source: mainline/uspace/lib/libc/include/ipc/dev_iface.h@ d1fc8f0

/*
 * Copyright (c) 2010 Lenka Trochtova
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef LIBC_IPC_DEV_IFACE_H_
#define LIBC_IPC_DEV_IFACE_H_

#include <ipc/ipc.h>
#include <malloc.h>
#include <unistd.h>
#include <libarch/types.h>

#define DEV_IFACE_FIRST IPC_FIRST_USER_METHOD

typedef enum {  
        HW_RES_DEV_IFACE = DEV_IFACE_FIRST,     
        // TODO add more interfaces
        DEV_IFACE_MAX
} dev_inferface_id_t;


#define DEV_IFACE_COUNT (DEV_IFACE_MAX - DEV_IFACE_FIRST)


// data types related to some interface - TODO move this to separate header files


// HW resource provider interface

typedef enum {
        GET_RESOURCE_LIST = 0,
        ENABLE_INTERRUPT        
} hw_res_funcs_t;

/** HW resource types. */
typedef enum {
        INTERRUPT,
        REGISTER
} hw_res_type_t;

typedef enum {
        LITTLE_ENDIAN = 0,
        BIG_ENDIAN
} endianness_t;

/** HW resource (e.g. interrupt, memory register, i/o register etc.). */
typedef struct hw_resource {
        hw_res_type_t type;
        union {
                struct {
                        uint64_t address;
                        endianness_t endianness;                        
                        size_t size;                    
                } reg;
                struct {
                        int irq;                        
                } intr;         
        } res;  
} hw_resource_t;

typedef struct hw_resource_list {
        size_t count;
        hw_resource_t *resources;       
} hw_resource_list_t;

static inline void clean_hw_resource_list(hw_resource_list_t *hw_res)
{
        if(NULL != hw_res->resources) {
                free(hw_res->resources);
                hw_res->resources = NULL;
        }
        hw_res->count = 0;      
}

#endif