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/*
* Copyright (c) 2021 Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ethosu_driver.h"
#include <device.h>
#include <devicetree.h>
#include <init.h>
#include <kernel.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/printk.h>
#include <sys/util.h>
#define DT_DRV_COMPAT arm_ethos_u
/*******************************************************************************
* Re-implementation/Overrides __((weak)) symbol functions from ethosu_driver.c
* To handle mutex and semaphores
*******************************************************************************/
void *ethosu_mutex_create(void)
{
int status = 0;
struct k_mutex *mutex = k_malloc(sizeof(*mutex));
status = k_mutex_init(mutex);
if (status != 0)
{
printk("Failed to create mutex with error - %d\n", status);
}
return (void *)mutex;
}
void ethosu_mutex_lock(void *mutex)
{
int status = 0;
status = k_mutex_lock((struct k_mutex *)mutex, K_FOREVER);
if (status != 0)
{
printk("Failed to lock mutex with error - %d\n", status);
}
}
void ethosu_mutex_unlock(void *mutex)
{
k_mutex_unlock((struct k_mutex *)mutex);
}
void *ethosu_semaphore_create(void)
{
int status = 0;
struct k_sem *sem = k_malloc(sizeof(*sem));
status = k_sem_init(sem, 1, 100);
if (status != 0)
{
printk("Failed to create semaphore with error - %d\n", status);
}
return (void *)sem;
}
void ethosu_semaphore_take(void *sem)
{
int status = 0;
status = k_sem_take((struct k_sem *)sem, K_FOREVER);
if (status != 0)
{
printk("Failed to take semaphore with error - %d\n", status);
}
}
void ethosu_semaphore_give(void *sem)
{
k_sem_give((struct k_sem *)sem);
}
struct ethosu_dts_info
{
uint32_t base_addr;
uint32_t secure_enable;
uint32_t privilege_enable;
uint32_t irq;
uint32_t irq_priority;
uint32_t inst;
};
struct ethosu_data
{
struct ethosu_driver drv;
void (*irq_config)(void);
};
static int ethosu_zephyr_init(const struct device *dev)
{
const struct ethosu_dts_info *config = dev->config;
const struct ethosu_data *data = dev->data;
struct ethosu_driver *drv = (struct ethosu_driver *)&data->drv;
struct ethosu_driver_version version;
printk("Ethos-U DTS info. base_address=0x%x, inst=%u, secure_enable=%u, privilege_enable=%u, irq=%u, "
"irq_priority=%u\n",
config->base_addr,
config->inst,
config->secure_enable,
config->privilege_enable,
config->irq,
config->irq_priority);
ethosu_get_driver_version(&version);
printk("Version. major=%u, minor=%u, patch=%u\n", version.major, version.minor, version.patch);
if (ethosu_init(drv, (void *)(config->base_addr), NULL, 0, config->secure_enable, config->privilege_enable))
{
printk("Failed to initialize NPU with ethosu_init().\n");
return -EINVAL;
}
data->irq_config();
return 0;
}
#define ETHOSU_DEVICE_INIT(n) \
static void ethosu_zephyr_irq_config_##n(void); \
\
static struct ethosu_data ethosu_data_##n = {.irq_config = ðosu_zephyr_irq_config_##n}; \
\
static void ethosu_zephyr_irq_handler_##n(void) \
{ \
struct ethosu_driver *drv = ðosu_data_##n.drv; \
ethosu_irq_handler(drv); \
} \
\
static void ethosu_zephyr_irq_config_##n(void) \
{ \
IRQ_DIRECT_CONNECT(DT_INST_IRQN(n), DT_INST_IRQ(n, priority), ethosu_zephyr_irq_handler_##n, 0); \
irq_enable(DT_INST_IRQN(n)); \
} \
\
static const struct ethosu_dts_info ethosu_dts_info_##n = { \
.base_addr = DT_INST_REG_ADDR(n), \
.secure_enable = DT_INST_PROP(n, secure_enable), \
.privilege_enable = DT_INST_PROP(n, privilege_enable), \
.irq = DT_INST_IRQN(n), \
.irq_priority = DT_INST_IRQ(n, priority), \
.inst = n, \
}; \
\
DEVICE_DT_INST_DEFINE(n, \
ethosu_zephyr_init, \
NULL, \
ðosu_data_##n, \
ðosu_dts_info_##n, \
POST_KERNEL, \
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, \
NULL);
DT_INST_FOREACH_STATUS_OKAY(ETHOSU_DEVICE_INIT);
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