cac_eisa.c revision 1.25
1 /* $NetBSD: cac_eisa.c,v 1.25 2016/09/27 03:33:32 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 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 * Copyright (c) 2000 Jonathan Lemon 34 * Copyright (c) 1999 by Matthew N. Dodd <winter (at) jurai.net> 35 * All Rights Reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions, and the following disclaimer, 42 * without modification, immediately at the beginning of the file. 43 * 2. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 50 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58 59 /* 60 * EISA front-end for cac(4) driver. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: cac_eisa.c,v 1.25 2016/09/27 03:33:32 pgoyette Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/device.h> 69 #include <sys/module.h> 70 #include <sys/bus.h> 71 #include <sys/intr.h> 72 73 #include <dev/eisa/eisavar.h> 74 #include <dev/eisa/eisadevs.h> 75 76 #include <dev/ic/cacreg.h> 77 #include <dev/ic/cacvar.h> 78 79 #include "ioconf.h" 80 81 #define CAC_EISA_SLOT_OFFSET 0x0c88 82 #define CAC_EISA_IOSIZE 0x0017 83 #define CAC_EISA_IOCONF 0x38 84 85 static void cac_eisa_attach(device_t, device_t, void *); 86 static int cac_eisa_match(device_t, cfdata_t, void *); 87 88 static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 89 static int cac_eisa_l0_fifo_full(struct cac_softc *); 90 static void cac_eisa_l0_intr_enable(struct cac_softc *, int); 91 static int cac_eisa_l0_intr_pending(struct cac_softc *); 92 static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 93 94 CFATTACH_DECL3_NEW(cac_eisa, sizeof(struct cac_softc), 95 cac_eisa_match, cac_eisa_attach, NULL, NULL, cac_rescan, NULL, 0); 96 97 static const struct cac_linkage cac_eisa_l0 = { 98 cac_eisa_l0_completed, 99 cac_eisa_l0_fifo_full, 100 cac_eisa_l0_intr_enable, 101 cac_eisa_l0_intr_pending, 102 cac_eisa_l0_submit 103 }; 104 105 static struct cac_eisa_type { 106 const char *ct_prodstr; 107 const char *ct_typestr; 108 const struct cac_linkage *ct_linkage; 109 } cac_eisa_type[] = { 110 { "CPQ4001", "IDA", &cac_eisa_l0 }, 111 { "CPQ4002", "IDA-2", &cac_eisa_l0 }, 112 { "CPQ4010", "IEAS", &cac_eisa_l0 }, 113 { "CPQ4020", "SMART", &cac_eisa_l0 }, 114 { "CPQ4030", "SMART-2/E", &cac_l0 }, 115 }; 116 117 static int 118 cac_eisa_match(device_t parent, cfdata_t match, void *aux) 119 { 120 struct eisa_attach_args *ea; 121 int i; 122 123 ea = aux; 124 125 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 126 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 127 return (1); 128 129 return (0); 130 } 131 132 static void 133 cac_eisa_attach(device_t parent, device_t self, void *aux) 134 { 135 struct eisa_attach_args *ea; 136 bus_space_handle_t ioh; 137 eisa_chipset_tag_t ec; 138 eisa_intr_handle_t ih; 139 struct cac_softc *sc; 140 bus_space_tag_t iot; 141 const char *intrstr; 142 int irq, i; 143 char intrbuf[EISA_INTRSTR_LEN]; 144 145 ea = aux; 146 sc = device_private(self); 147 iot = ea->ea_iot; 148 ec = ea->ea_ec; 149 150 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 151 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 152 aprint_error(": can't map i/o space\n"); 153 return; 154 } 155 156 sc->sc_dev = self; 157 sc->sc_iot = iot; 158 sc->sc_ioh = ioh; 159 sc->sc_dmat = ea->ea_dmat; 160 161 /* 162 * Map and establish the interrupt. 163 */ 164 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 165 case 0x20: 166 irq = 10; 167 break; 168 case 0x10: 169 irq = 11; 170 break; 171 case 0x40: 172 irq = 14; 173 break; 174 case 0x80: 175 irq = 15; 176 break; 177 default: 178 aprint_error(": controller on invalid IRQ\n"); 179 return; 180 } 181 182 if (eisa_intr_map(ec, irq, &ih)) { 183 aprint_error(": can't map interrupt (%d)\n", irq); 184 return; 185 } 186 187 intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf)); 188 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 189 cac_intr, sc)) == NULL) { 190 aprint_error(": can't establish interrupt"); 191 if (intrstr != NULL) 192 aprint_normal(" at %s", intrstr); 193 aprint_normal("\n"); 194 return; 195 } 196 197 /* 198 * Print board type and attach to the bus-independent code. 199 */ 200 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 201 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 202 break; 203 204 aprint_normal(": Compaq %s\n", cac_eisa_type[i].ct_typestr); 205 memcpy(&sc->sc_cl, cac_eisa_type[i].ct_linkage, sizeof(sc->sc_cl)); 206 cac_init(sc, intrstr, 0); 207 } 208 209 /* 210 * Linkage specific to EISA boards. 