RING_HWSTAM
ENGINE_WRITE(engine, RING_HWSTAM, mask);
ENGINE_WRITE16(engine, RING_HWSTAM, mask);
MMIO_RING_DFH(RING_HWSTAM, D_ALL, 0, NULL, NULL);
{BCS0, RING_HWSTAM(BLT_RING_BASE), 0x0, false}, /* 0x22098 */
{BCS0, RING_HWSTAM(BLT_RING_BASE), 0x0, false}, /* 0x22098 */
MMIO_RING_D(RING_HWSTAM);