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rtbth_hlpr_linux.c
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rtbth_hlpr_linux.c
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/*
*************************************************************************
* Ralink Technology Corporation
* 5F., No. 5, Taiyuan 1st St., Jhubei City,
* Hsinchu County 302,
* Taiwan, R.O.C.
*
* (c) Copyright 2012, Ralink Technology Corporation
*
* 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 program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
*************************************************************************/
#include "include/rtbt_osabl.h"
#include "include/rt_linux.h"
static DEFINE_SPINLOCK(g_reslock);
/*******************************************************************************
Message dump/printing related functions.
*******************************************************************************/
int RtlStringCchPrintfA(
IN char *str,
IN int len,
IN const char *format,
...)
{
va_list args;
int i;
va_start(args, format);
i = vsnprintf(str, len, format, args);
va_end(args);
return i;
}
/*******************************************************************************
Memory operation related functions.
*******************************************************************************/
void *ral_mem_valloc(int size)
{
return vmalloc(size);
}
int ral_mem_vfree(void *ptr)
{
vfree(ptr);
return TRUE;
}
void *ral_mem_alloc(int size, RAL_MEM_FLAG memFlag)
{
void *pMemPtr = NULL;
if (memFlag == RAL_MEM_NORMAL)
pMemPtr = kmalloc(size, GFP_KERNEL);
return pMemPtr;
}
int ral_mem_free(void *ptr)
{
kfree(ptr);
return TRUE;
}
void RtlCopyMemory(
IN VOID *Destination,
IN const VOID *Source,
IN int Length)
{
memcpy(Destination, Source, Length);
}
VOID RtlZeroMemory(
IN VOID *Destination,
IN int Length)
{
memset(Destination, 0, Length);
}
VOID RtlFillMemory(
IN VOID *Destination,
IN int c,
IN int Length)
{
memset(Destination, c, Length);
}
int RtlCompareMemory(
IN VOID *s1,
IN VOID *s2,
IN int size)
{
return memcmp(s1, s2, size);
}
/*******************************************************************************
Lock/Synchronization related functions.
*******************************************************************************/
int ral_spin_lock(KSPIN_LOCK *pLock, unsigned long *irq_flag)
{
unsigned long local_flag;
if (!pLock->pOSLock) {
printk("Error, invalid lock structure!\n");
dump_stack();
return FALSE;
}
spin_lock_irqsave(&g_reslock, local_flag);
if (pLock->state == RES_INVALID) {
spin_unlock_irqrestore(&g_reslock, local_flag);
printk("Error, try to lock a invalid structure!\n");
return FALSE;
}
else {
pLock->ref_cnt++;
pLock->state = RES_INUSE;
}
spin_unlock_irqrestore(&g_reslock, local_flag);
spin_lock_irqsave((spinlock_t *)pLock->pOSLock, *irq_flag);
return TRUE;
}
int ral_spin_unlock(KSPIN_LOCK *pLock, unsigned long irq_flag)
{
unsigned long local_flag;
spin_unlock_irqrestore((spinlock_t *)pLock->pOSLock, irq_flag);
spin_lock_irqsave(&g_reslock, local_flag);
if (pLock->ref_cnt == 0) {
printk("Error, unlock a not acquired spin!\n");
dump_stack();
}
pLock->ref_cnt --;
if (pLock->state == RES_INUSE && pLock->ref_cnt == 0)
pLock->state = RES_VALID;
spin_unlock_irqrestore(&g_reslock, local_flag);
return TRUE;
}
int ral_spin_init(KSPIN_LOCK *pLock)
{
int flags;
spinlock_t *pSpinLock;
unsigned long irq_flags;
if (in_interrupt())
flags = GFP_ATOMIC;
else
flags = GFP_KERNEL;
memset(pLock, 0, sizeof(KSPIN_LOCK));
pSpinLock = kmalloc(sizeof(spinlock_t), flags);
if (pSpinLock){
pLock->pOSLock = pSpinLock;
spin_lock_init(pSpinLock);
spin_lock_irqsave(&g_reslock, irq_flags);
pLock->state = RES_VALID;
pLock->ref_cnt = 0;
spin_unlock_irqrestore(&g_reslock, irq_flags);
return 0;
}
return -1;
}
int ral_spin_deinit(KSPIN_LOCK *pLock)
{
unsigned long irq_flags;
if (pLock->pOSLock) {
spin_lock_irqsave(&g_reslock, irq_flags);
if (pLock->state == RES_INUSE) {
spin_unlock_irqrestore(&g_reslock, irq_flags);
printk("Error, free a in_used spin!\n");
dump_stack();
} else {
pLock->state = RES_INVALID;
spin_unlock_irqrestore(&g_reslock, irq_flags);
kfree(pLock->pOSLock);
pLock->pOSLock = NULL;
}
}
return TRUE;
}
/*
Work around to make Windows feel fun!
