[igt-dev] [PATCH i-g-t 18/24] tests/gem|kms: Remove intel_bb from fixture

["Zbigniew Kempczyński" <zbigniew.kempczynski@intel.com>]

As intel_bb "opens" connection to allocator when test completes it can
leave allocator in unknown state (mostly in failed tests). As igt_core
was armed in resetting allocator infrastructure connection to it inside
intel_bb is not valid anymore. Trying to use it leads to catastrofic
errors.

Migrate intel_bb out of fixture and create it inside tests individually.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Dominik Grzegorzek <dominik.grzegorzek@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 tests/i915/gem_caching.c              | 14 ++++++++--
 tests/i915/gem_partial_pwrite_pread.c | 40 +++++++++++++++++----------
 tests/i915/gem_render_copy.c          | 31 ++++++++++-----------
 tests/kms_big_fb.c                    | 12 +++++---
 4 files changed, 61 insertions(+), 36 deletions(-)

diff --git a/tests/i915/gem_caching.c b/tests/i915/gem_caching.c
index bdaff68a..4e844952 100644
--- a/tests/i915/gem_caching.c
+++ b/tests/i915/gem_caching.c
@@ -158,7 +158,6 @@ igt_main
 			flags = 0;
 		}
 		data.bops = buf_ops_create(data.fd);
-		ibb = intel_bb_create(data.fd, PAGE_SIZE);
 
 		scratch_buf = intel_buf_create(data.bops, BO_SIZE/4, 1,
 					       32, 0, I915_TILING_NONE, 0);
@@ -174,6 +173,8 @@ igt_main
 
 		igt_info("checking partial reads\n");
 
+		ibb = intel_bb_create(data.fd, PAGE_SIZE);
+
 		for (i = 0; i < ROUNDS; i++) {
 			uint8_t val0 = i;
 			int start, len;
@@ -195,11 +196,15 @@ igt_main
 
 			igt_progress("partial reads test: ", i, ROUNDS);
 		}
+
+		intel_bb_destroy(ibb);
 	}
 
 	igt_subtest("writes") {
 		igt_require(flags & TEST_WRITE);
 
+		ibb = intel_bb_create(data.fd, PAGE_SIZE);
+
 		igt_info("checking partial writes\n");
 
 		for (i = 0; i < ROUNDS; i++) {
@@ -240,11 +245,15 @@ igt_main
 
 			igt_progress("partial writes test: ", i, ROUNDS);
 		}
+
+		intel_bb_destroy(ibb);
 	}
 
 	igt_subtest("read-writes") {
 		igt_require((flags & TEST_BOTH) == TEST_BOTH);
 
+		ibb = intel_bb_create(data.fd, PAGE_SIZE);
+
 		igt_info("checking partial writes after partial reads\n");
 
 		for (i = 0; i < ROUNDS; i++) {
@@ -307,10 +316,11 @@ igt_main
 
 			igt_progress("partial read/writes test: ", i, ROUNDS);
 		}
+
+		intel_bb_destroy(ibb);
 	}
 
 	igt_fixture {
-		intel_bb_destroy(ibb);
 		intel_buf_destroy(scratch_buf);
 		intel_buf_destroy(staging_buf);
 		buf_ops_destroy(data.bops);
diff --git a/tests/i915/gem_partial_pwrite_pread.c b/tests/i915/gem_partial_pwrite_pread.c
index 72c33539..c2ca561e 100644
--- a/tests/i915/gem_partial_pwrite_pread.c
+++ b/tests/i915/gem_partial_pwrite_pread.c
@@ -53,7 +53,6 @@ IGT_TEST_DESCRIPTION("Test pwrite/pread consistency when touching partial"
 #define PAGE_SIZE 4096
 #define BO_SIZE (4*4096)
 
-struct intel_bb *ibb;
 struct intel_buf *scratch_buf;
 struct intel_buf *staging_buf;
 
@@ -77,7 +76,8 @@ static void *__try_gtt_map_first(data_t *data, struct intel_buf *buf,
 	return ptr;
 }
 
-static void copy_bo(struct intel_buf *src, struct intel_buf *dst)
+static void copy_bo(struct intel_bb *ibb,
+		    struct intel_buf *src, struct intel_buf *dst)
 {
 	bool has_64b_reloc;
 
