diff options
Diffstat (limited to 'hw/usb/host-linux.c')
| -rw-r--r-- | hw/usb/host-linux.c | 1913 |
1 files changed, 1913 insertions, 0 deletions
diff --git a/hw/usb/host-linux.c b/hw/usb/host-linux.c new file mode 100644 index 0000000..90919c2 --- /dev/null +++ b/hw/usb/host-linux.c @@ -0,0 +1,1913 @@ +/* + * 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 "trace.h" + +#include <dirent.h> +#include <sys/ioctl.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; +}; + +typedef int USBScanFunc(void *opaque, int bus_num, int addr, const char *port, + 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 PRODUCT_NAME_SZ 32 +#define MAX_PORTLEN 16 + +/* endpoint association data */ +#define ISO_FRAME_DESC_PER_URB 32 + +/* devio.c limits single requests to 16k */ +#define MAX_USBFS_BUFFER_SIZE 16384 + +typedef struct AsyncURB AsyncURB; + +struct endp_data { + uint8_t halted; + uint8_t iso_started; + AsyncURB *iso_urb; + int iso_urb_idx; + int iso_buffer_used; + int inflight; +}; + +struct USBAutoFilter { + uint32_t bus_num; + uint32_t addr; + char *port; + uint32_t vendor_id; + uint32_t product_id; +}; + +typedef struct USBHostDevice { + USBDevice dev; + int fd; + int hub_fd; + int hub_port; + + uint8_t descr[8192]; + int descr_len; + int closing; + uint32_t iso_urb_count; + Notifier exit; + + struct endp_data ep_in[USB_MAX_ENDPOINTS]; + struct endp_data ep_out[USB_MAX_ENDPOINTS]; + QLIST_HEAD(, AsyncURB) aurbs; + + /* Host side address */ + int bus_num; + int addr; + char port[MAX_PORTLEN]; + struct USBAutoFilter match; + int seen, errcount; + + 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 usb_linux_update_endp_table(USBHostDevice *s); + +static int usb_host_usbfs_type(USBHostDevice *s, USBPacket *p) +{ + static const int usbfs[] = { + [USB_ENDPOINT_XFER_CONTROL] = USBDEVFS_URB_TYPE_CONTROL, + [USB_ENDPOINT_XFER_ISOC] = USBDEVFS_URB_TYPE_ISO, + [USB_ENDPOINT_XFER_BULK] = USBDEVFS_URB_TYPE_BULK, + [USB_ENDPOINT_XFER_INT] = USBDEVFS_URB_TYPE_INTERRUPT, + }; + uint8_t type = p->ep->type; + assert(type < ARRAY_SIZE(usbfs)); + return usbfs[type]; +} + +static int usb_host_do_reset(USBHostDevice *dev) +{ + struct timeval s, e; + uint32_t usecs; + int ret; + + gettimeofday(&s, NULL); + ret = ioctl(dev->fd, USBDEVFS_RESET); + gettimeofday(&e, NULL); + usecs = (e.tv_sec - s.tv_sec) * 1000000; + usecs += e.tv_usec - s.tv_usec; + if (usecs > 1000000) { + /* more than a second, something is fishy, broken usb device? */ + fprintf(stderr, "husb: device %d:%d reset took %d.%06d seconds\n", + dev->bus_num, dev->addr, usecs / 1000000, usecs % 1000000); + } + return ret; +} + +static struct endp_data *get_endp(USBHostDevice *s, int pid, int ep) +{ + struct endp_data *eps = pid == USB_TOKEN_IN ? s->ep_in : s->ep_out; + assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT); + assert(ep > 0 && ep <= USB_MAX_ENDPOINTS); + return eps + ep - 1; +} + +static int is_isoc(USBHostDevice *s, int pid, int ep) +{ + return usb_ep_get_type(&s->dev, pid, ep) == USB_ENDPOINT_XFER_ISOC; +} + +static int is_valid(USBHostDevice *s, int pid, int ep) +{ + return usb_ep_get_type(&s->dev, pid, ep) != USB_ENDPOINT_XFER_INVALID; +} + +static int is_halted(USBHostDevice *s, int pid, int ep) +{ + return get_endp(s, pid, ep)->halted; +} + +static void clear_halt(USBHostDevice *s, int pid, int ep) +{ + trace_usb_host_ep_clear_halt(s->bus_num, s->addr, ep); + get_endp(s, pid, ep)->halted = 0; +} + +static void set_halt(USBHostDevice *s, int pid, int ep) +{ + if (ep != 0) { + trace_usb_host_ep_set_halt(s->bus_num, s->addr, ep); + get_endp(s, pid, ep)->halted = 1; + } +} + +static int is_iso_started(USBHostDevice *s, int pid, int ep) +{ + return get_endp(s, pid, ep)->iso_started; +} + +static void clear_iso_started(USBHostDevice *s, int pid, int ep) +{ + trace_usb_host_ep_stop_iso(s->bus_num, s->addr, ep); + get_endp(s, pid, ep)->iso_started = 0; +} + +static void set_iso_started(USBHostDevice *s, int pid, int