[linux-2.6-block.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ldu.c

/**************************************************************************
 *
 * Copyright © 2009 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 vmw_display_unit *du = NULL;
	struct drm_framebuffer *fb = NULL;
	struct drm_crtc *crtc = NULL;
	int i = 0, ret;

	/* 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->bits_per_pixel, fb->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->bits_per_pixel, fb->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;


	/* Find the first du with a cursor. */
	list_for_each_entry(entry, &lds->active, active) {
		du = &entry->base;

		if (!du->cursor_dmabuf)
			continue;

		ret = vmw_cursor_update_dmabuf(dev_priv,
					       du->cursor_dmabuf,
					       64, 64,
					       du->hotspot_x,
					       du->hotspot_y);
		if (ret == 0)
			break;

		DRM_ERROR("Could not update cursor image\n");
	}

	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;

	vmw_ldu_add_active(dev_priv, ldu, vfb);

	return vmw_ldu_commit_list(dev_priv);
}

static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	.save = vmw_du_crtc_save,
	.restore = vmw_du_crtc_restore,
	.cursor_set = vmw_du_crtc_cursor_set,
	.cursor_move = vmw_du_crtc_cursor_move,
	.gamma_set = vmw_du_crtc_gamma_set,
	.destroy = vmw_ldu_crtc_destroy,
	.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 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 struct drm_connector_funcs vmw_legacy_connector_funcs = {
	.dpms = vmw_du_connector_dpms,
	.save = vmw_du_connector_save,
	.restore = vmw_du_connector_restore,
	.detect = vmw_du_connector_detect,
	.fill_modes = vmw_du_connector_fill_modes,
	.set_property = vmw_du_connector_set_property,
	.destroy = vmw_ldu_connector_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;

	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;
	ldu->base.is_implicit = true;

	drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
			   DRM_MODE_CONNECTOR_VIRTUAL);
	connector->status = vmw_du_connector_detect(connector, true);

	drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
			 DRM_MODE_ENCODER_VIRTUAL);
	drm_mode_connector_attach_encoder(connector, encoder);
	encoder->possible_crtcs = (1 << unit);
	encoder->possible_clones = 0;

	(void) drm_connector_register(connector);

	drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);

	drm_mode_crtc_set_gamma_size(crtc, 256);

	drm_object_attach_property(&connector->base,
				      dev->mode_config.dirty_info_property,
				      1);

	return 0;
}

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;

	ret = drm_mode_create_dirty_info_property(dev);
	if (ret != 0)
		goto err_vblank_cleanup;

	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_vblank_cleanup:
	drm_vblank_cleanup(dev);
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 = cpu_to_le32(SVGA_CMD_UPDATE);
		cmd[i].body.x = cpu_to_le32(clips->x1);
		cmd[i].body.y = cpu_to_le32(clips->y1);
		cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
		cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
	}

