1*a61d9896Smatt /* $NetBSD: pic_discovery.c,v 1.5 2011/06/20 06:22:23 matt Exp $ */ 2d974db0aSgarbled 3d974db0aSgarbled /* 4d974db0aSgarbled * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc. 5d974db0aSgarbled * All rights reserved. 6d974db0aSgarbled * 7d974db0aSgarbled * Redistribution and use in source and binary forms, with or without 8d974db0aSgarbled * modification, are permitted provided that the following conditions 9d974db0aSgarbled * are met: 10d974db0aSgarbled * 1. Redistributions of source code must retain the above copyright 11d974db0aSgarbled * notice, this list of conditions and the following disclaimer. 12d974db0aSgarbled * 2. Redistributions in binary form must reproduce the above copyright 13d974db0aSgarbled * notice, this list of conditions and the following disclaimer in the 14d974db0aSgarbled * documentation and/or other materials provided with the distribution. 15d974db0aSgarbled * 3. All advertising materials mentioning features or use of this software 16d974db0aSgarbled * must display the following acknowledgement: 17d974db0aSgarbled * This product includes software developed for the NetBSD Project by 18d974db0aSgarbled * Allegro Networks, Inc., and Wasabi Systems, Inc. 19d974db0aSgarbled * 4. The name of Allegro Networks, Inc. may not be used to endorse 20d974db0aSgarbled * or promote products derived from this software without specific prior 21d974db0aSgarbled * written permission. 22d974db0aSgarbled * 5. The name of Wasabi Systems, Inc. may not be used to endorse 23d974db0aSgarbled * or promote products derived from this software without specific prior 24d974db0aSgarbled * written permission. 25d974db0aSgarbled * 26d974db0aSgarbled * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND 27d974db0aSgarbled * WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 28d974db0aSgarbled * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 29d974db0aSgarbled * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 30d974db0aSgarbled * IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC. 31d974db0aSgarbled * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32d974db0aSgarbled * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33d974db0aSgarbled * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34d974db0aSgarbled * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35d974db0aSgarbled * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36d974db0aSgarbled * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37d974db0aSgarbled * POSSIBILITY OF SUCH DAMAGE. 38d974db0aSgarbled */ 39d974db0aSgarbled 40d974db0aSgarbled #include <sys/cdefs.h> 41*a61d9896Smatt __KERNEL_RCSID(0, "$NetBSD: pic_discovery.c,v 1.5 2011/06/20 06:22:23 matt Exp $"); 42d974db0aSgarbled 43d974db0aSgarbled #include <sys/param.h> 44a748aedcSkiyohara #include <sys/bus.h> 45d974db0aSgarbled #include <sys/malloc.h> 46bae29c7dSmatt #include <sys/intr.h> 47a748aedcSkiyohara 48d974db0aSgarbled #include <powerpc/pic/picvar.h> 49a748aedcSkiyohara 50d974db0aSgarbled #include <dev/marvell/gtvar.h> 51d974db0aSgarbled #include <dev/marvell/gtintrreg.h> 52a748aedcSkiyohara #include <dev/marvell/gtintrvar.h> 53d974db0aSgarbled 54d974db0aSgarbled 55*a61d9896Smatt __CTASSERT(sizeof(imask_t) == sizeof(uint64_t)); 56*a61d9896Smatt 57a748aedcSkiyohara struct discovery_gpp_pic_ops; 58d974db0aSgarbled 59d974db0aSgarbled struct discovery_pic_ops { 60a748aedcSkiyohara struct pic_ops pic; 61a748aedcSkiyohara union { 62a748aedcSkiyohara uint64_t mask64; 63a748aedcSkiyohara uint32_t mask32[2]; 64a748aedcSkiyohara } _mask; 65a748aedcSkiyohara #define enable_mask _mask.mask64 66a748aedcSkiyohara #define enable_mask_high _mask.mask32[1] 67a748aedcSkiyohara #define enable_mask_low _mask.mask32[0] 68a748aedcSkiyohara }; 69a748aedcSkiyohara struct discovery_gpp_pic_ops { 70a748aedcSkiyohara struct pic_ops pic; 71a748aedcSkiyohara 72a748aedcSkiyohara int gpp_base; 73d974db0aSgarbled }; 74d974db0aSgarbled 75d974db0aSgarbled 76a748aedcSkiyohara static void discovery_enable_irq(struct pic_ops *, int, int); 77a748aedcSkiyohara static void discovery_disable_irq(struct pic_ops *, int); 78a748aedcSkiyohara static int discovery_get_irq(struct pic_ops *, int); 79a748aedcSkiyohara static void discovery_ack_irq(struct pic_ops *, int); 80a748aedcSkiyohara 81a748aedcSkiyohara static void discovery_gpp_enable_irq(struct pic_ops *, int, int); 82a748aedcSkiyohara static void discovery_gpp_disable_irq(struct pic_ops *, int); 83a748aedcSkiyohara static int discovery_gpp_get_irq(struct pic_ops *, int); 84a748aedcSkiyohara static void discovery_gpp_ack_irq(struct pic_ops *, int); 85a748aedcSkiyohara 86a748aedcSkiyohara 87a748aedcSkiyohara struct pic_ops * 88a748aedcSkiyohara setup_discovery_pic() 89d974db0aSgarbled { 90a748aedcSkiyohara struct discovery_pic_ops *discovery; 91a748aedcSkiyohara struct pic_ops *pic; 92d974db0aSgarbled 93a748aedcSkiyohara discovery = 94a748aedcSkiyohara malloc(sizeof(struct discovery_pic_ops), M_DEVBUF, M_NOWAIT); 95a748aedcSkiyohara KASSERT(discovery != NULL); 96d974db0aSgarbled 97a748aedcSkiyohara pic = &discovery->pic; 98a748aedcSkiyohara pic->pic_numintrs = 64; 99a748aedcSkiyohara pic->pic_cookie = (void *)NULL; /* set later */ 100a748aedcSkiyohara pic->pic_enable_irq = discovery_enable_irq; 101a748aedcSkiyohara pic->pic_reenable_irq = discovery_enable_irq; 102a748aedcSkiyohara pic->pic_disable_irq = discovery_disable_irq; 103a748aedcSkiyohara pic->pic_get_irq = discovery_get_irq; 104a748aedcSkiyohara pic->pic_ack_irq = discovery_ack_irq; 105a748aedcSkiyohara pic->pic_establish_irq = dummy_pic_establish_intr; 106a748aedcSkiyohara pic->pic_finish_setup = NULL; 107a748aedcSkiyohara strcpy(pic->pic_name, "discovery"); 108a748aedcSkiyohara pic_add(pic); 109d974db0aSgarbled 110a748aedcSkiyohara discovery->enable_mask = 0; 111d974db0aSgarbled 112a748aedcSkiyohara return pic; 113d974db0aSgarbled } 114d974db0aSgarbled 115d974db0aSgarbled static void 116d974db0aSgarbled discovery_enable_irq(struct pic_ops *pic, int irq, int type) 117d974db0aSgarbled { 118a748aedcSkiyohara struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; 119d974db0aSgarbled 120a748aedcSkiyohara discovery->enable_mask |= (1 << irq); 121a748aedcSkiyohara discovery_enable_intr(pic->pic_cookie, irq); 122d974db0aSgarbled } 123d974db0aSgarbled 124d974db0aSgarbled static void 125d974db0aSgarbled discovery_disable_irq(struct pic_ops *pic, int irq) 126d974db0aSgarbled { 127a748aedcSkiyohara struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; 128d974db0aSgarbled 129a748aedcSkiyohara discovery->enable_mask &= ~(1 << irq); 130a748aedcSkiyohara discovery_disable_intr(pic->pic_cookie, irq); 131d974db0aSgarbled } 132a748aedcSkiyohara 133a748aedcSkiyohara static int 134a748aedcSkiyohara discovery_get_irq(struct pic_ops *pic, int mode) 135a748aedcSkiyohara { 136a748aedcSkiyohara struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; 137a748aedcSkiyohara uint32_t cause; 138a748aedcSkiyohara int irq, base, msk; 139a748aedcSkiyohara 140a748aedcSkiyohara cause = discovery_mic_low(pic->pic_cookie) & discovery->enable_mask_low; 141a748aedcSkiyohara if (cause) 142a748aedcSkiyohara base = 0; 143a748aedcSkiyohara else { 144a748aedcSkiyohara cause = discovery_mic_high(pic->pic_cookie); 145a748aedcSkiyohara cause &= discovery->enable_mask_high; 146a748aedcSkiyohara if (!cause) 147a748aedcSkiyohara return 255; 148a748aedcSkiyohara base = 32; 149a748aedcSkiyohara } 150a748aedcSkiyohara for (irq = base, msk = 0x00000001; !