1900 lines
52 KiB
C
1900 lines
52 KiB
C
/*
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* Linux host USB redirector
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Copyright (c) 2008 Max Krasnyansky
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* Support for host device auto connect & disconnect
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* Major rewrite to support fully async operation
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*
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* Copyright 2008 TJ <linux@tjworld.net>
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* Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
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* to the legacy /proc/bus/usb USB device discovery and handling
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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 "qemu-timer.h"
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#include "monitor.h"
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#include "sysemu.h"
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#include "trace.h"
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#include <dirent.h>
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#include <sys/ioctl.h>
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#include <linux/usbdevice_fs.h>
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#include <linux/version.h>
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#include "hw/usb.h"
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/* We redefine it to avoid version problems */
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struct usb_ctrltransfer {
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uint8_t bRequestType;
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uint8_t bRequest;
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uint16_t wValue;
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uint16_t wIndex;
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uint16_t wLength;
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uint32_t timeout;
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void *data;
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};
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typedef int USBScanFunc(void *opaque, int bus_num, int addr, const char *port,
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int class_id, int vendor_id, int product_id,
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const char *product_name, int speed);
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//#define DEBUG
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#ifdef DEBUG
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#define DPRINTF printf
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#else
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#define DPRINTF(...)
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#endif
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#define PRODUCT_NAME_SZ 32
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#define MAX_PORTLEN 16
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/* endpoint association data */
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#define ISO_FRAME_DESC_PER_URB 32
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/* devio.c limits single requests to 16k */
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#define MAX_USBFS_BUFFER_SIZE 16384
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typedef struct AsyncURB AsyncURB;
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struct endp_data {
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uint8_t halted;
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uint8_t iso_started;
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AsyncURB *iso_urb;
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int iso_urb_idx;
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int iso_buffer_used;
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int inflight;
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};
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struct USBAutoFilter {
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uint32_t bus_num;
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uint32_t addr;
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char *port;
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uint32_t vendor_id;
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uint32_t product_id;
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};
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typedef struct USBHostDevice {
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USBDevice dev;
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int fd;
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int hub_fd;
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int hub_port;
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uint8_t descr[8192];
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int descr_len;
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int closing;
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uint32_t iso_urb_count;
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Notifier exit;
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struct endp_data ep_in[USB_MAX_ENDPOINTS];
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struct endp_data ep_out[USB_MAX_ENDPOINTS];
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QLIST_HEAD(, AsyncURB) aurbs;
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/* Host side address */
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int bus_num;
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int addr;
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char port[MAX_PORTLEN];
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struct USBAutoFilter match;
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int seen, errcount;
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QTAILQ_ENTRY(USBHostDevice) next;
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} USBHostDevice;
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static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
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static int usb_host_close(USBHostDevice *dev);
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static int parse_filter(const char *spec, struct USBAutoFilter *f);
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static void usb_host_auto_check(void *unused);
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static int usb_host_read_file(char *line, size_t line_size,
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const char *device_file, const char *device_name);
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static int usb_linux_update_endp_table(USBHostDevice *s);
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static int usb_host_usbfs_type(USBHostDevice *s, USBPacket *p)
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{
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static const int usbfs[] = {
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[USB_ENDPOINT_XFER_CONTROL] = USBDEVFS_URB_TYPE_CONTROL,
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[USB_ENDPOINT_XFER_ISOC] = USBDEVFS_URB_TYPE_ISO,
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[USB_ENDPOINT_XFER_BULK] = USBDEVFS_URB_TYPE_BULK,
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[USB_ENDPOINT_XFER_INT] = USBDEVFS_URB_TYPE_INTERRUPT,
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};
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uint8_t type = usb_ep_get_type(&s->dev, p->pid, p->devep);
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assert(type < ARRAY_SIZE(usbfs));
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return usbfs[type];
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}
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static int usb_host_do_reset(USBHostDevice *dev)
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{
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struct timeval s, e;
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uint32_t usecs;
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int ret;
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gettimeofday(&s, NULL);
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ret = ioctl(dev->fd, USBDEVFS_RESET);
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gettimeofday(&e, NULL);
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usecs = (e.tv_sec - s.tv_sec) * 1000000;
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usecs += e.tv_usec - s.tv_usec;
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if (usecs > 1000000) {
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/* more than a second, something is fishy, broken usb device? */
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fprintf(stderr, "husb: device %d:%d reset took %d.%06d seconds\n",
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dev->bus_num, dev->addr, usecs / 1000000, usecs % 1000000);
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}
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return ret;
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}
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static struct endp_data *get_endp(USBHostDevice *s, int pid, int ep)
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{
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struct endp_data *eps = pid == USB_TOKEN_IN ? s->ep_in : s->ep_out;
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assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT);
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assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
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return eps + ep - 1;
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}
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static int is_isoc(USBHostDevice *s, int pid, int ep)
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{
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return usb_ep_get_type(&s->dev, pid, ep) == USB_ENDPOINT_XFER_ISOC;
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}
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static int is_valid(USBHostDevice *s, int pid, int ep)
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{
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return usb_ep_get_type(&s->dev, pid, ep) != USB_ENDPOINT_XFER_INVALID;
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}
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static int is_halted(USBHostDevice *s, int pid, int ep)
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{
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return get_endp(s, pid, ep)->halted;
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}
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static void clear_halt(USBHostDevice *s, int pid, int ep)
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{
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trace_usb_host_ep_clear_halt(s->bus_num, s->addr, ep);
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get_endp(s, pid, ep)->halted = 0;
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}
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static void set_halt(USBHostDevice *s, int pid, int ep)
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{
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if (ep != 0) {
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trace_usb_host_ep_set_halt(s->bus_num, s->addr, ep);
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get_endp(s, pid, ep)->halted = 1;
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}
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}
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static int is_iso_started(USBHostDevice *s, int pid, int ep)
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{
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return get_endp(s, pid, ep)->iso_started;
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}
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static void clear_iso_started(USBHostDevice *s, int pid, int ep)
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{
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trace_usb_host_ep_stop_iso(s->bus_num, s->addr, ep);
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get_endp(s, pid, ep)->iso_started = 0;
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}
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static void set_iso_started(USBHostDevice *s, int pid, int ep)
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{
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struct endp_data *e = get_endp(s, pid, ep);
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trace_usb_host_ep_start_iso(s->bus_num, s->addr, ep);
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if (!e->iso_started) {
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e->iso_started = 1;
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e->inflight = 0;
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}
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}
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static int change_iso_inflight(USBHostDevice *s, int pid, int ep, int value)
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{
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struct endp_data *e = get_endp(s, pid, ep);
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e->inflight += value;
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return e->inflight;
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}
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static void set_iso_urb(USBHostDevice *s, int pid, int ep, AsyncURB *iso_urb)
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{
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get_endp(s, pid, ep)->iso_urb = iso_urb;
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}
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static AsyncURB *get_iso_urb(USBHostDevice *s, int pid, int ep)
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{
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return get_endp(s, pid, ep)->iso_urb;
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}
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static void set_iso_urb_idx(USBHostDevice *s, int pid, int ep, int i)
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{
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get_endp(s, pid, ep)->iso_urb_idx = i;
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}
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static int get_iso_urb_idx(USBHostDevice *s, int pid, int ep)
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{
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return get_endp(s, pid, ep)->iso_urb_idx;
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}
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static void set_iso_buffer_used(USBHostDevice *s, int pid, int ep, int i)
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{
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get_endp(s, pid, ep)->iso_buffer_used = i;
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}
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static int get_iso_buffer_used(USBHostDevice *s, int pid, int ep)
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{
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return get_endp(s, pid, ep)->iso_buffer_used;
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}
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/*
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* Async URB state.
