vmwgfx_kms.c 55.6 KB
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/**************************************************************************
 *
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Sinclair Yeh 已提交
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 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
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 * 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"

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/* Might need a hrtimer here? */
#define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)

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void vmw_du_cleanup(struct vmw_display_unit *du)
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{
	if (du->cursor_surface)
		vmw_surface_unreference(&du->cursor_surface);
	if (du->cursor_dmabuf)
		vmw_dmabuf_unreference(&du->cursor_dmabuf);
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	drm_connector_unregister(&du->connector);
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	drm_crtc_cleanup(&du->crtc);
	drm_encoder_cleanup(&du->encoder);
	drm_connector_cleanup(&du->connector);
}

/*
 * Display Unit Cursor functions
 */

int vmw_cursor_update_image(struct vmw_private *dev_priv,
			    u32 *image, u32 width, u32 height,
			    u32 hotspotX, u32 hotspotY)
{
	struct {
		u32 cmd;
		SVGAFifoCmdDefineAlphaCursor cursor;
	} *cmd;
	u32 image_size = width * height * 4;
	u32 cmd_size = sizeof(*cmd) + image_size;

	if (!image)
		return -EINVAL;

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

	memset(cmd, 0, sizeof(*cmd));

	memcpy(&cmd[1], image, image_size);

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	cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
	cmd->cursor.id = 0;
	cmd->cursor.width = width;
	cmd->cursor.height = height;
	cmd->cursor.hotspotX = hotspotX;
	cmd->cursor.hotspotY = hotspotY;
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	vmw_fifo_commit_flush(dev_priv, cmd_size);
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	return 0;
}

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int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
			     struct vmw_dma_buffer *dmabuf,
			     u32 width, u32 height,
			     u32 hotspotX, u32 hotspotY)
{
	struct ttm_bo_kmap_obj map;
	unsigned long kmap_offset;
	unsigned long kmap_num;
	void *virtual;
	bool dummy;
	int ret;

	kmap_offset = 0;
	kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;

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	ret = ttm_bo_reserve(&dmabuf->base, true, false, false, NULL);
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	if (unlikely(ret != 0)) {
		DRM_ERROR("reserve failed\n");
		return -EINVAL;
	}

	ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
	if (unlikely(ret != 0))
		goto err_unreserve;

	virtual = ttm_kmap_obj_virtual(&map, &dummy);
	ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
				      hotspotX, hotspotY);

	ttm_bo_kunmap(&map);
err_unreserve:
	ttm_bo_unreserve(&dmabuf->base);

	return ret;
}


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void vmw_cursor_update_position(struct vmw_private *dev_priv,
				bool show, int x, int y)
{
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	u32 *fifo_mem = dev_priv->mmio_virt;
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	uint32_t count;

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	vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
	vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
	vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
	count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
	vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
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}

int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
			   uint32_t handle, uint32_t width, uint32_t height)
{
	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
	struct vmw_surface *surface = NULL;
	struct vmw_dma_buffer *dmabuf = NULL;
	int ret;

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	/*
	 * FIXME: Unclear whether there's any global state touched by the
	 * cursor_set function, especially vmw_cursor_update_position looks
	 * suspicious. For now take the easy route and reacquire all locks. We
	 * can do this since the caller in the drm core doesn't check anything
	 * which is protected by any looks.
	 */
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	drm_modeset_unlock_crtc(crtc);
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	drm_modeset_lock_all(dev_priv->dev);

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	/* A lot of the code assumes this */
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	if (handle && (width != 64 || height != 64)) {
		ret = -EINVAL;
		goto out;
	}
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	if (handle) {
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		struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;

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		ret = vmw_user_lookup_handle(dev_priv, tfile,
					     handle, &surface, &dmabuf);
		if (ret) {
			DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
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			ret = -EINVAL;
			goto out;
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		}
	}

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	/* need to do this before taking down old image */
	if (surface && !surface->snooper.image) {
		DRM_ERROR("surface not suitable for cursor\n");
		vmw_surface_unreference(&surface);
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		ret = -EINVAL;
		goto out;
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	}

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	/* takedown old cursor */
	if (du->cursor_surface) {
		du->cursor_surface->snooper.crtc = NULL;
		vmw_surface_unreference(&du->cursor_surface);
	}
	if (du->cursor_dmabuf)
		vmw_dmabuf_unreference(&du->cursor_dmabuf);

	/* setup new image */
	if (surface) {
		/* vmw_user_surface_lookup takes one reference */
		du->cursor_surface = surface;

		du->cursor_surface->snooper.crtc = crtc;
		du->cursor_age = du->cursor_surface->snooper.age;
		vmw_cursor_update_image(dev_priv, surface->snooper.image,
					64, 64, du->hotspot_x, du->hotspot_y);
	} else if (dmabuf) {
		/* vmw_user_surface_lookup takes one reference */
		du->cursor_dmabuf = dmabuf;

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		ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
					       du->hotspot_x, du->hotspot_y);
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	} else {
		vmw_cursor_update_position(dev_priv, false, 0, 0);
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		ret = 0;
		goto out;
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	}

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	vmw_cursor_update_position(dev_priv, true,
				   du->cursor_x + du->hotspot_x,
				   du->cursor_y + du->hotspot_y);
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	ret = 0;
out:
	drm_modeset_unlock_all(dev_priv->dev);
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	drm_modeset_lock_crtc(crtc, crtc->cursor);
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	return ret;
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}

int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
	bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;

	du->cursor_x = x + crtc->x;
	du->cursor_y = y + crtc->y;

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	/*
	 * FIXME: Unclear whether there's any global state touched by the
	 * cursor_set function, especially vmw_cursor_update_position looks
	 * suspicious. For now take the easy route and reacquire all locks. We
	 * can do this since the caller in the drm core doesn't check anything
	 * which is protected by any looks.
	 */
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	drm_modeset_unlock_crtc(crtc);
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	drm_modeset_lock_all(dev_priv->dev);

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	vmw_cursor_update_position(dev_priv, shown,
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				   du->cursor_x + du->hotspot_x,
				   du->cursor_y + du->hotspot_y);
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	drm_modeset_unlock_all(dev_priv->dev);
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	drm_modeset_lock_crtc(crtc, crtc->cursor);
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	return 0;
}

void vmw_kms_cursor_snoop(struct vmw_surface *srf,
			  struct ttm_object_file *tfile,
			  struct ttm_buffer_object *bo,
			  SVGA3dCmdHeader *header)
{
	struct ttm_bo_kmap_obj map;
	unsigned long kmap_offset;
	unsigned long kmap_num;
	SVGA3dCopyBox *box;
	unsigned box_count;
	void *virtual;
	bool dummy;
	struct vmw_dma_cmd {
		SVGA3dCmdHeader header;
		SVGA3dCmdSurfaceDMA dma;
	} *cmd;
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	int i, ret;
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	cmd = container_of(header, struct vmw_dma_cmd, header);

	/* No snooper installed */
	if (!srf->snooper.image)
		return;

	if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
		DRM_ERROR("face and mipmap for cursors should never != 0\n");
		return;
	}

	if (cmd->header.size < 64) {
		DRM_ERROR("at least one full copy box must be given\n");
		return;
	}

	box = (SVGA3dCopyBox *)&cmd[1];
	box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
			sizeof(SVGA3dCopyBox);