ep) +{ + struct endp_data *e = get_endp(s, pid, ep); + + trace_usb_host_ep_start_iso(s->bus_num, s->addr, ep); + if (!e->iso_started) { + e->iso_started = 1; + e->inflight = 0; + } +} + +static int change_iso_inflight(USBHostDevice *s, int pid, int ep, int value) +{ + struct endp_data *e = get_endp(s, pid, ep); + + e->inflight += value; + return e->inflight; +} + +static void set_iso_urb(USBHostDevice *s, int pid, int ep, AsyncURB *iso_urb) +{ + get_endp(s, pid, ep)->iso_urb = iso_urb; +} + +static AsyncURB *get_iso_urb(USBHostDevice *s, int pid, int ep) +{ + return get_endp(s, pid, ep)->iso_urb; +} + +static void set_iso_urb_idx(USBHostDevice *s, int pid, int ep, int i) +{ + get_endp(s, pid, ep)->iso_urb_idx = i; +} + +static int get_iso_urb_idx(USBHostDevice *s, int pid, int ep) +{ + return get_endp(s, pid, ep)->iso_urb_idx; +} + +static void set_iso_buffer_used(USBHostDevice *s, int pid, int ep, int i) +{ + get_endp(s, pid, ep)->iso_buffer_used = i; +} + +static int get_iso_buffer_used(USBHostDevice *s, int pid, int ep) +{ + return get_endp(s, pid, ep)->iso_buffer_used; +} + +/* + * 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]; + USBHostDevice *hdev; + QLIST_ENTRY(AsyncURB) next; + + /* For regular async urbs */ + USBPacket *packet; + int more; /* large transfer, more urbs follow */ + + /* For buffered iso handling */ + int iso_frame_idx; /* -1 means in flight */ +}; + +static AsyncURB *async_alloc(USBHostDevice *s) +{ + AsyncURB *aurb = g_malloc0(sizeof(AsyncURB)); + aurb->hdev = s; + QLIST_INSERT_HEAD(&s->aurbs, aurb, next); + return aurb; +} + +static void async_free(AsyncURB *aurb) +{ + QLIST_REMOVE(aurb, next); + g_free(aurb); +} + +static void do_disconnect(USBHostDevice *s) +{ + usb_host_close(s); + usb_host_auto_check(NULL); +} + +static void async_complete(void *opaque) +{ + USBHostDevice *s = opaque; + AsyncURB *aurb; + int urbs = 0; + + while (1) { + USBPacket *p; + + int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb); + if (r < 0) { + if (errno == EAGAIN) { + if (urbs > 2) { + fprintf(stderr, "husb: %d iso urbs finished at once\n", urbs); + } + return; + } + if (errno == ENODEV) { + if (!s->closing) { + trace_usb_host_disconnect(s->bus_num, s->addr); + do_disconnect(s); + } + return; + } + + perror("USBDEVFS_REAPURBNDELAY"); + 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) { + int inflight; + int pid = (aurb->urb.endpoint & USB_DIR_IN) ? + USB_TOKEN_IN : USB_TOKEN_OUT; + int ep = aurb->urb.endpoint & 0xf; + if (aurb->urb.status == -EPIPE) { + set_halt(s, pid, ep); + } + aurb->iso_frame_idx = 0; + urbs++; + inflight = change_iso_inflight(s, pid, ep, -1); + if (inflight == 0 && is_iso_started(s, pid, ep)) { + fprintf(stderr, "husb: out of buffers for iso stream\n"); + } + continue; + } + + p = aurb->packet; + trace_usb_host_urb_complete(s->bus_num, s->addr, aurb, aurb->urb.status, + aurb->urb.actual_length, aurb->more); + + if (p) { + switch (aurb->urb.status) { + case 0: + p->result += aurb->urb.actual_length; + break; + + case -EPIPE: + set_halt(s, p->pid, p->ep->nr); + p->result = USB_RET_STALL; + break; + + case -EOVERFLOW: + p->result = USB_RET_BABBLE; + break; + + default: + p->result = USB_RET_IOERROR; + break; + } + + if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) { + trace_usb_host_req_complete(s->bus_num, s->addr, p->result); + usb_generic_async_ctrl_complete(&s->dev, p); + } else if (!aurb->more) { + trace_usb_host_req_complete(s->bus_num, s->addr, p->result); + usb_packet_complete(&s->dev, p); + } + } + + async_free(aurb); + } +} + +static void usb_host_async_cancel(USBDevice *dev, USBPacket *p) +{ + USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); + AsyncURB *aurb; + + QLIST_FOREACH(aurb, &s->aurbs, next) { + if (p != aurb->packet) { + continue; + } + + DPRINTF("husb: async cancel: packet %p, aurb %p\n", p, 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_open_device(int bus, int addr) +{ + const char *usbfs = NULL; + char filename[32]; + struct stat st; + int fd, rc; + + rc = stat("/dev/bus/usb", &st); + if (rc == 0 && S_ISDIR(st.st_mode)) { + /* udev-created device nodes available */ + usbfs = "/dev/bus/usb"; + } else { + /* fallback: usbfs mounted below /proc */ + usbfs = "/proc/bus/usb"; + } + + snprintf(filename, sizeof(filename), "%s/%03d/%03d", + usbfs, bus, addr); + fd = open(filename, O_RDWR | O_NONBLOCK); + if (fd < 0) { + fprintf(stderr, "husb: open %s: %s\n", filename, strerror(errno)); + } + return fd; +} + +static int usb_host_claim_port(USBHostDevice *s) +{ +#ifdef USBDEVFS_CLAIM_PORT + char *h, hub_name[64], line[1024]; + int hub_addr, ret; + + snprintf(hub_name, sizeof(hub_name), "%d-%s", + s->match.bus_num, s->match.port); + + /* try strip off last ".$portnr" to get hub */ + h = strrchr(hub_name, '.'); + if (h != NULL) { + s->hub_port = atoi(h+1); + *h = '\0'; + } else { + /* no dot in there -> it is the root hub */ + snprintf(hub_name, sizeof(hub_name), "usb%d", + s->match.bus_num); + s->hub_port = atoi(s->match.port); + } + + if (!usb_host_read_file(line, sizeof(line), "devnum", + hub_name)) { + return -1; + } + if (sscanf(line, "%d", &hub_addr) != 1) { + return -1; + } + + s->hub_fd = usb_host_open_device(s->match.bus_num, hub_addr); + if (s->hub_fd < 0) { + return -1; + } + + ret = ioctl(s->hub_fd, USBDEVFS_CLAIM_PORT, &s->hub_port); + if (ret < 0) { + close(s->hub_fd); + s->hub_fd = -1; + return -1; + } + + trace_usb_host_claim_port(s->match.bus_num, hub_addr, s->hub_port); + return 0; +#else + return -1; +#endif +} + +static void usb_host_release_port(USBHostDevice *s) +{ + if (s->hub_fd == -1) { + return; + } +#ifdef USBDEVFS_RELEASE_PORT + ioctl(s->hub_fd, USBDEVFS_RELEASE_PORT, &s->hub_port); +#endif + close(s->hub_fd); + s->hub_fd = -1; +} + +static int usb_host_disconnect_ifaces(USBHostDevice *dev, int nb_interfaces) +{ + /* earlier Linux 2.4 do not support that */ +#ifdef USBDEVFS_DISCONNECT + struct usbdevfs_ioctl ctrl; + int ret, interface; + + 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"); + return -1; + } + } +#endif + return 0; +} + +static int usb_linux_get_num_interfaces(USBHostDevice *s) +{ + char device_name[64], line[1024]; + int num_interfaces = 0; + + sprintf(device_name, "%d-%s", s->bus_num, s->port); + if (!usb_host_read_file(line, sizeof(line), "bNumInterfaces", + device_name)) { + return -1; + } + if (sscanf(line, "%d", &num_interfaces) != 1) { + return -1; + } + return num_interfaces; +} + +static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) +{ + const char *op = NULL; + int dev_descr_len, config_descr_len; + int interface, nb_interfaces; + int ret, i; + + for (i = 0; i < USB_MAX_INTERFACES; i++) { + dev->dev.altsetting[i] = 0; + } + + if (configuration == 0) { /* address state - ignore */ + dev->dev.ninterfaces = 0; + dev->dev.configuration = 0; + 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) { + fprintf(stderr, "husb: update iface failed. descr too short\n"); + return 0; + } + + 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]; + + DPRINTF("husb: config #%d need %d\n", dev->descr[i + 5], configuration); + + if (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"); + return 0; + } + nb_interfaces = dev->descr[i + 4]; + + if (usb_host_disconnect_ifaces(dev, nb_interfaces) < 0) { + goto fail; + } + + /* XXX: only grab if all interfaces are free */ + for (interface = 0; interface < nb_interfaces; interface++) { + op = "USBDEVFS_CLAIMINTERFACE"; + ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); + if (ret < 0) { + goto fail; + } + } + + trace_usb_host_claim_interfaces(dev->bus_num, dev->addr, + nb_interfaces, configuration); + + dev->dev.ninterfaces = nb_interfaces; + dev->dev.configuration = configuration; + return 1; + +fail: + if (errno == ENODEV) { + do_disconnect(dev); + } + perror(op); + return 0; +} + +static int usb_host_release_interfaces(USBHostDevice *s) +{ + int