	vmw_fifo_commit(dev_priv, fifo_size);
	return 0;
}
Commit	Line	Data
fb1d9738 JB	1	/**************************************************************************
	2	*
	3	* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
	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;
bfc2638d	78	struct vmw_display_unit *du = NULL;
d7e1958d JB	79	struct drm_framebuffer *fb = NULL;
d7e1958d JB	80	struct drm_crtc *crtc = NULL;
bfc2638d	81	int i = 0, ret;
fb1d9738	82
d7e1958d JB	83	/* If there is no display topology the host just assumes
	84	* that the guest will set the same layout as the host.
	85	*/
	86	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
	87	int w = 0, h = 0;
	88	list_for_each_entry(entry, &lds->active, active) {
	89	crtc = &entry->base.crtc;
	90	w = max(w, crtc->x + crtc->mode.hdisplay);
	91	h = max(h, crtc->y + crtc->mode.vdisplay);
	92	i++;
	93	}
	94
	95	if (crtc == NULL)
	96	return 0;
f4510a27	97	fb = entry->base.crtc.primary->fb;
d7e1958d	98
01f2c773	99	return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
0bef23f9	100	fb->bits_per_pixel, fb->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],
d7e1958d JB	108	fb->bits_per_pixel, fb->depth);
	109	}
	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
bfc2638d JB	134
	135	/* Find the first du with a cursor. */
	136	list_for_each_entry(entry, &lds->active, active) {
	137	du = &entry->base;
	138
	139	if (!du->cursor_dmabuf)
	140	continue;
	141
	142	ret = vmw_cursor_update_dmabuf(dev_priv,
	143	du->cursor_dmabuf,
	144	64, 64,
	145	du->hotspot_x,
	146	du->hotspot_y);
	147	if (ret == 0)
	148	break;
	149
	150	DRM_ERROR("Could not update cursor image\n");
	151	}
	152
fb1d9738 JB	153	return 0;
	154	}
	155
	156	static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
	157	struct vmw_legacy_display_unit *ldu)
	158	{
	159	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	160	if (list_empty(&ldu->active))
	161	return 0;
	162
6a591a96	163	/* Must init otherwise list_empty(&ldu->active) will not work. */
fb1d9738 JB	164	list_del_init(&ldu->active);
	165	if (--(ld->num_active) == 0) {
	166	BUG_ON(!ld->fb);
	167	if (ld->fb->unpin)
	168	ld->fb->unpin(ld->fb);
	169	ld->fb = NULL;
	170	}
	171
	172	return 0;
	173	}
	174
	175	static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
	176	struct vmw_legacy_display_unit *ldu,
	177	struct vmw_framebuffer *vfb)
	178	{
	179	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	180	struct vmw_legacy_display_unit *entry;
	181	struct list_head *at;
	182
04e9e94d JB	183	BUG_ON(!ld->num_active && ld->fb);
	184	if (vfb != ld->fb) {
	185	if (ld->fb && ld->fb->unpin)
	186	ld->fb->unpin(ld->fb);
	187	if (vfb->pin)
	188	vfb->pin(vfb);
	189	ld->fb = vfb;
	190	}
	191
fb1d9738 JB	192	if (!list_empty(&ldu->active))
	193	return 0;
	194
	195	at = &ld->active;
	196	list_for_each_entry(entry, &ld->active, active) {
bbfad336	197	if (entry->base.unit > ldu->base.unit)
fb1d9738 JB	198	break;
	199
	200	at = &entry->active;
	201	}
	202
	203	list_add(&ldu->active, at);
04e9e94d JB	204
04e9e94d JB	205	ld->num_active++;
fb1d9738 JB	206
	207	return 0;
	208	}
	209
	210	static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
	211	{
	212	struct vmw_private *dev_priv;
	213	struct vmw_legacy_display_unit *ldu;
	214	struct drm_connector *connector;
	215	struct drm_display_mode *mode;
	216	struct drm_encoder *encoder;
	217	struct vmw_framebuffer *vfb;
	218	struct drm_framebuffer *fb;
	219	struct drm_crtc *crtc;
	220
	221	if (!set)
	222	return -EINVAL;
	223
	224	if (!set->crtc)
	225	return -EINVAL;
	226
	227	/* get the ldu */
	228	crtc = set->crtc;
	229	ldu = vmw_crtc_to_ldu(crtc);
	230	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	231	dev_priv = vmw_priv(crtc->dev);
	232
	233	if (set->num_connectors > 1) {
	234	DRM_ERROR("to many connectors\n");
	235	return -EINVAL;
	236	}
	237
	238	if (set->num_connectors == 1 &&
	239	set->connectors[0] != &ldu->base.connector) {
