[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ldu.c

/**************************************************************************
 *
 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
 * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS 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 "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>


#define vmw_crtc_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.crtc)
#define vmw_encoder_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.encoder)
#define vmw_connector_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.connector)

struct vmw_legacy_display {
	struct list_head active;

	unsigned num_active;
	unsigned last_num_active;

	struct vmw_framebuffer *fb;
};

/**
 * Display unit using the legacy register interface.
 */
struct vmw_legacy_display_unit {
	struct vmw_display_unit base;

	struct list_head active;
};

static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
{
	list_del_init(&ldu->active);
	vmw_du_cleanup(&ldu->base);
	kfree(ldu);
}


/*
 * Legacy Display Unit CRTC functions
 */

static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
{
	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
}

static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
{
	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	struct vmw_legacy_display_unit *entry;
	struct drm_framebuffer *fb = NULL;
	struct drm_crtc *crtc = NULL;
	int i = 0;

	/* If there is no display topology the host just assumes
	 * that the guest will set the same layout as the host.
	 */
	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
		int w = 0, h = 0;
		list_for_each_entry(entry, &lds->active, active) {
			crtc = &entry->base.crtc;
			w = max(w, crtc->x + crtc->mode.hdisplay);
			h = max(h, crtc->y + crtc->mode.vdisplay);
			i++;
		}

		if (crtc == NULL)
			return 0;
		fb = entry->base.crtc.primary->fb;

		return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
					  fb->format->cpp[0] * 8,
					  fb->format->depth);
	}

	if (!list_empty(&lds->active)) {
		entry = list_entry(lds->active.next, typeof(*entry), active);
		fb = entry->base.crtc.primary->fb;

		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
				   fb->format->cpp[0] * 8, fb->format->depth);
	}

	/* Make sure we always show something. */
	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
		  lds->num_active ? lds->num_active : 1);

	i = 0;
	list_for_each_entry(entry, &lds->active, active) {
		crtc = &entry->base.crtc;

		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);

		i++;
	}

	BUG_ON(i != lds->num_active);

	lds->last_num_active = lds->num_active;

	return 0;
}

static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
			      struct vmw_legacy_display_unit *ldu)
{
	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	if (list_empty(&ldu->active))
		return 0;

	/* Must init otherwise list_empty(&ldu->active) will not work. */
	list_del_init(&ldu->active);
	if (--(ld->num_active) == 0) {
		BUG_ON(!ld->fb);
		if (ld->fb->unpin)
			ld->fb->unpin(ld->fb);
		ld->fb = NULL;
	}

	return 0;
}

static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
			      struct vmw_legacy_display_unit *ldu,
			      struct vmw_framebuffer *vfb)
{
	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	struct vmw_legacy_display_unit *entry;
	struct list_head *at;

	BUG_ON(!ld->num_active && ld->fb);
	if (vfb != ld->fb) {
		if (ld->fb && ld->fb->unpin)
			ld->fb->unpin(ld->fb);
		vmw_svga_enable(vmw_priv);
		if (vfb->pin)
			vfb->pin(vfb);
		ld->fb = vfb;
	}

	if (!list_empty(&ldu->active))
		return 0;

	at = &ld->active;
	list_for_each_entry(entry, &ld->active, active) {
		if (entry->base.unit > ldu->base.unit)
			break;

		at = &entry->active;
	}

	list_add(&ldu->active, at);

	ld->num_active++;

	return 0;
}

/**
 * vmw_ldu_crtc_mode_set_nofb - Enable svga
 *
 * @crtc: CRTC associated with the new screen
 *
 * For LDU, just enable the svga
 */
static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
}

/**
 * vmw_ldu_crtc_helper_prepare - Noop
 *
 * @crtc: CRTC associated with the new screen
 *
 * Prepares the CRTC for a mode set, but we don't need to do anything here.
 *
 */
static void vmw_ldu_crtc_helper_prepare(struct drm_crtc *crtc)
{
}

/**
 * vmw_ldu_crtc_helper_commit - Noop
 *
 * @crtc: CRTC associated with the new screen
 *
 * This is called after a mode set has been completed.  Here's
 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
 * but since for LDU the display plane is closely tied to the
 * CRTC, it makes more sense to do those at plane update time.
 */
static void vmw_ldu_crtc_helper_commit(struct drm_crtc *crtc)
{
	struct vmw_private *dev_priv;
	struct vmw_legacy_display_unit *ldu;
	struct vmw_framebuffer *vfb;
	struct drm_framebuffer *fb;


	ldu = vmw_crtc_to_ldu(crtc);
	dev_priv = vmw_priv(crtc->dev);
	fb       = crtc->primary->fb;

	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;

	if (vfb)
		vmw_ldu_add_active(dev_priv, ldu, vfb);
	else
		vmw_ldu_del_active(dev_priv, ldu);
}

