lib/igt_gt: Document and consolidate

Also move forcewake and stop_rings code from igt_debugfs to igt_gt
since it fits better. And move the hang injection fork helpers from
igt_aux to igt_gt, too.

Also push the intel_gen call into igt_hang_ring while at it.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

tests/drv_hangman.c

@@ -34,7 +34,7 @@
 #include "intel_chipset.h"
 #include "drmtest.h"
 #include "igt_aux.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 #include "ioctl_wrappers.h"
 
 #ifndef I915_PARAM_CMD_PARSER_VERSION

tests/drv_suspend.c

@@ -39,7 +39,7 @@
 
 #include "ioctl_wrappers.h"
 #include "drmtest.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 #include "igt_aux.h"
 
 #define OBJECT_SIZE (16*1024*1024)

tests/gem_concurrent_blit.c

@@ -464,12 +464,12 @@ static struct igt_hang_ring no_hang(void)
 
 static struct igt_hang_ring bcs_hang(void)
 {
-	return igt_hang_ring(fd, gen, I915_EXEC_BLT);
+	return igt_hang_ring(fd, I915_EXEC_BLT);
 }
 
 static struct igt_hang_ring rcs_hang(void)
 {
-	return igt_hang_ring(fd, gen, I915_EXEC_RENDER);
+	return igt_hang_ring(fd, I915_EXEC_RENDER);
 }
 
 static void hang_require(void)

tests/gem_ctx_exec.c

@@ -46,7 +46,7 @@
 #include "ioctl_wrappers.h"
 #include "drmtest.h"
 #include "igt_aux.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 
 IGT_TEST_DESCRIPTION("Test basic context switch functionality.");
 

tests/gem_evict_alignment.c

@@ -48,6 +48,7 @@
 #include "drmtest.h"
 #include "intel_chipset.h"
 #include "igt_aux.h"
+#include "igt_gt.h"
 
 IGT_TEST_DESCRIPTION("Run a couple of big batches to force the unbind on"
 		     " misalignment code.");

tests/gem_evict_everything.c

@@ -45,6 +45,7 @@
 #include "ioctl_wrappers.h"
 #include "drmtest.h"
 #include "intel_chipset.h"
+#include "igt_gt.h"
 
 #include "eviction_common.c"
 

tests/gem_pread_after_blit.c

@@ -132,7 +132,7 @@ static struct igt_hang_ring no_hang(int fd)
 
 static struct igt_hang_ring bcs_hang(int fd)
 {
-	return igt_hang_ring(fd, batch->gen, batch->gen >= 6 ? I915_EXEC_BLT : I915_EXEC_DEFAULT);
+	return igt_hang_ring(fd, batch->gen >= 6 ? I915_EXEC_BLT : I915_EXEC_DEFAULT);
 }
 
 static void do_test(int fd, int cache_level,

tests/gem_reloc_vs_gpu.c

@@ -198,7 +198,7 @@ static struct igt_hang_ring no_hang(int fd)
 
 static struct igt_hang_ring bcs_hang(int fd)
 {
-	return igt_hang_ring(fd, batch->gen, I915_EXEC_BLT);
+	return igt_hang_ring(fd, I915_EXEC_BLT);
 }
 
 static void do_test(int fd, bool faulting_reloc,

tests/gem_reset_stats.c

@@ -42,7 +42,7 @@
 
 #include "ioctl_wrappers.h"
 #include "drmtest.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 #include "intel_chipset.h"
 #include "intel_io.h"
 #include "igt_aux.h"

tests/gem_workarounds.c

@@ -42,7 +42,7 @@
 
 #include "ioctl_wrappers.h"
 #include "drmtest.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 #include "igt_aux.h"
 #include "intel_chipset.h"
 #include "intel_io.h"

tests/kms_flip.c

@@ -48,7 +48,7 @@
 #include "intel_batchbuffer.h"
 #include "igt_kms.h"
 #include "igt_aux.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 
 #define TEST_DPMS		(1 << 0)
 #define TEST_WITH_DUMMY_BCS	(1 << 1)

tests/kms_pipe_crc_basic.c

@@ -28,7 +28,7 @@
 #include <string.h>
 
 #include "drmtest.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 #include "igt_kms.h"
 #include "igt_aux.h"
 #include "ioctl_wrappers.h"

tests/pm_rpm.c

@@ -49,7 +49,7 @@
 #include "ioctl_wrappers.h"
 #include "igt_aux.h"
 #include "igt_kms.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 
 /* One day, this will be on your libdrm. */
 #define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2

tests/pm_rps.c

@@ -42,7 +42,7 @@
 #include "intel_bufmgr.h"
 #include "intel_batchbuffer.h"
 #include "intel_chipset.h"
-#include "igt_debugfs.h"
+#include "igt_gt.h"
 #include "ioctl_wrappers.h"
 
 static int drm_fd;