tests/kmstest: support exynos

In this patch, to support exynos for KMS, Exynos KMS driver is newly added.
Also, Exynos is added to the list of kmstest supported modules.

Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Rob Clark <robclark@freedesktop.org>

libkms/Makefile.am

@@ -31,6 +31,11 @@ if HAVE_RADEON
 libkms_la_SOURCES += radeon.c
 endif
 
+if HAVE_EXYNOS
+libkms_la_SOURCES += exynos.c
+AM_CFLAGS += -I$(top_srcdir)/exynos
+endif
+
 libkmsincludedir = ${includedir}/libkms
 libkmsinclude_HEADERS = libkms.h
 

libkms/exynos.c

@@ -0,0 +1,207 @@
+/* exynos.c
+ *
+ * Copyright 2009 Samsung Electronics Co., Ltd.
+ * Authors:
+ *	SooChan Lim <sc1.lim@samsung.com>
+ *      Sangjin LEE <lsj119@samsung.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#define HAVE_STDINT_H
+#define _FILE_OFFSET_BITS 64
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "internal.h"
+
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include "xf86drm.h"
+
+#include "exynos_drm.h"
+
+struct exynos_bo
+{
+	struct kms_bo base;
+	unsigned map_count;
+};
+
+static int
+exynos_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
+{
+	switch (key) {
+	case KMS_BO_TYPE:
+		*out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int
+exynos_destroy(struct kms_driver *kms)
+{
+	free(kms);
+	return 0;
+}
+
+static int
+exynos_bo_create(struct kms_driver *kms,
+		 const unsigned width, const unsigned height,
+		 const enum kms_bo_type type, const unsigned *attr,
+		 struct kms_bo **out)
+{
+	struct drm_exynos_gem_create arg;
+	unsigned size, pitch;
+	struct exynos_bo *bo;
+	int i, ret;
+
+	for (i = 0; attr[i]; i += 2) {
+		switch (attr[i]) {
+		case KMS_WIDTH:
+		case KMS_HEIGHT:
+		case KMS_BO_TYPE:
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	bo = calloc(1, sizeof(*bo));
+	if (!bo)
+		return -ENOMEM;
+
+	if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) {
+		pitch = 64 * 4;
+		size = 64 * 64 * 4;
+	} else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) {
+		pitch = width * 4;
+		pitch = (pitch + 512 - 1) & ~(512 - 1);
+		size = pitch * ((height + 4 - 1) & ~(4 - 1));
+	} else {
+		return -EINVAL;
+	}
+
+	memset(&arg, 0, sizeof(arg));
+	arg.size = size;
+
+	ret = drmCommandWriteRead(kms->fd, DRM_EXYNOS_GEM_CREATE, &arg, sizeof(arg));
+	if (ret)
+		goto err_free;
+
+	bo->base.kms = kms;
+	bo->base.handle = arg.handle;
+	bo->base.size = size;
+	bo->base.pitch = pitch;
+
+	*out = &bo->base;
+
+	return 0;
+
+err_free:
+	free(bo);
+	return ret;
+}
+
+static int
+exynos_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
+{
+	switch (key) {
+	default:
+		return -EINVAL;
+	}
+}
+
+static int
+exynos_bo_map(struct kms_bo *_bo, void **out)
+{
+	struct exynos_bo *bo = (struct exynos_bo *)_bo;
+	struct drm_exynos_gem_map_off arg;
+	void *map = NULL;
+	int ret;
+
+	if (bo->base.ptr) {
+		bo->map_count++;
+		*out = bo->base.ptr;
+		return 0;
+	}
+
+	memset(&arg, 0, sizeof(arg));
+	arg.handle = bo->base.handle;
+
+	ret = drmCommandWriteRead(bo->base.kms->fd, DRM_EXYNOS_GEM_MAP_OFFSET, &arg, sizeof(arg));
+	if (ret)
+		return ret;
+
+	map = mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset);
+	if (map == MAP_FAILED)
+		return -errno;
+
+	bo->base.ptr = map;
+	bo->map_count++;
+	*out = bo->base.ptr;
+
+	return 0;
+}
+
+static int
+exynos_bo_unmap(struct kms_bo *_bo)
+{
+	struct exynos_bo *bo = (struct exynos_bo *)_bo;
+	bo->map_count--;
+	return 0;
+}
+
+static int
+exynos_bo_destroy(struct kms_bo *_bo)
+{
+	struct exynos_bo *bo = (struct exynos_bo *)_bo;
+	struct drm_gem_close arg;
+	int ret;
+
+	if (bo->base.ptr) {
+		/* XXX Sanity check map_count */
+		munmap(bo->base.ptr, bo->base.size);
+		bo->base.ptr = NULL;
+	}
+
+	memset(&arg, 0, sizeof(arg));
+	arg.handle = bo->base.handle;
+
+	ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
+	if (ret)
+		return -errno;
+
+	free(bo);
+	return 0;
+}
+
+int
+exynos_create(int fd, struct kms_driver **out)
+{
+	struct kms_driver *kms;
+
+	kms = calloc(1, sizeof(*kms));
+	if (!kms)
+		return -ENOMEM;
+
+	kms->fd = fd;
+
+	kms->bo_create = exynos_bo_create;
+	kms->bo_map = exynos_bo_map;
+	kms->bo_unmap = exynos_bo_unmap;
+	kms->bo_get_prop = exynos_bo_get_prop;
+	kms->bo_destroy = exynos_bo_destroy;
+	kms->get_prop = exynos_get_prop;
+	kms->destroy = exynos_destroy;
+	*out = kms;
+
+	return 0;
+}

libkms/internal.h

@@ -74,4 +74,6 @@ int nouveau_create(int fd, struct kms_driver **out);
 
 int radeon_create(int fd, struct kms_driver **out);
 
+int exynos_create(int fd, struct kms_driver **out);
+
 #endif

libkms/linux.c

@@ -114,6 +114,10 @@ linux_from_sysfs(int fd, struct kms_driver **out)
 #ifdef HAVE_RADEON
 	else if (!strcmp(name, "radeon"))
 		ret = radeon_create(fd, out);
+#endif
+#ifdef HAVE_EXYNOS
+	else if (!strcmp(name, "exynos"))
+		ret = exynos_create(fd, out);
 #endif
 	else
 		ret = -ENOSYS;

tests/kmstest/main.c

@@ -61,6 +61,7 @@ char *drivers[] = {
 	"radeon",
 	"nouveau",
 	"vmwgfx",
+	"exynos",
 	NULL
 };