qec.c revision 1.1
1 /* $NetBSD: qec.c,v 1.1 1998/07/27 19:26:32 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 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/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/errno.h> 44 #include <sys/ioctl.h> 45 #include <sys/device.h> 46 #include <sys/malloc.h> 47 #include <sys/buf.h> 48 #include <sys/proc.h> 49 #include <sys/user.h> 50 51 #include <sparc/bus.h> 52 #include <sparc/autoconf.h> 53 #include <sparc/cpu.h> 54 55 #include <dev/sbus/sbusvar.h> 56 #include <dev/sbus/qecreg.h> 57 #include <dev/sbus/qecvar.h> 58 59 static int qecprint __P((void *, const char *)); 60 static int qecmatch __P((struct device *, struct cfdata *, void *)); 61 static void qecattach __P((struct device *, struct device *, void *)); 62 63 static int qec_bus_map __P(( 64 bus_space_tag_t, 65 bus_type_t, /*slot*/ 66 bus_addr_t, /*offset*/ 67 bus_size_t, /*size*/ 68 int, /*flags*/ 69 vm_offset_t, /*preferred virtual address */ 70 bus_space_handle_t *)); 71 72 struct cfattach qec_ca = { 73 sizeof(struct qec_softc), qecmatch, qecattach 74 }; 75 76 int 77 qecprint(aux, busname) 78 void *aux; 79 const char *busname; 80 { 81 struct sbus_attach_args *sa = aux; 82 bus_space_tag_t t = sa->sa_bustag; 83 struct qec_softc *sc = t->cookie; 84 85 sa->sa_bustag = sc->sc_bustag; /* XXX */ 86 sbus_print(aux, busname); /* XXX */ 87 sa->sa_bustag = t; /* XXX */ 88 return (UNCONF); 89 } 90 91 int 92 qecmatch(parent, cf, aux) 93 struct device *parent; 94 struct cfdata *cf; 95 void *aux; 96 { 97 struct sbus_attach_args *sa = aux; 98 99 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 100 } 101 102 /* 103 * Attach all the sub-devices we can find 104 */ 105 void 106 qecattach(parent, self, aux) 107 struct device *parent, *self; 108 void *aux; 109 { 110 #if defined(SUN4C) || defined(SUN4M) 111 struct sbus_attach_args *sa = aux; 112 struct qec_softc *sc = (void *)self; 113 int node; 114 int sbusburst; 115 bus_space_tag_t sbt; 116 bus_space_handle_t bh; 117 struct bootpath *bp; 118 int error; 119 int nreg; 120 struct rom_reg *rr; 121 122 sc->sc_bustag = sa->sa_bustag; 123 sc->sc_dmatag = sa->sa_dmatag; 124 node = sa->sa_node; 125 126 rr = NULL; 127 if (getpropA(node, "reg", sizeof(struct rom_reg), 128 &nreg, (void **)&rr) != 0) { 129 printf("%s: cannot get register property\n", self->dv_xname); 130 return; 131 } 132 if (nreg < 2) { 133 printf("%s: only %d register sets\n", self->dv_xname, nreg); 134 return; 135 } 136 137 if (sbus_bus_map(sa->sa_bustag, 138 (bus_type_t)rr[0].rr_iospace, 139 (bus_addr_t)rr[0].rr_paddr, 140 (bus_size_t)rr[0].rr_len, 141 BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { 142 printf("%s: attach: cannot map registers\n", self->dv_xname); 143 return; 144 } 145 sc->sc_regs = (void *)bh; 146 147 /* 148 * This device's "register space 1" is just a buffer where the 149 * Lance ring-buffers can be stored. Note the buffer's location 150 * and size, so the child driver can pick them up. 151 */ 152 if (sbus_bus_map(sa->sa_bustag, 153 (bus_type_t)rr[1].rr_iospace, 154 (bus_addr_t)rr[1].rr_paddr, 155 (bus_size_t)rr[1].rr_len, 156 BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { 157 printf("%s: attach: cannot map registers\n", self->dv_xname); 158 return; 159 } 160 sc->sc_buffer = (caddr_t)bh; 161 sc->sc_bufsiz = (bus_size_t)rr[1].rr_len; 162 163 /* 164 * Get transfer burst size from PROM 165 */ 166 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 167 if (sbusburst == 0) 168 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 169 170 sc->sc_burst = getpropint(node, "burst-sizes", -1); 171 if (sc->sc_burst == -1) 172 /* take SBus burst sizes */ 173 sc->sc_burst = sbusburst; 174 175 /* Clamp at parent's burst sizes */ 176 sc->sc_burst &= sbusburst; 177 178 sbus_establish(&sc->sc_sd, &sc->sc_dev); 179 180 181 /* 182 * Collect address translations from the OBP. 183 */ 184 error = getpropA(node, "ranges", sizeof(struct rom_range), 185 &sc->sc_nrange, (void **)&sc->sc_range); 186 switch (error) { 187 case 0: 188 break; 189 case ENOENT: 190 default: 191 panic("%s: error getting ranges property", self->dv_xname); 192 } 193 194 /* Propagate bootpath */ 195 if (sa->sa_bp != NULL) 196 bp = sa->sa_bp + 1; 197 else 198 bp = NULL; 199 200 /* Allocate a bus tag */ 201 sbt = (bus_space_tag_t) 202 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 203 if (sbt == NULL) { 204 printf("%s: attach: out of memory\n", self->dv_xname); 205 return; 206 } 207 208 bzero(sbt, sizeof *sbt); 209 sbt->cookie = sc; 210 sbt->parent = sc->sc_bustag; 211 sbt->sparc_bus_map = qec_bus_map; 212 213 printf(": %dK memory\n", sc->sc_bufsiz / 1024); 214 215 /* search through children */ 216 for (node = firstchild(node); node; node = nextsibling(node)) { 217 struct sbus_attach_args sa; 218 sbus_setup_attach_args((struct sbus_softc *)parent, 219 sbt, sc->sc_dmatag, node, bp, &sa); 220 (void)config_found(&sc->sc_dev, (void *)&sa, qecprint); 221 } 222 free(rr, M_DEVBUF); 223 #endif /* SUN4C || SUN4M */ 224 } 225 226 int 227 qec_bus_map(t, btype, offset, size, flags, vaddr, hp) 228 bus_space_tag_t t; 229 bus_type_t btype; 230 bus_addr_t offset; 231 bus_size_t size; 232 int flags; 233 vm_offset_t vaddr; 234 bus_space_handle_t *hp; 235 { 236 struct qec_softc *sc = t->cookie; 237 int slot = btype; 238 int i; 239 240 for (i = 0; i < sc->sc_nrange; i++) { 241 bus_addr_t paddr; 242 bus_type_t iospace; 243 244 if (sc->sc_range[i].cspace != slot) 245 continue; 246 247 /* We've found the connection to the parent bus */ 248 paddr = sc->sc_range[i].poffset + offset; 249 iospace = sc->sc_range[i].pspace; 250 return (bus_space_map2(sc->sc_bustag, iospace, paddr, 251 size, flags, vaddr, hp)); 252 } 253 254 return (EINVAL); 255 } 256
Indexes created Tue Sep 23 02:09:52 GMT 2025