[deliverable/linux.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 "drmP.h"
#include "vmwgfx_drv.h"

#include "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,
					info->fix.line_length,
					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;

	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_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;

	/* interuptable? */
	ret = ttm_write_lock(&vmw_priv->fbdev_master.lock, false);
	if (unlikely(ret != 0))
		return ret;

	vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
	if (!vmw_bo)
		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;

	/* XXX These shouldn't be hardcoded. */
	initial_width = 800;
	initial_height = 600;

	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(fb_width, initial_width);
	initial_height = min(fb_height, initial_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;

#if 0
	info->pixmap.size = 64*1024;
	info->pixmap.buf_align = 8;
	info->pixmap.access_align = 32;
	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	info->pixmap.scan_align = 1;
#else
	info->pixmap.size = 0;
	info->pixmap.buf_align = 8;
	info->pixmap.access_align = 32;
	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	info->pixmap.scan_align = 1;
#endif

	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_sync(&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
	29	#include "drmP.h"
	30	#include "vmwgfx_drv.h"
	31
	32	#include "ttm/ttm_placement.h"
	33
	34	#define VMW_DIRTY_DELAY (HZ / 30)
	35
	36	struct vmw_fb_par {
	37	struct vmw_private *vmw_priv;
	38
	39	void *vmalloc;
	40
	41	struct vmw_dma_buffer *vmw_bo;
	42	struct ttm_bo_kmap_obj map;
	43
	44	u32 pseudo_palette[17];
	45
	46	unsigned depth;
	47	unsigned bpp;
	48
	49	unsigned max_width;
	50	unsigned max_height;
	51
	52	void *bo_ptr;
	53	unsigned bo_size;
	54	bool bo_iowrite;
	55
	56	struct {
	57	spinlock_t lock;
	58	bool active;
	59	unsigned x1;
	60	unsigned y1;
	61	unsigned x2;
	62	unsigned y2;
	63	} dirty;
	64	};
65
66	static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
67	unsigned blue, unsigned transp,
68	struct fb_info *info)
69	{
70	struct vmw_fb_par *par = info->par;
71	u32 *pal = par->pseudo_palette;
72
73	if (regno > 15) {
74	DRM_ERROR("Bad regno %u.\n", regno);
75	return 1;
76	}
77
78	switch (par->depth) {
79	case 24:
80	case 32:
81	pal[regno] = ((red & 0xff00) << 8) \|
82	(green & 0xff00) \|
83	((blue & 0xff00) >> 8);
84	break;
85	default:
86	DRM_ERROR("Bad depth %u, bpp %u.\n", par->depth, par->bpp);
87	return 1;
88	}
89
90	return 0;
91	}
92
93	static int vmw_fb_check_var(struct fb_var_screeninfo *var,
94	struct fb_info *info)
95	{
96	int depth = var->bits_per_pixel;
97	struct vmw_fb_par *par = info->par;
98	struct vmw_private *vmw_priv = par->vmw_priv;
99
100	switch (var->bits_per_pixel) {
101	case 32:
102	depth = (var->transp.length > 0) ? 32 : 24;
103	break;
104	default:
105	DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
106	return -EINVAL;
107	}
108
109	switch (depth) {
110	case 24:
111	var->red.offset = 16;
112	var->green.offset = 8;
113	var->blue.offset = 0;
114	var->red.length = 8;
115	var->green.length = 8;
116	var->blue.length = 8;
117	var->transp.length = 0;
118	var->transp.offset = 0;
119	break;
120	case 32:
121	var->red.offset = 16;
122	var->green.offset = 8;
123	var->blue.offset = 0;
124	var->red.length = 8;
125	var->green.length = 8;
126	var->blue.length = 8;
127	var->transp.length = 8;
128	var->transp.offset = 24;
129	break;
130	default:
131	DRM_ERROR("Bad depth %u.\n", depth);
132	return -EINVAL;
133	}
134
d7e1958d JB	135	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
	136	(var->xoffset != 0 \|\| var->yoffset != 0)) {
	137	DRM_ERROR("Can not handle panning without display topology\n");
fb1d9738 JB	138	return -EINVAL;
	139	}
	140
d7e1958d JB	141	if ((var->xoffset + var->xres) > par->max_width \|\|
d7e1958d JB	142	(var->yoffset + var->yres) > par->max_height) {
fb1d9738 JB	143	DRM_ERROR("Requested geom can not fit in framebuffer\n");
	144	return -EINVAL;
