From patchwork Wed Jan 11 00:56:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alan Previn X-Patchwork-Id: 13095816 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 DB302C46467 for ; Wed, 11 Jan 2023 00:57:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A60D410E0F2; Wed, 11 Jan 2023 00:56:55 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6BDEE10E0F2; Wed, 11 Jan 2023 00:56:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673398612; x=1704934612; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=obOZtik4n2a2Q2wiaBfxzSUQ/UTVHfE1h2n/RrkK/5c=; b=CO+2k11qh+/vs//qlK/Z6PbCRdzBppFzRtnAUBUnlJxMf8nwIBRYuyGX eqg9AUGAHF6eCtEOxmSUxmtfepvddehoY9mRR6vHeL1xIkd4SnHYayB3i enou+rJXRmw4H10yh4+t37ch2m2jVmQHpflahBOeuNRKtBIEVjQhVQR0y QGSyzPWKIoTKsy7AmOx75BcNzxrUNGlqnRHSo4j2nGHqhJxNONxiDjicN 1amOuRjE48+23aAEqx1xsrXfSRvhDPy22TMo1UVNS68UysPhnDBIcZH13 pJnVHrtBNw/micsHnXUTQIxvjmWGvA+C5kb1GMxWXVOPHzBywO/7EcD96 g==; X-IronPort-AV: E=McAfee;i="6500,9779,10586"; a="325307084" X-IronPort-AV: E=Sophos;i="5.96,315,1665471600"; d="scan'208";a="325307084" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jan 2023 16:56:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10586"; a="831175649" X-IronPort-AV: E=Sophos;i="5.96,315,1665471600"; d="scan'208";a="831175649" Received: from aalteres-desk.fm.intel.com ([10.80.57.53]) by orsmga005.jf.intel.com with ESMTP; 10 Jan 2023 16:56:51 -0800 From: Alan Previn To: intel-gfx@lists.freedesktop.org Subject: [PATCH 4/9] drm/i915/pxp: Add MTL helpers to submit Heci-Cmd-Packet to GSC Date: Tue, 10 Jan 2023 16:56:34 -0800 Message-Id: <20230111005642.300761-5-alan.previn.teres.alexis@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230111005642.300761-1-alan.previn.teres.alexis@intel.com> References: <20230111005642.300761-1-alan.previn.teres.alexis@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: Juston Li , Daniele Ceraolo Spurio , dri-devel@lists.freedesktop.org, Alan Previn Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add helper functions into (new) common heci-packet-submission files to handle generating the MTL GSC-CS Memory-Header and emitting of the Heci-Cmd-Packet instructions that gets submitted to the engine. NOTE1: This common functions for heci-packet-submission will be used by different i915 callers: 1- GSC-SW-Proxy: This is pending upstream publication awaiting a few remaining opens 2- MTL-HDCP: An equivalent patch has also been published at: https://patchwork.freedesktop.org/series/111876/. (Patch 1) 3- PXP: This series. NOTE2: A difference in this patch vs what is appearing is in bullet 2 above is that HDCP (and SW-Proxy) will be using priveleged submission (GGTT and common gsc-uc-context) while PXP will be using non-priveleged PPGTT, context and batch buffer. Therefore this patch will only slightly overlap with the MTL-HDCP patches despite have very similar function names (emit_foo vs emit_nonpriv_foo). This is because HECI_CMD_PKT instructions require very different flows and hw-specific code when done via PPGTT based submission (not different from other engines). MTL-HDCP contains the same intel_gsc_mtl_header_t structures as this but the helpers there are different. Both add the same new file names. NOTE3: Additional clarity about the heci-cmd-pkt layout and where the common helpers come in: - When an internal subsystem needs to send a command request to the security firmware on MTL onwards, it will send that via the GSC-engine-command-streamer. - However those commands, (lets call them "gsc_specific_fw_api" calls), are not understood by the GSC command streamer hw. - The command streamer DOES understand GSC_HECI_CMD_PKT but requires an additional header before the "gsc_specific_fw_api" is sent by the hw engine to the firmware (with additional metadata). - Thus, the structural layout of the request submitted would need to look like the diagram below (for non-priv PXP). - In the diagram, the common helper for HDCP, (GSC-Sw-Proxy) and