Marcin Kościelnicki
2010-May-23 11:09 UTC
[Nouveau] [PATCH] drm/nouveau: Add getparam for current PTIMER time.
This will be useful for computing GPU-CPU latency, including
GL_ARB_timer_query extension.
Signed-off-by: Marcin Ko?cielnicki <koriakin at 0x04.net>
---
drivers/gpu/drm/nouveau/nouveau_state.c | 3 +++
include/drm/nouveau_drm.h | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c
b/drivers/gpu/drm/nouveau/nouveau_state.c
index e171064..3499de3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -859,6 +859,9 @@ int nouveau_ioctl_getparam(struct drm_device *dev, void
*data,
case NOUVEAU_GETPARAM_VM_VRAM_BASE:
getparam->value = dev_priv->vm_vram_base;
break;
+ case NOUVEAU_GETPARAM_PTIMER_TIME:
+ getparam->value = nv04_timer_read(dev);
+ break;
case NOUVEAU_GETPARAM_GRAPH_UNITS:
/* NV40 and NV50 versions are quite different, but register
* address is the same. User is supposed to know the card
diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h
index 5792feb..6589261 100644
--- a/include/drm/nouveau_drm.h
+++ b/include/drm/nouveau_drm.h
@@ -79,6 +79,7 @@ struct drm_nouveau_gpuobj_free {
#define NOUVEAU_GETPARAM_CHIPSET_ID 11
#define NOUVEAU_GETPARAM_VM_VRAM_BASE 12
#define NOUVEAU_GETPARAM_GRAPH_UNITS 13
+#define NOUVEAU_GETPARAM_PTIMER_TIME 14
struct drm_nouveau_getparam {
uint64_t param;
uint64_t value;
--
1.7.0.2