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

/*
 * Copyright (C) 2008 Ben Skeggs.
 * 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 "drmP.h"
#include "drm.h"

#include "nouveau_drv.h"
#include "nouveau_drm.h"
#include "nouveau_dma.h"

#define nouveau_gem_pushbuf_sync(chan) 0

int
nouveau_gem_object_new(struct drm_gem_object *gem)
{
	return 0;
}

void
nouveau_gem_object_del(struct drm_gem_object *gem)
{
	struct nouveau_bo *nvbo = gem->driver_private;
	struct ttm_buffer_object *bo = &nvbo->bo;

	if (!nvbo)
		return;
	nvbo->gem = NULL;

	if (unlikely(nvbo->cpu_filp))
		ttm_bo_synccpu_write_release(bo);

	if (unlikely(nvbo->pin_refcnt)) {
		nvbo->pin_refcnt = 1;
		nouveau_bo_unpin(nvbo);
	}

	ttm_bo_unref(&bo);
}

int
nouveau_gem_new(struct drm_device *dev, struct nouveau_channel *chan,
		int size, int align, uint32_t flags, uint32_t tile_mode,
		uint32_t tile_flags, bool no_vm, bool mappable,
		struct nouveau_bo **pnvbo)
{
	struct nouveau_bo *nvbo;
	int ret;

	ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
			     tile_flags, no_vm, mappable, pnvbo);
	if (ret)
		return ret;
	nvbo = *pnvbo;

	nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
	if (!nvbo->gem) {
		nouveau_bo_ref(NULL, pnvbo);
		return -ENOMEM;
	}

	nvbo->bo.persistant_swap_storage = nvbo->gem->filp;
	nvbo->gem->driver_private = nvbo;
	return 0;
}

static int
nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
{
	struct nouveau_bo *nvbo = nouveau_gem_object(gem);

	if (nvbo->bo.mem.mem_type == TTM_PL_TT)
		rep->domain = NOUVEAU_GEM_DOMAIN_GART;
	else
		rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;

	rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
	rep->offset = nvbo->bo.offset;
	rep->map_handle = nvbo->mappable ? nvbo->bo.addr_space_offset : 0;
	rep->tile_mode = nvbo->tile_mode;
	rep->tile_flags = nvbo->tile_flags;
	return 0;
}

static bool
nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) {
	switch (tile_flags) {
	case 0x0000:
	case 0x1800:
	case 0x2800:
	case 0x4800:
	case 0x7000:
	case 0x7400:
	case 0x7a00:
	case 0xe000:
		break;
	default:
		NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags);
		return false;
	}

	return true;
}

int
nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
		      struct drm_file *file_priv)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct drm_nouveau_gem_new *req = data;
	struct nouveau_bo *nvbo = NULL;
	struct nouveau_channel *chan = NULL;
	uint32_t flags = 0;
	int ret = 0;

	NOUVEAU_CHECK_INITIALISED_WITH_RETURN;

	if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
		dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;

	if (req->channel_hint) {
		NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint,
						     file_priv, chan);
	}

	if (req->info.domain & NOUVEAU_GEM_DOMAIN_VRAM)
		flags |= TTM_PL_FLAG_VRAM;
	if (req->info.domain & NOUVEAU_GEM_DOMAIN_GART)
		flags |= TTM_PL_FLAG_TT;
	if