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/*
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|---|---|
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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" |
| 34 |
#include "qemu-timer.h" |
| 35 |
#include "monitor.h" |
| 36 |
#include "sysemu.h" |
| 37 |
#include "trace.h" |
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|
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#include <dirent.h> |
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#include <sys/ioctl.h> |
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|
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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" |
| 45 |
|
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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; |
| 49 |
uint8_t bRequest; |
| 50 |
uint16_t wValue; |
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uint16_t wIndex; |
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uint16_t wLength; |
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uint32_t timeout; |
| 54 |
void *data;
|
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}; |
| 56 |
|
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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); |
| 60 |
|
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//#define DEBUG
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|
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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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|
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#define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
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|
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#define USBPROCBUS_PATH "/proc/bus/usb" |
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#define PRODUCT_NAME_SZ 32 |
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#define MAX_ENDPOINTS 15 |
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#define MAX_PORTLEN 16 |
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#define USBDEVBUS_PATH "/dev/bus/usb" |
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#define USBSYSBUS_PATH "/sys/bus/usb" |
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|
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static char *usb_host_device_path; |
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|
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#define USB_FS_NONE 0 |
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#define USB_FS_PROC 1 |
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#define USB_FS_DEV 2 |
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#define USB_FS_SYS 3 |
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|
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static int usb_fs_type; |
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|
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/* endpoint association data */
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#define ISO_FRAME_DESC_PER_URB 32 |
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#define INVALID_EP_TYPE 255 |
| 90 |
|
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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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|
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typedef struct AsyncURB AsyncURB; |
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|
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struct endp_data {
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uint8_t type; |
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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 max_packet_size;
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int inflight;
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}; |
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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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|
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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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|
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uint8_t descr[8192];
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int descr_len;
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int configuration;
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int ninterfaces;
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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[MAX_ENDPOINTS];
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struct endp_data ep_out[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 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 <= 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 get_endp(s, pid, ep)->type == USBDEVFS_URB_TYPE_ISO;
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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 get_endp(s, pid, ep)->type != INVALID_EP_TYPE;
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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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|
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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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|
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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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|
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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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|
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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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|
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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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static void set_max_packet_size(USBHostDevice *s, int pid, int ep, |
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uint8_t *descriptor) |
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{
|
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int raw = descriptor[4] + (descriptor[5] << 8); |
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int size, microframes;
|
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|
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size = raw & 0x7ff;
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switch ((raw >> 11) & 3) { |
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case 1: microframes = 2; break; |
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case 2: microframes = 3; break; |
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default: microframes = 1; break; |
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} |
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get_endp(s, pid, ep)->max_packet_size = size * microframes; |
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} |
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|
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static int get_max_packet_size(USBHostDevice *s, int pid, int ep) |
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{
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return get_endp(s, pid, ep)->max_packet_size;
|
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} |
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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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|
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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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|
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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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|
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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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} |
| 301 |
|
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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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|
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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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|
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while (1) { |
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USBPacket *p; |
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|
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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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|
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perror("USBDEVFS_REAPURBNDELAY");
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return;
|
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} |
| 336 |
|
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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); |
| 339 |
|
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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; |
| 347 |
if (aurb->urb.status == -EPIPE) {
|
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set_halt(s, pid, ep); |
| 349 |
} |
| 350 |
aurb->iso_frame_idx = 0;
|
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urbs++; |
| 352 |
inflight = change_iso_inflight(s, pid, ep, -1);
|
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if (inflight == 0 && is_iso_started(s, pid, ep)) { |
| 354 |
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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|
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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, |
| 361 |
aurb->urb.actual_length, aurb->more); |
| 362 |
|
| 363 |
if (p) {
|
| 364 |
switch (aurb->urb.status) {
|
| 365 |
case 0: |
