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/*
* Copyright 2012 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.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
void
nvkm_bar_flush(struct nvkm_bar *bar)
{
if (bar && bar->func->flush)
bar->func->flush(bar);
}
struct nvkm_vmm *
nvkm_bar_bar1_vmm(struct nvkm_device *device)
{
return device->bar->func->bar1.vmm(device->bar);
}
void
nvkm_bar_bar1_reset(struct nvkm_device *device)
{
struct nvkm_bar *bar = device->bar;
if (bar) {
bar->func->bar1.init(bar);
bar->func->bar1.wait(bar);
}
}
struct nvkm_vmm *
nvkm_bar_bar2_vmm(struct nvkm_device *device)
{
/* Denies access to BAR2 when it's not initialised, used by INSTMEM
* to know when object access needs to go through the BAR0 window.
*/
struct nvkm_bar *bar = device->bar;
if (bar && bar->bar2)
return bar->func->bar2.vmm(bar);
return NULL;
}
void
nvkm_bar_bar2_reset(struct nvkm_device *device)
{
struct nvkm_bar *bar = device->bar;
if (bar && bar->bar2) {
bar->func->bar2.init(bar);
bar->func->bar2.wait(bar);
}
}
void
nvkm_bar_bar2_fini(struct nvkm_device *device)
{
struct nvkm_bar *bar = device->bar;
if (bar && bar->bar2) {
bar->func->bar2.fini(bar);
bar->bar2 = false;
}
}
void
nvkm_bar_bar2_init(struct nvkm_device *device)
{
struct nvkm_bar *bar = device->bar;
if (bar && bar->subdev.oneinit && !bar->bar2 && bar->func->bar2.init) {
bar->func->bar2.init(bar);
bar->func->bar2.wait(bar);
bar->bar2 = true;
}
}
static int
nvkm_bar_fini(struct nvkm_subdev *subdev, bool suspend)
{
struct nvkm_bar *bar = nvkm_bar(subdev);
if (bar->func->bar1.fini)
bar->func->bar1.fini(bar);
return 0;
}
static int
nvkm_bar_init(struct nvkm_subdev *subdev)
{
struct nvkm_bar *bar = nvkm_bar(subdev);
bar->func->bar1.init(bar);
bar->func->bar1.wait(bar);
if (bar->func->init)
bar->func->init(bar);
return 0;
}
static int
nvkm_bar_oneinit(struct nvkm_subdev *subdev)
{
struct nvkm_bar *bar = nvkm_bar(subdev);
return bar->func->oneinit(bar);
}
static void *
nvkm_bar_dtor(struct nvkm_subdev *subdev)
{
struct nvkm_bar *bar = nvkm_bar(subdev);
nvkm_bar_bar2_fini(subdev->device);
return bar->func->dtor(bar);
}
static const struct nvkm_subdev_func
nvkm_bar = {
.dtor = nvkm_bar_dtor,
.oneinit = nvkm_bar_oneinit,
.init = nvkm_bar_init,
.fini = nvkm_bar_fini,
};
void
nvkm_bar_ctor(const struct nvkm_bar_func *func, struct nvkm_device *device,
enum nvkm_subdev_type type, int inst, struct nvkm_bar *bar)
{
nvkm_subdev_ctor(&nvkm_bar, device, type, inst, &bar->subdev);
bar->func = func;
spin_lock_init(&bar->lock);
}
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