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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42d9b16bfbfsm29152325e9.22.2024.09.13.08.14.15 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Sep 2024 08:14:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1726240456; x=1726845256; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=4imojfIsJ60JAMsYjzxe7fUUa1MPhY4EYRSKYHUjSoQ=; b=CGXt5n6XUxQa7AGXusN8fiyhY2VY0ma3HMKe8PJDvgrIV0htmyjd86F3PEKgtEpPYg tgeCMIacCDpWDTL4acPZjgEN8M578kQMK3liLYyK6McASYNPdq3RyhINOlJbW0jPsCd/ HV7VZcPGWLb7joSgmuJq7eXYea/2er8tKDLRWb/rJ+ED3XHdZs4t+5UwQQW7dIneISjK Um0Sy5RhogLrdQ0xcOsSvpNyjPZY26cMJRLaigyVmtSmDiQDf5kaAfy1Iu02GVB3MCa8 jW6S3awyqwORaaR2aE/pypRedlgC5ttv7mqbhZcPPWhSVn7Sc+6o4YzY7v+x+JWwjWtH PStw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726240456; x=1726845256; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=4imojfIsJ60JAMsYjzxe7fUUa1MPhY4EYRSKYHUjSoQ=; b=tCiMO7QQFTc+PyNTKLzGIO418MH3qTNHNEiMbGt1hTAR1678/Vk5QRBUJdhEclykOk AXqukmGEaDmevEXyr4lt1QxnEKB3pT3l/dn2RBFiYJ4zql+AIJyVQuvLHBWhsPdl8JOv Sh78FcT9imQyikxca7MGR7Ua27Ascp+bSUUORzxi4umgk9dKWmFRzi8pEB+DhkkelKjy WianlMuLkGjCcVnu4uQD34t7MquXMqPQMiEicPLx3A7r7INc4nrO73No1tRnZOnR9vG4 t5a/0FSpjd47D0/Nb7lsUTimOtIaPeLF88qIMEbNlSZKB+Y+zEjQWCPZHuHC1BAl7/6Q Uq1Q== X-Gm-Message-State: AOJu0YyHi+zGh4teOsMR2KGoGvsS0Z8ntBaktLBnIvR7lbjjTzWV7XUa hc8vBiT27+nYexCI7oAzvpR+IuEE+Sl3attCpTJ4Bp6+mqWIfdG27/Hx0p2tymnatJX+vudC+tG o X-Google-Smtp-Source: AGHT+IGOI4LNzrulSA+u/5UmOus/Px7Og6GOHll1hGy1pxaNZAGdBlDkWz1jkNfZTO62sd3CFErv7A== X-Received: by 2002:a05:600c:1e1a:b0:426:5fbe:bf75 with SMTP id 5b1f17b1804b1-42cdb567190mr51997755e9.23.1726240455887; Fri, 13 Sep 2024 08:14:15 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 06/27] hw: Define new device_class_set_legacy_reset() Date: Fri, 13 Sep 2024 16:13:50 +0100 Message-Id: <20240913151411.2167922-7-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240913151411.2167922-1-peter.maydell@linaro.org> References: <20240913151411.2167922-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::331; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x331.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1726240503870116600 Define a device_class_set_legacy_reset() function which sets the DeviceClass::reset field. This serves two purposes: * it makes it clearer to the person writing code that DeviceClass::reset is now legacy and they should look for the new alternative (which is Resettable) * it makes it easier to rename the reset field (which in turn makes it easier to find places that call it) The Coccinelle script can be used to automatically convert code that was doing an open-coded assignment to DeviceClass::reset to call device_class_set_legacy_reset() instead. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Message-id: 20240830145812.1967042-7-peter.maydell@linaro.org --- scripts/coccinelle/device-reset.cocci | 30 +++++++++++++++++++++++++++ include/hw/qdev-core.h | 13 ++++++++++++ hw/core/qdev.c | 5 +++++ 3 files changed, 48 insertions(+) create mode 100644 scripts/coccinelle/device-reset.cocci diff --git a/scripts/coccinelle/device-reset.cocci b/scripts/coccinelle/dev= ice-reset.cocci new file mode 100644 index 00000000000..510042afcca --- /dev/null +++ b/scripts/coccinelle/device-reset.cocci @@ -0,0 +1,30 @@ +// Convert opencoded DeviceClass::reset assignments to calls to +// device_class_set_legacy_reset() +// +// Copyright Linaro Ltd 2024 +// This work is licensed under the terms of the GNU GPLv2 or later. +// +// spatch --macro-file scripts/cocci-macro-file.h \ +// --sp-file scripts/coccinelle/device-reset.cocci \ +// --keep-comments --smpl-spacing --in-place --include-headers --di= r hw +// +// For simplicity we assume some things about the code we're modifying +// that happen to be true for all our targets: +// * all cpu_class_set_parent_reset() callsites have a 'DeviceClass *dc' = local +// * the parent reset field in the target CPU class is 'parent_reset' +// * no reset function already has a 'dev' local + +@@ +identifier dc, resetfn; +@@ + DeviceClass *dc; + ... +- dc->reset =3D resetfn; ++ device_class_set_legacy_reset(dc, resetfn); +@@ +identifier dc, resetfn; +@@ + DeviceClass *dc; + ... +- dc->reset =3D &resetfn; ++ device_class_set_legacy_reset(dc, resetfn); diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 18c7845ce9b..ade85c31e05 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -953,6 +953,19 @@ void device_class_set_parent_realize(DeviceClass *dc, DeviceRealize dev_realize, DeviceRealize *parent_realize); =20 +/** + * device_class_set_legacy_reset(): set the DeviceClass::reset method + * @dc: The device class + * @dev_reset: the reset function + * + * This function sets the DeviceClass::reset method. This is widely + * used in existing code, but new code should prefer to use the + * Resettable API as documented in docs/devel/reset.rst. + * In addition, devices which need to chain to their parent class's + * reset methods or which need to be subclassed must use Resettable. + */ +void device_class_set_legacy_reset(DeviceClass *dc, + DeviceReset dev_reset); =20 /** * device_class_set_parent_unrealize() - set up for chaining unrealize fns diff --git a/hw/core/qdev.c b/hw/core/qdev.c index cf811580621..51827858ce7 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -844,6 +844,11 @@ static void device_class_init(ObjectClass *class, void= *data) offsetof(DeviceState, parent_bus), NULL= , 0); } =20 +void device_class_set_legacy_reset(DeviceClass *dc, DeviceReset dev_reset) +{ + dc->reset =3D dev_reset; +} + void device_class_set_parent_realize(DeviceClass *dc, DeviceRealize dev_realize, DeviceRealize *parent_realize) --=20 2.34.1