[igt-dev] [PATCH i-g-t v2 5/8] lib: Kill drm_get_card()

[Michał Winiarski]

It's not operating on FD, and we've provided a nice reimplementation
that does. Let's use it instead.

Signed-off-by: Michał Winiarski <michal.winiarski at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 lib/drmtest.c               | 40 -------------------------------------
 lib/drmtest.h               |  1 -
 tests/i915/i915_suspend.c   | 17 ++++++++--------
 tools/intel_gpu_frequency.c |  9 ++++++---
 4 files changed, 15 insertions(+), 52 deletions(-)

diff --git a/lib/drmtest.c b/lib/drmtest.c
index 6506791b..25eeab88 100644
--- a/lib/drmtest.c
+++ b/lib/drmtest.c
@@ -177,46 +177,6 @@ void gem_quiescent_gpu(int fd)
 			    DROP_ACTIVE | DROP_RETIRE | DROP_IDLE | DROP_FREED);
 }
 
-/**
- * drm_get_card:
- *
- * Get an i915 drm card index number for use in /dev or /sys. The minor index of
- * the legacy node is returned, not of the control or render node.
- *
- * Returns:
- * The i915 drm index or -1 on error
- */
-int drm_get_card(void)
-{
-	char *name;
-	int i, fd;
-
-	for (i = 0; i < 16; i++) {
-		int ret;
-
-		ret = asprintf(&name, "/dev/dri/card%u", i);
-		igt_assert(ret != -1);
-
-		fd = open(name, O_RDWR);
-		free(name);
-
-		if (fd == -1)
-			continue;
-
-		if (!is_i915_device(fd) || !has_known_intel_chipset(fd)) {
-			close(fd);
-			continue;
-		}
-
-		close(fd);
-		return i;
-	}
-
-	igt_skip("No intel gpu found\n");
-
-	return -1;
-}
-
 static int modprobe(const char *driver)
 {
 	return igt_kmod_load(driver, "");
diff --git a/lib/drmtest.h b/lib/drmtest.h
index ca347a71..f4401ac9 100644
--- a/lib/drmtest.h
+++ b/lib/drmtest.h
@@ -71,7 +71,6 @@ void __set_forced_driver(const char *name);
  */
 #define ALIGN(v, a) (((v) + (a)-1) & ~((a)-1))
 
-int drm_get_card(void);
 int drm_open_driver(int chipset);
 int drm_open_driver_master(int chipset);
 int drm_open_driver_render(int chipset);
diff --git a/tests/i915/i915_suspend.c b/tests/i915/i915_suspend.c
index cd7cf967..0d49fdcb 100644
--- a/tests/i915/i915_suspend.c
+++ b/tests/i915/i915_suspend.c
@@ -39,6 +39,7 @@
 
 #include <drm.h>
 
+#include "igt_device.h"
 
 #define OBJECT_SIZE (16*1024*1024)
 
@@ -101,7 +102,7 @@ test_fence_restore(int fd, bool tiled2untiled, bool hibernate)
 }
 
 static void
-test_debugfs_reader(bool hibernate)
+test_debugfs_reader(int fd, bool hibernate)
 {
 	struct igt_helper_process reader = {};
 	reader.use_SIGKILL = true;
@@ -112,7 +113,7 @@ test_debugfs_reader(bool hibernate)
 
 		snprintf(tmp, sizeof(tmp) - 1,
 			 "while true; do find %s/%i/ -type f ! -path \"*/crc/*\" | xargs cat > /dev/null 2>&1; done",
-			 dfs_base, drm_get_card());
+			 dfs_base, igt_device_get_card_index(fd));
 		igt_assert(execl("/bin/sh", "sh", "-c", tmp, (char *) NULL) != -1);
 	}
 
@@ -131,7 +132,7 @@ test_debugfs_reader(bool hibernate)
 }
 
 static void
-test_sysfs_reader(bool hibernate)
+test_sysfs_reader(int fd, bool hibernate)
 {
 	struct igt_helper_process reader = {};
 	reader.use_SIGKILL = true;
@@ -142,7 +143,7 @@ test_sysfs_reader(bool hibernate)
 
 		snprintf(tmp, sizeof(tmp) - 1,
 			 "while true; do find %s%i*/ -type f | xargs cat > /dev/null 2>&1; done",
-			 dfs_base, drm_get_card());
+			 dfs_base, igt_device_get_card_index(fd));
 		igt_assert(execl("/bin/sh", "sh", "-c", tmp, (char *) NULL) != -1);
 	}
 
@@ -212,10 +213,10 @@ igt_main
 		test_fence_restore(fd, false, false);
 
 	igt_subtest("debugfs-reader")
-		test_debugfs_reader(false);
+		test_debugfs_reader(fd, false);
 
 	igt_subtest("sysfs-reader")
-		test_sysfs_reader(false);
+		test_sysfs_reader(fd, false);
 
 	igt_subtest("shrink")
 		test_shrink(fd, SUSPEND_STATE_MEM);
@@ -230,10 +231,10 @@ igt_main
 		test_fence_restore(fd, false, true);
 
 	igt_subtest("debugfs-reader-hibernate")
-		test_debugfs_reader(true);
+		test_debugfs_reader(fd, true);
 
 	igt_subtest("sysfs-reader-hibernate")
-		test_sysfs_reader(true);
+		test_sysfs_reader(fd, true);
 
 	igt_subtest("forcewake-hibernate")
 		test_forcewake(fd, true);
diff --git a/tools/intel_gpu_frequency.c b/tools/intel_gpu_frequency.c
index 80786ad9..52b11a98 100644
--- a/tools/intel_gpu_frequency.c
+++ b/tools/intel_gpu_frequency.c
@@ -28,6 +28,7 @@
 #include <unistd.h>
 
 #include "drmtest.h"
+#include "igt_device.h"
 #include "intel_chipset.h"
 
 #define VERSION "1.0"
@@ -280,10 +281,12 @@ int main(int argc, char *argv[])
 {
 
 	bool write, fail, targets[MAX+1] = {false};
-	int i, try = 1, set_freq[MAX+1] = {0};
+	int i, fd, try = 1, set_freq[MAX+1] = {0};
 
-	devid = intel_get_drm_devid(drm_open_driver(DRIVER_INTEL));
-	device = drm_get_card();
+	fd = drm_open_driver(DRIVER_INTEL);
+	devid = intel_get_drm_devid(fd);
+	device = igt_device_get_card_index(fd);
+	close(fd);
 
 	write = parse(argc, argv, targets, ARRAY_SIZE(targets), set_freq);
 	fail = write;
-- 
2.20.1