--- /dev/null
+/*
+ * 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 <poll.h>
+#include <libusb.h>
+
+#include "qemu-common.h"
+#include "monitor/monitor.h"
+#include "qemu/error-report.h"
+#include "sysemu/sysemu.h"
+#include "trace.h"
+
+#include "hw/usb.h"
+
+/* ------------------------------------------------------------------------ */
+
+#define TYPE_USB_HOST_DEVICE "usb-host"
+#define USB_HOST_DEVICE(obj) \
+ OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
+
+typedef struct USBHostDevice USBHostDevice;
+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;
+ int32_t bootindex;
+ uint32_t iso_urb_count;
+ uint32_t iso_urb_frames;
+ uint32_t options;
+ uint32_t loglevel;
+
+ /* state */
+ QTAILQ_ENTRY(USBHostDevice) next;
+ int seen, errcount;
+ int bus_num;
+ int addr;
+ char port[16];
+
+ 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;
+ 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 */
+
+#if LIBUSBX_API_VERSION >= 0x01000103
+# define HAVE_STREAMS 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",
+};
+
+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,
+};
+
+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;
+
+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);
+}
+
+static int usb_host_init(void)
+{
+ const struct libusb_pollfd **poll;
+ int i, rc;
+
+ if (ctx) {
+ return 0;
+ }
+ rc = libusb_init(&ctx);
+ if (rc != 0) {
+ return -1;
+ }
+ libusb_set_debug(ctx, loglevel);
+
+ libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
+ usb_host_del_fd,
+ ctx);
+ poll = libusb_get_pollfds(ctx);
+ if (poll) {
+ for (i = 0; poll[i] != NULL; i++) {
+ usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
+ }
+ }
+ free(poll);
+ 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 LIBUSBX_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)
+{
+ if (r->host) {
+ 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 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) {
+ 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;
+ }
+ }
+ 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 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;
+ }
+
+ QTAILQ_REMOVE(&r->host->requests, r, next);
+ r->host = NULL;
+
+ if (inflight) {
+ libusb_cancel_transfer(r->xfer);
+ }
+}
+
+/* ------------------------------------------------------------------------ */
+
+static void 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);
+ } 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];
+ 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) {
+ libusb_free_ss_endpoint_companion_descriptor
+ (endp_ss_comp);
+ compat_full = false;
+ compat_high = false;
+ }
+#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;
+ 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++) {
+ assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
+ intf = &conf->interface[i].altsetting[udev->altsetting[i]];
+ 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)
+{
+ USBDevice *udev = USB_DEVICE(s);
+ int bus_num = libusb_get_bus_number(dev);
+ int addr = libusb_get_device_address(dev);
+ int rc;
+ Error *local_err = NULL;
+
+ trace_usb_host_open_started(bus_num, addr);
+
+ if (s->dh != NULL) {
+ goto fail;
+ }
+ rc = libusb_open(dev, &s->dh);
+ if (rc != 0) {
+ goto fail;
+ }
+
+ 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);
+
+ udev->speed = speed_map[libusb_get_device_speed(dev)];
+ usb_host_speed_compat(s);
+
+ if (s->ddesc.iProduct) {
+ libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
+ (unsigned char *)udev->product_desc,
+ sizeof(udev->product_desc));
+ } else {
+ snprintf(udev->product_desc, sizeof(udev->product_desc),
+ "host:%d.%d", bus_num, addr);
+ }
+
+ usb_device_attach(udev, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ goto fail;
+ }
+
+ trace_usb_host_open_success(bus_num, addr);
+ return 0;
+
+fail:
