[deliverable/linux.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"

#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_display_unit_cleanup(&ldu->base);
	kfree(ldu);
}


/*
 * Legacy Display Unit CRTC functions
 */

static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
{
}

static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
{
}

static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
				   u16 *r, u16 *g, u16 *b,
				   uint32_t size)
{
}

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.fb;

		vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
				   fb->bits_per_pixel, fb->depth);

		return 0;
	}

	for (i = 0; i < lds->last_num_active; i++) {
		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, 0);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, 0);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, 0);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	}

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

		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
				   fb->bits_per_pixel, fb->depth);
	}

	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++;
	}

	/* Make sure we always show something. */
	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, i ? i : 1);

	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->fb = NULL;

		vmw_ldu_del_active(dev_priv, ldu);

		vmw_ldu_commit_list(dev_priv);

		return 0;
	}


	/* 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_fb_off(dev_priv);

	crtc->fb = fb;
	encoder->crtc = crtc;
	connector->encoder = encoder;
	crtc->x = set->x;
	crtc->y = set->y;
	crtc->mode = *mode;

	vmw_ldu_add_active(dev_priv, ldu, vfb);

	vmw_ldu_commit_list(dev_priv);

	return 0;
}

static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	.save = vmw_ldu_crtc_save,
	.restore = vmw_ldu_crtc_restore,
	.cursor_set = vmw_du_crtc_cursor_set,
	.cursor_move = vmw_du_crtc_cursor_move,
	.gamma_set = vmw_ldu_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_dpms(struct drm_connector *connector, int mode)
{
}

static void vmw_ldu_connector_save(struct drm_connector *connector)
{
}

static void vmw_ldu_connector_restore(struct drm_connector *connector)
{
}

static enum drm_connector_status
	vmw_ldu_connector_detect(struct drm_connector *connector)
{
	/* XXX vmwctrl should control connection status */
	if (vmw_connector_to_ldu(connector)->base.unit == 0)
		return connector_status_connected;
	return connector_status_disconnected;
}

static struct drm_display_mode vmw_ldu_connector_builtin[] = {
	/* 640x480@60Hz */
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
		   752, 800, 0, 480, 489, 492, 525, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 800x600@60Hz */
	{ DRM_MODE("800x600",
		   DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
		   40000, 800, 840, 968, 1056, 0, 600, 601, 605, 628,
		   0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1024x768@60Hz */
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
		   1184, 1344, 0, 768, 771, 777, 806, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 1152x864@75Hz */
	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
		   1344, 1600, 0, 864, 865, 868, 900, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x768@60Hz */
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
		   1472, 1664, 0, 768, 771, 778, 798, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x800@60Hz */
	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
		   1480, 1680, 0, 800, 803, 809, 831, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 1280x960@60Hz */
	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
		   1488, 1800, 0, 960, 961, 964, 1000, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x1024@60Hz */
	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
		   1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1360x768@60Hz */
	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
		   1536, 1792, 0, 768, 771, 777, 795, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1440x1050@60Hz */
	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
		   1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1440x900@60Hz */
	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
		   1672, 1904, 0, 900, 903, 909, 934, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1600x1200@60Hz */
	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
		   1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1680x1050@60Hz */
	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
		   1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1792x1344@60Hz */
	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
		   2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1853x1392@60Hz */
	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
		   2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1920x1200@60Hz */
	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
		   2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1920x1440@60Hz */
	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
		   2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 2560x1600@60Hz */
	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
		   3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* Terminate */
	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
};

static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
					uint32_t max_width, uint32_t max_height)
{
	struct drm_device *dev = connector->dev;
	struct drm_display_mode *mode = NULL;
	int i;

	for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
		if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
		    vmw_ldu_connector_builtin[i].vdisplay > max_height)
			continue;

		mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
		if (!mode)
			return 0;
		mode->vrefresh = drm_mode_vrefresh(mode);

		drm_mode_probed_add(connector, mode);
	}

	drm_mode_connector_list_update(connector);

	return 1;
}

static int vmw_ldu_connector_set_property(struct drm_connector *connector,
					  struct drm_property *property,
					  uint64_t val)
{
	return 0;
}

