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Thu, 30 Mar 2023 18:01:59 -0700 (PDT) Date: Fri, 31 Mar 2023 01:01:31 +0000 In-Reply-To: <20230331010131.1412571-1-komlodi@google.com> Mime-Version: 1.0 References: <20230331010131.1412571-1-komlodi@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog Message-ID: <20230331010131.1412571-17-komlodi@google.com> Subject: [PATCH 16/16] hw/i3c: Add hotplug support From: Joe Komlodi To: qemu-devel@nongnu.org Cc: venture@google.com, komlodi@google.com, peter.maydell@linaro.org Received-SPF: pass client-ip=2607:f8b0:4864:20::b4a; envelope-from=3BzEmZAcKCioQUSRUJOMUUMRK.IUSWKSa-JKbKRTUTMTa.UXM@flex--komlodi.bounces.google.com; helo=mail-yb1-xb4a.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, 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, USER_IN_DEF_DKIM_WL=-7.5 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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 --- hw/i3c/core.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/hw/i3c/core.c b/hw/i3c/core.c index 758dd7141f..c6ef16bbba 100644 --- a/hw/i3c/core.c +++ b/hw/i3c/core.c @@ -19,6 +19,7 @@ #include "qapi/error.h" #include "trace.h" #include "hw/i3c/i3c.h" +#include "hw/hotplug.h" #include "hw/qdev-properties.h" static Property i3c_props[] = { @@ -29,11 +30,27 @@ static Property i3c_props[] = { DEFINE_PROP_END_OF_LIST(), }; +static void i3c_realize(BusState *bus, Error **errp) +{ + qbus_set_bus_hotplug_handler(bus); +} + +static void i3c_class_init(ObjectClass *klass, void *data) +{ + BusClass *k = BUS_CLASS(klass); + k->realize = i3c_realize; +} + static const TypeInfo i3c_bus_info = { .name = TYPE_I3C_BUS, .parent = TYPE_BUS, .instance_size = sizeof(I3CBus), .class_size = sizeof(I3CBusClass), + .class_init = i3c_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + } }; I3CBus *i3c_init_bus(DeviceState *parent, const char *name)