tests: add basic test for missed irqs

Didn't catch any known bug, but can't hurt.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 149 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6e47822..4a7f9a7 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -47,6 +47,7 @@ TESTS = getversion \
 	gem_storedw_loop_bsd \
 	gem_storedw_batches_loop \
 	gem_dummy_reloc_loop \
+	gem_double_irq_loop \
 	gem_ring_sync_loop \
 	gem_pipe_control_store_loop \
 	$(NULL)
diff --git a/tests/gem_double_irq_loop.c b/tests/gem_double_irq_loop.c
new file mode 100644
index 0000000..e1be24f
--- /dev/null
+++ b/tests/gem_double_irq_loop.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Daniel Vetter <daniel.vetter@ffwll.ch> (based on gem_storedw_*.c)
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+#include "intel_bufmgr.h"
+#include "intel_batchbuffer.h"
+#include "intel_gpu_tools.h"
+#include "i830_reg.h"
+
+static drm_intel_bufmgr *bufmgr;
+struct intel_batchbuffer *batch;
+static drm_intel_bo *target_buffer, *blt_bo;
+
+/*
+ * Testcase: Basic check for missed irqs on blt
+ *
+ * Execs one large and then immediately a tiny batch on the blt ring. Then waits
+ * on the second batch. This hopefully catches races in our irq acknowledgement.
+ */
+
+
+#define MI_COND_BATCH_BUFFER_END	(0x36<<23 | 1)
+#define MI_DO_COMPARE			(1<<21)
+static void
+dummy_reloc_loop(void)
+{
+	int i, j;
+
+	for (i = 0; i < 0x800; i++) {
+		BEGIN_BATCH(8);
+		OUT_BATCH(XY_SRC_COPY_BLT_CMD |
+			  XY_SRC_COPY_BLT_WRITE_ALPHA |
+			  XY_SRC_COPY_BLT_WRITE_RGB);
+		OUT_BATCH((3 << 24) | /* 32 bits */
+			  (0xcc << 16) | /* copy ROP */
+			  4*4096);
+		OUT_BATCH(2048 << 16 | 0);
+		OUT_BATCH((4096) << 16 | (2048));
+		OUT_RELOC_FENCED(blt_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
+		OUT_BATCH(0 << 16 | 0);
+		OUT_BATCH(4*4096);
+		OUT_RELOC_FENCED(blt_bo, I915_GEM_DOMAIN_RENDER, 0, 0);
+		ADVANCE_BATCH();
+		intel_batchbuffer_flush(batch);
+
+		BEGIN_BATCH(4);
+		OUT_BATCH(MI_FLUSH_DW | 1);
+		OUT_BATCH(0); /* reserved */
+		OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
+				I915_GEM_DOMAIN_RENDER, 0);
+		OUT_BATCH(MI_NOOP | (1<<22) | (0xf));
+		ADVANCE_BATCH();
+		intel_batchbuffer_flush(batch);
+
+		drm_intel_bo_map(target_buffer, 0);
+		// map to force completion
+		drm_intel_bo_unmap(target_buffer);
+	}
+}
+
+int main(int argc, char **argv)
+{
+	int fd;
+	int devid;
+
+	if (argc != 1) {
+		fprintf(stderr, "usage: %s\n", argv[0]);
+		exit(-1);
+	}
+
+	fd = drm_open_any();
+	devid = intel_get_drm_devid(fd);
+	if (!HAS_BLT_RING(devid)) {
+		fprintf(stderr, "not (yet) implemented for pre-snb\n");
+		goto out;
+	}
+
+	bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
+	if (!bufmgr) {
+		fprintf(stderr, "failed to init libdrm\n");
+		exit(-1);
+	}
+	drm_intel_bufmgr_gem_enable_reuse(bufmgr);
+
+	batch = intel_batchbuffer_alloc(bufmgr, devid);
+	if (!batch) {
+		fprintf(stderr, "failed to create batch buffer\n");
+		exit(-1);
+	}
+
+	target_buffer = drm_intel_bo_alloc(bufmgr, "target bo", 4096, 4096);
+	if (!target_buffer) {
+		fprintf(stderr, "failed to alloc target buffer\n");
+		exit(-1);
+	}
+
+	blt_bo = drm_intel_bo_alloc(bufmgr, "target bo", 4*4096*4096, 4096);
+	if (!blt_bo) {
+		fprintf(stderr, "failed to alloc blt buffer\n");
+		exit(-1);
+	}
+
+	dummy_reloc_loop();
+
+	drm_intel_bo_unreference(target_buffer);
+	intel_batchbuffer_free(batch);
+	drm_intel_bufmgr_destroy(bufmgr);
+
+out:
+	close(fd);
+
+	return 0;
+}