diff options
| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2019-02-20 16:51:22 +0100 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@bootlin.com> | 2019-03-06 14:47:59 +0100 |
| commit | 531a1b622da9adbf9f084d2ac4bf6a9f6a9acf28 (patch) | |
| tree | 7feebf8898230a8b20fe529e5e3ff5f9290c7b5c /drivers/gpu/drm/vc4/vc4_drv.h | |
| parent | dbfbe717ccbb5b42815ef4bc35a66e2191b2e98d (diff) | |
drm/vc4: Report HVS underrun errors
Add a debugfs entry and helper for reporting HVS underrun errors as
well as helpers for masking and unmasking the underrun interrupts.
Add an IRQ handler and initial IRQ configuration.
Rework related register definitions to take the channel number.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-2-paul.kocialkowski@bootlin.com
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_drv.h')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_drv.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index ce1af06cc197b..6f86af1b3212e 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -184,6 +184,13 @@ struct vc4_dev { /* Bitmask of the current bin_alloc used for overflow memory. */ uint32_t bin_alloc_overflow; + /* Incremented when an underrun error happened after an atomic commit. + * This is particularly useful to detect when a specific modeset is too + * demanding in term of memory or HVS bandwidth which is hard to guess + * at atomic check time. + */ + atomic_t underrun; + struct work_struct overflow_mem_work; int power_refcount; @@ -767,6 +774,9 @@ void vc4_irq_reset(struct drm_device *dev); extern struct platform_driver vc4_hvs_driver; void vc4_hvs_dump_state(struct drm_device *dev); int vc4_hvs_debugfs_regs(struct seq_file *m, void *unused); +int vc4_hvs_debugfs_underrun(struct seq_file *m, void *unused); +void vc4_hvs_unmask_underrun(struct drm_device *dev, int channel); +void vc4_hvs_mask_underrun(struct drm_device *dev, int channel); /* vc4_kms.c */ int vc4_kms_load(struct drm_device *dev); |