1 /* $NetBSD: sa1111.c,v 1.28 2021/08/07 16:18:45 thorpej 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 * TODO: 34 * - introduce bus abstraction to support SA-1101 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: sa1111.c,v 1.28 2021/08/07 16:18:45 thorpej Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/types.h> 43 #include <sys/conf.h> 44 #include <sys/device.h> 45 #include <sys/kernel.h> 46 #include <sys/kmem.h> 47 #include <sys/uio.h> 48 49 #include <sys/bus.h> 50 #include <machine/intr.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 #include "locators.h" 59 60 static int sa1111_print(void *, const char *); 61 62 static void sacc_intr_calculatemasks(struct sacc_softc *); 63 static void sacc_intr_setpolarity(sacc_chipset_tag_t *, int , int); 64 65 #ifdef INTR_DEBUG 66 #define DPRINTF(arg) printf arg 67 #else 68 #define DPRINTF(arg) 69 #endif 70 71 int 72 sacc_probe(device_t parent, cfdata_t match, void *aux) 73 { 74 struct sa11x0_attach_args *sa = aux; 75 bus_space_handle_t ioh; 76 uint32_t skid; 77 78 if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, &ioh)) 79 return 0; 80 81 skid = bus_space_read_4(sa->sa_iot, ioh, SACCSBI_SKID); 82 bus_space_unmap(sa->sa_iot, ioh, sa->sa_size); 83 84 if ((skid & 0xffffff00) != 0x690cc200) 85 return 0; 86 87 return 1; 88 } 89 90 91 int 92 sa1111_search(device_t parent, cfdata_t cf, const int *ldesc, 93 void *aux) 94 { 95 struct sa1111_attach_args aa; 96 97 aa.sa_addr = cf->cf_loc[SACCCF_ADDR]; 98 aa.sa_size = cf->cf_loc[SACCCF_SIZE]; 99 aa.sa_intr = cf->cf_loc[SACCCF_INTR]; 100 #if 0 101 aa.sa_membase = cf->cf_loc[SACCCF_MEMBASE]; 102 aa.sa_memsize = cf->cf_loc[SACCCF_MEMSIZE]; 103 #endif 104 105 if (config_probe(parent, cf, &aa)) 106 config_attach(parent, cf, &aa, sa1111_print, CFARGS_NONE); 107 108 return 0; 109 } 110 111 static int 112 sa1111_print(void *aux, const char *name) 113 { 114 115 return UNCONF; 116 } 117 118 119 void * 120 sacc_intr_establish(sacc_chipset_tag_t *ic, int irq, int type, int level, 121 int (*ih_fun)(void *), void *ih_arg) 122 { 123 int s; 124 struct sacc_softc *sc = (struct sacc_softc *)ic; 125 struct sacc_intrhand **p, *ih; 126 127 ih = kmem_alloc(sizeof *ih, KM_SLEEP); 128 129 if (irq < 0 || irq > SACCIC_LEN || 130 !(type == IST_EDGE_RAISE || type == IST_EDGE_FALL)) 131 panic("sacc_intr_establish: bogus irq or type"); 132 133 if (sc->sc_intrhand[irq] == NULL) { 134 sacc_intr_setpolarity(ic, irq, type); 135 sc->sc_intrtype[irq] = type; 136 } else if (sc->sc_intrtype[irq] != type) 137 /* XXX we should be able to share raising and 138 * falling edge intrs */ 139 panic("sacc_intr_establish: type must be unique"); 140 141 /* install intr handler */ 142 /* map interrupt level to appropriate softinterrupt level */ 143 level = SOFTINT_SERIAL; 144 ih->ih_soft = softint_establish(level, (void (*)(void *)) ih_fun, 145 ih_arg); 146 ih->ih_irq = irq; 147 ih->ih_next = NULL; 148 149 s = splhigh(); 150 for (p = &sc->sc_intrhand[irq]; *p; p = &(*p)->ih_next) 151 continue; 152 153 *p = ih; 154 155 sacc_intr_calculatemasks(sc); 156 splx(s); 157 158 return ih; 159 } 160 161 void 162 sacc_intr_disestablish(sacc_chipset_tag_t *ic, void *arg) 163 { 164 int irq, s; 165 struct sacc_softc *sc = (struct sacc_softc *)ic; 166 struct sacc_intrhand *ih, **p; 167 168 ih = (struct sacc_intrhand *)arg; 169 irq = ih->ih_irq; 170 171 #ifdef DIAGNOSTIC 172 if (irq < 0 || irq > SACCIC_LEN) 173 panic("sacc_intr_disestablish: bogus irq"); 174 #endif 175 176 s = splhigh(); 177 178 for (p = &sc->sc_intrhand[irq];; p = &(*p)->ih_next) { 179 if (*p == NULL) 180 panic("sacc_intr_disestablish: handler not registered"); 181 if (*p == ih) 182 break; 183 } 184 *p = (*p)->ih_next; 185 186 sacc_intr_calculatemasks(sc); 187 splx(s); 188 189 kmem_free(ih, sizeof(*ih)); 190 } 191 192 static void 193 sacc_intr_setpolarity(sacc_chipset_tag_t *ic, int irq, int type) 194 { 195 struct sacc_softc *sc = (struct sacc_softc *)ic; 196 int s; 197 uint32_t pol, mask; 198 int addr; 199 200 if (irq >= 32) { 201 addr = SACCIC_INTPOL1; 202 irq -= 32; 203 } else 204 addr = SACCIC_INTPOL0; 205 206 mask = (1 << irq); 207 208 s = splhigh(); 209 pol = bus_space_read_4(sc->sc_iot, sc->sc_ioh, addr); 210 if (type == IST_EDGE_RAISE) 211 pol &= ~mask; 212 else 213 pol |= mask; 214 bus_space_write_4(sc->sc_iot, sc->sc_ioh, addr, pol); 215 splx(s); 216 } 217 218 static void 219 sacc_intr_calculatemasks(struct sacc_softc *sc) 220 { 221 int irq; 222 223 sc->sc_imask.lo = 0; 224 sc->sc_imask.hi = 0; 225 for (irq = 0; irq < 32; irq++) 226 if (sc->sc_intrhand[irq]) 227 sc->sc_imask.lo |= (1 << irq); 228 for (irq = 0; irq < SACCIC_LEN - 32; irq++) 229 if (sc->sc_intrhand[irq + 32]) 230 sc->sc_imask.hi |= (1 << irq); 231 232 233 /* XXX this should not be done here */ 234 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN0, 235 sc->sc_imask.lo); 236 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN1, 237 sc->sc_imask.hi); 238 DPRINTF(("sacc_intr_calculatemasks: %x %x\n", sc->sc_imask.lo, 239 sc->sc_imask.hi)); 240 } 241
Indexes created Sat Sep 20 22:09:52 GMT 2025