a37c0c4cba
These Microsoft-only descriptors help in loading the correct driver on Windows. They are especially helpful to give libusb access to a custom device without having to manually configure/install WinUSB driver. With this change DFU interface works automatically on Windows 10 with dfu-util 0.9 and libusb 1.0.22. On Windows 7 it still appears to need driver installation.
527 lines
16 KiB
C
527 lines
16 KiB
C
/****************************************************************************
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* drivers/usbdev/dfu.c
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*
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* Copyright (C) 2011-2018 Gregory Nutt. All rights reserved.
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* Authors: Petteri Aimonen <jpa@git.mail.kapsi.fi>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/* This is a driver for the USB Device Firmware Upgrade protocol v1.1.
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* Currently it supports the app-side ("Run-Time") part of the protocol:
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* a sequence of DFU_DETACH and USB reset commands, which will reboot into
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* a separate USB DFU bootloader.
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*
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* The bootloader is provided by board-specific logic, or STM32's
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* built-in ROM bootloader can be used.
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*
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* https://www.usb.org/sites/default/files/DFU_1.1.pdf
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/usb/usb.h>
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#include <nuttx/usb/usbdev.h>
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#include <nuttx/usb/usbdev_trace.h>
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#include <nuttx/usb/dfu.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/wqueue.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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/****************************************************************************
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* Pre-processor definitions
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****************************************************************************/
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#define DFU_MAX_TIMEOUT 255
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#define DFU_MAX_TRANSFER 2048
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#define DFU_VERSION 0x011A
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#define USB_REQ_DFU_DETACH 0
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#define USB_REQ_DFU_GETSTATUS 3
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#ifdef CONFIG_DFU_MSFT_OS_DESCRIPTORS
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#define DFU_MAX_DESCRIPTOR_LEN 256
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#else
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#define DFU_MAX_DESCRIPTOR_LEN sizeof(struct dfu_cfgdesc_s)
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* Response to DFU_GETSTATUS */
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struct dfu_getstatus_response_s
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{
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uint8_t status; /* Status of latest command */
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uint8_t poll_timeout[3]; /* Time until next GETSTATUS request */
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uint8_t state; /* Current state of the device */
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uint8_t string_idx; /* Optional string description */
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};
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/* DFU functional descriptor */
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struct dfu_funcdesc_s
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{
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uint8_t len; /* Descriptor length */
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uint8_t type; /* 0x21 = DFU FUNCTIONAL */
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uint8_t attributes; /* Bit mask of supported features */
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uint8_t detach_timeout[2]; /* Maximum time in milliseconds between DFU_DETACH and USB reset */
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uint8_t transfer_size[2]; /* Maximum number of bytes in control writes */
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uint8_t dfu_version[2]; /* Version of DFU specification supported */
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};
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/* USB configuration descriptor */
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struct dfu_cfgdesc_s
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{
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struct usb_ifdesc_s ifdesc; /* DFU interface descriptor */
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struct dfu_funcdesc_s funcdesc; /* DFU functional descriptor */
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};
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struct dfu_driver_s
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{
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struct usbdevclass_driver_s drvr;
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struct usbdev_devinfo_s devinfo;
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FAR struct usbdev_req_s *ctrlreq; /* Pointer to preallocated control request */
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struct work_s work_item; /* Work queue entry for activating bootloader */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* usbclass callbacks */
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static int usbclass_setup(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev,
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FAR const struct usb_ctrlreq_s *ctrl,
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FAR uint8_t *dataout, size_t outlen);
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static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev);
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static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev);
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static void usbclass_disconnect(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* USB driver operations */
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const static struct usbdevclass_driverops_s g_dfu_driverops =
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{
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&usbclass_bind,
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&usbclass_unbind,
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&usbclass_setup,
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&usbclass_disconnect,
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NULL,
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NULL
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};
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static const struct dfu_cfgdesc_s g_dfu_cfgdesc =
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{
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{
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.len = USB_SIZEOF_IFDESC,
