text: /*
   * Copyright 2010 Red Hat Inc.
   *
   * 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, sublicense,
   * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
   *
   * Authors: Ben Skeggs
   */
  
  #include "drmP.h"
  #include "nouveau_drv.h"
  #include "nouveau_dma.h"
  #include "nouveau_ramht.h"
  #include "nouveau_fbcon.h"
  #include "nouveau_mm.h"
  
  int
  nv50_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
  {
  	struct nouveau_fbdev *nfbdev = info->par;
  	struct drm_device *dev = nfbdev->dev;
  	struct drm_nouveau_private *dev_priv = dev->dev_private;
  	struct nouveau_channel *chan = dev_priv->channel;
  	int ret;
  
  	ret = RING_SPACE(chan, rect->rop == ROP_COPY ? 7 : 11);
  	if (ret)
  		return ret;
  
  	if (rect->rop != ROP_COPY) {
  		BEGIN_RING(chan, NvSub2D, 0x02ac, 1);
  		OUT_RING(chan, 1);
  	}
  	BEGIN_RING(chan, NvSub2D, 0x0588, 1);
  	if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
  	    info->fix.visual == FB_VISUAL_DIRECTCOLOR)
  		OUT_RING(chan, ((uint32_t *)info->pseudo_palette)[rect->color]);
  	else
  		OUT_RING(chan, rect->color);
  	BEGIN_RING(chan, NvSub2D, 0x0600, 4);
  	OUT_RING(chan, rect->dx);
  	OUT_RING(chan, rect->dy);
  	OUT_RING(chan, rect->dx + rect->width);
  	OUT_RING(chan, rect->dy + rect->height);
  	if (rect->rop != ROP_COPY) {
  		BEGIN_RING(chan, NvSub2D, 0x02ac, 1);
  		OUT_RING(chan, 3);
  	}
  	FIRE_RING(chan);
  	return 0;
  }
  
  int
  nv50_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *region)
  {
  	struct nouveau_fbdev *nfbdev = info->par;
  	struct drm_device *dev = nfbdev->dev;
  	struct drm_nouveau_private *dev_priv = dev->dev_private;
  	struct nouveau_channel *chan = dev_priv->channel;
  	int ret;
  
  	ret = RING_SPACE(chan, 12);
  	if (ret)
  		return ret;
  
  	BEGIN_RING(chan, NvSub2D, 0x0110, 1);
  	OUT_RING(chan, 0);
  	BEGIN_RING(chan, NvSub2D, 0x08b0, 4);
  	OUT_RING(chan, region->dx);
  	OUT_RING(chan, region->dy);
  	OUT_RING(chan, region->width);
  	OUT_RING(chan, region->height);
  	BEGIN_RING(chan, NvSub2D, 0x08d0, 4);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, region->sx);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, region->sy);
  	FIRE_RING(chan);
  	return 0;
  }
  
  int
  nv50_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
  {
  	struct nouveau_fbdev *nfbdev = info->par;
  	struct drm_device *dev = nfbdev->dev;
  	struct drm_nouveau_private *dev_priv = dev->dev_private;
  	struct nouveau_channel *chan = dev_priv->channel;
  	uint32_t width, dwords, *data = (uint32_t *)image->data;
  	uint32_t mask = ~(~0 >> (32 - info->var.bits_per_pixel));
  	uint32_t *palette = info->pseudo_palette;
  	int ret;
  
  	if (image->depth != 1)
  		return -ENODEV;
  
  	ret = RING_SPACE(chan, 11);
  	if (ret)
  		return ret;
  
  	width = ALIGN(image->width, 32);
  	dwords = (width * image->height) >> 5;
  
  	BEGIN_RING(chan, NvSub2D, 0x0814, 2);
  	if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
  	    info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
  		OUT_RING(chan, palette[image->bg_color] | mask);
  		OUT_RING(chan, palette[image->fg_color] | mask);
  	} else {
  		OUT_RING(chan, image->bg_color);
  		OUT_RING(chan, image->fg_color);
  	}
  	BEGIN_RING(chan, NvSub2D, 0x0838, 2);
  	OUT_RING(chan, image->width);
  	OUT_RING(chan, image->height);
  	BEGIN_RING(chan, NvSub2D, 0x0850, 4);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, image->dx);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, image->dy);
  
  	while (dwords) {
  		int push = dwords > 2047 ? 2047 : dwords;
  
  		ret = RING_SPACE(chan, push + 1);
  		if (ret)
  			return ret;
  
  		dwords -= push;
  
