From patchwork Thu Dec 29 19:07:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gustavo Sousa X-Patchwork-Id: 13083723 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 17BD7C4332F for ; Thu, 29 Dec 2022 19:08:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6B4A710E03B; Thu, 29 Dec 2022 19:08:10 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id E4E0F10E03B for ; Thu, 29 Dec 2022 19:08:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1672340887; x=1703876887; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=AGuLXp+JFseWzM48w0FQGbvuyYtB1M7o/hp1k3mo6d8=; b=Xrz3eaZEDGxg+GJAL/LwsTL0Aw3UiLt2WdnojAa5aMBFFhT6CIVpLTeQ N0UijG85vaiaemm0Y3a8ta2RdjNeBzVt3IBK/PcW8yB2iSHqvJShUyYTB hoJwE5LnkKQIwCiCLHkxi+TCNX6OHI+4toAeZWO/RM6e0dHSdOF18vixh Sg15wmUVgBnJcCy5YQkSmu1/I6H295sQJdOwobHcu5jtETgR/SeVF/D54 2rpu37qCUZrwoFMxMOdAuXR/3xDtq1n5GPFroOmN3GLK+ke/FriaKTqhV YdYAUeLF57KtPzlFEEsPGxFDCB63LF0A6+XwfKJUfOgc7u5nkgapIE86W w==; X-IronPort-AV: E=McAfee;i="6500,9779,10575"; a="319814136" X-IronPort-AV: E=Sophos;i="5.96,285,1665471600"; d="scan'208";a="319814136" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Dec 2022 11:08:06 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10575"; a="653687306" X-IronPort-AV: E=Sophos;i="5.96,285,1665471600"; d="scan'208";a="653687306" Received: from apreeth-mobl.amr.corp.intel.com (HELO gjsousa-mobl2.intel.com) ([10.212.93.151]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Dec 2022 11:08:04 -0800 From: Gustavo Sousa To: intel-gfx@lists.freedesktop.org Date: Thu, 29 Dec 2022 16:07:40 -0300 Message-Id: <20221229190740.45471-3-gustavo.sousa@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221229190740.45471-1-gustavo.sousa@intel.com> References: <20221229190740.45471-1-gustavo.sousa@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3 2/2] drm/i915/dmc: Prepare to use unversioned paths X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Lucas De Marchi , Rodrigo Vivi Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" New DMC releases in linux-firmware will stop using version number in blob filenames. This new convention provides the following benefits: 1. It simplifies code maintenance, as new DMC releases for a platform using the new convention will always use the same filename for the blob. 2. It allows DMC to be loaded even if the target system does not have the most recent firmware installed. Prepare the driver by: - Using the new convention for DMC_PATH() and renaming the currently used one to make it clear it is for the legacy scheme. - Implementing a fallback mechanism for future transitions from versioned to unversioned paths so that we do not cause a regression for systems not having the most up-to-date linux-firmware files. v2: - Keep using request_firmware() instead of firmware_request_nowarn(). (Jani) v3: - Keep current DMC paths instead of directly using unversioned ones, so that we do not disturb initrd generation. (Lucas, Rodrigo) References: https://lore.kernel.org/r/Y3081s7c5ksutpMW@intel.com Signed-off-by: Gustavo Sousa Cc: Jani Nikula Cc: Lucas De Marchi Cc: Rodrigo Vivi --- drivers/gpu/drm/i915/display/intel_dmc.c | 62 ++++++++++++++++++------ 1 file changed, 46 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c index 4124b3d37110..12f05b2d33a3 100644 --- a/drivers/gpu/drm/i915/display/intel_dmc.c +++ b/drivers/gpu/drm/i915/display/intel_dmc.c @@ -42,51 +42,59 @@ #define DMC_VERSION_MAJOR(version) ((version) >> 