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

/**************************************************************************
 *
 * Copyright © 2007 David Airlie
 * 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 <linux/export.h>

#include <drm/drmP.h>
#include "vmwgfx_drv.h"

#include <drm/ttm/ttm_placement.h>

#define VMW_DIRTY_DELAY (HZ / 30)

struct vmw_fb_par {
	struct vmw_private *vmw_priv;

	void *vmalloc;

	struct vmw_dma_buffer *vmw_bo;
	struct ttm_bo_kmap_obj map;

	u32 pseudo_palette[17];

	unsigned depth;
	unsigned bpp;

	unsigned max_width;
	unsigned max_height;

	void *bo_ptr;
	unsigned bo_size;
	bool bo_iowrite;

	struct {
		spinlock_t lock;
		bool active;
		unsigned x1;
		unsigned y1;
		unsigned x2;
		unsigned y2;
	} dirty;
};

static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
			    unsigned blue, unsigned transp,
			    struct fb_info *info)
{
	struct vmw_fb_par *par = info->par;
	u32 *pal = par->pseudo_palette;

	if (regno > 15) {
		DRM_ERROR("Bad regno %u.\n", regno);
		return 1;
	}

	switch (par->depth) {
	case 24:
	case 32:
		pal[regno] = ((red & 0xff00) << 8) |
			      (green & 0xff00) |
			     ((blue  & 0xff00) >> 8);
		break;
	default:
		DRM_ERROR("Bad depth %u, bpp %u.\n", par->depth, par->bpp);
		return 1;
	}

	return 0;
}

static int vmw_fb_check_var(struct fb_var_screeninfo *var,
			    struct fb_info *info)
{
	int depth = var->bits_per_pixel;
	struct vmw_fb_par *par = info->par;
	struct vmw_private *vmw_priv = par->vmw_priv;

	switch (var->bits_per_pixel) {
	case 32:
		depth = (var->transp.length > 0) ? 32 : 24;
		break;
	default:
		DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
		return -EINVAL;
	}

	switch (depth) {
	case 24:
		var->red.offset = 16;
		var->green.offset = 8;
		var->blue.offset = 0;
		var->red.length = 8;
		var->green.length = 8;
		var->blue.length = 8;
		var->transp.length = 0;
		var->transp.offset = 0;
		break;
	case 32:
		var->red.offset = 16;
		var->green.offset = 8;
		var->blue.offset = 0;
		var->red.length = 8;
		var->green.length = 8;
		var->blue.length = 8;
		var->transp.length = 8;
		var->transp.offset = 24;
		break;
	default:
		DRM_ERROR("Bad depth %u.\n", depth);
		return -EINVAL;
	}

	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
	    (var->xoffset != 0 || var->yoffset != 0)) {
		DRM_ERROR("Can not handle panning without display topology\n");
		return -EINVAL;
	}

	if ((var->xoffset + var->xres) > par->max_width ||
	    (var->yoffset + var->yres) > par->max_height) {
		DRM_ERROR("Requested geom can not fit in framebuffer\n");
		return -EINVAL;
	}

	if (!vmw_kms_validate_mode_vram(vmw_priv,
					var->xres * var->bits_per_pixel/8,
					var->yoffset + var->yres)) {
		DRM_ERROR("Requested geom can not fit in framebuffer\n");
		return -EINVAL;
	}

	return 0;
}

static int vmw_fb_set_par(struct fb_info *info)
{
	struct vmw_fb_par *par = info->par;
	struct vmw_private *vmw_priv = par->vmw_priv;
	int ret;

	info->fix.line_length = info->var.xres * info->var.bits_per_pixel/8;

	ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
				 info->fix.line_length,
				 par->bpp, par->depth);
	if (ret)
		return ret;

	if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
		/* TODO check if pitch and offset changes */
		vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
		vmw_write(vmw_priv, SVGA_REG_BYTES_PER_LINE, info->fix.line_length);
		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	}

	/* This is really helpful since if this fails the user
	 * can probably not see anything on the screen.
	 */
	WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);

	return 0;
}

static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
			      struct fb_info *info)
{
	return 0;
}

static int vmw_fb_blank(int blank, struct fb_info *info)
{
	return 0;
}

/*
 * Dirty code
 */

static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
{
	struct vmw_private *vmw_priv = par->vmw_priv;
	struct fb_info *info = vmw_priv->fb_info;
	int stride = (info->fix.line_length / 4);
	int *src = (int *)info->screen_base;
	__le32 __iomem *vram_mem = par->bo_ptr;
	unsigned long flags;
	unsigned x, y, w, h;
	int i, k;
	struct {
		uint32_t header;
		SVGAFifoCmdUpdate body;
	} *cmd;

	if (vmw_priv->suspended)
		return;

	spin_lock_irqsave(&par->dirty.lock, flags);
	if (!par->dirty.active) {
		spin_unlock_irqrestore(&par->dirty.lock, flags);
		return;
	}
	x = par->dirty.x1;
	y = par->dirty.y1;
	w = min(par->dirty.x2, info->var.xres) - x;
	h = min(par->dirty.y2, info->var.yres) - y;
	par->dirty.x1 = par->dirty.x2 = 0;
	par->dirty.y1 = par->dirty.y2 = 0;
	spin_unlock_irqrestore(&par->dirty.lock, flags);

	for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
		for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
			iowrite32(src[k], vram_mem + k);
	}

