In upcoming drm-misc-next changes, the number of planes per pipe has
been increased as more than one primary plane can be associated with
a pipe.

The simple fix for this would be to simply bump hardcoded value for
number of frames per pipe.
But a better solution would be to add support for dynamic number of
planes per pipe to i-g-t.

Signed-off-by: Robert Foss <robert.f...@collabora.com>
---
 lib/igt_kms.c | 160 ++++++++++++++++++++++++++++++++++++++++++++--------------
 lib/igt_kms.h |  35 ++++++++-----
 2 files changed, 142 insertions(+), 53 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 8fa40c28..bfe5eab4 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -345,7 +345,7 @@ int kmstest_pipe_to_index(char pipe)
  * kmstest_plane_name:
  * @plane: display plane
  *
- * Returns: String represnting @pipe, e.g. "plane1".
+ * Returns: String representing @plane, e.g. "plane1".
  */
 const char *kmstest_plane_name(enum igt_plane plane)
 {
@@ -367,6 +367,25 @@ const char *kmstest_plane_name(enum igt_plane plane)
        return names[plane];
 }
 
+/**
+ * kmstest_plane_type_name:
+ * @plane: display plane
+ *
+ * Returns: String representing @plane, e.g. "overlay".
+ */
+const char *kmstest_plane_type_name(int plane_type)
+{
+       static const char *names[] = {
+               [DRM_PLANE_TYPE_OVERLAY] = "overlay",
+               [DRM_PLANE_TYPE_PRIMARY] = "primary",
+               [DRM_PLANE_TYPE_CURSOR] = "cursor",
+       };
+
+       igt_assert(plane_type < ARRAY_SIZE(names) && names[plane_type]);
+
+       return names[plane_type];
+}
+
 static const char *mode_stereo_name(const drmModeModeInfo *mode)
 {
        switch (mode->flags & DRM_MODE_FLAG_3D_MASK) {
@@ -1532,14 +1551,17 @@ void igt_display_init(igt_display_t *display, int 
drm_fd)
        for (i = 0; i < display->n_pipes; i++) {
                igt_pipe_t *pipe = &display->pipes[i];
                igt_plane_t *plane;
-               int p = IGT_PLANE_2;
+               int p = 1;
                int j, type;
-               uint8_t n_planes = 0;
+               uint8_t last_plane = 0, n_planes = 0;
                uint64_t prop_value;
 
                pipe->crtc_id = resources->crtcs[i];
                pipe->display = display;
                pipe->pipe = i;
+               pipe->plane_cursor = -1;
+               pipe->plane_primary = -1;
+               pipe->planes = NULL;
 
                get_crtc_property(display->drm_fd, pipe->crtc_id,
                                    "background_color",
@@ -1565,6 +1587,27 @@ void igt_display_init(igt_display_t *display, int drm_fd)
 
                igt_atomic_fill_pipe_props(display, pipe, IGT_NUM_CRTC_PROPS, 
igt_crtc_prop_names);
 
