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host-libusb.c
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host-libusb.c
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/*
* Linux host USB redirector
*
* Copyright (c) 2005 Fabrice Bellard
*
* Copyright (c) 2008 Max Krasnyansky
* Support for host device auto connect & disconnect
* Major rewrite to support fully async operation
*
* Copyright 2008 TJ <linux@tjworld.net>
* Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
* to the legacy /proc/bus/usb USB device discovery and handling
*
* (c) 2012 Gerd Hoffmann <kraxel@redhat.com>
* Completely rewritten to use libusb instead of usbfs ioctls.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qom/object.h"
#ifndef CONFIG_WIN32
#include <poll.h>
#endif
#include <libusb.h>
#ifdef CONFIG_LINUX
#include <sys/ioctl.h>
#include <linux/usbdevice_fs.h>
#endif
#include "qapi/error.h"
#include "migration/vmstate.h"
#include "monitor/monitor.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "trace.h"
#include "hw/qdev-properties.h"
#include "hw/usb.h"
/* ------------------------------------------------------------------------ */
#define TYPE_USB_HOST_DEVICE "usb-host"
OBJECT_DECLARE_SIMPLE_TYPE(USBHostDevice, USB_HOST_DEVICE)
typedef struct USBHostRequest USBHostRequest;
typedef struct USBHostIsoXfer USBHostIsoXfer;
typedef struct USBHostIsoRing USBHostIsoRing;
struct USBAutoFilter {
uint32_t bus_num;
uint32_t addr;
char *port;
uint32_t vendor_id;
uint32_t product_id;
};
enum USBHostDeviceOptions {
USB_HOST_OPT_PIPELINE,
};
struct USBHostDevice {
USBDevice parent_obj;
/* properties */
struct USBAutoFilter match;
char *hostdevice;
int32_t bootindex;
uint32_t iso_urb_count;
uint32_t iso_urb_frames;
uint32_t options;
uint32_t loglevel;
bool needs_autoscan;
bool allow_one_guest_reset;
bool allow_all_guest_resets;
bool suppress_remote_wake;
/* state */
QTAILQ_ENTRY(USBHostDevice) next;
int seen, errcount;
int bus_num;
int addr;
char port[16];
int hostfd;
libusb_device *dev;
libusb_device_handle *dh;
struct libusb_device_descriptor ddesc;
struct {
bool detached;
bool claimed;
} ifs[USB_MAX_INTERFACES];
/* callbacks & friends */
QEMUBH *bh_nodev;
QEMUBH *bh_postld;
bool bh_postld_pending;
Notifier exit;
/* request queues */
QTAILQ_HEAD(, USBHostRequest) requests;
QTAILQ_HEAD(, USBHostIsoRing) isorings;
};
struct USBHostRequest {
USBHostDevice *host;
USBPacket *p;
bool in;
struct libusb_transfer *xfer;
unsigned char *buffer;
unsigned char *cbuf;
unsigned int clen;
bool usb3ep0quirk;
QTAILQ_ENTRY(USBHostRequest) next;
};
struct USBHostIsoXfer {
USBHostIsoRing *ring;
struct libusb_transfer *xfer;
bool copy_complete;
unsigned int packet;
QTAILQ_ENTRY(USBHostIsoXfer) next;
};
struct USBHostIsoRing {
USBHostDevice *host;
USBEndpoint *ep;
QTAILQ_HEAD(, USBHostIsoXfer) unused;
QTAILQ_HEAD(, USBHostIsoXfer) inflight;
QTAILQ_HEAD(, USBHostIsoXfer) copy;
QTAILQ_ENTRY(USBHostIsoRing) next;
};
static QTAILQ_HEAD(, USBHostDevice) hostdevs =
QTAILQ_HEAD_INITIALIZER(hostdevs);
static void usb_host_auto_check(void *unused);
static void usb_host_release_interfaces(USBHostDevice *s);
static void usb_host_nodev(USBHostDevice *s);
static void usb_host_detach_kernel(USBHostDevice *s);
static void usb_host_attach_kernel(USBHostDevice *s);
/* ------------------------------------------------------------------------ */
#ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
#define LIBUSB_LOG_LEVEL_WARNING 2
#endif
/* ------------------------------------------------------------------------ */
#define CONTROL_TIMEOUT 10000 /* 10 sec */
#define BULK_TIMEOUT 0 /* unlimited */
#define INTR_TIMEOUT 0 /* unlimited */
#ifndef LIBUSB_API_VERSION
# define LIBUSB_API_VERSION LIBUSBX_API_VERSION
#endif
#if LIBUSB_API_VERSION >= 0x01000103
# define HAVE_STREAMS 1
#endif
#if LIBUSB_API_VERSION >= 0x01000106
# define HAVE_SUPER_PLUS 1
#endif
static const char *speed_name[] = {
[LIBUSB_SPEED_UNKNOWN] = "?",
[LIBUSB_SPEED_LOW] = "1.5",
[LIBUSB_SPEED_FULL] = "12",