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	if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
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	    box->x != 0    || box->y != 0    || box->z != 0    ||
	    box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
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	    box->d != 1    || box_count != 1) {
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		/* TODO handle none page aligned offsets */
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		/* TODO handle more dst & src != 0 */
		/* TODO handle more then one copy */
		DRM_ERROR("Cant snoop dma request for cursor!\n");
		DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
			  box->srcx, box->srcy, box->srcz,
			  box->x, box->y, box->z,
			  box->w, box->h, box->d, box_count,
			  cmd->dma.guest.ptr.offset);
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		return;
	}

	kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
	kmap_num = (64*64*4) >> PAGE_SHIFT;

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	ret = ttm_bo_reserve(bo, true, false, false, NULL);
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	if (unlikely(ret != 0)) {
		DRM_ERROR("reserve failed\n");
		return;
	}

	ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
	if (unlikely(ret != 0))
		goto err_unreserve;

	virtual = ttm_kmap_obj_virtual(&map, &dummy);

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	if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
		memcpy(srf->snooper.image, virtual, 64*64*4);
	} else {
		/* Image is unsigned pointer. */
		for (i = 0; i < box->h; i++)
			memcpy(srf->snooper.image + i * 64,
			       virtual + i * cmd->dma.guest.pitch,
			       box->w * 4);
	}

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	srf->snooper.age++;

	ttm_bo_kunmap(&map);
err_unreserve:
	ttm_bo_unreserve(bo);
}

void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_display_unit *du;
	struct drm_crtc *crtc;

	mutex_lock(&dev->mode_config.mutex);

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		du = vmw_crtc_to_du(crtc);
		if (!du->cursor_surface ||
		    du->cursor_age == du->cursor_surface->snooper.age)
			continue;

		du->cursor_age = du->cursor_surface->snooper.age;
		vmw_cursor_update_image(dev_priv,
					du->cursor_surface->snooper.image,
					64, 64, du->hotspot_x, du->hotspot_y);
	}

	mutex_unlock(&dev->mode_config.mutex);
}

/*
 * Generic framebuffer code
 */

/*
 * Surface framebuffer code
 */

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static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
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{
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	struct vmw_framebuffer_surface *vfbs =
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		vmw_framebuffer_to_vfbs(framebuffer);
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	drm_framebuffer_cleanup(framebuffer);
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	vmw_surface_unreference(&vfbs->surface);
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	if (vfbs->base.user_obj)
		ttm_base_object_unref(&vfbs->base.user_obj);
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	kfree(vfbs);
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}

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static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
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				  struct drm_file *file_priv,
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				  unsigned flags, unsigned color,
				  struct drm_clip_rect *clips,
				  unsigned num_clips)
{
	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
	struct vmw_framebuffer_surface *vfbs =
		vmw_framebuffer_to_vfbs(framebuffer);
	struct drm_clip_rect norect;
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	int ret, inc = 1;
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	/* Legacy Display Unit does not support 3D */
	if (dev_priv->active_display_unit == vmw_du_legacy)
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		return -EINVAL;

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	drm_modeset_lock_all(dev_priv->dev);

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	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
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	if (unlikely(ret != 0)) {
		drm_modeset_unlock_all(dev_priv->dev);
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		return ret;
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	}
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	if (!num_clips) {
		num_clips = 1;
		clips = &norect;
		norect.x1 = norect.y1 = 0;
		norect.x2 = framebuffer->width;
		norect.y2 = framebuffer->height;
	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
		num_clips /= 2;
		inc = 2; /* skip source rects */
	}

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	if (dev_priv->active_display_unit == vmw_du_screen_object)
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		ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
						   clips, NULL, NULL, 0, 0,
						   num_clips, inc, NULL);
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	else
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		ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
						 clips, NULL, NULL, 0, 0,
						 num_clips, inc, NULL);
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	vmw_fifo_flush(dev_priv, false);
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	ttm_read_unlock(&dev_priv->reservation_sem);
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	drm_modeset_unlock_all(dev_priv->dev);

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	return 0;
}

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/**
 * vmw_kms_readback - Perform a readback from the screen system to
 * a dma-buffer backed framebuffer.
 *
 * @dev_priv: Pointer to the device private structure.
 * @file_priv: Pointer to a struct drm_file identifying the caller.
 * Must be set to NULL if @user_fence_rep is NULL.
 * @vfb: Pointer to the dma-buffer backed framebuffer.
 * @user_fence_rep: User-space provided structure for fence information.
 * Must be set to non-NULL if @file_priv is non-NULL.
 * @vclips: Array of clip rects.
 * @num_clips: Number of clip rects in @vclips.
 *
 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 * interrupted.
 */
int vmw_kms_readback(struct vmw_private *dev_priv,
		     struct drm_file *file_priv,
		     struct vmw_framebuffer *vfb,
		     struct drm_vmw_fence_rep __user *user_fence_rep,
		     struct drm_vmw_rect *vclips,
		     uint32_t num_clips)
{
	switch (dev_priv->active_display_unit) {
	case vmw_du_screen_object:
		return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
					    user_fence_rep, vclips, num_clips);
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	case vmw_du_screen_target:
		return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
					user_fence_rep, NULL, vclips, num_clips,
					1, false, true);
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	default:
		WARN_ONCE(true,
			  "Readback called with invalid display system.\n");
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}
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	return -ENOSYS;
}


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static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
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	.destroy = vmw_framebuffer_surface_destroy,
	.dirty = vmw_framebuffer_surface_dirty,
};

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static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
					   struct vmw_surface *surface,
					   struct vmw_framebuffer **out,
					   const struct drm_mode_fb_cmd
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					   *mode_cmd,
					   bool is_dmabuf_proxy)
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{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_framebuffer_surface *vfbs;
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	enum SVGA3dSurfaceFormat format;
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	int ret;

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	/* 3D is only supported on HWv8 and newer hosts */
	if (dev_priv->active_display_unit == vmw_du_legacy)
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		return -ENOSYS;

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	/*
	 * Sanity checks.
	 */

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	/* Surface must be marked as a scanout. */
	if (unlikely(!surface->scanout))
		return -EINVAL;

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	if (unlikely(surface->mip_levels[0] != 1 ||
		     surface->num_sizes != 1 ||
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		     surface->base_size.width < mode_cmd->width ||
		     surface->base_size.height < mode_cmd->height ||
		     surface->base_size.depth != 1)) {
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		DRM_ERROR("Incompatible surface dimensions "
			  "for requested mode.\n");
		return -EINVAL;
	}

	switch (mode_cmd->depth) {
	case 32:
		format = SVGA3D_A8R8G8B8;
		break;
	case 24:
		format = SVGA3D_X8R8G8B8;
		break;
	case 16:
		format = SVGA3D_R5G6B5;
		break;
	case 15:
		format = SVGA3D_A1R5G5B5;
		break;
	default:
		DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
		return -EINVAL;
	}

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	/*
	 * For DX, surface format validation is done when surface->scanout
	 * is set.
	 */
	if (!dev_priv->has_dx && format != surface->format) {
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		DRM_ERROR("Invalid surface format for requested mode.\n");
		return -EINVAL;
	}