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* We always allocate iso packet descriptors even for bulk transfers
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* to simplify allocation and casts.
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*/
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struct AsyncURB
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{
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struct usbdevfs_urb urb;
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struct usbdevfs_iso_packet_desc isocpd[ISO_FRAME_DESC_PER_URB];
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USBHostDevice *hdev;
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QLIST_ENTRY(AsyncURB) next;
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/* For regular async urbs */
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USBPacket *packet;
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int more; /* large transfer, more urbs follow */
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/* For buffered iso handling */
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int iso_frame_idx; /* -1 means in flight */
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};
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static AsyncURB *async_alloc(USBHostDevice *s)
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{
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AsyncURB *aurb = g_malloc0(sizeof(AsyncURB));
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aurb->hdev = s;
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QLIST_INSERT_HEAD(&s->aurbs, aurb, next);
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return aurb;
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}
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static void async_free(AsyncURB *aurb)
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{
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QLIST_REMOVE(aurb, next);
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g_free(aurb);
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}
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static void do_disconnect(USBHostDevice *s)
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{
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usb_host_close(s);
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usb_host_auto_check(NULL);
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}
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static void async_complete(void *opaque)
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{
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USBHostDevice *s = opaque;
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AsyncURB *aurb;
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int urbs = 0;
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while (1) {
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USBPacket *p;
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int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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if (r < 0) {
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if (errno == EAGAIN) {
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if (urbs > 2) {
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fprintf(stderr, "husb: %d iso urbs finished at once\n", urbs);
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}
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return;
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}
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if (errno == ENODEV) {
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if (!s->closing) {
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trace_usb_host_disconnect(s->bus_num, s->addr);
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do_disconnect(s);
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}
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return;
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}
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perror("USBDEVFS_REAPURBNDELAY");
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return;
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}
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DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
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aurb, aurb->urb.status, aurb->urb.actual_length);
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/* If this is a buffered iso urb mark it as complete and don't do
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anything else (it is handled further in usb_host_handle_iso_data) */
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if (aurb->iso_frame_idx == -1) {
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int inflight;
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int pid = (aurb->urb.endpoint & USB_DIR_IN) ?
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USB_TOKEN_IN : USB_TOKEN_OUT;
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int ep = aurb->urb.endpoint & 0xf;
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if (aurb->urb.status == -EPIPE) {
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set_halt(s, pid, ep);
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}
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aurb->iso_frame_idx = 0;
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urbs++;
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inflight = change_iso_inflight(s, pid, ep, -1);
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if (inflight == 0 && is_iso_started(s, pid, ep)) {
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fprintf(stderr, "husb: out of buffers for iso stream\n");
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}
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continue;
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}
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p = aurb->packet;
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trace_usb_host_urb_complete(s->bus_num, s->addr, aurb, aurb->urb.status,
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aurb->urb.actual_length, aurb->more);
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if (p) {
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switch (aurb->urb.status) {
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case 0:
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p->result += aurb->urb.actual_length;
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break;
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case -EPIPE:
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set_halt(s, p->pid, p->devep);
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p->result = USB_RET_STALL;
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break;
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default:
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p->result = USB_RET_NAK;
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break;
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}
