From patchwork Wed Apr 29 17:09:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11517977 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 A950C112C for ; Wed, 29 Apr 2020 17:10:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8BE5F20B80 for ; Wed, 29 Apr 2020 17:10:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="ETPfZUIP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727049AbgD2RJg (ORCPT ); Wed, 29 Apr 2020 13:09:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727030AbgD2RJg (ORCPT ); Wed, 29 Apr 2020 13:09:36 -0400 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3FB59C035495 for ; Wed, 29 Apr 2020 10:09:36 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id n24so1047838plp.13 for ; Wed, 29 Apr 2020 10:09:36 -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:in-reply-to:references; bh=fgv/fcDXTDFVmuGXIXdyLKuOfq35HUlELweudxMRWMs=; b=ETPfZUIPDFks97PzHy9SYycnRBj3zPyGyr2HWelFElXhwDxKWHijOKl4DlKhU2Ynmn tD+GpNljiU5PLxr7nZ5gldB6FBUUSQHUlKAvc7f2qc4zFdxARH7Kx6n3m5gCSGfb+pH1 WSqJ95S522e+I9+aKToovZW41hBQY/H9LsAQs= 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=fgv/fcDXTDFVmuGXIXdyLKuOfq35HUlELweudxMRWMs=; b=aYFiRrrvt9S7jc2Sli45OQLaJGeQBigGs44XfaO1nXMe/hymxuyYY6lYe/rMT2PCLr dxOKjMJMInrYN8gxJRUEowEAliiYli9rgEgdCZjYS6ecsrw9tw53NK3qxJZN7y2x+Ed9 vad6NSpqYv4ZdchkKGo6kyF29GNAeu8oVR5nOKo7ZLJgoaxiBf4lyyeFS+bHpeWG0ppr LEJFeyAlYv5/dDaR0NDYAZxLYRhzYKc1IJ4K60NHjZz87bHOfQ1gyIaZAt85w3CD8Cny fVggzV6z7T/x2YctbsTjM4kGpDYxk0pN5uDbAiDyAxzlia5PxLHyzZmda4nSnPAeOk/Q gztQ== X-Gm-Message-State: AGi0PuYcPcYkbk8n8YYG3yNcqIVTnIIc5xn/S5xBYMhJZSrjR4D9/d+O dzMHot368LgpS4famsC/iUwRrA== X-Google-Smtp-Source: APiQypJ361WVRLBikA65VnfhrEKyLsAsecq7btVruT5cPl6M4Ul7pMqwXzyDpu50Q/NhpZZ8B/STzQ== X-Received: by 2002:a17:902:6949:: with SMTP id k9mr35236624plt.211.1588180174165; Wed, 29 Apr 2020 10:09:34 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:33 -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 1/7] fs: introduce kernel_pread_file* support Date: Wed, 29 Apr 2020 10:09:08 -0700 Message-Id: <20200429170914.30976-2-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429170914.30976-1-scott.branden@broadcom.com> References: <20200429170914.30976-1-scott.branden@broadcom.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add kernel_pread_file* support to kernel to allow for partial read of files with an offset into the file. Existing kernel_read_file functions call new kernel_pread_file functions with offset=0 and flags=KERNEL_PREAD_FLAG_WHOLE. Signed-off-by: Scott Branden --- fs/exec.c | 96 ++++++++++++++++++++++++++++++++++++---------- include/linux/fs.h | 20 ++++++++++ 2 files changed, 95 insertions(+), 21 deletions(-) diff --git a/fs/exec.c b/fs/exec.c index 06b4c550af5d..cfab212fab9d 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -896,10 +896,14 @@ struct file *open_exec(const char *name) } EXPORT_SYMBOL(open_exec); -int kernel_read_file(struct file *file, void **buf, loff_t *size, - loff_t max_size, enum kernel_read_file_id id) -{ - loff_t i_size, pos; +int kernel_pread_file(struct file *file, void **buf, loff_t *size, + loff_t pos, loff_t max_size, unsigned int flags, + enum kernel_read_file_id id) +{ + loff_t alloc_size; + loff_t buf_pos; + loff_t read_end; + loff_t i_size; ssize_t bytes = 0; int ret; @@ -919,21 +923,31 @@ int kernel_read_file(struct file *file, void **buf, loff_t *size, ret = -EINVAL; goto out; } - if (i_size > SIZE_MAX || (max_size > 0 && i_size > max_size)) { + + /* Default read to end of file */ + read_end = i_size; + + /* Allow reading partial portion of file */ + if ((flags & KERNEL_PREAD_FLAG_PART) && + (i_size > (pos + max_size))) + read_end = pos + max_size; + + alloc_size = read_end - pos; + if (i_size > SIZE_MAX || (max_size > 0 && alloc_size > max_size)) { ret = -EFBIG; goto out; } if (id != READING_FIRMWARE_PREALLOC_BUFFER) - *buf = vmalloc(i_size); + *buf = vmalloc(alloc_size); if (!