PXP (i.e. new function intel_gsc_uc_heci_cmd_emit_mtl_header) will populate blob (C) while additional helpers different for GGTT (not in this series) vs PPGTT (this patch) will populate blobs (A) and (B) below. ___________________________________________________________ (A) | MI_BATCH_BUFFER_START (ppgtt, batchbuff-addr, ...) | | | | | _|________________________________________________ | | (B)| GSC_HECI_CMD_PKT (pkt-addr-in, pkt-size-in, | | | | pkt-addr-out, pkt-size-out) |-------- | | MI_BATCH_BUFFER_END | | | | |________________________________________________| | | | | | |_________________________________________________________| | | --------------------------------------------------------- | \|/ ______V___________________________________________ | _________________________________________ | |(C)| | | | | struct intel_gsc_mtl_header { | | | | validity marker | | | | heci_clent_id | | | | ... | | | | } | | | |_______________________________________| | |(D)| | | | | struct gsc_fw_specific_api_foobar { | | | | ... | | | | For an example, see | | | | 'struct pxp43_create_arb_in' at | | | | intel_pxp_cmd_interface_43.h | | | | | | | | } | | | | Struture depends on command type | | | | struct gsc_fw_specific_api_foobar { | | | |_______________________________________| | |________________________________________________| That said, this patch provides basic helpers but leaves the PXP subsystem (i.e. the caller) to handle everything else from input/output packet size verification to handling the responses from security firmware (such as requiring a retry). Signed-off-by: Alan Previn --- drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 2 + .../i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c | 128 ++++++++++++++++++ .../i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h | 74 ++++++++++ 4 files changed, 205 insertions(+) create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index eae4325310e8..7dc18554da10 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -194,6 +194,7 @@ i915-y += \ i915-y += \ gt/uc/intel_gsc_fw.o \ gt/uc/intel_gsc_uc.o \ + gt/uc/intel_gsc_uc_heci_cmd_submit.o \ gt/uc/intel_guc.o \ gt/uc/intel_guc_ads.o \ gt/uc/intel_guc_capture.o \ diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h index 2af1ae3831df..454179884801 100644 --- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h +++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h @@ -439,6 +439,8 @@ #define GSC_FW_LOAD GSC_INSTR(1, 0, 2) #define HECI1_FW_LIMIT_VALID (1 << 31) +#define GSC_HECI_CMD_PKT GSC_INSTR(0, 0, 6) + /* * Used to convert any address to canonical form. * Starting from gen8, some commands (e.g. STATE_BASE_ADDRESS, diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c new file mode 100644 index 000000000000..2d6c7faf1794 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c @@ -0,0 +1,128 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2022 Intel Corporation + */ + +#include + +#include "i915_drv.h" +#include "i915_vma.h" + +#include "gt/intel_gpu_commands.h" +#include "gt/intel_context.h" +#include "gt/intel_gt.h" +#include "gt/intel_ring.h" + +#include "intel_gsc_fw.h" +#include "intel_gsc_uc.h" +#include "intel_gsc_uc_heci_cmd_submit.h" + +void +intel_gsc_uc_heci_cmd_emit_mtl_header(struct intel_gsc_mtl_header *header, + u8 heci_client_id, u32 msg_size, + u64 host_session_handle, u32 flags) +{ + int hdr_size = sizeof(struct intel_gsc_mtl_header); + + header->validity_marker = MTL_HECI_VALIDITY_MARKER; + header->header_version = MTL_HECI_HEADER_VERSION; + header->message_size = msg_size + hdr_size; + header->heci_client_id = heci_client_id; + header->flags = flags; + + header->host_session_handle = FIELD_GET(MTL_GSC_HDR_CALLER_SESSION_ID_MASK, + host_session_handle); + + switch (heci_client_id) { + default: + fallthrough; + case MTL_HECI_CLIENT_PXP: + header->host_session_handle |= FIELD_PREP(MTL_GSC_HDR_SESSION_HANDLE_USAGE_MASK, + MTL_GSC_HSH_USAGE_PXP); + break; + case