*
* 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
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include "vl.h"
-#if defined(__linux__)
+#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 <signal.h>
+#include "hw/usb.h"
/* We redefine it to avoid version problems */
struct usb_ctrltransfer {
void *data;
};
-typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
- int vendor_id, int product_id,
+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);
-static int usb_host_find_device(int *pbus_num, int *paddr,
- char *product_name, int product_name_size,
- const char *devname);
//#define DEBUG
-//#define DEBUG_ISOCH
-//#define USE_ASYNCIO
-#define USBDEVFS_PATH "/proc/bus/usb"
+#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 SIG_ISOCOMPLETE (SIGRTMIN+7)
#define MAX_ENDPOINTS 16
+#define USBDEVBUS_PATH "/dev/bus/usb"
+#define USBSYSBUS_PATH "/sys/bus/usb"
+
+static char *usb_host_device_path;
-struct sigaction sigact;
+#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[8192];
+};
+
+struct USBAutoFilter {
+ uint32_t bus_num;
+ uint32_t addr;
+ uint32_t vendor_id;
+ uint32_t product_id;
};
-/* FIXME: move USBPacket to PendingURB */
typedef struct USBHostDevice {
USBDevice dev;
- int fd;
- USBPacket *packet;
+ 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];
- int configuration;
- uint8_t descr[1024];
- int descr_len;
- int urbs_ready;
+
+ /* Host side address */
+ int bus_num;
+ int addr;
+ int devpath;
+ struct USBAutoFilter match;
+
+ QTAILQ_ENTRY(USBHostDevice) next;
} USBHostDevice;
-typedef struct PendingURB {
- struct usbdevfs_urb *urb;
- USBHostDevice *dev;
- QEMUBH *bh;
- int status;
- struct PendingURB *next;
-} PendingURB;
-
-PendingURB *pending_urbs = NULL;
-
-int add_pending_urb(struct usbdevfs_urb *urb)
-{
- PendingURB *purb = qemu_mallocz(sizeof(PendingURB));
- if (purb) {
- purb->urb = urb;
- purb->dev = NULL;
- purb->bh = NULL;
- purb->status = 0;
- purb->next = pending_urbs;
- pending_urbs = purb;
- return 1;
- }
- return 0;
+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_halted(USBHostDevice *s, int ep)
+{
+ return s->endp_table[ep - 1].halted;
}
-int del_pending_urb(struct usbdevfs_urb *urb)
+static void clear_halt(USBHostDevice *s, int ep)
{
- PendingURB *purb = pending_urbs;
- PendingURB *prev = NULL;
+ s->endp_table[ep - 1].halted = 0;
+}
- while (purb && purb->urb != urb) {
- prev = purb;
- purb = purb->next;
+static void set_halt(USBHostDevice *s, int ep)
+{
+ s->endp_table[ep - 1].halted = 1;
+}
+
+/*
+ * 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;
}
+}
- if (purb && purb->urb == urb) {
- if (prev) {
- prev->next = purb->next;
- } else {
- pending_urbs = purb->next;
+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;
}
- qemu_free(purb);
- return 1;
+
+ 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);
+ p->len = USB_RET_STALL;
+ break;
+
+ default:
+ p->len = USB_RET_NAK;
+ break;
+ }
+
+ usb_packet_complete(p);
+ }
+
+ async_free(aurb);
}
- return 0;
}
-PendingURB *get_pending_urb(struct usbdevfs_urb *urb)
+static void async_cancel(USBPacket *unused, void *opaque)
{
- PendingURB *purb = pending_urbs;
+ AsyncURB *aurb = opaque;
+ USBHostDevice *s = aurb->hdev;
- while (purb && purb->urb != urb) {
- purb = purb->next;
- }
+ DPRINTF("husb: async cancel. aurb %p\n", aurb);
+
+ /* Mark it as dead (see async_complete above) */
+ aurb->packet = NULL;
- if (purb && purb->urb == urb) {
- return purb;
+ int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
+ if (r < 0) {
+ DPRINTF("husb: async. discard urb failed errno %d\n", errno);
}
- return NULL;
}
-static int usb_host_update_interfaces(USBHostDevice *dev, int configuration)
+static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
{
int dev_descr_len, config_descr_len;
