Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/mvme/vme_two.c
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1 /* $NetBSD: vme_two.c,v 1.9 2021/12/05 07:21:59 msaitoh 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 /* 33 * VME support specific to the VMEchip2 found on all high-end MVME boards 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: vme_two.c,v 1.9 2021/12/05 07:21:59 msaitoh Exp $"); 38 39 #include "vmetwo.h" 40 41 #include <sys/param.h> 42 #include <sys/kernel.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 46 #include <sys/cpu.h> 47 #include <sys/bus.h> 48 49 #include <dev/vme/vmereg.h> 50 #include <dev/vme/vmevar.h> 51 52 #include <dev/mvme/mvmebus.h> 53 #include <dev/mvme/vme_tworeg.h> 54 #include <dev/mvme/vme_twovar.h> 55 56 void vmetwo_master_range(struct vmetwo_softc *, int, struct mvmebus_range *); 57 void vmetwo_slave_range(struct vmetwo_softc *, int, vme_am_t, 58 struct mvmebus_range *); 59 60 /* ARGSUSED */ 61 void 62 vmetwo_init(struct vmetwo_softc *sc) 63 { 64 u_int32_t reg; 65 int i; 66 67 /* Initialise stuff for the common mvmebus front-end */ 68 sc->sc_mvmebus.sc_chip = sc; 69 sc->sc_mvmebus.sc_nmasters = VME2_NMASTERS; 70 sc->sc_mvmebus.sc_masters = &sc->sc_master[0]; 71 sc->sc_mvmebus.sc_nslaves = VME2_NSLAVES; 72 sc->sc_mvmebus.sc_slaves = &sc->sc_slave[0]; 73 sc->sc_mvmebus.sc_intr_establish = vmetwo_intr_establish; 74 sc->sc_mvmebus.sc_intr_disestablish = vmetwo_intr_disestablish; 75 76 /* Initialise interrupts */ 77 vmetwo_intr_init(sc); 78 79 reg = vme2_lcsr_read(sc, VME2LCSR_BOARD_CONTROL); 80 printf(": Type 2 VMEchip, scon jumper %s\n", 81 (reg & VME2_BOARD_CONTROL_SCON) ? "enabled" : "disabled"); 82 83 /* 84 * Figure out what bits of the VMEbus we can access. 85 * First record the `fixed' maps (if they're enabled) 86 */ 87 reg = vme2_lcsr_read(sc, VME2LCSR_IO_CONTROL); 88 if (reg & VME2_IO_CONTROL_I1EN) { 89 /* This range is fixed to A16, DATA */ 90 sc->sc_master[0].vr_am = VME_AM_A16 | MVMEBUS_AM_CAP_DATA; 91 92 /* However, SUPER/USER is selectable... */ 93 if (reg & VME2_IO_CONTROL_I1SU) 94 sc->sc_master[0].vr_am |= MVMEBUS_AM_CAP_SUPER; 95 else 96 sc->sc_master[0].vr_am |= MVMEBUS_AM_CAP_USER; 97 98 /* As is the datasize */ 99 sc->sc_master[0].vr_datasize = VME_D32 | VME_D16; 100 if (reg & VME2_IO_CONTROL_I1D16) 101 sc->sc_master[0].vr_datasize &= ~VME_D32; 102 103 sc->sc_master[0].vr_locstart = VME2_IO0_LOCAL_START; 104 sc->sc_master[0].vr_mask = VME2_IO0_MASK; 105 sc->sc_master[0].vr_vmestart = VME2_IO0_VME_START; 106 sc->sc_master[0].vr_vmeend = VME2_IO0_VME_END; 107 } else 108 sc->sc_master[0].vr_am = MVMEBUS_AM_DISABLED; 109 110 if (reg & VME2_IO_CONTROL_I2EN) { 111 /* These two ranges are fixed to A24D16 and A32D16 */ 112 sc->sc_master[1].vr_am = VME_AM_A24; 113 sc->sc_master[1].vr_datasize = VME_D16; 114 sc->sc_master[2].vr_am = VME_AM_A32; 115 sc->sc_master[2].vr_datasize = VME_D16; 116 117 /* However, SUPER/USER is selectable */ 118 if (reg & VME2_IO_CONTROL_I2SU) { 119 sc->sc_master[1].vr_am |= MVMEBUS_AM_CAP_SUPER; 120 sc->sc_master[2].vr_am |= MVMEBUS_AM_CAP_SUPER; 121 } else { 122 sc->sc_master[1].vr_am |= MVMEBUS_AM_CAP_USER; 123 sc->sc_master[2].vr_am |= MVMEBUS_AM_CAP_USER; 124 } 125 126 /* As is PROGRAM/DATA */ 127 if (reg & VME2_IO_CONTROL_I2PD) { 128 