1 /* $OpenBSD: cac_eisa.c,v 1.4 2009/06/02 11:38:21 deraadt 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 2000 Jonathan Lemon 35 * Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net> 36 * All Rights Reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions, and the following disclaimer, 43 * without modification, immediately at the beginning of the file. 44 * 2. The name of the author may not be used to endorse or promote products 45 * derived from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 51 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57 * SUCH DAMAGE. 58 */ 59 60 /* 61 * EISA front-end for cac(4) driver. 62 */ 63 64 #include <sys/types.h> 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/device.h> 68 69 #include <machine/bus.h> 70 #include <machine/intr.h> 71 72 #include <dev/eisa/eisavar.h> 73 #include <dev/eisa/eisadevs.h> 74 75 #include <scsi/scsi_all.h> 76 #include <scsi/scsi_disk.h> 77 #include <scsi/scsiconf.h> 78 79 #include <dev/ic/cacreg.h> 80 #include <dev/ic/cacvar.h> 81 82 #define CAC_EISA_SLOT_OFFSET 0x0c88 83 #define CAC_EISA_IOSIZE 0x0017 84 #define CAC_EISA_IOCONF 0x38 85 86 int cac_eisa_match(struct device *, void *, void *); 87 void cac_eisa_attach(struct device *, struct device *, void *); 88 89 struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 90 int cac_eisa_l0_fifo_full(struct cac_softc *); 91 void cac_eisa_l0_intr_enable(struct cac_softc *, int); 92 int cac_eisa_l0_intr_pending(struct cac_softc *); 93 void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 94 95 struct cfattach cac_eisa_ca = { 96 sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach 97 }; 98 99 static const 100 struct cac_linkage cac_eisa_l0 = { 101 cac_eisa_l0_completed, 102 cac_eisa_l0_fifo_full, 103 cac_eisa_l0_intr_enable, 104 cac_eisa_l0_intr_pending, 105 cac_eisa_l0_submit 106 }; 107 108 static const 109 struct cac_eisa_type { 110 const char *ct_prodstr; 111 const char *ct_typestr; 112 const struct cac_linkage *ct_linkage; 113 } 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 int 122 cac_eisa_match(parent, match, aux) 123 struct device *parent; 124 void *match, *aux; 125 { 126 struct eisa_attach_args *ea; 127 int i; 128 129 ea = aux; 130 131 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 132 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 133 return (1); 134 135 return (0); 136 } 137 138 void 139 cac_eisa_attach(parent, self, aux) 140 struct device *parent; 141 struct device *self; 142 void *aux; 143 { 144 struct eisa_attach_args *ea; 145 bus_space_handle_t ioh; 146 eisa_chipset_tag_t ec; 147 eisa_intr_handle_t ih; 148 struct cac_softc *sc; 149 bus_space_tag_t iot; 150 const char *intrstr; 151 int irq, i; 152 153 ea = aux; 154 sc = (struct cac_softc *)self; 155 iot = ea->ea_iot; 156 ec = ea->ea_ec; 157 158 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 159 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 160 printf(": can't map i/o space\n"); 161 return; 162 } 163 164 /* 165 * Print board type and attach to the bus-independent code. 166 */ 167 for (i = 0; i < nitems(cac_eisa_type); i++) 168 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 169 break; 170 171 if (i == nitems(cac_eisa_type)) { 172 printf(": failed to attach %s\n", ea->ea_idstring); 173 return; 174 } 175 176 sc->sc_iot = iot; 177 sc->sc_ioh = ioh; 178 sc->sc_dmat = ea->ea_dmat; 179 180 /* 181 * Map and establish the interrupt. 182 */ 183 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 184 case 0x20: 185 irq = 10; 186 break; 187 case 0x10: 188 irq = 11; 189 break; 190 case 0x40: 191 irq = 14; 192 break; 193 case 0x80: 194 irq = 15; 195 break; 196 default: 197 printf(": controller on invalid IRQ\n"); 198 return; 199 } 200 201 if (eisa_intr_map(ec, irq, &ih)) { 202 printf(": can't map interrupt (%d)\n", irq); 203 return; 204 } 205 206 intrstr = eisa_intr_string(ec, ih); 207 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 208 cac_intr, sc, sc->sc_dv.dv_xname)) == NULL) { 209 printf(": can't establish interrupt"); 210 if (intrstr != NULL) 211 printf(" at %s", intrstr); 212 printf("\n"); 213 return; 214 } 215 216 printf(" %s: Compaq %s\n", intrstr, cac_eisa_type[i].ct_typestr); 217 sc->sc_cl = cac_eisa_type[i].ct_linkage; 218 cac_init(sc, 0); 219 } 220 221 /* 222 * Linkage specific to EISA boards. 223 */ 224 225 int 226 cac_eisa_l0_fifo_full(struct cac_softc *sc) 227 { 228 229 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 230 CAC_EISA_CHANNEL_CLEAR) == 0); 231 } 232 233 void 234 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 235 { 236 u_int16_t size; 237 238 /* 239 * On these boards, `ccb_hdr.size' is actually for control flags. 240 * Set it to zero and pass the value by means of an I/O port. 241 */ 242 size = letoh16(ccb->ccb_hdr.size) << 2; 243 ccb->ccb_hdr.size = 0; 244 245 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs, 246 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 247 248 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 249 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 250 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 251 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 252 } 253 254 struct cac_ccb * 255 cac_eisa_l0_completed(struct cac_softc *sc) 256 { 257 struct cac_ccb *ccb; 258 u_int32_t off; 259 u_int8_t status; 260 261 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 262 CAC_EISA_CHANNEL_BUSY) == 0) 263 return (NULL); 264 265 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 266 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 267 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 268 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 269 270 if (off == 0) 271 return (NULL); 272 273 off = (off & ~3) - sc->sc_ccbs_paddr; 274 ccb = (struct cac_ccb *)(sc->sc_ccbs + off); 275 276 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 277 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 278 279 ccb->ccb_req.error = status; 280 return (ccb); 281 } 282 283 int 284 cac_eisa_l0_intr_pending(struct cac_softc *sc) 285 { 286 287 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 288 CAC_EISA_CHANNEL_BUSY); 289 } 290 291 void 292 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 293 { 294 295 if (state) { 296 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 297 ~CAC_EISA_CHANNEL_CLEAR); 298 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 299 CAC_EISA_CHANNEL_BUSY); 300 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 301 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 302 } else 303 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 304 } 305