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2f015ec6ea
Unfortunately the DP MST helpers do not have much in the way of debugging utilities. So, let's add some! This adds basic debugging output for down sideband requests that we send from the driver, so that we can actually discern what's happening when sideband requests timeout. Since there wasn't really a good way of testing that any of this worked, I ended up writing simple selftests that lightly test sideband message encoding and decoding as well. Enjoy! Changes since v1: * Clean up DO_TEST() and sideband_msg_req_encode_decode() - danvet * Get rid of pr_fmt(), just define a prefix string instead and use drm_printf() * Check highest bit of VCPI in drm_dp_decode_sideband_req() - danvet * Make the switch case order between drm_dp_decode_sideband_req() and drm_dp_encode_sideband_req() the same - danvet * Only check DRM_UT_DP - danvet * Clean up sideband_msg_req_equal() from selftests a bit, and add comments explaining why we can't just use memcmp - danvet Cc: Juston Li <juston.li@intel.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Harry Wentland <hwentlan@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190903204645.25487-8-lyude@redhat.com
46 lines
1.9 KiB
C
46 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __TEST_DRM_MODESET_COMMON_H__
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#define __TEST_DRM_MODESET_COMMON_H__
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#define FAIL(test, msg, ...) \
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do { \
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if (test) { \
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pr_err("%s/%u: " msg, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
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return -EINVAL; \
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} \
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} while (0)
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#define FAIL_ON(x) FAIL((x), "%s", "FAIL_ON(" __stringify(x) ")\n")
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int igt_check_plane_state(void *ignored);
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int igt_check_drm_format_block_width(void *ignored);
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int igt_check_drm_format_block_height(void *ignored);
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int igt_check_drm_format_min_pitch(void *ignored);
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int igt_check_drm_framebuffer_create(void *ignored);
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int igt_damage_iter_no_damage(void *ignored);
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int igt_damage_iter_no_damage_fractional_src(void *ignored);
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int igt_damage_iter_no_damage_src_moved(void *ignored);
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int igt_damage_iter_no_damage_fractional_src_moved(void *ignored);
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int igt_damage_iter_no_damage_not_visible(void *ignored);
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int igt_damage_iter_no_damage_no_crtc(void *ignored);
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int igt_damage_iter_no_damage_no_fb(void *ignored);
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int igt_damage_iter_simple_damage(void *ignored);
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int igt_damage_iter_single_damage(void *ignored);
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int igt_damage_iter_single_damage_intersect_src(void *ignored);
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int igt_damage_iter_single_damage_outside_src(void *ignored);
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int igt_damage_iter_single_damage_fractional_src(void *ignored);
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int igt_damage_iter_single_damage_intersect_fractional_src(void *ignored);
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int igt_damage_iter_single_damage_outside_fractional_src(void *ignored);
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int igt_damage_iter_single_damage_src_moved(void *ignored);
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int igt_damage_iter_single_damage_fractional_src_moved(void *ignored);
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int igt_damage_iter_damage(void *ignored);
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int igt_damage_iter_damage_one_intersect(void *ignored);
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int igt_damage_iter_damage_one_outside(void *ignored);
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int igt_damage_iter_damage_src_moved(void *ignored);
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int igt_damage_iter_damage_not_visible(void *ignored);
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int igt_dp_mst_calc_pbn_mode(void *ignored);
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int igt_dp_mst_sideband_msg_req_decode(void *ignored);
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#endif
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