- int interface, nb_interfaces, nb_configurations;
+ 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)
+ if (dev_descr_len > dev->descr_len) {
goto fail;
- nb_configurations = dev->descr[17];
+ }
i += dev_descr_len;
while (i < dev->descr_len) {
-#ifdef DEBUG
- printf("i is %d, descr_len is %d, dl %d, dt %d\n", 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]);
-#endif
+
if (dev->descr[i+1] != USB_DT_CONFIG) {
i += dev->descr[i];
continue;
}
config_descr_len = dev->descr[i];
- if (configuration == dev->descr[i + 5])
+ 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) {
- printf("usb_host: error - device has no matching configuration\n");
+ fprintf(stderr,
+ "husb: update iface failed. no matching configuration\n");
goto fail;
}
nb_interfaces = dev->descr[i + 4];
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
if (ret < 0) {
if (errno == EBUSY) {
- fprintf(stderr,
- "usb_host: warning - device already grabbed\n");
+ printf("husb: update iface. device already grabbed\n");
} else {
- perror("USBDEVFS_CLAIMINTERFACE");
+ perror("husb: failed to claim interface");
}
fail:
return 0;
}
}
-#ifdef DEBUG
- printf("usb_host: %d interfaces claimed for configuration %d\n",
+ printf("husb: %d interfaces claimed for configuration %d\n",
nb_interfaces, configuration);
-#endif
+
+ 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)
{
-#if 0
- USBHostDevice *s = (USBHostDevice *)dev;
- /* USBDEVFS_RESET, but not the first time as it has already be
- done by the host OS */
+ USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
+
+ DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr);
+
ioctl(s->fd, USBDEVFS_RESET);
-#endif
+
+ usb_host_claim_interfaces(s, s->configuration);
}
static void usb_host_handle_destroy(USBDevice *dev)
{
USBHostDevice *s = (USBHostDevice *)dev;
- if (s->fd >= 0)
- close(s->fd);
- qemu_free(s);
+ usb_host_close(s);
+ QTAILQ_REMOVE(&hostdevs, s, next);
+ qemu_remove_exit_notifier(&s->exit);
}
static int usb_linux_update_endp_table(USBHostDevice *s);
-static int usb_host_handle_control(USBDevice *dev,
- int request,
- int value,
- int index,
- int length,
- uint8_t *data)
+static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
{
- USBHostDevice *s = (USBHostDevice *)dev;
- struct usb_ctrltransfer ct;
- struct usbdevfs_setinterface si;
- int intf_update_required = 0;
+ struct usbdevfs_urb *urb;
+ AsyncURB *aurb;
int ret;
- if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
- /* specific SET_ADDRESS support */
- dev->addr = value;
- return 0;
- } else if (request == ((USB_RECIP_INTERFACE << 8) |
- USB_REQ_SET_INTERFACE)) {
- /* set alternate setting for the interface */
- si.interface = index;
- si.altsetting = value;
- ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
- usb_linux_update_endp_table(s);
- } else if (request == (DeviceOutRequest | USB_REQ_SET_CONFIGURATION)) {
-#ifdef DEBUG
- printf("usb_host_handle_control: SET_CONFIGURATION request - "
- "config %d\n", value & 0xff);
-#endif
- if (s->configuration != (value & 0xff)) {
- s->configuration = (value & 0xff);
- intf_update_required = 1;
- }
- goto do_request;
+ aurb = async_alloc();
+ aurb->hdev = s;
+ aurb->packet = p;
+
+ urb = &aurb->urb;
+
+ if (p->pid == USB_TOKEN_IN) {
+ urb->endpoint = p->devep | 0x80;
} else {
- do_request:
- ct.bRequestType = request >> 8;
- ct.bRequest = request;
- ct.wValue = value;
- ct.wIndex = index;
- ct.wLength = length;
- ct.timeout = 50;
- ct.data = data;
- ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
+ urb->endpoint = p->devep;
}
- if (ret < 0) {
- switch(errno) {
- case ETIMEDOUT:
+ 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;
- default:
- return USB_RET_STALL;
}
+ 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 {
- if (intf_update_required) {
-#ifdef DEBUG
