1 // SPDX-License-Identifier: MIT
3 * Copyright © 2019 Intel Corporation
9 #include "intel_gt_irq.h"
10 #include "intel_gt_pm_irq.h"
12 static void write_pm_imr(struct intel_gt *gt)
14 struct drm_i915_private *i915 = gt->i915;
15 struct intel_uncore *uncore = gt->uncore;
16 u32 mask = gt->pm_imr;
19 if (GRAPHICS_VER(i915) >= 11) {
20 reg = GEN11_GPM_WGBOXPERF_INTR_MASK;
21 mask <<= 16; /* pm is in upper half */
22 } else if (GRAPHICS_VER(i915) >= 8) {
28 intel_uncore_write(uncore, reg, mask);
31 static void gen6_gt_pm_update_irq(struct intel_gt *gt,
37 WARN_ON(enabled_irq_mask & ~interrupt_mask);
39 lockdep_assert_held(>->irq_lock);
42 new_val &= ~interrupt_mask;
43 new_val |= ~enabled_irq_mask & interrupt_mask;
45 if (new_val != gt->pm_imr) {
51 void gen6_gt_pm_unmask_irq(struct intel_gt *gt, u32 mask)
53 gen6_gt_pm_update_irq(gt, mask, mask);
56 void gen6_gt_pm_mask_irq(struct intel_gt *gt, u32 mask)
58 gen6_gt_pm_update_irq(gt, mask, 0);
61 void gen6_gt_pm_reset_iir(struct intel_gt *gt, u32 reset_mask)
63 struct intel_uncore *uncore = gt->uncore;
64 i915_reg_t reg = GRAPHICS_VER(gt->i915) >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
66 lockdep_assert_held(>->irq_lock);
68 intel_uncore_write(uncore, reg, reset_mask);
69 intel_uncore_write(uncore, reg, reset_mask);
70 intel_uncore_posting_read(uncore, reg);
73 static void write_pm_ier(struct intel_gt *gt)
75 struct drm_i915_private *i915 = gt->i915;
76 struct intel_uncore *uncore = gt->uncore;
77 u32 mask = gt->pm_ier;
80 if (GRAPHICS_VER(i915) >= 11) {
81 reg = GEN11_GPM_WGBOXPERF_INTR_ENABLE;
82 mask <<= 16; /* pm is in upper half */
83 } else if (GRAPHICS_VER(i915) >= 8) {
89 intel_uncore_write(uncore, reg, mask);
92 void gen6_gt_pm_enable_irq(struct intel_gt *gt, u32 enable_mask)
94 lockdep_assert_held(>->irq_lock);
96 gt->pm_ier |= enable_mask;
98 gen6_gt_pm_unmask_irq(gt, enable_mask);
101 void gen6_gt_pm_disable_irq(struct intel_gt *gt, u32 disable_mask)
103 lockdep_assert_held(>->irq_lock);
105 gt->pm_ier &= ~disable_mask;
106 gen6_gt_pm_mask_irq(gt, disable_mask);