From: Sourab Gupta <sourab.gupta@xxxxxxxxx>
The testcases test the buffer objects created with the cpu_map_not_needed flag.
These are used to test the allocation, copy, truncation and non-cpu mappable nature
of the buffer objects created with this flag.
Signed-off-by: Sourab Gupta <sourab.gupta@xxxxxxxxx>
---
tests/Makefile.sources | 1 +
tests/gem_stolen_mem.c | 277 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 278 insertions(+)
create mode 100644 tests/gem_stolen_mem.c
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 88866ac..74961ba 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -51,6 +51,7 @@ TESTS_progs_M = \
gem_ringfill \
gem_set_tiling_vs_blt \
gem_storedw_batches_loop \
+ gem_stolen_mem \
gem_tiled_blits \
gem_tiled_partial_pwrite_pread \
gem_write_read_ring_switch \
diff --git a/tests/gem_stolen_mem.c b/tests/gem_stolen_mem.c
new file mode 100644
index 0000000..805b26f
--- /dev/null
+++ b/tests/gem_stolen_mem.c
@@ -0,0 +1,277 @@
+/*
+ * Copyright © 2013 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:
+ * Sourab Gupta <sourab.gupta@xxxxxxxxx>
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <setjmp.h>
+#include <signal.h>
+
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+#include "rendercopy.h"
+#include "intel_bufmgr.h"
+#include "intel_batchbuffer.h"
+#include "intel_gpu_tools.h"
+
+#define MAX_STOLEN_BO_OBJS 12
+#define GEM_WAIT_DUR 1000000000 /* units: ns */
+
+/*define below to halt the testcase for check mem stats */
+//#define CHECK_MEM_STATS
+
+static drm_intel_bufmgr *bufmgr;
+struct intel_batchbuffer *batch;
+static const int width = 1920, height = 1080;
+static const int size = 4*1920*1080; /* size of 1 object */
+
+static int fd;
+static drm_intel_bo **src_bo, **dest_bo, **src_bo_new, **dest_bo_new;
+
+static jmp_buf jmp;
+
+static void sigtrap(int sig)
+{
+ longjmp(jmp, sig);
+}
+
+/*
+ * Testcase to check that the stolen bo is not cpu mappable
+ *
+ */
+static void
+stolen_mmap_check(void)
+{
+ unsigned long pitch = 0;
+ uint32_t *virt, i, ret, tiling_mode = I915_TILING_NONE;
+ drm_intel_bo *src, *dest;
+
+ src= drm_intel_bo_alloc(bufmgr, "src bo", size, 4096);
+ dest = drm_intel_bo_alloc_tiled(bufmgr, "dest bo", width, height, 4,
+ &tiling_mode, &pitch, BO_ALLOC_CPU_MAP_NOT_NEEDED );
+
+ /* Fill the src BO with dwords */
+ do_or_die(drm_intel_bo_map(src, 1));
+ virt = src->virtual;
+ for (i = 0; i < width*height; i++)
+ virt[i] = i;
+
+ intel_copy_bo(batch, dest, src, width, height);
+
+ //Try to mmap the (already processed) stolen bo
+ ret = drm_intel_bo_map(dest, 1);
+ igt_assert(ret != 0);
+
+ drm_intel_bo_unreference(src);
+ drm_intel_bo_unreference(dest);
+}
+
+/*
+ * Testcase to check the copy operation on stolen bo.
+ * First fully exhaust the stolen memory. In the end make space for one stolen mem bo.
+ */
+static void stolen_bo_copy(int num_bo)
+{
+ unsigned long pitch = 0;
+ uint32_t tiling_mode = I915_TILING_NONE;
+ uint32_t *virt, ret, i, count;
+
+ for(count=0; count<num_bo; count++)
+ {
+ src_bo[count] = drm_intel_bo_alloc(bufmgr, "src bo", size, 4096);
+ dest_bo[count] = drm_intel_bo_alloc_tiled(bufmgr, "dest bo", width, height, 4,
+ &tiling_mode, &pitch, BO_ALLOC_CPU_MAP_NOT_NEEDED );
+
+ igt_assert(src_bo[count] != NULL);
+ igt_assert(dest_bo[count] != NULL);
+
+ /* Fill the src BO with dwords */
+ do_or_die(drm_intel_bo_map(src_bo[count], 1));
+ virt = src_bo[count]->virtual;
+ for (i = 0; i < width*height; i++)
+ virt[i] = i;
+
+
+ intel_copy_bo(batch, dest_bo[count], src_bo[count], width, height);
+
+ ret = drm_intel_gem_bo_map_gtt(dest_bo[count]);
+ igt_assert(!ret);
+
+ virt = dest_bo[count]->virtual;
+ drm_intel_gem_bo_wait(dest_bo[count],GEM_WAIT_DUR);
+ /* verify */
+ for (i = 0; i < width*height; i++) {
+ if (virt[i] != i) {
+ fprintf(stderr, "Expected 0x%08x, found 0x%08x "
+ "at offset 0x%08x\n",
+ i, virt[i], i * 4);
+ abort();
+ }
+ }
+
+ drm_intel_bo_unmap(src_bo[count]);
+ }
+
+#if defined CHECK_MEM_STATS
+ printf("Halt to check mem statistics (through debugfs). Expected the stolen mem area to be full.\
+ Press any key to continue\n");
+ getchar();
+#endif
+ /*
+ * Mark one bo as purgeable, so that the backing storage is truncated
+ * and space for atleast one obj is there in stolen mem
+ */
+ drm_intel_bo_madvise(dest_bo[0], I915_MADV_DONTNEED);
+
+}
+
+/*
+ * This testcase will test the truncation logic of the stolen objects.