+               /* count number of valid planes */
+               for (j = 0; j < plane_resources->count_planes; j++) {
+                       drmModePlane *drm_plane;
+
+                       drm_plane = drmModeGetPlane(display->drm_fd,
+                                                   plane_resources->planes[j]);
+                       igt_assert(drm_plane);
+
+                       if (!(drm_plane->possible_crtcs & (1 << i))) {
+                               drmModeFreePlane(drm_plane);
+                               continue;
+            }
+
+                   n_planes++;
+               }
+
+               igt_assert_lte(0, n_planes);
+               pipe->planes = calloc(sizeof(igt_plane_t), n_planes);
+               igt_assert_f(pipe->planes, "Failed to allocate memory for %d 
planes\n", n_planes);
+               last_plane = n_planes - 1;
+
                /* add the planes that can be used with that pipe */
                for (j = 0; j < plane_resources->count_planes; j++) {
                        drmModePlane *drm_plane;
@@ -1582,22 +1625,27 @@ void igt_display_init(igt_display_t *display, int 
drm_fd)
                                                  plane_resources->planes[j]);
                        switch (type) {
                        case DRM_PLANE_TYPE_PRIMARY:
-                               plane = &pipe->planes[IGT_PLANE_PRIMARY];
+                               if (pipe->plane_primary == -1) {
+                                       plane = &pipe->planes[0];
+                                       plane->index = 0;
+                                       pipe->plane_primary = 0;
+                               } else {
+                                       plane = &pipe->planes[p];
+                                       plane->index = p++;
+                               }
                                plane->is_primary = 1;
-                               plane->index = IGT_PLANE_PRIMARY;
                                break;
                        case DRM_PLANE_TYPE_CURSOR:
-                               /*
-                                * Cursor should be the highest index in our
-                                * internal list, but we don't know what that
-                                * is yet.  Just stick it in the last slot
-                                * for now and we'll move it later, if
-                                * necessary.
-                                */
-                               plane = &pipe->planes[IGT_PLANE_CURSOR];
-                               plane->is_cursor = 1;
-                               plane->index = IGT_PLANE_CURSOR;
+                               if (pipe->plane_cursor == -1) {
+                                       plane = &pipe->planes[last_plane];
+                                       plane->index = last_plane;
+                                       pipe->plane_cursor = last_plane;
+                               } else {
+                                       plane = &pipe->planes[p];
+                                       plane->index = p++;
+                               }
                                display->has_cursor_plane = true;
+                               plane->is_cursor = 1;
                                break;
                        default:
                                plane = &pipe->planes[p];
@@ -1605,7 +1653,8 @@ void igt_display_init(igt_display_t *display, int drm_fd)
                                break;
                        }
 
-                       n_planes++;
+                       igt_assert_f(plane->index < n_planes, "n_planes < 
plane->index failed\n");
+                       plane->type = type;
                        plane->pipe = pipe;
                        plane->drm_plane = drm_plane;
 
@@ -1626,7 +1675,7 @@ void igt_display_init(igt_display_t *display, int drm_fd)
                 * At the bare minimum, we should expect to have a primary
                 * plane
                 */
-               igt_assert(pipe->planes[IGT_PLANE_PRIMARY].drm_plane);
+               igt_assert(pipe->planes[pipe->plane_primary].drm_plane);
 
                if (display->has_cursor_plane) {
                        /*
@@ -1634,11 +1683,11 @@ void igt_display_init(igt_display_t *display, int 
drm_fd)
                         * only 1 sprite, that's the wrong slot and we need to
                         * move it down.
                         */
-                       if (p != IGT_PLANE_CURSOR) {
+                       if (p != last_plane) {
                                pipe->planes[p] =
-                                       pipe->planes[IGT_PLANE_CURSOR];
+                                       pipe->planes[last_plane];
                                pipe->planes[p].index = p;
-                               memset(&pipe->planes[IGT_PLANE_CURSOR], 0,
+                               memset(&pipe->planes[last_plane], 0,
                                       sizeof *plane);
                        }
                } else {
@@ -1646,7 +1695,7 @@ void igt_display_init(igt_display_t *display, int drm_fd)
                        plane = &pipe->planes[p];
                        plane->pipe = pipe;
                        plane->index = p;
-                       plane->is_cursor = true;
+                       plane->type = DRM_PLANE_TYPE_CURSOR;
                }
 
                pipe->n_planes = n_planes;
@@ -1654,9 +1703,6 @@ void igt_display_init(igt_display_t *display, int drm_fd)
                for_each_plane_on_pipe(display, i, plane)
                        plane->fb_changed = true;
 
-               /* make sure we don't overflow the plane array */
-               igt_assert_lte(pipe->n_planes, IGT_MAX_PLANES);
-
                pipe->mode_changed = true;
        }
 
