1/* $NetBSD: cac_eisa.c,v 1.20 2009/05/12 12:12:52 cegger 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 2000 Jonathan Lemon 34 * Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net> 35 * All Rights Reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions, and the following disclaimer, 42 * without modification, immediately at the beginning of the file. 43 * 2. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 50 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58 59/* 60 * EISA front-end for cac(4) driver. 61 */ 62 63#include <sys/cdefs.h> 64__KERNEL_RCSID(0, "$NetBSD: cac_eisa.c,v 1.20 2009/05/12 12:12:52 cegger Exp $"); 65 66#include <sys/param.h> 67#include <sys/systm.h> 68#include <sys/device.h> 69 70#include <sys/bus.h> 71#include <sys/intr.h> 72 73#include <dev/eisa/eisavar.h> 74#include <dev/eisa/eisadevs.h> 75 76#include <dev/ic/cacreg.h> 77#include <dev/ic/cacvar.h> 78 79#define CAC_EISA_SLOT_OFFSET 0x0c88 80#define CAC_EISA_IOSIZE 0x0017 81#define CAC_EISA_IOCONF 0x38 82 83static void cac_eisa_attach(device_t, device_t, void *); 84static int cac_eisa_match(device_t, cfdata_t, void *); 85 86static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); 87static int cac_eisa_l0_fifo_full(struct cac_softc *); 88static void cac_eisa_l0_intr_enable(struct cac_softc *, int); 89static int cac_eisa_l0_intr_pending(struct cac_softc *); 90static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); 91 92CFATTACH_DECL(cac_eisa, sizeof(struct cac_softc), 93 cac_eisa_match, cac_eisa_attach, NULL, NULL); 94 95static const struct cac_linkage cac_eisa_l0 = { 96 cac_eisa_l0_completed, 97 cac_eisa_l0_fifo_full, 98 cac_eisa_l0_intr_enable, 99 cac_eisa_l0_intr_pending, 100 cac_eisa_l0_submit 101}; 102 103static struct cac_eisa_type { 104 const char *ct_prodstr; 105 const char *ct_typestr; 106 const struct cac_linkage *ct_linkage; 107} cac_eisa_type[] = { 108 { "CPQ4001", "IDA", &cac_eisa_l0 }, 109 { "CPQ4002", "IDA-2", &cac_eisa_l0 }, 110 { "CPQ4010", "IEAS", &cac_eisa_l0 }, 111 { "CPQ4020", "SMART", &cac_eisa_l0 }, 112 { "CPQ4030", "SMART-2/E", &cac_l0 }, 113}; 114 115static int 116cac_eisa_match(device_t parent, cfdata_t match, 117 void *aux) 118{ 119 struct eisa_attach_args *ea; 120 int i; 121 122 ea = aux; 123 124 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 125 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 126 return (1); 127 128 return (0); 129} 130 131static void 132cac_eisa_attach(device_t parent, device_t self, void *aux) 133{ 134 struct eisa_attach_args *ea; 135 bus_space_handle_t ioh; 136 eisa_chipset_tag_t ec; 137 eisa_intr_handle_t ih; 138 struct cac_softc *sc; 139 bus_space_tag_t iot; 140 const char *intrstr; 141 int irq, i; 142 143 ea = aux; 144 sc = device_private(self); 145 iot = ea->ea_iot; 146 ec = ea->ea_ec; 147 148 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 149 CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { 150 printf("can't map i/o space\n"); 151 return; 152 } 153 154 sc->sc_iot = iot; 155 sc->sc_ioh = ioh; 156 sc->sc_dmat = ea->ea_dmat; 157 158 /* 159 * Map and establish the interrupt. 160 */ 161 switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { 162 case 0x20: 163 irq = 10; 164 break; 165 case 0x10: 166 irq = 11; 167 break; 168 case 0x40: 169 irq = 14; 170 break; 171 case 0x80: 172 irq = 15; 173 break; 174 default: 175 printf("controller on invalid IRQ\n"); 176 return; 177 } 178 179 if (eisa_intr_map(ec, irq, &ih)) { 180 printf("can't map interrupt (%d)\n", irq); 181 return; 182 } 183 184 intrstr = eisa_intr_string(ec, ih); 185 if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 186 cac_intr, sc)) == NULL) { 187 printf("can't establish interrupt"); 188 if (intrstr != NULL) 189 printf(" at %s", intrstr); 190 printf("\n"); 191 return; 192 } 193 194 /* 195 * Print board type and attach to the bus-independent code. 196 */ 197 for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) 198 if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) 199 break; 200 201 printf(": Compaq %s\n", cac_eisa_type[i].ct_typestr); 202 memcpy(&sc->sc_cl, cac_eisa_type[i].ct_linkage, sizeof(sc->sc_cl)); 203 cac_init(sc, intrstr, 0); 204} 205 206/* 207 * Linkage specific to EISA boards. 208 */ 209 210static int 211cac_eisa_l0_fifo_full(struct cac_softc *sc) 212{ 213 214 return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 215 CAC_EISA_CHANNEL_CLEAR) == 0); 216} 217 218static void 219cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) 220{ 221 u_int16_t size; 222 223 /* 224 * On these boards, `ccb_hdr.size' is actually for control flags. 225 * Set it to zero and pass the value by means of an I/O port. 226 */ 227 size = le16toh(ccb->ccb_hdr.size) << 2; 228 ccb->ccb_hdr.size = 0; 229 230 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 231 (char *)ccb - (char *)sc->sc_ccbs, 232 sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 233 234 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 235 cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); 236 cac_outw(sc, CAC_EISAREG_LIST_LEN, size); 237 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); 238} 239 240static struct cac_ccb * 241cac_eisa_l0_completed(struct cac_softc *sc) 242{ 243 struct cac_ccb *ccb; 244 u_int32_t off; 245 u_int8_t status; 246 247 if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & 248 CAC_EISA_CHANNEL_BUSY) == 0) 249 return (NULL); 250 251 cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); 252 off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); 253 status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); 254 cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); 255 256 if (off == 0) 257 return (NULL); 258 259 off = (off & ~3) - sc->sc_ccbs_paddr; 260 ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off); 261 262 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), 263 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 264 265 ccb->ccb_req.error = status; 266 267 if ((off & 3) != 0 && ccb->ccb_req.error == 0) 268 ccb->ccb_req.error = CAC_RET_CMD_REJECTED; 269 270 return (ccb); 271} 272 273static int 274cac_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 281static void 282cac_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