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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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* Magor rewrite to support fully async operation
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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" |
29 |
#include "qemu-timer.h" |
30 |
#include "hw/usb.h" |
31 |
#include "console.h" |
32 |
|
33 |
#if defined(__linux__)
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#include <dirent.h> |
35 |
#include <sys/ioctl.h> |
36 |
#include <linux/usbdevice_fs.h> |
37 |
#include <linux/version.h> |
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#include <signal.h> |
39 |
|
40 |
/* We redefine it to avoid version problems */
|
41 |
struct usb_ctrltransfer {
|
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uint8_t bRequestType; |
43 |
uint8_t bRequest; |
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uint16_t wValue; |
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uint16_t wIndex; |
46 |
uint16_t wLength; |
47 |
uint32_t timeout; |
48 |
void *data;
|
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}; |
50 |
|
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typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, |
52 |
int vendor_id, int product_id, |
53 |
const char *product_name, int speed); |
54 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
55 |
char *product_name, int product_name_size, |
56 |
const char *devname); |
57 |
|
58 |
//#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 USBDEVFS_PATH "/proc/bus/usb" |
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#define PRODUCT_NAME_SZ 32 |
68 |
#define MAX_ENDPOINTS 16 |
69 |
|
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struct sigaction sigact;
|
71 |
|
72 |
/* endpoint association data */
|
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struct endp_data {
|
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uint8_t type; |
75 |
uint8_t halted; |
76 |
}; |
77 |
|
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typedef struct USBHostDevice { |
79 |
USBDevice dev; |
80 |
int fd;
|
81 |
|
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uint8_t descr[1024];
|
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int descr_len;
|
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int configuration;
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int closing;
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|
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struct endp_data endp_table[MAX_ENDPOINTS];
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|
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/* Host side address */
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int bus_num;
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int addr;
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|
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struct USBHostDevice *next;
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} USBHostDevice; |
95 |
|
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static int is_isoc(USBHostDevice *s, int ep) |
97 |
{ |
98 |
return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
99 |
} |
100 |
|
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static int is_halted(USBHostDevice *s, int ep) |
102 |
{ |
103 |
return s->endp_table[ep - 1].halted; |
104 |
} |
105 |
|
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static void clear_halt(USBHostDevice *s, int ep) |
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{ |
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s->endp_table[ep - 1].halted = 0; |
109 |
} |
110 |
|
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static void set_halt(USBHostDevice *s, int ep) |
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{ |
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s->endp_table[ep - 1].halted = 1; |
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} |
115 |
|
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static USBHostDevice *hostdev_list;
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|
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static void hostdev_link(USBHostDevice *dev) |
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{ |
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dev->next = hostdev_list; |
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hostdev_list = dev; |