| 366 |
p->result += aurb->urb.actual_length; |
| 367 |
break;
|
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|
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case -EPIPE:
|
| 370 |
set_halt(s, p->pid, p->devep); |
| 371 |
p->result = USB_RET_STALL; |
| 372 |
break;
|
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|
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default:
|
| 375 |
p->result = USB_RET_NAK; |
| 376 |
break;
|
| 377 |
} |
| 378 |
|
| 379 |
if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
|
| 380 |
trace_usb_host_req_complete(s->bus_num, s->addr, p->result); |
| 381 |
usb_generic_async_ctrl_complete(&s->dev, p); |
| 382 |
} else if (!aurb->more) { |
| 383 |
trace_usb_host_req_complete(s->bus_num, s->addr, p->result); |
| 384 |
usb_packet_complete(&s->dev, p); |
| 385 |
} |
| 386 |
} |
| 387 |
|
| 388 |
async_free(aurb); |
| 389 |
} |
| 390 |
} |
| 391 |
|
| 392 |
static void usb_host_async_cancel(USBDevice *dev, USBPacket *p) |
| 393 |
{
|
| 394 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 395 |
AsyncURB *aurb; |
| 396 |
|
| 397 |
QLIST_FOREACH(aurb, &s->aurbs, next) {
|
| 398 |
if (p != aurb->packet) {
|
| 399 |
continue;
|
| 400 |
} |
| 401 |
|
| 402 |
DPRINTF("husb: async cancel: packet %p, aurb %p\n", p, aurb);
|
| 403 |
|
| 404 |
/* Mark it as dead (see async_complete above) */
|
| 405 |
aurb->packet = NULL;
|
| 406 |
|
| 407 |
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
|
| 408 |
if (r < 0) { |
| 409 |
DPRINTF("husb: async. discard urb failed errno %d\n", errno);
|
| 410 |
} |
| 411 |
} |
| 412 |
} |
| 413 |
|
| 414 |
static int usb_host_claim_port(USBHostDevice *s) |
| 415 |
{
|
| 416 |
#ifdef USBDEVFS_CLAIM_PORT
|
| 417 |
char *h, hub_name[64], line[1024]; |
| 418 |
int hub_addr, portnr, ret;
|
| 419 |
|
| 420 |
snprintf(hub_name, sizeof(hub_name), "%d-%s", |
| 421 |
s->match.bus_num, s->match.port); |
| 422 |
|
| 423 |
/* try strip off last ".$portnr" to get hub */
|
| 424 |
h = strrchr(hub_name, '.');
|
| 425 |
if (h != NULL) { |
| 426 |
portnr = atoi(h+1);
|
| 427 |
*h = '\0';
|
| 428 |
} else {
|
| 429 |
/* no dot in there -> it is the root hub */
|
| 430 |
snprintf(hub_name, sizeof(hub_name), "usb%d", |
| 431 |
s->match.bus_num); |
| 432 |
portnr = atoi(s->match.port); |
| 433 |
} |
| 434 |
|
| 435 |
if (!usb_host_read_file(line, sizeof(line), "devnum", |
| 436 |
hub_name)) {
|
| 437 |
return -1; |
| 438 |
} |
| 439 |
if (sscanf(line, "%d", &hub_addr) != 1) { |
| 440 |
return -1; |
| 441 |
} |
| 442 |
|
| 443 |
if (!usb_host_device_path) {
|
| 444 |
return -1; |
| 445 |
} |
| 446 |
snprintf(line, sizeof(line), "%s/%03d/%03d", |
| 447 |
usb_host_device_path, s->match.bus_num, hub_addr); |
| 448 |
s->hub_fd = open(line, O_RDWR | O_NONBLOCK); |
| 449 |
if (s->hub_fd < 0) { |
| 450 |
return -1; |
| 451 |
} |
| 452 |
|
| 453 |
ret = ioctl(s->hub_fd, USBDEVFS_CLAIM_PORT, &portnr); |
| 454 |
if (ret < 0) { |
| 455 |
close(s->hub_fd); |
| 456 |
s->hub_fd = -1;
|
| 457 |
return -1; |
| 458 |
} |
| 459 |
|
| 460 |
trace_usb_host_claim_port(s->match.bus_num, hub_addr, portnr); |
| 461 |
return 0; |
| 462 |
#else
|
| 463 |
return -1; |
| 464 |
#endif
|
| 465 |
} |
| 466 |
|
| 467 |
static int usb_host_disconnect_ifaces(USBHostDevice *dev, int nb_interfaces) |
| 468 |
{
|
| 469 |
/* earlier Linux 2.4 do not support that */
|
| 470 |
#ifdef USBDEVFS_DISCONNECT
|
| 471 |
struct usbdevfs_ioctl ctrl;
|
| 472 |
int ret, interface;
|
| 473 |
|
| 474 |
for (interface = 0; interface < nb_interfaces; interface++) { |
| 475 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
| 476 |
ctrl.ifno = interface; |
| 477 |
ctrl.data = 0;
|
| 478 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
| 479 |
if (ret < 0 && errno != ENODATA) { |
| 480 |
perror("USBDEVFS_DISCONNECT");
|
| 481 |
return -1; |
| 482 |
} |
| 483 |
} |
| 484 |
#endif
|
| 485 |
return 0; |
| 486 |
} |
| 487 |
|
| 488 |
static int usb_linux_get_num_interfaces(USBHostDevice *s) |
| 489 |
{
|
| 490 |
char device_name[64], line[1024]; |
| 491 |
int num_interfaces = 0; |
| 492 |
|
| 493 |
if (usb_fs_type != USB_FS_SYS) {
|
| 494 |
return -1; |
| 495 |
} |
| 496 |
|
| 497 |
sprintf(device_name, "%d-%s", s->bus_num, s->port);
|
| 498 |
if (!usb_host_read_file(line, sizeof(line), "bNumInterfaces", |
| 499 |
device_name)) {
|
| 500 |
return -1; |
| 501 |
} |
| 502 |
if (sscanf(line, "%d", &num_interfaces) != 1) { |
| 503 |
return -1; |
| 504 |
} |
| 505 |
return num_interfaces;
|
| 506 |
} |
| 507 |
|
| 508 |
static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
| 509 |
{
|
| 510 |
const char *op = NULL; |
| 511 |
int dev_descr_len, config_descr_len;
|
| 512 |
int interface, nb_interfaces;
|
| 513 |
int ret, i;
|
| 514 |
|
| 515 |
if (configuration == 0) { /* address state - ignore */ |
| 516 |
dev->ninterfaces = 0;
|
| 517 |
dev->configuration = 0;
|
| 518 |
return 1; |
| 519 |
} |
| 520 |
|
| 521 |
DPRINTF("husb: claiming interfaces. config %d\n", configuration);
|
| 522 |
|
| 523 |
i = 0;
|
| 524 |
dev_descr_len = dev->descr[0];
|
| 525 |
if (dev_descr_len > dev->descr_len) {
|
| 526 |
fprintf(stderr, "husb: update iface failed. descr too short\n");
|
| 527 |
return 0; |
| 528 |
} |
| 529 |
|
| 530 |
i += dev_descr_len; |
| 531 |
while (i < dev->descr_len) {
|
| 532 |
DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
|
| 533 |
i, dev->descr_len, |
| 534 |
dev->descr[i], dev->descr[i+1]);
|
| 535 |
|
| 536 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
| 537 |
i += dev->descr[i]; |
| 538 |
continue;
|
| 539 |
} |
| 540 |
config_descr_len = dev->descr[i]; |
| 541 |
|
| 542 |
DPRINTF("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
| 543 |
|
| 544 |
if (configuration == dev->descr[i + 5]) { |
| 545 |
configuration = dev->descr[i + 5];
|
| 546 |
break;
|
| 547 |
} |
| 548 |
|
| 549 |
i += config_descr_len; |
| 550 |
} |
| 551 |
|
| 552 |
if (i >= dev->descr_len) {
|
| 553 |
fprintf(stderr, |
| 554 |
"husb: update iface failed. no matching configuration\n");
|
| 555 |
return 0; |
| 556 |
} |
| 557 |
nb_interfaces = dev->descr[i + 4];
|
| 558 |
|
| 559 |
if (usb_host_disconnect_ifaces(dev, nb_interfaces) < 0) { |
| 560 |
goto fail;
|
| 561 |
} |
| 562 |
|
| 563 |
/* XXX: only grab if all interfaces are free */
|
| 564 |
for (interface = 0; interface < nb_interfaces; interface++) { |
| 565 |
op = "USBDEVFS_CLAIMINTERFACE";
|
| 566 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
| 567 |
if (ret < 0) { |
| 568 |
goto fail;
|
| 569 |
} |
| 570 |
} |
| 571 |
|
| 572 |
trace_usb_host_claim_interfaces(dev->bus_num, dev->addr, |
| 573 |
nb_interfaces, configuration); |
| 574 |
|
| 575 |
dev->ninterfaces = nb_interfaces; |
| 576 |
dev->configuration = configuration; |
| 577 |
return 1; |
| 578 |
|
| 579 |
fail:
|
| 580 |
if (errno == ENODEV) {
|
| 581 |
do_disconnect(dev); |
| 582 |
} |
| 583 |
perror(op); |
| 584 |
return 0; |
| 585 |
} |
| 586 |
|
| 587 |
static int usb_host_release_interfaces(USBHostDevice *s) |
| 588 |
{
|
| 589 |
int ret, i;
|
| 590 |
|
| 591 |
trace_usb_host_release_interfaces(s->bus_num, s->addr); |
| 592 |
|
| 593 |
for (i = 0; i < s->ninterfaces; i++) { |
| 594 |
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
| 595 |
if (ret < 0) { |
| 596 |
perror("USBDEVFS_RELEASEINTERFACE");
|
| 597 |
return 0; |
| 598 |
} |
| 599 |
} |
| 600 |
return 1; |
| 601 |
} |
| 602 |
|
| 603 |
static void usb_host_handle_reset(USBDevice *dev) |
| 604 |
{
|
| 605 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 606 |
|
| 607 |
trace_usb_host_reset(s->bus_num, s->addr); |
| 608 |
|
| 609 |
ioctl(s->fd, USBDEVFS_RESET); |
| 610 |
|
| 611 |
usb_host_claim_interfaces(s, 0);
|
| 612 |
usb_linux_update_endp_table(s); |
| 613 |
} |
| 614 |
|
| 615 |
static void usb_host_handle_destroy(USBDevice *dev) |
| 616 |
{
|
| 617 |
USBHostDevice *s = (USBHostDevice *)dev; |
| 618 |
|
| 619 |
usb_host_close(s); |
| 620 |
if (s->hub_fd != -1) { |
| 621 |
close(s->hub_fd); |
| 622 |
} |
| 623 |
QTAILQ_REMOVE(&hostdevs, s, next); |
| 624 |
qemu_remove_exit_notifier(&s->exit); |
| 625 |
} |
| 626 |
|
| 627 |
/* iso data is special, we need to keep enough urbs in flight to make sure
|
| 628 |
that the controller never runs out of them, otherwise the device will
|
| 629 |
likely suffer a buffer underrun / overrun. */
|
| 630 |
static AsyncURB *usb_host_alloc_iso(USBHostDevice *s, int pid, uint8_t ep) |
| 631 |
{
|
| 632 |
AsyncURB *aurb; |
| 633 |
int i, j, len = get_max_packet_size(s, pid, ep);
|
| 634 |
|
| 635 |
aurb = g_malloc0(s->iso_urb_count * sizeof(*aurb));
|
| 636 |
for (i = 0; i < s->iso_urb_count; i++) { |
| 637 |
aurb[i].urb.endpoint = ep; |
| 638 |
aurb[i].urb.buffer_length = ISO_FRAME_DESC_PER_URB * len; |
| 639 |
aurb[i].urb.buffer = g_malloc(aurb[i].urb.buffer_length); |
| 640 |
aurb[i].urb.type = USBDEVFS_URB_TYPE_ISO; |
| 641 |
aurb[i].urb.flags = USBDEVFS_URB_ISO_ASAP; |
| 642 |
aurb[i].urb.number_of_packets = ISO_FRAME_DESC_PER_URB; |
| 643 |
for (j = 0 ; j < ISO_FRAME_DESC_PER_URB; j++) |
| 644 |
aurb[i].urb.iso_frame_desc[j].length = len; |
| 645 |
if (pid == USB_TOKEN_IN) {
|
| 646 |
aurb[i].urb.endpoint |= 0x80;
|
| 647 |
/* Mark as fully consumed (idle) */
|
| 648 |
aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB; |
| 649 |
} |
| 650 |
} |
| 651 |
set_iso_urb(s, pid, ep, aurb); |
| 652 |
|
| 653 |
return aurb;
|
| 654 |
} |
| 655 |
|
| 656 |
static void usb_host_stop_n_free_iso(USBHostDevice *s, int pid, uint8_t ep) |
| 657 |
{
|
| 658 |
AsyncURB *aurb; |
| 659 |
int i, ret, killed = 0, free = 1; |
| 660 |
|
| 661 |
aurb = get_iso_urb(s, pid, ep); |
| 662 |
if (!aurb) {
|
| 663 |
return;
|
| 664 |
} |
| 665 |
|
| 666 |
for (i = 0; i < s->iso_urb_count; i++) { |
| 667 |
/* in flight? */
|
| 668 |
if (aurb[i].iso_frame_idx == -1) { |
| 669 |
ret = ioctl(s->fd, USBDEVFS_DISCARDURB, &aurb[i]); |
| 670 |
if (ret < 0) { |
| 671 |
perror("USBDEVFS_DISCARDURB");
|
| 672 |
free = 0;
|
| 673 |
continue;
|
| 674 |
} |
| 675 |
killed++; |
| 676 |
} |
| 677 |
} |
| 678 |
|
| 679 |
/* Make sure any urbs we've killed are reaped before we free them */
|
| 680 |
