[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>


#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);
		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;
}

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,
};

/*
 * 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,
};

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,
};


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_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;

	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 */
	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 */
	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);

	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;
	}

	/* FIXME: Turn on after plane/connector states are implemented. */
	/* 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_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>
fb1d9738	30
7a1c2f6c	31
fb1d9738 JB	32	#define vmw_crtc_to_ldu(x) \
	33	container_of(x, struct vmw_legacy_display_unit, base.crtc)
	34	#define vmw_encoder_to_ldu(x) \
	35	container_of(x, struct vmw_legacy_display_unit, base.encoder)
	36	#define vmw_connector_to_ldu(x) \
	37	container_of(x, struct vmw_legacy_display_unit, base.connector)
	38
	39	struct vmw_legacy_display {
	40	struct list_head active;
	41
	42	unsigned num_active;
d7e1958d	43	unsigned last_num_active;
fb1d9738 JB	44
	45	struct vmw_framebuffer *fb;
	46	};
	47
	48	/**
	49	* Display unit using the legacy register interface.
	50	*/
	51	struct vmw_legacy_display_unit {
	52	struct vmw_display_unit base;
	53
	54	struct list_head active;
fb1d9738 JB	55	};
	56
	57	static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
	58	{
	59	list_del_init(&ldu->active);
c8261a96	60	vmw_du_cleanup(&ldu->base);
fb1d9738 JB	61	kfree(ldu);
	62	}
	63
	64
	65	/*
	66	* Legacy Display Unit CRTC functions
	67	*/
	68
fb1d9738 JB	69	static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
	70	{
	71	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
	72	}
	73
	74	static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
	75	{
	76	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	77	struct vmw_legacy_display_unit *entry;
d7e1958d JB	78	struct drm_framebuffer *fb = NULL;
d7e1958d JB	79	struct drm_crtc *crtc = NULL;
36cc79bc	80	int i = 0;
fb1d9738	81
d7e1958d JB	82	/* If there is no display topology the host just assumes
	83	* that the guest will set the same layout as the host.
	84	*/
	85	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
	86	int w = 0, h = 0;
	87	list_for_each_entry(entry, &lds->active, active) {
	88	crtc = &entry->base.crtc;
	89	w = max(w, crtc->x + crtc->mode.hdisplay);
	90	h = max(h, crtc->y + crtc->mode.vdisplay);
	91	i++;
	92	}
	93
	94	if (crtc == NULL)
	95	return 0;
f4510a27	96	fb = entry->base.crtc.primary->fb;
d7e1958d	97
01f2c773	98	return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
272725c7	99	fb->format->cpp[0] * 8,
b00c600e	100	fb->format->depth);
d7e1958d JB	101	}
d7e1958d JB	102
d7e1958d JB	103	if (!list_empty(&lds->active)) {
d7e1958d JB	104	entry = list_entry(lds->active.next, typeof(*entry), active);
f4510a27	105	fb = entry->base.crtc.primary->fb;
d7e1958d	106
01f2c773	107	vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
272725c7	108	fb->format->cpp[0] * 8, fb->format->depth);
d7e1958d JB	109	}
d7e1958d JB	110
259600d5 JB	111	/* Make sure we always show something. */