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} |
123 |
|
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static void hostdev_unlink(USBHostDevice *dev) |
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{ |
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USBHostDevice *pdev = hostdev_list; |
127 |
USBHostDevice **prev = &hostdev_list; |
128 |
|
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while (pdev) {
|
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if (pdev == dev) {
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*prev = dev->next; |
132 |
return;
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} |
134 |
|
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prev = &pdev->next; |
136 |
pdev = pdev->next; |
137 |
} |
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} |
139 |
|
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static USBHostDevice *hostdev_find(int bus_num, int addr) |
141 |
{ |
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USBHostDevice *s = hostdev_list; |
143 |
while (s) {
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if (s->bus_num == bus_num && s->addr == addr)
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return s;
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s = s->next; |
147 |
} |
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return NULL; |
149 |
} |
150 |
|
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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 |
157 |
{ |
158 |
struct usbdevfs_urb urb;
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struct usbdevfs_iso_packet_desc isocpd;
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|
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USBPacket *packet; |
162 |
USBHostDevice *hdev; |
163 |
} AsyncURB; |
164 |
|
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static AsyncURB *async_alloc(void) |
166 |
{ |
167 |
return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
168 |
} |
169 |
|
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static void async_free(AsyncURB *aurb) |
171 |
{ |
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qemu_free(aurb); |
173 |
} |
174 |
|
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static void async_complete(void *opaque) |
176 |
{ |
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USBHostDevice *s = opaque; |
178 |
AsyncURB *aurb; |
179 |
|
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while (1) { |
181 |
USBPacket *p; |
182 |
|
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int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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if (r < 0) { |
185 |
if (errno == EAGAIN)
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return;
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187 |
|
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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_device_del_addr(0, s->dev.addr);
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return;
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192 |
} |
193 |
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dprintf("husb: async. reap urb failed errno %d\n", errno);
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return;
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} |
197 |
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p = aurb->packet; |
199 |
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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); |
202 |
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if (p) {
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switch (aurb->urb.status) {
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case 0: |
206 |
p->len = aurb->urb.actual_length; |
207 |
break;
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208 |
|
209 |
case -EPIPE:
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set_halt(s, p->devep); |
211 |
/* fall through */
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default:
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p->len = USB_RET_NAK; |
214 |
break;
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} |
216 |
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usb_packet_complete(p); |
218 |
} |
219 |
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async_free(aurb); |
221 |
} |
222 |
} |
223 |
