| /* |
| * 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 |
| * |
| * 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-common.h" |
| #include "qemu-timer.h" |
| #include "monitor.h" |
| #include "sysemu.h" |
| |
| #include <dirent.h> |
| #include <sys/ioctl.h> |
| #include <signal.h> |
| |
| #include <linux/usbdevice_fs.h> |
| #include <linux/version.h> |
| #include "hw/usb.h" |
| |
| /* We redefine it to avoid version problems */ |
| struct usb_ctrltransfer { |
| uint8_t bRequestType; |
| uint8_t bRequest; |
| uint16_t wValue; |
| uint16_t wIndex; |
| uint16_t wLength; |
| uint32_t timeout; |
| void *data; |
| }; |
| |
| struct usb_ctrlrequest { |
| uint8_t bRequestType; |
| uint8_t bRequest; |
| uint16_t wValue; |
| uint16_t wIndex; |
| uint16_t wLength; |
| }; |
| |
| typedef int USBScanFunc(void *opaque, int bus_num, int addr, int devpath, |
| int class_id, int vendor_id, int product_id, |
| const char *product_name, int speed); |
| |
| //#define DEBUG |
| |
| #ifdef DEBUG |
| #define DPRINTF printf |
| #else |
| #define DPRINTF(...) |
| #endif |
| |
| #define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
| |
| #define USBPROCBUS_PATH "/proc/bus/usb" |
| #define PRODUCT_NAME_SZ 32 |
| #define MAX_ENDPOINTS 15 |
| #define USBDEVBUS_PATH "/dev/bus/usb" |
| #define USBSYSBUS_PATH "/sys/bus/usb" |
| |
| static char *usb_host_device_path; |
| |
| #define USB_FS_NONE 0 |
| #define USB_FS_PROC 1 |
| #define USB_FS_DEV 2 |
| #define USB_FS_SYS 3 |
| |
| static int usb_fs_type; |
| |
| /* endpoint association data */ |
| #define ISO_FRAME_DESC_PER_URB 32 |
| #define ISO_URB_COUNT 3 |
| #define INVALID_EP_TYPE 255 |
| |
| typedef struct AsyncURB AsyncURB; |
| |
| struct endp_data { |
| uint8_t type; |
| uint8_t halted; |
| uint8_t iso_started; |
| AsyncURB *iso_urb; |
| int iso_urb_idx; |
| int iso_buffer_used; |
| int max_packet_size; |
| }; |
| |
| enum { |
| CTRL_STATE_IDLE = 0, |
| CTRL_STATE_SETUP, |
| CTRL_STATE_DATA, |
| CTRL_STATE_ACK |
| }; |
| |
| /* |
| * Control transfer state. |
| * Note that 'buffer' _must_ follow 'req' field because |
| * we need contiguous buffer when we submit control URB. |
| */ |
| struct ctrl_struct { |
| uint16_t len; |
| uint16_t offset; |
| uint8_t state; |
| struct usb_ctrlrequest req; |
| uint8_t buffer[8192]; |
| }; |
| |
| struct USBAutoFilter { |
| uint32_t bus_num; |
| uint32_t addr; |
| uint32_t vendor_id; |
| uint32_t product_id; |
| }; |
| |
| typedef struct USBHostDevice { |
| USBDevice dev; |
| int fd; |
| |
| uint8_t descr[1024]; |
| int descr_len; |
| int configuration; |
| int ninterfaces; |
| int closing; |
| Notifier exit; |
| |
| struct ctrl_struct ctrl; |
| struct endp_data endp_table[MAX_ENDPOINTS]; |
| |
| /* Host side address */ |
| int bus_num; |
| int addr; |
| int devpath; |
| struct USBAutoFilter match; |
| |
| QTAILQ_ENTRY(USBHostDevice) next; |
| } USBHostDevice; |
| |
| static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs); |
| |
| static int usb_host_close(USBHostDevice *dev); |
| static int parse_filter(const char *spec, struct USBAutoFilter *f); |
| static void usb_host_auto_check(void *unused); |
| static int usb_host_read_file(char *line, size_t line_size, |
| const char *device_file, const char *device_name); |
| |
| static int is_isoc(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
| } |
| |
| static int is_valid(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].type != INVALID_EP_TYPE; |
| } |
| |
| static int is_halted(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].halted; |
| } |
| |
| static void clear_halt(USBHostDevice *s, int ep) |
| { |
| s->endp_table[ep - 1].halted = 0; |
| } |
| |
| static void set_halt(USBHostDevice *s, int ep) |
| { |
| s->endp_table[ep - 1].halted = 1; |
| } |
| |
| static int is_iso_started(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].iso_started; |
| } |
| |
| static void clear_iso_started(USBHostDevice *s, int ep) |
| { |
| s->endp_table[ep - 1].iso_started = 0; |
| } |
| |
| static void set_iso_started(USBHostDevice *s, int ep) |
| { |
| s->endp_table[ep - 1].iso_started = 1; |
| } |
| |
| static void set_iso_urb(USBHostDevice *s, int ep, AsyncURB *iso_urb) |
| { |
| s->endp_table[ep - 1].iso_urb = iso_urb; |
| } |
| |
| static AsyncURB *get_iso_urb(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].iso_urb; |
| } |
| |
| static void set_iso_urb_idx(USBHostDevice *s, int ep, int i) |
| { |
| s->endp_table[ep - 1].iso_urb_idx = i; |
| } |
| |
| static int get_iso_urb_idx(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].iso_urb_idx; |
| } |
| |
| static void set_iso_buffer_used(USBHostDevice *s, int ep, int i) |
| { |
| s->endp_table[ep - 1].iso_buffer_used = i; |
| } |
| |
| static int get_iso_buffer_used(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].iso_buffer_used; |
| } |
| |
| static int get_max_packet_size(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].max_packet_size; |
| } |
| |
| /* |
| * Async URB state. |
| * We always allocate iso packet descriptors even for bulk transfers |
| * to simplify allocation and casts. |
| */ |
| struct AsyncURB |
| { |
| struct usbdevfs_urb urb; |
| struct usbdevfs_iso_packet_desc isocpd[ISO_FRAME_DESC_PER_URB]; |
| |
| /* For regular async urbs */ |
| USBPacket *packet; |
| USBHostDevice *hdev; |
| |
| /* For buffered iso handling */ |
| int iso_frame_idx; /* -1 means in flight */ |
| }; |
| |
| static AsyncURB *async_alloc(void) |
| { |
| return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
| } |
| |
| static void async_free(AsyncURB *aurb) |
| { |
| qemu_free(aurb); |
| } |
| |
| static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
| { |
| switch(s->ctrl.state) { |
| case CTRL_STATE_SETUP: |
| if (p->len < s->ctrl.len) |
| s->ctrl.len = p->len; |
| s->ctrl.state = CTRL_STATE_DATA; |
| p->len = 8; |
| break; |
| |
| case CTRL_STATE_ACK: |
| s->ctrl.state = CTRL_STATE_IDLE; |
| p->len = 0; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static void async_complete(void *opaque) |
| { |
| USBHostDevice *s = opaque; |
| AsyncURB *aurb; |
| |
| while (1) { |
| USBPacket *p; |
| |
