[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / nouveau / nouveau_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 "drmP.h"
#include "drm_crtc_helper.h"
#include "nouveau_drv.h"
#include "nouveau_fb.h"
#include "nouveau_fbcon.h"
#include "nouveau_hw.h"
#include "nouveau_crtc.h"
#include "nouveau_dma.h"
#include "nouveau_connector.h"
#include "nouveau_software.h"
#include <subdev/gpio.h>
#include "nouveau_fence.h"
#include "nv50_display.h"

static void
nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
{
	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);

	if (fb->nvbo)
		drm_gem_object_unreference_unlocked(fb->nvbo->gem);

	drm_framebuffer_cleanup(drm_fb);
	kfree(fb);
}

static int
nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
				       struct drm_file *file_priv,
				       unsigned int *handle)
{
	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);

	return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
}

static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
	.destroy = nouveau_user_framebuffer_destroy,
	.create_handle = nouveau_user_framebuffer_create_handle,
};

int
nouveau_framebuffer_init(struct drm_device *dev,
			 struct nouveau_framebuffer *nv_fb,
			 struct drm_mode_fb_cmd2 *mode_cmd,
			 struct nouveau_bo *nvbo)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct drm_framebuffer *fb = &nv_fb->base;
	int ret;

	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
	if (ret) {
		return ret;
	}

	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
	nv_fb->nvbo = nvbo;

	if (dev_priv->card_type >= NV_50) {
		u32 tile_flags = nouveau_bo_tile_layout(nvbo);
		if (tile_flags == 0x7a00 ||
		    tile_flags == 0xfe00)
			nv_fb->r_dma = NvEvoFB32;
		else
		if (tile_flags == 0x7000)
			nv_fb->r_dma = NvEvoFB16;
		else
			nv_fb->r_dma = NvEvoVRAM_LP;

		switch (fb->depth) {
		case  8: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_8; break;
		case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
		case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
		case 24:
		case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
		case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; break;
		default:
			 NV_ERROR(dev, "unknown depth %d\n", fb->depth);
			 return -EINVAL;
		}

		if (dev_priv->chipset == 0x50)
			nv_fb->r_format |= (tile_flags << 8);

		if (!tile_flags) {
			if (dev_priv->card_type < NV_D0)
				nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
			else
				nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
		} else {
			u32 mode = nvbo->tile_mode;
			if (dev_priv->card_type >= NV_C0)
				mode >>= 4;
			nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
		}
	}

	return 0;
}

static struct drm_framebuffer *
nouveau_user_framebuffer_create(struct drm_device *dev,
				struct drm_file *file_priv,
				struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct nouveau_framebuffer *nouveau_fb;
	struct drm_gem_object *gem;
	int ret;

	gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
	if (!gem)
		return ERR_PTR(-ENOENT);

	nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
	if (!nouveau_fb)
		return ERR_PTR(-ENOMEM);

	ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
	if (ret) {
		drm_gem_object_unreference(gem);
		return ERR_PTR(ret);
	}

	return &nouveau_fb->base;
}

static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
	.fb_create = nouveau_user_framebuffer_create,
	.output_poll_changed = nouveau_fbcon_output_poll_changed,
};


struct nouveau_drm_prop_enum_list {
	u8 gen_mask;
	int type;
	char *name;
};

static struct nouveau_drm_prop_enum_list underscan[] = {
	{ 6, UNDERSCAN_AUTO, "auto" },
	{ 6, UNDERSCAN_OFF, "off" },
	{ 6, UNDERSCAN_ON, "on" },
	{}
};

static struct nouveau_drm_prop_enum_list dither_mode[] = {
	{ 7, DITHERING_MODE_AUTO, "auto" },
	{ 7, DITHERING_MODE_OFF, "off" },
	{ 1, DITHERING_MODE_ON, "on" },
	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
	{}
};

static struct nouveau_drm_prop_enum_list dither_depth[] = {
	{ 6, DITHERING_DEPTH_AUTO, "auto" },
	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
	{}
};

#define PROP_ENUM(p,gen,n,list) do {                                           \
	struct nouveau_drm_prop_enum_list *l = (list);                         \
	int c = 0;                                                             \
	while (l->gen_mask) {                                                  \
		if (l->gen_mask & (1 << (gen)))                                \
			c++;                                                   \
		l++;                                                           \
	}                                                                      \
	if (c) {                                                               \
		p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
		l = (list);                                                    \
		c = 0;                                                         \
		while (p && l->gen_mask) {                                     \
			if (l->gen_mask & (1 << (gen))) {                      \
				drm_property_add_enum(p, c, l->type, l->name); \
				c++;                                           \
			}                                                      \
			l++;                                                   \
		}                                                              \
	}                                                                      \
} while(0)

int
nouveau_display_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_display_engine *disp = &dev_priv->engine.display;
	struct drm_connector *connector;
	int ret;

	ret = disp->init(dev);
	if (ret)
		return ret;