@@ -109,8 +109,8 @@ static void copy_bo(struct intel_buf *src, struct intel_buf *dst)
 }
 
 static void
-blt_bo_fill(data_t *data, struct intel_buf *tmp_bo,
-		struct intel_buf *bo, uint8_t val)
+blt_bo_fill(data_t *data, struct intel_bb *ibb,
+	    struct intel_buf *tmp_bo, struct intel_buf *bo, uint8_t val)
 {
 	uint8_t *gtt_ptr;
 	int i;
@@ -124,7 +124,7 @@ blt_bo_fill(data_t *data, struct intel_buf *tmp_bo,
 
 	igt_drop_caches_set(data->drm_fd, DROP_BOUND);
 
-	copy_bo(tmp_bo, bo);
+	copy_bo(ibb, tmp_bo, bo);
 }
 
 #define MAX_BLT_SIZE 128
@@ -139,14 +139,17 @@ static void get_range(int *start, int *len)
 
 static void test_partial_reads(data_t *data)
 {
+	struct intel_bb *ibb;
 	int i, j;
 
+	ibb = intel_bb_create(data->drm_fd, PAGE_SIZE);
+
 	igt_info("checking partial reads\n");
 	for (i = 0; i < ROUNDS; i++) {
 		uint8_t val = i;
 		int start, len;
 
-		blt_bo_fill(data, staging_buf, scratch_buf, val);
+		blt_bo_fill(data, ibb, staging_buf, scratch_buf, val);
 
 		get_range(&start, &len);
 		gem_read(data->drm_fd, scratch_buf->handle, start, tmp, len);
@@ -159,26 +162,31 @@ static void test_partial_reads(data_t *data)
 
 		igt_progress("partial reads test: ", i, ROUNDS);
 	}
+
+	intel_bb_destroy(ibb);
 }
 
 static void test_partial_writes(data_t *data)
 {
+	struct intel_bb *ibb;
 	int i, j;
 	uint8_t *gtt_ptr;
 
+	ibb = intel_bb_create(data->drm_fd, PAGE_SIZE);
+
 	igt_info("checking partial writes\n");
 	for (i = 0; i < ROUNDS; i++) {
 		uint8_t val = i;
 		int start, len;
 
-		blt_bo_fill(data, staging_buf, scratch_buf, val);
+		blt_bo_fill(data, ibb, staging_buf, scratch_buf, val);
 
 		memset(tmp, i + 63, BO_SIZE);
 
 		get_range(&start, &len);
 		gem_write(data->drm_fd, scratch_buf->handle, start, tmp, len);
 
-		copy_bo(scratch_buf, staging_buf);
+		copy_bo(ibb, scratch_buf, staging_buf);
 		gtt_ptr = __try_gtt_map_first(data, staging_buf, 0);
 
 		for (j = 0; j < start; j++) {
@@ -200,19 +208,24 @@ static void test_partial_writes(data_t *data)
 
 		igt_progress("partial writes test: ", i, ROUNDS);
 	}
+
+	intel_bb_destroy(ibb);
 }
 
 static void test_partial_read_writes(data_t *data)
 {
+	struct intel_bb *ibb;
 	int i, j;
 	uint8_t *gtt_ptr;
 
+	ibb = intel_bb_create(data->drm_fd, PAGE_SIZE);
+
 	igt_info("checking partial writes after partial reads\n");
 	for (i = 0; i < ROUNDS; i++) {
 		uint8_t val = i;
 		int start, len;
 
-		blt_bo_fill(data, staging_buf, scratch_buf, val);
+		blt_bo_fill(data, ibb, staging_buf, scratch_buf, val);
 
 		/* partial read */
 		get_range(&start, &len);
@@ -226,7 +239,7 @@ static void test_partial_read_writes(data_t *data)
 		/* Change contents through gtt to make the pread cachelines
 		 * stale. */
 		val += 17;
-		blt_bo_fill(data, staging_buf, scratch_buf, val);
+		blt_bo_fill(data, ibb, staging_buf, scratch_buf, val);
 
 		/* partial write */
 		memset(tmp, i + 63, BO_SIZE);
@@ -234,7 +247,7 @@ static void test_partial_read_writes(data_t *data)
 		get_range(&start, &len);
 		gem_write(data->drm_fd, scratch_buf->handle, start, tmp, len);
 
