[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->state->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->state->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_enable - 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_enable(struct drm_crtc *crtc)
{
}

/**
 * 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 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_kms_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,
};

static const struct
drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
	.best_encoder = drm_atomic_helper_best_encoder,
};

/*
 * Legacy Display Plane Functions
 */

/**
 * vmw_ldu_primary_plane_cleanup_fb - Noop
 *
 * @plane:  display plane
 * @old_state: Contains the FB to clean up
 *
 * Unpins the display surface
 *
 * Returns 0 on success
 */
static void
vmw_ldu_primary_plane_cleanup_fb(struct drm_plane *plane,
				 struct drm_plane_state *old_state)
{
}


/**
 * vmw_ldu_primary_plane_prepare_fb - Noop
 *
 * @plane:  display plane
 * @new_state: info on the new plane state, including the FB
 *
 * Returns 0 on success
 */
static int
vmw_ldu_primary_plane_prepare_fb(struct drm_plane *plane,
				 struct drm_plane_state *new_state)
{
	return 0;
}


static void
vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
				    struct drm_plane_state *old_state)
{
	struct vmw_private *dev_priv;
	struct vmw_legacy_display_unit *ldu;
	struct vmw_framebuffer *vfb;
	struct drm_framebuffer *fb;
	struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;


	ldu = vmw_crtc_to_ldu(crtc);
	dev_priv = vmw_priv(plane->dev);
	fb       = plane->state->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_commit_list(dev_priv);
}


static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
	.update_plane = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.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 = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.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_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
	.atomic_check = vmw_du_cursor_plane_atomic_check,
	.atomic_update = vmw_du_cursor_plane_atomic_update,
	.prepare_fb = vmw_du_cursor_plane_prepare_fb,
	.cleanup_fb = vmw_du_plane_cleanup_fb,
};

static const struct
drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
	.atomic_check = vmw_du_primary_plane_atomic_check,
	.atomic_update = vmw_ldu_primary_plane_atomic_update,
	.prepare_fb = vmw_ldu_primary_plane_prepare_fb,
	.cleanup_fb = vmw_ldu_primary_plane_cleanup_fb,
};

static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
	.enable = vmw_ldu_crtc_helper_enable,
	.disable = vmw_ldu_crtc_helper_disable,
	.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;
	}

	drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);

	/* 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;
	}

	drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);


	vmw_du_connector_reset(connector);
	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;
	}

	drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
	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)
{
	if (!dev_priv->ldu_priv)
		return -ENOSYS;