ret, i; + + trace_usb_host_release_interfaces(s->bus_num, s->addr); + + for (i = 0; i < s->dev.ninterfaces; i++) { + ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); + if (ret < 0) { + perror("USBDEVFS_RELEASEINTERFACE"); + return 0; + } + } + return 1; +} + +static void usb_host_handle_reset(USBDevice *dev) +{ + USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); + + trace_usb_host_reset(s->bus_num, s->addr); + + usb_host_do_reset(s);; + + usb_host_claim_interfaces(s, 0); + usb_linux_update_endp_table(s); +} + +static void usb_host_handle_destroy(USBDevice *dev) +{ + USBHostDevice *s = (USBHostDevice *)dev; + + usb_host_release_port(s); + usb_host_close(s); + QTAILQ_REMOVE(&hostdevs, s, next); + qemu_remove_exit_notifier(&s->exit); +} + +/* 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, int pid, uint8_t ep) +{ + AsyncURB *aurb; + int i, j, len = usb_ep_get_max_packet_size(&s->dev, pid, ep); + + aurb = g_malloc0(s->iso_urb_count * sizeof(*aurb)); + for (i = 0; i < s->iso_urb_count; i++) { + aurb[i].urb.endpoint = ep; + aurb[i].urb.buffer_length = ISO_FRAME_DESC_PER_URB * len; + aurb[i].urb.buffer = g_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 (pid == USB_TOKEN_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, pid, ep, aurb); + + return aurb; +} + +static void usb_host_stop_n_free_iso(USBHostDevice *s, int pid, uint8_t ep) +{ + AsyncURB *aurb; + int i, ret, killed = 0, free = 1; + + aurb = get_iso_urb(s, pid, ep); + if (!aurb) { + return; + } + + for (i = 0; i < s->iso_urb_count; i++) { + /* in flight? */ + if (aurb[i].iso_frame_idx == -1) { + ret = ioctl(s->fd, USBDEVFS_DISCARDURB, &aurb[i]); + if (ret < 0) { + perror("USBDEVFS_DISCARDURB"); + 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 < s->iso_urb_count; i++) { + g_free(aurb[i].urb.buffer); + } + + if (free) + g_free(aurb); + else + printf("husb: leaking iso urbs because of discard failure\n"); + set_iso_urb(s, pid, ep, NULL); + set_iso_urb_idx(s, pid, ep, 0); + clear_iso_started(s, pid, ep); +} + +static int urb_status_to_usb_ret(int status) +{ + switch (status) { + case -EPIPE: + return USB_RET_STALL; + case -EOVERFLOW: + return USB_RET_BABBLE; + default: + return USB_RET_IOERROR; + } +} + +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; + uint8_t *buf; + + max_packet_size = p->ep->max_packet_size; + if (max_packet_size == 0) + return USB_RET_NAK; + + aurb = get_iso_urb(s, p->pid, p->ep->nr); + if (!aurb) { + aurb = usb_host_alloc_iso(s, p->pid, p->ep->nr); + } + + i = get_iso_urb_idx(s, p->pid, p->ep->nr); + 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->iov.size) { + printf("husb: received iso data is larger then packet\n"); + len = USB_RET_BABBLE; + /* All good copy data over */ + } else { + len = aurb[i].urb.iso_frame_desc[j].actual_length; + buf = aurb[i].urb.buffer + + j * aurb[i].urb.iso_frame_desc[0].length; + usb_packet_copy(p, buf, len); + } + } else { + len = p->iov.size; + offset = (j == 0) ? 0 : get_iso_buffer_used(s, p->pid, p->ep->nr); + + /* 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 */ + usb_packet_copy(p, aurb[i].urb.buffer + offset, len); + aurb[i].urb.iso_frame_desc[j].length = len; + offset += len; + set_iso_buffer_used(s, p->pid, p->ep->nr, offset); + + /* Start the stream once we have buffered enough data */ + if (!is_iso_started(s, p->pid, p->ep->nr) && i == 1 && j == 8) { + set_iso_started(s, p->pid, p->ep->nr); + } + } + aurb[i].iso_frame_idx++; + if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) { + i = (i + 1) % s->iso_urb_count; + set_iso_urb_idx(s, p->pid, p->ep->nr, i); + } + } else { + if (in) { + set_iso_started(s, p->pid, p->ep->nr); + } else { + DPRINTF("hubs: iso out error no free buffer, dropping packet\n"); + } + } + + if (is_iso_started(s, p->pid, p->ep->nr)) { + /* (Re)-submit all fully consumed / filled urbs */ + for (i = 0; i < s->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) { + perror("USBDEVFS_SUBMITURB"); + if (!in || len == 0) { + switch(errno) { + case ETIMEDOUT: + len = USB_RET_NAK; + break; + case EPIPE: + default: + len = USB_RET_STALL; + } + } + break; + } + aurb[i].iso_frame_idx = -1; + change_iso_inflight(s, p->pid, p->ep->nr, 1); + } + } + } + + return len; +} + +static int usb_host_handle_data(USBDevice *dev, USBPacket *p) +{ + USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); + struct usbdevfs_urb *urb; + AsyncURB *aurb; + int ret, rem, prem, v; + uint8_t *pbuf; + uint8_t ep; + + trace_usb_host_req_data(s->bus_num, s->addr, + p->pid == USB_TOKEN_IN, + p->ep->nr, p->iov.size); + + if (!is_valid(s, p->pid, p->ep->nr)) { + trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK); + return USB_RET_NAK; + } + + if (p->pid == USB_TOKEN_IN) { + ep = p->ep->nr | 0x80; + } else { + ep = p->ep->nr; + } + + if (is_halted(s, p->pid, p->ep->nr)) { + unsigned int arg = ep; + ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &arg); + if (ret < 0) { + perror("USBDEVFS_CLEAR_HALT"); + trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK); + return USB_RET_NAK; + } + clear_halt(s, p->pid, p->ep->nr); + } + + if (is_isoc(s, p->pid, p->ep->nr)) { + return usb_host_handle_iso_data(s, p, p->pid == USB_TOKEN_IN); + } + + v = 0; + prem = p->iov.iov[v].iov_len; + pbuf = p->iov.iov[v].iov_base; + rem = p->iov.size; + while (rem) { + if (prem == 0) { + v++; + assert(v < p->iov.niov); + prem = p->iov.iov[v].iov_len; + pbuf = p->iov.iov[v].iov_base; + assert(prem <= rem); + } + aurb = async_alloc(s); + aurb->packet = p; + + urb = &aurb->urb; + urb->endpoint = ep; + urb->type = usb_host_usbfs_type(s, p); + urb->usercontext = s; + urb->buffer = pbuf; + urb->buffer_length = prem; + + if (urb->buffer_length > MAX_USBFS_BUFFER_SIZE) { + urb->buffer_length = MAX_USBFS_BUFFER_SIZE; + } + pbuf += urb->buffer_length; + prem -= urb->buffer_length; + rem -= urb->buffer_length; + if (rem) { + aurb->more = 1; + } + + trace_usb_host_urb_submit(s->bus_num, s->addr, aurb, + urb->buffer_length, aurb->more); + ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); + + DPRINTF("husb: data submit: ep 0x%x, len %u, more %d, packet %p, aurb %p\n", + urb->endpoint, urb->buffer_length, aurb->more, p, aurb); + + if (ret < 0) { + perror("USBDEVFS_SUBMITURB"); + async_free(aurb); + + switch(errno) { + case ETIMEDOUT: + trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_NAK); + return USB_RET_NAK; + case EPIPE: + default: + trace_usb_host_req_complete(s->bus_num, s->addr, USB_RET_STALL); + return USB_RET_STALL; + } + } + } + + 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) +{ + trace_usb_host_set_address(s->bus_num, s->addr, addr); + s->dev.addr = addr; + return 0; +} + +static int usb_host_set_config(USBHostDevice *s, int config) +{ + int ret, first = 1; + + trace_usb_host_set_config(s->bus_num, s->addr, config); + + usb_host_release_interfaces(s); + +again: + ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config); + + DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno); + + if (ret < 0 && errno == EBUSY && first) { + /* happens if usb device is in use by host drivers */ + int count = usb_linux_get_num_interfaces(s); + if (count > 0) { + DPRINTF("husb: busy -> disconnecting %d interfaces\n", count); + usb_host_disconnect_ifaces(s, count); + first = 0; + goto again; + } + } + + if (ret < 0) { + return ctrl_error(); + } + usb_host_claim_interfaces(s, config); + usb_linux_update_endp_table(s); + return 0; +} + +static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) +{ + struct usbdevfs_setinterface si; + int i, ret; + + trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); + + for (i = 1; i <= USB_MAX_ENDPOINTS; i++) { + if (is_isoc(s, USB_TOKEN_IN, i)) { + usb_host_stop_n_free_iso(s, USB_TOKEN_IN, i); + } + if (is_isoc(s, USB_TOKEN_OUT, i)) { + usb_host_stop_n_free_iso(s, USB_TOKEN_OUT, i); + } + } + + if (iface >= USB_MAX_INTERFACES) { + return USB_RET_STALL; + } + + 