PRIVATE void Console_scrollDown(void) {
/* move every line i to line i-1 */
for(int i = 1; i < vgaHeight; i++) {
char* src = (char*) vgaRam + ((i) * vgaWidth * 2);
char* dest = (char*) vgaRam + ((i - 1) * vgaWidth * 2);
Memory_copy(dest, src, vgaWidth * 2);
}
/* clear last row */
cursorY = vgaHeight - 1;
Console_clearLine(cursorY);
}
/*!
* @brief Linux specific function to close the driver.
*/
static
long SyslinkMemMgrDrv_ioctl (struct file * filp,
unsigned int cmd,
unsigned long args)
{
int osStatus = 0;
Int32 status = MEMMGR_SUCCESS;
SyslinkMemMgrDrv_CmdArgs *dstArgs = (SyslinkMemMgrDrv_CmdArgs *) args;
Int32 ret;
UInt32 size;
SyslinkMemMgrDrv_CmdArgs cargs;
GT_3trace (curTrace, GT_ENTER, "SyslinkMemMgrDrv_ioctl",
filp, cmd, args);
/* Copy the full args from user-side */
ret = copy_from_user (&cargs,
dstArgs,
sizeof (SyslinkMemMgrDrv_CmdArgs));
GT_assert (curTrace, (ret == 0));
switch (cmd) {
case CMD_MEMMGR_CREATE:
{
Ptr params = NULL;
if (cargs.args.create.type == SyslinkMemMgr_TYPE_SHAREDMEM) {
size = sizeof(SyslinkMemMgr_SharedMemory_Params);
params = Memory_alloc (NULL,
size,
0,
NULL);
Memory_copy(params,
cargs.args.create.params,
size);
}
if (params != NULL) {
cargs.args.create.handle = SyslinkMemMgr_create (params);
GT_assert (curTrace, (cargs.args.create.handle != NULL));
Memory_free (NULL, params, size);
}
}
break;
case CMD_MEMMGR_DELETE:
{
status = SyslinkMemMgr_delete (&cargs.args.deleteInstance.handle);
GT_assert (curTrace, (status >= 0));
}
break;
/* params init for ShMem implementation */
case CMD_MEMMGR_SHAREDMEM_PARAMS_INIT :
{
SyslinkMemMgr_SharedMemory_Params params;
SyslinkMemMgr_SharedMemory_Params_init(¶ms);
ret = copy_to_user (cargs.args.ParamsInit.params,
¶ms,
sizeof (SyslinkMemMgr_SharedMemory_Params));
GT_assert (curTrace, (ret == 0));
#if !defined(SYSLINK_BUILD_OPTIMIZE)
if (ret != 0) {
GT_1trace (curTrace,
GT_1CLASS,
" SyslinkMemMgrDrv_ioctl: copy_to_user call"
" failed\n"
" status [%d]",
ret);
osStatus = -EFAULT;
}
#endif /* !defined(SYSLINK_BUILD_OPTIMIZE) */
}
break;
default:
{
/* This does not impact return status of this function, so retVal
* comment is not used.
*/
status = MEMMGR_E_INVALIDARG;
GT_setFailureReason (curTrace,
GT_4CLASS,
"SyslinkMemMgrDrv_ioctl",
status,
"Unsupported ioctl command specified");
}
break;
}
cargs.apiStatus = status;
/* Copy the full args to the user-side. */
ret = copy_to_user (dstArgs,
&cargs,
sizeof (SyslinkMemMgrDrv_CmdArgs));
GT_assert (curTrace, (ret == 0));
GT_1trace (curTrace, GT_LEAVE, "SyslinkMemMgrDrv_ioctl", osStatus);
/*! @retval 0 Operation successfully completed. */
return osStatus;
}
