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| 1 |
/*
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|---|---|
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* Linux host USB redirector
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*
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| 4 |
* Copyright (c) 2005 Fabrice Bellard
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*
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| 6 |
* Copyright (c) 2008 Max Krasnyansky
|
| 7 |
* 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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| 22 |
* all copies or substantial portions of the Software.
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*
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| 24 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 25 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 26 |
* 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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| 28 |
* 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 |
|
| 37 |
#include <dirent.h> |
| 38 |
#include <sys/ioctl.h> |
| 39 |
#include <signal.h> |
| 40 |
|
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#include <linux/usbdevice_fs.h> |
| 42 |
#include <linux/version.h> |
| 43 |
#include "hw/usb.h" |
| 44 |
|
| 45 |
/* We redefine it to avoid version problems */
|
| 46 |
struct usb_ctrltransfer {
|
| 47 |
uint8_t bRequestType; |
| 48 |
uint8_t bRequest; |
| 49 |
uint16_t wValue; |
| 50 |
uint16_t wIndex; |
| 51 |
uint16_t wLength; |
| 52 |
uint32_t timeout; |
| 53 |
void *data;
|
| 54 |
}; |
| 55 |
|
| 56 |
struct usb_ctrlrequest {
|
| 57 |
uint8_t bRequestType; |
| 58 |
uint8_t bRequest; |
| 59 |
uint16_t wValue; |
| 60 |
uint16_t wIndex; |
| 61 |
uint16_t wLength; |
| 62 |
}; |
| 63 |
|
| 64 |
typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, |
| 65 |
int vendor_id, int product_id, |
| 66 |
const char *product_name, int speed); |
| 67 |
|
| 68 |
//#define DEBUG
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| 69 |
|
| 70 |
#ifdef DEBUG
|
| 71 |
#define dprintf printf
|
| 72 |
#else
|
| 73 |
#define dprintf(...)
|
| 74 |
#endif
|
| 75 |
|
| 76 |
#define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
| 77 |
|
| 78 |
#define USBPROCBUS_PATH "/proc/bus/usb" |
| 79 |
#define PRODUCT_NAME_SZ 32 |
| 80 |
#define MAX_ENDPOINTS 16 |
| 81 |
#define USBDEVBUS_PATH "/dev/bus/usb" |
| 82 |
#define USBSYSBUS_PATH "/sys/bus/usb" |
| 83 |
|
| 84 |
static char *usb_host_device_path; |
| 85 |
|
| 86 |
#define USB_FS_NONE 0 |
| 87 |
#define USB_FS_PROC 1 |
| 88 |
#define USB_FS_DEV 2 |
| 89 |
#define USB_FS_SYS 3 |
| 90 |
|
| 91 |
static int usb_fs_type; |
| 92 |
|
| 93 |
/* endpoint association data */
|
| 94 |
struct endp_data {
|
| 95 |
uint8_t type; |
| 96 |
uint8_t halted; |
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}; |
| 98 |
|
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enum {
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CTRL_STATE_IDLE = 0,
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CTRL_STATE_SETUP, |
| 102 |
CTRL_STATE_DATA, |
| 103 |
CTRL_STATE_ACK |
| 104 |
}; |
| 105 |
|
| 106 |
/*
|
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* Control transfer state.
|
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* Note that 'buffer' _must_ follow 'req' field because
|
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* we need contigious buffer when we submit control URB.
|
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*/
|
| 111 |
struct ctrl_struct {
|
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uint16_t len; |
| 113 |
uint16_t offset; |
| 114 |
uint8_t state; |
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struct usb_ctrlrequest req;
|
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uint8_t buffer[2048];
|
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}; |
| 118 |
|
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struct USBAutoFilter {
|
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uint32_t bus_num; |
| 121 |
uint32_t addr; |
| 122 |
uint32_t vendor_id; |
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uint32_t product_id; |
| 124 |
}; |
| 125 |
|
| 126 |
typedef struct USBHostDevice { |
| 127 |
USBDevice dev; |
| 128 |
int fd;
|
| 129 |
|
| 130 |
uint8_t descr[1024];
|
| 131 |
int descr_len;
|
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int configuration;
|
| 133 |
int ninterfaces;
|
| 134 |
int closing;
|
| 135 |
|
| 136 |
struct ctrl_struct ctrl;
|
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struct endp_data endp_table[MAX_ENDPOINTS];
|
| 138 |
|
| 139 |
/* Host side address */
|
| 140 |
int bus_num;
|
| 141 |
int addr;
|
| 142 |
struct USBAutoFilter match;
|
| 143 |
|
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QTAILQ_ENTRY(USBHostDevice) next; |
| 145 |
} USBHostDevice; |
| 146 |
|
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static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
|
| 148 |
|
| 149 |
static int usb_host_close(USBHostDevice *dev); |
| 150 |
static int parse_filter(const char *spec, struct USBAutoFilter *f); |
| 151 |
static void usb_host_auto_check(void *unused); |
| 152 |
|
| 153 |
static int is_isoc(USBHostDevice *s, int ep) |
| 154 |
{
|
| 155 |
return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
| 156 |
} |
| 157 |
|
| 158 |
static int is_halted(USBHostDevice *s, int ep) |
| 159 |
{
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| 160 |
return s->endp_table[ep - 1].halted; |
| 161 |
} |
| 162 |
|
| 163 |
static void clear_halt(USBHostDevice *s, int ep) |
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{
|
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s->endp_table[ep - 1].halted = 0; |
| 166 |
} |
| 167 |
|
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static void set_halt(USBHostDevice *s, int ep) |
| 169 |
{
|
| 170 |
s->endp_table[ep - 1].halted = 1; |
| 171 |
} |
| 172 |
|
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/*
|
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* Async URB state.
|
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* We always allocate one isoc descriptor even for bulk transfers
|
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* to simplify allocation and casts.