sc->sc_master[1].vr_am |= MVMEBUS_AM_CAP_PROG; 129 sc->sc_master[2].vr_am |= MVMEBUS_AM_CAP_PROG; 130 } else { 131 sc->sc_master[1].vr_am |= MVMEBUS_AM_CAP_DATA; 132 sc->sc_master[2].vr_am |= MVMEBUS_AM_CAP_DATA; 133 } 134 135 sc->sc_master[1].vr_locstart = VME2_IO1_LOCAL_START; 136 sc->sc_master[1].vr_mask = VME2_IO1_MASK; 137 sc->sc_master[1].vr_vmestart = VME2_IO1_VME_START; 138 sc->sc_master[1].vr_vmeend = VME2_IO1_VME_END; 139 140 sc->sc_master[2].vr_locstart = VME2_IO2_LOCAL_START; 141 sc->sc_master[2].vr_mask = VME2_IO2_MASK; 142 sc->sc_master[2].vr_vmestart = VME2_IO2_VME_START; 143 sc->sc_master[2].vr_vmeend = VME2_IO2_VME_END; 144 } else { 145 sc->sc_master[1].vr_am = MVMEBUS_AM_DISABLED; 146 sc->sc_master[2].vr_am = MVMEBUS_AM_DISABLED; 147 } 148 149 /* 150 * Now read the programmable maps 151 */ 152 for (i = 0; i < VME2_MASTER_WINDOWS; i++) 153 vmetwo_master_range(sc, i, 154 &(sc->sc_master[i + VME2_MASTER_PROG_START])); 155 156 /* XXX: No A16 slave yet :XXX */ 157 sc->sc_slave[VME2_SLAVE_A16].vr_am = MVMEBUS_AM_DISABLED; 158 159 for (i = 0; i < VME2_SLAVE_WINDOWS; i++) { 160 vmetwo_slave_range(sc, i, VME_AM_A32, 161 &sc->sc_slave[i + VME2_SLAVE_PROG_START]); 162 vmetwo_slave_range(sc, i, VME_AM_A24, 163 &sc->sc_slave[i + VME2_SLAVE_PROG_START + 2]); 164 } 165 166 mvmebus_attach(&sc->sc_mvmebus); 167 } 168 169 void 170 vmetwo_master_range(struct vmetwo_softc *sc, int range, struct mvmebus_range *vr) 171 { 172 u_int32_t start, end, attr; 173 u_int32_t reg; 174 175 /* 176 * First, check if the range is actually enabled... 177 */ 178 reg = vme2_lcsr_read(sc, VME2LCSR_MASTER_ENABLE); 179 if ((reg & VME2_MASTER_ENABLE(range)) == 0) { 180 vr->vr_am = MVMEBUS_AM_DISABLED; 181 return; 182 } 183 184 /* 185 * Fetch and record the range's attributes 186 */ 187 attr = vme2_lcsr_read(sc, VME2LCSR_MASTER_ATTR); 188 attr >>= VME2_MASTER_ATTR_AM_SHIFT(range); 189 190 /* 191 * Fix up the datasizes available through this range 192 */ 193 vr->vr_datasize = VME_D32 | VME_D16; 194 if (attr & VME2_MASTER_ATTR_D16) 195 vr->vr_datasize &= ~VME_D32; 196 attr &= VME2_MASTER_ATTR_AM_MASK; 197 198 vr->vr_am = (attr & VME_AM_ADRSIZEMASK) | MVMEBUS_AM2CAP(attr); 199 switch (vr->vr_am & VME_AM_ADRSIZEMASK) { 200 case VME_AM_A32: 201 default: 202 vr->vr_mask = 0xffffffffu; 203 break; 204 205 case VME_AM_A24: 206 vr->vr_mask = 0x00ffffffu; 207 break; 208 209 case VME_AM_A16: 210 vr->vr_mask = 0x0000ffffu; 211 break; 212 } 213 214 /* 215 * XXX 216 * It would be nice if users of the MI VMEbus code could pass down 217 * whether they can tolerate Write-Posting to their device(s). 218 * XXX 219 */ 220 221 /* 222 * Fetch the local-bus start and end addresses for the range 223 */ 224 reg = vme2_lcsr_read(sc, VME2LCSR_MASTER_ADDRESS(range)); 225 start = (reg & VME2_MAST_ADDRESS_START_MASK); 226 start <<= VME2_MAST_ADDRESS_START_SHIFT; 227 vr->vr_locstart = start & ~vr->vr_mask; 228 end = (reg & VME2_MAST_ADDRESS_END_MASK); 229 end <<= VME2_MAST_ADDRESS_END_SHIFT; 230 end |= 0xffffu; 231 end += 1; 232 233 /* 234 * Local->VMEbus map '4' has optional translation bits, so 235 * the VMEbus start and end addresses may need to be adjusted. 236 */ 237 if (range == 3 && (reg = vme2_lcsr_read(sc, VME2LCSR_MAST4_TRANS))!