diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2020-02-17 14:55:49 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2020-04-07 14:37:50 +1000 |
| commit | 58e92b5ee8743ebb77b824cce3330521f049bbac (patch) | |
| tree | 16ec2dd909775aec017bdc2588a6ffed36d0180e /drivers/gpu | |
| parent | 028a12f5aa829b4ba6ac011530b815eda4960e89 (diff) | |
| download | linux-58e92b5ee8743ebb77b824cce3330521f049bbac.tar.bz2 | |
drm/nouveau/nvif: access PTIMER through usermode class, if available
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/include/nvif/user.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvif/device.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvif/userc361.c | 14 |
3 files changed, 24 insertions, 5 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvif/user.h b/drivers/gpu/drm/nouveau/include/nvif/user.h index 03c11826b693..6825574d93c2 100644 --- a/drivers/gpu/drm/nouveau/include/nvif/user.h +++ b/drivers/gpu/drm/nouveau/include/nvif/user.h @@ -10,6 +10,7 @@ struct nvif_user { struct nvif_user_func { void (*doorbell)(struct nvif_user *, u32 token); + u64 (*time)(struct nvif_user *); }; int nvif_user_init(struct nvif_device *); diff --git a/drivers/gpu/drm/nouveau/nvif/device.c b/drivers/gpu/drm/nouveau/nvif/device.c index 1ec101ba3b42..0e92db44bbc8 100644 --- a/drivers/gpu/drm/nouveau/nvif/device.c +++ b/drivers/gpu/drm/nouveau/nvif/device.c @@ -27,11 +27,15 @@ u64 nvif_device_time(struct nvif_device *device) { - struct nv_device_time_v0 args = {}; - int ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_TIME, - &args, sizeof(args)); - WARN_ON_ONCE(ret != 0); - return args.time; + if (!device->user.func) { + struct nv_device_time_v0 args = {}; + int ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_TIME, + &args, sizeof(args)); + WARN_ON_ONCE(ret != 0); + return args.time; + } + + return device->user.func->time(&device->user); } void diff --git a/drivers/gpu/drm/nouveau/nvif/userc361.c b/drivers/gpu/drm/nouveau/nvif/userc361.c index 19f9958e7e01..1116f871b272 100644 --- a/drivers/gpu/drm/nouveau/nvif/userc361.c +++ b/drivers/gpu/drm/nouveau/nvif/userc361.c @@ -21,6 +21,19 @@ */ #include <nvif/user.h> +static u64 +nvif_userc361_time(struct nvif_user *user) +{ + u32 hi, lo; + + do { + hi = nvif_rd32(&user->object, 0x084); + lo = nvif_rd32(&user->object, 0x080); + } while (hi != nvif_rd32(&user->object, 0x084)); + + return ((u64)hi << 32 | lo); +} + static void nvif_userc361_doorbell(struct nvif_user *user, u32 token) { @@ -30,4 +43,5 @@ nvif_userc361_doorbell(struct nvif_user *user, u32 token) const struct nvif_user_func nvif_userc361 = { .doorbell = nvif_userc361_doorbell, + .time = nvif_userc361_time, }; |