[LIBUSB_SPEED_HIGH] = "480",
[LIBUSB_SPEED_SUPER] = "5000",
#ifdef HAVE_SUPER_PLUS
[LIBUSB_SPEED_SUPER_PLUS] = "5000+",
#endif
};
static const unsigned int speed_map[] = {
[LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
[LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
[LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
[LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
#ifdef HAVE_SUPER_PLUS
[LIBUSB_SPEED_SUPER_PLUS] = USB_SPEED_SUPER,
#endif
};
static const unsigned int status_map[] = {
[LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
[LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
[LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
[LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
[LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
[LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
[LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
};
static const char *err_names[] = {
[-LIBUSB_ERROR_IO] = "IO",
[-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
[-LIBUSB_ERROR_ACCESS] = "ACCESS",
[-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
[-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
[-LIBUSB_ERROR_BUSY] = "BUSY",
[-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
[-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
[-LIBUSB_ERROR_PIPE] = "PIPE",
[-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
[-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
[-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
[-LIBUSB_ERROR_OTHER] = "OTHER",
};
static libusb_context *ctx;
static uint32_t loglevel;
#ifndef CONFIG_WIN32
static void usb_host_handle_fd(void *opaque)
{
struct timeval tv = { 0, 0 };
libusb_handle_events_timeout(ctx, &tv);
}
static void usb_host_add_fd(int fd, short events, void *user_data)
{
qemu_set_fd_handler(fd,
(events & POLLIN) ? usb_host_handle_fd : NULL,
(events & POLLOUT) ? usb_host_handle_fd : NULL,
ctx);
}
static void usb_host_del_fd(int fd, void *user_data)
{
qemu_set_fd_handler(fd, NULL, NULL, NULL);
}
#endif /* !CONFIG_WIN32 */
static int usb_host_init(void)
{
#ifndef CONFIG_WIN32
const struct libusb_pollfd **poll;
#endif
int rc;
if (ctx) {
return 0;
}
rc = libusb_init(&ctx);
if (rc != 0) {
return -1;
}
#if LIBUSB_API_VERSION >= 0x01000106
libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, loglevel);
#else
libusb_set_debug(ctx, loglevel);
#endif
#ifdef CONFIG_WIN32
/* FIXME: add support for Windows. */
#else
libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
usb_host_del_fd,
ctx);
poll = libusb_get_pollfds(ctx);
if (poll) {
int i;
for (i = 0; poll[i] != NULL; i++) {
usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
}
}
free(poll);
#endif
return 0;
}
static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
{
uint8_t path[7];
size_t off;
int rc, i;
#if LIBUSB_API_VERSION >= 0x01000102
rc = libusb_get_port_numbers(dev, path, 7);
#else
rc = libusb_get_port_path(ctx, dev, path, 7);
#endif
if (rc < 0) {
return 0;
}
off = snprintf(port, len, "%d", path[0]);
for (i = 1; i < rc; i++) {
off += snprintf(port+off, len-off, ".%d", path[i]);
}
return off;
}
static void usb_host_libusb_error(const char *func, int rc)
{
const char *errname;
if (rc >= 0) {
return;
}
if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
errname = err_names[-rc];
} else {
errname = "?";
}
error_report("%s: %d [%s]", func, rc, errname);
}
/* ------------------------------------------------------------------------ */
static bool usb_host_use_combining(USBEndpoint *ep)
{
int type;
if (!ep->pipeline) {
return false;
}
if (ep->pid != USB_TOKEN_IN) {
return false;
}
type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
if (type != USB_ENDPOINT_XFER_BULK) {
return false;
}
return true;
}
/* ------------------------------------------------------------------------ */
static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
bool in, size_t bufsize)
{
USBHostRequest *r = g_new0(USBHostRequest, 1);
r->host = s;
r->p = p;
r->in = in;
r->xfer = libusb_alloc_transfer(0);
