| /* |
| * 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 "console.h" |
| |
| #if defined(__linux__) |
| #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 class_id, |
| int vendor_id, int product_id, |
| const char *product_name, int speed); |
| static int usb_host_find_device(int *pbus_num, int *paddr, |
| char *product_name, int product_name_size, |
| const char *devname); |
| //#define DEBUG |
| |
| #ifdef DEBUG |
| #define dprintf printf |
| #else |
| #define dprintf(...) |
| #endif |
| |
| #define USBPROCBUS_PATH "/proc/bus/usb" |
| #define PRODUCT_NAME_SZ 32 |
| #define MAX_ENDPOINTS 16 |
| #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 */ |
| struct endp_data { |
| uint8_t type; |
| uint8_t halted; |
| }; |
| |
| 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 contigious 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[1024]; |
| }; |
| |
| typedef struct USBHostDevice { |
| USBDevice dev; |
| int fd; |
| |
| uint8_t descr[1024]; |
| int descr_len; |
| int configuration; |
| int ninterfaces; |
| int closing; |
| |
| struct ctrl_struct ctrl; |
| struct endp_data endp_table[MAX_ENDPOINTS]; |
| |
| /* Host side address */ |
| int bus_num; |
| int addr; |
| |
| struct USBHostDevice *next; |
| } USBHostDevice; |
| |
| static int is_isoc(USBHostDevice *s, int ep) |
| { |
| return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
| } |
| |
| 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 USBHostDevice *hostdev_list; |
| |
| static void hostdev_link(USBHostDevice *dev) |
| { |
| dev->next = hostdev_list; |
| hostdev_list = dev; |
| } |
| |
| static void hostdev_unlink(USBHostDevice *dev) |
| { |
| USBHostDevice *pdev = hostdev_list; |
| USBHostDevice **prev = &hostdev_list; |
| |
| while (pdev) { |
| if (pdev == dev) { |
| *prev = dev->next; |
| return; |
| } |
| |
| prev = &pdev->next; |
| pdev = pdev->next; |
| } |
| } |
| |
| static USBHostDevice *hostdev_find(int bus_num, int addr) |
| { |
| USBHostDevice *s = hostdev_list; |
| while (s) { |
| if (s->bus_num == bus_num && s->addr == addr) |
| return s; |
| s = s->next; |
| } |
| return NULL; |
| } |
| |
| /* |
| * Async URB state. |
| * We always allocate one isoc descriptor even for bulk transfers |
| * to simplify allocation and casts. |
| */ |
| typedef struct AsyncURB |
| { |
| struct usbdevfs_urb urb; |
| struct usbdevfs_iso_packet_desc isocpd; |
| |
| USBPacket *packet; |
| USBHostDevice *hdev; |
| } AsyncURB; |
| |
| 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_device_del_addr(0, s->dev.addr); |
| return; |
| } |
| |
| dprintf("husb: async. reap urb failed errno %d\n", errno); |
| return; |
| } |
| |
| p = aurb->packet; |
| |
| dprintf("husb: async completed. aurb %p status %d alen %d\n", |
| aurb, aurb->urb.status, aurb->urb.actual_length); |
| |
| 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); |
| /* fall through */ |
| default: |
| p->len = USB_RET_NAK; |
| break; |
| } |
| |
| usb_packet_complete(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, nb_configurations; |
| 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; |
| nb_configurations = dev->descr[17]; |
| |
| 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; |
| 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 = (USBHostDevice *) 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; |
| |
| s->closing = 1; |
| |
| qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
| |
| hostdev_unlink(s); |
| |
| async_complete(s); |
| |
| if (s->fd >= 0) |
| close(s->fd); |
| |
| qemu_free(s); |
| } |
| |
| static int usb_linux_update_endp_table(USBHostDevice *s); |
| |
| static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
| { |
| struct usbdevfs_urb *urb; |
| AsyncURB *aurb; |
| int ret; |
| |
| aurb = async_alloc(); |
| if (!aurb) { |
| dprintf("husb: async malloc failed\n"); |
| return USB_RET_NAK; |
| } |
| aurb->hdev = s; |
| aurb->packet = p; |
| |
| urb = &aurb->urb; |
| |
| if (p->pid == USB_TOKEN_IN) |
| urb->endpoint = p->devep | 0x80; |
| else |
| urb->endpoint = p->devep; |
| |
| if (is_halted(s, p->devep)) { |
| ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
| if (ret < 0) { |
| dprintf("husb: failed to clear halt. ep 0x%x errno %d\n", |
| urb->endpoint, errno); |
| return USB_RET_NAK; |
| } |
| clear_halt(s, p->devep); |
| } |
| |
