From patchwork Wed Apr 29 17:09:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11517937 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 312D013B2 for ; Wed, 29 Apr 2020 17:09:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1545520B1F for ; Wed, 29 Apr 2020 17:09:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="dFhGW0VU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726961AbgD2RJc (ORCPT ); Wed, 29 Apr 2020 13:09:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726773AbgD2RJb (ORCPT ); Wed, 29 Apr 2020 13:09:31 -0400 Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 933E8C035494 for ; Wed, 29 Apr 2020 10:09:31 -0700 (PDT) Received: by mail-pf1-x443.google.com with SMTP id y25so1368605pfn.5 for ; Wed, 29 Apr 2020 10:09:31 -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=XRf8GObyFyiu0kikag+9wy7ttN3b1p/9KRQUdGvi0B8=; b=dFhGW0VUHxp3OA589kT5FEsTI0gcW9DZ9PSljRlxhccRour0WECCxKllvJJbOjgqls QGiR2/d3lgSmvsGENz1m/eNxyxrzop0FmghlK1zgmY+ibt3KYeSqqjL1ByoEaqRYUWMX PMN7i6IYACVz2agI2sR0lM/b6AImqlOllicSw= 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=XRf8GObyFyiu0kikag+9wy7ttN3b1p/9KRQUdGvi0B8=; b=QNg/cAp9/BXL5xMURWiQ9GAQYypX5EvoXUmLMAtWH372Jeqq8z3mg24P5dXOFx8z7f w850tq+qNHsrHyQg9ZifjFTuDyR3CVqqjiYJzMGZ/EbeI4U05lih7YC5VY0BJH41mmMy OlEsuXobfd9xsiixx/7dWOeyEJoSuZ0iBbCu3XISfcXF32GS5YQUTs3VqQClbjC5hPfs yFxsDmDXf1dXxV7HE/9gQf6+IcMvnJgbjzJAMirvlh5hehFpeOHAUlnCMiUP0a+4nV9T aqSZ8LlNZi7x0bsvH3hqjib2gFsYxQKpTMYhEyp+yZEeJxdcoCbqshtmy5MhJ61mujzo f5Cg== X-Gm-Message-State: AGi0PuZNFTuS5Cnc66SPYuP5eDLKa3Aw073BKLInuMqS3ymEgZ2yz4OM jgs1zLXDtllt0P9d9U4e3C40zA== X-Google-Smtp-Source: APiQypKbkmBWioZSe35zwE5e39r7ePGHkonrurn32H0uEpW6G6k6V8t8gVW+oaC2HGwZk/j58okUZg== X-Received: by 2002:aa7:943c:: with SMTP id y28mr36128122pfo.171.1588180170916; Wed, 29 Apr 2020 10:09:30 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:29 -0700 (PDT) From: Scott Branden To: Luis Chamberlain , Greg Kroah-Hartman , David Brown , Alexander Viro , Shuah Khan , bjorn.andersson@linaro.org, Shuah Khan , Arnd Bergmann Cc: "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 , Scott Branden Subject: [PATCH v4 0/7] firmware: add partial read support in request_firmware_into_buf Date: Wed, 29 Apr 2020 10:09:07 -0700 Message-Id: <20200429170914.30976-1-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This patch series adds partial read support in request_firmware_into_buf. 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. 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 (7): fs: introduce kernel_pread_file* support firmware: add offset to request_firmware_into_buf test_firmware: add partial read support for request_firmware_into_buf firmware: test partial file reads of request_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 MAINTAINERS | 7 + drivers/base/firmware_loader/firmware.h | 5 + drivers/base/firmware_loader/main.c | 52 +- drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/bcm-vk/Kconfig | 29 + drivers/misc/bcm-vk/Makefile | 12 + drivers/misc/bcm-vk/bcm_vk.h | 412 +++++ drivers/misc/bcm-vk/bcm_vk_dev.c | 1211 ++++++++++++++ drivers/misc/bcm-vk/bcm_vk_legacy.c | 89 ++ drivers/misc/bcm-vk/bcm_vk_msg.c | 1414 +++++++++++++++++ drivers/misc/bcm-vk/bcm_vk_msg.h | 195 +++ 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 ++++ drivers/soc/qcom/mdt_loader.c | 7 +- fs/exec.c | 96 +- include/linux/firmware.h | 8 +- include/linux/fs.h | 20 + include/uapi/linux/misc/bcm_vk.h | 99 ++ lib/test_firmware.c | 144 +- .../selftests/firmware/fw_filesystem.sh | 80 + 22 files changed, 4516 insertions(+), 49 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_legacy.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