GTIMR
intel_uncore_write(gt->uncore, GTIMR, gt->gt_imr);
intel_uncore_posting_read_fw(gt->uncore, GTIMR);
#define GT_IRQ_REGS I915_IRQ_REGS(GTIMR, \
s->gt_imr = intel_uncore_read(uncore, GTIMR);
intel_uncore_write(uncore, GTIMR, s->gt_imr);