=0) { 238 uint32_t addr, sel, len = end - start; 239 240 reg = vme2_lcsr_read(sc, VME2LCSR_MAST4_TRANS); 241 reg &= VME2_MAST4_TRANS_SELECT_MASK; 242 sel = reg << VME2_MAST4_TRANS_SELECT_SHIFT; 243 244 reg = vme2_lcsr_read(sc, VME2LCSR_MAST4_TRANS); 245 reg &= VME2_MAST4_TRANS_ADDRESS_MASK; 246 addr = reg << VME2_MAST4_TRANS_ADDRESS_SHIFT; 247 248 start = (addr & sel) | (start & (~sel)); 249 end = start + len; 250 vr->vr_mask &= len - 1; 251 } 252 253 /* XXX Deal with overlap of onboard RAM address space */ 254 /* XXX Then again, 167-Bug warns about this at setup time ... */ 255 256 /* 257 * Fixup the addresses this range corresponds to 258 */ 259 vr->vr_vmestart = start & vr->vr_mask; 260 vr->vr_vmeend = (end - 1) & vr->vr_mask; 261 } 262 263 void 264 vmetwo_slave_range(struct vmetwo_softc *sc, int range, vme_am_t am, struct mvmebus_range *vr) 265 { 266 u_int32_t reg; 267 268 /* 269 * First, check if the range is actually enabled. 270 * Note that bit 1 of `range' is used to indicte if we're 271 * looking for an A24 range (set) or an A32 range (clear). 272 */ 273 reg = vme2_lcsr_read(sc, VME2LCSR_SLAVE_CTRL); 274 275 if (am == VME_AM_A32 && (reg & VME2_SLAVE_AMSEL_A32(range))) { 276 vr->vr_am = VME_AM_A32; 277 vr->vr_mask = 0xffffffffu; 278 } else 279 if (am == VME_AM_A24 && (reg & VME2_SLAVE_AMSEL_A24(range))) { 280 vr->vr_am = VME_AM_A24; 281 vr->vr_mask = 0x00ffffffu; 282 } else { 283 /* The range is not enabled */ 284 vr->vr_am = MVMEBUS_AM_DISABLED; 285 return; 286 } 287 288 if ((reg & VME2_SLAVE_AMSEL_DAT(range)) != 0) 289 vr->vr_am |= MVMEBUS_AM_CAP_DATA; 290 291 if ((reg & VME2_SLAVE_AMSEL_PGM(range)) != 0) 292 vr->vr_am |= MVMEBUS_AM_CAP_PROG; 293 294 if ((reg & VME2_SLAVE_AMSEL_USR(range)) != 0) 295 vr->vr_am |= MVMEBUS_AM_CAP_USER; 296 297 if ((reg & VME2_SLAVE_AMSEL_SUP(range)) != 0) 298 vr->vr_am |= MVMEBUS_AM_CAP_SUPER; 299 300 if ((reg & VME2_SLAVE_AMSEL_BLK(range)) != 0) 301 vr->vr_am |= MVMEBUS_AM_CAP_BLK; 302 303 if ((reg & VME2_SLAVE_AMSEL_BLKD64(range)) != 0) 304 vr->vr_am |= MVMEBUS_AM_CAP_BLKD64; 305 306 vr->vr_datasize = VME_D32 | VME_D16 | VME_D8; 307 308 /* 309 * Record the VMEbus start and end addresses of the slave image 310 */ 311 reg = vme2_lcsr_read(sc, VME2LCSR_SLAVE_ADDRESS(range)); 312 vr->vr_vmestart = reg & VME2_SLAVE_ADDRESS_START_MASK; 313 vr->vr_vmestart <<= VME2_SLAVE_ADDRESS_START_SHIFT; 314 vr->vr_vmestart &= vr->vr_mask; 315 vr->vr_vmeend = reg & VME2_SLAVE_ADDRESS_END_MASK; 316 vr->vr_vmeend <<= VME2_SLAVE_ADDRESS_END_SHIFT; 317 vr->vr_vmeend &= vr->vr_mask; 318 vr->vr_vmeend |= 0xffffu; 319 320 /* 321 * Now figure out the local-bus address 322 */ 323 reg = vme2_lcsr_read(sc, VME2LCSR_SLAVE_CTRL); 324 if ((reg & VME2_SLAVE_CTRL_ADDER(range)) != 0) { 325 reg = vme2_lcsr_read(sc, VME2LCSR_SLAVE_TRANS(range)); 326 reg &= VME2_SLAVE_TRANS_ADDRESS_MASK; 327 reg <<= VME2_SLAVE_TRANS_ADDRESS_SHIFT; 328 vr->vr_locstart = vr->vr_vmestart + reg; 329 } else { 330 u_int32_t sel, addr; 331 332 reg = vme2_lcsr_read(sc, VME2LCSR_SLAVE_TRANS(range)); 333 sel = reg & VME2_SLAVE_TRANS_SELECT_MASK; 334 sel <<= VME2_SLAVE_TRANS_SELECT_SHIFT; 335 addr = reg & VME2_SLAVE_TRANS_ADDRESS_MASK; 336 addr <<= VME2_SLAVE_TRANS_ADDRESS_SHIFT; 337 338 vr->vr_locstart = addr & sel; 339 vr->vr_locstart |= vr->vr_vmestart & (~sel); 340 } 341 }
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