path: root/drivers/gpu/drm/nouveau/nvc0_graph.c

/*
 * Copyright 2010 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 <linux/firmware.h>
#include <linux/module.h>

#include "drmP.h"

#include "nouveau_drv.h"
#include "nouveau_mm.h"

#include "nvc0_graph.h"
#include "nvc0_grhub.fuc.h"
#include "nvc0_grgpc.fuc.h"

static void
nvc0_graph_ctxctl_debug_unit(struct drm_device *dev, u32 base)
{
	NV_INFO(dev, "PGRAPH: %06x - done 0x%08x\n", base,
		nv_rd32(dev, base + 0x400));
	NV_INFO(dev, "PGRAPH: %06x - stat 0x%08x 0x%08x 0x%08x 0x%08x\n", base,
		nv_rd32(dev, base + 0x800), nv_rd32(dev, base + 0x804),
		nv_rd32(dev, base + 0x808), nv_rd32(dev, base + 0x80c));
	NV_INFO(dev, "PGRAPH: %06x - stat 0x%08x 0x%08x 0x%08x 0x%08x\n", base,
		nv_rd32(dev, base + 0x810), nv_rd32(dev, base + 0x814),
		nv_rd32(dev, base + 0x818), nv_rd32(dev, base + 0x81c));
}

static void
nvc0_graph_ctxctl_debug(struct drm_device *dev)
{
	u32 gpcnr = nv_rd32(dev, 0x409604) & 0xffff;
	u32 gpc;

	nvc0_graph_ctxctl_debug_unit(dev, 0x409000);
	for (gpc = 0; gpc < gpcnr; gpc++)
		nvc0_graph_ctxctl_debug_unit(dev, 0x502000 + (gpc * 0x8000));
}

static int
nvc0_graph_load_context(struct nouveau_channel *chan)
{
	struct drm_device *dev = chan->dev;

	nv_wr32(dev, 0x409840, 0x00000030);
	nv_wr32(dev, 0x409500, 0x80000000 | chan->ramin->vinst >> 12);
	nv_wr32(dev, 0x409504, 0x00000003);
	if (!nv_wait(dev, 0x409800, 0x00000010, 0x00000010))
		NV_ERROR(dev, "PGRAPH: load_ctx timeout\n");

	return 0;
}

static int
nvc0_graph_unload_context_to(struct drm_device *dev, u64 chan)
{
	nv_wr32(dev, 0x409840, 0x00000003);
	nv_wr32(dev, 0x409500, 0x80000000 | chan >> 12);
	nv_wr32(dev, 0x409504, 0x00000009);
	if (!nv_wait(dev, 0x409800, 0x00000001, 0x00000000)) {
		NV_ERROR(dev, "PGRAPH: unload_ctx timeout\n");
		return -EBUSY;
	}

	return 0;
}

static int
nvc0_graph_construct_context(struct nouveau_channel *chan)
{
	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
	struct nvc0_graph_priv *priv = nv_engine(chan->dev, NVOBJ_ENGINE_GR);
	struct nvc0_graph_chan *grch = chan->engctx[NVOBJ_ENGINE_GR];
	struct drm_device *dev = chan->dev;
	int ret, i;
	u32 *ctx;

	ctx = kmalloc(priv->grctx_size, GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;

	if (!nouveau_ctxfw) {
		nv_wr32(dev, 0x409840, 0x80000000);
		nv_wr32(dev, 0x409500, 0x80000000 | chan->ramin->vinst >> 12);
		nv_wr32(dev, 0x409504, 0x00000001);
		if (!nv_wait(dev, 0x409800, 0x80000000, 0x80000000)) {
			NV_ERROR(dev, "PGRAPH: HUB_SET_CHAN timeout\n");
			nvc0_graph_ctxctl_debug(dev);
			ret = -EBUSY;
			goto err;
		}
	} else {
		nvc0_graph_load_context(chan);

		nv_wo32(grch->grctx, 0x1c, 1);
		nv_wo32(grch->grctx, 0x20, 0);
		nv_wo32(grch->grctx, 0x28, 0);
		nv_wo32(grch->grctx, 0x2c, 0);
		dev_priv->engine.instmem.flush(dev);
	}

	ret = nvc0_grctx_generate(chan);
	if (ret)
		goto err;

	if (!nouveau_ctxfw) {
		nv_wr32(dev, 0x409840, 0x80000000);
		nv_wr32(dev, 0x409500, 0x80000000 | chan->ramin->vinst >> 12);
		nv_wr32(dev, 0x409504, 0x00000002);
		if (!nv_wait(dev, 0x409800, 0x80000000, 0x80000000)) {
			NV_ERROR(dev, "PGRAPH: HUB_CTX_SAVE timeout\n");
			nvc0_graph_ctxctl_debug(dev);
			ret = -EBUSY;
			goto err;
		}
	} else {
		ret = nvc0_graph_unload_context_to(dev, chan->ramin->vinst);
		if (ret)
			goto err;
	}

	for (i