646 lines
18 KiB
C
646 lines
18 KiB
C
/*
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* BSD host USB redirector
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*
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* Copyright (c) 2006 Lonnie Mendez
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* Portions of code and concepts borrowed from
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* usb-linux.c and libusb's bsd.c and are copyright their respective owners.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h"
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#include "monitor/monitor.h"
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#include "hw/usb.h"
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/* usb.h declares these */
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#undef USB_SPEED_HIGH
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#undef USB_SPEED_FULL
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#undef USB_SPEED_LOW
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#include <sys/ioctl.h>
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#ifndef __DragonFly__
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#include <dev/usb/usb.h>
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#else
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#include <bus/usb/usb.h>
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#endif
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/* This value has maximum potential at 16.
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* You should also set hw.usb.debug to gain
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* more detailed view.
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*/
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//#define DEBUG
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#define UGEN_DEBUG_LEVEL 0
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typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
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int vendor_id, int product_id,
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const char *product_name, int speed);
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static int usb_host_find_device(int *pbus_num, int *paddr,
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const char *devname);
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typedef struct USBHostDevice {
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USBDevice dev;
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int ep_fd[USB_MAX_ENDPOINTS];
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int devfd;
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char devpath[32];
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} USBHostDevice;
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static int ensure_ep_open(USBHostDevice *dev, int ep, int mode)
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{
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char buf[32];
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int fd;
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/* Get the address for this endpoint */
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ep = UE_GET_ADDR(ep);
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if (dev->ep_fd[ep] < 0) {
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#if defined(__FreeBSD__) || defined(__DragonFly__)
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snprintf(buf, sizeof(buf) - 1, "%s.%d", dev->devpath, ep);
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#else
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snprintf(buf, sizeof(buf) - 1, "%s.%02d", dev->devpath, ep);
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#endif
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/* Try to open it O_RDWR first for those devices which have in and out
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* endpoints with the same address (eg 0x02 and 0x82)
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*/
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fd = open(buf, O_RDWR);
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if (fd < 0 && errno == ENXIO)
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fd = open(buf, mode);
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if (fd < 0) {
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#ifdef DEBUG
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printf("ensure_ep_open: failed to open device endpoint %s: %s\n",
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buf, strerror(errno));
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#endif
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}
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dev->ep_fd[ep] = fd;
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}
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return dev->ep_fd[ep];
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}
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static void ensure_eps_closed(USBHostDevice *dev)
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{
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int epnum = 1;
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if (!dev)
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return;
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while (epnum < USB_MAX_ENDPOINTS) {
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if (dev->ep_fd[epnum] >= 0) {
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close(dev->ep_fd[epnum]);
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dev->ep_fd[epnum] = -1;
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}
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epnum++;
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}
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}
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static void usb_host_handle_reset(USBDevice *dev)
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{
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#if 0
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USBHostDevice *s = (USBHostDevice *)dev;
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#endif
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}
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/* XXX:
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* -check device states against transfer requests
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* and return appropriate response
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*/
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static void usb_host_handle_control(USBDevice *dev,
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USBPacket *p,
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int request,
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int value,
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int index,
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int length,
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uint8_t *data)
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{
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USBHostDevice *s = (USBHostDevice *)dev;
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struct usb_ctl_request req;
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struct usb_alt_interface aiface;
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int ret, timeout = 50;
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if ((request >> 8) == UT_WRITE_DEVICE &&
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(request & 0xff) == UR_SET_ADDRESS) {
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/* specific SET_ADDRESS support */
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dev->addr = value;
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} else if ((request >> 8) == UT_WRITE_DEVICE &&
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(request & 0xff) == UR_SET_CONFIG) {
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ensure_eps_closed(s); /* can't do this without all eps closed */
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ret = ioctl(s->devfd, USB_SET_CONFIG, &value);
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if (ret < 0) {
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#ifdef DEBUG
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printf("handle_control: failed to set configuration - %s\n",
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strerror(errno));
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#endif
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p->status = USB_RET_STALL;
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}
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} else if ((request >> 8) == UT_WRITE_INTERFACE &&
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(request & 0xff) == UR_SET_INTERFACE) {
