Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp4054974pxb; Tue, 26 Jan 2021 11:09:00 -0800 (PST) X-Google-Smtp-Source: ABdhPJyIfc8uNwkyAaIn2sGj0ZSRkxWWy9Snphr4xnaZtZGQGmMWbmjEFefyE7mpVwC/17+d+9Yy X-Received: by 2002:aa7:c2c7:: with SMTP id m7mr5685031edp.134.1611688140098; Tue, 26 Jan 2021 11:09:00 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611688140; cv=none; d=google.com; s=arc-20160816; b=bJBdD3betd9Bw1nDUnYeiFhIPYEzejeYbcTel2i4PYJLKGNyp35CI1q3Z87giKoS8J Yw6TzZxm8+9cXoxnIgnIbpJP5hTQ1wxfoLpuBXy4W55oW3g7aEKzhrVN77jhIT3YWGvj 2jo/jmWgaAQhb9avb6gnZ11ulwRFVuTMpYSbtr4ABnRt8uJ6cz6D6khghQ7yg09offba NQuljQHWySsWwFfzXbxxpKwVQNfwuzLf1APo+9H11Icv9G5wYs+Q3q0YlDbgSJ+24Xwx M4xieu0griJWqosJXHmznZYgTnvAiKXXgsMxCRKFEXpU+Q2W4iRdUC03fM0pjuOtPYBg HmSA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:ironport-sdr:ironport-sdr; bh=faw8OvEaCtmWRQW9A43LrxJvAztwZnAhaiUMY0C2NQA=; b=uM+CrmCCw0da94YnGvSkCqfOPHwoDyqu0fbtK6KuLoo5jwxsz3nvztI0q1KxR/hG4a 1/Lqc4bz0sYHYHEQ1s9qtbiVI23A7ADmiBhhUnOKXsZc7mCPZPTS9v+oLLsaLP7Zhxo+ CxfeG//omMrUfPruSR+DYRvMr5Swh5E/3SNT03FLgIcaU7R3hr6JUnHvvL92HXewXEi5 QLxOaH6apXW5w9ymcc/NMW2YVgV0bhbdudDE7/DYkfdzem3wSRHVvEXHsx3iNFKKCLUP 8L48hvGpRKgeABv4yvKtEeSru4lMUI3nHE9+7Reb3K+WvmMh2lotwTGQINh6zMC+UzsT wjmw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id eb8si8248444edb.6.2021.01.26.11.08.31; Tue, 26 Jan 2021 11:09:00 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392724AbhAZOQy (ORCPT + 99 others); Tue, 26 Jan 2021 09:16:54 -0500 Received: from mga02.intel.com ([134.134.136.20]:7404 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392688AbhAZNls (ORCPT ); Tue, 26 Jan 2021 08:41:48 -0500 IronPort-SDR: MRL9Ttc//G+ifgUdQ1tG00y8KUVwWg8qUfg5yDAR68uvNVwGQ/Z045elmPD6ONs3nQSo9oV6oU 5nVzvLac/w3Q== X-IronPort-AV: E=McAfee;i="6000,8403,9875"; a="167000411" X-IronPort-AV: E=Sophos;i="5.79,375,1602572400"; d="scan'208";a="167000411" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2021 05:40:00 -0800 IronPort-SDR: QEPpNYvB7Nf0nr7yJw2c1Rbo8Iri/iNym0Adk43Mz5xovxm3lpIoUsF0AHBS+k1So0yyu2eveq tBEmgUqBPepg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,375,1602572400"; d="scan'208";a="356725885" Received: from marshy.an.intel.com (HELO [10.122.105.143]) ([10.122.105.143]) by orsmga006.jf.intel.com with ESMTP; 26 Jan 2021 05:40:00 -0800 Subject: Re: [PATCHv3 6/6] fpga: stratix10-soc: extend driver for bitstream authentication To: Moritz Fischer Cc: trix@redhat.com, gregkh@linuxfoundation.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, dinguyen@kernel.org, sridhar.rajagopal@intel.com, Richard Gong References: <1611608188-25621-1-git-send-email-richard.gong@linux.intel.com> <1611608188-25621-7-git-send-email-richard.gong@linux.intel.com> From: Richard Gong Message-ID: Date: Tue, 26 Jan 2021 08:00:46 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Moritz, On 1/25/21 11:09 PM, Moritz Fischer wrote: > On Mon, Jan 25, 2021 at 02:56:28PM -0600, richard.gong@linux.intel.com wrote: >> From: Richard Gong >> >> Extend FPGA manager driver to support FPGA bitstream authentication on >> Intel SocFPGA platforms. >> >> Signed-off-by: Richard Gong >> --- >> v3: add handle to retriev the firmware version to keep driver >> back compatible >> v2: use flag defined in stratix10-svc driver >> --- >> drivers/fpga/stratix10-soc.c | 62 +++++++++++++++++++++++++++++++++++++++----- >> 1 file changed, 56 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c >> index 657a70c..59d738c 100644 >> --- a/drivers/fpga/stratix10-soc.c >> +++ b/drivers/fpga/stratix10-soc.c >> @@ -24,6 +24,10 @@ >> #define S10_BUFFER_TIMEOUT (msecs_to_jiffies(SVC_RECONFIG_BUFFER_TIMEOUT_MS)) >> #define S10_RECONFIG_TIMEOUT (msecs_to_jiffies(SVC_RECONFIG_REQUEST_TIMEOUT_MS)) >> >> +#define INVALID_FIRMWARE_VERSION 0xFFFF >> +typedef void (*s10_callback)(struct stratix10_svc_client *client, >> + struct stratix10_svc_cb_data *data); >> + >> /* >> * struct s10_svc_buf >> * buf: virtual address of buf provided by service layer >> @@ -40,11 +44,13 @@ struct s10_priv { >> struct completion status_return_completion; >> struct s10_svc_buf svc_bufs[NUM_SVC_BUFS]; >> unsigned long status; >> + unsigned int fw_version; >> }; >> >> static int s10_svc_send_msg(struct s10_priv *priv, >> enum stratix10_svc_command_code command, >> - void *payload, u32 payload_length) >> + void *payload, u32 payload_length, >> + s10_callback callback) >> { >> struct stratix10_svc_chan *chan = priv->chan; >> struct device *dev = priv->client.dev; >> @@ -57,6 +63,7 @@ static int s10_svc_send_msg(struct s10_priv *priv, >> msg.command = command; >> msg.payload = payload; >> msg.payload_length = payload_length; >> + priv->client.receive_cb = callback; >> >> ret = stratix10_svc_send(chan, &msg); >> dev_dbg(dev, "stratix10_svc_send returned status %d\n", ret); >> @@ -134,6 +141,29 @@ static void s10_unlock_bufs(struct s10_priv *priv, void *kaddr) >> } >> >> /* >> + * s10_fw_version_callback - callback for the version of running firmware >> + * @client: service layer client struct >> + * @data: message from service layer >> + */ >> +static void s10_fw_version_callback(struct stratix10_svc_client *client, >> + struct stratix10_svc_cb_data *data) >> +{ >> + struct s10_priv *priv = client->priv; >> + unsigned int *version = (unsigned int *)data->kaddr1; >> + >> + if (data->status == BIT(SVC_STATUS_OK)) >> + priv->fw_version = *version; >> + else if (data->status == BIT(SVC_STATUS_NO_SUPPORT)) >> + dev_warn(client->dev, >> + "FW doesn't support bitstream authentication\n"); >> + else >> + dev_err(client->dev, "Failed to get FW version %lu\n", >> + BIT(data->status)); >> + >> + complete(&priv->status_return_completion); >> +} >> + >> +/* >> * s10_receive_callback - callback for service layer to use to provide client >> * (this driver) messages received through the mailbox. >> * client: service layer client struct >> @@ -186,13 +216,22 @@ static int s10_ops_write_init(struct fpga_manager *mgr, >> if (info->flags & FPGA_MGR_PARTIAL_RECONFIG) { >> dev_dbg(dev, "Requesting partial reconfiguration.