*/
// TODO: Shiang, following functions need to revised!!
int KeAcquireSpinLockAtDpcLevel(KSPIN_LOCK *pLock)
{
// Do spin lock in Dpc level, it actually just return directly.
//printk("%s(): TODO!!!\n", __FUNCTION__);
return TRUE;
}
int KeReleaseSpinLockFromDpcLevel(KSPIN_LOCK *pLock)
{
// Do spin lock in Dpc level, it actually just return directly.
//printk("%s(): TODO!!!\n", __FUNCTION__);
return TRUE;
}
/*******************************************************************************
Eventing system related functions.
*******************************************************************************/
LONG KeSetEvent(
INOUT KEVENT *Event,
IN KPRIORITY Increment,
IN BOOLEAN Wait)
{
return 0;
}
NTSTATUS KeWaitForSingleObject(
IN KEVENT *Object,
IN int WaitReason,
IN int WaitMode,
IN BOOLEAN Alertable,
IN PLARGE_INTEGER Timeout)
{
return 0;
}
NTSTATUS KeInitializeEvent(
IN KEVENT *pEventObj,
IN int Type,
IN EVENT_STATE init_state)
{
NTSTATUS status= STATUS_SUCCESS;
struct semaphore *pSema;
int initVal, flags;
/* First allocate the memory space for Event Object */
flags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
pSema = kmalloc(sizeof(struct semaphore), flags);
if (pSema){
initVal = ((init_state == EVENT_LOCKED) ? 0 : 1);
printk("Create Event with status %s\n", (initVal == 1 ? "UNLOCKED" : "LOCKED"));
sema_init(pSema, initVal);
pEventObj->pOSEvent = pSema;
}
else
status = STATUS_FAILURE;
return status;
}
NTSTATUS KeDestoryEvent(
IN KEVENT *pEventObj)
{
if (pEventObj->pOSEvent)
kfree(pEventObj->pOSEvent);
return TRUE;
}
ULONG KeQuerySystemTime(LARGE_INTEGER *timeval)
{
ULONG nowTime = jiffies;
timeval->QuadPart = nowTime;
return nowTime;
}
// Unify all delay routine by using NdisStallExecution
VOID rtbt_usec_delay(
IN ULONG usec)
{
ULONG i;
for (i = 0; i < (usec / 50); i++)
udelay(50);
if (usec % 50)
udelay(usec % 50);
}
/*
*/
// TODO: Change this windows function to a generic function name
void KeStallExecutionProcessor(
IN ULONG usec)
{
rtbt_usec_delay(usec);
}
BOOLEAN KeSetTimer(
IN KTIMER *os_timer,
IN LARGE_INTEGER msec,
IN PKDPC Dpc)
{
struct timer_list *timer;
unsigned long irqflags, expires;
ral_spin_lock(&os_timer->lock, &irqflags);
if ((os_timer->state == RES_INVALID) || (!os_timer->pOSTimer)) {
printk("os_timer invalid state(%d) or timer structure(0x%p) is NULL!\n",
os_timer->state, os_timer->pOSTimer);
ral_spin_unlock(&os_timer->lock, irqflags);
return FALSE;
}
timer = os_timer->pOSTimer;
expires = msec.QuadPart * HZ / 1000;
timer->expires = jiffies + expires;
// printk("set timer->expires as 0x%x, original msec=0x%x, now jiffies=0x%x!\n", timer->expires, msec.QuadPart, jiffies);
if (timer_pending(timer))
mod_timer(timer, timer->expires);
else {
os_timer->dpc.func = (void *)Dpc->func;
os_timer->dpc.data = (long)Dpc->data;
add_timer(timer);
}
ral_spin_unlock(&os_timer->lock, irqflags);
return FALSE;
}
BOOLEAN KeCancelTimer(
IN KTIMER *os_timer)
{
int status;
unsigned long irqflags;
ral_spin_lock(&os_timer->lock, &irqflags);
if (os_timer->pOSTimer && (os_timer->state == RES_VALID)) {
status = del_timer_sync((struct timer_list *)os_timer->pOSTimer);
