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d=greensocs.com; s=mail; t=1465835271; bh=oCbKS5SRDWFXzkdmCernxV2r0Yk9pfq20ESsh++Ux28=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=y5ljGS86fiaZKR1PpOYHJzh1TvLVkAvo/g0DEbZXkcA27d54xtj9UUSs7xEoBk55/ EzrL3I2Q63o8G1PBGyhXEVeHUA3r0SnvX++HFRw8/Ol6L/3xTES8Jt7tc5gNfIohN+ yQbM/UqoTssWEDJZ39hAlAqseFP5t+/81XNqMwNw= X-Virus-Scanned: amavisd-new at greensocs.com Authentication-Results: gs-01.greensocs.com (amavisd-new); dkim=pass (1024-bit key) header.d=greensocs.com header.b=Pg4DfxNb; dkim=pass (1024-bit key) header.d=greensocs.com header.b=Pg4DfxNb Received: from greensocs.com ([127.0.0.1]) by localhost (gs-01.greensocs.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id opBLxLKYzh2o; Mon, 13 Jun 2016 18:27:49 +0200 (CEST) Received: by greensocs.com (Postfix, from userid 998) id 9DFFE1387701; Mon, 13 Jun 2016 18:27:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=greensocs.com; s=mail; t=1465835269; bh=oCbKS5SRDWFXzkdmCernxV2r0Yk9pfq20ESsh++Ux28=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Pg4DfxNbiKfON3t1fcKq5XeavF+hmGR/PsjYfpzLuQiMEg/imvsgrM2VC5cPrw3W1 FvivcDQFMP6MqXNCRXoGn+j5gE6vYI7zLhEK87xTxDNTbLkkAguL4rvOXA4xnEj2yL G6RwhwkR6qeE0KoU3h6f0jza2D7VhmgEE8pp7yU4= Received: from asus.home (localhost [IPv6:::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: fred.konrad@greensocs.com) by greensocs.com (Postfix) with ESMTPSA id F233613E00D6; Mon, 13 Jun 2016 18:27:48 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=greensocs.com; s=mail; t=1465835269; bh=oCbKS5SRDWFXzkdmCernxV2r0Yk9pfq20ESsh++Ux28=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Pg4DfxNbiKfON3t1fcKq5XeavF+hmGR/PsjYfpzLuQiMEg/imvsgrM2VC5cPrw3W1 FvivcDQFMP6MqXNCRXoGn+j5gE6vYI7zLhEK87xTxDNTbLkkAguL4rvOXA4xnEj2yL G6RwhwkR6qeE0KoU3h6f0jza2D7VhmgEE8pp7yU4= From: fred.konrad@greensocs.com To: qemu-devel@nongnu.org Date: Mon, 13 Jun 2016 18:27:34 +0200 Message-Id: <1465835259-21449-7-git-send-email-fred.konrad@greensocs.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1465835259-21449-1-git-send-email-fred.konrad@greensocs.com> References: <1465835259-21449-1-git-send-email-fred.konrad@greensocs.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 193.104.36.180 Subject: [Qemu-devel] [RFC PATCH 06/11] introduce fixed-clock X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: edgar.iglesias@xilinx.com, peter.maydell@linaro.org, fred.konrad@greensocs.com, mark.burton@greensocs.com, alistair.francis@xilinx.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: KONRAD Frederic This is a fixed clock device. It justs behave as an empty device with a parametrable output rate. Signed-off-by: KONRAD Frederic --- hw/misc/Makefile.objs | 2 + hw/misc/fixed-clock.c | 87 +++++++++++++++++++++++++++++++++++++++++++ include/hw/misc/fixed-clock.h | 30 +++++++++++++++ 3 files changed, 119 insertions(+) create mode 100644 hw/misc/fixed-clock.c create mode 100644 include/hw/misc/fixed-clock.h diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index e504463..e8b8855 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -52,3 +52,5 @@ obj-$(CONFIG_MIPS_ITU) += mips_itu.o obj-$(CONFIG_PVPANIC) += pvpanic.o obj-$(CONFIG_EDU) += edu.o obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o + +obj-y += fixed-clock.o diff --git a/hw/misc/fixed-clock.c b/hw/misc/fixed-clock.c new file mode 100644 index 0000000..c273a91 --- /dev/null +++ b/hw/misc/fixed-clock.c @@ -0,0 +1,87 @@ +/* + * Fixed clock + * + * Copyright (C) 2016 : GreenSocs Ltd + * http://www.greensocs.com/ , email: info@greensocs.com + * + * Frederic Konrad + * + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + */ + +#include "qemu/osdep.h" +#include "hw/qdev.h" +#include "hw/misc/fixed-clock.h" +#include "qemu/qemu-clock.h" +#include "qapi/error.h" + +/* #define DEBUG_FIXED_CLOCK */ + +#ifdef DEBUG_FIXED_CLOCK +#define DPRINTF(fmt, ...) \ +do { printf("fixed-clock: " fmt , ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(fmt, ...) do { } while (0) +#endif + +typedef struct { + DeviceState parent_obj; + + uint32_t rate; + struct qemu_clk out; +} FixedClock; + +static Property fixed_clock_properties[] = { + DEFINE_PROP_UINT32("rate", FixedClock, rate, 0), + DEFINE_PROP_END_OF_LIST() +}; + +static void fixed_clock_realizefn(DeviceState *d, Error **errp) +{ + FixedClock *s = FIXED_CLOCK(d); + + qemu_clk_update_rate(&s->out, s->rate); +} + +static void fixed_clock_instance_init(Object *obj) +{ + FixedClock *s = FIXED_CLOCK(obj); + + object_initialize(&s->out, sizeof(s->out), TYPE_CLOCK); + qemu_clk_attach_to_device(DEVICE(obj), &s->out, "clk_out"); +} + +static void fixed_clock_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = fixed_clock_realizefn; + dc->props = fixed_clock_properties; +} + +static const TypeInfo fixed_clock_info = { + .name = TYPE_FIXED_CLOCK, + .parent = TYPE_DEVICE, + .instance_size = sizeof(FixedClock), + .instance_init = fixed_clock_instance_init, + .class_init = fixed_clock_class_init, +}; + +static void fixed_clock_register_types(void) +{ + type_register_static(&fixed_clock_info); +} + +type_init(fixed_clock_register_types); diff --git a/include/hw/misc/fixed-clock.h b/include/hw/misc/fixed-clock.h new file mode 100644 index 0000000..1376444 --- /dev/null +++ b/include/hw/misc/fixed-clock.h @@ -0,0 +1,30 @@ +/* + * Fixed clock + * + * Copyright (C) 2016 : GreenSocs Ltd + * http://www.greensocs.com/ , email: info@greensocs.com + * + * Frederic Konrad + * + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + */ + +#ifndef FIXED_CLOCK_H +#define FIXED_CLOCK_H + +#define TYPE_FIXED_CLOCK "fixed-clock" +#define FIXED_CLOCK(obj) OBJECT_CHECK(FixedClock, (obj), TYPE_FIXED_CLOCK) + +#endif /* FIXED_CLOCK_H */