| int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb); |
| if (r < 0) { |
| if (errno == EAGAIN) { |
| return; |
| } |
| if (errno == ENODEV && !s->closing) { |
| printf("husb: device %d.%d disconnected\n", |
| s->bus_num, s->addr); |
| usb_host_close(s); |
| usb_host_auto_check(NULL); |
| return; |
| } |
| |
| DPRINTF("husb: async. reap urb failed errno %d\n", errno); |
| return; |
| } |
| |
| DPRINTF("husb: async completed. aurb %p status %d alen %d\n", |
| aurb, aurb->urb.status, aurb->urb.actual_length); |
| |
| /* If this is a buffered iso urb mark it as complete and don't do |
| anything else (it is handled further in usb_host_handle_iso_data) */ |
| if (aurb->iso_frame_idx == -1) { |
| if (aurb->urb.status == -EPIPE) { |
| set_halt(s, aurb->urb.endpoint & 0xf); |
| } |
| aurb->iso_frame_idx = 0; |
| continue; |
| } |
| |
| p = aurb->packet; |
| |
| if (p) { |
| switch (aurb->urb.status) { |
| case 0: |
| p->len = aurb->urb.actual_length; |
| if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) { |
| async_complete_ctrl(s, p); |
| } |
| break; |
| |
| case -EPIPE: |
| set_halt(s, p->devep); |
| p->len = USB_RET_STALL; |
| break; |
| |
| default: |
| p->len = USB_RET_NAK; |
| break; |
| } |
| |
| usb_packet_complete(&s->dev, p); |
| } |
| |
| async_free(aurb); |
| } |
| } |
| |
| static void async_cancel(USBPacket *unused, void *opaque) |
| { |
| AsyncURB *aurb = opaque; |
| USBHostDevice *s = aurb->hdev; |
| |
| DPRINTF("husb: async cancel. aurb %p\n", aurb); |
| |
| /* Mark it as dead (see async_complete above) */ |
| aurb->packet = NULL; |
| |
| int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb); |
| if (r < 0) { |
| DPRINTF("husb: async. discard urb failed errno %d\n", errno); |
| } |
| } |
| |
| static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
| { |
| int dev_descr_len, config_descr_len; |
| int interface, nb_interfaces; |
| int ret, i; |
| |
| if (configuration == 0) /* address state - ignore */ |
| return 1; |
| |
| DPRINTF("husb: claiming interfaces. config %d\n", configuration); |
| |
| i = 0; |
| dev_descr_len = dev->descr[0]; |
| if (dev_descr_len > dev->descr_len) { |
| goto fail; |
| } |
| |
| i += dev_descr_len; |
| while (i < dev->descr_len) { |
| DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n", |
| i, dev->descr_len, |
| dev->descr[i], dev->descr[i+1]); |
| |
| if (dev->descr[i+1] != USB_DT_CONFIG) { |
| i += dev->descr[i]; |
| continue; |
| } |
| config_descr_len = dev->descr[i]; |
| |
| printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
| |
| if (configuration < 0 || configuration == dev->descr[i + 5]) { |
| configuration = dev->descr[i + 5]; |
| break; |
| } |
| |
| i += config_descr_len; |
| } |
| |
| if (i >= dev->descr_len) { |
| fprintf(stderr, |
| "husb: update iface failed. no matching configuration\n"); |
| goto fail; |
| } |
| nb_interfaces = dev->descr[i + 4]; |
| |
| #ifdef USBDEVFS_DISCONNECT |
| /* earlier Linux 2.4 do not support that */ |
| { |
| struct usbdevfs_ioctl ctrl; |
| for (interface = 0; interface < nb_interfaces; interface++) { |
| ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
| ctrl.ifno = interface; |
| ctrl.data = 0; |
| ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
| if (ret < 0 && errno != ENODATA) { |
| perror("USBDEVFS_DISCONNECT"); |
| goto fail; |
| } |
| } |
| } |
| #endif |
| |
| /* XXX: only grab if all interfaces are free */ |
| for (interface = 0; interface < nb_interfaces; interface++) { |
| ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
| if (ret < 0) { |
| if (errno == EBUSY) { |
| printf("husb: update iface. device already grabbed\n"); |
| } else { |
| perror("husb: failed to claim interface"); |
| } |
| fail: |
| return 0; |
| } |
| } |
| |
| printf("husb: %d interfaces claimed for configuration %d\n", |
| nb_interfaces, configuration); |
| |
| dev->ninterfaces = nb_interfaces; |
| dev->configuration = configuration; |
| return 1; |
| } |
| |
| static int usb_host_release_interfaces(USBHostDevice *s) |
| { |
| int ret, i; |
| |
| DPRINTF("husb: releasing interfaces\n"); |
| |
| for (i = 0; i < s->ninterfaces; i++) { |
| ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
| if (ret < 0) { |
| perror("husb: failed to release interface"); |
| return 0; |
| } |
| } |
| |
| return 1; |
| } |
| |
| static void usb_host_handle_reset(USBDevice *dev) |
| { |
| USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| |
| DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr); |
| |
| ioctl(s->fd, USBDEVFS_RESET); |
| |
| usb_host_claim_interfaces(s, s->configuration); |
| } |
| |
| static void usb_host_handle_destroy(USBDevice *dev) |
| { |
| USBHostDevice *s = (USBHostDevice *)dev; |
| |
| usb_host_close(s); |
| QTAILQ_REMOVE(&hostdevs, s, next); |
| qemu_remove_exit_notifier(&s->exit); |
| } |
| |
| static int usb_linux_update_endp_table(USBHostDevice *s); |
| |
| /* iso data is special, we need to keep enough urbs in flight to make sure |
| that the controller never runs out of them, otherwise the device will |
| likely suffer a buffer underrun / overrun. */ |
| static AsyncURB *usb_host_alloc_iso(USBHostDevice *s, uint8_t ep, int in) |
| { |
| AsyncURB *aurb; |
| int i, j, len = get_max_packet_size(s, ep); |
| |
| aurb = qemu_mallocz(ISO_URB_COUNT * sizeof(*aurb)); |
| for (i = 0; i < ISO_URB_COUNT; i++) { |
| aurb[i].urb.endpoint = ep; |
| aurb[i].urb.buffer_length = ISO_FRAME_DESC_PER_URB * len; |
| aurb[i].urb.buffer = qemu_malloc(aurb[i].urb.buffer_length); |
| aurb[i].urb.type = USBDEVFS_URB_TYPE_ISO; |
| aurb[i].urb.flags = USBDEVFS_URB_ISO_ASAP; |
| aurb[i].urb.number_of_packets = ISO_FRAME_DESC_PER_URB; |
| for (j = 0 ; j < ISO_FRAME_DESC_PER_URB; j++) |
| aurb[i].urb.iso_frame_desc[j].length = len; |
| if (in) { |
| aurb[i].urb.endpoint |= 0x80; |
| /* Mark as fully consumed (idle) */ |
| aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB; |
| } |
| } |
| set_iso_urb(s, ep, aurb); |
| |
| return aurb; |
| } |
| |
| static void usb_host_stop_n_free_iso(USBHostDevice *s, uint8_t ep) |
| { |
| AsyncURB *aurb; |
| int i, ret, killed = 0, free = 1; |
| |
| aurb = get_iso_urb(s, ep); |
