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https://github.com/qemu/qemu.git
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usb-host: use qdev for -usbdevice + rework.
Changes: * We don't create/delete devices, we attach/detach them instead. * The separate autofilter list is gone, we simply walk the list of devices directly instead. * Autofiltering is done unconditionally now. Non-auto device scan code got dropped. * Autofiltering turns off the timer if there is nothing to do, it runs only in case there are unattached host devices. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann
Anthony Liguori
parent
b3e461d3d6
commit
26a9e82ac4
410
usb-linux.c
410
usb-linux.c
@ -64,10 +64,8 @@ struct usb_ctrlrequest {
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typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
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int vendor_id, int product_id,
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const char *product_name, int speed);
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static int usb_host_find_device(int *pbus_num, int *paddr,
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char *product_name, int product_name_size,
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const char *devname);
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//#define DEBUG
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#define DEBUG
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#ifdef DEBUG
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#define dprintf printf
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@ -118,6 +116,13 @@ struct ctrl_struct {
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uint8_t buffer[2048];
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};
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struct USBAutoFilter {
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uint32_t bus_num;
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uint32_t addr;
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uint32_t vendor_id;
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uint32_t product_id;
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};
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typedef struct USBHostDevice {
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USBDevice dev;
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int fd;
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@ -134,10 +139,17 @@ typedef struct USBHostDevice {
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/* Host side address */
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int bus_num;
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int addr;
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struct USBAutoFilter match;
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struct USBHostDevice *next;
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QTAILQ_ENTRY(USBHostDevice) next;
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} USBHostDevice;
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static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
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static int usb_host_close(USBHostDevice *dev);
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static int parse_filter(const char *spec, struct USBAutoFilter *f);
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static void usb_host_auto_check(void *unused);
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static int is_isoc(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
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@ -158,41 +170,6 @@ static void set_halt(USBHostDevice *s, int ep)
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s->endp_table[ep - 1].halted = 1;
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}
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static USBHostDevice *hostdev_list;
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static void hostdev_link(USBHostDevice *dev)
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{
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dev->next = hostdev_list;
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hostdev_list = dev;
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}
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static void hostdev_unlink(USBHostDevice *dev)
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{
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USBHostDevice *pdev = hostdev_list;
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USBHostDevice **prev = &hostdev_list;
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while (pdev) {
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if (pdev == dev) {
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*prev = dev->next;
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return;
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}
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prev = &pdev->next;
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pdev = pdev->next;
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}
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}
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static USBHostDevice *hostdev_find(int bus_num, int addr)
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{
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USBHostDevice *s = hostdev_list;
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while (s) {
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if (s->bus_num == bus_num && s->addr == addr)
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return s;
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s = s->next;
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}
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return NULL;
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}
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/*
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* Async URB state.
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* We always allocate one isoc descriptor even for bulk transfers
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@ -252,7 +229,8 @@ static void async_complete(void *opaque)
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if (errno == ENODEV && !s->closing) {
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printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
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usb_device_delete_addr(s->bus_num, s->dev.addr);
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usb_host_close(s);
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usb_host_auto_check(NULL);
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return;
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}
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@ -407,7 +385,7 @@ static int usb_host_release_interfaces(USBHostDevice *s)
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static void usb_host_handle_reset(USBDevice *dev)
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{
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USBHostDevice *s = (USBHostDevice *) dev;
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USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
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dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
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@ -420,18 +398,8 @@ static void usb_host_handle_destroy(USBDevice *dev)
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{
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USBHostDevice *s = (USBHostDevice *)dev;
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s->closing = 1;
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qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
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hostdev_unlink(s);
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async_complete(s);
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if (s->fd >= 0)
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close(s->fd);
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qemu_free(s);
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usb_host_close(s);
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QTAILQ_REMOVE(&hostdevs, s, next);
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}
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static int usb_linux_update_endp_table(USBHostDevice *s);
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@ -891,19 +859,16 @@ static int usb_linux_update_endp_table(USBHostDevice *s)
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return 0;
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}
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static int usb_host_initfn(USBDevice *dev)
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{
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return 0;
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}
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static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name)
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static int usb_host_open(USBHostDevice *dev, int bus_num,
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int addr, const char *prod_name)
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{
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int fd = -1, ret;
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USBDevice *d = NULL;
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USBHostDevice *dev;
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struct usbdevfs_connectinfo ci;
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char buf[1024];
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if (dev->fd != -1)
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goto fail;
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printf("husb: open device %d.%d\n", bus_num, addr);
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if (!usb_host_device_path) {
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@ -919,9 +884,6 @@ static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *p
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}