/**
 * vmw_ldu_crtc_helper_disable - Turns off CRTC
 *
 * @crtc: CRTC to be turned off
 */
static void vmw_ldu_crtc_helper_disable(struct drm_crtc *crtc)
{
}

static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
{
	struct vmw_private *dev_priv;
	struct vmw_legacy_display_unit *ldu;
	struct drm_connector *connector;
	struct drm_display_mode *mode;
	struct drm_encoder *encoder;
	struct vmw_framebuffer *vfb;
	struct drm_framebuffer *fb;
	struct drm_crtc *crtc;

	if (!set)
		return -EINVAL;

	if (!set->crtc)
		return -EINVAL;

	/* get the ldu */
	crtc = set->crtc;
	ldu = vmw_crtc_to_ldu(crtc);
	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	dev_priv = vmw_priv(crtc->dev);

	if (set->num_connectors > 1) {
		DRM_ERROR("to many connectors\n");
		return -EINVAL;
	}

	if (set->num_connectors == 1 &&
	    set->connectors[0] != &ldu->base.connector) {
		DRM_ERROR("connector doesn't match %p %p\n",
			set->connectors[0], &ldu->base.connector);
		return -EINVAL;
	}

	/* ldu only supports one fb active at the time */
	if (dev_priv->ldu_priv->fb && vfb &&
	    !(dev_priv->ldu_priv->num_active == 1 &&
	      !list_empty(&ldu->active)) &&
	    dev_priv->ldu_priv->fb != vfb) {
		DRM_ERROR("Multiple framebuffers not supported\n");
		return -EINVAL;
	}

	/* since they always map one to one these are safe */
	connector = &ldu->base.connector;
	encoder = &ldu->base.encoder;

	/* should we turn the crtc off? */
	if (set->num_connectors == 0 || !set->mode || !set->fb) {

		connector->encoder = NULL;
		encoder->crtc = NULL;
		crtc->primary->fb = NULL;
		crtc->enabled = false;

		vmw_ldu_del_active(dev_priv, ldu);

		return vmw_ldu_commit_list(dev_priv);
	}


	/* we now know we want to set a mode */
	mode = set->mode;
	fb = set->fb;

	if (set->x + mode->hdisplay > fb->width ||
	    set->y + mode->vdisplay > fb->height) {
		DRM_ERROR("set outside of framebuffer\n");
		return -EINVAL;
	}

	vmw_svga_enable(dev_priv);

	crtc->primary->fb = fb;
	encoder->crtc = crtc;
	connector->encoder = encoder;
	crtc->x = set->x;
	crtc->y = set->y;
	crtc->mode = *mode;
	crtc->enabled = true;
	ldu->base.set_gui_x = set->x;
	ldu->base.set_gui_y = set->y;

	vmw_ldu_add_active(dev_priv, ldu, vfb);

	return vmw_ldu_commit_list(dev_priv);
}

static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	.gamma_set = vmw_du_crtc_gamma_set,
	.destroy = vmw_ldu_crtc_destroy,
	.reset = vmw_du_crtc_reset,
	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
	.atomic_destroy_state = vmw_du_crtc_destroy_state,
	.set_config = vmw_ldu_crtc_set_config,
};


/*
 * Legacy Display Unit encoder functions
 */

static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
{
	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
}

static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
	.destroy = vmw_ldu_encoder_destroy,
};

/*
 * Legacy Display Unit connector functions
 */

static void vmw_ldu_connector_destroy(struct drm_connector *connector)
{
	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
}

static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
	.dpms = vmw_du_connector_dpms,
	.detect = vmw_du_connector_detect,
	.fill_modes = vmw_du_connector_fill_modes,
	.set_property = vmw_du_connector_set_property,
	.destroy = vmw_ldu_connector_destroy,
	.reset = vmw_du_connector_reset,
	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
	.atomic_set_property = vmw_du_connector_atomic_set_property,
	.atomic_get_property = vmw_du_connector_atomic_get_property,
};

/*
 * Legacy Display Plane Functions
 */

static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
	.update_plane = drm_primary_helper_update,
	.disable_plane = drm_primary_helper_disable,
	.destroy = vmw_du_primary_plane_destroy,
	.reset = vmw_du_plane_reset,
	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	.atomic_destroy_state = vmw_du_plane_destroy_state,
};

static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
	.update_plane = vmw_du_cursor_plane_update,
	.disable_plane = vmw_du_cursor_plane_disable,
	.destroy = vmw_du_cursor_plane_destroy,
	.reset = vmw_du_plane_reset,
	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	.atomic_destroy_state = vmw_du_plane_destroy_state,
};

/*
 * Atomic Helpers
 */
static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
	.prepare = vmw_ldu_crtc_helper_prepare,
	.commit = vmw_ldu_crtc_helper_commit,
	.disable = vmw_ldu_crtc_helper_disable,
	.mode_set = drm_helper_crtc_mode_set,
	.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
	.atomic_check = vmw_du_crtc_atomic_check,
	.atomic_begin = vmw_du_crtc_atomic_begin,
	.atomic_flush = vmw_du_crtc_atomic_flush,
};


static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
{
	struct vmw_legacy_display_unit *ldu;
	struct drm_device *dev = dev_priv->dev;
	struct drm_connector *connector;
	struct drm_encoder *encoder;
	struct drm_plane *primary, *cursor;
	struct drm_crtc *crtc;
	int ret;

