Initiali support for CWSR on thunk

1. Add IOCTL defines to set trap handler
2. Add control stack size information on create queue argument.
3. Increase the total save&restore area size for carrizo to include the control stack size.

Signed-off-by: Shaoyun Liu <Shaoyun.liu@amd.com>

Change-Id: Iccf15e073b7db2519e96e7f7b46a89d57ab9a4df

include/linux/kfd_ioctl.h

@@ -58,7 +58,8 @@ struct kfd_ioctl_create_queue_args {
 	uint64_t eop_buffer_address;	/* to KFD */
 	uint64_t eop_buffer_size;	/* to KFD */
 	uint64_t ctx_save_restore_address; /* to KFD */
-	uint64_t ctx_save_restore_size;	/* to KFD */
+	uint32_t ctx_save_restore_size;	/* to KFD */
+	uint32_t ctl_stack_size; 	/* to KFD */
 };
 
 struct kfd_ioctl_destroy_queue_args {
@@ -95,6 +96,13 @@ struct kfd_ioctl_set_memory_policy_args {
 	uint32_t pad;
 };
 
+struct kfd_ioctl_set_trap_handler_args {
+	uint64_t tba_addr;
+	uint64_t tma_addr;
+	uint32_t gpu_id;			/* to KFD */
+	uint32_t pad;
+};
+
 /*
  * All counters are monotonic. They are used for profiling of compute jobs.
  * The profiling is done by userspace.
@@ -379,7 +387,10 @@ struct kfd_ioctl_alloc_memory_of_gpu_new_args {
 		AMDKFD_IOWR(0x19, struct kfd_ioctl_alloc_memory_of_gpu_new_args)
 
 
+#define AMDKFD_IOC_SET_TRAP_HANDLER		\
+		AMDKFD_IOW(0x1a, struct kfd_ioctl_set_trap_handler_args)
+
 #define AMDKFD_COMMAND_START		0x01
-#define AMDKFD_COMMAND_END		0x20
+#define AMDKFD_COMMAND_END		0x1b
 
 #endif