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Tsirkin" , Jason Wang Subject: [PATCH v2 05/12] hw/pci-host/bonito: Do not use SysBus API to map local MMIO region Date: Thu, 19 Oct 2023 09:16:03 +0200 Message-ID: <20231019071611.98885-6-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231019071611.98885-1-philmd@linaro.org> References: <20231019071611.98885-1-philmd@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::329; envelope-from=philmd@linaro.org; helo=mail-wm1-x329.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: 1697699948401100003 There is no point in exposing an internal MMIO region via SysBus and directly mapping it in the very same device. Just map it without using the SysBus API. Transformation done using the following coccinelle script: @@ expression sbdev; expression index; expression addr; expression subregion; @@ - sysbus_init_mmio(sbdev, subregion); ... when !=3D sbdev - sysbus_mmio_map(sbdev, index, addr); + memory_region_add_subregion(get_system_memory(), addr, subregion); and manually adding the local 'host_mem' variable to avoid multiple calls to get_system_memory(). Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth --- hw/pci-host/bonito.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/hw/pci-host/bonito.c b/hw/pci-host/bonito.c index ee6cb85e97..96bd028671 100644 --- a/hw/pci-host/bonito.c +++ b/hw/pci-host/bonito.c @@ -654,10 +654,10 @@ static void bonito_host_realize(DeviceState *dev, Err= or **errp) static void bonito_pci_realize(PCIDevice *dev, Error **errp) { PCIBonitoState *s =3D PCI_BONITO(dev); - SysBusDevice *sysbus =3D SYS_BUS_DEVICE(s->pcihost); PCIHostState *phb =3D PCI_HOST_BRIDGE(s->pcihost); BonitoState *bs =3D s->pcihost; MemoryRegion *pcimem_alias =3D g_new(MemoryRegion, 1); + MemoryRegion *host_mem =3D get_system_memory(); =20 /* * Bonito North Bridge, built on FPGA, @@ -668,48 +668,48 @@ static void bonito_pci_realize(PCIDevice *dev, Error = **errp) /* set the north bridge register mapping */ memory_region_init_io(&s->iomem, OBJECT(s), &bonito_ops, s, "north-bridge-register", BONITO_INTERNAL_REG_SIZ= E); - sysbus_init_mmio(sysbus, &s->iomem); - sysbus_mmio_map(sysbus, 0, BONITO_INTERNAL_REG_BASE); + memory_region_add_subregion(host_mem, BONITO_INTERNAL_REG_BASE, + &s->iomem); =20 /* set the north bridge pci configure mapping */ memory_region_init_io(&phb->conf_mem, OBJECT(s), &bonito_pciconf_ops, = s, "north-bridge-pci-config", BONITO_PCICONFIG_SIZE= ); - sysbus_init_mmio(sysbus, &phb->conf_mem); - sysbus_mmio_map(sysbus, 1, BONITO_PCICONFIG_BASE); + memory_region_add_subregion(host_mem, BONITO_PCICONFIG_BASE, + &phb->conf_mem); =20 /* set the south bridge pci configure mapping */ memory_region_init_io(&phb->data_mem, OBJECT(s), &bonito_spciconf_ops,= s, "south-bridge-pci-config", BONITO_SPCICONFIG_SIZ= E); - sysbus_init_mmio(sysbus, &phb->data_mem); - sysbus_mmio_map(sysbus, 2, BONITO_SPCICONFIG_BASE); + memory_region_add_subregion(host_mem, BONITO_SPCICONFIG_BASE, + &phb->data_mem); =20 create_unimplemented_device("bonito", BONITO_REG_BASE, BONITO_REG_SIZE= ); =20 memory_region_init_io(&s->iomem_ldma, OBJECT(s), &bonito_ldma_ops, s, "ldma", 0x100); - sysbus_init_mmio(sysbus, &s->iomem_ldma); - sysbus_mmio_map(sysbus, 3, 0x1fe00200); + memory_region_add_subregion(host_mem, 0x1fe00200, + &s->iomem_ldma); =20 /* PCI copier */ memory_region_init_io(&s->iomem_cop, OBJECT(s), &bonito_cop_ops, s, "cop", 0x100); - sysbus_init_mmio(sysbus, &s->iomem_cop); - sysbus_mmio_map(sysbus, 4, 0x1fe00300); + memory_region_add_subregion(host_mem, 0x1fe00300, + &s->iomem_cop); =20 create_unimplemented_device("ROMCS", BONITO_FLASH_BASE, 60 * MiB); =20 /* Map PCI IO Space 0x1fd0 0000 - 0x1fd1 0000 */ memory_region_init_alias(&s->bonito_pciio, OBJECT(s), "isa_mmio", get_system_io(), 0, BONITO_PCIIO_SIZE); - sysbus_init_mmio(sysbus, &s->bonito_pciio); - sysbus_mmio_map(sysbus, 5, BONITO_PCIIO_BASE); + memory_region_add_subregion(host_mem, BONITO_PCIIO_BASE, + &s->bonito_pciio); =20 /* add pci local io mapping */ =20 memory_region_init_alias(&s->bonito_localio, OBJECT(s), "IOCS[0]", get_system_io(), 0, 256 * KiB); - sysbus_init_mmio(sysbus, &s->bonito_localio); - sysbus_mmio_map(sysbus, 6, BONITO_DEV_BASE); + memory_region_add_subregion(host_mem, BONITO_DEV_BASE, + &s->bonito_localio); create_unimplemented_device("IOCS[1]", BONITO_DEV_BASE + 1 * 256 * KiB, 256 * KiB); create_unimplemented_device("IOCS[2]", BONITO_DEV_BASE + 2 * 256 * KiB, @@ -719,7 +719,7 @@ static void bonito_pci_realize(PCIDevice *dev, Error **= errp) =20 memory_region_init_alias(pcimem_alias, NULL, "pci.mem.alias", &bs->pci_mem, 0, BONITO_PCIHI_SIZE); - memory_region_add_subregion(get_system_memory(), + memory_region_add_subregion(host_mem, BONITO_PCIHI_BASE, pcimem_alias); create_unimplemented_device("PCI_2", (hwaddr)BONITO_PCIHI_BASE + BONITO_PCIHI_S= IZE, --=20 2.41.0