#if 0
	DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
#endif

	cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
	if (unlikely(cmd == NULL)) {
		DRM_ERROR("Fifo reserve failed.\n");
		return;
	}

	cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
	cmd->body.x = cpu_to_le32(x);
	cmd->body.y = cpu_to_le32(y);
	cmd->body.width = cpu_to_le32(w);
	cmd->body.height = cpu_to_le32(h);
	vmw_fifo_commit(vmw_priv, sizeof(*cmd));
}

static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
			      unsigned x1, unsigned y1,
			      unsigned width, unsigned height)
{
	struct fb_info *info = par->vmw_priv->fb_info;
	unsigned long flags;
	unsigned x2 = x1 + width;
	unsigned y2 = y1 + height;

	spin_lock_irqsave(&par->dirty.lock, flags);
	if (par->dirty.x1 == par->dirty.x2) {
		par->dirty.x1 = x1;
		par->dirty.y1 = y1;
		par->dirty.x2 = x2;
		par->dirty.y2 = y2;
		/* if we are active start the dirty work
		 * we share the work with the defio system */
		if (par->dirty.active)
			schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
	} else {
		if (x1 < par->dirty.x1)
			par->dirty.x1 = x1;
		if (y1 < par->dirty.y1)
			par->dirty.y1 = y1;
		if (x2 > par->dirty.x2)
			par->dirty.x2 = x2;
		if (y2 > par->dirty.y2)
			par->dirty.y2 = y2;
	}
	spin_unlock_irqrestore(&par->dirty.lock, flags);
}

static void vmw_deferred_io(struct fb_info *info,
			    struct list_head *pagelist)
{
	struct vmw_fb_par *par = info->par;
	unsigned long start, end, min, max;
	unsigned long flags;
	struct page *page;
	int y1, y2;

	min = ULONG_MAX;
	max = 0;
	list_for_each_entry(page, pagelist, lru) {
		start = page->index << PAGE_SHIFT;
		end = start + PAGE_SIZE - 1;
		min = min(min, start);
		max = max(max, end);
	}

	if (min < max) {
		y1 = min / info->fix.line_length;
		y2 = (max / info->fix.line_length) + 1;

		spin_lock_irqsave(&par->dirty.lock, flags);
		par->dirty.x1 = 0;
		par->dirty.y1 = y1;
		par->dirty.x2 = info->var.xres;
		par->dirty.y2 = y2;
		spin_unlock_irqrestore(&par->dirty.lock, flags);
	}

	vmw_fb_dirty_flush(par);
};

struct fb_deferred_io vmw_defio = {
	.delay		= VMW_DIRTY_DELAY,
	.deferred_io	= vmw_deferred_io,
};

/*
 * Draw code
 */

static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
	cfb_fillrect(info, rect);
	vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
			  rect->width, rect->height);
}

static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
{
	cfb_copyarea(info, region);
	vmw_fb_dirty_mark(info->par, region->dx, region->dy,
			  region->width, region->height);
}

static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
{
	cfb_imageblit(info, image);
	vmw_fb_dirty_mark(info->par, image->dx, image->dy,
			  image->width, image->height);
}

/*
 * Bring up code
 */

static struct fb_ops vmw_fb_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = vmw_fb_check_var,
	.fb_set_par = vmw_fb_set_par,
	.fb_setcolreg = vmw_fb_setcolreg,
	.fb_fillrect = vmw_fb_fillrect,
	.fb_copyarea = vmw_fb_copyarea,
	.fb_imageblit = vmw_fb_imageblit,
	.fb_pan_display = vmw_fb_pan_display,
	.fb_blank = vmw_fb_blank,
};

static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
			    size_t size, struct vmw_dma_buffer **out)
{
	struct vmw_dma_buffer *vmw_bo;
	struct ttm_placement ne_placement = vmw_vram_ne_placement;
	int ret;

	ne_placement.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;

	(void) ttm_write_lock(&vmw_priv->reservation_sem, false);

	vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
	if (!vmw_bo) {
		ret = -ENOMEM;
		goto err_unlock;
	}

	ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
			      &ne_placement,
			      false,
			      &vmw_dmabuf_bo_free);
	if (unlikely(ret != 0))
		goto err_unlock; /* init frees the buffer on failure */

