[Piglit] [PATCH] cl: Add test for the r600g mapping bug

[Tom Stellard]

On Mon, May 19, 2014 at 06:23:30PM +0200, Bruno Jiménez wrote:
> ---
>  tests/cl.py                        |  1 +
>  tests/cl/custom/CMakeLists.cl.txt  |  1 +
>  tests/cl/custom/r600-mapping-bug.c | 95 ++++++++++++++++++++++++++++++++++++++
>  3 files changed, 97 insertions(+)
>  create mode 100644 tests/cl/custom/r600-mapping-bug.c
> 
> diff --git a/tests/cl.py b/tests/cl.py
> index a954337..e41d115 100644
> --- a/tests/cl.py
> +++ b/tests/cl.py
> @@ -44,6 +44,7 @@ profile.tests['Program'] = program
>  add_plain_test(custom, 'Run simple kernel', ['cl-custom-run-simple-kernel'])
>  add_plain_test(custom, 'Flush after enqueue kernel', ['cl-custom-flush-after-enqueue-kernel'])
>  add_plain_test(custom, 'r600 create release buffer bug', ['cl-custom-r600-create-release-buffer-bug'])
> +add_plain_test(custom, 'r600 mapping bug', ['cl-custom-r600-mapping-bug'])
>  add_plain_test(custom, 'Buffer flags', ['cl-custom-buffer-flags'])
>  
>  # API
> diff --git a/tests/cl/custom/CMakeLists.cl.txt b/tests/cl/custom/CMakeLists.cl.txt
> index 1843e19..c4ebc00 100644
> --- a/tests/cl/custom/CMakeLists.cl.txt
> +++ b/tests/cl/custom/CMakeLists.cl.txt
> @@ -3,3 +3,4 @@ piglit_cl_add_custom_test (flush-after-enqueue-kernel flush-after-enqueue-kernel
>  piglit_cl_add_custom_test (r600-create-release-buffer-bug r600-create-release-buffer-bug.c)
>  piglit_cl_add_custom_test (buffer-flags buffer-flags.c)
>  piglit_cl_add_custom_test (use-sub-buffer-in-kernel use-sub-buffer-in-kernel.c)
> +piglit_cl_add_custom_test (r600-mapping-bug r600-mapping-bug.c)
> diff --git a/tests/cl/custom/r600-mapping-bug.c b/tests/cl/custom/r600-mapping-bug.c
> new file mode 100644
> index 0000000..0f9dc27
> --- /dev/null
> +++ b/tests/cl/custom/r600-mapping-bug.c
> @@ -0,0 +1,95 @@
> +/*
> + * Copyright 2014 Bruno Jiménez
> + *
> + * 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: Bruno Jiménez <brunojimen at gmail.com>
> + *
> + */
> +
> +#include "piglit-framework-cl-custom.h"
> +
> +PIGLIT_CL_CUSTOM_TEST_CONFIG_BEGIN
> +
> +	config.name = "Mapping Bug Checker (Pool Relocation)";
> +	config.run_per_device = true;
> +
> +PIGLIT_CL_CUSTOM_TEST_CONFIG_END
> +
> +#define BUFFER_ELEMENTS 1024
> +
> +enum piglit_result
> +piglit_cl_test(const int argc,
> +			   const char **argv,
> +			   const struct piglit_cl_custom_test_config *config,
> +			   const struct piglit_cl_custom_test_env *env)
> +{
> +	unsigned int i;
> +	cl_int err;
> +	cl_mem buffer0, buffer1;
> +	uint32_t local_data0[BUFFER_ELEMENTS];
> +
> +	uint32_t *map0, *map1;
> +
> +	piglit_cl_context context = NULL;
> +	cl_command_queue queue;
> +
> +	context = piglit_cl_create_context(env->platform_id, &env->device_id, 1);
> +	buffer0 = piglit_cl_create_buffer(context, CL_MEM_READ_WRITE,
> +				sizeof(local_data0));
> +
> +	/* NOTE: buffer1 *MUST* be big enough to force the buffer pool to get
> +	 * relocated. With current mesa code, 16 * 1024 dw is enough. */
> +	buffer1 = piglit_cl_create_buffer(context, CL_MEM_READ_WRITE,
> +				16 * sizeof(local_data0));
> +	queue = context->command_queues[0];
> +
> +	map0 = clEnqueueMapBuffer(queue, buffer0, CL_TRUE, CL_MAP_WRITE,
> +				0, sizeof(local_data0), 0, NULL, NULL, &err);
> +	if (err != CL_SUCCESS)
> +		return PIGLIT_FAIL;
> +
> +	map1 = clEnqueueMapBuffer(queue, buffer1, CL_TRUE, CL_MAP_WRITE,
> +				0, 16 * sizeof(local_data0), 0, NULL, NULL, &err);
> +	if (err != CL_SUCCESS)
> +		return PIGLIT_FAIL;
> +
> +	/* If we have hit the bug, now the map for buffer0 would point to a
> +	 * place in the GPU memory where buffer0 *WAS* before the pool got
> +	 * relocated. So writing to it means to write to somewhere random.
> +	 * if we read the contents of buffer0 afterwards, we should read
> +	 * garbage. */
> +
> +	memset(map0, 0x55, sizeof(local_data0));
> +
> +	clEnqueueUnmapMemObject(queue, buffer0, map0, 0, NULL, NULL);
> +	clEnqueueUnmapMemObject(queue, buffer1, map1, 0, NULL, NULL);
> +
> +	/* We read buffer0 and we check if it is all garbage, or
> +	 * all 0x55 */
> +	piglit_cl_read_whole_buffer(queue, buffer0, local_data0);

Don't you need clFlush() here?

> +	for (i = 0; i < BUFFER_ELEMENTS; i++) {
> +		if(local_data0[i] != 0x55555555) {
> +			return PIGLIT_FAIL;
> +		}
> +	}
> +
> +	return PIGLIT_PASS;
> +}
> -- 
> 1.9.3
> 
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