/**
* Find IO port range for the parallel port and return the lower address.
*
* @returns parallel port IO address.
* @param DevInst Device Instance for parallel port.
*/
static uint32_t drvHostWinFindIORangeResource(const DEVINST DevInst)
{
uint8_t *pBuf = NULL;
short wHeaderSize;
uint32_t u32Size;
CONFIGRET cmRet;
LOG_CONF firstLogConf;
LOG_CONF nextLogConf;
RES_DES rdPrevResDes;
uint32_t u32ParportAddr = 0;
wHeaderSize = sizeof(IO_DES);
cmRet = CM_Get_First_Log_Conf(&firstLogConf, DevInst, ALLOC_LOG_CONF);
if (cmRet != CR_SUCCESS)
{
cmRet = CM_Get_First_Log_Conf(&firstLogConf, DevInst, BOOT_LOG_CONF);
if (cmRet != CR_SUCCESS)
return 0;
}
cmRet = CM_Get_Next_Res_Des(&nextLogConf, firstLogConf, 2, 0L, 0L);
if (cmRet != CR_SUCCESS)
{
CM_Free_Res_Des_Handle(firstLogConf);
return 0;
}
/* This loop is based on the fact that only one resourece is assigned to
* the LPT port. If multiple resources (address range) are assigned to
* to LPT port, it will pick and return the last one
*/
for (;;)
{
u32Size = 0;
cmRet = CM_Get_Res_Des_Data_Size((PULONG)(&u32Size), nextLogConf, 0L);
if (cmRet != CR_SUCCESS)
{
LogFlowFunc(("Failed to get Size \n"));
CM_Free_Res_Des_Handle(nextLogConf);
break;
}
pBuf = (uint8_t *)RTMemAlloc(u32Size + 1);
if (!pBuf)
{
LogFlowFunc(("Failed to get Buf %d\n", u32Size));
CM_Free_Res_Des_Handle(nextLogConf);
break;
}
cmRet = CM_Get_Res_Des_Data(nextLogConf, pBuf, u32Size, 0L);
if (cmRet != CR_SUCCESS)
{
LogFlowFunc(("Failed to get Des Data \n"));
CM_Free_Res_Des_Handle(nextLogConf);
if (pBuf)
RTMemFree(pBuf);
break;
}
LogFlowFunc(("call GetIOResource\n"));
if (pBuf)
u32ParportAddr = ((IO_DES *)pBuf)->IOD_Alloc_Base;
LogFlowFunc(("called GetIOResource, ret=%#x\n", u32ParportAddr));
rdPrevResDes = 0;
cmRet = CM_Get_Next_Res_Des(&rdPrevResDes,
nextLogConf,
2,
0L,
0L);
if (pBuf)
RTMemFree(pBuf);
if (cmRet != CR_SUCCESS)
break;
CM_Free_Res_Des_Handle(nextLogConf);
nextLogConf = rdPrevResDes;
}
CM_Free_Res_Des_Handle(nextLogConf);
LogFlowFunc(("return u32ParportAddr=%#x", u32ParportAddr));
return u32ParportAddr;
}
/**
* Find IO port range for the parallel port and return the lower address.
*
* @returns parallel port IO address.
* @param DevInst Device Instance for parallel port.
*/
static uint32_t drvHostWinFindIORangeResource(const DEVINST DevInst)
{
uint8_t *pBuf = NULL;
short wHeaderSize;
uint32_t u32Size;
CONFIGRET cmRet;
LOG_CONF firstLogConf;
LOG_CONF nextLogConf;
RES_DES rdPrevResDes;
uint32_t u32ParportAddr;
wHeaderSize = sizeof(IO_DES);
cmRet = CM_Get_First_Log_Conf(&firstLogConf, DevInst, ALLOC_LOG_CONF);
if (cmRet != CR_SUCCESS)
{
cmRet = CM_Get_First_Log_Conf(&firstLogConf, DevInst, BOOT_LOG_CONF);
if (cmRet != CR_SUCCESS)
return 0;
}
cmRet = CM_Get_Next_Res_Des(&nextLogConf, firstLogConf, 2, 0L, 0L);
if (cmRet != CR_SUCCESS)
{
CM_Free_Res_Des_Handle(firstLogConf);
return 0;
}
for (;;)
{
u32Size = 0;
cmRet = CM_Get_Res_Des_Data_Size((PULONG)(&u32Size), nextLogConf, 0L);
if (cmRet != CR_SUCCESS)
{
CM_Free_Res_Des_Handle(nextLogConf); /** @todo r=bird: Why are you doing this twice in this code path? */
break;
}
pBuf = (uint8_t *)RTMemAlloc(u32Size + 1);
if (!pBuf)
{
CM_Free_Res_Des_Handle(nextLogConf); /** @todo r=bird: Ditto above. */
break;
}
cmRet = CM_Get_Res_Des_Data(nextLogConf, pBuf, u32Size, 0L);
if (cmRet != CR_SUCCESS)
{
CM_Free_Res_Des_Handle(nextLogConf);
RTMemFree(pBuf);
break;
}
LogFlowFunc(("call GetIOResource\n"));
u32ParportAddr = ((IO_DES *)pBuf)->IOD_Alloc_Base;
LogFlowFunc(("called GetIOResource, ret=%#x\n", u32ParportAddr));
rdPrevResDes = 0;
cmRet = CM_Get_Next_Res_Des(&rdPrevResDes,
nextLogConf,
2,
0L,
0L);
RTMemFree(pBuf);
if (cmRet != CR_SUCCESS)
break;
CM_Free_Res_Des_Handle(nextLogConf);
nextLogConf = rdPrevResDes;
}
CM_Free_Res_Des_Handle(nextLogConf);
LogFlowFunc(("return u32ParportAddr=%#x", u32ParportAddr));
return u32ParportAddr;
}
