[PATCH 2/8] gpu: host1x: Add direction flags to relocations

[Thierry Reding]

From: Thierry Reding <treding at nvidia.com>

Add direction flags to host1x relocations performed during job pinning.
These flags indicate the kinds of accesses that hardware is allowed to
perform on the relocated buffers.

Signed-off-by: Thierry Reding <treding at nvidia.com>
---
 drivers/gpu/drm/tegra/drm.c | 2 ++
 include/linux/host1x.h      | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index b74362cb63eb..959086644b52 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -311,6 +311,8 @@ static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
 	if (err < 0)
 		return err;
 
+	dest->flags = HOST1X_RELOC_READ | HOST1X_RELOC_WRITE;
+
 	dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf);
 	if (!dest->cmdbuf.bo)
 		return -ENOENT;
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index 1ba23a6a2021..6f8d772591ba 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -173,6 +173,9 @@ int host1x_job_submit(struct host1x_job *job);
  * host1x job
  */
 
+#define HOST1X_RELOC_READ	(1 << 0)
+#define HOST1X_RELOC_WRITE	(1 << 1)
+
 struct host1x_reloc {
 	struct {
 		struct host1x_bo *bo;
@@ -183,6 +186,7 @@ struct host1x_reloc {
 		unsigned long offset;
 	} target;
 	unsigned long shift;
+	unsigned long flags;
 };
 
 struct host1x_job {
-- 
2.23.0