arbus.c revision 1.7.4.3
1 /* $Id: arbus.c,v 1.7.4.3 2006/12/30 20:46:30 yamt Exp $ */ 2 /* 3 * Copyright (c) 2006 Urbana-Champaign Independent Media Center. 4 * Copyright (c) 2006 Garrett D'Amore. 5 * All rights reserved. 6 * 7 * This code was written by Garrett D'Amore for the Champaign-Urbana 8 * Community Wireless Network Project. 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions 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 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 3. All advertising materials mentioning features or use of this 20 * software must display the following acknowledgements: 21 * This product includes software developed by the Urbana-Champaign 22 * Independent Media Center. 23 * This product includes software developed by Garrett D'Amore. 24 * 4. Urbana-Champaign Independent Media Center's name and Garrett 25 * D'Amore's name may not be used to endorse or promote products 26 * derived from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT 29 * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR 30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 31 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT 33 * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT, 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 36 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 37 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 38 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 40 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: arbus.c,v 1.7.4.3 2006/12/30 20:46:30 yamt Exp $"); 45 46 #include "locators.h" 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/device.h> 50 #include <sys/extent.h> 51 #include <sys/malloc.h> 52 53 #define _MIPS_BUS_DMA_PRIVATE 54 #include <machine/bus.h> 55 #include <mips/atheros/include/ar5312reg.h> 56 #include <mips/atheros/include/ar531xvar.h> 57 #include <mips/atheros/include/arbusvar.h> 58 59 static int arbus_match(struct device *, struct cfdata *, void *); 60 static void arbus_attach(struct device *, struct device *, void *); 61 static int arbus_print(void *, const char *); 62 static void arbus_bus_mem_init(bus_space_tag_t, void *); 63 static void arbus_dma_init(struct device *, bus_dma_tag_t); 64 65 struct arbus_intrhand { 66 int ih_cirq; 67 int ih_mirq; 68 void *ih_cookie; 69 }; 70 71 CFATTACH_DECL(arbus, sizeof(struct device), arbus_match, arbus_attach, 72 NULL, NULL); 73 74 struct mips_bus_space arbus_mbst; 75 struct mips_bus_dma_tag arbus_mdt; 76 77 void 78 arbus_init(void) 79 { 80 static int done = 0; 81 if (done) 82 return; 83 done++; 84 85 arbus_bus_mem_init(&arbus_mbst, NULL); 86 arbus_dma_init(NULL, &arbus_mdt); 87 } 88 89 /* this primarily exists so we can get to the console... */ 90 bus_space_tag_t 91 arbus_get_bus_space_tag(void) 92 { 93 arbus_init(); 94 return (&arbus_mbst); 95 } 96 97 bus_dma_tag_t 98 arbus_get_bus_dma_tag(void) 99 { 100 arbus_init(); 101 return (&arbus_mdt); 102 } 103 104 int 105 arbus_match(struct device *parent, struct cfdata *match, void *aux) 106 { 107 108 return 1; 109 } 110 111 void 112 arbus_attach(struct device *parent, struct device *self, void *aux) 113 { 114 struct arbus_attach_args aa; 115 const struct ar531x_device *devices; 116 int i; 117 118 printf("\n"); 119 int locs[ARBUSCF_NLOCS]; 120 121 arbus_init(); 122 123 for (i = 0, devices = ar531x_get_devices(); devices[i].name; i++) { 124 125 aa.aa_name = devices[i].name; 126 aa.aa_size = devices[i].size; 127 aa.aa_dmat = &arbus_mdt; 128 aa.aa_bst = &arbus_mbst; 129 aa.aa_cirq = devices[i].cirq; 130 aa.aa_mirq = devices[i].mirq; 131 aa.aa_addr = devices[i].addr; 132 133 locs[ARBUSCF_ADDR] = aa.aa_addr; 134 135 if (ar531x_enable_device(&devices[i]) != 0) { 136 continue; 137 } 138 139 (void) config_found_sm_loc(self, "arbus", locs, &aa, 140 arbus_print, config_stdsubmatch); 141 } 142 } 143 144 int 145 arbus_print(void *aux, const char *pnp) 146 { 147 struct arbus_attach_args *aa = aux; 148 149 if (pnp) 150 aprint_normal("%s at %s", aa->aa_name, pnp); 151 152 if (aa->aa_addr) 153 aprint_normal(" addr 0x%lx", aa->aa_addr); 154 155 if (aa->aa_cirq >= 0) 156 aprint_normal(" cpu irq %d", aa->aa_cirq); 157 158 if (aa->aa_mirq >= 0) 159 aprint_normal(" misc irq %d", aa->aa_mirq); 160 161 return (UNCONF); 162 } 163 164 void * 165 arbus_intr_establish(int cirq, int mirq, int (*handler)(void *), void *arg) 166 { 167 struct arbus_intrhand *ih; 168 169 ih = malloc(sizeof(*ih), M_DEVBUF, M_NOWAIT); 170 if (ih == NULL) 171 return NULL; 172 173 ih->ih_cirq = ih->ih_mirq = -1; 174 ih->ih_cookie = NULL; 175 176 if (mirq >= 0) { 177 ih->ih_mirq = mirq; 178 ih->ih_cookie = ar531x_misc_intr_establish(mirq, handler, arg); 179 } else if (cirq >= 0) { 180 ih->ih_cirq = cirq; 181 ih->ih_cookie = ar531x_cpu_intr_establish(cirq, handler, arg); 182 } else 183 return ih; 184 185 if (ih->ih_cookie == NULL) { 186 free(ih, M_DEVBUF); 187 return NULL; 188 } 189 return ih; 190 } 191 192 void 193 arbus_intr_disestablish(void *arg) 194 { 195 struct arbus_intrhand *ih = arg; 196 if (ih->ih_mirq >= 0) 197 ar531x_misc_intr_disestablish(ih->ih_cookie); 198 else if (ih->ih_cirq >= 0) 199 ar531x_cpu_intr_disestablish(ih->ih_cookie); 200 free(ih, M_DEVBUF); 201 } 202 203 204 void 205 arbus_dma_init(struct device *sc, bus_dma_tag_t pdt) 206 { 207 bus_dma_tag_t t; 208 209 t = pdt; 210 t->_cookie = sc; 211 t->_wbase = 0; 212 t->_physbase = 0; 213 t->_wsize = MIPS_KSEG1_START - MIPS_KSEG0_START; 214 t->_dmamap_create = _bus_dmamap_create; 215 t->_dmamap_destroy = _bus_dmamap_destroy; 216 t->_dmamap_load = _bus_dmamap_load; 217 t->_dmamap_load_mbuf = _bus_dmamap_load_mbuf; 218 t->_dmamap_load_uio = _bus_dmamap_load_uio; 219 t->_dmamap_load_raw = _bus_dmamap_load_raw; 220 t->_dmamap_unload = _bus_dmamap_unload; 221 t->_dmamap_sync = _bus_dmamap_sync; 222 t->_dmamem_alloc = _bus_dmamem_alloc; 223 t->_dmamem_free = _bus_dmamem_free; 224 t->_dmamem_map = _bus_dmamem_map; 225 t->_dmamem_unmap = _bus_dmamem_unmap; 226 t->_dmamem_mmap = _bus_dmamem_mmap; 227 } 228 229 /* 230 * CPU memory/register stuff 231 */ 232 233 #define CHIP arbus 234 #define CHIP_MEM /* defined */ 235 #define CHIP_W1_BUS_START(v) 0x00000000UL 236 #define CHIP_W1_BUS_END(v) 0x1fffffffUL 237 #define CHIP_W1_SYS_START(v) CHIP_W1_BUS_START(v) 238 #define CHIP_W1_SYS_END(v) CHIP_W1_BUS_END(v) 239 240 #include <mips/mips/bus_space_alignstride_chipdep.c> 241
Indexes created Mon Oct 20 11:09:49 GMT 2025