if (killed) {
|
| 681 |
async_complete(s); |
| 682 |
} |
| 683 |
|
| 684 |
for (i = 0; i < s->iso_urb_count; i++) { |
| 685 |
g_free(aurb[i].urb.buffer); |
| 686 |
} |
| 687 |
|
| 688 |
if (free)
|
| 689 |
g_free(aurb); |
| 690 |
else
|
| 691 |
printf("husb: leaking iso urbs because of discard failure\n");
|
| 692 |
set_iso_urb(s, pid, ep, NULL);
|
| 693 |
set_iso_urb_idx(s, pid, ep, 0);
|
| 694 |
clear_iso_started(s, pid, ep); |
| 695 |
} |
| 696 |
|
| 697 |
static int urb_status_to_usb_ret(int status) |
| 698 |
{
|
| 699 |
switch (status) {
|
| 700 |
case -EPIPE:
|
| 701 |
return USB_RET_STALL;
|
| 702 |
default:
|
| 703 |
return USB_RET_NAK;
|
| 704 |
} |
| 705 |
} |
| 706 |
|
| 707 |
static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p, int in) |
| 708 |
{
|
| 709 |
AsyncURB *aurb; |
| 710 |
int i, j, ret, max_packet_size, offset, len = 0; |
| 711 |
uint8_t *buf; |
| 712 |
|
| 713 |
max_packet_size = get_max_packet_size(s, p->pid, p->devep); |
| 714 |
if (max_packet_size == 0) |
| 715 |
return USB_RET_NAK;
|
| 716 |
|
| 717 |
aurb = get_iso_urb(s, p->pid, p->devep); |
| 718 |
if (!aurb) {
|
| 719 |
aurb = usb_host_alloc_iso(s, p->pid, p->devep); |
| 720 |
} |
| 721 |
|
| 722 |
i = get_iso_urb_idx(s, p->pid, p->devep); |
| 723 |
j = aurb[i].iso_frame_idx; |
| 724 |
if (j >= 0 && j < ISO_FRAME_DESC_PER_URB) { |
| 725 |
if (in) {
|
| 726 |
/* Check urb status */
|
| 727 |
if (aurb[i].urb.status) {
|
| 728 |
len = urb_status_to_usb_ret(aurb[i].urb.status); |
| 729 |
/* Move to the next urb */
|
| 730 |
aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB - 1;
|
| 731 |
/* Check frame status */
|
| 732 |
} else if (aurb[i].urb.iso_frame_desc[j].status) { |
| 733 |
len = urb_status_to_usb_ret( |
| 734 |
aurb[i].urb.iso_frame_desc[j].status); |
| 735 |
/* Check the frame fits */
|
| 736 |
} else if (aurb[i].urb.iso_frame_desc[j].actual_length |
| 737 |
> p->iov.size) {
|
| 738 |
printf("husb: received iso data is larger then packet\n");
|
| 739 |
len = USB_RET_NAK; |
| 740 |
/* All good copy data over */
|
| 741 |
} else {
|
| 742 |
len = aurb[i].urb.iso_frame_desc[j].actual_length; |
| 743 |
buf = aurb[i].urb.buffer + |
| 744 |
j * aurb[i].urb.iso_frame_desc[0].length;
|
| 745 |
usb_packet_copy(p, buf, len); |
| 746 |
} |
| 747 |
} else {
|
| 748 |
len = p->iov.size; |
| 749 |
offset = (j == 0) ? 0 : get_iso_buffer_used(s, p->pid, p->devep); |
| 750 |
|
| 751 |
/* Check the frame fits */
|
| 752 |
if (len > max_packet_size) {
|
| 753 |
printf("husb: send iso data is larger then max packet size\n");
|
| 754 |
return USB_RET_NAK;
|
| 755 |
} |
| 756 |
|
| 757 |
/* All good copy data over */
|
| 758 |
usb_packet_copy(p, aurb[i].urb.buffer + offset, len); |
| 759 |
aurb[i].urb.iso_frame_desc[j].length = len; |
| 760 |
offset += len; |
| 761 |
set_iso_buffer_used(s, p->pid, p->devep, offset); |
| 762 |
|
| 763 |
/* Start the stream once we have buffered enough data */
|
| 764 |
if (!is_iso_started(s, p->pid, p->devep) && i == 1 && j == 8) { |
| 765 |
set_iso_started(s, p->pid, p->devep); |
| 766 |
} |
| 767 |
} |
| 768 |
aurb[i].iso_frame_idx++; |
| 769 |
if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
|
| 770 |
i = (i + 1) % s->iso_urb_count;
|
| 771 |
set_iso_urb_idx(s, p->pid, p->devep, i); |
| 772 |
} |
| 773 |
} else {
|
| 774 |
if (in) {
|
| 775 |
set_iso_started(s, p->pid, p->devep); |
| 776 |
} else {
|
| 777 |
DPRINTF("hubs: iso out error no free buffer, dropping packet\n");
|
| 778 |
} |
| 779 |
} |
| 780 |
|
| 781 |
if (is_iso_started(s, p->pid, p->devep)) {
|
| 782 |
/* (Re)-submit all fully consumed / filled urbs */
|
| 783 |
for (i = 0; i < s->iso_urb_count; i++) { |
| 784 |
if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
|
| 785 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, &aurb[i]); |
| 786 |
if (ret < 0) { |
| 787 |
perror("USBDEVFS_SUBMITURB");
|
| 788 |
if (!in || len == 0) { |
| 789 |
switch(errno) {
|
| 790 |
case ETIMEDOUT:
|
| 791 |
len = USB_RET_NAK; |
| 792 |
break;
|
| 793 |
case EPIPE:
|
| 794 |
default:
|
| 795 |
len = USB_RET_STALL; |
| 796 |
} |
| 797 |
} |
| 798 |
break;
|
| 799 |
} |
| 800 |
aurb[i].iso_frame_idx = -1;
|
| 801 |
change_iso_inflight(s, p->pid, p->devep, 1);
|
| 802 |
} |
| 803 |
} |
| 804 |
} |
| 805 |
|
| 806 |
return len;
|
| 807 |
} |
| 808 |
|
| 809 |
static int usb_host_handle_data(USBDevice *dev, USBPacket *p) |
| 810 |
{
|
| 811 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 812 |
struct usbdevfs_urb *urb;
|
| 813 |
AsyncURB *aurb; |
| 814 |
int ret, rem, prem, v;
|
| 815 |
uint8_t *pbuf; |
| 816 |
uint8_t ep; |
| 817 |
|
| 818 |
trace_usb_host_req_data(s->bus_num, s->addr, |
| 819 |
p->pid == USB_TOKEN_IN, |
| 820 |
p->devep, p->iov.size); |
| 821 |
|
| 822 |
if (!is_valid(s, p->pid, p->devep)) {
|
| 823 |
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK); |
| 824 |
return USB_RET_NAK;
|
| 825 |
} |
| 826 |
|
| 827 |
if (p->pid == USB_TOKEN_IN) {
|
| 828 |
ep = p->devep | 0x80;
|
| 829 |
} else {
|
| 830 |
ep = p->devep; |
| 831 |
} |
| 832 |
|
| 833 |
if (is_halted(s, p->pid, p->devep)) {
|
| 834 |
unsigned int arg = ep; |
| 835 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &arg); |
| 836 |
if (ret < 0) { |
| 837 |
perror("USBDEVFS_CLEAR_HALT");
|
| 838 |
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK); |
| 839 |
return USB_RET_NAK;
|
| 840 |
} |
| 841 |
clear_halt(s, p->pid, p->devep); |
| 842 |
} |
| 843 |
|
| 844 |
if (is_isoc(s, p->pid, p->devep)) {
|
| 845 |
return usb_host_handle_iso_data(s, p, p->pid == USB_TOKEN_IN);
|
| 846 |
} |
| 847 |
|
| 848 |
v = 0;
|
| 849 |
prem = p->iov.iov[v].iov_len; |
| 850 |
pbuf = p->iov.iov[v].iov_base; |
| 851 |
rem = p->iov.size; |
| 852 |
while (rem) {
|
| 853 |
if (prem == 0) { |
| 854 |
v++; |
| 855 |
assert(v < p->iov.niov); |
| 856 |
prem = p->iov.iov[v].iov_len; |
| 857 |
pbuf = p->iov.iov[v].iov_base; |
| 858 |
assert(prem <= rem); |
| 859 |
} |
| 860 |
aurb = async_alloc(s); |
| 861 |
aurb->packet = p; |
| 862 |
|
| 863 |
urb = &aurb->urb; |
| 864 |
urb->endpoint = ep; |
| 865 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
| 866 |
urb->usercontext = s; |
| 867 |
urb->buffer = pbuf; |
| 868 |
urb->buffer_length = prem; |
| 869 |
|
| 870 |
if (urb->buffer_length > MAX_USBFS_BUFFER_SIZE) {
|
| 871 |
urb->buffer_length = MAX_USBFS_BUFFER_SIZE; |
| 872 |
} |
| 873 |
pbuf += urb->buffer_length; |
| 874 |
prem -= urb->buffer_length; |
| 875 |
rem -= urb->buffer_length; |
| 876 |
if (rem) {
|
| 877 |
aurb->more = 1;
|
| 878 |
} |
| 879 |
|
| 880 |
trace_usb_host_urb_submit(s->bus_num, s->addr, aurb, |
| 881 |
urb->buffer_length, aurb->more); |
| 882 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
| 883 |
|
| 884 |
DPRINTF("husb: data submit: ep 0x%x, len %u, more %d, packet %p, aurb %p\n",
|
| 885 |
urb->endpoint, urb->buffer_length, aurb->more, p, aurb); |
| 886 |
|
| 887 |
if (ret < 0) { |
| 888 |
perror("USBDEVFS_SUBMITURB");
|
| 889 |
async_free(aurb); |
| 890 |
|
| 891 |
switch(errno) {
|
| 892 |
case ETIMEDOUT:
|
| 893 |
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK); |
| 894 |
return USB_RET_NAK;
|
| 895 |
case EPIPE:
|
| 896 |
default:
|
| 897 |
trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_STALL); |
| 898 |
return USB_RET_STALL;
|
| 899 |
} |
| 900 |
} |
| 901 |
} |
| 902 |
|
| 903 |
return USB_RET_ASYNC;
|
| 904 |
} |
| 905 |
|
| 906 |
static int ctrl_error(void) |
| 907 |
{
|
| 908 |
if (errno == ETIMEDOUT) {
|
| 909 |
return USB_RET_NAK;
|
| 910 |
} else {
|
| 911 |
return USB_RET_STALL;
|
| 912 |
} |
| 913 |
} |
| 914 |
|
| 915 |
static int usb_host_set_address(USBHostDevice *s, int addr) |
| 916 |
{
|
| 917 |
trace_usb_host_set_address(s->bus_num, s->addr, addr); |
| 918 |
s->dev.addr = addr; |
| 919 |
return 0; |
| 920 |
} |
| 921 |
|
| 922 |
static int usb_host_set_config(USBHostDevice *s, int config) |
| 923 |
{
|
| 924 |
int ret, first = 1; |
| 925 |
|
| 926 |
trace_usb_host_set_config(s->bus_num, s->addr, config); |
| 927 |
|
| 928 |
usb_host_release_interfaces(s); |
| 929 |
|
| 930 |
again:
|
| 931 |
ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config); |
| 932 |
|
| 933 |
DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
| 934 |
|
| 935 |
if (ret < 0 && errno == EBUSY && first) { |
| 936 |
/* happens if usb device is in use by host drivers */
|
| 937 |
int count = usb_linux_get_num_interfaces(s);
|
| 938 |
if (count > 0) { |
| 939 |
DPRINTF("husb: busy -> disconnecting %d interfaces\n", count);
|
| 940 |
usb_host_disconnect_ifaces(s, count); |
| 941 |
first = 0;
|
| 942 |
goto again;
|
| 943 |
} |
| 944 |
} |
| 945 |
|
| 946 |
if (ret < 0) { |
| 947 |
return ctrl_error();
|
| 948 |
} |
| 949 |
usb_host_claim_interfaces(s, config); |
| 950 |
usb_linux_update_endp_table(s); |
| 951 |
return 0; |
| 952 |
} |
| 953 |
|
| 954 |
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
| 955 |
{
|
| 956 |
struct usbdevfs_setinterface si;
|
| 957 |
int i, ret;
|
| 958 |
|
| 959 |
trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); |
| 960 |
|
| 961 |
for (i = 1; i <= MAX_ENDPOINTS; i++) { |
| 962 |
if (is_isoc(s, USB_TOKEN_IN, i)) {
|
| 963 |
usb_host_stop_n_free_iso(s, USB_TOKEN_IN, i); |
| 964 |
} |
| 965 |
if (is_isoc(s, USB_TOKEN_OUT, i)) {
|
| 966 |
usb_host_stop_n_free_iso(s, USB_TOKEN_OUT, i); |
| 967 |
} |
| 968 |
} |
| 969 |
|
| 970 |
si.interface = iface; |
| 971 |
si.altsetting = alt; |
| 972 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
| 973 |
|
| 974 |
DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
| 975 |
iface, alt, ret, errno); |
| 976 |
|
| 977 |
if (ret < 0) { |
| 978 |
return ctrl_error();
|
| 979 |
} |
| 980 |
usb_linux_update_endp_table(s); |
| 981 |
return 0; |
| 982 |
} |
| 983 |
|
| 984 |
static int usb_host_handle_control(USBDevice *dev, USBPacket *p, |
| 985 |
int request, int value, int index, int length, uint8_t *data) |
| 986 |
{
|
| 987 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 988 |
struct usbdevfs_urb *urb;
|
| 989 |
AsyncURB *aurb; |
| 990 |
int ret;
|
| 991 |
|
| 992 |
/*
|
| 993 |
* Process certain standard device requests.
