video: tegra: nvmap: Add NVMAP_IOC_GET_AVAILABLE_HEAPS ioctl

This new ioctl can be used to query which heaps are
available on a particular platform.

bug 1885017

Change-Id: Ib21bca63a419972c596e2a5ebc5bee3b35abef00
Signed-off-by: Sri Krishna chowdary <schowdary@nvidia.com>
Reviewed-on: http://git-master/r/1318720
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/nvmap.h b/include/linux/nvmap.h
index c133880d2..dc188087c 100644
--- a/include/linux/nvmap.h
+++ b/include/linux/nvmap.h
@@ -304,6 +304,10 @@ struct nvmap_set_tag_label {
         __u64 addr;             /* in: pointer to label or NULL to remove */
 };
 
+struct nvmap_available_heaps {
+        __u64 heaps;            /* heaps bitmask */
+};
+
 #define NVMAP_IOC_MAGIC 'N'
 
 /* Creates a new memory handle. On input, the argument is the size of the new
@@ -389,6 +393,9 @@ struct nvmap_set_tag_label {
 /* Define a label for allocation tag */
 #define NVMAP_IOC_SET_TAG_LABEL _IOW(NVMAP_IOC_MAGIC, 24, struct nvmap_set_tag_label)
 
+#define NVMAP_IOC_GET_AVAILABLE_HEAPS \
+        _IOR(NVMAP_IOC_MAGIC, 25, struct nvmap_available_heaps)
+
 /* START of T124 IOCTLS */
 /* Actually allocates memory for the specified handle, with kind */
 #define NVMAP_IOC_ALLOC_KIND _IOW(NVMAP_IOC_MAGIC, 100, struct nvmap_alloc_kind_handle)