+ trace_usb_host_open_failure(bus_num, addr);
+ if (s->dh != NULL) {
+ usb_host_release_interfaces(s);
+ libusb_reset_device(s->dh);
+ usb_host_attach_kernel(s);
+ libusb_close(s->dh);
+ s->dh = NULL;
+ s->dev = NULL;
+ }
+ return -1;
+}
+
+static void usb_host_abort_xfers(USBHostDevice *s)
+{
+ USBHostRequest *r, *rtmp;
+
+ QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
+ usb_host_req_abort(r);
+ }
+}
+
+static int usb_host_close(USBHostDevice *s)
+{
+ USBDevice *udev = USB_DEVICE(s);
+
+ if (s->dh == NULL) {
+ return -1;
+ }
+
+ trace_usb_host_close(s->bus_num, s->addr);
+
+ usb_host_abort_xfers(s);
+ usb_host_iso_free_all(s);
+
+ if (udev->attached) {
+ usb_device_detach(udev);
+ }
+
+ usb_host_release_interfaces(s);
+ libusb_reset_device(s->dh);
+ usb_host_attach_kernel(s);
+ libusb_close(s->dh);
+ s->dh = NULL;
+ s->dev = NULL;
+
+ usb_host_auto_check(NULL);
+ return 0;
+}
+
+static void usb_host_nodev_bh(void *opaque)
+{
+ USBHostDevice *s = opaque;
+ usb_host_close(s);
+}
+
+static void usb_host_nodev(USBHostDevice *s)
+{
+ if (!s->bh_nodev) {
+ s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
+ }
+ qemu_bh_schedule(s->bh_nodev);
+}
+
+static void usb_host_exit_notifier(struct Notifier *n, void *data)
+{
+ USBHostDevice *s = container_of(n, USBHostDevice, exit);
+
+ if (s->dh) {
+ usb_host_release_interfaces(s);
+ usb_host_attach_kernel(s);
+ }
+}
+
+static void usb_host_realize(USBDevice *udev, Error **errp)
+{
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+
+ if (s->match.vendor_id > 0xffff) {
+ error_setg(errp, "vendorid out of range");
+ return;
+ }
+ if (s->match.product_id > 0xffff) {
+ error_setg(errp, "productid out of range");
+ return;
+ }
+ if (s->match.addr > 127) {
+ error_setg(errp, "hostaddr out of range");
+ return;
+ }
+
+ loglevel = s->loglevel;
+ udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
+ udev->auto_attach = 0;
+ QTAILQ_INIT(&s->requests);
+ QTAILQ_INIT(&s->isorings);
+
+ s->exit.notify = usb_host_exit_notifier;
+ qemu_add_exit_notifier(&s->exit);
+
+ QTAILQ_INSERT_TAIL(&hostdevs, s, next);
+ usb_host_auto_check(NULL);
+}
+
+static void usb_host_instance_init(Object *obj)
+{
+ USBDevice *udev = USB_DEVICE(obj);
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+
+ device_add_bootindex_property(obj, &s->bootindex,
+ "bootindex", NULL,
+ &udev->qdev, NULL);
+}
+
+static void usb_host_handle_destroy(USBDevice *udev)
+{
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+
+ qemu_remove_exit_notifier(&s->exit);
+ QTAILQ_REMOVE(&hostdevs, s, next);
+ usb_host_close(s);
+}
+
+static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
+{
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+ USBHostRequest *r;
+
+ if (p->combined) {
+ usb_combined_packet_cancel(udev, p);
+ return;
+ }
+
+ trace_usb_host_req_canceled(s->bus_num, s->addr, p);
+
+ r = usb_host_req_find(s, p);
+ if (r && r->p) {
+ r->p = NULL; /* mark as dead */
+ libusb_cancel_transfer(r->xfer);
+ }
+}
+
+static void usb_host_detach_kernel(USBHostDevice *s)
+{
+ struct libusb_config_descriptor *conf;
+ int rc, i;
+
+ rc = libusb_get_active_config_descriptor(s->dev, &conf);
+ if (rc != 0) {
+ return;
+ }
+ for (i = 0; i < conf->bNumInterfaces; i++) {
+ rc = libusb_kernel_driver_active(s->dh, i);
+ usb_host_libusb_error("libusb_kernel_driver_active", rc);
+ if (rc != 1) {
+ continue;
+ }
+ trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
+ rc = libusb_detach_kernel_driver(s->dh, i);
+ usb_host_libusb_error("libusb_detach_kernel_driver", rc);
+ s->ifs[i].detached = true;
+ }
+ libusb_free_config_descriptor(conf);
+}
+
+static void usb_host_attach_kernel(USBHostDevice *s)
+{
+ struct libusb_config_descriptor *conf;
+ int rc, i;
+
+ rc = libusb_get_active_config_descriptor(s->dev, &conf);
+ if (rc != 0) {
+ return;
+ }
+ for (i = 0; i < conf->bNumInterfaces; i++) {
