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added random number generator driver and stuff

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This commit is contained in:
Thomas Klaehn
2016-08-30 17:04:22 +02:00
parent b777ab9e6f
commit d7e6f8b0ee
11 changed files with 233 additions and 6 deletions
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19
source/firmware/kernel/driver/driver.c
View File

@@ -12,7 +12,7 @@
#include "gpio.h"
#include "i2c.h"
#include "pwm.h"
//#include "rtc.h"
#include "rng.h"
#include "spi.h"
#include "uart.h"
@@ -34,8 +34,10 @@ int drv_open(const struct driver *driver)
case DRIVER_TYPE_PWM:
ret = pwm_open((const struct pwm *)(driver->device_driver));
break;
case DRIVER_TYPE_RNG:
ret = rng_open((const struct rng *)(driver->device_driver));
break;
case DRIVER_TYPE_RTC:
// ret = rtc_open((const struct rtc *)(driver->device_driver));
break;
case DRIVER_TYPE_SPI:
ret = spi_open((const struct spi *)(driver->device_driver));
@@ -65,8 +67,10 @@ int drv_close(const struct driver *driver)
case DRIVER_TYPE_PWM:
ret = pwm_close((const struct pwm *)(driver->device_driver));
break;
case DRIVER_TYPE_RNG:
ret = rng_close((const struct rng *)(driver->device_driver));
break;
case DRIVER_TYPE_RTC:
// ret = rtc_close((const struct rtc *)(driver->device_driver));
break;
case DRIVER_TYPE_SPI:
ret = spi_close((const struct spi *)(driver->device_driver));
@@ -96,7 +100,9 @@ int drv_read(const struct driver *driver, char *buffer, int len)
case DRIVER_TYPE_I2C:
break;
case DRIVER_TYPE_PWM:
ret = -1;
break;
case DRIVER_TYPE_RNG:
ret = rng_read((const struct rng *)(driver->device_driver));
break;
case DRIVER_TYPE_RTC:
break;
@@ -129,7 +135,8 @@ int drv_write(const struct driver *driver, const char *buffer, int len)
case DRIVER_TYPE_I2C:
break;
case DRIVER_TYPE_PWM:
ret = -1;
break;
case DRIVER_TYPE_RNG:
break;
case DRIVER_TYPE_RTC:
break;
@@ -166,6 +173,8 @@ int drv_ioctl(const struct driver *driver, unsigned int cmd, const void *data)
return pwm_get_pulse_width_ns((const struct pwm *)(driver->device_driver));
}
break;
case DRIVER_TYPE_RNG:
break;
case DRIVER_TYPE_RTC:
break;
case DRIVER_TYPE_SPI:

30
source/firmware/kernel/driver/include/rng.h Normal file
View File

@@ -0,0 +1,30 @@
/*
* rng.h
*
* Created on: Aug 30, 2016
* Author: tkl
*/
#ifndef SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_RNG_H_
#define SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_RNG_H_
typedef int (*rng_fp_open_t)(const void*);
typedef int (*rng_fp_close_t)(const void*);
typedef unsigned int (*rng_fp_read_t)(const void*);
struct rng_fp {
const rng_fp_open_t open;
const rng_fp_close_t close;
const rng_fp_read_t read;
};
struct rng {
const void *arch_dep_device;
const struct rng_fp *fp;
};
int rng_open(const struct rng *device);
int rng_close(const struct rng *device);
unsigned int rng_read(const struct rng *device);
#endif /* SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_RNG_H_ */

36
source/firmware/kernel/driver/rng.c Normal file
View File

@@ -0,0 +1,36 @@
/*
* rng.c
*
* Created on: Aug 30, 2016
* Author: tkl
*/
#include <stddef.h>
#include "rng.h"
int rng_open(const struct rng *device)
{
if(device == NULL)
return -1;
rng_fp_open_t open = device->fp->open;
return open(device->arch_dep_device);
}
int rng_close(const struct rng *device)
{
if(device == NULL)
return -1;
rng_fp_close_t close = device->fp->close;
return close(device->arch_dep_device);
}
unsigned int rng_read(const struct rng *device)
{
if(device == NULL)
return 0;
rng_fp_read_t read = device->fp->read;
return read(device->arch_dep_device);
}

1
source/firmware/kernel/interface/driver.h
View File

@@ -17,6 +17,7 @@ enum driver_type {
DRIVER_TYPE_GPIO,
DRIVER_TYPE_I2C,
DRIVER_TYPE_PWM,
DRIVER_TYPE_RNG,
DRIVER_TYPE_RTC,
DRIVER_TYPE_SPI,
DRIVER_TYPE_UART