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_ldu_connector_dpms,
	.save = vmw_ldu_connector_save,
	.restore = vmw_ldu_connector_restore,
	.detect = vmw_ldu_connector_detect,
	.fill_modes = vmw_ldu_connector_fill_modes,
	.set_property = vmw_ldu_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);

	drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
			   DRM_MODE_CONNECTOR_LVDS);
	connector->status = vmw_ldu_connector_detect(connector);

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

	drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);

	drm_connector_attach_property(connector,
				      dev->mode_config.dirty_info_property,
				      1);

	return 0;
}

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

	dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));

	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;

	drm_mode_create_dirty_info_property(dev_priv->dev);

	vmw_ldu_init(dev_priv, 0);
	/* for old hardware without multimon only enable one display */
	if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
		vmw_ldu_init(dev_priv, 1);
		vmw_ldu_init(dev_priv, 2);
		vmw_ldu_init(dev_priv, 3);
		vmw_ldu_init(dev_priv, 4);
		vmw_ldu_init(dev_priv, 5);
		vmw_ldu_init(dev_priv, 6);
		vmw_ldu_init(dev_priv, 7);
	}

	return 0;
}

int vmw_kms_close_legacy_display_system(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;
}
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"
	29
	30	#define vmw_crtc_to_ldu(x) \
	31	container_of(x, struct vmw_legacy_display_unit, base.crtc)
	32	#define vmw_encoder_to_ldu(x) \
	33	container_of(x, struct vmw_legacy_display_unit, base.encoder)
	34	#define vmw_connector_to_ldu(x) \
	35	container_of(x, struct vmw_legacy_display_unit, base.connector)
	36
	37	struct vmw_legacy_display {
	38	struct list_head active;
	39
	40	unsigned num_active;
d7e1958d	41	unsigned last_num_active;
fb1d9738 JB	42
	43	struct vmw_framebuffer *fb;
	44	};
	45
	46	/**
	47	* Display unit using the legacy register interface.
	48	*/
	49	struct vmw_legacy_display_unit {
	50	struct vmw_display_unit base;
	51
	52	struct list_head active;
fb1d9738 JB	53	};
	54
	55	static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
	56	{
	57	list_del_init(&ldu->active);
	58	vmw_display_unit_cleanup(&ldu->base);
	59	kfree(ldu);
	60	}
	61
	62
	63	/*
	64	* Legacy Display Unit CRTC functions
	65	*/
	66
	67	static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
	68	{
	69	}
	70
	71	static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
	72	{
	73	}
	74
	75	static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
	76	u16 r, u16 g, u16 *b,
	77	uint32_t size)
	78	{
	79	}
	80
	81	static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
	82	{
	83	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
	84	}
	85
	86	static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
	87	{
	88	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	89	struct vmw_legacy_display_unit *entry;
d7e1958d JB	90	struct drm_framebuffer *fb = NULL;
d7e1958d JB	91	struct drm_crtc *crtc = NULL;
fb1d9738 JB	92	int i = 0;
fb1d9738 JB	93
d7e1958d JB	94	/* If there is no display topology the host just assumes
	95	* that the guest will set the same layout as the host.
	96	*/
	97	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
	98	int w = 0, h = 0;
	99	list_for_each_entry(entry, &lds->active, active) {
	100	crtc = &entry->base.crtc;
	101	w = max(w, crtc->x + crtc->mode.hdisplay);
	102	h = max(h, crtc->y + crtc->mode.vdisplay);
	103	i++;
	104	}
	105
	106	if (crtc == NULL)
	107	return 0;
	108	fb = entry->base.crtc.fb;
	109
d7e1958d JB	110	vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
d7e1958d JB	111	fb->bits_per_pixel, fb->depth);
d7e1958d JB	112
	113	return 0;
	114	}
	115
d7e1958d	116	for (i = 0; i < lds->last_num_active; i++) {
fb1d9738 JB	117	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
	118	vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
	119	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
	120	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, 0);
	121	vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, 0);
	122	vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
	123	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	124	}
	125
d7e1958d JB	126	if (!list_empty(&lds->active)) {
	127	entry = list_entry(lds->active.next, typeof(*entry), active);
	128	fb = entry->base.crtc.fb;
	129
	130	vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
