From 8fc2a4e427991433ea6358117fdbcc07494ff8c5 Mon Sep 17 00:00:00 2001 From: Arkadiusz Hiler Date: Tue, 14 Mar 2017 15:28:12 +0100 Subject: [PATCH] drm/i915/uc: Simplify firmware path handling Currently fw->path values can represent one of three possible states: 1) NULL - device without the uC 2) '\0' - device with the uC but have no firmware 3) else - device with the uC and we have firmware Second case is used only to WARN at a later stage. We can WARN right away and merge cases 1 and 2. Code can be even further simplified and common (HuC/GuC logic) happening right before the fetch can be offloaded to the common function. v2: fewer temporary variables, more straightforward flow (M. Wajdeczko) v3: DRM_ERROR instead of WARN (M. Wajdeczko) v4: coding standard (J. Lahtinen) v5: non-trivial rebase v6: remove path check, we are checking fetch status (M. Wajdeczko) Cc: Anusha Srivatsa Cc: Tvrtko Ursulin Cc: Michal Winiarski Cc: Michal Wajdeczko Cc: Joonas Lahtinen Signed-off-by: Arkadiusz Hiler Reviewed-by: Tvrtko Ursulin Signed-off-by: Joonas Lahtinen --- drivers/gpu/drm/i915/intel_guc_loader.c | 36 ++++++++----------------- drivers/gpu/drm/i915/intel_huc.c | 21 +++++---------- drivers/gpu/drm/i915/intel_uc.c | 4 ++- 3 files changed, 20 insertions(+), 41 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c index 0a29c1b79c2f..d731f68fab9c 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -368,13 +368,6 @@ int intel_guc_init_hw(struct intel_guc *guc) intel_uc_fw_status_repr(guc->fw.fetch_status), intel_uc_fw_status_repr(guc->fw.load_status)); - if (!fw_path) { - return -ENXIO; - } else if (*fw_path == '\0') { - WARN(1, "No GuC firmware known for this platform!\n"); - return -ENODEV; - } - if (guc->fw.fetch_status != INTEL_UC_FIRMWARE_SUCCESS) return -EIO; @@ -399,7 +392,6 @@ int intel_guc_init_hw(struct intel_guc *guc) return 0; } - /** * intel_guc_init_fw() - select and prepare firmware for loading * @guc: intel_guc struct @@ -412,37 +404,31 @@ int intel_guc_init_hw(struct intel_guc *guc) void intel_guc_init_fw(struct intel_guc *guc) { struct drm_i915_private *dev_priv = guc_to_i915(guc); - const char *fw_path; + + guc->fw.path = NULL; + guc->fw.fetch_status = INTEL_UC_FIRMWARE_NONE; + guc->fw.load_status = INTEL_UC_FIRMWARE_NONE; + guc->fw.fw = INTEL_UC_FW_TYPE_GUC; if (IS_SKYLAKE(dev_priv)) { - fw_path = I915_SKL_GUC_UCODE; + guc->fw.path = I915_SKL_GUC_UCODE; guc->fw.major_ver_wanted = SKL_FW_MAJOR; guc->fw.minor_ver_wanted = SKL_FW_MINOR; } else if (IS_BROXTON(dev_priv)) { - fw_path = I915_BXT_GUC_UCODE; + guc->fw.path = I915_BXT_GUC_UCODE; guc->fw.major_ver_wanted = BXT_FW_MAJOR; guc->fw.minor_ver_wanted = BXT_FW_MINOR; } else if (IS_KABYLAKE(dev_priv)) { - fw_path = I915_KBL_GUC_UCODE; + guc->fw.path = I915_KBL_GUC_UCODE; guc->fw.major_ver_wanted = KBL_FW_MAJOR; guc->fw.minor_ver_wanted = KBL_FW_MINOR; } else { - fw_path = ""; /* unknown device */ - } - - guc->fw.path = fw_path; - guc->fw.fetch_status = INTEL_UC_FIRMWARE_NONE; - guc->fw.load_status = INTEL_UC_FIRMWARE_NONE; - - if (fw_path == NULL) - return; - if (*fw_path == '\0') + DRM_ERROR("No GuC firmware known for platform with GuC!\n"); + i915.enable_guc_loading = 0; return; + } - guc->fw.fetch_status = INTEL_UC_FIRMWARE_PENDING; - DRM_DEBUG_DRIVER("GuC firmware pending, path %s\n", fw_path); intel_uc_prepare_fw(dev_priv, &guc->fw); - /* status must now be FAIL or SUCCESS */ } /** diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index 168aab1e15da..5fadd55790eb 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -155,7 +155,6 @@ static int huc_ucode_xfer(struct drm_i915_private *dev_priv) void intel_huc_init_fw(struct intel_huc *huc) { struct drm_i915_private *dev_priv = huc_to_i915(huc); - const char *fw_path = NULL; huc->fw.path = NULL; huc->fw.fetch_status = INTEL_UC_FIRMWARE_NONE; @@ -163,29 +162,21 @@ void intel_huc_init_fw(struct intel_huc *huc) huc->fw.fw = INTEL_UC_FW_TYPE_HUC; if (IS_SKYLAKE(dev_priv)) { - fw_path = I915_SKL_HUC_UCODE; + huc->fw.path = I915_SKL_HUC_UCODE; huc->fw.major_ver_wanted = SKL_HUC_FW_MAJOR; huc->fw.minor_ver_wanted = SKL_HUC_FW_MINOR; } else if (IS_BROXTON(dev_priv)) { - fw_path = I915_BXT_HUC_UCODE; + huc->fw.path = I915_BXT_HUC_UCODE; huc->fw.major_ver_wanted = BXT_HUC_FW_MAJOR; huc->fw.minor_ver_wanted = BXT_HUC_FW_MINOR; } else if (IS_KABYLAKE(dev_priv)) { - fw_path = I915_KBL_HUC_UCODE; + huc->fw.path = I915_KBL_HUC_UCODE; huc->fw.major_ver_wanted = KBL_HUC_FW_MAJOR; huc->fw.minor_ver_wanted = KBL_HUC_FW_MINOR; - } - - huc->fw.path = fw_path; - - if (fw_path == NULL) + } else { + DRM_ERROR("No HuC firmware known for platform with HuC!\n"); return; - - huc->fw.fetch_status = INTEL_UC_FIRMWARE_PENDING; - - DRM_DEBUG_DRIVER("HuC firmware pending, path %s\n", fw_path); - - WARN(huc->fw.path == NULL, "HuC present but no fw path\n"); + } intel_uc_prepare_fw(dev_priv, &huc->fw); } diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index 69f21cc5c166..4b85a0f7efd1 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -268,8 +268,10 @@ void intel_uc_prepare_fw(struct drm_i915_private *dev_priv, size_t size; int err; + uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING; + DRM_DEBUG_DRIVER("before requesting firmware: uC fw fetch status %s\n", - intel_uc_fw_status_repr(uc_fw->fetch_status)); + intel_uc_fw_status_repr(uc_fw->fetch_status)); err = request_firmware(&fw, uc_fw->path, &pdev->dev); if (err) -- 2.20.1