Message ID | 20190718014329.8107-4-lyude@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | DP MST Refactors + debugging tools + suspend/resume reprobing | expand |
On Wed, Jul 17, 2019 at 09:42:26PM -0400, Lyude Paul wrote: > Yes, apparently we've been testing this for every single driver load for > quite a long time now. At least that means our PBN calculation is solid! > > Anyway, introduce self tests for MST and move this into there. > > 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> > Signed-off-by: Lyude Paul <lyude@redhat.com> More official unit tests, yay! Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> > --- > drivers/gpu/drm/drm_dp_mst_topology.c | 27 -------------- > drivers/gpu/drm/selftests/Makefile | 2 +- > .../gpu/drm/selftests/drm_modeset_selftests.h | 1 + > .../drm/selftests/test-drm_dp_mst_helper.c | 36 +++++++++++++++++++ > .../drm/selftests/test-drm_modeset_common.h | 1 + > 5 files changed, 39 insertions(+), 28 deletions(-) > create mode 100644 drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c > > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c > index d7c3d9233834..9e382117896d 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -45,7 +45,6 @@ > */ > static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr, > char *buf); > -static int test_calc_pbn_mode(void); > > static void drm_dp_mst_topology_put_port(struct drm_dp_mst_port *port); > > @@ -3439,30 +3438,6 @@ int drm_dp_calc_pbn_mode(int clock, int bpp) > } > EXPORT_SYMBOL(drm_dp_calc_pbn_mode); > > -static int test_calc_pbn_mode(void) > -{ > - int ret; > - ret = drm_dp_calc_pbn_mode(154000, 30); > - if (ret != 689) { > - DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", > - 154000, 30, 689, ret); > - return -EINVAL; > - } > - ret = drm_dp_calc_pbn_mode(234000, 30); > - if (ret != 1047) { > - DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", > - 234000, 30, 1047, ret); > - return -EINVAL; > - } > - ret = drm_dp_calc_pbn_mode(297000, 24); > - if (ret != 1063) { > - DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", > - 297000, 24, 1063, ret); > - return -EINVAL; > - } > - return 0; > -} > - > /* we want to kick the TX after we've ack the up/down IRQs. */ > static void drm_dp_mst_kick_tx(struct drm_dp_mst_topology_mgr *mgr) > { > @@ -3898,8 +3873,6 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, > if (!mgr->proposed_vcpis) > return -ENOMEM; > set_bit(0, &mgr->payload_mask); > - if (test_calc_pbn_mode() < 0) > - DRM_ERROR("MST PBN self-test failed\n"); > > mst_state = kzalloc(sizeof(*mst_state), GFP_KERNEL); > if (mst_state == NULL) > diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile > index aae88f8a016c..d2137342b371 100644 > --- a/drivers/gpu/drm/selftests/Makefile > +++ b/drivers/gpu/drm/selftests/Makefile > @@ -1,6 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0-only > test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \ > test-drm_format.o test-drm_framebuffer.o \ > - test-drm_damage_helper.o > + test-drm_damage_helper.o test-drm_dp_mst_helper.o > > obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o > diff --git a/drivers/gpu/drm/selftests/drm_modeset_selftests.h b/drivers/gpu/drm/selftests/drm_modeset_selftests.h > index 464753746013..dec3ee3ec96f 100644 > --- a/drivers/gpu/drm/selftests/drm_modeset_selftests.h > +++ b/drivers/gpu/drm/selftests/drm_modeset_selftests.h > @@ -32,3 +32,4 @@ selftest(damage_iter_damage_one_intersect, igt_damage_iter_damage_one_intersect) > selftest(damage_iter_damage_one_outside, igt_damage_iter_damage_one_outside) > selftest(damage_iter_damage_src_moved, igt_damage_iter_damage_src_moved) > selftest(damage_iter_damage_not_visible, igt_damage_iter_damage_not_visible) > +selftest(dp_mst_calc_pbn_mode, igt_dp_mst_calc_pbn_mode) > diff --git a/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c > new file mode 100644 > index 000000000000..51b2486ec917 > --- /dev/null > +++ b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c > @@ -0,0 +1,36 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Test cases for for the DRM DP MST helpers > + */ > + > +#define pr_fmt(fmt) "drm_dp_mst_helper: " fmt > + > +#include <drm/drm_dp_mst_helper.h> > +#include <drm/drm_print.h> > + > +#include "test-drm_modeset_common.h" > + > +int igt_dp_mst_calc_pbn_mode(void *ignored) > +{ > + int pbn, i; > + const struct { > + int rate; > + int bpp; > + int expected; > + } test_params[] = { > + { 154000, 30, 689 }, > + { 234000, 30, 1047 }, > + { 297000, 24, 1063 }, > + }; > + > + for (i = 0; i < ARRAY_SIZE(test_params); i++) { > + pbn = drm_dp_calc_pbn_mode(test_params[i].rate, > + test_params[i].bpp); > + FAIL(pbn != test_params[i].expected, > + "Expected PBN %d for clock %d bpp %d, got %d\n", > + test_params[i].expected, test_params[i].rate, > + test_params[i].bpp, pbn); > + } > + > + return 0; > +} > diff --git a/drivers/gpu/drm/selftests/test-drm_modeset_common.h b/drivers/gpu/drm/selftests/test-drm_modeset_common.h > index 8c76f09c12d1..590bda35a683 100644 > --- a/drivers/gpu/drm/selftests/test-drm_modeset_common.h > +++ b/drivers/gpu/drm/selftests/test-drm_modeset_common.h > @@ -39,5 +39,6 @@ int igt_damage_iter_damage_one_intersect(void *ignored); > int igt_damage_iter_damage_one_outside(void *ignored); > int igt_damage_iter_damage_src_moved(void *ignored); > int igt_damage_iter_damage_not_visible(void *ignored); > +int igt_dp_mst_calc_pbn_mode(void *ignored); > > #endif > -- > 2.21.0 >
