github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-02 19:43:40 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/i915/dsb: Dump the DSB command buffer when DSB fails

Browse Source 
Dump the full DSB command buffers and head/tail pointers if the
the DSB hasn't completed its job in time.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-4-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
This commit is contained in:
Ville Syrjälä 2023-06-06 22:14:48 +03:00
parent 61ae124009
commit 9055e73e8e
1 changed files with 30 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpu/drm/i915/display/intel_dsb.c
View File

@ -93,6 +93,22 @@ static bool assert_dsb_has_room(struct intel_dsb *dsb)
crtc->base.base.id, crtc->base.name, dsb->id);
}
static void intel_dsb_dump(struct intel_dsb *dsb)
{
struct intel_crtc *crtc = dsb->crtc;
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
const u32 *buf = dsb->cmd_buf;
int i;
drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] DSB %d commands {\n",
crtc->base.base.id, crtc->base.name, dsb->id);
for (i = 0; i < ALIGN(dsb->free_pos, 64 / 4); i += 4)
drm_dbg_kms(&i915->drm,
" 0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
i * 4, buf[i], buf[i+1], buf[i+2], buf[i+3]);
drm_dbg_kms(&i915->drm, "}\n");
}
static bool is_dsb_busy(struct drm_i915_private *i915, enum pipe pipe,
enum dsb_id id)
{
@ -258,10 +274,21 @@ void intel_dsb_wait(struct intel_dsb *dsb)
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
if (wait_for(!is_dsb_busy(dev_priv, pipe, dsb->id), 1))
if (wait_for(!is_dsb_busy(dev_priv, pipe, dsb->id), 1)) {
u32 offset = i915_ggtt_offset(dsb->vma);
intel_de_write_fw(dev_priv, DSB_CTRL(pipe, dsb->id),
DSB_ENABLE | DSB_HALT);
drm_err(&dev_priv->drm,
"[CRTC:%d:%s] DSB %d timed out waiting for idle\n",
crtc->base.base.id, crtc->base.name, dsb->id);
"[CRTC:%d:%s] DSB %d timed out waiting for idle (current head=0x%x, head=0x%x, tail=0x%x)\n",
crtc->base.base.id, crtc->base.name, dsb->id,
intel_de_read_fw(dev_priv, DSB_CURRENT_HEAD(pipe, dsb->id)) - offset,
intel_de_read_fw(dev_priv, DSB_HEAD(pipe, dsb->id)) - offset,
intel_de_read_fw(dev_priv, DSB_TAIL(pipe, dsb->id)) - offset);
intel_dsb_dump(dsb);
}
/* Attempt to reset it */
dsb->free_pos = 0;