	145	}
	146
e133e737 TH	147	if (!vmw_kms_validate_mode_vram(vmw_priv,
	148	info->fix.line_length,
	149	var->yoffset + var->yres)) {
	150	DRM_ERROR("Requested geom can not fit in framebuffer\n");
	151	return -EINVAL;
	152	}
	153
fb1d9738 JB	154	return 0;
	155	}
	156
	157	static int vmw_fb_set_par(struct fb_info *info)
	158	{
	159	struct vmw_fb_par *par = info->par;
	160	struct vmw_private *vmw_priv = par->vmw_priv;
0bef23f9 MD	161	int ret;
	162
	163	ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
	164	info->fix.line_length,
	165	par->bpp, par->depth);
	166	if (ret)
	167	return ret;
fb1d9738	168
d7e1958d	169	if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
fb1d9738	170	/* TODO check if pitch and offset changes */
991b7b44	171	vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
fb1d9738 JB	172	vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
	173	vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
	174	vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
	175	vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
	176	vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
	177	vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
	178	vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
fb1d9738 JB	179	}
fb1d9738 JB	180
d7e1958d JB	181	/* This is really helpful since if this fails the user
	182	* can probably not see anything on the screen.
	183	*/
	184	WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
	185
fb1d9738 JB	186	return 0;
	187	}
	188
	189	static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
	190	struct fb_info *info)
	191	{
	192	return 0;
	193	}
	194
	195	static int vmw_fb_blank(int blank, struct fb_info *info)
	196	{
	197	return 0;
	198	}
	199
	200	/*
	201	* Dirty code
	202	*/
	203
	204	static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
	205	{
	206	struct vmw_private *vmw_priv = par->vmw_priv;
	207	struct fb_info *info = vmw_priv->fb_info;
	208	int stride = (info->fix.line_length / 4);
	209	int src = (int )info->screen_base;
	210	__le32 __iomem *vram_mem = par->bo_ptr;
	211	unsigned long flags;
	212	unsigned x, y, w, h;
	213	int i, k;
	214	struct {
	215	uint32_t header;
	216	SVGAFifoCmdUpdate body;
	217	} *cmd;
	218
09e2601b TH	219	if (vmw_priv->suspended)
	220	return;
	221
fb1d9738 JB	222	spin_lock_irqsave(&par->dirty.lock, flags);
	223	if (!par->dirty.active) {
	224	spin_unlock_irqrestore(&par->dirty.lock, flags);
	225	return;
	226	}
	227	x = par->dirty.x1;
	228	y = par->dirty.y1;
	229	w = min(par->dirty.x2, info->var.xres) - x;
	230	h = min(par->dirty.y2, info->var.yres) - y;
	231	par->dirty.x1 = par->dirty.x2 = 0;
	232	par->dirty.y1 = par->dirty.y2 = 0;
	233	spin_unlock_irqrestore(&par->dirty.lock, flags);
	234
	235	for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
	236	for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
	237	iowrite32(src[k], vram_mem + k);
	238	}
	239
	240	#if 0
	241	DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
	242	#endif
	243
	244	cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
	245	if (unlikely(cmd == NULL)) {
	246	DRM_ERROR("Fifo reserve failed.\n");
	247	return;
	248	}
	249
	250	cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
	251	cmd->body.x = cpu_to_le32(x);
	252	cmd->body.y = cpu_to_le32(y);
	253	cmd->body.width = cpu_to_le32(w);
	254	cmd->body.height = cpu_to_le32(h);
	255	vmw_fifo_commit(vmw_priv, sizeof(*cmd));
	256	}
	257
	258	static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
	259	unsigned x1, unsigned y1,
	260	unsigned width, unsigned height)
	261	{
	262	struct fb_info *info = par->vmw_priv->fb_info;
	263	unsigned long flags;
	264	unsigned x2 = x1 + width;
	265	unsigned y2 = y1 + height;
	266
	267	spin_lock_irqsave(&par->dirty.lock, flags);
	268	if (par->dirty.x1 == par->dirty.x2) {
	269	par->dirty.x1 = x1;
	270	par->dirty.y1 = y1;
	271	par->dirty.x2 = x2;
	272	par->dirty.y2 = y2;
	273	/* if we are active start the dirty work
	274	* we share the work with the defio system */
