Is this a bug in radeon driver (secondlife hang ?)

Hi, guys,

Did someone try secondlife on radeon cards ?

I am porting dri radeon driver to solaris. In order to
enable secondlife to run on Solaris x86. I have to make a
small change in the routine radeon_cp_dispatch_texture() of
radeon kernel driver.

At the beginning of starting, secondlife needs to load a
1024*1024 RGBA texture, which uses up all texture buffers
so that radeon_cp_dispatch_texture()/ ioctl DRM_RADEON_TEXTURE
always returns EAGAIN.

It seems that we should add a COMMIT_RING() at the end
of the following code so as to GPU kick some buffers back
to us, see:

static int radeon_cp_dispatch_texture( ...)
{

....
BEGIN_RING(9);
OUT_RING(CP_PACKET3(RADEON_CNTL_BITBLT_MULTI, 5));
OUT_RING(RADEON_GMC_SRC_PITCH_OFFSET_CNTL |
RADEON_GMC_DST_PITCH_OFFSET_CNTL |
RADEON_GMC_BRUSH_NONE |
(format << 8) |
RADEON_GMC_SRC_DATATYPE_COLOR |
RADEON_ROP3_S |
RADEON_DP_SRC_SOURCE_MEMORY |
RADEON_GMC_CLR_CMP_CNTL_DIS | RADEON_GMC_WR_MSK_DIS);
OUT_RING((spitch << 22) | (offset >> 10));
OUT_RING((texpitch << 22) | (tex->offset >> 10));
OUT_RING(0);
OUT_RING((image->x << 16) | image->y);
OUT_RING((image->width << 16) | height);
RADEON_WAIT_UNTIL_2D_IDLE();
ADVANCE_RING();
COMMIT_RING(); <-----------------------------Added this ????
}



How do you think about it ?




-minskey

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