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static void async_cancel(USBPacket *unused, void *opaque) |
225 |
{ |
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AsyncURB *aurb = opaque; |
227 |
USBHostDevice *s = aurb->hdev; |
228 |
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dprintf("husb: async cancel. aurb %p\n", aurb);
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/* Mark it as dead (see async_complete above) */
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aurb->packet = NULL;
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int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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if (r < 0) { |
236 |
dprintf("husb: async. discard urb failed errno %d\n", errno);
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} |
238 |
} |
239 |
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static int usb_host_update_interfaces(USBHostDevice *dev, int configuration) |
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{ |
242 |
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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if (configuration == 0) /* address state - ignore */ |
247 |
return 1; |
248 |
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i = 0;
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dev_descr_len = dev->descr[0];
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if (dev_descr_len > dev->descr_len)
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goto fail;
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nb_configurations = dev->descr[17];
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i += dev_descr_len; |
256 |
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]);
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|
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if (dev->descr[i+1] != USB_DT_CONFIG) { |
261 |
i += dev->descr[i]; |
262 |
continue;
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} |
264 |
config_descr_len = dev->descr[i]; |
265 |
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printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
267 |
|
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if (configuration < 0 || configuration == dev->descr[i + 5]) |
269 |
break;
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270 |
|
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i += config_descr_len; |
272 |
} |
273 |
|
274 |
if (i >= dev->descr_len) {
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fprintf(stderr, "husb: update iface failed. no matching configuration\n");
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goto fail;
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} |
278 |
nb_interfaces = dev->descr[i + 4];
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|
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#ifdef USBDEVFS_DISCONNECT
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/* earlier Linux 2.4 do not support that */
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{ |
283 |
struct usbdevfs_ioctl ctrl;
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for (interface = 0; interface < nb_interfaces; interface++) { |
285 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
286 |
ctrl.ifno = interface; |
287 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
288 |
if (ret < 0 && errno != ENODATA) { |
289 |
perror("USBDEVFS_DISCONNECT");
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goto fail;
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291 |
} |
292 |
} |
293 |
} |
294 |
#endif
|
295 |
|
296 |
/* XXX: only grab if all interfaces are free */
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for (interface = 0; interface < nb_interfaces; interface++) { |
298 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
299 |
if (ret < 0) { |
300 |
if (errno == EBUSY) {
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301 |
printf("husb: update iface. device already grabbed\n");
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302 |
} else {
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303 |
perror("husb: failed to claim interface");
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304 |
} |
305 |
fail:
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306 |
return 0; |
307 |
} |
308 |
} |
309 |
|
310 |
printf("husb: %d interfaces claimed for configuration %d\n",
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311 |