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

	ldu->base.unit = unit;
	crtc = &ldu->base.crtc;
	encoder = &ldu->base.encoder;
	connector = &ldu->base.connector;
	primary = &ldu->base.primary;
	cursor = &ldu->base.cursor;

	INIT_LIST_HEAD(&ldu->active);

	ldu->base.pref_active = (unit == 0);
	ldu->base.pref_width = dev_priv->initial_width;
	ldu->base.pref_height = dev_priv->initial_height;
	ldu->base.pref_mode = NULL;

	/*
	 * Remove this after enabling atomic because property values can
	 * only exist in a state object
	 */
	ldu->base.is_implicit = true;

	/* Initialize primary plane */
	vmw_du_plane_reset(primary);

	ret = drm_universal_plane_init(dev, &ldu->base.primary,
				       0, &vmw_ldu_plane_funcs,
				       vmw_primary_plane_formats,
				       ARRAY_SIZE(vmw_primary_plane_formats),
				       DRM_PLANE_TYPE_PRIMARY, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize primary plane");
		goto err_free;
	}

	/* Initialize cursor plane */
	vmw_du_plane_reset(cursor);

	ret = drm_universal_plane_init(dev, &ldu->base.cursor,
			0, &vmw_ldu_cursor_funcs,
			vmw_cursor_plane_formats,
			ARRAY_SIZE(vmw_cursor_plane_formats),
			DRM_PLANE_TYPE_CURSOR, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize cursor plane");
		drm_plane_cleanup(&ldu->base.primary);
		goto err_free;
	}

	ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
				 DRM_MODE_CONNECTOR_VIRTUAL);
	if (ret) {
		DRM_ERROR("Failed to initialize connector\n");
		goto err_free;
	}
	connector->status = vmw_du_connector_detect(connector, true);
	vmw_connector_state_to_vcs(connector->state)->is_implicit = true;


	ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
			       DRM_MODE_ENCODER_VIRTUAL, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize encoder\n");
		goto err_free_connector;
	}

	(void) drm_mode_connector_attach_encoder(connector, encoder);
	encoder->possible_crtcs = (1 << unit);
	encoder->possible_clones = 0;

	ret = drm_connector_register(connector);
	if (ret) {
		DRM_ERROR("Failed to register connector\n");
		goto err_free_encoder;
	}


	vmw_du_crtc_reset(crtc);
	ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
					&ldu->base.cursor,
					&vmw_legacy_crtc_funcs, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize CRTC\n");
		goto err_free_unregister;
	}

	drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);

	drm_mode_crtc_set_gamma_size(crtc, 256);

	drm_object_attach_property(&connector->base,
				   dev_priv->hotplug_mode_update_property, 1);
	drm_object_attach_property(&connector->base,
				   dev->mode_config.suggested_x_property, 0);
	drm_object_attach_property(&connector->base,
				   dev->mode_config.suggested_y_property, 0);
	if (dev_priv->implicit_placement_property)
		drm_object_attach_property
			(&connector->base,
			 dev_priv->implicit_placement_property,
			 1);

	return 0;

err_free_unregister:
	drm_connector_unregister(connector);
err_free_encoder:
	drm_encoder_cleanup(encoder);
err_free_connector:
	drm_connector_cleanup(connector);
err_free:
	kfree(ldu);
	return ret;
}

int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
{
	struct drm_device *dev = dev_priv->dev;
	int i, ret;

	if (dev_priv->ldu_priv) {
		DRM_INFO("ldu system already on\n");
		return -EINVAL;
	}

	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
	if (!dev_priv->ldu_priv)
		return -ENOMEM;

	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	dev_priv->ldu_priv->num_active = 0;
	dev_priv->ldu_priv->last_num_active = 0;
	dev_priv->ldu_priv->fb = NULL;

	/* for old hardware without multimon only enable one display */
	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
		ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
	else
		ret = drm_vblank_init(dev, 1);
	if (ret != 0)
		goto err_free;

	vmw_kms_create_implicit_placement_property(dev_priv, true);

	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
		for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
			vmw_ldu_init(dev_priv, i);
	else
		vmw_ldu_init(dev_priv, 0);

	dev_priv->active_display_unit = vmw_du_legacy;

	DRM_INFO("Legacy Display Unit initialized\n");

	return 0;

err_free:
	kfree(dev_priv->ldu_priv);
	dev_priv->ldu_priv = NULL;
	return ret;
}

int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
{
	struct drm_device *dev = dev_priv->dev;

	if (!dev_priv->ldu_priv)
		return -ENOSYS;

	drm_vblank_cleanup(dev);