MTL_HECI_CLIENT_ME_PROXY: + header->host_session_handle |= FIELD_PREP(MTL_GSC_HDR_SESSION_HANDLE_USAGE_MASK, + MTL_GSC_HSH_USAGE_PROXY); + break; + case MTL_HECI_CLIENT_HDCP: + header->host_session_handle |= FIELD_PREP(MTL_GSC_HDR_SESSION_HANDLE_USAGE_MASK, + MTL_GSC_HSH_USAGE_HDCP); + break; + } +} + +#define GSC_HECI_CMD_PKT_NONPRIV_SIZE 8 + +static void +emit_gsc_heci_pkt_nonpriv(u32 *cs, struct intel_gsc_heci_non_priv_pkt *pkt) +{ + *cs++ = GSC_HECI_CMD_PKT; + *cs++ = lower_32_bits(pkt->addr_in); + *cs++ = upper_32_bits(pkt->addr_in); + *cs++ = pkt->size_in; + *cs++ = lower_32_bits(pkt->addr_out); + *cs++ = upper_32_bits(pkt->addr_out); + *cs++ = pkt->size_out; + *cs++ = 0; + *cs++ = MI_BATCH_BUFFER_END; +} + +int +intel_gsc_uc_heci_cmd_submit_nonpriv(struct intel_gsc_uc *gsc, + struct intel_context *ce, + struct intel_gsc_heci_non_priv_pkt *pkt, + u32 *cs, int timeout_ms) +{ + struct intel_engine_cs *eng; + struct i915_request *rq; + int err; + + rq = intel_context_create_request(ce); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + emit_gsc_heci_pkt_nonpriv(cs, pkt); + + i915_vma_lock(pkt->bb_vma); + err = i915_vma_move_to_active(pkt->bb_vma, rq, EXEC_OBJECT_WRITE); + i915_vma_unlock(pkt->bb_vma); + + if (!err) { + i915_vma_lock(pkt->heci_pkt_vma); + err = i915_vma_move_to_active(pkt->heci_pkt_vma, rq, EXEC_OBJECT_WRITE); + i915_vma_unlock(pkt->heci_pkt_vma); + } + + eng = rq->context->engine; + if (!err && eng->emit_init_breadcrumb) + err = eng->emit_init_breadcrumb(rq); + + if (!err) + err = eng->emit_bb_start(rq, i915_vma_offset(pkt->bb_vma), PAGE_SIZE, 0); + + if (err) { + i915_request_add(rq); + return err; + } + + i915_request_get(rq); + + i915_request_add(rq); + if (i915_request_wait(rq, I915_WAIT_INTERRUPTIBLE, + msecs_to_jiffies(timeout_ms)) < 0) { + i915_request_put(rq); + return -ETIME; + } + + i915_request_put(rq); + + err = ce->engine->emit_flush(rq, 0); + if (err) + drm_err(&gsc_uc_to_gt(gsc)->i915->drm, + "Failed emit-flush for gsc-heci-non-priv-pkterr=%d\n", err); + + if (unlikely(err)) + i915_request_set_error_once(rq, err); + + return err; +} diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h new file mode 100644 index 000000000000..394d9929529a --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2022 Intel Corporation + */ + +#ifndef _INTEL_GSC_UC_HECI_CMD_H_ +#define _INTEL_GSC_UC_HECI_CMD_H_ + +#include + +struct i915_vma; +struct intel_context; +struct intel_gsc_uc; + +struct intel_gsc_mtl_header { + u32 validity_marker; +#define MTL_HECI_VALIDITY_MARKER 0xA578875A + + u8 heci_client_id; +#define MTL_HECI_CLIENT_ME_PROXY 10 +#define MTL_HECI_CLIENT_PXP 17 +#define MTL_HECI_CLIENT_HDCP 18 + + u8 reserved1; + + u16 header_version; +#define MTL_HECI_HEADER_VERSION 1 + + u64 host_session_handle; /* avoid collision across subsystem users, define format: */ +#define MTL_GSC_HDR_SESSION_HANDLE_USAGE_MASK GENMASK(63, 56) /* caller leaves empty */ +#define MTL_GSC_HSH_USAGE_PROXY 0x1 +#define MTL_GSC_HSH_USAGE_HDCP 0x2 +#define MTL_GSC_HSH_USAGE_PXP 0x3 +#define MTL_GSC_HDR_CALLER_SESSION_ID_MASK GENMASK(55, 0) + + u64 gsc_message_handle; + + u32 message_size; /* lower 20 bits only, upper 12 are reserved */ + + /* + * Flags mask: + * Bit 0: Pending + * Bit 1: Session Cleanup; + * Bits 2-15: Flags + * Bits 16-31: Extension Size + */ + u32 flags; +#define MTL_GSC_HDR_FLAG_MSG_PENDING BIT(0) +#define MTL_GSC_HDR_FLAG_MSG_CLEANUP BIT(1) + + u32 status; +} __packed; + +struct intel_gsc_heci_non_priv_pkt { + u64 addr_in; + u32 size_in; + u64 addr_out; + u32 size_out; + struct i915_vma *heci_pkt_vma; + struct i915_vma *bb_vma; +}; + +void +intel_gsc_uc_heci_cmd_emit_mtl_header(struct intel_gsc_mtl_header *header, + u8 heci_client_id, u32 msg_size, + u64 host_session_handle, u32 flags); + +int +intel_gsc_uc_heci_cmd_submit_nonpriv(struct intel_gsc_uc *gsc, + struct intel_context *ce, + struct intel_gsc_heci_non_priv_pkt *pkt, + u32 *cs, int timeout_ms); + +#endif