From 6446c1ca2dd2ee5485cd27b1ee4b5fb70f83aacb Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Wed, 24 Jan 2024 14:24:25 +1000 Subject: [PATCH] nouveau: add an ioctl to report vram usage [ Upstream commit 72fa02fdf83306c52bc1eede28359e3fa32a151a ] This reports the currently used vram allocations. userspace using this has been proposed for nvk, but it's a rather trivial uapi addition. Reviewed-by: Faith Ekstrand Signed-off-by: Dave Airlie Stable-dep-of: aed9a1a4f710 ("drm/nouveau: use tile_mode and pte_kind for VM_BIND bo allocations") Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/nouveau_abi16.c | 5 +++++ include/uapi/drm/nouveau_drm.h | 7 +++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c index d05bd0ecea2b..0fbc9c841666 100644 --- a/drivers/gpu/drm/nouveau/nouveau_abi16.c +++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c @@ -272,6 +272,11 @@ nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS) case NOUVEAU_GETPARAM_VRAM_BAR_SIZE: getparam->value = nvkm_device->func->resource_size(nvkm_device, 1); break; + case NOUVEAU_GETPARAM_VRAM_USED: { + struct ttm_resource_manager *vram_mgr = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM); + getparam->value = (u64)ttm_resource_manager_usage(vram_mgr) << PAGE_SHIFT; + break; + } default: NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param); return -EINVAL; diff --git a/include/uapi/drm/nouveau_drm.h b/include/uapi/drm/nouveau_drm.h index 10a917639d8d..77d7ff0d5b11 100644 --- a/include/uapi/drm/nouveau_drm.h +++ b/include/uapi/drm/nouveau_drm.h @@ -61,6 +61,13 @@ extern "C" { */ #define NOUVEAU_GETPARAM_VRAM_BAR_SIZE 18 +/* + * NOUVEAU_GETPARAM_VRAM_USED + * + * Get remaining VRAM size. + */ +#define NOUVEAU_GETPARAM_VRAM_USED 19 + struct drm_nouveau_getparam { __u64 param; __u64 value;