|
| 994 |
* These are infrequent and are processed synchronously.
|
| 995 |
*/
|
| 996 |
|
| 997 |
/* Note request is (bRequestType << 8) | bRequest */
|
| 998 |
trace_usb_host_req_control(s->bus_num, s->addr, request, value, index); |
| 999 |
|
| 1000 |
switch (request) {
|
| 1001 |
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
| 1002 |
return usb_host_set_address(s, value);
|
| 1003 |
|
| 1004 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
| 1005 |
return usb_host_set_config(s, value & 0xff); |
| 1006 |
|
| 1007 |
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
|
| 1008 |
return usb_host_set_interface(s, index, value);
|
| 1009 |
} |
| 1010 |
|
| 1011 |
/* The rest are asynchronous */
|
| 1012 |
|
| 1013 |
if (length > sizeof(dev->data_buf)) { |
| 1014 |
fprintf(stderr, "husb: ctrl buffer too small (%d > %zu)\n",
|
| 1015 |
length, sizeof(dev->data_buf));
|
| 1016 |
return USB_RET_STALL;
|
| 1017 |
} |
| 1018 |
|
| 1019 |
aurb = async_alloc(s); |
| 1020 |
aurb->packet = p; |
| 1021 |
|
| 1022 |
/*
|
| 1023 |
* Setup ctrl transfer.
|
| 1024 |
*
|
| 1025 |
* s->ctrl is laid out such that data buffer immediately follows
|
| 1026 |
* 'req' struct which is exactly what usbdevfs expects.
|
| 1027 |
*/
|
| 1028 |
urb = &aurb->urb; |
| 1029 |
|
| 1030 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
| 1031 |
urb->endpoint = p->devep; |
| 1032 |
|
| 1033 |
urb->buffer = &dev->setup_buf; |
| 1034 |
urb->buffer_length = length + 8;
|
| 1035 |
|
| 1036 |
urb->usercontext = s; |
| 1037 |
|
| 1038 |
trace_usb_host_urb_submit(s->bus_num, s->addr, aurb, |
| 1039 |
urb->buffer_length, aurb->more); |
| 1040 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
| 1041 |
|
| 1042 |
DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
| 1043 |
|
| 1044 |
if (ret < 0) { |
| 1045 |
DPRINTF("husb: submit failed. errno %d\n", errno);
|
| 1046 |
async_free(aurb); |
| 1047 |
|
| 1048 |
switch(errno) {
|
| 1049 |
case ETIMEDOUT:
|
| 1050 |
return USB_RET_NAK;
|
| 1051 |
case EPIPE:
|
| 1052 |
default:
|
| 1053 |
return USB_RET_STALL;
|
| 1054 |
} |
| 1055 |
} |
| 1056 |
|
| 1057 |
return USB_RET_ASYNC;
|
| 1058 |
} |
| 1059 |
|
| 1060 |
static uint8_t usb_linux_get_alt_setting(USBHostDevice *s,
|
| 1061 |
uint8_t configuration, uint8_t interface) |
| 1062 |
{
|
| 1063 |
uint8_t alt_setting; |
| 1064 |
struct usb_ctrltransfer ct;
|
| 1065 |
int ret;
|
| 1066 |
|
| 1067 |
if (usb_fs_type == USB_FS_SYS) {
|
| 1068 |
char device_name[64], line[1024]; |
| 1069 |
int alt_setting;
|
| 1070 |
|
| 1071 |
sprintf(device_name, "%d-%s:%d.%d", s->bus_num, s->port,
|
| 1072 |
(int)configuration, (int)interface); |
| 1073 |
|
| 1074 |
if (!usb_host_read_file(line, sizeof(line), "bAlternateSetting", |
| 1075 |
device_name)) {
|
| 1076 |
goto usbdevfs;
|
| 1077 |
} |
| 1078 |
if (sscanf(line, "%d", &alt_setting) != 1) { |
| 1079 |
goto usbdevfs;
|
| 1080 |
} |
| 1081 |
return alt_setting;
|
| 1082 |
} |
| 1083 |
|
| 1084 |
usbdevfs:
|
| 1085 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
| 1086 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
| 1087 |
ct.wValue = 0;
|
| 1088 |
ct.wIndex = interface; |
| 1089 |
ct.wLength = 1;
|
| 1090 |
ct.data = &alt_setting; |
| 1091 |
ct.timeout = 50;
|
| 1092 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
| 1093 |
if (ret < 0) { |
| 1094 |
/* Assume alt 0 on error */
|
| 1095 |
return 0; |
| 1096 |
} |
| 1097 |
|
| 1098 |
return alt_setting;
|
| 1099 |
} |
| 1100 |
|
| 1101 |
/* returns 1 on problem encountered or 0 for success */
|
| 1102 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
| 1103 |
{
|
| 1104 |
uint8_t *descriptors; |
| 1105 |
uint8_t devep, type, alt_interface; |
| 1106 |
int interface, length, i, ep, pid;
|
| 1107 |
struct endp_data *epd;
|
| 1108 |
|
| 1109 |
for (i = 0; i < MAX_ENDPOINTS; i++) { |
| 1110 |
s->ep_in[i].type = INVALID_EP_TYPE; |
| 1111 |
s->ep_out[i].type = INVALID_EP_TYPE; |
| 1112 |
} |
| 1113 |
|
| 1114 |
if (s->configuration == 0) { |
| 1115 |
/* not configured yet -- leave all endpoints disabled */
|
| 1116 |
return 0; |
| 1117 |
} |
| 1118 |
|
| 1119 |
/* get the desired configuration, interface, and endpoint descriptors
|
| 1120 |
* from device description */
|
| 1121 |
descriptors = &s->descr[18];
|
| 1122 |
length = s->descr_len - 18;
|
| 1123 |
i = 0;
|
| 1124 |
|
| 1125 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
| 1126 |
descriptors[i + 5] != s->configuration) {
|
| 1127 |
fprintf(stderr, "invalid descriptor data - configuration %d\n",
|
| 1128 |
s->configuration); |
| 1129 |
return 1; |
| 1130 |
} |
| 1131 |
i += descriptors[i]; |
| 1132 |
|
| 1133 |
while (i < length) {
|
| 1134 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
| 1135 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
| 1136 |
descriptors[i + 4] == 0)) { |
| 1137 |
i += descriptors[i]; |
| 1138 |
continue;
|
| 1139 |
} |
| 1140 |
|
| 1141 |
interface = descriptors[i + 2];
|
| 1142 |
alt_interface = usb_linux_get_alt_setting(s, s->configuration, |
| 1143 |
interface); |
| 1144 |
|
| 1145 |
/* the current interface descriptor is the active interface
|
| 1146 |
* and has endpoints */
|
| 1147 |
if (descriptors[i + 3] != alt_interface) { |
| 1148 |
i += descriptors[i]; |
| 1149 |
continue;
|
| 1150 |
} |
| 1151 |
|
| 1152 |
/* advance to the endpoints */
|
| 1153 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) { |
| 1154 |
i += descriptors[i]; |
| 1155 |
} |
| 1156 |
|
| 1157 |
if (i >= length)
|
| 1158 |
break;
|
| 1159 |
|
| 1160 |
while (i < length) {
|
| 1161 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) { |
| 1162 |
break;
|
| 1163 |
} |
| 1164 |
|
| 1165 |
devep = descriptors[i + 2];
|
| 1166 |
pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; |
| 1167 |
ep = devep & 0xf;
|
| 1168 |
if (ep == 0) { |
| 1169 |
fprintf(stderr, "usb-linux: invalid ep descriptor, ep == 0\n");
|
| 1170 |
return 1; |
| 1171 |
} |
| 1172 |
|
| 1173 |
switch (descriptors[i + 3] & 0x3) { |
| 1174 |
case 0x00: |
| 1175 |
type = USBDEVFS_URB_TYPE_CONTROL; |
| 1176 |
break;
|
| 1177 |
case 0x01: |
| 1178 |
type = USBDEVFS_URB_TYPE_ISO; |
| 1179 |
set_max_packet_size(s, pid, ep, descriptors + i); |
| 1180 |
break;
|
| 1181 |
case 0x02: |
| 1182 |
type = USBDEVFS_URB_TYPE_BULK; |
| 1183 |
break;
|
| 1184 |
case 0x03: |
| 1185 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
| 1186 |
break;
|
| 1187 |
default:
|
| 1188 |
DPRINTF("usb_host: malformed endpoint type\n");
|
| 1189 |
type = USBDEVFS_URB_TYPE_BULK; |
| 1190 |
} |
| 1191 |
epd = get_endp(s, pid, ep); |
| 1192 |
assert(epd->type == INVALID_EP_TYPE); |
| 1193 |
epd->type = type; |
| 1194 |
epd->halted = 0;
|
| 1195 |
|
| 1196 |
i += descriptors[i]; |
| 1197 |
} |
| 1198 |
} |
| 1199 |
return 0; |
| 1200 |
} |
| 1201 |
|
| 1202 |
/*
|
| 1203 |
* Check if we can safely redirect a usb2 device to a usb1 virtual controller,
|
| 1204 |
* this function assumes this is safe, if:
|
| 1205 |
* 1) There are no isoc endpoints
|
| 1206 |
* 2) There are no interrupt endpoints with a max_packet_size > 64
|
| 1207 |
* Note bulk endpoints with a max_packet_size > 64 in theory also are not
|
| 1208 |
* usb1 compatible, but in practice this seems to work fine.
