1/*
  2 * Copyright 2012 Red Hat Inc.
  3 *
  4 * Permission is hereby granted, free of charge, to any person obtaining a
  5 * copy of this software and associated documentation files (the "Software"),
  6 * to deal in the Software without restriction, including without limitation
  7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8 * and/or sell copies of the Software, and to permit persons to whom the
  9 * Software is furnished to do so, subject to the following conditions:
 10 *
 11 * The above copyright notice and this permission notice shall be included in
 12 * all copies or substantial portions of the Software.
 13 *
 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 20 * OTHER DEALINGS IN THE SOFTWARE.
 21 *
 22 * Authors: Ben Skeggs <bskeggs@redhat.com>
 23 */
 24
 25#include <nvif/os.h>
 26#include <nvif/class.h>
 27#include <nvif/cl0002.h>
 28
 29#include "nouveau_drm.h"
 30#include "nouveau_dma.h"
 31#include "nv10_fence.h"
 32
 33#include "nv50_display.h"
 34
 35static int
 36nv50_fence_context_new(struct nouveau_channel *chan)
 37{
 38	struct drm_device *dev = chan->drm->dev;
 39	struct nv10_fence_priv *priv = chan->drm->fence;
 40	struct nv10_fence_chan *fctx;
 41	struct ttm_mem_reg *mem = &priv->bo->bo.mem;
 42	u32 start = mem->start * PAGE_SIZE;
 43	u32 limit = start + mem->size - 1;
 44	int ret, i;
 45
 46	fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
 47	if (!fctx)
 48		return -ENOMEM;
 49
 50	nouveau_fence_context_new(chan, &fctx->base);
 51	fctx->base.emit = nv10_fence_emit;
 52	fctx->base.read = nv10_fence_read;
 53	fctx->base.sync = nv17_fence_sync;
 54
 55	ret = nvif_object_init(&chan->user, NvSema, NV_DMA_IN_MEMORY,
 56			       &(struct nv_dma_v0) {
 57					.target = NV_DMA_V0_TARGET_VRAM,
 58					.access = NV_DMA_V0_ACCESS_RDWR,
 59					.start = start,
 60					.limit = limit,
 61			       }, sizeof(struct nv_dma_v0),
 62			       &fctx->sema);
 63
 64	/* dma objects for display sync channel semaphore blocks */
 65	for (i = 0; !ret && i < dev->mode_config.num_crtc; i++) {
 66		struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i);
 67		u32 start = bo->bo.mem.start * PAGE_SIZE;
 68		u32 limit = start + bo->bo.mem.size - 1;
 69
 70		ret = nvif_object_init(&chan->user, NvEvoSema0 + i,
 71				       NV_DMA_IN_MEMORY, &(struct nv_dma_v0) {
 72						.target = NV_DMA_V0_TARGET_VRAM,
 73						.access = NV_DMA_V0_ACCESS_RDWR,
 74						.start = start,
 75						.limit = limit,
 76				       }, sizeof(struct nv_dma_v0),
 77				       &fctx->head[i]);
 78	}
 79
 80	if (ret)
 81		nv10_fence_context_del(chan);
 82	return ret;
 83}
 84
 85int
 86nv50_fence_create(struct nouveau_drm *drm)
 87{
 88	struct nv10_fence_priv *priv;
 89	int ret = 0;
 90
 91	priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
 92	if (!priv)
 93		return -ENOMEM;
 94
 95	priv->base.dtor = nv10_fence_destroy;
 96	priv->base.resume = nv17_fence_resume;
 97	priv->base.context_new = nv50_fence_context_new;
 98	priv->base.context_del = nv10_fence_context_del;
 99	priv->base.contexts = 127;
100	priv->base.context_base = fence_context_alloc(priv->base.contexts);
101	spin_lock_init(&priv->lock);
102
103	ret = nouveau_bo_new(drm->dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
104			     0, 0x0000, NULL, NULL, &priv->bo);
105	if (!ret) {
106		ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM, false);
107		if (!ret) {
108			ret = nouveau_bo_map(priv->bo);
109			if (ret)
110				nouveau_bo_unpin(priv->bo);
111		}
112		if (ret)
113			nouveau_bo_ref(NULL, &priv->bo);
114	}
115
116	if (ret) {
117		nv10_fence_destroy(drm);
118		return ret;
119	}
120
121	nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
122	return ret;
123}