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aiface.uai_interface_index = index;
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aiface.uai_alt_no = value;
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ensure_eps_closed(s); /* can't do this without all eps closed */
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ret = ioctl(s->devfd, USB_SET_ALTINTERFACE, &aiface);
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if (ret < 0) {
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#ifdef DEBUG
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printf("handle_control: failed to set alternate interface - %s\n",
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strerror(errno));
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#endif
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p->status = USB_RET_STALL;
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}
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} else {
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req.ucr_request.bmRequestType = request >> 8;
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req.ucr_request.bRequest = request & 0xff;
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USETW(req.ucr_request.wValue, value);
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USETW(req.ucr_request.wIndex, index);
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USETW(req.ucr_request.wLength, length);
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req.ucr_data = data;
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req.ucr_flags = USBD_SHORT_XFER_OK;
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ret = ioctl(s->devfd, USB_SET_TIMEOUT, &timeout);
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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if (ret < 0 && errno != EINVAL) {
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#else
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if (ret < 0) {
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#endif
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#ifdef DEBUG
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printf("handle_control: setting timeout failed - %s\n",
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strerror(errno));
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#endif
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}
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ret = ioctl(s->devfd, USB_DO_REQUEST, &req);
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/* ugen returns EIO for usbd_do_request_ no matter what
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* happens with the transfer */
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if (ret < 0) {
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#ifdef DEBUG
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printf("handle_control: error after request - %s\n",
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strerror(errno));
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#endif
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p->status = USB_RET_NAK; /* STALL */
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} else {
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p->actual_length = req.ucr_actlen;
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}
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}
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}
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static void usb_host_handle_data(USBDevice *dev, USBPacket *p)
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{
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USBHostDevice *s = (USBHostDevice *)dev;
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int ret, fd, mode;
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int one = 1, shortpacket = 0, timeout = 50;
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sigset_t new_mask, old_mask;
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uint8_t devep = p->ep->nr;
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/* protect data transfers from SIGALRM signal */
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sigemptyset(&new_mask);
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sigaddset(&new_mask, SIGALRM);
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sigprocmask(SIG_BLOCK, &new_mask, &old_mask);
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if (p->pid == USB_TOKEN_IN) {
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devep |= 0x80;
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mode = O_RDONLY;
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shortpacket = 1;
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} else {
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mode = O_WRONLY;
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}
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fd = ensure_ep_open(s, devep, mode);
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if (fd < 0) {
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sigprocmask(SIG_SETMASK, &old_mask, NULL);
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p->status = USB_RET_NODEV;
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return;
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}
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if (ioctl(fd, USB_SET_TIMEOUT, &timeout) < 0) {
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#ifdef DEBUG
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printf("handle_data: failed to set timeout - %s\n",
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strerror(errno));
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#endif
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}
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if (shortpacket) {
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if (ioctl(fd, USB_SET_SHORT_XFER, &one) < 0) {
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#ifdef DEBUG
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printf("handle_data: failed to set short xfer mode - %s\n",
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strerror(errno));
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#endif
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sigprocmask(SIG_SETMASK, &old_mask, NULL);
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}
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}
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if (p->pid == USB_TOKEN_IN)
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ret = readv(fd, p->iov.iov, p->iov.niov);
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else
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ret = writev(fd, p->iov.iov, p->iov.niov);
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sigprocmask(SIG_SETMASK, &old_mask, NULL);
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if (ret < 0) {
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#ifdef DEBUG
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printf("handle_data: error after %s data - %s\n",
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pid == USB_TOKEN_IN ? "reading" : "writing", strerror(errno));
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#endif
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switch(errno) {
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case ETIMEDOUT:
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case EINTR:
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p->status = USB_RET_NAK;
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break;
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default:
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p->status = USB_RET_STALL;
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}
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} else {
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p->actual_length = ret;
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}
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}
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static void usb_host_handle_destroy(USBDevice *opaque)
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{
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USBHostDevice *s = (USBHostDevice *)opaque;
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int i;
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for (i = 0; i < USB_MAX_ENDPOINTS; i++)
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if (s->ep_fd[i] >= 0)
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close(s->ep_fd[i]);
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if (s->devfd < 0)
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return;
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close(s->devfd);
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g_free(s);
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}
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static int usb_host_initfn(USBDevice *dev)