	/* power on internal panel if it's not already.  the init tables of
	 * some vbios default this to off for some reason, causing the
	 * panel to not work after resume
	 */
	if (nouveau_gpio_func_get(dev, DCB_GPIO_PANEL_POWER) == 0) {
		nouveau_gpio_func_set(dev, DCB_GPIO_PANEL_POWER, true);
		msleep(300);
	}

	/* enable polling for external displays */
	drm_kms_helper_poll_enable(dev);

	/* enable hotplug interrupts */
	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		struct nouveau_connector *conn = nouveau_connector(connector);
		nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, true);
	}

	return ret;
}

void
nouveau_display_fini(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_display_engine *disp = &dev_priv->engine.display;
	struct drm_connector *connector;

	/* disable hotplug interrupts */
	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		struct nouveau_connector *conn = nouveau_connector(connector);
		nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, false);
	}

	drm_kms_helper_poll_disable(dev);
	disp->fini(dev);
}

int
nouveau_display_create(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_display_engine *disp = &dev_priv->engine.display;
	int ret, gen;

	drm_mode_config_init(dev);
	drm_mode_create_scaling_mode_property(dev);
	drm_mode_create_dvi_i_properties(dev);

	if (dev_priv->card_type < NV_50)
		gen = 0;
	else
	if (dev_priv->card_type < NV_D0)
		gen = 1;
	else
		gen = 2;

	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);

	disp->underscan_hborder_property =
		drm_property_create_range(dev, 0, "underscan hborder", 0, 128);

	disp->underscan_vborder_property =
		drm_property_create_range(dev, 0, "underscan vborder", 0, 128);

	if (gen == 1) {
		disp->vibrant_hue_property =
			drm_property_create(dev, DRM_MODE_PROP_RANGE,
					    "vibrant hue", 2);
		disp->vibrant_hue_property->values[0] = 0;
		disp->vibrant_hue_property->values[1] = 180; /* -90..+90 */

		disp->color_vibrance_property =
			drm_property_create(dev, DRM_MODE_PROP_RANGE,
					    "color vibrance", 2);
		disp->color_vibrance_property->values[0] = 0;
		disp->color_vibrance_property->values[1] = 200; /* -100..+100 */
	}

	dev->mode_config.funcs = &nouveau_mode_config_funcs;
	dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);

	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;
	if (dev_priv->card_type < NV_10) {
		dev->mode_config.max_width = 2048;
		dev->mode_config.max_height = 2048;
	} else
	if (dev_priv->card_type < NV_50) {
		dev->mode_config.max_width = 4096;
		dev->mode_config.max_height = 4096;
	} else {
		dev->mode_config.max_width = 8192;
		dev->mode_config.max_height = 8192;
	}

	dev->mode_config.preferred_depth = 24;
	dev->mode_config.prefer_shadow = 1;

	drm_kms_helper_poll_init(dev);
	drm_kms_helper_poll_disable(dev);

	ret = disp->create(dev);
	if (ret)
		goto disp_create_err;

	if (dev->mode_config.num_crtc) {
		ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
		if (ret)
			goto vblank_err;
	}

	return 0;

vblank_err:
	disp->destroy(dev);
disp_create_err:
	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);
	return ret;
}

void
nouveau_display_destroy(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_display_engine *disp = &dev_priv->engine.display;

	drm_vblank_cleanup(dev);

	disp->destroy(dev);

	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);
}

int
nouveau_vblank_enable(struct drm_device *dev, int crtc)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (dev_priv->card_type >= NV_50)
		nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0,
			NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
	else
		NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
			    NV_PCRTC_INTR_0_VBLANK);

	return 0;
}

void
nouveau_vblank_disable(struct drm_device *dev, int crtc)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (dev_priv->card_type >= NV_50)
		nv_mask(dev, NV50_PDISPLAY_INTR_EN_1,
			NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
	else
		NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
}

static int
nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
			  struct nouveau_bo *new_bo)
{
	int ret;

	ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
	if (ret)
		return ret;

	ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
	if (ret)
		goto fail;

	ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
	if (ret)
		goto fail_unreserve;

	return 0;

fail_unreserve:
	ttm_bo_unreserve(&new_bo->bo);
fail:
	nouveau_bo_unpin(new_bo);
	return ret;
}

static void
nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
			    struct nouveau_bo *new_bo,
			    struct nouveau_fence *fence)
{
	nouveau_bo_fence(new_bo, fence);
	ttm_bo_unreserve(&new_bo->bo);

	nouveau_bo_fence(old_bo, fence);
	ttm_bo_unreserve(&old_bo->bo);

	nouveau_bo_unpin(old_bo);
}

static int
nouveau_page_flip_emit(struct nouveau_channel *chan,
		       struct nouveau_bo *old_bo,
		       struct nouveau_bo *new_bo,
		       struct nouveau_page_flip_state *s,
		       struct nouveau_fence **pfence)
{
	struct nouveau_software_chan *swch = chan->engctx[NVOBJ_ENGINE_SW];
	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
	struct drm_device *dev = chan->dev;
	unsigned long flags;
	int ret;