if (status < 0)
printk("%s(): del os timer failed(%d)!\n", __FUNCTION__, status);
}
ral_spin_unlock(&os_timer->lock, irqflags);
return TRUE;
}
INT KeFreeTimer(
IN PKTIMER os_timer)
{
struct timer_list *timer;
unsigned long irqflags;
if (os_timer->state == RES_INVALID)
return 0;
ral_spin_lock(&os_timer->lock, &irqflags);
os_timer->state = RES_INVALID;
ral_spin_unlock(&os_timer->lock, irqflags);
if (os_timer->pOSTimer) {
timer = (struct timer_list *)os_timer->pOSTimer;
if (timer_pending(timer))
del_timer_sync(timer);
kfree(timer);
os_timer->pOSTimer = NULL;
}
ral_spin_deinit(&os_timer->lock);
return 0;
}
INT ral_timer_init(
IN PKTIMER os_timer,
IN ULONG func)
{
unsigned long irqflags;
struct timer_list *timer;
memset(os_timer, 0, sizeof(KTIMER));
if (ral_spin_init(&os_timer->lock))
return -1;
os_timer->pOSTimer = kmalloc(sizeof(struct timer_list), GFP_KERNEL);
if (os_timer->pOSTimer) {
timer = os_timer->pOSTimer;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)
timer_setup(timer, (void *)func, 0);
#else
setup_timer(timer, (void *)func, (unsigned long)os_timer);
#endif
ral_spin_lock(&os_timer->lock, &irqflags);
os_timer->state = RES_VALID;
ral_spin_unlock(&os_timer->lock, irqflags);
return 0;
} else {
ral_spin_deinit(&os_timer->lock);
return -1;
}
}
VOID KeInitializeDpc(
OUT PKDPC Dpc,
IN PKDEFERRED_ROUTINE DeferredRoutine,
IN PVOID DeferredContext)
{
Dpc->func = (PKDEFERRED_ROUTINE)DeferredRoutine;
Dpc->data = (ULONG)DeferredContext;
}
int ral_file_obj_init(PSTRING FileName, RAL_FILE **pFileHd)
{
/* struct file *pf; */
int status = STATUS_FAILURE;
*pFileHd = NULL;
return status;
}
/* this function only support for READ only. */
int ral_file_open(RAL_FILE *pFileHd, RTBT_FILE_OP_MODE opMode)
{
/* struct file *fp; */
int status = STATUS_FAILURE;
int flag;
if (pFileHd == NULL)
return status;
switch(opMode){
case RTBT_FOP_READ:
flag = 1; //O_RDONLY;
break;
default:
return STATUS_FAILURE;
}
return status;
}
int ral_file_read(RAL_FILE *pFileHd, void *pBuf, int len)
{
// TODO:
return FALSE;
}
int ral_file_write(RAL_FILE *pFileHd, void *pBuf, int len)
{
// TODO:
return FALSE;
}
int ral_file_close(RAL_FILE *pFileHd)
{
// TODO:
return FALSE;
}
int ral_file_obj_deinit(RAL_FILE *pFileHd)
{
// TODO:
return FALSE;
}
/*******************************************************************************
Task create/management/kill related functions.
*******************************************************************************/
NDIS_STATUS ral_task_kill(
IN KTHREAD *pTask)
{
int ret = STATUS_FAILURE;
RTBT_OS_TASK *pOSThread = (RTBT_OS_TASK *)pTask->pOSThread;
#ifdef KTHREAD_SUPPORT
if (pOSThread->kthread_task) {
kthread_stop(pOSThread->kthread_task);
ret = STATUS_SUCCESS;
}
#else
if(IS_VALID_PID(pOSThread->taskPID)) {
printk(KERN_WARNING "Terminate the task(%s) with pid(%d)!\n",
pOSThread->taskName, GET_PID_NUMBER(pOSThread->taskPID));
mb();
pOSThread->task_killed = 1;
mb();
ret = KILL_THREAD_PID(pOSThread->taskPID, SIGTERM, 1);
if (ret){
printk(KERN_WARNING "kill task(%s) with pid(%d) failed(retVal=%d)!\n",
pOSThread->taskName, GET_PID_NUMBER(pOSThread->taskPID), ret);
} else {
