[Intel-gfx] [PATCH i-g-t 1/6] lib/igt_kms: Add writeback support in lib/
Liviu Dudau
liviu.dudau at arm.com
Thu Mar 1 17:38:27 UTC 2018
From: Brian Starkey <brian.starkey at arm.com>
Add support in igt_kms for Writeback connectors, with the ability to
attach framebuffers and retrieve fences.
Signed-off-by: Brian Starkey <brian.starkey at arm.com>
---
lib/igt_kms.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
lib/igt_kms.h | 14 ++++++++++++
2 files changed, 85 insertions(+), 1 deletion(-)
diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 022abfe7..00d9d2e2 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -190,7 +190,10 @@ const char *igt_connector_prop_names[IGT_NUM_CONNECTOR_PROPS] = {
"scaling mode",
"CRTC_ID",
"DPMS",
- "Broadcast RGB"
+ "Broadcast RGB",
+ "WRITEBACK_PIXEL_FORMATS",
+ "WRITEBACK_FB_ID",
+ "WRITEBACK_OUT_FENCE_PTR"
};
/*
@@ -452,6 +455,7 @@ static const struct type_name connector_type_names[] = {
{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
{ DRM_MODE_CONNECTOR_DSI, "DSI" },
{ DRM_MODE_CONNECTOR_DPI, "DPI" },
+ { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" },
{}
};
@@ -1947,6 +1951,7 @@ void igt_display_init(igt_display_t *display, int drm_fd)
output->force_reprobe = true;
output->id = resources->connectors[i];
output->display = display;
+ output->writeback_out_fence_fd = -1;
igt_output_refresh(output);
}
@@ -2040,6 +2045,43 @@ igt_output_t *igt_output_from_connector(igt_display_t *display,
return found;
}
+void igt_output_set_writeback_fb(igt_output_t *output, struct igt_fb *fb)
+{
+ igt_display_t *display = output->display;
+ struct kmstest_connector_config *config = &output->config;
+
+ if (config->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
+ return;
+
+ LOG(display, "%s: output_set_writeback_fb(%d)\n", output->name,
+ fb ? fb->fb_id : 0);
+
+ output->writeback_fb = fb;
+}
+
+static void igt_output_reset_writeback_out_fence(igt_output_t *output)
+{
+ if (output->writeback_out_fence_fd >= 0) {
+ close(output->writeback_out_fence_fd);
+ output->writeback_out_fence_fd = -1;
+ }
+}
+
+void igt_output_request_writeback_out_fence(igt_output_t *output)
+{
+ igt_output_reset_writeback_out_fence(output);
+ igt_output_set_prop_value(output, IGT_CONNECTOR_WRITEBACK_OUT_FENCE_PTR,
+ (ptrdiff_t)&output->writeback_out_fence_fd);
+}
+
+int igt_output_get_last_writeback_out_fence(igt_output_t *output)
+{
+ int fd = output->writeback_out_fence_fd;
+ output->writeback_out_fence_fd = -1;
+
+ return fd;
+}
+
static void igt_pipe_fini(igt_pipe_t *pipe)
{
int i;
@@ -2063,6 +2105,8 @@ static void igt_pipe_fini(igt_pipe_t *pipe)
static void igt_output_fini(igt_output_t *output)
{
kmstest_free_connector_config(&output->config);
+ if (output->writeback_out_fence_fd >= 0)
+ close(output->writeback_out_fence_fd);
free(output->name);
output->name = NULL;
}
@@ -2879,6 +2923,31 @@ static void igt_atomic_prepare_connector_commit(igt_output_t *output, drmModeAto
output->props[i],
output->values[i]));
}
+
+ if (output->writeback_fb)
+ output->writeback_fb = NULL;
+
+ igt_output_reset_writeback_out_fence(output);
+}
+
+static void handle_writeback_out_fences(igt_display_t *display, uint32_t flags, int ret)
+{
+ int i;
+
+ for (i = 0; i < display->n_outputs; i++) {
+ igt_output_t *output = &display->outputs[i];
+
+ if (!output->config.connector)
+ continue;
+
+ if (!igt_output_is_prop_changed(output, IGT_CONNECTOR_WRITEBACK_OUT_FENCE_PTR))
+ continue;
+
+ igt_output_clear_prop_changed(output, IGT_CONNECTOR_WRITEBACK_OUT_FENCE_PTR);
+
+ if (ret || (flags & DRM_MODE_ATOMIC_TEST_ONLY))
+ igt_assert(output->writeback_out_fence_fd == -1);
+ }
}
/*
@@ -2929,6 +2998,7 @@ static int igt_atomic_commit(igt_display_t *display, uint32_t flags, void *user_
}
ret = drmModeAtomicCommit(display->drm_fd, req, flags, user_data);
+ handle_writeback_out_fences(display, flags, ret);
drmModeAtomicFree(req);
return ret;
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 1c46186e..59ccc4c6 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -38,6 +38,10 @@
#include "igt_fb.h"
#include "ioctl_wrappers.h"
+#ifndef DRM_MODE_CONNECTOR_WRITEBACK
+#define DRM_MODE_CONNECTOR_WRITEBACK 18
+#endif
+
/* Low-level helpers with kmstest_ prefix */
/**
@@ -120,6 +124,9 @@ enum igt_atomic_connector_properties {
IGT_CONNECTOR_CRTC_ID,
IGT_CONNECTOR_DPMS,
IGT_CONNECTOR_BROADCAST_RGB,
+ IGT_CONNECTOR_WRITEBACK_PIXEL_FORMATS,
+ IGT_CONNECTOR_WRITEBACK_FB_ID,
+ IGT_CONNECTOR_WRITEBACK_OUT_FENCE_PTR,
IGT_NUM_CONNECTOR_PROPS
};
@@ -345,6 +352,9 @@ typedef struct {
uint32_t props[IGT_NUM_CONNECTOR_PROPS];
uint64_t values[IGT_NUM_CONNECTOR_PROPS];
+
+ struct igt_fb *writeback_fb;
+ int32_t writeback_out_fence_fd;
} igt_output_t;
struct igt_display {
@@ -380,6 +390,10 @@ 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_output_t *igt_output_from_connector(igt_display_t *display,
drmModeConnector *connector);
+void igt_output_set_writeback_fb(igt_output_t *output, struct igt_fb *fb);
+void igt_output_request_writeback_out_fence(igt_output_t *output);
+int igt_output_get_last_writeback_out_fence(igt_output_t *output);
+
igt_plane_t *igt_pipe_get_plane_type(igt_pipe_t *pipe, int plane_type);
void igt_pipe_request_out_fence(igt_pipe_t *pipe);
--
2.16.1
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