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(); + } + + s->dev.altsetting[iface] = alt; + usb_linux_update_endp_table(s); + return 0; +} + +static int usb_host_handle_control(USBDevice *dev, USBPacket *p, + int request, int value, int index, int length, uint8_t *data) +{ + USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); + struct usbdevfs_urb *urb; + AsyncURB *aurb; + int ret; + + /* + * Process certain standard device requests. + * These are infrequent and are processed synchronously. + */ + + /* Note request is (bRequestType << 8) | bRequest */ + trace_usb_host_req_control(s->bus_num, s->addr, request, value, index); + + switch (request) { + case DeviceOutRequest | USB_REQ_SET_ADDRESS: + return usb_host_set_address(s, value); + + case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: + return usb_host_set_config(s, value & 0xff); + + case InterfaceOutRequest | USB_REQ_SET_INTERFACE: + return usb_host_set_interface(s, index, value); + } + + /* The rest are asynchronous */ + + if (length > sizeof(dev->data_buf)) { + fprintf(stderr, "husb: ctrl buffer too small (%d > %zu)\n", + length, sizeof(dev->data_buf)); + return USB_RET_STALL; + } + + aurb = async_alloc(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->ep->nr; + + urb->buffer = &dev->setup_buf; + urb->buffer_length = length + 8; + + urb->usercontext = s; + + trace_usb_host_urb_submit(s->bus_num, s->addr, aurb, + urb->buffer_length, aurb->more); + 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; + } + } + + return USB_RET_ASYNC; +} + +static uint8_t usb_linux_get_alt_setting(USBHostDevice *s, + uint8_t configuration, uint8_t interface) +{ + char device_name[64], line[1024]; + int alt_setting; + + sprintf(device_name, "%d-%s:%d.%d", s->bus_num, s->port, + (int)configuration, (int)interface); + + if (!usb_host_read_file(line, sizeof(line), "bAlternateSetting", + device_name)) { + /* Assume alt 0 on error */ + return 0; + } + if (sscanf(line, "%d", &alt_setting) != 1) { + /* 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, alt_interface; + uint16_t raw; + int interface, length, i, ep, pid; + struct endp_data *epd; + + usb_ep_init(&s->dev); + + if (s->dev.configuration == 0) { + /* not configured yet -- leave all endpoints disabled */ + return 0; + } + + /* get the desired configuration, interface, and endpoint descriptors + * from device description */ + descriptors = &s->descr[18]; + length = s->descr_len - 18; + i = 0; + + while (i < length) { + if (descriptors[i + 1] != USB_DT_CONFIG) { + fprintf(stderr, "invalid descriptor data\n"); + return 1; + } else if (descriptors[i + 5] != s->dev.configuration) { + DPRINTF("not requested configuration %d\n", s->dev.configuration); + i += (descriptors[i + 3] << 8) + descriptors[i + 2]; + continue; + } + i += descriptors[i]; + + 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, s->dev.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]; + pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; + ep = devep & 0xf; + if (ep == 0) { + fprintf(stderr, "usb-linux: invalid ep descriptor, ep == 0\n"); + return 1; + } + + type = descriptors[i + 3] & 0x3; + raw = descriptors[i + 4] + (descriptors[i + 5] << 8); + usb_ep_set_max_packet_size(&s->dev, pid, ep, raw); + assert(usb_ep_get_type(&s->dev, pid, ep) == + USB_ENDPOINT_XFER_INVALID); + usb_ep_set_type(&s->dev, pid, ep, type); + usb_ep_set_ifnum(&s->dev, pid, ep, interface); + if (type == USB_ENDPOINT_XFER_BULK) { + usb_ep_set_pipeline(&s->dev, pid, ep, true); + } + + epd = get_endp(s, pid, ep); + epd->halted = 0; + + i += descriptors[i]; + } + } +#ifdef DEBUG + usb_ep_dump(&s->dev); +#endif + return 0; +} + +/* + * Check if we can safely redirect a usb2 device to a usb1 virtual controller, + * this function assumes this is safe, if: + * 1) There are no isoc endpoints + * 2) There are no interrupt endpoints with a max_packet_size > 64 + * Note bulk endpoints with a max_packet_size > 64 in theory