gpu: host1x: Add direction flags to relocations

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@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 9a1c1694604a5f78b3a83ab915ae5a8a2eb173b9..efc8a27b9e6acf8be0f38b23911673ecef263fb7 100644 (file)
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -149,6 +149,8 @@ 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 1ba23a6a2021ff142105e81022c04ae0a58352f9..6f8d772591ba798c7e53117fa48f2a724325f134 100644 (file)
--- 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 {