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/*
* Copyright 2017 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 "user.h"
#include <core/memory.h>
#include <subdev/bar.h>
#include <subdev/fb.h>
#include <nvif/clb069.h>
#include <nvif/unpack.h>
static int
nvkm_ufault_map(struct nvkm_object *object, u64 *addr, u32 *size)
{
struct nvkm_fault *fault = nvkm_fault(object->engine);
struct nvkm_device *device = fault->engine.subdev.device;
*addr = device->func->resource_addr(device, 3) + fault->vma.offset;
*size = nvkm_memory_size(fault->mem);
return 0;
}
static int
nvkm_ufault_ntfy(struct nvkm_object *object, u32 type,
struct nvkm_event **pevent)
{
struct nvkm_fault *fault = nvkm_fault(object->engine);
if (type == NVB069_VN_NTFY_FAULT) {
*pevent = &fault->event;
return 0;
}
return -EINVAL;
}
static int
nvkm_ufault_fini(struct nvkm_object *object, bool suspend)
{
struct nvkm_fault *fault = nvkm_fault(object->engine);
fault->func->fini(fault);
return 0;
}
static int
nvkm_ufault_init(struct nvkm_object *object)
{
struct nvkm_fault *fault = nvkm_fault(object->engine);
fault->func->init(fault);
return 0;
}
static void *
nvkm_ufault_dtor(struct nvkm_object *object)
{
struct nvkm_fault *fault = nvkm_fault(object->engine);
mutex_lock(&fault->engine.subdev.mutex);
if (fault->user == object)
fault->user = NULL;
mutex_unlock(&fault->engine.subdev.mutex);
if (fault->vma.node) {
nvkm_vm_unmap(&fault->vma);
nvkm_vm_put(&fault->vma);
}
nvkm_memory_del(&fault->mem);
return object;
}
static const struct nvkm_object_func
nvkm_ufault = {
.dtor = nvkm_ufault_dtor,
.init = nvkm_ufault_init,
.fini = nvkm_ufault_fini,
.ntfy = nvkm_ufault_ntfy,
.map = nvkm_ufault_map,
};
int
nvkm_ufault_new(struct nvkm_fault *fault, const struct nvkm_oclass *oclass,
void *argv, u32 argc, struct nvkm_object **pobject)
{
union {
struct nvb069_vn vn;
} *args = argv;
struct nvkm_subdev *subdev = &fault->engine.subdev;
struct nvkm_device *device = subdev->device;
struct nvkm_vm *bar2 = nvkm_bar_kmap(device->bar);
u32 size = fault->func->size(fault);
int ret = -ENOSYS;
if ((ret = nvif_unvers(ret, &argv, &argc, args->vn)))
return ret;
ret = nvkm_object_new_(&nvkm_ufault, oclass, NULL, 0, pobject);
if (ret)
return ret;
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size,
0x1000, false, &fault->mem);
if (ret)
return ret;
ret = nvkm_vm_get(bar2, nvkm_memory_size(fault->mem), 12,
NV_MEM_ACCESS_RW, &fault->vma);
if (ret)
return ret;
nvkm_memory_map(fault->mem, &fault->vma, 0);
mutex_lock(&subdev->mutex);
if (!fault->user)
fault->user = *pobject;
else
ret = -EBUSY;
mutex_unlock(&subdev->mutex);
return 0;
}
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