wait_for_completion(&pOSThread->taskComplete);
pOSThread->taskPID = THREAD_PID_INIT_VALUE;
pOSThread->task_killed = 0;
ret = STATUS_SUCCESS;
}
}
#endif
return ret;
}
INT ral_task_notify_exit(
IN KTHREAD *pTask)
{
#ifndef KTHREAD_SUPPORT
RTBT_OS_TASK *pOSThread = (RTBT_OS_TASK *)pTask->pOSThread;
complete_and_exit(&pOSThread->taskComplete, 0);
#endif
return 0;
}
void ral_task_customize(
IN KTHREAD *pTask)
{
#ifndef KTHREAD_SUPPORT
RTBT_OS_TASK *pOSTask = (RTBT_OS_TASK *)pTask->pOSThread;
daemonize((PSTRING)&pOSTask->taskName[0]);
allow_signal(SIGTERM);
allow_signal(SIGKILL);
current->flags |= PF_NOFREEZE;
RTMP_GET_OS_PID(pOSTask->taskPID, current->pid);
/* signal that we've started the thread */
complete(&pOSTask->taskComplete);
#endif // KTHREAD_SUPPORT //
}
int ral_task_attach(
IN KTHREAD *pTask,
IN RTBT_OS_TASK_CALLBACK fn,
IN ULONG arg)
{
RTBT_OS_TASK *pOSTask = (RTBT_OS_TASK *)pTask->pOSThread;
NDIS_STATUS status = STATUS_SUCCESS;
#ifndef KTHREAD_SUPPORT
pid_t pid_number = -1;
#endif // KTHREAD_SUPPORT //
#ifdef KTHREAD_SUPPORT
pOSTask->task_killed = 0;
pOSTask->kthread_task = NULL;
pOSTask->kthread_task = kthread_run(fn, (void *)arg, pOSTask->taskName);
if (IS_ERR(pOSTask->kthread_task))
status = STATUS_FAILURE;
#else
pid_number = kernel_thread(fn, (void *)arg, RTBT_OS_MGMT_TASK_FLAGS);
if (pid_number < 0) {
printk(KERN_WARNING "Attach task(%s) failed!\n", pOSTask->taskName);
status = STATUS_FAILURE;
} else {
// Wait for the thread to start
wait_for_completion(&pOSTask->taskComplete);
status = STATUS_SUCCESS;
}
#endif
printk("%s(): task attach done, status=%d\n", __FUNCTION__, status);
return status;
}
int ral_task_init(
IN KTHREAD *pTask,
IN PSTRING pTaskName,
IN VOID *pPriv)
{
int len;
RTBT_OS_TASK *pOSTask;
RTBT_ASSERT(pTask);
pTask->pOSThread = kmalloc(sizeof(RTBT_OS_TASK), GFP_KERNEL);
if (pTask->pOSThread == NULL)
return STATUS_FAILURE;
pOSTask = (RTBT_OS_TASK *)pTask->pOSThread;
#ifndef KTHREAD_SUPPORT
memset((PUCHAR)pOSTask, 0, sizeof(RTBT_OS_TASK));
#endif
len = strlen(pTaskName);
//len = len > (RTBT_OS_TASK_NAME_LEN -1) ? (RTBT_OS_TASK_NAME_LEN-1) : len;
memcpy(&pOSTask->taskName[0], pTaskName, len > (RTBT_OS_TASK_NAME_LEN -1) ? (RTBT_OS_TASK_NAME_LEN-1) : len);
pOSTask->priv = pPriv;
#ifndef KTHREAD_SUPPORT
RTMP_SEM_EVENT_INIT_LOCKED(&(pOSTask->taskSema));
pOSTask->taskPID = THREAD_PID_INIT_VALUE;
init_completion(&pOSTask->taskComplete);
#endif
return STATUS_SUCCESS;
}
int ral_task_deinit(
IN KTHREAD *pTask)
{
RTBT_OS_TASK *pOSTask;
RTBT_ASSERT(pTask);
if (pTask->refCnt > 1) {
DebugPrint(ERROR, DBG_MISC, "Err, pTask->refCnt=%d!\n", pTask->refCnt);
}
if (pTask->pOSThread) {
pOSTask = pTask->pOSThread;
RTMP_SEM_EVENT_DESTORY(&pOSTask->taskSema);
kfree(pTask->pOSThread);
pTask->pOSThread = NULL;
pTask->refCnt = 0;
}
return STATUS_SUCCESS;
}
#ifdef OS_ABL_SUPPORT
static struct rtbt_dev_entry *g_devlist = NULL;
static DEFINE_SPINLOCK(g_devlock);
void dump_dev_list(struct rtbt_dev_entry *devlist)
{
unsigned long irq_flag;
struct rtbt_dev_entry *dev_ent;
int cnt = 0;
int dump_all;
dump_all = devlist ? 0 : 1;
printk("Wrapper:dump the global dev list:\n");
