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/*
* 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;
}
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