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if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
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trace_usb_host_req_complete(s->bus_num, s->addr, p->result);
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usb_generic_async_ctrl_complete(&s->dev, p);
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} else if (!aurb->more) {
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trace_usb_host_req_complete(s->bus_num, s->addr, p->result);
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usb_packet_complete(&s->dev, p);
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}
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}
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async_free(aurb);
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}
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}
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static void usb_host_async_cancel(USBDevice *dev, USBPacket *p)
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{
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USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
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AsyncURB *aurb;
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QLIST_FOREACH(aurb, &s->aurbs, next) {
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if (p != aurb->packet) {
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continue;
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}
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DPRINTF("husb: async cancel: packet %p, aurb %p\n", p, aurb);
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/* Mark it as dead (see async_complete above) */
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aurb->packet = NULL;
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int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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if (r < 0) {
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DPRINTF("husb: async. discard urb failed errno %d\n", errno);
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}
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}
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}
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static int usb_host_open_device(int bus, int addr)
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{
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const char *usbfs = NULL;
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char filename[32];
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struct stat st;
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int fd, rc;
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rc = stat("/dev/bus/usb", &st);
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if (rc == 0 && S_ISDIR(st.st_mode)) {
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/* udev-created device nodes available */
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usbfs = "/dev/bus/usb";
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} else {
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/* fallback: usbfs mounted below /proc */
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usbfs = "/proc/bus/usb";
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}
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snprintf(filename, sizeof(filename), "%s/%03d/%03d",
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usbfs, bus, addr);
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fd = open(filename, O_RDWR | O_NONBLOCK);
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if (fd < 0) {
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fprintf(stderr, "husb: open %s: %s\n", filename, strerror(errno));
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}
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return fd;
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}
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static int usb_host_claim_port(USBHostDevice *s)
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{
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#ifdef USBDEVFS_CLAIM_PORT
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char *h, hub_name[64], line[1024];
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int hub_addr, ret;
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snprintf(hub_name, sizeof(hub_name), "%d-%s",
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s->match.bus_num, s->match.port);
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/* try strip off last ".$portnr" to get hub */
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h = strrchr(hub_name, '.');
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if (h != NULL) {
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s->hub_port = atoi(h+1);
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*h = '\0';
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} else {
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/* no dot in there -> it is the root hub */
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snprintf(hub_name, sizeof(hub_name), "usb%d",
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s->match.bus_num);
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s->hub_port = atoi(s->match.port);
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}
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if (!usb_host_read_file(line, sizeof(line), "devnum",
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hub_name)) {
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return -1;
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}
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if (sscanf(line, "%d", &hub_addr) != 1) {
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return -1;
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}
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s->hub_fd = usb_host_open_device(s->match.bus_num, hub_addr);
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if (s->hub_fd < 0) {
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return -1;
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}
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ret = ioctl(s->hub_fd, USBDEVFS_CLAIM_PORT, &s->hub_port);
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if (ret < 0) {
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close(s->hub_fd);
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s->hub_fd = -1;
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return -1;
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}
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trace_usb_host_claim_port(s->match.bus_num, hub_addr, s->hub_port);
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return 0;
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#else
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return -1;
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#endif
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}
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static void usb_host_release_port(USBHostDevice *s)
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{
