[PATCH] drm/amdgpu: move kiq_reg_write_reg_wait() out of amdgpu_virt.c
Alex Deucher
alexander.deucher at amd.com
Mon Jan 8 21:38:11 UTC 2024
It's used for more than just SR-IOV now, so move it to
amdgpu_gmc.c and rename it to better match the functionality and
update the comments in the code paths to better document
when each path is used and why. No functional change.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: Shaoyun.Liu at amd.com
Cc: Christian.Koenig at amd.com
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 53 ++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 4 ++
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 53 ------------------------
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 4 --
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 9 ++--
drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 9 ++--
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 12 +++---
7 files changed, 74 insertions(+), 70 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index d2f273d77e59..331cf6384b12 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -746,6 +746,59 @@ int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid,
return r;
}
+void amdgpu_gmc_fw_reg_write_reg_wait(struct amdgpu_device *adev,
+ uint32_t reg0, uint32_t reg1,
+ uint32_t ref, uint32_t mask,
+ uint32_t xcc_inst)
+{
+ struct amdgpu_kiq *kiq = &adev->gfx.kiq[xcc_inst];
+ struct amdgpu_ring *ring = &kiq->ring;
+ signed long r, cnt = 0;
+ unsigned long flags;
+ uint32_t seq;
+
+ if (adev->mes.ring.sched.ready) {
+ amdgpu_mes_reg_write_reg_wait(adev, reg0, reg1,
+ ref, mask);
+ return;
+ }
+
+ spin_lock_irqsave(&kiq->ring_lock, flags);
+ amdgpu_ring_alloc(ring, 32);
+ amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
+ ref, mask);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r)
+ goto failed_undo;
+
+ 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_undo:
+ amdgpu_ring_undo(ring);
+ spin_unlock_irqrestore(&kiq->ring_lock, flags);
+failed_kiq:
+ dev_err(adev->dev, "failed to write reg %x wait reg %x\n", reg0, reg1);
+}
+
/**
* amdgpu_gmc_tmz_set -- check and set if a device supports TMZ
* @adev: amdgpu_device pointer
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
index e699d1ca8deb..17f40ea1104b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
@@ -417,6 +417,10 @@ void amdgpu_gmc_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid,
uint32_t flush_type, bool all_hub,
uint32_t inst);
+void amdgpu_gmc_fw_reg_write_reg_wait(struct amdgpu_device *adev,
+ uint32_t reg0, uint32_t reg1,
+ uint32_t ref, uint32_t mask,
+ uint32_t xcc_inst);
extern void amdgpu_gmc_tmz_set(struct amdgpu_device *adev);
extern void amdgpu_gmc_noretry_set(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 0dcff2889e25..f5c66e0038b5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -71,59 +71,6 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
amdgpu_num_kcq = 2;
}
-void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
- uint32_t reg0, uint32_t reg1,
- uint32_t ref, uint32_t mask,
- uint32_t xcc_inst)
-{
- struct amdgpu_kiq *kiq = &adev->gfx.kiq[xcc_inst];
- struct amdgpu_ring *ring = &kiq->ring;
- signed long r, cnt = 0;
- unsigned long flags;
- uint32_t seq;
-
- if (adev->mes.ring.sched.ready) {
- amdgpu_mes_reg_write_reg_wait(adev, reg0, reg1,
- ref, mask);
- return;
- }
-
- spin_lock_irqsave(&kiq->ring_lock, flags);
- amdgpu_ring_alloc(ring, 32);
- amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
- ref, mask);
- r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
- if (r)
- goto failed_undo;
-
- 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_undo:
- amdgpu_ring_undo(ring);
- spin_unlock_irqrestore(&kiq->ring_lock, flags);
-failed_kiq:
- dev_err(adev->dev, "failed to write reg %x wait reg %x\n", reg0, reg1);
-}
-
/**
* amdgpu_virt_request_full_gpu() - request full gpu access
* @adev: amdgpu device.
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index d4207e44141f..1b49c007ff62 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -332,10 +332,6 @@ static inline bool is_virtual_machine(void)
((adev)->virt.gim_feature & AMDGIM_FEATURE_VCN_RB_DECOUPLE)
bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev);
void amdgpu_virt_init_setting(struct amdgpu_device *adev);
-void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
- uint32_t reg0, uint32_t rreg1,
- uint32_t ref, uint32_t mask,
- uint32_t xcc_inst);
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_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 6c5185608854..db89d13bd80d 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -262,16 +262,17 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
/* flush hdp cache */
adev->hdp.funcs->flush_hdp(adev, NULL);
- /* For SRIOV run time, driver shouldn't access the register through MMIO
- * Directly use kiq to do the vm invalidation instead
+ /* This is necessary for SRIOV as well as for GFXOFF to function
+ * properly under bare metal
*/
if (adev->gfx.kiq[0].ring.sched.ready && !adev->enable_mes &&
(amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev))) {
- amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
- 1 << vmid, GET_INST(GC, 0));
+ amdgpu_gmc_fw_reg_write_reg_wait(adev, req, ack, inv_req,
+ 1 << vmid, GET_INST(GC, 0));
return;
}
+ /* This path is needed before KIQ/MES/GFXOFF are set up */
hub_ip = (vmhub == AMDGPU_GFXHUB(0)) ? GC_HWIP : MMHUB_HWIP;
spin_lock(&adev->gmc.invalidate_lock);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
index c9c653cfc765..6c68135cac9f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
@@ -223,16 +223,17 @@ static void gmc_v11_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
/* flush hdp cache */
adev->hdp.funcs->flush_hdp(adev, NULL);
- /* For SRIOV run time, driver shouldn't access the register through MMIO
- * Directly use kiq to do the vm invalidation instead
+ /* This is necessary for SRIOV as well as for GFXOFF to function
+ * properly under bare metal
*/
if ((adev->gfx.kiq[0].ring.sched.ready || adev->mes.ring.sched.ready) &&
(amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev))) {
- amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
- 1 << vmid, GET_INST(GC, 0));
+ amdgpu_gmc_fw_reg_write_reg_wait(adev, req, ack, inv_req,
+ 1 << vmid, GET_INST(GC, 0));
return;
}
+ /* This path is needed before KIQ/MES/GFXOFF are set up */
hub_ip = (vmhub == AMDGPU_GFXHUB(0)) ? GC_HWIP : MMHUB_HWIP;
spin_lock(&adev->gmc.invalidate_lock);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index f9039d64ff2d..9bff72356a37 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -829,23 +829,25 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
req = hub->vm_inv_eng0_req + hub->eng_distance * eng;
ack = hub->vm_inv_eng0_ack + hub->eng_distance * eng;
- /* This is necessary for a HW workaround under SRIOV as well
- * as GFXOFF under bare metal
- */
if (vmhub >= AMDGPU_MMHUB0(0))
inst = GET_INST(GC, 0);
else
inst = vmhub;
+
+ /* This is necessary for SRIOV as well as for GFXOFF to function
+ * properly under bare metal
+ */
if (adev->gfx.kiq[inst].ring.sched.ready &&
(amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev))) {
uint32_t req = hub->vm_inv_eng0_req + hub->eng_distance * eng;
uint32_t ack = hub->vm_inv_eng0_ack + hub->eng_distance * eng;
- amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
- 1 << vmid, inst);
+ amdgpu_gmc_fw_reg_write_reg_wait(adev, req, ack, inv_req,
+ 1 << vmid, inst);
return;
}
+ /* This path is needed before KIQ/MES/GFXOFF are set up */
spin_lock(&adev->gmc.invalidate_lock);
/*
--
2.42.0
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