	*out = vmw_bo;

	ttm_write_unlock(&vmw_priv->fbdev_master.lock);

	return 0;

err_unlock:
	ttm_write_unlock(&vmw_priv->fbdev_master.lock);
	return ret;
}

int vmw_fb_init(struct vmw_private *vmw_priv)
{
	struct device *device = &vmw_priv->dev->pdev->dev;
	struct vmw_fb_par *par;
	struct fb_info *info;
	unsigned initial_width, initial_height;
	unsigned fb_width, fb_height;
	unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
	int ret;

	fb_bpp = 32;
	fb_depth = 24;

	/* XXX As shouldn't these be as well. */
	fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
	fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);

	initial_width = min(vmw_priv->initial_width, fb_width);
	initial_height = min(vmw_priv->initial_height, fb_height);

	fb_pitch = fb_width * fb_bpp / 8;
	fb_size = fb_pitch * fb_height;
	fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);

	info = framebuffer_alloc(sizeof(*par), device);
	if (!info)
		return -ENOMEM;

	/*
	 * Par
	 */
	vmw_priv->fb_info = info;
	par = info->par;
	par->vmw_priv = vmw_priv;
	par->depth = fb_depth;
	par->bpp = fb_bpp;
	par->vmalloc = NULL;
	par->max_width = fb_width;
	par->max_height = fb_height;

	/*
	 * Create buffers and alloc memory
	 */
	par->vmalloc = vmalloc(fb_size);
	if (unlikely(par->vmalloc == NULL)) {
		ret = -ENOMEM;
		goto err_free;
	}

	ret = vmw_fb_create_bo(vmw_priv, fb_size, &par->vmw_bo);
	if (unlikely(ret != 0))
		goto err_free;

	ret = ttm_bo_kmap(&par->vmw_bo->base,
			  0,
			  par->vmw_bo->base.num_pages,
			  &par->map);
	if (unlikely(ret != 0))
		goto err_unref;
	par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
	par->bo_size = fb_size;

	/*
	 * Fixed and var
	 */
	strcpy(info->fix.id, "svgadrmfb");
	info->fix.type = FB_TYPE_PACKED_PIXELS;
	info->fix.visual = FB_VISUAL_TRUECOLOR;
	info->fix.type_aux = 0;
	info->fix.xpanstep = 1; /* doing it in hw */
	info->fix.ypanstep = 1; /* doing it in hw */
	info->fix.ywrapstep = 0;
	info->fix.accel = FB_ACCEL_NONE;
	info->fix.line_length = fb_pitch;

	info->fix.smem_start = 0;
	info->fix.smem_len = fb_size;

	info->pseudo_palette = par->pseudo_palette;
	info->screen_base = par->vmalloc;
	info->screen_size = fb_size;

	info->flags = FBINFO_DEFAULT;
	info->fbops = &vmw_fb_ops;

	/* 24 depth per default */
	info->var.red.offset = 16;
	info->var.green.offset = 8;
	info->var.blue.offset = 0;
	info->var.red.length = 8;
	info->var.green.length = 8;
	info->var.blue.length = 8;
	info->var.transp.offset = 0;
	info->var.transp.length = 0;

	info->var.xres_virtual = fb_width;
	info->var.yres_virtual = fb_height;
	info->var.bits_per_pixel = par->bpp;
	info->var.xoffset = 0;
	info->var.yoffset = 0;
	info->var.activate = FB_ACTIVATE_NOW;
	info->var.height = -1;
	info->var.width = -1;

	info->var.xres = initial_width;
	info->var.yres = initial_height;

	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */

	info->apertures = alloc_apertures(1);
	if (!info->apertures) {
		ret = -ENOMEM;
		goto err_aper;
	}
	info->apertures->ranges[0].base = vmw_priv->vram_start;
	info->apertures->ranges[0].size = vmw_priv->vram_size;

	/*
	 * Dirty & Deferred IO
	 */
	par->dirty.x1 = par->dirty.x2 = 0;
	par->dirty.y1 = par->dirty.y2 = 0;
	par->dirty.active = true;
	spin_lock_init(&par->dirty.lock);
	info->fbdefio = &vmw_defio;
	fb_deferred_io_init(info);

	ret = register_framebuffer(info);
	if (unlikely(ret != 0))
		goto err_defio;

	return 0;

err_defio:
	fb_deferred_io_cleanup(info);
err_aper:
	ttm_bo_kunmap(&par->map);
err_unref:
	ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
err_free:
	vfree(par->vmalloc);
	framebuffer_release(info);
	vmw_priv->fb_info = NULL;

	return ret;
}

int vmw_fb_close(struct vmw_private *vmw_priv)
{
	struct fb_info *info;
	struct vmw_fb_par *par;
	struct ttm_buffer_object *bo;

	if (!vmw_priv->fb_info)
		return 0;

	info = vmw_priv->fb_info;
	par = info->par;
	bo = &par->vmw_bo->base;
	par->vmw_bo = NULL;