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dprintf("husb: opened %s\n", buf);
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d = usb_create(NULL /* FIXME */, "USB Host Device");
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dev = DO_UPCAST(USBHostDevice, dev, d);
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dev->bus_num = bus_num;
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dev->addr = addr;
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dev->fd = fd;
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@ -980,32 +942,59 @@ static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *p
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/* USB devio uses 'write' flag to check for async completions */
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qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
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hostdev_link(dev);
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if (qdev_init(&d->qdev) < 0)
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goto fail_no_qdev;
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return (USBDevice *) dev;
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usb_device_attach(&dev->dev);
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return 0;
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fail:
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if (d)
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qdev_free(&d->qdev);
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fail_no_qdev:
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dev->fd = -1;
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if (fd != -1)
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close(fd);
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return NULL;
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return -1;
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}
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static int usb_host_close(USBHostDevice *dev)
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{
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if (dev->fd == -1)
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return -1;
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qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
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dev->closing = 1;
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async_complete(dev);
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dev->closing = 0;
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usb_device_detach(&dev->dev);
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close(dev->fd);
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dev->fd = -1;
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return 0;
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}
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static int usb_host_initfn(USBDevice *dev)
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{
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USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
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dev->auto_attach = 0;
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s->fd = -1;
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QTAILQ_INSERT_TAIL(&hostdevs, s, next);
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usb_host_auto_check(NULL);
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return 0;
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}
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static struct USBDeviceInfo usb_host_dev_info = {
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.qdev.name = "USB Host Device",
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.qdev.alias = "usb-host",
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.qdev.size = sizeof(USBHostDevice),
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.init = usb_host_initfn,
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.handle_packet = usb_host_handle_packet,
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.handle_reset = usb_host_handle_reset,
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#if 0
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.handle_control = usb_host_handle_control,
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.handle_data = usb_host_handle_data,
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#endif
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.handle_destroy = usb_host_handle_destroy,
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.usbdevice_name = "host",
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.usbdevice_init = usb_host_device_open,
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.qdev.props = (Property[]) {
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DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
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DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
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DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
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DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
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DEFINE_PROP_END_OF_LIST(),
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},
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};
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static void usb_host_register_devices(void)
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@ -1014,35 +1003,46 @@ static void usb_host_register_devices(void)
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}
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device_init(usb_host_register_devices)
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static int usb_host_auto_add(const char *spec);
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static int usb_host_auto_del(const char *spec);
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USBDevice *usb_host_device_open(const char *devname)
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{
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Monitor *mon = cur_mon;
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int bus_num, addr;
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char product_name[PRODUCT_NAME_SZ];
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struct USBAutoFilter filter = { 0, 0, 0, 0 };
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USBDevice *dev;
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USBHostDevice *s;
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char *p;
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dev = usb_create(NULL /* FIXME */, "USB Host Device");
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s = DO_UPCAST(USBHostDevice, dev, dev);
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if (strstr(devname, "auto:")) {
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usb_host_auto_add(devname);
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return NULL;
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if (parse_filter(devname+5, &filter) < 0)
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goto fail;
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} else {
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if ((p = strchr(devname, '.'))) {
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filter.bus_num = strtoul(devname, NULL, 0);
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filter.addr = strtoul(devname, NULL, 0);
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} else if ((p = strchr(devname, ':'))) {
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filter.vendor_id = strtoul(devname, NULL, 16);
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filter.product_id = strtoul(devname, NULL, 16);
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} else {
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goto fail;
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}
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}
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if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
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devname) < 0)
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return NULL;
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qdev_prop_set_uint32(&dev->qdev, "bus", filter.bus_num);
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qdev_prop_set_uint32(&dev->qdev, "addr", filter.addr);
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qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
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qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
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qdev_init(&dev->qdev);
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return dev;
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if (hostdev_find(bus_num, addr)) {
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monitor_printf(mon, "husb: host usb device %d.%d is already open\n",
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bus_num, addr);
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return NULL;
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}
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return usb_host_device_open_addr(bus_num, addr, product_name);
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fail:
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qdev_free(&dev->qdev);
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return NULL;
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}
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int usb_host_device_close(const char *devname)
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{
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#if 0
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char product_name[PRODUCT_NAME_SZ];
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int bus_num, addr;
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USBHostDevice *s;
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@ -1059,6 +1059,7 @@ int usb_host_device_close(const char *devname)