	/* Queue it to the pending list */
	spin_lock_irqsave(&dev->event_lock, flags);
	list_add_tail(&s->head, &swch->flip);
	spin_unlock_irqrestore(&dev->event_lock, flags);

	/* Synchronize with the old framebuffer */
	ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
	if (ret)
		goto fail;

	/* Emit the pageflip */
	ret = RING_SPACE(chan, 3);
	if (ret)
		goto fail;

	if (dev_priv->card_type < NV_C0) {
		BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
		OUT_RING  (chan, 0x00000000);
		OUT_RING  (chan, 0x00000000);
	} else {
		BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
		OUT_RING  (chan, 0);
		BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
	}
	FIRE_RING (chan);

	ret = nouveau_fence_new(chan, pfence);
	if (ret)
		goto fail;

	return 0;
fail:
	spin_lock_irqsave(&dev->event_lock, flags);
	list_del(&s->head);
	spin_unlock_irqrestore(&dev->event_lock, flags);
	return ret;
}

int
nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
		       struct drm_pending_vblank_event *event)
{
	struct drm_device *dev = crtc->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
	struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
	struct nouveau_page_flip_state *s;
	struct nouveau_channel *chan = NULL;
	struct nouveau_fence *fence;
	int ret;

	if (!dev_priv->channel)
		return -ENODEV;

	s = kzalloc(sizeof(*s), GFP_KERNEL);
	if (!s)
		return -ENOMEM;

	/* Don't let the buffers go away while we flip */
	ret = nouveau_page_flip_reserve(old_bo, new_bo);
	if (ret)
		goto fail_free;

	/* Initialize a page flip struct */
	*s = (struct nouveau_page_flip_state)
		{ { }, event, nouveau_crtc(crtc)->index,
		  fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
		  new_bo->bo.offset };

	/* Choose the channel the flip will be handled in */
	fence = new_bo->bo.sync_obj;
	if (fence)
		chan = nouveau_channel_get_unlocked(fence->channel);
	if (!chan)
		chan = nouveau_channel_get_unlocked(dev_priv->channel);
	mutex_lock(&chan->mutex);

	/* Emit a page flip */
	if (dev_priv->card_type >= NV_50) {
		if (dev_priv->card_type >= NV_D0)
			ret = nvd0_display_flip_next(crtc, fb, chan, 0);
		else
			ret = nv50_display_flip_next(crtc, fb, chan);
		if (ret) {
			nouveau_channel_put(&chan);
			goto fail_unreserve;
		}
	}

	ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
	nouveau_channel_put(&chan);
	if (ret)
		goto fail_unreserve;

	/* Update the crtc struct and cleanup */
	crtc->fb = fb;

	nouveau_page_flip_unreserve(old_bo, new_bo, fence);
	nouveau_fence_unref(&fence);
	return 0;

fail_unreserve:
	nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
fail_free:
	kfree(s);
	return ret;
}

int
nouveau_finish_page_flip(struct nouveau_channel *chan,
			 struct nouveau_page_flip_state *ps)
{
	struct nouveau_software_chan *swch = chan->engctx[NVOBJ_ENGINE_SW];
	struct drm_device *dev = chan->dev;
	struct nouveau_page_flip_state *s;
	unsigned long flags;

	spin_lock_irqsave(&dev->event_lock, flags);

	if (list_empty(&swch->flip)) {
		NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id);
		spin_unlock_irqrestore(&dev->event_lock, flags);
		return -EINVAL;
	}

	s = list_first_entry(&swch->flip, struct nouveau_page_flip_state, head);
	if (s->event) {
		struct drm_pending_vblank_event *e = s->event;
		struct timeval now;

		do_gettimeofday(&now);
		e->event.sequence = 0;
		e->event.tv_sec = now.tv_sec;
		e->event.tv_usec = now.tv_usec;
		list_add_tail(&e->base.link, &e->base.file_priv->event_list);
		wake_up_interruptible(&e->base.file_priv->event_wait);
	}

	list_del(&s->head);
	if (ps)
		*ps = *s;
	kfree(s);

	spin_unlock_irqrestore(&dev->event_lock, flags);
	return 0;
}

int
nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
			    struct drm_mode_create_dumb *args)
{
	struct nouveau_bo *bo;
	int ret;

	args->pitch = roundup(args->width * (args->bpp / 8), 256);
	args->size = args->pitch * args->height;
	args->size = roundup(args->size, PAGE_SIZE);

	ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
	if (ret)
		return ret;

	ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
	drm_gem_object_unreference_unlocked(bo->gem);
	return ret;
}

int
nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
			     uint32_t handle)
{
	return drm_gem_handle_delete(file_priv, handle);
}

int
nouveau_display_dumb_map_offset(struct drm_file *file_priv,
				struct drm_device *dev,
				uint32_t handle, uint64_t *poffset)
{
	struct drm_gem_object *gem;

	gem = drm_gem_object_lookup(dev, file_priv, handle);
	if (gem) {
		struct nouveau_bo *bo = gem->driver_private;
		*poffset = bo->bo.addr_space_offset;
		drm_gem_object_unreference_unlocked(gem);
		return 0;
	}

	return -ENOENT;
}
Commit	Line	Data
6ee73861 BS	1	/*
	2	* Copyright (C) 2008 Maarten Maathuis.
	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining
	6	* a copy of this software and associated documentation files (the
	7	* "Software"), to deal in the Software without restriction, including
	8	* without limitation the rights to use, copy, modify, merge, publish,
	9	* distribute, sublicense, and/or sell copies of the Software, and to
	10	* permit persons to whom the Software is furnished to do so, subject to
	11	* the following conditions:
	12	*
	13	* The above copyright notice and this permission notice (including the
	14	* next paragraph) shall be included in all copies or substantial
	15	* portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	20	* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
	21	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	22	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	23	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	24	*
	25	*/
	26
	27	#include "drmP.h"
	28	#include "drm_crtc_helper.h"
	29	#include "nouveau_drv.h"
	30	#include "nouveau_fb.h"
	31	#include "nouveau_fbcon.h"
042206c0	32	#include "nouveau_hw.h"
332b242f FJ	33	#include "nouveau_crtc.h"
332b242f FJ	34	#include "nouveau_dma.h"
de691855	35	#include "nouveau_connector.h"
20abd163	36	#include "nouveau_software.h"
02a841d4	37	#include <subdev/gpio.h>
d375e7d5	38	#include "nouveau_fence.h"
45c4e0aa	39	#include "nv50_display.h"
6ee73861 BS	40
	41	static void
	42	nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
	43	{
	44	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
6ee73861	45
bc9025bd LB	46	if (fb->nvbo)
bc9025bd LB	47	drm_gem_object_unreference_unlocked(fb->nvbo->gem);
6ee73861 BS	48
	49	drm_framebuffer_cleanup(drm_fb);
	50	kfree(fb);
	51	}
	52
	53	static int
	54	nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
	55	struct drm_file *file_priv,
	56	unsigned int *handle)
	57	{
	58	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
	59
	60	return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
	61	}
	62
	63	static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
	64	.destroy = nouveau_user_framebuffer_destroy,
	65	.create_handle = nouveau_user_framebuffer_create_handle,
	66	};
	67
38651674	68	int
45c4e0aa BS	69	nouveau_framebuffer_init(struct drm_device *dev,
45c4e0aa BS	70	struct nouveau_framebuffer *nv_fb,
308e5bcb	71	struct drm_mode_fb_cmd2 *mode_cmd,
45c4e0aa	72	struct nouveau_bo *nvbo)
6ee73861	73	{
45c4e0aa BS	74	struct drm_nouveau_private *dev_priv = dev->dev_private;
45c4e0aa BS	75	struct drm_framebuffer *fb = &nv_fb->base;
6ee73861 BS	76	int ret;
6ee73861 BS	77
45c4e0aa	78	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
6ee73861	79	if (ret) {
38651674	80	return ret;
6ee73861 BS	81	}
6ee73861 BS	82
45c4e0aa BS	83	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
	84	nv_fb->nvbo = nvbo;
	85
	86	if (dev_priv->card_type >= NV_50) {
	87	u32 tile_flags = nouveau_bo_tile_layout(nvbo);
	88	if (tile_flags == 0x7a00 \|\|
	89	tile_flags == 0xfe00)
	90	nv_fb->r_dma = NvEvoFB32;
	91	else
	92	if (tile_flags == 0x7000)
	93	nv_fb->r_dma = NvEvoFB16;
	94	else
	95	nv_fb->r_dma = NvEvoVRAM_LP;
	96
	97	switch (fb->depth) {
	98	case 8: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_8; break;
	99	case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
	100	case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