	/* ??? order */
	fb_deferred_io_cleanup(info);
	unregister_framebuffer(info);

	ttm_bo_kunmap(&par->map);
	ttm_bo_unref(&bo);

	vfree(par->vmalloc);
	framebuffer_release(info);

	return 0;
}

int vmw_fb_off(struct vmw_private *vmw_priv)
{
	struct fb_info *info;
	struct vmw_fb_par *par;
	unsigned long flags;

	if (!vmw_priv->fb_info)
		return -EINVAL;

	info = vmw_priv->fb_info;
	par = info->par;

	spin_lock_irqsave(&par->dirty.lock, flags);
	par->dirty.active = false;
	spin_unlock_irqrestore(&par->dirty.lock, flags);

	flush_delayed_work(&info->deferred_work);

	par->bo_ptr = NULL;
	ttm_bo_kunmap(&par->map);

	vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);

	return 0;
}

int vmw_fb_on(struct vmw_private *vmw_priv)
{
	struct fb_info *info;
	struct vmw_fb_par *par;
	unsigned long flags;
	bool dummy;
	int ret;

	if (!vmw_priv->fb_info)
		return -EINVAL;

	info = vmw_priv->fb_info;
	par = info->par;

	/* we are already active */
	if (par->bo_ptr != NULL)
		return 0;

	/* Make sure that all overlays are stoped when we take over */
	vmw_overlay_stop_all(vmw_priv);

	ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
	if (unlikely(ret != 0)) {
		DRM_ERROR("could not move buffer to start of VRAM\n");
		goto err_no_buffer;
	}

	ret = ttm_bo_kmap(&par->vmw_bo->base,
			  0,
			  par->vmw_bo->base.num_pages,
			  &par->map);
	BUG_ON(ret != 0);
	par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);

	spin_lock_irqsave(&par->dirty.lock, flags);
	par->dirty.active = true;
	spin_unlock_irqrestore(&par->dirty.lock, flags);

err_no_buffer:
	vmw_fb_set_par(info);

	vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);

	/* If there already was stuff dirty we wont
	 * schedule a new work, so lets do it now */
	schedule_delayed_work(&info->deferred_work, 0);