|
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*/
|
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typedef struct AsyncURB |
| 179 |
{
|
| 180 |
struct usbdevfs_urb urb;
|
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struct usbdevfs_iso_packet_desc isocpd;
|
| 182 |
|
| 183 |
USBPacket *packet; |
| 184 |
USBHostDevice *hdev; |
| 185 |
} AsyncURB; |
| 186 |
|
| 187 |
static AsyncURB *async_alloc(void) |
| 188 |
{
|
| 189 |
return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
| 190 |
} |
| 191 |
|
| 192 |
static void async_free(AsyncURB *aurb) |
| 193 |
{
|
| 194 |
qemu_free(aurb); |
| 195 |
} |
| 196 |
|
| 197 |
static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
| 198 |
{
|
| 199 |
switch(s->ctrl.state) {
|
| 200 |
case CTRL_STATE_SETUP:
|
| 201 |
if (p->len < s->ctrl.len)
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s->ctrl.len = p->len; |
| 203 |
s->ctrl.state = CTRL_STATE_DATA; |
| 204 |
p->len = 8;
|
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break;
|
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|
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case CTRL_STATE_ACK:
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s->ctrl.state = CTRL_STATE_IDLE; |
| 209 |
p->len = 0;
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break;
|
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|
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default:
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break;
|
| 214 |
} |
| 215 |
} |
| 216 |
|
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static void async_complete(void *opaque) |
| 218 |
{
|
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USBHostDevice *s = opaque; |
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AsyncURB *aurb; |
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|
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while (1) { |
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USBPacket *p; |
| 224 |
|
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int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
|
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if (r < 0) { |
| 227 |
if (errno == EAGAIN)
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return;
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|
| 230 |
if (errno == ENODEV && !s->closing) {
|
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printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
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usb_host_close(s); |
| 233 |
usb_host_auto_check(NULL);
|
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return;
|
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} |
| 236 |
|
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dprintf("husb: async. reap urb failed errno %d\n", errno);
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return;
|
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} |
| 240 |
|
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p = aurb->packet; |
| 242 |
|
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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); |
| 245 |
|
| 246 |
if (p) {
|
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switch (aurb->urb.status) {
|
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case 0: |
| 249 |
p->len = aurb->urb.actual_length; |
| 250 |
if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
|
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async_complete_ctrl(s, p); |
| 252 |
break;
|
| 253 |
|
| 254 |
case -EPIPE:
|
| 255 |
set_halt(s, p->devep); |
| 256 |
p->len = USB_RET_STALL; |
| 257 |
break;
|
| 258 |
|
| 259 |
default:
|
| 260 |
p->len = USB_RET_NAK; |
| 261 |
break;
|
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} |
| 263 |
|
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usb_packet_complete(p); |
| 265 |
} |
| 266 |
|
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async_free(aurb); |
| 268 |
} |
| 269 |
} |
| 270 |
|
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static void async_cancel(USBPacket *unused, void *opaque) |
| 272 |
{
|
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AsyncURB *aurb = opaque; |
| 274 |
USBHostDevice *s = aurb->hdev; |
| 275 |
|
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dprintf("husb: async cancel. aurb %p\n", aurb);
|
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|
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/* Mark it as dead (see async_complete above) */
|
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aurb->packet = NULL;
|
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|
| 281 |
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
|
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if (r < 0) { |
| 283 |
dprintf("husb: async. discard urb failed errno %d\n", errno);
|
| 284 |
} |
| 285 |
} |
| 286 |
|
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static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
| 288 |
{
|
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int dev_descr_len, config_descr_len;
|
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int interface, nb_interfaces, nb_configurations;
|
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int ret, i;
|
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|
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if (configuration == 0) /* address state - ignore */ |
| 294 |
return 1; |
| 295 |
|
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dprintf("husb: claiming interfaces. config %d\n", configuration);
|
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|
| 298 |
i = 0;
|
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dev_descr_len = dev->descr[0];
|
| 300 |
if (dev_descr_len > dev->descr_len)
|
| 301 |
goto fail;
|
| 302 |
nb_configurations = dev->descr[17];
|
| 303 |
|
| 304 |
i += dev_descr_len; |
| 305 |
while (i < dev->descr_len) {
|
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dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
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dev->descr[i], dev->descr[i+1]);
|
| 308 |
|
| 309 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
| 310 |
i += dev->descr[i]; |
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continue;
|
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} |
| 313 |
config_descr_len = dev->descr[i]; |
| 314 |
|
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printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
| 316 |
|
| 317 |
if (configuration < 0 || configuration == dev->descr[i + 5]) { |
| 318 |
configuration = dev->descr[i + 5];
|
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break;
|
| 320 |
} |
| 321 |
|
| 322 |
i += config_descr_len; |
| 323 |
} |
| 324 |
|
| 325 |
if (i >= dev->descr_len) {
|
| 326 |
fprintf(stderr, "husb: update iface failed. no matching configuration\n");
|
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goto fail;
|
| 328 |
} |
| 329 |
nb_interfaces = dev->descr[i + 4];
|
| 330 |
|
| 331 |
#ifdef USBDEVFS_DISCONNECT
|
| 332 |
/* earlier Linux 2.4 do not support that */
|
| 333 |
{
|
| 334 |
struct usbdevfs_ioctl ctrl;
|
| 335 |
for (interface = 0; interface < nb_interfaces; interface++) { |
| 336 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
| 337 |
ctrl.ifno = interface; |
| 338 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
| 339 |
if (ret < 0 && errno != ENODATA) { |
| 340 |
perror("USBDEVFS_DISCONNECT");
|
| 341 |
goto fail;
|
| 342 |
} |
| 343 |
} |
| 344 |
} |
| 345 |
#endif
|
| 346 |
|
| 347 |
/* XXX: only grab if all interfaces are free */
|
| 348 |
for (interface = 0; interface < nb_interfaces; interface++) { |
| 349 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
| 350 |
if (ret < 0) { |
| 351 |
if (errno == EBUSY) {
|
| 352 |
printf("husb: update iface. device already grabbed\n");
|
| 353 |
} else {
|
| 354 |
perror("husb: failed to claim interface");
|
| 355 |
} |
| 356 |
fail:
|
| 357 |
return 0; |
| 358 |
} |
| 359 |
} |
| 360 |
|
| 361 |
printf("husb: %d interfaces claimed for configuration %d\n",
|
| 362 |
nb_interfaces, configuration); |
| 363 |
|
| 364 |
dev->ninterfaces = nb_interfaces; |
| 365 |
dev->configuration = configuration; |
| 366 |
return 1; |
| 367 |
} |
| 368 |
|
| 369 |
static int usb_host_release_interfaces(USBHostDevice *s) |
| 370 |
{
|
| 371 |
int ret, i;
|
| 372 |
|
| 373 |
dprintf("husb: releasing interfaces\n");
|
| 374 |
|
| 375 |
for (i = 0; i < s->ninterfaces; i++) { |
| 376 |
ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
| 377 |
if (ret < 0) { |
| 378 |
perror("husb: failed to release interface");
|
| 379 |
return 0; |
| 380 |
} |
| 381 |
} |
| 382 |
|
| 383 |
return 1; |
| 384 |
} |
| 385 |
|
| 386 |
static void usb_host_handle_reset(USBDevice *dev) |
| 387 |
{
|
| 388 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 389 |
|
| 390 |
dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
| 391 |
|
| 392 |
ioctl(s->fd, USBDEVFS_RESET); |
| 393 |
|
| 394 |
usb_host_claim_interfaces(s, s->configuration); |
| 395 |
} |
| 396 |
|
| 397 |
static void usb_host_handle_destroy(USBDevice *dev) |
| 398 |
{
|
| 399 |
USBHostDevice *s = (USBHostDevice *)dev; |
| 400 |
|
| 401 |
usb_host_close(s); |
| 402 |
QTAILQ_REMOVE(&hostdevs, s, next); |
| 403 |
} |
| 404 |
|
| 405 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
| 406 |
|
| 407 |
static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
| 408 |
{
|
| 409 |
struct usbdevfs_urb *urb;
|
| 410 |
AsyncURB *aurb; |
| 411 |
int ret;
|
| 412 |
|
| 413 |
aurb = async_alloc(); |
| 414 |
aurb->hdev = s; |
| 415 |
aurb->packet = p; |
| 416 |
|
| 417 |
urb = &aurb->urb; |
| 418 |
|
| 419 |
if (p->pid == USB_TOKEN_IN)
|
| 420 |
urb->endpoint = p->devep | 0x80;
|
| 421 |
else
|
| 422 |
urb->endpoint = p->devep; |
| 423 |
|
| 424 |
if (is_halted(s, p->devep)) {
|
| 425 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
| 426 |
if (ret < 0) { |
| 427 |
dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
|
| 428 |
urb->endpoint, errno); |
| 429 |
return USB_RET_NAK;
|
| 430 |
} |
| 431 |
clear_halt(s, p->devep); |
| 432 |
} |
| 433 |
|
| 434 |
urb->buffer = p->data; |
| 435 |
urb->buffer_length = p->len; |
| 436 |
|
| 437 |
if (is_isoc(s, p->devep)) {
|
| 438 |
/* Setup ISOC transfer */
|
| 439 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
| 440 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
| 441 |
urb->number_of_packets = 1;
|
| 442 |
urb->iso_frame_desc[0].length = p->len;
|
| 443 |
} else {
|
| 444 |
/* Setup bulk transfer */
|
| 445 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
| 446 |
} |
| 447 |
|
| 448 |
urb->usercontext = s; |
| 449 |
|
| 450 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
| 451 |
|
| 452 |
dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
|
| 453 |
|
| 454 |
if (ret < 0) { |
| 455 |
dprintf("husb: submit failed. errno %d\n", errno);
|
| 456 |
async_free(aurb); |
| 457 |
|
| 458 |
switch(errno) {
|
| 459 |
case ETIMEDOUT:
|
| 460 |
return USB_RET_NAK;
|
| 461 |
case EPIPE:
|
| 462 |
default:
|
| 463 |
return USB_RET_STALL;
|
| 464 |
} |
| 465 |
} |
| 466 |
|
| 467 |
usb_defer_packet(p, async_cancel, aurb); |
| 468 |
return USB_RET_ASYNC;
|
| 469 |
} |
| 470 |
|
| 471 |
static int ctrl_error(void) |
| 472 |
{
|
| 473 |
if (errno == ETIMEDOUT)
|
| 474 |
return USB_RET_NAK;
|
| 475 |
else
|
| 476 |
return USB_RET_STALL;
|
| 477 |
} |
| 478 |
|
| 479 |
static int usb_host_set_address(USBHostDevice *s, int addr) |
| 480 |
{
|
| 481 |
dprintf("husb: ctrl set addr %u\n", addr);
|
| 482 |
s->dev.addr = addr; |
| 483 |
return 0; |
| 484 |
} |
| 485 |
|
| 486 |
static int usb_host_set_config(USBHostDevice *s, int config) |
| 487 |
{
|
| 488 |
usb_host_release_interfaces(s); |
| 489 |
|
| 490 |
int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
| 491 |
|
| 492 |
dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
| 493 |
|
| 494 |
if (ret < 0) |
| 495 |
return ctrl_error();
|
| 496 |
|
| 497 |
usb_host_claim_interfaces(s, config); |
| 498 |
return 0; |
| 499 |
} |
| 500 |
|
| 501 |
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
| 502 |
{
|
| 503 |
struct usbdevfs_setinterface si;
|
| 504 |
int ret;
|
| 505 |
|
| 506 |
si.interface = iface; |
| 507 |
si.altsetting = alt; |
| 508 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
| 509 |
|
| 510 |
dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
| 511 |
iface, alt, ret, errno); |
| 512 |
|
| 513 |
if (ret < 0) |
| 514 |
return ctrl_error();
|
| 515 |
|
| 516 |
usb_linux_update_endp_table(s); |
| 517 |
return 0; |
| 518 |
} |
| 519 |
|
| 520 |
static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
| 521 |
{
|
| 522 |
struct usbdevfs_urb *urb;
|
| 523 |
AsyncURB *aurb; |
| 524 |
int ret, value, index;
|
| 525 |
int buffer_len;
|
| 526 |
|
| 527 |
/*
|
| 528 |
* Process certain standard device requests.