	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));

	kfree(dev_priv->ldu_priv);

	return 0;
}


int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv,
				struct vmw_framebuffer *framebuffer,
				unsigned flags, unsigned color,
				struct drm_clip_rect *clips,
				unsigned num_clips, int increment)
{
	size_t fifo_size;
	int i;

	struct {
		uint32_t header;
		SVGAFifoCmdUpdate body;
	} *cmd;

	fifo_size = sizeof(*cmd) * num_clips;
	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Fifo reserve failed.\n");
		return -ENOMEM;
	}

	memset(cmd, 0, fifo_size);
	for (i = 0; i < num_clips; i++, clips += increment) {
		cmd[i].header = SVGA_CMD_UPDATE;
		cmd[i].body.x = clips->x1;
		cmd[i].body.y = clips->y1;
		cmd[i].body.width = clips->x2 - clips->x1;
		cmd[i].body.height = clips->y2 - clips->y1;
	}

	vmw_fifo_commit(dev_priv, fifo_size);
	return 0;
}
Commit	Line	Data
fb1d9738 JB	1	/**************************************************************************
fb1d9738 JB	2	*
54fbde8a	3	* Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
fb1d9738 JB	4	* All Rights Reserved.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a
	7	* copy of this software and associated documentation files (the
	8	* "Software"), to deal in the Software without restriction, including
	9	* without limitation the rights to use, copy, modify, merge, publish,
	10	* distribute, sub license, and/or sell copies of the Software, and to
	11	* permit persons to whom the Software is furnished to do so, subject to
	12	* the following conditions:
	13	*
	14	* The above copyright notice and this permission notice (including the
	15	* next paragraph) shall be included in all copies or substantial portions
	16	* of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	21	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	22	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	23	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	24	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	25	*
	26	**************************************************************************/
	27
	28	#include "vmwgfx_kms.h"
3cb9ae4f	29	#include <drm/drm_plane_helper.h>
d7721ca7 SY	30	#include <drm/drm_atomic.h>
d7721ca7 SY	31	#include <drm/drm_atomic_helper.h>
fb1d9738	32
7a1c2f6c	33
fb1d9738 JB	34	#define vmw_crtc_to_ldu(x) \
	35	container_of(x, struct vmw_legacy_display_unit, base.crtc)
	36	#define vmw_encoder_to_ldu(x) \
	37	container_of(x, struct vmw_legacy_display_unit, base.encoder)
	38	#define vmw_connector_to_ldu(x) \
	39	container_of(x, struct vmw_legacy_display_unit, base.connector)
	40
	41	struct vmw_legacy_display {
	42	struct list_head active;
	43
	44	unsigned num_active;
d7e1958d	45	unsigned last_num_active;
fb1d9738 JB	46
	47	struct vmw_framebuffer *fb;
	48	};
	49
	50	/**
	51	* Display unit using the legacy register interface.
	52	*/
	53	struct vmw_legacy_display_unit {
	54	struct vmw_display_unit base;
	55
	56	struct list_head active;
fb1d9738 JB	57	};
	58
	59	static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
	60	{
	61	list_del_init(&ldu->active);
c8261a96	62	vmw_du_cleanup(&ldu->base);
fb1d9738 JB	63	kfree(ldu);
	64	}
	65
	66
	67	/*
	68	* Legacy Display Unit CRTC functions
	69	*/
	70
fb1d9738 JB	71	static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
	72	{
	73	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
	74	}
	75
	76	static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
	77	{
	78	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	79	struct vmw_legacy_display_unit *entry;
d7e1958d JB	80	struct drm_framebuffer *fb = NULL;
d7e1958d JB	81	struct drm_crtc *crtc = NULL;
36cc79bc	82	int i = 0;
fb1d9738	83
d7e1958d JB	84	/* If there is no display topology the host just assumes
	85	* that the guest will set the same layout as the host.
	86	*/
	87	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
	88	int w = 0, h = 0;
	89	list_for_each_entry(entry, &lds->active, active) {
	90	crtc = &entry->base.crtc;
	91	w = max(w, crtc->x + crtc->mode.hdisplay);
	92	h = max(h, crtc->y + crtc->mode.vdisplay);
	93	i++;
	94	}
	95
	96	if (crtc == NULL)
	97	return 0;
f4510a27	98	fb = entry->base.crtc.primary->fb;
d7e1958d	99
01f2c773	100	return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
272725c7	101	fb->format->cpp[0] * 8,
b00c600e	102	fb->format->depth);