	return 0;
}
Commit	Line	Data
fb1d9738 JB	1	/**************************************************************************
	2	*
	3	* Copyright © 2007 David Airlie
	4	* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
	5	* All Rights Reserved.
	6	*
	7	* Permission is hereby granted, free of charge, to any person obtaining a
	8	* copy of this software and associated documentation files (the
	9	* "Software"), to deal in the Software without restriction, including
	10	* without limitation the rights to use, copy, modify, merge, publish,
	11	* distribute, sub license, and/or sell copies of the Software, and to
	12	* permit persons to whom the Software is furnished to do so, subject to
	13	* the following conditions:
	14	*
	15	* The above copyright notice and this permission notice (including the
	16	* next paragraph) shall be included in all copies or substantial portions
	17	* of the Software.
	18	*
	19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	20	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	21	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	22	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	23	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	24	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	25	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	26	*
	27	**************************************************************************/
	28
2d1a8a48 PG	29	#include <linux/export.h>
2d1a8a48 PG	30
760285e7	31	#include <drm/drmP.h>
fb1d9738 JB	32	#include "vmwgfx_drv.h"
fb1d9738 JB	33
760285e7	34	#include <drm/ttm/ttm_placement.h>
fb1d9738 JB	35
	36	#define VMW_DIRTY_DELAY (HZ / 30)
	37
	38	struct vmw_fb_par {
	39	struct vmw_private *vmw_priv;
	40
	41	void *vmalloc;
	42
	43	struct vmw_dma_buffer *vmw_bo;
	44	struct ttm_bo_kmap_obj map;
	45
	46	u32 pseudo_palette[17];
	47
	48	unsigned depth;
	49	unsigned bpp;
	50
	51	unsigned max_width;
	52	unsigned max_height;
	53
	54	void *bo_ptr;
	55	unsigned bo_size;
	56	bool bo_iowrite;
	57
	58	struct {
	59	spinlock_t lock;
	60	bool active;
	61	unsigned x1;
	62	unsigned y1;
	63	unsigned x2;
	64	unsigned y2;
	65	} dirty;
	66	};
	67
	68	static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
	69	unsigned blue, unsigned transp,
	70	struct fb_info *info)
	71	{
	72	struct vmw_fb_par *par = info->par;
	73	u32 *pal = par->pseudo_palette;
	74
	75	if (regno > 15) {
	76	DRM_ERROR("Bad regno %u.\n", regno);
	77	return 1;
	78	}
	79
	80	switch (par->depth) {
	81	case 24:
	82	case 32:
	83	pal[regno] = ((red & 0xff00) << 8) \|
	84	(green & 0xff00) \|
	85	((blue & 0xff00) >> 8);
	86	break;
	87	default:
	88	DRM_ERROR("Bad depth %u, bpp %u.\n", par->depth, par->bpp);
	89	return 1;
	90	}
	91
	92	return 0;
	93	}
	94
	95	static int vmw_fb_check_var(struct fb_var_screeninfo *var,
	96	struct fb_info *info)
	97	{
	98	int depth = var->bits_per_pixel;
99	struct vmw_fb_par *par = info->par;
100	struct vmw_private *vmw_priv = par->vmw_priv;
101
102	switch (var->bits_per_pixel) {
103	case 32:
104	depth = (var->transp.length > 0) ? 32 : 24;
105	break;
106	default:
107	DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
108	return -EINVAL;
109	}
110
111	switch (depth) {
112	case 24:
113	var->red.offset = 16;
114	var->green.offset = 8;
115	var->blue.offset = 0;
116	var->red.length = 8;
117	var->green.length = 8;
118	var->blue.length = 8;
119	var->transp.length = 0;
120	var->transp.offset = 0;
121	break;
122	case 32:
123	var->red.offset = 16;
124	var->green.offset = 8;
125	var->blue.offset = 0;
126	var->red.length = 8;
127	var->green.length = 8;
128	var->blue.length = 8;
129	var->transp.length = 8;
130	var->transp.offset = 24;
131	break;
132	default:
133	DRM_ERROR("Bad depth %u.\n", depth);
134	return -EINVAL;
135	}
136
d7e1958d JB	137	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
	138	(var->xoffset != 0 \|\| var->yoffset != 0)) {
	139	DRM_ERROR("Can not handle panning without display topology\n");
fb1d9738 JB	140	return -EINVAL;
	141	}
	142
d7e1958d JB	143	if ((var->xoffset + var->xres) > par->max_width \|\|
d7e1958d JB	144	(var->yoffset + var->yres) > par->max_height) {
fb1d9738 JB	145	DRM_ERROR("Requested geom can not fit in framebuffer\n");
	146	return -EINVAL;
	147	}
	148
e133e737	149	if (!vmw_kms_validate_mode_vram(vmw_priv,
aa6de142	150	var->xres * var->bits_per_pixel/8,
e133e737 TH	151	var->yoffset + var->yres)) {
	152	DRM_ERROR("Requested geom can not fit in framebuffer\n");
	153	return -EINVAL;
	154	}
	155
fb1d9738 JB	156	return 0;
	157	}
	158
	159	static int vmw_fb_set_par(struct fb_info *info)
	160	{
	161	struct vmw_fb_par *par = info->par;
	162	struct vmw_private *vmw_priv = par->vmw_priv;
0bef23f9 MD	163	int ret;
0bef23f9 MD	164