@@ -1709,6 +1755,9 @@ static void igt_pipe_fini(igt_pipe_t *pipe)
                        plane->drm_plane = NULL;
                }
        }
+
+       free(pipe->planes);
+       pipe->planes = NULL;
 }
 
 static void igt_output_fini(igt_output_t *output)
@@ -1797,20 +1846,41 @@ static igt_pipe_t 
*igt_output_get_driving_pipe(igt_output_t *output)
        return &display->pipes[pipe];
 }
 
-static igt_plane_t *igt_pipe_get_plane(igt_pipe_t *pipe, enum igt_plane plane)
+static igt_plane_t *igt_pipe_get_plane(igt_pipe_t *pipe, int plane_idx)
 {
-       int idx;
+       igt_assert_f(plane_idx >= 0 && plane_idx < pipe->n_planes,
+               "Valid pipe->planes plane_idx not found, plane_idx=%d 
n_planes=%d",
+               plane_idx, pipe->n_planes);
 
-       /* Cursor plane is always the highest index */
-       if (plane == IGT_PLANE_CURSOR)
-               idx = pipe->n_planes - 1;
-       else {
-               igt_assert_f(plane >= 0 && plane < (pipe->n_planes),
-                            "plane=%d\n", plane);
-               idx = plane;
+       return &pipe->planes[plane_idx];
+}
+
+
+igt_plane_t *igt_pipe_get_plane_type(igt_pipe_t *pipe, int plane_type)
+{
+       int i, plane_idx = -1;
+
+       switch(plane_type) {
+       case DRM_PLANE_TYPE_CURSOR:
+               plane_idx = pipe->plane_cursor;
+               break;
+       case DRM_PLANE_TYPE_PRIMARY:
+               plane_idx = pipe->plane_primary;
+               break;
+       case DRM_PLANE_TYPE_OVERLAY:
+               for(i = 0; i < pipe->n_planes; i++)
+                       if (pipe->planes[i].type == DRM_PLANE_TYPE_OVERLAY)
+                           plane_idx = i;
+               break;
+       default:
+               break;
        }
 
-       return &pipe->planes[idx];
+       igt_assert_f(plane_idx >= 0 && plane_idx < pipe->n_planes,
+               "Valid pipe->planes idx not found. plane_idx=%d plane_type=%d 
n_planes=%d\n",
+               plane_idx, plane_type, pipe->n_planes);
+
+       return &pipe->planes[plane_idx];
 }
 
 static igt_output_t *igt_pipe_get_output(igt_pipe_t *pipe)
@@ -2155,9 +2225,9 @@ static int igt_plane_commit(igt_plane_t *plane,
                            enum igt_commit_style s,
                            bool fail_on_error)
 {
-       if (plane->is_cursor && s == COMMIT_LEGACY) {
+       if (plane->type == DRM_PLANE_TYPE_CURSOR && s == COMMIT_LEGACY) {
                return igt_cursor_commit_legacy(plane, pipe, fail_on_error);
-       } else if (plane->is_primary && s == COMMIT_LEGACY) {
+       } else if (plane->type == DRM_PLANE_TYPE_PRIMARY && s == COMMIT_LEGACY) 
{
                return igt_primary_plane_commit_legacy(plane, pipe,
                                                       fail_on_error);
        } else {
@@ -2374,7 +2444,9 @@ display_commit_changed(igt_display_t *display, enum 
igt_commit_style s)
                        plane->position_changed = false;
                        plane->size_changed = false;
 
-                       if (s != COMMIT_LEGACY || !(plane->is_primary || 
plane->is_cursor))
+                       if (s != COMMIT_LEGACY ||
+                           !(plane->type == DRM_PLANE_TYPE_PRIMARY ||
+                             plane->type == DRM_PLANE_TYPE_CURSOR))
                                plane->rotation_changed = false;
                }
        }
@@ -2654,14 +2726,24 @@ void igt_output_set_scaling_mode(igt_output_t *output, 
uint64_t scaling_mode)
        
igt_require(output->config.atomic_props_connector[IGT_CONNECTOR_SCALING_MODE]);
 }
 