d7e1958d JB	103	}
d7e1958d JB	104
d7e1958d JB	105	if (!list_empty(&lds->active)) {
d7e1958d JB	106	entry = list_entry(lds->active.next, typeof(*entry), active);
f4510a27	107	fb = entry->base.crtc.primary->fb;
d7e1958d	108
01f2c773	109	vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
272725c7	110	fb->format->cpp[0] * 8, fb->format->depth);
d7e1958d JB	111	}
d7e1958d JB	112
259600d5 JB	113	/* Make sure we always show something. */
	114	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
	115	lds->num_active ? lds->num_active : 1);
	116
fb1d9738 JB	117	i = 0;
	118	list_for_each_entry(entry, &lds->active, active) {
	119	crtc = &entry->base.crtc;
	120
	121	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
	122	vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
	123	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
	124	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
	125	vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
	126	vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
	127	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	128
	129	i++;
	130	}
	131
d7e1958d JB	132	BUG_ON(i != lds->num_active);
	133
	134	lds->last_num_active = lds->num_active;
	135
fb1d9738 JB	136	return 0;
	137	}
	138
	139	static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
	140	struct vmw_legacy_display_unit *ldu)
	141	{
	142	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	143	if (list_empty(&ldu->active))
	144	return 0;
	145
6a591a96	146	/* Must init otherwise list_empty(&ldu->active) will not work. */
fb1d9738 JB	147	list_del_init(&ldu->active);
	148	if (--(ld->num_active) == 0) {
	149	BUG_ON(!ld->fb);
	150	if (ld->fb->unpin)
	151	ld->fb->unpin(ld->fb);
	152	ld->fb = NULL;
	153	}
	154
	155	return 0;
	156	}
	157
	158	static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
	159	struct vmw_legacy_display_unit *ldu,
	160	struct vmw_framebuffer *vfb)
	161	{
	162	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	163	struct vmw_legacy_display_unit *entry;
	164	struct list_head *at;
	165
04e9e94d JB	166	BUG_ON(!ld->num_active && ld->fb);
	167	if (vfb != ld->fb) {
	168	if (ld->fb && ld->fb->unpin)
	169	ld->fb->unpin(ld->fb);
06ec4190	170	vmw_svga_enable(vmw_priv);
04e9e94d JB	171	if (vfb->pin)
	172	vfb->pin(vfb);
	173	ld->fb = vfb;
	174	}
	175
fb1d9738 JB	176	if (!list_empty(&ldu->active))
	177	return 0;
	178
	179	at = &ld->active;
	180	list_for_each_entry(entry, &ld->active, active) {
bbfad336	181	if (entry->base.unit > ldu->base.unit)
fb1d9738 JB	182	break;
	183
	184	at = &entry->active;
	185	}
	186
	187	list_add(&ldu->active, at);
04e9e94d JB	188
04e9e94d JB	189	ld->num_active++;
fb1d9738 JB	190
	191	return 0;
	192	}
	193
06ec4190 SY	194	/**
	195	* vmw_ldu_crtc_mode_set_nofb - Enable svga
	196	*
	197	* @crtc: CRTC associated with the new screen
	198	*
	199	* For LDU, just enable the svga
	200	*/
	201	static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
	202	{
	203	}
	204
	205	/**
	206	* vmw_ldu_crtc_helper_prepare - Noop
	207	*
	208	* @crtc: CRTC associated with the new screen
	209	*
	210	* Prepares the CRTC for a mode set, but we don't need to do anything here.
	211	*
	212	*/
	213	static void vmw_ldu_crtc_helper_prepare(struct drm_crtc *crtc)
	214	{
	215	}
	216
	217	/**
	218	* vmw_ldu_crtc_helper_commit - Noop
	219	*
	220	* @crtc: CRTC associated with the new screen
	221	*
	222	* This is called after a mode set has been completed. Here's
	223	* usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
	224	* but since for LDU the display plane is closely tied to the
	225	* CRTC, it makes more sense to do those at plane update time.
	226	*/
	227	static void vmw_ldu_crtc_helper_commit(struct drm_crtc *crtc)
	228	{
	229	struct vmw_private *dev_priv;
	230	struct vmw_legacy_display_unit *ldu;
	231	struct vmw_framebuffer *vfb;
	232	struct drm_framebuffer *fb;
	233
	234
	235	ldu = vmw_crtc_to_ldu(crtc);
	236	dev_priv = vmw_priv(crtc->dev);
	237	fb = crtc->primary->fb;
	238
	239	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
	240
	241	if (vfb)
	242	vmw_ldu_add_active(dev_priv, ldu, vfb);
	243	else
	244	vmw_ldu_del_active(dev_priv, ldu);
	245	}
	246
	247	/**
	248	* vmw_ldu_crtc_helper_disable - Turns off CRTC
	249	*
	250	* @crtc: CRTC to be turned off
	251	*/