	101	case 24:
	102	case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
	103	case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; break;
	104	default:
	105	NV_ERROR(dev, "unknown depth %d\n", fb->depth);
	106	return -EINVAL;
	107	}
	108
	109	if (dev_priv->chipset == 0x50)
	110	nv_fb->r_format \|= (tile_flags << 8);
	111
2fad3d5e BS	112	if (!tile_flags) {
2fad3d5e BS	113	if (dev_priv->card_type < NV_D0)
01f2c773	114	nv_fb->r_pitch = 0x00100000 \| fb->pitches[0];
2fad3d5e	115	else
01f2c773	116	nv_fb->r_pitch = 0x01000000 \| fb->pitches[0];
2fad3d5e	117	} else {
45c4e0aa BS	118	u32 mode = nvbo->tile_mode;
	119	if (dev_priv->card_type >= NV_C0)
	120	mode >>= 4;
01f2c773	121	nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) \| mode;
45c4e0aa BS	122	}
	123	}
	124
38651674	125	return 0;
6ee73861 BS	126	}
	127
	128	static struct drm_framebuffer *
	129	nouveau_user_framebuffer_create(struct drm_device *dev,
	130	struct drm_file *file_priv,
308e5bcb	131	struct drm_mode_fb_cmd2 *mode_cmd)
6ee73861	132	{
38651674	133	struct nouveau_framebuffer *nouveau_fb;
6ee73861	134	struct drm_gem_object *gem;
38651674	135	int ret;
6ee73861	136
308e5bcb	137	gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
6ee73861	138	if (!gem)
cce13ff7	139	return ERR_PTR(-ENOENT);
6ee73861	140
38651674 DA	141	nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
38651674 DA	142	if (!nouveau_fb)
cce13ff7	143	return ERR_PTR(-ENOMEM);
38651674 DA	144
	145	ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
	146	if (ret) {
6ee73861	147	drm_gem_object_unreference(gem);
cce13ff7	148	return ERR_PTR(ret);
6ee73861 BS	149	}
6ee73861 BS	150
38651674	151	return &nouveau_fb->base;
6ee73861 BS	152	}
6ee73861 BS	153
27d5030a	154	static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
6ee73861	155	.fb_create = nouveau_user_framebuffer_create,
eb1f8e4f	156	.output_poll_changed = nouveau_fbcon_output_poll_changed,
6ee73861 BS	157	};
6ee73861 BS	158
b29caa58	159
4a67d391	160	struct nouveau_drm_prop_enum_list {
de691855	161	u8 gen_mask;
b29caa58 BS	162	int type;
	163	char *name;
	164	};
	165
4a67d391	166	static struct nouveau_drm_prop_enum_list underscan[] = {
92854622 BS	167	{ 6, UNDERSCAN_AUTO, "auto" },
	168	{ 6, UNDERSCAN_OFF, "off" },
	169	{ 6, UNDERSCAN_ON, "on" },
de691855	170	{}
b29caa58 BS	171	};
b29caa58 BS	172
4a67d391	173	static struct nouveau_drm_prop_enum_list dither_mode[] = {
de691855 BS	174	{ 7, DITHERING_MODE_AUTO, "auto" },
	175	{ 7, DITHERING_MODE_OFF, "off" },
	176	{ 1, DITHERING_MODE_ON, "on" },
	177	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
	178	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
	179	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
	180	{}
	181	};
	182
4a67d391	183	static struct nouveau_drm_prop_enum_list dither_depth[] = {
de691855 BS	184	{ 6, DITHERING_DEPTH_AUTO, "auto" },
	185	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
	186	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
	187	{}
	188	};
	189
	190	#define PROP_ENUM(p,gen,n,list) do { \
4a67d391	191	struct nouveau_drm_prop_enum_list *l = (list); \
de691855 BS	192	int c = 0; \
	193	while (l->gen_mask) { \
	194	if (l->gen_mask & (1 << (gen))) \
	195	c++; \
	196	l++; \
	197	} \
	198	if (c) { \
	199	p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c); \
	200	l = (list); \
	201	c = 0; \
	202	while (p && l->gen_mask) { \
	203	if (l->gen_mask & (1 << (gen))) { \
	204	drm_property_add_enum(p, c, l->type, l->name); \
	205	c++; \
	206	} \
	207	l++; \
	208	} \
	209	} \
	210	} while(0)
	211
f62b27db BS	212	int
	213	nouveau_display_init(struct drm_device *dev)
	214	{
	215	struct drm_nouveau_private *dev_priv = dev->dev_private;
	216	struct nouveau_display_engine *disp = &dev_priv->engine.display;
52c4d767	217	struct drm_connector *connector;
f62b27db BS	218	int ret;
	219
	220	ret = disp->init(dev);
52c4d767 BS	221	if (ret)
	222	return ret;
	223
7df898b1 BS	224	/* power on internal panel if it's not already. the init tables of
	225	* some vbios default this to off for some reason, causing the
	226	* panel to not work after resume
	227	*/