+ if (!s->ifs[i].detached) {
+ continue;
+ }
+ trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
+ libusb_attach_kernel_driver(s->dh, i);
+ s->ifs[i].detached = false;
+ }
+ libusb_free_config_descriptor(conf);
+}
+
+static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
+{
+ USBDevice *udev = USB_DEVICE(s);
+ struct libusb_config_descriptor *conf;
+ int rc, i;
+
+ for (i = 0; i < USB_MAX_INTERFACES; i++) {
+ udev->altsetting[i] = 0;
+ }
+ udev->ninterfaces = 0;
+ udev->configuration = 0;
+
+ usb_host_detach_kernel(s);
+
+ rc = libusb_get_active_config_descriptor(s->dev, &conf);
+ if (rc != 0) {
+ if (rc == LIBUSB_ERROR_NOT_FOUND) {
+ /* address state - ignore */
+ return USB_RET_SUCCESS;
+ }
+ return USB_RET_STALL;
+ }
+
+ for (i = 0; i < conf->bNumInterfaces; i++) {
+ trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
+ rc = libusb_claim_interface(s->dh, i);
+ usb_host_libusb_error("libusb_claim_interface", rc);
+ if (rc != 0) {
+ return USB_RET_STALL;
+ }
+ s->ifs[i].claimed = true;
+ }
+
+ udev->ninterfaces = conf->bNumInterfaces;
+ udev->configuration = configuration;
+
+ libusb_free_config_descriptor(conf);
+ return USB_RET_SUCCESS;
+}
+
+static void usb_host_release_interfaces(USBHostDevice *s)
+{
+ USBDevice *udev = USB_DEVICE(s);
+ int i, rc;
+
+ for (i = 0; i < udev->ninterfaces; i++) {
+ if (!s->ifs[i].claimed) {
+ continue;
+ }
+ trace_usb_host_release_interface(s->bus_num, s->addr, i);
+ rc = libusb_release_interface(s->dh, i);
+ usb_host_libusb_error("libusb_release_interface", rc);
+ s->ifs[i].claimed = false;
+ }
+}
+
+static void usb_host_set_address(USBHostDevice *s, int addr)
+{
+ USBDevice *udev = USB_DEVICE(s);
+
+ trace_usb_host_set_address(s->bus_num, s->addr, addr);
+ udev->addr = addr;
+}
+
+static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
+{
+ int rc;
+
+ trace_usb_host_set_config(s->bus_num, s->addr, config);
+
+ usb_host_release_interfaces(s);
+ rc = libusb_set_configuration(s->dh, config);
+ if (rc != 0) {
+ usb_host_libusb_error("libusb_set_configuration", rc);
+ p->status = USB_RET_STALL;
+ if (rc == LIBUSB_ERROR_NO_DEVICE) {
+ usb_host_nodev(s);
+ }
+ return;
+ }
+ p->status = usb_host_claim_interfaces(s, config);
+ if (p->status != USB_RET_SUCCESS) {
+ return;
+ }
+ usb_host_ep_update(s);
+}
+
+static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
+ USBPacket *p)
+{
+ USBDevice *udev = USB_DEVICE(s);
+ int rc;
+
+ trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
+
+ usb_host_iso_free_all(s);
+
+ if (iface >= USB_MAX_INTERFACES) {
+ p->status = USB_RET_STALL;
+ return;
+ }
+
+ rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
+ if (rc != 0) {
+ usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
+ p->status = USB_RET_STALL;
+ if (rc == LIBUSB_ERROR_NO_DEVICE) {
+ usb_host_nodev(s);
+ }
+ return;
+ }
+
+ udev->altsetting[iface] = alt;
+ usb_host_ep_update(s);
+}
+
+static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
+ int request, int value, int index,
+ int length, uint8_t *data)
+{
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+ USBHostRequest *r;
+ int rc;
+
+ trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
+
+ if (s->dh == NULL) {
+ p->status = USB_RET_NODEV;
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+ }
+
+ switch (request) {
+ case DeviceOutRequest | USB_REQ_SET_ADDRESS:
+ usb_host_set_address(s, value);
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+
+ case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
+ usb_host_set_config(s, value & 0xff, p);
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+
+ case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
+ usb_host_set_interface(s, index, value, p);
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+
+ case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
