amdgpu: add amdgpu_query_sw_info for querying high bits of 32-bit address space

Reviewed-by: Christian König <christian.koenig@amd.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/amdgpu/amdgpu_device.c b/amdgpu/amdgpu_device.c
index f34e27a9..6ee25a9e 100644
--- a/amdgpu/amdgpu_device.c
+++ b/amdgpu/amdgpu_device.c
@@ -275,6 +275,7 @@ int amdgpu_device_initialize(int fd,
         max = MIN2(max, (start & ~0xffffffffULL) + 0x100000000ULL);
         amdgpu_vamgr_init(&dev->vamgr_32, start, max,
                           dev->dev_info.virtual_address_alignment);
+        dev->address32_hi = start >> 32;
 
         start = max;
         if (dev->dev_info.high_va_offset && dev->dev_info.high_va_max)
@@ -312,3 +313,16 @@ const char *amdgpu_get_marketing_name(amdgpu_device_handle dev)
 {
         return dev->marketing_name;
 }
+
+int amdgpu_query_sw_info(amdgpu_device_handle dev, enum amdgpu_sw_info info,
+                         void *value)
+{
+        uint32_t *val32 = (uint32_t*)value;
+
+        switch (info) {
+        case amdgpu_sw_info_address32_hi:
+                *val32 = dev->address32_hi;
+                return 0;
+        }
+        return -EINVAL;
+}