1 /* $OpenBSD: cac_eisa.c,v 1.7 2022/04/06 18:59:28 naddy 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/param.h> 65 #include <sys/systm.h> 66 #include <sys/device.h> 67 68 #include <machine/bus.h> 69 #include <machine/intr.h> 70 71 #include <dev/eisa/eisavar.h> 72 #include <dev/eisa/eisadevs.h> 73 74 #include <scsi/scsi_all.h> 75 #include <scsi/scsi_disk.h> 76 #include <scsi/scsiconf.h> 77 78 #include <dev/ic/cacreg.h> 79 #include <dev/ic/cacvar.h> 80 81 #define CAC_EISA_SLOT_OFFSET 0x0c88 82 #define CAC_EISA_IOSIZE 0x0017 83 #define CAC_EISA_IOCONF 0x38 84 85 int cac_eisa_match(struct device *, void *, void *); 86 void cac_eisa_attach(struct device *, struct device *, void *); 87 88 struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 89 int cac_eisa_l0_fifo_full(struct cac_softc *); 90 void cac_eisa_l0_intr_enable(struct cac_softc *, int); 91 int cac_eisa_l0_intr_pending(struct cac_softc *); 92 void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 93 94 const struct cfattach cac_eisa_ca = { 95 sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach 96 }; 97 98 static const 99 struct cac_linkage cac_eisa_l0 = { 100 cac_eisa_l0_completed, 101 cac_eisa_l0_fifo_full, 102 cac_eisa_l0_intr_enable, 103 cac_eisa_l0_intr_pending, 104 cac_eisa_l0_submit 105 }; 106 107 static const 108 struct cac_eisa_type { 109 const char *ct_prodstr; 110 const char *ct_typestr; 111 const struct cac_linkage *ct_linkage; 112 } cac_eisa_type[] = { 113 { "CPQ4001", "IDA", &cac_eisa_l0 }, 114 { "CPQ4002", "IDA-2", &cac_eisa_l0 }, 115 { "CPQ4010", "IEAS", &cac_eisa_l0 }, 116 { "CPQ4020", "SMART", &cac_eisa_l0 }, 117 { "CPQ4030", "SMART-2/E", &cac_l0 }, 118 }; 119 120 int 121 cac_eisa_match(struct device *parent, void *match, void *aux) 122 { 123 struct eisa_attach_args *ea; 124 int i; 125 126 ea = aux; 127 128 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 129 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 130 return (1); 131 132 return (0); 133 } 134 135 void 136 cac_eisa_attach(struct device *parent, struct device *self, void *aux) 137 { 138 struct eisa_attach_args *ea; 139 bus_space_handle_t ioh; 140 eisa_chipset_tag_t ec; 141 eisa_intr_handle_t ih; 142 struct cac_softc *sc; 143 bus_space_tag_t iot; 144 const char *intrstr; 145 int irq, i; 146 147 ea = aux; 148 sc = (struct cac_softc *)self; 149 iot = ea->ea_iot; 150 ec = ea->ea_ec; 151 152 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 153 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 154 printf(": can't map i/o space\n"); 155 return; 156 } 157 158 /* 159 * Print board type and attach to the bus-independent code. 160 */ 161 for (i = 0; i < nitems(cac_eisa_type); i++) 162 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 163 break; 164 165 if (i == nitems(cac_eisa_type)) { 166 printf(": failed to attach %s\n", ea->ea_idstring); 167 return; 168 } 169 170 sc->sc_iot = iot; 171 sc->sc_ioh = ioh; 172 sc->sc_dmat = ea->ea_dmat; 173 174 /* 175 * Map and establish the interrupt. 176 */ 177 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 178 case 0x20: 179 irq = 10; 180 break; 181 case 0x10: 182 irq = 11; 183 break; 184 case 0x40: 185 irq = 14; 186 break; 187 case 0x80: 188 irq = 15; 189 break; 190 default: 191 printf(": controller on invalid IRQ\n"); 192 return; 193 } 194 195 if (eisa_intr_map(ec, irq, &ih)) { 196 printf(": can't map interrupt (%d)\n", irq); 197 return; 198 } 199 200 intrstr = eisa_intr_string(ec, ih); 201 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 202 cac_intr, sc, sc->sc_dv.dv_xname)) == NULL) { 203 printf(": can't establish interrupt"); 204 if (intrstr != NULL) 205 printf(" at %s", intrstr); 206 printf("\n"); 207 return; 208 } 209 210 printf(" %s: Compaq %s\n", intrstr, cac_eisa_type[i].ct_typestr); 211 sc->sc_cl = cac_eisa_type[i].ct_linkage; 212 cac_init(sc, 0); 213 } 214 215 /* 216 * Linkage specific to EISA boards. 217 */ 218 219 int 220 cac_eisa_l0_fifo_full(struct cac_softc *sc) 221 { 222 223 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 224 CAC_EISA_CHANNEL_CLEAR) == 0); 225 } 226 227 void 228 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 229 { 230 u_int16_t size; 231 232 /* 233 * On these boards, `ccb_hdr.size' is actually for control flags. 234 * Set it to zero and pass the value by means of an I/O port. 235 */ 236 size = letoh16(ccb->ccb_hdr.size) << 2; 237 ccb->ccb_hdr.size = 0; 238 239 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs, 240 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 241 242 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 243 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 244 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 245 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 246 } 247 248 struct cac_ccb * 249 cac_eisa_l0_completed(struct cac_softc *sc) 250 { 251 struct cac_ccb *ccb; 252 u_int32_t off; 253 u_int8_t status; 254 255 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 256 CAC_EISA_CHANNEL_BUSY) == 0) 257 return (NULL); 258 259 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 260 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 261 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 262 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 263 264 if (off == 0) 265 return (NULL); 266 267 off = (off & ~3) - sc->sc_ccbs_paddr; 268 ccb = (struct cac_ccb *)(sc->sc_ccbs + off); 269 270 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 271 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 272 273 ccb->ccb_req.error = status; 274 return (ccb); 275 } 276 277 int 278 cac_eisa_l0_intr_pending(struct cac_softc *sc) 279 { 280 281 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 282 CAC_EISA_CHANNEL_BUSY); 283 } 284 285 void 286 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 287 { 288 289 if (state) { 290 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 291 ~CAC_EISA_CHANNEL_CLEAR); 292 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 293 CAC_EISA_CHANNEL_BUSY); 294 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 295 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 296 } else 297 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 298 } 299