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, 16 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index 30bb6efe..025b000e 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/gk20a.h>
+#include <linux/version.h>
 
 #include "channel_sync_gk20a.h"
 #include "gk20a.h"
@@ -93,10 +94,12 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
         int i;
         int num_wait_cmds;
         struct sync_fence *sync_fence;
+        struct sync_pt *pt;
         struct priv_cmd_entry *wait_cmd = NULL;
         struct gk20a_channel_syncpt *sp =
                 container_of(s, struct gk20a_channel_syncpt, ops);
         struct channel_gk20a *c = sp->c;
+        u32 wait_id;
         int err = 0;
 
         sync_fence = nvhost_sync_fdget(fd);
@@ -104,9 +107,13 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
                 return -EINVAL;
 
         /* validate syncpt ids */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
+        list_for_each_entry(pt, &sync_fence->pt_list_head, pt_list) {
+#else
         for (i = 0; i < sync_fence->num_fences; i++) {
-                struct sync_pt *pt = sync_pt_from_fence(sync_fence->cbs[i].sync_pt);
-                u32 wait_id = nvhost_sync_pt_id(pt);
+                pt = sync_pt_from_fence(sync_fence->cbs[i].sync_pt);
+#endif
+                wait_id = nvhost_sync_pt_id(pt);
                 if (!wait_id || !nvhost_syncpt_is_valid_pt_ext(sp->host1x_pdev,
                                         wait_id)) {
                         sync_fence_put(sync_fence);
@@ -129,9 +136,13 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
         }
 
         i = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
+        list_for_each_entry(pt, &sync_fence->pt_list_head, pt_list) {
+#else
         for (i = 0; i < sync_fence->num_fences; i++) {
                 struct fence *f = sync_fence->cbs[i].sync_pt;
                 struct sync_pt *pt = sync_pt_from_fence(f);
+#endif
                 u32 wait_id = nvhost_sync_pt_id(pt);
                 u32 wait_value = nvhost_sync_pt_thresh(pt);
 
@@ -144,6 +155,9 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
                 } else
                         add_wait_cmd(&wait_cmd->ptr[i * 4], wait_id,
                                         wait_value);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
+                i++;
+#endif
         }
         WARN_ON(i != num_wait_cmds);
         sync_fence_put(sync_fence);