On Tue, Dec 18, 2012 at 10:31:27AM -0800, Ben Widawsky wrote:
> The iomapping of the register region has historically been a uint32_t
> for the obvious reason that our PTE size was always 4b. In the future
> however, we cannot make this assumption.
>
> By making the type void, it makes the upcoming pointer math we will do
> much easier, and hopefully gives the compiler opportunities to warn us
> when we do stupid things.
>
> v2: Cast to __iomem, caught by Ville
>
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 2 +-
> drivers/gpu/drm/i915/i915_gem_gtt.c | 5 +++--
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 49f465a..90dfbd5 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -800,7 +800,7 @@ typedef struct drm_i915_private {
> unsigned long stolen_base; /* limited to low memory (32-bit) */
>
> /** "Graphics Stolen Memory" holds the global PTEs */
> - uint32_t __iomem *gsm;
> + void __iomem *gsm;
>
> struct io_mapping *gtt_mapping;
> phys_addr_t gtt_base_addr;
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index b4c1e34..a52e784 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -290,7 +290,7 @@ void i915_gem_init_ppgtt(struct drm_device *dev)
> return;
>
>
> - pd_addr = dev_priv->mm.gsm + ppgtt->pd_offset/sizeof(gtt_pte_t);
> + pd_addr = (gtt_pte_t *)dev_priv->mm.gsm + ppgtt->pd_offset/sizeof(gtt_pte_t);
This cast is still missing __iomem.
> for (i = 0; i < ppgtt->num_pd_entries; i++) {
> dma_addr_t pt_addr;
>
> @@ -432,7 +432,8 @@ static void gen6_ggtt_bind_object(struct drm_i915_gem_object *obj,
> struct scatterlist *sg = st->sgl;
> const int first_entry = obj->gtt_space->start >> PAGE_SHIFT;
> const int max_entries = dev_priv->mm.gtt->gtt_total_entries - first_entry;
> - gtt_pte_t __iomem *gtt_entries = dev_priv->mm.gsm + first_entry;
> + gtt_pte_t __iomem *gtt_entries =
> + (gtt_pte_t __iomem *)dev_priv->mm.gsm + first_entry;
> int unused, i = 0;
> unsigned int len, m = 0;
> dma_addr_t addr;
> --
> 1.8.0.1
>
> _______________________________________________
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> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrj?l?
Intel OTC