	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;
b0119cb9	98	fb = entry->base.crtc.primary->state->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);
b0119cb9	107	fb = entry->base.crtc.primary->state->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
06ec4190	205	/**
4177b51e	206	* vmw_ldu_crtc_helper_enable - Noop
06ec4190 SY	207	*
	208	* @crtc: CRTC associated with the new screen
	209	*
	210	* This is called after a mode set has been completed. Here's
	211	* usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
	212	* but since for LDU the display plane is closely tied to the
	213	* CRTC, it makes more sense to do those at plane update time.
	214	*/
4177b51e	215	static void vmw_ldu_crtc_helper_enable(struct drm_crtc *crtc)
06ec4190	216	{
06ec4190 SY	217	}
	218
	219	/**
	220	* vmw_ldu_crtc_helper_disable - Turns off CRTC
	221	*
	222	* @crtc: CRTC to be turned off
	223	*/
	224	static void vmw_ldu_crtc_helper_disable(struct drm_crtc *crtc)
	225	{
	226	}
	227
d7955fcf	228	static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
626ab771	229	.gamma_set = vmw_du_crtc_gamma_set,
fb1d9738	230	.destroy = vmw_ldu_crtc_destroy,
9c2542a4 SY	231	.reset = vmw_du_crtc_reset,
	232	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
	233	.atomic_destroy_state = vmw_du_crtc_destroy_state,
b0119cb9	234	.set_config = vmw_kms_set_config,
fb1d9738 JB	235	};
fb1d9738 JB	236
626ab771	237
fb1d9738 JB	238	/*
	239	* Legacy Display Unit encoder functions
	240	*/
	241
	242	static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
	243	{
	244	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
	245	}
	246
d7955fcf	247	static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
fb1d9738 JB	248	.destroy = vmw_ldu_encoder_destroy,
	249	};
	250
	251	/*
	252	* Legacy Display Unit connector functions
	253	*/
	254
fb1d9738 JB	255	static void vmw_ldu_connector_destroy(struct drm_connector *connector)
	256	{
	257	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
	258	}
	259
d7955fcf	260	static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
626ab771	261	.dpms = vmw_du_connector_dpms,
626ab771 JB	262	.detect = vmw_du_connector_detect,
	263	.fill_modes = vmw_du_connector_fill_modes,
	264	.set_property = vmw_du_connector_set_property,
fb1d9738	265	.destroy = vmw_ldu_connector_destroy,
d7721ca7 SY	266	.reset = vmw_du_connector_reset,
	267	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	268	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
	269	.atomic_set_property = vmw_du_connector_atomic_set_property,
	270	.atomic_get_property = vmw_du_connector_atomic_get_property,
fb1d9738 JB	271	};
fb1d9738 JB	272
d947d1b7 SY	273	static const struct
	274	drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
	275	.best_encoder = drm_atomic_helper_best_encoder,
	276	};
	277
36cc79bc SY	278	/*
	279	* Legacy Display Plane Functions
	280	*/
	281
060e2ad5	282	/**
e9cebe83	283	* vmw_ldu_primary_plane_cleanup_fb - Noop
060e2ad5 SY	284	*
	285	* @plane: display plane
	286	* @old_state: Contains the FB to clean up
	287	*
	288	* Unpins the display surface
	289	*
	290	* Returns 0 on success
	291	*/
	292	static void
	293	vmw_ldu_primary_plane_cleanup_fb(struct drm_plane *plane,
	294	struct drm_plane_state *old_state)
	295	{
	296	}
	297
	298
	299	/**
e9cebe83	300	* vmw_ldu_primary_plane_prepare_fb - Noop
060e2ad5 SY	301	*
	302	* @plane: display plane
	303	* @new_state: info on the new plane state, including the FB
	304	*
	305	* Returns 0 on success
	306	*/
	307	static int
	308	vmw_ldu_primary_plane_prepare_fb(struct drm_plane *plane,
	309	struct drm_plane_state *new_state)
	310	{
	311	return 0;
	312	}
	313
	314
	315	static void
	316	vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
	317	struct drm_plane_state *old_state)
	318	{
e9cebe83 SY	319	struct vmw_private *dev_priv;
	320	struct vmw_legacy_display_unit *ldu;
	321	struct vmw_framebuffer *vfb;
	322	struct drm_framebuffer *fb;
	323	struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
	324
	325
	326	ldu = vmw_crtc_to_ldu(crtc);
	327	dev_priv = vmw_priv(plane->dev);
	328	fb = plane->state->fb;
	329
	330	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
	331
	332	if (vfb)
	333	vmw_ldu_add_active(dev_priv, ldu, vfb);
	334	else
	335	vmw_ldu_del_active(dev_priv, ldu);
	336
	337	vmw_ldu_commit_list(dev_priv);
060e2ad5 SY	338	}
	339
	340
36cc79bc	341	static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
b0119cb9 SY	342	.update_plane = drm_atomic_helper_update_plane,
b0119cb9 SY	343	.disable_plane = drm_atomic_helper_disable_plane,
