Simplify testing sysfs/engines by providing a convenience routine that
iterates over each engine, calling a igt_dynamic routine.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
lib/i915/gem_engine_topology.c | 48 ++++++++++++++++++++++++++++++++++
lib/i915/gem_engine_topology.h | 3 +++
2 files changed, 51 insertions(+)
diff --git a/lib/i915/gem_engine_topology.c b/lib/i915/gem_engine_topology.c
index 6eca28236..53abb29fa 100644
--- a/lib/i915/gem_engine_topology.c
+++ b/lib/i915/gem_engine_topology.c
@@ -22,6 +22,8 @@
*/
#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
#include <unistd.h>
#include "drmtest.h"
@@ -413,3 +415,49 @@ uint32_t gem_engine_mmio_base(int i915, const char *engine)
return mmio;
}
+
+void dyn_sysfs_engines(int i915, int engines, const char *file,
+ void (*test)(int, int))
+{
+ char buf[512];
+ int len;
+
+ lseek(engines, 0, SEEK_SET);
+ while ((len = syscall(SYS_getdents64, engines, buf, sizeof(buf))) > 0) {
+ void *ptr = buf;
+
+ while (len) {
+ struct linux_dirent64 {
+ ino64_t d_ino;
+ off64_t d_off;
+ unsigned short d_reclen;
+ unsigned char d_type;
+ char d_name[];
+ } *de = ptr;
+ char *name;
+ int engine;
+
+ ptr += de->d_reclen;
+ len -= de->d_reclen;
+
+ engine = openat(engines, de->d_name, O_RDONLY);
+ name = igt_sysfs_get(engine, "name");
+ if (!name) {
+ close(engine);
+ continue;
+ }
+
+ igt_dynamic(name) {
+ if (file) {
+ struct stat st;
+
+ igt_require(fstatat(engine, file, &st, 0) == 0);
+ }
+
+ test(i915, engine);
+ }
+
+ close(engine);
+ }
+ }
+}
diff --git a/lib/i915/gem_engine_topology.h b/lib/i915/gem_engine_topology.h
index 219c84b72..b624d607e 100644
--- a/lib/i915/gem_engine_topology.h
+++ b/lib/i915/gem_engine_topology.h
@@ -80,4 +80,7 @@ int gem_engine_property_scanf(int i915, const char *engine, const char *attr,
const char *fmt, ...);
uint32_t gem_engine_mmio_base(int i915, const char *engine);
+void dyn_sysfs_engines(int i915, int engines, const char *file,
+ void (*test)(int i915, int engine));
+
#endif /* GEM_ENGINE_TOPOLOGY_H */
--
2.25.1
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