	131	fb->bits_per_pixel, fb->depth);
	132	}
	133
fb1d9738 JB	134	i = 0;
	135	list_for_each_entry(entry, &lds->active, active) {
	136	crtc = &entry->base.crtc;
	137
	138	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
	139	vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
	140	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
	141	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
	142	vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
	143	vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
	144	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	145
	146	i++;
	147	}
	148
d7e1958d JB	149	/* Make sure we always show something. */
d7e1958d JB	150	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, i ? i : 1);
d7e1958d JB	151
	152	BUG_ON(i != lds->num_active);
	153
	154	lds->last_num_active = lds->num_active;
	155
fb1d9738 JB	156	return 0;
	157	}
	158
	159	static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
	160	struct vmw_legacy_display_unit *ldu)
	161	{
	162	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	163	if (list_empty(&ldu->active))
	164	return 0;
	165
6a591a96	166	/* Must init otherwise list_empty(&ldu->active) will not work. */
fb1d9738 JB	167	list_del_init(&ldu->active);
	168	if (--(ld->num_active) == 0) {
	169	BUG_ON(!ld->fb);
	170	if (ld->fb->unpin)
	171	ld->fb->unpin(ld->fb);
	172	ld->fb = NULL;
	173	}
	174
	175	return 0;
	176	}
	177
	178	static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
	179	struct vmw_legacy_display_unit *ldu,
	180	struct vmw_framebuffer *vfb)
	181	{
	182	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	183	struct vmw_legacy_display_unit *entry;
	184	struct list_head *at;
	185
04e9e94d JB	186	BUG_ON(!ld->num_active && ld->fb);
	187	if (vfb != ld->fb) {
	188	if (ld->fb && ld->fb->unpin)
	189	ld->fb->unpin(ld->fb);
	190	if (vfb->pin)
	191	vfb->pin(vfb);
	192	ld->fb = vfb;
	193	}
	194
fb1d9738 JB	195	if (!list_empty(&ldu->active))
	196	return 0;
	197
	198	at = &ld->active;
	199	list_for_each_entry(entry, &ld->active, active) {
bbfad336	200	if (entry->base.unit > ldu->base.unit)
fb1d9738 JB	201	break;
	202
	203	at = &entry->active;
	204	}
	205
	206	list_add(&ldu->active, at);
04e9e94d JB	207
04e9e94d JB	208	ld->num_active++;
fb1d9738 JB	209
	210	return 0;
	211	}
	212
	213	static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
	214	{
	215	struct vmw_private *dev_priv;
	216	struct vmw_legacy_display_unit *ldu;
	217	struct drm_connector *connector;
	218	struct drm_display_mode *mode;
	219	struct drm_encoder *encoder;
	220	struct vmw_framebuffer *vfb;
	221	struct drm_framebuffer *fb;
	222	struct drm_crtc *crtc;
	223
	224	if (!set)
	225	return -EINVAL;
	226
	227	if (!set->crtc)
	228	return -EINVAL;
	229
	230	/* get the ldu */
	231	crtc = set->crtc;
	232	ldu = vmw_crtc_to_ldu(crtc);
	233	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	234	dev_priv = vmw_priv(crtc->dev);
	235
	236	if (set->num_connectors > 1) {
	237	DRM_ERROR("to many connectors\n");
	238	return -EINVAL;
	239	}
	240
	241	if (set->num_connectors == 1 &&
	242	set->connectors[0] != &ldu->base.connector) {
	243	DRM_ERROR("connector doesn't match %p %p\n",
	244	set->connectors[0], &ldu->base.connector);
	245	return -EINVAL;
	246	}
	247
	248	/* ldu only supports one fb active at the time */
	249	if (dev_priv->ldu_priv->fb && vfb &&
6a591a96 JB	250	!(dev_priv->ldu_priv->num_active == 1 &&
6a591a96 JB	251	!list_empty(&ldu->active)) &&
fb1d9738 JB	252	dev_priv->ldu_priv->fb != vfb) {
	253	DRM_ERROR("Multiple framebuffers not supported\n");
	254	return -EINVAL;
	255	}
	256
	257	/* since they always map one to one these are safe */
	258	connector = &ldu->base.connector;
	259	encoder = &ldu->base.encoder;
	260
	261	/* should we turn the crtc off? */
	262	if (set->num_connectors == 0 \|\| !set->mode \|\| !set->fb) {
	263
	264	connector->encoder = NULL;
	265	encoder->crtc = NULL;
	266	crtc->fb = NULL;
	267
	268	vmw_ldu_del_active(dev_priv, ldu);
	269
	270	vmw_ldu_commit_list(dev_priv);
	271
	272	return 0;
	273	}
	274
	275
	276	/* we now know we want to set a mode */
	277	mode = set->mode;
	278	fb = set->fb;
	279
	280	if (set->x + mode->hdisplay > fb->width \|\|
	281	set->y + mode->vdisplay > fb->height) {
	282	DRM_ERROR("set outside of framebuffer\n");
	283	return -EINVAL;
	284	}
	285
	286	vmw_fb_off(dev_priv);
	287
	288	crtc->fb = fb;
	289	encoder->crtc = crtc;
	290	connector->encoder = encoder;
	291	crtc->x = set->x;
	292	crtc->y = set->y;