if (bufsize) {
r->buffer = g_malloc(bufsize);
}
QTAILQ_INSERT_TAIL(&s->requests, r, next);
return r;
}
static void usb_host_req_free(USBHostRequest *r)
{
QTAILQ_REMOVE(&r->host->requests, r, next);
libusb_free_transfer(r->xfer);
g_free(r->buffer);
g_free(r);
}
static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
{
USBHostRequest *r;
QTAILQ_FOREACH(r, &s->requests, next) {
if (r->p == p) {
return r;
}
}
return NULL;
}
static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
{
USBHostRequest *r = xfer->user_data;
USBHostDevice *s = r->host;
bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
if (r->p == NULL) {
goto out; /* request was canceled */
}
r->p->status = status_map[xfer->status];
r->p->actual_length = xfer->actual_length;
if (r->in && xfer->actual_length) {
USBDevice *udev = USB_DEVICE(s);
struct libusb_config_descriptor *conf = (void *)r->cbuf;
memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
/* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
* to work redirected to a not superspeed capable hcd */
if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
r->cbuf[7] == 9) {
r->cbuf[7] = 64;
}
/*
*If this is GET_DESCRIPTOR request for configuration descriptor,
* remove 'remote wakeup' flag from it to prevent idle power down
* in Windows guest
*/
if (s->suppress_remote_wake &&
udev->setup_buf[0] == USB_DIR_IN &&
udev->setup_buf[1] == USB_REQ_GET_DESCRIPTOR &&
udev->setup_buf[3] == USB_DT_CONFIG && udev->setup_buf[2] == 0 &&
xfer->actual_length >
offsetof(struct libusb_config_descriptor, bmAttributes) &&
(conf->bmAttributes & USB_CFG_ATT_WAKEUP)) {
trace_usb_host_remote_wakeup_removed(s->bus_num, s->addr);
conf->bmAttributes &= ~USB_CFG_ATT_WAKEUP;
}
}
trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
r->p->status, r->p->actual_length);
usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
out:
usb_host_req_free(r);
if (disconnect) {
usb_host_nodev(s);
}
}
static void LIBUSB_CALL usb_host_req_complete_data(struct libusb_transfer *xfer)
{
USBHostRequest *r = xfer->user_data;
USBHostDevice *s = r->host;
bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
if (r->p == NULL) {
goto out; /* request was canceled */
}
r->p->status = status_map[xfer->status];
if (r->in && xfer->actual_length) {
usb_packet_copy(r->p, r->buffer, xfer->actual_length);
}
trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
r->p->status, r->p->actual_length);
if (usb_host_use_combining(r->p->ep)) {
usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
} else {
usb_packet_complete(USB_DEVICE(s), r->p);
}
out:
usb_host_req_free(r);
if (disconnect) {
usb_host_nodev(s);
}
}
static void usb_host_req_abort(USBHostRequest *r)
{
USBHostDevice *s = r->host;
bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
if (inflight) {
r->p->status = USB_RET_NODEV;
trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
r->p->status, r->p->actual_length);
if (r->p->ep->nr == 0) {
usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
} else {
usb_packet_complete(USB_DEVICE(s), r->p);
}
r->p = NULL;
libusb_cancel_transfer(r->xfer);
}
}
/* ------------------------------------------------------------------------ */
static void LIBUSB_CALL
usb_host_req_complete_iso(struct libusb_transfer *transfer)
{
USBHostIsoXfer *xfer = transfer->user_data;
if (!xfer) {
/* USBHostIsoXfer released while inflight */
g_free(transfer->buffer);
libusb_free_transfer(transfer);
return;
}
QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
USBHostDevice *s = xfer->ring->host;
trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
}
if (xfer->ring->ep->pid == USB_TOKEN_IN) {
QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
usb_wakeup(xfer->ring->ep, 0);
} else {
QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
}
}
static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
{
USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
USBHostIsoXfer *xfer;
/* FIXME: check interval (for now assume one xfer per frame) */
int packets = s->iso_urb_frames;
