1 /* $NetBSD: cac_eisa.c,v 1.26 2021/01/27 04:35:15 thorpej 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 1.26 2021/01/27 04:35:15 thorpej 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 struct cac_eisa_type { 106 const char *ct_typestr; 107 const struct cac_linkage *ct_linkage; 108 }; 109 110 static const struct cac_eisa_type cpq4001 = { 111 .ct_typestr = "IDA", 112 .ct_linkage = &cac_eisa_l0 113 }; 114 115 static const struct cac_eisa_type cpq4002 = { 116 .ct_typestr = "IDA-2", 117 .ct_linkage = &cac_eisa_l0 118 }; 119 120 static const struct cac_eisa_type cpq4010 = { 121 .ct_typestr = "IEAS", 122 .ct_linkage = &cac_eisa_l0 123 }; 124 125 static const struct cac_eisa_type cpq4020 = { 126 .ct_typestr = "SMART", 127 .ct_linkage = &cac_eisa_l0 128 }; 129 130 static const struct cac_eisa_type cpq4030 = { 131 .ct_typestr = "SMART-2/E", 132 .ct_linkage = &cac_l0 133 }; 134 135 static const struct device_compatible_entry compat_data[] = { 136 { .compat = "CPQ4001", .data = &cpq4001 }, 137 { .compat = "CPQ4002", .data = &cpq4002 }, 138 { .compat = "CPQ4010", .data = &cpq4010 }, 139 { .compat = "CPQ4020", .data = &cpq4020 }, 140 { .compat = "CPQ4030", .data = &cpq4030 }, 141 DEVICE_COMPAT_EOL 142 }; 143 144 static int 145 cac_eisa_match(device_t parent, cfdata_t match, void *aux) 146 { 147 struct eisa_attach_args *ea = aux; 148 149 return (eisa_compatible_match(ea, compat_data)); 150 } 151 152 static void 153 cac_eisa_attach(device_t parent, device_t self, void *aux) 154 { 155 struct eisa_attach_args *ea = aux; 156 const struct device_compatible_entry *dce; 157 const struct cac_eisa_type *ct; 158 bus_space_handle_t ioh; 159 eisa_chipset_tag_t ec; 160 eisa_intr_handle_t ih; 161 struct cac_softc *sc; 162 bus_space_tag_t iot; 163 const char *intrstr; 164 int irq; 165 char intrbuf[EISA_INTRSTR_LEN]; 166 167 sc = device_private(self); 168 iot = ea->ea_iot; 169 ec = ea->ea_ec; 170 171 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 172 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 173 aprint_error(": can't map i/o space\n"); 174 return; 175 } 176 177 dce = eisa_compatible_lookup(ea, compat_data); 178 KASSERT(dce != NULL); 179 ct = dce->data; 180 181 sc->sc_dev = self; 182 sc->sc_iot = iot; 183 sc->sc_ioh = ioh; 184 sc->sc_dmat = ea->ea_dmat; 185 186 /* 187 * Map and establish the interrupt. 188 */ 189 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 190 case 0x20: 191 irq = 10; 192 break; 193 case 0x10: 194 irq = 11; 195 break; 196 case 0x40: 197 irq = 14; 198 break; 199 case 0x80: 200 irq = 15; 201 break; 202 default: 203 aprint_error(": controller on invalid IRQ\n"); 204 return; 205 } 206 207 if (eisa_intr_map(ec, irq, &ih)) { 208 aprint_error(": can't map interrupt (%d)\n", irq); 209 return; 210 } 211 212 intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf)); 213 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 214 cac_intr, sc)) == NULL) { 215 aprint_error(": can't establish interrupt"); 216 if (intrstr != NULL) 217 aprint_normal(" at %s", intrstr); 218 aprint_normal("\n"); 219 return; 220 } 221 222 /* 223 * Print board type and attach to the bus-independent code. 224 */ 225 aprint_normal(": Compaq %s\n", ct->ct_typestr); 226 memcpy(&sc->sc_cl, ct->ct_linkage, sizeof(sc->sc_cl)); 227 cac_init(sc, intrstr, 0); 228 } 229 230 /* 231 * Linkage specific to EISA boards. 232 */ 233 234 static int 235 cac_eisa_l0_fifo_full(struct cac_softc *sc) 236 { 237 238 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 239 CAC_EISA_CHANNEL_CLEAR) == 0); 240 } 241 242 static void 243 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 244 { 245 u_int16_t size; 246 247 /* 248 * On these boards, `ccb_hdr.size' is actually for control flags. 249 * Set it to zero and pass the value by means of an I/O port. 250 */ 251 size = le16toh(ccb->ccb_hdr.size) << 2; 252 ccb->ccb_hdr.size = 0; 253 254 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 255 (char *)ccb - (char *)sc->sc_ccbs, 256 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 257 258 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 259 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 260 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 261 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 262 } 263 264 static struct cac_ccb * 265 cac_eisa_l0_completed(struct cac_softc *sc) 266 { 267 struct cac_ccb *ccb; 268 u_int32_t off; 269 u_int8_t status; 270 271 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 272 CAC_EISA_CHANNEL_BUSY) == 0) 273 return (NULL); 274 275 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 276 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 277 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 278 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 279 280 if (off == 0) 281 return (NULL); 282 283 off = (off & ~3) - sc->sc_ccbs_paddr; 284 ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off); 285 286 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 287 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 288 289 ccb->ccb_req.error = status; 290 291 if ((off & 3) != 0 && ccb->ccb_req.error == 0) 292 ccb->ccb_req.error = CAC_RET_CMD_REJECTED; 293 294 return (ccb); 295 } 296 297 static int 298 cac_eisa_l0_intr_pending(struct cac_softc *sc) 299 { 300 301 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 302 CAC_EISA_CHANNEL_BUSY); 303 } 304 305 static void 306 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 307 { 308 309 if (state) { 310 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 311 ~CAC_EISA_CHANNEL_CLEAR); 312 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 313 CAC_EISA_CHANNEL_BUSY); 314 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 315 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 316 } else 317 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 318 } 319 320 MODULE(MODULE_CLASS_DRIVER, cac_eisa, "cac"); /* No eisa module yet! */ 321 322 #ifdef _MODULE 323 /* 324 * XXX Don't allow ioconf.c to redefine the "struct cfdriver cac_cd" 325 * XXX it will be defined in the common-code module 326 */ 327 #undef CFDRIVER_DECL 328 #define CFDRIVER_DECL(name, class, attr) 329 #include "ioconf.c" 330 #endif 331 332 static int 333 cac_eisa_modcmd(modcmd_t cmd, void *opaque) 334 { 335 int error = 0; 336 337 #ifdef _MODULE 338 switch (cmd) { 339 case MODULE_CMD_INIT: 340 /* 341 * We skip over the first entry in cfdriver[] array 342 * since the cfdriver is attached by the common 343 * (non-attachment-specific) code. 344 */ 345 error = config_init_component(&cfdriver_ioconf_cac_eisa[1], 346 cfattach_ioconf_cac_eisa, cfdata_ioconf_cac_eisa); 347 break; 348 case MODULE_CMD_FINI: 349 error = config_fini_component(&cfdriver_ioconf_cac_eisa[1], 350 cfattach_ioconf_cac_eisa, cfdata_ioconf_cac_eisa); 351 break; 352 default: 353 error = ENOTTY; 354 break; 355 } 356 #endif 357 358 return error; 359 } 360
Indexes created Thu Sep 25 16:09:42 GMT 2025