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path: root/drivers/virtio
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2020-02-05dm: core: Create a new header file for 'compat' featuresSimon Glass2-0/+2
At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-05dm: core: Require users of devres to include the headerSimon Glass4-0/+4
At present devres.h is included in all files that include dm.h but few make use of it. Also this pulls in linux/compat which adds several more headers. Drop the automatic inclusion and require files to include devres themselves. This provides a good indication of which files use devres. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Anatolij Gustschin <agust@denx.de>
2020-01-10virtio: fix typo devicdHeinrich Schuchardt1-1/+1
%s/devicd/device Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-01-07virtio: rng: Add a random number generator(rng) driverSughosh Ganu4-0/+96
Add a driver for the virtio-rng device on the qemu platform. The device uses pci as a transport medium. The driver can be enabled with the following configs CONFIG_VIRTIO CONFIG_DM_RNG CONFIG_VIRTIO_PCI CONFIG_VIRTIO_RNG Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2019-10-31virtio: pci: use correct type in virtio_pci_bind()Heinrich Schuchardt1-1/+1
For printing as %u we should use an unsigned int. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-11-14virtio: Add a Sandbox transport driverBin Meng3-0/+242
This driver provides support for Sandbox implementation of virtio transport driver which is used for testing purpose only. Two drivers are provided. The 2nd one is a driver that lacks the 'notify' op. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: net: Support non-legacy deviceBin Meng1-5/+26
For v1.0 compliant device, it always assumes the member 'num_buffers' exists in the struct virtio_net_hdr while the legacy driver only presented 'num_buffers' when VIRTIO_NET_F_MRG_RXBUF was negotiated. Without that feature the structure was 2 bytes shorter. Update the driver to support the non-legacy device. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: pci: Support non-legacy PCI transport deviceBin Meng3-4/+613
By default QEMU creates legacy PCI transport devices, but we can ask QEMU to create non-legacy one if we pass additional device property/value pairs in the command line: -device virtio-blk-pci,disable-legacy=true,disable-modern=false This adds a new driver driver to support non-legacy (modern) device mode. Previous driver/file name is changed accordingly. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: Add virtio over pci transport driverBin Meng4-0/+603
This adds a transport driver that implements UCLASS_VIRTIO for virtio over pci, which is commonly used on x86. It only supports the legacy interface of the pci transport, which is the default device that QEMU emulates. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: Add block driver supportTuomas Tynkkynen4-0/+274
This adds virtio block device driver support. Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: Add net driver supportTuomas Tynkkynen4-0/+494
This adds virtio net device driver support. Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: Add virtio over mmio transport driverBin Meng4-0/+550
VirtIO can use various different buses and virtio devices are commonly implemented as PCI devices. But virtual environments without PCI support (a common situation in embedded devices models) might use simple memory mapped device (“virtio-mmio”) instead of the PCI device. This adds a transport driver that implements UCLASS_VIRTIO for virtio over mmio. Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14virtio: Add codes for virtual queue/ring managementTuomas Tynkkynen2-1/+359
This adds support for managing virtual queue/ring, the channel for high performance I/O between host and guest. Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14dm: Add a new uclass driver for VirtIO transport devicesBin Meng3-0/+400
This adds a new virtio uclass driver for “virtio” [1] family of devices that are are found in virtual environments like QEMU, yet by design they look like physical devices to the guest. The uclass driver provides child_pre_probe() and child_post_probe() methods to do some common operations for virtio device drivers like device and driver supported feature negotiation, etc. [1] http://docs.oasis-open.org/virtio/virtio/v1.0/virtio-v1.0.pdf Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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