| urb->buffer = p->data; |
| urb->buffer_length = p->len; |
| |
| if (is_isoc(s, p->devep)) { |
| /* Setup ISOC transfer */ |
| urb->type = USBDEVFS_URB_TYPE_ISO; |
| urb->flags = USBDEVFS_URB_ISO_ASAP; |
| urb->number_of_packets = 1; |
| urb->iso_frame_desc[0].length = p->len; |
| } else { |
| /* Setup bulk transfer */ |
| 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 ret; |
| |
| 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; |
| |
| /* |
| * 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 */ |
| |
| aurb = async_alloc(); |
| if (!aurb) { |
| dprintf("husb: async malloc failed\n"); |
| return USB_RET_NAK; |
| } |
| aurb->hdev = s; |
| aurb->packet = p; |
| |
| /* |
| * Setup ctrl transfer. |
| * |
| * s->ctrl is layed 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 = 8 + s->ctrl.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->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; |
| } |
| } |
| |
| /* 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; |
| struct usbdevfs_ctrltransfer ct; |
| int interface, ret, length, i; |
| |
| 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_update_endp_table"); |
| return 1; |
| } |
| |
| /* in address state */ |
| if (configuration == 0) |
| return 1; |
| |
| /* 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]; |
| |
| 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_interface; |
| ct.timeout = 50; |
| |
| ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
| if (ret < 0) { |
| perror("usb_linux_update_endp_table"); |
| return 1; |
| } |
| |
| /* 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; |
| 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 USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) |
| { |
| int fd = -1, ret; |
| USBHostDevice *dev = NULL; |
| struct usbdevfs_connectinfo ci; |
| char buf[1024]; |
| |
| dev = qemu_mallocz(sizeof(USBHostDevice)); |
| if (!dev) |
| goto fail; |
| |
| dev->bus_num = bus_num; |
| dev->addr = addr; |
| |
| 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); |
| |
| /* 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 |
| |
| dev->fd = fd; |
| |
| /* |
| * 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; |
| |
| dev->dev.handle_packet = usb_host_handle_packet; |
| dev->dev.handle_reset = usb_host_handle_reset; |
| dev->dev.handle_destroy = usb_host_handle_destroy; |
| |
| if (!prod_name || prod_name[0] == '\0') |
| snprintf(dev->dev.devname, sizeof(dev->dev.devname), |
| "host:%d.%d", bus_num, addr); |
| else |
| pstrcpy(dev->dev.devname, sizeof(dev->dev.devname), |
| prod_name); |
| |
| /* USB devio uses 'write' flag to check for async completions */ |
| qemu_set_fd_handler(dev->fd, NULL, async_complete, dev); |
| |
| hostdev_link(dev); |
| |
| return (USBDevice *) dev; |
| |
| fail: |
| if (dev) |
| qemu_free(dev); |
| |
| close(fd); |
| return NULL; |
| } |
| |
| static int usb_host_auto_add(const char *spec); |
| static int usb_host_auto_del(const char *spec); |
| |
| USBDevice *usb_host_device_open(const char *devname) |
| { |
| int bus_num, addr; |
| char product_name[PRODUCT_NAME_SZ]; |
| |
| if (strstr(devname, "auto:")) { |
| usb_host_auto_add(devname); |
| return NULL; |
| } |
| |
| if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
| devname) < 0) |
| return NULL; |
| |
| if (hostdev_find(bus_num, addr)) { |
| term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr); |
| return NULL; |
| } |
| |
| return usb_host_device_open_addr(bus_num, addr, product_name); |
| } |
| |
| int usb_host_device_close(const char *devname) |
| { |
| 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_del_addr(0, s->dev.addr); |
| return 0; |
| } |
| |
| 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 (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 = 0; |
| 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, 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, 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, device_file, device_name); |
| f = fopen(filename, "r"); |
| if (f) { |
| fgets(line, line_size, f); |
| fclose(f); |
| ret = 1; |
| } else { |
| term_printf("husb: could not open %s\n", filename); |
| } |
| |
| 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 = 0; |
| char line[1024]; |
| int bus_num, addr, 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; |
