| Message ID | 20230809021108.674-2-gurchetansingh@chromium.org |
|---|---|
| State | New |
| Headers | show |
| Series | gfxstream + rutabaga_gfx | expand |
On Wed, Aug 09, 2023 at 10:11:00AM +0800, Gurchetan Singh wrote: > From: "Dr. David Alan Gilbert" <dgilbert@redhat.com> > > Define a new capability type 'VIRTIO_PCI_CAP_SHARED_MEMORY_CFG' to allow > defining shared memory regions with sizes and offsets of 2^32 and more. > Multiple instances of the capability are allowed and distinguished > by a device-specific 'id'. > > Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> > Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com> > Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org> > Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org> > Tested-by: Alyssa Ross <hi@alyssa.is> > Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Acked-and-Tested-by: Huang Rui <ray.huang@amd.com> > --- > hw/virtio/virtio-pci.c | 18 ++++++++++++++++++ > include/hw/virtio/virtio-pci.h | 4 ++++ > 2 files changed, 22 insertions(+) > > diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c > index edbc0daa18..da8c9ea12d 100644 > --- a/hw/virtio/virtio-pci.c > +++ b/hw/virtio/virtio-pci.c > @@ -1435,6 +1435,24 @@ static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy, > return offset; > } > > +int virtio_pci_add_shm_cap(VirtIOPCIProxy *proxy, > + uint8_t bar, uint64_t offset, uint64_t length, > + uint8_t id) > +{ > + struct virtio_pci_cap64 cap = { > + .cap.cap_len = sizeof cap, > + .cap.cfg_type = VIRTIO_PCI_CAP_SHARED_MEMORY_CFG, > + }; > + > + cap.cap.bar = bar; > + cap.cap.length = cpu_to_le32(length); > + cap.length_hi = cpu_to_le32(length >> 32); > + cap.cap.offset = cpu_to_le32(offset); > + cap.offset_hi = cpu_to_le32(offset >> 32); > + cap.cap.id = id; > + return virtio_pci_add_mem_cap(proxy, &cap.cap); > +} > + > static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr, > unsigned size) > { > diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h > index ab2051b64b..5a3f182f99 100644 > --- a/include/hw/virtio/virtio-pci.h > +++ b/include/hw/virtio/virtio-pci.h > @@ -264,4 +264,8 @@ unsigned virtio_pci_optimal_num_queues(unsigned fixed_queues); > void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueue *vq, > int n, bool assign, > bool with_irqfd); > + > +int virtio_pci_add_shm_cap(VirtIOPCIProxy *proxy, uint8_t bar, uint64_t offset, > + uint64_t length, uint8_t id); > + > #endif > -- > 2.41.0.640.ga95def55d0-goog >
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index edbc0daa18..da8c9ea12d 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1435,6 +1435,24 @@ static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy, return offset; } +int virtio_pci_add_shm_cap(VirtIOPCIProxy *proxy, + uint8_t bar, uint64_t offset, uint64_t length, + uint8_t id) +{ + struct virtio_pci_cap64 cap = { + .cap.cap_len = sizeof cap, + .cap.cfg_type = VIRTIO_PCI_CAP_SHARED_MEMORY_CFG, + }; + + cap.cap.bar = bar; + cap.cap.length = cpu_to_le32(length); + cap.length_hi = cpu_to_le32(length >> 32); + cap.cap.offset = cpu_to_le32(offset); + cap.offset_hi = cpu_to_le32(offset >> 32); + cap.cap.id = id; + return virtio_pci_add_mem_cap(proxy, &cap.cap); +} + static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr, unsigned size) { diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h index ab2051b64b..5a3f182f99 100644 --- a/include/hw/virtio/virtio-pci.h +++ b/include/hw/virtio/virtio-pci.h @@ -264,4 +264,8 @@ unsigned virtio_pci_optimal_num_queues(unsigned fixed_queues); void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueue *vq, int n, bool assign, bool with_irqfd); + +int virtio_pci_add_shm_cap(VirtIOPCIProxy *proxy, uint8_t bar, uint64_t offset, + uint64_t length, uint8_t id); + #endif