tests: Add gem_evict_everything

Exercise the eviction logic. This is just a naive test to ensure that we
can evict old buffers to accommodate new batches, and in the process
trigger the evict everything logic.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/tests/Makefile.am b/tests/Makefile.am
index c724829..9e46cac 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -62,6 +62,7 @@ TESTS_progs = \
        gem_ctx_create \
        gem_ctx_exec \
        gem_double_irq_loop \
+       gem_evict_everything \
        gem_exec_big \
        gem_exec_blt \
        gem_exec_faulting_reloc \

diff --git a/tests/gem_evict_everything.c b/tests/gem_evict_everything.c
new file mode 100644 (file)
index 0000000..9c88a6b
--- /dev/null
+++ b/tests/gem_evict_everything.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright © 2011,2012 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:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ *    Daniel Vetter <daniel.vetter@ffwll.ch>
+ *
+ */
+
+/*
+ * Testcase: run a couple of big batches to force the eviction code.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+
+#define HEIGHT 256
+#define WIDTH 1024
+
+static void
+copy(int fd, uint32_t dst, uint32_t src, uint32_t *all_bo, int n_bo, int error)
+{
+       uint32_t batch[10];
+       struct drm_i915_gem_relocation_entry reloc[2];
+       struct drm_i915_gem_exec_object2 *obj;
+       struct drm_i915_gem_execbuffer2 exec;
+       uint32_t handle;
+       int n;
+
+       batch[0] = (XY_SRC_COPY_BLT_CMD |
+                   XY_SRC_COPY_BLT_WRITE_ALPHA |
+                   XY_SRC_COPY_BLT_WRITE_RGB);
+       batch[1] = (3 << 24) | /* 32 bits */
+                 (0xcc << 16) | /* copy ROP */
+                 WIDTH*4;
+       batch[2] = 0; /* dst x1,y1 */
+       batch[3] = (HEIGHT << 16) | WIDTH; /* dst x2,y2 */
+       batch[4] = 0; /* dst reloc */
+       batch[5] = 0; /* src x1,y1 */
+       batch[6] = WIDTH*4;
+       batch[7] = 0; /* src reloc */
+       batch[8] = MI_BATCH_BUFFER_END;
+       batch[9] = MI_NOOP;
+
+       handle = gem_create(fd, 4096);
+       gem_write(fd, handle, 0, batch, sizeof(batch));
+
+       reloc[0].target_handle = dst;
+       reloc[0].delta = 0;
+       reloc[0].offset = 4 * sizeof(batch[0]);
+       reloc[0].presumed_offset = 0;
+       reloc[0].read_domains = I915_GEM_DOMAIN_RENDER;
+       reloc[0].write_domain = I915_GEM_DOMAIN_RENDER;
+
+       reloc[1].target_handle = src;
+       reloc[1].delta = 0;
+       reloc[1].offset = 7 * sizeof(batch[0]);
+       reloc[1].presumed_offset = 0;
+       reloc[1].read_domains = I915_GEM_DOMAIN_RENDER;
+       reloc[1].write_domain = 0;
+
+       obj = calloc(n_bo + 1, sizeof(*obj));
+       for (n = 0; n < n_bo; n++)
+               obj[n].handle = all_bo[n];
+       obj[n].handle = handle;
+       obj[n].relocation_count = 2;
+       obj[n].relocs_ptr = (uintptr_t)reloc;
+
+       exec.buffers_ptr = (uintptr_t)obj;
+       exec.buffer_count = n_bo + 1;
+       exec.batch_start_offset = 0;
+       exec.batch_len = sizeof(batch);
+       exec.DR1 = exec.DR4 = 0;
+       exec.num_cliprects = 0;
+       exec.cliprects_ptr = 0;
+       exec.flags = HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0;
+       i915_execbuffer2_set_context_id(exec, 0);
+       exec.rsvd2 = 0;
+
+       igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &exec) == error);
+
+       gem_close(fd, handle);
+}
+
+static void minor_evictions(int fd, int size, int count)
+{
+       uint32_t *bo, *sel;
+       int n, m, pass, fail;
+
+       igt_require((uint64_t)count * size / (1024 * 1024) < intel_get_total_ram_mb() * 9 / 10);
+
+       bo = malloc(3*count*sizeof(*bo));
+       igt_assert(bo);
+
+       for (n = 0; n < 2*count; n++)
+               bo[n] = gem_create(fd, size);
+
+       sel = bo + n;
+       for (fail = 0, m = 0; fail < 10; fail++) {
+               for (pass = 0; pass < 100; pass++) {
+                       for (n = 0; n < count; n++, m += 7)
+                               sel[n] = bo[m%(2*count)];
+                       copy(fd, sel[0], sel[1], sel, count, 0);
+               }
+               copy(fd, bo[0], bo[0], bo, 2*count, ENOSPC);
+       }
+
+       for (n = 0; n < 2*count; n++)
+               gem_close(fd, bo[n]);
+       free(bo);
+}
+
+static void major_evictions(int fd, int size, int count)
+{
+       int n, m, loop;
+       uint32_t *bo;
+
+       igt_require((uint64_t)count * size / (1024 * 1024) < intel_get_total_ram_mb() * 9 / 10);
+
+       bo = malloc(count*sizeof(*bo));
+       igt_assert(bo);
+
+       for (n = 0; n < count; n++)
+               bo[n] = gem_create(fd, size);
+
+       for (loop = 0, m = 0; loop < 100; loop++, m += 17) {
+               n = m % count;
+               copy(fd, bo[n], bo[n], &bo[n], 1, 0);
+       }
+
+       for (n = 0; n < count; n++)
+               gem_close(fd, bo[n]);
+       free(bo);
+}
+
+int main(int argc, char **argv)
+{
+       int fd, size, count;
+
+       igt_skip_on_simulation();
+
+       fd = drm_open_any();
+
+       size = 1024 * 1024;
+       count = 3*gem_aperture_size(fd) / size / 4;
+       minor_evictions(fd, size, count);
+
+       size = 3*gem_aperture_size(fd) / 4;
+       count = 4;
+       major_evictions(fd, size, count);
+
+       close(fd);
+       return 0;
+}