| if (!aurb) { |
| return; |
| } |
| |
| for (i = 0; i < ISO_URB_COUNT; i++) { |
| /* in flight? */ |
| if (aurb[i].iso_frame_idx == -1) { |
| ret = ioctl(s->fd, USBDEVFS_DISCARDURB, &aurb[i]); |
| if (ret < 0) { |
| printf("husb: discard isoc in urb failed errno %d\n", errno); |
| free = 0; |
| continue; |
| } |
| killed++; |
| } |
| } |
| |
| /* Make sure any urbs we've killed are reaped before we free them */ |
| if (killed) { |
| async_complete(s); |
| } |
| |
| for (i = 0; i < ISO_URB_COUNT; i++) { |
| qemu_free(aurb[i].urb.buffer); |
| } |
| |
| if (free) |
| qemu_free(aurb); |
| else |
| printf("husb: leaking iso urbs because of discard failure\n"); |
| set_iso_urb(s, ep, NULL); |
| set_iso_urb_idx(s, ep, 0); |
| clear_iso_started(s, ep); |
| } |
| |
| static int urb_status_to_usb_ret(int status) |
| { |
| switch (status) { |
| case -EPIPE: |
| return USB_RET_STALL; |
| default: |
| return USB_RET_NAK; |
| } |
| } |
| |
| static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p, int in) |
| { |
| AsyncURB *aurb; |
| int i, j, ret, max_packet_size, offset, len = 0; |
| |
| max_packet_size = get_max_packet_size(s, p->devep); |
| if (max_packet_size == 0) |
| return USB_RET_NAK; |
| |
| aurb = get_iso_urb(s, p->devep); |
| if (!aurb) { |
| aurb = usb_host_alloc_iso(s, p->devep, in); |
| } |
| |
| i = get_iso_urb_idx(s, p->devep); |
| j = aurb[i].iso_frame_idx; |
| if (j >= 0 && j < ISO_FRAME_DESC_PER_URB) { |
| if (in) { |
| /* Check urb status */ |
| if (aurb[i].urb.status) { |
| len = urb_status_to_usb_ret(aurb[i].urb.status); |
| /* Move to the next urb */ |
| aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB - 1; |
| /* Check frame status */ |
| } else if (aurb[i].urb.iso_frame_desc[j].status) { |
| len = urb_status_to_usb_ret( |
| aurb[i].urb.iso_frame_desc[j].status); |
| /* Check the frame fits */ |
| } else if (aurb[i].urb.iso_frame_desc[j].actual_length > p->len) { |
| printf("husb: received iso data is larger then packet\n"); |
| len = USB_RET_NAK; |
| /* All good copy data over */ |
| } else { |
| len = aurb[i].urb.iso_frame_desc[j].actual_length; |
| memcpy(p->data, |
| aurb[i].urb.buffer + |
| j * aurb[i].urb.iso_frame_desc[0].length, |
| len); |
| } |
| } else { |
| len = p->len; |
| offset = (j == 0) ? 0 : get_iso_buffer_used(s, p->devep); |
| |
| /* Check the frame fits */ |
| if (len > max_packet_size) { |
| printf("husb: send iso data is larger then max packet size\n"); |
| return USB_RET_NAK; |
| } |
| |
| /* All good copy data over */ |
| memcpy(aurb[i].urb.buffer + offset, p->data, len); |
| aurb[i].urb.iso_frame_desc[j].length = len; |
| offset += len; |
| set_iso_buffer_used(s, p->devep, offset); |
| |
| /* Start the stream once we have buffered enough data */ |
| if (!is_iso_started(s, p->devep) && i == 1 && j == 8) { |
| set_iso_started(s, p->devep); |
| } |
| } |
| aurb[i].iso_frame_idx++; |
| if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) { |
| i = (i + 1) % ISO_URB_COUNT; |
| set_iso_urb_idx(s, p->devep, i); |
| } |
| } else { |
| if (in) { |
| set_iso_started(s, p->devep); |
| } else { |
| DPRINTF("hubs: iso out error no free buffer, dropping packet\n"); |
| } |
| } |
| |
| if (is_iso_started(s, p->devep)) { |
| /* (Re)-submit all fully consumed / filled urbs */ |
| for (i = 0; i < ISO_URB_COUNT; i++) { |
| if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) { |
| ret = ioctl(s->fd, USBDEVFS_SUBMITURB, &aurb[i]); |
| if (ret < 0) { |
| printf("husb error submitting iso urb %d: %d\n", i, errno); |
| if (!in || len == 0) { |
| switch(errno) { |
| case ETIMEDOUT: |
| len = USB_RET_NAK; |
| case EPIPE: |
| default: |
| len = USB_RET_STALL; |
| } |
| } |
| break; |
| } |
| aurb[i].iso_frame_idx = -1; |
| } |
| } |
| } |
| |
| return len; |
| } |
| |
| static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
| { |
| struct usbdevfs_urb *urb; |
| AsyncURB *aurb; |
| int ret; |
| uint8_t ep; |
| |
| if (!is_valid(s, p->devep)) { |
| return USB_RET_NAK; |
| } |
| |
| if (p->pid == USB_TOKEN_IN) { |
| ep = p->devep | 0x80; |
| } else { |
| ep = p->devep; |
| } |
| |
| if (is_halted(s, p->devep)) { |
| ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &ep); |
| if (ret < 0) { |
| DPRINTF("husb: failed to clear halt. ep 0x%x errno %d\n", |
| ep, errno); |
| return USB_RET_NAK; |
| } |
| clear_halt(s, p->devep); |
| } |
| |
| if (is_isoc(s, p->devep)) { |
| return usb_host_handle_iso_data(s, p, p->pid == USB_TOKEN_IN); |
| } |
| |
| aurb = async_alloc(); |
| aurb->hdev = s; |
| aurb->packet = p; |
| |
| urb = &aurb->urb; |
| |
| urb->endpoint = ep; |
| urb->buffer = p->data; |
| urb->buffer_length = p->len; |
| urb->type = USBDEVFS_URB_TYPE_BULK; |
| urb->usercontext = s; |
| |
| ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
| |
| DPRINTF("husb: data submit. ep 0x%x len %u aurb %p\n", |
| urb->endpoint, p->len, aurb); |
| |
| if (ret < 0) { |
| DPRINTF("husb: submit failed. errno %d\n", errno); |
| async_free(aurb); |
| |
| switch(errno) { |
| case ETIMEDOUT: |
| return USB_RET_NAK; |
| case EPIPE: |
| default: |
| return USB_RET_STALL; |
| } |
| } |
| |
| usb_defer_packet(p, async_cancel, aurb); |
| return USB_RET_ASYNC; |
| } |
| |
| static int ctrl_error(void) |
| { |
| if (errno == ETIMEDOUT) { |
| return USB_RET_NAK; |
| } else { |
| return USB_RET_STALL; |
| } |
| } |
| |
| static int usb_host_set_address(USBHostDevice *s, int addr) |
| { |
| DPRINTF("husb: ctrl set addr %u\n", addr); |
| s->dev.addr = addr; |
| return 0; |
| } |
| |
| static int usb_host_set_config(USBHostDevice *s, int config) |
| { |
| usb_host_release_interfaces(s); |
| |
| int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config); |
| |
| DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno); |
| |
| if (ret < 0) { |
| return ctrl_error(); |
| } |
| usb_host_claim_interfaces(s, config); |
| return 0; |
| } |
| |
| static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
| { |
| struct usbdevfs_setinterface si; |
| int i, ret; |
| |
| for (i = 1; i <= MAX_ENDPOINTS; i++) { |
| if (is_isoc(s, i)) { |
| usb_host_stop_n_free_iso(s, i); |
| } |
| } |
| |