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	vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
	if (!vfbs) {
		ret = -ENOMEM;
		goto out_err1;
	}

	/* XXX get the first 3 from the surface info */
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	vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
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	vfbs->base.base.pitches[0] = mode_cmd->pitch;
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	vfbs->base.base.depth = mode_cmd->depth;
	vfbs->base.base.width = mode_cmd->width;
	vfbs->base.base.height = mode_cmd->height;
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	vfbs->surface = vmw_surface_reference(surface);
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	vfbs->base.user_handle = mode_cmd->handle;
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	vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
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	*out = &vfbs->base;

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	ret = drm_framebuffer_init(dev, &vfbs->base.base,
				   &vmw_framebuffer_surface_funcs);
	if (ret)
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		goto out_err2;
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	return 0;

out_err2:
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	vmw_surface_unreference(&surface);
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	kfree(vfbs);
out_err1:
	return ret;
}

/*
 * Dmabuf framebuffer code
 */

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static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
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{
	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(framebuffer);

	drm_framebuffer_cleanup(framebuffer);
	vmw_dmabuf_unreference(&vfbd->buffer);
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	if (vfbd->base.user_obj)
		ttm_base_object_unref(&vfbd->base.user_obj);
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	kfree(vfbd);
}

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static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
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				 struct drm_file *file_priv,
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				 unsigned flags, unsigned color,
				 struct drm_clip_rect *clips,
				 unsigned num_clips)
{
	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
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	struct vmw_framebuffer_dmabuf *vfbd =
		vmw_framebuffer_to_vfbd(framebuffer);
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	struct drm_clip_rect norect;
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	int ret, increment = 1;
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	drm_modeset_lock_all(dev_priv->dev);

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	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
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	if (unlikely(ret != 0)) {
		drm_modeset_unlock_all(dev_priv->dev);
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		return ret;
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	}
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609
	if (!num_clips) {
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		num_clips = 1;
		clips = &norect;
		norect.x1 = norect.y1 = 0;
		norect.x2 = framebuffer->width;
		norect.y2 = framebuffer->height;
	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
		num_clips /= 2;
		increment = 2;
	}

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	switch (dev_priv->active_display_unit) {
	case vmw_du_screen_target:
		ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
				       clips, NULL, num_clips, increment,
				       true, true);
		break;
	case vmw_du_screen_object:
627
		ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
628
						  clips, num_clips, increment,
629
						  true,
630
						  NULL);
631
		break;
632 633 634 635
	case vmw_du_legacy:
		ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
						  clips, num_clips, increment);
		break;
636
	default:
637 638
		ret = -EINVAL;
		WARN_ONCE(true, "Dirty called with invalid display system.\n");
639
		break;
640
	}
641

642
	vmw_fifo_flush(dev_priv, false);
643
	ttm_read_unlock(&dev_priv->reservation_sem);
644 645 646

	drm_modeset_unlock_all(dev_priv->dev);

647
	return ret;
648 649
}

650
static const struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
651 652 653 654
	.destroy = vmw_framebuffer_dmabuf_destroy,
	.dirty = vmw_framebuffer_dmabuf_dirty,
};

655 656 657
/**
 * Pin the dmabuffer to the start of vram.
 */
658
static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
659 660
{
	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
661
	struct vmw_dma_buffer *buf;
662 663
	int ret;

664 665
	buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
		vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
666

667 668
	if (!buf)
		return 0;
669

670 671 672 673 674 675 676 677 678 679 680
	switch (dev_priv->active_display_unit) {
	case vmw_du_legacy:
		vmw_overlay_pause_all(dev_priv);
		ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
		vmw_overlay_resume_all(dev_priv);
		break;
	case vmw_du_screen_object:
	case vmw_du_screen_target:
		if (vfb->dmabuf)
			return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
							     false);
681

682 683 684 685 686
		return vmw_dmabuf_pin_in_placement(dev_priv, buf,
						   &vmw_mob_placement, false);
	default:
		return -EINVAL;
	}
687

688
	return ret;
689 690
}

691
static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
692 693
{
	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
694
	struct vmw_dma_buffer *buf;
695

696 697
	buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
		vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
698

699
	if (WARN_ON(!buf))
700 701
		return 0;

702
	return vmw_dmabuf_unpin(dev_priv, buf, false);
703 704
}

705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720
/**
 * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
 *
 * @dev: DRM device
 * @mode_cmd: parameters for the new surface
 * @dmabuf_mob: MOB backing the DMA buf
 * @srf_out: newly created surface
 *
 * When the content FB is a DMA buf, we create a surface as a proxy to the
 * same buffer.  This way we can do a surface copy rather than a surface DMA.
 * This is a more efficient approach
 *
 * RETURNS:
 * 0 on success, error code otherwise
 */
static int vmw_create_dmabuf_proxy(struct drm_device *dev,
721
				   const struct drm_mode_fb_cmd *mode_cmd,
722 723 724 725 726
				   struct vmw_dma_buffer *dmabuf_mob,
				   struct vmw_surface **srf_out)
{
	uint32_t format;
	struct drm_vmw_size content_base_size;
727
	struct vmw_resource *res;
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760
	int ret;

	switch (mode_cmd->depth) {
	case 32:
	case 24:
		format = SVGA3D_X8R8G8B8;
		break;

	case 16:
	case 15:
		format = SVGA3D_R5G6B5;
		break;

	case 8:
		format = SVGA3D_P8;
		break;

	default:
		DRM_ERROR("Invalid framebuffer format %d\n", mode_cmd->depth);
		return -EINVAL;
	}

	content_base_size.width  = mode_cmd->width;
	content_base_size.height = mode_cmd->height;
	content_base_size.depth  = 1;

	ret = vmw_surface_gb_priv_define(dev,
			0, /* kernel visible only */
			0, /* flags */
			format,
			true, /* can be a scanout buffer */
			1, /* num of mip levels */
			0,
761
			0,
762 763 764 765 766
			content_base_size,
			srf_out);
	if (ret) {
		DRM_ERROR("Failed to allocate proxy content buffer\n");
		return ret;
767 768
	}

769
	res = &(*srf_out)->res;
770

771 772 773 774 775 776
	/* Reserve and switch the backing mob. */
	mutex_lock(&res->dev_priv->cmdbuf_mutex);
	(void) vmw_resource_reserve(res, false, true);
	vmw_dmabuf_unreference(&res->backup);
	res->backup = vmw_dmabuf_reference(dmabuf_mob);
	res->backup_offset = 0;
777
	vmw_resource_unreserve(res, false, NULL, 0);
778
	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
779

780
	return 0;
781 782
}

783 784


785 786 787 788 789
static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
					  struct vmw_dma_buffer *dmabuf,
					  struct vmw_framebuffer **out,
					  const struct drm_mode_fb_cmd
					  *mode_cmd)
790 791 792 793

{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_framebuffer_dmabuf *vfbd;
794
	unsigned int requested_size;
795 796
	int ret;

797 798 799 800 801 802 803
	requested_size = mode_cmd->height * mode_cmd->pitch;
	if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
		DRM_ERROR("Screen buffer object size is too small "
			  "for requested mode.\n");
		return -EINVAL;
	}

