--- /dev/null
+/*
+ * Copyright 2018 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+#include <core/memory.h>
+#include <core/notify.h>
+#include <subdev/bar.h>
+#include <subdev/mmu.h>
+
+static void
+nvkm_fault_ntfy_fini(struct nvkm_event *event, int type, int index)
+{
+ struct nvkm_fault *fault = container_of(event, typeof(*fault), event);
+ fault->func->buffer.fini(fault->buffer[index]);
+}
+
+static void
+nvkm_fault_ntfy_init(struct nvkm_event *event, int type, int index)
+{
+ struct nvkm_fault *fault = container_of(event, typeof(*fault), event);
+ fault->func->buffer.init(fault->buffer[index]);
+}
+
+static int
+nvkm_fault_ntfy_ctor(struct nvkm_object *object, void *argv, u32 argc,
+ struct nvkm_notify *notify)
+{
+ struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
+ if (argc == 0) {
+ notify->size = 0;
+ notify->types = 1;
+ notify->index = buffer->id;
+ return 0;
+ }
+ return -ENOSYS;
+}
+
+static const struct nvkm_event_func
+nvkm_fault_ntfy = {
+ .ctor = nvkm_fault_ntfy_ctor,
+ .init = nvkm_fault_ntfy_init,
+ .fini = nvkm_fault_ntfy_fini,
+};
+
+static void
+nvkm_fault_intr(struct nvkm_subdev *subdev)
+{
+ struct nvkm_fault *fault = nvkm_fault(subdev);
+ return fault->func->intr(fault);
+}
+
+static int
+nvkm_fault_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+ struct nvkm_fault *fault = nvkm_fault(subdev);
+ if (fault->func->fini)
+ fault->func->fini(fault);
+ return 0;
+}
+
+static int
+nvkm_fault_init(struct nvkm_subdev *subdev)
+{
+ struct nvkm_fault *fault = nvkm_fault(subdev);
+ if (fault->func->init)
+ fault->func->init(fault);
+ return 0;
+}
+
+static int
+nvkm_fault_oneinit_buffer(struct nvkm_fault *fault, int id)
+{
+ struct nvkm_subdev *subdev = &fault->subdev;
+ struct nvkm_device *device = subdev->device;
+ struct nvkm_vmm *bar2 = nvkm_bar_bar2_vmm(device);
+ struct nvkm_fault_buffer *buffer;
+ int ret;
+
+ if (!(buffer = kzalloc(sizeof(*buffer), GFP_KERNEL)))
+ return -ENOMEM;
+ buffer->fault = fault;
+ buffer->id = id;
+ buffer->entries = fault->func->buffer.entries(buffer);
+ fault->buffer[id] = buffer;
+
+ nvkm_debug(subdev, "buffer %d: %d entries\n", id, buffer->entries);
+
+ ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, buffer->entries *
+ fault->func->buffer.entry_size, 0x1000, true,
+ &buffer->mem);
+ if (ret)
+ return ret;
+
+ ret = nvkm_vmm_get(bar2, 12, nvkm_memory_size(buffer->mem),
+ &buffer->vma);
+ if (ret)
+ return ret;
+
+ return nvkm_memory_map(buffer->mem, 0, bar2, buffer->vma, NULL, 0);
+}
+
+static int
+nvkm_fault_oneinit(struct nvkm_subdev *subdev)
+{
+ struct nvkm_fault *fault = nvkm_fault(subdev);
+ int ret, i;
+
+ for (i = 0; i < ARRAY_SIZE(fault->buffer); i++) {
+ if (i < fault->func->buffer.nr) {
+ ret = nvkm_fault_oneinit_buffer(fault, i);
+ if (ret)
+ return ret;
+ fault->buffer_nr = i + 1;
+ }
+ }
+
+ return nvkm_event_init(&nvkm_fault_ntfy, 1, fault->buffer_nr,
+ &fault->event);
+}
+
+static void *
+nvkm_fault_dtor(struct nvkm_subdev *subdev)
+{
+ struct nvkm_vmm *bar2 = nvkm_bar_bar2_vmm(subdev->device);
+ struct nvkm_fault *fault = nvkm_fault(subdev);
+ int i;
+
+ nvkm_event_fini(&fault->event);
+
+ for (i = 0; i < fault->buffer_nr; i++) {
+ if (fault->buffer[i]) {
+ nvkm_vmm_put(bar2, &fault->buffer[i]->vma);
+ nvkm_memory_unref(&fault->buffer[i]->mem);
+ kfree(fault->buffer[i]);
+ }
+ }
+
+ return fault;
+}
+
+static const struct nvkm_subdev_func
+nvkm_fault = {
+ .dtor = nvkm_fault_dtor,
+ .oneinit = nvkm_fault_oneinit,
+ .init = nvkm_fault_init,
+ .fini = nvkm_fault_fini,
+ .intr = nvkm_fault_intr,
+};
+
+int
+nvkm_fault_new_(const struct nvkm_fault_func *func, struct nvkm_device *device,
+ int index, struct nvkm_fault **pfault)
+{
+ struct nvkm_fault *fault;
+ if (!(fault = *pfault = kzalloc(sizeof(*fault), GFP_KERNEL)))
+ return -ENOMEM;
+ nvkm_subdev_ctor(&nvkm_fault, device, index, &fault->subdev);
+ fault->func = func;
+ return 0;
+}
projects / linux.git / commitdiff