1 /* $Id: arbus.c,v 1.17 2021/08/07 16:18:58 thorpej 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 1.17 2021/08/07 16:18:58 thorpej Exp $"); 45 46 #include "locators.h" 47 #define _MIPS_BUS_DMA_PRIVATE 48 49 #include <sys/param.h> 50 #include <sys/bus.h> 51 #include <sys/device.h> 52 #include <sys/extent.h> 53 #include <sys/kmem.h> 54 #include <sys/systm.h> 55 56 #include <mips/atheros/include/platform.h> 57 #include <mips/atheros/include/arbusvar.h> 58 59 static int arbus_match(device_t, cfdata_t, void *); 60 static void arbus_attach(device_t, device_t, void *); 61 static int arbus_print(void *, const char *); 62 static void arbus_bus_mem_init(bus_space_tag_t, void *); 63 64 struct arbus_intrhand { 65 int ih_cirq; 66 int ih_mirq; 67 void *ih_cookie; 68 }; 69 70 CFATTACH_DECL_NEW(arbus, 0, arbus_match, arbus_attach, NULL, NULL); 71 72 struct mips_bus_space arbus_mbst; 73 #if _BYTE_ORDER == _BIG_ENDIAN 74 struct mips_bus_space arbus_mbst_le; 75 #endif 76 struct mips_bus_dma_tag arbus_mdt = { 77 ._dmamap_ops = _BUS_DMAMAP_OPS_INITIALIZER, 78 ._dmamem_ops = _BUS_DMAMEM_OPS_INITIALIZER, 79 ._dmatag_ops = _BUS_DMATAG_OPS_INITIALIZER, 80 }; 81 82 void 83 arbus_init(void) 84 { 85 static bool done = false; 86 if (done) 87 return; 88 done = true; 89 90 arbus_bus_mem_init(&arbus_mbst, NULL); 91 #if _BYTE_ORDER == _BIG_ENDIAN 92 arbusle_bus_mem_init(&arbus_mbst_le, NULL); 93 #endif 94 } 95 96 /* this primarily exists so we can get to the console... */ 97 bus_space_tag_t 98 arbus_get_bus_space_tag(void) 99 { 100 arbus_init(); 101 return (&arbus_mbst); 102 } 103 104 bus_dma_tag_t 105 arbus_get_bus_dma_tag(void) 106 { 107 arbus_init(); 108 return (&arbus_mdt); 109 } 110 111 int 112 arbus_match(device_t parent, cfdata_t match, void *aux) 113 { 114 115 return 1; 116 } 117 118 void 119 arbus_attach(device_t parent, device_t self, void *aux) 120 { 121 aprint_normal("\n"); 122 123 arbus_init(); 124 125 for (const struct atheros_device *adv = platformsw->apsw_devices; 126 adv->adv_name; 127 adv++) { 128 struct arbus_attach_args aa; 129 aa.aa_name = adv->adv_name; 130 aa.aa_addr = adv->adv_addr; 131 aa.aa_size = adv->adv_size; 132 aa.aa_dmat = &arbus_mdt; 133 aa.aa_bst = &arbus_mbst; 134 #if _BYTE_ORDER == _BIG_ENDIAN 135 aa.aa_bst_le = &arbus_mbst_le; 136 #else 137 aa.aa_bst_le = &arbus_mbst; 138 #endif 139 aa.aa_cirq = adv->adv_cirq; 140 aa.aa_mirq = adv->adv_mirq; 141 142 const int locs[ARBUSCF_NLOCS] = { 143 [ARBUSCF_ADDR] = aa.aa_addr, 144 }; 145 146 if (atheros_enable_device(adv) != 0) { 147 continue; 148 } 149 150 config_found(self, &aa, arbus_print, 151 CFARGS(.submatch = config_stdsubmatch, 152 .locators = locs)); 153 } 154 } 155 156 int 157 arbus_print(void *aux, const char *pnp) 158 { 159 struct arbus_attach_args *aa = aux; 160 161 if (pnp) 162 aprint_normal("%s at %s", aa->aa_name, pnp); 163 164 if (aa->aa_addr) 165 aprint_normal(" addr 0x%" PRIxBUSADDR, aa->aa_addr); 166 167 if (aa->aa_cirq >= 0) 168 aprint_normal(" cpu irq %d", aa->aa_cirq); 169 170 if (aa->aa_mirq >= 0) 171 aprint_normal(" misc irq %d", aa->aa_mirq); 172 173 return (UNCONF); 174 } 175 176 void * 177 arbus_intr_establish(int cirq, int mirq, int (*handler)(void *), void *arg) 178 { 179 180 struct arbus_intrhand * const ih = kmem_zalloc(sizeof(*ih), KM_NOSLEEP); 181 if (ih == NULL) 182 return NULL; 183 184 ih->ih_cirq = ih->ih_mirq = -1; 185 ih->ih_cookie = NULL; 186 187 if (mirq >= 0) { 188 ih->ih_mirq = mirq; 189 ih->ih_cookie = atheros_misc_intr_establish(mirq, handler, arg); 190 } else if (cirq >= 0) { 191 ih->ih_cirq = cirq; 192 ih->ih_cookie = atheros_cpu_intr_establish(cirq, handler, arg); 193 } else 194 return ih; 195 196 if (ih->ih_cookie == NULL) { 197 kmem_free(ih, sizeof(*ih)); 198 return NULL; 199 } 200 return ih; 201 } 202 203 void 204 arbus_intr_disestablish(void *arg) 205 { 206 struct arbus_intrhand * const ih = arg; 207 if (ih->ih_mirq >= 0) 208 atheros_misc_intr_disestablish(ih->ih_cookie); 209 else if (ih->ih_cirq >= 0) 210 atheros_cpu_intr_disestablish(ih->ih_cookie); 211 kmem_free(ih, sizeof(*ih)); 212 } 213 214 /* 215 * CPU memory/register stuff 216 */ 217 218 #define CHIP arbus 219 #define CHIP_MEM /* defined */ 220 #define CHIP_W1_BUS_START(v) 0x00000000UL 221 #define CHIP_W1_BUS_END(v) 0x1fffffffUL 222 #define CHIP_W1_SYS_START(v) CHIP_W1_BUS_START(v) 223 #define CHIP_W1_SYS_END(v) CHIP_W1_BUS_END(v) 224 225 #include <mips/mips/bus_space_alignstride_chipdep.c> 226
Indexes created Sat Sep 20 22:09:52 GMT 2025