\n"); >> ctype.flags |= BIT(COMMAND_RECONFIG_FLAG_PARTIAL); >> + } else if (info->flags & FPGA_MGR_BITSTREM_AUTHENTICATION) { > BITSTREAM ;-) > > Nit: Maybe the flag could be FPGA_MGR_BITSTREAM_AUTHENTICATE and/or > FPGA_MGR_BITSTREAM_AUTH_AND_PERSIST. Thanks, I will correct both in next submission. >> + if (priv->fw_version == INVALID_FIRMWARE_VERSION) { >> + dev_err(dev, "FW doesn't support\n"); >> + return -EINVAL; >> + } >> + >> + dev_dbg(dev, "Requesting bitstream authentication.\n"); >> + ctype.flags |= BIT(COMMAND_AUTHENTICATE_BITSTREAM); >> } else { >> dev_dbg(dev, "Requesting full reconfiguration.\n"); >> } >> >> reinit_completion(&priv->status_return_completion); >> ret = s10_svc_send_msg(priv, COMMAND_RECONFIG, >> - &ctype, sizeof(ctype)); >> + &ctype, sizeof(ctype), >> + s10_receive_callback); >> if (ret < 0) >> goto init_done; >> >> @@ -259,7 +298,7 @@ static int s10_send_buf(struct fpga_manager *mgr, const char *buf, size_t count) >> svc_buf = priv->svc_bufs[i].buf; >> memcpy(svc_buf, buf, xfer_sz); >> ret = s10_svc_send_msg(priv, COMMAND_RECONFIG_DATA_SUBMIT, >> - svc_buf, xfer_sz); >> + svc_buf, xfer_sz, s10_receive_callback); >> if (ret < 0) { >> dev_err(dev, >> "Error while sending data to service layer (%d)", ret); >> @@ -303,7 +342,7 @@ static int s10_ops_write(struct fpga_manager *mgr, const char *buf, >> >> ret = s10_svc_send_msg( >> priv, COMMAND_RECONFIG_DATA_CLAIM, >> - NULL, 0); >> + NULL, 0, s10_receive_callback); >> if (ret < 0) >> break; >> } >> @@ -357,7 +396,8 @@ static int s10_ops_write_complete(struct fpga_manager *mgr, >> do { >> reinit_completion(&priv->status_return_completion); >> >> - ret = s10_svc_send_msg(priv, COMMAND_RECONFIG_STATUS, NULL, 0); >> + ret = s10_svc_send_msg(priv, COMMAND_RECONFIG_STATUS, >> + NULL, 0, s10_receive_callback); >> if (ret < 0) >> break; >> >> @@ -411,8 +451,9 @@ static int s10_probe(struct platform_device *pdev) >> if (!priv) >> return -ENOMEM; >> >> + priv->fw_version = INVALID_FIRMWARE_VERSION; >> priv->client.dev = dev; >> - priv->client.receive_cb = s10_receive_callback; >> + priv->client.receive_cb = NULL; >> priv->client.priv = priv; >> >> priv->chan = stratix10_svc_request_channel_byname(&priv->client, >> @@ -440,6 +481,15 @@ static int s10_probe(struct platform_device *pdev) >> goto probe_err; >> } >> >> + /* get the running firmware version */ >> + ret = s10_svc_send_msg(priv, COMMAND_FIRMWARE_VERSION, >> + NULL, 0, s10_fw_version_callback); >> + if (ret) { >> + dev_err(dev, "couldn't get firmware version\n"); >> + fpga_mgr_free(mgr); >> + goto probe_err; >> + } >> + >> platform_set_drvdata(pdev, mgr); >> return ret; >> >> -- >> 2.7.4 >> > Thanks, > Moritz > Regards, Richard