initial commit

1 files changed, 366 insertions, 0 deletions

diff --git a/gralloc_drm_radeon.c b/gralloc_drm_radeon.c
new file mode 100644
index 0000000..59fb782
--- /dev/null
+++ b/gralloc_drm_radeon.c
@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright (C) 2010-2011 LunarG Inc.
+ *
+ * Based on xf86-video-ati, which has
+ *
+ * Copyright © 2009 Red Hat, 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.
+ */
+
+/* XXX This driver assumes evergreen. */
+
+#define LOG_TAG "GRALLOC-RADEON"
+
+#include <cutils/log.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <drm.h>
+#include <radeon_drm.h>
+#include <radeon_bo_gem.h>
+#include <radeon_bo.h>
+
+#include "gralloc_drm.h"
+#include "gralloc_drm_priv.h"
+
+#define RADEON_GPU_PAGE_SIZE 4096
+
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#define ALIGN(val, align) (((val) + (align) - 1) & ~((align) - 1))
+
+struct radeon_info {
+	struct gralloc_drm_drv_t base;
+
+	int fd;
+	struct radeon_bo_manager *bufmgr;
+
+	uint32_t tile_config;
+	int num_channels;
+	int num_banks;
+	int group_bytes;
+	/* r6xx+ tile config */
+	int have_tiling_info;
+	int allow_color_tiling;
+};
+
+struct radeon_buffer {
+	struct gralloc_drm_bo_t base;
+
+	struct radeon_bo *rbo;
+};
+
+static int eg_init_tile_config(struct radeon_info *info)
+{
+	struct drm_radeon_info ginfo;
+	uint32_t val;
+	int ret;
+
+	memset(&ginfo, 0, sizeof(ginfo));
+	ginfo.request = RADEON_INFO_TILING_CONFIG;
+	ginfo.value = (long) &val;
+	ret = drmCommandWriteRead(info->fd, DRM_RADEON_INFO,
+			&ginfo, sizeof(ginfo));
+	if (ret)
+		return ret;
+
+	info->tile_config = val;
+
+	switch (info->tile_config & 0xf) {
+	case 0:
+		info->num_channels = 1;
+		break;
+	case 1:
+		info->num_channels = 2;
+		break;
+	case 2:
+		info->num_channels = 4;
+		break;
+	case 3:
+		info->num_channels = 8;
+		break;
+	default:
+		return -EINVAL;
+		break;
+	}
+
+	info->num_banks = (info->tile_config & 0xf0) >> 4;
+
+	switch ((info->tile_config & 0xf00) >> 8) {
+	case 0:
+		info->group_bytes = 256;
+		break;
+	case 1:
+		info->group_bytes = 512;
+		break;
+	default:
+		return -EINVAL;
+		break;
+	}
+
+	info->have_tiling_info = 1;
+	info->allow_color_tiling = 0;
+
+	return 0;
+}
+
+/* returns pitch alignment in pixels */
+static int eg_get_pitch_align(struct radeon_info *info, int bpe, uint32_t tiling)
+{
+	int pitch_align = 1;
+
+	if (tiling & RADEON_TILING_MACRO) {
+		/* general surface requirements */
+		pitch_align = (((info->group_bytes / 8) / bpe) *
+				info->num_banks) * 8;
+		/* further restrictions for scanout */
+		pitch_align = MAX(info->num_banks * 8, pitch_align);
+	} else if (tiling & RADEON_TILING_MICRO) {
+		/* general surface requirements */
+		pitch_align = MAX(8, (info->group_bytes / (8 * bpe)));
+		/* further restrictions for scanout */
+		pitch_align = MAX(info->group_bytes / bpe, pitch_align);
+	} else {
+		if (info->have_tiling_info)
+			/* linear aligned requirements */
+			pitch_align = MAX(64, info->group_bytes / bpe);
+		else
+			/* default to 512 elements if we don't know the real
+			 * group size otherwise the kernel may reject the CS
+			 * if the group sizes don't match as the pitch won't
+			 * be aligned properly.
+			 */
+			pitch_align = 512;
+	}
+
+	return pitch_align;
+}
+
+/* returns height alignment in pixels */
+static int eg_get_height_align(struct radeon_info *info, uint32_t tiling)
+{
+	int height_align = 1;
+
+	if (tiling & RADEON_TILING_MACRO)
+		height_align =  info->num_channels * 8;
+	else if (tiling & RADEON_TILING_MICRO)
+		height_align = 8;
+	else
+		height_align = 8;
+
+	return height_align;
+}
+
+/* returns base alignment in bytes */
+static int eg_get_base_align(struct radeon_info *info,
+		int bpe, uint32_t tiling)
+{
+	int pixel_align = eg_get_pitch_align(info, bpe, tiling);
+	int height_align = eg_get_height_align(info, tiling);
+	int base_align = RADEON_GPU_PAGE_SIZE;
+
+	if (tiling & RADEON_TILING_MACRO) {
+		base_align =
+			MAX(info->num_banks * info->num_channels * 8 * 8 * bpe,
+					pixel_align * bpe * height_align);
+	}
+	else {
+		if (info->have_tiling_info)
+			base_align = info->group_bytes;
+		else
+			/* default to 512 if we don't know the real
+			 * group size otherwise the kernel may reject the CS
+			 * if the group sizes don't match as the base won't
+			 * be aligned properly.