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if (s->hub_fd == -1) {
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return;
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}
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#ifdef USBDEVFS_RELEASE_PORT
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ioctl(s->hub_fd, USBDEVFS_RELEASE_PORT, &s->hub_port);
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#endif
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close(s->hub_fd);
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s->hub_fd = -1;
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}
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static int usb_host_disconnect_ifaces(USBHostDevice *dev, int nb_interfaces)
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{
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/* earlier Linux 2.4 do not support that */
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#ifdef USBDEVFS_DISCONNECT
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struct usbdevfs_ioctl ctrl;
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int ret, interface;
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for (interface = 0; interface < nb_interfaces; interface++) {
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ctrl.ioctl_code = USBDEVFS_DISCONNECT;
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ctrl.ifno = interface;
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ctrl.data = 0;
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ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
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if (ret < 0 && errno != ENODATA) {
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perror("USBDEVFS_DISCONNECT");
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return -1;
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}
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}
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#endif
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return 0;
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}
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static int usb_linux_get_num_interfaces(USBHostDevice *s)
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{
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|
char device_name[64], line[1024];
|
|
int num_interfaces = 0;
|
|
|
|
sprintf(device_name, "%d-%s", s->bus_num, s->port);
|
|
if (!usb_host_read_file(line, sizeof(line), "bNumInterfaces",
|
|
device_name)) {
|
|
return -1;
|
|
}
|
|
if (sscanf(line, "%d", &num_interfaces) != 1) {
|
|
return -1;
|
|
}
|
|
return num_interfaces;
|
|
}
|
|
|
|
static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
|
|
{
|
|
const char *op = NULL;
|
|
int dev_descr_len, config_descr_len;
|
|
int interface, nb_interfaces;
|
|
int ret, i;
|
|
|
|
for (i = 0; i < USB_MAX_INTERFACES; i++) {
|
|
dev->dev.altsetting[i] = 0;
|
|
}
|
|
|
|
if (configuration == 0) { /* address state - ignore */
|
|
dev->dev.ninterfaces = 0;
|
|
dev->dev.configuration = 0;
|
|
return 1;
|
|
}
|
|
|
|
DPRINTF("husb: claiming interfaces. config %d\n", configuration);
|
|
|
|
i = 0;
|
|
dev_descr_len = dev->descr[0];
|
|
if (dev_descr_len > dev->descr_len) {
|
|
fprintf(stderr, "husb: update iface failed. descr too short\n");
|
|
return 0;
|
|
}
|
|
|
|
i += dev_descr_len;
|
|
while (i < dev->descr_len) {
|
|
DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
|
|
i, dev->descr_len,
|
|
dev->descr[i], dev->descr[i+1]);
|
|
|
|
if (dev->descr[i+1] != USB_DT_CONFIG) {
|
|
i += dev->descr[i];
|
|
continue;
|
|
}
|
|
config_descr_len = dev->descr[i];
|
|
|
|
DPRINTF("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
|
|
|
|
if (configuration == dev->descr[i + 5]) {
|
|
configuration = dev->descr[i + 5];
|
|
break;
|
|
}
|
|
|
|
i += config_descr_len;
|
|
}
|
|
|
|
if (i >= dev->descr_len) {
|
|
fprintf(stderr,
|
|
"husb: update iface failed. no matching configuration\n");
|
|
return 0;
|
|
}
|
|
nb_interfaces = dev->descr[i + 4];
|
|
|
|
if (usb_host_disconnect_ifaces(dev, nb_interfaces) < 0) {
|
|
goto fail;
|
|
}
|
|
|
|
/* XXX: only grab if all interfaces are free */
|
|
for (interface = 0; interface < nb_interfaces; interface++) {
|
|
op = "USBDEVFS_CLAIMINTERFACE";
|
|
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
|
|
if (ret < 0) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
trace_usb_host_claim_interfaces(dev->bus_num, dev->addr,
|
|
nb_interfaces, configuration);
|
|
|
|
dev->dev.ninterfaces = nb_interfaces;
|
|
dev->dev.configuration = configuration;
|
|
return 1;
|
|
|
|
fail:
|
|
if (errno == ENODEV) {
|
|
do_disconnect(dev);
|
|
}
|
|
perror(op);
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_release_interfaces(USBHostDevice *s)
|
|
{
|
|
int ret, i;
|
|
|
|
trace_usb_host_release_interfaces(s->bus_num, s->addr);
|
|
|
|
for (i = 0; i < s->dev.ninterfaces; i++) {
|
|
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
|
|
if (ret < 0) {
|
|
perror("USBDEVFS_RELEASEINTERFACE");
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void usb_host_handle_reset(USBDevice *dev)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
|
|
trace_usb_host_reset(s->bus_num, s->addr);
|
|
|
|
usb_host_do_reset(s);;
|
|
|
|
usb_host_claim_interfaces(s, 0);
|
|
usb_linux_update_endp_table(s);
|
|
}
|
|
|
|
static void usb_host_handle_destroy(USBDevice *dev)
|
|
{
|
|
USBHostDevice *s = (USBHostDevice *)dev;
|
|
|
|
usb_host_release_port(s);
|
|
usb_host_close(s);
|
|
QTAILQ_REMOVE(&hostdevs, s, next);
|
|
qemu_remove_exit_notifier(&s->exit);
|
|
}
|
|
|
|
/* iso data is special, we need to keep enough urbs in flight to make sure
|
|
that the controller never runs out of them, otherwise the device will
|
|
likely suffer a buffer underrun / overrun. */
|
|
static AsyncURB *usb_host_alloc_iso(USBHostDevice *s, int pid, uint8_t ep)
|
|
{
|
|
AsyncURB *aurb;
|
|
int i, j, len = usb_ep_get_max_packet_size(&s->dev, pid, ep);
|
|
|
|
aurb = g_malloc0(s->iso_urb_count * sizeof(*aurb));
|
|
for (i = 0; i < s->iso_urb_count; i++) {
|
|
aurb[i].urb.endpoint = ep;
|
|
aurb[i].urb.buffer_length = ISO_FRAME_DESC_PER_URB * len;
|
|
aurb[i].urb.buffer = g_malloc(aurb[i].urb.buffer_length);
|
|
aurb[i].urb.type = USBDEVFS_URB_TYPE_ISO;
|
|
aurb[i].urb.flags = USBDEVFS_URB_ISO_ASAP;
|
|
aurb[i].urb.number_of_packets = ISO_FRAME_DESC_PER_URB;
|
|
for (j = 0 ; j < ISO_FRAME_DESC_PER_URB; j++)
|
|
aurb[i].urb.iso_frame_desc[j].length = len;
|
|
if (pid == USB_TOKEN_IN) {
|
|
aurb[i].urb.endpoint |= 0x80;
|
|
/* Mark as fully consumed (idle) */
|
|
aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB;
|
|
}
|
|
}
|
|
set_iso_urb(s, pid, ep, aurb);
|
|
|
|
return aurb;
|
|
}
|
|
|
|
static void usb_host_stop_n_free_iso(USBHostDevice *s, int pid, uint8_t ep)
|
|
{
|
|
AsyncURB *aurb;
|
|
int i, ret, killed = 0, free = 1;
|
|
|
|
aurb = get_iso_urb(s, pid, ep);
|
|
if (!aurb) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < s->iso_urb_count; i++) {
|
|
/* in flight? */
|
|
if (aurb[i].iso_frame_idx == -1) {
|
|
ret = ioctl(s->fd, USBDEVFS_DISCARDURB, &aurb[i]);
|
|
if (ret < 0) {
|
|
perror("USBDEVFS_DISCARDURB");
