From patchwork Mon Jun 15 19:41:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11605585 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BFA4760D for ; Mon, 15 Jun 2020 19:42:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4F9B208C3 for ; Mon, 15 Jun 2020 19:42:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="dkbPpsjD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729836AbgFOTmE (ORCPT ); Mon, 15 Jun 2020 15:42:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729839AbgFOTmC (ORCPT ); Mon, 15 Jun 2020 15:42:02 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ED06DC08C5C3 for ; Mon, 15 Jun 2020 12:42:01 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id s88so298249pjb.5 for ; Mon, 15 Jun 2020 12:42:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id; bh=HYEguIgCbs72qU3RQvrxRYIXfQehsVQ9xr9hBAlsIv0=; b=dkbPpsjDjU6G8ru0ttn46RPKVPgFK19yRuH9PgkL25/VkhONVT6d1SRaSawFEkIh3P q2G9dK2MaZXWR8pk5Y2Y1Mt/EV6grY8Q7bXEvq8BPnQgIoE3kerT+l+D6ATbDm2I1+nO Ua7wjPbwO7pX5wW8J0wsCoA2UyrRPH+drXvz8= 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; bh=HYEguIgCbs72qU3RQvrxRYIXfQehsVQ9xr9hBAlsIv0=; b=IxyZ8r41rEMrgGlgMZxCS23r+1LY/NaCfDsw/DrcfL+W+Xeeq28MKmSq6//Sk9Y9oi i8X4NMblgSJsoFgr0ipZLKoiGiheGaO2pPcwKj/MWhO2pq+8907XvZ5YOysqmAPBJi7B zcgSlefRhQBjnuf5IfweGubdFrdA9E8GlRp5k2Lc2Ou1YlkdshMxSrClwyjZrjUb4V4x XvCCa3Mom3xFeJRdqfDVJ5/s7EdzOxfNTBaQPil63pndDT/g9UQ6Rf1EFN8nIvsNdXA3 tKvKsWfrnq07ljokvpwRVEFCI7RS5Ebihqd11wJMzCXEYLUVEPQVN//bZhDm6cKMTaMK A3gg== X-Gm-Message-State: AOAM533+Mr65uBzsWN9jBREGd4Xj3x3Pb/xesM9LsEtG9pNSXPk3N1TP KBKerO3LFM0JqCcgcE6qk25DUA== X-Google-Smtp-Source: ABdhPJxlw3cBZEDOlyThQIHDpnQsA/kqwh3v+wvEHfOnz+hY04zT6ELbTDVN9pSlaag4HAinH9avGg== X-Received: by 2002:a17:902:b411:: with SMTP id x17mr22579249plr.272.1592250120762; Mon, 15 Jun 2020 12:42:00 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id gq8sm293663pjb.14.2020.06.15.12.41.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jun 2020 12:42:00 -0700 (PDT) From: Scott Branden To: Luis Chamberlain , Wolfram Sang , Greg Kroah-Hartman , David Brown , Alexander Viro , Shuah Khan , bjorn.andersson@linaro.org, Shuah Khan , Arnd Bergmann Cc: Mimi Zohar , "Rafael J . Wysocki" , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-fsdevel@vger.kernel.org, BCM Kernel Feedback , Olof Johansson , Andrew Morton , Dan Carpenter , Colin Ian King , Kees Cook , Takashi Iwai , linux-kselftest@vger.kernel.org, Andy Gross , linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, Scott Branden Subject: [PATCH v9 0/8] firmware: add request_partial_firmware_into_buf Date: Mon, 15 Jun 2020 12:41:43 -0700 Message-Id: <20200615194151.7011-1-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This patch series adds partial read support via a new call request_partial_firmware_into_buf. Such support is needed when the whole file is not needed and/or only a smaller portion of the file will fit into allocated memory at any one time. In order to accept the enhanced API it has been requested that kernel selftests and upstreamed driver utilize the API enhancement and so are included in this patch series. Also in this patch series is the addition of a new Broadcom VK driver utilizing the new request_firmware_into_buf enhanced API. Further comment