also are not + * usb1 compatible, but in practice this seems to work fine. + */ +static int usb_linux_full_speed_compat(USBHostDevice *dev) +{ + int i, packet_size; + + /* + * usb_linux_update_endp_table only registers info about ep in the current + * interface altsettings, so we need to parse the descriptors again. + */ + for (i = 0; (i + 5) < dev->descr_len; i += dev->descr[i]) { + if (dev->descr[i + 1] == USB_DT_ENDPOINT) { + switch (dev->descr[i + 3] & 0x3) { + case 0x00: /* CONTROL */ + break; + case 0x01: /* ISO */ + return 0; + case 0x02: /* BULK */ + break; + case 0x03: /* INTERRUPT */ + packet_size = dev->descr[i + 4] + (dev->descr[i + 5] << 8); + if (packet_size > 64) + return 0; + break; + } + } + } + return 1; +} + +static int usb_host_open(USBHostDevice *dev, int bus_num, + int addr, const char *port, + const char *prod_name, int speed) +{ + int fd = -1, ret; + + trace_usb_host_open_started(bus_num, addr); + + if (dev->fd != -1) { + goto fail; + } + + fd = usb_host_open_device(bus_num, addr); + if (fd < 0) { + goto fail; + } + DPRINTF("husb: opened %s\n", buf); + + dev->bus_num = bus_num; + dev->addr = addr; + strcpy(dev->port, port); + 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 + + + /* start unconfigured -- we'll wait for the guest to set a configuration */ + if (!usb_host_claim_interfaces(dev, 0)) { + goto fail; + } + + ret = usb_linux_update_endp_table(dev); + if (ret) { + goto fail; + } + + if (speed == -1) { + struct usbdevfs_connectinfo ci; + + ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); + if (ret < 0) { + perror("usb_host_device_open: USBDEVFS_CONNECTINFO"); + goto fail; + } + + if (ci.slow) { + speed = USB_SPEED_LOW; + } else { + speed = USB_SPEED_HIGH; + } + } + dev->dev.speed = speed; + dev->dev.speedmask = (1 << speed); + if (dev->dev.speed == USB_SPEED_HIGH && usb_linux_full_speed_compat(dev)) { + dev->dev.speedmask |= USB_SPEED_MASK_FULL; + } + + trace_usb_host_open_success(bus_num, addr); + + 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); + } + + ret = usb_device_attach(&dev->dev); + if (ret) { + goto fail; + } + + /* USB devio uses 'write' flag to check for async completions */ + qemu_set_fd_handler(dev->fd, NULL, async_complete, dev); + + return 0; + +fail: + trace_usb_host_open_failure(bus_num, addr); + if (dev->fd != -1) { + close(dev->fd); + dev->fd = -1; + } + return -1; +} + +static int usb_host_close(USBHostDevice *dev) +{ + int i; + + if (dev->fd == -1) { + return -1; + } + + trace_usb_host_close(dev->bus_num, dev->addr); + + qemu_set_fd_handler(dev->fd, NULL, NULL, NULL); + dev->closing = 1; + for (i = 1; i <= USB_MAX_ENDPOINTS; i++) { + if (is_isoc(dev, USB_TOKEN_IN, i)) { + usb_host_stop_n_free_iso(dev, USB_TOKEN_IN, i); + } + if (is_isoc(dev, USB_TOKEN_OUT, i)) { + usb_host_stop_n_free_iso(dev, USB_TOKEN_OUT, i); + } + } + async_complete(dev); + dev->closing = 0; + if (dev->dev.attached) { + usb_device_detach(&dev->dev); + } + usb_host_do_reset(dev); + close(dev->fd); + dev->fd = -1; + return 0; +} + +static void usb_host_exit_notifier(struct Notifier *n, void *data) +{ + USBHostDevice *s = container_of(n, USBHostDevice, exit); + + usb_host_release_port(s); + if (s->fd != -1) { + usb_host_do_reset(s);; + } +} + +static int usb_host_initfn(USBDevice *dev) +{ + USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev); + + dev->auto_attach = 0; + s->fd = -1; + s->hub_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); + + if (s->match.bus_num != 0 && s->match.port != NULL) { + usb_host_claim_port(s); + } + return 0; +} + +static const VMStateDescription vmstate_usb_host = { + .name = "usb-host", + .unmigratable = 1, +}; + +static Property usb_host_dev_properties[] = { + DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), + DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), + DEFINE_PROP_STRING("hostport", USBHostDevice, match.port), + DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), + DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), + DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), + DEFINE_PROP_END_OF_LIST(), +}; + +static