|
|
free = 0;
|
|
continue;
|
|
}
|
|
killed++;
|
|
}
|
|
}
|
|
|
|
/* Make sure any urbs we've killed are reaped before we free them */
|
|
if (killed) {
|
|
async_complete(s);
|
|
}
|
|
|
|
for (i = 0; i < s->iso_urb_count; i++) {
|
|
g_free(aurb[i].urb.buffer);
|
|
}
|
|
|
|
if (free)
|
|
g_free(aurb);
|
|
else
|
|
printf("husb: leaking iso urbs because of discard failure\n");
|
|
set_iso_urb(s, pid, ep, NULL);
|
|
set_iso_urb_idx(s, pid, ep, 0);
|
|
clear_iso_started(s, pid, ep);
|
|
}
|
|
|
|
static int urb_status_to_usb_ret(int status)
|
|
{
|
|
switch (status) {
|
|
case -EPIPE:
|
|
return USB_RET_STALL;
|
|
default:
|
|
return USB_RET_NAK;
|
|
}
|
|
}
|
|
|
|
static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p, int in)
|
|
{
|
|
AsyncURB *aurb;
|
|
int i, j, ret, max_packet_size, offset, len = 0;
|
|
uint8_t *buf;
|
|
|
|
max_packet_size = usb_ep_get_max_packet_size(&s->dev, p->pid, p->devep);
|
|
if (max_packet_size == 0)
|
|
return USB_RET_NAK;
|
|
|
|
aurb = get_iso_urb(s, p->pid, p->devep);
|
|
if (!aurb) {
|
|
aurb = usb_host_alloc_iso(s, p->pid, p->devep);
|
|
}
|
|
|
|
i = get_iso_urb_idx(s, p->pid, p->devep);
|
|
j = aurb[i].iso_frame_idx;
|
|
if (j >= 0 && j < ISO_FRAME_DESC_PER_URB) {
|
|
if (in) {
|
|
/* Check urb status */
|
|
if (aurb[i].urb.status) {
|
|
len = urb_status_to_usb_ret(aurb[i].urb.status);
|
|
/* Move to the next urb */
|
|
aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB - 1;
|
|
/* Check frame status */
|
|
} else if (aurb[i].urb.iso_frame_desc[j].status) {
|
|
len = urb_status_to_usb_ret(
|
|
aurb[i].urb.iso_frame_desc[j].status);
|
|
/* Check the frame fits */
|
|
} else if (aurb[i].urb.iso_frame_desc[j].actual_length
|
|
> p->iov.size) {
|
|
printf("husb: received iso data is larger then packet\n");
|
|
len = USB_RET_NAK;
|
|
/* All good copy data over */
|
|
} else {
|
|
len = aurb[i].urb.iso_frame_desc[j].actual_length;
|
|
buf = aurb[i].urb.buffer +
|
|
j * aurb[i].urb.iso_frame_desc[0].length;
|
|
usb_packet_copy(p, buf, len);
|
|
}
|
|
} else {
|
|
len = p->iov.size;
|
|
offset = (j == 0) ? 0 : get_iso_buffer_used(s, p->pid, p->devep);
|
|
|
|
/* Check the frame fits */
|
|
if (len > max_packet_size) {
|
|
printf("husb: send iso data is larger then max packet size\n");
|
|
return USB_RET_NAK;
|
|
}
|
|
|
|
/* All good copy data over */
|
|
usb_packet_copy(p, aurb[i].urb.buffer + offset, len);
|
|
aurb[i].urb.iso_frame_desc[j].length = len;
|
|
offset += len;
|
|
set_iso_buffer_used(s, p->pid, p->devep, offset);
|
|
|
|
/* Start the stream once we have buffered enough data */
|
|
if (!is_iso_started(s, p->pid, p->devep) && i == 1 && j == 8) {
|
|
set_iso_started(s, p->pid, p->devep);
|
|
}
|
|
}
|
|
aurb[i].iso_frame_idx++;
|
|
if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
|
|
i = (i + 1) % s->iso_urb_count;
|
|
set_iso_urb_idx(s, p->pid, p->devep, i);
|
|
}
|
|
} else {
|
|
if (in) {
|
|
set_iso_started(s, p->pid, p->devep);
|
|
} else {
|
|
DPRINTF("hubs: iso out error no free buffer, dropping packet\n");
|
|
}
|
|
}
|
|
|
|
if (is_iso_started(s, p->pid, p->devep)) {
|
|
/* (Re)-submit all fully consumed / filled urbs */
|
|
for (i = 0; i < s->iso_urb_count; i++) {
|
|
if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
|
|
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, &aurb[i]);
|
|
if (ret < 0) {
|
|
perror("USBDEVFS_SUBMITURB");
|
|
if (!in || len == 0) {
|
|
switch(errno) {
|
|
case ETIMEDOUT:
|
|
len = USB_RET_NAK;
|
|
break;
|
|
case EPIPE:
|
|
default:
|
|
len = USB_RET_STALL;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
aurb[i].iso_frame_idx = -1;
|
|
change_iso_inflight(s, p->pid, p->devep, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
struct usbdevfs_urb *urb;
|
|
AsyncURB *aurb;
|
|
int ret, rem, prem, v;
|
|
uint8_t *pbuf;
|
|
uint8_t ep;
|
|
|
|
trace_usb_host_req_data(s->bus_num, s->addr,
|
|
p->pid == USB_TOKEN_IN,
|
|
p->devep, p->iov.size);
|
|
|
|
if (!is_valid(s, p->pid, p->devep)) {
|
|
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK);
|
|
return USB_RET_NAK;
|
|
}
|
|
|
|
if (p->pid == USB_TOKEN_IN) {
|
|
ep = p->devep | 0x80;
|
|
} else {
|
|
ep = p->devep;
|
|
}
|
|
|
|
if (is_halted(s, p->pid, p->devep)) {
|
|
unsigned int arg = ep;
|
|
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &arg);
|
|
if (ret < 0) {
|
|
perror("USBDEVFS_CLEAR_HALT");
|
|
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK);
|
|
return USB_RET_NAK;
|
|
}
|
|
clear_halt(s, p->pid, p->devep);
|
|
}
|
|
|
|
if (is_isoc(s, p->pid, p->devep)) {
|
|
return usb_host_handle_iso_data(s, p, p->pid == USB_TOKEN_IN);
|
|
}
|
|
|
|
v = 0;
|
|
prem = p->iov.iov[v].iov_len;
|
|
pbuf = p->iov.iov[v].iov_base;
|
|
rem = p->iov.size;
|
|
while (rem) {
|
|
if (prem == 0) {
|
|
v++;
|
|
assert(v < p->iov.niov);
|
|
prem = p->iov.iov[v].iov_len;
|
|
pbuf = p->iov.iov[v].iov_base;
|
|
assert(prem <= rem);
|
|
}
|
|
aurb = async_alloc(s);
|
|
aurb->packet = p;
|
|
|
|
urb = &aurb->urb;
|
|
urb->endpoint = ep;
|
|
urb->type = usb_host_usbfs_type(s, p);
|
|
urb->usercontext = s;
|
|
urb->buffer = pbuf;
|
|
urb->buffer_length = prem;
|
|
|
|
if (urb->buffer_length > MAX_USBFS_BUFFER_SIZE) {
|
|
urb->buffer_length = MAX_USBFS_BUFFER_SIZE;
|
|
}
|
|
pbuf += urb->buffer_length;
|
|
prem -= urb->buffer_length;
|
|
rem -= urb->buffer_length;
|
|
if (rem) {
|
|
aurb->more = 1;
|
|
}
|
|
|
|
trace_usb_host_urb_submit(s->bus_num, s->addr, aurb,
|
|
urb->buffer_length, aurb->more);
|
|
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
|
|
|
|
DPRINTF("husb: data submit: ep 0x%x, len %u, more %d, packet %p, aurb %p\n",
|
|
urb->endpoint, urb->buffer_length, aurb->more, p, aurb);
|
|
|
|
if (ret < 0) {
|
|
perror("USBDEVFS_SUBMITURB");
|
|
async_free(aurb);
|
|
|
|
switch(errno) {
|
|
case ETIMEDOUT:
|
|
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK);
|
|
return USB_RET_NAK;
|
|
case EPIPE:
|
|
default:
|
|
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_STALL);
|
|
return USB_RET_STALL;
|
|
}
|
|
}
|
|
}
|
|
|
|
return USB_RET_ASYNC;
|
|
}
|
|
|
|
static int ctrl_error(void)
|
|
{
|
|
if (errno == ETIMEDOUT) {
|
|
return USB_RET_NAK;
|
|
} else {
|
|
return USB_RET_STALL;
|
|
}
|
|
}
|
|
|
|
static int usb_host_set_address(USBHostDevice *s, int addr)
|
|
{
|
|
trace_usb_host_set_address(s->bus_num, s->addr, addr);
|
|
s->dev.addr = addr;
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_set_config(USBHostDevice *s, int config)
|
|
{
|
|
int ret, first = 1;
|
|
|
|
trace_usb_host_set_config(s->bus_num, s->addr, config);
|
|
|
|
usb_host_release_interfaces(s);
|
|
|
|
again:
|
|
ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
|
|
|
DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
|
|
|
if (ret < 0 && errno == EBUSY && first) {
|
|
/* happens if usb device is in use by host drivers */
|
|
int count = usb_linux_get_num_interfaces(s);
|
|
if (count > 0) {
|
|
DPRINTF("husb: busy -> disconnecting %d interfaces\n", count);
|
|
usb_host_disconnect_ifaces(s, count);
|
|
first = 0;
|
|
goto again;
|
|
}
|
|
}
|
|
|
|
if (ret < 0) {
|
|
return ctrl_error();
|
|
}
|
|
usb_host_claim_interfaces(s, config);
|
|
usb_linux_update_endp_table(s);
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