804
	/* Limited framebuffer color depth support for screen objects */
805
	if (dev_priv->active_display_unit == vmw_du_screen_object) {
806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830
		switch (mode_cmd->depth) {
		case 32:
		case 24:
			/* Only support 32 bpp for 32 and 24 depth fbs */
			if (mode_cmd->bpp == 32)
				break;

			DRM_ERROR("Invalid color depth/bbp: %d %d\n",
				  mode_cmd->depth, mode_cmd->bpp);
			return -EINVAL;
		case 16:
		case 15:
			/* Only support 16 bpp for 16 and 15 depth fbs */
			if (mode_cmd->bpp == 16)
				break;

			DRM_ERROR("Invalid color depth/bbp: %d %d\n",
				  mode_cmd->depth, mode_cmd->bpp);
			return -EINVAL;
		default:
			DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
			return -EINVAL;
		}
	}

831 832 833 834 835 836
	vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
	if (!vfbd) {
		ret = -ENOMEM;
		goto out_err1;
	}

837
	vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
838
	vfbd->base.base.pitches[0] = mode_cmd->pitch;
839 840 841
	vfbd->base.base.depth = mode_cmd->depth;
	vfbd->base.base.width = mode_cmd->width;
	vfbd->base.base.height = mode_cmd->height;
842
	vfbd->base.dmabuf = true;
843
	vfbd->buffer = vmw_dmabuf_reference(dmabuf);
844
	vfbd->base.user_handle = mode_cmd->handle;
845 846
	*out = &vfbd->base;

847 848 849
	ret = drm_framebuffer_init(dev, &vfbd->base.base,
				   &vmw_framebuffer_dmabuf_funcs);
	if (ret)
850
		goto out_err2;
851

852 853 854
	return 0;

out_err2:
855
	vmw_dmabuf_unreference(&dmabuf);
856 857 858 859 860
	kfree(vfbd);
out_err1:
	return ret;
}

861 862 863 864 865 866 867 868 869 870 871
/**
 * vmw_kms_new_framebuffer - Create a new framebuffer.
 *
 * @dev_priv: Pointer to device private struct.
 * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
 * Either @dmabuf or @surface must be NULL.
 * @surface: Pointer to a surface to wrap the kms framebuffer around.
 * Either @dmabuf or @surface must be NULL.
 * @only_2d: No presents will occur to this dma buffer based framebuffer. This
 * Helps the code to do some important optimizations.
 * @mode_cmd: Frame-buffer metadata.
872
 */
873 874 875 876 877 878
struct vmw_framebuffer *
vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
			struct vmw_dma_buffer *dmabuf,
			struct vmw_surface *surface,
			bool only_2d,
			const struct drm_mode_fb_cmd *mode_cmd)
879 880
{
	struct vmw_framebuffer *vfb = NULL;
881
	bool is_dmabuf_proxy = false;
882 883
	int ret;

884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
	/*
	 * We cannot use the SurfaceDMA command in an non-accelerated VM,
	 * therefore, wrap the DMA buf in a surface so we can use the
	 * SurfaceCopy command.
	 */
	if (dmabuf && only_2d &&
	    dev_priv->active_display_unit == vmw_du_screen_target) {
		ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
					      dmabuf, &surface);
		if (ret)
			return ERR_PTR(ret);

		is_dmabuf_proxy = true;
	}

	/* Create the new framebuffer depending one what we have */
900
	if (surface) {
901 902 903
		ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
						      mode_cmd,
						      is_dmabuf_proxy);
904 905 906 907 908 909 910 911

		/*
		 * vmw_create_dmabuf_proxy() adds a reference that is no longer
		 * needed
		 */
		if (is_dmabuf_proxy)
			vmw_surface_unreference(&surface);
	} else if (dmabuf) {
912 913
		ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
						     mode_cmd);
914
	} else {
915
		BUG();
916
	}
917 918 919 920 921 922 923 924 925 926

	if (ret)
		return ERR_PTR(ret);

	vfb->pin = vmw_framebuffer_pin;
	vfb->unpin = vmw_framebuffer_unpin;

	return vfb;
}

927 928 929 930 931 932
/*
 * Generic Kernel modesetting functions
 */

static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
						 struct drm_file *file_priv,
933
						 const struct drm_mode_fb_cmd2 *mode_cmd2)
934 935 936 937 938 939
{
	struct vmw_private *dev_priv = vmw_priv(dev);
	struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
	struct vmw_framebuffer *vfb = NULL;
	struct vmw_surface *surface = NULL;
	struct vmw_dma_buffer *bo = NULL;
940
	struct ttm_base_object *user_obj;
941
	struct drm_mode_fb_cmd mode_cmd;
942 943
	int ret;

944 945 946 947
	mode_cmd.width = mode_cmd2->width;
	mode_cmd.height = mode_cmd2->height;
	mode_cmd.pitch = mode_cmd2->pitches[0];
	mode_cmd.handle = mode_cmd2->handles[0];
948
	drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
949 950
				    &mode_cmd.bpp);

951 952 953 954 955 956
	/**
	 * This code should be conditioned on Screen Objects not being used.
	 * If screen objects are used, we can allocate a GMR to hold the
	 * requested framebuffer.
	 */

957
	if (!vmw_kms_validate_mode_vram(dev_priv,
958 959
					mode_cmd.pitch,
					mode_cmd.height)) {
960
		DRM_ERROR("Requested mode exceed bounding box limit.\n");
961
		return ERR_PTR(-ENOMEM);
962 963
	}

964 965 966 967 968 969 970 971 972
	/*
	 * Take a reference on the user object of the resource
	 * backing the kms fb. This ensures that user-space handle
	 * lookups on that resource will always work as long as
	 * it's registered with a kms framebuffer. This is important,
	 * since vmw_execbuf_process identifies resources in the
	 * command stream using user-space handles.
	 */

973
	user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
974 975 976 977 978
	if (unlikely(user_obj == NULL)) {
		DRM_ERROR("Could not locate requested kms frame buffer.\n");
		return ERR_PTR(-ENOENT);
	}

979 980 981 982
	/**
	 * End conditioned code.
	 */

983 984
	/* returns either a dmabuf or surface */
	ret = vmw_user_lookup_handle(dev_priv, tfile,
985
				     mode_cmd.handle,
986
				     &surface, &bo);
987
	if (ret)
988 989
		goto err_out;

990 991 992 993 994 995 996
	vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
				      !(dev_priv->capabilities & SVGA_CAP_3D),
				      &mode_cmd);
	if (IS_ERR(vfb)) {
		ret = PTR_ERR(vfb);
		goto err_out;
 	}
997 998 999 1000 1001 1002 1003

err_out:
	/* vmw_user_lookup_handle takes one ref so does new_fb */
	if (bo)
		vmw_dmabuf_unreference(&bo);
	if (surface)
		vmw_surface_unreference(&surface);
1004 1005 1006

	if (ret) {
		DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1007
		ttm_base_object_unref(&user_obj);
1008
		return ERR_PTR(ret);
1009 1010
	} else
		vfb->user_obj = user_obj;
1011 1012 1013 1014

	return &vfb->base;
}

1015
static const struct drm_mode_config_funcs vmw_kms_funcs = {
1016 1017 1018
	.fb_create = vmw_kms_fb_create,
};