	275	if (par->dirty.active)
	276	schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
	277	} else {
	278	if (x1 < par->dirty.x1)
	279	par->dirty.x1 = x1;
	280	if (y1 < par->dirty.y1)
	281	par->dirty.y1 = y1;
	282	if (x2 > par->dirty.x2)
	283	par->dirty.x2 = x2;
	284	if (y2 > par->dirty.y2)
	285	par->dirty.y2 = y2;
286	}
287	spin_unlock_irqrestore(&par->dirty.lock, flags);
288	}
289
290	static void vmw_deferred_io(struct fb_info *info,
291	struct list_head *pagelist)
292	{
293	struct vmw_fb_par *par = info->par;
294	unsigned long start, end, min, max;
295	unsigned long flags;
296	struct page *page;
297	int y1, y2;
298
299	min = ULONG_MAX;
300	max = 0;
301	list_for_each_entry(page, pagelist, lru) {
302	start = page->index << PAGE_SHIFT;
303	end = start + PAGE_SIZE - 1;
304	min = min(min, start);
305	max = max(max, end);
306	}
307
308	if (min < max) {
309	y1 = min / info->fix.line_length;
310	y2 = (max / info->fix.line_length) + 1;
311
312	spin_lock_irqsave(&par->dirty.lock, flags);
313	par->dirty.x1 = 0;
314	par->dirty.y1 = y1;
315	par->dirty.x2 = info->var.xres;
316	par->dirty.y2 = y2;
317	spin_unlock_irqrestore(&par->dirty.lock, flags);
318	}
319
320	vmw_fb_dirty_flush(par);
321	};
322
323	struct fb_deferred_io vmw_defio = {
324	.delay = VMW_DIRTY_DELAY,
325	.deferred_io = vmw_deferred_io,
326	};
327
328	/*
329	* Draw code
330	*/
331
332	static void vmw_fb_fillrect(struct fb_info info, const struct fb_fillrect rect)
333	{
334	cfb_fillrect(info, rect);
335	vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
336	rect->width, rect->height);
337	}
338
339	static void vmw_fb_copyarea(struct fb_info info, const struct fb_copyarea region)
340	{
341	cfb_copyarea(info, region);
342	vmw_fb_dirty_mark(info->par, region->dx, region->dy,
343	region->width, region->height);
344	}
345
346	static void vmw_fb_imageblit(struct fb_info info, const struct fb_image image)
347	{
348	cfb_imageblit(info, image);
349	vmw_fb_dirty_mark(info->par, image->dx, image->dy,
350	image->width, image->height);
351	}
352
353	/*
354	* Bring up code
355	*/
356
357	static struct fb_ops vmw_fb_ops = {
358	.owner = THIS_MODULE,
359	.fb_check_var = vmw_fb_check_var,
360	.fb_set_par = vmw_fb_set_par,
361	.fb_setcolreg = vmw_fb_setcolreg,
362	.fb_fillrect = vmw_fb_fillrect,
363	.fb_copyarea = vmw_fb_copyarea,
364	.fb_imageblit = vmw_fb_imageblit,
365	.fb_pan_display = vmw_fb_pan_display,
366	.fb_blank = vmw_fb_blank,
367	};
368
369	static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
370	size_t size, struct vmw_dma_buffer **out)
371	{
372	struct vmw_dma_buffer *vmw_bo;
373	struct ttm_placement ne_placement = vmw_vram_ne_placement;
374	int ret;
375
376	ne_placement.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
377
378	/* interuptable? */
379	ret = ttm_write_lock(&vmw_priv->fbdev_master.lock, false);
380	if (unlikely(ret != 0))
381	return ret;
382
383	vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
384	if (!vmw_bo)
385	goto err_unlock;
386
387	ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
388	&ne_placement,
389	false,
390	&vmw_dmabuf_bo_free);
391	if (unlikely(ret != 0))
392	goto err_unlock; /* init frees the buffer on failure */
393
394	*out = vmw_bo;
395
396	ttm_write_unlock(&vmw_priv->fbdev_master.lock);
397
398	return 0;
399
400	err_unlock:
401	ttm_write_unlock(&vmw_priv->fbdev_master.lock);
402	return ret;
403	}
404
405	int vmw_fb_init(struct vmw_private *vmw_priv)
406	{
407	struct device *device = &vmw_priv->dev->pdev->dev;
408	struct vmw_fb_par *par;
409	struct fb_info *info;
410	unsigned initial_width, initial_height;
411	unsigned fb_width, fb_height;
6558429b	412	unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
fb1d9738 JB	413	int ret;
fb1d9738 JB	414
d7e1958d	415	/* XXX These shouldn't be hardcoded. */
fb1d9738 JB	416	initial_width = 800;
	417	initial_height = 600;
	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 JB	425
	426	initial_width = min(fb_width, initial_width);
	427	initial_height = min(fb_height, initial_height);
