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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 "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"
#include "nouveau_vmm.h"
#include "nv50_display.h"
#include <nvif/push206e.h>
#include <nvhw/class/cl826f.h>
static int
nv84_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
{
struct nvif_push *push = chan->chan.push;
int ret = PUSH_WAIT(push, 8);
if (ret == 0) {
PUSH_MTHD(push, NV826F, SET_CONTEXT_DMA_SEMAPHORE, chan->vram.handle);
PUSH_MTHD(push, NV826F, SEMAPHOREA,
NVVAL(NV826F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
SEMAPHOREB, lower_32_bits(virtual),
SEMAPHOREC, sequence,
SEMAPHORED,
NVDEF(NV826F, SEMAPHORED, OPERATION, RELEASE),
NON_STALLED_INTERRUPT, 0);
PUSH_KICK(push);
}
return ret;
}
static int
nv84_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
{
struct nvif_push *push = chan->chan.push;
int ret = PUSH_WAIT(push, 7);
if (ret == 0) {
PUSH_MTHD(push, NV826F, SET_CONTEXT_DMA_SEMAPHORE, chan->vram.handle);
PUSH_MTHD(push, NV826F, SEMAPHOREA,
NVVAL(NV826F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
SEMAPHOREB, lower_32_bits(virtual),
SEMAPHOREC, sequence,
SEMAPHORED,
NVDEF(NV826F, SEMAPHORED, OPERATION, ACQ_GEQ));
PUSH_KICK(push);
}
return ret;
}
static int
nv84_fence_emit(struct nouveau_fence *fence)
{
struct nouveau_channel *chan = fence->channel;
struct nv84_fence_chan *fctx = chan->fence;
u64 addr = fctx->vma->addr + chan->chid * 16;
return fctx->base.emit32(chan, addr, fence->base.seqno);
}
static int
nv84_fence_sync(struct nouveau_fence *fence,
struct nouveau_channel *prev, struct nouveau_channel *chan)
{
struct nv84_fence_chan *fctx = chan->fence;
u64 addr = fctx->vma->addr + prev->chid * 16;
return fctx->base.sync32(chan, addr, fence->base.seqno);
}
static u32
nv84_fence_read(struct nouveau_channel *chan)
{
struct nv84_fence_priv *priv = chan->drm->fence;
return nouveau_bo_rd32(priv->bo, chan->chid * 16/4);
}
static void
nv84_fence_context_del(struct nouveau_channel *chan)
{
struct nv84_fence_priv *priv = chan->drm->fence;
struct nv84_fence_chan *fctx = chan->fence;
nouveau_bo_wr32(priv->bo, chan->chid * 16 / 4, fctx->base.sequence);
mutex_lock(&priv->mutex);
nouveau_vma_del(&fctx->vma);
mutex_unlock(&priv->mutex);
nouveau_fence_context_del(&fctx->base);
chan->fence = NULL;
nouveau_fence_context_free(&fctx->base);
}
int
nv84_fence_context_new(struct nouveau_channel *chan)
{
struct nv84_fence_priv *priv = chan->drm->fence;
struct nv84_fence_chan *fctx;
int ret;
fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
if (!fctx)
return -ENOMEM;
nouveau_fence_context_new(chan, &fctx->base);
fctx->base.emit = nv84_fence_emit;
fctx->base.sync = nv84_fence_sync;
fctx->base.read = nv84_fence_read;
fctx->base.emit32 = nv84_fence_emit32;
fctx->base.sync32 = nv84_fence_sync32;
fctx->base.sequence = nv84_fence_read(chan);
mutex_lock(&priv->mutex);
ret = nouveau_vma_new(priv->bo, chan->vmm, &fctx->vma);
mutex_unlock(&priv->mutex);
if (ret)
nv84_fence_context_del(chan);
return ret;
}
static bool
nv84_fence_suspend(struct nouveau_drm *drm)
{
struct nv84_fence_priv *priv = drm->fence;
int i;
priv->suspend = vmalloc(array_size(sizeof(u32), drm->chan.nr));
if (priv->suspend) {
for (i = 0; i < drm->chan.nr; i++)
priv->suspend[i] = nouveau_bo_rd32(priv->bo, i*4);
}
return priv->suspend != NULL;
}
static void
nv84_fence_resume(struct nouveau_drm *drm)
{
struct nv84_fence_priv *priv = drm->fence;
int i;
if (priv->suspend) {
for (i = 0; i < drm->chan.nr; i++)
nouveau_bo_wr32(priv->bo, i*4, priv->suspend[i]);
vfree(priv->suspend);
priv->suspend = NULL;
}
}
static void
nv84_fence_destroy(struct nouveau_drm *drm)
{
struct nv84_fence_priv *priv = drm->fence;
nouveau_bo_unmap(priv->bo);
if (priv->bo)
nouveau_bo_unpin(priv->bo);
nouveau_bo_ref(NULL, &priv->bo);
drm->fence = NULL;
kfree(priv);
}
int
nv84_fence_create(struct nouveau_drm *drm)
{
struct nv84_fence_priv *priv;
u32 domain;
int ret;
priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->base.dtor = nv84_fence_destroy;
priv->base.suspend = nv84_fence_suspend;
priv->base.resume = nv84_fence_resume;
priv->base.context_new = nv84_fence_context_new;
priv->base.context_del = nv84_fence_context_del;
priv->base.uevent = true;
mutex_init(&priv->mutex);
/* Use VRAM if there is any ; otherwise fallback to system memory */
domain = drm->client.device.info.ram_size != 0 ? TTM_PL_FLAG_VRAM :
/*
* fences created in sysmem must be non-cached or we
* will lose CPU/GPU coherency!
*/
TTM_PL_FLAG_TT | TTM_PL_FLAG_UNCACHED;
ret = nouveau_bo_new(&drm->client, 16 * drm->chan.nr, 0,
domain, 0, 0, NULL, NULL, &priv->bo);
if (ret == 0) {
ret = nouveau_bo_pin(priv->bo, domain, false);
if (ret == 0) {
ret = nouveau_bo_map(priv->bo);
if (ret)
nouveau_bo_unpin(priv->bo);
}
if (ret)
nouveau_bo_ref(NULL, &priv->bo);
}
if (ret)
nv84_fence_destroy(drm);
return ret;
}
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