If we fail at punit communication, include both the mbox address and the value we tried to write so that we can identify the invalid sequence.
Signed-off-by: Chris Wilson <[email protected]> Cc: Daniel Vetter <[email protected]> --- drivers/gpu/drm/i915/intel_pm.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 48785ef75d33..8711c1f04079 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -8831,6 +8831,7 @@ static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv) case GEN6_PCODE_SUCCESS: return 0; case GEN6_PCODE_UNIMPLEMENTED_CMD: + return -ENODEV; case GEN6_PCODE_ILLEGAL_CMD: return -ENXIO; case GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE: @@ -8878,7 +8879,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val */ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { - DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); + DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps\n", + mbox, __builtin_return_address(0)); return -EAGAIN; } @@ -8889,7 +8891,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val if (__intel_wait_for_register_fw(dev_priv, GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0, 500, 0, NULL)) { - DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); + DRM_ERROR("timeout waiting for pcode read (from mbox %x) to finish for %ps\n", + mbox, __builtin_return_address(0)); return -ETIMEDOUT; } @@ -8902,8 +8905,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val status = gen6_check_mailbox_status(dev_priv); if (status) { - DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed: %d\n", - status); + DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n", + mbox, __builtin_return_address(0), status); return status; } @@ -8923,7 +8926,8 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, */ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { - DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); + DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps\n", + val, mbox, __builtin_return_address(0)); return -EAGAIN; } @@ -8934,7 +8938,8 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, if (__intel_wait_for_register_fw(dev_priv, GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0, 500, 0, NULL)) { - DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); + DRM_ERROR("timeout waiting for pcode write of 0x%08x to mbox %x to finish for %ps\n", + val, mbox, __builtin_return_address(0)); return -ETIMEDOUT; } @@ -8946,8 +8951,8 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, status = gen6_check_mailbox_status(dev_priv); if (status) { - DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed: %d\n", - status); + DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n", + val, mbox, __builtin_return_address(0), status); return status; } -- 2.13.3 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
