if_ie_mvme.c revision 1.12.2.1
1 /* $NetBSD: if_ie_mvme.c,v 1.12.2.1 2008/05/18 12:34:13 yamt 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 * 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 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_ie_mvme.c,v 1.12.2.1 2008/05/18 12:34:13 yamt Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mbuf.h> 38 #include <sys/errno.h> 39 #include <sys/device.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 43 #include <net/if.h> 44 #include <net/if_dl.h> 45 #include <net/if_types.h> 46 #include <net/if_ether.h> 47 #include <net/if_media.h> 48 49 #include <uvm/uvm_extern.h> 50 51 #include <machine/autoconf.h> 52 #include <sys/cpu.h> 53 #include <sys/bus.h> 54 55 #include <dev/ic/i82586reg.h> 56 #include <dev/ic/i82586var.h> 57 58 #include <dev/mvme/if_iereg.h> 59 #include <dev/mvme/pcctwovar.h> 60 #include <dev/mvme/pcctworeg.h> 61 62 63 int ie_pcctwo_match(struct device *, struct cfdata *, void *); 64 void ie_pcctwo_attach(struct device *, struct device *, void *); 65 66 struct ie_pcctwo_softc { 67 struct ie_softc ps_ie; 68 bus_space_tag_t ps_bust; 69 bus_space_handle_t ps_bush; 70 struct evcnt ps_evcnt; 71 }; 72 73 CFATTACH_DECL(ie_pcctwo, sizeof(struct ie_pcctwo_softc), 74 ie_pcctwo_match, ie_pcctwo_attach, NULL, NULL); 75 76 extern struct cfdriver ie_cd; 77 78 79 /* Functions required by the i82586 MI driver */ 80 static void ie_reset(struct ie_softc *, int); 81 static int ie_intrhook(struct ie_softc *, int); 82 static void ie_hwinit(struct ie_softc *); 83 static void ie_atten(struct ie_softc *, int); 84 85 static void ie_copyin(struct ie_softc *, void *, int, size_t); 86 static void ie_copyout(struct ie_softc *, const void *, int, size_t); 87 88 static u_int16_t ie_read_16(struct ie_softc *, int); 89 static void ie_write_16(struct ie_softc *, int, u_int16_t); 90 static void ie_write_24(struct ie_softc *, int, int); 91 92 /* 93 * i82596 Support Routines for MVME1[67][27] and MVME187 Boards 94 */ 95 static void 96 ie_reset(sc, why) 97 struct ie_softc *sc; 98 int why; 99 { 100 struct ie_pcctwo_softc *ps; 101 u_int32_t scp_addr; 102 103 ps = (struct ie_pcctwo_softc *) sc; 104 105 switch (why) { 106 case CHIP_PROBE: 107 case CARD_RESET: 108 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER, 109 IE_PORT_RESET); 110 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 0); 111 delay(1000); 112 113 /* 114 * Set the BUSY and BUS_USE bytes here, since the MI code 115 * incorrectly assumes it can use byte addressing to set it. 116 * (due to wrong-endianess of the chip) 117 */ 118 ie_write_16(sc, IE_ISCP_BUSY(sc->iscp), 1); 119 ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE); 120 121 scp_addr = sc->scp + (u_int) sc->sc_iobase; 122 scp_addr |= IE_PORT_ALT_SCP; 123 124 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER, 125 scp_addr & 0xffff); 126 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 127 (scp_addr >> 16) & 0xffff); 128 delay(1000); 129 break; 130 } 131 } 132 133 /* ARGSUSED */ 134 static int 135 ie_intrhook(sc, when) 136 struct ie_softc *sc; 137 int when; 138 { 139 struct ie_pcctwo_softc *ps; 140 u_int8_t reg; 141 142 ps = (struct ie_pcctwo_softc *) sc; 143 144 if (when == INTR_EXIT) { 145 reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR); 146 reg |= PCCTWO_ICR_ICLR; 147 pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg); 148 } 149 return (0); 150 } 151 152 /* ARGSUSED */ 153 static void 154 ie_hwinit(sc) 155 struct ie_softc *sc; 156 { 157 u_int8_t reg; 158 159 reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR); 160 reg |= PCCTWO_ICR_IEN | PCCTWO_ICR_ICLR; 161 pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg); 162 } 163 164 /* ARGSUSED */ 165 static void 166 ie_atten(sc, reason) 167 struct ie_softc *sc; 168 int reason; 169 { 170 struct ie_pcctwo_softc *ps; 171 172 ps = (struct ie_pcctwo_softc *) sc; 173 bus_space_write_4(ps->ps_bust, ps->ps_bush, IE_MPUREG_CA, 0); 174 } 175 176 static void 177 ie_copyin(sc, dst, offset, size) 178 struct ie_softc *sc; 179 void *dst; 180 int offset; 181 size_t size; 182 { 183 if (size == 0) /* This *can* happen! */ 184 return; 185 186 #if 0 187 bus_space_read_region_1(sc->bt, sc->bh, offset, dst, size); 188 #else 189 /* A minor optimisation ;-) */ 190 memcpy(dst, (void *) ((u_long) sc->bh + (u_long) offset), size); 