| /* |
| * 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" |
| #ifndef CONFIG_WIN32 |
| #include <poll.h> |
| #endif |
| #include <libusb.h> |
| |
| #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" |
| #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; |
| 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 |
| |
| 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; |
| |
| #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]; |
| 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; |
| 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, int hostfd) |
| { |
| USBDevice *udev = USB_DEVICE(s); |
| 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); |
| |
| 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; |
| int limit = 100; |
| |
| QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { |
| usb_host_req_abort(r); |
| } |
| |
| while (QTAILQ_FIRST(&s->requests) != NULL) { |
| struct timeval tv; |
| memset(&tv, 0, sizeof(tv)); |
| tv.tv_usec = 2500; |
| libusb_handle_events_timeout(ctx, &tv); |
| if (--limit == 0) { |
| /* |
| * Don't wait forever for libusb calling the complete |
| * callback (which will unlink and free the request). |
| * |
| * Leaking memory here, to make sure libusb will not |
| * access memory which we have released already. |
| */ |
| QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { |
| QTAILQ_REMOVE(&s->requests, r, next); |
| } |
| return; |
| } |
| } |
| } |
| |
| 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; |
| |
| if (s->hostfd != -1) { |
| close(s->hostfd); |
| s->hostfd = -1; |
| } |
| |
| 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_abort_xfers(s); |
| usb_host_release_interfaces(s); |
| libusb_reset_device(s->dh); |
| usb_host_attach_kernel(s); |
| libusb_close(s->dh); |
| } |
| } |
| |
| static libusb_device *usb_host_find_ref(int bus, int addr) |
| { |
| libusb_device **devs = NULL; |
| libusb_device *ret = NULL; |
| int i, n; |
| |
| n = libusb_get_device_list(ctx, &devs); |
| for (i = 0; i < n; i++) { |
| if (libusb_get_bus_number(devs[i]) == bus && |
| libusb_get_device_address(devs[i]) == addr) { |
| ret = libusb_ref_device(devs[i]); |
| break; |
| } |
| } |
| libusb_free_device_list(devs, 1); |
| return ret; |
| } |
| |
| static void usb_host_realize(USBDevice *udev, Error **errp) |
| { |
| USBHostDevice *s = USB_HOST_DEVICE(udev); |
| libusb_device *ldev; |
| int rc; |
| |
| if (usb_host_init() != 0) { |
| error_setg(errp, "failed to init libusb"); |
| return; |
| } |
| 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->hostfd = -1; |
| |
| #if LIBUSB_API_VERSION >= 0x01000107 && !defined(CONFIG_WIN32) |
| if (s->hostdevice) { |
| int fd; |
| s->needs_autoscan = false; |
| fd = qemu_open(s->hostdevice, O_RDWR); |
| if (fd < 0) { |
| error_setg_errno(errp, errno, "failed to open %s", s->hostdevice); |
| return; |
| } |
| rc = usb_host_open(s, NULL, fd); |
| if (rc < 0) { |
| error_setg(errp, "failed to open host usb device %s", s->hostdevice); |
| return; |
| } |
| } else |
| #endif |
| if (s->match.addr && s->match.bus_num && |
| !s->match.vendor_id && |
| !s->match.product_id && |
| !s->match.port) { |
| s->needs_autoscan = false; |
| ldev = usb_host_find_ref(s->match.bus_num, |
| s->match.addr); |
| if (!ldev) { |
| error_setg(errp, "failed to find host usb device %d:%d", |
| s->match.bus_num, s->match.addr); |
| return; |
| } |
| rc = usb_host_open(s, ldev, 0); |
| libusb_unref_device(ldev); |
| if (rc < 0) { |
| error_setg(errp, "failed to open host usb device %d:%d", |
| s->match.bus_num, s->match.addr); |
| return; |
| } |
| } else { |
| s->needs_autoscan = true; |
| QTAILQ_INSERT_TAIL(&hostdevs, s, next); |
| usb_host_auto_check(NULL); |
| } |
| |
| s->exit.notify = usb_host_exit_notifier; |
| qemu_add_exit_notifier(&s->exit); |
| } |
| |
| 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); |
| } |
| |
| static void usb_host_unrealize(USBDevice *udev) |
| { |