1019 1020 1021 1022 1023 1024 1025 1026
static int vmw_kms_generic_present(struct vmw_private *dev_priv,
				   struct drm_file *file_priv,
				   struct vmw_framebuffer *vfb,
				   struct vmw_surface *surface,
				   uint32_t sid,
				   int32_t destX, int32_t destY,
				   struct drm_vmw_rect *clips,
				   uint32_t num_clips)
1027
{
1028 1029 1030
	return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
					    &surface->res, destX, destY,
					    num_clips, 1, NULL);
1031 1032
}

1033

1034 1035 1036 1037 1038 1039 1040 1041 1042
int vmw_kms_present(struct vmw_private *dev_priv,
		    struct drm_file *file_priv,
		    struct vmw_framebuffer *vfb,
		    struct vmw_surface *surface,
		    uint32_t sid,
		    int32_t destX, int32_t destY,
		    struct drm_vmw_rect *clips,
		    uint32_t num_clips)
{
1043
	int ret;
1044

1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060
	switch (dev_priv->active_display_unit) {
	case vmw_du_screen_target:
		ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
						 &surface->res, destX, destY,
						 num_clips, 1, NULL);
		break;
	case vmw_du_screen_object:
		ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
					      sid, destX, destY, clips,
					      num_clips);
		break;
	default:
		WARN_ONCE(true,
			  "Present called with invalid display system.\n");
		ret = -ENOSYS;
		break;
1061
	}
1062 1063
	if (ret)
		return ret;
1064

1065
	vmw_fifo_flush(dev_priv, false);
1066

1067
	return 0;
1068 1069
}

1070 1071 1072 1073 1074 1075 1076
int vmw_kms_init(struct vmw_private *dev_priv)
{
	struct drm_device *dev = dev_priv->dev;
	int ret;

	drm_mode_config_init(dev);
	dev->mode_config.funcs = &vmw_kms_funcs;
1077 1078
	dev->mode_config.min_width = 1;
	dev->mode_config.min_height = 1;
1079 1080
	dev->mode_config.max_width = dev_priv->texture_max_width;
	dev->mode_config.max_height = dev_priv->texture_max_height;
1081

1082 1083 1084 1085 1086 1087
	ret = vmw_kms_stdu_init_display(dev_priv);
	if (ret) {
		ret = vmw_kms_sou_init_display(dev_priv);
		if (ret) /* Fallback */
			ret = vmw_kms_ldu_init_display(dev_priv);
	}
1088

1089
	return ret;
1090 1091 1092 1093
}

int vmw_kms_close(struct vmw_private *dev_priv)
{
1094 1095
	int ret;

1096 1097 1098 1099 1100 1101
	/*
	 * Docs says we should take the lock before calling this function
	 * but since it destroys encoders and our destructor calls
	 * drm_encoder_cleanup which takes the lock we deadlock.
	 */
	drm_mode_config_cleanup(dev_priv->dev);
1102 1103
	if (dev_priv->active_display_unit == vmw_du_screen_object)
		ret = vmw_kms_sou_close_display(dev_priv);
1104 1105
	else if (dev_priv->active_display_unit == vmw_du_screen_target)
		ret = vmw_kms_stdu_close_display(dev_priv);
1106
	else
1107 1108 1109
		ret = vmw_kms_ldu_close_display(dev_priv);

	return ret;
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133
}

int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{
	struct drm_vmw_cursor_bypass_arg *arg = data;
	struct vmw_display_unit *du;
	struct drm_crtc *crtc;
	int ret = 0;


	mutex_lock(&dev->mode_config.mutex);
	if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {

		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
			du = vmw_crtc_to_du(crtc);
			du->hotspot_x = arg->xhot;
			du->hotspot_y = arg->yhot;
		}

		mutex_unlock(&dev->mode_config.mutex);
		return 0;
	}

R
Rob Clark 已提交
1134 1135
	crtc = drm_crtc_find(dev, arg->crtc_id);
	if (!crtc) {
1136
		ret = -ENOENT;
1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
		goto out;
	}

	du = vmw_crtc_to_du(crtc);

	du->hotspot_x = arg->xhot;
	du->hotspot_y = arg->yhot;

out:
	mutex_unlock(&dev->mode_config.mutex);

	return ret;
}

1151
int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1152
			unsigned width, unsigned height, unsigned pitch,
M
Michel Dänzer 已提交
1153
			unsigned bpp, unsigned depth)
1154
{
1155 1156 1157
	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
	else if (vmw_fifo_have_pitchlock(vmw_priv))
1158 1159
		vmw_mmio_write(pitch, vmw_priv->mmio_virt +
			       SVGA_FIFO_PITCHLOCK);
1160 1161
	vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
	vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
M
Michel Dänzer 已提交
1162
	vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1163 1164 1165 1166 1167 1168 1169 1170

	if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
		DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
			  depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
		return -EINVAL;
	}

	return 0;
1171
}
1172

1173 1174
int vmw_kms_save_vga(struct vmw_private *vmw_priv)
{
1175 1176 1177
	struct vmw_vga_topology_state *save;
	uint32_t i;

1178 1179
	vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
	vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1180
	vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1181 1182
	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
		vmw_priv->vga_pitchlock =
1183
		  vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1184
	else if (vmw_fifo_have_pitchlock(vmw_priv))
1185 1186
		vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
							SVGA_FIFO_PITCHLOCK);
1187 1188 1189

	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
		return 0;
1190

1191 1192 1193
	vmw_priv->num_displays = vmw_read(vmw_priv,
					  SVGA_REG_NUM_GUEST_DISPLAYS);

1194 1195 1196
	if (vmw_priv->num_displays == 0)
		vmw_priv->num_displays = 1;

1197 1198 1199 1200 1201 1202 1203 1204 1205
	for (i = 0; i < vmw_priv->num_displays; ++i) {
		save = &vmw_priv->vga_save[i];
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
		save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
		save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
		save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
		save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
		save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216
		if (i == 0 && vmw_priv->num_displays == 1 &&
		    save->width == 0 && save->height == 0) {

			/*
			 * It should be fairly safe to assume that these
			 * values are uninitialized.
			 */

			save->width = vmw_priv->vga_width - save->pos_x;
			save->height = vmw_priv->vga_height - save->pos_y;
		}
1217
	}
1218

1219 1220 1221 1222 1223
	return 0;
}

int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
{
1224 1225 1226
	struct vmw_vga_topology_state *save;
	uint32_t i;

1227 1228
	vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
	vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1229
	vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1230 1231 1232 1233
	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
			  vmw_priv->vga_pitchlock);
	else if (vmw_fifo_have_pitchlock(vmw_priv))
1234 1235
		vmw_mmio_write(vmw_priv->vga_pitchlock,
			       vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1236

1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250
	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
		return 0;

	for (i = 0; i < vmw_priv->num_displays; ++i) {
		save = &vmw_priv->vga_save[i];
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	}

1251 1252
	return 0;
}
1253

1254 1255 1256 1257
bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
				uint32_t pitch,
				uint32_t height)
{
1258 1259 1260
	return ((u64) pitch * (u64) height) < (u64)
		((dev_priv->active_display_unit == vmw_du_screen_target) ?
		 dev_priv->prim_bb_mem : dev_priv->vram_size);
1261 1262
}

