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[153.167.218.150]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-359bc9bd61fsm7863531a91.3.2026.03.10.07.01.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 07:01:16 -0700 (PDT) From: Daniel Palmer To: visitorckw@gmail.com, angelo@kernel-space.org, bmeng.cn@gmail.com Cc: laurent@vivier.eu, u-boot@lists.denx.de, Daniel Palmer Subject: [RFC PATCH 1/3] virtio: mmio: Allow instantiation via platform data Date: Tue, 10 Mar 2026 22:59:38 +0900 Message-ID: <20260310135940.1756141-2-daniel@thingy.jp> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260310135940.1756141-1-daniel@thingy.jp> References: <20260310135940.1756141-1-daniel@thingy.jp> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean The m68k QEMU virt machine doesn't use devicetree, yet, so allow it to create virtio-mmio instances via platform data. Signed-off-by: Daniel Palmer --- drivers/virtio/virtio_mmio.c | 27 ++++++++++++++++++--------- include/virtio_mmio.h | 12 ++++++++++++ 2 files changed, 30 insertions(+), 9 deletions(-) create mode 100644 include/virtio_mmio.h diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 1cd737aca249..28b46ab66238 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -335,21 +336,28 @@ static int virtio_mmio_notify(struct udevice *udev, struct virtqueue *vq) static int virtio_mmio_of_to_plat(struct udevice *udev) { - struct virtio_mmio_priv *priv = dev_get_priv(udev); + struct virtio_mmio_plat *plat = dev_get_plat(udev); + fdt_addr_t addr; + + addr = dev_read_addr(udev); - priv->base = (void __iomem *)(ulong)dev_read_addr(udev); - if (priv->base == (void __iomem *)FDT_ADDR_T_NONE) + if (addr == FDT_ADDR_T_NONE) return -EINVAL; + plat->base = addr; + return 0; } static int virtio_mmio_probe(struct udevice *udev) { + struct virtio_mmio_plat *plat = dev_get_plat(udev); struct virtio_mmio_priv *priv = dev_get_priv(udev); struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev); u32 magic; + priv->base = (void __iomem *)plat->base; + /* Check magic value */ magic = readl(priv->base + VIRTIO_MMIO_MAGIC_VALUE); if (magic != ('v' | 'i' << 8 | 'r' << 16 | 't' << 24)) { @@ -405,11 +413,12 @@ static const struct udevice_id virtio_mmio_ids[] = { }; U_BOOT_DRIVER(virtio_mmio) = { - .name = "virtio-mmio", - .id = UCLASS_VIRTIO, - .of_match = virtio_mmio_ids, - .ops = &virtio_mmio_ops, - .probe = virtio_mmio_probe, + .name = "virtio-mmio", + .id = UCLASS_VIRTIO, + .of_match = virtio_mmio_ids, + .ops = &virtio_mmio_ops, + .probe = virtio_mmio_probe, .of_to_plat = virtio_mmio_of_to_plat, - .priv_auto = sizeof(struct virtio_mmio_priv), + .priv_auto = sizeof(struct virtio_mmio_priv), + .plat_auto = sizeof(struct virtio_mmio_plat), }; diff --git a/include/virtio_mmio.h b/include/virtio_mmio.h new file mode 100644 index 000000000000..8c072826db55 --- /dev/null +++ b/include/virtio_mmio.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef __VIRTIO_MMIO_H__ +#define __VIRTIO_MMIO_H__ + +#include + +struct virtio_mmio_plat { + phys_addr_t base; +}; + +#endif /* __VIRTIO_MMIO_H__ */ -- 2.51.0