[Lima] [PATCH i-g-t v2 2/3] lib/lima: Add lima helpers

[Erico Nunes]

Add initial gem helpers for lima tests, based on the panfrost ones.

Signed-off-by: Erico Nunes <nunes.erico at gmail.com>
---
 lib/igt_lima.c  | 97 +++++++++++++++++++++++++++++++++++++++++++++++++
 lib/igt_lima.h  | 26 +++++++++++++
 lib/meson.build |  1 +
 3 files changed, 124 insertions(+)
 create mode 100644 lib/igt_lima.c
 create mode 100644 lib/igt_lima.h

diff --git a/lib/igt_lima.c b/lib/igt_lima.c
new file mode 100644
index 00000000..0d0f3c80
--- /dev/null
+++ b/lib/igt_lima.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Erico Nunes
+ */
+
+#include <assert.h>
+#include <string.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+
+#include "drmtest.h"
+#include "igt_aux.h"
+#include "igt_core.h"
+#include "igt_lima.h"
+#include "ioctl_wrappers.h"
+#include "lima_drm.h"
+
+/**
+ * SECTION:igt_lima
+ * @short_description: LIMA support library
+ * @title: LIMA
+ * @include: igt.h
+ *
+ * This library provides various auxiliary helper functions for writing Lima
+ * tests.
+ */
+
+struct lima_bo *
+igt_lima_gem_new(int fd, size_t size)
+{
+	struct lima_bo *bo = calloc(1, sizeof(*bo));
+
+	struct drm_lima_gem_create create_bo = {
+		.size = size,
+		.flags = 0,
+	};
+
+	do_ioctl(fd, DRM_IOCTL_LIMA_GEM_CREATE, &create_bo);
+
+	bo->handle = create_bo.handle;
+	bo->size = size;
+	return bo;
+}
+
+void
+igt_lima_free_bo(int fd, struct lima_bo *bo)
+{
+	if (!bo)
+		return;
+
+	if (bo->map)
+		munmap(bo->map, bo->size);
+	gem_close(fd, bo->handle);
+	free(bo);
+}
+
+uint64_t
+igt_lima_get_bo_offset(int fd, uint32_t handle)
+{
+	struct drm_lima_gem_info gem_info = {
+		.handle = handle,
+	};
+
+	do_ioctl(fd, DRM_IOCTL_LIMA_GEM_INFO, &gem_info);
+
+	return gem_info.offset;
+}
+
+uint32_t
+igt_lima_get_param(int fd, int param)
+{
+	struct drm_lima_get_param get = {
+		.param = param,
+	};
+
+	do_ioctl(fd, DRM_IOCTL_LIMA_GET_PARAM, &get);
+
+	return get.value;
+}
+
+void *
+igt_lima_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned int prot)
+{
+	uint64_t offset = igt_lima_get_bo_offset(fd, handle);
+	void *ptr;
+
+	ptr = mmap(0, size, prot, MAP_SHARED, fd, offset);
+	if (ptr == MAP_FAILED)
+		return NULL;
+	else
+		return ptr;
+}
diff --git a/lib/igt_lima.h b/lib/igt_lima.h
new file mode 100644
index 00000000..3c4eaf3d
--- /dev/null
+++ b/lib/igt_lima.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Erico Nunes
+ */
+
+#ifndef IGT_LIMA_H
+#define IGT_LIMA_H
+
+#include "lima_drm.h"
+
+struct lima_bo {
+	int handle;
+	uint64_t offset;
+	uint32_t size;
+	void *map;
+};
+
+struct lima_bo *igt_lima_gem_new(int fd, size_t size);
+void igt_lima_free_bo(int fd, struct lima_bo *bo);
+
+/* IOCTL wrappers */
+uint64_t igt_lima_get_bo_offset(int fd, uint32_t handle);
+uint32_t igt_lima_get_param(int fd, int param);
+void *igt_lima_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned int prot);
+
+#endif /* IGT_LIMA_H */
diff --git a/lib/meson.build b/lib/meson.build
index 85f100f7..a0f92941 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -89,6 +89,7 @@ lib_sources = [
 	'uwildmat/uwildmat.c',
 	'igt_kmod.c',
 	'igt_panfrost.c',
+	'igt_lima.c',
 	'igt_v3d.c',
 	'igt_vc4.c',
 	'igt_vmwgfx.c',
-- 
2.40.1