/* $NetBSD: pic_discovery.c,v 1.8 2017/06/01 02:45:07 chs Exp $ */ /* * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Allegro Networks, Inc., and Wasabi Systems, Inc. * 4. The name of Allegro Networks, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * 5. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND * WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC. * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: pic_discovery.c,v 1.8 2017/06/01 02:45:07 chs Exp $"); #include #include #include #include #include #include #include #include __CTASSERT(sizeof(imask_t) == sizeof(uint64_t)); struct discovery_gpp_pic_ops; struct discovery_pic_ops { struct pic_ops pic; union { uint64_t mask64; uint32_t mask32[2]; } _mask; #define enable_mask _mask.mask64 #define enable_mask_high _mask.mask32[1] #define enable_mask_low _mask.mask32[0] }; struct discovery_gpp_pic_ops { struct pic_ops pic; int gpp_base; }; static void discovery_enable_irq(struct pic_ops *, int, int); static void discovery_disable_irq(struct pic_ops *, int); static int discovery_get_irq(struct pic_ops *, int); static void discovery_ack_irq(struct pic_ops *, int); static void discovery_gpp_enable_irq(struct pic_ops *, int, int); static void discovery_gpp_disable_irq(struct pic_ops *, int); static int discovery_gpp_get_irq(struct pic_ops *, int); static void discovery_gpp_ack_irq(struct pic_ops *, int); struct pic_ops * setup_discovery_pic(void) { struct discovery_pic_ops *discovery; struct pic_ops *pic; discovery = kmem_alloc(sizeof(*discovery), KM_SLEEP); pic = &discovery->pic; pic->pic_numintrs = 64; pic->pic_cookie = (void *)NULL; /* set later */ pic->pic_enable_irq = discovery_enable_irq; pic->pic_reenable_irq = discovery_enable_irq; pic->pic_disable_irq = discovery_disable_irq; pic->pic_get_irq = discovery_get_irq; pic->pic_ack_irq = discovery_ack_irq; pic->pic_establish_irq = dummy_pic_establish_intr; pic->pic_finish_setup = NULL; strcpy(pic->pic_name, "discovery"); pic_add(pic); discovery->enable_mask = 0; return pic; } static void discovery_enable_irq(struct pic_ops *pic, int irq, int type) { struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; discovery->enable_mask |= (1 << irq); discovery_enable_intr(pic->pic_cookie, irq); } static void discovery_disable_irq(struct pic_ops *pic, int irq) { struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; discovery->enable_mask &= ~(1 << irq); discovery_disable_intr(pic->pic_cookie, irq); } static int discovery_get_irq(struct pic_ops *pic, int mode) { struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic; uint32_t cause; int irq, base, msk; cause = discovery_mic_low(pic->pic_cookie) & discovery->enable_mask_low; if (cause) base = 0; else { cause = discovery_mic_high(pic->pic_cookie); cause &= discovery->enable_mask_high; if (!cause) return 255; base = 32; } for (irq = base, msk = 0x00000001; !(cause & msk); irq++, msk <<= 1); return irq; } static void discovery_ack_irq(struct pic_ops *pic, int irq) { /* nothing */ } struct pic_ops * setup_discovery_gpp_pic(void *discovery, int gpp_base) { struct discovery_gpp_pic_ops *discovery_gpp; struct pic_ops *pic; discovery_gpp = kmem_alloc(sizeof(*discovery_gpp), KM_SLEEP); pic = &discovery_gpp->pic; pic->pic_numintrs = 32; pic->pic_cookie = discovery; pic->pic_enable_irq = discovery_gpp_enable_irq; pic->pic_reenable_irq = discovery_gpp_enable_irq; pic->pic_disable_irq = discovery_gpp_disable_irq; pic->pic_get_irq = discovery_gpp_get_irq; pic->pic_ack_irq = discovery_gpp_ack_irq; pic->pic_establish_irq = dummy_pic_establish_intr; pic->pic_finish_setup = NULL; strcpy(pic->pic_name, "discovery_gpp"); pic_add(pic); discovery_gpp->gpp_base = gpp_base; return pic; } static void discovery_gpp_enable_irq(struct pic_ops *pic, int irq, int type) { struct discovery_gpp_pic_ops *discovery_gpp = (struct discovery_gpp_pic_ops *)pic; struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; discovery_gpp_enable_intr(discovery->pic.pic_cookie, discovery_gpp->gpp_base + irq); } static void discovery_gpp_disable_irq(struct pic_ops *pic, int irq) { struct discovery_gpp_pic_ops *discovery_gpp = (struct discovery_gpp_pic_ops *)pic; struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; discovery_gpp_disable_intr(discovery->pic.pic_cookie, discovery_gpp->gpp_base + irq); } static int discovery_gpp_get_irq(struct pic_ops *pic, int mode) { struct discovery_gpp_pic_ops *discovery_gpp = (struct discovery_gpp_pic_ops *)pic; struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; uint32_t cause, mask; int irq, msk, base; cause = discovery_gpp_cause(discovery->pic.pic_cookie); mask = discovery_gpp_mask(discovery->pic.pic_cookie); base = discovery_gpp->gpp_base; cause &= (mask & (0xff << base)); if (!cause) return 255; for (irq = base, msk = (1 << base); !(cause & msk); irq++, msk <<= 1); return irq; } static void discovery_gpp_ack_irq(struct pic_ops *pic, int irq) { struct discovery_gpp_pic_ops *discovery_gpp = (struct discovery_gpp_pic_ops *)pic; struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie; discovery_gpp_clear_cause(discovery->pic.pic_cookie, discovery_gpp->gpp_base + irq); }