nb_interfaces, configuration); |
312 |
|
313 |
return 1; |
314 |
} |
315 |
|
316 |
static void usb_host_handle_reset(USBDevice *dev) |
317 |
{ |
318 |
USBHostDevice *s = (USBHostDevice *)dev; |
319 |
|
320 |
dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
321 |
|
322 |
ioctl(s->fd, USBDEVFS_RESET); |
323 |
usb_host_update_interfaces(s, s->configuration); |
324 |
} |
325 |
|
326 |
static void usb_host_handle_destroy(USBDevice *dev) |
327 |
{ |
328 |
USBHostDevice *s = (USBHostDevice *)dev; |
329 |
|
330 |
s->closing = 1;
|
331 |
|
332 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
333 |
|
334 |
hostdev_unlink(s); |
335 |
|
336 |
async_complete(s); |
337 |
|
338 |
if (s->fd >= 0) |
339 |
close(s->fd); |
340 |
|
341 |
qemu_free(s); |
342 |
} |
343 |
|
344 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
345 |
|
346 |
static int usb_host_handle_control(USBDevice *dev, |
347 |
int request,
|
348 |
int value,
|
349 |
int index,
|
350 |
int length,
|
351 |
uint8_t *data) |
352 |
{ |
353 |
USBHostDevice *s = (USBHostDevice *)dev; |
354 |
struct usb_ctrltransfer ct;
|
355 |
struct usbdevfs_setinterface si;
|
356 |
int intf_update_required = 0; |
357 |
int ret;
|
358 |
|
359 |
if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
|
360 |
/* specific SET_ADDRESS support */
|
361 |
dev->addr = value; |
362 |
return 0; |
363 |
} else if (request == ((USB_RECIP_INTERFACE << 8) | |
364 |
USB_REQ_SET_INTERFACE)) { |
365 |
/* set alternate setting for the interface */
|
366 |
si.interface = index; |
367 |
si.altsetting = value; |
368 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
369 |
usb_linux_update_endp_table(s); |
370 |
} else if (request == (DeviceOutRequest | USB_REQ_SET_CONFIGURATION)) { |
371 |
dprintf("husb: ctrl set config %d\n", value & 0xff); |
372 |
if (s->configuration != (value & 0xff)) { |
373 |
s->configuration = (value & 0xff);
|
374 |
intf_update_required = 1;
|
375 |
} |
376 |
goto do_request;
|
377 |
} else {
|
378 |
do_request:
|
379 |
ct.bRequestType = request >> 8;
|
380 |
ct.bRequest = request; |
381 |
ct.wValue = value; |
382 |
ct.wIndex = index; |
383 |
ct.wLength = length; |
384 |
ct.timeout = 50;
|
385 |
ct.data = data; |
386 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
387 |
|
388 |
dprintf("husb: ctrl req 0x%x val 0x%x index %u len %u ret %d\n",
|
389 |
ct.bRequest, ct.wValue, ct.wIndex, ct.wLength, ret); |
390 |
} |
391 |
|
392 |
if (ret < 0) { |
393 |
switch(errno) {
|
394 |
case ETIMEDOUT:
|
395 |
return USB_RET_NAK;
|
396 |
default:
|
397 |
return USB_RET_STALL;
|
398 |
} |
399 |
} else {
|
400 |
if (intf_update_required) {
|
401 |
dprintf("husb: updating interfaces\n");
|
402 |
usb_host_update_interfaces(s, value & 0xff);
|
403 |
} |
404 |
return ret;
|
405 |
} |
406 |
} |
407 |
|
408 |
static int usb_host_handle_data(USBDevice *dev, USBPacket *p) |
409 |
{ |
410 |
USBHostDevice *s = (USBHostDevice *) dev; |
411 |
AsyncURB *aurb; |
412 |
struct usbdevfs_urb *urb;
|
413 |
int ret;
|
414 |
|
415 |
aurb = async_alloc(); |
416 |
if (!aurb) {
|
417 |
dprintf("husb: async malloc failed\n");
|
418 |
return USB_RET_NAK;
|
419 |
} |
420 |
aurb->hdev = s; |
421 |
aurb->packet = p; |
422 |
|
423 |
urb = &aurb->urb; |
424 |
|
425 |
if (p->pid == USB_TOKEN_IN)
|
426 |
urb->endpoint = p->devep | 0x80;
|
427 |
else
|
428 |
urb->endpoint = p->devep; |
429 |
|
430 |
if (is_halted(s, p->devep)) {
|
431 |
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
432 |
if (ret < 0) { |
433 |
dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
|
434 |
urb->endpoint, errno); |
435 |
return USB_RET_NAK;
|
436 |
} |
437 |
clear_halt(s, p->devep); |
438 |
} |
439 |
|
440 |
urb->buffer = p->data; |
441 |
urb->buffer_length = p->len; |
442 |
|
443 |
if (is_isoc(s, p->devep)) {
|
444 |
/* Setup ISOC transfer */
|
445 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
446 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
447 |
urb->number_of_packets = 1;
|
448 |
urb->iso_frame_desc[0].length = p->len;
|
449 |
} else {
|
450 |
/* Setup bulk transfer */
|
451 |
urb->type = USBDEVFS_URB_TYPE_BULK; |
452 |
} |
453 |
|
454 |
urb->usercontext = s; |
455 |
|
456 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
457 |
|
458 |
dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
|
459 |
|
460 |
if (ret < 0) { |
461 |
dprintf("husb: submit failed. errno %d\n", errno);
|
462 |
async_free(aurb); |
463 |
|
464 |
switch(errno) {
|
465 |
