From patchwork Wed Nov 27 05:36:47 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liguang X-Patchwork-Id: 294488 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 06FC02C0097 for ; Wed, 27 Nov 2013 16:40:49 +1100 (EST) Received: from localhost ([::1]:33961 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VlXri-0006Ev-HR for incoming@patchwork.ozlabs.org; Wed, 27 Nov 2013 00:40:46 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58494) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VlXpq-0003El-13 for qemu-devel@nongnu.org; Wed, 27 Nov 2013 00:38:54 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VlXpj-0002zL-OW for qemu-devel@nongnu.org; Wed, 27 Nov 2013 00:38:49 -0500 Received: from [222.73.24.84] (port=33104 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VlXpi-0002sr-QV for qemu-devel@nongnu.org; Wed, 27 Nov 2013 00:38:43 -0500 X-IronPort-AV: E=Sophos;i="4.93,779,1378828800"; d="scan'208";a="9135269" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 27 Nov 2013 13:35:13 +0800 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id rAR5cUSD019953; Wed, 27 Nov 2013 13:38:39 +0800 Received: from liguang.fnst.cn.fujitsu.com ([10.167.226.22]) by fnstmail02.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2013112713362559-451863 ; Wed, 27 Nov 2013 13:36:25 +0800 From: liguang To: qemu-devel@nongnu.org Date: Wed, 27 Nov 2013 13:36:47 +0800 Message-Id: <1385530609-22741-4-git-send-email-lig.fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1385530609-22741-1-git-send-email-lig.fnst@cn.fujitsu.com> References: <1385530609-22741-1-git-send-email-lig.fnst@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/11/27 13:36:25, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/11/27 13:36:32, Serialize complete at 2013/11/27 13:36:32 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 222.73.24.84 Cc: Peter Maydell , Peter Crosthwaite , liguang Subject: [Qemu-devel] [PATCH v5 3/5] hw/intc: add sunxi interrupt controller device X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: liguang --- default-configs/arm-softmmu.mak | 1 + hw/intc/Makefile.objs | 1 + hw/intc/sunxi-pic.c | 247 +++++++++++++++++++++++++++++++++++++++ include/hw/intc/sunxi-pic.h | 20 +++ 4 files changed, 269 insertions(+), 0 deletions(-) create mode 100644 hw/intc/sunxi-pic.c create mode 100644 include/hw/intc/sunxi-pic.h diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak index 7bf5ad0..bbe00e4 100644 --- a/default-configs/arm-softmmu.mak +++ b/default-configs/arm-softmmu.mak @@ -83,3 +83,4 @@ CONFIG_SDHCI=y CONFIG_INTEGRATOR_DEBUG=y CONFIG_SUNXI_PIT=y +CONFIG_SUNXI_PIC=y diff --git a/hw/intc/Makefile.objs b/hw/intc/Makefile.objs index 47ac442..dad8c43 100644 --- a/hw/intc/Makefile.objs +++ b/hw/intc/Makefile.objs @@ -12,6 +12,7 @@ common-obj-$(CONFIG_IOAPIC) += ioapic_common.o common-obj-$(CONFIG_ARM_GIC) += arm_gic_common.o common-obj-$(CONFIG_ARM_GIC) += arm_gic.o common-obj-$(CONFIG_OPENPIC) += openpic.o +common-obj-$(CONFIG_SUNXI_PIC) += sunxi-pic.o obj-$(CONFIG_APIC) += apic.o apic_common.o obj-$(CONFIG_ARM_GIC_KVM) += arm_gic_kvm.o diff --git a/hw/intc/sunxi-pic.c b/hw/intc/sunxi-pic.c new file mode 100644 