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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2015 by Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __HWSTUB_USB_HPP__
#define __HWSTUB_USB_HPP__
#include "hwstub_usb.hpp"
#include <libusb.h>
namespace hwstub {
namespace usb {
/** USB context
*
* Context based on libusb. */
class context : public hwstub::context
{
protected:
context(libusb_context *ctx, bool cleanup_ctx);
public:
virtual ~context();
/** Return native libusb context */
libusb_context *native_context();
/** Create a USB context. If cleanup_ctx is true, libusb_exit() will be
* called on the context on deletion of this class. If ctx is NULL, libusb_init()
* will be called with NULL so there is no need to init the default context. */
static std::shared_ptr<context> create(libusb_context *ctx, bool cleanup_ctx = false,
std::string *error = nullptr);
protected:
/* NOTE ctx_dev_t = libusb_device* */
libusb_device *from_ctx_dev(ctx_dev_t dev);
ctx_dev_t to_ctx_dev(libusb_device *dev);
virtual error fetch_device_list(std::vector<ctx_dev_t>& list, void*& ptr);
virtual void destroy_device_list(void *ptr);
virtual error create_device(ctx_dev_t dev, std::shared_ptr<hwstub::device>& hwdev);
virtual bool match_device(ctx_dev_t dev, std::shared_ptr<hwstub::device> hwdev);
libusb_context *m_usb_ctx; /* libusb context (might be NULL) */
bool m_cleanup_ctx; /* cleanup context on delete ? */
};
/** USB device
*
* Device based on libusb_device. */
class device : public hwstub::device
{
friend class context; /* for ctor */
protected:
device(std::shared_ptr<hwstub::context> ctx, libusb_device *dev);
public:
virtual ~device();
/** Return native libusb device */
libusb_device *native_device();
/** Get bus number */
uint8_t get_bus_number();
/** Get device address */
uint8_t get_address();
/** Get device VID */
uint16_t get_vid();
/** Get device PID */
uint16_t get_pid();
protected:
/** Return true if this might be a hwstub device and should appear in the list */
static bool is_hwstub_dev(libusb_device *dev);
virtual error open_dev(std::shared_ptr<hwstub::handle>& handle);
virtual bool has_multiple_open() const;
libusb_device *m_dev; /* USB device */
};
/** USB handle
*
* Handle based on libusb_device_handle. */
class handle : public hwstub::handle
{
protected:
handle(std::shared_ptr<hwstub::device> dev, libusb_device_handle *handle);
public:
virtual ~handle();
/** set operation timeout */
void set_timeout(std::chrono::milliseconds ms);
protected:
/* return the maximum size of a libusb control transfer, this is a "known"
* limitation that is completely undocumented (sigh) and applies at least
* to linux and windows hosts */
size_t max_libusb_control_xfer_size() const;
/* interpret libusb error: >=0 means SUCCESS, others are treated as errors,
* LIBUSB_ERROR_NO_DEVICE is treated as DISCONNECTED */
error interpret_libusb_error(int err);
/* interpret libusb error: <0 returns interpret_libusb_error(err), otherwise
* returns SUCCESS if err == expected_value */
error interpret_libusb_error(int err, size_t expected_value);
/* interpret libusb error: <0 returns interpret_libusb_error(err), otherwise
* returns SUCCESS and write size in out_size */
error interpret_libusb_size(int err, size_t& out_size);
libusb_device_handle *m_handle; /* USB handle */
unsigned int m_timeout; /* in milliseconds */
};
/** Rockbox USB handle
*
* HWSTUB/Rockbox protocol. */
class rb_handle : public handle
{
friend class device; /* for find_intf() */
protected:
rb_handle(std::shared_ptr<hwstub::device> dev, libusb_device_handle *handle, int intf);
public:
virtual ~rb_handle();
protected:
virtual error read_dev(uint32_t addr, void *buf, size_t& sz, bool atomic);
virtual error write_dev(uint32_t addr, const void *buf, size_t& sz, bool atomic);
virtual error get_dev_desc(uint16_t desc, void *buf, size_t& buf_sz);
virtual error get_dev_log(void *buf, size_t& buf_sz);
virtual error exec_dev(uint32_t addr, uint16_t flags);
virtual error cop_dev(uint8_t op, uint8_t args[HWSTUB_COP_ARGS], const void *out_data,
size_t out_size, void *in_data, size_t *in_size);
virtual error status() const;
virtual size_t get_buffer_size();
/* Probe a device to check if it is an hwstub device and return the interface
* number, or <0 on error. */
static bool find_intf(struct libusb_device_descriptor *dev,
struct libusb_config_descriptor *config, int& intf);
error m_probe_status; /* probing status */
int m_intf; /* interface number */
uint16_t m_transac_id; /* transaction ID */
size_t m_buf_size; /* Device buffer size */
};
/** JZ USB handle
*
* JZ boot protocol */
class jz_handle : public handle
{
friend class device; /* for is_boot_dev() */
protected:
jz_handle(std::shared_ptr<hwstub::device> dev, libusb_device_handle *handle);
public:
virtual ~jz_handle();
protected:
virtual error read_dev(uint32_t addr, void *buf, size_t& sz, bool atomic);
virtual error write_dev(uint32_t addr, const void *buf, size_t& sz, bool atomic);
virtual error get_dev_desc(uint16_t desc, void *buf, size_t& buf_sz);
virtual error get_dev_log(void *buf, size_t& buf_sz);
virtual error exec_dev(uint32_t addr, uint16_t flags);
virtual error cop_dev(uint8_t op, uint8_t args[HWSTUB_COP_ARGS], const void *out_data,
size_t out_size, void *in_data, size_t *in_size);
virtual error status() const;
virtual size_t get_buffer_size();
error probe();
error probe_jz4760b();
error read_reg32(uint32_t addr, uint32_t& value);
error write_reg32(uint32_t addr, uint32_t value);
error jz_cpuinfo(char cpuinfo[8]);
error jz_set_addr(uint32_t addr);
error jz_set_length(uint32_t size);
error jz_upload(void *data, size_t& length);
error jz_download(const void *data, size_t& length);
error jz_start1(uint32_t addr);
error jz_flush_caches();
error jz_start2(uint32_t addr);
/* Probe a device to check if it is a jz boot device */
static bool is_boot_dev(struct libusb_device_descriptor *dev,
struct libusb_config_descriptor *config);
error m_probe_status; /* probing status */
struct hwstub_version_desc_t m_desc_version;
struct hwstub_layout_desc_t m_desc_layout;
struct hwstub_target_desc_t m_desc_target;
struct hwstub_jz_desc_t m_desc_jz;
};
} // namespace usb
} // namespace hwstub
#endif /* __HWSTUB_USB_HPP__ */
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