int i;
ring->host = s;
ring->ep = ep;
QTAILQ_INIT(&ring->unused);
QTAILQ_INIT(&ring->inflight);
QTAILQ_INIT(&ring->copy);
QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
for (i = 0; i < s->iso_urb_count; i++) {
xfer = g_new0(USBHostIsoXfer, 1);
xfer->ring = ring;
xfer->xfer = libusb_alloc_transfer(packets);
xfer->xfer->dev_handle = s->dh;
xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
xfer->xfer->endpoint = ring->ep->nr;
if (ring->ep->pid == USB_TOKEN_IN) {
xfer->xfer->endpoint |= USB_DIR_IN;
}
xfer->xfer->callback = usb_host_req_complete_iso;
xfer->xfer->user_data = xfer;
xfer->xfer->num_iso_packets = packets;
xfer->xfer->length = ring->ep->max_packet_size * packets;
xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
}
return ring;
}
static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
{
USBHostIsoRing *ring;
QTAILQ_FOREACH(ring, &s->isorings, next) {
if (ring->ep == ep) {
return ring;
}
}
return NULL;
}
static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
{
libusb_set_iso_packet_lengths(xfer->xfer,
xfer->ring->ep->max_packet_size);
xfer->packet = 0;
xfer->copy_complete = false;
}
static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
{
if (inflight) {
xfer->xfer->user_data = NULL;
} else {
g_free(xfer->xfer->buffer);
libusb_free_transfer(xfer->xfer);
}
g_free(xfer);
}
static void usb_host_iso_free(USBHostIsoRing *ring)
{
USBHostIsoXfer *xfer;
while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
QTAILQ_REMOVE(&ring->inflight, xfer, next);
usb_host_iso_free_xfer(xfer, true);
}
while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
QTAILQ_REMOVE(&ring->unused, xfer, next);
usb_host_iso_free_xfer(xfer, false);
}
while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
QTAILQ_REMOVE(&ring->copy, xfer, next);
usb_host_iso_free_xfer(xfer, false);
}
QTAILQ_REMOVE(&ring->host->isorings, ring, next);
g_free(ring);
}
static void usb_host_iso_free_all(USBHostDevice *s)
{
USBHostIsoRing *ring;
while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
usb_host_iso_free(ring);
}
}
static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
{
unsigned int psize;
unsigned char *buf;
buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
if (p->pid == USB_TOKEN_OUT) {
psize = p->iov.size;
if (psize > xfer->ring->ep->max_packet_size) {
/* should not happen (guest bug) */
psize = xfer->ring->ep->max_packet_size;
}
xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
} else {
psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
if (psize > p->iov.size) {
/* should not happen (guest bug) */
psize = p->iov.size;
}
}
usb_packet_copy(p, buf, psize);
xfer->packet++;
xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
return xfer->copy_complete;
}
static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
{
USBHostIsoRing *ring;
USBHostIsoXfer *xfer;
bool disconnect = false;
int rc;
ring = usb_host_iso_find(s, p->ep);
if (ring == NULL) {
ring = usb_host_iso_alloc(s, p->ep);
}
/* copy data to guest */
xfer = QTAILQ_FIRST(&ring->copy);
if (xfer != NULL) {
if (usb_host_iso_data_copy(xfer, p)) {
QTAILQ_REMOVE(&ring->copy, xfer, next);
QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
}
}
/* submit empty bufs to host */
while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
QTAILQ_REMOVE(&ring->unused, xfer, next);
usb_host_iso_reset_xfer(xfer);
rc = libusb_submit_transfer(xfer->xfer);
if (rc != 0) {
usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
if (rc == LIBUSB_ERROR_NO_DEVICE) {
disconnect = true;
}
break;
}
if (QTAILQ_EMPTY(&ring->inflight)) {
trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
}
QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
}
if (disconnect) {
usb_host_nodev(s);
}
}
static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
{
USBHostIsoRing *ring;
USBHostIsoXfer *xfer;
bool disconnect = false;
int rc, filled = 0;
ring = usb_host_iso_find(s, p->ep);
if (ring == NULL) {
ring = usb_host_iso_alloc(s, p->ep);
}
/* copy data from guest */