*buf) { ret = -ENOMEM; goto out; } - pos = 0; - while (pos < i_size) { - bytes = kernel_read(file, *buf + pos, i_size - pos, &pos); + buf_pos = 0; + while (pos < read_end) { + bytes = kernel_read(file, *buf + buf_pos, read_end - pos, &pos); if (bytes < 0) { ret = bytes; goto out_free; @@ -941,14 +955,16 @@ int kernel_read_file(struct file *file, void **buf, loff_t *size, if (bytes == 0) break; + + buf_pos += bytes; } - if (pos != i_size) { + if (pos != read_end) { ret = -EIO; goto out_free; } - ret = security_kernel_post_read_file(file, *buf, i_size, id); + ret = security_kernel_post_read_file(file, *buf, alloc_size, id); if (!ret) *size = pos; @@ -964,10 +980,20 @@ int kernel_read_file(struct file *file, void **buf, loff_t *size, allow_write_access(file); return ret; } +EXPORT_SYMBOL_GPL(kernel_pread_file); + +int kernel_read_file(struct file *file, void **buf, loff_t *size, + loff_t max_size, enum kernel_read_file_id id) +{ + return kernel_pread_file(file, buf, size, 0, max_size, + KERNEL_PREAD_FLAG_WHOLE, id); +} EXPORT_SYMBOL_GPL(kernel_read_file); -int kernel_read_file_from_path(const char *path, void **buf, loff_t *size, - loff_t max_size, enum kernel_read_file_id id) +int kernel_pread_file_from_path(const char *path, void **buf, + loff_t *size, loff_t pos, + loff_t max_size, unsigned int flags, + enum kernel_read_file_id id) { struct file *file; int ret; @@ -979,15 +1005,25 @@ int kernel_read_file_from_path(const char *path, void **buf, loff_t *size, if (IS_ERR(file)) return PTR_ERR(file); - ret = kernel_read_file(file, buf, size, max_size, id); + ret = kernel_pread_file(file, buf, size, pos, max_size, flags, id); fput(file); return ret; } +EXPORT_SYMBOL_GPL(kernel_pread_file_from_path); + +int kernel_read_file_from_path(const char *path, void **buf, loff_t *size, + loff_t max_size, enum kernel_read_file_id id) +{ + return kernel_pread_file_from_path(path, buf, size, 0, max_size, + KERNEL_PREAD_FLAG_WHOLE, id); +} EXPORT_SYMBOL_GPL(kernel_read_file_from_path); -int kernel_read_file_from_path_initns(const char *path, void **buf, - loff_t *size, loff_t max_size, - enum kernel_read_file_id id) +extern int kernel_pread_file_from_path_initns(const char *path, void **buf, + loff_t *size, loff_t pos, + loff_t max_size, + unsigned int flags, + enum kernel_read_file_id id) { struct file *file; struct path root; @@ -1005,14 +1041,24 @@ int kernel_read_file_from_path_initns(const char *path, void **buf, if (IS_ERR(file)) return PTR_ERR(file); - ret = kernel_read_file(file, buf, size, max_size, id); + ret = kernel_pread_file(file, buf, size, pos, max_size, flags, id); fput(file); return ret; } +EXPORT_SYMBOL_GPL(kernel_pread_file_from_path_initns); + +int kernel_read_file_from_path_initns(const char *path, void **buf, + loff_t *size, loff_t max_size, + enum kernel_read_file_id id) +{ + return kernel_pread_file_from_path_initns(path, buf, size, 0, max_size, + KERNEL_PREAD_FLAG_WHOLE, id); +} EXPORT_SYMBOL_GPL(kernel_read_file_from_path_initns); -int kernel_read_file_from_fd(int fd, void **buf, loff_t *size, loff_t max_size, - enum kernel_read_file_id id) +int kernel_pread_file_from_fd(int fd, void **buf, loff_t *size, loff_t pos, + loff_t max_size, unsigned int flags, + enum kernel_read_file_id id) { struct fd f = fdget(fd); int ret = -EBADF; @@ -1020,11 +1066,19 @@ int kernel_read_file_from_fd(int fd, void **buf, loff_t *size, loff_t max_size, if (!f.file) goto out; - ret = kernel_read_file(f.file, buf, size, max_size, id); + ret = kernel_pread_file(f.file, buf, size, pos, max_size, flags, id); out: fdput(f); return ret; } +EXPORT_SYMBOL_GPL(kernel_pread_file_from_fd); + +int kernel_read_file_from_fd(int fd, void **buf, loff_t *size, loff_t max_size, + enum kernel_read_file_id id) +{ + return kernel_pread_file_from_fd(fd, buf, size, 0, max_size, + KERNEL_PREAD_FLAG_WHOLE, id); +} EXPORT_SYMBOL_GPL(kernel_read_file_from_fd); ssize_t read_code(struct file *file, unsigned long addr, loff_t pos, size_t len) diff --git a/include/linux/fs.h b/include/linux/fs.h index 4f6f59b4f22a..03441fbcad6c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3014,12 +3014,32 @@ static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id) return kernel_read_file_str[id]; } +/* Flags used by kernel_pread_file functions */ +#define KERNEL_PREAD_FLAG_WHOLE 0x0000 /* Only Allow reading of whole file */ +#define KERNEL_PREAD_FLAG_PART 0x0001 /* Allow reading part of file */ + +extern int kernel_pread_file(struct file *file, void **buf, loff_t *size, + loff_t pos, loff_t max_size, unsigned int flags, + enum kernel_read_file_id id); extern int kernel_read_file(struct file *, void **, loff_t *, loff_t, enum kernel_read_file_id); +extern int kernel_pread_file_from_path(const char *path, void **buf, + loff_t *size, loff_t pos, + loff_t max_size, unsigned int flags, + enum kernel_read_file_id id); extern int kernel_read_file_from_path(const char *, void **, loff_t *, loff_t, enum kernel_read_file_id); +extern int kernel_pread_file_from_path_initns(const char *path, void **buf, + loff_t *size, loff_t pos, + loff_t max_size, + unsigned int flags, + enum kernel_read_file_id id); extern int kernel_read_file_from_path_initns(const char *, void **, loff_t *, loff_t, enum kernel_read_file_id); +extern int kernel_pread_file_from_fd(int fd, void **buf, loff_t *size, + loff_t pos, loff_t max_size, + unsigned int flags, + enum kernel_read_file_id id); extern int kernel_read_file_from_fd(int, void **, loff_t *, loff_t, enum kernel_read_file_id); extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *); From patchwork Wed Apr 29 17:09:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11517963 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 557AC112C for ; 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Wed, 29 Apr 2020 10:09:37 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:36 -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 2/7] firmware: add offset to request_firmware_into_buf Date: Wed, 29 Apr 2020 10:09:09 -0700 Message-Id: <20200429170914.30976-3-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429170914.30976-1-scott.branden@broadcom.com> References: <20200429170914.30976-1-scott.branden@broadcom.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add offset to request_firmware_into_buf to allow for portions of firmware file to be read into a buffer. Necessary where firmware needs to be loaded in portions from file in memory constrained systems. Signed-off-by: Scott Branden --- drivers/base/firmware_loader/firmware.h | 5 +++ drivers/base/firmware_loader/main.c | 52 +++++++++++++++++-------- drivers/soc/qcom/mdt_loader.c | 7 +++- include/linux/firmware.h | 8 +++- lib/test_firmware.c | 4 +- 5 files changed, 55 insertions(+), 21 deletions(-) diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h index 25836a6afc9f..1147dae01148 100644 --- a/drivers/base/firmware_loader/firmware.h +++ b/drivers/base/firmware_loader/firmware.h @@ -32,6 +32,8 @@ * @FW_OPT_FALLBACK_PLATFORM: Enable fallback to device fw copy embedded in * the platform's main firmware. If both this fallback and the sysfs * fallback are enabled, then this fallback will be tried first. + * @FW_OPT_PARTIAL: Allow partial read of firmware instead of needing to read + * entire file. */ enum fw_opt { FW_OPT_UEVENT = BIT(0), @@ -41,6 +43,7 @@ enum fw_opt { FW_OPT_NOCACHE = BIT(4), FW_OPT_NOFALLBACK_SYSFS = BIT(5), FW_OPT_FALLBACK_PLATFORM = BIT(6), + FW_OPT_PARTIAL = BIT(7), }; enum fw_status { @@ -68,6 +71,8 @@ struct fw_priv { void *data; size_t size; size_t allocated_size; + size_t offset; + unsigned int flags; #ifdef CONFIG_FW_LOADER_PAGED_BUF bool is_paged_buf; struct page **pages; diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index 76f79913916d..4552b7bb819f 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -167,7 +167,8 @@ static int fw_cache_piggyback_on_request(const char *name); static struct fw_priv *__allocate_fw_priv(const char *fw_name, struct firmware_cache *fwc, - void *dbuf, size_t size) + void *dbuf, size_t size, + size_t offset, unsigned int flags) { struct fw_priv *fw_priv; @@ -185,6 +186,8 @@ static struct fw_priv *__allocate_fw_priv(const char *fw_name, fw_priv->fwc = fwc; fw_priv->data = dbuf; fw_priv->allocated_size = size; + fw_priv->offset = offset; + fw_priv->flags = flags; fw_state_init(fw_priv); #ifdef CONFIG_FW_LOADER_USER_HELPER INIT_LIST_HEAD(&fw_priv->pending_list); @@ -210,9 +213,11 @@ static struct fw_priv *__lookup_fw_priv(const char *fw_name) static int alloc_lookup_fw_priv(const char *fw_name, struct firmware_cache *fwc, struct fw_priv **fw_priv, void *dbuf, - size_t size, enum fw_opt opt_flags) + size_t size, enum fw_opt opt_flags, + size_t offset) { struct fw_priv *tmp; + unsigned int pread_flags; spin_lock(&fwc->lock); if (!(opt_flags & FW_OPT_NOCACHE)) { @@ -226,7 +231,12 @@ static int alloc_lookup_fw_priv(const char *fw_name, } } - tmp = __allocate_fw_priv(fw_name, fwc, dbuf, size); + if (opt_flags & FW_OPT_PARTIAL) + pread_flags = KERNEL_PREAD_FLAG_PART; + else + pread_flags = KERNEL_PREAD_FLAG_WHOLE; + + tmp = __allocate_fw_priv(fw_name, fwc, dbuf, size, offset, pread_flags); if (tmp) { INIT_LIST_HEAD(&tmp->list); if (!