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authorMarcin Koƛcielnicki <koriakin@0x04.net>2010-01-26 18:39:20 +0000
committerBen Skeggs <bskeggs@redhat.com>2010-02-09 12:48:08 +1000
commit69c9700b544e496dc3ccf472a4f3a76dcf4abaf7 (patch)
tree2d80752bfabdf77a42f7d432dfafed5be85f02f5
parenta32ed69d7bb3cd259d813d71281d62993b9a70fd (diff)
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 Koƛcielnicki <koriakin@0x04.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_reg.h1
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_state.c9
-rw-r--r--include/drm/nouveau_drm.h1
3 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_reg.h b/drivers/gpu/drm/nouveau/nouveau_reg.h
index 251f1b3b38b..aa9b310e41b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_reg.h
+++ b/drivers/gpu/drm/nouveau/nouveau_reg.h
@@ -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
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 241e24d60eb..fcd7610817a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -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;
diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h
index 1e67c441ea8..f745948b61e 100644
--- a/include/drm/nouveau_drm.h
+++ b/include/drm/nouveau_drm.h
@@ -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;