191 #endif 192 } 193 194 static void 195 ie_copyout(sc, src, offset, size) 196 struct ie_softc *sc; 197 const void *src; 198 int offset; 199 size_t size; 200 { 201 if (size == 0) /* This *can* happen! */ 202 return; 203 204 #if 0 205 bus_space_write_region_1(sc->bt, sc->bh, offset, src, size); 206 #else 207 /* A minor optimisation ;-) */ 208 memcpy((void *) ((u_long) sc->bh + (u_long) offset), src, size); 209 #endif 210 } 211 212 static u_int16_t 213 ie_read_16(sc, offset) 214 struct ie_softc *sc; 215 int offset; 216 { 217 218 return (bus_space_read_2(sc->bt, sc->bh, offset)); 219 } 220 221 static void 222 ie_write_16(sc, offset, value) 223 struct ie_softc *sc; 224 int offset; 225 u_int16_t value; 226 { 227 228 bus_space_write_2(sc->bt, sc->bh, offset, value); 229 } 230 231 static void 232 ie_write_24(sc, offset, addr) 233 struct ie_softc *sc; 234 int offset; 235 int addr; 236 { 237 238 addr += (int) sc->sc_iobase; 239 240 bus_space_write_2(sc->bt, sc->bh, offset, addr & 0xffff); 241 bus_space_write_2(sc->bt, sc->bh, offset + 2, (addr >> 16) & 0x00ff); 242 } 243 244 /* ARGSUSED */ 245 int 246 ie_pcctwo_match(parent, cf, args) 247 struct device *parent; 248 struct cfdata *cf; 249 void *args; 250 { 251 struct pcctwo_attach_args *pa; 252 253 pa = args; 254 255 if (strcmp(pa->pa_name, ie_cd.cd_name)) 256 return (0); 257 258 pa->pa_ipl = cf->pcctwocf_ipl; 259 260 return (1); 261 } 262 263 /* ARGSUSED */ 264 void 265 ie_pcctwo_attach(parent, self, args) 266 struct device *parent; 267 struct device *self; 268 void *args; 269 { 270 struct pcctwo_attach_args *pa; 271 struct ie_pcctwo_softc *ps; 272 struct ie_softc *sc; 273 bus_dma_segment_t seg; 274 int rseg; 275 276 pa = (struct pcctwo_attach_args *) args; 277 ps = device_private(self); 278 sc = device_private(self); 279 280 /* Map the MPU controller registers in PCCTWO space */ 281 ps->ps_bust = pa->pa_bust; 282 bus_space_map(pa->pa_bust, pa->pa_offset, IE_MPUREG_SIZE, 283 0, &ps->ps_bush); 284 285 /* Get contiguous DMA-able memory for the IE chip */ 286 if (bus_dmamem_alloc(pa->pa_dmat, ether_data_buff_size, PAGE_SIZE, 0, 287 &seg, 1, &rseg, 288 BUS_DMA_NOWAIT | BUS_DMA_ONBOARD_RAM | BUS_DMA_24BIT) != 0) { 289 aprint_error_dev(self, "Failed to allocate ether buffer\n"); 290 return; 291 } 292 if (bus_dmamem_map(pa->pa_dmat, &seg, rseg, ether_data_buff_size, 293 (void **) & sc->sc_maddr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) { 294 aprint_error_dev(self, "Failed to map ether buffer\n"); 295 bus_dmamem_free(pa->pa_dmat, &seg, rseg); 296 return; 297 } 298 sc->bt = pa->pa_bust; 299 sc->bh = (bus_space_handle_t) sc->sc_maddr; /* XXXSCW Better way? */ 300 sc->sc_iobase = (void *) seg.ds_addr; 301 sc->sc_msize = ether_data_buff_size; 302 memset(sc->sc_maddr, 0, ether_data_buff_size); 303 304 sc->hwreset = ie_reset; 305 sc->hwinit = ie_hwinit; 306 sc->chan_attn = ie_atten; 307 sc->intrhook = ie_intrhook; 308 sc->memcopyin = ie_copyin; 309 sc->memcopyout = ie_copyout; 310 sc->ie_bus_barrier = NULL; 311 sc->ie_bus_read16 = ie_read_16; 312 sc->ie_bus_write16 = ie_write_16; 313 sc->ie_bus_write24 = ie_write_24; 314 sc->sc_mediachange = NULL; 315 sc->sc_mediastatus = NULL; 316 317 sc->scp = 0; 318 sc->iscp = sc->scp + ((IE_SCP_SZ + 15) & ~15); 319 sc->scb = sc->iscp + IE_ISCP_SZ; 320 sc->buf_area = sc->scb + IE_SCB_SZ; 321 sc->buf_area_sz = sc->sc_msize - (sc->buf_area - sc->scp); 322 323 /* 324 * BUS_USE -> Interrupt Active High (edge-triggered), 325 * Lock function enabled, 326 * Internal bus throttle timer triggering, 327 * 82586 operating mode. 328 */ 329 ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE); 330 ie_write_24(sc, IE_SCP_ISCP(sc->scp), sc->iscp); 331 ie_write_16(sc, IE_ISCP_SCB(sc->iscp), sc->scb); 332 ie_write_24(sc, IE_ISCP_BASE(sc->iscp), sc->scp); 333 334 /* This has the side-effect of resetting the chip */ 335 i82586_proberam(sc); 336 337 /* Attach the MI back-end */ 338 i82586_attach(sc, "onboard", mvme_ea, NULL, 0, 0); 339 340 /* Register the event counter */ 341 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_INTR, 342 pcctwointr_evcnt(pa->pa_ipl), "ether", device_xname(&sc->sc_dev)); 343 344 /* Finally, hook the hardware interrupt */ 345 pcctwointr_establish(PCCTWOV_LANC_IRQ, i82586_intr, pa->pa_ipl, sc, 346 &ps->ps_evcnt); 347 } 348
Indexes created Mon Oct 27 04:09:48 GMT 2025