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usb_device_delete_addr(s->bus_num, s->dev.addr);
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return 0;
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}
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#endif
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return -1;
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}
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@ -1185,7 +1186,9 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
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*/
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static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
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{
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#if 0
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Monitor *mon = cur_mon;
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#endif
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FILE *f;
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int ret = 0;
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char filename[PATH_MAX];
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@ -1197,8 +1200,10 @@ static int usb_host_read_file(char *line, size_t line_size, const char *device_f
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fgets(line, line_size, f);
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fclose(f);
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ret = 1;
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#if 0
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} else {
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monitor_printf(mon, "husb: could not open %s\n", filename);
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#endif
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}
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return ret;
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@ -1356,58 +1361,72 @@ static int usb_host_scan(void *opaque, USBScanFunc *func)
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return ret;
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}
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struct USBAutoFilter {
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struct USBAutoFilter *next;
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int bus_num;
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int addr;
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int vendor_id;
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int product_id;
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};
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static QEMUTimer *usb_auto_timer;
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static struct USBAutoFilter *usb_auto_filter;
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static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
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int class_id, int vendor_id, int product_id,
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const char *product_name, int speed)
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int class_id, int vendor_id, int product_id,
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const char *product_name, int speed)
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{
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struct USBAutoFilter *f;
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struct USBDevice *dev;
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struct USBHostDevice *s;
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/* Ignore hubs */
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if (class_id == 9)
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return 0;
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for (f = usb_auto_filter; f; f = f->next) {
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if (f->bus_num >= 0 && f->bus_num != bus_num)
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QTAILQ_FOREACH(s, &hostdevs, next) {
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f = &s->match;
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if (f->bus_num > 0 && f->bus_num != bus_num)
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continue;
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if (f->addr >= 0 && f->addr != addr)
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if (f->addr > 0 && f->addr != addr)
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continue;
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if (f->vendor_id >= 0 && f->vendor_id != vendor_id)
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if (f->vendor_id > 0 && f->vendor_id != vendor_id)
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continue;
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if (f->product_id >= 0 && f->product_id != product_id)
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if (f->product_id > 0 && f->product_id != product_id)
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continue;
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/* We got a match */
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|
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/* Already attached ? */
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if (hostdev_find(bus_num, addr))
|
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if (s->fd != -1)
|
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return 0;
|
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|
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dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
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dev = usb_host_device_open_addr(bus_num, addr, product_name);
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usb_host_open(s, bus_num, addr, product_name);
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}
|
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return 0;
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}
|
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|
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static void usb_host_auto_timer(void *unused)
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static void usb_host_auto_check(void *unused)
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{
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struct USBHostDevice *s;
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int unconnected = 0;
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usb_host_scan(NULL, usb_host_auto_scan);
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QTAILQ_FOREACH(s, &hostdevs, next) {
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if (s->fd == -1)
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unconnected++;
|
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}
|
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|
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if (unconnected == 0) {
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/* nothing to watch */
|
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if (usb_auto_timer)
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qemu_del_timer(usb_auto_timer);
|
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return;
|
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}
|
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|
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if (!usb_auto_timer) {
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usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
|
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if (!usb_auto_timer)
|
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return;
|
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}
|
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qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
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}
|
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|
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@ -1459,150 +1478,6 @@ static int parse_filter(const char *spec, struct USBAutoFilter *f)
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return 0;
|
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}
|
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|
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static int match_filter(const struct USBAutoFilter *f1,
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const struct USBAutoFilter *f2)
|
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{
|
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return f1->bus_num == f2->bus_num &&
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f1->addr == f2->addr &&
|
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f1->vendor_id == f2->vendor_id &&
|
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f1->product_id == f2->product_id;
|
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}
|
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|
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static int usb_host_auto_add(const char *spec)
|
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{
|
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struct USBAutoFilter filter, *f;
|
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|
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if (parse_filter(spec, &filter) < 0)
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return -1;
|
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|
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f = qemu_mallocz(sizeof(*f));
|
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|
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*f = filter;
|
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|
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if (!usb_auto_filter) {
|
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/*
|
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* First entry. Init and start the monitor.
|
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* Right now we're using timer to check for new devices.
|
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* If this turns out to be too expensive we can move that into a
|
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* separate thread.
