qec.c revision 1.2
1 /* $NetBSD: qec.c,v 1.2 1998/07/28 00:44:39 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 <machine/bus.h> 52 #include <machine/autoconf.h> 53 54 #include <dev/sbus/sbusvar.h> 55 #include <dev/sbus/qecreg.h> 56 #include <dev/sbus/qecvar.h> 57 58 static int qecprint __P((void *, const char *)); 59 static int qecmatch __P((struct device *, struct cfdata *, void *)); 60 static void qecattach __P((struct device *, struct device *, void *)); 61 62 static int qec_bus_map __P(( 63 bus_space_tag_t, 64 bus_type_t, /*slot*/ 65 bus_addr_t, /*offset*/ 66 bus_size_t, /*size*/ 67 int, /*flags*/ 68 vm_offset_t, /*preferred virtual address */ 69 bus_space_handle_t *)); 70 71 struct cfattach qec_ca = { 72 sizeof(struct qec_softc), qecmatch, qecattach 73 }; 74 75 int 76 qecprint(aux, busname) 77 void *aux; 78 const char *busname; 79 { 80 struct sbus_attach_args *sa = aux; 81 bus_space_tag_t t = sa->sa_bustag; 82 struct qec_softc *sc = t->cookie; 83 84 sa->sa_bustag = sc->sc_bustag; /* XXX */ 85 sbus_print(aux, busname); /* XXX */ 86 sa->sa_bustag = t; /* XXX */ 87 return (UNCONF); 88 } 89 90 int 91 qecmatch(parent, cf, aux) 92 struct device *parent; 93 struct cfdata *cf; 94 void *aux; 95 { 96 struct sbus_attach_args *sa = aux; 97 98 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 99 } 100 101 /* 102 * Attach all the sub-devices we can find 103 */ 104 void 105 qecattach(parent, self, aux) 106 struct device *parent, *self; 107 void *aux; 108 { 109 struct sbus_attach_args *sa = aux; 110 struct qec_softc *sc = (void *)self; 111 int node; 112 int sbusburst; 113 bus_space_tag_t sbt; 114 bus_space_handle_t bh; 115 struct bootpath *bp; 116 int error; 117 int nreg; 118 struct rom_reg *rr; 119 120 sc->sc_bustag = sa->sa_bustag; 121 sc->sc_dmatag = sa->sa_dmatag; 122 node = sa->sa_node; 123 124 rr = NULL; 125 if (getpropA(node, "reg", sizeof(struct rom_reg), 126 &nreg, (void **)&rr) != 0) { 127 printf("%s: cannot get register property\n", self->dv_xname); 128 return; 129 } 130 if (nreg < 2) { 131 printf("%s: only %d register sets\n", self->dv_xname, nreg); 132 return; 133 } 134 135 if (sbus_bus_map(sa->sa_bustag, 136 (bus_type_t)rr[0].rr_iospace, 137 (bus_addr_t)rr[0].rr_paddr, 138 (bus_size_t)rr[0].rr_len, 139 BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { 140 printf("%s: attach: cannot map registers\n", self->dv_xname); 141 return; 142 } 143 sc->sc_regs = (void *)bh; 144 145 /* 146 * This device's "register space 1" is just a buffer where the 147 * Lance ring-buffers can be stored. Note the buffer's location 148 * and size, so the child driver can pick them up. 149 */ 150 if (sbus_bus_map(sa->sa_bustag, 151 (bus_type_t)rr[1].rr_iospace, 152 (bus_addr_t)rr[1].rr_paddr, 153 (bus_size_t)rr[1].rr_len, 154 BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { 155 printf("%s: attach: cannot map registers\n", self->dv_xname); 156 return; 157 } 158 sc->sc_buffer = (caddr_t)bh; 159 sc->sc_bufsiz = (bus_size_t)rr[1].rr_len; 160 161 /* 162 * Get transfer burst size from PROM 163 */ 164 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 165 if (sbusburst == 0) 166 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 167 168 sc->sc_burst = getpropint(node, "burst-sizes", -1); 169 if (sc->sc_burst == -1) 170 /* take SBus burst sizes */ 171 sc->sc_burst = sbusburst; 172 173 /* Clamp at parent's burst sizes */ 174 sc->sc_burst &= sbusburst; 175 176 sbus_establish(&sc->sc_sd, &sc->sc_dev); 177 178 179 /* 180 * Collect address translations from the OBP. 181 */ 182 error = getpropA(node, "ranges", sizeof(struct rom_range), 183 &sc->sc_nrange, (void **)&sc->sc_range); 184 switch (error) { 185 case 0: 186 break; 187 case ENOENT: 188 default: 189 panic("%s: error getting ranges property", self->dv_xname); 190 } 191 192 /* Propagate bootpath */ 193 if (sa->sa_bp != NULL) 194 bp = sa->sa_bp + 1; 195 else 196 bp = NULL; 197 198 /* Allocate a bus tag */ 199 sbt = (bus_space_tag_t) 200 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 201 if (sbt == NULL) { 202 printf("%s: attach: out of memory\n", self->dv_xname); 203 return; 204 } 205 206 bzero(sbt, sizeof *sbt); 207 sbt->cookie = sc; 208 sbt->parent = sc->sc_bustag; 209 sbt->sparc_bus_map = qec_bus_map; 210 211 printf(": %dK memory\n", sc->sc_bufsiz / 1024); 212 213 /* search through children */ 214 for (node = firstchild(node); node; node = nextsibling(node)) { 215 struct sbus_attach_args sa; 216 sbus_setup_attach_args((struct sbus_softc *)parent, 217 sbt, sc->sc_dmatag, node, bp, &sa); 218 (void)config_found(&sc->sc_dev, (void *)&sa, qecprint); 219 } 220 free(rr, M_DEVBUF); 221 } 222 223 int 224 qec_bus_map(t, btype, offset, size, flags, vaddr, hp) 225 bus_space_tag_t t; 226 bus_type_t btype; 227 bus_addr_t offset; 228 bus_size_t size; 229 int flags; 230 vm_offset_t vaddr; 231 bus_space_handle_t *hp; 232 { 233 struct qec_softc *sc = t->cookie; 234 int slot = btype; 235 int i; 236 237 for (i = 0; i < sc->sc_nrange; i++) { 238 bus_addr_t paddr; 239 bus_type_t iospace; 240 241 if (sc->sc_range[i].cspace != slot) 242 continue; 243 244 /* We've found the connection to the parent bus */ 245 paddr = sc->sc_range[i].poffset + offset; 246 iospace = sc->sc_range[i].pspace; 247 return (bus_space_map2(sc->sc_bustag, iospace, paddr, 248 size, flags, vaddr, hp)); 249 } 250 251 return (EINVAL); 252 } 253
Indexes created Mon Sep 22 21:09:42 GMT 2025