|
| 529 |
* These are infrequent and are processed synchronously.
|
| 530 |
*/
|
| 531 |
value = le16_to_cpu(s->ctrl.req.wValue); |
| 532 |
index = le16_to_cpu(s->ctrl.req.wIndex); |
| 533 |
|
| 534 |
dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
| 535 |
s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
| 536 |
s->ctrl.len); |
| 537 |
|
| 538 |
if (s->ctrl.req.bRequestType == 0) { |
| 539 |
switch (s->ctrl.req.bRequest) {
|
| 540 |
case USB_REQ_SET_ADDRESS:
|
| 541 |
return usb_host_set_address(s, value);
|
| 542 |
|
| 543 |
case USB_REQ_SET_CONFIGURATION:
|
| 544 |
return usb_host_set_config(s, value & 0xff); |
| 545 |
} |
| 546 |
} |
| 547 |
|
| 548 |
if (s->ctrl.req.bRequestType == 1 && |
| 549 |
s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) |
| 550 |
return usb_host_set_interface(s, index, value);
|
| 551 |
|
| 552 |
/* The rest are asynchronous */
|
| 553 |
|
| 554 |
buffer_len = 8 + s->ctrl.len;
|
| 555 |
if (buffer_len > sizeof(s->ctrl.buffer)) { |
| 556 |
fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
|
| 557 |
buffer_len, sizeof(s->ctrl.buffer));
|
| 558 |
return USB_RET_STALL;
|
| 559 |
} |
| 560 |
|
| 561 |
aurb = async_alloc(); |
| 562 |
aurb->hdev = s; |
| 563 |
aurb->packet = p; |
| 564 |
|
| 565 |
/*
|
| 566 |
* Setup ctrl transfer.
|
| 567 |
*
|
| 568 |
* s->ctrl is layed out such that data buffer immediately follows
|
| 569 |
* 'req' struct which is exactly what usbdevfs expects.
|
| 570 |
*/
|
| 571 |
urb = &aurb->urb; |
| 572 |
|
| 573 |
urb->type = USBDEVFS_URB_TYPE_CONTROL; |
| 574 |
urb->endpoint = p->devep; |
| 575 |
|
| 576 |
urb->buffer = &s->ctrl.req; |
| 577 |
urb->buffer_length = buffer_len; |
| 578 |
|
| 579 |
urb->usercontext = s; |
| 580 |
|
| 581 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
| 582 |
|
| 583 |
dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
| 584 |
|
| 585 |
if (ret < 0) { |
| 586 |
dprintf("husb: submit failed. errno %d\n", errno);
|
| 587 |
async_free(aurb); |
| 588 |
|
| 589 |
switch(errno) {
|
| 590 |
case ETIMEDOUT:
|
| 591 |
return USB_RET_NAK;
|
| 592 |
case EPIPE:
|
| 593 |
default:
|
| 594 |
return USB_RET_STALL;
|
| 595 |
} |
| 596 |
} |
| 597 |
|
| 598 |
usb_defer_packet(p, async_cancel, aurb); |
| 599 |
return USB_RET_ASYNC;
|
| 600 |
} |
| 601 |
|
| 602 |
static int do_token_setup(USBDevice *dev, USBPacket *p) |
| 603 |
{
|
| 604 |
USBHostDevice *s = (USBHostDevice *) dev; |
| 605 |
int ret = 0; |
| 606 |
|
| 607 |
if (p->len != 8) |
| 608 |
return USB_RET_STALL;
|
| 609 |
|
| 610 |
memcpy(&s->ctrl.req, p->data, 8);
|
| 611 |
s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
| 612 |
s->ctrl.offset = 0;
|
| 613 |
s->ctrl.state = CTRL_STATE_SETUP; |
| 614 |
|
| 615 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
| 616 |
ret = usb_host_handle_control(s, p); |
| 617 |
if (ret < 0) |
| 618 |
return ret;
|
| 619 |
|
| 620 |
if (ret < s->ctrl.len)
|
| 621 |
s->ctrl.len = ret; |
| 622 |
s->ctrl.state = CTRL_STATE_DATA; |
| 623 |
} else {
|
| 624 |
if (s->ctrl.len == 0) |
| 625 |
s->ctrl.state = CTRL_STATE_ACK; |
| 626 |
else
|
| 627 |
s->ctrl.state = CTRL_STATE_DATA; |
| 628 |
} |
| 629 |
|
| 630 |
return ret;
|
| 631 |
} |
| 632 |
|
| 633 |
static int do_token_in(USBDevice *dev, USBPacket *p) |
| 634 |
{
|
| 635 |
USBHostDevice *s = (USBHostDevice *) dev; |
| 636 |
int ret = 0; |
| 637 |
|
| 638 |
if (p->devep != 0) |
| 639 |
return usb_host_handle_data(s, p);
|
| 640 |
|
| 641 |
switch(s->ctrl.state) {
|
| 642 |
case CTRL_STATE_ACK:
|
| 643 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
| 644 |
ret = usb_host_handle_control(s, p); |
| 645 |
if (ret == USB_RET_ASYNC)
|
| 646 |
return USB_RET_ASYNC;
|
| 647 |
|
| 648 |
s->ctrl.state = CTRL_STATE_IDLE; |
| 649 |
return ret > 0 ? 0 : ret; |
| 650 |
} |
| 651 |
|
| 652 |
return 0; |
| 653 |
|
| 654 |
case CTRL_STATE_DATA:
|
| 655 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
| 656 |
int len = s->ctrl.len - s->ctrl.offset;
|
| 657 |
if (len > p->len)
|
| 658 |
len = p->len; |
| 659 |
memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
| 660 |
s->ctrl.offset += len; |
| 661 |
if (s->ctrl.offset >= s->ctrl.len)
|
| 662 |
s->ctrl.state = CTRL_STATE_ACK; |
| 663 |
return len;
|
| 664 |
} |
| 665 |
|
| 666 |
s->ctrl.state = CTRL_STATE_IDLE; |
| 667 |
return USB_RET_STALL;
|
| 668 |
|
| 669 |
default:
|
| 670 |
return USB_RET_STALL;
|
| 671 |
} |
| 672 |
} |
| 673 |
|
| 674 |
static int do_token_out(USBDevice *dev, USBPacket *p) |
| 675 |
{
|
| 676 |
USBHostDevice *s = (USBHostDevice *) dev; |
| 677 |
|
| 678 |
if (p->devep != 0) |
| 679 |
return usb_host_handle_data(s, p);
|
| 680 |
|
| 681 |
switch(s->ctrl.state) {
|
| 682 |
case CTRL_STATE_ACK:
|
| 683 |
if (s->ctrl.req.bRequestType & USB_DIR_IN) {
|
| 684 |
s->ctrl.state = CTRL_STATE_IDLE; |
| 685 |
/* transfer OK */
|
| 686 |
} else {
|
| 687 |
/* ignore additional output */
|
| 688 |
} |
| 689 |
return 0; |
| 690 |
|
| 691 |
case CTRL_STATE_DATA:
|
| 692 |
if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
|
| 693 |
int len = s->ctrl.len - s->ctrl.offset;
|
| 694 |
if (len > p->len)
|
| 695 |
len = p->len; |
| 696 |
memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
| 697 |
s->ctrl.offset += len; |
| 698 |
if (s->ctrl.offset >= s->ctrl.len)
|
| 699 |
s->ctrl.state = CTRL_STATE_ACK; |
| 700 |
return len;
|
| 701 |
} |
| 702 |
|
| 703 |
s->ctrl.state = CTRL_STATE_IDLE; |
| 704 |
return USB_RET_STALL;
|
| 705 |
|
| 706 |
default:
|
| 707 |
return USB_RET_STALL;
|
| 708 |
} |
| 709 |
} |
| 710 |
|
| 711 |
/*
|
| 712 |
* Packet handler.