- printf("usb_host_handle_control: updating interfaces\n");
-#endif
- usb_host_update_interfaces(s, value & 0xff);
- }
- return ret;
+ /* Setup bulk transfer */
+ urb->type = USBDEVFS_URB_TYPE_BULK;
}
-}
-static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p);
+ urb->usercontext = s;
-static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
-{
- USBHostDevice *s = (USBHostDevice *)dev;
- struct usbdevfs_bulktransfer bt;
- int ret;
- uint8_t devep = p->devep;
+ ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
- if (s->endp_table[p->devep - 1].type == USBDEVFS_URB_TYPE_ISO) {
- return usb_host_handle_isoch(dev, p);
- }
+ DPRINTF("husb: data submit. ep 0x%x len %u aurb %p\n",
+ urb->endpoint, p->len, aurb);
- /* XXX: optimize and handle all data types by looking at the
- config descriptor */
- if (p->pid == USB_TOKEN_IN)
- devep |= 0x80;
- bt.ep = devep;
- bt.len = p->len;
- bt.timeout = 50;
- bt.data = p->data;
- ret = ioctl(s->fd, USBDEVFS_BULK, &bt);
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:
-#ifdef DEBUG
- printf("handle_data: errno=%d\n", errno);
-#endif
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 ret;
+ return USB_RET_STALL;
}
}
-static void usb_linux_bh_cb(void *opaque);
+static int usb_host_set_address(USBHostDevice *s, int addr)
+{
+ DPRINTF("husb: ctrl set addr %u\n", addr);
+ s->dev.addr = addr;
+ return 0;
+}
-void isoch_done(int signum, siginfo_t *info, void *context) {
- struct usbdevfs_urb *urb = (struct usbdevfs_urb *)info->si_addr;
- USBHostDevice *s = (USBHostDevice *)urb->usercontext;
- PendingURB *purb;
+static int usb_host_set_config(USBHostDevice *s, int config)
+{
+ usb_host_release_interfaces(s);
- if (info->si_code != SI_ASYNCIO ||
- info->si_signo != SIG_ISOCOMPLETE) {
- return;
- }
+ int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
- purb = get_pending_urb(urb);
- if (purb) {
- purb->bh = qemu_bh_new(usb_linux_bh_cb, purb);
- if (purb->bh) {
- purb->dev = s;
- purb->status = info->si_errno;
- qemu_bh_schedule(purb->bh);
- }
+ 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_handle_isoch(USBDevice *dev, USBPacket *p)
+static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
{
- USBHostDevice *s = (USBHostDevice *)dev;
- struct usbdevfs_urb *urb, *purb = NULL;
+ struct usbdevfs_setinterface si;
int ret;
- uint8_t devep = p->devep;
- if (p->pid == USB_TOKEN_IN)
- devep |= 0x80;
+ si.interface = iface;
+ si.altsetting = alt;
+ ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
- urb = qemu_mallocz(sizeof(struct usbdevfs_urb) +
- sizeof(struct usbdevfs_iso_packet_desc));
- if (!urb) {
- printf("usb_host_handle_isoch: malloc failed\n");
- return 0;
+ 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 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 = buffer_len;
- urb->type = USBDEVFS_URB_TYPE_ISO;
- urb->endpoint = devep;
- urb->status = 0;
- urb->flags = USBDEVFS_URB_ISO_ASAP;
- urb->buffer = p->data;
- urb->buffer_length = p->len;
- urb->actual_length = 0;
- urb->start_frame = 0;
- urb->error_count = 0;
-#ifdef USE_ASYNCIO
- urb->signr = SIG_ISOCOMPLETE;
-#else
- urb->signr = 0;
-#endif
urb->usercontext = s;
- urb->number_of_packets = 1;
- urb->iso_frame_desc[0].length = p->len;
- urb->iso_frame_desc[0].actual_length = 0;
- urb->iso_frame_desc[0].status = 0;
+
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
- if (ret == 0) {
- if (!add_pending_urb(urb)) {
- printf("usb_host_handle_isoch: add_pending_urb failed %p\n", urb);
- }
- } else {
- printf("usb_host_handle_isoch: SUBMITURB ioctl=%d errno=%d\n",
- ret, errno);
- qemu_free(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;
return USB_RET_STALL;
}
}
-#ifdef USE_ASYNCIO
- /* FIXME: handle urbs_ready together with sync io
- * workaround for injecting the signaled urbs into current frame */