	228	if (nouveau_gpio_func_get(dev, DCB_GPIO_PANEL_POWER) == 0) {
	229	nouveau_gpio_func_set(dev, DCB_GPIO_PANEL_POWER, true);
	230	msleep(300);
	231	}
	232
	233	/* enable polling for external displays */
52c4d767 BS	234	drm_kms_helper_poll_enable(dev);
	235
	236	/* enable hotplug interrupts */
	237	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
	238	struct nouveau_connector *conn = nouveau_connector(connector);
	239	nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, true);
f62b27db BS	240	}
	241
	242	return ret;
	243	}
	244
	245	void
	246	nouveau_display_fini(struct drm_device *dev)
	247	{
	248	struct drm_nouveau_private *dev_priv = dev->dev_private;
	249	struct nouveau_display_engine *disp = &dev_priv->engine.display;
52c4d767 BS	250	struct drm_connector *connector;
	251
	252	/* disable hotplug interrupts */
	253	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
	254	struct nouveau_connector *conn = nouveau_connector(connector);
	255	nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, false);
	256	}
f62b27db BS	257
	258	drm_kms_helper_poll_disable(dev);
	259	disp->fini(dev);
	260	}
	261
27d5030a BS	262	int
	263	nouveau_display_create(struct drm_device *dev)
	264	{
	265	struct drm_nouveau_private *dev_priv = dev->dev_private;
	266	struct nouveau_display_engine *disp = &dev_priv->engine.display;
de691855	267	int ret, gen;
27d5030a BS	268
	269	drm_mode_config_init(dev);
	270	drm_mode_create_scaling_mode_property(dev);
4ceca5f8	271	drm_mode_create_dvi_i_properties(dev);
de691855 BS	272
	273	if (dev_priv->card_type < NV_50)
	274	gen = 0;
	275	else
	276	if (dev_priv->card_type < NV_D0)
	277	gen = 1;
	278	else
	279	gen = 2;
	280
	281	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
	282	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
	283	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
b29caa58 BS	284
b29caa58 BS	285	disp->underscan_hborder_property =
d9bc3c02	286	drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
b29caa58 BS	287
b29caa58 BS	288	disp->underscan_vborder_property =
d9bc3c02	289	drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
b29caa58	290
df26bc9c CB	291	if (gen == 1) {
	292	disp->vibrant_hue_property =
	293	drm_property_create(dev, DRM_MODE_PROP_RANGE,
	294	"vibrant hue", 2);
	295	disp->vibrant_hue_property->values[0] = 0;
	296	disp->vibrant_hue_property->values[1] = 180; /* -90..+90 */
	297
	298	disp->color_vibrance_property =
	299	drm_property_create(dev, DRM_MODE_PROP_RANGE,
	300	"color vibrance", 2);
	301	disp->color_vibrance_property->values[0] = 0;
	302	disp->color_vibrance_property->values[1] = 200; /* -100..+100 */
	303	}
	304
e6ecefaa	305	dev->mode_config.funcs = &nouveau_mode_config_funcs;
27d5030a BS	306	dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
	307
	308	dev->mode_config.min_width = 0;
	309	dev->mode_config.min_height = 0;
	310	if (dev_priv->card_type < NV_10) {
	311	dev->mode_config.max_width = 2048;
	312	dev->mode_config.max_height = 2048;
	313	} else
	314	if (dev_priv->card_type < NV_50) {
	315	dev->mode_config.max_width = 4096;
	316	dev->mode_config.max_height = 4096;
	317	} else {
	318	dev->mode_config.max_width = 8192;
	319	dev->mode_config.max_height = 8192;
	320	}
	321
f1377998 DA	322	dev->mode_config.preferred_depth = 24;
	323	dev->mode_config.prefer_shadow = 1;
	324
f62b27db BS	325	drm_kms_helper_poll_init(dev);
	326	drm_kms_helper_poll_disable(dev);
	327
27d5030a BS	328	ret = disp->create(dev);
27d5030a BS	329	if (ret)
5ace2c9d	330	goto disp_create_err;
27d5030a	331
f62b27db BS	332	if (dev->mode_config.num_crtc) {
	333	ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
	334	if (ret)
5ace2c9d	335	goto vblank_err;
f62b27db BS	336	}
f62b27db BS	337
5ace2c9d MS	338	return 0;
	339
	340	vblank_err:
	341	disp->destroy(dev);
	342	disp_create_err:
	343	drm_kms_helper_poll_fini(dev);
	344	drm_mode_config_cleanup(dev);
2a44e499	345	return ret;
27d5030a BS	346	}
	347
	348	void
	349	nouveau_display_destroy(struct drm_device *dev)
	350	{
	351	struct drm_nouveau_private *dev_priv = dev->dev_private;
	352	struct nouveau_display_engine *disp = &dev_priv->engine.display;
	353
f62b27db BS	354	drm_vblank_cleanup(dev);