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.type = USB_DESC_TYPE_INTERFACE,
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.ifno = 0,
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.alt = 0,
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.neps = 0,
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.classid = 0xFE,
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.subclass = 0x01,
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.protocol = 0x01, /* DFU runtime protocol */
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.iif = 0
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},
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{
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.len = sizeof(struct dfu_funcdesc_s),
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.type = 0x21,
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.attributes = 0x0B,
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.detach_timeout = { LSBYTE(DFU_MAX_TIMEOUT), MSBYTE(DFU_MAX_TIMEOUT) },
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.transfer_size = { LSBYTE(DFU_MAX_TRANSFER), MSBYTE(DFU_MAX_TRANSFER) },
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.dfu_version = { LSBYTE(DFU_VERSION), MSBYTE(DFU_VERSION) }
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}
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: usbclass_freereq
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*
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* Description:
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* Free a request instance along with its buffer
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*
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****************************************************************************/
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static void usbclass_freereq(FAR struct usbdev_ep_s *ep,
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FAR struct usbdev_req_s *req)
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{
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if (ep != NULL && req != NULL)
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{
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if (req->buf != NULL)
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{
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EP_FREEBUFFER(ep, req->buf);
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}
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EP_FREEREQ(ep, req);
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}
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}
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/****************************************************************************
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* Name: usbclass_allocreq
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*
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* Description:
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* Allocate a request instance along with its buffer
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*
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****************************************************************************/
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static FAR struct usbdev_req_s *usbclass_allocreq(FAR struct usbdev_ep_s *ep,
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uint16_t len)
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{
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FAR struct usbdev_req_s *req;
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req = EP_ALLOCREQ(ep);
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if (req != NULL)
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{
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req->len = len;
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req->buf = EP_ALLOCBUFFER(ep, len);
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if (req->buf == NULL)
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{
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EP_FREEREQ(ep, req);
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req = NULL;
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}
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}
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return req;
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}
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static void usbclass_ep0incomplete(FAR struct usbdev_ep_s *ep,
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FAR struct usbdev_req_s *req)
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{
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}
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static int16_t usbclass_mkcfgdesc(FAR uint8_t *buf,
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FAR struct usbdev_devinfo_s *devinfo)
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{
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FAR struct dfu_cfgdesc_s *dest = (FAR struct dfu_cfgdesc_s*)buf;
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*dest = g_dfu_cfgdesc;
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dest->ifdesc.ifno += devinfo->ifnobase;
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dest->ifdesc.iif = devinfo->strbase;
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return sizeof(g_dfu_cfgdesc);
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}
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static int convert_to_utf16(FAR uint8_t *dest, FAR const char *src)
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{
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int bytes = 0;
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while (*src)
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{
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*dest++ = *src++;
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*dest++ = 0x00;
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bytes += 2;
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}
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return bytes;
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}
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static int usbclass_mkstrdesc(uint8_t id, FAR struct usb_strdesc_s *strdesc)
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{
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FAR const char *str;
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if (id == 0)
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{
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str = CONFIG_DFU_INTERFACE_NAME;
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}
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else
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{
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return -EINVAL;
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}
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strdesc->len = 2 + convert_to_utf16(strdesc->data, str);
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strdesc->type = USB_DESC_TYPE_STRING;
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return strdesc->len;
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}
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#ifdef CONFIG_DFU_MSFT_OS_DESCRIPTORS
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static int dfu_make_msft_extprop_desc(FAR uint8_t *buf)
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{
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FAR const char *propname = "DeviceInterfaceGUIDs";
