cac_eisa.c revision 1.17
1 /* $NetBSD: cac_eisa.c,v 1.17 2007/03/04 06:01:46 christos 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/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: cac_eisa.c,v 1.17 2007/03/04 06:01:46 christos Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/device.h> 76 77 #include <machine/bus.h> 78 #include <machine/intr.h> 79 80 #include <dev/eisa/eisavar.h> 81 #include <dev/eisa/eisadevs.h> 82 83 #include <dev/ic/cacreg.h> 84 #include <dev/ic/cacvar.h> 85 86 #define CAC_EISA_SLOT_OFFSET 0x0c88 87 #define CAC_EISA_IOSIZE 0x0017 88 #define CAC_EISA_IOCONF 0x38 89 90 static void cac_eisa_attach(struct device *, struct device *, void *); 91 static int cac_eisa_match(struct device *, struct cfdata *, void *); 92 93 static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 94 static int cac_eisa_l0_fifo_full(struct cac_softc *); 95 static void cac_eisa_l0_intr_enable(struct cac_softc *, int); 96 static int cac_eisa_l0_intr_pending(struct cac_softc *); 97 static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 98 99 CFATTACH_DECL(cac_eisa, sizeof(struct cac_softc), 100 cac_eisa_match, cac_eisa_attach, NULL, NULL); 101 102 static const struct cac_linkage cac_eisa_l0 = { 103 cac_eisa_l0_completed, 104 cac_eisa_l0_fifo_full, 105 cac_eisa_l0_intr_enable, 106 cac_eisa_l0_intr_pending, 107 cac_eisa_l0_submit 108 }; 109 110 static struct cac_eisa_type { 111 const char *ct_prodstr; 112 const char *ct_typestr; 113 const struct cac_linkage *ct_linkage; 114 } cac_eisa_type[] = { 115 { "CPQ4001", "IDA", &cac_eisa_l0 }, 116 { "CPQ4002", "IDA-2", &cac_eisa_l0 }, 117 { "CPQ4010", "IEAS", &cac_eisa_l0 }, 118 { "CPQ4020", "SMART", &cac_eisa_l0 }, 119 { "CPQ4030", "SMART-2/E", &cac_l0 }, 120 }; 121 122 static int 123 cac_eisa_match(struct device *parent, struct cfdata *match, 124 void *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 static void 139 cac_eisa_attach(struct device *parent, struct device *self, void *aux) 140 { 141 struct eisa_attach_args *ea; 142 bus_space_handle_t ioh; 143 eisa_chipset_tag_t ec; 144 eisa_intr_handle_t ih; 145 struct cac_softc *sc; 146 bus_space_tag_t iot; 147 const char *intrstr; 148 int irq, i; 149 150 ea = aux; 151 sc = device_private(self); 152 iot = ea->ea_iot; 153 ec = ea->ea_ec; 154 155 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 156 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 157 printf("can't map i/o space\n"); 158 return; 159 } 160 161 sc->sc_iot = iot; 162 sc->sc_ioh = ioh; 163 sc->sc_dmat = ea->ea_dmat; 164 165 /* 166 * Map and establish the interrupt. 167 */ 168 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 169 case 0x20: 170 irq = 10; 171 break; 172 case 0x10: 173 irq = 11; 174 break; 175 case 0x40: 176 irq = 14; 177 break; 178 case 0x80: 179 irq = 15; 180 break; 181 default: 182 printf("controller on invalid IRQ\n"); 183 return; 184 } 185 186 if (eisa_intr_map(ec, irq, &ih)) { 187 printf("can't map interrupt (%d)\n", irq); 188 return; 189 } 190 191 intrstr = eisa_intr_string(ec, ih); 192 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 193 cac_intr, sc)) == NULL) { 194 printf("can't establish interrupt"); 195 if (intrstr != NULL) 196 printf(" at %s", intrstr); 197 printf("\n"); 198 return; 199 } 200 201 /* 202 * Print board type and attach to the bus-independent code. 203 */ 204 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 205 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 206 break; 207 208 printf(": Compaq %s\n", cac_eisa_type[i].ct_typestr); 209 memcpy(&sc->sc_cl, cac_eisa_type[i].ct_linkage, sizeof(sc->sc_cl)); 210 cac_init(sc, intrstr, 0); 211 } 212 213 /* 214 * Linkage specific to EISA boards. 215 */ 216 217 static int 218 cac_eisa_l0_fifo_full(struct cac_softc *sc) 219 { 220 221 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 222 CAC_EISA_CHANNEL_CLEAR) == 0); 223 } 224 225 static void 226 cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 227 { 228 u_int16_t size; 229 230 /* 231 * On these boards, `ccb_hdr.size' is actually for control flags. 232 * Set it to zero and pass the value by means of an I/O port. 233 */ 234 size = le16toh(ccb->ccb_hdr.size) << 2; 235 ccb->ccb_hdr.size = 0; 236 237 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 238 (char *)ccb - (char *)sc->sc_ccbs, 239 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 240 241 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 242 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 243 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 244 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 245 } 246 247 static struct cac_ccb * 248 cac_eisa_l0_completed(struct cac_softc *sc) 249 { 250 struct cac_ccb *ccb; 251 u_int32_t off; 252 u_int8_t status; 253 254 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 255 CAC_EISA_CHANNEL_BUSY) == 0) 256 return (NULL); 257 258 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 259 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 260 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 261 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 262 263 if (off == 0) 264 return (NULL); 265 266 off = (off & ~3) - sc->sc_ccbs_paddr; 267 ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off); 268 269 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 270 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 271 272 ccb->ccb_req.error = status; 273 274 if ((off & 3) != 0 && ccb->ccb_req.error == 0) 275 ccb->ccb_req.error = CAC_RET_CMD_REJECTED; 276 277 return (ccb); 278 } 279 280 static int 281 cac_eisa_l0_intr_pending(struct cac_softc *sc) 282 { 283 284 return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 285 CAC_EISA_CHANNEL_BUSY); 286 } 287 288 static void 289 cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) 290 { 291 292 if (state) { 293 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, 294 ~CAC_EISA_CHANNEL_CLEAR); 295 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, 296 CAC_EISA_CHANNEL_BUSY); 297 cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); 298 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); 299 } else 300 cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); 301 } 302
Indexes created Fri Sep 26 20:09:58 GMT 2025