|
| 1209 |
*/
|
| 1210 |
static int usb_linux_full_speed_compat(USBHostDevice *dev) |
| 1211 |
{
|
| 1212 |
int i, packet_size;
|
| 1213 |
|
| 1214 |
/*
|
| 1215 |
* usb_linux_update_endp_table only registers info about ep in the current
|
| 1216 |
* interface altsettings, so we need to parse the descriptors again.
|
| 1217 |
*/
|
| 1218 |
for (i = 0; (i + 5) < dev->descr_len; i += dev->descr[i]) { |
| 1219 |
if (dev->descr[i + 1] == USB_DT_ENDPOINT) { |
| 1220 |
switch (dev->descr[i + 3] & 0x3) { |
| 1221 |
case 0x00: /* CONTROL */ |
| 1222 |
break;
|
| 1223 |
case 0x01: /* ISO */ |
| 1224 |
return 0; |
| 1225 |
case 0x02: /* BULK */ |
| 1226 |
break;
|
| 1227 |
case 0x03: /* INTERRUPT */ |
| 1228 |
packet_size = dev->descr[i + 4] + (dev->descr[i + 5] << 8); |
| 1229 |
if (packet_size > 64) |
| 1230 |
return 0; |
| 1231 |
break;
|
| 1232 |
} |
| 1233 |
} |
| 1234 |
} |
| 1235 |
return 1; |
| 1236 |
} |
| 1237 |
|
| 1238 |
static int usb_host_open(USBHostDevice *dev, int bus_num, |
| 1239 |
int addr, const char *port, |
| 1240 |
const char *prod_name, int speed) |
| 1241 |
{
|
| 1242 |
int fd = -1, ret; |
| 1243 |
char buf[1024]; |
| 1244 |
|
| 1245 |
trace_usb_host_open_started(bus_num, addr); |
| 1246 |
|
| 1247 |
if (dev->fd != -1) { |
| 1248 |
goto fail;
|
| 1249 |
} |
| 1250 |
|
| 1251 |
if (!usb_host_device_path) {
|
| 1252 |
perror("husb: USB Host Device Path not set");
|
| 1253 |
goto fail;
|
| 1254 |
} |
| 1255 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
| 1256 |
bus_num, addr); |
| 1257 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
| 1258 |
if (fd < 0) { |
| 1259 |
perror(buf); |
| 1260 |
goto fail;
|
| 1261 |
} |
| 1262 |
DPRINTF("husb: opened %s\n", buf);
|
| 1263 |
|
| 1264 |
dev->bus_num = bus_num; |
| 1265 |
dev->addr = addr; |
| 1266 |
strcpy(dev->port, port); |
| 1267 |
dev->fd = fd; |
| 1268 |
|
| 1269 |
/* read the device description */
|
| 1270 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
| 1271 |
if (dev->descr_len <= 0) { |
| 1272 |
perror("husb: reading device data failed");
|
| 1273 |
goto fail;
|
| 1274 |
} |
| 1275 |
|
| 1276 |
#ifdef DEBUG
|
| 1277 |
{
|
| 1278 |
int x;
|
| 1279 |
printf("=== begin dumping device descriptor data ===\n");
|
| 1280 |
for (x = 0; x < dev->descr_len; x++) { |
| 1281 |
printf("%02x ", dev->descr[x]);
|
| 1282 |
} |
| 1283 |
printf("\n=== end dumping device descriptor data ===\n");
|
| 1284 |
} |
| 1285 |
#endif
|
| 1286 |
|
| 1287 |
|
| 1288 |
/* start unconfigured -- we'll wait for the guest to set a configuration */
|
| 1289 |
if (!usb_host_claim_interfaces(dev, 0)) { |
| 1290 |
goto fail;
|
| 1291 |
} |
| 1292 |
|
| 1293 |
ret = usb_linux_update_endp_table(dev); |
| 1294 |
if (ret) {
|
| 1295 |
goto fail;
|
| 1296 |
} |
| 1297 |
|
| 1298 |
if (speed == -1) { |
| 1299 |
struct usbdevfs_connectinfo ci;
|
| 1300 |
|
| 1301 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
| 1302 |
if (ret < 0) { |
| 1303 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
| 1304 |
goto fail;
|
| 1305 |
} |
| 1306 |
|
| 1307 |
if (ci.slow) {
|
| 1308 |
speed = USB_SPEED_LOW; |
| 1309 |
} else {
|
| 1310 |
speed = USB_SPEED_HIGH; |
| 1311 |
} |
| 1312 |
} |
| 1313 |
dev->dev.speed = speed; |
| 1314 |
dev->dev.speedmask = (1 << speed);
|
| 1315 |
if (dev->dev.speed == USB_SPEED_HIGH && usb_linux_full_speed_compat(dev)) {
|
| 1316 |
dev->dev.speedmask |= USB_SPEED_MASK_FULL; |
| 1317 |
} |
| 1318 |
|
| 1319 |
trace_usb_host_open_success(bus_num, addr); |
| 1320 |
|
| 1321 |
if (!prod_name || prod_name[0] == '\0') { |
| 1322 |
snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
| 1323 |
"host:%d.%d", bus_num, addr);
|
| 1324 |
} else {
|
| 1325 |
pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
| 1326 |
prod_name); |
| 1327 |
} |
| 1328 |
|
| 1329 |
ret = usb_device_attach(&dev->dev); |
| 1330 |
if (ret) {
|
| 1331 |
goto fail;
|
| 1332 |
} |
| 1333 |
|
| 1334 |
/* USB devio uses 'write' flag to check for async completions */
|
| 1335 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
| 1336 |
|
| 1337 |
return 0; |
| 1338 |
|
| 1339 |
fail:
|
| 1340 |
trace_usb_host_open_failure(bus_num, addr); |
| 1341 |
if (dev->fd != -1) { |
| 1342 |
close(dev->fd); |
| 1343 |
dev->fd = -1;
|
| 1344 |
} |
| 1345 |
return -1; |
| 1346 |
} |
| 1347 |
|
| 1348 |
static int usb_host_close(USBHostDevice *dev) |
| 1349 |
{
|
| 1350 |
int i;
|
| 1351 |
|
| 1352 |
if (dev->fd == -1) { |
| 1353 |
return -1; |
| 1354 |
} |
| 1355 |
|
| 1356 |
trace_usb_host_close(dev->bus_num, dev->addr); |
| 1357 |
|
| 1358 |
qemu_set_fd_handler(dev->fd, NULL, NULL, NULL); |
| 1359 |
dev->closing = 1;
|
| 1360 |
for (i = 1; i <= MAX_ENDPOINTS; i++) { |
| 1361 |
if (is_isoc(dev, USB_TOKEN_IN, i)) {
|
| 1362 |
usb_host_stop_n_free_iso(dev, USB_TOKEN_IN, i); |
| 1363 |
} |
| 1364 |
if (is_isoc(dev, USB_TOKEN_OUT, i)) {
|
| 1365 |
usb_host_stop_n_free_iso(dev, USB_TOKEN_OUT, i); |
| 1366 |
} |
| 1367 |
} |
| 1368 |
async_complete(dev); |
| 1369 |
dev->closing = 0;
|
| 1370 |
if (dev->dev.attached) {
|
| 1371 |
usb_device_detach(&dev->dev); |
| 1372 |
} |
| 1373 |
ioctl(dev->fd, USBDEVFS_RESET); |
| 1374 |
close(dev->fd); |
| 1375 |
dev->fd = -1;
|
| 1376 |
return 0; |
| 1377 |
} |
| 1378 |
|
| 1379 |
static void usb_host_exit_notifier(struct Notifier *n, void *data) |
| 1380 |
{
|
| 1381 |
USBHostDevice *s = container_of(n, USBHostDevice, exit); |
| 1382 |
|
| 1383 |
if (s->fd != -1) { |
| 1384 |
ioctl(s->fd, USBDEVFS_RESET); |
| 1385 |
} |
| 1386 |
} |
| 1387 |
|
| 1388 |
static int usb_host_initfn(USBDevice *dev) |
| 1389 |
{
|
| 1390 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 1391 |
|
| 1392 |
dev->auto_attach = 0;
|
| 1393 |
s->fd = -1;
|
| 1394 |
s->hub_fd = -1;
|
| 1395 |
|
| 1396 |
QTAILQ_INSERT_TAIL(&hostdevs, s, next); |
| 1397 |
s->exit.notify = usb_host_exit_notifier; |
| 1398 |
qemu_add_exit_notifier(&s->exit); |
| 1399 |
usb_host_auto_check(NULL);
|
| 1400 |
|
| 1401 |
if (s->match.bus_num != 0 && s->match.port != NULL) { |
| 1402 |
usb_host_claim_port(s); |
| 1403 |
} |
| 1404 |
return 0; |
| 1405 |
} |
| 1406 |
|
| 1407 |
static const VMStateDescription vmstate_usb_host = { |
| 1408 |
.name = "usb-host",
|
| 1409 |
.unmigratable = 1,
|
| 1410 |
}; |
| 1411 |
|
| 1412 |
static struct USBDeviceInfo usb_host_dev_info = { |
| 1413 |
.product_desc = "USB Host Device",
|
| 1414 |
.qdev.name = "usb-host",
|
| 1415 |
.qdev.size = sizeof(USBHostDevice),
|
| 1416 |
.qdev.vmsd = &vmstate_usb_host, |
| 1417 |
.init = usb_host_initfn, |
| 1418 |
.handle_packet = usb_generic_handle_packet, |
| 1419 |
.cancel_packet = usb_host_async_cancel, |
| 1420 |
.handle_data = usb_host_handle_data, |
| 1421 |
.handle_control = usb_host_handle_control, |
| 1422 |
.handle_reset = usb_host_handle_reset, |
| 1423 |
.handle_destroy = usb_host_handle_destroy, |
| 1424 |
.usbdevice_name = "host",
|
| 1425 |
.usbdevice_init = usb_host_device_open, |
| 1426 |
.qdev.props = (Property[]) {
|
| 1427 |
DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), |
| 1428 |
DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), |
| 1429 |
DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
|
| 1430 |
DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), |
| 1431 |
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), |
| 1432 |
DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), |
| 1433 |
DEFINE_PROP_END_OF_LIST(), |
| 1434 |
}, |
| 1435 |
}; |
| 1436 |
|
| 1437 |
static void usb_host_register_devices(void) |
| 1438 |
{
|
| 1439 |
usb_qdev_register(&usb_host_dev_info); |
| 1440 |
} |
| 1441 |
device_init(usb_host_register_devices) |
| 1442 |
|
