gpu: nvgpu: support kernel-3.10 version

Make necessary changes to support nvgpu on kernel-3.10

This includes below changes
- PROBE_PREFER_ASYNCHRONOUS is defined only for K3.10
- Fence handling and struct sync_fence is different between
  K3.10 and K3.18
- variable status in struct sync_fence is atomic on K3.18
  whereas it is int on K3.10
- if SOC == T132, set soc_name = "tegra13x"
- ioremap_cache() is not defined on K3.10 ARM versions,
  hence use ioremap_cached()

Bug 200188753

Change-Id: I18d77eb1404e15054e8510d67c9a61c0f1883e2b
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1121092
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
index f41ca767..1bda5902 100644
--- a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
@@ -15,6 +15,7 @@
 
 #include <linux/gk20a.h>
 #include <linux/file.h>
+#include <linux/version.h>
 
 #include "gk20a.h"
 #include "semaphore_gk20a.h"
@@ -153,10 +154,17 @@ struct gk20a_fence *gk20a_fence_from_semaphore(
         struct sync_fence *sync_fence = NULL;
 
 #ifdef CONFIG_SYNC
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
+        sync_fence = gk20a_sync_fence_create(timeline, semaphore,
+                                             dependency, "f-gk20a-0x%04llx",
+                                             ((uintptr_t)(void *)semaphore->value) &
+                                             0xffff);
+#else
         sync_fence = gk20a_sync_fence_create(timeline, semaphore,
                                              dependency, "f-gk20a-0x%04llx",
                                              ((u64)(void *)semaphore->value) &
                                              0xffff);
+#endif
         if (!sync_fence)
                 return NULL;
 #endif