From mboxrd@z Thu Jan 1 00:00:00 1970 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 CA83AC88E5F for ; Fri, 11 Sep 2026 20:12:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 415E010F6F5; Fri, 11 Sep 2026 20:12:17 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="axozO6G2"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6999289E33 for ; Fri, 11 Sep 2026 20:12:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1789157521; x=1820693521; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=sKM43aVfLAv0gyA3UI5/EyolAr1agVZSK+qWtf3bx+g=; b=axozO6G2TT2zw240qF/bLYUJPPIq8BXdO9aICZ1q+/MOYRXCGtugtGWh 96HguvI0u7lTahy4iBygzUQxhkxkWDJprNAlbPy0YnqFUEcS4uNzfaMcB N0R5R7IBDrp4EU+9Ytn9pfzrWR/ZiI/qgbQYFcB6ClgZ0qOile3YeNU4j +HrFhIWIJaTXjycTV/h+Oa9jCko/+nL/6BHHRIGuRjRuK73PHMDKAuzJ4 LO0kdyRNvzkeNzM6N0G95pita5N3x0687cCFa96IEGwWW/hDquPrWFklE Et1+blMDA/475vZaao08VwaeI4Qs5mjMG1VlIy5aOAf4/qMMZkKIcy+qp g==; X-CSE-ConnectionGUID: Q/7J1ogNRhSLAt2UOCLVkw== X-CSE-MsgGUID: pvV0c6IQTLSWP8k2v5Xjag== X-IronPort-AV: E=McAfee;i="6800,10657,11902"; a="115162431" X-IronPort-AV: E=Sophos;i="6.27,97,1787036400"; d="scan'208";a="115162431" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2026 13:11:59 -0700 X-CSE-ConnectionGUID: mtV29LdfRua6cjAQqOQTHg== X-CSE-MsgGUID: Q1ZZZ6jmR6a4hOmql/oQVA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,97,1787036400"; d="scan'208";a="277272115" Received: from mjruhl-vm.amr.corp.intel.com ([10.11.186.166]) by fmviesa005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2026 13:11:59 -0700 From: "Michael J. Ruhl" To: platform-driver-x86@vger.kernel.org, intel-xe@lists.freedesktop.org, hansg@kernel.org, ilpo.jarvinen@linux.intel.com, matthew.brost@intel.com, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com, airlied@gmail.com, simona@ffwll.ch, david.e.box@linux.intel.com, anoop.c.vijay@intel.com, badal.nilawar@intel.com, matthew.d.roper@intel.com, james.ausmus@intel.com, karthik.poosa@intel.com Subject: [PATCH v8 16/20] drm/xe/vsec: Crescent Island PMT callbacks Date: Fri, 11 Sep 2026 13:12:04 -0700 Message-ID: <20260911201148.1610547-38-michael.j.ruhl@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260911201148.1610547-22-michael.j.ruhl@intel.com> References: <20260911201148.1610547-22-michael.j.ruhl@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" CRI PMT support requires callbacks to access the discovery status and control areas. Access is a common MMIO area that requires an index to be set before access is allowed. Introduce the necessary callbacks to get the status and control information for CRI PMT usage. Add the glue logic to register the CRI PMT functionality. Signed-off-by: Michael J. Ruhl --- drivers/gpu/drm/xe/xe_vsec.c | 108 ++++++++++++++++++++++++++++++++++- 1 file changed, 105 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_vsec.c b/drivers/gpu/drm/xe/xe_vsec.c index 9f00ae58b921..cb3d9142346c 100644 --- a/drivers/gpu/drm/xe/xe_vsec.c +++ b/drivers/gpu/drm/xe/xe_vsec.c @@ -362,17 +362,110 @@ int xe_pmt_telem_read(struct device *dev, u32 guid, u64 *data, loff_t user_offse return ret == 0 ? count : ret; } -static struct pmt_callbacks xe_pmt_cb = { +/** + * xe_pmt_read_reg() - read a crashlog register + * @dev: the xe device that registered the callback + * @guid: PMT guid of the crashlog instance + * @reg: data read from the PMT data structure + * @offset: which data to read from the PMT data structure + * + * Read the requested PMT register based on the pcie device and guid. The + * supported struct is the Crashlog Type1 Version2. + * + * Currently this is for CRI only. + */ +static int xe_pmt_read_reg(struct device *dev, u32 guid, u32 *reg, u32 offset) +{ + struct xe_device *xe = kdev_to_xe_device(dev); + void __iomem *disc_addr = xe->mmio.regs + xe->pmt.base_offset; + int ret = 0; + u32 inst; + int idx; + + if (!drm_dev_enter(&xe->drm, &idx)) + return -ENODEV; + + if (FIELD_GET(GUID_DEVICE_ID, guid) != CRI_DEVICE_ID || + FIELD_GET(GUID_CAP_TYPE, guid) != CRASHLOG) { + ret = -EINVAL; + goto dev_exit; + } + + inst = FIELD_GET(GUID_RECORD_ID, guid) == PUNIT ? + CRI_CRASHLOG_PUNIT_DISC_OFFSET : CRI_CRASHLOG_OOBMSM_DISC_OFFSET; + disc_addr += inst + offset; + + xe_pm_runtime_get(xe); + mutex_lock(&xe->pmt.lock); + + xe->soc_remapper.set_telem_region(xe, CRI_IDX_TELEM_DISCOVERY); + + *reg = readl(disc_addr); + + mutex_unlock(&xe->pmt.lock); + xe_pm_runtime_put(xe); + +dev_exit: + drm_dev_exit(idx); + + return ret; +} + +static int xe_pmt_write_reg(struct device *dev, u32 guid, u32 reg, u32 offset) +{ + struct xe_device *xe = kdev_to_xe_device(dev); + void __iomem *disc_addr = xe->mmio.regs + xe->pmt.base_offset; + int ret = 0; + u32 inst; + int idx; + + if (!drm_dev_enter(&xe->drm, &idx)) + return -ENODEV; + + if (FIELD_GET(GUID_DEVICE_ID, guid) != CRI_DEVICE_ID || + FIELD_GET(GUID_CAP_TYPE, guid) != CRASHLOG) { + ret = -EINVAL; + goto dev_exit; + } + + inst = FIELD_GET(GUID_RECORD_ID, guid) == PUNIT ? + CRI_CRASHLOG_PUNIT_DISC_OFFSET : CRI_CRASHLOG_OOBMSM_DISC_OFFSET; + disc_addr += inst + offset; + + xe_pm_runtime_get(xe); + mutex_lock(&xe->pmt.lock); + + xe->soc_remapper.set_telem_region(xe, CRI_IDX_TELEM_DISCOVERY); + + writel(reg, disc_addr); + + mutex_unlock(&xe->pmt.lock); + xe_pm_runtime_put(xe); + +dev_exit: + drm_dev_exit(idx); + + return ret; +} + +static struct pmt_callbacks xe_bmg_pmt_cb = { .read_telem = xe_pmt_telem_read, }; +static struct pmt_callbacks xe_cri_pmt_cb = { + .read_telem = xe_pmt_telem_read, + .read_reg = xe_pmt_read_reg, + .write_reg = xe_pmt_write_reg, +}; + static const int vsec_platforms[] = { [XE_BATTLEMAGE] = XE_VSEC_BMG, + [XE_CRESCENTISLAND] = XE_VSEC_CRI, }; static enum xe_vsec get_platform_info(struct xe_device *xe) { - if (xe->info.platform > XE_BATTLEMAGE) + if (xe->info.platform > XE_CRESCENTISLAND) return XE_VSEC_UNKNOWN; return vsec_platforms[xe->info.platform]; @@ -402,8 +495,17 @@ void xe_vsec_init(struct xe_device *xe) if (IS_SRIOV_VF(xe)) return; xe->pmt.base_offset = BMG_TELEMETRY_OFFSET; - info->priv_data = &xe_pmt_cb; + info->priv_data = &xe_bmg_pmt_cb; break; + + case XE_VSEC_CRI: + if (IS_SRIOV_VF(xe)) + return; + xe->pmt.base_offset = CRI_PMT_OFFSET; + info->priv_data = &xe_cri_pmt_cb; + xe->soc_remapper.set_telem_region(xe, CRI_IDX_TELEM_DISCOVERY); + break; + default: break; } -- 2.43.0