initial commit

1 files changed, 364 insertions, 0 deletions

diff --git a/gralloc.c b/gralloc.c
new file mode 100644
index 0000000..850a39e
--- /dev/null
+++ b/gralloc.c
@@ -0,0 +1,364 @@
+/*
+ * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright (C) 2010-2011 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#define LOG_TAG "GRALLOC-MOD"
+
+#include <cutils/log.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <pthread.h>
+#include <errno.h>
+
+#include "gralloc_drm.h"
+#include "gralloc_drm_handle.h"
+
+struct drm_module_t {
+	gralloc_module_t base;
+
+	pthread_mutex_t mutex;
+	struct gralloc_drm_t *drm;
+};
+
+/*
+ * Initialize the DRM device object, optionally with KMS.
+ */
+static int drm_init(struct drm_module_t *dmod, int kms)
+{
+	int err = 0;
+
+	pthread_mutex_lock(&dmod->mutex);
+	if (!dmod->drm) {
+		dmod->drm = gralloc_drm_create();
+		if (!dmod->drm)
+			err = -EINVAL;
+	}
+	if (!err && kms)
+		err = gralloc_drm_init_kms(dmod->drm);
+	pthread_mutex_unlock(&dmod->mutex);
+
+	return err;
+}
+
+static int drm_mod_perform(const struct gralloc_module_t *mod, int op, ...)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) mod;
+	va_list args;
+	int err;
+
+	err = drm_init(dmod, 0);
+	if (err)
+		return err;
+
+	va_start(args, op);
+	switch (op) {
+	case GRALLOC_MODULE_PERFORM_GET_DRM_FD:
+		{
+			int *fd = va_arg(args, int *);
+			*fd = gralloc_drm_get_fd(dmod->drm);
+			err = 0;
+		}
+		break;
+	/* should we remove this and next ops, and make it transparent? */
+	case GRALLOC_MODULE_PERFORM_GET_DRM_MAGIC:
+		{
+			int32_t *magic = va_arg(args, int32_t *);
+			err = gralloc_drm_get_magic(dmod->drm, magic);
+		}
+		break;
+	case GRALLOC_MODULE_PERFORM_AUTH_DRM_MAGIC:
+		{
+			int32_t magic = va_arg(args, int32_t);
+			err = gralloc_drm_auth_magic(dmod->drm, magic);
+		}
+		break;
+	case GRALLOC_MODULE_PERFORM_ENTER_VT:
+		{
+			err = gralloc_drm_set_master(dmod->drm);
+		}
+		break;
+	case GRALLOC_MODULE_PERFORM_LEAVE_VT:
+		{
+			gralloc_drm_drop_master(dmod->drm);
+			err = 0;
+		}
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+	va_end(args);
+
+	return err;
+}
+
+static int drm_mod_register_buffer(const gralloc_module_t *mod,
+		buffer_handle_t handle)
+{
+	return (gralloc_drm_handle(handle)) ? 0 : -EINVAL;
+}
+
+static int drm_mod_unregister_buffer(const gralloc_module_t *mod,
+		buffer_handle_t handle)
+{
+	return (gralloc_drm_handle(handle)) ? 0 : -EINVAL;
+}
+
+static int drm_mod_lock(const gralloc_module_t *mod, buffer_handle_t handle,
+		int usage, int x, int y, int w, int h, void **ptr)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) mod;
+	struct gralloc_drm_bo_t *bo;
+	int err;
+
+	err = drm_init(dmod, 0);
+	if (err)
+		return err;
+
+	bo = gralloc_drm_bo_validate(dmod->drm, handle);
+	if (!bo)
+		return -EINVAL;
+
+	return gralloc_drm_bo_map(bo, x, y, w, h, 1, ptr);
+}
+
+static int drm_mod_unlock(const gralloc_module_t *mod, buffer_handle_t handle)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) mod;
+	struct gralloc_drm_bo_t *bo;
+
+	bo = gralloc_drm_bo_validate(dmod->drm, handle);
+	if (!bo)
+		return -EINVAL;
+
+	gralloc_drm_bo_unmap(bo);
+
+	return 0;
+}
+
+static int drm_mod_close_gpu0(struct hw_device_t *dev)
+{
+	struct alloc_device_t *alloc = (struct alloc_device_t *) dev;
+
+	free(alloc);
+
+	return 0;
+}
+
+static int drm_mod_free_gpu0(alloc_device_t *dev, buffer_handle_t handle)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) dev->common.module;
+	struct gralloc_drm_bo_t *bo;
+
+	bo = gralloc_drm_bo_validate(dmod->drm, handle);
+	if (!bo)
+		return -EINVAL;
+
+	if (gralloc_drm_bo_need_fb(bo))
+		gralloc_drm_bo_rm_fb(bo);
+	gralloc_drm_bo_destroy(bo);
+
+	return 0;
+}
+
+static int drm_mod_alloc_gpu0(alloc_device_t *dev,
+		int w, int h, int format, int usage,
+		buffer_handle_t *handle, int *stride)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) dev->common.module;
