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drm/nouveau: Add getparam to get available PGRAPH units. 

On nv50, this will be needed by applications using CUDA to know
how much stack/local memory to allocate.

Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Marcin Kościelnicki 2010-01-26 18:39:20 +00:00 committed by Ben Skeggs
parent a32ed69d7b
commit 69c9700b54
3 changed files with 11 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/nouveau_reg.h
View File

@ -99,6 +99,7 @@
* the card will hang early on in the X init process.
*/
# define NV_PMC_ENABLE_UNK13 (1<<13)
#define NV40_PMC_GRAPH_UNITS 0x00001540
#define NV40_PMC_BACKLIGHT 0x000015f0
# define NV40_PMC_BACKLIGHT_MASK 0x001f0000
#define NV40_PMC_1700 0x00001700

9
drivers/gpu/drm/nouveau/nouveau_state.c
View File

@ -825,6 +825,15 @@ 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_GRAPH_UNITS:
/* NV40 and NV50 versions are quite different, but register
* address is the same. User is supposed to know the card
* family anyway... */
if (dev_priv->chipset >= 0x40) {
getparam->value = nv_rd32(dev, NV40_PMC_GRAPH_UNITS);
break;
}
/* FALLTHRU */
default:
NV_ERROR(dev, "unknown parameter %lld\n", getparam->param);
return -EINVAL;

1
include/drm/nouveau_drm.h
View File

@ -77,6 +77,7 @@ struct drm_nouveau_gpuobj_free {
#define NOUVEAU_GETPARAM_PCI_PHYSICAL 10
#define NOUVEAU_GETPARAM_CHIPSET_ID 11
#define NOUVEAU_GETPARAM_VM_VRAM_BASE 12
#define NOUVEAU_GETPARAM_GRAPH_UNITS 13
struct drm_nouveau_getparam {
uint64_t param;
uint64_t value;