Re: [PATCH 08/49] drm/i915/bxt: Broxton DDB is 512 blocks

Antti Koskipää
2015-03-23T10:23:02Z

Reviewed-by: Antti Koskipää <antti.koskipaa@linux.intel.com>

On 03/17/2015 11:39 AM, Imre Deak wrote:
> From: Damien Lespiau <damien.lespiau@intel.com>
>
> Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 288c9d2..b89ab4d 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -2538,6 +2538,7 @@ static bool ilk_disable_lp_wm(struct drm_device *dev)
> */
>
> #define SKL_DDB_SIZE 896 /* in blocks */
> +#define BXT_DDB_SIZE 512
>
> static void
> skl_ddb_get_pipe_allocation_limits(struct drm_device *dev,
> @@ -2556,7 +2557,10 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device *dev,
> return;
> }
>
> - ddb_size = SKL_DDB_SIZE;
> + if (IS_BROXTON(dev))
> + ddb_size = BXT_DDB_SIZE;
> + else
> + ddb_size = SKL_DDB_SIZE;
>
> ddb_size -= 4; /* 4 blocks for bypass path allocation */