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FAR const char *propval = CONFIG_DFU_INTERFACE_GUID;
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FAR struct usb_msft_os_extprop_hdr_s *hdr = (FAR struct usb_msft_os_extprop_hdr_s*)buf;
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FAR uint8_t *payload = buf + sizeof(struct usb_msft_os_extprop_hdr_s);
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int namelen, valuelen, proplen, totallen;
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namelen = strlen(propname) * 2 + 2;
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valuelen = strlen(propval) * 2 + 4;
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proplen = 14 + namelen + valuelen;
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totallen = sizeof(struct usb_msft_os_extprop_hdr_s) + proplen;
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memset(buf, 0, totallen);
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hdr->len[0] = LSBYTE(totallen);
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hdr->len[1] = MSBYTE(totallen);
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hdr->version[1] = 0x01;
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hdr->index[0] = MSFTOSDESC_INDEX_EXTPROP;
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hdr->count[0] = 1;
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*payload++ = LSBYTE(proplen); // dwSize
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*payload++ = MSBYTE(proplen);
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*payload++ = 0;
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*payload++ = 0;
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*payload++ = 7; // dwPropertyDataType = REG_MULTI_SZ
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*payload++ = 0;
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*payload++ = 0;
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*payload++ = 0;
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*payload++ = LSBYTE(namelen); // wPropertyNameLength
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*payload++ = MSBYTE(namelen);
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payload += convert_to_utf16(payload, propname); // bPropertyName
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*payload++ = 0; // Null terminator
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*payload++ = 0;
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*payload++= LSBYTE(valuelen); // dwPropertyDataLength
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*payload++= MSBYTE(valuelen);
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*payload++ = 0;
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*payload++ = 0;
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payload += convert_to_utf16(payload, propval);
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*payload++ = 0; // Null terminator for string
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*payload++ = 0;
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*payload++ = 0; // Null terminator for array
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*payload++ = 0;
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return totallen;
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}
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#endif
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static void dfu_workqueue_callback(void *arg)
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{
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usbdev_dfu_activate_bootloader();
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}
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static int usbclass_setup(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev,
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FAR const struct usb_ctrlreq_s *ctrl,
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FAR uint8_t *dataout, size_t outlen)
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{
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FAR struct dfu_driver_s *priv = (FAR struct dfu_driver_s *)driver;
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FAR struct usbdev_req_s *ctrlreq = priv->ctrlreq;
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uint16_t value;
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uint16_t len;
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int ret = -EOPNOTSUPP;
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value = GETUINT16(ctrl->value);
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len = GETUINT16(ctrl->len);
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usbtrace(TRACE_CLASSSETUP, ctrl->req);
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uinfo("type=%02x req=%02x value=%04x len=%04x\n",
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ctrl->type, ctrl->req, value, len);
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if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
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{
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if (ctrl->req == USB_REQ_GETDESCRIPTOR)
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{
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if (ctrl->value[1] == USB_DESC_TYPE_CONFIG)
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{
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ret = usbclass_mkcfgdesc(ctrlreq->buf, &priv->devinfo);
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}
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else if (ctrl->value[1] == USB_DESC_TYPE_STRING)
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{
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ret = usbclass_mkstrdesc(ctrl->value[0], (struct usb_strdesc_s *)ctrlreq->buf);
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}
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}
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else if (ctrl->req == USB_REQ_SETCONFIGURATION)
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{
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return 0; // Composite driver will send the reply
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}
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else if (ctrl->req == USB_REQ_SETINTERFACE)
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{
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// Only one alternate setting (0) is supported
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if (value == 0)
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{
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ret = 0;
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}
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}
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else if (ctrl->req == USB_REQ_GETINTERFACE)
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{
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*(FAR uint8_t *) ctrlreq->buf = 0;
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ret = 1;
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}
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}
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else if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_CLASS)
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{
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if (ctrl->req == USB_REQ_DFU_DETACH)
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{
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// Execute the bootloader activation through work queue, so that we can send
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// the USB reply packet first.
