[ARM] 3370/2: ep93xx: add crunch support

Patch from Lennert Buytenhek

Add the necessary kernel bits for crunch task switching.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 14 insertions, 0 deletions

diff --git a/include/asm-arm/fpstate.h b/include/asm-arm/fpstate.h
index 132c3c5628b2..6af4e6bd1290 100644
--- a/include/asm-arm/fpstate.h
+++ b/include/asm-arm/fpstate.h
@@ -72,6 +72,14 @@ union fp_state {
 
 #define FP_SIZE (sizeof(union fp_state) / sizeof(int))
 
+struct crunch_state {
+        unsigned int    mvdx[16][2];
+        unsigned int    mvax[4][3];
+        unsigned int    dspsc[2];
+};
+
+#define CRUNCH_SIZE     sizeof(struct crunch_state)
+
 #endif
 
 #endif
diff --git a/include/asm-arm/thread_info.h b/include/asm-arm/thread_info.h
index cfbccb63c67b..c46b5c84275f 100644
--- a/include/asm-arm/thread_info.h
+++ b/include/asm-arm/thread_info.h
@@ -59,6 +59,7 @@ struct thread_info {
         struct cpu_context_save cpu_context;    /* cpu context */
         __u8                    used_cp[16];    /* thread used copro */
         unsigned long           tp_value;
+        struct crunch_state     crunchstate;
         union fp_state          fpstate __attribute__((aligned(8)));
         union vfp_state         vfpstate;
         struct restart_block    restart_block;
@@ -101,6 +102,11 @@ extern void free_thread_info(struct thread_info *);
 #define thread_saved_fp(tsk)    \
         ((unsigned long)(task_thread_info(tsk)->cpu_context.fp))
 
+extern void crunch_task_disable(struct thread_info *);
+extern void crunch_task_copy(struct thread_info *, void *);
+extern void crunch_task_restore(struct thread_info *, void *);
+extern void crunch_task_release(struct thread_info *);
+
 extern void iwmmxt_task_disable(struct thread_info *);
 extern void iwmmxt_task_copy(struct thread_info *, void *);
 extern void iwmmxt_task_restore(struct thread_info *, void *);