-igt_plane_t *igt_output_get_plane(igt_output_t *output, enum igt_plane plane)
+igt_plane_t *igt_output_get_plane(igt_output_t *output, int plane_idx)
+{
+       igt_pipe_t *pipe;
+
+       pipe = igt_output_get_driving_pipe(output);
+       igt_assert(pipe);
+
+       return igt_pipe_get_plane(pipe, plane_idx);
+}
+
+igt_plane_t *igt_output_get_plane_type(igt_output_t *output, int plane_type)
 {
        igt_pipe_t *pipe;
 
        pipe = igt_output_get_driving_pipe(output);
        igt_assert(pipe);
 
-       return igt_pipe_get_plane(pipe, plane);
+       return igt_pipe_get_plane_type(pipe, plane_type);
 }
 
 void igt_plane_set_fb(igt_plane_t *plane, struct igt_fb *fb)
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 3bc69b84..dea50df3 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -61,21 +61,22 @@ int kmstest_pipe_to_index(char pipe);
 
 /* We namespace this enum to not conflict with the Android i915_drm.h */
 enum igt_plane {
-       IGT_PLANE_1 = 0,
-       IGT_PLANE_PRIMARY = IGT_PLANE_1,
-       IGT_PLANE_2,
-       IGT_PLANE_3,
-       IGT_PLANE_4,
-       IGT_PLANE_5,
-       IGT_PLANE_6,
-       IGT_PLANE_7,
-       IGT_PLANE_8,
-       IGT_PLANE_9,
-       IGT_PLANE_CURSOR, /* IGT_PLANE_CURSOR is always the last plane. */
-       IGT_MAX_PLANES,
+        IGT_PLANE_1 = 0,
+        IGT_PLANE_PRIMARY = IGT_PLANE_1,
+        IGT_PLANE_2,
+        IGT_PLANE_3,
+        IGT_PLANE_4,
+        IGT_PLANE_5,
+        IGT_PLANE_6,
+        IGT_PLANE_7,
+        IGT_PLANE_8,
+        IGT_PLANE_9,
+        IGT_PLANE_CURSOR, /* IGT_PLANE_CURSOR is always the last plane. */
+        IGT_MAX_PLANES,
 };
 
 const char *kmstest_plane_name(enum igt_plane plane);
+const char *kmstest_plane_type_name(int plane_type);
 
 enum port {
         PORT_A = 0,
@@ -256,6 +257,7 @@ typedef struct {
        igt_pipe_t *pipe;
        int index;
        /* capabilities */
+       int type;
        unsigned int is_primary       : 1;
        unsigned int is_cursor        : 1;
        /* state tracking */
@@ -292,8 +294,11 @@ struct igt_pipe {
        igt_display_t *display;
        enum pipe pipe;
        bool enabled;
+
        int n_planes;
-       igt_plane_t planes[IGT_MAX_PLANES];
+       int plane_cursor;
+       int plane_primary;
+       igt_plane_t *planes;
 
        uint32_t atomic_props_crtc[IGT_NUM_CRTC_PROPS];
 
@@ -353,7 +358,9 @@ drmModeModeInfo *igt_output_get_mode(igt_output_t *output);
 void igt_output_override_mode(igt_output_t *output, drmModeModeInfo *mode);
 void igt_output_set_pipe(igt_output_t *output, enum pipe pipe);
 void igt_output_set_scaling_mode(igt_output_t *output, uint64_t scaling_mode);
-igt_plane_t *igt_output_get_plane(igt_output_t *output, enum igt_plane plane);
+igt_plane_t *igt_output_get_plane(igt_output_t *output, int plane_idx);
+igt_plane_t *igt_output_get_plane_type(igt_output_t *output, int plane_type);
+igt_plane_t *igt_pipe_get_plane_type(igt_pipe_t *pipe, int plane_type);
 bool igt_pipe_get_property(igt_pipe_t *pipe, const char *name,
                           uint32_t *prop_id, uint64_t *value,
                           drmModePropertyPtr *prop);
-- 
2.11.0.453.g787f75f05

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