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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 <core/object.h>
#include <core/client.h>
#include <core/class.h>
#include <engine/fifo.h>
#include "nouveau_drm.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"
#include "nv50_display.h"
struct nvc0_fence_priv {
struct nouveau_fence_priv base;
struct nouveau_bo *bo;
u32 *suspend;
};
struct nvc0_fence_chan {
struct nouveau_fence_chan base;
struct nouveau_vma vma;
struct nouveau_vma dispc_vma[4];
};
u64
nvc0_fence_crtc(struct nouveau_channel *chan, int crtc)
{
struct nvc0_fence_chan *fctx = chan->fence;
return fctx->dispc_vma[crtc].offset;
}
static int
nvc0_fence_emit(struct nouveau_fence *fence)
{
struct nouveau_channel *chan = fence->channel;
struct nvc0_fence_chan *fctx = chan->fence;
struct nouveau_fifo_chan *fifo = (void *)chan->object;
u64 addr = fctx->vma.offset + fifo->chid * 16;
int ret;
ret = RING_SPACE(chan, 5);
if (ret == 0) {
BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4);
OUT_RING (chan, upper_32_bits(addr));
OUT_RING (chan, lower_32_bits(addr));
OUT_RING (chan, fence->sequence);
OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG);
FIRE_RING (chan);
}
return ret;
}
static int
nvc0_fence_sync(struct nouveau_fence *fence,
struct nouveau_channel *prev, struct nouveau_channel *chan)
{
struct nvc0_fence_chan *fctx = chan->fence;
struct nouveau_fifo_chan *fifo = (void *)prev->object;
u64 addr = fctx->vma.offset + fifo->chid * 16;
int ret;
ret = RING_SPACE(chan, 5);
if (ret == 0) {
BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4);
OUT_RING (chan, upper_32_bits(addr));
OUT_RING (chan, lower_32_bits(addr));
OUT_RING (chan, fence->sequence);
OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL |
NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD);
FIRE_RING (chan);
}
return ret;
}
static u32
nvc0_fence_read(struct nouveau_channel *chan)
{
struct nouveau_fifo_chan *fifo = (void *)chan->object;
struct nvc0_fence_priv *priv = chan->drm->fence;
return nouveau_bo_rd32(priv->bo, fifo->chid * 16/4);
}
static void
nvc0_fence_context_del(struct nouveau_channel *chan)
{
struct drm_device *dev = chan->drm->dev;
struct nvc0_fence_priv *priv = chan->drm->fence;
struct nvc0_fence_chan *fctx = chan->fence;
int i;
for (i = 0; i < dev->mode_config.num_crtc; i++) {
struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i);
nouveau_bo_vma_del(bo, &fctx->dispc_vma[i]);
}
nouveau_bo_vma_del(priv->bo, &fctx->vma);
nouveau_fence_context_del(&fctx->base);
chan->fence = NULL;
kfree(fctx);
}
static int
nvc0_fence_context_new(struct nouveau_channel *chan)
{
struct nouveau_fifo_chan *fifo = (void *)chan->object;
struct nouveau_client *client = nouveau_client(fifo);
struct nvc0_fence_priv *priv = chan->drm->fence;
struct nvc0_fence_chan *fctx;
int ret, i;
fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
if (!fctx)
return -ENOMEM;
nouveau_fence_context_new(&fctx->base);
ret = nouveau_bo_vma_add(priv->bo, client->vm, &fctx->vma);
if (ret)
nvc0_fence_context_del(chan);
/* map display semaphore buffers into channel's vm */
for (i = 0; !ret && i < chan->drm->dev->mode_config.num_crtc; i++) {
struct nouveau_bo *bo = nv50_display_crtc_sema(chan->drm->dev, i);
ret = nouveau_bo_vma_add(bo, client->vm, &fctx->dispc_vma[i]);
}
nouveau_bo_wr32(priv->bo, fifo->chid * 16/4, 0x00000000);
return ret;
}
static bool
nvc0_fence_suspend(struct nouveau_drm *drm)
{
struct nouveau_fifo *pfifo = nouveau_fifo(drm->device);
struct nvc0_fence_priv *priv = drm->fence;
int i;
priv->suspend = vmalloc((pfifo->max + 1) * sizeof(u32));
if (priv->suspend) {
for (i = 0; i <= pfifo->max; i++)
priv->suspend[i] = nouveau_bo_rd32(priv->bo, i);
}
return priv->suspend != NULL;
}
static void
nvc0_fence_resume(struct nouveau_drm *drm)
{
struct nouveau_fifo *pfifo = nouveau_fifo(drm->device);
struct nvc0_fence_priv *priv = drm->fence;
int i;
if (priv->suspend) {
for (i = 0; i <= pfifo->max; i++)
nouveau_bo_wr32(priv->bo, i, priv->suspend[i]);
vfree(priv->suspend);
priv->suspend = NULL;
}
}
static void
nvc0_fence_destroy(struct nouveau_drm *drm)
{
struct nvc0_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
nvc0_fence_create(struct nouveau_drm *drm)
{
struct nouveau_fifo *pfifo = nouveau_fifo(drm->device);
struct nvc0_fence_priv *priv;
int ret;
priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->base.dtor = nvc0_fence_destroy;
priv->base.suspend = nvc0_fence_suspend;
priv->base.resume = nvc0_fence_resume;
priv->base.context_new = nvc0_fence_context_new;
priv->base.context_del = nvc0_fence_context_del;
priv->base.emit = nvc0_fence_emit;
priv->base.sync = nvc0_fence_sync;
priv->base.read = nvc0_fence_read;
ret = nouveau_bo_new(drm->dev, 16 * (pfifo->max + 1), 0,
TTM_PL_FLAG_VRAM, 0, 0, NULL, &priv->bo);
if (ret == 0) {
ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM);
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)
nvc0_fence_destroy(drm);
return ret;
}
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