	252	static void vmw_ldu_crtc_helper_disable(struct drm_crtc *crtc)
	253	{
	254	}
	255
fb1d9738 JB	256	static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
	257	{
	258	struct vmw_private *dev_priv;
	259	struct vmw_legacy_display_unit *ldu;
	260	struct drm_connector *connector;
	261	struct drm_display_mode *mode;
	262	struct drm_encoder *encoder;
	263	struct vmw_framebuffer *vfb;
	264	struct drm_framebuffer *fb;
	265	struct drm_crtc *crtc;
	266
	267	if (!set)
	268	return -EINVAL;
	269
	270	if (!set->crtc)
	271	return -EINVAL;
	272
	273	/* get the ldu */
	274	crtc = set->crtc;
	275	ldu = vmw_crtc_to_ldu(crtc);
	276	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	277	dev_priv = vmw_priv(crtc->dev);
	278
	279	if (set->num_connectors > 1) {
	280	DRM_ERROR("to many connectors\n");
	281	return -EINVAL;
	282	}
	283
	284	if (set->num_connectors == 1 &&
	285	set->connectors[0] != &ldu->base.connector) {
	286	DRM_ERROR("connector doesn't match %p %p\n",
	287	set->connectors[0], &ldu->base.connector);
	288	return -EINVAL;
	289	}
	290
	291	/* ldu only supports one fb active at the time */
	292	if (dev_priv->ldu_priv->fb && vfb &&
6a591a96 JB	293	!(dev_priv->ldu_priv->num_active == 1 &&
6a591a96 JB	294	!list_empty(&ldu->active)) &&
fb1d9738 JB	295	dev_priv->ldu_priv->fb != vfb) {
	296	DRM_ERROR("Multiple framebuffers not supported\n");
	297	return -EINVAL;
	298	}
	299
	300	/* since they always map one to one these are safe */
	301	connector = &ldu->base.connector;
	302	encoder = &ldu->base.encoder;
	303
	304	/* should we turn the crtc off? */
	305	if (set->num_connectors == 0 \|\| !set->mode \|\| !set->fb) {
	306
	307	connector->encoder = NULL;
	308	encoder->crtc = NULL;
f4510a27	309	crtc->primary->fb = NULL;
c6c1f325	310	crtc->enabled = false;
fb1d9738 JB	311
	312	vmw_ldu_del_active(dev_priv, ldu);
	313
0bef23f9	314	return vmw_ldu_commit_list(dev_priv);
fb1d9738 JB	315	}
	316
	317
	318	/* we now know we want to set a mode */
	319	mode = set->mode;
	320	fb = set->fb;
	321
	322	if (set->x + mode->hdisplay > fb->width \|\|
	323	set->y + mode->vdisplay > fb->height) {
	324	DRM_ERROR("set outside of framebuffer\n");
	325	return -EINVAL;
	326	}
	327
153b3d5b	328	vmw_svga_enable(dev_priv);
fb1d9738	329
f4510a27	330	crtc->primary->fb = fb;
fb1d9738 JB	331	encoder->crtc = crtc;
	332	connector->encoder = encoder;
	333	crtc->x = set->x;
	334	crtc->y = set->y;
	335	crtc->mode = *mode;
c6c1f325	336	crtc->enabled = true;
6dd687b4 TH	337	ldu->base.set_gui_x = set->x;
6dd687b4 TH	338	ldu->base.set_gui_y = set->y;
fb1d9738 JB	339
	340	vmw_ldu_add_active(dev_priv, ldu, vfb);
	341
0bef23f9	342	return vmw_ldu_commit_list(dev_priv);
fb1d9738 JB	343	}
fb1d9738 JB	344
d7955fcf	345	static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
626ab771	346	.gamma_set = vmw_du_crtc_gamma_set,
fb1d9738	347	.destroy = vmw_ldu_crtc_destroy,
9c2542a4 SY	348	.reset = vmw_du_crtc_reset,
	349	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
	350	.atomic_destroy_state = vmw_du_crtc_destroy_state,
fb1d9738 JB	351	.set_config = vmw_ldu_crtc_set_config,
	352	};
	353
626ab771	354
fb1d9738 JB	355	/*
	356	* Legacy Display Unit encoder functions
	357	*/
	358
	359	static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
	360	{
	361	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
	362	}
	363
d7955fcf	364	static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
fb1d9738 JB	365	.destroy = vmw_ldu_encoder_destroy,
	366	};
	367
	368	/*
	369	* Legacy Display Unit connector functions
	370	*/
	371
fb1d9738 JB	372	static void vmw_ldu_connector_destroy(struct drm_connector *connector)
	373	{
	374	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
	375	}
	376
d7955fcf	377	static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
626ab771	378	.dpms = vmw_du_connector_dpms,
626ab771 JB	379	.detect = vmw_du_connector_detect,
	380	.fill_modes = vmw_du_connector_fill_modes,
	381	.set_property = vmw_du_connector_set_property,
fb1d9738	382	.destroy = vmw_ldu_connector_destroy,
d7721ca7 SY	383	.reset = vmw_du_connector_reset,
	384	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	385	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
	386	.atomic_set_property = vmw_du_connector_atomic_set_property,
	387	.atomic_get_property = vmw_du_connector_atomic_get_property,
fb1d9738 JB	388	};