| 1443 |
USBDevice *usb_host_device_open(const char *devname) |
| 1444 |
{
|
| 1445 |
struct USBAutoFilter filter;
|
| 1446 |
USBDevice *dev; |
| 1447 |
char *p;
|
| 1448 |
|
| 1449 |
dev = usb_create(NULL /* FIXME */, "usb-host"); |
| 1450 |
|
| 1451 |
if (strstr(devname, "auto:")) { |
| 1452 |
if (parse_filter(devname, &filter) < 0) { |
| 1453 |
goto fail;
|
| 1454 |
} |
| 1455 |
} else {
|
| 1456 |
if ((p = strchr(devname, '.'))) { |
| 1457 |
filter.bus_num = strtoul(devname, NULL, 0); |
| 1458 |
filter.addr = strtoul(p + 1, NULL, 0); |
| 1459 |
filter.vendor_id = 0;
|
| 1460 |
filter.product_id = 0;
|
| 1461 |
} else if ((p = strchr(devname, ':'))) { |
| 1462 |
filter.bus_num = 0;
|
| 1463 |
filter.addr = 0;
|
| 1464 |
filter.vendor_id = strtoul(devname, NULL, 16); |
| 1465 |
filter.product_id = strtoul(p + 1, NULL, 16); |
| 1466 |
} else {
|
| 1467 |
goto fail;
|
| 1468 |
} |
| 1469 |
} |
| 1470 |
|
| 1471 |
qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
|
| 1472 |
qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
|
| 1473 |
qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
|
| 1474 |
qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
|
| 1475 |
qdev_init_nofail(&dev->qdev); |
| 1476 |
return dev;
|
| 1477 |
|
| 1478 |
fail:
|
| 1479 |
qdev_free(&dev->qdev); |
| 1480 |
return NULL; |
| 1481 |
} |
| 1482 |
|
| 1483 |
int usb_host_device_close(const char *devname) |
| 1484 |
{
|
| 1485 |
#if 0
|
| 1486 |
char product_name[PRODUCT_NAME_SZ];
|
| 1487 |
int bus_num, addr;
|
| 1488 |
USBHostDevice *s;
|
| 1489 |
|
| 1490 |
if (strstr(devname, "auto:")) {
|
| 1491 |
return usb_host_auto_del(devname);
|
| 1492 |
}
|
| 1493 |
if (usb_host_find_device(&bus_num, &addr, product_name,
|
| 1494 |
sizeof(product_name), devname) < 0) {
|
| 1495 |
return -1;
|
| 1496 |
}
|
| 1497 |
s = hostdev_find(bus_num, addr);
|
| 1498 |
if (s) {
|
| 1499 |
usb_device_delete_addr(s->bus_num, s->dev.addr);
|
| 1500 |
return 0;
|
| 1501 |
}
|
| 1502 |
#endif
|
| 1503 |
|
| 1504 |
return -1; |
| 1505 |
} |
| 1506 |
|
| 1507 |
static int get_tag_value(char *buf, int buf_size, |
| 1508 |
const char *str, const char *tag, |
| 1509 |
const char *stopchars) |
| 1510 |
{
|
| 1511 |
const char *p; |
| 1512 |
char *q;
|
| 1513 |
p = strstr(str, tag); |
| 1514 |
if (!p) {
|
| 1515 |
return -1; |
| 1516 |
} |
| 1517 |
p += strlen(tag); |
| 1518 |
while (qemu_isspace(*p)) {
|
| 1519 |
p++; |
| 1520 |
} |
| 1521 |
q = buf; |
| 1522 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
| 1523 |
if ((q - buf) < (buf_size - 1)) { |
| 1524 |
*q++ = *p; |
| 1525 |
} |
| 1526 |
p++; |
| 1527 |
} |
| 1528 |
*q = '\0';
|
| 1529 |
return q - buf;
|
| 1530 |
} |
| 1531 |
|
| 1532 |
/*
|
| 1533 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
| 1534 |
* host's USB devices. This is legacy support since many distributions
|
| 1535 |
* are moving to /sys/bus/usb
|
| 1536 |
*/
|
| 1537 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
| 1538 |
{
|
| 1539 |
FILE *f = NULL;
|
| 1540 |
char line[1024]; |
| 1541 |
char buf[1024]; |
| 1542 |
int bus_num, addr, speed, device_count;
|
| 1543 |
int class_id, product_id, vendor_id, port;
|
| 1544 |
char product_name[512]; |
| 1545 |
int ret = 0; |
| 1546 |
|
| 1547 |
if (!usb_host_device_path) {
|
| 1548 |
perror("husb: USB Host Device Path not set");
|
| 1549 |
goto the_end;
|
| 1550 |
} |
| 1551 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
| 1552 |
f = fopen(line, "r");
|
| 1553 |
if (!f) {
|
| 1554 |
perror("husb: cannot open devices file");
|
| 1555 |
goto the_end;
|
| 1556 |
} |
| 1557 |
|
| 1558 |
device_count = 0;
|
| 1559 |
bus_num = addr = class_id = product_id = vendor_id = port = 0;
|
| 1560 |
speed = -1; /* Can't get the speed from /[proc|dev]/bus/usb/devices */ |
| 1561 |
for(;;) {
|
| 1562 |
if (fgets(line, sizeof(line), f) == NULL) { |
| 1563 |
break;
|
| 1564 |
} |
| 1565 |
if (strlen(line) > 0) { |
| 1566 |
line[strlen(line) - 1] = '\0'; |
| 1567 |
} |
| 1568 |
if (line[0] == 'T' && line[1] == ':') { |
| 1569 |
if (device_count && (vendor_id || product_id)) {
|
| 1570 |
/* New device. Add the previously discovered device. */
|
| 1571 |
ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
|
| 1572 |
product_id, product_name, speed); |
| 1573 |
if (ret) {
|
| 1574 |
goto the_end;
|
| 1575 |
} |
| 1576 |
} |
| 1577 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) { |
| 1578 |
goto fail;
|
| 1579 |
} |
| 1580 |
bus_num = atoi(buf); |
| 1581 |
if (get_tag_value(buf, sizeof(buf), line, "Port=", " ") < 0) { |
| 1582 |
goto fail;
|
| 1583 |
} |
| 1584 |
port = atoi(buf); |
| 1585 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) { |
| 1586 |
goto fail;
|
| 1587 |
} |
| 1588 |
addr = atoi(buf); |
| 1589 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) { |
| 1590 |
goto fail;
|
| 1591 |
} |
| 1592 |
if (!strcmp(buf, "5000")) { |
| 1593 |
speed = USB_SPEED_SUPER; |
| 1594 |
} else if (!strcmp(buf, "480")) { |
| 1595 |
speed = USB_SPEED_HIGH; |
| 1596 |
} else if (!strcmp(buf, "1.5")) { |
| 1597 |
speed = USB_SPEED_LOW; |
| 1598 |
} else {
|
| 1599 |
speed = USB_SPEED_FULL; |
| 1600 |
} |
| 1601 |
product_name[0] = '\0'; |
| 1602 |
class_id = 0xff;
|
| 1603 |
device_count++; |
| 1604 |
product_id = 0;
|
| 1605 |
vendor_id = 0;
|
| 1606 |
} else if (line[0] == 'P' && line[1] == ':') { |
| 1607 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) { |
| 1608 |
goto fail;
|
| 1609 |
} |
| 1610 |
vendor_id = strtoul(buf, NULL, 16); |
| 1611 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) { |
| 1612 |
goto fail;
|
| 1613 |
} |
| 1614 |
product_id = strtoul(buf, NULL, 16); |
| 1615 |
} else if (line[0] == 'S' && line[1] == ':') { |
| 1616 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) { |
| 1617 |
goto fail;
|
| 1618 |
} |
| 1619 |
pstrcpy(product_name, sizeof(product_name), buf);
|
| 1620 |
} else if (line[0] == 'D' && line[1] == ':') { |
| 1621 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) { |
| 1622 |
goto fail;
|
| 1623 |
} |
| 1624 |
class_id = strtoul(buf, NULL, 16); |
| 1625 |
} |
| 1626 |
fail: ;
|
| 1627 |
} |
| 1628 |
if (device_count && (vendor_id || product_id)) {
|
| 1629 |
/* Add the last device. */
|
| 1630 |
if (port > 0) { |
| 1631 |
snprintf(buf, sizeof(buf), "%d", port); |
| 1632 |
} else {
|
| 1633 |
snprintf(buf, sizeof(buf), "?"); |
| 1634 |
} |
| 1635 |
ret = func(opaque, bus_num, addr, buf, class_id, vendor_id, |
| 1636 |
product_id, product_name, speed); |
| 1637 |
} |
| 1638 |
the_end:
|
| 1639 |
if (f) {
|
| 1640 |
fclose(f); |
| 1641 |
} |
| 1642 |
return ret;
|
| 1643 |
} |
| 1644 |
|
| 1645 |
/*
|
| 1646 |
* Read sys file-system device file
|
| 1647 |
*
|
| 1648 |
* @line address of buffer to put file contents in
|
| 1649 |
* @line_size size of line
|
| 1650 |
* @device_file path to device file (printf format string)
|
| 1651 |
* @device_name device being opened (inserted into device_file)
|
| 1652 |
*
|
| 1653 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
| 1654 |
*/
|
| 1655 |
static int usb_host_read_file(char *line, size_t line_size, |
| 1656 |
const char *device_file, const char *device_name) |
| 1657 |
{
|
| 1658 |
FILE *f; |
| 1659 |
int ret = 0; |
| 1660 |
char filename[PATH_MAX];
|
| 1661 |
|
| 1662 |
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
| 1663 |
device_file); |
| 1664 |
f = fopen(filename, "r");
|
| 1665 |
if (f) {
|
| 1666 |
ret = fgets(line, line_size, f) != NULL;
|
| 1667 |
fclose(f); |
| 1668 |
} |
| 1669 |
|
| 1670 |
return ret;
|
| 1671 |
} |
| 1672 |
|
| 1673 |
/*
|
| 1674 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
| 1675 |
* devices.
