Displaying 16 results from an estimated 16 matches for "viommu_cap_config".
2019 Nov 22
0
[RFC 13/13] iommu/virtio: Add topology description to
...gt;
+#include <linux/iommu.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/printk.h>
+#include <linux/virtio_config.h>
+#include <linux/virtio_iommu.h>
+#include <linux/virtio_pci.h>
+#include <uapi/linux/virtio_iommu.h>
+
+struct viommu_cap_config {
+ u8 pos; /* PCI capability position */
+ u8 bar;
+ u32 length; /* structure size */
+ u32 offset; /* structure offset within the bar */
+};
+
+struct viommu_spec {
+ struct device *dev; /* transport device */
+ struct fwnode_handle *fwnode;
+ struct iommu_ops *ops;
+ struct list_head topology;...
2019 Nov 22
1
[RFC 13/13] iommu/virtio: Add topology description to
...clude <linux/list.h>
> +#include <linux/pci.h>
> +#include <linux/printk.h>
> +#include <linux/virtio_config.h>
> +#include <linux/virtio_iommu.h>
> +#include <linux/virtio_pci.h>
> +#include <uapi/linux/virtio_iommu.h>
> +
> +struct viommu_cap_config {
> + u8 pos; /* PCI capability position */
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
> +};
> +
> +struct viommu_spec {
> + struct device *dev; /* transport device */
> + struct fwnode_handle *fwnode;
> + st...
2020 Sep 24
2
[PATCH v3 5/6] iommu/virtio: Support topology description in config space
...to
> discover the topology before any DMA configuration takes place, and the
> virtio driver may be loaded much later. Since we discover the topology
> description when probing the PCI hierarchy, the virtual IOMMU cannot
> manage other platform devices discovered earlier.
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
s/the bar/the BAR/ (to match comment below).
> +static void viommu_pci_parse_topology(struct pci_dev *dev)
> +{
> + int ret;
> + u32 features;
> + void __iomem *regs, *...
2020 Sep 24
2
[PATCH v3 5/6] iommu/virtio: Support topology description in config space
...to
> discover the topology before any DMA configuration takes place, and the
> virtio driver may be loaded much later. Since we discover the topology
> description when probing the PCI hierarchy, the virtual IOMMU cannot
> manage other platform devices discovered earlier.
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
s/the bar/the BAR/ (to match comment below).
> +static void viommu_pci_parse_topology(struct pci_dev *dev)
> +{
> + int ret;
> + u32 features;
> + void __iomem *regs, *...
2020 Sep 04
1
[PATCH v3 5/6] iommu/virtio: Support topology description in config space
...st.h>
> +#include <linux/pci.h>
> +#include <linux/virtio_ids.h>
> +#include <linux/virtio_pci.h>
> +#include <uapi/linux/virtio_config.h>
> +#include <uapi/linux/virtio_iommu.h>
> +
> +#include "topology-helpers.h"
> +
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
> +};
> +
> +struct viommu_topo_header {
> + u8 type;
> + u8 reserved;
> + u16 length;
> +};
> +
> +static struct virt_topo_endpoint *
> +viommu_parse_node...
2020 Sep 25
0
[PATCH v3 5/6] iommu/virtio: Support topology description in config space
...ology before any DMA configuration takes place, and the
> > virtio driver may be loaded much later. Since we discover the topology
> > description when probing the PCI hierarchy, the virtual IOMMU cannot
> > manage other platform devices discovered earlier.
>
> > +struct viommu_cap_config {
> > + u8 bar;
> > + u32 length; /* structure size */
> > + u32 offset; /* structure offset within the bar */
>
> s/the bar/the BAR/ (to match comment below).
>
> > +static void viommu_pci_parse_topology(struct pci_dev *dev)
> > +{
> > + int ret;
>...
2020 Aug 21
0
[PATCH v3 5/6] iommu/virtio: Support topology description in config space
...<linux/iopoll.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/virtio_ids.h>
+#include <linux/virtio_pci.h>
+#include <uapi/linux/virtio_config.h>
+#include <uapi/linux/virtio_iommu.h>
+
+#include "topology-helpers.h"
+
+struct viommu_cap_config {
+ u8 bar;
+ u32 length; /* structure size */
+ u32 offset; /* structure offset within the bar */
+};
+
+struct viommu_topo_header {
+ u8 type;
+ u8 reserved;
+ u16 length;
+};
+
+static struct virt_topo_endpoint *
+viommu_parse_node(void __iomem *buf, size_t len)
+{
+ int ret = -EINVAL;
+ union {...
