q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/drivers/gpu/drm/nouveau/nv04_fbcon.c
Ben Skeggs ceed5f30bf drm/nouveau: disallow fbcon accel if running in interrupt context 
A future commit will add locking to the DRM's channel, and there's numerous
problems that come up if we allow printk from an interrupt context to be
accelerated.  It seems saner to just disallow it completely.

As a nice side-effect, all the "to accel or not to accel" logic gets moved
out of the chipset-specific code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03 15:04:20 +10:00

289 lines
7.6 KiB
C
Raw Blame History

/*
* Copyright 2009 Ben Skeggs
* Copyright 2008 Stuart Bennett
*
* 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_ramht.h"
#include "nouveau_fbcon.h"
int
nv04_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, 4);
if (ret)
return ret;
BEGIN_RING(chan, NvSubImageBlit, 0x0300, 3);
OUT_RING(chan, (region->sy << 16) | region->sx);
OUT_RING(chan, (region->dy << 16) | region->dx);
OUT_RING(chan, (region->height << 16) | region->width);
FIRE_RING(chan);
return 0;
}
int
nv04_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, 7);
if (ret)
return ret;
BEGIN_RING(chan, NvSubGdiRect, 0x02fc, 1);
OUT_RING(chan, (rect->rop != ROP_COPY) ? 1 : 3);
BEGIN_RING(chan, NvSubGdiRect, 0x03fc, 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, NvSubGdiRect, 0x0400, 2);
OUT_RING(chan, (rect->dx << 16) | rect->dy);
OUT_RING(chan, (rect->width << 16) | rect->height);
FIRE_RING(chan);
return 0;
}
int
nv04_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 fg;
uint32_t bg;
uint32_t dsize;
uint32_t width;
uint32_t *data = (uint32_t *)image->data;
int ret;
if (image->depth != 1)
return -ENODEV;
ret = RING_SPACE(chan, 8);
if (ret)
return ret;
width = ALIGN(image->width, 8);
dsize = ALIGN(width * image->height, 32) >> 5;
if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
fg = ((uint32_t *) info->pseudo_palette)[image->fg_color];
bg = ((uint32_t *) info->pseudo_palette)[image->bg_color];
} else {
fg = image->fg_color;
bg = image->bg_color;
}
BEGIN_RING(chan, NvSubGdiRect, 0x0be4, 7);
OUT_RING(chan, (image->dy << 16) | (image->dx & 0xffff));
OUT_RING(chan, ((image->dy + image->height) << 16) |
((image->dx + image->width) & 0xffff));
OUT_RING(chan, bg);
OUT_RING(chan, fg);
OUT_RING(chan, (image->height << 16) | width);
OUT_RING(chan, (image->height << 16) | image->width);
OUT_RING(chan, (image->dy << 16) | (image->dx & 0xffff));
while (dsize) {
int iter_len = dsize > 128 ? 128 : dsize;
ret = RING_SPACE(chan, iter_len + 1);
if (ret)
return ret;
BEGIN_RING(chan, NvSubGdiRect, 0x0c00, iter_len);
OUT_RINGp(chan, data, iter_len);
data += iter_len;
dsize -= iter_len;
}
FIRE_RING(chan);
return 0;
}
static int
nv04_fbcon_grobj_new(struct drm_device *dev, int class, uint32_t handle)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_gpuobj *obj = NULL;
int ret;
ret = nouveau_gpuobj_gr_new(dev_priv->channel, class, &obj);
if (ret)