211 */ 212 213 static int 214 cac_eisa_l0_fifo_full(struct cac_softc *sc) 215 { 216 217 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 218 CAC_EISA_CHANNEL_CLEAR) == 0); 219 } 220 221 static void 222 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 223 { 224 u_int16_t size; 225 226 /* 227 * On these boards, `ccb_hdr.size' is actually for control flags. 228 * Set it to zero and pass the value by means of an I/O port. 229 */ 230 size = le16toh(ccb->ccb_hdr.size) << 2; 231 ccb->ccb_hdr.size = 0; 232 233 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 234 (char *)ccb - (char *)sc->sc_ccbs, 235 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 236 237 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 238 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 239 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 240 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 241 } 242 243 static struct cac_ccb * 244 cac_eisa_l0_completed(struct cac_softc *sc) 245 { 246 struct cac_ccb *ccb; 247 u_int32_t off; 248 u_int8_t status; 249 250 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 251 CAC_EISA_CHANNEL_BUSY) == 0) 252 return (NULL); 253 254 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 255 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 256 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 257 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 258 259 if (off == 0) 260 return (NULL); 261 262 off = (off & ~3) - sc->sc_ccbs_paddr; 263 ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off); 264 265 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 266 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 267 268 ccb->ccb_req.error = status; 269 270 if ((off & 3) != 0 && ccb->ccb_req.error == 0) 271 ccb->ccb_req.error = CAC_RET_CMD_REJECTED; 272 273 return (ccb); 274 } 275 276 static int 277 cac_eisa_l0_intr_pending(struct cac_softc *sc) 278 { 279 280 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 281 CAC_EISA_CHANNEL_BUSY); 282 } 283 284 static void 285 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 286 { 287 288 if (state) { 289 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 290 ~CAC_EISA_CHANNEL_CLEAR); 291 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 292 CAC_EISA_CHANNEL_BUSY); 293 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 294 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 295 } else 296 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 297 } 298 299 MODULE(MODULE_CLASS_DRIVER, cac_eisa, "cac"); /* No eisa module yet! */ 300 301 #ifdef _MODULE 302 /* 303 * XXX Don't allow ioconf.c to redefine the "struct cfdriver cac_cd" 304 * XXX it will be defined in the common-code module 305 */ 306 #undef CFDRIVER_DECL 307 #define CFDRIVER_DECL(name, class, attr) 308 #include "ioconf.c" 309 #endif 310 311 static int 312 cac_eisa_modcmd(modcmd_t cmd, void *opaque) 313 { 314 int error = 0; 315 316 #ifdef _MODULE 317 switch (cmd) { 318 case MODULE_CMD_INIT: 319 /* 320 * We skip over the first entry in cfdriver[] array 321 * since the cfdriver is attached by the common 322 * (non-attachment-specific) code. 323 */ 324 error = config_init_component(&cfdriver_ioconf_cac_eisa[1], 325 cfattach_ioconf_cac_eisa, cfdata_ioconf_cac_eisa); 326 break; 327 case MODULE_CMD_FINI: 328 error = config_fini_component(&cfdriver_ioconf_cac_eisa[1], 329 cfattach_ioconf_cac_eisa, cfdata_ioconf_cac_eisa); 330 break; 331 default: 332 error = ENOTTY; 333 break; 334 } 335 #endif 336 337 return error; 338 } 339
Indexes created Mon Sep 29 21:09:56 GMT 2025