f62b27db BS	355
27d5030a	356	disp->destroy(dev);
f62b27db BS	357
f62b27db BS	358	drm_kms_helper_poll_fini(dev);
27d5030a BS	359	drm_mode_config_cleanup(dev);
	360	}
	361
042206c0 FJ	362	int
	363	nouveau_vblank_enable(struct drm_device *dev, int crtc)
	364	{
	365	struct drm_nouveau_private *dev_priv = dev->dev_private;
	366
	367	if (dev_priv->card_type >= NV_50)
	368	nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0,
	369	NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
	370	else
	371	NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
	372	NV_PCRTC_INTR_0_VBLANK);
	373
	374	return 0;
	375	}
	376
	377	void
	378	nouveau_vblank_disable(struct drm_device *dev, int crtc)
	379	{
	380	struct drm_nouveau_private *dev_priv = dev->dev_private;
	381
	382	if (dev_priv->card_type >= NV_50)
	383	nv_mask(dev, NV50_PDISPLAY_INTR_EN_1,
	384	NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
	385	else
	386	NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
	387	}
332b242f FJ	388
	389	static int
	390	nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
	391	struct nouveau_bo *new_bo)
	392	{
	393	int ret;
	394
	395	ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
	396	if (ret)
	397	return ret;
	398
	399	ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
	400	if (ret)
	401	goto fail;
	402
	403	ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
	404	if (ret)
	405	goto fail_unreserve;
	406
	407	return 0;
	408
	409	fail_unreserve:
	410	ttm_bo_unreserve(&new_bo->bo);
	411	fail:
	412	nouveau_bo_unpin(new_bo);
	413	return ret;
	414	}
	415
	416	static void
	417	nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
	418	struct nouveau_bo *new_bo,
	419	struct nouveau_fence *fence)
	420	{
	421	nouveau_bo_fence(new_bo, fence);
	422	ttm_bo_unreserve(&new_bo->bo);
	423
	424	nouveau_bo_fence(old_bo, fence);
	425	ttm_bo_unreserve(&old_bo->bo);
	426
	427	nouveau_bo_unpin(old_bo);
	428	}
	429
	430	static int
	431	nouveau_page_flip_emit(struct nouveau_channel *chan,
	432	struct nouveau_bo *old_bo,
	433	struct nouveau_bo *new_bo,
	434	struct nouveau_page_flip_state *s,
	435	struct nouveau_fence **pfence)
	436	{
20abd163	437	struct nouveau_software_chan *swch = chan->engctx[NVOBJ_ENGINE_SW];
bd2f2037	438	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
332b242f FJ	439	struct drm_device *dev = chan->dev;
	440	unsigned long flags;
	441	int ret;
	442
	443	/* Queue it to the pending list */
	444	spin_lock_irqsave(&dev->event_lock, flags);
20abd163	445	list_add_tail(&s->head, &swch->flip);
332b242f FJ	446	spin_unlock_irqrestore(&dev->event_lock, flags);
	447
	448	/* Synchronize with the old framebuffer */
	449	ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
	450	if (ret)
	451	goto fail;
	452
	453	/* Emit the pageflip */
d5316e25	454	ret = RING_SPACE(chan, 3);
332b242f FJ	455	if (ret)
	456	goto fail;
	457
d5316e25	458	if (dev_priv->card_type < NV_C0) {
6d597027	459	BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
d5316e25 BS	460	OUT_RING (chan, 0x00000000);
	461	OUT_RING (chan, 0x00000000);
	462	} else {
6d597027	463	BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
5e120f6e	464	OUT_RING (chan, 0);
6d597027	465	BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
d5316e25	466	}
bd2f2037	467	FIRE_RING (chan);
332b242f	468
d375e7d5	469	ret = nouveau_fence_new(chan, pfence);
332b242f FJ	470	if (ret)
	471	goto fail;
	472
	473	return 0;
	474	fail:
	475	spin_lock_irqsave(&dev->event_lock, flags);
	476	list_del(&s->head);
	477	spin_unlock_irqrestore(&dev->event_lock, flags);
	478	return ret;
	479	}
	480
	481	int
	482	nouveau_crtc_page_flip(struct drm_crtc crtc, struct drm_framebuffer fb,
	483	struct drm_pending_vblank_event *event)
	484	{
	485	struct drm_device *dev = crtc->dev;
	486	struct drm_nouveau_private *dev_priv = dev->dev_private;
	487	struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
	488	struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
	489	struct nouveau_page_flip_state *s;
d375e7d5	490	struct nouveau_channel *chan = NULL;
332b242f FJ	491	struct nouveau_fence *fence;
	492	int ret;
	493
a82dd49f	494	if (!dev_priv->channel)
