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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>
alistair/sunxi64-5.5-dsi
Thierry Reding 2019-10-28 13:37:11 +01:00
parent 44156eee91
commit ab4f81bfc2
2 changed files with 6 additions and 0 deletions
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2
drivers/gpu/drm/tegra/drm.c
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@ -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;

4
include/linux/host1x.h
View File

@ -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 {