freedreno: completely untested initial support

v2: [Emil Velikov]
 - drmGetVersion returns the kernel module name.
 - Add it to the build :)
 - freedreno_map returns void * while gralloc::map expects int.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

1 files changed, 209 insertions, 0 deletions

diff --git a/gralloc_drm_freedreno.c b/gralloc_drm_freedreno.c
new file mode 100644
index 0000000..10b0939
--- /dev/null
+++ b/gralloc_drm_freedreno.c
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2011 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright (C) 2011 LunarG Inc.
+ * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
+ *
+ * Based on xf86-video-nouveau, which has
+ *
+ * Copyright © 2007 Red Hat, Inc.
+ * Copyright © 2008 Maarten Maathuis
+ *
+ * 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-FREEDRENO"
+
+#include <cutils/log.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <drm.h>
+#include <freedreno_drmif.h>
+
+#include "gralloc_drm.h"
+#include "gralloc_drm_priv.h"
+
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#define ALIGN(val, align) (((val) + (align) - 1) & ~((align) - 1))
+
+struct fd_info {
+	struct gralloc_drm_drv_t base;
+
+	int fd;
+	struct fd_device *dev;
+};
+
+struct fd_buffer {
+	struct gralloc_drm_bo_t base;
+
+	struct fd_bo *bo;
+};
+
+static struct fd_bo *alloc_bo(struct fd_info *info,
+		int width, int height, int cpp, int usage, int *pitch)
+{
+	struct fd_bo *bo = NULL;
+	int flags, size;
+
+	/* TODO need a scanout flag if (usage & GRALLOC_USAGE_HW_FB).. */
+	flags = DRM_FREEDRENO_GEM_CACHE_WCOMBINE;
+
+	*pitch = ALIGN(width, 32) * cpp;
+	size = *pitch * height;
+
+	return fd_bo_new(info->dev, size, flags);
+}
+
+static struct gralloc_drm_bo_t *
+fd_alloc(struct gralloc_drm_drv_t *drv, struct gralloc_drm_handle_t *handle)
+{
+	struct fd_info *info = (struct fd_info *) drv;
+	struct fd_buffer *fd_buf;
+	int cpp;
+
+	cpp = gralloc_drm_get_bpp(handle->format);
+	if (!cpp) {
+		ALOGE("unrecognized format 0x%x", handle->format);
+		return NULL;
+	}
+
+	fd_buf = calloc(1, sizeof(*fd_buf));
+	if (!fd_buf)
+		return NULL;
+
+	if (handle->name) {
+		fd_buf->bo = fd_bo_from_name(info->dev, handle->name);
+		if (!fd_buf->bo) {
+			ALOGE("failed to create fd bo from name %u",
+					handle->name);
+			free(fd_buf);
+			return NULL;
+		}
+	}
+	else {
+		int width, height, pitch;
+
+		width = handle->width;
+		height = handle->height;
+		gralloc_drm_align_geometry(handle->format, &width, &height);
+
+		fd_buf->bo = alloc_bo(info, width, height,
+				cpp, handle->usage, &pitch);
+		if (!fd_buf->bo) {
+			ALOGE("failed to allocate fd bo %dx%dx%d",
+					handle->width, handle->height, cpp);
+			free(fd_buf);
+			return NULL;
+		}
+
+		if (fd_bo_get_name(fd_buf->bo, (uint32_t *) &handle->name)) {
+			ALOGE("failed to flink fd bo");
+			fd_bo_del(fd_buf->bo);
+			free(fd_buf);
+			return NULL;
+		}
+
+		handle->stride = pitch;
+	}
+
+	if (handle->usage & GRALLOC_USAGE_HW_FB)
+		fd_buf->base.fb_handle = fd_bo_handle(fd_buf->bo);
+
+	fd_buf->base.handle = handle;
+
+	return &fd_buf->base;
+}
+
+static void fd_free(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo)
+{
+	struct fd_buffer *fd_buf = (struct fd_buffer *) bo;
+	fd_bo_del(fd_buf->bo);
+	free(fd_buf);
+}
+
+static int fd_map(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo, int x, int y, int w, int h,
+		int enable_write, void **addr)
+{
+	struct fd_buffer *fd_buf = (struct fd_buffer *) bo;
+	if (fd_bo_map(fd_buf->bo))
+		return 0;
+	return -errno;
+}
+
+static void fd_unmap(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo)
+{
+	// TODO should add fd_bo_unmap() to libdrm_freedreno someday..
+}
+
+static void fd_init_kms_features(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_t *drm)
+{
+	struct fd_info *info = (struct fd_info *) drv;
+
+	switch (drm->primary.fb_format) {
+	case HAL_PIXEL_FORMAT_BGRA_8888:
+	case HAL_PIXEL_FORMAT_RGB_565:
+		break;
+	default:
+		drm->primary.fb_format = HAL_PIXEL_FORMAT_BGRA_8888;
+		break;
+	}
+
+	drm->mode_quirk_vmwgfx = 0;
+	drm->swap_mode = DRM_SWAP_FLIP;
+	drm->mode_sync_flip = 1;
+	drm->swap_interval = 1;
+	drm->vblank_secondary = 0;
+}
+
+static void fd_destroy(struct gralloc_drm_drv_t *drv)
+{
+	struct fd_info *info = (struct fd_info *) drv;
+	fd_device_del(info->dev);
+	free(info);
+}
+
+struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_freedreno(int fd)
+{
+	struct fd_info *info;
+	int err;
+
+	info = calloc(1, sizeof(*info));
+	if (!info)
+		return NULL;
+
+	info->fd = fd;
+	info->dev = fd_device_new_dup(info->fd);
+	if (!info->dev) {
+		ALOGE("failed to create fd device");
+		free(info);
+		return NULL;
+	}
+
+	info->base.destroy = fd_destroy;
+	info->base.init_kms_features = fd_init_kms_features;
+	info->base.alloc = fd_alloc;
+	info->base.free = fd_free;
+	info->base.map = fd_map;
+	info->base.unmap = fd_unmap;
+
+	return &info->base;
+}
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