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From 429c473e48630eaf7d551a94802ce7f1265af352 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Thu, 25 Oct 2018 10:49:07 +0200
Subject: [PATCH 1875/2940] drm/amdgpu: cleanup GMC v9 TLB invalidation
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Move the kiq handling into amdgpu_virt.c and drop the fallback.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 40 ++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 3 ++
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 53 +++---------------------
3 files changed, 49 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index a1b49bab4588..7d484fad3909 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -133,6 +133,46 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
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)
+{
+ struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+ struct amdgpu_ring *ring = &kiq->ring;
+ signed long r, cnt = 0;
+ unsigned long flags;
+ uint32_t seq;
+
+ spin_lock_irqsave(&kiq->ring_lock, flags);
+ amdgpu_ring_alloc(ring, 32);
+ amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
+ ref, mask);
+ 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 IRQ context */
+ if (r < 1 && in_interrupt())
+ goto failed_kiq;
+
+ 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;
+
+ return;
+
+failed_kiq:
+ pr_err("failed to write reg %x wait reg %x\n", reg0, reg1);
+}
+
/**
* amdgpu_virt_request_full_gpu() - request full gpu access
* @amdgpu: amdgpu device.
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index d87c98b9263c..584947b7ccf3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -291,6 +291,9 @@ bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev);
void amdgpu_virt_init_setting(struct amdgpu_device *adev);
uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
+void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
+ uint32_t reg0, uint32_t rreg1,
+ uint32_t ref, uint32_t mask);
int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 842ab8a1fbd1..af3d0bb07eb8 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -392,48 +392,6 @@ static uint32_t gmc_v9_0_get_invalidate_req(unsigned int vmid,
return req;
}
-static signed long amdgpu_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
- uint32_t reg0, uint32_t reg1,
- uint32_t ref, uint32_t mask)
-{
- signed long r, cnt = 0;
- unsigned long flags;
- uint32_t seq;
- struct amdgpu_kiq *kiq = &adev->gfx.kiq;
- struct amdgpu_ring *ring = &kiq->ring;
-
- spin_lock_irqsave(&kiq->ring_lock, flags);
-
- amdgpu_ring_alloc(ring, 32);
- amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
- ref, mask);
- 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 IRQ context */
- if (r < 1 && in_interrupt())
- goto failed_kiq;
-
- 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;
-
- return 0;
-
-failed_kiq:
- pr_err("failed to invalidate tlb with kiq\n");
- return r;
-}
-
/*
* GART
* VMID 0 is the physical GPU addresses as used by the kernel.
@@ -455,7 +413,6 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev,
{
const unsigned eng = 17;
unsigned i, j;
- int r;
for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
struct amdgpu_vmhub *hub = &adev->vmhub[i];
@@ -464,10 +421,12 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev,
if (adev->gfx.kiq.ring.sched.ready &&
(amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev)) &&
!adev->in_gpu_reset) {
- r = amdgpu_kiq_reg_write_reg_wait(adev, hub->vm_inv_eng0_req + eng,
- hub->vm_inv_eng0_ack + eng, tmp, 1 << vmid);
- if (!r)
- continue;
+ uint32_t req = hub->vm_inv_eng0_req + eng;
+ uint32_t ack = hub->vm_inv_eng0_ack + eng;
+
+ amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, tmp,
+ 1 << vmid);
+ continue;
}
spin_lock(&adev->gmc.invalidate_lock);
--
2.17.1
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