	112	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
	113	lds->num_active ? lds->num_active : 1);
	114
fb1d9738 JB	115	i = 0;
	116	list_for_each_entry(entry, &lds->active, active) {
	117	crtc = &entry->base.crtc;
	118
	119	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
	120	vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
	121	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
	122	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
	123	vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
	124	vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
	125	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	126
	127	i++;
	128	}
	129
d7e1958d JB	130	BUG_ON(i != lds->num_active);
	131
	132	lds->last_num_active = lds->num_active;
	133
fb1d9738 JB	134	return 0;
	135	}
	136
	137	static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
	138	struct vmw_legacy_display_unit *ldu)
	139	{
	140	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	141	if (list_empty(&ldu->active))
	142	return 0;
	143
6a591a96	144	/* Must init otherwise list_empty(&ldu->active) will not work. */
fb1d9738 JB	145	list_del_init(&ldu->active);
	146	if (--(ld->num_active) == 0) {
	147	BUG_ON(!ld->fb);
	148	if (ld->fb->unpin)
	149	ld->fb->unpin(ld->fb);
	150	ld->fb = NULL;
	151	}
	152
	153	return 0;
	154	}
	155
	156	static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
	157	struct vmw_legacy_display_unit *ldu,
	158	struct vmw_framebuffer *vfb)
	159	{
	160	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	161	struct vmw_legacy_display_unit *entry;
	162	struct list_head *at;
	163
04e9e94d JB	164	BUG_ON(!ld->num_active && ld->fb);
	165	if (vfb != ld->fb) {
	166	if (ld->fb && ld->fb->unpin)
	167	ld->fb->unpin(ld->fb);
	168	if (vfb->pin)
	169	vfb->pin(vfb);
	170	ld->fb = vfb;
	171	}
	172
fb1d9738 JB	173	if (!list_empty(&ldu->active))
	174	return 0;
	175
	176	at = &ld->active;
	177	list_for_each_entry(entry, &ld->active, active) {
bbfad336	178	if (entry->base.unit > ldu->base.unit)
fb1d9738 JB	179	break;
	180
	181	at = &entry->active;
	182	}
	183
	184	list_add(&ldu->active, at);
04e9e94d JB	185
04e9e94d JB	186	ld->num_active++;
fb1d9738 JB	187
	188	return 0;
	189	}
	190
	191	static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
	192	{
	193	struct vmw_private *dev_priv;
	194	struct vmw_legacy_display_unit *ldu;
	195	struct drm_connector *connector;
	196	struct drm_display_mode *mode;
	197	struct drm_encoder *encoder;
	198	struct vmw_framebuffer *vfb;
	199	struct drm_framebuffer *fb;
	200	struct drm_crtc *crtc;
	201
	202	if (!set)
	203	return -EINVAL;
	204
	205	if (!set->crtc)
	206	return -EINVAL;
	207
	208	/* get the ldu */
	209	crtc = set->crtc;
	210	ldu = vmw_crtc_to_ldu(crtc);
	211	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	212	dev_priv = vmw_priv(crtc->dev);
	213
	214	if (set->num_connectors > 1) {
	215	DRM_ERROR("to many connectors\n");
	216	return -EINVAL;
	217	}
	218
	219	if (set->num_connectors == 1 &&
	220	set->connectors[0] != &ldu->base.connector) {
	221	DRM_ERROR("connector doesn't match %p %p\n",
	222	set->connectors[0], &ldu->base.connector);
	223	return -EINVAL;
	224	}
	225
	226	/* ldu only supports one fb active at the time */
	227	if (dev_priv->ldu_priv->fb && vfb &&
6a591a96 JB	228	!(dev_priv->ldu_priv->num_active == 1 &&
6a591a96 JB	229	!list_empty(&ldu->active)) &&
