1 /* $NetBSD: sacc_hpcarm.c,v 1.10 2008/04/28 20:23:21 martin 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 * 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 * Platform dependent part for SA-11[01]1 companion chip on hpcarm. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: sacc_hpcarm.c,v 1.10 2008/04/28 20:23:21 martin Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/types.h> 42 #include <sys/conf.h> 43 #include <sys/device.h> 44 #include <sys/kernel.h> 45 #include <sys/malloc.h> 46 #include <sys/uio.h> 47 48 #include <machine/bus.h> 49 #include <machine/platid.h> 50 #include <machine/platid_mask.h> 51 52 #include <arm/sa11x0/sa11x0_reg.h> 53 #include <arm/sa11x0/sa11x0_var.h> 54 #include <arm/sa11x0/sa11x0_gpioreg.h> 55 #include <arm/sa11x0/sa1111_reg.h> 56 #include <arm/sa11x0/sa1111_var.h> 57 58 static void sacc_attach(struct device *, struct device *, void *); 59 static int sacc_intr(void *); 60 61 struct platid_data sacc_platid_table[] = { 62 { &platid_mask_MACH_HP_JORNADA_7XX, (void *)1 }, 63 { NULL, NULL } 64 }; 65 66 CFATTACH_DECL(sacc, sizeof(struct sacc_softc), 67 sacc_probe, sacc_attach, NULL, NULL); 68 69 #ifdef INTR_DEBUG 70 #define DPRINTF(arg) printf arg 71 #else 72 #define DPRINTF(arg) 73 #endif 74 75 static void 76 sacc_attach(struct device *parent, struct device *self, void *aux) 77 { 78 int i, gpiopin; 79 uint32_t skid; 80 struct sacc_softc *sc = (struct sacc_softc *)self; 81 struct sa11x0_softc *psc = (struct sa11x0_softc *)parent; 82 struct sa11x0_attach_args *sa = aux; 83 struct platid_data *p; 84 85 printf("\n"); 86 87 sc->sc_iot = sa->sa_iot; 88 sc->sc_piot = psc->sc_iot; 89 sc->sc_gpioh = psc->sc_gpioh; 90 91 p = platid_search_data(&platid, sacc_platid_table); 92 if (p == NULL) 93 return; 94 95 gpiopin = (int)p->data; 96 sc->sc_gpiomask = 1 << gpiopin; 97 98 if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, 99 &sc->sc_ioh)) { 100 printf("%s: unable to map registers\n", sc->sc_dev.dv_xname); 101 return; 102 } 103 104 skid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCSBI_SKID); 105 106 printf("%s: SA-1111 rev %d.%d\n", sc->sc_dev.dv_xname, 107 (skid & 0xf0) >> 4, skid & 0xf); 108 109 for (i = 0; i < SACCIC_LEN; i++) 110 sc->sc_intrhand[i] = NULL; 111 112 /* initialize SA-1111 interrupt controller */ 113 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN0, 0); 114 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN1, 0); 115 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTTSTSEL, 0); 116 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 117 SACCIC_INTSTATCLR0, 0xffffffff); 118 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 119 SACCIC_INTSTATCLR1, 0xffffffff); 120 121 /* connect to SA-1110's GPIO intr */ 122 sa11x0_intr_establish(0, gpiopin, 1, IPL_SERIAL, sacc_intr, sc); 123 124 /* attach each devices */ 125 config_search_ia(sa1111_search, self, "sacc", NULL); 126 } 127 128 static int 129 sacc_intr(void *arg) 130 { 131 int i; 132 uint32_t mask; 133 struct sacc_intrvec intstat; 134 struct sacc_softc *sc = arg; 135 struct sacc_intrhand *ih; 136 137 intstat.lo = 138 bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTSTATCLR0); 139 intstat.hi = 140 bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTSTATCLR1); 141 DPRINTF(("sacc_intr: %x %x\n", intstat.lo, intstat.hi)); 142 143 /* clear SA-1110's GPIO intr status */ 144 bus_space_write_4(sc->sc_piot, sc->sc_gpioh, 145 SAGPIO_EDR, sc->sc_gpiomask); 146 147 for (i = 0, mask = 1; i < 32; i++, mask <<= 1) 148 if (intstat.lo & mask) { 149 /* 150 * Clear intr status before calling intr handlers. 151 * This cause stray interrupts, but clearing 152 * after calling intr handlers cause intr lossage. 153 */ 154 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 155 SACCIC_INTSTATCLR0, 1 << i); 156 157 for (ih = sc->sc_intrhand[i]; ih; ih = ih->ih_next) 158 softint_schedule(ih->ih_soft); 159 } 160 for (i = 0, mask = 1; i < SACCIC_LEN - 32; i++, mask <<= 1) 161 if (intstat.hi & mask) { 162 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 163 SACCIC_INTSTATCLR1, 1 << i); 164 for (ih = sc->sc_intrhand[i + 32]; ih; ih = ih->ih_next) 165 softint_schedule(ih->ih_soft); 166 } 167 return 1; 168 } 169