| si.interface = iface; |
| si.altsetting = alt; |
| ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
| |
| DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n", |
| iface, alt, ret, errno); |
| |
| if (ret < 0) { |
| return ctrl_error(); |
| } |
| usb_linux_update_endp_table(s); |
| return 0; |
| } |
| |
| static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
| { |
| struct usbdevfs_urb *urb; |
| AsyncURB *aurb; |
| int ret, value, index; |
| int buffer_len; |
| |
| /* |
| * Process certain standard device requests. |
| * These are infrequent and are processed synchronously. |
| */ |
| value = le16_to_cpu(s->ctrl.req.wValue); |
| index = le16_to_cpu(s->ctrl.req.wIndex); |
| |
| DPRINTF("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n", |
| s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
| s->ctrl.len); |
| |
| if (s->ctrl.req.bRequestType == 0) { |
| switch (s->ctrl.req.bRequest) { |
| case USB_REQ_SET_ADDRESS: |
| return usb_host_set_address(s, value); |
| |
| case USB_REQ_SET_CONFIGURATION: |
| return usb_host_set_config(s, value & 0xff); |
| } |
| } |
| |
| if (s->ctrl.req.bRequestType == 1 && |
| s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) { |
| return usb_host_set_interface(s, index, value); |
| } |
| |
| /* The rest are asynchronous */ |
| |
| buffer_len = 8 + s->ctrl.len; |
| if (buffer_len > sizeof(s->ctrl.buffer)) { |
| fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n", |
| buffer_len, sizeof(s->ctrl.buffer)); |
| return USB_RET_STALL; |
| } |
| |
| aurb = async_alloc(); |
| aurb->hdev = s; |
| aurb->packet = p; |
| |
| /* |
| * Setup ctrl transfer. |
| * |
| * s->ctrl is laid out such that data buffer immediately follows |
| * 'req' struct which is exactly what usbdevfs expects. |
| */ |
| urb = &aurb->urb; |
| |
| urb->type = USBDEVFS_URB_TYPE_CONTROL; |
| urb->endpoint = p->devep; |
| |
| urb->buffer = &s->ctrl.req; |
| urb->buffer_length = buffer_len; |
| |
| urb->usercontext = s; |
| |
| ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
| |
| DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb); |
| |
| if (ret < 0) { |
| DPRINTF("husb: submit failed. errno %d\n", errno); |
| async_free(aurb); |
| |
| switch(errno) { |
| case ETIMEDOUT: |
| return USB_RET_NAK; |
| case EPIPE: |
| default: |
| return USB_RET_STALL; |
| } |
| } |
| |
| usb_defer_packet(p, async_cancel, aurb); |
| return USB_RET_ASYNC; |
| } |
| |
| static int do_token_setup(USBDevice *dev, USBPacket *p) |
| { |
| USBHostDevice *s = (USBHostDevice *) dev; |
| int ret = 0; |
| |
| if (p->len != 8) { |
| return USB_RET_STALL; |
| } |
| |
| memcpy(&s->ctrl.req, p->data, 8); |
| s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
| s->ctrl.offset = 0; |
| s->ctrl.state = CTRL_STATE_SETUP; |
| |
| if (s->ctrl.req.bRequestType & USB_DIR_IN) { |
| ret = usb_host_handle_control(s, p); |
| if (ret < 0) { |
| return ret; |
| } |
| |
| if (ret < s->ctrl.len) { |
| s->ctrl.len = ret; |
| } |
| s->ctrl.state = CTRL_STATE_DATA; |
| } else { |
| if (s->ctrl.len == 0) { |
| s->ctrl.state = CTRL_STATE_ACK; |
| } else { |
| s->ctrl.state = CTRL_STATE_DATA; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int do_token_in(USBDevice *dev, USBPacket *p) |
| { |
| USBHostDevice *s = (USBHostDevice *) dev; |
| int ret = 0; |
| |
| if (p->devep != 0) { |
| return usb_host_handle_data(s, p); |
| } |
| |
| switch(s->ctrl.state) { |
| case CTRL_STATE_ACK: |
| if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { |
| ret = usb_host_handle_control(s, p); |
| if (ret == USB_RET_ASYNC) { |
| return USB_RET_ASYNC; |
| } |
| s->ctrl.state = CTRL_STATE_IDLE; |
| return ret > 0 ? 0 : ret; |
| } |
| |
| return 0; |
| |
| case CTRL_STATE_DATA: |
| if (s->ctrl.req.bRequestType & USB_DIR_IN) { |
| int len = s->ctrl.len - s->ctrl.offset; |
| if (len > p->len) { |
| len = p->len; |
| } |
| memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
| s->ctrl.offset += len; |
| if (s->ctrl.offset >= s->ctrl.len) { |
| s->ctrl.state = CTRL_STATE_ACK; |
| } |
| return len; |
| } |
| |
| s->ctrl.state = CTRL_STATE_IDLE; |
| return USB_RET_STALL; |
| |
| default: |
| return USB_RET_STALL; |
| } |
| } |
| |
| static int do_token_out(USBDevice *dev, USBPacket *p) |
| { |
| USBHostDevice *s = (USBHostDevice *) dev; |
| |
| if (p->devep != 0) { |
| return usb_host_handle_data(s, p); |
| } |
| |
| switch(s->ctrl.state) { |
| case CTRL_STATE_ACK: |
| if (s->ctrl.req.bRequestType & USB_DIR_IN) { |
| s->ctrl.state = CTRL_STATE_IDLE; |
| /* transfer OK */ |
| } else { |
| /* ignore additional output */ |
| } |
| return 0; |
| |
| case CTRL_STATE_DATA: |
| if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { |
| int len = s->ctrl.len - s->ctrl.offset; |
| if (len > p->len) { |
| len = p->len; |
| } |
| memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
| s->ctrl.offset += len; |
| if (s->ctrl.offset >= s->ctrl.len) { |
| s->ctrl.state = CTRL_STATE_ACK; |
| } |
| return len; |
| } |
| |
| s->ctrl.state = CTRL_STATE_IDLE; |
| return USB_RET_STALL; |
| |
| default: |
| return USB_RET_STALL; |
| } |
| } |
| |
| /* |
| * Packet handler. |
| * Called by the HC (host controller). |
| * |
| * Returns length of the transaction or one of the USB_RET_XXX codes. |
| */ |
| static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
| { |
| switch(p->pid) { |
| case USB_MSG_ATTACH: |
| s->state = USB_STATE_ATTACHED; |
| return 0; |
| |
| case USB_MSG_DETACH: |
| s->state = USB_STATE_NOTATTACHED; |
| return 0; |
| |
| case USB_MSG_RESET: |
| s->remote_wakeup = 0; |
| s->addr = 0; |
| s->state = USB_STATE_DEFAULT; |
| s->info->handle_reset(s); |
| return 0; |
| } |
| |
| /* Rest of the PIDs must match our address */ |
| if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) { |
| return USB_RET_NODEV; |
| } |
| |
| switch (p->pid) { |
| case USB_TOKEN_SETUP: |
| return do_token_setup(s, p); |
| |
| case USB_TOKEN_IN: |
| return do_token_in(s, p); |
| |
| case USB_TOKEN_OUT: |
| return do_token_out(s, p); |
| |
| default: |
| return USB_RET_STALL; |
| } |
| } |
| |
| static int usb_linux_get_configuration(USBHostDevice *s) |
| { |
