1 /* $OpenBSD: cac_eisa.c,v 1.1 2000/12/17 21:35:03 mickey Exp $ */ 2 /* $NetBSD: cac_eisa.c,v 1.1 2000/09/01 12:15:20 ad Exp $ */ 3 4 /*- 5 * Copyright (c) 2000 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Andrew Doran. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 2000 Jonathan Lemon 42 * Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net> 43 * All Rights Reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions, and the following disclaimer, 50 * without modification, immediately at the beginning of the file. 51 * 2. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 58 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 */ 66 67 /* 68 * EISA front-end for cac(4) driver. 69 */ 70 71 #include <sys/types.h> 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/device.h> 75 76 #include <machine/bus.h> 77 #include <machine/intr.h> 78 79 #include <dev/eisa/eisavar.h> 80 #include <dev/eisa/eisadevs.h> 81 82 #include <scsi/scsi_all.h> 83 #include <scsi/scsi_disk.h> 84 #include <scsi/scsiconf.h> 85 86 #include <dev/ic/cacreg.h> 87 #include <dev/ic/cacvar.h> 88 89 #define CAC_EISA_SLOT_OFFSET 0x0c88 90 #define CAC_EISA_IOSIZE 0x0017 91 #define CAC_EISA_IOCONF 0x38 92 93 int cac_eisa_match(struct device *, void *, void *); 94 void cac_eisa_attach(struct device *, struct device *, void *); 95 96 struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 97 int cac_eisa_l0_fifo_full(struct cac_softc *); 98 void cac_eisa_l0_intr_enable(struct cac_softc *, int); 99 int cac_eisa_l0_intr_pending(struct cac_softc *); 100 void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 101 102 struct cfattach cac_eisa_ca = { 103 sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach 104 }; 105 106 static const 107 struct cac_linkage cac_eisa_l0 = { 108 cac_eisa_l0_completed, 109 cac_eisa_l0_fifo_full, 110 cac_eisa_l0_intr_enable, 111 cac_eisa_l0_intr_pending, 112 cac_eisa_l0_submit 113 }; 114 115 static const 116 struct cac_eisa_type { 117 const char *ct_prodstr; 118 const char *ct_typestr; 119 const struct cac_linkage *ct_linkage; 120 } cac_eisa_type[] = { 121 { "CPQ4001", "IDA", &cac_eisa_l0 }, 122 { "CPQ4002", "IDA-2", &cac_eisa_l0 }, 123 { "CPQ4010", "IEAS", &cac_eisa_l0 }, 124 { "CPQ4020", "SMART", &cac_eisa_l0 }, 125 { "CPQ4030", "SMART-2/E", &cac_l0 }, 126 }; 127 128 int 129 cac_eisa_match(parent, match, aux) 130 struct device *parent; 131 void *match, *aux; 132 { 133 struct eisa_attach_args *ea; 134 int i; 135 136 ea = aux; 137 138 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 139 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 140 return (1); 141 142 return (0); 143 } 144 145 void 146 cac_eisa_attach(parent, self, aux) 147 struct device *parent; 148 struct device *self; 149 void *aux; 150 { 151 struct eisa_attach_args *ea; 152 bus_space_handle_t ioh; 153 eisa_chipset_tag_t ec; 154 eisa_intr_handle_t ih; 155 struct cac_softc *sc; 156 bus_space_tag_t iot; 157 const char *intrstr; 158 int irq, i; 159 160 ea = aux; 161 sc = (struct cac_softc *)self; 162 iot = ea->ea_iot; 163 ec = ea->ea_ec; 164 165 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 166 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 167 printf(": can't map i/o space\n"); 168 return; 169 } 170 171 sc->sc_iot = iot; 172 sc->sc_ioh = ioh; 173 sc->sc_dmat = ea->ea_dmat; 174 175 /* 176 * Map and establish the interrupt. 177 */ 178 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 179 case 0x20: 180 irq = 10; 181 break; 182 case 0x10: 183 irq = 11; 184 break; 185 case 0x40: 186 irq = 14; 187 break; 188 case 0x80: 189 irq = 15; 190 break; 191 default: 192 printf(": controller on invalid IRQ\n"); 193 return; 194 } 195 196 if (eisa_intr_map(ec, irq, &ih)) { 197 printf(": can't map interrupt (%d)\n", irq); 198 return; 199 } 200 201 intrstr = eisa_intr_string(ec, ih); 202 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 203 cac_intr, sc, sc->sc_dv.dv_xname)) == NULL) { 204 printf(": can't establish interrupt"); 205 if (intrstr != NULL) 206 printf(" at %s", intrstr); 207 printf("\n"); 208 return; 209 } 210 211 /* 212 * Print board type and attach to the bus-independent code. 213 */ 214 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 215 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 216 break; 217 218 printf(" %s: Compaq %s\n", intrstr, cac_eisa_type[i].ct_typestr); 219 sc->sc_cl = cac_eisa_type[i].ct_linkage; 220 cac_init(sc, 0); 221 } 222 223 /* 224 * Linkage specific to EISA boards. 225 */ 226 227 int 228 cac_eisa_l0_fifo_full(struct cac_softc *sc) 229 { 230 231 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 232 CAC_EISA_CHANNEL_CLEAR) == 0); 233 } 234 235 void 236 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 237 { 238 u_int16_t size; 239 240 /* 241 * On these boards, `ccb_hdr.size' is actually for control flags. 242 * Set it to zero and pass the value by means of an I/O port. 243 */ 244 size = letoh16(ccb->ccb_hdr.size) << 2; 245 ccb->ccb_hdr.size = 0; 246 247 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 248 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 249 250 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 251 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 252 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 253 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 254 } 255 256 struct cac_ccb * 257 cac_eisa_l0_completed(struct cac_softc *sc) 258 { 259 struct cac_ccb *ccb; 260 u_int32_t off; 261 u_int8_t status; 262 263 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 264 CAC_EISA_CHANNEL_BUSY) == 0) 265 return (NULL); 266 267 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 268 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 269 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 270 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 271 272 if (off == 0) 273 return (NULL); 274 275 off = (off & ~3) - sc->sc_ccbs_paddr; 276 ccb = (struct cac_ccb *)(sc->sc_ccbs + off); 277 278 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 279 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 280 281 ccb->ccb_req.error = status; 282 return (ccb); 283 } 284 285 int 286 cac_eisa_l0_intr_pending(struct cac_softc *sc) 287 { 288 289 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 290 CAC_EISA_CHANNEL_BUSY); 291 } 292 293 void 294 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 295 { 296 297 if (state) { 298 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 299 ~CAC_EISA_CHANNEL_CLEAR); 300 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 301 CAC_EISA_CHANNEL_BUSY); 302 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 303 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 304 } else 305 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 306 } 307