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/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "i915_drv.h"
#include "i915_reg.h"
#include "intel_gt.h"
#include "intel_gt_irq.h"
#include "intel_gt_pm_irq.h"
static void write_pm_imr(struct intel_gt *gt)
{
struct drm_i915_private *i915 = gt->i915;
struct intel_uncore *uncore = gt->uncore;
u32 mask = gt->pm_imr;
i915_reg_t reg;
if (INTEL_GEN(i915) >= 11) {
reg = GEN11_GPM_WGBOXPERF_INTR_MASK;
mask <<= 16; /* pm is in upper half */
} else if (INTEL_GEN(i915) >= 8) {
reg = GEN8_GT_IMR(2);
} else {
reg = GEN6_PMIMR;
}
intel_uncore_write(uncore, reg, mask);
}
static void gen6_gt_pm_update_irq(struct intel_gt *gt,
u32 interrupt_mask,
u32 enabled_irq_mask)
{
u32 new_val;
WARN_ON(enabled_irq_mask & ~interrupt_mask);
lockdep_assert_held(>->irq_lock);
new_val = gt->pm_imr;
new_val &= ~interrupt_mask;
new_val |= ~enabled_irq_mask & interrupt_mask;
if (new_val != gt->pm_imr) {
gt->pm_imr = new_val;
write_pm_imr(gt);
}
}
void gen6_gt_pm_unmask_irq(struct intel_gt *gt, u32 mask)
{
gen6_gt_pm_update_irq(gt, mask, mask);
}
void gen6_gt_pm_mask_irq(struct intel_gt *gt, u32 mask)
{
gen6_gt_pm_update_irq(gt, mask, 0);
}
void gen6_gt_pm_reset_iir(struct intel_gt *gt, u32 reset_mask)
{
struct intel_uncore *uncore = gt->uncore;
i915_reg_t reg = INTEL_GEN(gt->i915) >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
lockdep_assert_held(>->irq_lock);
intel_uncore_write(uncore, reg, reset_mask);
intel_uncore_write(uncore, reg, reset_mask);
intel_uncore_posting_read(uncore, reg);
}
static void write_pm_ier(struct intel_gt *gt)
{
struct drm_i915_private *i915 = gt->i915;
struct intel_uncore *uncore = gt->uncore;
u32 mask = gt->pm_ier;
i915_reg_t reg;
if (INTEL_GEN(i915) >= 11) {
reg = GEN11_GPM_WGBOXPERF_INTR_ENABLE;
mask <<= 16; /* pm is in upper half */
} else if (INTEL_GEN(i915) >= 8) {
reg = GEN8_GT_IER(2);
} else {
reg = GEN6_PMIER;
}
intel_uncore_write(uncore, reg, mask);
}
void gen6_gt_pm_enable_irq(struct intel_gt *gt, u32 enable_mask)
{
lockdep_assert_held(>->irq_lock);
gt->pm_ier |= enable_mask;
write_pm_ier(gt);
gen6_gt_pm_unmask_irq(gt, enable_mask);
}
void gen6_gt_pm_disable_irq(struct intel_gt *gt, u32 disable_mask)
{
lockdep_assert_held(>->irq_lock);
gt->pm_ier &= ~disable_mask;
gen6_gt_pm_mask_irq(gt, disable_mask);
write_pm_ier(gt);
}
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