- if (s->urbs_ready > 0) {
- ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
- if (ret == 0) {
- ret = purb->actual_length;
- qemu_free(purb);
- s->urbs_ready--;
- }
- return ret;
- }
- s->packet = p;
+
+ usb_defer_packet(p, async_cancel, aurb);
return USB_RET_ASYNC;
-#else
- ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
- if (ret == 0) {
- if (del_pending_urb(purb)) {
- ret = purb->actual_length;
- qemu_free(purb);
- } else {
- printf("usb_host_handle_isoch: del_pending_urb failed %p\n", purb);
+}
+
+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 {
-#ifdef DEBUG_ISOCH
- printf("usb_host_handle_isoch: REAPURBNDELAY ioctl=%d errno=%d\n",
- ret, errno);
-#endif
+ if (s->ctrl.len == 0) {
+ s->ctrl.state = CTRL_STATE_ACK;
+ } else {
+ s->ctrl.state = CTRL_STATE_DATA;
+ }
}
+
return ret;
-#endif
}
-static void usb_linux_bh_cb(void *opaque)
+static int do_token_in(USBDevice *dev, USBPacket *p)
{
- PendingURB *pending_urb = (PendingURB *)opaque;
- USBHostDevice *s = pending_urb->dev;
- struct usbdevfs_urb *purb = NULL;
- USBPacket *p = s->packet;
- int ret;
+ USBHostDevice *s = (USBHostDevice *) dev;
+ int ret = 0;
- /* FIXME: handle purb->status */
- qemu_free(pending_urb->bh);
- del_pending_urb(pending_urb->urb);
+ if (p->devep != 0) {
+ return usb_host_handle_data(s, p);
+ }
- if (!p) {
- s->urbs_ready++;
- return;
+ 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;
}
+}
- ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb);
- if (ret < 0) {
- printf("usb_linux_bh_cb: REAPURBNDELAY ioctl=%d errno=%d\n",
- ret, errno);
- return;
+static int do_token_out(USBDevice *dev, USBPacket *p)
+{
+ USBHostDevice *s = (USBHostDevice *) dev;
+
+ if (p->devep != 0) {
+ return usb_host_handle_data(s, p);
}
-#ifdef DEBUG_ISOCH
- if (purb == pending_urb->urb) {
- printf("usb_linux_bh_cb: urb mismatch reaped=%p pending=%p\n",
- purb, urb);
+ 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;
}
-#endif
+}
+
+/*
+ * 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;
- p->len = purb->actual_length;
- usb_packet_complete(p);
- qemu_free(purb);
- s->packet = NULL;
+ 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;
+ }
}
-/* returns 1 on problem encountered or 0 for success */
-static int usb_linux_update_endp_table(USBHostDevice *s)
+static int usb_linux_get_configuration(USBHostDevice *s)
{
- uint8_t *descriptors;
- uint8_t devep, type, configuration, alt_interface;
+ uint8_t configuration;
struct usb_ctrltransfer ct;
- int interface, ret, length, i;
+ 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;
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
- perror("usb_linux_update_endp_table");
- return 1;
+ perror("usb_linux_get_configuration");
+ return -1;
}
/* in address state */
- if (configuration == 0)
+ if (configuration == 0) {
+ return -1;
+ }
+
+ return configuration;
+}
+
+/* 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 usb_ctrltransfer ct;
+ int interface, ret, length, i;
+
+ i = usb_linux_get_configuration(s);
+ if (i < 0)
return 1;
+ configuration = i;
/* get the desired configuration, interface, and endpoint descriptors
* from device description */
if (descriptors[i + 1] != USB_DT_CONFIG ||
descriptors[i + 5] != configuration) {
- printf("invalid descriptor data - configuration\n");
+ DPRINTF("invalid descriptor data - configuration\n");
return 1;
}
i += descriptors[i];
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
- perror("usb_linux_update_endp_table");
- return 1;
+ alt_interface = interface;
}
/* the current interface descriptor is the active interface
}
/* advance to the endpoints */
- while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
+ 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)
+ if (descriptors[i + 1] != USB_DT_ENDPOINT) {
break;
+ }
devep = descriptors[i + 2];