aa6de142 CF	165	info->fix.line_length = info->var.xres * info->var.bits_per_pixel/8;
aa6de142 CF	166
0bef23f9 MD	167	ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
	168	info->fix.line_length,
	169	par->bpp, par->depth);
	170	if (ret)
	171	return ret;
fb1d9738	172
d7e1958d	173	if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
fb1d9738	174	/* TODO check if pitch and offset changes */
991b7b44	175	vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
fb1d9738 JB	176	vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
	177	vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
	178	vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
	179	vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
	180	vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
	181	vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
aa6de142	182	vmw_write(vmw_priv, SVGA_REG_BYTES_PER_LINE, info->fix.line_length);
fb1d9738	183	vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
fb1d9738 JB	184	}
fb1d9738 JB	185
d7e1958d JB	186	/* This is really helpful since if this fails the user
	187	* can probably not see anything on the screen.
	188	*/
	189	WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
	190
fb1d9738 JB	191	return 0;
	192	}
	193
	194	static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
	195	struct fb_info *info)
	196	{
	197	return 0;
	198	}
	199
	200	static int vmw_fb_blank(int blank, struct fb_info *info)
	201	{
	202	return 0;
	203	}
	204
	205	/*
	206	* Dirty code
	207	*/
	208
	209	static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
	210	{
	211	struct vmw_private *vmw_priv = par->vmw_priv;
	212	struct fb_info *info = vmw_priv->fb_info;
	213	int stride = (info->fix.line_length / 4);
	214	int src = (int )info->screen_base;
	215	__le32 __iomem *vram_mem = par->bo_ptr;
	216	unsigned long flags;
	217	unsigned x, y, w, h;
	218	int i, k;
	219	struct {
	220	uint32_t header;
	221	SVGAFifoCmdUpdate body;
	222	} *cmd;
	223
09e2601b TH	224	if (vmw_priv->suspended)
	225	return;
	226
fb1d9738 JB	227	spin_lock_irqsave(&par->dirty.lock, flags);
	228	if (!par->dirty.active) {
	229	spin_unlock_irqrestore(&par->dirty.lock, flags);
	230	return;
	231	}
	232	x = par->dirty.x1;
	233	y = par->dirty.y1;
	234	w = min(par->dirty.x2, info->var.xres) - x;
	235	h = min(par->dirty.y2, info->var.yres) - y;
	236	par->dirty.x1 = par->dirty.x2 = 0;
	237	par->dirty.y1 = par->dirty.y2 = 0;
	238	spin_unlock_irqrestore(&par->dirty.lock, flags);
	239
	240	for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
	241	for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
	242	iowrite32(src[k], vram_mem + k);
	243	}
	244
	245	#if 0
	246	DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
	247	#endif
	248
	249	cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
	250	if (unlikely(cmd == NULL)) {
	251	DRM_ERROR("Fifo reserve failed.\n");
	252	return;
	253	}
	254
	255	cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
	256	cmd->body.x = cpu_to_le32(x);
	257	cmd->body.y = cpu_to_le32(y);
	258	cmd->body.width = cpu_to_le32(w);
	259	cmd->body.height = cpu_to_le32(h);
	260	vmw_fifo_commit(vmw_priv, sizeof(*cmd));
	261	}
	262
	263	static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
	264	unsigned x1, unsigned y1,
	265	unsigned width, unsigned height)
	266	{
	267	struct fb_info *info = par->vmw_priv->fb_info;
	268	unsigned long flags;
	269	unsigned x2 = x1 + width;
	270	unsigned y2 = y1 + height;
	271
	272	spin_lock_irqsave(&par->dirty.lock, flags);
	273	if (par->dirty.x1 == par->dirty.x2) {
	274	par->dirty.x1 = x1;
	275	par->dirty.y1 = y1;
	276	par->dirty.x2 = x2;
	277	par->dirty.y2 = y2;
	278	/* if we are active start the dirty work
	279	* we share the work with the defio system */
	280	if (par->dirty.active)
	281	schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
	282	} else {
	283	if (x1 < par->dirty.x1)
	284	par->dirty.x1 = x1;
	285	if (y1 < par->dirty.y1)
	286	par->dirty.y1 = y1;
	287	if (x2 > par->dirty.x2)
	288	par->dirty.x2 = x2;
	289	if (y2 > par->dirty.y2)
	290	par->dirty.y2 = y2;
291	}
292	spin_unlock_irqrestore(&par->dirty.lock, flags);
293	}
294
295	static void vmw_deferred_io(struct fb_info *info,
296	struct list_head *pagelist)
297	{
298	struct vmw_fb_par *par = info->par;
299	unsigned long start, end, min, max;
300	unsigned long flags;
301	struct page *page;
302	int y1, y2;
303
304	min = ULONG_MAX;
305	max = 0;
306	list_for_each_entry(page, pagelist, lru) {
307	start = page->index << PAGE_SHIFT;
308	end = start + PAGE_SIZE - 1;
309	min = min(min, start);
310	max = max(max, end);
311	}
312
313	if (min < max) {
314	y1 = min / info->fix.line_length;
315	y2 = (max / info->fix.line_length) + 1;
