Re: [PATCH i-g-t v3] tests/core_getparams: Create new test core_getparams

[Daniel Vetter <daniel@ffwll.ch>]

On Thu, Mar 12, 2015 at 05:26:25PM -0700, jeff.mcgee@intel.com wrote:
> From: Jeff McGee <jeff.mcgee@intel.com>
> 
> New test core_getparams consists of 2 subtests, each one testing
> the ability of userspace to query the correct value of a GT config
> attribute: subslice total or EU total. drm/i915 implementation of
> these queries is required for Cherryview and Gen9+ devices (non-
> simulated).
> 
> v2: Duplicate small amount of new libdrm functionality to avoid
>     bumping libdrm version requirement (Daniel). Convert some
>     igt_asserts to the appropriate comparison variants. Add a
>     test description.
> v3: Actually use the LOCAL GETPARAM defines. Otherwise can't build
>     against older libdrm as intended by v2.
> 
> For: VIZ-4636
> Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
> ---
>  tests/.gitignore       |   1 +
>  tests/Makefile.sources |   1 +
>  tests/core_getparams.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 169 insertions(+)
>  create mode 100644 tests/core_getparams.c
> 
> diff --git a/tests/.gitignore b/tests/.gitignore
> index 426cc67..c742308 100644
> --- a/tests/.gitignore
> +++ b/tests/.gitignore
> @@ -1,6 +1,7 @@
>  # Please keep sorted alphabetically
>  core_get_client_auth
>  core_getclient
> +core_getparams
>  core_getstats
>  core_getversion
>  drm_import_export
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 51e8376..999c8f8 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -15,6 +15,7 @@ NOUVEAU_TESTS_M = \
>  
>  TESTS_progs_M = \
>  	core_get_client_auth \
> +	core_getparams \

Sorry I missed this little one: core_ is for drm core stuff shared by all
drivers (i.e. even those not supporting gem or kms). getparam is an i915
specific thing, so imo better to have drv_ as a prefix.

For our naming conventions and igt test sections see the docs at

http://people.freedesktop.org/~danvet/igt/

For review I think signing up someone from the beignet team might be best.
Cheers, Daniel

>  	drv_suspend \
>  	drv_hangman \
>  	gem_bad_reloc \
> diff --git a/tests/core_getparams.c b/tests/core_getparams.c
> new file mode 100644
> index 0000000..2855d06
> --- /dev/null
> +++ b/tests/core_getparams.c
> @@ -0,0 +1,167 @@
> +/*
> + * 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:
> + *    Jeff McGee <jeff.mcgee@intel.com>
> + *
> + */
> +
> +#include <unistd.h>
> +#include <errno.h>
> +#include <xf86drm.h>
> +#include <i915_drm.h>
> +#include "drmtest.h"
> +#include "intel_chipset.h"
> +#include "intel_bufmgr.h"
> +
> +IGT_TEST_DESCRIPTION("Tests the export of parameters via DRM_IOCTL_I915_GETPARAM\n");
> +
> +int drm_fd;
> +int devid;
> +
> +static void
> +init(void)
> +{
> +	drm_fd = drm_open_any();
> +	devid = intel_get_drm_devid(drm_fd);
> +}
> +
> +static void
> +deinit(void)
> +{
> +	close(drm_fd);
> +}
> +
> +#define LOCAL_I915_PARAM_SUBSLICE_TOTAL	33
> +#define LOCAL_I915_PARAM_EU_TOTAL	34
> +
> +static int
> +getparam(int param, int *value)
> +{
> +	drm_i915_getparam_t gp;
> +	int ret;
> +
> +	memset(&gp, 0, sizeof(gp));
> +	gp.value = value;
> +	gp.param = param;
> +	ret = drmIoctl(drm_fd, DRM_IOCTL_I915_GETPARAM, &gp);
> +	if (ret)
> +		return -errno;
> +
> +	return 0;
> +}
> +
> +static void
> +subslice_total(void)
> +{
> +	unsigned int subslice_total = 0;
> +	int ret;
> +
> +	ret = getparam(LOCAL_I915_PARAM_SUBSLICE_TOTAL, (int*)&subslice_total);
> +
> +	if (ret) {
> +		/*
> +		 * These devices are not required to implement the
> +		 * interface. If they do not, -ENODEV must be returned.
> +		*/
> +		if ((intel_gen(devid) < 8) ||
> +		    IS_BROADWELL(devid) ||
> +		    igt_run_in_simulation()) {
> +			igt_assert_eq(ret, -ENODEV);
> +			igt_info("subslice total: unknown\n");
> +		/*
> +		 * All other devices must implement the interface, so
> +		 * fail them if we are here.
> +		*/
> +		} else {
> +			igt_assert_neq(ret, EINVAL); /* request not recognized? */
> +			igt_assert_neq(ret, ENODEV); /* device not supported? */
> +			igt_assert_eq(ret, 0); /* other error? */
> +		}
> +	} else {
> +		/*
> +		 * On success, just make sure the returned count value is
> +		 * non-zero. The validity of the count value for the given
> +		 * device is not checked.
> +		*/
> +		igt_assert_neq(subslice_total, 0);
> +		igt_info("subslice total: %u\n", subslice_total);
> +	}
> +}
> +
> +static void
> +eu_total(void)
> +{
> +	unsigned int eu_total = 0;
> +	int ret;
> +
> +	ret = getparam(LOCAL_I915_PARAM_EU_TOTAL, (int*)&eu_total);
> +
> +	if (ret) {
> +		/*
> +		 * These devices are not required to implement the
> +		 * interface. If they do not, -ENODEV must be returned.
> +		*/
> +		if ((intel_gen(devid) < 8) ||
> +		    IS_BROADWELL(devid) ||
> +		    igt_run_in_simulation()) {
> +			igt_assert_eq(ret, -ENODEV);
> +			igt_info("EU total: unknown\n");
> +		/*
> +		 * All other devices must implement the interface, so
> +		 * fail them if we are here.
> +		*/
> +		} else {
> +			igt_assert_neq(ret, EINVAL); /* request not recognized? */
> +			igt_assert_neq(ret, ENODEV); /* device not supported? */
> +			igt_assert_eq(ret, 0); /* other error? */
> +		}
> +	} else {
> +		/*
> +		 * On success, just make sure the returned count value is
> +		 * non-zero. The validity of the count value for the given
> +		 * device is not checked.
> +		*/
> +		igt_assert_neq(eu_total, 0);
> +		igt_info("EU total: %u\n", eu_total);
> +	}
> +}
> +
> +static void
> +exit_handler(int sig)
> +{
> +	deinit();
> +}
> +
> +igt_main
> +{
> +	igt_fixture {
> +		igt_install_exit_handler(exit_handler);
> +		init();
> +	}
> +
> +	igt_subtest("subslice-total")
> +		subslice_total();
> +
> +	igt_subtest("eu-total")
> +		eu_total();
> +}
> -- 
> 2.3.0
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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