sa1111.c revision 1.21
1 /* $NetBSD: sa1111.c,v 1.21 2008/01/08 02:07:52 matt 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 * TODO: 41 * - introduce bus abstraction to support SA-1101 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: sa1111.c,v 1.21 2008/01/08 02:07:52 matt Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/types.h> 50 #include <sys/conf.h> 51 #include <sys/device.h> 52 #include <sys/kernel.h> 53 #include <sys/malloc.h> 54 #include <sys/uio.h> 55 56 #include <machine/bus.h> 57 #include <machine/intr.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 int sa1111_print(void *, const char *); 68 69 static void sacc_intr_calculatemasks(struct sacc_softc *); 70 static void sacc_intr_setpolarity(sacc_chipset_tag_t *, int , int); 71 72 #ifdef INTR_DEBUG 73 #define DPRINTF(arg) printf arg 74 #else 75 #define DPRINTF(arg) 76 #endif 77 78 int 79 sacc_probe(struct device *parent, struct cfdata *match, void *aux) 80 { 81 struct sa11x0_attach_args *sa = aux; 82 bus_space_handle_t ioh; 83 uint32_t skid; 84 85 if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0, &ioh)) 86 return 0; 87 88 skid = bus_space_read_4(sa->sa_iot, ioh, SACCSBI_SKID); 89 bus_space_unmap(sa->sa_iot, ioh, sa->sa_size); 90 91 if ((skid & 0xffffff00) != 0x690cc200) 92 return 0; 93 94 return 1; 95 } 96 97 98 int 99 sa1111_search(struct device *parent, struct cfdata *cf, const int *ldesc, 100 void *aux) 101 { 102 struct sa1111_attach_args aa; 103 104 aa.sa_addr = cf->cf_loc[SACCCF_ADDR]; 105 aa.sa_size = cf->cf_loc[SACCCF_SIZE]; 106 aa.sa_intr = cf->cf_loc[SACCCF_INTR]; 107 #if 0 108 aa.sa_membase = cf->cf_loc[SACCCF_MEMBASE]; 109 aa.sa_memsize = cf->cf_loc[SACCCF_MEMSIZE]; 110 #endif 111 112 if (config_match(parent, cf, &aa) > 0) 113 config_attach(parent, cf, &aa, sa1111_print); 114 115 return 0; 116 } 117 118 static int 119 sa1111_print(void *aux, const char *name) 120 { 121 122 return UNCONF; 123 } 124 125 126 void * 127 sacc_intr_establish(sacc_chipset_tag_t *ic, int irq, int type, int level, 128 int (*ih_fun)(void *), void *ih_arg) 129 { 130 int s; 131 struct sacc_softc *sc = (struct sacc_softc *)ic; 132 struct sacc_intrhand **p, *ih; 133 134 /* no point in sleeping unless someone can free memory. */ 135 ih = malloc(sizeof *ih, M_DEVBUF, cold ? M_NOWAIT : M_WAITOK); 136 if (ih == NULL) 137 panic("sacc_intr_establish: can't malloc handler info"); 138 139 if (irq < 0 || irq > SACCIC_LEN || 140 !(type == IST_EDGE_RAISE || type == IST_EDGE_FALL)) 141 panic("sacc_intr_establish: bogus irq or type"); 142 143 if (sc->sc_intrhand[irq] == NULL) { 144 sacc_intr_setpolarity(ic, irq, type); 145 sc->sc_intrtype[irq] = type; 146 } else if (sc->sc_intrtype[irq] != type) 147 /* XXX we should be able to share raising and 148 * falling edge intrs */ 149 panic("sacc_intr_establish: type must be unique"); 150 151 /* install intr handler */ 152 /* map interrupt level to appropriate softinterrupt level */ 153 level = SOFTINT_SERIAL; 154 ih->ih_soft = softint_establish(level, (void (*)(void *)) ih_fun, 155 ih_arg); 156 ih->ih_irq = irq; 157 ih->ih_next = NULL; 158 159 s = splhigh(); 160 for (p = &sc->sc_intrhand[irq]; *p; p = &(*p)->ih_next) 161 continue; 162 163 *p = ih; 164 165 sacc_intr_calculatemasks(sc); 166 splx(s); 167 168 return ih; 169 } 170 171 void 172 sacc_intr_disestablish(sacc_chipset_tag_t *ic, void *arg) 173 { 174 int irq, s; 175 struct sacc_softc *sc = (struct sacc_softc *)ic; 176 struct sacc_intrhand *ih, **p; 177 178 ih = (struct sacc_intrhand *)arg; 179 irq = ih->ih_irq; 180 181 #ifdef DIAGNOSTIC 182 if (irq < 0 || irq > SACCIC_LEN) 183 panic("sacc_intr_disestablish: bogus irq"); 184 #endif 185 186 s = splhigh(); 187 188 for (p = &sc->sc_intrhand[irq];; p = &(*p)->ih_next) { 189 if (*p == NULL) 190 panic("sacc_intr_disestablish: handler not registered"); 191 if (*p == ih) 192 break; 193 } 194 *p = (*p)->ih_next; 195 196 sacc_intr_calculatemasks(sc); 197 splx(s); 198 199 free(ih, M_DEVBUF); 200 } 201 202 static void 203 sacc_intr_setpolarity(sacc_chipset_tag_t *ic, int irq, int type) 204 { 205 struct sacc_softc *sc = (struct sacc_softc *)ic; 206 int s; 207 uint32_t pol, mask; 208 int addr; 209 210 if (irq >= 32) { 211 addr = SACCIC_INTPOL1; 212 irq -= 32; 213 } else 214 addr = SACCIC_INTPOL0; 215 216 mask = (1 << irq); 217 218 s = splhigh(); 219 pol = bus_space_read_4(sc->sc_iot, sc->sc_ioh, addr); 220 if (type == IST_EDGE_RAISE) 221 pol &= ~mask; 222 else 223 pol |= mask; 224 bus_space_write_4(sc->sc_iot, sc->sc_ioh, addr, pol); 225 splx(s); 226 } 227 228 static void 229 sacc_intr_calculatemasks(struct sacc_softc *sc) 230 { 231 int irq; 232 233 sc->sc_imask.lo = 0; 234 sc->sc_imask.hi = 0; 235 for (irq = 0; irq < 32; irq++) 236 if (sc->sc_intrhand[irq]) 237 sc->sc_imask.lo |= (1 << irq); 238 for (irq = 0; irq < SACCIC_LEN - 32; irq++) 239 if (sc->sc_intrhand[irq + 32]) 240 sc->sc_imask.hi |= (1 << irq); 241 242 243 /* XXX this should not be done here */ 244 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN0, 245 sc->sc_imask.lo); 246 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN1, 247 sc->sc_imask.hi); 248 DPRINTF(("sacc_intr_calculatemasks: %x %x\n", sc->sc_imask.lo, 249 sc->sc_imask.hi)); 250 } 251
Indexes created Tue Sep 30 06:09:59 GMT 2025