316
317	spin_lock_irqsave(&par->dirty.lock, flags);
318	par->dirty.x1 = 0;
319	par->dirty.y1 = y1;
320	par->dirty.x2 = info->var.xres;
321	par->dirty.y2 = y2;
322	spin_unlock_irqrestore(&par->dirty.lock, flags);
323	}
324
325	vmw_fb_dirty_flush(par);
326	};
327
328	struct fb_deferred_io vmw_defio = {
329	.delay = VMW_DIRTY_DELAY,
330	.deferred_io = vmw_deferred_io,
331	};
332
333	/*
334	* Draw code
335	*/
336
337	static void vmw_fb_fillrect(struct fb_info info, const struct fb_fillrect rect)
338	{
339	cfb_fillrect(info, rect);
340	vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
341	rect->width, rect->height);
342	}
343
344	static void vmw_fb_copyarea(struct fb_info info, const struct fb_copyarea region)
345	{
346	cfb_copyarea(info, region);
347	vmw_fb_dirty_mark(info->par, region->dx, region->dy,
348	region->width, region->height);
349	}
350
351	static void vmw_fb_imageblit(struct fb_info info, const struct fb_image image)
352	{
353	cfb_imageblit(info, image);
354	vmw_fb_dirty_mark(info->par, image->dx, image->dy,
355	image->width, image->height);
356	}
357
358	/*
359	* Bring up code
360	*/
361
362	static struct fb_ops vmw_fb_ops = {
363	.owner = THIS_MODULE,
364	.fb_check_var = vmw_fb_check_var,
365	.fb_set_par = vmw_fb_set_par,
366	.fb_setcolreg = vmw_fb_setcolreg,
367	.fb_fillrect = vmw_fb_fillrect,
368	.fb_copyarea = vmw_fb_copyarea,
369	.fb_imageblit = vmw_fb_imageblit,
370	.fb_pan_display = vmw_fb_pan_display,
371	.fb_blank = vmw_fb_blank,
372	};
373
374	static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
375	size_t size, struct vmw_dma_buffer **out)
376	{
377	struct vmw_dma_buffer *vmw_bo;
378	struct ttm_placement ne_placement = vmw_vram_ne_placement;
379	int ret;
380
381	ne_placement.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
382
294adf7d	383	(void) ttm_write_lock(&vmw_priv->reservation_sem, false);
fb1d9738 JB	384
fb1d9738 JB	385	vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
294adf7d TH	386	if (!vmw_bo) {
294adf7d TH	387	ret = -ENOMEM;
fb1d9738	388	goto err_unlock;
294adf7d	389	}
fb1d9738 JB	390
	391	ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
	392	&ne_placement,
	393	false,
	394	&vmw_dmabuf_bo_free);
	395	if (unlikely(ret != 0))
	396	goto err_unlock; /* init frees the buffer on failure */
	397
	398	*out = vmw_bo;
	399
	400	ttm_write_unlock(&vmw_priv->fbdev_master.lock);
	401
	402	return 0;
	403
	404	err_unlock:
	405	ttm_write_unlock(&vmw_priv->fbdev_master.lock);
	406	return ret;
	407	}
	408
	409	int vmw_fb_init(struct vmw_private *vmw_priv)
	410	{
	411	struct device *device = &vmw_priv->dev->pdev->dev;
	412	struct vmw_fb_par *par;
	413	struct fb_info *info;
	414	unsigned initial_width, initial_height;
	415	unsigned fb_width, fb_height;
6558429b	416	unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
fb1d9738 JB	417	int ret;
fb1d9738 JB	418
6558429b	419	fb_bpp = 32;
fb1d9738 JB	420	fb_depth = 24;
fb1d9738 JB	421
d7e1958d JB	422	/* XXX As shouldn't these be as well. */
	423	fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
	424	fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
fb1d9738	425
eb4f923b JB	426	initial_width = min(vmw_priv->initial_width, fb_width);
eb4f923b JB	427	initial_height = min(vmw_priv->initial_height, fb_height);
fb1d9738	428
6558429b	429	fb_pitch = fb_width * fb_bpp / 8;
d7e1958d	430	fb_size = fb_pitch * fb_height;
fb1d9738	431	fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
fb1d9738 JB	432
	433	info = framebuffer_alloc(sizeof(*par), device);
	434	if (!info)
	435	return -ENOMEM;
	436
	437	/*
	438	* Par
	439	*/
	440	vmw_priv->fb_info = info;
	441	par = info->par;
	442	par->vmw_priv = vmw_priv;
	443	par->depth = fb_depth;
6558429b	444	par->bpp = fb_bpp;
fb1d9738 JB	445	par->vmalloc = NULL;
	446	par->max_width = fb_width;
	447	par->max_height = fb_height;
	448
	449	/*
	450	* Create buffers and alloc memory
	451	*/
	452	par->vmalloc = vmalloc(fb_size);
	453	if (unlikely(par->vmalloc == NULL)) {
	454	ret = -ENOMEM;
	455	goto err_free;
	456	}
	457
	458	ret = vmw_fb_create_bo(vmw_priv, fb_size, &par->vmw_bo);
	459	if (unlikely(ret != 0))
	460	goto err_free;
	461
	462	ret = ttm_bo_kmap(&par->vmw_bo->base,
	463	0,
	464	par->vmw_bo->base.num_pages,
	465	&par->map);
	466	if (unlikely(ret != 0))
	467	goto err_unref;
	468	par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
	469	par->bo_size = fb_size;
	470
	471	/*
	472	* Fixed and var
	473	*/
	474	strcpy(info->fix.id, "svgadrmfb");
	475	info->fix.type = FB_TYPE_PACKED_PIXELS;
	476	info->fix.visual = FB_VISUAL_TRUECOLOR;
	477	info->fix.type_aux = 0;
	478	info->fix.xpanstep = 1; /* doing it in hw */
	479	info->fix.ypanstep = 1; /* doing it in hw */