+ if (value == 0) { /* clear halt */
+ int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
+ libusb_clear_halt(s->dh, index);
+ usb_ep_set_halted(udev, pid, index & 0x0f, 0);
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+ }
+ }
+
+ r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
+ r->cbuf = data;
+ r->clen = length;
+ memcpy(r->buffer, udev->setup_buf, 8);
+ if (!r->in) {
+ memcpy(r->buffer + 8, r->cbuf, r->clen);
+ }
+
+ /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
+ * to work redirected to a not superspeed capable hcd */
+ if (udev->speed == USB_SPEED_SUPER &&
+ !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
+ request == 0x8006 && value == 0x100 && index == 0) {
+ r->usb3ep0quirk = true;
+ }
+
+ libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
+ usb_host_req_complete_ctrl, r,
+ CONTROL_TIMEOUT);
+ rc = libusb_submit_transfer(r->xfer);
+ if (rc != 0) {
+ p->status = USB_RET_NODEV;
+ trace_usb_host_req_complete(s->bus_num, s->addr, p,
+ p->status, p->actual_length);
+ if (rc == LIBUSB_ERROR_NO_DEVICE) {
+ usb_host_nodev(s);
+ }
+ return;
+ }
+
+ p->status = USB_RET_ASYNC;
+}
+
+static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
+{
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+ USBHostRequest *r;
+ size_t size;
+ int ep, rc;
+
+ if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
+ p->status = USB_RET_ADD_TO_QUEUE;
+ return;
+ }
+
+ trace_usb_host_req_data(s->bus_num, s->addr, p,
+ p->pid == USB_TOKEN_IN,
+ p->ep->nr, p->iov.size);
+
+ if (s->dh == NULL) {
+ p->status = USB_RET_NODEV;
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+ }
+ if (p->ep->halted) {
+ p->status = USB_RET_STALL;
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
+ return;
+ }
+
+ switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
+ case USB_ENDPOINT_XFER_BULK:
+ size = usb_packet_size(p);
+ r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
+ if (!r->in) {
+ usb_packet_copy(p, r->buffer, size);
+ }
+ ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
+ if (p->stream) {
+#ifdef HAVE_STREAMS
+ libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
+ r->buffer, size,
+ usb_host_req_complete_data, r,
+ BULK_TIMEOUT);
+#else
+ usb_host_req_free(r);
+ p->status = USB_RET_STALL;
+ return;
+#endif
+ } else {
+ libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
+ r->buffer, size,
+ usb_host_req_complete_data, r,
+ BULK_TIMEOUT);
+ }
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
+ if (!r->in) {
+ usb_packet_copy(p, r->buffer, p->iov.size);
+ }
+ ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
+ libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
+ r->buffer, p->iov.size,
+ usb_host_req_complete_data, r,
+ INTR_TIMEOUT);
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (p->pid == USB_TOKEN_IN) {
+ usb_host_iso_data_in(s, p);
+ } else {
+ usb_host_iso_data_out(s, p);
+ }
+ trace_usb_host_req_complete(s->bus_num, s->addr, p,
+ p->status, p->actual_length);
+ return;
+ default:
+ p->status = USB_RET_STALL;
+ trace_usb_host_req_complete(s->bus_num, s->addr, p,
+ p->status, p->actual_length);
+ return;
+ }
+
+ rc = libusb_submit_transfer(r->xfer);
+ if (rc != 0) {
+ p->status = USB_RET_NODEV;
+ trace_usb_host_req_complete(s->bus_num, s->addr, p,
+ p->status, p->actual_length);
+ if (rc == LIBUSB_ERROR_NO_DEVICE) {
+ usb_host_nodev(s);
+ }
+ return;
+ }
+
+ p->status = USB_RET_ASYNC;
+}
+
+static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
+{
+ if (usb_host_use_combining(ep)) {
+ usb_ep_combine_input_packets(ep);
+ }
+}
+
+static void usb_host_handle_reset(USBDevice *udev)
+{
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+ int rc;
+
+ trace_usb_host_reset(s->bus_num, s->addr);
+
+ rc = libusb_reset_device(s->dh);
+ if (rc != 0) {
+ usb_host_nodev(s);
+ }
+}
+
+static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