| USBHostDevice *s = USB_HOST_DEVICE(udev); |
| |
| qemu_remove_exit_notifier(&s->exit); |
| if (s->needs_autoscan) { |
| 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 < USB_MAX_INTERFACES; i++) { |
| rc = libusb_kernel_driver_active(s->dh, i); |
| usb_host_libusb_error("libusb_kernel_driver_active", rc); |
| if (rc != 1) { |
| if (rc == 0) { |
| s->ifs[i].detached = true; |
| } |
| 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 < USB_MAX_INTERFACES; 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, claimed; |
| |
| 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; |
| } |
| |
| claimed = 0; |
| for (i = 0; i < USB_MAX_INTERFACES; i++) { |
| trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i); |
| rc = libusb_claim_interface(s->dh, i); |
| if (rc == 0) { |
| s->ifs[i].claimed = true; |
| if (++claimed == conf->bNumInterfaces) { |
| break; |
| } |
| } |
| } |
| if (claimed != conf->bNumInterfaces) { |
| return USB_RET_STALL; |
| } |
| |
| udev->ninterfaces = conf->bNumInterfaces; |
| udev->configuration = configuration; |
| |
| libusb_free_config_descriptor(conf); |
| return USB_RET_SUCCESS; |
| } |
| |
| static void usb_host_release_interfaces(USBHostDevice *s) |
| { |
| int i, rc; |
| |
| for (i = 0; i < USB_MAX_INTERFACES; 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 = 0; |
| |
| trace_usb_host_set_config(s->bus_num, s->addr, config); |
| |
| usb_host_release_interfaces(s); |
| if (s->ddesc.bNumConfigurations != 1) { |
| 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->speedmask & USB_SPEED_MASK_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; |
| |
| if (!s->allow_one_guest_reset && !s->allow_all_guest_resets) { |
| return; |
| } |
| if (!s->allow_all_guest_resets && udev->addr == 0) { |
| return; |
| } |
| |
| 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 do 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); |
| } |
| dev->bh_postld_pending = false; |
| 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); |
| dev->bh_postld_pending = true; |
| 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), |
| #if LIBUSB_API_VERSION >= 0x01000107 |
| DEFINE_PROP_STRING("hostdevice", USBHostDevice, hostdevice), |
| #endif |
| DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), |
| DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32), |
| DEFINE_PROP_BOOL("guest-reset", USBHostDevice, |
| allow_one_guest_reset, true), |
| DEFINE_PROP_BOOL("guest-resets-all", USBHostDevice, |
| allow_all_guest_resets, false), |
| DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel, |
| LIBUSB_LOG_LEVEL_WARNING), |
| DEFINE_PROP_BIT("pipeline", USBHostDevice, options, |
| USB_HOST_OPT_PIPELINE, true), |
| DEFINE_PROP_BOOL("suppress-remote-wake", USBHostDevice, |
| suppress_remote_wake, 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->unrealize = usb_host_unrealize; |
| 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; |
| device_class_set_props(dc, 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) < 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); |
| } |
| |
| /** |
| * Check whether USB host device has a USB mass storage SCSI interface |
| */ |
| bool usb_host_dev_is_scsi_storage(USBDevice *ud) |
| { |
| USBHostDevice *uhd = USB_HOST_DEVICE(ud); |
| struct libusb_config_descriptor *conf; |
| const struct libusb_interface_descriptor *intf; |
| bool is_scsi_storage = false; |
| int i; |
| |
| if (!uhd || libusb_get_active_config_descriptor(uhd->dev, &conf) != 0) { |
| return false; |
| } |
| |
| for (i = 0; i < conf->bNumInterfaces; i++) { |
| intf = &conf->interface[i].altsetting[ud->altsetting[i]]; |
| if (intf->bInterfaceClass == LIBUSB_CLASS_MASS_STORAGE && |
| intf->bInterfaceSubClass == 6) { /* 6 means SCSI */ |
| is_scsi_storage = true; |
| break; |
| } |
| } |
| |
| libusb_free_config_descriptor(conf); |
| |
| return is_scsi_storage; |
| } |
| |
| 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); |
| } |