| bus_num = atoi(tmpstr); |
| |
| if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/devnum", de->d_name)) |
| goto the_end; |
| if (sscanf(line, "%d", &addr) != 1) |
| goto the_end; |
| |
| if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/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), USBSYSBUS_PATH "/devices/%s/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), USBSYSBUS_PATH "/devices/%s/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), USBSYSBUS_PATH "/devices/%s/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), USBSYSBUS_PATH "/devices/%s/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, 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) |
| { |
| FILE *f = 0; |
| DIR *dir = 0; |
| int ret = 0; |
| const char *devices = "/devices"; |
| const char *opened = "husb: opened %s%s\n"; |
| const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
| char devpath[PATH_MAX]; |
| |
| /* only check the host once */ |
| if (!usb_fs_type) { |
| 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(opened, USBPROCBUS_PATH, devices); |
| 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(opened, USBDEVBUS_PATH, devices); |
| goto found_devices; |
| } |
| 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(opened, USBSYSBUS_PATH, devices); |
| goto found_devices; |
| } |
| found_devices: |
| if (!usb_fs_type) { |
| term_printf("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); |
| if (usb_host_device_path) { |
| strcpy(usb_host_device_path, devpath); |
| term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path); |
| } else { |
| /* out of memory? */ |
| perror("husb: unable to allocate memory for device path"); |
| return -ENOMEM; |
| } |
| } |
| |
| 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; |
| } |
| |
| struct USBAutoFilter { |
| struct USBAutoFilter *next; |
| int bus_num; |
| int addr; |
| int vendor_id; |
| int product_id; |
| }; |
| |
| static QEMUTimer *usb_auto_timer; |
| static struct USBAutoFilter *usb_auto_filter; |
| |
| static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
| int class_id, int vendor_id, int product_id, |
| const char *product_name, int speed) |
| { |
| struct USBAutoFilter *f; |
| struct USBDevice *dev; |
| |
| /* Ignore hubs */ |
| if (class_id == 9) |
| return 0; |
| |
| for (f = usb_auto_filter; f; f = f->next) { |
| 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 */ |
| |
| /* Allredy attached ? */ |
| if (hostdev_find(bus_num, addr)) |
| return 0; |
| |
| dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr); |
| |
| dev = usb_host_device_open_addr(bus_num, addr, product_name); |
| if (dev) |
| usb_device_add_dev(dev); |
| } |
| |
| return 0; |
| } |
| |
| static void usb_host_auto_timer(void *unused) |
| { |
| usb_host_scan(NULL, usb_host_auto_scan); |
| qemu_mod_timer(usb_auto_timer, qemu_get_clock(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 = -1; |
| f->addr = -1; |
| f->vendor_id = -1; |
| f->product_id = -1; |
| |
| 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; |
| } |
| |
| static int match_filter(const struct USBAutoFilter *f1, |
| const struct USBAutoFilter *f2) |
| { |
| return f1->bus_num == f2->bus_num && |
| f1->addr == f2->addr && |
| f1->vendor_id == f2->vendor_id && |
| f1->product_id == f2->product_id; |
| } |
| |
| static int usb_host_auto_add(const char *spec) |
| { |
| struct USBAutoFilter filter, *f; |
| |
| if (parse_filter(spec, &filter) < 0) |
| return -1; |
| |
| f = qemu_mallocz(sizeof(*f)); |
| if (!f) { |
| fprintf(stderr, "husb: failed to allocate auto filter\n"); |
| return -1; |
| } |
| |
| *f = filter; |
| |
| if (!usb_auto_filter) { |
| /* |
| * First entry. Init and start the monitor. |
| * Right now we're using timer to check for new devices. |
| * If this turns out to be too expensive we can move that into a |
| * separate thread. |
| */ |
| usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL); |
| if (!usb_auto_timer) { |
| fprintf(stderr, "husb: failed to allocate auto scan timer\n"); |
| qemu_free(f); |
| return -1; |
| } |
| |
| /* Check for new devices every two seconds */ |
| qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000); |
| } |
| |
| dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n", |
| f->bus_num, f->addr, f->vendor_id, f->product_id); |
| |
