Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 69c9700b authored by Marcin Kościelnicki's avatar Marcin Kościelnicki Committed by Ben Skeggs
Browse files

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: default avatarMarcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent a32ed69d

drivers/gpu/drm/nouveau/nouveau_reg.h

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

drivers/gpu/drm/nouveau/nouveau_state.c

+9 −0
Original line number Diff line number Diff line
@@ -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;

include/drm/nouveau_drm.h

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