SBI_CTL_STAT
SBI_CTL_STAT, SBI_BUSY, 0,
I915_WRITE(SBI_CTL_STAT, value | SBI_BUSY);
SBI_CTL_STAT,
if (I915_READ(SBI_CTL_STAT) & SBI_RESPONSE_FAIL) {
SBI_CTL_STAT, SBI_BUSY, 0,
I915_WRITE(SBI_CTL_STAT, SBI_BUSY | tmp);
SBI_CTL_STAT,
if (I915_READ(SBI_CTL_STAT) & SBI_RESPONSE_FAIL) {