| uint8_t configuration; |
| struct usb_ctrltransfer ct; |
| int ret; |
| |
| if (usb_fs_type == USB_FS_SYS) { |
| char device_name[32], line[1024]; |
| int configuration; |
| |
| sprintf(device_name, "%d-%d", s->bus_num, s->devpath); |
| |
| if (!usb_host_read_file(line, sizeof(line), "bConfigurationValue", |
| device_name)) { |
| goto usbdevfs; |
| } |
| if (sscanf(line, "%d", &configuration) != 1) { |
| goto usbdevfs; |
| } |
| return configuration; |
| } |
| |
| usbdevfs: |
| ct.bRequestType = USB_DIR_IN; |
| ct.bRequest = USB_REQ_GET_CONFIGURATION; |
| ct.wValue = 0; |
| ct.wIndex = 0; |
| ct.wLength = 1; |
| ct.data = &configuration; |
| ct.timeout = 50; |
| |
| ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
| if (ret < 0) { |
| perror("usb_linux_get_configuration"); |
| return -1; |
| } |
| |
| /* in address state */ |
| if (configuration == 0) { |
| return -1; |
| } |
| |
| return configuration; |
| } |
| |
| static uint8_t usb_linux_get_alt_setting(USBHostDevice *s, |
| uint8_t configuration, uint8_t interface) |
| { |
| uint8_t alt_setting; |
| struct usb_ctrltransfer ct; |
| int ret; |
| |
| if (usb_fs_type == USB_FS_SYS) { |
| char device_name[64], line[1024]; |
| int alt_setting; |
| |
| sprintf(device_name, "%d-%d:%d.%d", s->bus_num, s->devpath, |
| (int)configuration, (int)interface); |
| |
| if (!usb_host_read_file(line, sizeof(line), "bAlternateSetting", |
| device_name)) { |
| goto usbdevfs; |
| } |
| if (sscanf(line, "%d", &alt_setting) != 1) { |
| goto usbdevfs; |
| } |
| return alt_setting; |
| } |
| |
| usbdevfs: |
| ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
| ct.bRequest = USB_REQ_GET_INTERFACE; |
| ct.wValue = 0; |
| ct.wIndex = interface; |
| ct.wLength = 1; |
| ct.data = &alt_setting; |
| ct.timeout = 50; |
| ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
| if (ret < 0) { |
| /* Assume alt 0 on error */ |
| return 0; |
| } |
| |
| return alt_setting; |
| } |
| |
| /* returns 1 on problem encountered or 0 for success */ |
| static int usb_linux_update_endp_table(USBHostDevice *s) |
| { |
| uint8_t *descriptors; |
| uint8_t devep, type, configuration, alt_interface; |
| int interface, length, i; |
| |
| for (i = 0; i < MAX_ENDPOINTS; i++) |
| s->endp_table[i].type = INVALID_EP_TYPE; |
| |
| i = usb_linux_get_configuration(s); |
| if (i < 0) |
| return 1; |
| configuration = i; |
| |
| /* get the desired configuration, interface, and endpoint descriptors |
| * from device description */ |
| descriptors = &s->descr[18]; |
| length = s->descr_len - 18; |
| i = 0; |
| |
| if (descriptors[i + 1] != USB_DT_CONFIG || |
| descriptors[i + 5] != configuration) { |
| DPRINTF("invalid descriptor data - configuration\n"); |
| return 1; |
| } |
| i += descriptors[i]; |
| |
| while (i < length) { |
| if (descriptors[i + 1] != USB_DT_INTERFACE || |
| (descriptors[i + 1] == USB_DT_INTERFACE && |
| descriptors[i + 4] == 0)) { |
| i += descriptors[i]; |
| continue; |
| } |
| |
| interface = descriptors[i + 2]; |
| alt_interface = usb_linux_get_alt_setting(s, configuration, interface); |
| |
| /* the current interface descriptor is the active interface |
| * and has endpoints */ |
| if (descriptors[i + 3] != alt_interface) { |
| i += descriptors[i]; |
| continue; |
| } |
| |
| /* advance to the endpoints */ |
| while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) { |
| i += descriptors[i]; |
| } |
| |
| if (i >= length) |
| break; |
| |
| while (i < length) { |
| if (descriptors[i + 1] != USB_DT_ENDPOINT) { |
| break; |
| } |
| |
| devep = descriptors[i + 2]; |
| switch (descriptors[i + 3] & 0x3) { |
| case 0x00: |
| type = USBDEVFS_URB_TYPE_CONTROL; |
| break; |
| case 0x01: |
| type = USBDEVFS_URB_TYPE_ISO; |
| s->endp_table[(devep & 0xf) - 1].max_packet_size = |
| descriptors[i + 4] + (descriptors[i + 5] << 8); |
| break; |
| case 0x02: |
| type = USBDEVFS_URB_TYPE_BULK; |
| break; |
| case 0x03: |
| type = USBDEVFS_URB_TYPE_INTERRUPT; |
| break; |
| default: |
| DPRINTF("usb_host: malformed endpoint type\n"); |
| type = USBDEVFS_URB_TYPE_BULK; |
| } |
| s->endp_table[(devep & 0xf) - 1].type = type; |
| s->endp_table[(devep & 0xf) - 1].halted = 0; |
| |
| i += descriptors[i]; |
| } |
| } |
| return 0; |
| } |
| |
| static int usb_host_open(USBHostDevice *dev, int bus_num, |
| int addr, int devpath, const char *prod_name) |
| { |
| int fd = -1, ret; |
| struct usbdevfs_connectinfo ci; |
| char buf[1024]; |
| |
| if (dev->fd != -1) { |
| goto fail; |
| } |
| printf("husb: open device %d.%d\n", bus_num, addr); |
| |
| if (!usb_host_device_path) { |
| perror("husb: USB Host Device Path not set"); |
| goto fail; |
| } |
| snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
| bus_num, addr); |
| fd = open(buf, O_RDWR | O_NONBLOCK); |
| if (fd < 0) { |
| perror(buf); |
| goto fail; |
| } |
| DPRINTF("husb: opened %s\n", buf); |
| |
| dev->bus_num = bus_num; |
| dev->addr = addr; |
| dev->devpath = devpath; |
| dev->fd = fd; |
| |
| /* read the device description */ |
| dev->descr_len = read(fd, dev->descr, sizeof(dev->descr)); |
| if (dev->descr_len <= 0) { |
| perror("husb: reading device data failed"); |
| goto fail; |
| } |
| |
| #ifdef DEBUG |
| { |
| int x; |
| printf("=== begin dumping device descriptor data ===\n"); |
| for (x = 0; x < dev->descr_len; x++) { |
| printf("%02x ", dev->descr[x]); |
| } |
| printf("\n=== end dumping device descriptor data ===\n"); |
| } |
| #endif |
| |
| |
| /* |
| * Initial configuration is -1 which makes us claim first |
| * available config. We used to start with 1, which does not |
| * always work. I've seen devices where first config starts |
| * with 2. |
| */ |
| if (!usb_host_claim_interfaces(dev, -1)) { |
| goto fail; |
| } |
| |
| ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
| if (ret < 0) { |
| perror("usb_host_device_open: USBDEVFS_CONNECTINFO"); |
| goto fail; |
| } |
| |
| printf("husb: grabbed usb device %d.%d\n", bus_num, addr); |
| |
| ret = usb_linux_update_endp_table(dev); |
| if (ret) { |
| goto fail; |
| } |
| |
| if (ci.slow) { |
| dev->dev.speed = USB_SPEED_LOW; |
| } else { |
| dev->dev.speed = USB_SPEED_HIGH; |
| } |
| |