case ETIMEDOUT:
|
466 |
return USB_RET_NAK;
|
467 |
case EPIPE:
|
468 |
default:
|
469 |
return USB_RET_STALL;
|
470 |
} |
471 |
} |
472 |
|
473 |
usb_defer_packet(p, async_cancel, aurb); |
474 |
return USB_RET_ASYNC;
|
475 |
} |
476 |
|
477 |
/* returns 1 on problem encountered or 0 for success */
|
478 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
479 |
{ |
480 |
uint8_t *descriptors; |
481 |
uint8_t devep, type, configuration, alt_interface; |
482 |
struct usb_ctrltransfer ct;
|
483 |
int interface, ret, length, i;
|
484 |
|
485 |
ct.bRequestType = USB_DIR_IN; |
486 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
487 |
ct.wValue = 0;
|
488 |
ct.wIndex = 0;
|
489 |
ct.wLength = 1;
|
490 |
ct.data = &configuration; |
491 |
ct.timeout = 50;
|
492 |
|
493 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
494 |
if (ret < 0) { |
495 |
perror("usb_linux_update_endp_table");
|
496 |
return 1; |
497 |
} |
498 |
|
499 |
/* in address state */
|
500 |
if (configuration == 0) |
501 |
return 1; |
502 |
|
503 |
/* get the desired configuration, interface, and endpoint descriptors
|
504 |
* from device description */
|
505 |
descriptors = &s->descr[18];
|
506 |
length = s->descr_len - 18;
|
507 |
i = 0;
|
508 |
|
509 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
510 |
descriptors[i + 5] != configuration) {
|
511 |
dprintf("invalid descriptor data - configuration\n");
|
512 |
return 1; |
513 |
} |
514 |
i += descriptors[i]; |
515 |
|
516 |
while (i < length) {
|
517 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
518 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
519 |
descriptors[i + 4] == 0)) { |
520 |
i += descriptors[i]; |
521 |
continue;
|
522 |
} |
523 |
|
524 |
interface = descriptors[i + 2];
|
525 |
|
526 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
527 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
528 |
ct.wValue = 0;
|
529 |
ct.wIndex = interface; |
530 |
ct.wLength = 1;
|
531 |
ct.data = &alt_interface; |
532 |
ct.timeout = 50;
|
533 |
|
534 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
535 |
if (ret < 0) { |
536 |
perror("usb_linux_update_endp_table");
|
537 |
return 1; |
538 |
} |
539 |
|
540 |
/* the current interface descriptor is the active interface
|
541 |
* and has endpoints */
|
542 |
if (descriptors[i + 3] != alt_interface) { |
543 |
i += descriptors[i]; |
544 |
continue;
|
545 |
} |
546 |
|
547 |
/* advance to the endpoints */
|
548 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
549 |
i += descriptors[i]; |
550 |
|
551 |
if (i >= length)
|
552 |
break;
|
553 |
|
554 |
while (i < length) {
|
555 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) |
556 |
break;
|
557 |
|
558 |
devep = descriptors[i + 2];
|
559 |
switch (descriptors[i + 3] & 0x3) { |
560 |
case 0x00: |
561 |
type = USBDEVFS_URB_TYPE_CONTROL; |
562 |
break;
|
563 |
case 0x01: |
564 |
type = USBDEVFS_URB_TYPE_ISO; |
565 |
break;
|
566 |
case 0x02: |
567 |
type = USBDEVFS_URB_TYPE_BULK; |
568 |
break;
|
569 |
case 0x03: |
570 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
571 |
break;
|
572 |
default:
|
573 |
dprintf("usb_host: malformed endpoint type\n");
|
574 |
type = USBDEVFS_URB_TYPE_BULK; |
575 |
} |
576 |
s->endp_table[(devep & 0xf) - 1].type = type; |
577 |
s->endp_table[(devep & 0xf) - 1].halted = 0; |
578 |
|
579 |
i += descriptors[i]; |
580 |
} |
581 |
} |
582 |
return 0; |
583 |
} |
584 |
|
585 |
static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) |
586 |
{ |
587 |
int fd = -1, ret; |
588 |
USBHostDevice *dev = NULL;
|
589 |
struct usbdevfs_connectinfo ci;
|
590 |
char buf[1024]; |
591 |
|
592 |
dev = qemu_mallocz(sizeof(USBHostDevice));
|
593 |
if (!dev)
|
594 |
goto fail;
|
595 |
|
596 |
dev->bus_num = bus_num; |
597 |
dev->addr = addr; |
598 |
|
599 |
printf("husb: open device %d.%d\n", bus_num, addr);
|
600 |
|
601 |
snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d", |
602 |
bus_num, addr); |
603 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
604 |
if (fd < 0) { |
605 |
perror(buf); |
606 |
goto fail;
|
607 |
} |
608 |
|
609 |
/* read the device description */
|
610 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
611 |
if (dev->descr_len <= 0) { |
612 |
perror("husb: reading device data failed");
|
613 |
goto fail;
|
614 |
} |
615 |
|
616 |
#ifdef DEBUG
|
617 |
{ |
618 |
int x;
|
619 |
printf("=== begin dumping device descriptor data ===\n");
|
620 |
for (x = 0; x < dev->descr_len; x++) |
