path: root/drivers/gpu/drm/nouveau/nv50_display.c

/*
 * Copyright (C) 2008 Maarten Maathuis.
 * All Rights Reserved.
 *
 * 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 (including the
 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
 *
 */

#include "nv50_display.h"
#include "nouveau_crtc.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
#include "nouveau_fb.h"
#include "drm_crtc_helper.h"

static void
nv50_evo_channel_del(struct nouveau_channel **pchan)
{
	struct nouveau_channel *chan = *pchan;

	if (!chan)
		return;
	*pchan = NULL;

	nouveau_gpuobj_channel_takedown(chan);
	nouveau_bo_ref(NULL, &chan->pushbuf_bo);

	if (chan->user)
		iounmap(chan->user);

	kfree(chan);
}

static int
nv50_evo_dmaobj_new(struct nouveau_channel *evo, uint32_t class, uint32_t name,
		    uint32_t tile_flags, uint32_t magic_flags,
		    uint32_t offset, uint32_t limit)
{
	struct drm_nouveau_private *dev_priv = evo->dev->dev_private;
	struct drm_device *dev = evo->dev;
	struct nouveau_gpuobj *obj = NULL;
	int ret;

	ret = nouveau_gpuobj_new(dev, evo, 6*4, 32, 0, &obj);
	if (ret)
		return ret;
	obj->engine = NVOBJ_ENGINE_DISPLAY;

	ret = nouveau_gpuobj_ref_add(dev, evo, name, obj, NULL);
	if (ret) {
		nouveau_gpuobj_del(dev, &obj);
		return ret;
	}

	dev_priv->engine.instmem.prepare_access(dev, true);
	nv_wo32(dev, obj, 0, (tile_flags << 22) | (magic_flags << 16) | class);
	nv_wo32(dev, obj, 1, limit);
	nv_wo32(dev, obj, 2, offset);
	nv_wo32(dev, obj, 3, 0x00000000);
	nv_wo32(dev, obj, 4, 0x00000000);
	nv_wo32(dev, obj, 5, 0x00010000);
	dev_priv->engine.instmem.finish_access(dev);

	return 0;
}

static int
nv50_evo_channel_new(struct drm_device *dev, struct nouveau_channel **pchan)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_channel *chan;
	int ret;

	chan = kzalloc(sizeof(struct nouveau_channel), GFP_KERNEL);
	if (!chan)
		return -ENOMEM;
	*pchan = chan;

	chan->id = -1;
	chan->dev = dev;
	chan->user_get = 4;
	chan->user_put = 0;

	INIT_LIST_HEAD(&chan->ramht_refs);

	ret = nouveau_gpuobj_new_ref(dev, NULL, NULL, 0, 32768, 0x1000,
				     NVOBJ_FLAG_ZERO_ALLOC, &chan->ramin);
	if (ret) {
		NV_ERROR(dev, "Error allocating EVO channel memory: %d\n", ret);
		nv50_evo_channel_del(pchan);
		return ret;
	}

	ret = nouveau_mem_init_heap(&chan->ramin_heap, chan->ramin->gpuobj->
				    im_pramin->start, 32768);
	if (ret) {
		NV_ERROR(dev, "Error initialising EVO PRAMIN heap: %d\n", ret);
		nv50_evo_channel_del(pchan);
		return ret;
	}

	ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0, 4096, 16,
				     0, &chan->ramht);
	if (ret) {
		NV_ERROR(dev, "Unable to allocate EVO RAMHT: %d\n", ret);
		nv50_evo_channel_del(pchan);
		return ret;
	}

	if (dev_priv->chipset != 0x50) {
		ret = nv50_evo_dmaobj_new(chan, 0x3d, NvEvoFB16, 0x70, 0x19,
					  0, 0xffffffff);
		if (ret) {
			nv50_evo_channel_del(pchan);