+ * At the end of every iteration of first loop, the objects will be marked as purgeable.
+ * In the second loop, the objects are checked to verify that they are not usable/accessible
+ */
+static void stolen_bo_copy_purge(int num_bo)
+{
+ unsigned long pitch = 0;
+ uint32_t tiling_mode = I915_TILING_NONE;
+ uint32_t *virt, ret, i, count;
+
+
+ for(count=0; count<num_bo; count++)
+ {
+ src_bo_new[count] = drm_intel_bo_alloc(bufmgr, "src bo", size, 4096);
+ dest_bo_new[count] = drm_intel_bo_alloc_tiled(bufmgr, "dest bo", width, height, 4,
+ &tiling_mode, &pitch, BO_ALLOC_CPU_MAP_NOT_NEEDED );
+
+ igt_assert(src_bo_new[count] != NULL);
+ igt_assert(dest_bo_new[count] != NULL);
+
+ /* Fill the src BO with dwords */
+ do_or_die(drm_intel_bo_map(src_bo_new[count], 1));
+ virt = src_bo_new[count]->virtual;
+ for (i = 0; i < width*height; i++)
+ virt[i] = i;
+
+ intel_copy_bo(batch, dest_bo_new[count], src_bo_new[count], width, height);
+
+ ret = drm_intel_gem_bo_map_gtt(dest_bo_new[count]);
+ igt_assert(!ret);
+
+ virt = dest_bo_new[count]->virtual;
+ drm_intel_gem_bo_wait(dest_bo_new[count],1000000000);
+ /* verify */
+ for (i = 0; i < width*height; i++) {
+ if (virt[i] != i) {
+ fprintf(stderr, "Expected 0x%08x, found 0x%08x "
+ "at offset 0x%08x\n",
+ i, virt[i], i * 4);
+ abort();
+ }
+ }
+
+ drm_intel_bo_unmap(src_bo_new[count]);
+
+ drm_intel_bo_madvise(dest_bo_new[count], I915_MADV_DONTNEED);
+ }
+
+ signal(SIGBUS, sigtrap);
+ for(i=0;i<num_bo;i++)
+ {
+ virt = dest_bo_new[i]->virtual;
+ switch (setjmp(jmp)) {
+ case SIGBUS:
+ break;
+ case 0:
+ *virt = 0;
+ default:
+ printf("Test fail for bo:%d\n", i);
+ igt_assert(!"reached");
+ break;
+ }
+ munmap(virt, size);
+ }
+ signal(SIGBUS, SIG_DFL);
+}
+
+int main(int argc, char **argv)
+{
+ int i, bo_count=0;
+
+ igt_subtest_init(argc, argv);
+ igt_skip_on_simulation();
+
+ igt_fixture {
+ fd = drm_open_any();
+
+ if (argc > 1)
+ bo_count = atoi(argv[1]);
+
+ igt_assert(bo_count != 0);
+
+ bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
+
+ batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
+
+ src_bo = malloc(MAX_STOLEN_BO_OBJS*sizeof(drm_intel_bo*));
+ dest_bo = malloc(MAX_STOLEN_BO_OBJS*sizeof(drm_intel_bo*));
+ src_bo_new = malloc(bo_count*sizeof(drm_intel_bo*));
+ dest_bo_new = malloc(bo_count*sizeof(drm_intel_bo*));
+ }
+
+ /* check the non cpu mappable nature */
+ igt_subtest("stolen-bo-mmap")
+ stolen_mmap_check();
+
+ /* check the copy operation and exhaust space for all but one obj from stolen mem */
+ igt_subtest("stolen-bo-copy")
+ stolen_bo_copy(MAX_STOLEN_BO_OBJS);
+
+ /*checking the purging logic for objs working on driver */
+ igt_subtest("stolen-bo-copy-purge")
+ stolen_bo_copy_purge(bo_count);
+
+
+ igt_fixture {
+ for(i=0;i<MAX_STOLEN_BO_OBJS;i++) {
+ drm_intel_bo_unreference(src_bo[i]);
+ drm_intel_bo_unreference(dest_bo[i]);
+ }
+ for(i=0;i<bo_count;i++) {
+ drm_intel_bo_unreference(src_bo_new[i]);
+ drm_intel_bo_unreference(dest_bo_new[i]);
+ }
+
+ free(src_bo);
+ free(dest_bo);
+ free(src_bo_new);
+ free(dest_bo_new);
+ intel_batchbuffer_free(batch);
+ drm_intel_bufmgr_destroy(bufmgr);
+ close(fd);
+ }
+}
--
1.7.9.5
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