|
| 1676 |
*
|
| 1677 |
* This code is based on Robert Schiele's original patches posted to
|
| 1678 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
| 1679 |
*/
|
| 1680 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
| 1681 |
{
|
| 1682 |
DIR *dir = NULL;
|
| 1683 |
char line[1024]; |
| 1684 |
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
| 1685 |
int ret = 0; |
| 1686 |
char port[MAX_PORTLEN];
|
| 1687 |
char product_name[512]; |
| 1688 |
struct dirent *de;
|
| 1689 |
|
| 1690 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
| 1691 |
if (!dir) {
|
| 1692 |
perror("husb: cannot open devices directory");
|
| 1693 |
goto the_end;
|
| 1694 |
} |
| 1695 |
|
| 1696 |
while ((de = readdir(dir))) {
|
| 1697 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
| 1698 |
if (sscanf(de->d_name, "%d-%7[0-9.]", &bus_num, port) < 2) { |
| 1699 |
continue;
|
| 1700 |
} |
| 1701 |
|
| 1702 |
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) { |
| 1703 |
goto the_end;
|
| 1704 |
} |
| 1705 |
if (sscanf(line, "%d", &addr) != 1) { |
| 1706 |
goto the_end;
|
| 1707 |
} |
| 1708 |
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
| 1709 |
de->d_name)) {
|
| 1710 |
goto the_end;
|
| 1711 |
} |
| 1712 |
if (sscanf(line, "%x", &class_id) != 1) { |
| 1713 |
goto the_end;
|
| 1714 |
} |
| 1715 |
|
| 1716 |
if (!usb_host_read_file(line, sizeof(line), "idVendor", |
| 1717 |
de->d_name)) {
|
| 1718 |
goto the_end;
|
| 1719 |
} |
| 1720 |
if (sscanf(line, "%x", &vendor_id) != 1) { |
| 1721 |
goto the_end;
|
| 1722 |
} |
| 1723 |
if (!usb_host_read_file(line, sizeof(line), "idProduct", |
| 1724 |
de->d_name)) {
|
| 1725 |
goto the_end;
|
| 1726 |
} |
| 1727 |
if (sscanf(line, "%x", &product_id) != 1) { |
| 1728 |
goto the_end;
|
| 1729 |
} |
| 1730 |
if (!usb_host_read_file(line, sizeof(line), "product", |
| 1731 |
de->d_name)) {
|
| 1732 |
*product_name = 0;
|
| 1733 |
} else {
|
| 1734 |
if (strlen(line) > 0) { |
| 1735 |
line[strlen(line) - 1] = '\0'; |
| 1736 |
} |
| 1737 |
pstrcpy(product_name, sizeof(product_name), line);
|
| 1738 |
} |
| 1739 |
|
| 1740 |
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) { |
| 1741 |
goto the_end;
|
| 1742 |
} |
| 1743 |
if (!strcmp(line, "5000\n")) { |
| 1744 |
speed = USB_SPEED_SUPER; |
| 1745 |
} else if (!strcmp(line, "480\n")) { |
| 1746 |
speed = USB_SPEED_HIGH; |
| 1747 |
} else if (!strcmp(line, "1.5\n")) { |
| 1748 |
speed = USB_SPEED_LOW; |
| 1749 |
} else {
|
| 1750 |
speed = USB_SPEED_FULL; |
| 1751 |
} |
| 1752 |
|
| 1753 |
ret = func(opaque, bus_num, addr, port, class_id, vendor_id, |
| 1754 |
product_id, product_name, speed); |
| 1755 |
if (ret) {
|
| 1756 |
goto the_end;
|
| 1757 |
} |
| 1758 |
} |
| 1759 |
} |
| 1760 |
the_end:
|
| 1761 |
if (dir) {
|
| 1762 |
closedir(dir); |
| 1763 |
} |
| 1764 |
return ret;
|
| 1765 |
} |
| 1766 |
|
| 1767 |
/*
|
| 1768 |
* Determine how to access the host's USB devices and call the
|
| 1769 |
* specific support function.
|
| 1770 |
*/
|
| 1771 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
| 1772 |
{
|
| 1773 |
Monitor *mon = cur_mon; |
| 1774 |
FILE *f = NULL;
|
| 1775 |
DIR *dir = NULL;
|
| 1776 |
int ret = 0; |
| 1777 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
| 1778 |
char devpath[PATH_MAX];
|
| 1779 |
|
| 1780 |
/* only check the host once */
|
| 1781 |
if (!usb_fs_type) {
|
| 1782 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
| 1783 |
if (dir) {
|
| 1784 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
| 1785 |
strcpy(devpath, USBDEVBUS_PATH); |
| 1786 |
usb_fs_type = USB_FS_SYS; |
| 1787 |
closedir(dir); |
| 1788 |
DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
| 1789 |
goto found_devices;
|
| 1790 |
} |
| 1791 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
| 1792 |
if (f) {
|
| 1793 |
/* devices found in /proc/bus/usb/ */
|
| 1794 |
strcpy(devpath, USBPROCBUS_PATH); |
| 1795 |
usb_fs_type = USB_FS_PROC; |
| 1796 |
fclose(f); |
| 1797 |
DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
| 1798 |
goto found_devices;
|
| 1799 |
} |
| 1800 |
/* try additional methods if an access method hasn't been found yet */
|
| 1801 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
| 1802 |
if (f) {
|
| 1803 |
/* devices found in /dev/bus/usb/ */
|
| 1804 |
strcpy(devpath, USBDEVBUS_PATH); |
| 1805 |
usb_fs_type = USB_FS_DEV; |
| 1806 |
fclose(f); |
| 1807 |
DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
| 1808 |
goto found_devices;
|
| 1809 |
} |
| 1810 |
found_devices:
|
| 1811 |
if (!usb_fs_type) {
|
| 1812 |
if (mon) {
|
| 1813 |
monitor_printf(mon, "husb: unable to access USB devices\n");
|
| 1814 |
} |
| 1815 |
return -ENOENT;
|
| 1816 |
} |
| 1817 |
|
| 1818 |
/* the module setting (used later for opening devices) */
|
| 1819 |
usb_host_device_path = g_malloc0(strlen(devpath)+1);
|
| 1820 |
strcpy(usb_host_device_path, devpath); |
| 1821 |
if (mon) {
|
| 1822 |
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
| 1823 |
fs_type[usb_fs_type], usb_host_device_path); |
| 1824 |
} |
| 1825 |
} |
| 1826 |
|
| 1827 |
switch (usb_fs_type) {
|
| 1828 |
case USB_FS_PROC:
|
| 1829 |
case USB_FS_DEV:
|
| 1830 |
ret = usb_host_scan_dev(opaque, func); |
| 1831 |
break;
|
| 1832 |
case USB_FS_SYS:
|
| 1833 |
ret = usb_host_scan_sys(opaque, func); |
| 1834 |
break;
|
| 1835 |
default:
|
| 1836 |
ret = -EINVAL; |
| 1837 |
break;
|
| 1838 |
} |
| 1839 |
return ret;
|
| 1840 |
} |
| 1841 |
|
| 1842 |
static QEMUTimer *usb_auto_timer;
|
| 1843 |
|
| 1844 |
static int usb_host_auto_scan(void *opaque, int bus_num, |
| 1845 |
int addr, const char *port, |
| 1846 |
int class_id, int vendor_id, int product_id, |
| 1847 |
const char *product_name, int speed) |
| 1848 |
{
|
| 1849 |
struct USBAutoFilter *f;
|
| 1850 |
struct USBHostDevice *s;
|
| 1851 |
|
| 1852 |
/* Ignore hubs */
|
| 1853 |
if (class_id == 9) |
| 1854 |
return 0; |
| 1855 |
|
| 1856 |
QTAILQ_FOREACH(s, &hostdevs, next) {
|
| 1857 |
f = &s->match; |
| 1858 |
|
| 1859 |
if (f->bus_num > 0 && f->bus_num != bus_num) { |
| 1860 |
continue;
|
| 1861 |
} |
| 1862 |
if (f->addr > 0 && f->addr != addr) { |
| 1863 |
continue;
|
| 1864 |
} |
| 1865 |
if (f->port != NULL && (port == NULL || strcmp(f->port, port) != 0)) { |
| 1866 |
continue;
|
| 1867 |
} |
| 1868 |
|
| 1869 |
if (f->vendor_id > 0 && f->vendor_id != vendor_id) { |
| 1870 |
continue;
|
| 1871 |
} |
| 1872 |
|
| 1873 |
if (f->product_id > 0 && f->product_id != product_id) { |
| 1874 |
continue;
|
| 1875 |
} |
| 1876 |
/* We got a match */
|
| 1877 |
s->seen++; |
| 1878 |
if (s->errcount >= 3) { |
| 1879 |
return 0; |
| 1880 |
} |
| 1881 |
|
| 1882 |
/* Already attached ? */
|
| 1883 |
if (s->fd != -1) { |
| 1884 |
return 0; |
| 1885 |
} |
| 1886 |
DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
| 1887 |
|
| 1888 |
if (usb_host_open(s, bus_num, addr, port, product_name, speed) < 0) { |
| 1889 |
s->errcount++; |
| 1890 |
} |
| 1891 |
break;
|
| 1892 |
} |
| 1893 |
|
| 1894 |
return 0; |
| 1895 |
} |
| 1896 |
|
| 1897 |
static void usb_host_auto_check(void *unused) |
| 1898 |
{
|
| 1899 |
struct USBHostDevice *s;
|
| 1900 |
int unconnected = 0; |
| 1901 |
|
| 1902 |
usb_host_scan(NULL, usb_host_auto_scan);
|
| 1903 |
|
| 1904 |
QTAILQ_FOREACH(s, &hostdevs, next) {
|
| 1905 |
if (s->fd == -1) { |
| 1906 |
unconnected++; |
| 1907 |
} |
| 1908 |
if (s->seen == 0) { |
| 1909 |
s->errcount = 0;
|
| 1910 |
} |
| 1911 |
s->seen = 0;
|
| 1912 |
} |
| 1913 |
|
| 1914 |
if (unconnected == 0) { |
| 1915 |
/* nothing to watch */
|
| 1916 |
if (usb_auto_timer) {
|
| 1917 |
qemu_del_timer(usb_auto_timer); |
| 1918 |
trace_usb_host_auto_scan_disabled(); |
| 1919 |
} |
| 1920 |
return;
|
| 1921 |
} |
| 1922 |
|
| 1923 |
if (!usb_auto_timer) {
|
| 1924 |
usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL);
|
| 1925 |
if (!usb_auto_timer) {
|
| 1926 |
return;
|
| 1927 |
} |
| 1928 |
trace_usb_host_auto_scan_enabled(); |
| 1929 |
} |
| 1930 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000);
|
| 1931 |
} |
| 1932 |
|
| 1933 |
/*
|
| 1934 |
* Autoconnect filter
|
| 1935 |
* Format:
|
| 1936 |
* auto:bus:dev[:vid:pid]
|
| 1937 |
* auto:bus.dev[:vid:pid]
|
| 1938 |
*
|
| 1939 |
* bus - bus number (dec, * means any)
|
| 1940 |
* dev - device number (dec, * means any)
|
| 1941 |
* vid - vendor id (hex, * means any)
|
| 1942 |
* pid - product id (hex, * means any)
|
| 1943 |
*
|
| 1944 |
* See 'lsusb' output.
