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Commit 7fc74f17 authored by Marcin Kościelnicki's avatar Marcin Kościelnicki Committed by Ben Skeggs
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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: default avatarMarcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent b334f2b3

drivers/gpu/drm/nouveau/nouveau_state.c

+3 −0
Original line number Diff line number Diff line
@@ -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

include/drm/nouveau_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -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;