  		BEGIN_RING(chan, NvSub2D, 0x40000860, push);
  		OUT_RINGp(chan, data, push);
  		data += push;
  	}
  
  	FIRE_RING(chan);
  	return 0;
  }
  
  int
  nv50_fbcon_accel_init(struct fb_info *info)
  {
  	struct nouveau_fbdev *nfbdev = info->par;
  	struct drm_device *dev = nfbdev->dev;
  	struct drm_nouveau_private *dev_priv = dev->dev_private;
  	struct nouveau_channel *chan = dev_priv->channel;
  	struct nouveau_framebuffer *fb = &nfbdev->nouveau_fb;
  	int ret, format;
  
  	switch (info->var.bits_per_pixel) {
  	case 8:
  		format = 0xf3;
  		break;
  	case 15:
  		format = 0xf8;
  		break;
  	case 16:
  		format = 0xe8;
  		break;
  	case 32:
  		switch (info->var.transp.length) {
  		case 0: /* depth 24 */
  		case 8: /* depth 32, just use 24.. */
  			format = 0xe6;
  			break;
  		case 2: /* depth 30 */
  			format = 0xd1;
  			break;
  		default:
  			return -EINVAL;
  		}
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	ret = nouveau_gpuobj_gr_new(dev_priv->channel, Nv2D, 0x502d);
  	if (ret)
  		return ret;
  
  	ret = RING_SPACE(chan, 59);
  	if (ret) {
  		nouveau_fbcon_gpu_lockup(info);
  		return ret;
  	}
  
  	BEGIN_RING(chan, NvSub2D, 0x0000, 1);
  	OUT_RING(chan, Nv2D);
  	BEGIN_RING(chan, NvSub2D, 0x0180, 4);
  	OUT_RING(chan, NvNotify0);
  	OUT_RING(chan, chan->vram_handle);
  	OUT_RING(chan, chan->vram_handle);
  	OUT_RING(chan, chan->vram_handle);
  	BEGIN_RING(chan, NvSub2D, 0x0290, 1);
  	OUT_RING(chan, 0);
  	BEGIN_RING(chan, NvSub2D, 0x0888, 1);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x02ac, 1);
  	OUT_RING(chan, 3);
  	BEGIN_RING(chan, NvSub2D, 0x02a0, 1);
  	OUT_RING(chan, 0x55);
  	BEGIN_RING(chan, NvSub2D, 0x08c0, 4);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, 1);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0580, 2);
  	OUT_RING(chan, 4);
  	OUT_RING(chan, format);
  	BEGIN_RING(chan, NvSub2D, 0x02e8, 2);
  	OUT_RING(chan, 2);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0804, 1);
  	OUT_RING(chan, format);
  	BEGIN_RING(chan, NvSub2D, 0x0800, 1);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0808, 3);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x081c, 1);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0840, 4);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, 1);
  	OUT_RING(chan, 0);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0200, 2);
  	OUT_RING(chan, format);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0214, 5);
  	OUT_RING(chan, info->fix.line_length);
  	OUT_RING(chan, info->var.xres_virtual);
  	OUT_RING(chan, info->var.yres_virtual);
  	OUT_RING(chan, upper_32_bits(fb->vma.offset));
  	OUT_RING(chan, lower_32_bits(fb->vma.offset));
  	BEGIN_RING(chan, NvSub2D, 0x0230, 2);
  	OUT_RING(chan, format);
  	OUT_RING(chan, 1);
  	BEGIN_RING(chan, NvSub2D, 0x0244, 5);
  	OUT_RING(chan, info->fix.line_length);
  	OUT_RING(chan, info->var.xres_virtual);
  	OUT_RING(chan, info->var.yres_virtual);
  	OUT_RING(chan, upper_32_bits(fb->vma.offset));
  	OUT_RING(chan, lower_32_bits(fb->vma.offset));
  
  	return 0;
  }
  
  