spin_lock_irqsave(&g_devlock, irq_flag);
dev_ent = dump_all ? g_devlist : devlist;
while (dev_ent != NULL) {
struct ral_dev_id *dev_id;
printk("\tDevGroup[%d]:\n", cnt);
printk("\t\tinfType = %d\n", dev_ent->infType);
printk("\t\tdevType = %d\n", dev_ent->devType);
printk("\t\tdev_priv = 0x%p\n", dev_ent->dev_ops);
printk("\t\tos_priv = 0x%p\n", dev_ent->os_private);
printk("\t\tmlen = %d\n", dev_ent->mlen);
printk("\t\tdevIDList:\n");
if (dev_ent->pDevIDList) {
dev_id = dev_ent->pDevIDList;
while((dev_id->pid != 0) && (dev_id->vid != 0)) {
printk("\t\t\tPID:0x%02x, DID:0x%02x\n",
dev_id->pid, dev_id->vid);
dev_id++;
}
}
dev_ent = (dump_all ? dev_ent->next : NULL);
}
printk("\n\n");
spin_unlock_irqrestore(&g_devlock, irq_flag);
}
static int rtbt_dev_list_add(struct rtbt_dev_entry *devlist)
{
unsigned long irq_flag;
printk("%s(): add devlist from global list!\n", __FUNCTION__);
spin_lock_irqsave(&g_devlock, irq_flag);
devlist->next = g_devlist;
g_devlist = devlist;
spin_unlock_irqrestore(&g_devlock, irq_flag);
dump_dev_list(NULL);
return 0;
}
static int rtbt_dev_list_del(struct rtbt_dev_entry *devlist)
{
unsigned long irq_flag;
struct rtbt_dev_entry *head, *prev;
printk("%s(): remove devlist from global list!\n", __FUNCTION__);
spin_lock_irqsave(&g_devlock, irq_flag);
head = g_devlist;
while (head != NULL){
if (devlist == head)
break;
prev = head;
head = head->next;
}
if (head){
if (head == g_devlist)
g_devlist = head->next;
else
prev->next = head->next;
}
spin_unlock_irqrestore(&g_devlock, irq_flag);
dump_dev_list(NULL);
return 0;
}
static int __init rtbt_linux_init(void)
{
unsigned long irq_flag;
printk("-->%s()\n", __FUNCTION__);
spin_lock_init(&g_devlock);
spin_lock_init(&g_reslock);
spin_lock_irqsave(&g_devlock, irq_flag);
g_devlist = NULL;
spin_unlock_irqrestore(&g_devlock, irq_flag);
printk("<--%s(): g_devlist(@0x%lx)=0x%p!\n", __FUNCTION__, (ULONG)&g_devlist, g_devlist);
return 0;
}
static void __exit rtbt_linux_exit(void)
{
printk("-->%s()\n", __FUNCTION__);
while (g_devlist != NULL)
ral_os_unregister(g_devlist);
printk("<--%s(): g_devlist(@0x%lx)=0x%p!\n", __FUNCTION__, (ULONG)&g_devlist, g_devlist);
return;
}
MODULE_AUTHOR("Ralink Tech.");
MODULE_DESCRIPTION("Support for Ralink Bluetooth cards");
MODULE_SUPPORTED_DEVICE("Ralink Bluetooth cards");
MODULE_LICENSE("GPL");
module_init(rtbt_linux_init);
module_exit(rtbt_linux_exit);
#endif // OS_ABL_SUPPORT //
int ral_os_register(struct rtbt_dev_entry *pDevList)
{
int retVal = -1;
#ifdef OS_ABL_SUPPORT
rtbt_dev_list_add(pDevList);
#endif // OS_ABL_SUPPORT //
#ifdef RTBT_IFACE_PCI
if ((pDevList->infType == RAL_INF_PCI) &&
(pDevList->devType == RAL_DEV_BT)){
retVal = rtbt_iface_pci_hook(pDevList);
if (retVal)
printk("register device to OS failed\n");
}
#endif // RTBT_IFACE_PCI //
return retVal;
}
int ral_os_unregister(struct rtbt_dev_entry * pDevList)
{
int rv = -1;
#ifdef RTBT_IFACE_PCI
if (pDevList->infType == RAL_INF_PCI) {
rv = rtbt_iface_pci_unhook(pDevList);
if (rv)
printk("unregister device to OS failed\n");
}
#endif // RTBT_IFACE_PCI //
#ifdef OS_ABL_SUPPORT
rtbt_dev_list_del(pDevList);
#endif // OS_ABL_SUPPORT //
return rv;
}