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2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c
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@@ -23,21 +23,19 @@
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 #include <core/memory.h>
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 #include <core/notify.h>
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-#include <subdev/bar.h>
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-#include <subdev/mmu.h>
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 static void
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 nvkm_fault_ntfy_fini(struct nvkm_event *event, int type, int index)
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 {
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 	struct nvkm_fault *fault = container_of(event, typeof(*fault), event);
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-	fault->func->buffer.fini(fault->buffer[index]);
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+	fault->func->buffer.intr(fault->buffer[index], false);
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 }
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 static void
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 nvkm_fault_ntfy_init(struct nvkm_event *event, int type, int index)
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 {
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 	struct nvkm_fault *fault = container_of(event, typeof(*fault), event);
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-	fault->func->buffer.init(fault->buffer[index]);
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+	fault->func->buffer.intr(fault->buffer[index], true);
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 }
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 static int
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@@ -91,7 +89,6 @@
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 {
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 	struct nvkm_subdev *subdev = &fault->subdev;
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 	struct nvkm_device *device = subdev->device;
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-	struct nvkm_vmm *bar2 = nvkm_bar_bar2_vmm(device);
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 	struct nvkm_fault_buffer *buffer;
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 	int ret;
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@@ -99,7 +96,7 @@
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 		return -ENOMEM;
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 	buffer->fault = fault;
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 	buffer->id = id;
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-	buffer->entries = fault->func->buffer.entries(buffer);
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+	fault->func->buffer.info(buffer);
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 	fault->buffer[id] = buffer;
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 	nvkm_debug(subdev, "buffer %d: %d entries\n", id, buffer->entries);
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@@ -110,12 +107,12 @@
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 	if (ret)
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 		return ret;
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-	ret = nvkm_vmm_get(bar2, 12, nvkm_memory_size(buffer->mem),
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-			   &buffer->vma);
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-	if (ret)
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-		return ret;
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+	/* Pin fault buffer in BAR2. */
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+	buffer->addr = fault->func->buffer.pin(buffer);
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+	if (buffer->addr == ~0ULL)
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+		return -EFAULT;
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-	return nvkm_memory_map(buffer->mem, 0, bar2, buffer->vma, NULL, 0);
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+	return 0;
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 }
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 static int
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@@ -146,7 +143,6 @@
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 static void *
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 nvkm_fault_dtor(struct nvkm_subdev *subdev)
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 {
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-	struct nvkm_vmm *bar2 = nvkm_bar_bar2_vmm(subdev->device);
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 	struct nvkm_fault *fault = nvkm_fault(subdev);
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 	int i;
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@@ -155,7 +151,6 @@
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 	for (i = 0; i < fault->buffer_nr; i++) {
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 		if (fault->buffer[i]) {
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-			nvkm_vmm_put(bar2, &fault->buffer[i]->vma);
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 			nvkm_memory_unref(&fault->buffer[i]->mem);
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 			kfree(fault->buffer[i]);
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 		}
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@@ -182,5 +177,7 @@
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 		return -ENOMEM;
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 	nvkm_subdev_ctor(&nvkm_fault, device, index, &fault->subdev);
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 	fault->func = func;
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+	fault->user.ctor = nvkm_ufault_new;
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+	fault->user.base = func->user.base;
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 	return 0;
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 }