mmCP_RB0_WPTR
WREG32(mmCP_RB0_WPTR, lower_32_bits(ring->wptr));
return RREG32(mmCP_RB0_WPTR);
WREG32(mmCP_RB0_WPTR, lower_32_bits(ring->wptr));
(void)RREG32(mmCP_RB0_WPTR);
WREG32(mmCP_RB0_WPTR, lower_32_bits(ring->wptr));
return RREG32(mmCP_RB0_WPTR);
WREG32(mmCP_RB0_WPTR, lower_32_bits(ring->wptr));
(void)RREG32(mmCP_RB0_WPTR);
WREG32_SOC15(GC, 0, mmCP_RB0_WPTR, lower_32_bits(ring->wptr));
wptr = RREG32_SOC15(GC, 0, mmCP_RB0_WPTR);
WREG32_SOC15(GC, 0, mmCP_RB0_WPTR, lower_32_bits(ring->wptr));