drm/amdkfd: drop IOMMUv2 support

Now that we use the dGPU path for all APUs, drop the
IOMMUv2 support.

v2: drop the now unused queue manager functions for gfx7/8 APUs

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 0 insertions, 82 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
index 8081a9408006..0f58be65132f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -31,7 +31,6 @@
 #include <linux/memory.h>
 #include "kfd_priv.h"
 #include "kfd_events.h"
-#include "kfd_iommu.h"
 #include <linux/device.h>
 
 /*
@@ -1146,87 +1145,6 @@ static void lookup_events_by_type_and_signal(struct kfd_process *p,
 	rcu_read_unlock();
 }
 
-#ifdef KFD_SUPPORT_IOMMU_V2
-void kfd_signal_iommu_event(struct kfd_node *dev, u32 pasid,
-		unsigned long address, bool is_write_requested,
-		bool is_execute_requested)
-{
-	struct kfd_hsa_memory_exception_data memory_exception_data;
-	struct vm_area_struct *vma;
-	int user_gpu_id;
-
-	/*
-	 * Because we are called from arbitrary context (workqueue) as opposed
-	 * to process context, kfd_process could attempt to exit while we are
-	 * running so the lookup function increments the process ref count.
-	 */
-	struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
-	struct mm_struct *mm;
-
-	if (!p)
-		return; /* Presumably process exited. */
-
-	/* Take a safe reference to the mm_struct, which may otherwise
-	 * disappear even while the kfd_process is still referenced.
-	 */
-	mm = get_task_mm(p->lead_thread);
-	if (!mm) {
-		kfd_unref_process(p);
-		return; /* Process is exiting */
-	}
-
-	user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);
-	if (unlikely(user_gpu_id == -EINVAL)) {
-		WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);
-		return;
-	}
-	memset(&memory_exception_data, 0, sizeof(memory_exception_data));
-
-	mmap_read_lock(mm);
-	vma = find_vma(mm, address);
-
-	memory_exception_data.gpu_id = user_gpu_id;
-	memory_exception_data.va = address;
-	/* Set failure reason */
-	memory_exception_data.failure.NotPresent = 1;
-	memory_exception_data.failure.NoExecute = 0;
-	memory_exception_data.failure.ReadOnly = 0;
-	if (vma && address >= vma->vm_start) {
-		memory_exception_data.failure.NotPresent = 0;
-
-		if (is_write_requested && !(vma->vm_flags & VM_WRITE))
-			memory_exception_data.failure.ReadOnly = 1;
-		else
-			memory_exception_data.failure.ReadOnly = 0;
-
-		if (is_execute_requested && !(vma->vm_flags & VM_EXEC))
-			memory_exception_data.failure.NoExecute = 1;
-		else
-			memory_exception_data.failure.NoExecute = 0;
-	}
-
-	mmap_read_unlock(mm);
-	mmput(mm);
-
-	pr_debug("notpresent %d, noexecute %d, readonly %d\n",
-			memory_exception_data.failure.NotPresent,
-			memory_exception_data.failure.NoExecute,
-			memory_exception_data.failure.ReadOnly);
-
-	/* Workaround on Raven to not kill the process when memory is freed
-	 * before IOMMU is able to finish processing all the excessive PPRs
-	 */
-
-	if (KFD_GC_VERSION(dev) != IP_VERSION(9, 1, 0) &&
-	    KFD_GC_VERSION(dev) != IP_VERSION(9, 2, 2) &&
-	    KFD_GC_VERSION(dev) != IP_VERSION(9, 3, 0))
-		lookup_events_by_type_and_signal(p, KFD_EVENT_TYPE_MEMORY,
-				&memory_exception_data);
-
-	kfd_unref_process(p);
-}
-#endif /* KFD_SUPPORT_IOMMU_V2 */
-
 void kfd_signal_hw_exception_event(u32 pasid)
 {
 	/*