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drm/nouveau: Add getparam for current PTIMER time.

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This will be useful for computing GPU-CPU latency, including
GL_ARB_timer_query extension.

Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Marcin Kościelnicki 2010-05-23 11:36:04 +00:00 committed by Ben Skeggs
parent b334f2b3b6
commit 7fc74f17e6
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/nouveau/nouveau_state.c
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@ -913,6 +913,9 @@ 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 = dev_priv->engine.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

1
include/drm/nouveau_drm.h
View File

@ -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;