|
|
{
|
|
struct usbdevfs_setinterface si;
|
|
int i, ret;
|
|
|
|
trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
|
|
|
|
for (i = 1; i <= USB_MAX_ENDPOINTS; i++) {
|
|
if (is_isoc(s, USB_TOKEN_IN, i)) {
|
|
usb_host_stop_n_free_iso(s, USB_TOKEN_IN, i);
|
|
}
|
|
if (is_isoc(s, USB_TOKEN_OUT, i)) {
|
|
usb_host_stop_n_free_iso(s, USB_TOKEN_OUT, i);
|
|
}
|
|
}
|
|
|
|
if (iface >= USB_MAX_INTERFACES) {
|
|
return USB_RET_STALL;
|
|
}
|
|
|
|
si.interface = iface;
|
|
si.altsetting = alt;
|
|
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
|
|
|
|
DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
|
iface, alt, ret, errno);
|
|
|
|
if (ret < 0) {
|
|
return ctrl_error();
|
|
}
|
|
|
|
s->dev.altsetting[iface] = alt;
|
|
usb_linux_update_endp_table(s);
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_handle_control(USBDevice *dev, USBPacket *p,
|
|
int request, int value, int index, int length, uint8_t *data)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
struct usbdevfs_urb *urb;
|
|
AsyncURB *aurb;
|
|
int ret;
|
|
|
|
/*
|
|
* Process certain standard device requests.
|
|
* These are infrequent and are processed synchronously.
|
|
*/
|
|
|
|
/* Note request is (bRequestType << 8) | bRequest */
|
|
trace_usb_host_req_control(s->bus_num, s->addr, request, value, index);
|
|
|
|
switch (request) {
|
|
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
|
return usb_host_set_address(s, value);
|
|
|
|
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
|
return usb_host_set_config(s, value & 0xff);
|
|
|
|
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
|
|
return usb_host_set_interface(s, index, value);
|
|
}
|
|
|
|
/* The rest are asynchronous */
|
|
|
|
if (length > sizeof(dev->data_buf)) {
|
|
fprintf(stderr, "husb: ctrl buffer too small (%d > %zu)\n",
|
|
length, sizeof(dev->data_buf));
|
|
return USB_RET_STALL;
|
|
}
|
|
|
|
aurb = async_alloc(s);
|
|
aurb->packet = p;
|
|
|
|
/*
|
|
* Setup ctrl transfer.
|
|
*
|
|
* s->ctrl is laid out such that data buffer immediately follows
|
|
* 'req' struct which is exactly what usbdevfs expects.
|
|
*/
|
|
urb = &aurb->urb;
|
|
|
|
urb->type = USBDEVFS_URB_TYPE_CONTROL;
|
|
urb->endpoint = p->devep;
|
|
|
|
urb->buffer = &dev->setup_buf;
|
|
urb->buffer_length = length + 8;
|
|
|
|
urb->usercontext = s;
|
|
|
|
trace_usb_host_urb_submit(s->bus_num, s->addr, aurb,
|
|
urb->buffer_length, aurb->more);
|
|
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
|
|
|
|
DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
|
|
|
if (ret < 0) {
|
|
DPRINTF("husb: submit failed. errno %d\n", errno);
|
|
async_free(aurb);
|
|
|
|
switch(errno) {
|
|
case ETIMEDOUT:
|
|
return USB_RET_NAK;
|
|
case EPIPE:
|
|
default:
|
|
return USB_RET_STALL;
|
|
}
|
|
}
|
|
|
|
return USB_RET_ASYNC;
|
|
}
|
|
|
|
static uint8_t usb_linux_get_alt_setting(USBHostDevice *s,
|
|
uint8_t configuration, uint8_t interface)
|
|
{
|
|
char device_name[64], line[1024];
|
|
int alt_setting;
|
|
|
|
sprintf(device_name, "%d-%s:%d.%d", s->bus_num, s->port,
|
|
(int)configuration, (int)interface);
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "bAlternateSetting",
|
|
device_name)) {
|
|
/* Assume alt 0 on error */
|
|
return 0;
|
|
}
|
|
if (sscanf(line, "%d", &alt_setting) != 1) {
|
|
/* Assume alt 0 on error */
|
|
return 0;
|
|
}
|
|
return alt_setting;
|
|
}
|
|
|
|
/* returns 1 on problem encountered or 0 for success */
|
|
static int usb_linux_update_endp_table(USBHostDevice *s)
|
|
{
|
|
uint8_t *descriptors;
|
|
uint8_t devep, type, alt_interface;
|
|
uint16_t raw;
|
|
int interface, length, i, ep, pid;
|
|
struct endp_data *epd;
|
|
|
|
usb_ep_init(&s->dev);
|
|
|
|
if (s->dev.configuration == 0) {
|
|
/* not configured yet -- leave all endpoints disabled */
|
|
return 0;
|
|
}
|
|
|
|
/* get the desired configuration, interface, and endpoint descriptors
|
|
* from device description */
|
|
descriptors = &s->descr[18];
|
|
length = s->descr_len - 18;
|
|
i = 0;
|
|
|
|
while (i < length) {
|
|
if (descriptors[i + 1] != USB_DT_CONFIG) {
|
|
fprintf(stderr, "invalid descriptor data\n");
|
|
return 1;
|
|
} else if (descriptors[i + 5] != s->dev.configuration) {
|
|
DPRINTF("not requested configuration %d\n", s->dev.configuration);
|
|
i += (descriptors[i + 3] << 8) + descriptors[i + 2];
|
|
continue;
|
|
}
|
|
i += descriptors[i];
|
|
|
|
if (descriptors[i + 1] != USB_DT_INTERFACE ||
|
|
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
|
descriptors[i + 4] == 0)) {
|
|
i += descriptors[i];
|
|
continue;
|
|
}
|
|
|
|
interface = descriptors[i + 2];
|
|
alt_interface = usb_linux_get_alt_setting(s, s->dev.configuration,
|
|
interface);
|
|
|
|
/* the current interface descriptor is the active interface
|
|
* and has endpoints */
|
|
if (descriptors[i + 3] != alt_interface) {
|
|
i += descriptors[i];
|
|
continue;
|
|
}
|
|
|
|
/* advance to the endpoints */
|
|
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) {
|
|
i += descriptors[i];
|
|
}
|
|
|
|
if (i >= length)
|
|
break;
|
|
|
|
while (i < length) {
|
|
if (descriptors[i + 1] != USB_DT_ENDPOINT) {
|
|
break;
|
|
}
|
|
|
|
devep = descriptors[i + 2];
|
|
pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
|
|
ep = devep & 0xf;
|
|
if (ep == 0) {
|
|
fprintf(stderr, "usb-linux: invalid ep descriptor, ep == 0\n");
|
|
return 1;
|
|
}
|
|
|
|
type = descriptors[i + 3] & 0x3;
|
|
raw = descriptors[i + 4] + (descriptors[i + 5] << 8);
|
|
usb_ep_set_max_packet_size(&s->dev, pid, ep, raw);
|
|
assert(usb_ep_get_type(&s->dev, pid, ep) ==
|
|
USB_ENDPOINT_XFER_INVALID);
|
|
usb_ep_set_type(&s->dev, pid, ep, type);
|
|
usb_ep_set_ifnum(&s->dev, pid, ep, interface);
|
|
|
|
epd = get_endp(s, pid, ep);
|
|
epd->halted = 0;
|
|
|
|
i += descriptors[i];
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
usb_ep_dump(&s->dev);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check if we can safely redirect a usb2 device to a usb1 virtual controller,
|
|
* this function assumes this is safe, if:
|
|
* 1) There are no isoc endpoints
|
|
* 2) There are no interrupt endpoints with a max_packet_size > 64
|
|
* Note bulk endpoints with a max_packet_size > 64 in theory also are not
|
|
* usb1 compatible, but in practice this seems to work fine.
|
|
*/
|
|
static int usb_linux_full_speed_compat(USBHostDevice *dev)
|
|
{
|
|
int i, packet_size;
|
|
|
|
/*
|
|
* usb_linux_update_endp_table only registers info about ep in the current
|
|
* interface altsettings, so we need to parse the descriptors again.
|
|
*/
|
|
for (i = 0; (i + 5) < dev->descr_len; i += dev->descr[i]) {
|
|
if (dev->descr[i + 1] == USB_DT_ENDPOINT) {
|
|
switch (dev->descr[i + 3] & 0x3) {
|
|
case 0x00: /* CONTROL */
|
|
break;
|
|
case 0x01: /* ISO */
|
|
return 0;
|
|
case 0x02: /* BULK */
|
|
break;
|
|
case 0x03: /* INTERRUPT */
|
|
packet_size = dev->descr[i + 4] + (dev->descr[i + 5] << 8);
|
|
if (packet_size > 64)
|
|
return 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int usb_host_open(USBHostDevice *dev, int bus_num,
|
|
int addr, const char *port,
|
|
const char *prod_name, int speed)
|
|
{
|
|
int fd = -1, ret;
|
|
|
|
trace_usb_host_open_started(bus_num, addr);
|
|
|
|