+			 */
+			base_align = 512;
+	}
+
+	return base_align;
+}
+
+static uint32_t drm_gem_get_tiling(const struct gralloc_drm_handle_t *handle)
+{
+	return 0;
+}
+
+static struct gralloc_drm_bo_t *
+drm_gem_radeon_alloc(struct gralloc_drm_drv_t *drv, struct gralloc_drm_handle_t *handle)
+{
+	struct radeon_info *info = (struct radeon_info *) drv;
+	struct radeon_buffer *rbuf;
+	uint32_t tiling, domain;
+	int cpp;
+
+	tiling = drm_gem_get_tiling(handle);
+	domain = RADEON_GEM_DOMAIN_VRAM;
+	cpp = gralloc_drm_get_bpp(handle->format);
+	if (!cpp) {
+		LOGE("unrecognized format 0x%x", handle->format);
+		return NULL;
+	}
+
+	rbuf = calloc(1, sizeof(*rbuf));
+	if (!rbuf)
+		return NULL;
+
+
+	if (handle->name) {
+		rbuf->rbo = radeon_bo_open(info->bufmgr, handle->name,
+				0, 0, domain, 0);
+		if (!rbuf->rbo) {
+			LOGE("failed to create rbo from name %u",
+					handle->name);
+			free(rbuf);
+			return NULL;
+		}
+	}
+	else {
+		int aligned_width, aligned_height;
+		int pitch, size, base_align;
+
+		if (handle->usage & (GRALLOC_USAGE_HW_FB |
+					GRALLOC_USAGE_HW_TEXTURE)) {
+			aligned_width = ALIGN(handle->width,
+					eg_get_pitch_align(info, cpp, tiling));
+			aligned_height = ALIGN(handle->height,
+					eg_get_height_align(info, tiling));
+		}
+		else {
+			aligned_width = handle->width;
+			aligned_height = handle->height;
+		}
+
+		if (!(handle->usage & (GRALLOC_USAGE_HW_FB |
+						GRALLOC_USAGE_HW_RENDER)) &&
+		    (handle->usage & GRALLOC_USAGE_SW_READ_OFTEN))
+			domain = RADEON_GEM_DOMAIN_GTT;
+
+		pitch = aligned_width * cpp;
+		size = ALIGN(aligned_height * pitch, RADEON_GPU_PAGE_SIZE);
+		base_align = eg_get_base_align(info, cpp, tiling);
+
+		rbuf->rbo = radeon_bo_open(info->bufmgr, 0,
+				size, base_align, domain, 0);
+		if (!rbuf->rbo) {
+			LOGE("failed to allocate rbo %dx%dx%d",
+					handle->width, handle->height, cpp);
+			free(rbuf);
+			return NULL;
+		}
+
+		if (tiling)
+			radeon_bo_set_tiling(rbuf->rbo, tiling, pitch);
+
+		if (radeon_gem_get_kernel_name(rbuf->rbo,
+					(uint32_t *) &handle->name)) {
+			LOGE("failed to flink rbo");
+			radeon_bo_unref(rbuf->rbo);
+			free(rbuf);
+			return NULL;
+		}
+
+		handle->stride = pitch;
+	}
+
+	if (handle->usage & GRALLOC_USAGE_HW_FB)
+		rbuf->base.fb_handle = rbuf->rbo->handle;
+
+	rbuf->base.handle = handle;
+
+	return &rbuf->base;
+}
+
+static void drm_gem_radeon_free(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo)
+{
+	struct radeon_buffer *rbuf = (struct radeon_buffer *) bo;
+	radeon_bo_unref(rbuf->rbo);
+}
+
+static int drm_gem_radeon_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 radeon_buffer *rbuf = (struct radeon_buffer *) bo;
+	int err;
+
+	err = radeon_bo_map(rbuf->rbo, enable_write);
+	if (!err)
+		*addr = rbuf->rbo->ptr;
+
+	return err;
+}
+
+static void drm_gem_radeon_unmap(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo)
+{
+	struct radeon_buffer *rbuf = (struct radeon_buffer *) bo;
+	radeon_bo_unmap(rbuf->rbo);
+}
+
+static void drm_gem_radeon_init_kms_features(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_t *drm)
+{
+	drm->mode_dirty_fb = 0;
+	drm->swap_mode = DRM_SWAP_FLIP;
+	drm->mode_sync_flip = 1;
+	drm->swap_interval = 1;
+	drm->vblank_secondary = 0;
+}
+
+static void drm_gem_radeon_destroy(struct gralloc_drm_drv_t *drv)
+{
+	struct radeon_info *info = (struct radeon_info *) drv;
+
+	radeon_bo_manager_gem_dtor(info->bufmgr);
+	free(info);
+}
+
+struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_radeon(int fd)
+{
+	struct radeon_info *info;
+
+	info = calloc(1, sizeof(*info));
+	if (!info)
+		return NULL;
+
+	info->fd = fd;
+	info->bufmgr = radeon_bo_manager_gem_ctor(info->fd);
+	if (!info->bufmgr) {
+		LOGE("failed to create buffer manager");
+		free(info);
+		return NULL;
+	}
+
+	if (eg_init_tile_config(info)) {
+		radeon_bo_manager_gem_dtor(info->bufmgr);
+		free(info);
+		return NULL;
+	}
+
+	info->base.destroy = drm_gem_radeon_destroy;
+	info->base.init_kms_features = drm_gem_radeon_init_kms_features;
+	info->base.alloc = drm_gem_radeon_alloc;
+	info->base.free = drm_gem_radeon_free;
+	info->base.map = drm_gem_radeon_map;
+	info->base.unmap = drm_gem_radeon_unmap;
+
+	return &info->base;
+}