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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 67F4FC433E0 for ; Fri, 29 May 2020 08:27:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 42D0E2075A for ; Fri, 29 May 2020 08:27:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="fMixoOPZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726893AbgE2I1e (ORCPT ); Fri, 29 May 2020 04:27:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726862AbgE2I10 (ORCPT ); Fri, 29 May 2020 04:27:26 -0400 Received: from mail-lj1-x244.google.com (mail-lj1-x244.google.com [IPv6:2a00:1450:4864:20::244]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 140B7C03E969 for ; Fri, 29 May 2020 01:27:26 -0700 (PDT) Received: by mail-lj1-x244.google.com with SMTP id b6so1584795ljj.1 for ; Fri, 29 May 2020 01:27:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Ly/hqC+OpwfmKTz5BxiBCk11qr5IjD5u5LkJ+5oge9k=; b=fMixoOPZX9wwxzXYWIK3T9u257kMOLufFfxlZ6VG7Xi5Aiw6k1i08rE/cCqEgFBuYs kDYZRtQyZj16hXmhfq2TJpjZP2Jahqy6RXjl4dtwq5ApR7QRfo7oYCZwGCLDw1L/EUc2 O1dNAXdCUbIc9XeHW8Kk+m9AQEiIm5ObrL1v/ynzHLwl0jbLMzfwa3xuxIRbbswuIkG9 8zh/mt8BIRGga9pC8An7dICBAdY47HsPYLyQsZLIh72GOSXU7RoHhm9K+F1szaj4gvFu SG0V5dUZ3CsFiRpppHPk3mWZqFbe1USvDIdcQdYsdeneJMtN9Dkr7+IUD8r+gADBNYKZ s3Nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Ly/hqC+OpwfmKTz5BxiBCk11qr5IjD5u5LkJ+5oge9k=; b=lrC+wM84CO+dcoaFyuhuwSwikqjI7IrVNOxJ3iGXssCEVADqpIAuD6MBqD4gGyCYQ9 g3vr2qbJdGM2pDJHlDV5fDiP5HQPTC7vHDMiXkgbT87jPSFvo97OyrAgH8D9rMSUaZec 8M9fnucyavuyGxjKsN2H1oh3ZDbOQ2NetxBqYWvXDh7XnDTwOeAbpp2j6qGB51B0aHBX SNHQDP2+ub7U6q3d+at66p6DycdPU208ZPMzA6vyrR2oBauB+I79yW6+ylShipvPdWNI 9bi1IocP2x48ArDB6cOebVt/ms9MjsS6/AIzHl4OvonqlcPanYbhF9aS1f12SGXffZBv sPZQ== X-Gm-Message-State: AOAM532hkt5eE423NIk5YXur8sphJYlnmEJS6H5nl1mgTsn9cUoUYCGS IzH/0fpcgldem03+6uWHKZWXvlYNBKA= X-Google-Smtp-Source: ABdhPJz/Iw8lBOjnYoGclA3SoKAUkYMHpXffSMuQbyC0cSy5cch0eUUf3a6JK59YZDC+1JKnlZoX/A== X-Received: by 2002:a2e:998c:: with SMTP id w12mr3622599lji.143.1590740844214; Fri, 29 May 2020 01:27:24 -0700 (PDT) Received: from localhost.localdomain ([176.59.41.83]) by smtp.gmail.com with ESMTPSA id y20sm1878450lji.31.2020.05.29.01.27.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2020 01:27:23 -0700 (PDT) From: Maxim Uvarov To: linux-kernel@vger.kernel.org, tee-dev@lists.linaro.org Cc: peterhuewe@gmx.de, jarkko.sakkinen@linux.intel.com, jgg@ziepe.ca, gregkh@linuxfoundation.org, jens.wiklander@linaro.org, linux-integrity@vger.kernel.org, arnd@linaro.org, sumit.garg@linaro.org, Maxim Uvarov Subject: [PATCHv5 3/3] tpm_ftpm_tee: register driver on TEE bus Date: Fri, 29 May 2020 11:27:01 +0300 Message-Id: <20200529082701.13457-4-maxim.uvarov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200529082701.13457-1-maxim.uvarov@linaro.org> References: <20200529082701.13457-1-maxim.uvarov@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Register driver on the TEE bus. The module tee registers bus, and module optee calls optee_enumerate_devices() to scan all devices on the bus. Trusted Application for this driver can be Early TA's (can be compiled into optee-os). In that case it will be on OPTEE bus before linux booting. Also optee-suplicant application is needed to be loaded between OPTEE module and ftpm module to maintain functionality for fTPM driver. Signed-off-by: Maxim Uvarov Suggested-by: Sumit Garg Suggested-by: Arnd Bergmann --- drivers/char/tpm/tpm_ftpm_tee.c | 70 ++++++++++++++++++++++++++++----- 1 file changed, 60 insertions(+), 10 deletions(-) diff --git a/drivers/char/tpm/tpm_ftpm_tee.c b/drivers/char/tpm/tpm_ftpm_tee.c index 22bf553ccf9d..28da638360d8 100644 --- a/drivers/char/tpm/tpm_ftpm_tee.c +++ b/drivers/char/tpm/tpm_ftpm_tee.c @@ -214,11 +214,10 @@ static int ftpm_tee_match(struct tee_ioctl_version_data *ver, const void *data) * Return: * On success, 0. On failure, -errno. */ -static int ftpm_tee_probe(struct platform_device *pdev) +static int ftpm_tee_probe(struct device *dev) { int rc; struct tpm_chip *chip; - struct device *dev = &pdev->dev; struct ftpm_tee_private *pvt_data = NULL; struct tee_ioctl_open_session_arg sess_arg; @@ -297,6 +296,13 @@ static int ftpm_tee_probe(struct platform_device *pdev) return rc; } +static int ftpm_plat_tee_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + return ftpm_tee_probe(dev); +} + /** * ftpm_tee_remove() - remove the TPM device * @pdev: the platform_device description. @@ -304,9 +310,9 @@ static int ftpm_tee_probe(struct platform_device *pdev) * Return: * 0 always. */ -static int ftpm_tee_remove(struct platform_device *pdev) +static int ftpm_tee_remove(struct device *dev) { - struct ftpm_tee_private *pvt_data = dev_get_drvdata(&pdev->dev); + struct ftpm_tee_private *pvt_data = dev_get_drvdata(dev); /* Release the chip */ tpm_chip_unregister(pvt_data->chip); @@ -328,11 +334,18 @@ static int ftpm_tee_remove(struct platform_device *pdev) return 0; } +static int ftpm_plat_tee_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + return ftpm_tee_remove(dev); +} + /** * ftpm_tee_shutdown() - shutdown the TPM device * @pdev: the platform_device description. */ -static void ftpm_tee_shutdown(struct platform_device *pdev) +static void ftpm_plat_tee_shutdown(struct platform_device *pdev) { struct ftpm_tee_private *pvt_data = dev_get_drvdata(&pdev->dev); @@ -347,17 +360,54 @@ static const struct of_device_id of_ftpm_tee_ids[] = { }; MODULE_DEVICE_TABLE(of, of_ftpm_tee_ids); -static struct platform_driver ftpm_tee_driver = { +static struct platform_driver ftpm_tee_plat_driver = { .driver = { .name = "ftpm-tee", .of_match_table = of_match_ptr(of_ftpm_tee_ids), }, - .probe = ftpm_tee_probe, - .remove = ftpm_tee_remove, - .shutdown = ftpm_tee_shutdown, + .shutdown = ftpm_plat_tee_shutdown, + .probe = ftpm_plat_tee_probe, + .remove = ftpm_plat_tee_remove, +}; + +/* UUID of the fTPM TA */ +static const struct tee_client_device_id optee_ftpm_id_table[] = { + {UUID_INIT(0xbc50d971, 0xd4c9, 0x42c4, + 0x82, 0xcb, 0x34, 0x3f, 0xb7, 0xf3, 0x78, 0x96)}, + {} }; -module_platform_driver(ftpm_tee_driver); +MODULE_DEVICE_TABLE(tee, optee_ftpm_id_table); + +static struct tee_client_driver ftpm_tee_driver = { + .id_table = optee_ftpm_id_table, + .driver = { + .name = "optee-ftpm", + .bus = &tee_bus_type, + .probe = ftpm_tee_probe, + .remove = ftpm_tee_remove, + }, +}; + +static int __init ftpm_mod_init(void) +{ + int rc; + + rc = platform_driver_register(&ftpm_tee_plat_driver); + if (rc) + return rc; + + return driver_register(&ftpm_tee_driver.driver); +} + +static void __exit ftpm_mod_exit(void) +{ + platform_driver_unregister(&ftpm_tee_plat_driver); + driver_unregister(&ftpm_tee_driver.driver); +} + +module_init(ftpm_mod_init); +module_exit(ftpm_mod_exit); MODULE_AUTHOR("Thirupathaiah Annapureddy "); MODULE_DESCRIPTION("TPM Driver for fTPM TA in TEE"); -- 2.17.1