| if (!prod_name || prod_name[0] == '\0') { |
| snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc), |
| "host:%d.%d", bus_num, addr); |
| } else { |
| pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc), |
| prod_name); |
| } |
| |
| /* USB devio uses 'write' flag to check for async completions */ |
| qemu_set_fd_handler(dev->fd, NULL, async_complete, dev); |
| |
| usb_device_attach(&dev->dev); |
| return 0; |
| |
| fail: |
| dev->fd = -1; |
| if (fd != -1) { |
| close(fd); |
| } |
| return -1; |
| } |
| |
| static int usb_host_close(USBHostDevice *dev) |
| { |
| int i; |
| |
| if (dev->fd == -1) { |
| return -1; |
| } |
| |
| qemu_set_fd_handler(dev->fd, NULL, NULL, NULL); |
| dev->closing = 1; |
| for (i = 1; i <= MAX_ENDPOINTS; i++) { |
| if (is_isoc(dev, i)) { |
| usb_host_stop_n_free_iso(dev, i); |
| } |
| } |
| async_complete(dev); |
| dev->closing = 0; |
| usb_device_detach(&dev->dev); |
| ioctl(dev->fd, USBDEVFS_RESET); |
| close(dev->fd); |
| dev->fd = -1; |
| return 0; |
| } |
| |
| static void usb_host_exit_notifier(struct Notifier* n) |
| { |
| USBHostDevice *s = container_of(n, USBHostDevice, exit); |
| |
| if (s->fd != -1) { |
| ioctl(s->fd, USBDEVFS_RESET); |
| } |
| } |
| |
| static int usb_host_initfn(USBDevice *dev) |
| { |
| USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); |
| |
| dev->auto_attach = 0; |
| s->fd = -1; |
| QTAILQ_INSERT_TAIL(&hostdevs, s, next); |
| s->exit.notify = usb_host_exit_notifier; |
| qemu_add_exit_notifier(&s->exit); |
| usb_host_auto_check(NULL); |
| return 0; |
| } |
| |
| static struct USBDeviceInfo usb_host_dev_info = { |
| .product_desc = "USB Host Device", |
| .qdev.name = "usb-host", |
| .qdev.size = sizeof(USBHostDevice), |
| .init = usb_host_initfn, |
| .handle_packet = usb_host_handle_packet, |
| .handle_reset = usb_host_handle_reset, |
| .handle_destroy = usb_host_handle_destroy, |
| .usbdevice_name = "host", |
| .usbdevice_init = usb_host_device_open, |
| .qdev.props = (Property[]) { |
| DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), |
| DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), |
| DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), |
| DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), |
| DEFINE_PROP_END_OF_LIST(), |
| }, |
| }; |
| |
| static void usb_host_register_devices(void) |
| { |
| usb_qdev_register(&usb_host_dev_info); |
| } |
| device_init(usb_host_register_devices) |
| |
| USBDevice *usb_host_device_open(const char *devname) |
| { |
| struct USBAutoFilter filter; |
| USBDevice *dev; |
| char *p; |
| |
| dev = usb_create(NULL /* FIXME */, "usb-host"); |
| |
| if (strstr(devname, "auto:")) { |
| if (parse_filter(devname, &filter) < 0) { |
| goto fail; |
| } |
| } else { |
| if ((p = strchr(devname, '.'))) { |
| filter.bus_num = strtoul(devname, NULL, 0); |
| filter.addr = strtoul(p + 1, NULL, 0); |
| filter.vendor_id = 0; |
| filter.product_id = 0; |
| } else if ((p = strchr(devname, ':'))) { |
| filter.bus_num = 0; |
| filter.addr = 0; |
| filter.vendor_id = strtoul(devname, NULL, 16); |
| filter.product_id = strtoul(p + 1, NULL, 16); |
| } else { |
| goto fail; |
| } |
| } |
| |
| qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num); |
| qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr); |
| qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id); |
| qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id); |
| qdev_init_nofail(&dev->qdev); |
| return dev; |
| |
| fail: |
| qdev_free(&dev->qdev); |
| return NULL; |
| } |
| |
| int usb_host_device_close(const char *devname) |
| { |
| #if 0 |
| char product_name[PRODUCT_NAME_SZ]; |
| int bus_num, addr; |
| USBHostDevice *s; |
| |
| if (strstr(devname, "auto:")) { |
| return usb_host_auto_del(devname); |
| } |
| if (usb_host_find_device(&bus_num, &addr, product_name, |
| sizeof(product_name), devname) < 0) { |
| return -1; |
| } |
| s = hostdev_find(bus_num, addr); |
| if (s) { |
| usb_device_delete_addr(s->bus_num, s->dev.addr); |
| return 0; |
| } |
| #endif |
| |
| return -1; |
| } |
| |
| static int get_tag_value(char *buf, int buf_size, |
| const char *str, const char *tag, |
| const char *stopchars) |
| { |
| const char *p; |
| char *q; |
| p = strstr(str, tag); |
| if (!p) { |
| return -1; |
| } |
| p += strlen(tag); |
| while (qemu_isspace(*p)) { |
| p++; |
| } |
| q = buf; |
| while (*p != '\0' && !strchr(stopchars, *p)) { |
| if ((q - buf) < (buf_size - 1)) { |
| *q++ = *p; |
| } |
| p++; |
| } |
| *q = '\0'; |
| return q - buf; |
| } |
| |
| /* |
| * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine |
| * host's USB devices. This is legacy support since many distributions |
| * are moving to /sys/bus/usb |
| */ |
| static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
| { |
| FILE *f = NULL; |
| char line[1024]; |
| char buf[1024]; |
| int bus_num, addr, speed, device_count, class_id, product_id, vendor_id; |
| char product_name[512]; |
| int ret = 0; |
| |
| if (!usb_host_device_path) { |
| perror("husb: USB Host Device Path not set"); |
| goto the_end; |
| } |
| snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
| f = fopen(line, "r"); |
| if (!f) { |
| perror("husb: cannot open devices file"); |
| goto the_end; |
| } |
| |
| device_count = 0; |
| bus_num = addr = speed = class_id = product_id = vendor_id = 0; |
| for(;;) { |
| if (fgets(line, sizeof(line), f) == NULL) { |
| break; |
| } |
| if (strlen(line) > 0) { |
| line[strlen(line) - 1] = '\0'; |
| } |
| if (line[0] == 'T' && line[1] == ':') { |
| if (device_count && (vendor_id || product_id)) { |
| /* New device. Add the previously discovered device. */ |
| ret = func(opaque, bus_num, addr, 0, class_id, vendor_id, |
| product_id, product_name, speed); |
| if (ret) { |
| goto the_end; |
| } |
| } |
| if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) { |
| goto fail; |
| } |
| bus_num = atoi(buf); |
| if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) { |
| goto fail; |
| } |
| addr = atoi(buf); |
| if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) { |
| goto fail; |
| } |
| if (!strcmp(buf, "480")) { |
| speed = USB_SPEED_HIGH; |