|
| 713 |
* Called by the HC (host controller).
|
| 714 |
*
|
| 715 |
* Returns length of the transaction or one of the USB_RET_XXX codes.
|
| 716 |
*/
|
| 717 |
static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
| 718 |
{
|
| 719 |
switch(p->pid) {
|
| 720 |
case USB_MSG_ATTACH:
|
| 721 |
s->state = USB_STATE_ATTACHED; |
| 722 |
return 0; |
| 723 |
|
| 724 |
case USB_MSG_DETACH:
|
| 725 |
s->state = USB_STATE_NOTATTACHED; |
| 726 |
return 0; |
| 727 |
|
| 728 |
case USB_MSG_RESET:
|
| 729 |
s->remote_wakeup = 0;
|
| 730 |
s->addr = 0;
|
| 731 |
s->state = USB_STATE_DEFAULT; |
| 732 |
s->info->handle_reset(s); |
| 733 |
return 0; |
| 734 |
} |
| 735 |
|
| 736 |
/* Rest of the PIDs must match our address */
|
| 737 |
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
|
| 738 |
return USB_RET_NODEV;
|
| 739 |
|
| 740 |
switch (p->pid) {
|
| 741 |
case USB_TOKEN_SETUP:
|
| 742 |
return do_token_setup(s, p);
|
| 743 |
|
| 744 |
case USB_TOKEN_IN:
|
| 745 |
return do_token_in(s, p);
|
| 746 |
|
| 747 |
case USB_TOKEN_OUT:
|
| 748 |
return do_token_out(s, p);
|
| 749 |
|
| 750 |
default:
|
| 751 |
return USB_RET_STALL;
|
| 752 |
} |
| 753 |
} |
| 754 |
|
| 755 |
/* returns 1 on problem encountered or 0 for success */
|
| 756 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
| 757 |
{
|
| 758 |
uint8_t *descriptors; |
| 759 |
uint8_t devep, type, configuration, alt_interface; |
| 760 |
struct usb_ctrltransfer ct;
|
| 761 |
int interface, ret, length, i;
|
| 762 |
|
| 763 |
ct.bRequestType = USB_DIR_IN; |
| 764 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
| 765 |
ct.wValue = 0;
|
| 766 |
ct.wIndex = 0;
|
| 767 |
ct.wLength = 1;
|
| 768 |
ct.data = &configuration; |
| 769 |
ct.timeout = 50;
|
| 770 |
|
| 771 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
| 772 |
if (ret < 0) { |
| 773 |
perror("usb_linux_update_endp_table");
|
| 774 |
return 1; |
| 775 |
} |
| 776 |
|
| 777 |
/* in address state */
|
| 778 |
if (configuration == 0) |
| 779 |
return 1; |
| 780 |
|
| 781 |
/* get the desired configuration, interface, and endpoint descriptors
|
| 782 |
* from device description */
|
| 783 |
descriptors = &s->descr[18];
|
| 784 |
length = s->descr_len - 18;
|
| 785 |
i = 0;
|
| 786 |
|
| 787 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
| 788 |
descriptors[i + 5] != configuration) {
|
| 789 |
dprintf("invalid descriptor data - configuration\n");
|
| 790 |
return 1; |
| 791 |
} |
| 792 |
i += descriptors[i]; |
| 793 |
|
| 794 |
while (i < length) {
|
| 795 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
| 796 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
| 797 |
descriptors[i + 4] == 0)) { |
| 798 |
i += descriptors[i]; |
| 799 |
continue;
|
| 800 |
} |
| 801 |
|
| 802 |
interface = descriptors[i + 2];
|
| 803 |
|
| 804 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
| 805 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
| 806 |
ct.wValue = 0;
|
| 807 |
ct.wIndex = interface; |
| 808 |
ct.wLength = 1;
|
| 809 |
ct.data = &alt_interface; |
| 810 |
ct.timeout = 50;
|
| 811 |
|
| 812 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
| 813 |
if (ret < 0) { |
| 814 |
alt_interface = interface; |
| 815 |
} |
| 816 |
|
| 817 |
/* the current interface descriptor is the active interface
|
| 818 |
* and has endpoints */
|
| 819 |
if (descriptors[i + 3] != alt_interface) { |
| 820 |
i += descriptors[i]; |
| 821 |
continue;
|
| 822 |
} |
| 823 |
|
| 824 |
/* advance to the endpoints */
|
| 825 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
| 826 |
i += descriptors[i]; |
| 827 |
|
| 828 |
if (i >= length)
|
| 829 |
break;
|
| 830 |
|
| 831 |
while (i < length) {
|
| 832 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) |
| 833 |
break;
|
| 834 |
|
| 835 |
devep = descriptors[i + 2];
|
| 836 |
switch (descriptors[i + 3] & 0x3) { |
| 837 |
case 0x00: |
| 838 |
type = USBDEVFS_URB_TYPE_CONTROL; |
| 839 |
break;
|
| 840 |
case 0x01: |
| 841 |
type = USBDEVFS_URB_TYPE_ISO; |
| 842 |
break;
|
| 843 |
case 0x02: |
| 844 |
type = USBDEVFS_URB_TYPE_BULK; |
| 845 |
break;
|
| 846 |
case 0x03: |
| 847 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
| 848 |
break;
|
| 849 |
default:
|
| 850 |
dprintf("usb_host: malformed endpoint type\n");
|
| 851 |
type = USBDEVFS_URB_TYPE_BULK; |
| 852 |
} |
| 853 |
s->endp_table[(devep & 0xf) - 1].type = type; |
| 854 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
| 855 |
|
| 856 |
i += descriptors[i]; |
| 857 |
} |
| 858 |
} |
| 859 |
return 0; |
| 860 |
} |
| 861 |
|
| 862 |
static int usb_host_open(USBHostDevice *dev, int bus_num, |
| 863 |
int addr, const char *prod_name) |
| 864 |
{
|
| 865 |
int fd = -1, ret; |
| 866 |
struct usbdevfs_connectinfo ci;
|
| 867 |
char buf[1024]; |
| 868 |
|
| 869 |
if (dev->fd != -1) |
| 870 |
goto fail;
|
| 871 |
|
| 872 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
| 873 |
|
| 874 |
if (!usb_host_device_path) {
|
| 875 |
perror("husb: USB Host Device Path not set");
|
| 876 |
goto fail;
|
| 877 |
} |
| 878 |
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
| 879 |
bus_num, addr); |
| 880 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
| 881 |
if (fd < 0) { |
| 882 |
perror(buf); |
| 883 |
goto fail;
|
| 884 |
} |
| 885 |
dprintf("husb: opened %s\n", buf);
|
| 886 |
|
| 887 |
dev->bus_num = bus_num; |
| 888 |
dev->addr = addr; |
| 889 |
dev->fd = fd; |
| 890 |
|
| 891 |
/* read the device description */
|
| 892 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
| 893 |
if (dev->descr_len <= 0) { |
| 894 |
perror("husb: reading device data failed");
|
| 895 |
goto fail;
|
| 896 |
} |
| 897 |
|
| 898 |
#ifdef DEBUG
|
| 899 |
{
|
| 900 |
int x;
|
| 901 |
printf("=== begin dumping device descriptor data ===\n");
|
| 902 |
for (x = 0; x < dev->descr_len; x++) |
| 903 |
printf("%02x ", dev->descr[x]);
|
| 904 |
printf("\n=== end dumping device descriptor data ===\n");
|
| 905 |
} |
| 906 |
#endif
|
| 907 |
|
| 908 |
|
| 909 |
/*
|
| 910 |
* Initial configuration is -1 which makes us claim first
|
| 911 |
* available config. We used to start with 1, which does not
|
| 912 |
* always work. I've seen devices where first config starts
|
| 913 |
* with 2.