index 0000000..5fd86f9 --- /dev/null +++ b/hw/intc/sunxi-pic.c @@ -0,0 +1,247 @@ +/* + * Allwinner sunxi interrupt controller device emulation + * + * Copyright (C) 2013 Li Guang + * Written by Li Guang + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "hw/sysbus.h" +#include "hw/devices.h" +#include "sysemu/sysemu.h" +#include "hw/intc/sunxi-pic.h" + + +typedef struct SunxiPICState { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + MemoryRegion iomem; + qemu_irq parent_fiq; + qemu_irq parent_irq; + + uint32_t vector; + uint32_t base_addr; + uint32_t protect; + uint32_t nmi; + uint32_t irq_pending[SUNXI_PIC_REG_IDX]; + uint32_t fiq_pending[SUNXI_PIC_REG_IDX]; + uint32_t select[SUNXI_PIC_REG_IDX]; + uint32_t enable[SUNXI_PIC_REG_IDX]; + uint32_t mask[SUNXI_PIC_REG_IDX]; + /*priority setting here*/ +} SunxiPICState; + +static void sunxi_pic_update(SunxiPICState *s) +{ + uint8_t i, j; + bool irq = false, fiq = false; + + for (i = 0, j = 0; i < SUNXI_PIC_REG_IDX; i++) { + if (s->irq_pending[i] == 0 && s->fiq_pending[i]) { + continue; + } + for (j = 0; j < 32; j++) { + if (test_bit(j, (void *)&s->mask[i])) { + continue; + } + if (test_bit(j, (void *)&s->irq_pending[i])) { + irq = true; + } + if (test_bit(j, (void *)&s->fiq_pending[i]) && + test_bit(j, (void *)&s->select[i])) { + fiq = true; + } + if (irq || fiq) { + goto out; + } + } + } + +out: + qemu_set_irq(s->parent_irq, irq); + qemu_set_irq(s->parent_fiq, fiq); +} + +static void sunxi_pic_set_irq(void *opaque, int irq, int level) +{ + SunxiPICState *s = opaque; + + if (level) { + set_bit(irq, (void *)&s->irq_pending[irq/32]); + } + sunxi_pic_update(s); +} + +static uint64_t sunxi_pic_read(void *opaque, hwaddr offset, unsigned size) +{ + SunxiPICState *s = opaque; + uint8_t index = (offset & 0xc)/4; + + switch (offset) { + case SUNXI_PIC_VECTOR: + return s->vector; + break; + case SUNXI_PIC_BASE_ADDR: + return s->base_addr; + break; + case SUNXI_PIC_PROTECT: + return s->protect; + break; + case SUNXI_PIC_NMI: + return s->nmi; + break; + case SUNXI_PIC_IRQ_PENDING ... SUNXI_PIC_IRQ_PENDING + 8: + return s->irq_pending[index]; + break; + case SUNXI_PIC_FIQ_PENDING ... SUNXI_PIC_FIQ_PENDING + 8: + return s->fiq_pending[index]; + break; + case SUNXI_PIC_SELECT ... SUNXI_PIC_SELECT + 8: + return s->select[index]; + break; + case SUNXI_PIC_ENABLE ... SUNXI_PIC_ENABLE + 8: + return s->enable[index]; + break; + case SUNXI_PIC_MASK ... SUNXI_PIC_MASK + 8: + return s->mask[index]; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Bad offset 0x%x\n", __func__, (int)offset); + break; + } + + return 0; +} + +static void sunxi_pic_write(void *opaque, hwaddr offset, uint64_t value, + unsigned size) +{ + SunxiPICState *s = opaque; + uint8_t index = (offset & 0xc)/4; + + switch (offset) { + case SUNXI_PIC_VECTOR: + s->vector = value & ~0x3; + break; + case SUNXI_PIC_BASE_ADDR: + s->base_addr = value & ~0x3; + case SUNXI_PIC_PROTECT: + s->protect = value; + break; + case SUNXI_PIC_NMI: + s->nmi = value; + break; + case SUNXI_PIC_IRQ_PENDING ... SUNXI_PIC_IRQ_PENDING + 8: + s->irq_pending[index] &= ~value; + break; + case SUNXI_PIC_FIQ_PENDING ... SUNXI_PIC_FIQ_PENDING + 8: + s->fiq_pending[index] &= ~value; + break; + case SUNXI_PIC_SELECT ... SUNXI_PIC_SELECT + 8: + s->select[index] = value; + break; + case SUNXI_PIC_ENABLE ... SUNXI_PIC_ENABLE + 8: + s->enable[index] = value; + break; + case SUNXI_PIC_MASK ... SUNXI_PIC_MASK + 8: + s->mask[index] = value; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Bad offset 0x%x\n", __func__, (int)offset); + break; + } + + sunxi_pic_update(s); +} + +static const MemoryRegionOps sunxi_pic_ops = { + .read = sunxi_pic_read, + .write = sunxi_pic_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static const VMStateDescription vmstate_sunxi_pic = { + .name = "sunxi.pic", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32(vector, SunxiPICState), + VMSTATE_UINT32(base_addr, SunxiPICState), + VMSTATE_UINT32(protect, SunxiPICState), + VMSTATE_UINT32(nmi, SunxiPICState), + VMSTATE_UINT32_ARRAY(irq_pending, SunxiPICState, SUNXI_PIC_REG_IDX), + VMSTATE_UINT32_ARRAY(fiq_pending, SunxiPICState, SUNXI_PIC_REG_IDX), + VMSTATE_UINT32_ARRAY(enable, SunxiPICState, SUNXI_PIC_REG_IDX), + VMSTATE_UINT32_ARRAY(select, SunxiPICState, SUNXI_PIC_REG_IDX), + VMSTATE_UINT32_ARRAY(mask, SunxiPICState, SUNXI_PIC_REG_IDX), + VMSTATE_END_OF_LIST() + } +}; + +static void sunxi_pic_realize(DeviceState *ds, Error **errp) +{ + SunxiPICState *s = SUNXI_PIC(ds); + SysBusDevice *dev = SYS_BUS_DEVICE(ds); + + qdev_init_gpio_in(DEVICE(dev), sunxi_pic_set_irq, SUNXI_PIC_INT_NR); + sysbus_init_irq(dev, &s->parent_irq); + sysbus_init_irq(dev, &s->parent_fiq); + memory_region_init_io(&s->iomem, OBJECT(s), &sunxi_pic_ops, s, + "sunxi-pic", 0x400); + sysbus_init_mmio(dev, &s->iomem); +} + +static void sunxi_pic_reset(DeviceState *d) +{ + SunxiPICState *s = SUNXI_PIC(d); + uint8_t i; + + s->base_addr = 0; + s->protect = 0; + s->nmi = 0; + s->vector = 0; + for (i = 0; i < SUNXI_PIC_REG_IDX; i++) { + s->irq_pending[i] = 0; + s->fiq_pending[i] = 0; + s->select[i] = 0; + s->enable[i] = 0; + s->mask[i] = 0; + } +} + +static void sunxi_pic_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = sunxi_pic_realize; + dc->reset = sunxi_pic_reset; + dc->desc = "sunxi pic"; + dc->vmsd = &vmstate_sunxi_pic; + } + +static const TypeInfo sunxi_pic_info = { + .name = TYPE_SUNXI_PIC, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SunxiPICState), + .class_init = sunxi_pic_class_init, +}; + +static void sunxi_register_types(void) +{ + type_register_static(&sunxi_pic_info); +} + +type_init(sunxi_register_types); diff --git a/include/hw/intc/sunxi-pic.h b/include/hw/intc/sunxi-pic.h new file mode 100644 index 0000000..b745f1c --- /dev/null +++ b/include/hw/intc/sunxi-pic.h @@ -0,0 +1,20 @@ +#ifndef SUNXI_PIC_H +#define SUNXI_PIC_H + +#define TYPE_SUNXI_PIC "sunxi-pic" +#define SUNXI_PIC(obj) OBJECT_CHECK(SunxiPICState, (obj), TYPE_SUNXI_PIC) + +#define SUNXI_PIC_VECTOR 0 +#define SUNXI_PIC_BASE_ADDR 4 +#define SUNXI_PIC_PROTECT 8 +#define SUNXI_PIC_NMI 0xc +#define SUNXI_PIC_IRQ_PENDING 0x10 +#define SUNXI_PIC_FIQ_PENDING 0x20 +#define SUNXI_PIC_SELECT 0x30 +#define SUNXI_PIC_ENABLE 0x40 +#define SUNXI_PIC_MASK 0x50 + +#define SUNXI_PIC_INT_NR 95 +#define SUNXI_PIC_REG_IDX DIV_ROUND_UP(SUNXI_PIC_INT_NR, 32) + +#endif