fb1d9738 JB	389
36cc79bc SY	390	/*
	391	* Legacy Display Plane Functions
	392	*/
	393
	394	static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
	395	.update_plane = drm_primary_helper_update,
	396	.disable_plane = drm_primary_helper_disable,
	397	.destroy = vmw_du_primary_plane_destroy,
cc5ec459 SY	398	.reset = vmw_du_plane_reset,
	399	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	400	.atomic_destroy_state = vmw_du_plane_destroy_state,
36cc79bc SY	401	};
	402
	403	static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
	404	.update_plane = vmw_du_cursor_plane_update,
	405	.disable_plane = vmw_du_cursor_plane_disable,
	406	.destroy = vmw_du_cursor_plane_destroy,
cc5ec459 SY	407	.reset = vmw_du_plane_reset,
	408	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	409	.atomic_destroy_state = vmw_du_plane_destroy_state,
36cc79bc SY	410	};
36cc79bc SY	411
06ec4190 SY	412	/*
	413	* Atomic Helpers
	414	*/
	415	static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
	416	.prepare = vmw_ldu_crtc_helper_prepare,
	417	.commit = vmw_ldu_crtc_helper_commit,
	418	.disable = vmw_ldu_crtc_helper_disable,
	419	.mode_set = drm_helper_crtc_mode_set,
	420	.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
	421	.atomic_check = vmw_du_crtc_atomic_check,
	422	.atomic_begin = vmw_du_crtc_atomic_begin,
	423	.atomic_flush = vmw_du_crtc_atomic_flush,
	424	};
	425
36cc79bc	426
fb1d9738 JB	427	static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
	428	{
	429	struct vmw_legacy_display_unit *ldu;
	430	struct drm_device *dev = dev_priv->dev;
	431	struct drm_connector *connector;
	432	struct drm_encoder *encoder;
cc5ec459	433	struct drm_plane primary, cursor;
fb1d9738	434	struct drm_crtc *crtc;
36cc79bc	435	int ret;
fb1d9738 JB	436
	437	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	438	if (!ldu)
	439	return -ENOMEM;
	440
bbfad336	441	ldu->base.unit = unit;
fb1d9738 JB	442	crtc = &ldu->base.crtc;
	443	encoder = &ldu->base.encoder;
	444	connector = &ldu->base.connector;
cc5ec459 SY	445	primary = &ldu->base.primary;
cc5ec459 SY	446	cursor = &ldu->base.cursor;
fb1d9738	447
1ae1ddd5 JB	448	INIT_LIST_HEAD(&ldu->active);
1ae1ddd5 JB	449
626ab771	450	ldu->base.pref_active = (unit == 0);
eb4f923b JB	451	ldu->base.pref_width = dev_priv->initial_width;
eb4f923b JB	452	ldu->base.pref_height = dev_priv->initial_height;
626ab771	453	ldu->base.pref_mode = NULL;
9c2542a4 SY	454
	455	/*
	456	* Remove this after enabling atomic because property values can
	457	* only exist in a state object
	458	*/
6987427a	459	ldu->base.is_implicit = true;
d8bd19d2	460
36cc79bc	461	/* Initialize primary plane */
cc5ec459 SY	462	vmw_du_plane_reset(primary);
cc5ec459 SY	463
36cc79bc SY	464	ret = drm_universal_plane_init(dev, &ldu->base.primary,
	465	0, &vmw_ldu_plane_funcs,
	466	vmw_primary_plane_formats,
	467	ARRAY_SIZE(vmw_primary_plane_formats),
	468	DRM_PLANE_TYPE_PRIMARY, NULL);
	469	if (ret) {
	470	DRM_ERROR("Failed to initialize primary plane");
	471	goto err_free;
	472	}
	473
	474	/* Initialize cursor plane */
cc5ec459 SY	475	vmw_du_plane_reset(cursor);
cc5ec459 SY	476
36cc79bc SY	477	ret = drm_universal_plane_init(dev, &ldu->base.cursor,
	478	0, &vmw_ldu_cursor_funcs,
	479	vmw_cursor_plane_formats,
	480	ARRAY_SIZE(vmw_cursor_plane_formats),
	481	DRM_PLANE_TYPE_CURSOR, NULL);
	482	if (ret) {
	483	DRM_ERROR("Failed to initialize cursor plane");
	484	drm_plane_cleanup(&ldu->base.primary);
	485	goto err_free;
	486	}
	487
	488	ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
	489	DRM_MODE_CONNECTOR_VIRTUAL);
	490	if (ret) {
	491	DRM_ERROR("Failed to initialize connector\n");
	492	goto err_free;
	493	}
626ab771	494	connector->status = vmw_du_connector_detect(connector, true);
d7721ca7 SY	495	vmw_connector_state_to_vcs(connector->state)->is_implicit = true;
d7721ca7 SY	496
fb1d9738	497
36cc79bc SY	498	ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
	499	DRM_MODE_ENCODER_VIRTUAL, NULL);
	500	if (ret) {
	501	DRM_ERROR("Failed to initialize encoder\n");
	502	goto err_free_connector;
	503	}
	504
	505	(void) drm_mode_connector_attach_encoder(connector, encoder);
fb1d9738 JB	506	encoder->possible_crtcs = (1 << unit);
	507	encoder->possible_clones = 0;
	508
36cc79bc SY	509	ret = drm_connector_register(connector);
	510	if (ret) {
	511	DRM_ERROR("Failed to register connector\n");
