video: tegra: nvmap: add NvRmMemQueryHeapParams

Add NvRmMemQueryHeapParams to return Heap params
such as total size, free size..

Bug 200555794
Bug 200565027
Bug 200564460

Change-Id: I7e002a3264ffe2df8c95a037f157482dbd78bbff
Signed-off-by: Puneet Saxena <puneets@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2209555
(cherry picked from commit e5039360df4e5695fb388f7302b8d8670094190d)
Reviewed-on: https://git-master.nvidia.com/r/2232110
Reviewed-by: Sandipan Patra <spatra@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Tested-by: Sandipan Patra <spatra@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/include/uapi/linux/nvmap.h b/include/uapi/linux/nvmap.h
index 2b2d12a60..667dcdc8e 100644
--- a/include/uapi/linux/nvmap.h
+++ b/include/uapi/linux/nvmap.h
@@ -263,6 +263,18 @@ struct nvmap_heap_size {
         __u64 size;
 };
 
+/**
+ * Struct used while querying heap parameters
+ */
+struct nvmap_query_heap_params {
+        __u32 heap_mask;
+        __u32 flags;
+        __u8 contig;
+        __u64 total;
+        __u64 free;
+        __u64 largest_free_block;
+};
+
 #define NVMAP_IOC_MAGIC 'N'
 
 /* Creates a new memory handle. On input, the argument is the size of the new
@@ -371,6 +383,10 @@ struct nvmap_heap_size {
 /* Allocate seperate memory for VPR */
 #define NVMAP_IOC_VPR_FLOOR_SIZE _IOW(NVMAP_IOC_MAGIC, 102, __u32)
 
-#define NVMAP_IOC_MAXNR (_IOC_NR(NVMAP_IOC_VPR_FLOOR_SIZE))
+/* Get heap parameters such as total and frre size */
+#define NVMAP_IOC_QUERY_HEAP_PARAMS _IOR(NVMAP_IOC_MAGIC, 105, \
+                struct nvmap_query_heap_params)
+
+#define NVMAP_IOC_MAXNR (_IOC_NR(NVMAP_IOC_QUERY_HEAP_PARAMS))
 
 #endif /* __UAPI_LINUX_NVMAP_H */