fb1d9738 JB	230	dev_priv->ldu_priv->fb != vfb) {
	231	DRM_ERROR("Multiple framebuffers not supported\n");
	232	return -EINVAL;
	233	}
	234
	235	/* since they always map one to one these are safe */
	236	connector = &ldu->base.connector;
	237	encoder = &ldu->base.encoder;
	238
	239	/* should we turn the crtc off? */
	240	if (set->num_connectors == 0 \|\| !set->mode \|\| !set->fb) {
	241
	242	connector->encoder = NULL;
	243	encoder->crtc = NULL;
f4510a27	244	crtc->primary->fb = NULL;
c6c1f325	245	crtc->enabled = false;
fb1d9738 JB	246
	247	vmw_ldu_del_active(dev_priv, ldu);
	248
0bef23f9	249	return vmw_ldu_commit_list(dev_priv);
fb1d9738 JB	250	}
	251
	252
	253	/* we now know we want to set a mode */
	254	mode = set->mode;
	255	fb = set->fb;
	256
	257	if (set->x + mode->hdisplay > fb->width \|\|
	258	set->y + mode->vdisplay > fb->height) {
	259	DRM_ERROR("set outside of framebuffer\n");
	260	return -EINVAL;
	261	}
	262
153b3d5b	263	vmw_svga_enable(dev_priv);
fb1d9738	264
f4510a27	265	crtc->primary->fb = fb;
fb1d9738 JB	266	encoder->crtc = crtc;
	267	connector->encoder = encoder;
	268	crtc->x = set->x;
	269	crtc->y = set->y;
	270	crtc->mode = *mode;
c6c1f325	271	crtc->enabled = true;
6dd687b4 TH	272	ldu->base.set_gui_x = set->x;
6dd687b4 TH	273	ldu->base.set_gui_y = set->y;
fb1d9738 JB	274
	275	vmw_ldu_add_active(dev_priv, ldu, vfb);
	276
0bef23f9	277	return vmw_ldu_commit_list(dev_priv);
fb1d9738 JB	278	}
fb1d9738 JB	279
d7955fcf	280	static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
626ab771	281	.gamma_set = vmw_du_crtc_gamma_set,
fb1d9738	282	.destroy = vmw_ldu_crtc_destroy,
9c2542a4 SY	283	.reset = vmw_du_crtc_reset,
	284	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
	285	.atomic_destroy_state = vmw_du_crtc_destroy_state,
fb1d9738 JB	286	.set_config = vmw_ldu_crtc_set_config,
	287	};
	288
626ab771	289
fb1d9738 JB	290	/*
	291	* Legacy Display Unit encoder functions
	292	*/
	293
	294	static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
	295	{
	296	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
	297	}
	298
d7955fcf	299	static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
fb1d9738 JB	300	.destroy = vmw_ldu_encoder_destroy,
	301	};
	302
	303	/*
	304	* Legacy Display Unit connector functions
	305	*/
	306
fb1d9738 JB	307	static void vmw_ldu_connector_destroy(struct drm_connector *connector)
	308	{
	309	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
	310	}
	311
d7955fcf	312	static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
626ab771	313	.dpms = vmw_du_connector_dpms,
626ab771 JB	314	.detect = vmw_du_connector_detect,
	315	.fill_modes = vmw_du_connector_fill_modes,
	316	.set_property = vmw_du_connector_set_property,
fb1d9738 JB	317	.destroy = vmw_ldu_connector_destroy,
	318	};
	319
36cc79bc SY	320	/*
	321	* Legacy Display Plane Functions
	322	*/
	323
	324	static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
	325	.update_plane = drm_primary_helper_update,
	326	.disable_plane = drm_primary_helper_disable,
	327	.destroy = vmw_du_primary_plane_destroy,
	328	};
	329
	330	static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
	331	.update_plane = vmw_du_cursor_plane_update,
	332	.disable_plane = vmw_du_cursor_plane_disable,
	333	.destroy = vmw_du_cursor_plane_destroy,
	334	};
	335
	336
fb1d9738 JB	337	static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
