On Mon, 22 Oct 2012 18:34:07 -0700
Ben Widawsky <ben at bwidawsk.net> wrote:
> Some subsequent commits will need to know what generation we're running
> on to do different pte encoding for the ppgtt. Since it's not much
> hassle or overhead to store it in the ppgtt structure, do that.
>
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 1 +
> drivers/gpu/drm/i915/i915_gem_gtt.c | 5 +++--
> 2 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index af0e97e..bf628c4 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -344,6 +344,7 @@ struct intel_device_info {
> #define I915_PPGTT_PD_ENTRIES 512
> #define I915_PPGTT_PT_ENTRIES 1024
> struct i915_hw_ppgtt {
> + struct drm_device *dev;
> unsigned num_pd_entries;
> struct page **pt_pages;
> uint32_t pd_offset;
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index 5751ad2..2b75028 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -78,6 +78,7 @@ int i915_gem_init_aliasing_ppgtt(struct drm_device *dev)
> if (!ppgtt)
> return ret;
>
> + ppgtt->dev = dev;
> ppgtt->num_pd_entries = I915_PPGTT_PD_ENTRIES;
> ppgtt->pt_pages = kzalloc(sizeof(struct page *)*ppgtt->num_pd_entries,
> GFP_KERNEL);
> @@ -219,7 +220,7 @@ void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
> switch (cache_level) {
> case I915_CACHE_LLC_MLC:
> /* Haswell doesn't set L3 this way */
> - if (IS_HASWELL(obj->base.dev))
> + if (IS_HASWELL(ppgtt->dev))
> pte_flags |= GEN6_PTE_CACHE_LLC;
> else
> pte_flags |= GEN6_PTE_CACHE_LLC_MLC;
> @@ -228,7 +229,7 @@ void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
> pte_flags |= GEN6_PTE_CACHE_LLC;
> break;
> case I915_CACHE_NONE:
> - if (IS_HASWELL(obj->base.dev))
> + if (IS_HASWELL(ppgtt->dev))
> pte_flags |= HSW_PTE_UNCACHED;
> else
> pte_flags |= GEN6_PTE_UNCACHED;
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
It would be nice if you did some penance for bloating our structures a
little though, maybe by removing at least 3 fields from our dev_priv
struct? :)
--
Jesse Barnes, Intel Open Source Technology Center
