1 /* $NetBSD: sacc_hpcarm.c,v 1.4 2005/12/11 12:17:32 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by IWAMOTO Toshihiro. 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 * Platform dependent part for SA11[01]1 companion chip on hpcarm. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: sacc_hpcarm.c,v 1.4 2005/12/11 12:17:32 christos Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/types.h> 49 #include <sys/conf.h> 50 #include <sys/device.h> 51 #include <sys/kernel.h> 52 #include <sys/malloc.h> 53 #include <sys/uio.h> 54 55 #include <machine/bus.h> 56 #include <machine/platid.h> 57 #include <machine/platid_mask.h> 58 59 #include <arm/sa11x0/sa11x0_reg.h> 60 #include <arm/sa11x0/sa11x0_var.h> 61 #include <arm/sa11x0/sa11x0_gpioreg.h> 62 #include <arm/sa11x0/sa1111_reg.h> 63 #include <arm/sa11x0/sa1111_var.h> 64 65 #include "locators.h" 66 67 static void sacc_attach(struct device *, struct device *, void *); 68 static int sacc_intr(void *); 69 70 struct platid_data sacc_platid_table[] = { 71 { &platid_mask_MACH_HP_JORNADA_720, (void *)1 }, 72 { &platid_mask_MACH_HP_JORNADA_720JP, (void *)1 }, 73 { NULL, NULL } 74 }; 75 76 CFATTACH_DECL(sacc, sizeof(struct sacc_softc), 77 sacc_probe, sacc_attach, NULL, NULL); 78 79 #ifdef INTR_DEBUG 80 #define DPRINTF(arg) printf arg 81 #else 82 #define DPRINTF(arg) 83 #endif 84 85 static void 86 sacc_attach(struct device *parent, struct device *self, void *aux) 87 { 88 int i, gpiopin; 89 u_int32_t skid; 90 struct sacc_softc *sc = (struct sacc_softc *)self; 91 struct sa11x0_softc *psc = (struct sa11x0_softc *)parent; 92 struct sa11x0_attach_args *sa = aux; 93 struct platid_data *p; 94 95 printf("\n"); 96 97 sc->sc_iot = sa->sa_iot; 98 sc->sc_piot = psc->sc_iot; 99 sc->sc_gpioh = psc->sc_gpioh; 100 if ((p = platid_search_data(&platid, sacc_platid_table)) == NULL) 101 return; 102 103 gpiopin = (int) p->data; 104 sc->sc_gpiomask = 1 << gpiopin; 105 106 if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, 107 &sc->sc_ioh)) { 108 printf("%s: unable to map registers\n", sc->sc_dev.dv_xname); 109 return; 110 } 111 112 skid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCSBI_SKID); 113 114 printf("%s: SA1111 rev %d.%d\n", sc->sc_dev.dv_xname, 115 (skid & 0xf0) >> 3, skid & 0xf); 116 117 for (i = 0; i < SACCIC_LEN; i++) 118 sc->sc_intrhand[i] = NULL; 119 120 /* initialize SA1111 interrupt controller */ 121 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN0, 0); 122 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN1, 0); 123 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTTSTSEL, 0); 124 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 125 SACCIC_INTSTATCLR0, 0xffffffff); 126 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 127 SACCIC_INTSTATCLR1, 0xffffffff); 128 129 /* connect to SA1110's GPIO intr */ 130 sa11x0_intr_establish(0, gpiopin, 1, IPL_SERIAL, sacc_intr, sc); 131 132 /* 133 * Attach each devices 134 */ 135 config_search_ia(sa1111_search, self, "sacc", NULL); 136 } 137 138 static int 139 sacc_intr(void *arg) 140 { 141 int i; 142 u_int32_t mask; 143 struct sacc_intrvec intstat; 144 struct sacc_softc *sc = arg; 145 struct sacc_intrhand *ih; 146 147 intstat.lo = 148 bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTSTATCLR0); 149 intstat.hi = 150 bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTSTATCLR1); 151 DPRINTF(("sacc_intr_dispatch: %x %x\n", intstat.lo, intstat.hi)); 152 153 /* clear SA1110's GPIO intr status */ 154 bus_space_write_4(sc->sc_piot, sc->sc_gpioh, 155 SAGPIO_EDR, sc->sc_gpiomask); 156 157 for (i = 0, mask = 1; i < 32; i++, mask <<= 1) 158 if (intstat.lo & mask) { 159 /* 160 * Clear intr status before calling intr handlers. 161 * This cause stray interrupts, but clearing 162 * after calling intr handlers cause intr lossage. 163 */ 164 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 165 SACCIC_INTSTATCLR0, 1 << i); 166 167 for (ih = sc->sc_intrhand[i]; ih; ih = ih->ih_next) 168 softintr_schedule(ih->ih_soft); 169 } 170 for (i = 0, mask = 1; i < SACCIC_LEN - 32; i++, mask <<= 1) 171 if (intstat.hi & mask) { 172 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 173 SACCIC_INTSTATCLR1, 1 << i); 174 for (ih = sc->sc_intrhand[i + 32]; ih; ih = ih->ih_next) 175 softintr_schedule(ih->ih_soft); 176 } 177 return 1; 178 } 179