size); 198 #endif 199 } 200 201 static void 202 ie_copyout(sc, src, offset, size) 203 struct ie_softc *sc; 204 const void *src; 205 int offset; 206 size_t size; 207 { 208 if (size == 0) /* This *can* happen! */ 209 return; 210 211 #if 0 212 bus_space_write_region_1(sc->bt, sc->bh, offset, src, size); 213 #else 214 /* A minor optimisation ;-) */ 215 memcpy((void *) ((u_long) sc->bh + (u_long) offset), src, size); 216 #endif 217 } 218 219 static u_int16_t 220 ie_read_16(sc, offset) 221 struct ie_softc *sc; 222 int offset; 223 { 224 225 return (bus_space_read_2(sc->bt, sc->bh, offset)); 226 } 227 228 static void 229 ie_write_16(sc, offset, value) 230 struct ie_softc *sc; 231 int offset; 232 u_int16_t value; 233 { 234 235 bus_space_write_2(sc->bt, sc->bh, offset, value); 236 } 237 238 static void 239 ie_write_24(sc, offset, addr) 240 struct ie_softc *sc; 241 int offset; 242 int addr; 243 { 244 245 addr += (int) sc->sc_iobase; 246 247 bus_space_write_2(sc->bt, sc->bh, offset, addr & 0xffff); 248 bus_space_write_2(sc->bt, sc->bh, offset + 2, (addr >> 16) & 0x00ff); 249 } 250 251 /* ARGSUSED */ 252 int 253 ie_pcctwo_match(parent, cf, args) 254 struct device *parent; 255 struct cfdata *cf; 256 void *args; 257 { 258 struct pcctwo_attach_args *pa; 259 260 pa = args; 261 262 if (strcmp(pa->pa_name, ie_cd.cd_name)) 263 return (0); 264 265 pa->pa_ipl = cf->pcctwocf_ipl; 266 267 return (1); 268 } 269 270 /* ARGSUSED */ 271 void 272 ie_pcctwo_attach(parent, self, args) 273 struct device *parent; 274 struct device *self; 275 void *args; 276 { 277 struct pcctwo_attach_args *pa; 278 struct ie_pcctwo_softc *ps; 279 struct ie_softc *sc; 280 bus_dma_segment_t seg; 281 int rseg; 282 283 pa = (struct pcctwo_attach_args *) args; 284 ps = (struct ie_pcctwo_softc *) self; 285 sc = (struct ie_softc *) self; 286 287 /* Map the MPU controller registers in PCCTWO space */ 288 ps->ps_bust = pa->pa_bust; 289 bus_space_map(pa->pa_bust, pa->pa_offset, IE_MPUREG_SIZE, 290 0, &ps->ps_bush); 291 292 /* Get contiguous DMA-able memory for the IE chip */ 293 if (bus_dmamem_alloc(pa->pa_dmat, ether_data_buff_size, PAGE_SIZE, 0, 294 &seg, 1, &rseg, 295 BUS_DMA_NOWAIT | BUS_DMA_ONBOARD_RAM | BUS_DMA_24BIT) != 0) { 296 printf("%s: Failed to allocate ether buffer\n", self->dv_xname); 297 return; 298 } 299 if (bus_dmamem_map(pa->pa_dmat, &seg, rseg, ether_data_buff_size, 300 (caddr_t *) & sc->sc_maddr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) { 301 printf("%s: Failed to map ether buffer\n", self->dv_xname); 302 bus_dmamem_free(pa->pa_dmat, &seg, rseg); 303 return; 304 } 305 sc->bt = pa->pa_bust; 306 sc->bh = (bus_space_handle_t) sc->sc_maddr; /* XXXSCW Better way? */ 307 sc->sc_iobase = (void *) seg.ds_addr; 308 sc->sc_msize = ether_data_buff_size; 309 memset(sc->sc_maddr, 0, ether_data_buff_size); 310 311 sc->hwreset = ie_reset; 312 sc->hwinit = ie_hwinit; 313 sc->chan_attn = ie_atten; 314 sc->intrhook = ie_intrhook; 315 sc->memcopyin = ie_copyin; 316 sc->memcopyout = ie_copyout; 317 sc->ie_bus_barrier = NULL; 318 sc->ie_bus_read16 = ie_read_16; 319 sc->ie_bus_write16 = ie_write_16; 320 sc->ie_bus_write24 = ie_write_24; 321 sc->sc_mediachange = NULL; 322 sc->sc_mediastatus = NULL; 323 324 sc->scp = 0; 325 sc->iscp = sc->scp + ((IE_SCP_SZ + 15) & ~15); 326 sc->scb = sc->iscp + IE_ISCP_SZ; 327 sc->buf_area = sc->scb + IE_SCB_SZ; 328 sc->buf_area_sz = sc->sc_msize - (sc->buf_area - sc->scp); 329 330 /* 331 * BUS_USE -> Interrupt Active High (edge-triggered), 332 * Lock function enabled, 333 * Internal bus throttle timer triggering, 334 * 82586 operating mode. 335 */ 336 ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE); 337 ie_write_24(sc, IE_SCP_ISCP(sc->scp), sc->iscp); 338 ie_write_16(sc, IE_ISCP_SCB(sc->iscp), sc->scb); 339 ie_write_24(sc, IE_ISCP_BASE(sc->iscp), sc->scp); 340 341 /* This has the side-effect of resetting the chip */ 342 i82586_proberam(sc); 343 344 /* Attach the MI back-end */ 345 i82586_attach(sc, "onboard", mvme_ea, NULL, 0, 0); 346 347 /* Register the event counter */ 348 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_INTR, 349 pcctwointr_evcnt(pa->pa_ipl), "ether", sc->sc_dev.dv_xname); 350 351 /* Finally, hook the hardware interrupt */ 352 pcctwointr_establish(PCCTWOV_LANC_IRQ, i82586_intr, pa->pa_ipl, sc, 353 &ps->ps_evcnt); 354 } 355