fd34ea77eb
kmem_alloc() with KM_SLEEP kmem_zalloc() with KM_SLEEP percpu_alloc() pserialize_create() psref_class_create() all of these paths include an assertion that the allocation has not failed, so callers should not assert that again.
241 lines
7.1 KiB
C
241 lines
7.1 KiB
C
/* $NetBSD: pic_discovery.c,v 1.8 2017/06/01 02:45:07 chs Exp $ */
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/*
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* Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Allegro Networks, Inc., and Wasabi Systems, Inc.
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* 4. The name of Allegro Networks, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* 5. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND
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* WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC.
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pic_discovery.c,v 1.8 2017/06/01 02:45:07 chs Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kmem.h>
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#include <sys/intr.h>
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#include <powerpc/pic/picvar.h>
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#include <dev/marvell/gtvar.h>
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#include <dev/marvell/gtintrreg.h>
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#include <dev/marvell/gtintrvar.h>
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__CTASSERT(sizeof(imask_t) == sizeof(uint64_t));
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struct discovery_gpp_pic_ops;
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struct discovery_pic_ops {
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struct pic_ops pic;
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union {
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uint64_t mask64;
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uint32_t mask32[2];
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} _mask;
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#define enable_mask _mask.mask64
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#define enable_mask_high _mask.mask32[1]
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#define enable_mask_low _mask.mask32[0]
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};
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struct discovery_gpp_pic_ops {
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struct pic_ops pic;
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int gpp_base;
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};
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static void discovery_enable_irq(struct pic_ops *, int, int);
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static void discovery_disable_irq(struct pic_ops *, int);
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static int discovery_get_irq(struct pic_ops *, int);
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static void discovery_ack_irq(struct pic_ops *, int);
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static void discovery_gpp_enable_irq(struct pic_ops *, int, int);
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static void discovery_gpp_disable_irq(struct pic_ops *, int);
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static int discovery_gpp_get_irq(struct pic_ops *, int);
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static void discovery_gpp_ack_irq(struct pic_ops *, int);
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struct pic_ops *
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setup_discovery_pic(void)
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{
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struct discovery_pic_ops *discovery;
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struct pic_ops *pic;
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discovery = kmem_alloc(sizeof(*discovery), KM_SLEEP);
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pic = &discovery->pic;
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pic->pic_numintrs = 64;
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pic->pic_cookie = (void *)NULL; /* set later */
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pic->pic_enable_irq = discovery_enable_irq;
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pic->pic_reenable_irq = discovery_enable_irq;
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pic->pic_disable_irq = discovery_disable_irq;
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pic->pic_get_irq = discovery_get_irq;
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pic->pic_ack_irq = discovery_ack_irq;
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pic->pic_establish_irq = dummy_pic_establish_intr;
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pic->pic_finish_setup = NULL;
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strcpy(pic->pic_name, "discovery");
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pic_add(pic);
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discovery->enable_mask = 0;
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return pic;
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}
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static void
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discovery_enable_irq(struct pic_ops *pic, int irq, int type)
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{
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struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic;
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discovery->enable_mask |= (1 << irq);
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discovery_enable_intr(pic->pic_cookie, irq);
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}
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static void
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discovery_disable_irq(struct pic_ops *pic, int irq)
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{
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struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic;
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discovery->enable_mask &= ~(1 << irq);
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discovery_disable_intr(pic->pic_cookie, irq);
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}
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static int
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discovery_get_irq(struct pic_ops *pic, int mode)
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{
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struct discovery_pic_ops *discovery = (struct discovery_pic_ops *)pic;
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uint32_t cause;
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int irq, base, msk;
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cause = discovery_mic_low(pic->pic_cookie) & discovery->enable_mask_low;
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if (cause)
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base = 0;
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else {
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cause = discovery_mic_high(pic->pic_cookie);
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cause &= discovery->enable_mask_high;
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if (!cause)
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return 255;
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base = 32;
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}
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for (irq = base, msk = 0x00000001; !(cause & msk); irq++, msk <<= 1);
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return irq;
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}
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static void
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discovery_ack_irq(struct pic_ops *pic, int irq)
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{
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/* nothing */
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}
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struct pic_ops *
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setup_discovery_gpp_pic(void *discovery, int gpp_base)
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{
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struct discovery_gpp_pic_ops *discovery_gpp;
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struct pic_ops *pic;
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discovery_gpp = kmem_alloc(sizeof(*discovery_gpp), KM_SLEEP);
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pic = &discovery_gpp->pic;
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pic->pic_numintrs = 32;
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pic->pic_cookie = discovery;
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pic->pic_enable_irq = discovery_gpp_enable_irq;
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pic->pic_reenable_irq = discovery_gpp_enable_irq;
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pic->pic_disable_irq = discovery_gpp_disable_irq;
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pic->pic_get_irq = discovery_gpp_get_irq;
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pic->pic_ack_irq = discovery_gpp_ack_irq;
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pic->pic_establish_irq = dummy_pic_establish_intr;
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pic->pic_finish_setup = NULL;
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strcpy(pic->pic_name, "discovery_gpp");
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pic_add(pic);
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discovery_gpp->gpp_base = gpp_base;
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return pic;
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}
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static void
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discovery_gpp_enable_irq(struct pic_ops *pic, int irq, int type)
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{
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struct discovery_gpp_pic_ops *discovery_gpp =
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(struct discovery_gpp_pic_ops *)pic;
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struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie;
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discovery_gpp_enable_intr(discovery->pic.pic_cookie,
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discovery_gpp->gpp_base + irq);
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}
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static void
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discovery_gpp_disable_irq(struct pic_ops *pic, int irq)
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{
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struct discovery_gpp_pic_ops *discovery_gpp =
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(struct discovery_gpp_pic_ops *)pic;
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struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie;
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discovery_gpp_disable_intr(discovery->pic.pic_cookie,
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discovery_gpp->gpp_base + irq);
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}
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static int
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discovery_gpp_get_irq(struct pic_ops *pic, int mode)
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{
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struct discovery_gpp_pic_ops *discovery_gpp =
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(struct discovery_gpp_pic_ops *)pic;
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struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie;
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uint32_t cause, mask;
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int irq, msk, base;
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cause = discovery_gpp_cause(discovery->pic.pic_cookie);
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mask = discovery_gpp_mask(discovery->pic.pic_cookie);
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base = discovery_gpp->gpp_base;
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cause &= (mask & (0xff << base));
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if (!cause)
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return 255;
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for (irq = base, msk = (1 << base); !(cause & msk); irq++, msk <<= 1);
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return irq;
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}
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static void
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discovery_gpp_ack_irq(struct pic_ops *pic, int irq)
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{
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struct discovery_gpp_pic_ops *discovery_gpp =
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(struct discovery_gpp_pic_ops *)pic;
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struct discovery_pic_ops *discovery = discovery_gpp->pic.pic_cookie;
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discovery_gpp_clear_cause(discovery->pic.pic_cookie,
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discovery_gpp->gpp_base + irq);
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}
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