From patchwork Tue Feb 22 10:36:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jordan Justen X-Patchwork-Id: 12754849 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 D10B9C433EF for ; Tue, 22 Feb 2022 10:36:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D115810E5E2; Tue, 22 Feb 2022 10:36:54 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id BBFDE10E57F; Tue, 22 Feb 2022 10:36:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645526209; x=1677062209; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8y7LPUHpfcevHNfWXXroMWHB2fgdv3ytOJnmzaT6nO0=; b=DfrbQsYPhvxZahDD1hB6KJR3TP4VWwaxZYSWR6WK86iTkcZCZa61ulWc 8RQsTlm6oTZ+KSV4+SYq0/7TcS1g+fT9k7luxgx1Ygx5PDxdiIdR3tRQY 24gjH8x5wpbxfkaKVN/td8b2OZaZONzl+oGDI56o227m21W+Cb6Z4BeI+ 924wKSubJtTivNPvHb7hZvh73FYedWxOPmdE6H/zfKB6hPLEk2cJip8J3 RVQ9tRyD4Z1dw3XQjnmeB4ezEZ1Wf2GR132n9cvLSpY5Vpcr455ohEAiF 76FTyrP0eMhOemBbVVz3Q75MkYNzh1ek2ZBTxifu2VgZgy8MjwzGgk9te w==; X-IronPort-AV: E=McAfee;i="6200,9189,10265"; a="314921374" X-IronPort-AV: E=Sophos;i="5.88,387,1635231600"; d="scan'208";a="314921374" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Feb 2022 02:36:48 -0800 X-IronPort-AV: E=Sophos;i="5.88,387,1635231600"; d="scan'208";a="606647328" Received: from eelele-mobl1.amr.corp.intel.com (HELO localhost) ([10.212.245.101]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Feb 2022 02:36:48 -0800 From: Jordan Justen To: intel-gfx Subject: [PATCH v5 1/4] drm/i915/guc: Add fetch of hwconfig table Date: Tue, 22 Feb 2022 02:36:37 -0800 Message-Id: <20220222103640.1006006-2-jordan.l.justen@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220222103640.1006006-1-jordan.l.justen@intel.com> References: <20220222103640.1006006-1-jordan.l.justen@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Matthew Brost , Jordan Justen , dri-devel , Jon Bloomfield , Rodrigo Vivi , John Harrison , Michal Wajdeczko Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: John Harrison Implement support for fetching the hardware description table from the GuC. The call is made twice - once without a destination buffer to query the size and then a second time to fill in the buffer. Note that the table is only available on ADL-P and later platforms. v5 (of Jordan's posting): * Various changes made by Jordan and recommended by Michal - Makefile ordering - Adjust "struct intel_guc_hwconfig hwconfig" comment - Set Copyright year to 2022 in intel_guc_hwconfig.c/.h - Drop inline from hwconfig_to_guc() - Replace hwconfig param with guc in __guc_action_get_hwconfig() - Move zero size check into guc_hwconfig_discover_size() - Change comment to say zero size offset/size is needed to get size - Add has_guc_hwconfig to devinfo and drop has_table() - Change drm_err to notice in __uc_init_hw() and use %pe Cc: Michal Wajdeczko Signed-off-by: Rodrigo Vivi Signed-off-by: John Harrison Reviewed-by: Matthew Brost Acked-by: Jon Bloomfield Signed-off-by: Jordan Justen Reviewed-by: Michal Wajdeczko --- drivers/gpu/drm/i915/Makefile | 1 + .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h | 1 + .../gpu/drm/i915/gt/uc/abi/guc_errors_abi.h | 4 + drivers/gpu/drm/i915/gt/uc/intel_guc.h | 3 + .../gpu/drm/i915/gt/uc/intel_guc_hwconfig.c | 145 ++++++++++++++++++ .../gpu/drm/i915/gt/uc/intel_guc_hwconfig.h | 19 +++ drivers/gpu/drm/i915/gt/uc/intel_uc.c | 7 + drivers/gpu/drm/i915/i915_pci.c | 1 + drivers/gpu/drm/i915/intel_device_info.h | 1 + 9 files changed, 182 insertions(+) create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index e9ce09620eb5..661f1afb51d7 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -188,6 +188,7 @@ i915-y += gt/uc/intel_uc.o \ gt/uc/intel_guc_ct.o \ gt/uc/intel_guc_debugfs.o \ gt/uc/intel_guc_fw.o \ + gt/uc/intel_guc_hwconfig.o \ gt/uc/intel_guc_log.o \ gt/uc/intel_guc_log_debugfs.o \ gt/uc/intel_guc_rc.o \ diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h index fe5d7d261797..4a61c819f32b 100644 --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h @@ -137,6 +137,7 @@ enum intel_guc_action { INTEL_GUC_ACTION_ENGINE_FAILURE_NOTIFICATION = 0x1009, INTEL_GUC_ACTION_SETUP_PC_GUCRC = 0x3004, INTEL_GUC_ACTION_AUTHENTICATE_HUC = 0x4000, + INTEL_GUC_ACTION_GET_HWCONFIG = 0x4100, INTEL_GUC_ACTION_REGISTER_CONTEXT = 0x4502, INTEL_GUC_ACTION_DEREGISTER_CONTEXT = 0x4503, INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER = 0x4505, diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h index 488b6061ee89..f9e2a6aaef4a 100644 --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h @@ -8,6 +8,10 @@ enum intel_guc_response_status { INTEL_GUC_RESPONSE_STATUS_SUCCESS = 0x0, + INTEL_GUC_RESPONSE_NOT_SUPPORTED = 0x20, + INTEL_GUC_RESPONSE_NO_ATTRIBUTE_TABLE = 0x201, + INTEL_GUC_RESPONSE_NO_DECRYPTION_KEY = 0x202, + INTEL_GUC_RESPONSE_DECRYPTION_FAILED = 0x204, INTEL_GUC_RESPONSE_STATUS_GENERIC_FAIL = 0xF000, }; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h index f9240d4baa69..2058eb8c3d0c 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h @@ -13,6 +13,7 @@ #include "intel_guc_fw.h" #include "intel_guc_fwif.h" #include "intel_guc_ct.h" +#include "intel_guc_hwconfig.h" #include "intel_guc_log.h" #include "intel_guc_reg.h" #include "intel_guc_slpc_types.h" @@ -37,6 +38,8 @@ struct intel_guc { struct intel_guc_ct ct; /** @slpc: sub-structure containing SLPC related data and objects */ struct intel_guc_slpc slpc; + /** @hwconfig: data related to hardware configuration KLV blob */ + struct intel_guc_hwconfig hwconfig; /** @sched_engine: Global engine used to submit requests to GuC */ struct i915_sched_engine *sched_engine; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c new file mode 100644 index 000000000000..ad289603460c --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2022 Intel Corporation + */ + +#include "gt/intel_gt.h" +#include "i915_drv.h" +#include "i915_memcpy.h" +#include "intel_guc_hwconfig.h" + +static struct intel_guc *hwconfig_to_guc(struct intel_guc_hwconfig *hwconfig) +{ + return container_of(hwconfig, struct intel_guc, hwconfig); +} + +/* + * GuC has a blob containing hardware configuration information (HWConfig). + * This is formatted as a simple and flexible KLV (Key/Length/Value) table. + * + * For example, a minimal version could be: + * enum device_attr { + * ATTR_SOME_VALUE = 0, + * ATTR_SOME_MASK = 1, + * }; + * + * static const u32 hwconfig[] = { + * ATTR_SOME_VALUE, + * 1, // Value Length in DWords + * 8, // Value + * + * ATTR_SOME_MASK, + * 3, + * 0x00FFFFFFFF, 0xFFFFFFFF, 0xFF000000, + * }; + * + * The attribute ids are defined in a hardware spec. + */ + +static int __guc_action_get_hwconfig(struct intel_guc *guc, + u32 ggtt_offset, u32 ggtt_size) +{ + u32 action[] = { + INTEL_GUC_ACTION_GET_HWCONFIG, + ggtt_offset, + 0, /* upper 32 bits of address */ + ggtt_size, + }; + int ret; + + ret = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); + if (ret == -ENXIO) + return -ENOENT; + + return ret; +} + +static int guc_hwconfig_discover_size(struct intel_guc_hwconfig *hwconfig) +{ + struct intel_guc *guc = hwconfig_to_guc(hwconfig); + int ret; + + /* Sending a query with zero offset and size will return the + * size of the blob. + */ + ret = __guc_action_get_hwconfig(guc, 0, 0); + if (ret < 0) + return ret; + + if (ret == 0) + return -EINVAL; + + hwconfig->size = ret; + return 0; +} + +static int guc_hwconfig_fill_buffer(struct intel_guc_hwconfig *hwconfig) +{ + struct intel_guc *guc = hwconfig_to_guc(hwconfig); + struct i915_vma *vma; + u32 ggtt_offset; + void *vaddr; + int ret; + + GEM_BUG_ON(!hwconfig->size); + + ret = intel_guc_allocate_and_map_vma(guc, hwconfig->size, &vma, &vaddr); + if (ret) + return ret; + + ggtt_offset = intel_guc_ggtt_offset(guc, vma); + + ret = __guc_action_get_hwconfig(guc, ggtt_offset, hwconfig->size); + if (ret >= 0) + memcpy(hwconfig->ptr, vaddr, hwconfig->size); + + i915_vma_unpin_and_release(&vma, I915_VMA_RELEASE_MAP); + + return ret; +} + +/** + * intel_guc_hwconfig_fini - Finalize the HWConfig + * + * Free up the memory allocation holding the table. + */ +void intel_guc_hwconfig_fini(struct intel_guc_hwconfig *hwconfig) +{ + kfree(hwconfig->ptr); + hwconfig->size = 0; + hwconfig->ptr = NULL; +} + +/** + * intel_guc_hwconfig_init - Initialize the HWConfig + * + * Retrieve the HWConfig table from the GuC and save it away in a local memory + * allocation. It can then be queried on demand by other users later on. + */ +int intel_guc_hwconfig_init(struct intel_guc_hwconfig *hwconfig) +{ + struct intel_guc *guc = hwconfig_to_guc(hwconfig); + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + int ret; + + if (!INTEL_INFO(i915)->has_guc_hwconfig) + return 0; + + ret = guc_hwconfig_discover_size(hwconfig); + if (ret) + return ret; + + hwconfig->ptr = kmalloc(hwconfig->size, GFP_KERNEL); + if (!hwconfig->ptr) { + hwconfig->size = 0; + return -ENOMEM; + } + + ret = guc_hwconfig_fill_buffer(hwconfig); + if (ret < 0) { + intel_guc_hwconfig_fini(hwconfig); + return ret; + } + + return 0; +} diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h new file mode 100644 index 000000000000..bfb90ae168dc --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2022 Intel Corporation + */ + +#ifndef _INTEL_GUC_HWCONFIG_H_ +#define _INTEL_GUC_HWCONFIG_H_ + +#include + +struct intel_guc_hwconfig { + u32 size; + void *ptr; +}; + +int intel_guc_hwconfig_init(struct intel_guc_hwconfig *hwconfig); +void intel_guc_hwconfig_fini(struct intel_guc_hwconfig *hwconfig); + +#endif /* _INTEL_GUC_HWCONFIG_H_ */ diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c index 09ed29df67bc..0cefa2a95190 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c @@ -489,6 +489,11 @@ static int __uc_init_hw(struct intel_uc *uc) if (ret) goto err_log_capture; + ret = intel_guc_hwconfig_init(&guc->hwconfig); + if (ret) + drm_notice(&i915->drm, "Failed to retrieve hwconfig table: %pe\n", + ERR_PTR(ret)); + ret = guc_enable_communication(guc); if (ret) goto err_log_capture; @@ -562,6 +567,8 @@ static void __uc_fini_hw(struct intel_uc *uc) if (intel_uc_uses_guc_submission(uc)) intel_guc_submission_disable(guc); + intel_guc_hwconfig_fini(&guc->hwconfig); + __uc_sanitize(uc); } diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 76e590fcb903..1d31e35a5154 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -990,6 +990,7 @@ static const struct intel_device_info adl_p_info = { BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0) | BIT(VCS2), .ppgtt_size = 48, .dma_mask_size = 39, + .has_guc_hwconfig = 1, }; #undef GEN diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h index 3699b1c539ea..82d8d6bc30ff 100644 --- a/drivers/gpu/drm/i915/intel_device_info.h +++ b/drivers/gpu/drm/i915/intel_device_info.h @@ -133,6 +133,7 @@ enum intel_ppgtt_type { func(gpu_reset_clobbers_display); \ func(has_reset_engine); \ func(has_global_mocs); \ + func(has_guc_hwconfig); \ func(has_gt_uc); \ func(has_l3_dpf); \ func(has_llc); \