switch (descriptors[i + 3] & 0x3) {
type = USBDEVFS_URB_TYPE_INTERRUPT;
break;
default:
- printf("usb_host: malformed endpoint type\n");
+ 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;
}
-/* XXX: exclude high speed devices or implement EHCI */
-USBDevice *usb_host_device_open(const char *devname)
+static int usb_host_open(USBHostDevice *dev, int bus_num,
+ int addr, int devpath, const char *prod_name)
{
int fd = -1, ret;
- USBHostDevice *dev = NULL;
struct usbdevfs_connectinfo ci;
char buf[1024];
- int bus_num, addr;
- char product_name[PRODUCT_NAME_SZ];
- dev = qemu_mallocz(sizeof(USBHostDevice));
- if (!dev)
+ if (dev->fd != -1) {
goto fail;
+ }
+ printf("husb: open device %d.%d\n", bus_num, addr);
-#ifdef DEBUG_ISOCH
- printf("usb_host_device_open %s\n", devname);
-#endif
- if (usb_host_find_device(&bus_num, &addr,
- product_name, sizeof(product_name),
- devname) < 0)
- return NULL;
-
- snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
+ 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);
- return NULL;
+ 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("usb_host_update_interfaces: reading device data failed");
+ perror("husb: reading device data failed");
goto fail;
}
{
int x;
printf("=== begin dumping device descriptor data ===\n");
- for (x = 0; x < dev->descr_len; x++)
+ 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;
- dev->configuration = 1;
- /* XXX - do something about initial configuration */
- if (!usb_host_update_interfaces(dev, 1))
+ /*
+ * 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("USBDEVFS_CONNECTINFO");
+ perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
goto fail;
}
-#ifdef DEBUG
- printf("host USB device %d.%d grabbed\n", bus_num, addr);
-#endif
+ printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
ret = usb_linux_update_endp_table(dev);
- if (ret)
+ if (ret) {
goto fail;
+ }
- if (ci.slow)
+ if (ci.slow) {
dev->dev.speed = USB_SPEED_LOW;
- else
+ } else {
dev->dev.speed = USB_SPEED_HIGH;
- dev->dev.handle_packet = usb_generic_handle_packet;
-
- dev->dev.handle_reset = usb_host_handle_reset;
- dev->dev.handle_control = usb_host_handle_control;
- dev->dev.handle_data = usb_host_handle_data;
- dev->dev.handle_destroy = usb_host_handle_destroy;
-
- if (product_name[0] == '\0')
- snprintf(dev->dev.devname, sizeof(dev->dev.devname),
- "host:%s", devname);
- else
- pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
- product_name);
-
-#ifdef USE_ASYNCIO
- /* set up the signal handlers */
- sigemptyset(&sigact.sa_mask);
- sigact.sa_sigaction = isoch_done;
- sigact.sa_flags = SA_SIGINFO;
- sigact.sa_restorer = 0;
- ret = sigaction(SIG_ISOCOMPLETE, &sigact, NULL);
- if (ret < 0) {
- printf("sigaction SIG_ISOCOMPLETE=%d errno=%d\n", ret, errno);
}
-#endif
- dev->urbs_ready = 0;
- return (USBDevice *)dev;
+
+ 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)
+{
+ if (dev->fd == -1) {
+ return -1;
+ }
+
+ qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
+ dev->closing = 1;
+ 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:
- if (dev)
- qemu_free(dev);
- close(fd);
+ 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)
+ if (!p) {
return -1;
+ }
p += strlen(tag);
- while (isspace(*p))
+ while (qemu_isspace(*p)) {
p++;
+ }
q = buf;
while (*p != '\0' && !strchr(stopchars, *p)) {
- if ((q - buf) < (buf_size - 1))
+ if ((q - buf) < (buf_size - 1)) {
*q++ = *p;
+ }
p++;
}
*q = '\0';
return q - buf;
}
-static int usb_host_scan(void *opaque, USBScanFunc *func)
+/*
+ * 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;
+ FILE *f = NULL;
char line[1024];
char buf[1024];
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
- int ret;
char product_name[512];
+ int ret = 0;
- f = fopen(USBDEVFS_PATH "/devices", "r");