J
Jakob Bornecrantz 已提交
1263 1264 1265 1266

/**
 * Function called by DRM code called with vbl_lock held.
 */
1267
u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1268 1269 1270
{
	return 0;
}
1271

J
Jakob Bornecrantz 已提交
1272 1273 1274
/**
 * Function called by DRM code called with vbl_lock held.
 */
1275
int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
J
Jakob Bornecrantz 已提交
1276 1277 1278 1279 1280 1281 1282
{
	return -ENOSYS;
}

/**
 * Function called by DRM code called with vbl_lock held.
 */
1283
void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
J
Jakob Bornecrantz 已提交
1284 1285 1286
{
}

1287 1288 1289 1290 1291

/*
 * Small shared kms functions.
 */

1292
static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1293 1294 1295 1296 1297 1298 1299 1300 1301
			 struct drm_vmw_rect *rects)
{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_display_unit *du;
	struct drm_connector *con;

	mutex_lock(&dev->mode_config.mutex);

#if 0
T
Thomas Hellstrom 已提交
1302 1303 1304 1305 1306 1307 1308 1309 1310
	{
		unsigned int i;

		DRM_INFO("%s: new layout ", __func__);
		for (i = 0; i < num; i++)
			DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
				 rects[i].w, rects[i].h);
		DRM_INFO("\n");
	}
1311 1312 1313 1314 1315 1316 1317 1318
#endif

	list_for_each_entry(con, &dev->mode_config.connector_list, head) {
		du = vmw_connector_to_du(con);
		if (num > du->unit) {
			du->pref_width = rects[du->unit].w;
			du->pref_height = rects[du->unit].h;
			du->pref_active = true;
1319 1320
			du->gui_x = rects[du->unit].x;
			du->gui_y = rects[du->unit].y;
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349
		} else {
			du->pref_width = 800;
			du->pref_height = 600;
			du->pref_active = false;
		}
		con->status = vmw_du_connector_detect(con, true);
	}

	mutex_unlock(&dev->mode_config.mutex);

	return 0;
}

void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
			   u16 *r, u16 *g, u16 *b,
			   uint32_t start, uint32_t size)
{
	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
	int i;

	for (i = 0; i < size; i++) {
		DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
			  r[i], g[i], b[i]);
		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
	}
}

1350
int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1351
{
1352
	return 0;
1353 1354 1355 1356 1357 1358 1359 1360
}

enum drm_connector_status
vmw_du_connector_detect(struct drm_connector *connector, bool force)
{
	uint32_t num_displays;
	struct drm_device *dev = connector->dev;
	struct vmw_private *dev_priv = vmw_priv(dev);
1361
	struct vmw_display_unit *du = vmw_connector_to_du(connector);
1362 1363 1364

	num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);

1365 1366
	return ((vmw_connector_to_du(connector)->unit < num_displays &&
		 du->pref_active) ?
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446
		connector_status_connected : connector_status_disconnected);
}

static struct drm_display_mode vmw_kms_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, 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) },
};

1447 1448 1449 1450 1451 1452 1453
/**
 * vmw_guess_mode_timing - Provide fake timings for a
 * 60Hz vrefresh mode.
 *
 * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
 * members filled in.
 */
1454
void vmw_guess_mode_timing(struct drm_display_mode *mode)
1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468
{
	mode->hsync_start = mode->hdisplay + 50;
	mode->hsync_end = mode->hsync_start + 50;
	mode->htotal = mode->hsync_end + 50;

	mode->vsync_start = mode->vdisplay + 50;
	mode->vsync_end = mode->vsync_start + 50;
	mode->vtotal = mode->vsync_end + 50;

	mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
	mode->vrefresh = drm_mode_vrefresh(mode);
}


1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
int vmw_du_connector_fill_modes(struct drm_connector *connector,
				uint32_t max_width, uint32_t max_height)
{
	struct vmw_display_unit *du = vmw_connector_to_du(connector);
	struct drm_device *dev = connector->dev;
	struct vmw_private *dev_priv = vmw_priv(dev);
	struct drm_display_mode *mode = NULL;
	struct drm_display_mode *bmode;
	struct drm_display_mode prefmode = { DRM_MODE("preferred",
		DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
	};
	int i;
1483 1484 1485 1486 1487 1488
	u32 assumed_bpp = 2;

	/*
	 * If using screen objects, then assume 32-bpp because that's what the
	 * SVGA device is assuming
	 */
1489
	if (dev_priv->active_display_unit == vmw_du_screen_object)
1490
		assumed_bpp = 4;
1491

1492 1493 1494 1495 1496
	if (dev_priv->active_display_unit == vmw_du_screen_target) {
		max_width  = min(max_width,  dev_priv->stdu_max_width);
		max_height = min(max_height, dev_priv->stdu_max_height);
	}

1497
	/* Add preferred mode */
1498 1499 1500 1501 1502 1503
	mode = drm_mode_duplicate(dev, &prefmode);
	if (!mode)
		return 0;
	mode->hdisplay = du->pref_width;
	mode->vdisplay = du->pref_height;
	vmw_guess_mode_timing(mode);
1504

1505 1506 1507 1508 1509 1510 1511 1512
	if (vmw_kms_validate_mode_vram(dev_priv,
					mode->hdisplay * assumed_bpp,
					mode->vdisplay)) {
		drm_mode_probed_add(connector, mode);
	} else {
		drm_mode_destroy(dev, mode);
		mode = NULL;
	}
1513

1514 1515 1516
	if (du->pref_mode) {
		list_del_init(&du->pref_mode->head);
		drm_mode_destroy(dev, du->pref_mode);
1517 1518
	}

1519 1520 1521
	/* mode might be null here, this is intended */
	du->pref_mode = mode;

1522 1523 1524 1525 1526 1527
	for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
		bmode = &vmw_kms_connector_builtin[i];
		if (bmode->hdisplay > max_width ||
		    bmode->vdisplay > max_height)
			continue;

1528 1529
		if (!vmw_kms_validate_mode_vram(dev_priv,
						bmode->hdisplay * assumed_bpp,
1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540
						bmode->vdisplay))
			continue;

		mode = drm_mode_duplicate(dev, bmode);
		if (!mode)
			return 0;
		mode->vrefresh = drm_mode_vrefresh(mode);

		drm_mode_probed_add(connector, mode);
	}

1541
	drm_mode_connector_list_update(connector);
1542 1543
	/* Move the prefered mode first, help apps pick the right mode. */
	drm_mode_sort(&connector->modes);
1544 1545 1546 1547 1548 1549 1550 1551 1552 1553

	return 1;
}

int vmw_du_connector_set_property(struct drm_connector *connector,
				  struct drm_property *property,
				  uint64_t val)
{
	return 0;
}
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566


int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{
	struct vmw_private *dev_priv = vmw_priv(dev);
	struct drm_vmw_update_layout_arg *arg =
		(struct drm_vmw_update_layout_arg *)data;
	void __user *user_rects;
	struct drm_vmw_rect *rects;
	unsigned rects_size;
	int ret;
	int i;
1567
	u64 total_pixels = 0;
1568
	struct drm_mode_config *mode_config = &dev->mode_config;
1569
	struct drm_vmw_rect bounding_box = {0};
1570 1571 1572 1573

