cac_eisa.c revision 1.1
1 /* $NetBSD: cac_eisa.c,v 1.1 2000/09/01 12:15:20 ad 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 * 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 /* 40 * Copyright (c) 2000 Jonathan Lemon 41 * Copyright (c) 1999 by Matthew N. Dodd <winter (at) jurai.net> 42 * All Rights Reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions, and the following disclaimer, 49 * without modification, immediately at the beginning of the file. 50 * 2. The name of the author may not be used to endorse or promote products 51 * derived from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 57 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 */ 65 66 /* 67 * EISA front-end for cac(4) driver. 68 */ 69 70 #include <sys/types.h> 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/device.h> 74 75 #include <machine/bus.h> 76 #include <machine/intr.h> 77 78 #include <dev/eisa/eisavar.h> 79 #include <dev/eisa/eisadevs.h> 80 81 #include <dev/ic/cacreg.h> 82 #include <dev/ic/cacvar.h> 83 84 #define CAC_EISA_SLOT_OFFSET 0x0c88 85 #define CAC_EISA_IOSIZE 0x0017 86 #define CAC_EISA_IOCONF 0x38 87 88 static void cac_eisa_attach(struct device *, struct device *, void *); 89 static int cac_eisa_match(struct device *, struct cfdata *, void *); 90 91 static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 92 static void cac_eisa_l0_intr_enable(struct cac_softc *, int); 93 static int cac_eisa_l0_fifo_full(struct cac_softc *); 94 static int cac_eisa_l0_intr_pending(struct cac_softc *); 95 static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 96 97 struct cfattach cac_eisa_ca = { 98 sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach 99 }; 100 101 static struct cac_linkage cac_eisa_l0 = { 102 cac_eisa_l0_completed, 103 cac_eisa_l0_fifo_full, 104 cac_eisa_l0_intr_enable, 105 cac_eisa_l0_intr_pending, 106 cac_eisa_l0_submit 107 }; 108 109 struct cac_eisa_type { 110 const char *ct_prodstr; 111 const char *ct_typestr; 112 struct cac_linkage *ct_linkage; 113 } static cac_eisa_type[] = { 114 { "CPQ4001", "IDA", &cac_eisa_l0 }, 115 { "CPQ4002", "IDA-2", &cac_eisa_l0 }, 116 { "CPQ4010", "IEAS", &cac_eisa_l0 }, 117 { "CPQ4020", "SMART", &cac_eisa_l0 }, 118 { "CPQ4030", "SMART-2/E", &cac_l0 }, 119 }; 120 121 static int 122 cac_eisa_match(struct device *parent, struct cfdata *match, void *aux) 123 { 124 struct eisa_attach_args *ea; 125 int i; 126 127 ea = aux; 128 129 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 130 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 131 return (1); 132 133 return (0); 134 } 135 136 static void 137 cac_eisa_attach(struct device *parent, struct device *self, void *aux) 138 { 139 struct eisa_attach_args *ea; 140 bus_space_handle_t ioh; 141 eisa_chipset_tag_t ec; 142 eisa_intr_handle_t ih; 143 struct cac_softc *sc; 144 bus_space_tag_t iot; 145 const char *intrstr; 146 int irq, i; 147 148 ea = aux; 149 sc = (struct cac_softc *)self; 150 iot = ea->ea_iot; 151 ec = ea->ea_ec; 152 153 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 154 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 155 printf("can't map i/o space\n"); 156 return; 157 } 158 159 sc->sc_iot = iot; 160 sc->sc_ioh = ioh; 161 sc->sc_dmat = ea->ea_dmat; 162 163 /* 164 * Map and establish the interrupt. 165 */ 166 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 167 case 0x20: 168 irq = 10; 169 break; 170 case 0x10: 171 irq = 11; 172 break; 173 case 0x40: 174 irq = 14; 175 break; 176 case 0x80: 177 irq = 15; 178 break; 179 default: 180 printf("controller on invalid IRQ\n"); 181 return; 182 } 183 184 if (eisa_intr_map(ec, irq, &ih)) { 185 printf("can't map interrupt (%d)\n", irq); 186 return; 187 } 188 189 intrstr = eisa_intr_string(ec, ih); 190 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 191 cac_intr, sc)) == NULL) { 192 printf("can't establish interrupt"); 193 if (intrstr != NULL) 194 printf(" at %s", intrstr); 195 printf("\n"); 196 return; 197 } 198 199 /* 200 * Print board type and attach to the bus-independent code. 201 */ 202 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 203 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 204 break; 205 206 printf(": Compaq %s\n", cac_eisa_type[i].ct_typestr); 207 sc->sc_cl = cac_eisa_type[i].ct_linkage; 208 cac_init(sc, intrstr, 0); 209 } 210 211 /* 212 * Linkage specific to EISA boards. 213 */ 214 215 static int 216 cac_eisa_l0_fifo_full(struct cac_softc *sc) 217 { 218 219 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 220 CAC_EISA_CHANNEL_CLEAR) == 0); 221 } 222 223 static void 224 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 225 { 226 u_int16_t size; 227 228 /* 229 * On these boards, `ccb_hdr.size' is actually for control flags. 230 * Set it to zero and pass the value by means of an I/O port. 231 */ 232 size = le16toh(ccb->ccb_hdr.size) << 2; 233 ccb->ccb_hdr.size = 0; 234 235 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs, 236 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 237 238 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 239 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 240 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 241 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 242 } 243 244 static struct cac_ccb * 245 cac_eisa_l0_completed(struct cac_softc *sc) 246 { 247 struct cac_ccb *ccb; 248 u_int32_t off; 249 u_int8_t status; 250 251 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 252 CAC_EISA_CHANNEL_BUSY) == 0) 253 return (NULL); 254 255 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 256 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 257 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 258 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 259 260 if (off == 0) 261 return (NULL); 262 263 off = (off & ~3) - sc->sc_ccbs_paddr; 264 ccb = (struct cac_ccb *)(sc->sc_ccbs + off); 265 266 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 267 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 268 269 ccb->ccb_req.error = status; 270 return (ccb); 271 } 272 273 static int 274 cac_eisa_l0_intr_pending(struct cac_softc *sc) 275 { 276 277 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 278 CAC_EISA_CHANNEL_BUSY); 279 } 280 281 static void 282 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 283 { 284 285 if (state) { 286 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 287 ~CAC_EISA_CHANNEL_CLEAR); 288 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 289 CAC_EISA_CHANNEL_BUSY); 290 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 291 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 292 } else 293 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 294 } 295
Indexes created Thu Sep 25 08:09:54 GMT 2025