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index d7c3d9233834..9e382117896d 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -45,7 +45,6 @@ */ static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr, char *buf); -static int test_calc_pbn_mode(void); static void drm_dp_mst_topology_put_port(struct drm_dp_mst_port *port); @@ -3439,30 +3438,6 @@ int drm_dp_calc_pbn_mode(int clock, int bpp) } EXPORT_SYMBOL(drm_dp_calc_pbn_mode); -static int test_calc_pbn_mode(void) -{ - int ret; - ret = drm_dp_calc_pbn_mode(154000, 30); - if (ret != 689) { - DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", - 154000, 30, 689, ret); - return -EINVAL; - } - ret = drm_dp_calc_pbn_mode(234000, 30); - if (ret != 1047) { - DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", - 234000, 30, 1047, ret); - return -EINVAL; - } - ret = drm_dp_calc_pbn_mode(297000, 24); - if (ret != 1063) { - DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", - 297000, 24, 1063, ret); - return -EINVAL; - } - return 0; -} - /* we want to kick the TX after we've ack the up/down IRQs. */ static void drm_dp_mst_kick_tx(struct drm_dp_mst_topology_mgr *mgr) { @@ -3898,8 +3873,6 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, if (!mgr->proposed_vcpis) return -ENOMEM; set_bit(0, &mgr->payload_mask); - if (test_calc_pbn_mode() < 0) - DRM_ERROR("MST PBN self-test failed\n"); mst_state = kzalloc(sizeof(*mst_state), GFP_KERNEL); if (mst_state == NULL) diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile index aae88f8a016c..d2137342b371 100644 --- a/drivers/gpu/drm/selftests/Makefile +++ b/drivers/gpu/drm/selftests/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \ test-drm_format.o test-drm_framebuffer.o \ - test-drm_damage_helper.o + test-drm_damage_helper.o test-drm_dp_mst_helper.o obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o diff --git a/drivers/gpu/drm/selftests/drm_modeset_selftests.h b/drivers/gpu/drm/selftests/drm_modeset_selftests.h index 464753746013..dec3ee3ec96f 100644 --- a/drivers/gpu/drm/selftests/drm_modeset_selftests.h +++ b/drivers/gpu/drm/selftests/drm_modeset_selftests.h @@ -32,3 +32,4 @@ selftest(damage_iter_damage_one_intersect, igt_damage_iter_damage_one_intersect) selftest(damage_iter_damage_one_outside, igt_damage_iter_damage_one_outside) selftest(damage_iter_damage_src_moved, igt_damage_iter_damage_src_moved) selftest(damage_iter_damage_not_visible, igt_damage_iter_damage_not_visible) +selftest(dp_mst_calc_pbn_mode, igt_dp_mst_calc_pbn_mode) diff --git a/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c new file mode 100644 index 000000000000..51b2486ec917 --- /dev/null +++ b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Test cases for for the DRM DP MST helpers + */ + +#define pr_fmt(fmt) "drm_dp_mst_helper: " fmt + +#include <drm/drm_dp_mst_helper.h> +#include <drm/drm_print.h> + +#include "test-drm_modeset_common.h" + +int igt_dp_mst_calc_pbn_mode(void *ignored) +{ + int pbn, i; + const struct { + int rate; + int bpp; + int expected; + } test_params[] = { + { 154000, 30, 689 }, + { 234000, 30, 1047 }, + { 297000, 24, 1063 }, + }; + + for (i = 0; i < ARRAY_SIZE(test_params); i++) { + pbn = drm_dp_calc_pbn_mode(test_params[i].rate, + test_params[i].bpp); + FAIL(pbn != test_params[i].expected, + "Expected PBN %d for clock %d bpp %d, got %d\n", + test_params[i].expected, test_params[i].rate, + test_params[i].bpp, pbn); + } + + return 0; +} diff --git a/drivers/gpu/drm/selftests/test-drm_modeset_common.h b/drivers/gpu/drm/selftests/test-drm_modeset_common.h index 8c76f09c12d1..590bda35a683 100644 --- a/drivers/gpu/drm/selftests/test-drm_modeset_common.h +++ b/drivers/gpu/drm/selftests/test-drm_modeset_common.h @@ -39,5 +39,6 @@ int igt_damage_iter_damage_one_intersect(void *ignored); int igt_damage_iter_damage_one_outside(void *ignored); int igt_damage_iter_damage_src_moved(void *ignored); int igt_damage_iter_damage_not_visible(void *ignored); +int igt_dp_mst_calc_pbn_mode(void *ignored); #endif
Yes, apparently we've been testing this for every single driver load for quite a long time now. At least that means our PBN calculation is solid! Anyway, introduce self tests for MST and move this into there. 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> Signed-off-by: Lyude Paul <lyude@redhat.com> --- drivers/gpu/drm/drm_dp_mst_topology.c | 27 -------------- drivers/gpu/drm/selftests/Makefile | 2 +- .../gpu/drm/selftests/drm_modeset_selftests.h | 1 + .../drm/selftests/test-drm_dp_mst_helper.c | 36 +++++++++++++++++++ .../drm/selftests/test-drm_modeset_common.h | 1 + 5 files changed, 39 insertions(+), 28 deletions(-) create mode 100644 drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c