tests: basic ring<->cpu and ring<->ring tests

Using a dummy reloc that doesn't matter to trick the kernel into
synchroizing the rings.

v2: properly apply MI_NOOP workaround to MI_FLUSH_DW and
switch to MI_COND_BATCH_BUFFER_END as a dummy command on the
render ring to avoid PIPE_CONTROL errata.

v3: somebody clever decided that in C, you cound from 1,
i.e. I915_EXEC_RENDER == 1. It works now ...

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

diff --git a/lib/intel_chipset.h b/lib/intel_chipset.h
index a38f661..35edaf7 100755 (executable)
--- a/lib/intel_chipset.h
+++ b/lib/intel_chipset.h
@@ -169,6 +169,10 @@
 #define HAS_BLT_RING(devid)    (IS_GEN6(devid) || \
                                 IS_GEN7(devid))
 
+#define HAS_BSD_RING(devid)    (IS_GEN5(devid) || \
+                                IS_GEN6(devid) || \
+                                IS_GEN7(devid))
+
 #define IS_BROADWATER(devid)   (devid == PCI_CHIP_I946_GZ || \
                                 devid == PCI_CHIP_I965_G_1 || \
                                 devid == PCI_CHIP_I965_Q || \

diff --git a/tests/Makefile.am b/tests/Makefile.am
index a1581fd..675dcfd 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -46,6 +46,8 @@ TESTS = getversion \
        gem_storedw_loop_blt \
        gem_storedw_loop_bsd \
        gem_storedw_batches_loop \
+       gem_dummy_reloc_loop \
+       gem_ring_sync_loop \
        $(NULL)
 
 HANG = \

diff --git a/tests/gem_dummy_reloc_loop.c b/tests/gem_dummy_reloc_loop.c
new file mode 100644 (file)
index 0000000..bec54e1
--- /dev/null
+++ b/tests/gem_dummy_reloc_loop.c
@@ -0,0 +1,195 @@
+/*
+ * 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;
+
+/*
+ * Testcase: Basic check of ring<->cpu sync using a dummy reloc
+ *
+ * The last test (that randomly switches the ring) seems to be pretty effective
+ * at hitting the missed irq bug that's worked around with the HWSTAM irq write.
+ */
+
+
+#define MI_COND_BATCH_BUFFER_END       (0x36<<23 | 1)
+#define MI_DO_COMPARE                  (1<<21)
+static void
+dummy_reloc_loop(int ring)
+{
+       int i;
+
+       for (i = 0; i < 0x100000; i++) {
+               if (ring == I915_EXEC_RENDER) {
+                       BEGIN_BATCH(4);
+                       OUT_BATCH(MI_COND_BATCH_BUFFER_END | MI_DO_COMPARE);
+                       OUT_BATCH(0xffffffff); /* compare dword */
+                       OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
+                                       I915_GEM_DOMAIN_RENDER, 0);
+                       OUT_BATCH(MI_NOOP);
+                       ADVANCE_BATCH();
+               } else {
+                       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_on_ring(batch, ring);
+
+               drm_intel_bo_map(target_buffer, 0);
+               // map to force completion
+               drm_intel_bo_unmap(target_buffer);
+       }
+}
+
+static void
+dummy_reloc_loop_random_ring(void)
+{
+       int i;
+
+       srandom(0xdeadbeef);
+
+       for (i = 0; i < 0x100000; i++) {
+               int ring = random() % 3 + 1;
+
+               if (ring == I915_EXEC_RENDER) {
+                       BEGIN_BATCH(4);
+                       OUT_BATCH(MI_COND_BATCH_BUFFER_END | MI_DO_COMPARE);
+                       OUT_BATCH(0xffffffff); /* compare dword */
+                       OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
+                                       I915_GEM_DOMAIN_RENDER, 0);
+                       OUT_BATCH(MI_NOOP);
+                       ADVANCE_BATCH();
+               } else {
+                       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_on_ring(batch, ring);
+
+               drm_intel_bo_map(target_buffer, 0);
+               // map to force waiting on rendering
+               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);
+       }
+
+       fprintf(stderr, "running dummy loop on render\n");
+       dummy_reloc_loop(I915_EXEC_RENDER);
+       fprintf(stderr, "dummy loop run on render completed\n");
+
+       if (!HAS_BSD_RING(devid))
+               goto skip;
+
+       sleep(2);
+       fprintf(stderr, "running dummy loop on bsd\n");
+       dummy_reloc_loop(I915_EXEC_BSD);
+       fprintf(stderr, "dummy loop run on bsd completed\n");
+
+       if (!HAS_BLT_RING(devid))
+               goto skip;
+
+       sleep(2);
+       fprintf(stderr, "running dummy loop on blt\n");
+       dummy_reloc_loop(I915_EXEC_BLT);
+       fprintf(stderr, "dummy loop run on blt completed\n");
+
+       sleep(2);
+       fprintf(stderr, "running dummy loop on random rings\n");
+       dummy_reloc_loop_random_ring();
+       fprintf(stderr, "dummy loop run on random rings completed\n");
+
+skip:
+       drm_intel_bo_unreference(target_buffer);
+       intel_batchbuffer_free(batch);
+       drm_intel_bufmgr_destroy(bufmgr);
+
+out:
+       close(fd);
+
+       return 0;
+}

diff --git a/tests/gem_ring_sync_loop.c b/tests/gem_ring_sync_loop.c
new file mode 100644 (file)
index 0000000..7837557
--- /dev/null
+++ b/tests/gem_ring_sync_loop.c
@@ -0,0 +1,140 @@
+/*
+ * 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;
+
+/*
+ * Testcase: Basic check of ring<->ring sync using a dummy reloc
+ *
+ * Extremely efficient at catching missed irqs with semaphores=0 ...
+ */
+
+#define MI_COND_BATCH_BUFFER_END       (0x36<<23 | 1)
+#define MI_DO_COMPARE                  (1<<21)
+
+static void
+store_dword_loop(int ring)
+{
+       int i;
+
+       srandom(0xdeadbeef);
+
+       for (i = 0; i < 0x100000; i++) {
+               int ring = random() % 3 + 1;
+
+               if (ring == I915_EXEC_RENDER) {
+                       BEGIN_BATCH(4);
+                       OUT_BATCH(MI_COND_BATCH_BUFFER_END | MI_DO_COMPARE);
+                       OUT_BATCH(0xffffffff); /* compare dword */
+                       OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
+                                       I915_GEM_DOMAIN_RENDER, 0);
+                       OUT_BATCH(MI_NOOP);
+                       ADVANCE_BATCH();
+               } else {
+                       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_on_ring(batch, ring);
+       }
+
+       drm_intel_bo_map(target_buffer, 0);
+       // map to force waiting on rendering
+       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, "inter ring check needs gen6+\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);
+       }
+
+       store_dword_loop(I915_EXEC_RENDER);
+
+       drm_intel_bo_unreference(target_buffer);
+       intel_batchbuffer_free(batch);
+       drm_intel_bufmgr_destroy(bufmgr);
+
+out:
+       close(fd);
+
+       return 0;
+}