xfer = QTAILQ_FIRST(&ring->copy);
while (xfer != NULL && xfer->copy_complete) {
filled++;
xfer = QTAILQ_NEXT(xfer, next);
}
if (xfer == NULL) {
xfer = QTAILQ_FIRST(&ring->unused);
if (xfer == NULL) {
trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
return;
}
QTAILQ_REMOVE(&ring->unused, xfer, next);
usb_host_iso_reset_xfer(xfer);
QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
}
usb_host_iso_data_copy(xfer, p);
if (QTAILQ_EMPTY(&ring->inflight)) {
/* wait until half of our buffers are filled
before kicking the iso out stream */
if (filled*2 < s->iso_urb_count) {
return;
}
}
/* submit filled bufs to host */
while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
xfer->copy_complete) {
QTAILQ_REMOVE(&ring->copy, xfer, next);
rc = libusb_submit_transfer(xfer->xfer);
if (rc != 0) {
usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
if (rc == LIBUSB_ERROR_NO_DEVICE) {
disconnect = true;
}
break;
}
if (QTAILQ_EMPTY(&ring->inflight)) {
trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
}
QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
}
if (disconnect) {
usb_host_nodev(s);
}
}
/* ------------------------------------------------------------------------ */
static void usb_host_speed_compat(USBHostDevice *s)
{
USBDevice *udev = USB_DEVICE(s);
struct libusb_config_descriptor *conf;
const struct libusb_interface_descriptor *intf;
const struct libusb_endpoint_descriptor *endp;
#ifdef HAVE_STREAMS
struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
#endif
bool compat_high = true;
bool compat_full = true;
uint8_t type;
int rc, c, i, a, e;
for (c = 0;; c++) {
rc = libusb_get_config_descriptor(s->dev, c, &conf);
if (rc != 0) {
break;
}
for (i = 0; i < conf->bNumInterfaces; i++) {
for (a = 0; a < conf->interface[i].num_altsetting; a++) {
intf = &conf->interface[i].altsetting[a];
if (intf->bInterfaceClass == LIBUSB_CLASS_MASS_STORAGE &&
intf->bInterfaceSubClass == 6) { /* SCSI */
udev->flags |= (1 << USB_DEV_FLAG_IS_SCSI_STORAGE);
break;
}
for (e = 0; e < intf->bNumEndpoints; e++) {
endp = &intf->endpoint[e];
type = endp->bmAttributes & 0x3;
switch (type) {
case 0x01: /* ISO */
compat_full = false;
compat_high = false;
break;
case 0x02: /* BULK */
#ifdef HAVE_STREAMS
rc = libusb_get_ss_endpoint_companion_descriptor
(ctx, endp, &endp_ss_comp);
if (rc == LIBUSB_SUCCESS) {
int streams = endp_ss_comp->bmAttributes & 0x1f;
if (streams) {
compat_full = false;
compat_high = false;
}
libusb_free_ss_endpoint_companion_descriptor
(endp_ss_comp);
}
#endif
break;
case 0x03: /* INTERRUPT */
if (endp->wMaxPacketSize > 64) {
compat_full = false;
}
if (endp->wMaxPacketSize > 1024) {
compat_high = false;
}
break;
}
}
}
}
libusb_free_config_descriptor(conf);
}
udev->speedmask = (1 << udev->speed);
if (udev->speed == USB_SPEED_SUPER && compat_high) {
udev->speedmask |= USB_SPEED_MASK_HIGH;
}
if (udev->speed == USB_SPEED_SUPER && compat_full) {
udev->speedmask |= USB_SPEED_MASK_FULL;
}
if (udev->speed == USB_SPEED_HIGH && compat_full) {
udev->speedmask |= USB_SPEED_MASK_FULL;
}
}
static void usb_host_ep_update(USBHostDevice *s)
{
static const char *tname[] = {
[USB_ENDPOINT_XFER_CONTROL] = "control",
[USB_ENDPOINT_XFER_ISOC] = "isoc",
[USB_ENDPOINT_XFER_BULK] = "bulk",
[USB_ENDPOINT_XFER_INT] = "int",
};
USBDevice *udev = USB_DEVICE(s);
struct libusb_config_descriptor *conf;
const struct libusb_interface_descriptor *intf;
const struct libusb_endpoint_descriptor *endp;
#ifdef HAVE_STREAMS
struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
#endif
uint8_t devep, type;
int pid, ep, alt;
int rc, i, e;
usb_ep_reset(udev);
rc = libusb_get_active_config_descriptor(s->dev, &conf);
if (rc != 0) {
return;
}
trace_usb_host_parse_config(s->bus_num, s->addr,
conf->bConfigurationValue, true);
for (i = 0; i < conf->bNumInterfaces; i++) {
/*
* The udev->altsetting array indexes alternate settings
* by the interface number. Get the 0th alternate setting
* first so that we can grab the interface number, and
* then correct the alternate setting value if necessary.
