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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E58EBC433F5 for ; Mon, 14 Mar 2022 02:27:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235895AbiCNC2u (ORCPT ); Sun, 13 Mar 2022 22:28:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234197AbiCNC2s (ORCPT ); Sun, 13 Mar 2022 22:28:48 -0400 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE37413F20 for ; Sun, 13 Mar 2022 19:27:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647224859; x=1678760859; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=NussbBQYJP77wlSFGzFIwethuHTmAHpwXhSFQL4/93Q=; b=AcJbkUGjTCbRgJKE07ldzHQ+BlociqF4vd7B86yvXssTyyV64/zTmpEJ rUonyNzzY3n5FCHswjWyGs5zTnH8IWgWZs4h9zIm+SYF5GtQYefU2/qDU OILiBENKDNk5735Am1WuKqjppkxSlJuab1Mf55zW/Y7dk9Rc/JLsiF1Ey aWhmdRYHokNP5MR8Cgy3QbG82qKqkwmi/AgLqSg0nYz5HzmzPhbRrzFRq s7DCL+y4NdKVkGq3FCKEIdtMQ/6qicXrjp3UmPtp8k3S1NVQMBQFeDfV3 xwZ+Xz5seT8hq8w30oTUAYmZduC1PXVH2pBjYh6jqjWwmabIbcvzmhfSy g==; X-IronPort-AV: E=McAfee;i="6200,9189,10285"; a="256107066" X-IronPort-AV: E=Sophos;i="5.90,179,1643702400"; d="scan'208";a="256107066" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2022 19:27:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,179,1643702400"; d="scan'208";a="713543851" Received: from unknown (HELO localhost.localdomain) ([10.226.216.87]) by orsmga005.jf.intel.com with ESMTP; 13 Mar 2022 19:27:37 -0700 From: tien.sung.ang@intel.com To: Dinh Nguyen Cc: linux-kernel@vger.kernel.org, Ang Tien Sung Subject: [PATCH 2/3] firmware: stratix10-svc: add new polling command for FCS Date: Mon, 14 Mar 2022 18:27:31 +0800 Message-Id: <20220314102731.1746780-1-tien.sung.ang@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ang Tien Sung Introduce a new SMC command INTEL_SIP_SMC_FUNCID_SERVICE_COMPLETED that polls if a previous asynchronous command was completed. This SMC command is used by the new FPGA Crypto Service (FCS). A basic example is that the FCS sends an AES data encryption call to the secure device manager(SDM) and waits for the completion of the operation by continuously polling the results with the new command. Signed-off-by: Ang Tien Sung --- drivers/firmware/stratix10-svc.c | 38 ++++++++++++++++--- include/linux/firmware/intel/stratix10-smc.h | 25 +++++++++++- .../firmware/intel/stratix10-svc-client.h | 5 +++ 3 files changed, 61 insertions(+), 7 deletions(-) diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c index 23079896044d..59dfc997684c 100644 --- a/drivers/firmware/stratix10-svc.c +++ b/drivers/firmware/stratix10-svc.c @@ -248,6 +248,7 @@ static void svc_thread_cmd_config_status(struct stratix10_svc_controller *ctrl, { struct arm_smccc_res res; int count_in_sec; + unsigned long a0, a1, a2; cb_data->kaddr1 = NULL; cb_data->kaddr2 = NULL; @@ -256,24 +257,42 @@ static void svc_thread_cmd_config_status(struct stratix10_svc_controller *ctrl, pr_debug("%s: polling config status\n", __func__); + a0 = INTEL_SIP_SMC_FPGA_CONFIG_ISDONE; + a1 = (unsigned long)p_data->paddr; + a2 = 0; + + if (p_data->command == COMMAND_POLL_SERVICE_STATUS) + a0 = INTEL_SIP_SMC_SERVICE_COMPLETED; + count_in_sec = FPGA_CONFIG_STATUS_TIMEOUT_SEC; while (count_in_sec) { - ctrl->invoke_fn(INTEL_SIP_SMC_FPGA_CONFIG_ISDONE, - 0, 0, 0, 0, 0, 0, 0, &res); + ctrl->invoke_fn(a0, a1, a2, 0, 0, 0, 0, 0, &res); if ((res.a0 == INTEL_SIP_SMC_STATUS_OK) || - (res.a0 == INTEL_SIP_SMC_STATUS_ERROR)) + (res.a0 == INTEL_SIP_SMC_STATUS_ERROR) || + (res.a0 == INTEL_SIP_SMC_STATUS_REJECTED)) break; /* - * configuration is still in progress, wait one second then + * request is still in progress, wait one second then * poll again */ msleep(1000); count_in_sec--; } - if (res.a0 == INTEL_SIP_SMC_STATUS_OK && count_in_sec) + if (!count_in_sec) { + pr_err("%s: poll status timeout\n", __func__); + cb_data->status = BIT(SVC_STATUS_BUSY); + } else if (res.a0 == INTEL_SIP_SMC_STATUS_OK) { cb_data->status = BIT(SVC_STATUS_COMPLETED); + cb_data->kaddr1 = (res.a1) ? + svc_pa_to_va(res.a1) : NULL; + cb_data->kaddr2 = &res.a2; + } else { + pr_err("%s: poll status error\n", __func__); + cb_data->kaddr1 = &res.a1; + cb_data->status = BIT(SVC_STATUS_ERROR); + } p_data->chan->scl->receive_cb(p_data->chan->scl, cb_data); } @@ -298,6 +317,7 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data, case COMMAND_RECONFIG: case COMMAND_RSU_UPDATE: case COMMAND_RSU_NOTIFY: + case COMMAND_POLL_SERVICE_STATUS: cb_data->status = BIT(SVC_STATUS_OK); break; case COMMAND_RECONFIG_DATA_SUBMIT: @@ -424,6 +444,13 @@ static int svc_normal_to_secure_thread(void *data) a1 = 0; a2 = 0; break; + /* for polling */ + case COMMAND_POLL_SERVICE_STATUS: + a0 = INTEL_SIP_SMC_SERVICE_COMPLETED; + a1 = (unsigned long)pdata->paddr; + a2 = 0; + break; + default: pr_warn("it shouldn't happen\n"); break; @@ -464,6 +491,7 @@ static int svc_normal_to_secure_thread(void *data) pdata, cbdata); break; case COMMAND_RECONFIG_STATUS: + case COMMAND_POLL_SERVICE_STATUS: svc_thread_cmd_config_status(ctrl, pdata, cbdata); break; diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h index c3e5ab014caf..579efb14cfb4 100644 --- a/include/linux/firmware/intel/stratix10-smc.h +++ b/include/linux/firmware/intel/stratix10-smc.h @@ -321,8 +321,6 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) #define INTEL_SIP_SMC_ECC_DBE \ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_ECC_DBE) -#endif - /** * Request INTEL_SIP_SMC_RSU_NOTIFY * @@ -404,3 +402,26 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) #define INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY 18 #define INTEL_SIP_SMC_RSU_MAX_RETRY \ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY) + +/** + * Request INTEL_SIP_SMC_SERVICE_COMPLETED + * Sync call to check if the secure world have completed service request + * or not. + * + * Call register usage: + * a0: INTEL_SIP_SMC_SERVICE_COMPLETED + * a1: the physical address for secure firmware to put output data + * a2: size + * a3-a7: not used + * + * Return status: + * a0: INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_STATUS_ERROR, + * INTEL_SIP_SMC_REJECTED or INTEL_SIP_SMC_STATUS_BUSY + * a1: physical address for the output daat + * a2: output data size + */ +#define INTEL_SIP_SMC_FUNCID_SERVICE_COMPLETED 30 +#define INTEL_SIP_SMC_SERVICE_COMPLETED \ + INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_SERVICE_COMPLETED) + +#endif diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h index 468490590f85..82e8c9336cf4 100644 --- a/include/linux/firmware/intel/stratix10-svc-client.h +++ b/include/linux/firmware/intel/stratix10-svc-client.h @@ -104,6 +104,9 @@ struct stratix10_svc_chan; * * @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status * is SVC_STATUS_OK or SVC_STATUS_ERROR + * + * @COMMAND_POLL_SERVICE_STATUS: poll if the service request is complete, + * return statis is SVC_STATUS_OK, SVC_STATUS_ERROR or SVC_STATUS_BUSY */ enum stratix10_svc_command_code { COMMAND_NOOP = 0, @@ -117,6 +120,8 @@ enum stratix10_svc_command_code { COMMAND_RSU_RETRY, COMMAND_RSU_MAX_RETRY, COMMAND_RSU_DCMF_VERSION, + /* for general status poll */ + COMMAND_POLL_SERVICE_STATUS = 40, }; /** -- 2.25.1