|
| 914 |
*/
|
| 915 |
if (!usb_host_claim_interfaces(dev, -1)) |
| 916 |
goto fail;
|
| 917 |
|
| 918 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
| 919 |
if (ret < 0) { |
| 920 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
| 921 |
goto fail;
|
| 922 |
} |
| 923 |
|
| 924 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
| 925 |
|
| 926 |
ret = usb_linux_update_endp_table(dev); |
| 927 |
if (ret)
|
| 928 |
goto fail;
|
| 929 |
|
| 930 |
if (ci.slow)
|
| 931 |
dev->dev.speed = USB_SPEED_LOW; |
| 932 |
else
|
| 933 |
dev->dev.speed = USB_SPEED_HIGH; |
| 934 |
|
| 935 |
if (!prod_name || prod_name[0] == '\0') |
| 936 |
snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
| 937 |
"host:%d.%d", bus_num, addr);
|
| 938 |
else
|
| 939 |
pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
| 940 |
prod_name); |
| 941 |
|
| 942 |
/* USB devio uses 'write' flag to check for async completions */
|
| 943 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
| 944 |
|
| 945 |
usb_device_attach(&dev->dev); |
| 946 |
return 0; |
| 947 |
|
| 948 |
fail:
|
| 949 |
dev->fd = -1;
|
| 950 |
if (fd != -1) |
| 951 |
close(fd); |
| 952 |
return -1; |
| 953 |
} |
| 954 |
|
| 955 |
static int usb_host_close(USBHostDevice *dev) |
| 956 |
{
|
| 957 |
if (dev->fd == -1) |
| 958 |
return -1; |
| 959 |
|
| 960 |
qemu_set_fd_handler(dev->fd, NULL, NULL, NULL); |
| 961 |
dev->closing = 1;
|
| 962 |
async_complete(dev); |
| 963 |
dev->closing = 0;
|
| 964 |
usb_device_detach(&dev->dev); |
| 965 |
close(dev->fd); |
| 966 |
dev->fd = -1;
|
| 967 |
return 0; |
| 968 |
} |
| 969 |
|
| 970 |
static int usb_host_initfn(USBDevice *dev) |
| 971 |
{
|
| 972 |
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| 973 |
|
| 974 |
dev->auto_attach = 0;
|
| 975 |
s->fd = -1;
|
| 976 |
QTAILQ_INSERT_TAIL(&hostdevs, s, next); |
| 977 |
usb_host_auto_check(NULL);
|
| 978 |
return 0; |
| 979 |
} |
| 980 |
|
| 981 |
static struct USBDeviceInfo usb_host_dev_info = { |
| 982 |
.product_desc = "USB Host Device",
|
| 983 |
.qdev.name = "USB Host Device",
|
| 984 |
.qdev.alias = "usb-host",
|
| 985 |
.qdev.size = sizeof(USBHostDevice),
|
| 986 |
.init = usb_host_initfn, |
| 987 |
.handle_packet = usb_host_handle_packet, |
| 988 |
.handle_reset = usb_host_handle_reset, |
| 989 |
.handle_destroy = usb_host_handle_destroy, |
| 990 |
.usbdevice_name = "host",
|
| 991 |
.usbdevice_init = usb_host_device_open, |
| 992 |
.qdev.props = (Property[]) {
|
| 993 |
DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), |
| 994 |
DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), |
| 995 |
DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), |
| 996 |
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), |
| 997 |
DEFINE_PROP_END_OF_LIST(), |
| 998 |
}, |
| 999 |
}; |
| 1000 |
|
| 1001 |
static void usb_host_register_devices(void) |
| 1002 |
{
|
| 1003 |
usb_qdev_register(&usb_host_dev_info); |
| 1004 |
} |
| 1005 |
device_init(usb_host_register_devices) |
| 1006 |
|
| 1007 |
USBDevice *usb_host_device_open(const char *devname) |
| 1008 |
{
|
| 1009 |
struct USBAutoFilter filter;
|
| 1010 |
USBDevice *dev; |
| 1011 |
USBHostDevice *s; |
| 1012 |
char *p;
|
| 1013 |
|
| 1014 |
dev = usb_create(NULL /* FIXME */, "USB Host Device"); |
| 1015 |
s = DO_UPCAST(USBHostDevice, dev, dev); |
| 1016 |
|
| 1017 |
if (strstr(devname, "auto:")) { |
| 1018 |
if (parse_filter(devname, &filter) < 0) |
| 1019 |
goto fail;
|
| 1020 |
} else {
|
| 1021 |
if ((p = strchr(devname, '.'))) { |
| 1022 |
filter.bus_num = strtoul(devname, NULL, 0); |
| 1023 |
filter.addr = strtoul(p + 1, NULL, 0); |
| 1024 |
filter.vendor_id = 0;
|
| 1025 |
filter.product_id = 0;
|
| 1026 |
} else if ((p = strchr(devname, ':'))) { |
| 1027 |
filter.bus_num = 0;
|
| 1028 |
filter.addr = 0;
|
| 1029 |
filter.vendor_id = strtoul(devname, NULL, 16); |
| 1030 |
filter.product_id = strtoul(p + 1, NULL, 16); |
| 1031 |
} else {
|
| 1032 |
goto fail;
|
| 1033 |
} |
| 1034 |
} |
| 1035 |
|
| 1036 |
qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
|
| 1037 |
qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
|
| 1038 |
qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
|
| 1039 |
qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
|
| 1040 |
qdev_init(&dev->qdev); |
| 1041 |
return dev;
|
| 1042 |
|
| 1043 |
fail:
|
| 1044 |
qdev_free(&dev->qdev); |
| 1045 |
return NULL; |
| 1046 |
} |
| 1047 |
|
| 1048 |
int usb_host_device_close(const char *devname) |
| 1049 |
{
|
| 1050 |
#if 0
|
| 1051 |
char product_name[PRODUCT_NAME_SZ];
|
| 1052 |
int bus_num, addr;
|
| 1053 |
USBHostDevice *s;
|
| 1054 |
|
| 1055 |
if (strstr(devname, "auto:"))
|
| 1056 |
return usb_host_auto_del(devname);
|
| 1057 |
|
| 1058 |
if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
|
| 1059 |
devname) < 0)
|
| 1060 |
return -1;
|
| 1061 |
|
| 1062 |
s = hostdev_find(bus_num, addr);
|
| 1063 |
if (s) {
|
| 1064 |
usb_device_delete_addr(s->bus_num, s->dev.addr);
|
| 1065 |
return 0;
|
| 1066 |
}
|
| 1067 |
#endif
|
