On Wed, 26 Mar 2014, Kenneth Graunke <kenneth@xxxxxxxxxxxxx> wrote:
> Mesa needs to be able to write OACONTROL in order to expose the
> Observability Architecture's performance counters via OpenGL.
>
> Signed-off-by: Kenneth Graunke <kenneth@xxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_cmd_parser.c | 1 +
> drivers/gpu/drm/i915/i915_reg.h | 2 ++
> 2 files changed, 3 insertions(+)
>
> This patch needs to go before
>
> commit 6d42f94084b8c69813d7ecd0466c33fe561bf127
> Author: Brad Volkin <bradley.d.volkin@xxxxxxxxx>
> Date: Tue Feb 18 10:15:57 2014 -0800
>
> drm/i915: Enable command parsing by default
>
> in whatever branch gets submitted to Dave Airlie. Or, that commit needs
> to be reverted. Otherwise, every OpenGL program will abort. Examples
> of programs that abort include GNOME, KDE, Firefox, and glxgears.
>
> diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
> index bae7c2f..d4a50b9 100644
> --- a/drivers/gpu/drm/i915/i915_cmd_parser.c
> +++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
> @@ -415,6 +415,7 @@ static const u32 gen7_render_regs[] = {
> GEN7_SO_WRITE_OFFSET(1),
> GEN7_SO_WRITE_OFFSET(2),
> GEN7_SO_WRITE_OFFSET(3),
> + OACONTROL,
Comment above gen7_render_regs array:
* Register whitelists, sorted by increasing register offset.
You'll get a DRM_ERROR for this.
Daniel, naughty naughty for pushing this already!
BR,
Jani.
> };
>
> static const u32 gen7_blt_regs[] = {
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 9f9e2b7..0ebc20d 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -427,6 +427,8 @@
> /* There are the 4 64-bit counter registers, one for each stream output */
> #define GEN7_SO_NUM_PRIMS_WRITTEN(n) (0x5200 + (n) * 8)
>
> +#define OACONTROL 0x2360
> +
> #define _GEN7_PIPEA_DE_LOAD_SL 0x70068
> #define _GEN7_PIPEB_DE_LOAD_SL 0x71068
> #define GEN7_PIPE_DE_LOAD_SL(pipe) _PIPE(pipe, \
> --
> 1.9.0
>
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--
Jani Nikula, Intel Open Source Technology Center
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