+ int nr_eps, int streams)
+{
+#ifdef HAVE_STREAMS
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+ unsigned char endpoints[30];
+ int i, rc;
+
+ for (i = 0; i < nr_eps; i++) {
+ endpoints[i] = eps[i]->nr;
+ if (eps[i]->pid == USB_TOKEN_IN) {
+ endpoints[i] |= 0x80;
+ }
+ }
+ rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
+ if (rc < 0) {
+ usb_host_libusb_error("libusb_alloc_streams", rc);
+ } else if (rc != streams) {
+ error_report("libusb_alloc_streams: got less streams "
+ "then requested %d < %d", rc, streams);
+ }
+
+ return (rc == streams) ? 0 : -1;
+#else
+ error_report("libusb_alloc_streams: error not implemented");
+ return -1;
+#endif
+}
+
+static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
+ int nr_eps)
+{
+#ifdef HAVE_STREAMS
+ USBHostDevice *s = USB_HOST_DEVICE(udev);
+ unsigned char endpoints[30];
+ int i;
+
+ for (i = 0; i < nr_eps; i++) {
+ endpoints[i] = eps[i]->nr;
+ if (eps[i]->pid == USB_TOKEN_IN) {
+ endpoints[i] |= 0x80;
+ }
+ }
+ libusb_free_streams(s->dh, endpoints, nr_eps);
+#endif
+}
+
+/*
+ * This is *NOT* about restoring state. We have absolutely no idea
+ * what state the host device is in at the moment and whenever it is
+ * still present in the first place. Attemping to contine where we
+ * left off is impossible.
+ *
+ * What we are going to to to here is emulate a surprise removal of
+ * the usb device passed through, then kick host scan so the device
+ * will get re-attached (and re-initialized by the guest) in case it
+ * is still present.
+ *
+ * As the device removal will change the state of other devices (usb
+ * host controller, most likely interrupt controller too) we have to
+ * wait with it until *all* vmstate is loaded. Thus post_load just
+ * kicks a bottom half which then does the actual work.
+ */
+static void usb_host_post_load_bh(void *opaque)
+{
+ USBHostDevice *dev = opaque;
+ USBDevice *udev = USB_DEVICE(dev);
+
+ if (dev->dh != NULL) {
+ usb_host_close(dev);
+ }
+ if (udev->attached) {
+ usb_device_detach(udev);
+ }
+ usb_host_auto_check(NULL);
+}
+
+static int usb_host_post_load(void *opaque, int version_id)
+{
+ USBHostDevice *dev = opaque;
+
+ if (!dev->bh_postld) {
+ dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
+ }
+ qemu_bh_schedule(dev->bh_postld);
+ return 0;
+}
+
+static const VMStateDescription vmstate_usb_host = {
+ .name = "usb-host",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .post_load = usb_host_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static Property usb_host_dev_properties[] = {
+ DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
+ DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
+ DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
+ DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
+ DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
+ DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
+ DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
+ DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
+ LIBUSB_LOG_LEVEL_WARNING),
+ DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
+ USB_HOST_OPT_PIPELINE, true),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void usb_host_class_initfn(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+ uc->realize = usb_host_realize;
+ uc->product_desc = "USB Host Device";
+ uc->cancel_packet = usb_host_cancel_packet;
+ uc->handle_data = usb_host_handle_data;
+ uc->handle_control = usb_host_handle_control;
+ uc->handle_reset = usb_host_handle_reset;
+ uc->handle_destroy = usb_host_handle_destroy;
+ uc->flush_ep_queue = usb_host_flush_ep_queue;
+ uc->alloc_streams = usb_host_alloc_streams;
+ uc->free_streams = usb_host_free_streams;
+ dc->vmsd = &vmstate_usb_host;
+ dc->props = usb_host_dev_properties;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+}
+