| 1068 |
|
| 1069 |
return -1; |
| 1070 |
} |
| 1071 |
|
| 1072 |
static int get_tag_value(char *buf, int buf_size, |
| 1073 |
const char *str, const char *tag, |
| 1074 |
const char *stopchars) |
| 1075 |
{
|
| 1076 |
const char *p; |
| 1077 |
char *q;
|
| 1078 |
p = strstr(str, tag); |
| 1079 |
if (!p)
|
| 1080 |
return -1; |
| 1081 |
p += strlen(tag); |
| 1082 |
while (qemu_isspace(*p))
|
| 1083 |
p++; |
| 1084 |
q = buf; |
| 1085 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
| 1086 |
if ((q - buf) < (buf_size - 1)) |
| 1087 |
*q++ = *p; |
| 1088 |
p++; |
| 1089 |
} |
| 1090 |
*q = '\0';
|
| 1091 |
return q - buf;
|
| 1092 |
} |
| 1093 |
|
| 1094 |
/*
|
| 1095 |
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
| 1096 |
* host's USB devices. This is legacy support since many distributions
|
| 1097 |
* are moving to /sys/bus/usb
|
| 1098 |
*/
|
| 1099 |
static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
| 1100 |
{
|
| 1101 |
FILE *f = NULL;
|
| 1102 |
char line[1024]; |
| 1103 |
char buf[1024]; |
| 1104 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
| 1105 |
char product_name[512]; |
| 1106 |
int ret = 0; |
| 1107 |
|
| 1108 |
if (!usb_host_device_path) {
|
| 1109 |
perror("husb: USB Host Device Path not set");
|
| 1110 |
goto the_end;
|
| 1111 |
} |
| 1112 |
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
| 1113 |
f = fopen(line, "r");
|
| 1114 |
if (!f) {
|
| 1115 |
perror("husb: cannot open devices file");
|
| 1116 |
goto the_end;
|
| 1117 |
} |
| 1118 |
|
| 1119 |
device_count = 0;
|
| 1120 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
| 1121 |
for(;;) {
|
| 1122 |
if (fgets(line, sizeof(line), f) == NULL) |
| 1123 |
break;
|
| 1124 |
if (strlen(line) > 0) |
| 1125 |
line[strlen(line) - 1] = '\0'; |
| 1126 |
if (line[0] == 'T' && line[1] == ':') { |
| 1127 |
if (device_count && (vendor_id || product_id)) {
|
| 1128 |
/* New device. Add the previously discovered device. */
|
| 1129 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
| 1130 |
product_id, product_name, speed); |
| 1131 |
if (ret)
|
| 1132 |
goto the_end;
|
| 1133 |
} |
| 1134 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
| 1135 |
goto fail;
|
| 1136 |
bus_num = atoi(buf); |
| 1137 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
| 1138 |
goto fail;
|
| 1139 |
addr = atoi(buf); |
| 1140 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
| 1141 |
goto fail;
|
| 1142 |
if (!strcmp(buf, "480")) |
| 1143 |
speed = USB_SPEED_HIGH; |
| 1144 |
else if (!strcmp(buf, "1.5")) |
| 1145 |
speed = USB_SPEED_LOW; |
| 1146 |
else
|
| 1147 |
speed = USB_SPEED_FULL; |
| 1148 |
product_name[0] = '\0'; |
| 1149 |
class_id = 0xff;
|
| 1150 |
device_count++; |
| 1151 |
product_id = 0;
|
| 1152 |
vendor_id = 0;
|
| 1153 |
} else if (line[0] == 'P' && line[1] == ':') { |
| 1154 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
| 1155 |
goto fail;
|
| 1156 |
vendor_id = strtoul(buf, NULL, 16); |
| 1157 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
| 1158 |
goto fail;
|
| 1159 |
product_id = strtoul(buf, NULL, 16); |
| 1160 |
} else if (line[0] == 'S' && line[1] == ':') { |
| 1161 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
| 1162 |
goto fail;
|
| 1163 |
pstrcpy(product_name, sizeof(product_name), buf);
|
| 1164 |
} else if (line[0] == 'D' && line[1] == ':') { |
| 1165 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
| 1166 |
goto fail;
|
| 1167 |
class_id = strtoul(buf, NULL, 16); |
| 1168 |
} |
| 1169 |
fail: ;
|
| 1170 |
} |
| 1171 |
if (device_count && (vendor_id || product_id)) {
|
| 1172 |
/* Add the last device. */
|
| 1173 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
| 1174 |
product_id, product_name, speed); |
| 1175 |
} |
| 1176 |
the_end:
|
| 1177 |
if (f)
|
| 1178 |
fclose(f); |
| 1179 |
return ret;
|
| 1180 |
} |
| 1181 |
|
| 1182 |
/*
|
| 1183 |
* Read sys file-system device file
|
| 1184 |
*
|
| 1185 |
* @line address of buffer to put file contents in
|
| 1186 |
* @line_size size of line
|
| 1187 |
* @device_file path to device file (printf format string)
|
| 1188 |
* @device_name device being opened (inserted into device_file)
|
| 1189 |
*
|
| 1190 |
* @return 0 failed, 1 succeeded ('line' contains data)
|
| 1191 |
*/
|
| 1192 |
static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) |
| 1193 |
{
|
| 1194 |
#if 0
|
| 1195 |
Monitor *mon = cur_mon;
|
| 1196 |
#endif
|
| 1197 |
FILE *f; |
| 1198 |
int ret = 0; |
| 1199 |
char filename[PATH_MAX];
|
| 1200 |
|
| 1201 |
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
| 1202 |
device_file); |
| 1203 |
f = fopen(filename, "r");
|
| 1204 |
if (f) {
|
| 1205 |
fgets(line, line_size, f); |
| 1206 |
fclose(f); |
| 1207 |
ret = 1;
|
| 1208 |
#if 0
|
| 1209 |
} else {
|
| 1210 |
monitor_printf(mon, "husb: could not open %s\n", filename);
|
| 1211 |
#endif
|
| 1212 |
} |
| 1213 |
|
| 1214 |
return ret;
|
| 1215 |
} |
| 1216 |
|
| 1217 |
/*
|
| 1218 |
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
| 1219 |
* devices.
