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 5DD80C433EF for ; Mon, 11 Jul 2022 22:32:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229602AbiGKWcA (ORCPT ); Mon, 11 Jul 2022 18:32:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230073AbiGKWby (ORCPT ); Mon, 11 Jul 2022 18:31:54 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DC5952E72 for ; Mon, 11 Jul 2022 15:31:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E9D7AB815F3 for ; Mon, 11 Jul 2022 22:31:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2AD4BC341C8; Mon, 11 Jul 2022 22:31:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1657578710; bh=cLXTxU2gelvkFF4Gn5e4UC2mcdZnC0WgJshS0cSrKsE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l1qgkruvSFck6qHRfln1S79eLbzhhAebqNKHHqDmbR32MddPCGMcjhEycZ18dxneF LzG6ik8TVTSKSczxJHVrc2B0RQmYy2fLahRt0WslDKWbCORvoDS6rFDrURNtOb+dV+ Wqu3kOcdp6fuDI16v0yzyDkH5l0lvhJ3dpKZyHUudwnulw6X/T8D74tpkoWMs0iGhB SGG6Aq9m745D7wDYDdZYARGmg80sPc7SeDknoGCzFGo/p0FK3IoCSQqYK+0olD4wf0 8lNXwRnIqmLWz/7ohbq1FTIl6p9PUMCssCRNJ8CLmiNV+/OuZ5ghpOz4bonfMsv8tc AqUpr3JAezYcA== From: Dinh Nguyen To: gregkh@linuxfoundation.org Cc: dinguyen@kernel.org, linux-kernel@vger.kernel.org, Ang Tien Sung Subject: [PATCH 2/6] firmware: stratix10-svc: add FCS polling command Date: Mon, 11 Jul 2022 17:31:36 -0500 Message-Id: <20220711223140.2307945-2-dinguyen@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220711223140.2307945-1-dinguyen@kernel.org> References: <20220711223140.2307945-1-dinguyen@kernel.org> 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 Signed-off-by: Dinh Nguyen --- drivers/firmware/stratix10-svc.c | 42 ++++++++++++++++--- include/linux/firmware/intel/stratix10-smc.h | 25 +++++++++++ .../firmware/intel/stratix10-svc-client.h | 5 +++ 3 files changed, 67 insertions(+), 5 deletions(-) diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c index 1fe748c047df..439a4bdf8207 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 +257,45 @@ 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 = (unsigned long)p_data->size; + + 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->kaddr2 = (res.a2) ? + svc_pa_to_va(res.a2) : NULL; + cb_data->kaddr3 = (res.a3) ? &res.a3 : NULL; + } else { + pr_err("%s: poll status error\n", __func__); + cb_data->kaddr1 = &res.a1; + cb_data->kaddr2 = (res.a2) ? + svc_pa_to_va(res.a2) : NULL; + cb_data->kaddr3 = (res.a3) ? &res.a3 : NULL; + cb_data->status = BIT(SVC_STATUS_ERROR); + } p_data->chan->scl->receive_cb(p_data->chan->scl, cb_data); } @@ -298,6 +320,7 @@ 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: @@ -430,6 +453,14 @@ 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 = (unsigned long)pdata->size; + + break; + default: pr_warn("it shouldn't happen\n"); break; @@ -470,6 +501,7 @@ 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 aad497a9ad8b..0de104009566 100644 --- a/include/linux/firmware/intel/stratix10-smc.h +++ b/include/linux/firmware/intel/stratix10-smc.h @@ -403,6 +403,31 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) #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: this register is optional. If used, it is the physical address for + * secure firmware to put output data + * a2: this register is optional. If used, it is the size of output data + * 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: mailbox error if a0 is INTEL_SIP_SMC_STATUS_ERROR + * a2: physical address containing the process info + * for FCS certificate -- the data contains the certificate status + * for FCS cryption -- the data contains the actual data size FW processes + * a3: 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) + /** * Request INTEL_SIP_SMC_FIRMWARE_VERSION * diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h index 24121f8e0d7c..5d0e814e0c41 100644 --- a/include/linux/firmware/intel/stratix10-svc-client.h +++ b/include/linux/firmware/intel/stratix10-svc-client.h @@ -106,6 +106,9 @@ 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 + * * @COMMAND_FIRMWARE_VERSION: query running firmware version, return status * is SVC_STATUS_OK or SVC_STATUS_ERROR */ @@ -122,6 +125,8 @@ enum stratix10_svc_command_code { COMMAND_RSU_MAX_RETRY, COMMAND_RSU_DCMF_VERSION, COMMAND_FIRMWARE_VERSION, + /* for general status poll */ + COMMAND_POLL_SERVICE_STATUS = 40, }; /** -- 2.25.1