+ 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) {
- term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
- return 0;
+ perror("husb: cannot open devices file");
+ goto the_end;
}
+
device_count = 0;
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
- ret = 0;
for(;;) {
- if (fgets(line, sizeof(line), f) == NULL)
+ if (fgets(line, sizeof(line), f) == NULL) {
break;
- if (strlen(line) > 0)
+ }
+ 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,
+ ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
product_id, product_name, speed);
- if (ret)
+ if (ret) {
goto the_end;
+ }
}
- if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
+ 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)
+ 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)
+ if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) {
goto fail;
- if (!strcmp(buf, "480"))
+ }
+ if (!strcmp(buf, "480")) {
speed = USB_SPEED_HIGH;
- else if (!strcmp(buf, "1.5"))
+ } else if (!strcmp(buf, "1.5")) {
speed = USB_SPEED_LOW;
- else
+ } 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)
+ 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)
+ 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)
+ 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)
+ 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,
+ ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
product_id, product_name, speed);
}
the_end:
- fclose(f);
+ if (f) {
+ fclose(f);
+ }
return ret;
}
-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;
+/*
+ * 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;
}
-/* 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)
+/*
+ * 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)
{
- 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;
+ 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;
}
- 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);
+
+ 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 -1;
+
+ 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(rt_clock, usb_host_auto_check, NULL);
+ if (!usb_auto_timer) {
+ return;
+ }
+ }
+ 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 = 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;
}
/**********************/
{
const struct usb_class_info *p;
for(p = usb_class_info; p->class != -1; p++) {
- if (p->class == class)
+ if (p->class == class) {
break;
+ }
}
return p->class_name;
}
-void usb_info_device(int bus_num, int addr, int class_id,
- int vendor_id, int product_id,
- const char *product_name,
- int speed)
+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;
break;
}
- term_printf(" Device %d.%d, speed %s Mb/s\n",
+ 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)
- 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");
+ 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 class_id,
+ int devpath, 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,
+ Monitor *mon = opaque;
+
+ usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
product_name, speed);
return 0;
}
-void usb_host_info(void)
+static void dec2str(int val, char *str, size_t size)
{
- usb_host_scan(NULL, usb_host_info_device);
+ if (val == 0) {
+ snprintf(str, size, "*");
+ } else {
+ snprintf(str, size, "%d", val);
+ }
}
-#else
-
-void usb_host_info(void)
+static void hex2str(int val, char *str, size_t size)
{
- term_printf("USB host devices not supported\n");
+ if (val == 0) {
+ snprintf(str, size, "*");
+ } else {
+ snprintf(str, size, "%04x", val);
+ }
}
-/* XXX: modify configure to compile the right host driver */
-USBDevice *usb_host_device_open(const char *devname)
+void usb_host_info(Monitor *mon)
{
- return NULL;
-}
+ struct USBAutoFilter *f;
+ struct USBHostDevice *s;
-#endif
+ 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);
+ }
+}
projects / qemu.git / blobdiff