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Thu, 05 Jan 2023 05:07:31 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Huacai Chen , Bernhard Beschow , Jiaxun Yang Subject: [PATCH 4/8] hw/pci-host/bonito: Set reference using object_property_add_const_link() Date: Thu, 5 Jan 2023 14:07:06 +0100 Message-Id: <20230105130710.49264-5-philmd@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230105130710.49264-1-philmd@linaro.org> References: <20230105130710.49264-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42c; envelope-from=philmd@linaro.org; helo=mail-wr1-x42c.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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org A QOM object shouldn't poke at another object internals. Here the PCI host bridge instantiates its PCI function #0 and sets a reference to itself (so the function can access the bridge fields). Pass this reference with object_property_add_const_link(), since the reference won't change during the object lifetime. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson --- hw/pci-host/bonito.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/hw/pci-host/bonito.c b/hw/pci-host/bonito.c index 80ec424f86..d881c85509 100644 --- a/hw/pci-host/bonito.c +++ b/hw/pci-host/bonito.c @@ -656,10 +656,17 @@ static void bonito_host_realize(DeviceState *dev, Error **errp) static void bonito_pci_realize(PCIDevice *dev, Error **errp) { PCIBonitoState *s = PCI_BONITO(dev); - SysBusDevice *sysbus = SYS_BUS_DEVICE(s->pcihost); - PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); - BonitoState *bs = BONITO_PCI_HOST_BRIDGE(s->pcihost); MemoryRegion *pcimem_alias = g_new(MemoryRegion, 1); + SysBusDevice *sysbus; + PCIHostState *phb; + BonitoState *bs; + Object *obj; + + obj = object_property_get_link(OBJECT(dev), "host-bridge", &error_abort); + s->pcihost = BONITO_PCI_HOST_BRIDGE(obj); + sysbus = SYS_BUS_DEVICE(obj); + phb = PCI_HOST_BRIDGE(obj); + bs = BONITO_PCI_HOST_BRIDGE(obj); /* * Bonito North Bridge, built on FPGA, @@ -745,7 +752,6 @@ PCIBus *bonito_init(qemu_irq *pic) DeviceState *dev; BonitoState *pcihost; PCIHostState *phb; - PCIBonitoState *s; PCIDevice *d; dev = qdev_new(TYPE_BONITO_PCI_HOST_BRIDGE); @@ -755,10 +761,9 @@ PCIBus *bonito_init(qemu_irq *pic) sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); d = pci_new(PCI_DEVFN(0, 0), TYPE_PCI_BONITO); - s = PCI_BONITO(d); - s->pcihost = pcihost; - pcihost->pci_dev = s; + object_property_add_const_link(OBJECT(d), "host-bridge", OBJECT(dev)); pci_realize_and_unref(d, phb->bus, &error_fatal); + pcihost->pci_dev = PCI_BONITO(d); return phb->bus; }