	if (!arg->num_outputs) {
		struct drm_vmw_rect def_rect = {0, 0, 800, 600};
		vmw_du_update_layout(dev_priv, 1, &def_rect);
1574
		return 0;
1575 1576 1577
	}

	rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1578 1579
	rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
			GFP_KERNEL);
1580 1581
	if (unlikely(!rects))
		return -ENOMEM;
1582 1583 1584 1585 1586 1587 1588 1589 1590 1591

	user_rects = (void __user *)(unsigned long)arg->rects;
	ret = copy_from_user(rects, user_rects, rects_size);
	if (unlikely(ret != 0)) {
		DRM_ERROR("Failed to get rects.\n");
		ret = -EFAULT;
		goto out_free;
	}

	for (i = 0; i < arg->num_outputs; ++i) {
1592 1593 1594 1595
		if (rects[i].x < 0 ||
		    rects[i].y < 0 ||
		    rects[i].x + rects[i].w > mode_config->max_width ||
		    rects[i].y + rects[i].h > mode_config->max_height) {
1596 1597 1598 1599
			DRM_ERROR("Invalid GUI layout.\n");
			ret = -EINVAL;
			goto out_free;
		}
1600 1601 1602 1603 1604 1605 1606 1607 1608 1609

		/*
		 * bounding_box.w and bunding_box.h are used as
		 * lower-right coordinates
		 */
		if (rects[i].x + rects[i].w > bounding_box.w)
			bounding_box.w = rects[i].x + rects[i].w;

		if (rects[i].y + rects[i].h > bounding_box.h)
			bounding_box.h = rects[i].y + rects[i].h;
1610 1611

		total_pixels += (u64) rects[i].w * (u64) rects[i].h;
1612 1613
	}

1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624
	if (dev_priv->active_display_unit == vmw_du_screen_target) {
		/*
		 * For Screen Targets, the limits for a toplogy are:
		 *	1. Bounding box (assuming 32bpp) must be < prim_bb_mem
		 *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
		 */
		u64 bb_mem    = bounding_box.w * bounding_box.h * 4;
		u64 pixel_mem = total_pixels * 4;

		if (bb_mem > dev_priv->prim_bb_mem) {
			DRM_ERROR("Topology is beyond supported limits.\n");
1625 1626 1627 1628
			ret = -EINVAL;
			goto out_free;
		}

1629 1630 1631 1632 1633
		if (pixel_mem > dev_priv->prim_bb_mem) {
			DRM_ERROR("Combined output size too large\n");
			ret = -EINVAL;
			goto out_free;
		}
1634 1635 1636 1637 1638 1639 1640 1641
	}

	vmw_du_update_layout(dev_priv, arg->num_outputs, rects);

out_free:
	kfree(rects);
	return ret;
}
1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697

/**
 * vmw_kms_helper_dirty - Helper to build commands and perform actions based
 * on a set of cliprects and a set of display units.
 *
 * @dev_priv: Pointer to a device private structure.
 * @framebuffer: Pointer to the framebuffer on which to perform the actions.
 * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
 * Cliprects are given in framebuffer coordinates.
 * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
 * be NULL. Cliprects are given in source coordinates.
 * @dest_x: X coordinate offset for the crtc / destination clip rects.
 * @dest_y: Y coordinate offset for the crtc / destination clip rects.
 * @num_clips: Number of cliprects in the @clips or @vclips array.
 * @increment: Integer with which to increment the clip counter when looping.
 * Used to skip a predetermined number of clip rects.
 * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
 */
int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
			 struct vmw_framebuffer *framebuffer,
			 const struct drm_clip_rect *clips,
			 const struct drm_vmw_rect *vclips,
			 s32 dest_x, s32 dest_y,
			 int num_clips,
			 int increment,
			 struct vmw_kms_dirty *dirty)
{
	struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
	struct drm_crtc *crtc;
	u32 num_units = 0;
	u32 i, k;

	dirty->dev_priv = dev_priv;

	list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
		if (crtc->primary->fb != &framebuffer->base)
			continue;
		units[num_units++] = vmw_crtc_to_du(crtc);
	}

	for (k = 0; k < num_units; k++) {
		struct vmw_display_unit *unit = units[k];
		s32 crtc_x = unit->crtc.x;
		s32 crtc_y = unit->crtc.y;
		s32 crtc_width = unit->crtc.mode.hdisplay;
		s32 crtc_height = unit->crtc.mode.vdisplay;
		const struct drm_clip_rect *clips_ptr = clips;
		const struct drm_vmw_rect *vclips_ptr = vclips;

		dirty->unit = unit;
		if (dirty->fifo_reserve_size > 0) {
			dirty->cmd = vmw_fifo_reserve(dev_priv,
						      dirty->fifo_reserve_size);
			if (!dirty->cmd) {
				DRM_ERROR("Couldn't reserve fifo space "
					  "for dirty blits.\n");
1698
				return -ENOMEM;
1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782
			}
			memset(dirty->cmd, 0, dirty->fifo_reserve_size);
		}
		dirty->num_hits = 0;
		for (i = 0; i < num_clips; i++, clips_ptr += increment,
		       vclips_ptr += increment) {
			s32 clip_left;
			s32 clip_top;

			/*
			 * Select clip array type. Note that integer type
			 * in @clips is unsigned short, whereas in @vclips
			 * it's 32-bit.
			 */
			if (clips) {
				dirty->fb_x = (s32) clips_ptr->x1;
				dirty->fb_y = (s32) clips_ptr->y1;
				dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
					crtc_x;
				dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
					crtc_y;
			} else {
				dirty->fb_x = vclips_ptr->x;
				dirty->fb_y = vclips_ptr->y;
				dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
					dest_x - crtc_x;
				dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
					dest_y - crtc_y;
			}

			dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
			dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;

			/* Skip this clip if it's outside the crtc region */
			if (dirty->unit_x1 >= crtc_width ||
			    dirty->unit_y1 >= crtc_height ||
			    dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
				continue;

			/* Clip right and bottom to crtc limits */
			dirty->unit_x2 = min_t(s32, dirty->unit_x2,
					       crtc_width);
			dirty->unit_y2 = min_t(s32, dirty->unit_y2,
					       crtc_height);

			/* Clip left and top to crtc limits */
			clip_left = min_t(s32, dirty->unit_x1, 0);
			clip_top = min_t(s32, dirty->unit_y1, 0);
			dirty->unit_x1 -= clip_left;
			dirty->unit_y1 -= clip_top;
			dirty->fb_x -= clip_left;
			dirty->fb_y -= clip_top;

			dirty->clip(dirty);
		}

		dirty->fifo_commit(dirty);
	}

	return 0;
}

/**
 * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
 * command submission.
 *
 * @dev_priv. Pointer to a device private structure.
 * @buf: The buffer object
 * @interruptible: Whether to perform waits as interruptible.
 * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
 * The buffer will be validated as a GMR. Already pinned buffers will not be
 * validated.
 *
 * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
 * interrupted by a signal.
 */
int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
				  struct vmw_dma_buffer *buf,
				  bool interruptible,
				  bool validate_as_mob)
{
	struct ttm_buffer_object *bo = &buf->base;
	int ret;