|
| 1220 |
*
|
| 1221 |
* This code is based on Robert Schiele's original patches posted to
|
| 1222 |
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
| 1223 |
*/
|
| 1224 |
static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
| 1225 |
{
|
| 1226 |
DIR *dir = NULL;
|
| 1227 |
char line[1024]; |
| 1228 |
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
| 1229 |
int ret = 0; |
| 1230 |
char product_name[512]; |
| 1231 |
struct dirent *de;
|
| 1232 |
|
| 1233 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
| 1234 |
if (!dir) {
|
| 1235 |
perror("husb: cannot open devices directory");
|
| 1236 |
goto the_end;
|
| 1237 |
} |
| 1238 |
|
| 1239 |
while ((de = readdir(dir))) {
|
| 1240 |
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
| 1241 |
char *tmpstr = de->d_name;
|
| 1242 |
if (!strncmp(de->d_name, "usb", 3)) |
| 1243 |
tmpstr += 3;
|
| 1244 |
bus_num = atoi(tmpstr); |
| 1245 |
|
| 1246 |
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) |
| 1247 |
goto the_end;
|
| 1248 |
if (sscanf(line, "%d", &addr) != 1) |
| 1249 |
goto the_end;
|
| 1250 |
|
| 1251 |
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
| 1252 |
de->d_name)) |
| 1253 |
goto the_end;
|
| 1254 |
if (sscanf(line, "%x", &class_id) != 1) |
| 1255 |
goto the_end;
|
| 1256 |
|
| 1257 |
if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name)) |
| 1258 |
goto the_end;
|
| 1259 |
if (sscanf(line, "%x", &vendor_id) != 1) |
| 1260 |
goto the_end;
|
| 1261 |
|
| 1262 |
if (!usb_host_read_file(line, sizeof(line), "idProduct", |
| 1263 |
de->d_name)) |
| 1264 |
goto the_end;
|
| 1265 |
if (sscanf(line, "%x", &product_id) != 1) |
| 1266 |
goto the_end;
|
| 1267 |
|
| 1268 |
if (!usb_host_read_file(line, sizeof(line), "product", |
| 1269 |
de->d_name)) {
|
| 1270 |
*product_name = 0;
|
| 1271 |
} else {
|
| 1272 |
if (strlen(line) > 0) |
| 1273 |
line[strlen(line) - 1] = '\0'; |
| 1274 |
pstrcpy(product_name, sizeof(product_name), line);
|
| 1275 |
} |
| 1276 |
|
| 1277 |
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) |
| 1278 |
goto the_end;
|
| 1279 |
if (!strcmp(line, "480\n")) |
| 1280 |
speed = USB_SPEED_HIGH; |
| 1281 |
else if (!strcmp(line, "1.5\n")) |
| 1282 |
speed = USB_SPEED_LOW; |
| 1283 |
else
|
| 1284 |
speed = USB_SPEED_FULL; |
| 1285 |
|
| 1286 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
| 1287 |
product_id, product_name, speed); |
| 1288 |
if (ret)
|
| 1289 |
goto the_end;
|
| 1290 |
} |
| 1291 |
} |
| 1292 |
the_end:
|
| 1293 |
if (dir)
|
| 1294 |
closedir(dir); |
| 1295 |
return ret;
|
| 1296 |
} |
| 1297 |
|
| 1298 |
/*
|
| 1299 |
* Determine how to access the host's USB devices and call the
|
| 1300 |
* specific support function.
|
| 1301 |
*/
|
| 1302 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
| 1303 |
{
|
| 1304 |
Monitor *mon = cur_mon; |
| 1305 |
FILE *f = NULL;
|
| 1306 |
DIR *dir = NULL;
|
| 1307 |
int ret = 0; |
| 1308 |
const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
| 1309 |
char devpath[PATH_MAX];
|
| 1310 |
|
| 1311 |
/* only check the host once */
|
| 1312 |
if (!usb_fs_type) {
|
| 1313 |
dir = opendir(USBSYSBUS_PATH "/devices");
|
| 1314 |
if (dir) {
|
| 1315 |
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
| 1316 |
strcpy(devpath, USBDEVBUS_PATH); |
| 1317 |
usb_fs_type = USB_FS_SYS; |
| 1318 |
closedir(dir); |
| 1319 |
dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
| 1320 |
goto found_devices;
|
| 1321 |
} |
| 1322 |
f = fopen(USBPROCBUS_PATH "/devices", "r"); |
| 1323 |
if (f) {
|
| 1324 |
/* devices found in /proc/bus/usb/ */
|
| 1325 |
strcpy(devpath, USBPROCBUS_PATH); |
| 1326 |
usb_fs_type = USB_FS_PROC; |
| 1327 |
fclose(f); |
| 1328 |
dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
| 1329 |
goto found_devices;
|
| 1330 |
} |
| 1331 |
/* try additional methods if an access method hasn't been found yet */
|
| 1332 |
f = fopen(USBDEVBUS_PATH "/devices", "r"); |
| 1333 |
if (f) {
|
| 1334 |
/* devices found in /dev/bus/usb/ */
|
| 1335 |
strcpy(devpath, USBDEVBUS_PATH); |
| 1336 |
usb_fs_type = USB_FS_DEV; |
| 1337 |
fclose(f); |
| 1338 |
dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
| 1339 |
goto found_devices;
|
| 1340 |
} |
| 1341 |
found_devices:
|
| 1342 |
if (!usb_fs_type) {
|
| 1343 |
monitor_printf(mon, "husb: unable to access USB devices\n");
|
| 1344 |
return -ENOENT;
|
| 1345 |
} |
| 1346 |
|
| 1347 |
/* the module setting (used later for opening devices) */
|
| 1348 |
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
| 1349 |
strcpy(usb_host_device_path, devpath); |
| 1350 |
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
| 1351 |
fs_type[usb_fs_type], usb_host_device_path); |
| 1352 |
} |
| 1353 |
|
| 1354 |
switch (usb_fs_type) {
|
| 1355 |
case USB_FS_PROC:
|
| 1356 |
case USB_FS_DEV:
|
| 1357 |
ret = usb_host_scan_dev(opaque, func); |
| 1358 |
break;
|
| 1359 |
case USB_FS_SYS:
|
| 1360 |
ret = usb_host_scan_sys(opaque, func); |
| 1361 |
break;
|
| 1362 |
default:
|
| 1363 |
ret = -EINVAL; |
| 1364 |
break;
|
| 1365 |
} |
| 1366 |
return ret;
|
| 1367 |
} |
| 1368 |
|
| 1369 |
static QEMUTimer *usb_auto_timer;
|
| 1370 |
|
| 1371 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
| 1372 |
int class_id, int vendor_id, int product_id, |
| 1373 |
const char *product_name, int speed) |
| 1374 |
{
|
| 1375 |
struct USBAutoFilter *f;
|
| 1376 |
struct USBHostDevice *s;
|
| 1377 |
|
| 1378 |
/* Ignore hubs */
|
| 1379 |
if (class_id == 9) |
| 1380 |
return 0; |
| 1381 |
|
| 1382 |
QTAILQ_FOREACH(s, &hostdevs, next) {
|
| 1383 |
f = &s->match; |
| 1384 |
|
| 1385 |
if (f->bus_num > 0 && f->bus_num != bus_num) |
| 1386 |
continue;
|
| 1387 |
|
| 1388 |
if (f->addr > 0 && f->addr != addr) |
| 1389 |
continue;
|
| 1390 |
|
| 1391 |
if (f->vendor_id > 0 && f->vendor_id != vendor_id) |
| 1392 |
continue;
|
| 1393 |
|
| 1394 |
if (f->product_id > 0 && f->product_id != product_id) |
| 1395 |
continue;
|
| 1396 |
|
| 1397 |
/* We got a match */
|
| 1398 |
|
| 1399 |
/* Already attached ? */
|
| 1400 |
if (s->fd != -1) |
| 1401 |
return 0; |
| 1402 |
|
| 1403 |
dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
| 1404 |
|
| 1405 |
usb_host_open(s, bus_num, addr, product_name); |
| 1406 |
} |
| 1407 |
|
| 1408 |
return 0; |
| 1409 |
} |
| 1410 |
|
| 1411 |
static void usb_host_auto_check(void *unused) |
| 1412 |
{
|
| 1413 |
struct USBHostDevice *s;
|
| 1414 |
int unconnected = 0; |
| 1415 |
|
| 1416 |
usb_host_scan(NULL, usb_host_auto_scan);
|
| 1417 |
|
| 1418 |
QTAILQ_FOREACH(s, &hostdevs, next) {
|
| 1419 |
if (s->fd == -1) |
| 1420 |
unconnected++; |
| 1421 |
} |
| 1422 |
|
| 1423 |
if (unconnected == 0) { |
| 1424 |
/* nothing to watch */
|
| 1425 |
if (usb_auto_timer)
|
| 1426 |
qemu_del_timer(usb_auto_timer); |
| 1427 |
return;
|
| 1428 |
} |
| 1429 |
|
| 1430 |
if (!usb_auto_timer) {
|
| 1431 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
|
| 1432 |
if (!usb_auto_timer)
|
| 1433 |
return;
|
| 1434 |
} |
| 1435 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
| 1436 |
} |
| 1437 |
|
| 1438 |
/*
|
| 1439 |
* Autoconnect filter
|
| 1440 |
* Format:
|
| 1441 |
* auto:bus:dev[:vid:pid]
|
| 1442 |
* auto:bus.dev[:vid:pid]
|
| 1443 |
*
|
| 1444 |
* bus - bus number (dec, * means any)
|
| 1445 |
* dev - device number (dec, * means any)
|
| 1446 |
* vid - vendor id (hex, * means any)
|
| 1447 |
* pid - product id (hex, * means any)
|
| 1448 |
*
|
| 1449 |
* See 'lsusb' output.