36cc79bc	344	.destroy = vmw_du_primary_plane_destroy,
cc5ec459 SY	345	.reset = vmw_du_plane_reset,
	346	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	347	.atomic_destroy_state = vmw_du_plane_destroy_state,
36cc79bc SY	348	};
	349
	350	static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
b0119cb9 SY	351	.update_plane = drm_atomic_helper_update_plane,
b0119cb9 SY	352	.disable_plane = drm_atomic_helper_disable_plane,
36cc79bc	353	.destroy = vmw_du_cursor_plane_destroy,
cc5ec459 SY	354	.reset = vmw_du_plane_reset,
	355	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	356	.atomic_destroy_state = vmw_du_plane_destroy_state,
36cc79bc SY	357	};
36cc79bc SY	358
06ec4190 SY	359	/*
	360	* Atomic Helpers
	361	*/
060e2ad5 SY	362	static const struct
	363	drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
	364	.atomic_check = vmw_du_cursor_plane_atomic_check,
	365	.atomic_update = vmw_du_cursor_plane_atomic_update,
	366	.prepare_fb = vmw_du_cursor_plane_prepare_fb,
	367	.cleanup_fb = vmw_du_plane_cleanup_fb,
	368	};
	369
	370	static const struct
	371	drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
	372	.atomic_check = vmw_du_primary_plane_atomic_check,
	373	.atomic_update = vmw_ldu_primary_plane_atomic_update,
	374	.prepare_fb = vmw_ldu_primary_plane_prepare_fb,
	375	.cleanup_fb = vmw_ldu_primary_plane_cleanup_fb,
	376	};
	377
06ec4190	378	static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
4177b51e	379	.enable = vmw_ldu_crtc_helper_enable,
06ec4190	380	.disable = vmw_ldu_crtc_helper_disable,
06ec4190 SY	381	.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
	382	.atomic_check = vmw_du_crtc_atomic_check,
	383	.atomic_begin = vmw_du_crtc_atomic_begin,
	384	.atomic_flush = vmw_du_crtc_atomic_flush,
	385	};
	386
36cc79bc	387
fb1d9738 JB	388	static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
	389	{
	390	struct vmw_legacy_display_unit *ldu;
	391	struct drm_device *dev = dev_priv->dev;
	392	struct drm_connector *connector;
	393	struct drm_encoder *encoder;
cc5ec459	394	struct drm_plane primary, cursor;
fb1d9738	395	struct drm_crtc *crtc;
36cc79bc	396	int ret;
fb1d9738 JB	397
	398	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	399	if (!ldu)
	400	return -ENOMEM;
	401
bbfad336	402	ldu->base.unit = unit;
fb1d9738 JB	403	crtc = &ldu->base.crtc;
	404	encoder = &ldu->base.encoder;
	405	connector = &ldu->base.connector;
cc5ec459 SY	406	primary = &ldu->base.primary;
cc5ec459 SY	407	cursor = &ldu->base.cursor;
fb1d9738	408
1ae1ddd5 JB	409	INIT_LIST_HEAD(&ldu->active);
1ae1ddd5 JB	410
626ab771	411	ldu->base.pref_active = (unit == 0);
eb4f923b JB	412	ldu->base.pref_width = dev_priv->initial_width;
eb4f923b JB	413	ldu->base.pref_height = dev_priv->initial_height;
626ab771	414	ldu->base.pref_mode = NULL;
9c2542a4 SY	415
	416	/*
	417	* Remove this after enabling atomic because property values can
	418	* only exist in a state object
	419	*/
6987427a	420	ldu->base.is_implicit = true;
d8bd19d2	421
36cc79bc	422	/* Initialize primary plane */
cc5ec459 SY	423	vmw_du_plane_reset(primary);
cc5ec459 SY	424
36cc79bc SY	425	ret = drm_universal_plane_init(dev, &ldu->base.primary,
	426	0, &vmw_ldu_plane_funcs,
	427	vmw_primary_plane_formats,
	428	ARRAY_SIZE(vmw_primary_plane_formats),
	429	DRM_PLANE_TYPE_PRIMARY, NULL);
	430	if (ret) {
	431	DRM_ERROR("Failed to initialize primary plane");
	432	goto err_free;
	433	}
	434
060e2ad5 SY	435	drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
060e2ad5 SY	436
36cc79bc	437	/* Initialize cursor plane */
cc5ec459 SY	438	vmw_du_plane_reset(cursor);
cc5ec459 SY	439
36cc79bc SY	440	ret = drm_universal_plane_init(dev, &ldu->base.cursor,
	441	0, &vmw_ldu_cursor_funcs,
	442	vmw_cursor_plane_formats,
	443	ARRAY_SIZE(vmw_cursor_plane_formats),
	444	DRM_PLANE_TYPE_CURSOR, NULL);
	445	if (ret) {
	446	DRM_ERROR("Failed to initialize cursor plane");
	447	drm_plane_cleanup(&ldu->base.primary);
	448	goto err_free;
	449	}
	450
060e2ad5 SY	451	drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);
	452
	453
	454	vmw_du_connector_reset(connector);
36cc79bc SY	455	ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
	456	DRM_MODE_CONNECTOR_VIRTUAL);
	457	if (ret) {
	458	DRM_ERROR("Failed to initialize connector\n");
	459	goto err_free;
	460	}
d947d1b7 SY	461
d947d1b7 SY	462	drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
626ab771	463	connector->status = vmw_du_connector_detect(connector, true);
d7721ca7 SY	464	vmw_connector_state_to_vcs(connector->state)->is_implicit = true;
d7721ca7 SY	465
fb1d9738	466
36cc79bc SY	467	ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