| f->next = usb_auto_filter; |
| usb_auto_filter = f; |
| |
| return 0; |
| } |
| |
| static int usb_host_auto_del(const char *spec) |
| { |
| struct USBAutoFilter *pf = usb_auto_filter; |
| struct USBAutoFilter **prev = &usb_auto_filter; |
| struct USBAutoFilter filter; |
| |
| if (parse_filter(spec, &filter) < 0) |
| return -1; |
| |
| while (pf) { |
| if (match_filter(pf, &filter)) { |
| dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n", |
| pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); |
| |
| *prev = pf->next; |
| |
| if (!usb_auto_filter) { |
| /* No more filters. Stop scanning. */ |
| qemu_del_timer(usb_auto_timer); |
| qemu_free_timer(usb_auto_timer); |
| } |
| |
| return 0; |
| } |
| |
| prev = &pf->next; |
| pf = pf->next; |
| } |
| |
| return -1; |
| } |
| |
| typedef struct FindDeviceState { |
| int vendor_id; |
| int product_id; |
| int bus_num; |
| int addr; |
| char product_name[PRODUCT_NAME_SZ]; |
| } FindDeviceState; |
| |
| static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
| int class_id, |
| int vendor_id, int product_id, |
| const char *product_name, int speed) |
| { |
| FindDeviceState *s = opaque; |
| if ((vendor_id == s->vendor_id && |
| product_id == s->product_id) || |
| (bus_num == s->bus_num && |
| addr == s->addr)) { |
| pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
| s->bus_num = bus_num; |
| s->addr = addr; |
| return 1; |
| } else { |
| return 0; |
| } |
| } |
| |
| /* the syntax is : |
| 'bus.addr' (decimal numbers) or |
| 'vendor_id:product_id' (hexa numbers) */ |
| static int usb_host_find_device(int *pbus_num, int *paddr, |
| char *product_name, int product_name_size, |
| const char *devname) |
| { |
| const char *p; |
| int ret; |
| FindDeviceState fs; |
| |
| p = strchr(devname, '.'); |
| if (p) { |
| *pbus_num = strtoul(devname, NULL, 0); |
| *paddr = strtoul(p + 1, NULL, 0); |
| fs.bus_num = *pbus_num; |
| fs.addr = *paddr; |
| ret = usb_host_scan(&fs, usb_host_find_device_scan); |
| if (ret) |
| pstrcpy(product_name, product_name_size, fs.product_name); |
| return 0; |
| } |
| |
| p = strchr(devname, ':'); |
| if (p) { |
| fs.vendor_id = strtoul(devname, NULL, 16); |
| fs.product_id = strtoul(p + 1, NULL, 16); |
| ret = usb_host_scan(&fs, usb_host_find_device_scan); |
| if (ret) { |
| *pbus_num = fs.bus_num; |
| *paddr = fs.addr; |
| pstrcpy(product_name, product_name_size, fs.product_name); |
| return 0; |
| } |
| } |
| return -1; |
| } |
| |
| /**********************/ |
| /* 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(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; |
| } |
| |
| term_printf(" Device %d.%d, speed %s Mb/s\n", |
| bus_num, addr, speed_str); |
| class_str = usb_class_str(class_id); |
| if (class_str) |
| term_printf(" %s:", class_str); |
| else |
| term_printf(" Class %02x:", class_id); |
| term_printf(" USB device %04x:%04x", vendor_id, product_id); |
| if (product_name[0] != '\0') |
| term_printf(", %s", product_name); |
| term_printf("\n"); |
| } |
| |
| static int usb_host_info_device(void *opaque, int bus_num, int addr, |
| int class_id, |
| int vendor_id, int product_id, |
| const char *product_name, |
| int speed) |
| { |
| usb_info_device(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 == -1) |
| snprintf(str, size, "*"); |
| else |
| snprintf(str, size, "%d", val); |
| } |
| |
| static void hex2str(int val, char *str, size_t size) |
| { |
| if (val == -1) |
| snprintf(str, size, "*"); |
| else |
| snprintf(str, size, "%x", val); |
| } |
| |
| void usb_host_info(void) |
| { |
| struct USBAutoFilter *f; |
| |
| usb_host_scan(NULL, usb_host_info_device); |
| |
| if (usb_auto_filter) |
| term_printf(" Auto filters:\n"); |
| for (f = usb_auto_filter; f; f = f->next) { |
| char bus[10], addr[10], vid[10], pid[10]; |
| 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)); |
| term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid); |
| } |
| } |
| |
| #else |
| |
| #include "hw/usb.h" |
| |
| void usb_host_info(void) |
| { |
| term_printf("USB host devices not supported\n"); |
| } |
| |
| /* XXX: modify configure to compile the right host driver */ |
| USBDevice *usb_host_device_open(const char *devname) |
| { |
| return NULL; |
| } |
| |
| int usb_host_device_close(const char *devname) |
| { |
| return 0; |
| } |
| |
| #endif |