(opt_flags & FW_OPT_NOCACHE)) @@ -495,8 +505,10 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, fw_priv->size = 0; /* load firmware files from the mount namespace of init */ - rc = kernel_read_file_from_path_initns(path, &buffer, - &size, msize, id); + rc = kernel_pread_file_from_path_initns(path, &buffer, + &size, fw_priv->offset, + msize, + fw_priv->flags, id); if (rc) { if (rc != -ENOENT) dev_warn(device, "loading %s failed with error %d\n", @@ -687,7 +699,7 @@ int assign_fw(struct firmware *fw, struct device *device, static int _request_firmware_prepare(struct firmware **firmware_p, const char *name, struct device *device, void *dbuf, size_t size, - enum fw_opt opt_flags) + enum fw_opt opt_flags, size_t offset) { struct firmware *firmware; struct fw_priv *fw_priv; @@ -706,7 +718,7 @@ _request_firmware_prepare(struct firmware **firmware_p, const char *name, } ret = alloc_lookup_fw_priv(name, &fw_cache, &fw_priv, dbuf, size, - opt_flags); + opt_flags, offset); /* * bind with 'priv' now to avoid warning in failure path @@ -753,7 +765,7 @@ static void fw_abort_batch_reqs(struct firmware *fw) static int _request_firmware(const struct firmware **firmware_p, const char *name, struct device *device, void *buf, size_t size, - enum fw_opt opt_flags) + enum fw_opt opt_flags, size_t offset) { struct firmware *fw = NULL; int ret; @@ -767,7 +779,7 @@ _request_firmware(const struct firmware **firmware_p, const char *name, } ret = _request_firmware_prepare(&fw, name, device, buf, size, - opt_flags); + opt_flags, offset); if (ret <= 0) /* error or already assigned */ goto out; @@ -830,7 +842,7 @@ request_firmware(const struct firmware **firmware_p, const char *name, /* Need to pin this module until return */ __module_get(THIS_MODULE); ret = _request_firmware(firmware_p, name, device, NULL, 0, - FW_OPT_UEVENT); + FW_OPT_UEVENT, 0); module_put(THIS_MODULE); return ret; } @@ -857,7 +869,7 @@ int firmware_request_nowarn(const struct firmware **firmware, const char *name, /* Need to pin this module until return */ __module_get(THIS_MODULE); ret = _request_firmware(firmware, name, device, NULL, 0, - FW_OPT_UEVENT | FW_OPT_NO_WARN); + FW_OPT_UEVENT | FW_OPT_NO_WARN, 0); module_put(THIS_MODULE); return ret; } @@ -882,7 +894,7 @@ int request_firmware_direct(const struct firmware **firmware_p, __module_get(THIS_MODULE); ret = _request_firmware(firmware_p, name, device, NULL, 0, FW_OPT_UEVENT | FW_OPT_NO_WARN | - FW_OPT_NOFALLBACK_SYSFS); + FW_OPT_NOFALLBACK_SYSFS, 0); module_put(THIS_MODULE); return ret; } @@ -906,7 +918,7 @@ int firmware_request_platform(const struct firmware **firmware, /* Need to pin this module until return */ __module_get(THIS_MODULE); ret = _request_firmware(firmware, name, device, NULL, 0, - FW_OPT_UEVENT | FW_OPT_FALLBACK_PLATFORM); + FW_OPT_UEVENT | FW_OPT_FALLBACK_PLATFORM, 0); module_put(THIS_MODULE); return ret; } @@ -943,6 +955,8 @@ EXPORT_SYMBOL_GPL(firmware_request_cache); * @device: device for which firmware is being loaded and DMA region allocated * @buf: address of buffer to load firmware into * @size: size of buffer + * @offset: offset into file to read + * @pread_flags: KERNEL_PREAD_FLAG_PART to allow partial file read * * This function works pretty much like request_firmware(), but it doesn't * allocate a buffer to hold the firmware data. Instead, the firmware @@ -953,16 +967,22 @@ EXPORT_SYMBOL_GPL(firmware_request_cache); */ int request_firmware_into_buf(const struct firmware **firmware_p, const char *name, - struct device *device, void *buf, size_t size) + struct device *device, void *buf, size_t size, + size_t offset, unsigned int pread_flags) { int ret; + enum fw_opt opt_flags; if (fw_cache_is_setup(device, name)) return -EOPNOTSUPP; __module_get(THIS_MODULE); + opt_flags = FW_OPT_UEVENT | FW_OPT_NOCACHE; + if (pread_flags & KERNEL_PREAD_FLAG_PART) + opt_flags |= FW_OPT_PARTIAL; + ret = _request_firmware(firmware_p, name, device, buf, size, - FW_OPT_UEVENT | FW_OPT_NOCACHE); + opt_flags, offset); module_put(THIS_MODULE); return ret; } @@ -1001,7 +1021,7 @@ static void request_firmware_work_func(struct work_struct *work) fw_work = container_of(work, struct firmware_work, work); _request_firmware(&fw, fw_work->name, fw_work->device, NULL, 0, - fw_work->opt_flags); + fw_work->opt_flags, 0); fw_work->cont(fw, fw_work->context); put_device(fw_work->device); /* taken in request_firmware_nowait() */ diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c index 24cd193dec55..00f3359f4f61 100644 --- a/drivers/soc/qcom/mdt_loader.c +++ b/drivers/soc/qcom/mdt_loader.c @@ -246,8 +246,11 @@ static int __qcom_mdt_load(struct device *dev, const struct firmware *fw, } else if (phdr->p_filesz) { /* Firmware not large enough, load split-out segments */ sprintf(fw_name + fw_name_len - 3, "b%02d", i); - ret = request_firmware_into_buf(&seg_fw, fw_name, dev, - ptr, phdr->p_filesz); + ret = request_firmware_into_buf + (&seg_fw, fw_name, dev, + ptr, phdr->p_filesz, + 0, + KERNEL_PREAD_FLAG_WHOLE); if (ret) { dev_err(dev, "failed to load %s\n", fw_name); break; diff --git a/include/linux/firmware.h b/include/linux/firmware.h