-		copy_bo(scratch_buf, staging_buf);
+		copy_bo(ibb, scratch_buf, staging_buf);
 		gtt_ptr = __try_gtt_map_first(data, staging_buf, 0);
 
 		for (j = 0; j < start; j++) {
@@ -256,6 +269,8 @@ static void test_partial_read_writes(data_t *data)
 
 		igt_progress("partial read/writes test: ", i, ROUNDS);
 	}
+
+	intel_bb_destroy(ibb);
 }
 
 static void do_tests(data_t *data, int cache_level, const char *suffix)
@@ -288,8 +303,6 @@ igt_main
 		data.devid = intel_get_drm_devid(data.drm_fd);
 		data.bops = buf_ops_create(data.drm_fd);
 
-		ibb = intel_bb_create(data.drm_fd, PAGE_SIZE);
-
 		/* overallocate the buffers we're actually using because */	
 		scratch_buf = intel_buf_create(data.bops, BO_SIZE/4, 1, 32, 0, I915_TILING_NONE, 0);
 		staging_buf = intel_buf_create(data.bops, BO_SIZE/4, 1, 32, 0, I915_TILING_NONE, 0);
@@ -303,7 +316,6 @@ igt_main
 	do_tests(&data, 2, "-display");
 
 	igt_fixture {
-		intel_bb_destroy(ibb);
 		intel_buf_destroy(scratch_buf);
 		intel_buf_destroy(staging_buf);
 		buf_ops_destroy(data.bops);
diff --git a/tests/i915/gem_render_copy.c b/tests/i915/gem_render_copy.c
index afc490f1..e48b5b99 100644
--- a/tests/i915/gem_render_copy.c
+++ b/tests/i915/gem_render_copy.c
@@ -58,7 +58,6 @@ typedef struct {
 	int drm_fd;
 	uint32_t devid;
 	struct buf_ops *bops;
-	struct intel_bb *ibb;
 	igt_render_copyfunc_t render_copy;
 	igt_vebox_copyfunc_t vebox_copy;
 } data_t;
@@ -341,6 +340,7 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 		 enum i915_compression dst_compression,
 		 int flags)
 {
+	struct intel_bb *ibb;
 	struct intel_buf ref, src_tiled, src_ccs, dst_ccs, dst;
 	struct {
 		struct intel_buf buf;
@@ -397,6 +397,8 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 	    src_compressed || dst_compressed)
 		igt_require(intel_gen(data->devid) >= 9);
 
+	ibb = intel_bb_create(data->drm_fd, 4096);
+
 	for (int i = 0; i < num_src; i++)
 		scratch_buf_init(data, &src[i].buf, WIDTH, HEIGHT, src[i].tiling,
 				 I915_COMPRESSION_NONE);
@@ -456,12 +458,12 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 	 */
 	if (src_mixed_tiled) {
 		if (dst_compressed)
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  &dst, 0, 0, WIDTH, HEIGHT,
 					  &dst_ccs, 0, 0);
 
 		for (int i = 0; i < num_src; i++) {
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  &src[i].buf,
 					  WIDTH/4, HEIGHT/4, WIDTH/2-2, HEIGHT/2-2,
 					  dst_compressed ? &dst_ccs : &dst,
@@ -469,13 +471,13 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 		}
 
 		if (dst_compressed)
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  &dst_ccs, 0, 0, WIDTH, HEIGHT,
 					  &dst, 0, 0);
 
 	} else {
 		if (src_compression == I915_COMPRESSION_RENDER) {
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  &src_tiled, 0, 0, WIDTH, HEIGHT,
 					  &src_ccs,
 					  0, 0);
@@ -486,7 +488,7 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 						       "render-src_ccs.bin");
 			}
 		} else if (src_compression == I915_COMPRESSION_MEDIA) {
-			data->vebox_copy(data->ibb,
+			data->vebox_copy(ibb,
 					 &src_tiled, WIDTH, HEIGHT,
 					 &src_ccs);
 			if (dump_compressed_src_buf) {
@@ -498,34 +500,34 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 		}
 
 		if (dst_compression == I915_COMPRESSION_RENDER) {
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  src_compressed ? &src_ccs : &src_tiled,
 					  0, 0, WIDTH, HEIGHT,
 					  &dst_ccs,
 					  0, 0);
 
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  &dst_ccs,
 					  0, 0, WIDTH, HEIGHT,
 					  &dst,
 					  0, 0);
 		} else if (dst_compression == I915_COMPRESSION_MEDIA) {
-			data->vebox_copy(data->ibb,
+			data->vebox_copy(ibb,
 					 src_compressed ? &src_ccs : &src_tiled,
 					 WIDTH, HEIGHT,
 					 &dst_ccs);
 