332b242f FJ	495	return -ENODEV;
	496
	497	s = kzalloc(sizeof(*s), GFP_KERNEL);
	498	if (!s)
	499	return -ENOMEM;
	500
	501	/* Don't let the buffers go away while we flip */
	502	ret = nouveau_page_flip_reserve(old_bo, new_bo);
	503	if (ret)
	504	goto fail_free;
	505
	506	/* Initialize a page flip struct */
	507	*s = (struct nouveau_page_flip_state)
2503c6fa	508	{ { }, event, nouveau_crtc(crtc)->index,
01f2c773	509	fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
332b242f FJ	510	new_bo->bo.offset };
	511
	512	/* Choose the channel the flip will be handled in */
d375e7d5 BS	513	fence = new_bo->bo.sync_obj;
	514	if (fence)
	515	chan = nouveau_channel_get_unlocked(fence->channel);
332b242f FJ	516	if (!chan)
	517	chan = nouveau_channel_get_unlocked(dev_priv->channel);
	518	mutex_lock(&chan->mutex);
	519
	520	/* Emit a page flip */
d7117e0d	521	if (dev_priv->card_type >= NV_50) {
3376ee37 BS	522	if (dev_priv->card_type >= NV_D0)
	523	ret = nvd0_display_flip_next(crtc, fb, chan, 0);
	524	else
	525	ret = nv50_display_flip_next(crtc, fb, chan);
d7117e0d BS	526	if (ret) {
	527	nouveau_channel_put(&chan);
	528	goto fail_unreserve;
	529	}
	530	}
	531
332b242f FJ	532	ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
	533	nouveau_channel_put(&chan);
	534	if (ret)
	535	goto fail_unreserve;
	536
	537	/* Update the crtc struct and cleanup */
	538	crtc->fb = fb;
	539
	540	nouveau_page_flip_unreserve(old_bo, new_bo, fence);
	541	nouveau_fence_unref(&fence);
	542	return 0;
	543
	544	fail_unreserve:
	545	nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
	546	fail_free:
	547	kfree(s);
	548	return ret;
	549	}
	550
	551	int
	552	nouveau_finish_page_flip(struct nouveau_channel *chan,
	553	struct nouveau_page_flip_state *ps)
	554	{
20abd163	555	struct nouveau_software_chan *swch = chan->engctx[NVOBJ_ENGINE_SW];
332b242f FJ	556	struct drm_device *dev = chan->dev;
	557	struct nouveau_page_flip_state *s;
	558	unsigned long flags;
	559
	560	spin_lock_irqsave(&dev->event_lock, flags);
	561
20abd163	562	if (list_empty(&swch->flip)) {
332b242f FJ	563	NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id);
	564	spin_unlock_irqrestore(&dev->event_lock, flags);
	565	return -EINVAL;
	566	}
	567
20abd163	568	s = list_first_entry(&swch->flip, struct nouveau_page_flip_state, head);
332b242f FJ	569	if (s->event) {
	570	struct drm_pending_vblank_event *e = s->event;
	571	struct timeval now;
	572
	573	do_gettimeofday(&now);
	574	e->event.sequence = 0;
	575	e->event.tv_sec = now.tv_sec;
	576	e->event.tv_usec = now.tv_usec;
	577	list_add_tail(&e->base.link, &e->base.file_priv->event_list);
	578	wake_up_interruptible(&e->base.file_priv->event_wait);
	579	}
	580
	581	list_del(&s->head);
d7117e0d BS	582	if (ps)
d7117e0d BS	583	ps = s;
332b242f FJ	584	kfree(s);
	585
	586	spin_unlock_irqrestore(&dev->event_lock, flags);
	587	return 0;
	588	}
33dbc27f BS	589
	590	int
	591	nouveau_display_dumb_create(struct drm_file file_priv, struct drm_device dev,
	592	struct drm_mode_create_dumb *args)
	593	{
	594	struct nouveau_bo *bo;
	595	int ret;
	596
	597	args->pitch = roundup(args->width * (args->bpp / 8), 256);
	598	args->size = args->pitch * args->height;
	599	args->size = roundup(args->size, PAGE_SIZE);
	600
610bd7da	601	ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
33dbc27f BS	602	if (ret)
	603	return ret;
	604
	605	ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
	606	drm_gem_object_unreference_unlocked(bo->gem);
	607	return ret;
	608	}
	609
	610	int
	611	nouveau_display_dumb_destroy(struct drm_file file_priv, struct drm_device dev,
	612	uint32_t handle)
	613	{
	614	return drm_gem_handle_delete(file_priv, handle);
	615	}
	616
	617	int
	618	nouveau_display_dumb_map_offset(struct drm_file *file_priv,
	619	struct drm_device *dev,
	620	uint32_t handle, uint64_t *poffset)
	621	{
	622	struct drm_gem_object *gem;
	623
	624	gem = drm_gem_object_lookup(dev, file_priv, handle);
	625	if (gem) {
	626	struct nouveau_bo *bo = gem->driver_private;
	627	*poffset = bo->bo.addr_space_offset;
	628	drm_gem_object_unreference_unlocked(gem);
	629	return 0;
	630	}
	631
	632	return -ENOENT;
	633	}