return ret;
ret = nouveau_ramht_insert(dev_priv->channel, handle, obj);
nouveau_gpuobj_ref(NULL, &obj);
return ret;
}
int
nv04_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;
const int sub = NvSubCtxSurf2D;
int surface_fmt, pattern_fmt, rect_fmt;
int ret;
switch (info->var.bits_per_pixel) {
case 8:
surface_fmt = 1;
pattern_fmt = 3;
rect_fmt = 3;
break;
case 16:
surface_fmt = 4;
pattern_fmt = 1;
rect_fmt = 1;
break;
case 32:
switch (info->var.transp.length) {
case 0: /* depth 24 */
case 8: /* depth 32 */
break;
default:
return -EINVAL;
}
surface_fmt = 6;
pattern_fmt = 3;
rect_fmt = 3;
break;
default:
return -EINVAL;
}
ret = nv04_fbcon_grobj_new(dev, dev_priv->card_type >= NV_10 ?
0x0062 : 0x0042, NvCtxSurf2D);
if (ret)
return ret;
ret = nv04_fbcon_grobj_new(dev, 0x0019, NvClipRect);
if (ret)
return ret;
ret = nv04_fbcon_grobj_new(dev, 0x0043, NvRop);
if (ret)
return ret;
ret = nv04_fbcon_grobj_new(dev, 0x0044, NvImagePatt);
if (ret)
return ret;
ret = nv04_fbcon_grobj_new(dev, 0x004a, NvGdiRect);
if (ret)
return ret;
ret = nv04_fbcon_grobj_new(dev, dev_priv->chipset >= 0x11 ?
0x009f : 0x005f, NvImageBlit);
if (ret)
return ret;
if (RING_SPACE(chan, 49)) {
nouveau_fbcon_gpu_lockup(info);
return 0;
}
BEGIN_RING(chan, sub, 0x0000, 1);
OUT_RING(chan, NvCtxSurf2D);
BEGIN_RING(chan, sub, 0x0184, 2);
OUT_RING(chan, NvDmaFB);
OUT_RING(chan, NvDmaFB);
BEGIN_RING(chan, sub, 0x0300, 4);
OUT_RING(chan, surface_fmt);
OUT_RING(chan, info->fix.line_length | (info->fix.line_length << 16));
OUT_RING(chan, info->fix.smem_start - dev->mode_config.fb_base);
OUT_RING(chan, info->fix.smem_start - dev->mode_config.fb_base);
BEGIN_RING(chan, sub, 0x0000, 1);
OUT_RING(chan, NvRop);
BEGIN_RING(chan, sub, 0x0300, 1);
OUT_RING(chan, 0x55);
BEGIN_RING(chan, sub, 0x0000, 1);
OUT_RING(chan, NvImagePatt);
BEGIN_RING(chan, sub, 0x0300, 8);
OUT_RING(chan, pattern_fmt);
#ifdef __BIG_ENDIAN
OUT_RING(chan, 2);
#else
OUT_RING(chan, 1);
#endif
OUT_RING(chan, 0);
OUT_RING(chan, 1);
OUT_RING(chan, ~0);
OUT_RING(chan, ~0);
OUT_RING(chan, ~0);
OUT_RING(chan, ~0);
BEGIN_RING(chan, sub, 0x0000, 1);
OUT_RING(chan, NvClipRect);
BEGIN_RING(chan, sub, 0x0300, 2);
OUT_RING(chan, 0);
OUT_RING(chan, (info->var.yres_virtual << 16) | info->var.xres_virtual);
BEGIN_RING(chan, NvSubImageBlit, 0x0000, 1);
OUT_RING(chan, NvImageBlit);
BEGIN_RING(chan, NvSubImageBlit, 0x019c, 1);
OUT_RING(chan, NvCtxSurf2D);
BEGIN_RING(chan, NvSubImageBlit, 0x02fc, 1);
OUT_RING(chan, 3);
BEGIN_RING(chan, NvSubGdiRect, 0x0000, 1);
OUT_RING(chan, NvGdiRect);
BEGIN_RING(chan, NvSubGdiRect, 0x0198, 1);
OUT_RING(chan, NvCtxSurf2D);
BEGIN_RING(chan, NvSubGdiRect, 0x0188, 2);
OUT_RING(chan, NvImagePatt);
OUT_RING(chan, NvRop);
BEGIN_RING(chan, NvSubGdiRect, 0x0304, 1);
OUT_RING(chan, 1);
BEGIN_RING(chan, NvSubGdiRect, 0x0300, 1);
OUT_RING(chan, rect_fmt);
BEGIN_RING(chan, NvSubGdiRect, 0x02fc, 1);
OUT_RING(chan, 3);
FIRE_RING(chan);
return 0;
}
Reference in a new issue View git blame Copy permalink