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bh=dgEJQN7A3LetzcY4YoTnwpWTyIH0rOx/JzL8j2HLGNA=; b=mOv7mZfK/uuQC5R4LHTnd2XAeK1ReIi9xUzMkteJYTIqoECdEax0/0tdQ5yNa2rms1bB9FzATdKCCPMkLzpkJ7QLVzKm+66iKrVW3K02OJWXjxcpd0i2FZPIEHTg/R2iF6UfQbotADnwqKHS5N9XOAk1gMOb+Q9fNk55N+OjmZMfxJo7NC4250CQHnfXYX8em7IX8/KaeM/XJcuXhy+j2MtAiHXXgdAlwxLJUs+QSOGg/UEes2ih9sf37Avyxa2q+ESusC25RcqBHpyPSFrjFqduepDk+jvqRAkiIJ2jM4ZBQeuxo/BYn4u+3K2N1P8nxULuHd3dvq+S2R6Uv1WHmw== From: Jamin Lin To: Paolo Bonzini , Peter Maydell , =?iso-8859-1?Q?C=E9dric_Le_Goater?= , Steven Lee , Troy Lee , Andrew Jeffery , Joel Stanley , =?iso-8859-1?Q?Marc-Andr=E9_Lureau?= , =?iso-8859-1?Q?Daniel_P=2E_Berrang=E9?= , =?iso-8859-1?Q?Philippe_Mathieu-Daud=E9?= , "open list:All patches CC here" , "open list:ARM TCG CPUs" CC: Jamin Lin , Troy Lee , Kane Chen , "nabihestefan@google.com" , "komlodi@google.com" , Patrick Venture Subject: [PATCH v7 20/22] hw/i3c: Add hotplug support Thread-Topic: [PATCH v7 20/22] hw/i3c: Add hotplug support Thread-Index: AQHcpfw1LaIaA77RokWGxjO0FjCimg== Date: Wed, 25 Feb 2026 02:12:36 +0000 Message-ID: <20260225021158.1586584-21-jamin_lin@aspeedtech.com> References: <20260225021158.1586584-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260225021158.1586584-1-jamin_lin@aspeedtech.com> Accept-Language: zh-TW, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=aspeedtech.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a01:111:f403:c406::3; envelope-from=jamin_lin@aspeedtech.com; helo=OS8PR02CU002.outbound.protection.outlook.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, 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: qemu development 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 @aspeedtech.com) X-ZM-MESSAGEID: 1771985763001158500 Content-Type: text/plain; charset="utf-8" This adds support for hotplugging in I3C. Conceptually this can be thought of as an I3C target being physically socketed onto a board. It is then the target's responsibility to go through the hot-join and DAA process so it can participate on the bus. Signed-off-by: Joe Komlodi Reviewed-by: Patrick Venture Signed-off-by: Jamin Lin --- hw/i3c/core.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/hw/i3c/core.c b/hw/i3c/core.c index 22e6e226a7..8a37099ce3 100644 --- a/hw/i3c/core.c +++ b/hw/i3c/core.c @@ -11,6 +11,7 @@ #include "qapi/error.h" #include "trace.h" #include "hw/i3c/i3c.h" +#include "hw/core/hotplug.h" #include "hw/core/qdev-properties.h" =20 /* @@ -26,6 +27,17 @@ static const Property i3c_props[] =3D { DEFINE_PROP_UINT64("pid", struct I3CTarget, pid, 0), }; =20 +static void i3c_realize(BusState *bus, Error **errp) +{ + qbus_set_bus_hotplug_handler(bus); +} + +static void i3c_class_init(ObjectClass *klass, const void *data) +{ + BusClass *k =3D BUS_CLASS(klass); + k->realize =3D i3c_realize; +} + I3CBus *i3c_init_bus(DeviceState *parent, const char *name) { return i3c_init_bus_type(TYPE_I3C_BUS, parent, name); @@ -633,6 +645,11 @@ static const TypeInfo i3c_types[] =3D { .parent =3D TYPE_BUS, .instance_size =3D sizeof(I3CBus), .class_size =3D sizeof(I3CBusClass), + .class_init =3D i3c_class_init, + .interfaces =3D (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + } }, { .name =3D TYPE_I3C_TARGET, --=20 2.43.0