From nobody Mon Feb 9 07:23:01 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1500317874818134.317894560122; Mon, 17 Jul 2017 11:57:54 -0700 (PDT) Received: from localhost ([::1]:52044 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXBDN-0000lO-BH for importer@patchew.org; Mon, 17 Jul 2017 14:57:53 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34463) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXB6u-0003Lr-CS for qemu-devel@nongnu.org; Mon, 17 Jul 2017 14:51:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dXB6t-0003lI-6E for qemu-devel@nongnu.org; Mon, 17 Jul 2017 14:51:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51900) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dXB6s-0003kf-Ta for qemu-devel@nongnu.org; Mon, 17 Jul 2017 14:51:11 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C7D25356E4; Mon, 17 Jul 2017 18:51:09 +0000 (UTC) Received: from localhost (ovpn-116-61.gru2.redhat.com [10.97.116.61]) by smtp.corp.redhat.com (Postfix) with ESMTP id 12DAA60F8A; Mon, 17 Jul 2017 18:51:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com C7D25356E4 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=ehabkost@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com C7D25356E4 From: Eduardo Habkost To: Peter Maydell Date: Mon, 17 Jul 2017 15:50:44 -0300 Message-Id: <20170717185051.18740-9-ehabkost@redhat.com> In-Reply-To: <20170717185051.18740-1-ehabkost@redhat.com> References: <20170717185051.18740-1-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Mon, 17 Jul 2017 18:51:09 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 08/15] fw_cfg: move qdev_init_nofail() from fw_cfg_init1() to callers 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: Mark Cave-Ayland , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Mark Cave-Ayland When looking to instantiate a TYPE_FW_CFG_MEM or TYPE_FW_CFG_IO device to be able to wire it up differently, it is much more convenient for the caller to instantiate the device and have the fw_cfg default files already preloaded during realize. Move fw_cfg_init1() to the end of both the fw_cfg_mem_realize() and fw_cfg_io_realize() functions so it no longer needs to be called manually when instantiating the device, and also rename it to fw_cfg_common_realize() which better describes its new purpose. Since it is now the responsibility of the machine to wire up the fw_cfg dev= ice it is necessary to introduce a object_property_add_child() call into fw_cfg_init_io() and fw_cfg_init_mem() to link the fw_cfg device to the root machine object as before. Finally with the previous change to fw_cfg_find() we can now remove the assert() preventing multiple fw_cfg devices being instantiated and replace them with a simple call to fw_cfg_find() at realize time instead. This allo= ws us to remove FW_CFG_NAME and FW_CFG_PATH since they are no longer required. Signed-off-by: Mark Cave-Ayland Reviewed-by: Igor Mammedov Message-Id: <1500025208-14827-3-git-send-email-mark.cave-ayland@ilande.co.u= k> Reviewed-by: Eduardo Habkost Signed-off-by: Eduardo Habkost --- hw/nvram/fw_cfg.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 3a988b6..97c7677 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -37,9 +37,6 @@ =20 #define FW_CFG_FILE_SLOTS_DFLT 0x20 =20 -#define FW_CFG_NAME "fw_cfg" -#define FW_CFG_PATH "/machine/" FW_CFG_NAME - #define TYPE_FW_CFG "fw_cfg" #define TYPE_FW_CFG_IO "fw_cfg_io" #define TYPE_FW_CFG_MEM "fw_cfg_mem" @@ -909,17 +906,16 @@ static void fw_cfg_machine_ready(struct Notifier *n, = void *data) =20 =20 =20 -static void fw_cfg_init1(DeviceState *dev) +static void fw_cfg_common_realize(DeviceState *dev, Error **errp) { FWCfgState *s =3D FW_CFG(dev); MachineState *machine =3D MACHINE(qdev_get_machine()); uint32_t version =3D FW_CFG_VERSION; =20 - assert(!object_resolve_path(FW_CFG_PATH, NULL)); - - object_property_add_child(OBJECT(machine), FW_CFG_NAME, OBJECT(s), NUL= L); - - qdev_init_nofail(dev); + if (!fw_cfg_find()) { + error_setg(errp, "at most one %s device is permitted", TYPE_FW_CFG= ); + return; + } =20 fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); fw_cfg_add_bytes(s, FW_CFG_UUID, &qemu_uuid, 16); @@ -952,7 +948,9 @@ FWCfgState *fw_cfg_init_io_dma(uint32_t iobase, uint32_= t dma_iobase, qdev_prop_set_bit(dev, "dma_enabled", false); } =20 - fw_cfg_init1(dev); + object_property_add_child(OBJECT(qdev_get_machine()), TYPE_FW_CFG, + OBJECT(dev), NULL); + qdev_init_nofail(dev); =20 sbd =3D SYS_BUS_DEVICE(dev); ios =3D FW_CFG_IO(dev); @@ -990,7 +988,9 @@ FWCfgState *fw_cfg_init_mem_wide(hwaddr ctl_addr, qdev_prop_set_bit(dev, "dma_enabled", false); } =20 - fw_cfg_init1(dev); + object_property_add_child(OBJECT(qdev_get_machine()), TYPE_FW_CFG, + OBJECT(dev), NULL); + qdev_init_nofail(dev); =20 sbd =3D SYS_BUS_DEVICE(dev); sysbus_mmio_map(sbd, 0, ctl_addr); @@ -1021,6 +1021,7 @@ FWCfgState *fw_cfg_find(void) return FW_CFG(object_resolve_path_type("", TYPE_FW_CFG, NULL)); } =20 + static void fw_cfg_class_init(ObjectClass *klass, void *data) { DeviceClass *dc =3D DEVICE_CLASS(klass); @@ -1092,6 +1093,8 @@ static void fw_cfg_io_realize(DeviceState *dev, Error= **errp) &fw_cfg_dma_mem_ops, FW_CFG(s), "fwcfg.dma", sizeof(dma_addr_t)); } + + fw_cfg_common_realize(dev, errp); } =20 static void fw_cfg_io_class_init(ObjectClass *klass, void *data) @@ -1158,6 +1161,8 @@ static void fw_cfg_mem_realize(DeviceState *dev, Erro= r **errp) sizeof(dma_addr_t)); sysbus_init_mmio(sbd, &FW_CFG(s)->dma_iomem); } + + fw_cfg_common_realize(dev, errp); } =20 static void fw_cfg_mem_class_init(ObjectClass *klass, void *data) --=20 2.9.4