|
| 1945 |
*/
|
| 1946 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
| 1947 |
{
|
| 1948 |
enum { BUS, DEV, VID, PID, DONE };
|
| 1949 |
const char *p = spec; |
| 1950 |
int i;
|
| 1951 |
|
| 1952 |
f->bus_num = 0;
|
| 1953 |
f->addr = 0;
|
| 1954 |
f->vendor_id = 0;
|
| 1955 |
f->product_id = 0;
|
| 1956 |
|
| 1957 |
for (i = BUS; i < DONE; i++) {
|
| 1958 |
p = strpbrk(p, ":.");
|
| 1959 |
if (!p) {
|
| 1960 |
break;
|
| 1961 |
} |
| 1962 |
p++; |
| 1963 |
|
| 1964 |
if (*p == '*') { |
| 1965 |
continue;
|
| 1966 |
} |
| 1967 |
switch(i) {
|
| 1968 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
| 1969 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
| 1970 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
| 1971 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
| 1972 |
} |
| 1973 |
} |
| 1974 |
|
| 1975 |
if (i < DEV) {
|
| 1976 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
| 1977 |
return -1; |
| 1978 |
} |
| 1979 |
|
| 1980 |
return 0; |
| 1981 |
} |
| 1982 |
|
| 1983 |
/**********************/
|
| 1984 |
/* USB host device info */
|
| 1985 |
|
| 1986 |
struct usb_class_info {
|
| 1987 |
int class;
|
| 1988 |
const char *class_name; |
| 1989 |
}; |
| 1990 |
|
| 1991 |
static const struct usb_class_info usb_class_info[] = { |
| 1992 |
{ USB_CLASS_AUDIO, "Audio"},
|
| 1993 |
{ USB_CLASS_COMM, "Communication"},
|
| 1994 |
{ USB_CLASS_HID, "HID"},
|
| 1995 |
{ USB_CLASS_HUB, "Hub" },
|
| 1996 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
| 1997 |
{ USB_CLASS_PRINTER, "Printer" },
|
| 1998 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
| 1999 |
{ USB_CLASS_CDC_DATA, "Data" },
|
| 2000 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
| 2001 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
| 2002 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
| 2003 |
{ USB_CLASS_CSCID, "Smart Card" },
|
| 2004 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
| 2005 |
{ -1, NULL }
|
| 2006 |
}; |
| 2007 |
|
| 2008 |
static const char *usb_class_str(uint8_t class) |
| 2009 |
{
|
| 2010 |
const struct usb_class_info *p; |
| 2011 |
for(p = usb_class_info; p->class != -1; p++) { |
| 2012 |
if (p->class == class) {
|
| 2013 |
break;
|
| 2014 |
} |
| 2015 |
} |
| 2016 |
return p->class_name;
|
| 2017 |
} |
| 2018 |
|
| 2019 |
static void usb_info_device(Monitor *mon, int bus_num, |
| 2020 |
int addr, const char *port, |
| 2021 |
int class_id, int vendor_id, int product_id, |
| 2022 |
const char *product_name, |
| 2023 |
int speed)
|
| 2024 |
{
|
| 2025 |
const char *class_str, *speed_str; |
| 2026 |
|
| 2027 |
switch(speed) {
|
| 2028 |
case USB_SPEED_LOW:
|
| 2029 |
speed_str = "1.5";
|
| 2030 |
break;
|
| 2031 |
case USB_SPEED_FULL:
|
| 2032 |
speed_str = "12";
|
| 2033 |
break;
|
| 2034 |
case USB_SPEED_HIGH:
|
| 2035 |
speed_str = "480";
|
| 2036 |
break;
|
| 2037 |
case USB_SPEED_SUPER:
|
| 2038 |
speed_str = "5000";
|
| 2039 |
break;
|
| 2040 |
default:
|
| 2041 |
speed_str = "?";
|
| 2042 |
break;
|
| 2043 |
} |
| 2044 |
|
| 2045 |
monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
|
| 2046 |
bus_num, addr, port, speed_str); |
| 2047 |
class_str = usb_class_str(class_id); |
| 2048 |
if (class_str) {
|
| 2049 |
monitor_printf(mon, " %s:", class_str);
|
| 2050 |
} else {
|
| 2051 |
monitor_printf(mon, " Class %02x:", class_id);
|
| 2052 |
} |
| 2053 |
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
| 2054 |
if (product_name[0] != '\0') { |
| 2055 |
monitor_printf(mon, ", %s", product_name);
|
| 2056 |
} |
| 2057 |
monitor_printf(mon, "\n");
|
| 2058 |
} |
| 2059 |
|
| 2060 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
| 2061 |
const char *path, int class_id, |
| 2062 |
int vendor_id, int product_id, |
| 2063 |
const char *product_name, |
| 2064 |
int speed)
|
| 2065 |
{
|
| 2066 |
Monitor *mon = opaque; |
| 2067 |
|
| 2068 |
usb_info_device(mon, bus_num, addr, path, class_id, vendor_id, product_id, |
| 2069 |
product_name, speed); |
| 2070 |
return 0; |
| 2071 |
} |
| 2072 |
|
| 2073 |
static void dec2str(int val, char *str, size_t size) |
| 2074 |
{
|
| 2075 |
if (val == 0) { |
| 2076 |
snprintf(str, size, "*");
|
| 2077 |
} else {
|
| 2078 |
snprintf(str, size, "%d", val);
|
| 2079 |
} |
| 2080 |
} |
| 2081 |
|
| 2082 |
static void hex2str(int val, char *str, size_t size) |
| 2083 |
{
|
| 2084 |
if (val == 0) { |
| 2085 |
snprintf(str, size, "*");
|
| 2086 |
} else {
|
| 2087 |
snprintf(str, size, "%04x", val);
|
| 2088 |
} |
| 2089 |
} |
| 2090 |
|
| 2091 |
void usb_host_info(Monitor *mon)
|
| 2092 |
{
|
| 2093 |
struct USBAutoFilter *f;
|
| 2094 |
struct USBHostDevice *s;
|
| 2095 |
|
| 2096 |
usb_host_scan(mon, usb_host_info_device); |
| 2097 |
|
| 2098 |
if (QTAILQ_EMPTY(&hostdevs)) {
|
| 2099 |
return;
|
| 2100 |
} |
| 2101 |
|
| 2102 |
monitor_printf(mon, " Auto filters:\n");
|
| 2103 |
QTAILQ_FOREACH(s, &hostdevs, next) {
|
| 2104 |
char bus[10], addr[10], vid[10], pid[10]; |
| 2105 |
f = &s->match; |
| 2106 |
dec2str(f->bus_num, bus, sizeof(bus));
|
| 2107 |
dec2str(f->addr, addr, sizeof(addr));
|
| 2108 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
| 2109 |
hex2str(f->product_id, pid, sizeof(pid));
|
| 2110 |
monitor_printf(mon, " Bus %s, Addr %s, Port %s, ID %s:%s\n",
|
| 2111 |
bus, addr, f->port ? f->port : "*", vid, pid);
|
| 2112 |
} |
| 2113 |
} |