	293	crtc->mode = *mode;
	294
	295	vmw_ldu_add_active(dev_priv, ldu, vfb);
	296
	297	vmw_ldu_commit_list(dev_priv);
	298
	299	return 0;
	300	}
	301
	302	static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	303	.save = vmw_ldu_crtc_save,
	304	.restore = vmw_ldu_crtc_restore,
	305	.cursor_set = vmw_du_crtc_cursor_set,
	306	.cursor_move = vmw_du_crtc_cursor_move,
	307	.gamma_set = vmw_ldu_crtc_gamma_set,
	308	.destroy = vmw_ldu_crtc_destroy,
	309	.set_config = vmw_ldu_crtc_set_config,
	310	};
	311
	312	/*
	313	* Legacy Display Unit encoder functions
	314	*/
	315
316	static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
317	{
318	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
319	}
320
321	static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
322	.destroy = vmw_ldu_encoder_destroy,
323	};
324
325	/*
326	* Legacy Display Unit connector functions
327	*/
328
329	static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
330	{
331	}
332
333	static void vmw_ldu_connector_save(struct drm_connector *connector)
334	{
335	}
336
337	static void vmw_ldu_connector_restore(struct drm_connector *connector)
338	{
339	}
340
341	static enum drm_connector_status
342	vmw_ldu_connector_detect(struct drm_connector *connector)
343	{
344	/* XXX vmwctrl should control connection status */
345	if (vmw_connector_to_ldu(connector)->base.unit == 0)
346	return connector_status_connected;
347	return connector_status_disconnected;
348	}
349
350	static struct drm_display_mode vmw_ldu_connector_builtin[] = {
351	/* 640x480@60Hz */
352	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
353	752, 800, 0, 480, 489, 492, 525, 0,
354	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
355	/* 800x600@60Hz */
356	{ DRM_MODE("800x600",
357	DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED,
358	40000, 800, 840, 968, 1056, 0, 600, 601, 605, 628,
359	0, DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
360	/* 1024x768@60Hz */
361	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
362	1184, 1344, 0, 768, 771, 777, 806, 0,
363	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
364	/* 1152x864@75Hz */
365	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
366	1344, 1600, 0, 864, 865, 868, 900, 0,
367	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
368	/* 1280x768@60Hz */
369	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
370	1472, 1664, 0, 768, 771, 778, 798, 0,
371	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
372	/* 1280x800@60Hz */
373	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
374	1480, 1680, 0, 800, 803, 809, 831, 0,
375	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_NVSYNC) },
376	/* 1280x960@60Hz */
377	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
378	1488, 1800, 0, 960, 961, 964, 1000, 0,
379	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
380	/* 1280x1024@60Hz */
381	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
382	1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
383	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
384	/* 1360x768@60Hz */
385	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
386	1536, 1792, 0, 768, 771, 777, 795, 0,
387	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
388	/* 1440x1050@60Hz */
389	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
390	1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
391	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
392	/* 1440x900@60Hz */
393	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
394	1672, 1904, 0, 900, 903, 909, 934, 0,
395	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
396	/* 1600x1200@60Hz */
397	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
398	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
399	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
400	/* 1680x1050@60Hz */
401	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
402	1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
403	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
404	/* 1792x1344@60Hz */
405	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
406	2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
407	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
408	/* 1853x1392@60Hz */
409	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
410	2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
411	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
412	/* 1920x1200@60Hz */