if (dev->fd != -1) {
|
|
goto fail;
|
|
}
|
|
|
|
fd = usb_host_open_device(bus_num, addr);
|
|
if (fd < 0) {
|
|
goto fail;
|
|
}
|
|
DPRINTF("husb: opened %s\n", buf);
|
|
|
|
dev->bus_num = bus_num;
|
|
dev->addr = addr;
|
|
strcpy(dev->port, port);
|
|
dev->fd = fd;
|
|
|
|
/* read the device description */
|
|
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
|
if (dev->descr_len <= 0) {
|
|
perror("husb: reading device data failed");
|
|
goto fail;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
{
|
|
int x;
|
|
printf("=== begin dumping device descriptor data ===\n");
|
|
for (x = 0; x < dev->descr_len; x++) {
|
|
printf("%02x ", dev->descr[x]);
|
|
}
|
|
printf("\n=== end dumping device descriptor data ===\n");
|
|
}
|
|
#endif
|
|
|
|
|
|
/* start unconfigured -- we'll wait for the guest to set a configuration */
|
|
if (!usb_host_claim_interfaces(dev, 0)) {
|
|
goto fail;
|
|
}
|
|
|
|
ret = usb_linux_update_endp_table(dev);
|
|
if (ret) {
|
|
goto fail;
|
|
}
|
|
|
|
if (speed == -1) {
|
|
struct usbdevfs_connectinfo ci;
|
|
|
|
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
|
|
if (ret < 0) {
|
|
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
|
goto fail;
|
|
}
|
|
|
|
if (ci.slow) {
|
|
speed = USB_SPEED_LOW;
|
|
} else {
|
|
speed = USB_SPEED_HIGH;
|
|
}
|
|
}
|
|
dev->dev.speed = speed;
|
|
dev->dev.speedmask = (1 << speed);
|
|
if (dev->dev.speed == USB_SPEED_HIGH && usb_linux_full_speed_compat(dev)) {
|
|
dev->dev.speedmask |= USB_SPEED_MASK_FULL;
|
|
}
|
|
|
|
trace_usb_host_open_success(bus_num, addr);
|
|
|
|
if (!prod_name || prod_name[0] == '\0') {
|
|
snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
|
"host:%d.%d", bus_num, addr);
|
|
} else {
|
|
pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
|
prod_name);
|
|
}
|
|
|
|
ret = usb_device_attach(&dev->dev);
|
|
if (ret) {
|
|
goto fail;
|
|
}
|
|
|
|
/* USB devio uses 'write' flag to check for async completions */
|
|
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
trace_usb_host_open_failure(bus_num, addr);
|
|
if (dev->fd != -1) {
|
|
close(dev->fd);
|
|
dev->fd = -1;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int usb_host_close(USBHostDevice *dev)
|
|
{
|
|
int i;
|
|
|
|
if (dev->fd == -1) {
|
|
return -1;
|
|
}
|
|
|
|
trace_usb_host_close(dev->bus_num, dev->addr);
|
|
|
|
qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
|
|
dev->closing = 1;
|
|
for (i = 1; i <= USB_MAX_ENDPOINTS; i++) {
|
|
if (is_isoc(dev, USB_TOKEN_IN, i)) {
|
|
usb_host_stop_n_free_iso(dev, USB_TOKEN_IN, i);
|
|
}
|
|
if (is_isoc(dev, USB_TOKEN_OUT, i)) {
|
|
usb_host_stop_n_free_iso(dev, USB_TOKEN_OUT, i);
|
|
}
|
|
}
|
|
async_complete(dev);
|
|
dev->closing = 0;
|
|
if (dev->dev.attached) {
|
|
usb_device_detach(&dev->dev);
|
|
}
|
|
usb_host_do_reset(dev);
|
|
close(dev->fd);
|
|
dev->fd = -1;
|
|
return 0;
|
|
}
|
|
|
|
static void usb_host_exit_notifier(struct Notifier *n, void *data)
|
|
{
|
|
USBHostDevice *s = container_of(n, USBHostDevice, exit);
|
|
|
|
usb_host_release_port(s);
|
|
if (s->fd != -1) {
|
|
usb_host_do_reset(s);;
|
|
}
|
|
}
|
|
|
|
static int usb_host_initfn(USBDevice *dev)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
|
|
dev->auto_attach = 0;
|
|
s->fd = -1;
|
|
s->hub_fd = -1;
|
|
|
|
QTAILQ_INSERT_TAIL(&hostdevs, s, next);
|
|
s->exit.notify = usb_host_exit_notifier;
|
|
qemu_add_exit_notifier(&s->exit);
|
|
usb_host_auto_check(NULL);
|
|
|
|
if (s->match.bus_num != 0 && s->match.port != NULL) {
|
|
usb_host_claim_port(s);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const VMStateDescription vmstate_usb_host = {
|
|
.name = "usb-host",
|
|
.unmigratable = 1,
|
|
};
|
|
|
|
static void usb_host_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
|
|
uc->init = usb_host_initfn;
|
|
uc->product_desc = "USB Host Device";
|
|
uc->handle_packet = usb_generic_handle_packet;
|
|
uc->cancel_packet = usb_host_async_cancel;
|
|
uc->handle_data = usb_host_handle_data;
|
|
uc->handle_control = usb_host_handle_control;
|
|
uc->handle_reset = usb_host_handle_reset;
|
|
uc->handle_destroy = usb_host_handle_destroy;
|
|
}
|
|
|
|
static struct DeviceInfo usb_host_dev_info = {
|
|
.name = "usb-host",
|
|
.size = sizeof(USBHostDevice),
|
|
.vmsd = &vmstate_usb_host,
|
|
.class_init= usb_host_class_initfn,
|
|
.props = (Property[]) {
|
|
DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
|
|
DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
|
|
DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
|
|
DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
|
|
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
|
|
DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
},
|
|
};
|
|
|
|
static void usb_host_register_devices(void)
|
|
{
|
|
usb_qdev_register(&usb_host_dev_info, "host", usb_host_device_open);
|
|
}
|
|
device_init(usb_host_register_devices)
|
|
|
|
USBDevice *usb_host_device_open(const char *devname)
|
|
{
|
|
struct USBAutoFilter filter;
|
|
USBDevice *dev;
|
|
char *p;
|
|
|
|
dev = usb_create(NULL /* FIXME */, "usb-host");
|
|
|
|
if (strstr(devname, "auto:")) {
|
|
if (parse_filter(devname, &filter) < 0) {
|
|
goto fail;
|
|
}
|
|
} else {
|
|
if ((p = strchr(devname, '.'))) {
|
|
filter.bus_num = strtoul(devname, NULL, 0);
|
|
filter.addr = strtoul(p + 1, NULL, 0);
|
|
filter.vendor_id = 0;
|
|
filter.product_id = 0;
|
|
} else if ((p = strchr(devname, ':'))) {
|
|
filter.bus_num = 0;
|
|
filter.addr = 0;
|
|
filter.vendor_id = strtoul(devname, NULL, 16);
|
|
filter.product_id = strtoul(p + 1, NULL, 16);
|
|
} else {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
|
|
qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
|
|
qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
|
|
qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
|
|
qdev_init_nofail(&dev->qdev);
|
|
return dev;
|
|
|
|
fail:
|
|
qdev_free(&dev->qdev);
|
|
return NULL;
|
|
}
|
|
|
|
int usb_host_device_close(const char *devname)
|
|
{
|
|
#if 0
|
|
char product_name[PRODUCT_NAME_SZ];
|
|
int bus_num, addr;
|
|
USBHostDevice *s;
|
|
|
|
if (strstr(devname, "auto:")) {
|
|
return usb_host_auto_del(devname);
|
|
}
|
|
if (usb_host_find_device(&bus_num, &addr, product_name,
|
|
sizeof(product_name), devname) < 0) {
|
|
return -1;
|
|
}
|
|
s = hostdev_find(bus_num, addr);
|
|
if (s) {
|
|
usb_device_delete_addr(s->bus_num, s->dev.addr);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Read sys file-system device file
|
|
*
|
|
* @line address of buffer to put file contents in
|
|
* @line_size size of line
|
|
* @device_file path to device file (printf format string)
|
|
* @device_name device being opened (inserted into device_file)
|
|
*
|
|
* @return 0 failed, 1 succeeded ('line' contains data)
|
|
*/
|
|
static int usb_host_read_file(char *line, size_t line_size,
|
|
const char *device_file, const char *device_name)
|
|
{
|
|
FILE *f;
|
|
int ret = 0;
|
|
char filename[PATH_MAX];
|
|
|
|
snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/%s", device_name,
|
|
device_file);
|
|
f = fopen(filename, "r");
|
|
if (f) {
|
|
ret = fgets(line, line_size, f) != NULL;
|
|
fclose(f);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
|
* devices.
