drm/amdgpu: provide a generic function interface for reading/writing register by KIQ

Move amdgpu_virt_kiq_rreg/amdgpu_virt_kiq_wreg function to amdgpu_gfx.c,
and rename them to amdgpu_kiq_rreg/amdgpu_kiq_wreg.Make it generic and
flexible.

Signed-off-by: chen gong <curry.gong@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 0 insertions, 92 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 103033f96f13..adc813cde8e2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -45,98 +45,6 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
 	adev->pg_flags = 0;
 }
 
-uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
-{
-	signed long r, cnt = 0;
-	unsigned long flags;
-	uint32_t seq;
-	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
-	struct amdgpu_ring *ring = &kiq->ring;
-
-	BUG_ON(!ring->funcs->emit_rreg);
-
-	spin_lock_irqsave(&kiq->ring_lock, flags);
-	amdgpu_ring_alloc(ring, 32);
-	amdgpu_ring_emit_rreg(ring, reg);
-	amdgpu_fence_emit_polling(ring, &seq);
-	amdgpu_ring_commit(ring);
-	spin_unlock_irqrestore(&kiq->ring_lock, flags);
-
-	r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
-
-	/* don't wait anymore for gpu reset case because this way may
-	 * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
-	 * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
-	 * never return if we keep waiting in virt_kiq_rreg, which cause
-	 * gpu_recover() hang there.
-	 *
-	 * also don't wait anymore for IRQ context
-	 * */
-	if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
-		goto failed_kiq_read;
-
-	might_sleep();
-	while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
-		msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
-		r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
-	}
-
-	if (cnt > MAX_KIQ_REG_TRY)
-		goto failed_kiq_read;
-
-	return adev->wb.wb[adev->virt.reg_val_offs];
-
-failed_kiq_read:
-	pr_err("failed to read reg:%x\n", reg);
-	return ~0;
-}
-
-void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
-{
-	signed long r, cnt = 0;
-	unsigned long flags;
-	uint32_t seq;
-	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
-	struct amdgpu_ring *ring = &kiq->ring;
-
-	BUG_ON(!ring->funcs->emit_wreg);
-
-	spin_lock_irqsave(&kiq->ring_lock, flags);
-	amdgpu_ring_alloc(ring, 32);
-	amdgpu_ring_emit_wreg(ring, reg, v);
-	amdgpu_fence_emit_polling(ring, &seq);
-	amdgpu_ring_commit(ring);
-	spin_unlock_irqrestore(&kiq->ring_lock, flags);
-
-	r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
-
-	/* don't wait anymore for gpu reset case because this way may
-	 * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
-	 * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
-	 * never return if we keep waiting in virt_kiq_rreg, which cause
-	 * gpu_recover() hang there.
-	 *
-	 * also don't wait anymore for IRQ context
-	 * */
-	if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
-		goto failed_kiq_write;
-
-	might_sleep();
-	while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
-
-		msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
-		r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
-	}
-
-	if (cnt > MAX_KIQ_REG_TRY)
-		goto failed_kiq_write;
-
-	return;
-
-failed_kiq_write:
-	pr_err("failed to write reg:%x\n", reg);
-}
-
 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 					uint32_t reg0, uint32_t reg1,
 					uint32_t ref, uint32_t mask)