I2C FIFO interrupt doesn't work

I can't make my code run into I2C ISR. Whats' wrong?

#include <DSP2833x_Device.h>

#pragma INTERRUPT()
void
i2c_isr()
{
    I2caRegs.I2CFFTX.bit.TXFFINTCLR = 1;
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP8;
}

int
main()
{
    EALLOW; // enable access to protected registers

    SysCtrlRegs.WDCR = BIT6 | BIT5 | BIT3; // disable watchdog

    SysCtrlRegs.PCLKCR0.bit.I2CAENCLK = 1; // enable clock to I2CA module

    // setup FIFO
    I2caRegs.I2CFFTX.bit.I2CFFEN = 1; // enable FIFO
    I2caRegs.I2CFFTX.bit.TXFFRST = 1; // enable transmitter FIFO
    I2caRegs.I2CFFRX.bit.RXFFRST = 1; // enable receiver FIFO

    I2caRegs.I2CMDR.bit.IRS = 1; // enable module

    PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // enable PIE controller for interrupts
    // set function for interrupts
    PieVectTable.I2CINT1A = (PINT)&i2c_isr;
    PieCtrlRegs.PIEIER8.bit.INTx1 = 1;
 
    IER |= M_INT8;
    EINT;
   
    EDIS; // disable access to protected registers
   
    I2caRegs.I2CFFTX.bit.TXFFIENA = 1;
   
    while(true);
}