621 |
printf("%02x ", dev->descr[x]);
|
622 |
printf("\n=== end dumping device descriptor data ===\n");
|
623 |
} |
624 |
#endif
|
625 |
|
626 |
dev->fd = fd; |
627 |
dev->configuration = 1;
|
628 |
|
629 |
/* XXX - do something about initial configuration */
|
630 |
if (!usb_host_update_interfaces(dev, -1)) |
631 |
goto fail;
|
632 |
|
633 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
634 |
if (ret < 0) { |
635 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
636 |
goto fail;
|
637 |
} |
638 |
|
639 |
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
640 |
|
641 |
ret = usb_linux_update_endp_table(dev); |
642 |
if (ret)
|
643 |
goto fail;
|
644 |
|
645 |
if (ci.slow)
|
646 |
dev->dev.speed = USB_SPEED_LOW; |
647 |
else
|
648 |
dev->dev.speed = USB_SPEED_HIGH; |
649 |
dev->dev.handle_packet = usb_generic_handle_packet; |
650 |
|
651 |
dev->dev.handle_reset = usb_host_handle_reset; |
652 |
dev->dev.handle_control = usb_host_handle_control; |
653 |
dev->dev.handle_data = usb_host_handle_data; |
654 |
dev->dev.handle_destroy = usb_host_handle_destroy; |
655 |
|
656 |
if (!prod_name || prod_name[0] == '\0') |
657 |
snprintf(dev->dev.devname, sizeof(dev->dev.devname),
|
658 |
"host:%d.%d", bus_num, addr);
|
659 |
else
|
660 |
pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
|
661 |
prod_name); |
662 |
|
663 |
/* USB devio uses 'write' flag to check for async completions */
|
664 |
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
665 |
|
666 |
hostdev_link(dev); |
667 |
|
668 |
return (USBDevice *) dev;
|
669 |
|
670 |
fail:
|
671 |
if (dev)
|
672 |
qemu_free(dev); |
673 |
|
674 |
close(fd); |
675 |
return NULL; |
676 |
} |
677 |
|
678 |
USBDevice *usb_host_device_open(const char *devname) |
679 |
{ |
680 |
int bus_num, addr;
|
681 |
char product_name[PRODUCT_NAME_SZ];
|
682 |
|
683 |
if (usb_host_find_device(&bus_num, &addr,
|
684 |
product_name, sizeof(product_name),
|
685 |
devname) < 0)
|
686 |
return NULL; |
687 |
|
688 |
if (hostdev_find(bus_num, addr)) {
|
689 |
term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
|
690 |
return NULL; |
691 |
} |
692 |
|
693 |
return usb_host_device_open_addr(bus_num, addr, product_name);
|
694 |
} |
695 |
|
696 |
static int get_tag_value(char *buf, int buf_size, |
697 |
const char *str, const char *tag, |
698 |
const char *stopchars) |
699 |
{ |
700 |
const char *p; |
701 |
char *q;
|
702 |
p = strstr(str, tag); |
703 |
if (!p)
|
704 |
return -1; |
705 |
p += strlen(tag); |
706 |
while (isspace(*p))
|
707 |
p++; |
708 |
q = buf; |
709 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
710 |
if ((q - buf) < (buf_size - 1)) |
711 |
*q++ = *p; |
712 |
p++; |
713 |
} |
714 |
*q = '\0';
|
715 |
return q - buf;
|
716 |
} |
717 |
|
718 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
719 |
{ |
720 |
FILE *f; |
721 |
char line[1024]; |
722 |
char buf[1024]; |
723 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
724 |
int ret;
|
725 |
char product_name[512]; |
726 |
|
727 |
f = fopen(USBDEVFS_PATH "/devices", "r"); |
728 |
if (!f) {
|
729 |
term_printf("husb: could not open %s\n", USBDEVFS_PATH "/devices"); |
730 |
return 0; |
731 |
} |
732 |
device_count = 0;
|
733 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
734 |
ret = 0;
|
735 |
for(;;) {
|
736 |
if (fgets(line, sizeof(line), f) == NULL) |
737 |
break;
|
738 |
if (strlen(line) > 0) |
739 |
line[strlen(line) - 1] = '\0'; |
740 |
if (line[0] == 'T' && line[1] == ':') { |
741 |
if (device_count && (vendor_id || product_id)) {
|
742 |
/* New device. Add the previously discovered device. */
|
743 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
744 |
product_id, product_name, speed); |
745 |
if (ret)
|
746 |
goto the_end;
|
747 |
} |
748 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
749 |
goto fail;
|
750 |
bus_num = atoi(buf); |
751 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
752 |
goto fail;
|
753 |
addr = atoi(buf); |
754 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
755 |
goto fail;
|
756 |
if (!strcmp(buf, "480")) |
757 |
speed = USB_SPEED_HIGH; |
758 |
else if (!strcmp(buf, "1.5")) |
759 |
speed = USB_SPEED_LOW; |
760 |
else
|
761 |
speed = USB_SPEED_FULL; |
762 |
product_name[0] = '\0'; |
763 |
class_id = 0xff;
|
764 |
device_count++; |
765 |
product_id = 0;
|
766 |
vendor_id = 0;
|
767 |
} else if (line[0] == 'P' && line[1] == ':') { |
768 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