-			data->vebox_copy(data->ibb,
+			data->vebox_copy(ibb,
 					 &dst_ccs,
 					 WIDTH, HEIGHT,
 					 &dst);
 		} else if (force_vebox_dst_copy) {
-			data->vebox_copy(data->ibb,
+			data->vebox_copy(ibb,
 					 src_compressed ? &src_ccs : &src_tiled,
 					 WIDTH, HEIGHT,
 					 &dst);
 		} else {
-			data->render_copy(data->ibb,
+			data->render_copy(ibb,
 					  src_compressed ? &src_ccs : &src_tiled,
 					  0, 0, WIDTH, HEIGHT,
 					  &dst,
@@ -572,8 +574,7 @@ static void test(data_t *data, uint32_t src_tiling, uint32_t dst_tiling,
 	for (int i = 0; i < num_src; i++)
 		scratch_buf_fini(&src[i].buf);
 
-	/* handles gone, need to clean the objects cache within intel_bb */
-	intel_bb_reset(data->ibb, true);
+	intel_bb_destroy(ibb);
 }
 
 static int opt_handler(int opt, int opt_index, void *data)
@@ -796,7 +797,6 @@ igt_main_args("dac", NULL, help_str, opt_handler, NULL)
 		data.vebox_copy = igt_get_vebox_copyfunc(data.devid);
 
 		data.bops = buf_ops_create(data.drm_fd);
-		data.ibb = intel_bb_create(data.drm_fd, 4096);
 
 		igt_fork_hang_detector(data.drm_fd);
 	}
@@ -849,7 +849,6 @@ igt_main_args("dac", NULL, help_str, opt_handler, NULL)
 
 	igt_fixture {
 		igt_stop_hang_detector();
-		intel_bb_destroy(data.ibb);
 		buf_ops_destroy(data.bops);
 	}
 }
diff --git a/tests/kms_big_fb.c b/tests/kms_big_fb.c
index 02e9915b..445d7bb0 100644
--- a/tests/kms_big_fb.c
+++ b/tests/kms_big_fb.c
@@ -662,7 +662,6 @@ igt_main
 			data.render_copy = igt_get_render_copyfunc(data.devid);
 
 		data.bops = buf_ops_create(data.drm_fd);
-		data.ibb = intel_bb_create(data.drm_fd, 4096);
 	}
 
 	/*
@@ -675,7 +674,9 @@ igt_main
 		igt_subtest_f("%s-addfb-size-overflow",
 			      modifiers[i].name) {
 			data.modifier = modifiers[i].modifier;
+			data.ibb = intel_bb_create(data.drm_fd, 4096);
 			test_size_overflow(&data);
+			intel_bb_destroy(data.ibb);
 		}
 	}
 
@@ -683,15 +684,18 @@ igt_main
 		igt_subtest_f("%s-addfb-size-offset-overflow",
 			      modifiers[i].name) {
 			data.modifier = modifiers[i].modifier;
+			data.ibb = intel_bb_create(data.drm_fd, 4096);
 			test_size_offset_overflow(&data);
+			intel_bb_destroy(data.ibb);
 		}
 	}
 
 	for (int i = 0; i < ARRAY_SIZE(modifiers); i++) {
 		igt_subtest_f("%s-addfb", modifiers[i].name) {
 			data.modifier = modifiers[i].modifier;
-
+			data.ibb = intel_bb_create(data.drm_fd, 4096);
 			test_addfb(&data);
+			intel_bb_destroy(data.ibb);
 		}
 	}
 
@@ -709,7 +713,9 @@ igt_main
 					igt_require(data.format == DRM_FORMAT_C8 ||
 						    igt_fb_supported_format(data.format));
 					igt_require(igt_display_has_format_mod(&data.display, data.format, data.modifier));
+					data.ibb = intel_bb_create(data.drm_fd, 4096);
 					test_scanout(&data);
+					intel_bb_destroy(data.ibb);
 				}
 			}
 
@@ -720,8 +726,6 @@ igt_main
 
 	igt_fixture {
 		igt_display_fini(&data.display);
-
-		intel_bb_destroy(data.ibb);
 		buf_ops_destroy(data.bops);
 	}
 }
-- 
2.26.0

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