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{
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dev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
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return 0;
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}
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USBDevice *usb_host_device_open(USBBus *guest_bus, const char *devname)
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{
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struct usb_device_info bus_info, dev_info;
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USBDevice *d = NULL, *ret = NULL;
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USBHostDevice *dev;
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char ctlpath[PATH_MAX + 1];
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char buspath[PATH_MAX + 1];
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int bfd, dfd, bus, address, i;
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int ugendebug = UGEN_DEBUG_LEVEL;
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if (usb_host_find_device(&bus, &address, devname) < 0) {
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goto fail;
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}
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snprintf(buspath, PATH_MAX, "/dev/usb%d", bus);
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bfd = open(buspath, O_RDWR);
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if (bfd < 0) {
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#ifdef DEBUG
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printf("usb_host_device_open: failed to open usb bus - %s\n",
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strerror(errno));
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#endif
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goto fail;
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}
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bus_info.udi_addr = address;
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if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0) {
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#ifdef DEBUG
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printf("usb_host_device_open: failed to grab bus information - %s\n",
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strerror(errno));
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#endif
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goto fail_bfd;
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}
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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snprintf(ctlpath, PATH_MAX, "/dev/%s", bus_info.udi_devnames[0]);
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#else
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snprintf(ctlpath, PATH_MAX, "/dev/%s.00", bus_info.udi_devnames[0]);
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#endif
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dfd = open(ctlpath, O_RDWR);
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if (dfd < 0) {
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dfd = open(ctlpath, O_RDONLY);
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if (dfd < 0) {
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#ifdef DEBUG
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printf("usb_host_device_open: failed to open usb device %s - %s\n",
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ctlpath, strerror(errno));
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#endif
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}
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goto fail_dfd;
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}
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if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0) {
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#ifdef DEBUG
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printf("usb_host_device_open: failed to grab device info - %s\n",
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strerror(errno));
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#endif
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goto fail_dfd;
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}
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d = usb_create(guest_bus, "usb-host");
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dev = DO_UPCAST(USBHostDevice, dev, d);
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if (dev_info.udi_speed == 1) {
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dev->dev.speed = USB_SPEED_LOW - 1;
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dev->dev.speedmask = USB_SPEED_MASK_LOW;
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} else {
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dev->dev.speed = USB_SPEED_FULL - 1;
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dev->dev.speedmask = USB_SPEED_MASK_FULL;
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}
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if (strncmp(dev_info.udi_product, "product", 7) != 0) {
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pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
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dev_info.udi_product);
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} else {
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snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
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"host:%s", devname);
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}
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pstrcpy(dev->devpath, sizeof(dev->devpath), "/dev/");
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pstrcat(dev->devpath, sizeof(dev->devpath), dev_info.udi_devnames[0]);
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/* Mark the endpoints as not yet open */
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for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
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dev->ep_fd[i] = -1;
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}
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ioctl(dfd, USB_SETDEBUG, &ugendebug);
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ret = (USBDevice *)dev;
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fail_dfd:
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close(dfd);
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fail_bfd:
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close(bfd);
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fail:
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return ret;
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}
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static void usb_host_class_initfn(ObjectClass *klass, void *data)
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{
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USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
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uc->product_desc = "USB Host Device";
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uc->init = usb_host_initfn;
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uc->handle_reset = usb_host_handle_reset;
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uc->handle_control = usb_host_handle_control;
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uc->handle_data = usb_host_handle_data;
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uc->handle_destroy = usb_host_handle_destroy;
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}
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static TypeInfo usb_host_dev_info = {
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.name = "usb-host",
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.parent = TYPE_USB_DEVICE,
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.instance_size = sizeof(USBHostDevice),
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.class_init = usb_host_class_initfn,
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};
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static void usb_host_register_types(void)
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{
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type_register_static(&usb_host_dev_info);
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}
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type_init(usb_host_register_types)
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static int usb_host_scan(void *opaque, USBScanFunc *func)
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{
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struct usb_device_info bus_info;
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struct usb_device_info dev_info;