index 4bbd0afd91b7..b98d17fb3bd1 100644 --- a/include/linux/firmware.h +++ b/include/linux/firmware.h @@ -4,6 +4,7 @@ #include #include +#include #include #define FW_ACTION_NOHOTPLUG 0 @@ -53,7 +54,9 @@ int request_firmware_nowait( int request_firmware_direct(const struct firmware **fw, const char *name, struct device *device); int request_firmware_into_buf(const struct firmware **firmware_p, - const char *name, struct device *device, void *buf, size_t size); + const char *name, struct device *device, + void *buf, size_t size, + size_t offset, unsigned int pread_flags); void release_firmware(const struct firmware *fw); #else @@ -98,7 +101,8 @@ static inline int request_firmware_direct(const struct firmware **fw, } static inline int request_firmware_into_buf(const struct firmware **firmware_p, - const char *name, struct device *device, void *buf, size_t size) + const char *name, struct device *device, void *buf, size_t size, + size_t offset, unsigned int pread_flags) { return -EINVAL; } diff --git a/lib/test_firmware.c b/lib/test_firmware.c index 9fee2b93a8d1..55176b0a8318 100644 --- a/lib/test_firmware.c +++ b/lib/test_firmware.c @@ -654,7 +654,9 @@ static int test_fw_run_batch_request(void *data) req->name, req->dev, test_buf, - TEST_FIRMWARE_BUF_SIZE); + TEST_FIRMWARE_BUF_SIZE, + 0, + KERNEL_PREAD_FLAG_WHOLE); if (!req->fw) kfree(test_buf); } else { From patchwork Wed Apr 29 17:09:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11517945 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 7074E13B2 for ; Wed, 29 Apr 2020 17:09:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F2BE20BED for ; Wed, 29 Apr 2020 17:09:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="F8Q2JsPI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727099AbgD2RJm (ORCPT ); Wed, 29 Apr 2020 13:09:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727093AbgD2RJl (ORCPT ); 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Wed, 29 Apr 2020 10:09:40 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:39 -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 3/7] test_firmware: add partial read support for request_firmware_into_buf Date: Wed, 29 Apr 2020 10:09:10 -0700 Message-Id: <20200429170914.30976-4-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429170914.30976-1-scott.branden@broadcom.com> References: <20200429170914.30976-1-scott.branden@broadcom.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add additional hooks to test_firmware to pass in support for partial file read using request_firmware_into_buf. buf_size: size of buffer to request firmware into partial: indicates that a partial file request is being made file_offset: to indicate offset into file to request Signed-off-by: Scott Branden --- lib/test_firmware.c | 146 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 136 insertions(+), 10 deletions(-) diff --git a/lib/test_firmware.c b/lib/test_firmware.c index 55176b0a8318..d1d2b48ed40e 100644 --- a/lib/test_firmware.c +++ b/lib/test_firmware.c @@ -50,6 +50,9 @@ struct test_batched_req { * @name: the name of the firmware file to look for * @into_buf: when the into_buf is used if this is true * request_firmware_into_buf() will be used instead. + * @buf_size: size of buf to allocate when into_buf is true + * @file_offset: file offset to request when calling request_firmware_into_buf + * @partial: partial read flag value when calling request_firmware_into_buf * @sync_direct: when the sync trigger is used if this is true * request_firmware_direct() will be used instead. * @send_uevent: whether or not to send a uevent for async requests @@ -89,6 +92,9 @@ struct test_batched_req { struct test_config { char *name; bool into_buf; + size_t buf_size; + size_t file_offset; + bool partial; bool sync_direct; bool send_uevent; u8 num_requests; @@ -183,6 +189,9 @@ static int __test_firmware_config_init(void) test_fw_config->num_requests = TEST_FIRMWARE_NUM_REQS; test_fw_config->send_uevent = true; test_fw_config->into_buf = false; + test_fw_config->buf_size = TEST_FIRMWARE_BUF_SIZE; + test_fw_config->file_offset = 0; + test_fw_config->partial = false; test_fw_config->sync_direct = false; test_fw_config->req_firmware = request_firmware; test_fw_config->test_result = 0; @@ -236,28 +245,35 @@ static ssize_t config_show(struct device *dev, dev_name(dev)); if (test_fw_config->name) - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, "name:\t%s\n", test_fw_config->name); else - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, "name:\tEMTPY\n"); - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, "num_requests:\t%u\n", test_fw_config->num_requests); - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, "send_uevent:\t\t%s\n", test_fw_config->send_uevent ? "FW_ACTION_HOTPLUG" : "FW_ACTION_NOHOTPLUG"); - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, "into_buf:\t\t%s\n", test_fw_config->into_buf ? "true" : "false"); - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, + "buf_size:\t%zu\n", test_fw_config->buf_size); + len += scnprintf(buf + len, PAGE_SIZE - len, + "file_offset:\t%zu\n", test_fw_config->file_offset); + len += scnprintf(buf + len, PAGE_SIZE - len, + "partial:\t\t%s\n", + test_fw_config->partial ? "true" : "false"); + len += scnprintf(buf + len, PAGE_SIZE - len, "sync_direct:\t\t%s\n", test_fw_config->sync_direct ? "true" : "false"); - len += scnprintf(buf+len, PAGE_SIZE - len, + len += scnprintf(buf + len, PAGE_SIZE - len, "read_fw_idx:\t%u\n", test_fw_config->read_fw_idx); mutex_unlock(&test_fw_mutex); @@ -315,6 +331,30 @@ static ssize_t test_dev_config_show_bool(char *buf, bool val) return snprintf(buf, PAGE_SIZE, "%d\n", val); } +static int test_dev_config_update_size_t(const char *buf, + size_t size, + size_t *cfg) +{ + int ret; + long new; + + ret = kstrtol(buf, 10, &new); + if (ret) + return ret; + + mutex_lock(&test_fw_mutex); + *(size_t *)cfg = new; + mutex_unlock(&test_fw_mutex); + + /* Always return full write size even if we didn't consume all */ + return size; +} + +static ssize_t test_dev_config_show_size_t(char *buf, size_t val) +{ + return snprintf(buf, PAGE_SIZE, "%zu\n", val); +} + static ssize_t test_dev_config_show_int(char *buf, int val) { return snprintf(buf, PAGE_SIZE, "%d\n", val); @@ -400,6 +440,83 @@ static ssize_t config_into_buf_show(struct device *dev, } static DEVICE_ATTR_RW(config_into_buf); +static ssize_t config_buf_size_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int rc; + + mutex_lock(&test_fw_mutex); + if (test_fw_config->reqs) { + pr_err("Must call release_all_firmware prior to changing config\n"); + rc = -EINVAL; + mutex_unlock(&test_fw_mutex); + goto out; + } + mutex_unlock(&test_fw_mutex); + + rc = test_dev_config_update_size_t(buf, count, + &test_fw_config->buf_size); + +out: + return rc; +} + +static ssize_t config_buf_size_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return test_dev_config_show_size_t(buf, test_fw_config->buf_size); +} +static DEVICE_ATTR_RW(config_buf_size); + +static ssize_t config_file_offset_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int rc; + + mutex_lock(&test_fw_mutex); + if (test_fw_config->reqs) { + pr_err("Must call release_all_firmware prior to changing config\n"); + rc = -EINVAL; + mutex_unlock(&test_fw_mutex); + goto out; + } + mutex_unlock(&test_fw_mutex); + + rc = test_dev_config_update_size_t(buf, count, + &test_fw_config->file_offset); + +out: + return rc; +} + +static ssize_t config_file_offset_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return test_dev_config_show_size_t(buf, test_fw_config->file_offset); +} +static DEVICE_ATTR_RW(config_file_offset); + +static ssize_t config_partial_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + return test_dev_config_update_bool(buf, + count, + &test_fw_config->partial); +} + +static ssize_t config_partial_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return test_dev_config_show_bool(buf, test_fw_config->partial); +} +static DEVICE_ATTR_RW(config_partial); + static ssize_t config_sync_direct_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -645,18 +762,24 @@ static int test_fw_run_batch_request(void *data) if (test_fw_config->into_buf) { void *test_buf; + unsigned int pread_flags; test_buf = kzalloc(TEST_FIRMWARE_BUF_SIZE, GFP_KERNEL); if (!test_buf) return -ENOSPC; + if (test_fw_config->partial) + pread_flags = KERNEL_PREAD_FLAG_PART; + else + pread_flags = KERNEL_PREAD_FLAG_WHOLE; + req->rc = request_firmware_into_buf(&req->fw, req->name, req->dev, test_buf, - TEST_FIRMWARE_BUF_SIZE, - 0, - KERNEL_PREAD_FLAG_WHOLE); + test_fw_config->buf_size, + test_fw_config->file_offset, + pread_flags); if (!req->fw) kfree(test_buf); } else { @@ -929,6 +1052,9 @@ static struct attribute *test_dev_attrs[] = { TEST_FW_DEV_ATTR(config_name), TEST_FW_DEV_ATTR(config_num_requests), TEST_FW_DEV_ATTR(config_into_buf), + TEST_FW_DEV_ATTR(config_buf_size), + TEST_FW_DEV_ATTR(config_file_offset), + TEST_FW_DEV_ATTR(config_partial), TEST_FW_DEV_ATTR(config_sync_direct), TEST_FW_DEV_ATTR(config_send_uevent), TEST_FW_DEV_ATTR(config_read_fw_idx), From patchwork Wed Apr 29 17:09:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11517961 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 05A53112C for ; 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Wed, 29 Apr 2020 10:09:44 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:43 -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 4/7] firmware: test partial file reads of request_firmware_into_buf Date: Wed, 29 Apr 2020 10:09:11 -0700 Message-Id: <20200429170914.30976-5-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429170914.30976-1-scott.branden@broadcom.com> References: <20200429170914.30976-1-scott.branden@broadcom.