769 |
goto fail;
|
770 |
vendor_id = strtoul(buf, NULL, 16); |
771 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
772 |
goto fail;
|
773 |
product_id = strtoul(buf, NULL, 16); |
774 |
} else if (line[0] == 'S' && line[1] == ':') { |
775 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
776 |
goto fail;
|
777 |
pstrcpy(product_name, sizeof(product_name), buf);
|
778 |
} else if (line[0] == 'D' && line[1] == ':') { |
779 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
780 |
goto fail;
|
781 |
class_id = strtoul(buf, NULL, 16); |
782 |
} |
783 |
fail: ;
|
784 |
} |
785 |
if (device_count && (vendor_id || product_id)) {
|
786 |
/* Add the last device. */
|
787 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
788 |
product_id, product_name, speed); |
789 |
} |
790 |
the_end:
|
791 |
fclose(f); |
792 |
return ret;
|
793 |
} |
794 |
|
795 |
struct USBAutoFilter {
|
796 |
struct USBAutoFilter *next;
|
797 |
int bus_num;
|
798 |
int addr;
|
799 |
int vendor_id;
|
800 |
int product_id;
|
801 |
}; |
802 |
|
803 |
static QEMUTimer *usb_auto_timer;
|
804 |
static struct USBAutoFilter *usb_auto_filter; |
805 |
|
806 |
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
807 |
int class_id, int vendor_id, int product_id, |
808 |
const char *product_name, int speed) |
809 |
{ |
810 |
struct USBAutoFilter *f;
|
811 |
struct USBDevice *dev;
|
812 |
|
813 |
/* Ignore hubs */
|
814 |
if (class_id == 9) |
815 |
return 0; |
816 |
|
817 |
for (f = usb_auto_filter; f; f = f->next) {
|
818 |
if (f->bus_num >= 0 && f->bus_num != bus_num) |
819 |
continue;
|
820 |
|
821 |
if (f->addr >= 0 && f->addr != addr) |
822 |
continue;
|
823 |
|
824 |
if (f->vendor_id >= 0 && f->vendor_id != vendor_id) |
825 |
continue;
|
826 |
|
827 |
if (f->product_id >= 0 && f->product_id != product_id) |
828 |
continue;
|
829 |
|
830 |
/* We got a match */
|
831 |
|
832 |
/* Allredy attached ? */
|
833 |
if (hostdev_find(bus_num, addr))
|
834 |
return 0; |
835 |
|
836 |
dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
837 |
|
838 |
dev = usb_host_device_open_addr(bus_num, addr, product_name); |
839 |
if (dev)
|
840 |
usb_device_add_dev(dev); |
841 |
} |
842 |
|
843 |
return 0; |
844 |
} |
845 |
|
846 |
static void usb_host_auto_timer(void *unused) |
847 |
{ |
848 |
usb_host_scan(NULL, usb_host_auto_scan);
|
849 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
850 |
} |
851 |
|
852 |
/*
|
853 |
* Add autoconnect filter
|
854 |
* -1 means 'any' (device, vendor, etc)
|
855 |
*/
|
856 |
static void usb_host_auto_add(int bus_num, int addr, int vendor_id, int product_id) |
857 |
{ |
858 |
struct USBAutoFilter *f = qemu_mallocz(sizeof(*f)); |
859 |
if (!f) {
|
860 |
fprintf(stderr, "husb: failed to allocate auto filter\n");
|
861 |
return;
|
862 |
} |
863 |
|
864 |
f->bus_num = bus_num; |
865 |
f->addr = addr; |
866 |
f->vendor_id = vendor_id; |
867 |
f->product_id = product_id; |
868 |
|
869 |
if (!usb_auto_filter) {
|
870 |
/*
|
871 |
* First entry. Init and start the monitor.
|
872 |
* Right now we're using timer to check for new devices.
|
873 |
* If this turns out to be too expensive we can move that into a
|
874 |
* separate thread.
|
875 |
*/
|
876 |
usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
|
877 |
if (!usb_auto_timer) {
|
878 |
fprintf(stderr, "husb: failed to allocate auto scan timer\n");
|
879 |
qemu_free(f); |
880 |
return;
|
881 |
} |
882 |
|
883 |
/* Check for new devices every two seconds */
|
884 |
qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
885 |
} |
886 |
|
887 |
dprintf("husb: auto filter: bus_num %d addr %d vid %d pid %d\n",
|
888 |
bus_num, addr, vendor_id, product_id); |
889 |
|
890 |
f->next = usb_auto_filter; |
891 |
usb_auto_filter = f; |
892 |
} |
893 |
|
894 |
typedef struct FindDeviceState { |
895 |
int vendor_id;
|
896 |
int product_id;
|
897 |
int bus_num;
|
898 |
int addr;
|
899 |
char product_name[PRODUCT_NAME_SZ];
|
900 |
} FindDeviceState; |
901 |
|
902 |
static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
903 |
int class_id,
|
904 |
int vendor_id, int product_id, |
905 |
const char *product_name, int speed) |
906 |
{ |
907 |
FindDeviceState *s = opaque; |
908 |
if ((vendor_id == s->vendor_id &&
|
909 |
product_id == s->product_id) || |
910 |
(bus_num == s->bus_num && |
911 |
addr == s->addr)) { |
912 |
pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
913 |
s->bus_num = bus_num; |
914 |
s->addr = addr; |
915 |
return 1; |