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uint16_t vendor_id, product_id, class_id, speed;
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int bfd, dfd, bus, address;
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char busbuf[20], devbuf[20], product_name[256];
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int ret = 0;
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for (bus = 0; bus < 10; bus++) {
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snprintf(busbuf, sizeof(busbuf) - 1, "/dev/usb%d", bus);
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bfd = open(busbuf, O_RDWR);
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if (bfd < 0)
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continue;
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for (address = 1; address < 127; address++) {
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bus_info.udi_addr = address;
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if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0)
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continue;
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/* only list devices that can be used by generic layer */
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if (strncmp(bus_info.udi_devnames[0], "ugen", 4) != 0)
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continue;
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s", bus_info.udi_devnames[0]);
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#else
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snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s.00", bus_info.udi_devnames[0]);
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#endif
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dfd = open(devbuf, O_RDONLY);
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if (dfd < 0) {
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#ifdef DEBUG
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printf("usb_host_scan: couldn't open device %s - %s\n", devbuf,
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strerror(errno));
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#endif
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continue;
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}
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if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0)
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printf("usb_host_scan: couldn't get device information for %s - %s\n",
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devbuf, strerror(errno));
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/* XXX: might need to fixup endianness of word values before copying over */
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vendor_id = dev_info.udi_vendorNo;
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product_id = dev_info.udi_productNo;
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class_id = dev_info.udi_class;
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speed = dev_info.udi_speed;
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if (strncmp(dev_info.udi_product, "product", 7) != 0)
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pstrcpy(product_name, sizeof(product_name),
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dev_info.udi_product);
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else
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product_name[0] = '\0';
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ret = func(opaque, bus, address, class_id, vendor_id,
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product_id, product_name, speed);
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close(dfd);
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if (ret)
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goto the_end;
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}
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close(bfd);
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}
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the_end:
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return ret;
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}
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typedef struct FindDeviceState {
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int vendor_id;
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int product_id;
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int bus_num;
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int addr;
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} FindDeviceState;
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static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
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int class_id,
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int vendor_id, int product_id,
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const char *product_name, int speed)
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{
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FindDeviceState *s = opaque;
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if (vendor_id == s->vendor_id &&
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product_id == s->product_id) {
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s->bus_num = bus_num;
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s->addr = addr;
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return 1;
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} else {
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return 0;
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}
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}
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/* the syntax is :
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'bus.addr' (decimal numbers) or
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'vendor_id:product_id' (hexa numbers) */
|
|
static int usb_host_find_device(int *pbus_num, int *paddr,
|
|
const char *devname)
|
|
{
|
|
const char *p;
|
|
int ret;
|
|
FindDeviceState fs;
|
|
|
|
p = strchr(devname, '.');
|
|
if (p) {
|
|
*pbus_num = strtoul(devname, NULL, 0);
|
|
*paddr = strtoul(p + 1, NULL, 0);
|
|
return 0;
|
|
}
|
|
p = strchr(devname, ':');
|
|
if (p) {
|
|
fs.vendor_id = strtoul(devname, NULL, 16);
|
|
fs.product_id = strtoul(p + 1, NULL, 16);
|
|
ret = usb_host_scan(&fs, usb_host_find_device_scan);
|
|
if (ret) {
|
|
*pbus_num = fs.bus_num;
|
|
*paddr = fs.addr;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**********************/
|
|
/* USB host device info */
|
|
|
|
struct usb_class_info {
|
|
int class;
|
|
const char *class_name;
|
|
};
|
|
|
|
static const struct usb_class_info usb_class_info[] = {
|
|
{ USB_CLASS_AUDIO, "Audio"},
|
|
{ USB_CLASS_COMM, "Communication"},
|
|
{ USB_CLASS_HID, "HID"},
|
|
{ USB_CLASS_HUB, "Hub" },
|
|
{ USB_CLASS_PHYSICAL, "Physical" },
|
|
{ USB_CLASS_PRINTER, "Printer" },
|
|
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
|
{ USB_CLASS_CDC_DATA, "Data" },
|
|
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
|
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
|
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
|
{ USB_CLASS_CSCID, "Smart Card" },
|
|
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
|
{ -1, NULL }
|
|
};
|
|
|
|
static const char *usb_class_str(uint8_t class)
|
|
{
|
|
const struct usb_class_info *p;
|
|
for (p = usb_class_info; p->class != -1; p++) {
|
|
if (p->class == class)
|
|
break;
|
|
}
|
|
return p->class_name;
|
|
}
|
|
|
|
static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id,
|
|
int vendor_id, int product_id,
|
|
const char *product_name,
|
|
int speed)
|
|
{
|
|
const char *class_str, *speed_str;
|
|
|
|
switch(speed) {
|
|
case USB_SPEED_LOW:
|
|
speed_str = "1.5";
|
|
break;
|
|
case USB_SPEED_FULL:
|
|
speed_str = "12";
|
|
break;
|
|
case USB_SPEED_HIGH:
|
|
speed_str = "480";
|
|
break;
|
|
default:
|
|
speed_str = "?";
|
|
break;
|
|
}
|
|
|
|
monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
|
|
bus_num, addr, speed_str);
|
|
class_str = usb_class_str(class_id);
|
|
if (class_str)
|
|
monitor_printf(mon, " %s:", class_str);
|
|
else
|
|
monitor_printf(mon, " Class %02x:", class_id);
|
|
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
|
if (product_name[0] != '\0')
|
|
monitor_printf(mon, ", %s", product_name);
|
|
monitor_printf(mon, "\n");
|
|
}
|
|
|
|
static int usb_host_info_device(void *opaque,
|
|
int bus_num, int addr,
|
|
int class_id,
|
|
int vendor_id, int product_id,
|
|
const char *product_name,
|
|
int speed)
|
|
{
|
|
Monitor *mon = opaque;
|
|
|
|
usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
|
|
product_name, speed);
|
|
return 0;
|
|
}
|
|
|
|
void usb_host_info(Monitor *mon)
|
|
{
|
|
usb_host_scan(mon, usb_host_info_device);
|
|
}
|
|
|
|
/* XXX add this */
|
|
int usb_host_device_close(const char *devname)
|
|
{
|
|
return 0;
|
|
}
|