diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_wopcm.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_wopcm.c b/drivers/gpu/drm/i915/intel_wopcm.c index a29e0c9e60a7..1fd1125f464b 100644 --- a/drivers/gpu/drm/i915/intel_wopcm.c +++ b/drivers/gpu/drm/i915/intel_wopcm.c @@ -105,14 +105,36 @@ static inline int gen9_check_dword_gap(u32 guc_wopcm_base, u32 guc_wopcm_size) return 0; } +static inline int gen9_check_huc_fw_fits(u32 guc_wopcm_size, u32 huc_fw_size) +{ + /* + * On Gen9 & CNL A0, hardware requires the total available GuC WOPCM + * size to be larger than or equal to HuC firmware size. Otherwise, + * firmware uploading would fail. + */ + if (huc_fw_size > guc_wopcm_size - GUC_WOPCM_RESERVED) { + DRM_ERROR("HuC FW (%uKiB) won't fit in GuC WOPCM (%uKiB).\n", + huc_fw_size / 1024, + (guc_wopcm_size - GUC_WOPCM_RESERVED) / 1024); + return -E2BIG; + } + + return 0; +} + static inline int check_hw_restriction(struct drm_i915_private *i915, - u32 guc_wopcm_base, u32 guc_wopcm_size) + u32 guc_wopcm_base, u32 guc_wopcm_size, + u32 huc_fw_size) { int err = 0; if (IS_GEN9(i915)) err = gen9_check_dword_gap(guc_wopcm_base, guc_wopcm_size); + if (!err && + (IS_GEN9(i915) || IS_CNL_REVID(i915, CNL_REVID_A0, CNL_REVID_A0))) + err = gen9_check_huc_fw_fits(guc_wopcm_size, huc_fw_size); + return err; } @@ -175,7 +197,8 @@ int intel_wopcm_init(struct intel_wopcm *wopcm) return -E2BIG; } - err = check_hw_restriction(i915, guc_wopcm_base, guc_wopcm_size); + err = check_hw_restriction(i915, guc_wopcm_base, guc_wopcm_size, + huc_fw_size); if (err) return err; |