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/** @addtogroup MCD_IMPL_LIB
* @{
* @file
*
* Client library device management.
*
* Device and Trustlet Session management Funtions.
*
* <!-- Copyright Giesecke & Devrient GmbH 2009 - 2011 -->
*/
#include <linux/list.h>
#include <linux/slab.h>
#include "mcKernelApi.h"
#include "public/MobiCoreDriverApi.h"
#include "device.h"
#include "common.h"
//------------------------------------------------------------------------------
wsm_ptr wsm_create(
addr_t virtAddr,
uint32_t len,
uint32_t handle,
addr_t physAddr //= NULL this may be unknown, so is can be omitted.
)
{
wsm_ptr pWsm = kzalloc(sizeof(wsm_t), GFP_KERNEL);
pWsm->virtAddr = virtAddr;
pWsm->len = len;
pWsm->handle = handle;
pWsm->physAddr = physAddr;
return pWsm;
}
//------------------------------------------------------------------------------
mcore_device_t* mcore_device_create(
uint32_t deviceId,
connection_t *connection
) {
mcore_device_t *dev = kzalloc(sizeof(mcore_device_t), GFP_KERNEL);
dev->deviceId = deviceId;
dev->connection = connection;
INIT_LIST_HEAD(&dev->sessionVector);
INIT_LIST_HEAD(&dev->wsmL2Vector);
return dev;
}
//------------------------------------------------------------------------------
void mcore_device_cleanup(
mcore_device_t *dev
) {
session_t *tmp;
wsm_ptr pWsm;
struct list_head *pos, *q;
// Delete all session objects. Usually this should not be needed as closeDevice()
// requires that all sessions have been closed before.
//
list_for_each_safe(pos, q, &dev->sessionVector) {
tmp=list_entry(pos, session_t, list);
list_del(pos);
session_cleanup(tmp);
}
// Free all allocated WSM descriptors
list_for_each_safe(pos, q, &dev->wsmL2Vector) {
pWsm=list_entry(pos, wsm_t, list);
//mcKMod_free(dev->pInstance, pWsm->handle);
list_del(pos);
kfree(pWsm);
}
connection_cleanup(dev->connection);
mcore_device_close(dev);
kfree(dev);
}
//------------------------------------------------------------------------------
bool mcore_device_open(
mcore_device_t *dev,
const char *deviceName
) {
dev->pInstance = mobicore_open();
return (dev->pInstance != NULL);
}
//------------------------------------------------------------------------------
void mcore_device_close(
mcore_device_t *dev
) {
mobicore_release(dev->pInstance);
}
//------------------------------------------------------------------------------
bool mcore_device_hasSessions(
mcore_device_t *dev
) {
return !list_empty(&dev->sessionVector);
}
//------------------------------------------------------------------------------
bool mcore_device_createNewSession(
mcore_device_t *dev,
uint32_t sessionId,
connection_t *connection
) {
// Check if sessionId already exists
if (mcore_device_resolveSessionId(dev, sessionId))
{
MCDRV_DBG_ERROR(" session %u already exists", sessionId);
return false;
}
session_t *session = session_create(sessionId, dev->pInstance, connection);
list_add_tail(&(session->list), &(dev->sessionVector));
return true;
}
//------------------------------------------------------------------------------
bool mcore_device_removeSession(
mcore_device_t *dev,
uint32_t sessionId
) {
bool ret = false;
session_t *tmp;
struct list_head *pos, *q;
list_for_each_safe(pos, q, &dev->sessionVector) {
tmp=list_entry(pos, session_t, list);
if (tmp->sessionId == sessionId) {
list_del(pos);
session_cleanup(tmp);
ret = true;
break;
}
}
return ret;
}
//------------------------------------------------------------------------------
session_t *mcore_device_resolveSessionId(
mcore_device_t *dev,
uint32_t sessionId
) {
session_t *ret = NULL;
session_t *tmp;
struct list_head *pos;
// Get session_t for sessionId
list_for_each(pos, &dev->sessionVector) {
tmp=list_entry(pos, session_t, list);
if (tmp->sessionId == sessionId) {
ret = tmp;
break;
}
}
return ret;
}
//------------------------------------------------------------------------------
wsm_ptr mcore_device_allocateContiguousWsm(
mcore_device_t *dev,
uint32_t len
) {
wsm_ptr pWsm = NULL;
do
{
if (0 == len)
{
break;
}
// Allocate shared memory
addr_t virtAddr;
uint32_t handle;
addr_t physAddr;
int ret = mobicore_allocate_wsm(dev->pInstance,
len,
&handle,
&virtAddr,
&physAddr);
if (0 != ret)
{
break;
}
// Register (vaddr,paddr) with device
pWsm = wsm_create(virtAddr, len, handle,physAddr);
list_add_tail(&(pWsm->list), &(dev->wsmL2Vector));
} while (0);
// Return pointer to the allocated memory
return pWsm;
}
//------------------------------------------------------------------------------
bool mcore_device_freeContiguousWsm(
mcore_device_t *dev,
wsm_ptr pWsm
) {
bool ret = false;
wsm_t *tmp;
struct list_head *pos;
list_for_each(pos, &dev->wsmL2Vector) {
tmp=list_entry(pos, wsm_t, list);
if (tmp == pWsm) {
ret = true;
break;
}
}
if (ret)
{
MCDRV_DBG_VERBOSE("freeWsm virtAddr=0x%p, handle=%d",
pWsm->virtAddr,pWsm->handle);
// ignore return code
mobicore_free(dev->pInstance, pWsm->handle);
list_del(pos);
kfree(pWsm);
}
return ret;
}
//------------------------------------------------------------------------------
wsm_ptr mcore_device_findContiguousWsm(
mcore_device_t *dev,
addr_t virtAddr
) {
wsm_ptr pWsm;
struct list_head *pos;
list_for_each(pos, &dev->wsmL2Vector) {
pWsm=list_entry(pos, wsm_t, list);
if (virtAddr == pWsm->virtAddr) {
return pWsm;
}
}
return NULL;
}
/** @} */
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