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genode_c_api/usb_client: API USB clients

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Through this API C-code can connect to an USB service.

issue #4958
This commit is contained in:
Sebastian Sumpf
2023-06-16 21:31:44 +02:00
committed by Christian Helmuth
parent f896fcfadb
commit c5a55e5af4
2 changed files with 481 additions and 0 deletions
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147
repos/os/include/genode_c_api/usb_client.h Normal file
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/*
* \brief C-API Genode USB-client backend
* \author Sebastian Sumpf
* \date 2023-06-29
*/
/*
* Copyright (C) 2023 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef __GENODE_C_API__USB_CLIENT_H_
#define __GENODE_C_API__USB_CLIENT_H_
#include <base/fixed_stdint.h>
#include <genode_c_api/usb.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef unsigned long genode_usb_client_handle_t;
struct genode_range_allocator;
struct genode_usb_device_descriptor
{
genode_uint8_t length;
genode_uint8_t type;
genode_uint16_t usb;
genode_uint8_t dclass;
genode_uint8_t dsubclass;
genode_uint8_t dprotocol;
genode_uint8_t max_packet_size;
genode_uint16_t vendor_id;
genode_uint16_t product_id;
genode_uint16_t device_release;
genode_uint8_t manufactorer_index;
genode_uint8_t product_index;
genode_uint8_t serial_number_index;
genode_uint8_t num_configs;
/*
* Genode extensions (POD only)
*/
unsigned bus;
unsigned num ;
unsigned speed;
} __attribute__((packed));
struct genode_usb_config_descriptor
{
genode_uint8_t length;
genode_uint8_t type;
genode_uint16_t total_length;
genode_uint8_t num_interfaces;
genode_uint8_t config_value;
genode_uint8_t config_index;
genode_uint8_t attributes;
genode_uint8_t max_power;
} __attribute__((packed));
genode_usb_client_handle_t
genode_usb_client_create(struct genode_env *env,
struct genode_allocator *md_alloc,
struct genode_range_allocator *alloc,
char const *label,
struct genode_signal_handler *handler);
void genode_usb_client_destroy(genode_usb_client_handle_t handle,
struct genode_allocator *md_alloc);
void genode_usb_client_sigh_ack_avail(genode_usb_client_handle_t handle,
struct genode_signal_handler *handler);
int genode_usb_client_config_descriptor(genode_usb_client_handle_t handle,
struct genode_usb_device_descriptor *device_descr,
struct genode_usb_config_descriptor *config_descr);
bool genode_usb_client_plugged(genode_usb_client_handle_t handle);
void genode_usb_client_claim_interface(genode_usb_client_handle_t handle,
unsigned interface_num);
void genode_usb_client_release_interface(genode_usb_client_handle_t handle,
unsigned interface_num);
struct genode_usb_altsetting
{
unsigned char interface_number;
unsigned char alt_setting;
};
struct genode_usb_config
{
unsigned char value;
};
struct genode_usb_request_packet
{
unsigned type;
void * req;
};
typedef struct genode_usb_request_packet genode_request_packet_t;
struct genode_usb_client_request_packet
{
genode_request_packet_t request;
struct genode_usb_buffer buffer;
int actual_length;
int error;
void (*complete_callback)(struct genode_usb_client_request_packet *);
void (*free_callback) (struct genode_usb_client_request_packet *);
void *completion;
void *opaque_data;
};
bool genode_usb_client_request(genode_usb_client_handle_t handle,
struct genode_usb_client_request_packet *request);
void genode_usb_client_request_submit(genode_usb_client_handle_t handle,
struct genode_usb_client_request_packet *request);
void genode_usb_client_request_finish(genode_usb_client_handle_t handle,
struct genode_usb_client_request_packet *request);
void genode_usb_client_execute_completions(genode_usb_client_handle_t handle);
#ifdef __cplusplus
} /* extern "C" */
#include <base/allocator.h>
struct genode_range_allocator : Genode::Range_allocator { };
static inline auto genode_range_allocator_ptr(Genode::Range_allocator &alloc)
{
return static_cast<genode_range_allocator *>(&alloc);
}
#endif /* __cplusplus */
#endif /* __GENODE_C_API__USB_CLIENT_H_ */