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add firmware tests for partial file reads of request_firmware_into_buf. Signed-off-by: Scott Branden --- .../selftests/firmware/fw_filesystem.sh | 80 +++++++++++++++++++ 1 file changed, 80 insertions(+) diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh index fcc281373b4d..38e89ba1b4d3 100755 --- a/tools/testing/selftests/firmware/fw_filesystem.sh +++ b/tools/testing/selftests/firmware/fw_filesystem.sh @@ -149,6 +149,26 @@ config_unset_into_buf() echo 0 > $DIR/config_into_buf } +config_set_buf_size() +{ + echo $1 > $DIR/config_buf_size +} + +config_set_file_offset() +{ + echo $1 > $DIR/config_file_offset +} + +config_set_partial() +{ + echo 1 > $DIR/config_partial +} + +config_unset_partial() +{ + echo 0 > $DIR/config_partial +} + config_set_sync_direct() { echo 1 > $DIR/config_sync_direct @@ -207,6 +227,35 @@ read_firmwares() done } +read_firmwares_partial() +{ + if [ "$(cat $DIR/config_into_buf)" == "1" ]; then + fwfile="${FW_INTO_BUF}" + else + fwfile="${FW}" + fi + + if [ "$1" = "xzonly" ]; then + fwfile="${fwfile}-orig" + fi + + # Strip fwfile down to match partial offset and length + partial_data="$(cat $fwfile)" + partial_data="${partial_data:$2:$3}" + + for i in $(seq 0 3); do + config_set_read_fw_idx $i + + read_firmware="$(cat $DIR/read_firmware)" + + # Verify the contents are what we expect. + if [ $read_firmware != $partial_data ]; then + echo "request #$i: partial firmware was not loaded" >&2 + exit 1 + fi + done +} + read_firmwares_expect_nofile() { for i in $(seq 0 3); do @@ -319,6 +368,21 @@ test_batched_request_firmware_into_buf() echo "OK" } +test_batched_request_firmware_into_buf_partial() +{ + echo -n "Batched request_firmware_into_buf_partial() $2 off=$3 size=$4 try #$1: " + config_reset + config_set_name $TEST_FIRMWARE_INTO_BUF_FILENAME + config_set_into_buf + config_set_partial + config_set_buf_size $4 + config_set_file_offset $3 + config_trigger_sync + read_firmwares_partial $2 $3 $4 + release_all_firmware + echo "OK" +} + test_batched_request_firmware_direct() { echo -n "Batched request_firmware_direct() $2 try #$1: " @@ -371,6 +435,22 @@ for i in $(seq 1 5); do test_batched_request_firmware_into_buf $i normal done +for i in $(seq 1 5); do + test_batched_request_firmware_into_buf_partial $i normal 0 10 +done + +for i in $(seq 1 5); do + test_batched_request_firmware_into_buf_partial $i normal 0 5 +done + +for i in $(seq 1 5); do + test_batched_request_firmware_into_buf_partial $i normal 1 6 +done + +for i in $(seq 1 5); do + test_batched_request_firmware_into_buf_partial $i normal 2 10 +done + for i in $(seq 1 5); do test_batched_request_firmware_direct $i normal done From patchwork Wed Apr 29 17:09:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11517957 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 521F415AB for ; Wed, 29 Apr 2020 17:09:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 366C42083B for ; 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Wed, 29 Apr 2020 10:09:47 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:46 -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 5/7] bcm-vk: add bcm_vk UAPI Date: Wed, 29 Apr 2020 10:09:12 -0700 Message-Id: <20200429170914.30976-6-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429170914.30976-1-scott.branden@broadcom.com> References: <20200429170914.30976-1-scott.branden@broadcom.