blob: 10c987a654ec5c95354e92b5e96435e0a8b8d5b0 [file] [log] [blame]
/*
* 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 <core/memory.h>
#include <subdev/bar.h>
/******************************************************************************
* instmem object base implementation
*****************************************************************************/
#define nvkm_instobj(p) container_of((p), struct nvkm_instobj, memory)
struct nvkm_instobj {
struct nvkm_memory memory;
struct nvkm_memory *parent;
struct nvkm_instmem *imem;
struct list_head head;
u32 *suspend;
void __iomem *map;
};
static enum nvkm_memory_target
nvkm_instobj_target(struct nvkm_memory *memory)
{
memory = nvkm_instobj(memory)->parent;
return nvkm_memory_target(memory);
}
static u64
nvkm_instobj_addr(struct nvkm_memory *memory)
{
memory = nvkm_instobj(memory)->parent;
return nvkm_memory_addr(memory);
}
static u64
nvkm_instobj_size(struct nvkm_memory *memory)
{
memory = nvkm_instobj(memory)->parent;
return nvkm_memory_size(memory);
}
static void
nvkm_instobj_release(struct nvkm_memory *memory)
{
struct nvkm_instobj *iobj = nvkm_instobj(memory);
nvkm_bar_flush(iobj->imem->subdev.device->bar);
}
static void __iomem *
nvkm_instobj_acquire(struct nvkm_memory *memory)
{
return nvkm_instobj(memory)->map;
}
static u32
nvkm_instobj_rd32(struct nvkm_memory *memory, u64 offset)
{
return ioread32_native(nvkm_instobj(memory)->map + offset);
}
static void
nvkm_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
{
iowrite32_native(data, nvkm_instobj(memory)->map + offset);
}
static void
nvkm_instobj_map(struct nvkm_memory *memory, struct nvkm_vma *vma, u64 offset)
{
memory = nvkm_instobj(memory)->parent;
nvkm_memory_map(memory, vma, offset);
}
static void *
nvkm_instobj_dtor(struct nvkm_memory *memory)
{
struct nvkm_instobj *iobj = nvkm_instobj(memory);
spin_lock(&iobj->imem->lock);
list_del(&iobj->head);
spin_unlock(&iobj->imem->lock);
nvkm_memory_del(&iobj->parent);
return iobj;
}
static const struct nvkm_memory_func
nvkm_instobj_func = {
.dtor = nvkm_instobj_dtor,
.target = nvkm_instobj_target,
.addr = nvkm_instobj_addr,
.size = nvkm_instobj_size,
.acquire = nvkm_instobj_acquire,
.release = nvkm_instobj_release,
.rd32 = nvkm_instobj_rd32,
.wr32 = nvkm_instobj_wr32,
.map = nvkm_instobj_map,
};
static void
nvkm_instobj_boot(struct nvkm_memory *memory, struct nvkm_vm *vm)
{
memory = nvkm_instobj(memory)->parent;
nvkm_memory_boot(memory, vm);
}
static void
nvkm_instobj_release_slow(struct nvkm_memory *memory)
{
struct nvkm_instobj *iobj = nvkm_instobj(memory);
nvkm_instobj_release(memory);
nvkm_done(iobj->parent);
}
static void __iomem *
nvkm_instobj_acquire_slow(struct nvkm_memory *memory)
{
struct nvkm_instobj *iobj = nvkm_instobj(memory);
iobj->map = nvkm_kmap(iobj->parent);
if (iobj->map)
memory->func = &nvkm_instobj_func;
return iobj->map;
}
static u32
nvkm_instobj_rd32_slow(struct nvkm_memory *memory, u64 offset)
{
struct nvkm_instobj *iobj = nvkm_instobj(memory);
return nvkm_ro32(iobj->parent, offset);
}
static void
nvkm_instobj_wr32_slow(struct nvkm_memory *memory, u64 offset, u32 data)
{
struct nvkm_instobj *iobj = nvkm_instobj(memory);
return nvkm_wo32(iobj->parent, offset, data);
}
static const struct nvkm_memory_func
nvkm_instobj_func_slow = {
.dtor = nvkm_instobj_dtor,
.target = nvkm_instobj_target,
.addr = nvkm_instobj_addr,
.size = nvkm_instobj_size,
.boot = nvkm_instobj_boot,
.acquire = nvkm_instobj_acquire_slow,
.release = nvkm_instobj_release_slow,
.rd32 = nvkm_instobj_rd32_slow,
.wr32 = nvkm_instobj_wr32_slow,
.map = nvkm_instobj_map,
};
int
nvkm_instobj_new(struct nvkm_instmem *imem, u32 size, u32 align, bool zero,
struct nvkm_memory **pmemory)
{
struct nvkm_memory *memory = NULL;
struct nvkm_instobj *iobj;
u32 offset;
int ret;
ret = imem->func->memory_new(imem, size, align, zero, &memory);
if (ret)
goto done;
if (!imem->func->persistent) {
if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL))) {
ret = -ENOMEM;
goto done;
}
nvkm_memory_ctor(&nvkm_instobj_func_slow, &iobj->memory);
iobj->parent = memory;
iobj->imem = imem;
spin_lock(&iobj->imem->lock);
list_add_tail(&iobj->head, &imem->list);
spin_unlock(&iobj->imem->lock);
memory = &iobj->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);
}
done:
if (ret)
nvkm_memory_del(&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);
}
static int
nvkm_instmem_fini(struct nvkm_subdev *subdev, bool suspend)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
struct nvkm_instobj *iobj;
int i;
if (imem->func->fini)
imem->func->fini(imem);
if (suspend) {
list_for_each_entry(iobj, &imem->list, head) {
struct nvkm_memory *memory = iobj->parent;
u64 size = nvkm_memory_size(memory);
iobj->suspend = vmalloc(size);
if (!iobj->suspend)
return -ENOMEM;
for (i = 0; i < size; i += 4)
iobj->suspend[i / 4] = nvkm_ro32(memory, i);
}
}
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 int
nvkm_instmem_init(struct nvkm_subdev *subdev)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
struct nvkm_instobj *iobj;
int i;
list_for_each_entry(iobj, &imem->list, head) {
if (iobj->suspend) {
struct nvkm_memory *memory = iobj->parent;
u64 size = nvkm_memory_size(memory);
for (i = 0; i < size; i += 4)
nvkm_wo32(memory, i, iobj->suspend[i / 4]);
vfree(iobj->suspend);
iobj->suspend = NULL;
}
}
return 0;
}
static void *
nvkm_instmem_dtor(struct nvkm_subdev *subdev)
{
struct nvkm_instmem *imem = nvkm_instmem(subdev);
if (imem->func->dtor)
return imem->func->dtor(imem);
return imem;
}
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, int index,
struct nvkm_instmem *imem)
{
nvkm_subdev_ctor(&nvkm_instmem, device, index, &imem->subdev);
imem->func = func;
spin_lock_init(&imem->lock);
INIT_LIST_HEAD(&imem->list);
}