413	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
414	2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
415	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
416	/* 1920x1440@60Hz */
417	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
418	2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
419	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
420	/* 2560x1600@60Hz */
421	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
422	3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
423	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
424	/* Terminate */
425	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
426	};
427
428	static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
429	uint32_t max_width, uint32_t max_height)
430	{
431	struct drm_device *dev = connector->dev;
432	struct drm_display_mode *mode = NULL;
433	int i;
434
435	for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
436	if (vmw_ldu_connector_builtin[i].hdisplay > max_width \|\|
437	vmw_ldu_connector_builtin[i].vdisplay > max_height)
438	continue;
439
440	mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
441	if (!mode)
442	return 0;
443	mode->vrefresh = drm_mode_vrefresh(mode);
444
445	drm_mode_probed_add(connector, mode);
446	}
447
448	drm_mode_connector_list_update(connector);
449
450	return 1;
451	}
452
453	static int vmw_ldu_connector_set_property(struct drm_connector *connector,
454	struct drm_property *property,
455	uint64_t val)
456	{
457	return 0;
458	}
459
460	static void vmw_ldu_connector_destroy(struct drm_connector *connector)
461	{
462	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
463	}
464
465	static struct drm_connector_funcs vmw_legacy_connector_funcs = {
466	.dpms = vmw_ldu_connector_dpms,
467	.save = vmw_ldu_connector_save,
468	.restore = vmw_ldu_connector_restore,
469	.detect = vmw_ldu_connector_detect,
470	.fill_modes = vmw_ldu_connector_fill_modes,
471	.set_property = vmw_ldu_connector_set_property,
472	.destroy = vmw_ldu_connector_destroy,
473	};
474
475	static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
476	{
477	struct vmw_legacy_display_unit *ldu;
478	struct drm_device *dev = dev_priv->dev;
479	struct drm_connector *connector;
480	struct drm_encoder *encoder;
481	struct drm_crtc *crtc;
482
483	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
484	if (!ldu)
485	return -ENOMEM;
486
bbfad336	487	ldu->base.unit = unit;
fb1d9738 JB	488	crtc = &ldu->base.crtc;
	489	encoder = &ldu->base.encoder;
	490	connector = &ldu->base.connector;
	491
1ae1ddd5 JB	492	INIT_LIST_HEAD(&ldu->active);
1ae1ddd5 JB	493
fb1d9738 JB	494	drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
fb1d9738 JB	495	DRM_MODE_CONNECTOR_LVDS);
1ae1ddd5	496	connector->status = vmw_ldu_connector_detect(connector);
fb1d9738 JB	497
	498	drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
	499	DRM_MODE_ENCODER_LVDS);
	500	drm_mode_connector_attach_encoder(connector, encoder);
	501	encoder->possible_crtcs = (1 << unit);
	502	encoder->possible_clones = 0;
	503
fb1d9738 JB	504	drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
	505
	506	drm_connector_attach_property(connector,
	507	dev->mode_config.dirty_info_property,
	508	1);
	509
	510	return 0;
	511	}
	512
	513	int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
	514	{
	515	if (dev_priv->ldu_priv) {
	516	DRM_INFO("ldu system already on\n");
	517	return -EINVAL;
	518	}
	519
	520	dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
	521
	522	if (!dev_priv->ldu_priv)
	523	return -ENOMEM;
	524
	525	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	526	dev_priv->ldu_priv->num_active = 0;
d7e1958d	527	dev_priv->ldu_priv->last_num_active = 0;
fb1d9738 JB	528	dev_priv->ldu_priv->fb = NULL;
	529
	530	drm_mode_create_dirty_info_property(dev_priv->dev);
	531
	532	vmw_ldu_init(dev_priv, 0);
d7e1958d JB	533	/* for old hardware without multimon only enable one display */
	534	if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
	535	vmw_ldu_init(dev_priv, 1);
	536	vmw_ldu_init(dev_priv, 2);
	537	vmw_ldu_init(dev_priv, 3);
	538	vmw_ldu_init(dev_priv, 4);
	539	vmw_ldu_init(dev_priv, 5);
	540	vmw_ldu_init(dev_priv, 6);
	541	vmw_ldu_init(dev_priv, 7);
	542	}
fb1d9738 JB	543
	544	return 0;
	545	}
	546
	547	int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
	548	{
	549	if (!dev_priv->ldu_priv)
	550	return -ENOSYS;
	551
	552	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
	553
	554	kfree(dev_priv->ldu_priv);
	555
	556	return 0;
	557	}