void usb_host_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + USBDeviceClass *uc = USB_DEVICE_CLASS(klass); + + uc->init = usb_host_initfn; + uc->product_desc = "USB Host Device"; + uc->cancel_packet = usb_host_async_cancel; + uc->handle_data = usb_host_handle_data; + uc->handle_control = usb_host_handle_control; + uc->handle_reset = usb_host_handle_reset; + uc->handle_destroy = usb_host_handle_destroy; + dc->vmsd = &vmstate_usb_host; + dc->props = usb_host_dev_properties; +} + +static TypeInfo usb_host_dev_info = { + .name = "usb-host", + .parent = TYPE_USB_DEVICE, + .instance_size = sizeof(USBHostDevice), + .class_init = usb_host_class_initfn, +}; + +static void usb_host_register_types(void) +{ + type_register_static(&usb_host_dev_info); + usb_legacy_register("usb-host", "host", usb_host_device_open); +} + +type_init(usb_host_register_types) + +USBDevice *usb_host_device_open(USBBus *bus, const char *devname) +{ + struct USBAutoFilter filter; + USBDevice *dev; + char *p; + + dev = usb_create(bus, "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; +} + +/* + * 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, "/sys/bus/usb/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(void *opaque, USBScanFunc *func) +{ + DIR *dir = NULL; + char line[1024]; + int bus_num, addr, speed, class_id, product_id, vendor_id; + int ret = 0; + char port[MAX_PORTLEN]; + char product_name[512]; + struct dirent *de; + + dir = opendir("/sys/bus/usb/devices"); + if (!dir) { + perror("husb: opendir /sys/bus/usb/devices"); + fprintf(stderr, "husb: please make sure sysfs is mounted at /sys\n"); + goto the_end; + } + + while ((de = readdir(dir))) { + if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { + if (sscanf(de->d_name, "%d-%7[0-9.]", &bus_num, port) < 2) { + continue; + } + + 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, "5000\n")) { + speed = USB_SPEED_SUPER; + } else 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, port, class_id, vendor_id, + product_id, product_name, speed); + if (ret) { + goto the_end; + } + } + } + the_end: + if (dir) { + closedir(dir); + } + return ret; +} + +static QEMUTimer *usb_auto_timer; + +static int usb_host_auto_scan(void *opaque, int bus_num, + int addr, const char *port, + 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->port != NULL && (port == NULL || strcmp(f->port, port) != 0)) { + 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 */ + s->seen++; + if (s->errcount >= 3) { + return 0; + } + + /* Already attached ? */ + if (s->fd != -1) { + return 0; + } + DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr); + + if (usb_host_open(s, bus_num, addr, port, product_name, speed) < 0) { + s->errcount++; + } + break; + } + + 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 (s->seen == 0) { + s->errcount = 0; + } + s->seen = 0; + } + + if (unconnected == 0) { + /* nothing to watch */ + if (usb_auto_timer) { + qemu_del_timer(usb_auto_timer); + trace_usb_host_auto_scan_disabled(); + } + return; + } + + if (!usb_auto_timer) { + usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL); + if (!usb_auto_timer) { + return; + } + trace_usb_host_auto_scan_enabled(); + } + 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, const char *port, + 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; + case USB_SPEED_SUPER: + speed_str = "5000"; + break; + default: + speed_str = "?"; + break; + } + + monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n", + bus_num, addr, port, 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, + const char *path, 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, path, 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, " Bus %s, Addr %s, Port %s, ID %s:%s\n", + bus, addr, f->port ? f->port : "*", vid, pid); + } +} |