| } else if (!strcmp(buf, "1.5")) { |
| speed = USB_SPEED_LOW; |
| } else { |
| speed = USB_SPEED_FULL; |
| } |
| product_name[0] = '\0'; |
| class_id = 0xff; |
| device_count++; |
| product_id = 0; |
| vendor_id = 0; |
| } else if (line[0] == 'P' && line[1] == ':') { |
| if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) { |
| goto fail; |
| } |
| vendor_id = strtoul(buf, NULL, 16); |
| if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) { |
| goto fail; |
| } |
| product_id = strtoul(buf, NULL, 16); |
| } else if (line[0] == 'S' && line[1] == ':') { |
| if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) { |
| goto fail; |
| } |
| pstrcpy(product_name, sizeof(product_name), buf); |
| } else if (line[0] == 'D' && line[1] == ':') { |
| if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) { |
| goto fail; |
| } |
| class_id = strtoul(buf, NULL, 16); |
| } |
| fail: ; |
| } |
| if (device_count && (vendor_id || product_id)) { |
| /* Add the last device. */ |
| ret = func(opaque, bus_num, addr, 0, class_id, vendor_id, |
| product_id, product_name, speed); |
| } |
| the_end: |
| if (f) { |
| fclose(f); |
| } |
| return ret; |
| } |
| |
| /* |
| * Read sys file-system device file |
| * |
| * @line address of buffer to put file contents in |
| * @line_size size of line |
| * @device_file path to device file (printf format string) |
| * @device_name device being opened (inserted into device_file) |
| * |
| * @return 0 failed, 1 succeeded ('line' contains data) |
| */ |
| static int usb_host_read_file(char *line, size_t line_size, |
| const char *device_file, const char *device_name) |
| { |
| FILE *f; |
| int ret = 0; |
| char filename[PATH_MAX]; |
| |
| snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name, |
| device_file); |
| f = fopen(filename, "r"); |
| if (f) { |
| ret = fgets(line, line_size, f) != NULL; |
| fclose(f); |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * Use /sys/bus/usb/devices/ directory to determine host's USB |
| * devices. |
| * |
| * This code is based on Robert Schiele's original patches posted to |
| * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950 |
| */ |
| static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
| { |
| DIR *dir = NULL; |
| char line[1024]; |
| int bus_num, addr, devpath, speed, class_id, product_id, vendor_id; |
| int ret = 0; |
| char product_name[512]; |
| struct dirent *de; |
| |
| dir = opendir(USBSYSBUS_PATH "/devices"); |
| if (!dir) { |
| perror("husb: cannot open devices directory"); |
| goto the_end; |
| } |
| |
| while ((de = readdir(dir))) { |
| if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
| char *tmpstr = de->d_name; |
| if (!strncmp(de->d_name, "usb", 3)) { |
| tmpstr += 3; |
| } |
| if (sscanf(tmpstr, "%d-%d", &bus_num, &devpath) < 1) { |
| goto the_end; |
| } |
| |
| if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) { |
| goto the_end; |
| } |
| if (sscanf(line, "%d", &addr) != 1) { |
| goto the_end; |
| } |
| if (!usb_host_read_file(line, sizeof(line), "bDeviceClass", |
| de->d_name)) { |
| goto the_end; |
| } |
| if (sscanf(line, "%x", &class_id) != 1) { |
| goto the_end; |
| } |
| |
| if (!usb_host_read_file(line, sizeof(line), "idVendor", |
| de->d_name)) { |
| goto the_end; |
| } |
| if (sscanf(line, "%x", &vendor_id) != 1) { |
| goto the_end; |
| } |
| if (!usb_host_read_file(line, sizeof(line), "idProduct", |
| de->d_name)) { |
| goto the_end; |
| } |
| if (sscanf(line, "%x", &product_id) != 1) { |
| goto the_end; |
| } |
| if (!usb_host_read_file(line, sizeof(line), "product", |
| de->d_name)) { |
| *product_name = 0; |
| } else { |
| if (strlen(line) > 0) { |
| line[strlen(line) - 1] = '\0'; |
| } |
| pstrcpy(product_name, sizeof(product_name), line); |
| } |
| |
| if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) { |
| goto the_end; |
| } |
| if (!strcmp(line, "480\n")) { |
| speed = USB_SPEED_HIGH; |
| } else if (!strcmp(line, "1.5\n")) { |
| speed = USB_SPEED_LOW; |
| } else { |
| speed = USB_SPEED_FULL; |
| } |
| |
| ret = func(opaque, bus_num, addr, devpath, class_id, vendor_id, |
| product_id, product_name, speed); |
| if (ret) { |
| goto the_end; |
| } |
| } |
| } |
| the_end: |
| if (dir) { |
| closedir(dir); |
| } |
| return ret; |
| } |
| |
| /* |
| * Determine how to access the host's USB devices and call the |
| * specific support function. |
| */ |
| static int usb_host_scan(void *opaque, USBScanFunc *func) |
| { |
| Monitor *mon = cur_mon; |
| FILE *f = NULL; |
| DIR *dir = NULL; |
| int ret = 0; |
| const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
| char devpath[PATH_MAX]; |
| |
| /* only check the host once */ |
| if (!usb_fs_type) { |
| dir = opendir(USBSYSBUS_PATH "/devices"); |
| if (dir) { |
| /* devices found in /dev/bus/usb/ (yes - not a mistake!) */ |
| strcpy(devpath, USBDEVBUS_PATH); |
| usb_fs_type = USB_FS_SYS; |
| closedir(dir); |
| DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
| goto found_devices; |
| } |
| f = fopen(USBPROCBUS_PATH "/devices", "r"); |
| if (f) { |
| /* devices found in /proc/bus/usb/ */ |
| strcpy(devpath, USBPROCBUS_PATH); |
| usb_fs_type = USB_FS_PROC; |
| fclose(f); |
| DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
| goto found_devices; |
| } |
| /* try additional methods if an access method hasn't been found yet */ |
| f = fopen(USBDEVBUS_PATH "/devices", "r"); |
| if (f) { |
| /* devices found in /dev/bus/usb/ */ |
| strcpy(devpath, USBDEVBUS_PATH); |
| usb_fs_type = USB_FS_DEV; |
| fclose(f); |
| DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
| goto found_devices; |
| } |
| found_devices: |
| if (!usb_fs_type) { |
| if (mon) { |
| monitor_printf(mon, "husb: unable to access USB devices\n"); |
| } |
| return -ENOENT; |
| } |
| |
| /* the module setting (used later for opening devices) */ |
| usb_host_device_path = qemu_mallocz(strlen(devpath)+1); |
| strcpy(usb_host_device_path, devpath); |
| if (mon) { |
| monitor_printf(mon, "husb: using %s file-system with %s\n", |
| fs_type[usb_fs_type], usb_host_device_path); |
| } |
| } |
| |
| switch (usb_fs_type) { |
| case USB_FS_PROC: |
