pic_discovery.c revision 1.3
1 /* $NetBSD: pic_discovery.c,v 1.3 2010/04/28 13:51:55 kiyohara Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the NetBSD Project by 18 * Allegro Networks, Inc., and Wasabi Systems, Inc. 19 * 4. The name of Allegro Networks, Inc. may not be used to endorse 20 * or promote products derived from this software without specific prior 21 * written permission. 22 * 5. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND 27 * WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 28 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 29 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 30 * IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC. 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: pic_discovery.c,v 1.3 2010/04/28 13:51:55 kiyohara Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/bus.h> 45 #include <sys/malloc.h> 46 47 #include <machine/intr.h> 48 49 #include <powerpc/pic/picvar.h> 50 51 #include <dev/marvell/gtvar.h> 52 #include <dev/marvell/gtintrreg.h> 53 #include <dev/marvell/gtintrvar.h> 54 55 56 struct discovery_gpp_pic_ops; 57 58 struct discovery_pic_ops { 59 struct pic_ops pic; 60 union { 61 uint64_t mask64; 62 uint32_t mask32[2]; 63 } _mask; 64 #define enable_mask _mask.mask64 65 #define enable_mask_high _mask.mask32[1] 66 #define enable_mask_low _mask.mask32[0] 67 }; 68 struct discovery_gpp_pic_ops { 69 struct pic_ops pic; 70 71 int gpp_base; 72 }; 73 74 75 static void discovery_enable_irq(struct pic_ops *, int, int); 76 static void discovery_disable_irq(struct pic_ops *, int); 77 static int discovery_get_irq(struct pic_ops *, int); 78 static void discovery_ack_irq(struct pic_ops *, int); 79 80 static void discovery_gpp_enable_irq(struct pic_ops *, int, int); 81 static void discovery_gpp_disable_irq(struct pic_ops *, int); 82 static int discovery_gpp_get_irq(struct pic_ops *, int); 83 static void discovery_gpp_ack_irq(struct pic_ops *, int); 84 85 86 struct pic_ops * 87 setup_discovery_pic() 88 { 89 struct discovery_pic_ops *discovery; 90 struct pic_ops *pic; 91 92 discovery = 93 malloc(sizeof(struct discovery_pic_ops), M_DEVBUF, M_NOWAIT); 94 KASSERT(discovery != NULL); 95 96 pic = &discovery->pic; 97 pic->pic_numintrs = 64; 98 pic->pic_cookie = (void *)NULL; /* set later */ 99 pic->pic_enable_irq = discovery_enable_irq; 100 pic->pic_reenable_irq = discovery_enable_irq; 101 pic->pic_disable_irq = discovery_disable_irq; 102 pic->pic_get_irq = discovery_get_irq; 103 pic->pic_ack_irq = discovery_ack_irq; 104 pic->pic_establish_irq = dummy_pic_establish_intr; 105 pic->pic_finish_setup = NULL; 106 strcpy(pic->pic_name, "discovery"); 107 pic_add(pic); 108 109 discovery->enable_mask = 0; 110 111 return pic; 112 } 113 114 static void 115 discovery_enable_irq(struct pic_ops *pic, int irq, int type) 116 { 117 struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; 118 119 discovery->enable_mask |= (1 << irq); 120 discovery_enable_intr(pic->pic_cookie, irq); 121 } 122 123 static void 124 discovery_disable_irq(struct pic_ops *pic, int irq) 125 { 126 struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; 127 128 discovery->enable_mask &= ~(1 << irq); 129 discovery_disable_intr(pic->pic_cookie, irq); 130 } 131 132 static int 133 discovery_get_irq(struct pic_ops *pic, int mode) 134 { 135 struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; 136 uint32_t cause; 137 int irq, base, msk; 138 139 cause = discovery_mic_low(pic->pic_cookie) & discovery->enable_mask_low; 140 if (cause) 141 base = 0; 142 else { 143 cause = discovery_mic_high(pic->pic_cookie); 144 cause &= discovery->enable_mask_high; 145 if (!cause) 146 return 255; 147 base = 32; 148 } 149 for (irq = base, msk = 0x00000001; !(cause & msk); irq++, msk <<= 1); 150 151 return irq; 152 } 153 154 static void 155 discovery_ack_irq(struct pic_ops *pic, int irq) 156 { 157 158 /* nothing */ 159 } 160 161 162 struct pic_ops * 163 setup_discovery_gpp_pic(void *discovery, int gpp_base) 164 { 165 struct discovery_gpp_pic_ops *discovery_gpp; 166 struct pic_ops *pic; 167 168 discovery_gpp = 169 malloc(sizeof(struct discovery_gpp_pic_ops), M_DEVBUF, M_NOWAIT); 170 KASSERT(discovery_gpp != NULL); 171 172 pic = &discovery_gpp->pic; 173 pic->pic_numintrs = 32; 174 pic->pic_cookie = discovery; 175 pic->pic_enable_irq = discovery_gpp_enable_irq; 176 pic->pic_reenable_irq = discovery_gpp_enable_irq; 177 pic->pic_disable_irq = discovery_gpp_disable_irq; 178 pic->pic_get_irq = discovery_gpp_get_irq; 179 pic->pic_ack_irq = discovery_gpp_ack_irq; 180 pic->pic_establish_irq = dummy_pic_establish_intr; 181 pic->pic_finish_setup = NULL; 182 strcpy(pic->pic_name, "discovery_gpp"); 183 pic_add(pic); 184 185 discovery_gpp->gpp_base = gpp_base; 186 187 return pic; 188 } 189 190 static void 191 discovery_gpp_enable_irq(struct pic_ops *pic, int irq, int type) 192 { 193 struct discovery_gpp_pic_ops *discovery_gpp = 194 (struct discovery_gpp_pic_ops *)pic; 195 struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 196 197 discovery_gpp_enable_intr(discovery->pic.pic_cookie, 198 discovery_gpp->gpp_base + irq); 199 } 200 201 static void 202 discovery_gpp_disable_irq(struct pic_ops *pic, int irq) 203 { 204 struct discovery_gpp_pic_ops *discovery_gpp = 205 (struct discovery_gpp_pic_ops *)pic; 206 struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 207 208 discovery_gpp_disable_intr(discovery->pic.pic_cookie, 209 discovery_gpp->gpp_base + irq); 210 } 211 212 static int 213 discovery_gpp_get_irq(struct pic_ops *pic, int mode) 214 { 215 struct discovery_gpp_pic_ops *discovery_gpp = 216 (struct discovery_gpp_pic_ops *)pic; 217 struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 218 uint32_t cause, mask; 219 int irq, msk, base; 220 221 cause = discovery_gpp_cause(discovery->pic.pic_cookie); 222 mask = discovery_gpp_mask(discovery->pic.pic_cookie); 223 224 base = discovery_gpp->gpp_base; 225 cause &= (mask & (0xff << base)); 226 if (!cause) 227 return 255; 228 229 for (irq = base, msk = (1 << base); !(cause & msk); irq++, msk <<= 1); 230 231 return irq; 232 } 233 234 static void 235 discovery_gpp_ack_irq(struct pic_ops *pic, int irq) 236 { 237 struct discovery_gpp_pic_ops *discovery_gpp = 238 (struct discovery_gpp_pic_ops *)pic; 239 struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 240 241 discovery_gpp_clear_cause(discovery->pic.pic_cookie, 242 discovery_gpp->gpp_base + irq); 243 } 244
Indexes created Tue Sep 30 11:09:46 GMT 2025