if_ie_mvme.c revision 1.14
1 /* $NetBSD: if_ie_mvme.c,v 1.14 2009/03/14 15:36:19 dsl 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 1.14 2009/03/14 15:36:19 dsl 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(struct ie_softc *sc, int why) 97 { 98 struct ie_pcctwo_softc *ps; 99 u_int32_t scp_addr; 100 101 ps = (struct ie_pcctwo_softc *) sc; 102 103 switch (why) { 104 case CHIP_PROBE: 105 case CARD_RESET: 106 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER, 107 IE_PORT_RESET); 108 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 0); 109 delay(1000); 110 111 /* 112 * Set the BUSY and BUS_USE bytes here, since the MI code 113 * incorrectly assumes it can use byte addressing to set it. 114 * (due to wrong-endianess of the chip) 115 */ 116 ie_write_16(sc, IE_ISCP_BUSY(sc->iscp), 1); 117 ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE); 118 119 scp_addr = sc->scp + (u_int) sc->sc_iobase; 120 scp_addr |= IE_PORT_ALT_SCP; 121 122 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER, 123 scp_addr & 0xffff); 124 bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 125 (scp_addr >> 16) & 0xffff); 126 delay(1000); 127 break; 128 } 129 } 130 131 /* ARGSUSED */ 132 static int 133 ie_intrhook(struct ie_softc *sc, int when) 134 { 135 struct ie_pcctwo_softc *ps; 136 u_int8_t reg; 137 138 ps = (struct ie_pcctwo_softc *) sc; 139 140 if (when == INTR_EXIT) { 141 reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR); 142 reg |= PCCTWO_ICR_ICLR; 143 pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg); 144 } 145 return (0); 146 } 147 148 /* ARGSUSED */ 149 static void 150 ie_hwinit(struct ie_softc *sc) 151 { 152 u_int8_t reg; 153 154 reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR); 155 reg |= PCCTWO_ICR_IEN | PCCTWO_ICR_ICLR; 156 pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg); 157 } 158 159 /* ARGSUSED */ 160 static void 161 ie_atten(struct ie_softc *sc, int reason) 162 { 163 struct ie_pcctwo_softc *ps; 164 165 ps = (struct ie_pcctwo_softc *) sc; 166 bus_space_write_4(ps->ps_bust, ps->ps_bush, IE_MPUREG_CA, 0); 167 } 168 169 static void 170 ie_copyin(struct ie_softc *sc, void *dst, int offset, size_t size) 171 { 172 if (size == 0) /* This *can* happen! */ 173 return; 174 175 #if 0 176 bus_space_read_region_1(sc->bt, sc->bh, offset, dst, size); 177 #else 178 /* A minor optimisation ;-) */ 179 memcpy(dst, (void *) ((u_long) sc->bh + (u_long) offset), size); 180 #endif 181 } 182 183 static void 184 ie_copyout(struct ie_softc *sc, const void *src, int offset, size_t size) 185 { 186 if (size == 0) /* This *can* happen! */ 187 return; 188 189 #if 0 190 bus_space_write_region_1(sc->bt, sc->bh, offset, src, size); 191 #else 192 /* A minor optimisation ;-) */ 193 memcpy((void *) ((u_long) sc->bh + (u_long) offset), src, size); 194 #endif 195 } 196 197 static u_int16_t 198 ie_read_16(struct ie_softc *sc, int offset) 199 { 200 201 return (bus_space_read_2(sc->bt, sc->bh, offset)); 202 } 203 204 static void 205 ie_write_16(struct ie_softc *sc, int offset, u_int16_t value) 206 { 207 208 bus_space_write_2(sc->bt, sc->bh, offset, value); 209 } 210 211 static void 212 ie_write_24(struct ie_softc *sc, int offset, int addr) 213 { 214 215 addr += (int) sc->sc_iobase; 216 217 bus_space_write_2(sc->bt, sc->bh, offset, addr & 0xffff); 218 bus_space_write_2(sc->bt, sc->bh, offset + 2, (addr >> 16) & 0x00ff); 219 } 220 221 /* ARGSUSED */ 222 int 223 ie_pcctwo_match(struct device *parent, struct cfdata *cf, void *args) 224 { 225 struct pcctwo_attach_args *pa; 226 227 pa = args; 228 229 if (strcmp(pa->pa_name, ie_cd.cd_name)) 230 return (0); 231 232 pa->pa_ipl = cf->pcctwocf_ipl; 233 234 return (1); 235 } 236 237 /* ARGSUSED */ 238 void 239 ie_pcctwo_attach(struct device *parent, struct device *self, void *args) 240 { 241 struct pcctwo_attach_args *pa; 242 struct ie_pcctwo_softc *ps; 243 struct ie_softc *sc; 244 bus_dma_segment_t seg; 245 int rseg; 246 247 pa = (struct pcctwo_attach_args *) args; 248 ps = device_private(self); 249 sc = device_private(self); 250 251 /* Map the MPU controller registers in PCCTWO space */ 252 ps->ps_bust = pa->pa_bust; 253 bus_space_map(pa->pa_bust, pa->pa_offset, IE_MPUREG_SIZE, 254 0, &ps->ps_bush); 255 256 /* Get contiguous DMA-able memory for the IE chip */ 257 if (bus_dmamem_alloc(pa->pa_dmat, ether_data_buff_size, PAGE_SIZE, 0, 258 &seg, 1, &rseg, 259 BUS_DMA_NOWAIT | BUS_DMA_ONBOARD_RAM | BUS_DMA_24BIT) != 0) { 260 aprint_error_dev(self, "Failed to allocate ether buffer\n"); 261 return; 262 } 263 if (bus_dmamem_map(pa->pa_dmat, &seg, rseg, ether_data_buff_size, 264 (void **) & sc->sc_maddr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) { 265 aprint_error_dev(self, "Failed to map ether buffer\n"); 266 bus_dmamem_free(pa->pa_dmat, &seg, rseg); 267 return; 268 } 269 sc->bt = pa->pa_bust; 270 sc->bh = (bus_space_handle_t) sc->sc_maddr; /* XXXSCW Better way? */ 271 sc->sc_iobase = (void *) seg.ds_addr; 272 sc->sc_msize = ether_data_buff_size; 273 memset(sc->sc_maddr, 0, ether_data_buff_size); 274 275 sc->hwreset = ie_reset; 276 sc->hwinit = ie_hwinit; 277 sc->chan_attn = ie_atten; 278 sc->intrhook = ie_intrhook; 279 sc->memcopyin = ie_copyin; 280 sc->memcopyout = ie_copyout; 281 sc->ie_bus_barrier = NULL; 282 sc->ie_bus_read16 = ie_read_16; 283 sc->ie_bus_write16 = ie_write_16; 284 sc->ie_bus_write24 = ie_write_24; 285 sc->sc_mediachange = NULL; 286 sc->sc_mediastatus = NULL; 287 288 sc->scp = 0; 289 sc->iscp = sc->scp + ((IE_SCP_SZ + 15) & ~15); 290 sc->scb = sc->iscp + IE_ISCP_SZ; 291 sc->buf_area = sc->scb + IE_SCB_SZ; 292 sc->buf_area_sz = sc->sc_msize - (sc->buf_area - sc->scp); 293 294 /* 295 * BUS_USE -> Interrupt Active High (edge-triggered), 296 * Lock function enabled, 297 * Internal bus throttle timer triggering, 298 * 82586 operating mode. 299 */ 300 ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE); 301 ie_write_24(sc, IE_SCP_ISCP(sc->scp), sc->iscp); 302 ie_write_16(sc, IE_ISCP_SCB(sc->iscp), sc->scb); 303 ie_write_24(sc, IE_ISCP_BASE(sc->iscp), sc->scp); 304 305 /* This has the side-effect of resetting the chip */ 306 i82586_proberam(sc); 307 308 /* Attach the MI back-end */ 309 i82586_attach(sc, "onboard", mvme_ea, NULL, 0, 0); 310 311 /* Register the event counter */ 312 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_INTR, 313 pcctwointr_evcnt(pa->pa_ipl), "ether", device_xname(&sc->sc_dev)); 314 315 /* Finally, hook the hardware interrupt */ 316 pcctwointr_establish(PCCTWOV_LANC_IRQ, i82586_intr, pa->pa_ipl, sc, 317 &ps->ps_evcnt); 318 } 319
Indexes created Fri Sep 26 08:10:20 GMT 2025