From patchwork Wed Feb 26 12:51:42 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Usyskin X-Patchwork-Id: 13992359 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 DD26FC021B8 for ; Wed, 26 Feb 2025 13:03:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8513510E908; Wed, 26 Feb 2025 13:03:53 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="M8tUbGmU"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0F55A10E908; Wed, 26 Feb 2025 13:03:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1740575033; x=1772111033; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/Yf6hVM7Xux/NN25ntIHgUkjUYUqTJyV8WCqWA7w1LU=; b=M8tUbGmUmRgGaQySzln7TpFNZ5zM7KuJiIBVFXUiaTFhsPMO54YOewuk DQou6pi3iT4n0N1y4k6DhO5bO3YjgAxwX1IdpQVf+XCq/GLRoDQsm8FuP 4KpEiLNlVbP6jDDC0MvbGWvWkRWDsYsthn6S7cRWtZhZNuIxb11S3Agrb JIIiqiKmK/8aek3LziXg5g2OdGtoauVfXnvbaEaitD2/pBdiDThikGhxY SoQttnOwP5Yxa3pi5PXx3qY0RoTd4YOu7Se7zQ6j7IHG04mySU4JJB4Jp GIZcFEKIklP/A9y6t7GeQjxfUyB1A1zuVBzJyR2englt7YVQYjQmsLZCz A==; X-CSE-ConnectionGUID: S1+x8xz/TEaxUfljo13rrQ== X-CSE-MsgGUID: GiTHg9wzQ4SfrS4aEkk+ag== X-IronPort-AV: E=McAfee;i="6700,10204,11357"; a="41341658" X-IronPort-AV: E=Sophos;i="6.13,317,1732608000"; d="scan'208";a="41341658" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Feb 2025 05:03:52 -0800 X-CSE-ConnectionGUID: Y7FqJLXFRHOGA1N4Fh43fw== X-CSE-MsgGUID: eCaM7MgUS2abxTp/OnfCbA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,317,1732608000"; d="scan'208";a="121691025" Received: from sannilnx-dsk.jer.intel.com ([10.12.231.107]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Feb 2025 05:03:46 -0800 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 , Karthik Poosa Cc: Reuven Abliyev , 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 v5 10/11] drm/xe/nvm: add on-die non-volatile memory device Date: Wed, 26 Feb 2025 14:51:42 +0200 Message-ID: <20250226125143.3791515-11-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250226125143.3791515-1-alexander.usyskin@intel.com> References: <20250226125143.3791515-1-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" Enable access to internal non-volatile memory on DGFX with GSC/CSC devices via a child device. The nvm child device is exposed via auxiliary bus. Reviewed-by: Rodrigo Vivi Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/xe/Makefile | 1 + drivers/gpu/drm/xe/xe_device.c | 5 ++ drivers/gpu/drm/xe/xe_device_types.h | 6 ++ drivers/gpu/drm/xe/xe_nvm.c | 101 +++++++++++++++++++++++++++ drivers/gpu/drm/xe/xe_nvm.h | 15 ++++ drivers/gpu/drm/xe/xe_pci.c | 6 ++ 6 files changed, 134 insertions(+) create mode 100644 drivers/gpu/drm/xe/xe_nvm.c create mode 100644 drivers/gpu/drm/xe/xe_nvm.h diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index ffc836fa8e60..085792d4831a 100644 --- a/drivers/gpu/drm/xe/Makefile +++ b/drivers/gpu/drm/xe/Makefile @@ -79,6 +79,7 @@ xe-y += xe_bb.o \ xe_mmio.o \ xe_mocs.o \ xe_module.o \ + xe_nvm.o \ xe_oa.o \ xe_observation.o \ xe_pat.o \ diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index c9ab79da3f9f..c40fe480b514 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -52,6 +52,7 @@ #include "xe_pmu.h" #include "xe_pxp.h" #include "xe_query.h" +#include "xe_nvm.h" #include "xe_sriov.h" #include "xe_tile.h" #include "xe_ttm_stolen_mgr.h" @@ -854,6 +855,8 @@ int xe_device_probe(struct xe_device *xe) return err; } + xe_nvm_init(xe); + err = xe_heci_gsc_init(xe); if (err) return err; @@ -907,6 +910,8 @@ void xe_device_remove(struct xe_device *xe) { xe_display_unregister(xe); + xe_nvm_fini(xe); + drm_dev_unplug(&xe->drm); } diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index 28d10a1d7b64..a215f72b0ff4 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -35,6 +35,7 @@ #include "intel_display_device.h" #endif +struct intel_dg_nvm_dev; struct xe_ggtt; struct xe_pat_ops; struct xe_pxp; @@ -302,6 +303,8 @@ struct xe_device { u8 has_device_atomics_on_smem:1; /** @info.has_flat_ccs: Whether flat CCS metadata is used */ u8 has_flat_ccs:1; + /** @info.has_gsc_nvm: device has gsc non-volatile memory */ + u8 has_gsc_nvm:1; /** @info.has_heci_cscfi: device has heci cscfi */ u8 has_heci_cscfi:1; /** @info.has_heci_gscfi: device has heci gscfi */ @@ -508,6 +511,9 @@ struct xe_device { /** @heci_gsc: graphics security controller */ struct xe_heci_gsc heci_gsc; + /** @nvm: discrete graphics non-volatile memory */ + struct intel_dg_nvm_dev *nvm; + /** @oa: oa observation subsystem */ struct xe_oa oa; diff --git a/drivers/gpu/drm/xe/xe_nvm.c b/drivers/gpu/drm/xe/xe_nvm.c new file mode 100644 index 000000000000..26de7d4472c8 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_nvm.