	338	{
	339	struct vmw_legacy_display_unit *ldu;
	340	struct drm_device *dev = dev_priv->dev;
	341	struct drm_connector *connector;
	342	struct drm_encoder *encoder;
	343	struct drm_crtc *crtc;
36cc79bc	344	int ret;
fb1d9738 JB	345
	346	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	347	if (!ldu)
	348	return -ENOMEM;
	349
bbfad336	350	ldu->base.unit = unit;
fb1d9738 JB	351	crtc = &ldu->base.crtc;
	352	encoder = &ldu->base.encoder;
	353	connector = &ldu->base.connector;
	354
1ae1ddd5 JB	355	INIT_LIST_HEAD(&ldu->active);
1ae1ddd5 JB	356
626ab771	357	ldu->base.pref_active = (unit == 0);
eb4f923b JB	358	ldu->base.pref_width = dev_priv->initial_width;
eb4f923b JB	359	ldu->base.pref_height = dev_priv->initial_height;
626ab771	360	ldu->base.pref_mode = NULL;
9c2542a4 SY	361
	362	/*
	363	* Remove this after enabling atomic because property values can
	364	* only exist in a state object
	365	*/
6987427a	366	ldu->base.is_implicit = true;
d8bd19d2	367
36cc79bc SY	368	/* Initialize primary plane */
	369	ret = drm_universal_plane_init(dev, &ldu->base.primary,
	370	0, &vmw_ldu_plane_funcs,
	371	vmw_primary_plane_formats,
	372	ARRAY_SIZE(vmw_primary_plane_formats),
	373	DRM_PLANE_TYPE_PRIMARY, NULL);
	374	if (ret) {
	375	DRM_ERROR("Failed to initialize primary plane");
	376	goto err_free;
	377	}
	378
	379	/* Initialize cursor plane */
	380	ret = drm_universal_plane_init(dev, &ldu->base.cursor,
	381	0, &vmw_ldu_cursor_funcs,
	382	vmw_cursor_plane_formats,
	383	ARRAY_SIZE(vmw_cursor_plane_formats),
	384	DRM_PLANE_TYPE_CURSOR, NULL);
	385	if (ret) {
	386	DRM_ERROR("Failed to initialize cursor plane");
	387	drm_plane_cleanup(&ldu->base.primary);
	388	goto err_free;
	389	}
	390
	391	ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
	392	DRM_MODE_CONNECTOR_VIRTUAL);
	393	if (ret) {
	394	DRM_ERROR("Failed to initialize connector\n");
	395	goto err_free;
	396	}
626ab771	397	connector->status = vmw_du_connector_detect(connector, true);
fb1d9738	398
36cc79bc SY	399	ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
	400	DRM_MODE_ENCODER_VIRTUAL, NULL);
	401	if (ret) {
	402	DRM_ERROR("Failed to initialize encoder\n");
	403	goto err_free_connector;
	404	}
	405
	406	(void) drm_mode_connector_attach_encoder(connector, encoder);
fb1d9738 JB	407	encoder->possible_crtcs = (1 << unit);
	408	encoder->possible_clones = 0;
	409
36cc79bc SY	410	ret = drm_connector_register(connector);
	411	if (ret) {
	412	DRM_ERROR("Failed to register connector\n");
	413	goto err_free_encoder;
	414	}
6a0a7a9e	415
9c2542a4 SY	416	/* FIXME: Turn on after plane/connector states are implemented. */
9c2542a4 SY	417	/* vmw_du_crtc_reset(crtc); */
36cc79bc SY	418	ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
	419	&ldu->base.cursor,
	420	&vmw_legacy_crtc_funcs, NULL);
	421	if (ret) {
	422	DRM_ERROR("Failed to initialize CRTC\n");
	423	goto err_free_unregister;
	424	}
fb1d9738	425
f01b7ba0 MD	426	drm_mode_crtc_set_gamma_size(crtc, 256);
f01b7ba0 MD	427
578e609a TH	428	drm_object_attach_property(&connector->base,
	429	dev_priv->hotplug_mode_update_property, 1);
	430	drm_object_attach_property(&connector->base,
	431	dev->mode_config.suggested_x_property, 0);
	432	drm_object_attach_property(&connector->base,
	433	dev->mode_config.suggested_y_property, 0);
76404ac0 TH	434	if (dev_priv->implicit_placement_property)
	435	drm_object_attach_property
