[PATCH i-g-t v3 07/11] lib/igt_kms: Add support for the OUT_FENCE_PTR property

Robert Foss
2017-01-31T01:59:55Z

From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

Add support for the OUT_FENCE_PTR property to enable setting out fences for
atomic commits.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Robert Foss <robert.foss@collabora.com>
---
lib/igt_kms.c | 26 +++++++++++++++++++++++++-
lib/igt_kms.h | 6 +++++-
2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index b79d2867..f14496dd 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -179,7 +179,8 @@ const char *igt_crtc_prop_names[IGT_NUM_CRTC_PROPS] = {
"DEGAMMA_LUT",
"GAMMA_LUT",
"MODE_ID",
- "ACTIVE"
+ "ACTIVE",
+ "OUT_FENCE_PTR"
};

const char *igt_connector_prop_names[IGT_NUM_CONNECTOR_PROPS] = {
@@ -2393,6 +2394,15 @@ static void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicRe
igt_atomic_populate_crtc_req(req, pipe_obj, IGT_CRTC_ACTIVE, !!output);
}

+ pipe_obj->out_fence = -1;
+ if (pipe_obj->out_fence_requested)
+ {
+ pipe_obj->out_fence_requested = false;
+ igt_atomic_populate_crtc_req(req, pipe_obj, IGT_CRTC_OUT_FENCE_PTR,
+ (uint64_t)(uintptr_t) &pipe_obj->out_fence);
+ igt_assert_f(pipe_obj->out_fence != -1, "Unable to get fence, received -1 fd\n");
+ }
+
/*
* TODO: Add all crtc level properties here
*/
@@ -2984,6 +2994,20 @@ igt_pipe_set_gamma_lut(igt_pipe_t *pipe, void *ptr, size_t length)
}

/**
+ * igt_pipe_set_out_fence_ptr:
+ * @pipe: pipe pointer to which background color to be set
+ * @fence_ptr: out fence pointer
+ *
+ * Sets the out fence pointer that will be passed to the kernel in
+ * the atomic ioctl. When the kernel returns the out fence pointer
+ * will contain the fd number of the out fence created by KMS.
+ */
+void igt_pipe_set_out_fence_ptr(igt_pipe_t *pipe, int64_t *fence_ptr)
+{
+ pipe->out_fence_ptr = fence_ptr;
+}
+
+/**
* igt_crtc_set_background:
* @pipe: pipe pointer to which background color to be set
* @background: background color value in BGR 16bpc
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 85688853..9672dadc 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -94,6 +94,7 @@ enum igt_atomic_crtc_properties {
IGT_CRTC_GAMMA_LUT,
IGT_CRTC_MODE_ID,
IGT_CRTC_ACTIVE,
+ IGT_CRTC_OUT_FENCE_PTR,
IGT_NUM_CRTC_PROPS
};

@@ -341,6 +342,9 @@ struct igt_pipe {

uint64_t mode_blob;
bool mode_changed;
+
+ int64_t out_fence;
+ bool out_fence_requested;
};

typedef struct {
@@ -395,7 +399,7 @@ static inline bool igt_plane_supports_rotation(igt_plane_t *plane)
{
return plane->rotation_property != 0;
}
-
+void igt_pipe_request_out_fence(igt_pipe_t *pipe);
void igt_pipe_set_degamma_lut(igt_pipe_t *pipe, void *ptr, size_t length);
void igt_pipe_set_ctm_matrix(igt_pipe_t *pipe, void *ptr, size_t length);
void igt_pipe_set_gamma_lut(igt_pipe_t *pipe, void *ptr, size_t length);