916 |
} else {
|
917 |
return 0; |
918 |
} |
919 |
} |
920 |
|
921 |
/* the syntax is :
|
922 |
'bus.addr' (decimal numbers) or
|
923 |
'vendor_id:product_id' (hexa numbers) */
|
924 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
925 |
char *product_name, int product_name_size, |
926 |
const char *devname) |
927 |
{ |
928 |
const char *p; |
929 |
int ret;
|
930 |
FindDeviceState fs; |
931 |
|
932 |
p = strchr(devname, '.');
|
933 |
if (p) {
|
934 |
*pbus_num = strtoul(devname, NULL, 0); |
935 |
|
936 |
if (*(p + 1) == '*') { |
937 |
usb_host_auto_add(*pbus_num, -1, -1, -1); |
938 |
return -1; |
939 |
} |
940 |
|
941 |
*paddr = strtoul(p + 1, NULL, 0); |
942 |
fs.bus_num = *pbus_num; |
943 |
fs.addr = *paddr; |
944 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
945 |
if (ret)
|
946 |
pstrcpy(product_name, product_name_size, fs.product_name); |
947 |
return 0; |
948 |
} |
949 |
p = strchr(devname, ':');
|
950 |
if (p) {
|
951 |
fs.vendor_id = strtoul(devname, NULL, 16); |
952 |
|
953 |
if (*(p + 1) == '*') { |
954 |
usb_host_auto_add(-1, -1, fs.vendor_id, -1); |
955 |
return -1; |
956 |
} |
957 |
|
958 |
fs.product_id = strtoul(p + 1, NULL, 16); |
959 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
960 |
if (ret) {
|
961 |
*pbus_num = fs.bus_num; |
962 |
*paddr = fs.addr; |
963 |
pstrcpy(product_name, product_name_size, fs.product_name); |
964 |
return 0; |
965 |
} |
966 |
} |
967 |
return -1; |
968 |
} |
969 |
|
970 |
/**********************/
|
971 |
/* USB host device info */
|
972 |
|
973 |
struct usb_class_info {
|
974 |
int class;
|
975 |
const char *class_name; |
976 |
}; |
977 |
|
978 |
static const struct usb_class_info usb_class_info[] = { |
979 |
{ USB_CLASS_AUDIO, "Audio"},
|
980 |
{ USB_CLASS_COMM, "Communication"},
|
981 |
{ USB_CLASS_HID, "HID"},
|
982 |
{ USB_CLASS_HUB, "Hub" },
|
983 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
984 |
{ USB_CLASS_PRINTER, "Printer" },
|
985 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
986 |
{ USB_CLASS_CDC_DATA, "Data" },
|
987 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
988 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
989 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
990 |
{ USB_CLASS_CSCID, "Smart Card" },
|
991 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
992 |
{ -1, NULL } |
993 |
}; |
994 |
|
995 |
static const char *usb_class_str(uint8_t class) |
996 |
{ |
997 |
const struct usb_class_info *p; |
998 |
for(p = usb_class_info; p->class != -1; p++) { |
999 |
if (p->class == class)
|
1000 |
break;
|
1001 |
} |
1002 |
return p->class_name;
|
1003 |
} |
1004 |
|
1005 |
static void usb_info_device(int bus_num, int addr, int class_id, |
1006 |
int vendor_id, int product_id, |
1007 |
const char *product_name, |
1008 |
int speed)
|
1009 |
{ |
1010 |
const char *class_str, *speed_str; |
1011 |
|
1012 |
switch(speed) {
|
1013 |
case USB_SPEED_LOW:
|
1014 |
speed_str = "1.5";
|
1015 |
break;
|
1016 |
case USB_SPEED_FULL:
|
1017 |
speed_str = "12";
|
1018 |
break;
|
1019 |
case USB_SPEED_HIGH:
|
1020 |
speed_str = "480";
|
1021 |
break;
|
1022 |
default:
|
1023 |
speed_str = "?";
|
1024 |
break;
|
1025 |
} |
1026 |
|
1027 |
term_printf(" Device %d.%d, speed %s Mb/s\n",
|
1028 |
bus_num, addr, speed_str); |
1029 |
class_str = usb_class_str(class_id); |
1030 |
if (class_str)
|
1031 |
term_printf(" %s:", class_str);
|
1032 |
else
|
1033 |
term_printf(" Class %02x:", class_id);
|
1034 |
term_printf(" USB device %04x:%04x", vendor_id, product_id);
|
1035 |
if (product_name[0] != '\0') |
1036 |
term_printf(", %s", product_name);
|
1037 |
term_printf("\n");
|
1038 |
} |
1039 |
|
1040 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
1041 |
int class_id,
|
1042 |
int vendor_id, int product_id, |
1043 |
const char *product_name, |
1044 |
int speed)
|
1045 |
{ |
1046 |
usb_info_device(bus_num, addr, class_id, vendor_id, product_id, |
1047 |
product_name, speed); |
1048 |
return 0; |
1049 |
} |
1050 |
|
1051 |
void usb_host_info(void) |
1052 |
{ |
1053 |
usb_host_scan(NULL, usb_host_info_device);
|
1054 |
} |
1055 |
|
1056 |
#else
|
1057 |
|
1058 |
void usb_host_info(void) |
1059 |
{ |
1060 |
term_printf("USB host devices not supported\n");
|
1061 |
} |
1062 |
|
1063 |
/* XXX: modify configure to compile the right host driver */
|
1064 |
USBDevice *usb_host_device_open(const char *devname) |
1065 |
{ |
1066 |
return NULL; |
1067 |
} |
1068 |
|
1069 |
#endif
|