2019 Nov 22
16
[RFC 00/13] virtio-iommu on non-devicetree platforms
I'm seeking feedback on multi-platform support for virtio-iommu. At the
moment only devicetree (DT) is supported and we don't have a pleasant
solution for other platforms. Once we figure out the topology
description, x86 support is trivial.
Since the IOMMU manages memory accesses from other devices, the guest
kernel needs to initialize the IOMMU before endpoints start issuing DMA.
2019 Nov 22
16
[RFC 00/13] virtio-iommu on non-devicetree platforms
I'm seeking feedback on multi-platform support for virtio-iommu. At the
moment only devicetree (DT) is supported and we don't have a pleasant
solution for other platforms. Once we figure out the topology
description, x86 support is trivial.
Since the IOMMU manages memory accesses from other devices, the guest
kernel needs to initialize the IOMMU before endpoints start issuing DMA.
2020 Apr 21
1
[PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
...include <linux/dma-iommu.h>
> +#include <linux/list.h>
> +#include <linux/pci.h>
> +#include <linux/virt_iommu.h>
> +#include <linux/virtio_ids.h>
> +#include <linux/virtio_pci.h>
> +#include <uapi/linux/virtio_iommu.h>
> +
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
> +};
> +
> +union viommu_topo_cfg {
> + __le16 type;
> + struct virtio_iommu_topo_pci_range pci;
> + struct virtio_iommu_topo_endpoint ep;
> +};
> +
> +s...
2020 Mar 01
0
[PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
...include <linux/dma-iommu.h>
> +#include <linux/list.h>
> +#include <linux/pci.h>
> +#include <linux/virt_iommu.h>
> +#include <linux/virtio_ids.h>
> +#include <linux/virtio_pci.h>
> +#include <uapi/linux/virtio_iommu.h>
> +
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
> +};
> +
> +union viommu_topo_cfg {
> + __le16 type;
> + struct virtio_iommu_topo_pci_range pci;
> + struct virtio_iommu_topo_endpoint ep;
> +};
> +
> +s...
2020 Mar 05
2
[PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
...include <linux/dma-iommu.h>
> +#include <linux/list.h>
> +#include <linux/pci.h>
> +#include <linux/virt_iommu.h>
> +#include <linux/virtio_ids.h>
> +#include <linux/virtio_pci.h>
> +#include <uapi/linux/virtio_iommu.h>
> +
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
> +};
> +
> +union viommu_topo_cfg {
> + __le16 type;
> + struct virtio_iommu_topo_pci_range pci;
> + struct virtio_iommu_topo_endpoint ep;
> +};
> +
> +s...
2020 Mar 05
2
[PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
...include <linux/dma-iommu.h>
> +#include <linux/list.h>
> +#include <linux/pci.h>
> +#include <linux/virt_iommu.h>
> +#include <linux/virtio_ids.h>
> +#include <linux/virtio_pci.h>
> +#include <uapi/linux/virtio_iommu.h>
> +
> +struct viommu_cap_config {
> + u8 bar;
> + u32 length; /* structure size */
> + u32 offset; /* structure offset within the bar */
> +};
> +
> +union viommu_topo_cfg {
> + __le16 type;
> + struct virtio_iommu_topo_pci_range pci;
> + struct virtio_iommu_topo_endpoint ep;
> +};
> +
> +s...
2020 Aug 21
17
[PATCH v3 0/6] Add virtio-iommu built-in topology
Add a topology description to the virtio-iommu driver and enable x86
platforms.
Since [v2] we have made some progress on adding ACPI support for
virtio-iommu, which is the preferred boot method on x86. It will be a
new vendor-agnostic table describing para-virtual topologies in a
minimal format. However some platforms don't use either ACPI or DT for
booting (for example microvm), and will
2020 Aug 21
17
[PATCH v3 0/6] Add virtio-iommu built-in topology
Add a topology description to the virtio-iommu driver and enable x86
platforms.
Since [v2] we have made some progress on adding ACPI support for
virtio-iommu, which is the preferred boot method on x86. It will be a
new vendor-agnostic table describing para-virtual topologies in a
minimal format. However some platforms don't use either ACPI or DT for
booting (for example microvm), and will
2020 Feb 14
5
[PATCH 0/3] virtio-iommu on non-devicetree platforms
Add topology description to the virtio-iommu driver and enable x86
platforms. Since the RFC [1] I've mostly given up on ACPI tables, since
the internal discussions seem to have reached a dead end. The built-in
topology description presented here isn't ideal, but it is simple to
implement and doesn't impose a dependency on ACPI or device-tree, which
can be beneficial to lightweight