1783
	ttm_bo_reserve(bo, false, false, interruptible, NULL);
1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861
	ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
					 validate_as_mob);
	if (ret)
		ttm_bo_unreserve(bo);

	return ret;
}

/**
 * vmw_kms_helper_buffer_revert - Undo the actions of
 * vmw_kms_helper_buffer_prepare.
 *
 * @res: Pointer to the buffer object.
 *
 * Helper to be used if an error forces the caller to undo the actions of
 * vmw_kms_helper_buffer_prepare.
 */
void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
{
	if (buf)
		ttm_bo_unreserve(&buf->base);
}

/**
 * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
 * kms command submission.
 *
 * @dev_priv: Pointer to a device private structure.
 * @file_priv: Pointer to a struct drm_file representing the caller's
 * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
 * if non-NULL, @user_fence_rep must be non-NULL.
 * @buf: The buffer object.
 * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
 * ref-counted fence pointer is returned here.
 * @user_fence_rep: Optional pointer to a user-space provided struct
 * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
 * function copies fence data to user-space in a fail-safe manner.
 */
void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
				  struct drm_file *file_priv,
				  struct vmw_dma_buffer *buf,
				  struct vmw_fence_obj **out_fence,
				  struct drm_vmw_fence_rep __user *
				  user_fence_rep)
{
	struct vmw_fence_obj *fence;
	uint32_t handle;
	int ret;

	ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
					 file_priv ? &handle : NULL);
	if (buf)
		vmw_fence_single_bo(&buf->base, fence);
	if (file_priv)
		vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
					    ret, user_fence_rep, fence,
					    handle);
	if (out_fence)
		*out_fence = fence;
	else
		vmw_fence_obj_unreference(&fence);

	vmw_kms_helper_buffer_revert(buf);
}


/**
 * vmw_kms_helper_resource_revert - Undo the actions of
 * vmw_kms_helper_resource_prepare.
 *
 * @res: Pointer to the resource. Typically a surface.
 *
 * Helper to be used if an error forces the caller to undo the actions of
 * vmw_kms_helper_resource_prepare.
 */
void vmw_kms_helper_resource_revert(struct vmw_resource *res)
{
	vmw_kms_helper_buffer_revert(res->backup);
1862
	vmw_resource_unreserve(res, false, NULL, 0);
1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908
	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
}

/**
 * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
 * command submission.
 *
 * @res: Pointer to the resource. Typically a surface.
 * @interruptible: Whether to perform waits as interruptible.
 *
 * Reserves and validates also the backup buffer if a guest-backed resource.
 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 * interrupted by a signal.
 */
int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
				    bool interruptible)
{
	int ret = 0;

	if (interruptible)
		ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
	else
		mutex_lock(&res->dev_priv->cmdbuf_mutex);

	if (unlikely(ret != 0))
		return -ERESTARTSYS;

	ret = vmw_resource_reserve(res, interruptible, false);
	if (ret)
		goto out_unlock;

	if (res->backup) {
		ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
						    interruptible,
						    res->dev_priv->has_mob);
		if (ret)
			goto out_unreserve;
	}
	ret = vmw_resource_validate(res);
	if (ret)
		goto out_revert;
	return 0;

out_revert:
	vmw_kms_helper_buffer_revert(res->backup);
out_unreserve:
1909
	vmw_resource_unreserve(res, false, NULL, 0);
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
out_unlock:
	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
	return ret;
}

/**
 * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
 * kms command submission.
 *
 * @res: Pointer to the resource. Typically a surface.
 * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
 * ref-counted fence pointer is returned here.
 */
void vmw_kms_helper_resource_finish(struct vmw_resource *res,
			     struct vmw_fence_obj **out_fence)
{
	if (res->backup || out_fence)
		vmw_kms_helper_buffer_finish(res->dev_priv, NULL, res->backup,
					     out_fence, NULL);

1930
	vmw_resource_unreserve(res, false, NULL, 0);
1931 1932
	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
}
1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001

/**
 * vmw_kms_update_proxy - Helper function to update a proxy surface from
 * its backing MOB.
 *
 * @res: Pointer to the surface resource
 * @clips: Clip rects in framebuffer (surface) space.
 * @num_clips: Number of clips in @clips.
 * @increment: Integer with which to increment the clip counter when looping.
 * Used to skip a predetermined number of clip rects.
 *
 * This function makes sure the proxy surface is updated from its backing MOB
 * using the region given by @clips. The surface resource @res and its backing
 * MOB needs to be reserved and validated on call.
 */
int vmw_kms_update_proxy(struct vmw_resource *res,
			 const struct drm_clip_rect *clips,
			 unsigned num_clips,
			 int increment)
{
	struct vmw_private *dev_priv = res->dev_priv;
	struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
	struct {
		SVGA3dCmdHeader header;
		SVGA3dCmdUpdateGBImage body;
	} *cmd;
	SVGA3dBox *box;
	size_t copy_size = 0;
	int i;

	if (!clips)
		return 0;

	cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
	if (!cmd) {
		DRM_ERROR("Couldn't reserve fifo space for proxy surface "
			  "update.\n");
		return -ENOMEM;
	}

	for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
		box = &cmd->body.box;

		cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
		cmd->header.size = sizeof(cmd->body);
		cmd->body.image.sid = res->id;
		cmd->body.image.face = 0;
		cmd->body.image.mipmap = 0;

		if (clips->x1 > size->width || clips->x2 > size->width ||
		    clips->y1 > size->height || clips->y2 > size->height) {
			DRM_ERROR("Invalid clips outsize of framebuffer.\n");
			return -EINVAL;
		}

		box->x = clips->x1;
		box->y = clips->y1;
		box->z = 0;
		box->w = clips->x2 - clips->x1;
		box->h = clips->y2 - clips->y1;
		box->d = 1;

		copy_size += sizeof(*cmd);
	}

	vmw_fifo_commit(dev_priv, copy_size);

	return 0;
}
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056

int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
			    unsigned unit,
			    u32 max_width,
			    u32 max_height,
			    struct drm_connector **p_con,
			    struct drm_crtc **p_crtc,
			    struct drm_display_mode **p_mode)
{
	struct drm_connector *con;
	struct vmw_display_unit *du;
	struct drm_display_mode *mode;
	int i = 0;

	list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
			    head) {
		if (i == unit)
			break;

		++i;
	}

	if (i != unit) {
		DRM_ERROR("Could not find initial display unit.\n");
		return -EINVAL;
	}

	if (list_empty(&con->modes))
		(void) vmw_du_connector_fill_modes(con, max_width, max_height);

	if (list_empty(&con->modes)) {
		DRM_ERROR("Could not find initial display mode.\n");
		return -EINVAL;
	}

	du = vmw_connector_to_du(con);
	*p_con = con;
	*p_crtc = &du->crtc;

	list_for_each_entry(mode, &con->modes, head) {
		if (mode->type & DRM_MODE_TYPE_PREFERRED)
			break;
	}

	if (mode->type & DRM_MODE_TYPE_PREFERRED)
		*p_mode = mode;
	else {
		WARN_ONCE(true, "Could not find initial preferred mode.\n");
		*p_mode = list_first_entry(&con->modes,
					   struct drm_display_mode,
					   head);
	}

	return 0;
}