|
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*/
|
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usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
|
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if (!usb_auto_timer) {
|
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fprintf(stderr, "husb: failed to allocate auto scan timer\n");
|
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qemu_free(f);
|
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return -1;
|
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}
|
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|
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/* Check for new devices every two seconds */
|
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qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
|
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}
|
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|
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dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
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f->bus_num, f->addr, f->vendor_id, f->product_id);
|
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|
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f->next = usb_auto_filter;
|
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usb_auto_filter = f;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usb_host_auto_del(const char *spec)
|
||||
{
|
||||
struct USBAutoFilter *pf = usb_auto_filter;
|
||||
struct USBAutoFilter **prev = &usb_auto_filter;
|
||||
struct USBAutoFilter filter;
|
||||
|
||||
if (parse_filter(spec, &filter) < 0)
|
||||
return -1;
|
||||
|
||||
while (pf) {
|
||||
if (match_filter(pf, &filter)) {
|
||||
dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
|
||||
pf->bus_num, pf->addr, pf->vendor_id, pf->product_id);
|
||||
|
||||
*prev = pf->next;
|
||||
|
||||
if (!usb_auto_filter) {
|
||||
/* No more filters. Stop scanning. */
|
||||
qemu_del_timer(usb_auto_timer);
|
||||
qemu_free_timer(usb_auto_timer);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
prev = &pf->next;
|
||||
pf = pf->next;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
typedef struct FindDeviceState {
|
||||
int vendor_id;
|
||||
int product_id;
|
||||
int bus_num;
|
||||
int addr;
|
||||
char product_name[PRODUCT_NAME_SZ];
|
||||
} FindDeviceState;
|
||||
|
||||
static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
|
||||
int class_id,
|
||||
int vendor_id, int product_id,
|
||||
const char *product_name, int speed)
|
||||
{
|
||||
FindDeviceState *s = opaque;
|
||||
if ((vendor_id == s->vendor_id &&
|
||||
product_id == s->product_id) ||
|
||||
(bus_num == s->bus_num &&
|
||||
addr == s->addr)) {
|
||||
pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
|
||||
s->bus_num = bus_num;
|
||||
s->addr = addr;
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* the syntax is :
|
||||
'bus.addr' (decimal numbers) or
|
||||
'vendor_id:product_id' (hexa numbers) */
|
||||
static int usb_host_find_device(int *pbus_num, int *paddr,
|
||||
char *product_name, int product_name_size,
|
||||
const char *devname)
|
||||
{
|
||||
const char *p;
|
||||
int ret;
|
||||
FindDeviceState fs;
|
||||
|
||||
p = strchr(devname, '.');
|
||||
if (p) {
|
||||
*pbus_num = strtoul(devname, NULL, 0);
|
||||
*paddr = strtoul(p + 1, NULL, 0);
|
||||
fs.bus_num = *pbus_num;
|
||||
fs.addr = *paddr;
|
||||
ret = usb_host_scan(&fs, usb_host_find_device_scan);
|
||||
if (ret)
|
||||
pstrcpy(product_name, product_name_size, fs.product_name);
|
||||
return 0;
|
||||
}
|
||||
|
||||
p = strchr(devname, ':');
|
||||
if (p) {
|
||||
fs.vendor_id = strtoul(devname, NULL, 16);
|
||||
fs.product_id = strtoul(p + 1, NULL, 16);
|
||||
ret = usb_host_scan(&fs, usb_host_find_device_scan);
|
||||
if (ret) {
|
||||
*pbus_num = fs.bus_num;
|
||||
*paddr = fs.addr;
|
||||
pstrcpy(product_name, product_name_size, fs.product_name);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**********************/
|
||||
/* USB host device info */
|
||||
|
||||
@ -1688,7 +1563,7 @@ static int usb_host_info_device(void *opaque, int bus_num, int addr,
|
||||
|
||||
static void dec2str(int val, char *str, size_t size)
|
||||
{
|
||||
if (val == -1)
|
||||
if (val == 0)
|
||||
snprintf(str, size, "*");
|
||||
else
|
||||
snprintf(str, size, "%d", val);
|
||||
@ -1696,22 +1571,25 @@ static void dec2str(int val, char *str, size_t size)
|
||||
|
||||
static void hex2str(int val, char *str, size_t size)
|
||||
{
|
||||
if (val == -1)
|
||||
if (val == 0)
|
||||
snprintf(str, size, "*");
|
||||
else
|
||||
snprintf(str, size, "%x", val);
|
||||
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 (usb_auto_filter)
|
||||
monitor_printf(mon, " Auto filters:\n");
|
||||
for (f = usb_auto_filter; f; f = f->next) {
|
||||
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));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user