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add user space api for bcm-vk driver. Signed-off-by: Scott Branden --- include/uapi/linux/misc/bcm_vk.h | 99 ++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 include/uapi/linux/misc/bcm_vk.h diff --git a/include/uapi/linux/misc/bcm_vk.h b/include/uapi/linux/misc/bcm_vk.h new file mode 100644 index 000000000000..783087b7c31f --- /dev/null +++ b/include/uapi/linux/misc/bcm_vk.h @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */ +/* + * Copyright 2018-2020 Broadcom. + */ + +#ifndef __UAPI_LINUX_MISC_BCM_VK_H +#define __UAPI_LINUX_MISC_BCM_VK_H + +#include +#include + +#define BCM_VK_MAX_FILENAME 64 + +struct vk_image { + __u32 type; /* Type of image */ +#define VK_IMAGE_TYPE_BOOT1 1 /* 1st stage (load to SRAM) */ +#define VK_IMAGE_TYPE_BOOT2 2 /* 2nd stage (load to DDR) */ + char filename[BCM_VK_MAX_FILENAME]; /* Filename of image */ +}; + +struct vk_reset { + __u32 arg1; + __u32 arg2; +}; + +#define VK_MAGIC 0x5e + +/* Load image to Valkyrie */ +#define VK_IOCTL_LOAD_IMAGE _IOW(VK_MAGIC, 0x2, struct vk_image) + +/* Send Reset to Valkyrie */ +#define VK_IOCTL_RESET _IOW(VK_MAGIC, 0x4, struct vk_reset) + +/* + * message block - basic unit in the message where a message's size is always + * N x sizeof(basic_block) + */ +struct vk_msg_blk { + __u8 function_id; +#define VK_FID_TRANS_BUF 5 +#define VK_FID_SHUTDOWN 8 + __u8 size; + __u16 trans_id; /* transport id, queue & msg_id */ + __u32 context_id; + __u32 args[2]; +#define VK_CMD_PLANES_MASK 0x000f /* number of planes to up/download */ +#define VK_CMD_UPLOAD 0x0400 /* memory transfer to vk */ +#define VK_CMD_DOWNLOAD 0x0500 /* memory transfer from vk */ +#define VK_CMD_MASK 0x0f00 /* command mask */ +}; + +#define VK_BAR_FWSTS 0x41c +#define VK_BAR_COP_FWSTS 0x428 +/* VK_FWSTS definitions */ +#define VK_FWSTS_RELOCATION_ENTRY BIT(0) +#define VK_FWSTS_RELOCATION_EXIT BIT(1) +#define VK_FWSTS_INIT_START BIT(2) +#define VK_FWSTS_ARCH_INIT_DONE BIT(3) +#define VK_FWSTS_PRE_KNL1_INIT_DONE BIT(4) +#define VK_FWSTS_PRE_KNL2_INIT_DONE BIT(5) +#define VK_FWSTS_POST_KNL_INIT_DONE BIT(6) +#define VK_FWSTS_INIT_DONE BIT(7) +#define VK_FWSTS_APP_INIT_START BIT(8) +#define VK_FWSTS_APP_INIT_DONE BIT(9) +#define VK_FWSTS_MASK 0xffffffff +#define VK_FWSTS_READY (VK_FWSTS_INIT_START | \ + VK_FWSTS_ARCH_INIT_DONE | \ + VK_FWSTS_PRE_KNL1_INIT_DONE | \ + VK_FWSTS_PRE_KNL2_INIT_DONE | \ + VK_FWSTS_POST_KNL_INIT_DONE | \ + VK_FWSTS_INIT_DONE | \ + VK_FWSTS_APP_INIT_START | \ + VK_FWSTS_APP_INIT_DONE) +/* Deinit */ +#define VK_FWSTS_APP_DEINIT_START BIT(23) +#define VK_FWSTS_APP_DEINIT_DONE BIT(24) +#define VK_FWSTS_DRV_DEINIT_START BIT(25) +#define VK_FWSTS_DRV_DEINIT_DONE BIT(26) +#define VK_FWSTS_RESET_DONE BIT(27) +#define VK_FWSTS_DEINIT_TRIGGERED (VK_FWSTS_APP_DEINIT_START | \ + VK_FWSTS_APP_DEINIT_DONE | \ + VK_FWSTS_DRV_DEINIT_START | \ + VK_FWSTS_DRV_DEINIT_DONE) +/* Last nibble for reboot reason */ +#define VK_FWSTS_RESET_REASON_SHIFT 28 +#define VK_FWSTS_RESET_REASON_MASK (0xf << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_SYS_PWRUP (0x0 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_MBOX_DB (0x1 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_M7_WDOG (0x2 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_TEMP (0x3 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_PCI_FLR (0x4 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_PCI_HOT (0x5 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_PCI_WARM (0x6 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_PCI_COLD (0x7 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_L1 (0x8 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_L0 (0x9 << VK_FWSTS_RESET_REASON_SHIFT) +#define VK_FWSTS_RESET_UNKNOWN (0xf << VK_FWSTS_RESET_REASON_SHIFT) + +#endif /* __UAPI_LINUX_MISC_BCM_VK_H */ From patchwork Wed Apr 29 17:09:14 2020 Content-Type: text/plain; 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Wed, 29 Apr 2020 10:09:57 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id y63sm1574456pfg.138.2020.04.29.10.09.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:09:56 -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 7/7] MAINTAINERS: bcm-vk: add maintainer for Broadcom VK Driver Date: Wed, 29 Apr 2020 10:09:14 -0700 Message-Id: <20200429170914.30976-8-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429170914.30976-1-scott.branden@broadcom.com> References: <20200429170914.30976-1-scott.branden@broadcom.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add maintainer entry for new Broadcom VK Driver Signed-off-by: Scott Branden --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index c1175fc0aadb..cbc132a9b766 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3613,6 +3613,13 @@ L: netdev@vger.kernel.org S: Supported F: drivers/net/ethernet/broadcom/tg3.* +BROADCOM VK DRIVER +M: Scott Branden +L: bcm-kernel-feedback-list@broadcom.com +S: Supported +F: drivers/misc/bcm-vk/ +F: include/uapi/linux/misc/bcm_vk.h + BROCADE BFA FC SCSI DRIVER M: Anil Gurumurthy M: Sudarsana Kalluru