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usbus: Add functions to query max packet sizes

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This commit is contained in:
Koen Zandberg 2023-03-31 14:28:12 +02:00
parent aa67c98a4a
commit 8b41443913
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GPG Key ID: BA1718B37D79F51C
3 changed files with 80 additions and 0 deletions
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20
sys/include/usb.h
View File

@ -239,6 +239,26 @@ typedef enum {
USB_EP_DIR_IN, /**< Host in, device out */
} usb_ep_dir_t;
/**
* @brief Maximum transfer size for interrupt endpoints at full speed
*/
#define USB_ENDPOINT_INTERRUPT_FS_MAX_SIZE (64)
/**
* @brief Maximum transfer size for interrupt endpoints at high speed
*/
#define USB_ENDPOINT_INTERRUPT_HS_MAX_SIZE (1024)
/**
* @brief Maximum transfer size for bulk endpoints at full speed
*/
#define USB_ENDPOINT_BULK_FS_MAX_SIZE (64)
/**
* @brief Maximum transfer size for bulk endpoints at high speed
*/
#define USB_ENDPOINT_BULK_HS_MAX_SIZE (512)
#ifdef __cplusplus
}
#endif

16
sys/include/usb/usbus.h
View File

@ -589,6 +589,22 @@ void usbus_register_event_handler(usbus_t *usbus, usbus_handler_t *handler);
*/
void usbus_init(usbus_t *usbus, usbdev_t *usbdev);
/**
* @brief Get the maximum supported bulk endpoint transfer size based on the enumeration speed
*
* Should only be called after enumeration has finished by the peripheral. Calling this in response
* to the @ref USBUS_EVENT_USB_RESET is valid
*/
size_t usbus_max_bulk_endpoint_size(usbus_t *usbus);
/**
* @brief Get the maximum supported interrupt endpoint transfer size based on the enumeration speed
*
* Should only be called after enumeration has finished by the peripheral. Calling this in response
* to the @ref USBUS_EVENT_USB_RESET is valid
*/
size_t usbus_max_interrupt_endpoint_size(usbus_t *usbus);
/**
* @brief Create and start the USBUS thread
*

44
sys/usb/usbus/usbus.c
View File

@ -162,6 +162,50 @@ usbus_endpoint_t *usbus_interface_find_endpoint(usbus_interface_t *interface,
return NULL;
}
size_t usbus_max_bulk_endpoint_size(usbus_t *usbus)
{
usb_speed_t speed;
int res = usbdev_get(usbus->dev, USBOPT_ENUMERATED_SPEED, &speed,
sizeof(speed));
if (res == -ENOTSUP) {
res = usbdev_get(usbus->dev, USBOPT_MAX_SPEED, &speed,
sizeof(speed));
}
if (res < 0) {
return 0; /* Misbehaving usbdev device not implementing any speed indication */
}
switch (speed) {
case USB_SPEED_HIGH:
return USB_ENDPOINT_BULK_HS_MAX_SIZE;
default:
return USB_ENDPOINT_BULK_FS_MAX_SIZE;
}
}
size_t usbus_max_interrupt_endpoint_size(usbus_t *usbus)
{
usb_speed_t speed;
int res = usbdev_get(usbus->dev, USBOPT_ENUMERATED_SPEED, &speed,
sizeof(speed));
if (res == -ENOTSUP) {
res = usbdev_get(usbus->dev, USBOPT_MAX_SPEED, &speed,
sizeof(speed));
}
if (res < 0) {
assert(false); /* Misbehaving usbdev device not implementing mandatory USBOPTS */
}
switch (speed) {
case USB_SPEED_HIGH:
return USB_ENDPOINT_INTERRUPT_HS_MAX_SIZE;
default:
return USB_ENDPOINT_INTERRUPT_FS_MAX_SIZE;
}
}
usbus_endpoint_t *usbus_add_endpoint(usbus_t *usbus, usbus_interface_t *iface,
usb_ep_type_t type, usb_ep_dir_t dir,
size_t len)