p_prober.h

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// Copyright 2019, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
 * @file
 * @brief  Main prober code.
 * @author Jakob Bornecrantz <jakob@collabora.com>
 * @ingroup st_prober
 */
 
#pragma once
 
#include "xrt/xrt_config_have.h"
#include "xrt/xrt_config_os.h"
#include "xrt/xrt_compiler.h"
#include "xrt/xrt_prober.h"
#include "xrt/xrt_settings.h"
 
#include "util/u_logging.h"
#include "util/u_config_json.h"
 
#ifdef XRT_HAVE_LIBUSB
#include <libusb.h>
#endif
 
#ifdef XRT_HAVE_LIBUVC
#include <libuvc/libuvc.h>
#endif
 
#ifndef __KERNEL__
#include <sys/types.h>
#endif
 
/*
 *
 * Struct and defines
 *
 */
 
#define P_PROBER_BLUETOOTH_PRODUCT_COUNT 64
 
#define P_TRACE(d, ...) U_LOG_IFL_T(d->log_level, __VA_ARGS__)
#define P_DEBUG(d, ...) U_LOG_IFL_D(d->log_level, __VA_ARGS__)
#define P_INFO(d, ...) U_LOG_IFL_I(d->log_level, __VA_ARGS__)
#define P_WARN(d, ...) U_LOG_IFL_W(d->log_level, __VA_ARGS__)
#define P_ERROR(d, ...) U_LOG_IFL_E(d->log_level, __VA_ARGS__)
 
#ifdef XRT_OS_LINUX
/*!
 * A hidraw interface that a @ref prober_device exposes.
 */
struct prober_hidraw
{
        ssize_t interface;
        const char *path;
};
 
/*!
 * A v4l interface that a @ref prober_device exposes.
 */
struct prober_v4l
{
        const char *path;
        int32_t usb_iface;
        uint32_t v4l_index;
};
#endif
 
/*!
 * A single device found by a @ref prober.
 *
 * @implements xrt_prober_device
 */
struct prober_device
{
        struct xrt_prober_device base;
 
        struct
        {
                uint16_t bus;
                uint16_t addr;
 
                const char *product;
                const char *manufacturer;
                const char *serial;
                const char *path;
 
                uint8_t ports[8];
                uint32_t num_ports;
 
#ifdef XRT_HAVE_LIBUSB
                libusb_device *dev;
#endif
        } usb;
 
        struct
        {
                uint64_t id;
 
                char product[P_PROBER_BLUETOOTH_PRODUCT_COUNT];
        } bluetooth;
 
#ifdef XRT_HAVE_LIBUVC
        struct
        {
                uvc_device_t *dev;
        } uvc;
#endif
 
#ifdef XRT_HAVE_V4L2
        size_t num_v4ls;
        struct prober_v4l *v4ls;
#endif
 
#ifdef XRT_OS_LINUX
        size_t num_hidraws;
        struct prober_hidraw *hidraws;
#endif
};
 
/*!
 * @implements xrt_prober
 */
struct prober
{
        struct xrt_prober base;
 
        struct xrt_prober_entry_lists *lists;
 
        struct u_config_json json;
 
        /*!
         * List of created builder.
         */
        struct xrt_builder **builders;
 
        /*!
         * The number of created builders.
         */
        size_t builder_count;
 
        /*!
         * Has the list been locked.
         */
        bool list_locked;
 
#ifdef XRT_HAVE_LIBUSB
        struct
        {
                libusb_context *ctx;
                libusb_device **list;
                ssize_t count;
        } usb;
#endif
 
#ifdef XRT_HAVE_LIBUVC
        struct
        {
                uvc_context_t *ctx;
                uvc_device_t **list;
                ssize_t count;
        } uvc;
#endif
 
 
        struct xrt_auto_prober *auto_probers[XRT_MAX_AUTO_PROBERS];
 
        size_t device_count;
        struct prober_device *devices;
 
        size_t num_entries;
        struct xrt_prober_entry **entries;
 
        // must not be accessed after freeing json
        size_t num_disabled_drivers;
        char **disabled_drivers;
 
        enum u_logging_level log_level;
};
 
 
/*
 *
 * Functions.
 *
 */
 
/*!
 * Dump the given device to stdout.
 *
 * @public @memberof prober
 */
void
p_dump_device(struct prober *p, struct prober_device *pdev, int id, bool use_stdout);
 
/*!
 * Get or create a @ref prober_device from the device.
 *
 * @public @memberof prober
 */
int
p_dev_get_usb_dev(struct prober *p,
                  uint16_t bus,
                  uint16_t addr,
                  uint16_t vendor_id,
                  uint16_t product_id,
                  struct prober_device **out_pdev);
 
/*!
 * Get or create a @ref prober_device from the device.
 *
 * @public @memberof prober
 */
int
p_dev_get_bluetooth_dev(struct prober *p,
                        uint64_t id,
                        uint16_t vendor_id,
                        uint16_t product_id,
                        const char *product_name,
                        struct prober_device **out_pdev);
 
/*!
 * @name Tracking systems
 * @{
 */
/*!
 * Init the tracking factory.
 *
 * @private @memberof prober
 * @see xrt_tracking_factory
 */
int
p_tracking_init(struct prober *p);
 
/*!
 * Teardown the tracking factory.
 *
 * @private @memberof prober
 * @see xrt_tracking_factory
 */
void
p_tracking_teardown(struct prober *p);
 
/*!
 * @}
 */
 
#ifdef XRT_HAVE_LIBUSB
/*!
 * @name libusb
 * @{
 */
/*!
 * @private @memberof prober
 */
int
p_libusb_init(struct prober *p);
 
/*!
 * @private @memberof prober
 */
void
p_libusb_teardown(struct prober *p);
 
/*!
 * @private @memberof prober
 */
int
p_libusb_probe(struct prober *p);
 
/*!
 * @private @memberof prober
 */
int
p_libusb_get_string_descriptor(struct prober *p,
                               struct prober_device *pdev,
                               enum xrt_prober_string which_string,
                               unsigned char *buffer,
                               int length);
 
/*!
 * @private @memberof prober
 */
bool
p_libusb_can_open(struct prober *p, struct prober_device *pdev);
 
/*!
 * @}
 */
#endif
 
#ifdef XRT_HAVE_LIBUVC
/*!
 * @name libuvc
 * @{
 */
/*!
 * @private @memberof prober
 */
int
p_libuvc_init(struct prober *p);
 
/*!
 * @private @memberof prober
 */
void
p_libuvc_teardown(struct prober *p);
 
/*!
 * @private @memberof prober
 */
int
p_libuvc_probe(struct prober *p);
 
/*!
 * @}
 */
#endif
 
#ifdef XRT_HAVE_LIBUDEV
/*!
 * @name udev
 * @{
 */
/*!
 * @private @memberof prober
 */
int
p_udev_probe(struct prober *p);
/*!
 * @}
 */
#endif