+static TypeInfo usb_host_dev_info = {
+ .name = TYPE_USB_HOST_DEVICE,
+ .parent = TYPE_USB_DEVICE,
+ .instance_size = sizeof(USBHostDevice),
+ .class_init = usb_host_class_initfn,
+ .instance_init = usb_host_instance_init,
+};
+
+static void usb_host_register_types(void)
+{
+ type_register_static(&usb_host_dev_info);
+}
+
+type_init(usb_host_register_types)
+
+/* ------------------------------------------------------------------------ */
+
+static QEMUTimer *usb_auto_timer;
+static VMChangeStateEntry *usb_vmstate;
+
+static void usb_host_vm_state(void *unused, int running, RunState state)
+{
+ if (running) {
+ usb_host_auto_check(unused);
+ }
+}
+
+static void usb_host_auto_check(void *unused)
+{
+ struct USBHostDevice *s;
+ struct USBAutoFilter *f;
+ libusb_device **devs = NULL;
+ struct libusb_device_descriptor ddesc;
+ int unconnected = 0;
+ int i, n;
+
+ if (usb_host_init() != 0) {
+ return;
+ }
+
+ if (runstate_is_running()) {
+ n = libusb_get_device_list(ctx, &devs);
+ for (i = 0; i < n; i++) {
+ if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
+ continue;
+ }
+ if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
+ continue;
+ }
+ QTAILQ_FOREACH(s, &hostdevs, next) {
+ f = &s->match;
+ if (f->bus_num > 0 &&
+ f->bus_num != libusb_get_bus_number(devs[i])) {
+ continue;
+ }
+ if (f->addr > 0 &&
+ f->addr != libusb_get_device_address(devs[i])) {
+ continue;
+ }
+ if (f->port != NULL) {
+ char port[16] = "-";
+ usb_host_get_port(devs[i], port, sizeof(port));
+ if (strcmp(f->port, port) != 0) {
+ continue;
+ }
+ }
+ if (f->vendor_id > 0 &&
+ f->vendor_id != ddesc.idVendor) {
+ continue;
+ }
+ if (f->product_id > 0 &&
+ f->product_id != ddesc.idProduct) {
+ continue;
+ }
+
+ /* We got a match */
+ s->seen++;
+ if (s->errcount >= 3) {
+ continue;
+ }
+ if (s->dh != NULL) {
+ continue;
+ }
+ if (usb_host_open(s, devs[i]) < 0) {
+ s->errcount++;
+ continue;
+ }
+ break;
+ }
+ }
+ libusb_free_device_list(devs, 1);
+
+ QTAILQ_FOREACH(s, &hostdevs, next) {
+ if (s->dh == NULL) {
+ unconnected++;
+ }
+ if (s->seen == 0) {
+ if (s->dh) {
+ usb_host_close(s);
+ }
+ s->errcount = 0;
+ }
+ s->seen = 0;
+ }
+
+#if 0
+ if (unconnected == 0) {
+ /* nothing to watch */
+ if (usb_auto_timer) {
+ timer_del(usb_auto_timer);
+ trace_usb_host_auto_scan_disabled();
+ }
+ return;
+ }
+#endif
+ }
+
+ if (!usb_vmstate) {
+ usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
+ }
+ if (!usb_auto_timer) {
+ usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
+ if (!usb_auto_timer) {
+ return;
+ }
+ trace_usb_host_auto_scan_enabled();
+ }
+ timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
+}
+
+void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
+{
+ libusb_device **devs = NULL;
+ struct libusb_device_descriptor ddesc;
+ char port[16];
+ int i, n;
+
+ if (usb_host_init() != 0) {
+ return;
+ }
+
+ n = libusb_get_device_list(ctx, &devs);
+ for (i = 0; i < n; i++) {
+ if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
+ continue;
+ }
+ if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
+ continue;
+ }
+ usb_host_get_port(devs[i], port, sizeof(port));
+ monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
+ libusb_get_bus_number(devs[i]),
+ libusb_get_device_address(devs[i]),
+ port,
+ speed_name[libusb_get_device_speed(devs[i])]);
+ monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
+ monitor_printf(mon, " USB device %04x:%04x",
+ ddesc.idVendor, ddesc.idProduct);
+ if (ddesc.iProduct) {
+ libusb_device_handle *handle;
+ if (libusb_open(devs[i], &handle) == 0) {
+ unsigned char name[64] = "";
+ libusb_get_string_descriptor_ascii(handle,
+ ddesc.iProduct,
+ name, sizeof(name));
+ libusb_close(handle);
+ monitor_printf(mon, ", %s", name);
+ }
+ }
+ monitor_printf(mon, "\n");
+ }
+ libusb_free_device_list(devs, 1);
+}
Code Review / kvmfornfv.git / blobdiff