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#define SII_OSAL_LINUX_TIMER_C
#include <linux/workqueue.h>
#include <linux/hrtimer.h>
#include <linux/slab.h>
#include "sii_hal.h"
#include "osal/include/osal.h"
#define MSEC_TO_NSEC(x) (x * 1000000UL)
#define MAX_TIMER_NAME_LEN 16
typedef struct _SiiOsTimerInfo_t {
struct list_head listEntry;
struct work_struct workItem;
uint8_t flags;
char timerName[MAX_TIMER_NAME_LEN];
struct hrtimer hrTimer;
timerCallbackHandler_t callbackHandler;
void *callbackParam;
uint32_t timeMsec;
bool bPeriodic;
} timerObject_t;
#define TIMER_OBJ_FLAG_WORK_IP 0x01
#define TIMER_OBJ_FLAG_DEL_REQ 0x02
static struct list_head timerList;
static struct workqueue_struct *timerWorkQueue;
static void WorkHandler(struct work_struct *work)
{
timerObject_t *pTimerObj = container_of(work, timerObject_t, workItem);
pTimerObj->flags |= TIMER_OBJ_FLAG_WORK_IP;
if (HalAcquireIsrLock() == HAL_RET_SUCCESS) {
if (pTimerObj->callbackHandler)
(pTimerObj->callbackHandler) (pTimerObj->callbackParam);
HalReleaseIsrLock();
}
pTimerObj->flags &= ~TIMER_OBJ_FLAG_WORK_IP;
if (pTimerObj->flags & TIMER_OBJ_FLAG_DEL_REQ) {
kfree(pTimerObj);
}
}
static enum hrtimer_restart TimerHandler(struct hrtimer *timer)
{
timerObject_t *pTimerObj = container_of(timer, timerObject_t, hrTimer);
ktime_t timerPeriod;
queue_work(timerWorkQueue, &pTimerObj->workItem);
if (pTimerObj->bPeriodic) {
timerPeriod = ktime_set(0, MSEC_TO_NSEC(pTimerObj->timeMsec));
hrtimer_forward(&pTimerObj->hrTimer,
pTimerObj->hrTimer.base->get_time(), timerPeriod);
return HRTIMER_RESTART;
}
return HRTIMER_NORESTART;
}
SiiOsStatus_t SiiOsInit(uint32_t maxChannels)
{
INIT_LIST_HEAD(&timerList);
timerWorkQueue = create_workqueue("Sii_timer_work");
if (timerWorkQueue == NULL) {
return SII_OS_STATUS_ERR_NOT_AVAIL;
}
return SII_OS_STATUS_SUCCESS;
}
SiiOsStatus_t SiiOsTerm(void)
{
timerObject_t *timerObj;
int status;
while (!list_empty(&timerList)) {
timerObj = list_first_entry(&timerList, timerObject_t, listEntry);
status = hrtimer_try_to_cancel(&timerObj->hrTimer);
if (status >= 0) {
list_del(&timerObj->listEntry);
kfree(timerObj);
}
}
flush_workqueue(timerWorkQueue);
destroy_workqueue(timerWorkQueue);
timerWorkQueue = NULL;
return SII_OS_STATUS_SUCCESS;
}
SiiOsStatus_t SiiOsTimerCreate(const char *pName, void (*pTimerFunction) (void *pArg),
void *pTimerArg, bool_t timerStartFlag,
uint32_t timeMsec, bool_t periodicFlag, SiiOsTimer_t *pTimerId)
{
timerObject_t *timerObj;
SiiOsStatus_t status = SII_OS_STATUS_SUCCESS;
if (pTimerFunction == NULL) {
return SII_OS_STATUS_ERR_INVALID_PARAM;
}
timerObj = kmalloc(sizeof(timerObject_t), GFP_KERNEL);
if (timerObj == NULL) {
return SII_OS_STATUS_ERR_NOT_AVAIL;
}
strncpy(timerObj->timerName, pName, MAX_TIMER_NAME_LEN - 1);
timerObj->timerName[MAX_TIMER_NAME_LEN - 1] = 0;
timerObj->callbackHandler = pTimerFunction;
timerObj->callbackParam = pTimerArg;
timerObj->timeMsec = timeMsec;
timerObj->bPeriodic = periodicFlag;
INIT_WORK(&timerObj->workItem, WorkHandler);
list_add(&timerObj->listEntry, &timerList);
hrtimer_init(&timerObj->hrTimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
timerObj->hrTimer.function = TimerHandler;
if (timerStartFlag) {
status = SiiOsTimerSchedule(timerObj, timeMsec);
}
*pTimerId = timerObj;
return status;
}
SiiOsStatus_t SiiOsTimerDelete(SiiOsTimer_t timerId)
{
timerObject_t *timerObj;
list_for_each_entry(timerObj, &timerList, listEntry) {
if (timerObj == timerId) {
break;
}
}
if (timerObj != timerId) {
SII_DEBUG_PRINT(SII_OSAL_DEBUG_TRACE,
"Invalid timerId %p passed to SiiOsTimerDelete\n", timerId);
return SII_OS_STATUS_ERR_INVALID_PARAM;
}
list_del(&timerObj->listEntry);
hrtimer_cancel(&timerObj->hrTimer);
if (timerObj->flags & TIMER_OBJ_FLAG_WORK_IP) {
timerObj->flags |= TIMER_OBJ_FLAG_DEL_REQ;
return SII_OS_STATUS_SUCCESS;
}
cancel_work_sync(&timerObj->workItem);
kfree(timerObj);
return SII_OS_STATUS_SUCCESS;
}
SiiOsStatus_t SiiOsTimerSchedule(SiiOsTimer_t timerId, uint32_t timeMsec)
{
timerObject_t *timerObj;
ktime_t timerPeriod;
list_for_each_entry(timerObj, &timerList, listEntry) {
if (timerObj == timerId) {
break;
}
}
if (timerObj != timerId) {
SII_DEBUG_PRINT(SII_OSAL_DEBUG_TRACE,
"Invalid timerId %p passed to SiiOsTimerSchedule\n", timerId);
return SII_OS_STATUS_ERR_INVALID_PARAM;
}
timerPeriod = ktime_set(0, MSEC_TO_NSEC(timeMsec));
hrtimer_start(&timerObj->hrTimer, timerPeriod, HRTIMER_MODE_REL);
return SII_OS_STATUS_SUCCESS;
}
uint32_t SiiOsGetTimeResolution(void)
{
return 1;
}
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