From patchwork Tue Oct 22 10:41:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Usyskin X-Patchwork-Id: 13845566 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 7EE85D3C939 for ; Tue, 22 Oct 2024 10:54:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 65C2610E664; Tue, 22 Oct 2024 10:54:08 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="G/xtN9qt"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5DB9910E658; Tue, 22 Oct 2024 10:53:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1729594437; x=1761130437; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Kz66ZBvdDfnbLzNXF5AzvRxd5T6+xWlmdNEg3YMnw0g=; b=G/xtN9qta4CW5LKDsETok0hCTreN48kp3Zn8Hdnu0oByclYvMDmpGBZY ifI8+Wqs7CJtlsyXA6toDGvj25685acYDXF4oFamBly6M7AIcVNgSgyOB izg4aHF1rWnq6SMuHGMffllgNmtLOP1GRdEE+jRnkhtma6foYrevV1s/J WhuTMDckF0A5RY2NAQkQUigSXZvJeWK2bPfrjmqMpf1cLS0nmgWcTh0AK 6eJClIhMCx4F9jQscJsIvGkqkc0aED87YfQfVCmfOkyg9IAHFEspsFWZl H/PE9A/ioQ4JFvm4tOrgbSmmmNYqid78NXImLkZ0PzD4Fd+Dg3jtFVU/d Q==; X-CSE-ConnectionGUID: d+Bqw/RqTDK44NAPPOF2ag== X-CSE-MsgGUID: 8xCV21miS9mpLeU8Y0symA== X-IronPort-AV: E=McAfee;i="6700,10204,11232"; a="39705102" X-IronPort-AV: E=Sophos;i="6.11,223,1725346800"; d="scan'208";a="39705102" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Oct 2024 03:53:51 -0700 X-CSE-ConnectionGUID: FaLlAvxpTDqRghBFYvas2w== X-CSE-MsgGUID: +jwW4OFnSHSIwBLP+OAVog== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,223,1725346800"; d="scan'208";a="79847687" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Oct 2024 03:53:46 -0700 From: Alexander Usyskin To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Lucas De Marchi , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Rodrigo Vivi , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Joonas Lahtinen , Tvrtko Ursulin Cc: Oren Weil , linux-mtd@lists.infradead.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Alexander Usyskin Subject: [PATCH 08/10] drm/i915/nvm: add support for access mode Date: Tue, 22 Oct 2024 13:41:17 +0300 Message-ID: <20241022104119.3149051-9-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241022104119.3149051-1-alexander.usyskin@intel.com> References: <20241022104119.3149051-1-alexander.usyskin@intel.com> MIME-Version: 1.0 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Check NVM access mode from GSC FW status registers and overwrite access status read from SPI descriptor, if needed. Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/intel_nvm.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_nvm.c b/drivers/gpu/drm/i915/intel_nvm.c index 003c89cbcb88..98c11e027b76 100644 --- a/drivers/gpu/drm/i915/intel_nvm.c +++ b/drivers/gpu/drm/i915/intel_nvm.c @@ -10,6 +10,7 @@ #include "intel_nvm.h" #define GEN12_GUNIT_NVM_SIZE 0x80 +#define HECI_FW_STATUS_2_NVM_ACCESS_MODE BIT(3) static const struct intel_dg_nvm_region regions[INTEL_DG_NVM_REGIONS] = { [0] = { .name = "DESCRIPTOR", }, @@ -22,6 +23,29 @@ static void i915_nvm_release_dev(struct device *dev) { } +static bool i915_nvm_writeable_override(struct drm_i915_private *i915) +{ + struct pci_dev *pdev = to_pci_dev(i915->drm.dev); + resource_size_t base; + bool writeable_override; + + if (IS_DG1(i915)) { + base = DG1_GSC_HECI2_BASE; + } else if (IS_DG2(i915)) { + base = DG2_GSC_HECI2_BASE; + } else { + dev_err(&pdev->dev, "Unknown platform\n"); + return true; + } + + writeable_override = + !(intel_uncore_read(&i915->uncore, HECI_FWSTS(base, 2)) & + HECI_FW_STATUS_2_NVM_ACCESS_MODE); + if (writeable_override) + dev_info(&pdev->dev, "NVM access overridden by jumper\n"); + return writeable_override; +} + void intel_nvm_init(struct drm_i915_private *i915) { struct pci_dev *pdev = to_pci_dev(i915->drm.dev); @@ -43,7 +67,7 @@ void intel_nvm_init(struct drm_i915_private *i915) nvm = i915->nvm; - nvm->writeable_override = true; + nvm->writeable_override = i915_nvm_writeable_override(i915); nvm->bar.parent = &pdev->resource[0]; nvm->bar.start = GEN12_GUNIT_NVM_BASE + pdev->resource[0].start; nvm->bar.end = nvm->bar.start + GEN12_GUNIT_NVM_SIZE - 1;