|
| 1450 |
*/
|
| 1451 |
static int parse_filter(const char *spec, struct USBAutoFilter *f) |
| 1452 |
{
|
| 1453 |
enum { BUS, DEV, VID, PID, DONE };
|
| 1454 |
const char *p = spec; |
| 1455 |
int i;
|
| 1456 |
|
| 1457 |
f->bus_num = 0;
|
| 1458 |
f->addr = 0;
|
| 1459 |
f->vendor_id = 0;
|
| 1460 |
f->product_id = 0;
|
| 1461 |
|
| 1462 |
for (i = BUS; i < DONE; i++) {
|
| 1463 |
p = strpbrk(p, ":.");
|
| 1464 |
if (!p) break; |
| 1465 |
p++; |
| 1466 |
|
| 1467 |
if (*p == '*') |
| 1468 |
continue;
|
| 1469 |
|
| 1470 |
switch(i) {
|
| 1471 |
case BUS: f->bus_num = strtol(p, NULL, 10); break; |
| 1472 |
case DEV: f->addr = strtol(p, NULL, 10); break; |
| 1473 |
case VID: f->vendor_id = strtol(p, NULL, 16); break; |
| 1474 |
case PID: f->product_id = strtol(p, NULL, 16); break; |
| 1475 |
} |
| 1476 |
} |
| 1477 |
|
| 1478 |
if (i < DEV) {
|
| 1479 |
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
| 1480 |
return -1; |
| 1481 |
} |
| 1482 |
|
| 1483 |
return 0; |
| 1484 |
} |
| 1485 |
|
| 1486 |
/**********************/
|
| 1487 |
/* USB host device info */
|
| 1488 |
|
| 1489 |
struct usb_class_info {
|
| 1490 |
int class;
|
| 1491 |
const char *class_name; |
| 1492 |
}; |
| 1493 |
|
| 1494 |
static const struct usb_class_info usb_class_info[] = { |
| 1495 |
{ USB_CLASS_AUDIO, "Audio"},
|
| 1496 |
{ USB_CLASS_COMM, "Communication"},
|
| 1497 |
{ USB_CLASS_HID, "HID"},
|
| 1498 |
{ USB_CLASS_HUB, "Hub" },
|
| 1499 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
| 1500 |
{ USB_CLASS_PRINTER, "Printer" },
|
| 1501 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
| 1502 |
{ USB_CLASS_CDC_DATA, "Data" },
|
| 1503 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
| 1504 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
| 1505 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
| 1506 |
{ USB_CLASS_CSCID, "Smart Card" },
|
| 1507 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
| 1508 |
{ -1, NULL }
|
| 1509 |
}; |
| 1510 |
|
| 1511 |
static const char *usb_class_str(uint8_t class) |
| 1512 |
{
|
| 1513 |
const struct usb_class_info *p; |
| 1514 |
for(p = usb_class_info; p->class != -1; p++) { |
| 1515 |
if (p->class == class)
|
| 1516 |
break;
|
| 1517 |
} |
| 1518 |
return p->class_name;
|
| 1519 |
} |
| 1520 |
|
| 1521 |
static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id, |
| 1522 |
int vendor_id, int product_id, |
| 1523 |
const char *product_name, |
| 1524 |
int speed)
|
| 1525 |
{
|
| 1526 |
const char *class_str, *speed_str; |
| 1527 |
|
| 1528 |
switch(speed) {
|
| 1529 |
case USB_SPEED_LOW:
|
| 1530 |
speed_str = "1.5";
|
| 1531 |
break;
|
| 1532 |
case USB_SPEED_FULL:
|
| 1533 |
speed_str = "12";
|
| 1534 |
break;
|
| 1535 |
case USB_SPEED_HIGH:
|
| 1536 |
speed_str = "480";
|
| 1537 |
break;
|
| 1538 |
default:
|
| 1539 |
speed_str = "?";
|
| 1540 |
break;
|
| 1541 |
} |
| 1542 |
|
| 1543 |
monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
|
| 1544 |
bus_num, addr, speed_str); |
| 1545 |
class_str = usb_class_str(class_id); |
| 1546 |
if (class_str)
|
| 1547 |
monitor_printf(mon, " %s:", class_str);
|
| 1548 |
else
|
| 1549 |
monitor_printf(mon, " Class %02x:", class_id);
|
| 1550 |
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
| 1551 |
if (product_name[0] != '\0') |
| 1552 |
monitor_printf(mon, ", %s", product_name);
|
| 1553 |
monitor_printf(mon, "\n");
|
| 1554 |
} |
| 1555 |
|
| 1556 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
| 1557 |
int class_id,
|
| 1558 |
int vendor_id, int product_id, |
| 1559 |
const char *product_name, |
| 1560 |
int speed)
|
| 1561 |
{
|
| 1562 |
Monitor *mon = opaque; |
| 1563 |
|
| 1564 |
usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id, |
| 1565 |
product_name, speed); |
| 1566 |
return 0; |
| 1567 |
} |
| 1568 |
|
| 1569 |
static void dec2str(int val, char *str, size_t size) |
| 1570 |
{
|
| 1571 |
if (val == 0) |
| 1572 |
snprintf(str, size, "*");
|
| 1573 |
else
|
| 1574 |
snprintf(str, size, "%d", val);
|
| 1575 |
} |
| 1576 |
|
| 1577 |
static void hex2str(int val, char *str, size_t size) |
| 1578 |
{
|
| 1579 |
if (val == 0) |
| 1580 |
snprintf(str, size, "*");
|
| 1581 |
else
|
| 1582 |
snprintf(str, size, "%04x", val);
|
| 1583 |
} |
| 1584 |
|
| 1585 |
void usb_host_info(Monitor *mon)
|
| 1586 |
{
|
| 1587 |
struct USBAutoFilter *f;
|
| 1588 |
struct USBHostDevice *s;
|
| 1589 |
|
| 1590 |
usb_host_scan(mon, usb_host_info_device); |
| 1591 |
|
| 1592 |
if (QTAILQ_EMPTY(&hostdevs))
|
| 1593 |
return;
|
| 1594 |
monitor_printf(mon, " Auto filters:\n");
|
| 1595 |
QTAILQ_FOREACH(s, &hostdevs, next) {
|
| 1596 |
char bus[10], addr[10], vid[10], pid[10]; |
| 1597 |
f = &s->match; |
| 1598 |
dec2str(f->bus_num, bus, sizeof(bus));
|
| 1599 |
dec2str(f->addr, addr, sizeof(addr));
|
| 1600 |
hex2str(f->vendor_id, vid, sizeof(vid));
|
| 1601 |
hex2str(f->product_id, pid, sizeof(pid));
|
| 1602 |
monitor_printf(mon, " Device %s.%s ID %s:%s\n",
|
| 1603 |
bus, addr, vid, pid); |
| 1604 |
} |
| 1605 |
} |