[PATCH] drm/amdkfd: enable heavy-weight TLB flush on Arcturus

[Eric Huang]

SDMA FW fixes the hang issue for adding heavy-weight TLB
flush on Arcturus, so we can enable it.

Signed-off-by: Eric Huang <jinhuieric.huang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c |  6 ------
 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c         | 10 ++++++++--
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index a64cbbd943ba..acb4fd973e60 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -1892,12 +1892,6 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 				true);
 	ret = unreserve_bo_and_vms(&ctx, false, false);
 
-	/* Only apply no TLB flush on Aldebaran to
-	 * workaround regressions on other Asics.
-	 */
-	if (table_freed && (adev->asic_type != CHIP_ALDEBARAN))
-		*table_freed = true;
-
 	goto out;
 
 out_unreserve:
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index b570c0454ce9..485d4c52c7de 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1596,6 +1596,12 @@ static int kfd_ioctl_free_memory_of_gpu(struct file *filep,
 	return ret;
 }
 
+static bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev) {
+	return KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2) ||
+	       (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) &&
+	        dev->adev->sdma.instance[0].fw_version >= 18);
+}
+
 static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
 					struct kfd_process *p, void *data)
 {
@@ -1692,7 +1698,7 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
 	}
 
 	/* Flush TLBs after waiting for the page table updates to complete */
-	if (table_freed) {
+	if (table_freed || !kfd_flush_tlb_after_unmap(dev)) {
 		for (i = 0; i < args->n_devices; i++) {
 			peer = kfd_device_by_id(devices_arr[i]);
 			if (WARN_ON_ONCE(!peer))
@@ -1806,7 +1812,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
 	}
 	mutex_unlock(&p->mutex);
 
-	if (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2)) {
+	if (kfd_flush_tlb_after_unmap(dev)) {
 		err = amdgpu_amdkfd_gpuvm_sync_memory(dev->adev,
 				(struct kgd_mem *) mem, true);
 		if (err) {
-- 
2.25.1