diff options
author | Alexandre Courbot <acourbot@nvidia.com> | 2015-02-20 18:23:02 +0900 |
---|---|---|
committer | Ben Skeggs <bskeggs@redhat.com> | 2015-03-17 09:45:11 +1000 |
commit | 3bc5960645a5d152e74ee92582b0ce3ed0f8cf26 (patch) | |
tree | 084962d99f37b8c2bec27263c144b24fe440ff99 /lib/include/nvif | |
parent | d588b16f4b08c9e858531bac7f5278d911cda3a0 (diff) | |
download | nouveau-3bc5960645a5d152e74ee92582b0ce3ed0f8cf26.tar.gz |
instmem/gk20a: use DMA attributes
instmem for GK20A is allocated using dma_alloc_coherent(), which
provides us with a coherent CPU mapping that we never use because
instmem objects are accessed through PRAMIN. Switch to
dma_alloc_attrs() which gives us the option to dismiss that CPU mapping
and free up some CPU virtual space.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'lib/include/nvif')
-rw-r--r-- | lib/include/nvif/os.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/include/nvif/os.h b/lib/include/nvif/os.h index f6391a58f..b4d307e3a 100644 --- a/lib/include/nvif/os.h +++ b/lib/include/nvif/os.h @@ -683,6 +683,37 @@ dma_free_coherent(struct device *dev, size_t sz, void *vaddr, dma_addr_t bus) { } +enum dma_attr { + DMA_ATTR_WRITE_BARRIER, + DMA_ATTR_WEAK_ORDERING, + DMA_ATTR_WRITE_COMBINE, + DMA_ATTR_NON_CONSISTENT, + DMA_ATTR_NO_KERNEL_MAPPING, + DMA_ATTR_SKIP_CPU_SYNC, + DMA_ATTR_FORCE_CONTIGUOUS, + DMA_ATTR_MAX, +}; + +struct dma_attrs { +}; + +static inline void init_dma_attrs(struct dma_attrs *attrs) {} +static inline void dma_set_attr(enum dma_attr attr, struct dma_attrs *attrs) {} + +static inline void * +dma_alloc_attrs(struct device *dev, size_t sz, dma_addr_t *hdl, gfp_t gfp, + struct dma_attrs *attrs) +{ + return NULL; +} + +static inline void +dma_free_attrs(struct device *dev, size_t sz, void *vaddr, dma_addr_t bus, + struct dma_attrs *attrs) +{ +} + + /****************************************************************************** * PCI *****************************************************************************/ |