| case USB_FS_DEV: |
| ret = usb_host_scan_dev(opaque, func); |
| break; |
| case USB_FS_SYS: |
| ret = usb_host_scan_sys(opaque, func); |
| break; |
| default: |
| ret = -EINVAL; |
| break; |
| } |
| return ret; |
| } |
| |
| static QEMUTimer *usb_auto_timer; |
| |
| static int usb_host_auto_scan(void *opaque, int bus_num, int addr, int devpath, |
| int class_id, int vendor_id, int product_id, |
| const char *product_name, int speed) |
| { |
| struct USBAutoFilter *f; |
| struct USBHostDevice *s; |
| |
| /* Ignore hubs */ |
| if (class_id == 9) |
| return 0; |
| |
| QTAILQ_FOREACH(s, &hostdevs, next) { |
| f = &s->match; |
| |
| if (f->bus_num > 0 && f->bus_num != bus_num) { |
| continue; |
| } |
| if (f->addr > 0 && f->addr != addr) { |
| continue; |
| } |
| |
| if (f->vendor_id > 0 && f->vendor_id != vendor_id) { |
| continue; |
| } |
| |
| if (f->product_id > 0 && f->product_id != product_id) { |
| continue; |
| } |
| /* We got a match */ |
| |
| /* Already attached ? */ |
| if (s->fd != -1) { |
| return 0; |
| } |
| DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr); |
| |
| usb_host_open(s, bus_num, addr, devpath, product_name); |
| } |
| |
| return 0; |
| } |
| |
| static void usb_host_auto_check(void *unused) |
| { |
| struct USBHostDevice *s; |
| int unconnected = 0; |
| |
| usb_host_scan(NULL, usb_host_auto_scan); |
| |
| QTAILQ_FOREACH(s, &hostdevs, next) { |
| if (s->fd == -1) { |
| unconnected++; |
| } |
| } |
| |
| if (unconnected == 0) { |
| /* nothing to watch */ |
| if (usb_auto_timer) { |
| qemu_del_timer(usb_auto_timer); |
| } |
| return; |
| } |
| |
| if (!usb_auto_timer) { |
| usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL); |
| if (!usb_auto_timer) { |
| return; |
| } |
| } |
| qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000); |
| } |
| |
| /* |
| * Autoconnect filter |
| * Format: |
| * auto:bus:dev[:vid:pid] |
| * auto:bus.dev[:vid:pid] |
| * |
| * bus - bus number (dec, * means any) |
| * dev - device number (dec, * means any) |
| * vid - vendor id (hex, * means any) |
| * pid - product id (hex, * means any) |
| * |
| * See 'lsusb' output. |
| */ |
| static int parse_filter(const char *spec, struct USBAutoFilter *f) |
| { |
| enum { BUS, DEV, VID, PID, DONE }; |
| const char *p = spec; |
| int i; |
| |
| f->bus_num = 0; |
| f->addr = 0; |
| f->vendor_id = 0; |
| f->product_id = 0; |
| |
| for (i = BUS; i < DONE; i++) { |
| p = strpbrk(p, ":."); |
| if (!p) { |
| break; |
| } |
| p++; |
| |
| if (*p == '*') { |
| continue; |
| } |
| switch(i) { |
| case BUS: f->bus_num = strtol(p, NULL, 10); break; |
| case DEV: f->addr = strtol(p, NULL, 10); break; |
| case VID: f->vendor_id = strtol(p, NULL, 16); break; |
| case PID: f->product_id = strtol(p, NULL, 16); break; |
| } |
| } |
| |
| if (i < DEV) { |
| fprintf(stderr, "husb: invalid auto filter spec %s\n", spec); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| /**********************/ |
| /* USB host device info */ |
| |
| struct usb_class_info { |
| int class; |
| const char *class_name; |
| }; |
| |
| static const struct usb_class_info usb_class_info[] = { |
| { USB_CLASS_AUDIO, "Audio"}, |
| { USB_CLASS_COMM, "Communication"}, |
| { USB_CLASS_HID, "HID"}, |
| { USB_CLASS_HUB, "Hub" }, |
| { USB_CLASS_PHYSICAL, "Physical" }, |
| { USB_CLASS_PRINTER, "Printer" }, |
| { USB_CLASS_MASS_STORAGE, "Storage" }, |
| { USB_CLASS_CDC_DATA, "Data" }, |
| { USB_CLASS_APP_SPEC, "Application Specific" }, |
| { USB_CLASS_VENDOR_SPEC, "Vendor Specific" }, |
| { USB_CLASS_STILL_IMAGE, "Still Image" }, |
| { USB_CLASS_CSCID, "Smart Card" }, |
| { USB_CLASS_CONTENT_SEC, "Content Security" }, |
| { -1, NULL } |
| }; |
| |
| static const char *usb_class_str(uint8_t class) |
| { |
| const struct usb_class_info *p; |
| for(p = usb_class_info; p->class != -1; p++) { |
| if (p->class == class) { |
| break; |
| } |
| } |
| return p->class_name; |
| } |
| |
| static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id, |
| int vendor_id, int product_id, |
| const char *product_name, |
| int speed) |
| { |
| const char *class_str, *speed_str; |
| |
| switch(speed) { |
| case USB_SPEED_LOW: |
| speed_str = "1.5"; |
| break; |
| case USB_SPEED_FULL: |
| speed_str = "12"; |
| break; |
| case USB_SPEED_HIGH: |
| speed_str = "480"; |
| break; |
| default: |
| speed_str = "?"; |
| break; |
| } |
| |
| monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n", |
| bus_num, addr, speed_str); |
| class_str = usb_class_str(class_id); |
| if (class_str) { |
| monitor_printf(mon, " %s:", class_str); |
| } else { |
| monitor_printf(mon, " Class %02x:", class_id); |
| } |
| monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id); |
| if (product_name[0] != '\0') { |
| monitor_printf(mon, ", %s", product_name); |
| } |
| monitor_printf(mon, "\n"); |
| } |
| |
| static int usb_host_info_device(void *opaque, int bus_num, int addr, |
| int devpath, int class_id, |
| int vendor_id, int product_id, |
| const char *product_name, |
| int speed) |
| { |
| Monitor *mon = opaque; |
| |
| usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id, |
| product_name, speed); |
| return 0; |
| } |
| |
| static void dec2str(int val, char *str, size_t size) |
| { |
| if (val == 0) { |
| snprintf(str, size, "*"); |
| } else { |
| snprintf(str, size, "%d", val); |
| } |
| } |
| |
| static void hex2str(int val, char *str, size_t size) |
| { |
| if (val == 0) { |
| snprintf(str, size, "*"); |
| } else { |
| snprintf(str, size, "%04x", val); |
| } |
| } |
| |
| void usb_host_info(Monitor *mon) |
| { |
| struct USBAutoFilter *f; |
| struct USBHostDevice *s; |
| |
| usb_host_scan(mon, usb_host_info_device); |
| |
| if (QTAILQ_EMPTY(&hostdevs)) { |
| return; |
| } |
| |
| monitor_printf(mon, " Auto filters:\n"); |
| QTAILQ_FOREACH(s, &hostdevs, next) { |
| char bus[10], addr[10], vid[10], pid[10]; |
| f = &s->match; |
| dec2str(f->bus_num, bus, sizeof(bus)); |
| dec2str(f->addr, addr, sizeof(addr)); |
| hex2str(f->vendor_id, vid, sizeof(vid)); |
| hex2str(f->product_id, pid, sizeof(pid)); |
| monitor_printf(mon, " Device %s.%s ID %s:%s\n", |
| bus, addr, vid, pid); |
| } |
| } |