+	struct gralloc_drm_bo_t *bo;
+	int size, bpp, err;
+
+	bpp = gralloc_drm_get_bpp(format);
+	if (!bpp)
+		return -EINVAL;
+
+	bo = gralloc_drm_bo_create(dmod->drm, w, h, format, usage);
+	if (!bo)
+		return -ENOMEM;
+
+	if (gralloc_drm_bo_need_fb(bo)) {
+		err = gralloc_drm_bo_add_fb(bo);
+		if (err) {
+			LOGE("failed to add fb");
+			gralloc_drm_bo_destroy(bo);
+			return err;
+		}
+	}
+
+	*handle = gralloc_drm_bo_get_handle(bo, stride);
+	/* in pixels */
+	*stride /= bpp;
+
+	return 0;
+}
+
+static int drm_mod_open_gpu0(struct drm_module_t *dmod, hw_device_t **dev)
+{
+	struct alloc_device_t *alloc;
+	int err;
+
+	err = drm_init(dmod, 0);
+	if (err)
+		return err;
+
+	alloc = calloc(1, sizeof(*alloc));
+	if (!alloc)
+		return -EINVAL;
+
+	alloc->common.tag = HARDWARE_DEVICE_TAG;
+	alloc->common.version = 0;
+	alloc->common.module = &dmod->base.common;
+	alloc->common.close = drm_mod_close_gpu0;
+
+	alloc->alloc = drm_mod_alloc_gpu0;
+	alloc->free = drm_mod_free_gpu0;
+
+	*dev = &alloc->common;
+
+	return 0;
+}
+
+static int drm_mod_close_fb0(struct hw_device_t *dev)
+{
+	struct framebuffer_device_t *fb = (struct framebuffer_device_t *) dev;
+
+	free(fb);
+
+	return 0;
+}
+
+static int drm_mod_set_swap_interval_fb0(struct framebuffer_device_t *fb,
+		int interval)
+{
+	if (interval < fb->minSwapInterval || interval > fb->maxSwapInterval)
+		return -EINVAL;
+	return 0;
+}
+
+static int drm_mod_post_fb0(struct framebuffer_device_t *fb,
+		buffer_handle_t handle)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) fb->common.module;
+	struct gralloc_drm_bo_t *bo;
+
+	bo = gralloc_drm_bo_validate(dmod->drm, handle);
+	if (!bo)
+		return -EINVAL;
+
+	return gralloc_drm_bo_post(bo);
+}
+
+#include <GLES/gl.h>
+static int drm_mod_composition_complete_fb0(struct framebuffer_device_t *fb)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) fb->common.module;
+
+	if (gralloc_drm_is_kms_pipelined(dmod->drm))
+		glFlush();
+	else
+		glFinish();
+
+	return 0;
+}
+
+static int drm_mod_open_fb0(struct drm_module_t *dmod, struct hw_device_t **dev)
+{
+	struct framebuffer_device_t *fb;
+	int err;
+
+	err = drm_init(dmod, 1);
+	if (err)
+		return err;
+
+	fb = calloc(1, sizeof(*fb));
+	if (!fb)
+		return -ENOMEM;
+
+	fb->common.tag = HARDWARE_DEVICE_TAG;
+	fb->common.version = 0;
+	fb->common.module = &dmod->base.common;
+	fb->common.close = drm_mod_close_fb0;
+
+	fb->setSwapInterval = drm_mod_set_swap_interval_fb0;
+	fb->post = drm_mod_post_fb0;
+	fb->compositionComplete = drm_mod_composition_complete_fb0;
+
+	gralloc_drm_get_kms_info(dmod->drm, fb);
+
+	*dev = &fb->common;
+
+	LOGI("mode.hdisplay %d\n"
+	     "mode.vdisplay %d\n"
+	     "mode.vrefresh %f\n"
+	     "format 0x%x\n"
+	     "xdpi %f\n"
+	     "ydpi %f\n",
+	     fb->width,
+	     fb->height,
+	     fb->fps,
+	     fb->format,
+	     fb->xdpi, fb->ydpi);
+
+	return 0;
+}
+
+static int drm_mod_open(const struct hw_module_t *mod,
+		const char *name, struct hw_device_t **dev)
+{
+	struct drm_module_t *dmod = (struct drm_module_t *) mod;
+	int err;
+
+	if (strcmp(name, GRALLOC_HARDWARE_GPU0) == 0)
+		err = drm_mod_open_gpu0(dmod, dev);
+	else if (strcmp(name, GRALLOC_HARDWARE_FB0) == 0)
+		err = drm_mod_open_fb0(dmod, dev);
+	else
+		err = -EINVAL;
+
+	return err;
+}
+
+static struct hw_module_methods_t drm_mod_methods = {
+	.open = drm_mod_open
+};
+
+struct drm_module_t HAL_MODULE_INFO_SYM = {
+	.base = {
+		.common = {
+			.tag = HARDWARE_MODULE_TAG,
+			.version_major = 1,
+			.version_minor = 0,
+			.id = GRALLOC_HARDWARE_MODULE_ID,
+			.name = "DRM Memory Allocator",
+			.author = "Chia-I Wu",
+			.methods = &drm_mod_methods
+		},
+		.registerBuffer = drm_mod_register_buffer,
+		.unregisterBuffer = drm_mod_unregister_buffer,
+		.lock = drm_mod_lock,
+		.unlock = drm_mod_unlock,
+		.perform = drm_mod_perform
+	},
+	.mutex = PTHREAD_MUTEX_INITIALIZER,
+	.drm = NULL
+};