(cause & msk); irq++, msk <<= 1); 151a748aedcSkiyohara 152a748aedcSkiyohara return irq; 153d974db0aSgarbled } 154d974db0aSgarbled 155d974db0aSgarbled static void 156d974db0aSgarbled discovery_ack_irq(struct pic_ops *pic, int irq) 157d974db0aSgarbled { 158a748aedcSkiyohara 159a748aedcSkiyohara /* nothing */ 160d974db0aSgarbled } 161d974db0aSgarbled 162a748aedcSkiyohara 163a748aedcSkiyohara struct pic_ops * 164a748aedcSkiyohara setup_discovery_gpp_pic(void *discovery, int gpp_base) 165d974db0aSgarbled { 166a748aedcSkiyohara struct discovery_gpp_pic_ops *discovery_gpp; 167a748aedcSkiyohara struct pic_ops *pic; 168d974db0aSgarbled 169a748aedcSkiyohara discovery_gpp = 170a748aedcSkiyohara malloc(sizeof(struct discovery_gpp_pic_ops), M_DEVBUF, M_NOWAIT); 171a748aedcSkiyohara KASSERT(discovery_gpp != NULL); 172d974db0aSgarbled 173a748aedcSkiyohara pic = &discovery_gpp->pic; 174a748aedcSkiyohara pic->pic_numintrs = 32; 175a748aedcSkiyohara pic->pic_cookie = discovery; 176a748aedcSkiyohara pic->pic_enable_irq = discovery_gpp_enable_irq; 177a748aedcSkiyohara pic->pic_reenable_irq = discovery_gpp_enable_irq; 178a748aedcSkiyohara pic->pic_disable_irq = discovery_gpp_disable_irq; 179a748aedcSkiyohara pic->pic_get_irq = discovery_gpp_get_irq; 180a748aedcSkiyohara pic->pic_ack_irq = discovery_gpp_ack_irq; 181a748aedcSkiyohara pic->pic_establish_irq = dummy_pic_establish_intr; 182a748aedcSkiyohara pic->pic_finish_setup = NULL; 183a748aedcSkiyohara strcpy(pic->pic_name, "discovery_gpp"); 184a748aedcSkiyohara pic_add(pic); 185d974db0aSgarbled 186a748aedcSkiyohara discovery_gpp->gpp_base = gpp_base; 187d974db0aSgarbled 188a748aedcSkiyohara return pic; 189a748aedcSkiyohara } 190a748aedcSkiyohara 191a748aedcSkiyohara static void 192a748aedcSkiyohara discovery_gpp_enable_irq(struct pic_ops *pic, int irq, int type) 193a748aedcSkiyohara { 194a748aedcSkiyohara struct discovery_gpp_pic_ops *discovery_gpp = 195a748aedcSkiyohara (struct discovery_gpp_pic_ops *)pic; 196a748aedcSkiyohara struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 197a748aedcSkiyohara 198a748aedcSkiyohara discovery_gpp_enable_intr(discovery->pic.pic_cookie, 199a748aedcSkiyohara discovery_gpp->gpp_base + irq); 200a748aedcSkiyohara } 201a748aedcSkiyohara 202a748aedcSkiyohara static void 203a748aedcSkiyohara discovery_gpp_disable_irq(struct pic_ops *pic, int irq) 204a748aedcSkiyohara { 205a748aedcSkiyohara struct discovery_gpp_pic_ops *discovery_gpp = 206a748aedcSkiyohara (struct discovery_gpp_pic_ops *)pic; 207a748aedcSkiyohara struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 208a748aedcSkiyohara 209a748aedcSkiyohara discovery_gpp_disable_intr(discovery->pic.pic_cookie, 210a748aedcSkiyohara discovery_gpp->gpp_base + irq); 211a748aedcSkiyohara } 212a748aedcSkiyohara 213a748aedcSkiyohara static int 214a748aedcSkiyohara discovery_gpp_get_irq(struct pic_ops *pic, int mode) 215a748aedcSkiyohara { 216a748aedcSkiyohara struct discovery_gpp_pic_ops *discovery_gpp = 217a748aedcSkiyohara (struct discovery_gpp_pic_ops *)pic; 218a748aedcSkiyohara struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 219a748aedcSkiyohara uint32_t cause, mask; 220a748aedcSkiyohara int irq, msk, base; 221a748aedcSkiyohara 222a748aedcSkiyohara cause = discovery_gpp_cause(discovery->pic.pic_cookie); 223a748aedcSkiyohara mask = discovery_gpp_mask(discovery->pic.pic_cookie); 224a748aedcSkiyohara 225a748aedcSkiyohara base = discovery_gpp->gpp_base; 226a748aedcSkiyohara cause &= (mask & (0xff << base)); 227a748aedcSkiyohara if (!cause) 228a748aedcSkiyohara return 255; 229a748aedcSkiyohara 230a748aedcSkiyohara for (irq = base, msk = (1 << base); !(cause & msk); irq++, msk <<= 1); 231a748aedcSkiyohara 232a748aedcSkiyohara return irq; 233a748aedcSkiyohara } 234a748aedcSkiyohara 235a748aedcSkiyohara static void 236a748aedcSkiyohara discovery_gpp_ack_irq(struct pic_ops *pic, int irq) 237a748aedcSkiyohara { 238a748aedcSkiyohara struct discovery_gpp_pic_ops *discovery_gpp = 239a748aedcSkiyohara (struct discovery_gpp_pic_ops *)pic; 240a748aedcSkiyohara struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; 241a748aedcSkiyohara 242a748aedcSkiyohara discovery_gpp_clear_cause(discovery->pic.pic_cookie, 243a748aedcSkiyohara discovery_gpp->gpp_base + irq); 244d974db0aSgarbled } 245