static int
xhwicap_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct xhwicap_instance *inst;
XStatus status;
/* FIXME! Assume instance is first in list - this is bogus */
inst = inst_list;
if(!inst)
return -ENODEV;
switch (cmd) {
case XHWICAP_IOCCMDDESYNC:
DBPRINTK("desynch()\n");
status = XHwIcap_CommandDesync(&(inst->HwIcap));
if(status==XST_DEVICE_BUSY)
return -EBUSY;
break;
case XHWICAP_IOCCMDCAPTURE:
DBPRINTK("capture()\n");
status = XHwIcap_CommandCapture(&(inst->HwIcap));
if(status==XST_DEVICE_BUSY)
return -EBUSY;
break;
case XHWICAP_IOCGETINST:
DBPRINTK("getinst()\n");
copy_to_user((void *)arg, (void *)(&(inst->HwIcap)), sizeof(XHwIcap));
default:
return -ENOIOCTLCMD;
}
return 0;
}
/**
*
* This function does a test on the BRAM FF as an example.
*
* @param DeviceId is the XPAR_<HWICAP_INSTANCE>_DEVICE_ID value from
* xparameters.h
*
* @return XST_SUCCESS if successful, otherwise XST_FAILURE
*
* @note None
*
****************************************************************************/
int HwIcapBramFfExample(u16 DeviceId)
{
u32 SrMode=0;
int Status;
u32 Row;
u32 Col;
u32 Slice;
u32 Loop;
u32 Value;
u8 Contents[1];
XHwIcap_Config *CfgPtr;
/*
* Initialize the HwIcap instance.
*/
CfgPtr = XHwIcap_LookupConfig(DeviceId);
if (CfgPtr == NULL) {
return XST_FAILURE;
}
Status = XHwIcap_CfgInitialize(&HwIcap, CfgPtr, CfgPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Identify the FF to change: FFX in SLICE_X0Y0.
*/
Col = XHwIcap_SliceX2Col(HWICAP_EXAMPLE_TEST_COL);
Row = XHwIcap_SliceY2Row(&HwIcap, HWICAP_EXAMPLE_TEST_ROW);
Slice = XHwIcap_SliceXY2Slice(HWICAP_EXAMPLE_TEST_COL,
HWICAP_EXAMPLE_TEST_ROW);
printf("Setting the SRMODE -> SRHIGH. \r\n");
Status = XHwIcap_SetClbBits(&HwIcap, Row, Col,
XHI_CLB_FF.SRMODE[Slice][XHI_CLB_XQ], XHI_CLB_FF.SRHIGH, 1);
if (Status != XST_SUCCESS) {
printf("Failed to Set SRMODE->SRHIGH: %d \r\n", Status);
return XST_FAILURE;
}
printf("Setting the SRMODE -> SRLOW. \r\n");
Status = XHwIcap_SetClbBits(&HwIcap, Row, Col,
XHI_CLB_FF.SRMODE[Slice][XHI_CLB_XQ], XHI_CLB_FF.SRLOW, 1);
if (Status != XST_SUCCESS) {
printf("Failed to Set SRMODE->SRLOW: %d \r\n", Status);
return XST_FAILURE;
}
printf("Set SRINV to SR \r\n");
Status = XHwIcap_SetClbBits(&HwIcap, Row, Col,
XHI_CLB_SRINV.RES[Slice], XHI_CLB_SRINV.SR, 1);
if (Status != XST_SUCCESS) {
printf("Failed to Set SRINV->SR: %d \r\n", Status);
return XST_FAILURE;
}
/*
* Set it back
*/
printf("Set SRINV to SR_B \r\n");
Status = XHwIcap_SetClbBits(&HwIcap, Row, Col,
XHI_CLB_SRINV.RES[Slice], XHI_CLB_SRINV.SR_B, 1);
if (Status != XST_SUCCESS) {
printf("Failed to Set SRINV->SR_B: %d \r\n", Status);
return XST_FAILURE;
}
/*
* Capture the FF states. If the CAPTURE block is instantiated in
* the design then the XHwIcap_CommandCapture() is not necessary.
*/
printf("Capture the FF state. \r\n");
Status = XHwIcap_CommandCapture(&HwIcap);
if (Status != XST_SUCCESS) {
printf("Failed to capture FF states: %d \r\n", Status);
return XST_FAILURE;
}
/*
* Read the FF Contents
*/
Status = XHwIcap_GetClbBits(&HwIcap, Row, Col,
XHI_CLB_FF.CONTENTS[Slice][XHI_CLB_XQ],
Contents, 1);
if (Status != XST_SUCCESS) {
printf("Failed to Get FF Contents: %d \r\n", Status);
return XST_FAILURE;
}
/*
* The readback value of the FF is inverted from its true value.
*/
Value = ~Contents[0] & 0x1;
printf("FF Contents: %d \r\n", Value);
printf("HwicapBramFFExample Passed Successfully ... \r\n\r\n");
return XST_SUCCESS;
}