|
|
*
|
|
* This code is based on Robert Schiele's original patches posted to
|
|
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
|
*/
|
|
static int usb_host_scan(void *opaque, USBScanFunc *func)
|
|
{
|
|
DIR *dir = NULL;
|
|
char line[1024];
|
|
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
|
int ret = 0;
|
|
char port[MAX_PORTLEN];
|
|
char product_name[512];
|
|
struct dirent *de;
|
|
|
|
dir = opendir("/sys/bus/usb/devices");
|
|
if (!dir) {
|
|
perror("husb: opendir /sys/bus/usb/devices");
|
|
fprintf(stderr, "husb: please make sure sysfs is mounted at /sys\n");
|
|
goto the_end;
|
|
}
|
|
|
|
while ((de = readdir(dir))) {
|
|
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
|
|
if (sscanf(de->d_name, "%d-%7[0-9.]", &bus_num, port) < 2) {
|
|
continue;
|
|
}
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%d", &addr) != 1) {
|
|
goto the_end;
|
|
}
|
|
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
|
|
de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%x", &class_id) != 1) {
|
|
goto the_end;
|
|
}
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "idVendor",
|
|
de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%x", &vendor_id) != 1) {
|
|
goto the_end;
|
|
}
|
|
if (!usb_host_read_file(line, sizeof(line), "idProduct",
|
|
de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%x", &product_id) != 1) {
|
|
goto the_end;
|
|
}
|
|
if (!usb_host_read_file(line, sizeof(line), "product",
|
|
de->d_name)) {
|
|
*product_name = 0;
|
|
} else {
|
|
if (strlen(line) > 0) {
|
|
line[strlen(line) - 1] = '\0';
|
|
}
|
|
pstrcpy(product_name, sizeof(product_name), line);
|
|
}
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (!strcmp(line, "5000\n")) {
|
|
speed = USB_SPEED_SUPER;
|
|
} else if (!strcmp(line, "480\n")) {
|
|
speed = USB_SPEED_HIGH;
|
|
} else if (!strcmp(line, "1.5\n")) {
|
|
speed = USB_SPEED_LOW;
|
|
} else {
|
|
speed = USB_SPEED_FULL;
|
|
}
|
|
|
|
ret = func(opaque, bus_num, addr, port, class_id, vendor_id,
|
|
product_id, product_name, speed);
|
|
if (ret) {
|
|
goto the_end;
|
|
}
|
|
}
|
|
}
|
|
the_end:
|
|
if (dir) {
|
|
closedir(dir);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static QEMUTimer *usb_auto_timer;
|
|
|
|
static int usb_host_auto_scan(void *opaque, int bus_num,
|
|
int addr, const char *port,
|
|
int class_id, int vendor_id, int product_id,
|
|
const char *product_name, int speed)
|
|
{
|
|
struct USBAutoFilter *f;
|
|
struct USBHostDevice *s;
|
|
|
|
/* Ignore hubs */
|
|
if (class_id == 9)
|
|
return 0;
|
|
|
|
QTAILQ_FOREACH(s, &hostdevs, next) {
|
|
f = &s->match;
|
|
|
|
if (f->bus_num > 0 && f->bus_num != bus_num) {
|
|
continue;
|
|
}
|
|
if (f->addr > 0 && f->addr != addr) {
|
|
continue;
|
|
}
|
|
if (f->port != NULL && (port == NULL || strcmp(f->port, port) != 0)) {
|
|
continue;
|
|
}
|
|
|
|
if (f->vendor_id > 0 && f->vendor_id != vendor_id) {
|
|
continue;
|
|
}
|
|
|
|
if (f->product_id > 0 && f->product_id != product_id) {
|
|
continue;
|
|
}
|
|
/* We got a match */
|
|
s->seen++;
|
|
if (s->errcount >= 3) {
|
|
return 0;
|
|
}
|
|
|
|
/* Already attached ? */
|
|
if (s->fd != -1) {
|
|
return 0;
|
|
}
|
|
DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
|
|
|
if (usb_host_open(s, bus_num, addr, port, product_name, speed) < 0) {
|
|
s->errcount++;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void usb_host_auto_check(void *unused)
|
|
{
|
|
struct USBHostDevice *s;
|
|
int unconnected = 0;
|
|
|
|
usb_host_scan(NULL, usb_host_auto_scan);
|
|
|
|
QTAILQ_FOREACH(s, &hostdevs, next) {
|
|
if (s->fd == -1) {
|
|
unconnected++;
|
|
}
|
|
if (s->seen == 0) {
|
|
s->errcount = 0;
|
|
}
|
|
s->seen = 0;
|
|
}
|
|
|
|
if (unconnected == 0) {
|
|
/* nothing to watch */
|
|
if (usb_auto_timer) {
|
|
qemu_del_timer(usb_auto_timer);
|
|
trace_usb_host_auto_scan_disabled();
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!usb_auto_timer) {
|
|
usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL);
|
|
if (!usb_auto_timer) {
|
|
return;
|
|
}
|
|
trace_usb_host_auto_scan_enabled();
|
|
}
|
|
qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000);
|
|
}
|
|
|
|
/*
|
|
* Autoconnect filter
|
|
* Format:
|
|
* auto:bus:dev[:vid:pid]
|
|
* auto:bus.dev[:vid:pid]
|
|
*
|
|
* bus - bus number (dec, * means any)
|
|
* dev - device number (dec, * means any)
|
|
* vid - vendor id (hex, * means any)
|
|
* pid - product id (hex, * means any)
|
|
*
|
|
* See 'lsusb' output.
|
|
*/
|
|
static int parse_filter(const char *spec, struct USBAutoFilter *f)
|
|
{
|
|
enum { BUS, DEV, VID, PID, DONE };
|
|
const char *p = spec;
|
|
int i;
|
|
|
|
f->bus_num = 0;
|
|
f->addr = 0;
|
|
f->vendor_id = 0;
|
|
f->product_id = 0;
|
|
|
|
for (i = BUS; i < DONE; i++) {
|
|
p = strpbrk(p, ":.");
|
|
if (!p) {
|
|
break;
|
|
}
|
|
p++;
|
|
|
|
if (*p == '*') {
|
|
continue;
|
|
}
|
|
switch(i) {
|
|
case BUS: f->bus_num = strtol(p, NULL, 10); break;
|
|
case DEV: f->addr = strtol(p, NULL, 10); break;
|
|
case VID: f->vendor_id = strtol(p, NULL, 16); break;
|
|
case PID: f->product_id = strtol(p, NULL, 16); break;
|
|
}
|
|
}
|
|
|
|
if (i < DEV) {
|
|
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**********************/
|
|
/* 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, const char *port,
|
|
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;
|
|
case USB_SPEED_SUPER:
|
|
speed_str = "5000";
|
|
break;
|
|
default:
|
|
speed_str = "?";
|
|
break;
|
|
}
|
|
|
|
monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
|
|
bus_num, addr, port, 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,
|
|
const char *path, 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, path, class_id, vendor_id, product_id,
|
|
product_name, speed);
|
|
return 0;
|
|
}
|
|
|
|
static void dec2str(int val, char *str, size_t size)
|
|
{
|
|
if (val == 0) {
|
|
snprintf(str, size, "*");
|
|
} else {
|
|
snprintf(str, size, "%d", val);
|
|
}
|
|
}
|
|
|
|
static void hex2str(int val, char *str, size_t size)
|
|
{
|
|
if (val == 0) {
|
|
snprintf(str, size, "*");
|
|
} else {
|
|
snprintf(str, size, "%04x", val);
|
|
}
|
|
}
|
|
|
|
void usb_host_info(Monitor *mon)
|
|
{
|
|
struct USBAutoFilter *f;
|
|
struct USBHostDevice *s;
|
|
|
|
usb_host_scan(mon, usb_host_info_device);
|
|
|
|
if (QTAILQ_EMPTY(&hostdevs)) {
|
|
return;
|
|
}
|
|
|
|
monitor_printf(mon, " Auto filters:\n");
|
|
QTAILQ_FOREACH(s, &hostdevs, next) {
|
|
char bus[10], addr[10], vid[10], pid[10];
|
|
f = &s->match;
|
|
dec2str(f->bus_num, bus, sizeof(bus));
|
|
dec2str(f->addr, addr, sizeof(addr));
|
|
hex2str(f->vendor_id, vid, sizeof(vid));
|
|
hex2str(f->product_id, pid, sizeof(pid));
|
|
monitor_printf(mon, " Bus %s, Addr %s, Port %s, ID %s:%s\n",
|
|
bus, addr, f->port ? f->port : "*", vid, pid);
|
|
}
|
|
}
|