/*
* 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"
#include <subdev/bar.h>
/******************************************************************************
* instmem object base implementation
*****************************************************************************/
void
nvkm_instobj_load(struct nvkm_instobj *iobj)
{
struct nvkm_memory *memory = &iobj->memory;
const u64 size = nvkm_memory_size(memory);
void __iomem *map;
int i;
if (!(map = nvkm_kmap(memory))) {
for (i = 0; i < size; i += 4)
nvkm_wo32(memory, i, iobj->suspend[i / 4]);
} else {
memcpy_toio(map, iobj->suspend, size);
}
nvkm_done(memory);
kvfree(iobj->suspend);
iobj->suspend = NULL;
}
int
nvkm_instobj_save(struct nvkm_instobj *iobj)
{
struct nvkm_memory *memory = &iobj->memory;
const u64 size = nvkm_memory_size(memory);
void __iomem *map;
int i;
iobj->suspend = kvmalloc(size, GFP_KERNEL);
if (!iobj->suspend)
return -ENOMEM;
if (!(map = nvkm_kmap(memory))) {
for (i = 0; i < size; i += 4)
iobj->suspend[i / 4] = nvkm_ro32(memory, i);
} else {
memcpy_fromio(iobj->suspend, map, size);
}
nvkm_done(memory);
return 0;
}
void
nvkm_instobj_dtor(struct nvkm_instmem *imem, struct nvkm_instobj *iobj)
{
spin_lock(&imem->lock);
list_del(&iobj->head);
spin_unlock(&imem->lock);
}
void
nvkm_instobj_ctor(const struct nvkm_memory_func *func,
struct nvkm_instmem *imem, struct nvkm_instobj *iobj)
{
nvkm_memory_ctor(func, &iobj->memory);
iobj->suspend = NULL;
spin_lock(&imem->lock);
list_add_tail(&iobj->head, &imem->list);
spin_unlock(&imem->lock);
}
int
nvkm_instobj_wrap(struct nvkm_device *device,
struct nvkm_memory *memory, struct nvkm_memory **pmemory)
{
struct nvkm_instmem *imem = device->imem;
int ret;
if (!imem->func->memory_wrap)
return -ENOSYS;
ret = imem->func->memory_wrap(imem, memory, pmemory);
if (ret)
return ret;
container_of(*pmemory, struct nvkm_instobj, memory)->preserve = true;
return 0;
}
int
nvkm_instobj_new(struct nvkm_instmem *imem, u32 size, u32 align, bool zero, bool preserve,
struct nvkm_memory **pmemory)
{
struct nvkm_subdev *subdev = &imem->subdev;
struct nvkm_memory *memory = NULL;
u32 offset;
int ret;
ret = imem->func->memory_new(imem, size, align, zero, &memory);
if (ret) {
nvkm_error(subdev, "OOM: %08x %08x %d\n", size, align, ret);
goto done;
}
nvkm_trace(subdev, "new %08x %08x %d: %010llx %010llx\n", size, align,
zero, nvkm_memory_addr(memory), nvkm_memory_size(memory));
if (!imem->func->zero && zero) {
void __iomem *map = nvkm_kmap(memory);
if (unlikely(!map)) {
for (offset = 0; offset < size; offset += 4)
nvkm_wo32(memory, offset, 0x00000000);
} else {
memset_io(map, 0x00, size);
}
nvkm_done(memory);
}
container_of(memory, struct nvkm_instobj, memory)->preserve = preserve;
done:
if (ret)
nvkm_memory_unref(&memory);
*pmemory = memory;
return ret;
}
/******************************************************************************
* instmem subdev base implementation
*****************************************************************************/
u32
nvkm_instmem_rd32(struct nvkm_instmem *imem, u32 addr)
{
return imem->func->rd32(imem, addr);
}
void
nvkm_instmem_wr32(struct nvkm_instmem *imem, u32 addr, u32 data)
{
return imem->func->wr32(imem, addr, data);
}
void
nvkm_instmem_boot(struct nvkm_instmem *imem)
{
/* Separate bootstrapped objects from normal list, as we need
* to make sure they're accessed with the slowpath on suspend
* and resume.
*/
struct nvkm_instobj *iobj, *itmp;
spin_lock(&imem->lock);
list_for_each_entry_safe(iobj, itmp, &imem->list, head) {
list_move_tail(&iobj->head, &imem->boot);
}
spin_unlock(&imem->lock);
}
static int
nvkm_instmem_fini(struct nvkm_subdev *subdev, bool suspend)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
int ret;
if (suspend) {
ret = imem->func->suspend(imem);
if (ret)
return ret;
imem->suspend = true;
}
if (imem->func->fini)
imem->func->fini(imem);
return 0;
}
static int
nvkm_instmem_init(struct nvkm_subdev *subdev)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
if (imem->suspend) {
if (imem->func->resume)
imem->func->resume(imem);
imem->suspend = false;
return 0;
}
nvkm_bar_bar2_init(subdev->device);
return 0;
}
static int
nvkm_instmem_oneinit(struct nvkm_subdev *subdev)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
if (imem->func->oneinit)
return imem->func->oneinit(imem);
return 0;
}
static void *
nvkm_instmem_dtor(struct nvkm_subdev *subdev)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
void *data = imem;
if (imem->func->dtor)
data = imem->func->dtor(imem);
mutex_destroy(&imem->mutex);
return data;
}
static const struct nvkm_subdev_func
nvkm_instmem = {
.dtor = nvkm_instmem_dtor,
.oneinit = nvkm_instmem_oneinit,
.init = nvkm_instmem_init,
.fini = nvkm_instmem_fini,
};
void
nvkm_instmem_ctor(const struct nvkm_instmem_func *func, struct nvkm_device *device,
enum nvkm_subdev_type type, int inst, struct nvkm_instmem *imem)
{
nvkm_subdev_ctor(&nvkm_instmem, device, type, inst, &imem->subdev);
imem->func = func;
spin_lock_init(&imem->lock);
INIT_LIST_HEAD(&imem->list);
INIT_LIST_HEAD(&imem->boot);
mutex_init(&imem->mutex);
}
Codebase Browser
linux