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright(c) 2019-2025, Intel Corporation. All rights reserved. + */ + +#include +#include + +#include "xe_device_types.h" +#include "xe_nvm.h" +#include "xe_sriov.h" + +#define GEN12_GUNIT_NVM_BASE 0x00102040 +#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", }, + [2] = { .name = "GSC", }, + [11] = { .name = "OptionROM", }, + [12] = { .name = "DAM", }, +}; + +static void xe_nvm_release_dev(struct device *dev) +{ +} + +void xe_nvm_init(struct xe_device *xe) +{ + struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + struct intel_dg_nvm_dev *nvm; + struct auxiliary_device *aux_dev; + int ret; + + if (!xe->info.has_gsc_nvm) + return; + + /* No access to internal NVM from VFs */ + if (IS_SRIOV_VF(xe)) + return; + + /* Nvm pointer should be NULL here */ + if (WARN_ON(xe->nvm)) + return; + + xe->nvm = kzalloc(sizeof(*nvm), GFP_KERNEL); + if (!xe->nvm) + return; + + nvm = xe->nvm; + + nvm->writeable_override = false; + 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; + nvm->bar.flags = IORESOURCE_MEM; + nvm->bar.desc = IORES_DESC_NONE; + nvm->regions = regions; + + aux_dev = &nvm->aux_dev; + + aux_dev->name = "nvm"; + aux_dev->id = (pci_domain_nr(pdev->bus) << 16) | + PCI_DEVID(pdev->bus->number, pdev->devfn); + aux_dev->dev.parent = &pdev->dev; + aux_dev->dev.release = xe_nvm_release_dev; + + ret = auxiliary_device_init(aux_dev); + if (ret) { + drm_err(&xe->drm, "xe-nvm aux init failed %d\n", ret); + return; + } + + ret = auxiliary_device_add(aux_dev); + if (ret) { + drm_err(&xe->drm, "xe-nvm aux add failed %d\n", ret); + auxiliary_device_uninit(aux_dev); + return; + } +} + +void xe_nvm_fini(struct xe_device *xe) +{ + struct intel_dg_nvm_dev *nvm = xe->nvm; + + if (!xe->info.has_gsc_nvm) + return; + + /* No access to internal NVM from VFs */ + if (IS_SRIOV_VF(xe)) + return; + + /* Nvm pointer should not be NULL here */ + if (WARN_ON(!nvm)) + return; + + auxiliary_device_delete(&nvm->aux_dev); + auxiliary_device_uninit(&nvm->aux_dev); + kfree(nvm); + xe->nvm = NULL; +} diff --git a/drivers/gpu/drm/xe/xe_nvm.h b/drivers/gpu/drm/xe/xe_nvm.h new file mode 100644 index 000000000000..5487764c180f --- /dev/null +++ b/drivers/gpu/drm/xe/xe_nvm.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright(c) 2019-2025 Intel Corporation. All rights reserved. + */ + +#ifndef __XE_NVM_H__ +#define __XE_NVM_H__ + +struct xe_device; + +void xe_nvm_init(struct xe_device *xe); + +void xe_nvm_fini(struct xe_device *xe); + +#endif diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index 8b6658b214be..51a729d1ef98 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -62,6 +62,7 @@ struct xe_device_desc { u8 is_dgfx:1; u8 has_display:1; + u8 has_gsc_nvm:1; u8 has_heci_gscfi:1; u8 has_heci_cscfi:1; u8 has_llc:1; @@ -285,6 +286,7 @@ static const struct xe_device_desc dg1_desc = { PLATFORM(DG1), .dma_mask_size = 39, .has_display = true, + .has_gsc_nvm = 1, .has_heci_gscfi = 1, .require_force_probe = true, }; @@ -296,6 +298,7 @@ static const u16 dg2_g12_ids[] = { INTEL_DG2_G12_IDS(NOP), 0 }; #define DG2_FEATURES \ DGFX_FEATURES, \ PLATFORM(DG2), \ + .has_gsc_nvm = 1, \ .has_heci_gscfi = 1, \ .subplatforms = (const struct xe_subplatform_desc[]) { \ { XE_SUBPLATFORM_DG2_G10, "G10", dg2_g10_ids }, \ @@ -330,6 +333,7 @@ static const __maybe_unused struct xe_device_desc pvc_desc = { PLATFORM(PVC), .dma_mask_size = 52, .has_display = false, + .has_gsc_nvm = 1, .has_heci_gscfi = 1, .max_remote_tiles = 1, .require_force_probe = true, @@ -356,6 +360,7 @@ static const struct xe_device_desc bmg_desc = { PLATFORM(BATTLEMAGE), .dma_mask_size = 46, .has_display = true, + .has_gsc_nvm = 1, .has_heci_cscfi = 1, }; @@ -631,6 +636,7 @@ static int xe_info_init_early(struct xe_device *xe, xe->info.dma_mask_size = desc->dma_mask_size; xe->info.is_dgfx = desc->is_dgfx; + xe->info.has_gsc_nvm = desc->has_gsc_nvm; xe->info.has_heci_gscfi = desc->has_heci_gscfi; xe->info.has_heci_cscfi = desc->has_heci_cscfi; xe->info.has_llc = desc->has_llc;