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sim/usbdev: Supports registering multiple USB devices on a same host

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when start multiple sim, the host refuses to recognize multiple USB
devices, and the prompt message is as follows:
[365652.175289] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
[365652.175304] misc raw-gadget: fail, usb_gadget_probe_driver returned -16

Signed-off-by: yangsong8 <yangsong8@xiaomi.com>
This commit is contained in:
yangsong8
2025-05-26 21:27:52 +08:00
committed by Xiang Xiao
parent 3a0d2cbd41
commit 8bf88945ce
2 changed files with 33 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/sim/src/sim/posix/sim_rawgadget.c
+31 -9
View File
@@ -89,7 +89,8 @@
#define USB_RAW_RX_BUF_NUM 8
#define USB_RAW_DEVICE "dummy_udc.0"
#define USB_RAW_DEVICE_MAX 32
#define USB_RAW_DEVICE "dummy_udc.%d"
#define USB_RAW_DRIVER "dummy_udc"
#define USB_RAW_FIFO_USED(fifo) ((fifo)->write - (fifo)->read)
@@ -324,7 +325,7 @@ static void host_raw_init(int fd, enum usb_device_speed speed,
static int host_raw_run(int fd)
{
int rv = host_uninterruptible(ioctl, fd, USB_RAW_IOCTL_RUN, 0);
int rv = host_uninterruptible_errno(ioctl, fd, USB_RAW_IOCTL_RUN, 0);
if (rv < 0)
{
ERROR("ioctl(USB_RAW_IOCTL_RUN) fail");
@@ -672,19 +673,40 @@ static void *host_raw_ephandle(void *arg)
int host_usbdev_init(uint32_t speed)
{
struct usb_raw_gadget_dev_t *dev = &g_raw_gadget_dev;
const char *device = USB_RAW_DEVICE;
const char *driver = USB_RAW_DRIVER;
char device[16];
int ret;
int fd;
int i;
fd = host_raw_open();
if (fd < 0)
memset(device, 0, sizeof(device));
for (i = 0; i < USB_RAW_DEVICE_MAX; i++)
{
ERROR("USB raw open error");
return -1;
fd = host_raw_open();
if (fd < 0)
{
ERROR("USB raw open error:%d", fd);
return fd;
}
sprintf(device, USB_RAW_DEVICE, i);
host_raw_init(fd, speed, driver, device);
ret = host_raw_run(fd);
if (ret == 0)
{
break;
}
ERROR("USB raw %d run error:%d", i, ret);
host_raw_close(fd);
}
if (i == USB_RAW_DEVICE_MAX)
{
return ret;
}
host_raw_init(fd, speed, driver, device);
host_raw_run(fd);
host_raw_vbusdraw(fd, 0x32);
host_raw_configure(fd);
dev->fd = fd;
arch/sim/src/sim/sim_usbdev.c
+2 -2
View File
@@ -1094,9 +1094,9 @@ int usbdev_register(struct usbdevclass_driver_s *driver)
/* Setup the USB host controller */
#ifdef CONFIG_USBDEV_DUALSPEED
host_usbdev_init(SIM_USB_SPEED);
ret = host_usbdev_init(SIM_USB_SPEED);
#else
host_usbdev_init(USB_SPEED_FULL);
ret = host_usbdev_init(USB_SPEED_FULL);
#endif
}