tests: Extract ALIGN macro into a common header

Makes for a little bit less code duplication, especially since
it will be used from more callers in the future.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Brad Volkin <bradley.d.volkin@intel.com>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>

lib/drmtest.h

@@ -60,6 +60,15 @@ static inline void *igt_mmap64(void *addr, size_t length, int prot, int flags,
  */
 #define ARRAY_SIZE(arr) (sizeof(arr)/sizeof(arr[0]))
 
+/**
+ * ALIGN:
+ * @v: value to be aligned
+ * @a: alignment unit in bytes
+ *
+ * Macro to align a value @v to a specified unit @a.
+ */
+#define ALIGN(v, a) (((v) + (a)-1) & ~((a)-1))
+
 int drm_get_card(void);
 int drm_open_any(void);
 int drm_open_any_render(void);

lib/media_fill_gen7.c

@@ -4,10 +4,10 @@
 #include "media_fill.h"
 #include "gen7_media.h"
 #include "intel_reg.h"
+#include "drmtest.h"
 
 #include <assert.h>
 
-#define ALIGN(x, y) (((x) + (y)-1) & ~((y)-1))
 
 static const uint32_t media_kernel[][4] = {
 	{ 0x00400001, 0x20200231, 0x00000020, 0x00000000 },

lib/media_fill_gen8.c

@@ -4,10 +4,10 @@
 #include "media_fill.h"
 #include "gen8_media.h"
 #include "intel_reg.h"
+#include "drmtest.h"
 
 #include <assert.h>
 
-#define ALIGN(x, y) (((x) + (y)-1) & ~((y)-1))
 
 static const uint32_t media_kernel[][4] = {
 	{ 0x00400001, 0x20202288, 0x00000020, 0x00000000 },

lib/rendercopy_gen6.c

@@ -20,7 +20,6 @@
 #include "gen6_render.h"
 #include "intel_reg.h"
 
-#define ALIGN(x, y) (((x) + (y)-1) & ~((y)-1))
 #define VERTEX_SIZE (3*4)
 
 static const uint32_t ps_kernel_nomask_affine[][4] = {

lib/rendercopy_gen7.c

@@ -21,7 +21,6 @@
 #include "gen7_render.h"
 #include "intel_reg.h"
 
-#define ALIGN(x, y) (((x) + (y)-1) & ~((y)-1))
 
 static const uint32_t ps_kernel[][4] = {
 	{ 0x0080005a, 0x2e2077bd, 0x000000c0, 0x008d0040 },

lib/rendercopy_gen8.c

@@ -25,7 +25,6 @@
 
 #include <intel_aub.h>
 
-#define ALIGN(x, y) (((x) + (y)-1) & ~((y)-1))
 #define VERTEX_SIZE (3*4)
 
 #if DEBUG_RENDERCPY