16) #define DMC_VERSION_MINOR(version) ((version) & 0xffff) -#define DMC_PATH(platform, major, minor) \ - "i915/" \ - __stringify(platform) "_dmc_ver" \ - __stringify(major) "_" \ +#define DMC_PATH(platform) \ + "i915/" __stringify(platform) "_dmc.bin" + +/* + * New DMC additions should not use this. This is used solely to remain + * compatible with systems that have not yet updated DMC blobs to use + * unversioned file names. + */ +#define DMC_LEGACY_PATH(platform, major, minor) \ + "i915/" \ + __stringify(platform) "_dmc_ver" \ + __stringify(major) "_" \ __stringify(minor) ".bin" #define DISPLAY_VER13_DMC_MAX_FW_SIZE 0x20000 #define DISPLAY_VER12_DMC_MAX_FW_SIZE ICL_DMC_MAX_FW_SIZE -#define DG2_DMC_PATH DMC_PATH(dg2, 2, 08) +#define DG2_DMC_PATH DMC_LEGACY_PATH(dg2, 2, 08) MODULE_FIRMWARE(DG2_DMC_PATH); -#define ADLP_DMC_PATH DMC_PATH(adlp, 2, 16) +#define ADLP_DMC_PATH DMC_LEGACY_PATH(adlp, 2, 16) MODULE_FIRMWARE(ADLP_DMC_PATH); -#define ADLS_DMC_PATH DMC_PATH(adls, 2, 01) +#define ADLS_DMC_PATH DMC_LEGACY_PATH(adls, 2, 01) MODULE_FIRMWARE(ADLS_DMC_PATH); -#define DG1_DMC_PATH DMC_PATH(dg1, 2, 02) +#define DG1_DMC_PATH DMC_LEGACY_PATH(dg1, 2, 02) MODULE_FIRMWARE(DG1_DMC_PATH); -#define RKL_DMC_PATH DMC_PATH(rkl, 2, 03) +#define RKL_DMC_PATH DMC_LEGACY_PATH(rkl, 2, 03) MODULE_FIRMWARE(RKL_DMC_PATH); -#define TGL_DMC_PATH DMC_PATH(tgl, 2, 12) +#define TGL_DMC_PATH DMC_LEGACY_PATH(tgl, 2, 12) MODULE_FIRMWARE(TGL_DMC_PATH); -#define ICL_DMC_PATH DMC_PATH(icl, 1, 09) +#define ICL_DMC_PATH DMC_LEGACY_PATH(icl, 1, 09) #define ICL_DMC_MAX_FW_SIZE 0x6000 MODULE_FIRMWARE(ICL_DMC_PATH); -#define GLK_DMC_PATH DMC_PATH(glk, 1, 04) +#define GLK_DMC_PATH DMC_LEGACY_PATH(glk, 1, 04) #define GLK_DMC_MAX_FW_SIZE 0x4000 MODULE_FIRMWARE(GLK_DMC_PATH); -#define KBL_DMC_PATH DMC_PATH(kbl, 1, 04) +#define KBL_DMC_PATH DMC_LEGACY_PATH(kbl, 1, 04) #define KBL_DMC_MAX_FW_SIZE BXT_DMC_MAX_FW_SIZE MODULE_FIRMWARE(KBL_DMC_PATH); -#define SKL_DMC_PATH DMC_PATH(skl, 1, 27) +#define SKL_DMC_PATH DMC_LEGACY_PATH(skl, 1, 27) #define SKL_DMC_MAX_FW_SIZE BXT_DMC_MAX_FW_SIZE MODULE_FIRMWARE(SKL_DMC_PATH); -#define BXT_DMC_PATH DMC_PATH(bxt, 1, 07) +#define BXT_DMC_PATH DMC_LEGACY_PATH(bxt, 1, 07) #define BXT_DMC_MAX_FW_SIZE 0x3000 MODULE_FIRMWARE(BXT_DMC_PATH); @@ -821,16 +829,38 @@ static void intel_dmc_runtime_pm_put(struct drm_i915_private *dev_priv) intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref); } +static const char *dmc_fallback_path(struct drm_i915_private *i915) +{ + /* No fallback paths for now. */ + return NULL; +} + static void dmc_load_work_fn(struct work_struct *work) { struct drm_i915_private *dev_priv; struct intel_dmc *dmc; const struct firmware *fw = NULL; + const char *fallback_path; + int err; dev_priv = container_of(work, typeof(*dev_priv), display.dmc.work); dmc = &dev_priv->display.dmc; - request_firmware(&fw, dev_priv->display.dmc.fw_path, dev_priv->drm.dev); + err = request_firmware(&fw, dev_priv->display.dmc.fw_path, dev_priv->drm.dev); + + if (err == -ENOENT && !dev_priv->params.dmc_firmware_path) { + fallback_path = dmc_fallback_path(dev_priv); + if (fallback_path) { + drm_dbg_kms(&dev_priv->drm, + "%s not found, falling back to %s\n", + dmc->fw_path, + fallback_path); + err = request_firmware(&fw, fallback_path, dev_priv->drm.dev); + if (err == 0) + dev_priv->display.dmc.fw_path = fallback_path; + } + } + parse_dmc_fw(dev_priv, fw); if (intel_dmc_has_payload(dev_priv)) {