followed to add IMA support of the partial reads originating from request_firmware_into_buf calls. Changes from v8: - correct compilation error when CONFIG_FW_LOADER not defined Changes from v7: - removed swiss army knife kernel_pread_* style approach and simply add offset parameter in addition to those needed in kernel_read_* functions thus removing need for kernel_pread enum Changes from v6: - update ima_post_read_file check on IMA_FIRMWARE_PARTIAL_READ - adjust new driver i2c-slave-eeprom.c use of request_firmware_into_buf - remove an extern Changes from v5: - add IMA FIRMWARE_PARTIAL_READ support - change kernel pread flags to enum - removed legacy support from driver - driver fixes Changes from v4: - handle reset issues if card crashes - allow driver to have min required msix - add card utilization information Changes from v3: - fix sparse warnings - fix printf format specifiers for size_t - fix 32-bit cross-compiling reports 32-bit shifts - use readl/writel,_relaxed to access pci ioremap memory, removed memory barriers and volatile keyword with such change - driver optimizations for interrupt/poll functionalities Changes from v2: - remove unnecessary code and mutex locks in lib/test_firmware.c - remove VK_IOCTL_ACCESS_BAR support from driver and use pci sysfs instead - remove bitfields - remove Kconfig default m - adjust formatting and some naming based on feedback - fix error handling conditions - use appropriate return codes - use memcpy_toio instead of direct access to PCIE bar Scott Branden (8): fs: introduce kernel_pread_file* support firmware: add request_partial_firmware_into_buf test_firmware: add partial read support for request_firmware_into_buf firmware: test partial file reads of request_partial_firmware_into_buf bcm-vk: add bcm_vk UAPI misc: bcm-vk: add Broadcom VK driver MAINTAINERS: bcm-vk: add maintainer for Broadcom VK Driver ima: add FIRMWARE_PARTIAL_READ support MAINTAINERS | 7 + drivers/base/firmware_loader/firmware.h | 5 + drivers/base/firmware_loader/main.c | 79 +- drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/bcm-vk/Kconfig | 29 + drivers/misc/bcm-vk/Makefile | 11 + drivers/misc/bcm-vk/bcm_vk.h | 407 +++++ drivers/misc/bcm-vk/bcm_vk_dev.c | 1310 +++++++++++++++ drivers/misc/bcm-vk/bcm_vk_msg.c | 1440 +++++++++++++++++ drivers/misc/bcm-vk/bcm_vk_msg.h | 202 +++ drivers/misc/bcm-vk/bcm_vk_sg.c | 271 ++++ drivers/misc/bcm-vk/bcm_vk_sg.h | 60 + drivers/misc/bcm-vk/bcm_vk_tty.c | 352 ++++ fs/exec.c | 93 +- include/linux/firmware.h | 12 + include/linux/fs.h | 15 + include/uapi/linux/misc/bcm_vk.h | 99 ++ lib/test_firmware.c | 154 +- security/integrity/ima/ima_main.c | 24 +- .../selftests/firmware/fw_filesystem.sh | 80 + 21 files changed, 4599 insertions(+), 53 deletions(-) create mode 100644 drivers/misc/bcm-vk/Kconfig create mode 100644 drivers/misc/bcm-vk/Makefile create mode 100644 drivers/misc/bcm-vk/bcm_vk.h create mode 100644 drivers/misc/bcm-vk/bcm_vk_dev.c create mode 100644 drivers/misc/bcm-vk/bcm_vk_msg.c create mode 100644 drivers/misc/bcm-vk/bcm_vk_msg.h create mode 100644 drivers/misc/bcm-vk/bcm_vk_sg.c create mode 100644 drivers/misc/bcm-vk/bcm_vk_sg.h create mode 100644 drivers/misc/bcm-vk/bcm_vk_tty.c create mode 100644 include/uapi/linux/misc/bcm_vk.h