Other Parts Discussed in Thread: SYSBIOS
Hi,
My issue is related to PCIe Legacy INTA configuration.
Setup :
I am using the DSP as a RC and FPGA as an EP device.
The wiki page "Configuring interupts on keystone devices" states that there is two ways to go about doing that, the first being through CSL-API or SYS/BIOS.
Using the CSL approuch i could successfully activate the Legacy INTA and will call my ISR function when an interrupt occurs. But on the otherhand all configured created clocks using SYS/BIOS that call functions periodically and tasks stopped working.
I have read in one thread that one should not use both SYS/BIOS and CSL API simultaneously , so i tried using the SYS/BIOS approach , but for some reason my ISR is never being called.
CSL-API approach:
DEVICE_REG32_W(PCIE_LEGACY_A_IRQ_STATUS, 0x1); // clear status
intcContext.eventhandlerRecord = EventHandler;
intcContext.numEvtEntries = 2;
CSL_intcInit(&intcContext);
if (CSL_intcInit(&intcContext) != CSL_SOK)
{
printf("Error: GEM-INTC initialization failed n\r");
}
/* Enable NMIs */
if ( CSL_intcGlobalNmiEnable() != CSL_SOK)
{
printf("Error: GEM-INTC global NMI enable failed n\r");
}
/* Enable global interrupts */
if ( CSL_intcGlobalEnable(&state) != CSL_SOK)
{
printf("Error: GEM-INTC global enable failed \n\r");
}
vectId=CSL_INTC_VECTID_4;
int eventId = 25;
hTest = CSL_intcOpen (&intcObj, eventId, &vectId, NULL);
if (hTest == NULL)
{
printf("Error: GEM-INTC Open failed\n\r");
}
/* Register an call-back handler which is invoked when the event occurs. */
EventRecord.handler = &test_isr_handler;
EventRecord.arg = (void *)eventId;
if (CSL_intcPlugEventHandler(hTest, &EventRecord) != CSL_SOK)
{
printf("Error: GEM-INTC Plug event handler failed\n\r");
}
/* Clear the event in case it is pending */
if (CSL_intcHwControl(hTest, CSL_INTC_CMD_EVTCLEAR, NULL)!= CSL_SOK)
{
printf("Error: clearing pending event failed\n\r");
}
/* Enable event */
if (CSL_intcHwControl(hTest, CSL_INTC_CMD_EVTENABLE, NULL)!= CSL_SOK)
{
printf("Error: GEM-INTC CSL_INTC_CMD_EVTENABLE command failed\n\r");
}
/*** --- CIC Initializations --- ***/
hnd = CSL_CPINTC_open(0);
if (hnd == 0)
{
printf("Error: Unable to open CPINTC-0\n\r");
}
CSL_CPINTC_disableAllHostInterrupt(hnd);
CSL_CPINTC_setNestingMode (hnd, CPINTC_NO_NESTING);
CSL_CPINTC_clearSysInterrupt (hnd, 50);
CSL_CPINTC_enableSysInterrupt (hnd, 50);
CSL_CPINTC_mapSystemIntrToChannel (hnd, 50, 3);
CSL_CPINTC_enableHostInterrupt (hnd, 3);
CSL_CPINTC_enableAllHostInterrupt(hnd);
LEGACY_A_IRQ_ENABLE_SET=0x1;
static void test_isr_handler(void* handle)
{
counter++;
CSL_CPINTC_disableHostInterrupt (hnd, 3);
/* clear PCIE interrupt */
DEVICE_REG32_W(PCIE_LEGACY_A_IRQ_STATUS, 0x1);
DEVICE_REG32_W(PCIE_IRQ_EOI, 0x0);
CSL_CPINTC_clearSysInterrupt (hnd, 50);
/* Enable host interrupt */
CSL_CPINTC_enableHostInterrupt (hnd, 3);
printf("INT CNT %d \n",counter);
}
SYS/BIOS approach:
DEVICE_REG32_W(PCIE_LEGACY_A_IRQ_STATUS, 0x1);
//Map secondary inputs to the Core event
CpIntc_mapSysIntToHostInt(0, 50, 3);
CpIntc_dispatchPlug(50,(CpIntc_FuncPtr)test_isr2_handler, 50, TRUE);
CpIntc_enableHostInt(0, 3);
CpIntc_enableSysInt(0, 50);
int eventId = CpIntc_getEventId(3);
Hwi_Params hwi0Params;
Hwi_Params_init(&hwi0Params);
hwi0Params.arg = 3;
hwi0Params.eventId = eventId;
hwi0Params.enableInt = TRUE;
Hwi_create(4,&CpIntc_dispatch, &hwi0Params, NULL);
Hwi_enableInterrupt(4);
Hwi_enable();
LEGACY_A_IRQ_ENABLE_SET=0x1;
static void test_isr2_handler(void* handle)
{
counter++;
CpIntc_disableHostInt(0, 3);
/* clear PCIE interrupt */
DEVICE_REG32_W(PCIE_LEGACY_A_IRQ_STATUS, 0x1);
DEVICE_REG32_W(PCIE_IRQ_EOI, 0x0);
CpIntc_clearSysInt(0, 50);
/* Enable host interrupt */
CpIntc_enableHostInt(0, 3);
printf("INT CNT %d \n",counter);
}
Questions:
1) Can I configure different components using both CSL -API and SYS/BIOS simultateously?
2) What can be the reason why using CSL approach for configuring legacy INTA works but not with SYS/BIOS approach ? Am i missing something ?
N.B i am using the link " processors.wiki.ti.com/.../Configuring_Interrupts_on_Keystone_Devices" as my reference.
3) In the. cfg file i have only the following defined var CpIntc = xdc.useModule('ti.sysbios.family.c66.tci66xx.CpIntc') do I need to add something else?
Best Regards,
Hisham
