[Intel-gfx] [PATCH I-g-t V2 1/2] tests: Add one ring sync case based on multi drm_fd to test ring semaphore sync under multi BSD rings
Daniel Vetter
daniel at ffwll.ch
Tue Apr 22 21:44:51 CEST 2014
On Tue, Apr 22, 2014 at 02:52:04PM +0300, Imre Deak wrote:
> On Tue, 2014-04-15 at 10:38 +0800, Zhao Yakui wrote:
> > The Broadwell GT3 machine has two independent BSD rings in kernel driver while
> > it is transparent to the user-space driver. In such case it needs to check
> > the ring sync between the two BSD rings. At the same time it also needs to
> > check the sync among the second BSD ring and the other rings.
> >
> > Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
> > ---
> > tests/Makefile.sources | 1 +
> > tests/gem_multi_bsd_sync_loop.c | 172 +++++++++++++++++++++++++++++++++++++++
> > 2 files changed, 173 insertions(+)
> > create mode 100644 tests/gem_multi_bsd_sync_loop.c
> >
> > diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> > index c957ace..7cd9ca8 100644
> > --- a/tests/Makefile.sources
> > +++ b/tests/Makefile.sources
> > @@ -105,6 +105,7 @@ TESTS_progs = \
> > gem_render_tiled_blits \
> > gem_ring_sync_copy \
> > gem_ring_sync_loop \
> > + gem_multi_bsd_sync_loop \
> > gem_seqno_wrap \
> > gem_set_tiling_vs_gtt \
> > gem_set_tiling_vs_pwrite \
> > diff --git a/tests/gem_multi_bsd_sync_loop.c b/tests/gem_multi_bsd_sync_loop.c
> > new file mode 100644
> > index 0000000..7f5b832
> > --- /dev/null
> > +++ b/tests/gem_multi_bsd_sync_loop.c
> > @@ -0,0 +1,172 @@
> > +/*
> > + * Copyright © 2014 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 at ffwll.ch> (based on gem_ring_sync_loop_*.c)
> > + * Zhao Yakui <yakui.zhao at intel.com>
> > + *
> > + */
> > +
> > +#include <stdlib.h>
> > +#include <stdio.h>
> > +#include <string.h>
> > +#include <fcntl.h>
> > +#include <inttypes.h>
> > +#include <errno.h>
> > +#include <sys/stat.h>
> > +#include <sys/time.h>
> > +#include "drm.h"
> > +#include "ioctl_wrappers.h"
> > +#include "drmtest.h"
> > +#include "intel_bufmgr.h"
> > +#include "intel_batchbuffer.h"
> > +#include "intel_io.h"
> > +#include "i830_reg.h"
> > +#include "intel_chipset.h"
> > +
> > +static drm_intel_bufmgr *bufmgr;
> > +struct intel_batchbuffer *batch;
> > +static drm_intel_bo *target_buffer;
> > +
> > +#define NUM_FD 50
> > +
> > +static int mfd[NUM_FD];
> > +static drm_intel_bufmgr *mbufmgr[NUM_FD];
> > +static struct intel_batchbuffer *mbatch[NUM_FD];
> > +static drm_intel_bo *mbuffer[NUM_FD];
> > +
> > +
> > +/*
> > + * 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 fd)
> > +{
> > + int i;
> > + int num_rings = gem_get_num_rings(fd);
> > +
> > + srandom(0xdeadbeef);
> > +
> > + for (i = 0; i < SLOW_QUICK(0x100000, 10); i++) {
> > + int ring, mindex;
> > + ring = random() % num_rings + 1;
> > + mindex = random() % NUM_FD;
> > + batch = mbatch[mindex];
> > + 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(mbuffer[mindex], 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(mbuffer[mindex], 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);
>
> This test looks the same as dummy_reloc_loop_random_ring_multi_fd() that
> you add in patch 2/2, except the above two calls. Unless I'm missing
> something else .. Is there any reason why we don't want to make this
> also a subtest of gem_dummy_reloc_loop.c to avoid duplicating all the
> setup here?
Historical accident since for the other rings we also have this
duplication between inter-ring sync tests and ring/cpu sync tests with
dummy relocs. I don't mind really ;-)
-Daniel
>
> --Imre
>
>
> > +}
> > +
> > +igt_simple_main
> > +{
> > + int fd;
> > + int devid;
> > + int i;
> > +
> > + fd = drm_open_any();
> > + devid = intel_get_drm_devid(fd);
> > + gem_require_ring(fd, I915_EXEC_BLT);
> > +
> > +
> > + bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
> > + igt_assert(bufmgr);
> > + drm_intel_bufmgr_gem_enable_reuse(bufmgr);
> > +
> > +
> > + target_buffer = drm_intel_bo_alloc(bufmgr, "target bo", 4096, 4096);
> > + igt_assert(target_buffer);
> > +
> > + /* Create multiple drm_fd and map one gem_object among multi drm_fd */
> > + {
> > + unsigned int target_flink;
> > + char buffer_name[32];
> > + if (dri_bo_flink(target_buffer, &target_flink)) {
> > + igt_assert(0);
> > + printf("fail to get flink for target buffer\n");
> > + goto fail_flink;
> > + }
> > + for (i = 0; i < NUM_FD; i++) {
> > + mfd[i] = 0;
> > + mbufmgr[i] = NULL;
> > + mbuffer[i] = NULL;
> > + }
> > + for (i = 0; i < NUM_FD; i++) {
> > + sprintf(buffer_name, "Target buffer %d\n", i);
> > + mfd[i] = drm_open_any();
> > + mbufmgr[i] = drm_intel_bufmgr_gem_init(mfd[i], 4096);
> > + igt_assert(mbufmgr[i]);
> > + drm_intel_bufmgr_gem_enable_reuse(mbufmgr[i]);
> > + mbatch[i] = intel_batchbuffer_alloc(mbufmgr[i], devid);
> > + igt_assert(mbufmgr[i]);
> > + mbuffer[i] = intel_bo_gem_create_from_name(mbufmgr[i], buffer_name, target_flink);
> > + igt_assert(mbuffer[i]);
> > + }
> > + }
> > +
> > + store_dword_loop(fd);
> > +
> > + {
> > + for (i = 0; i < NUM_FD; i++) {
> > + dri_bo_unreference(mbuffer[i]);
> > + intel_batchbuffer_free(mbatch[i]);
> > + drm_intel_bufmgr_destroy(mbufmgr[i]);
> > + close(mfd[i]);
> > + }
> > + }
> > + drm_intel_bo_unreference(target_buffer);
> > + drm_intel_bufmgr_destroy(bufmgr);
> > +
> > + close(fd);
> > + return;
> > +
> > +fail_flink:
> > + drm_intel_bo_unreference(target_buffer);
> > + drm_intel_bufmgr_destroy(bufmgr);
> > +
> > + close(fd);
> > +}
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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