diff options
| author | Ben Skeggs | 2018-05-08 12:39:46 +0200 |
|---|---|---|
| committer | Ben Skeggs | 2018-05-18 07:01:21 +0200 |
| commit | eb47db4f3bb58b0143a911b29417e89f28e1b0c8 (patch) | |
| tree | ce2ffc0d618234a346c3fb687a3191fedcdc6357 /drivers/gpu/drm/nouveau/nouveau_chan.c | |
| parent | drm/nouveau/device: support querying available engines of a specific type (diff) | |
| download | kernel-qcow2-linux-eb47db4f3bb58b0143a911b29417e89f28e1b0c8.tar.gz kernel-qcow2-linux-eb47db4f3bb58b0143a911b29417e89f28e1b0c8.tar.xz kernel-qcow2-linux-eb47db4f3bb58b0143a911b29417e89f28e1b0c8.zip | |
drm/nouveau/fifo: support channel count query
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_chan.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_chan.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c index af1116655910..db69d13f32a7 100644 --- a/drivers/gpu/drm/nouveau/nouveau_chan.c +++ b/drivers/gpu/drm/nouveau/nouveau_chan.c @@ -474,3 +474,28 @@ done: cli->base.super = super; return ret; } + +int +nouveau_channels_init(struct nouveau_drm *drm) +{ + struct { + struct nv_device_info_v1 m; + struct { + struct nv_device_info_v1_data channels; + } v; + } args = { + .m.version = 1, + .m.count = sizeof(args.v) / sizeof(args.v.channels), + .v.channels.mthd = NV_DEVICE_FIFO_CHANNELS, + }; + struct nvif_object *device = &drm->client.device.object; + int ret; + + ret = nvif_object_mthd(device, NV_DEVICE_V0_INFO, &args, sizeof(args)); + if (ret || args.v.channels.mthd == NV_DEVICE_INFO_INVALID) + return -ENODEV; + + drm->chan.nr = args.v.channels.data; + drm->chan.context_base = dma_fence_context_alloc(drm->chan.nr); + return 0; +} |