	240	DRM_ERROR("connector doesn't match %p %p\n",
	241	set->connectors[0], &ldu->base.connector);
	242	return -EINVAL;
	243	}
	244
	245	/* ldu only supports one fb active at the time */
	246	if (dev_priv->ldu_priv->fb && vfb &&
6a591a96 JB	247	!(dev_priv->ldu_priv->num_active == 1 &&
6a591a96 JB	248	!list_empty(&ldu->active)) &&
fb1d9738 JB	249	dev_priv->ldu_priv->fb != vfb) {
	250	DRM_ERROR("Multiple framebuffers not supported\n");
	251	return -EINVAL;
	252	}
	253
	254	/* since they always map one to one these are safe */
	255	connector = &ldu->base.connector;
	256	encoder = &ldu->base.encoder;
	257
	258	/* should we turn the crtc off? */
	259	if (set->num_connectors == 0 \|\| !set->mode \|\| !set->fb) {
	260
	261	connector->encoder = NULL;
	262	encoder->crtc = NULL;
f4510a27	263	crtc->primary->fb = NULL;
c6c1f325	264	crtc->enabled = false;
fb1d9738 JB	265
	266	vmw_ldu_del_active(dev_priv, ldu);
	267
0bef23f9	268	return vmw_ldu_commit_list(dev_priv);
fb1d9738 JB	269	}
	270
	271
	272	/* we now know we want to set a mode */
	273	mode = set->mode;
	274	fb = set->fb;
	275
	276	if (set->x + mode->hdisplay > fb->width \|\|
	277	set->y + mode->vdisplay > fb->height) {
	278	DRM_ERROR("set outside of framebuffer\n");
	279	return -EINVAL;
	280	}
	281
153b3d5b	282	vmw_svga_enable(dev_priv);
fb1d9738	283
f4510a27	284	crtc->primary->fb = fb;
fb1d9738 JB	285	encoder->crtc = crtc;
	286	connector->encoder = encoder;
	287	crtc->x = set->x;
	288	crtc->y = set->y;
	289	crtc->mode = *mode;
c6c1f325	290	crtc->enabled = true;
fb1d9738 JB	291
	292	vmw_ldu_add_active(dev_priv, ldu, vfb);
	293
0bef23f9	294	return vmw_ldu_commit_list(dev_priv);
fb1d9738 JB	295	}
	296
	297	static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
626ab771 JB	298	.save = vmw_du_crtc_save,
626ab771 JB	299	.restore = vmw_du_crtc_restore,
fb1d9738 JB	300	.cursor_set = vmw_du_crtc_cursor_set,
fb1d9738 JB	301	.cursor_move = vmw_du_crtc_cursor_move,
626ab771	302	.gamma_set = vmw_du_crtc_gamma_set,
fb1d9738 JB	303	.destroy = vmw_ldu_crtc_destroy,
	304	.set_config = vmw_ldu_crtc_set_config,
	305	};
	306
626ab771	307
fb1d9738 JB	308	/*
	309	* Legacy Display Unit encoder functions
	310	*/
	311
	312	static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
	313	{
	314	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
	315	}
	316
	317	static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
	318	.destroy = vmw_ldu_encoder_destroy,
	319	};
	320
	321	/*
	322	* Legacy Display Unit connector functions
	323	*/
	324
fb1d9738 JB	325	static void vmw_ldu_connector_destroy(struct drm_connector *connector)
	326	{
	327	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
	328	}
	329
	330	static struct drm_connector_funcs vmw_legacy_connector_funcs = {
626ab771 JB	331	.dpms = vmw_du_connector_dpms,
	332	.save = vmw_du_connector_save,
	333	.restore = vmw_du_connector_restore,
	334	.detect = vmw_du_connector_detect,
	335	.fill_modes = vmw_du_connector_fill_modes,
	336	.set_property = vmw_du_connector_set_property,
fb1d9738 JB	337	.destroy = vmw_ldu_connector_destroy,
	338	};
	339
	340	static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
	341	{
	342	struct vmw_legacy_display_unit *ldu;
	343	struct drm_device *dev = dev_priv->dev;
	344	struct drm_connector *connector;
	345	struct drm_encoder *encoder;
	346	struct drm_crtc *crtc;
	347
	348	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	349	if (!ldu)
	350	return -ENOMEM;
	351
bbfad336	352	ldu->base.unit = unit;
fb1d9738 JB	353	crtc = &ldu->base.crtc;
	354	encoder = &ldu->base.encoder;
	355	connector = &ldu->base.connector;
	356
1ae1ddd5 JB	357	INIT_LIST_HEAD(&ldu->active);
1ae1ddd5 JB	358
626ab771	359	ldu->base.pref_active = (unit == 0);
eb4f923b JB	360	ldu->base.pref_width = dev_priv->initial_width;
eb4f923b JB	361	ldu->base.pref_height = dev_priv->initial_height;
626ab771	362	ldu->base.pref_mode = NULL;
6987427a	363	ldu->base.is_implicit = true;
