From 7fc74f17e6c9b4d86371c3a947afc32bd6bc9691 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcin=20Ko=C5=9Bcielnicki?= <koriakin@0x04.net>
Date: Sun, 23 May 2010 11:36:04 +0000
Subject: [PATCH] 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>
---
drivers/gpu/drm/nouveau/nouveau_state.c | 3 +++
include/drm/nouveau_drm.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index e632339c323e..a2544ffd02cc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -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
diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h
index a6a9f4af5ebd..fe917dee723a 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;