	468	DRM_MODE_ENCODER_VIRTUAL, NULL);
	469	if (ret) {
	470	DRM_ERROR("Failed to initialize encoder\n");
	471	goto err_free_connector;
	472	}
	473
	474	(void) drm_mode_connector_attach_encoder(connector, encoder);
fb1d9738 JB	475	encoder->possible_crtcs = (1 << unit);
	476	encoder->possible_clones = 0;
	477
36cc79bc SY	478	ret = drm_connector_register(connector);
	479	if (ret) {
	480	DRM_ERROR("Failed to register connector\n");
	481	goto err_free_encoder;
	482	}
6a0a7a9e	483
d7721ca7 SY	484
d7721ca7 SY	485	vmw_du_crtc_reset(crtc);
36cc79bc SY	486	ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
	487	&ldu->base.cursor,
	488	&vmw_legacy_crtc_funcs, NULL);
	489	if (ret) {
	490	DRM_ERROR("Failed to initialize CRTC\n");
	491	goto err_free_unregister;
	492	}
fb1d9738	493
06ec4190 SY	494	drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
06ec4190 SY	495
f01b7ba0 MD	496	drm_mode_crtc_set_gamma_size(crtc, 256);
f01b7ba0 MD	497
578e609a TH	498	drm_object_attach_property(&connector->base,
	499	dev_priv->hotplug_mode_update_property, 1);
	500	drm_object_attach_property(&connector->base,
	501	dev->mode_config.suggested_x_property, 0);
	502	drm_object_attach_property(&connector->base,
	503	dev->mode_config.suggested_y_property, 0);
76404ac0 TH	504	if (dev_priv->implicit_placement_property)
	505	drm_object_attach_property
	506	(&connector->base,
	507	dev_priv->implicit_placement_property,
	508	1);
fb1d9738 JB	509
fb1d9738 JB	510	return 0;
36cc79bc SY	511
	512	err_free_unregister:
	513	drm_connector_unregister(connector);
	514	err_free_encoder:
	515	drm_encoder_cleanup(encoder);
	516	err_free_connector:
	517	drm_connector_cleanup(connector);
	518	err_free:
	519	kfree(ldu);
	520	return ret;
fb1d9738 JB	521	}
fb1d9738 JB	522
c8261a96	523	int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
fb1d9738	524	{
7a1c2f6c	525	struct drm_device *dev = dev_priv->dev;
74b5ea30	526	int i, ret;
7a1c2f6c	527
fb1d9738 JB	528	if (dev_priv->ldu_priv) {
	529	DRM_INFO("ldu system already on\n");
	530	return -EINVAL;
	531	}
	532
85b54e0c	533	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
fb1d9738 JB	534	if (!dev_priv->ldu_priv)
	535	return -ENOMEM;
	536
	537	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	538	dev_priv->ldu_priv->num_active = 0;
d7e1958d	539	dev_priv->ldu_priv->last_num_active = 0;
fb1d9738 JB	540	dev_priv->ldu_priv->fb = NULL;
fb1d9738 JB	541
60a16a30 JB	542	/* for old hardware without multimon only enable one display */
	543	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
	544	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
	545	else
	546	ret = drm_vblank_init(dev, 1);
	547	if (ret != 0)
	548	goto err_free;
fb1d9738	549
76404ac0 TH	550	vmw_kms_create_implicit_placement_property(dev_priv, true);
76404ac0 TH	551
60a16a30	552	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
56d1c78d	553	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
7a1c2f6c	554	vmw_ldu_init(dev_priv, i);
60a16a30	555	else
7a1c2f6c	556	vmw_ldu_init(dev_priv, 0);
fb1d9738	557
c8261a96 SY	558	dev_priv->active_display_unit = vmw_du_legacy;
	559
	560	DRM_INFO("Legacy Display Unit initialized\n");
	561
60a16a30 JB	562	return 0;
60a16a30 JB	563
60a16a30 JB	564	err_free:
	565	kfree(dev_priv->ldu_priv);
	566	dev_priv->ldu_priv = NULL;
7a1c2f6c	567	return ret;
fb1d9738 JB	568	}
fb1d9738 JB	569
c8261a96	570	int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
fb1d9738 JB	571	{
	572	if (!dev_priv->ldu_priv)
	573	return -ENOSYS;
	574
	575	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
	576
	577	kfree(dev_priv->ldu_priv);
	578
	579	return 0;
	580	}
c8261a96 SY	581
	582
	583	int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv,
	584	struct vmw_framebuffer *framebuffer,
	585	unsigned flags, unsigned color,
	586	struct drm_clip_rect *clips,
	587	unsigned num_clips, int increment)
	588	{
	589	size_t fifo_size;
	590	int i;
	591
	592	struct {
	593	uint32_t header;
	594	SVGAFifoCmdUpdate body;
	595	} *cmd;
	596
	597	fifo_size = sizeof(cmd) num_clips;
	598	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	599	if (unlikely(cmd == NULL)) {
	600	DRM_ERROR("Fifo reserve failed.\n");
	601	return -ENOMEM;
	602	}
	603
	604	memset(cmd, 0, fifo_size);
	605	for (i = 0; i < num_clips; i++, clips += increment) {
b9eb1a61 TH	606	cmd[i].header = SVGA_CMD_UPDATE;
	607	cmd[i].body.x = clips->x1;
	608	cmd[i].body.y = clips->y1;
	609	cmd[i].body.width = clips->x2 - clips->x1;
	610	cmd[i].body.height = clips->y2 - clips->y1;
c8261a96 SY	611	}
	612
	613	vmw_fifo_commit(dev_priv, fifo_size);
	614	return 0;
	615	}