linux-kernel - [PATCH drm-misc-next v6 2/6] drm/gpuvm: add drm_gpuvm_flags to drm

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Message-ID: <20231008233212.13815-3-dakr@redhat.com>
Date:   Mon,  9 Oct 2023 01:32:02 +0200
From:   Danilo Krummrich <dakr@...hat.com>
To:     airlied@...il.com, daniel@...ll.ch, matthew.brost@...el.com,
        thomas.hellstrom@...ux.intel.com, sarah.walker@...tec.com,
        donald.robson@...tec.com, boris.brezillon@...labora.com,
        christian.koenig@....com, faith@...strand.net
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Danilo Krummrich <dakr@...hat.com>
Subject: [PATCH drm-misc-next v6 2/6] drm/gpuvm: add drm_gpuvm_flags to drm_gpuvm

Introduce flags for struct drm_gpuvm, this required by subsequent
commits.

Signed-off-by: Danilo Krummrich <dakr@...hat.com>
---
 drivers/gpu/drm/drm_gpuvm.c            |  4 +++-
 drivers/gpu/drm/nouveau/nouveau_uvmm.c |  2 +-
 include/drm/drm_gpuvm.h                | 17 ++++++++++++++++-
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_gpuvm.c b/drivers/gpu/drm/drm_gpuvm.c
index ebda9d594165..6368dfdbe9dd 100644
--- a/drivers/gpu/drm/drm_gpuvm.c
+++ b/drivers/gpu/drm/drm_gpuvm.c
@@ -703,6 +703,7 @@ EXPORT_SYMBOL_GPL(drm_gpuvm_root_object_alloc);
  * @gpuvm: pointer to the &drm_gpuvm to initialize
  * @r_obj: the root &drm_gem_object providing the GPUVM's common &dma_resv
  * @name: the name of the GPU VA space
+ * @flags: the &drm_gpuvm_flags for this GPUVM
  * @start_offset: the start offset of the GPU VA space
  * @range: the size of the GPU VA space
  * @reserve_offset: the start of the kernel reserved GPU VA area
@@ -716,7 +717,7 @@ EXPORT_SYMBOL_GPL(drm_gpuvm_root_object_alloc);
  */
 void
 drm_gpuvm_init(struct drm_gpuvm *gpuvm, struct drm_gem_object *r_obj,
-	       const char *name,
+	       const char *name, enum drm_gpuvm_flags flags,
 	       u64 start_offset, u64 range,
 	       u64 reserve_offset, u64 reserve_range,
 	       const struct drm_gpuvm_ops *ops)
@@ -729,6 +730,7 @@ drm_gpuvm_init(struct drm_gpuvm *gpuvm, struct drm_gem_object *r_obj,
 	gpuvm->mm_range = range;
 
 	gpuvm->name = name ? name : "unknown";
+	gpuvm->flags = flags;
 	gpuvm->ops = ops;
 	gpuvm->r_obj = r_obj;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_uvmm.c b/drivers/gpu/drm/nouveau/nouveau_uvmm.c
index 4dea847ef989..93ad2ba7ec8b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_uvmm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_uvmm.c
@@ -1843,7 +1843,7 @@ nouveau_uvmm_init(struct nouveau_uvmm *uvmm, struct nouveau_cli *cli,
 	uvmm->kernel_managed_addr = kernel_managed_addr;
 	uvmm->kernel_managed_size = kernel_managed_size;
 
-	drm_gpuvm_init(&uvmm->base, r_obj, cli->name,
+	drm_gpuvm_init(&uvmm->base, r_obj, cli->name, 0,
 		       NOUVEAU_VA_SPACE_START,
 		       NOUVEAU_VA_SPACE_END,
 		       kernel_managed_addr, kernel_managed_size,
diff --git a/include/drm/drm_gpuvm.h b/include/drm/drm_gpuvm.h
index 0aec14d8b259..13539f32c2e2 100644
--- a/include/drm/drm_gpuvm.h
+++ b/include/drm/drm_gpuvm.h
@@ -183,6 +183,16 @@ static inline bool drm_gpuva_invalidated(struct drm_gpuva *va)
 	return va->flags & DRM_GPUVA_INVALIDATED;
 }
 
+/**
+ * enum drm_gpuvm_flags - flags for struct drm_gpuvm
+ */
+enum drm_gpuvm_flags {
+	/**
+	 * @DRM_GPUVM_USERBITS: user defined bits
+	 */
+	DRM_GPUVM_USERBITS = (1 << 0),
+};
+
 /**
  * struct drm_gpuvm - DRM GPU VA Manager
  *
@@ -201,6 +211,11 @@ struct drm_gpuvm {
 	 */
 	const char *name;
 
+	/**
+	 * @flags: the &drm_gpuvm_flags of this GPUVM
+	 */
+	enum drm_gpuvm_flags flags;
+
 	/**
 	 * @mm_start: start of the VA space
 	 */
@@ -246,7 +261,7 @@ struct drm_gpuvm {
 };
 
 void drm_gpuvm_init(struct drm_gpuvm *gpuvm, struct drm_gem_object *r_obj,
-		    const char *name,
+		    const char *name, enum drm_gpuvm_flags flags,
 		    u64 start_offset, u64 range,
 		    u64 reserve_offset, u64 reserve_range,
 		    const struct drm_gpuvm_ops *ops);
-- 
2.41.0