	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
	516	#if 0
	517	info->pixmap.size = 64*1024;
	518	info->pixmap.buf_align = 8;
	519	info->pixmap.access_align = 32;
	520	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	521	info->pixmap.scan_align = 1;
	522	#else
	523	info->pixmap.size = 0;
	524	info->pixmap.buf_align = 8;
	525	info->pixmap.access_align = 32;
	526	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	527	info->pixmap.scan_align = 1;
	528	#endif
	529
1471ca9a MS	530	info->apertures = alloc_apertures(1);
	531	if (!info->apertures) {
	532	ret = -ENOMEM;
	533	goto err_aper;
	534	}
	535	info->apertures->ranges[0].base = vmw_priv->vram_start;
	536	info->apertures->ranges[0].size = vmw_priv->vram_size;
f2d12b8e	537
fb1d9738 JB	538	/*
	539	* Dirty & Deferred IO
	540	*/
	541	par->dirty.x1 = par->dirty.x2 = 0;
c39721c7	542	par->dirty.y1 = par->dirty.y2 = 0;
fb1d9738 JB	543	par->dirty.active = true;
	544	spin_lock_init(&par->dirty.lock);
	545	info->fbdefio = &vmw_defio;
	546	fb_deferred_io_init(info);
	547
	548	ret = register_framebuffer(info);
	549	if (unlikely(ret != 0))
	550	goto err_defio;
	551
	552	return 0;
	553
	554	err_defio:
	555	fb_deferred_io_cleanup(info);
1471ca9a	556	err_aper:
fb1d9738 JB	557	ttm_bo_kunmap(&par->map);
	558	err_unref:
	559	ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
	560	err_free:
	561	vfree(par->vmalloc);
	562	framebuffer_release(info);
	563	vmw_priv->fb_info = NULL;
	564
	565	return ret;
	566	}
	567
	568	int vmw_fb_close(struct vmw_private *vmw_priv)
	569	{
	570	struct fb_info *info;
	571	struct vmw_fb_par *par;
	572	struct ttm_buffer_object *bo;
	573
	574	if (!vmw_priv->fb_info)
	575	return 0;
	576
	577	info = vmw_priv->fb_info;
	578	par = info->par;
	579	bo = &par->vmw_bo->base;
	580	par->vmw_bo = NULL;
	581
	582	/* ??? order */
	583	fb_deferred_io_cleanup(info);
	584	unregister_framebuffer(info);
	585
	586	ttm_bo_kunmap(&par->map);
	587	ttm_bo_unref(&bo);
	588
	589	vfree(par->vmalloc);
	590	framebuffer_release(info);
	591
	592	return 0;
	593	}
	594
fb1d9738 JB	595	int vmw_fb_off(struct vmw_private *vmw_priv)
	596	{
	597	struct fb_info *info;
	598	struct vmw_fb_par *par;
	599	unsigned long flags;
	600
	601	if (!vmw_priv->fb_info)
	602	return -EINVAL;
	603
	604	info = vmw_priv->fb_info;
	605	par = info->par;
	606
	607	spin_lock_irqsave(&par->dirty.lock, flags);
	608	par->dirty.active = false;
	609	spin_unlock_irqrestore(&par->dirty.lock, flags);
	610
a6665944	611	flush_delayed_work_sync(&info->deferred_work);
fb1d9738 JB	612
	613	par->bo_ptr = NULL;
	614	ttm_bo_kunmap(&par->map);
	615
b37a6b9a	616	vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);
fb1d9738 JB	617
	618	return 0;
	619	}
	620
	621	int vmw_fb_on(struct vmw_private *vmw_priv)
	622	{
	623	struct fb_info *info;
	624	struct vmw_fb_par *par;
	625	unsigned long flags;
	626	bool dummy;
	627	int ret;
	628
	629	if (!vmw_priv->fb_info)
	630	return -EINVAL;
	631
	632	info = vmw_priv->fb_info;
	633	par = info->par;
	634
	635	/* we are already active */
	636	if (par->bo_ptr != NULL)
	637	return 0;
	638
	639	/* Make sure that all overlays are stoped when we take over */
	640	vmw_overlay_stop_all(vmw_priv);
	641
d991ef03	642	ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
fb1d9738 JB	643	if (unlikely(ret != 0)) {
	644	DRM_ERROR("could not move buffer to start of VRAM\n");
	645	goto err_no_buffer;
	646	}
	647
	648	ret = ttm_bo_kmap(&par->vmw_bo->base,
	649	0,
	650	par->vmw_bo->base.num_pages,
	651	&par->map);
	652	BUG_ON(ret != 0);
	653	par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);
	654
	655	spin_lock_irqsave(&par->dirty.lock, flags);
	656	par->dirty.active = true;
	657	spin_unlock_irqrestore(&par->dirty.lock, flags);
	658
	659	err_no_buffer:
	660	vmw_fb_set_par(info);
	661
	662	vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);
	663
	664	/* If there already was stuff dirty we wont
	665	* schedule a new work, so lets do it now */
	666	schedule_delayed_work(&info->deferred_work, 0);
	667
	668	return 0;
	669	}