*/
intf = &conf->interface[i].altsetting[0];
alt = udev->altsetting[intf->bInterfaceNumber];
if (alt != 0) {
assert(alt < conf->interface[i].num_altsetting);
intf = &conf->interface[i].altsetting[alt];
}
trace_usb_host_parse_interface(s->bus_num, s->addr,
intf->bInterfaceNumber,
intf->bAlternateSetting, true);
for (e = 0; e < intf->bNumEndpoints; e++) {
endp = &intf->endpoint[e];
devep = endp->bEndpointAddress;
pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
ep = devep & 0xf;
type = endp->bmAttributes & 0x3;
if (ep == 0) {
trace_usb_host_parse_error(s->bus_num, s->addr,
"invalid endpoint address");
return;
}
if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
trace_usb_host_parse_error(s->bus_num, s->addr,
"duplicate endpoint address");
return;
}
trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
(devep & USB_DIR_IN) ? "in" : "out",
tname[type], true);
usb_ep_set_max_packet_size(udev, pid, ep,
endp->wMaxPacketSize);
usb_ep_set_type(udev, pid, ep, type);
usb_ep_set_ifnum(udev, pid, ep, i);
usb_ep_set_halted(udev, pid, ep, 0);
#ifdef HAVE_STREAMS
if (type == LIBUSB_TRANSFER_TYPE_BULK &&
libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
&endp_ss_comp) == LIBUSB_SUCCESS) {
usb_ep_set_max_streams(udev, pid, ep,
endp_ss_comp->bmAttributes);
libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
}
#endif
}
}
libusb_free_config_descriptor(conf);
}
static int usb_host_open(USBHostDevice *s, libusb_device *dev, int hostfd)
{
USBDevice *udev = USB_DEVICE(s);
int libusb_speed;
int bus_num = 0;
int addr = 0;
int rc;
Error *local_err = NULL;
if (s->bh_postld_pending) {
return -1;
}
if (s->dh != NULL) {
goto fail;
}
if (dev) {
bus_num = libusb_get_bus_number(dev);
addr = libusb_get_device_address(dev);
trace_usb_host_open_started(bus_num, addr);
rc = libusb_open(dev, &s->dh);
if (rc != 0) {
goto fail;
}
} else {
#if LIBUSB_API_VERSION >= 0x01000107 && !defined(CONFIG_WIN32)
trace_usb_host_open_hostfd(hostfd);
rc = libusb_wrap_sys_device(ctx, hostfd, &s->dh);
if (rc != 0) {
goto fail;
}
s->hostfd = hostfd;
dev = libusb_get_device(s->dh);
bus_num = libusb_get_bus_number(dev);
addr = libusb_get_device_address(dev);
#else
g_assert_not_reached();
#endif
}
s->dev = dev;
s->bus_num = bus_num;
s->addr = addr;
usb_host_detach_kernel(s);
libusb_get_device_descriptor(dev, &s->ddesc);
usb_host_get_port(s->dev, s->port, sizeof(s->port));
usb_ep_init(udev);
usb_host_ep_update(s);
libusb_speed = libusb_get_device_speed(dev);
#if LIBUSB_API_VERSION >= 0x01000107 && defined(CONFIG_LINUX) && \
defined(USBDEVFS_GET_SPEED)
if (hostfd && libusb_speed == 0) {
/*
* Workaround libusb bug: libusb_get_device_speed() does not
* work for libusb_wrap_sys_device() devices in v1.0.23.
*
* Speeds are defined in linux/usb/ch9.h, file not included
* due to name conflicts.
*/
int rc = ioctl(hostfd, USBDEVFS_GET_SPEED, NULL);
switch (rc) {
case 1: /* low */
libusb_speed = LIBUSB_SPEED_LOW;
break;
case 2: /* full */
libusb_speed = LIBUSB_SPEED_FULL;
break;
case 3: /* high */
case 4: /* wireless */
libusb_speed = LIBUSB_SPEED_HIGH;
break;
case 5: /* super */
libusb_speed = LIBUSB_SPEED_SUPER;
break;
case 6: /* super plus */
#ifdef HAVE_SUPER_PLUS
libusb_speed = LIBUSB_SPEED_SUPER_PLUS;
#else