	512	goto err_free_encoder;
	513	}
6a0a7a9e	514
d7721ca7 SY	515
d7721ca7 SY	516	vmw_du_crtc_reset(crtc);
36cc79bc SY	517	ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
	518	&ldu->base.cursor,
	519	&vmw_legacy_crtc_funcs, NULL);
	520	if (ret) {
	521	DRM_ERROR("Failed to initialize CRTC\n");
	522	goto err_free_unregister;
	523	}
fb1d9738	524
06ec4190 SY	525	drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
06ec4190 SY	526
f01b7ba0 MD	527	drm_mode_crtc_set_gamma_size(crtc, 256);
f01b7ba0 MD	528
578e609a TH	529	drm_object_attach_property(&connector->base,
	530	dev_priv->hotplug_mode_update_property, 1);
	531	drm_object_attach_property(&connector->base,
	532	dev->mode_config.suggested_x_property, 0);
	533	drm_object_attach_property(&connector->base,
	534	dev->mode_config.suggested_y_property, 0);
76404ac0 TH	535	if (dev_priv->implicit_placement_property)
	536	drm_object_attach_property
	537	(&connector->base,
	538	dev_priv->implicit_placement_property,
	539	1);
fb1d9738 JB	540
fb1d9738 JB	541	return 0;
36cc79bc SY	542
	543	err_free_unregister:
	544	drm_connector_unregister(connector);
	545	err_free_encoder:
	546	drm_encoder_cleanup(encoder);
	547	err_free_connector:
	548	drm_connector_cleanup(connector);
	549	err_free:
	550	kfree(ldu);
	551	return ret;
fb1d9738 JB	552	}
fb1d9738 JB	553
c8261a96	554	int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
fb1d9738	555	{
7a1c2f6c	556	struct drm_device *dev = dev_priv->dev;
74b5ea30	557	int i, ret;
7a1c2f6c	558
fb1d9738 JB	559	if (dev_priv->ldu_priv) {
	560	DRM_INFO("ldu system already on\n");
	561	return -EINVAL;
	562	}
	563
85b54e0c	564	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
fb1d9738 JB	565	if (!dev_priv->ldu_priv)
	566	return -ENOMEM;
	567
	568	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	569	dev_priv->ldu_priv->num_active = 0;
d7e1958d	570	dev_priv->ldu_priv->last_num_active = 0;
fb1d9738 JB	571	dev_priv->ldu_priv->fb = NULL;
fb1d9738 JB	572
60a16a30 JB	573	/* for old hardware without multimon only enable one display */
	574	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
	575	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
	576	else
	577	ret = drm_vblank_init(dev, 1);
	578	if (ret != 0)
	579	goto err_free;
fb1d9738	580
76404ac0 TH	581	vmw_kms_create_implicit_placement_property(dev_priv, true);
76404ac0 TH	582
60a16a30	583	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
56d1c78d	584	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
7a1c2f6c	585	vmw_ldu_init(dev_priv, i);
60a16a30	586	else
7a1c2f6c	587	vmw_ldu_init(dev_priv, 0);
fb1d9738	588
c8261a96 SY	589	dev_priv->active_display_unit = vmw_du_legacy;
	590
	591	DRM_INFO("Legacy Display Unit initialized\n");
	592
60a16a30 JB	593	return 0;
60a16a30 JB	594
60a16a30 JB	595	err_free:
	596	kfree(dev_priv->ldu_priv);
	597	dev_priv->ldu_priv = NULL;
7a1c2f6c	598	return ret;
fb1d9738 JB	599	}
fb1d9738 JB	600
c8261a96	601	int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
fb1d9738	602	{
7a1c2f6c TH	603	struct drm_device *dev = dev_priv->dev;
7a1c2f6c TH	604
fb1d9738 JB	605	if (!dev_priv->ldu_priv)
	606	return -ENOSYS;
	607
60a16a30 JB	608	drm_vblank_cleanup(dev);
60a16a30 JB	609
fb1d9738 JB	610	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
	611
	612	kfree(dev_priv->ldu_priv);
	613
	614	return 0;
	615	}
c8261a96 SY	616
	617
	618	int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv,
	619	struct vmw_framebuffer *framebuffer,
	620	unsigned flags, unsigned color,
	621	struct drm_clip_rect *clips,
	622	unsigned num_clips, int increment)
	623	{
	624	size_t fifo_size;
	625	int i;
	626
	627	struct {
	628	uint32_t header;
	629	SVGAFifoCmdUpdate body;
	630	} *cmd;
	631
	632	fifo_size = sizeof(cmd) num_clips;
	633	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	634	if (unlikely(cmd == NULL)) {
	635	DRM_ERROR("Fifo reserve failed.\n");
	636	return -ENOMEM;
	637	}
	638
	639	memset(cmd, 0, fifo_size);
	640	for (i = 0; i < num_clips; i++, clips += increment) {
b9eb1a61 TH	641	cmd[i].header = SVGA_CMD_UPDATE;
	642	cmd[i].body.x = clips->x1;
	643	cmd[i].body.y = clips->y1;
	644	cmd[i].body.width = clips->x2 - clips->x1;
	645	cmd[i].body.height = clips->y2 - clips->y1;
c8261a96 SY	646	}
	647
	648	vmw_fifo_commit(dev_priv, fifo_size);
	649	return 0;
	650	}