| Message ID | 20180208060017.30780-1-david1.zhou@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Feb 08, 2018 at 02:00:15PM +0800, Chunming Zhou wrote: > it will be used to check if the driver needs swiotlb > > Change-Id: Idbe47af8f12032d4803bb3d47273e807f19169c3 > Signed-off-by: Chunming Zhou <david1.zhou@amd.com> > --- > include/drm/drm_cache.h | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h > index beab0f0d0cfb..442c9ba63d03 100644 > --- a/include/drm/drm_cache.h > +++ b/include/drm/drm_cache.h > @@ -39,6 +39,19 @@ void drm_clflush_pages(struct page *pages[], unsigned long num_pages); > void drm_clflush_sg(struct sg_table *st); > void drm_clflush_virt_range(void *addr, unsigned long length); > > +static inline u64 drm_get_max_iomem(void) > +{ > + struct resource *tmp; > + u64 max_iomem = 0; > + > + for (tmp = iomem_resource.child; tmp; tmp = tmp->sibling) { > + max_iomem = max(max_iomem, tmp->end); > + } > + > + return max_iomem; > +} linux-next noticed a compile warning on this (on some platforms, the max_iomem has the wrong integer size I think). Also, drm_memory.c is a bit a grab-bag of legacy stuff, not sure this is the best place. We're also lacking kerneldoc (plus include stanza) for this new function. Can you pls fix all that in a follow-up patch? Thanks, Daniel > + > + > static inline bool drm_arch_can_wc_memory(void) > { > #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE) > -- > 2.14.1 > > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel
diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h index beab0f0d0cfb..442c9ba63d03 100644 --- a/include/drm/drm_cache.h +++ b/include/drm/drm_cache.h @@ -39,6 +39,19 @@ void drm_clflush_pages(struct page *pages[], unsigned long num_pages); void drm_clflush_sg(struct sg_table *st); void drm_clflush_virt_range(void *addr, unsigned long length); +static inline u64 drm_get_max_iomem(void) +{ + struct resource *tmp; + u64 max_iomem = 0; + + for (tmp = iomem_resource.child; tmp; tmp = tmp->sibling) { + max_iomem = max(max_iomem, tmp->end); + } + + return max_iomem; +} + + static inline bool drm_arch_can_wc_memory(void) { #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
it will be used to check if the driver needs swiotlb Change-Id: Idbe47af8f12032d4803bb3d47273e807f19169c3 Signed-off-by: Chunming Zhou <david1.zhou@amd.com> --- include/drm/drm_cache.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)