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work_queue(HPWORK, &priv->work_item, dfu_workqueue_callback, NULL, 1);
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ret = 0;
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}
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else if (ctrl->req == USB_REQ_DFU_GETSTATUS)
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{
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/* Respond with APP_IDLE status */
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FAR struct dfu_getstatus_response_s *response = (FAR struct dfu_getstatus_response_s*)ctrlreq->buf;
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memset(response, 0, sizeof(struct dfu_getstatus_response_s));
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ret = sizeof(struct dfu_getstatus_response_s);
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}
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}
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#ifdef CONFIG_DFU_MSFT_OS_DESCRIPTORS
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else if (ctrl->req == USB_REQ_GETMSFTOSDESCRIPTOR)
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{
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ret = dfu_make_msft_extprop_desc(ctrlreq->buf);
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}
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#endif
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/* Respond to the setup command if data was returned. On an error return
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* value (ret < 0), the USB driver will stall.
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*/
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if (ret >= 0)
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{
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ctrlreq->len = (len < ret) ? len : ret;
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ctrlreq->flags = USBDEV_REQFLAGS_NULLPKT;
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ret = composite_ep0submit(driver, dev, ctrlreq);
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if (ret < 0)
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{
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usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPRESPQ), (uint16_t)-ret);
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ctrlreq->result = OK;
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}
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}
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return ret;
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}
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static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev)
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{
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FAR struct dfu_driver_s *priv = (FAR struct dfu_driver_s *)driver;
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priv->ctrlreq = usbclass_allocreq(dev->ep0, DFU_MAX_DESCRIPTOR_LEN);
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if (priv->ctrlreq == NULL)
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{
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usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_ALLOCCTRLREQ), 0);
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return -ENOMEM;
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}
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priv->ctrlreq->callback = usbclass_ep0incomplete;
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return OK;
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}
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static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev)
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{
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FAR struct dfu_driver_s *priv = (FAR struct dfu_driver_s *)driver;
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if (priv->ctrlreq != NULL)
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{
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usbclass_freereq(dev->ep0, priv->ctrlreq);
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priv->ctrlreq = NULL;
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}
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}
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static void usbclass_disconnect(FAR struct usbdevclass_driver_s *driver,
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FAR struct usbdev_s *dev)
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{
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}
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/****************************************************************************
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* Name: usbclass_classobject
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*
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* Description:
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* Allocate memory for the RNDIS driver class object
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*
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* Returned Value:
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* 0 on success, negative error code on failure.
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*
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****************************************************************************/
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static int usbclass_classobject(int minor,
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FAR struct usbdev_devinfo_s *devinfo,
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FAR struct usbdevclass_driver_s **classdev)
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{
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FAR struct dfu_driver_s *alloc;
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alloc = kmm_zalloc(sizeof(struct dfu_driver_s));
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if (!alloc)
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{
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return -ENOMEM;
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}
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*classdev = &alloc->drvr;
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alloc->drvr.speed = USB_SPEED_FULL;
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alloc->drvr.ops = &g_dfu_driverops;
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return OK;
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}
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/****************************************************************************
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* Name: usbclass_uninitialize
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*
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* Description:
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* Free allocated memory
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*
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* Returned Value:
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* 0 on success, negative error code on failure.
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*
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****************************************************************************/
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static void usbclass_uninitialize(FAR struct usbdevclass_driver_s *classdev)
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{
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kmm_free(classdev);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void usbdev_dfu_get_composite_devdesc(struct composite_devdesc_s *dev)
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{
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memset(dev, 0, sizeof(struct composite_devdesc_s));
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dev->mkconfdesc = usbclass_mkcfgdesc;
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dev->mkstrdesc = usbclass_mkstrdesc;
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dev->classobject = usbclass_classobject;
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dev->uninitialize = usbclass_uninitialize;
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dev->nconfigs = 1;
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dev->configid = 0;
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dev->cfgdescsize = sizeof(g_dfu_cfgdesc);
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dev->devinfo.ninterfaces = 1;
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dev->devinfo.nstrings = 1;
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dev->devinfo.nendpoints = 0;
|
|
|
|
#ifdef CONFIG_DFU_MSFT_OS_DESCRIPTORS
|
|
memcpy(dev->msft_compatible_id, "WINUSB", 6);
|
|
#endif
|
|
}
|
|
|
|
|