	436	(&connector->base,
	437	dev_priv->implicit_placement_property,
	438	1);
fb1d9738 JB	439
fb1d9738 JB	440	return 0;
36cc79bc SY	441
	442	err_free_unregister:
	443	drm_connector_unregister(connector);
	444	err_free_encoder:
	445	drm_encoder_cleanup(encoder);
	446	err_free_connector:
	447	drm_connector_cleanup(connector);
	448	err_free:
	449	kfree(ldu);
	450	return ret;
fb1d9738 JB	451	}
fb1d9738 JB	452
c8261a96	453	int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
fb1d9738	454	{
7a1c2f6c	455	struct drm_device *dev = dev_priv->dev;
74b5ea30	456	int i, ret;
7a1c2f6c	457
fb1d9738 JB	458	if (dev_priv->ldu_priv) {
	459	DRM_INFO("ldu system already on\n");
	460	return -EINVAL;
	461	}
	462
85b54e0c	463	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
fb1d9738 JB	464	if (!dev_priv->ldu_priv)
	465	return -ENOMEM;
	466
	467	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	468	dev_priv->ldu_priv->num_active = 0;
d7e1958d	469	dev_priv->ldu_priv->last_num_active = 0;
fb1d9738 JB	470	dev_priv->ldu_priv->fb = NULL;
fb1d9738 JB	471
60a16a30 JB	472	/* for old hardware without multimon only enable one display */
	473	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
	474	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
	475	else
	476	ret = drm_vblank_init(dev, 1);
	477	if (ret != 0)
	478	goto err_free;
fb1d9738	479
76404ac0 TH	480	vmw_kms_create_implicit_placement_property(dev_priv, true);
76404ac0 TH	481
60a16a30	482	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
56d1c78d	483	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
7a1c2f6c	484	vmw_ldu_init(dev_priv, i);
60a16a30	485	else
7a1c2f6c	486	vmw_ldu_init(dev_priv, 0);
fb1d9738	487
c8261a96 SY	488	dev_priv->active_display_unit = vmw_du_legacy;
	489
	490	DRM_INFO("Legacy Display Unit initialized\n");
	491
60a16a30 JB	492	return 0;
60a16a30 JB	493
60a16a30 JB	494	err_free:
	495	kfree(dev_priv->ldu_priv);
	496	dev_priv->ldu_priv = NULL;
7a1c2f6c	497	return ret;
fb1d9738 JB	498	}
fb1d9738 JB	499
c8261a96	500	int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
fb1d9738	501	{
7a1c2f6c TH	502	struct drm_device *dev = dev_priv->dev;
7a1c2f6c TH	503
fb1d9738 JB	504	if (!dev_priv->ldu_priv)
	505	return -ENOSYS;
	506
60a16a30 JB	507	drm_vblank_cleanup(dev);
60a16a30 JB	508
fb1d9738 JB	509	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
	510
	511	kfree(dev_priv->ldu_priv);
	512
	513	return 0;
	514	}
c8261a96 SY	515
	516
	517	int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv,
	518	struct vmw_framebuffer *framebuffer,
	519	unsigned flags, unsigned color,
	520	struct drm_clip_rect *clips,
	521	unsigned num_clips, int increment)
	522	{
	523	size_t fifo_size;
	524	int i;
	525
	526	struct {
	527	uint32_t header;
	528	SVGAFifoCmdUpdate body;
	529	} *cmd;
	530
	531	fifo_size = sizeof(cmd) num_clips;
	532	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	533	if (unlikely(cmd == NULL)) {
	534	DRM_ERROR("Fifo reserve failed.\n");
	535	return -ENOMEM;
	536	}
	537
	538	memset(cmd, 0, fifo_size);
	539	for (i = 0; i < num_clips; i++, clips += increment) {
b9eb1a61 TH	540	cmd[i].header = SVGA_CMD_UPDATE;
	541	cmd[i].body.x = clips->x1;
	542	cmd[i].body.y = clips->y1;
	543	cmd[i].body.width = clips->x2 - clips->x1;
	544	cmd[i].body.height = clips->y2 - clips->y1;
c8261a96 SY	545	}
	546
	547	vmw_fifo_commit(dev_priv, fifo_size);
	548	return 0;
	549	}