	480	info->fix.ywrapstep = 0;
	481	info->fix.accel = FB_ACCEL_NONE;
	482	info->fix.line_length = fb_pitch;
	483
	484	info->fix.smem_start = 0;
	485	info->fix.smem_len = fb_size;
	486
fb1d9738 JB	487	info->pseudo_palette = par->pseudo_palette;
	488	info->screen_base = par->vmalloc;
	489	info->screen_size = fb_size;
	490
	491	info->flags = FBINFO_DEFAULT;
	492	info->fbops = &vmw_fb_ops;
	493
	494	/* 24 depth per default */
	495	info->var.red.offset = 16;
	496	info->var.green.offset = 8;
	497	info->var.blue.offset = 0;
	498	info->var.red.length = 8;
	499	info->var.green.length = 8;
	500	info->var.blue.length = 8;
	501	info->var.transp.offset = 0;
	502	info->var.transp.length = 0;
	503
	504	info->var.xres_virtual = fb_width;
	505	info->var.yres_virtual = fb_height;
	506	info->var.bits_per_pixel = par->bpp;
	507	info->var.xoffset = 0;
	508	info->var.yoffset = 0;
	509	info->var.activate = FB_ACTIVATE_NOW;
	510	info->var.height = -1;
	511	info->var.width = -1;
	512
	513	info->var.xres = initial_width;
	514	info->var.yres = initial_height;
	515
fb2a99e1	516	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
fb1d9738	517
1471ca9a MS	518	info->apertures = alloc_apertures(1);
	519	if (!info->apertures) {
	520	ret = -ENOMEM;
	521	goto err_aper;
	522	}
	523	info->apertures->ranges[0].base = vmw_priv->vram_start;
	524	info->apertures->ranges[0].size = vmw_priv->vram_size;
f2d12b8e	525
fb1d9738 JB	526	/*
	527	* Dirty & Deferred IO
	528	*/
	529	par->dirty.x1 = par->dirty.x2 = 0;
c39721c7	530	par->dirty.y1 = par->dirty.y2 = 0;
fb1d9738 JB	531	par->dirty.active = true;
	532	spin_lock_init(&par->dirty.lock);
	533	info->fbdefio = &vmw_defio;
	534	fb_deferred_io_init(info);
	535
	536	ret = register_framebuffer(info);
	537	if (unlikely(ret != 0))
	538	goto err_defio;
	539
	540	return 0;
	541
	542	err_defio:
	543	fb_deferred_io_cleanup(info);
1471ca9a	544	err_aper:
fb1d9738 JB	545	ttm_bo_kunmap(&par->map);
	546	err_unref:
	547	ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
	548	err_free:
	549	vfree(par->vmalloc);
	550	framebuffer_release(info);
	551	vmw_priv->fb_info = NULL;
	552
	553	return ret;
	554	}
	555
	556	int vmw_fb_close(struct vmw_private *vmw_priv)
	557	{
	558	struct fb_info *info;
	559	struct vmw_fb_par *par;
	560	struct ttm_buffer_object *bo;
	561
	562	if (!vmw_priv->fb_info)
	563	return 0;
	564
	565	info = vmw_priv->fb_info;
	566	par = info->par;
	567	bo = &par->vmw_bo->base;
	568	par->vmw_bo = NULL;
	569
	570	/* ??? order */
	571	fb_deferred_io_cleanup(info);
	572	unregister_framebuffer(info);
	573
	574	ttm_bo_kunmap(&par->map);
	575	ttm_bo_unref(&bo);
	576
	577	vfree(par->vmalloc);
	578	framebuffer_release(info);
	579
	580	return 0;
	581	}
	582
fb1d9738 JB	583	int vmw_fb_off(struct vmw_private *vmw_priv)
	584	{
	585	struct fb_info *info;
	586	struct vmw_fb_par *par;
	587	unsigned long flags;
	588
	589	if (!vmw_priv->fb_info)
	590	return -EINVAL;
	591
	592	info = vmw_priv->fb_info;
	593	par = info->par;
	594
	595	spin_lock_irqsave(&par->dirty.lock, flags);
	596	par->dirty.active = false;
	597	spin_unlock_irqrestore(&par->dirty.lock, flags);
	598
43829731	599	flush_delayed_work(&info->deferred_work);
fb1d9738 JB	600
	601	par->bo_ptr = NULL;
	602	ttm_bo_kunmap(&par->map);
	603
b37a6b9a	604	vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);
fb1d9738 JB	605
	606	return 0;
	607	}
	608
	609	int vmw_fb_on(struct vmw_private *vmw_priv)
	610	{
	611	struct fb_info *info;
	612	struct vmw_fb_par *par;
	613	unsigned long flags;
	614	bool dummy;
	615	int ret;
	616
	617	if (!vmw_priv->fb_info)
	618	return -EINVAL;
	619
	620	info = vmw_priv->fb_info;
	621	par = info->par;
	622
	623	/* we are already active */
	624	if (par->bo_ptr != NULL)
	625	return 0;
	626
	627	/* Make sure that all overlays are stoped when we take over */
	628	vmw_overlay_stop_all(vmw_priv);
	629
d991ef03	630	ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
fb1d9738 JB	631	if (unlikely(ret != 0)) {
	632	DRM_ERROR("could not move buffer to start of VRAM\n");
	633	goto err_no_buffer;
	634	}
	635
	636	ret = ttm_bo_kmap(&par->vmw_bo->base,
	637	0,
	638	par->vmw_bo->base.num_pages,
	639	&par->map);
	640	BUG_ON(ret != 0);
	641	par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);
	642
	643	spin_lock_irqsave(&par->dirty.lock, flags);
	644	par->dirty.active = true;
	645	spin_unlock_irqrestore(&par->dirty.lock, flags);
	646
	647	err_no_buffer:
	648	vmw_fb_set_par(info);
	649
	650	vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);
	651
	652	/* If there already was stuff dirty we wont
	653	* schedule a new work, so lets do it now */
	654	schedule_delayed_work(&info->deferred_work, 0);
	655
	656	return 0;
	657	}