d8bd19d2	364
fb1d9738	365	drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
305151e3	366	DRM_MODE_CONNECTOR_VIRTUAL);
626ab771	367	connector->status = vmw_du_connector_detect(connector, true);
fb1d9738 JB	368
fb1d9738 JB	369	drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
305151e3	370	DRM_MODE_ENCODER_VIRTUAL);
fb1d9738 JB	371	drm_mode_connector_attach_encoder(connector, encoder);
	372	encoder->possible_crtcs = (1 << unit);
	373	encoder->possible_clones = 0;
	374
34ea3d38	375	(void) drm_connector_register(connector);
6a0a7a9e	376
fb1d9738 JB	377	drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
fb1d9738 JB	378
f01b7ba0 MD	379	drm_mode_crtc_set_gamma_size(crtc, 256);
f01b7ba0 MD	380
b8b163ba	381	drm_object_attach_property(&connector->base,
fb1d9738 JB	382	dev->mode_config.dirty_info_property,
	383	1);
	384
	385	return 0;
	386	}
	387
c8261a96	388	int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
fb1d9738	389	{
7a1c2f6c	390	struct drm_device *dev = dev_priv->dev;
74b5ea30	391	int i, ret;
7a1c2f6c	392
fb1d9738 JB	393	if (dev_priv->ldu_priv) {
	394	DRM_INFO("ldu system already on\n");
	395	return -EINVAL;
	396	}
	397
85b54e0c	398	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
fb1d9738 JB	399	if (!dev_priv->ldu_priv)
	400	return -ENOMEM;
	401
	402	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	403	dev_priv->ldu_priv->num_active = 0;
d7e1958d	404	dev_priv->ldu_priv->last_num_active = 0;
fb1d9738 JB	405	dev_priv->ldu_priv->fb = NULL;
fb1d9738 JB	406
60a16a30 JB	407	/* for old hardware without multimon only enable one display */
	408	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
	409	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
	410	else
	411	ret = drm_vblank_init(dev, 1);
	412	if (ret != 0)
	413	goto err_free;
fb1d9738	414
60a16a30 JB	415	ret = drm_mode_create_dirty_info_property(dev);
	416	if (ret != 0)
	417	goto err_vblank_cleanup;
	418
	419	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
56d1c78d	420	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
7a1c2f6c	421	vmw_ldu_init(dev_priv, i);
60a16a30	422	else
7a1c2f6c	423	vmw_ldu_init(dev_priv, 0);
fb1d9738	424
c8261a96 SY	425	dev_priv->active_display_unit = vmw_du_legacy;
	426
	427	DRM_INFO("Legacy Display Unit initialized\n");
	428
60a16a30 JB	429	return 0;
	430
	431	err_vblank_cleanup:
	432	drm_vblank_cleanup(dev);
	433	err_free:
	434	kfree(dev_priv->ldu_priv);
	435	dev_priv->ldu_priv = NULL;
7a1c2f6c	436	return ret;
fb1d9738 JB	437	}
fb1d9738 JB	438
c8261a96	439	int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
fb1d9738	440	{
7a1c2f6c TH	441	struct drm_device *dev = dev_priv->dev;
7a1c2f6c TH	442
fb1d9738 JB	443	if (!dev_priv->ldu_priv)
	444	return -ENOSYS;
	445
60a16a30 JB	446	drm_vblank_cleanup(dev);
60a16a30 JB	447
fb1d9738 JB	448	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
	449
	450	kfree(dev_priv->ldu_priv);
	451
	452	return 0;
	453	}
c8261a96 SY	454
	455
	456	int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv,
	457	struct vmw_framebuffer *framebuffer,
	458	unsigned flags, unsigned color,
	459	struct drm_clip_rect *clips,
	460	unsigned num_clips, int increment)
	461	{
	462	size_t fifo_size;
	463	int i;
	464
	465	struct {
	466	uint32_t header;
	467	SVGAFifoCmdUpdate body;
	468	} *cmd;
	469
	470	fifo_size = sizeof(cmd) num_clips;
	471	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
	472	if (unlikely(cmd == NULL)) {
	473	DRM_ERROR("Fifo reserve failed.\n");
	474	return -ENOMEM;
	475	}
	476
	477	memset(cmd, 0, fifo_size);
	478	for (i = 0; i < num_clips; i++, clips += increment) {
	479	cmd[i].header = cpu_to_le32(SVGA_CMD_UPDATE);
	480	cmd[i].body.x = cpu_to_le32(clips->x1);
	481	cmd[i].body.y = cpu_to_le32(clips->y1);
	482	cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
	483	cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
	484	}
	485
	486	vmw_fifo_commit(dev_priv, fifo_size);
	487	return 0;
	488	}