* Joonyoung Shim <jy0922.shim@samsung.com>
* Seung-Woo Kim <sw0312.kim@samsung.com>
*
- * 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 (including the next
- * paragraph) 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
- * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ * 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.
*/
#include <drm/drmP.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_fb.h"
#include "exynos_drm_gem.h"
+#include "exynos_drm_iommu.h"
#define MAX_CONNECTOR 4
#define PREFERRED_BPP 32
struct exynos_drm_gem_obj *exynos_gem_obj;
};
+static int exynos_drm_fb_mmap(struct fb_info *info,
+ struct vm_area_struct *vma)
+{
+ struct drm_fb_helper *helper = info->par;
+ struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(helper);
+ struct exynos_drm_gem_obj *exynos_gem_obj = exynos_fbd->exynos_gem_obj;
+ struct exynos_drm_gem_buf *buffer = exynos_gem_obj->buffer;
+ unsigned long vm_size;
+ int ret;
+
+ DRM_DEBUG_KMS("%s\n", __func__);
+
+ vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+
+ vm_size = vma->vm_end - vma->vm_start;
+
+ if (vm_size > buffer->size)
+ return -EINVAL;
+
+ ret = dma_mmap_attrs(helper->dev->dev, vma, buffer->pages,
+ buffer->dma_addr, buffer->size, &buffer->dma_attrs);
+ if (ret < 0) {
+ DRM_ERROR("failed to mmap.\n");
+ return ret;
+ }
+
+ return 0;
+}
+
static struct fb_ops exynos_drm_fb_ops = {
.owner = THIS_MODULE,
+ .fb_mmap = exynos_drm_fb_mmap,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
return -EFAULT;
}
+ /* map pages with kernel virtual space. */
+ if (!buffer->kvaddr) {
+ if (is_drm_iommu_supported(dev)) {
+ unsigned int nr_pages = buffer->size >> PAGE_SHIFT;
+
+ buffer->kvaddr = vmap(buffer->pages, nr_pages, VM_MAP,
+ pgprot_writecombine(PAGE_KERNEL));
+ } else {
+ phys_addr_t dma_addr = buffer->dma_addr;
+ if (dma_addr)
+ buffer->kvaddr = phys_to_virt(dma_addr);
+ else
+ buffer->kvaddr = (void __iomem *)NULL;
+ }
+ if (!buffer->kvaddr) {
+ DRM_ERROR("failed to map pages to kernel space.\n");
+ return -EIO;
+ }
+ }
+
/* buffer count to framebuffer always is 1 at booting time. */
exynos_drm_fb_set_buf_cnt(fb, 1);
dev->mode_config.fb_base = (resource_size_t)buffer->dma_addr;
fbi->screen_base = buffer->kvaddr + offset;
- fbi->fix.smem_start = (unsigned long)(page_to_phys(buffer->pages[0]) +
- offset);
+ if (is_drm_iommu_supported(dev))
+ fbi->fix.smem_start = (unsigned long)
+ (page_to_phys(sg_page(buffer->sgt->sgl)) + offset);
+ else
+ fbi->fix.smem_start = (unsigned long)buffer->dma_addr;
+
fbi->screen_size = size;
fbi->fix.smem_len = size;
exynos_gem_obj = exynos_drm_gem_create(dev, 0, size);
if (IS_ERR(exynos_gem_obj)) {
ret = PTR_ERR(exynos_gem_obj);
- goto out;
+ goto err_release_framebuffer;
}
exynos_fbdev->exynos_gem_obj = exynos_gem_obj;
if (IS_ERR_OR_NULL(helper->fb)) {
DRM_ERROR("failed to create drm framebuffer.\n");
ret = PTR_ERR(helper->fb);
- goto out;
+ goto err_destroy_gem;
}
helper->fbdev = fbi;
ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
if (ret) {
DRM_ERROR("failed to allocate cmap.\n");
- goto out;
+ goto err_destroy_framebuffer;
}
ret = exynos_drm_fbdev_update(helper, helper->fb);
- if (ret < 0) {
- fb_dealloc_cmap(&fbi->cmap);
- goto out;
- }
+ if (ret < 0)
+ goto err_dealloc_cmap;
+
+ mutex_unlock(&dev->struct_mutex);
+ return ret;
+
+err_dealloc_cmap:
+ fb_dealloc_cmap(&fbi->cmap);
+err_destroy_framebuffer:
+ drm_framebuffer_cleanup(helper->fb);
+err_destroy_gem:
+ exynos_drm_gem_destroy(exynos_gem_obj);
+err_release_framebuffer:
+ framebuffer_release(fbi);
/*
* if failed, all resources allocated above would be released by
static void exynos_drm_fbdev_destroy(struct drm_device *dev,
struct drm_fb_helper *fb_helper)
{
+ struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(fb_helper);
+ struct exynos_drm_gem_obj *exynos_gem_obj = exynos_fbd->exynos_gem_obj;
struct drm_framebuffer *fb;
+ if (is_drm_iommu_supported(dev) && exynos_gem_obj->buffer->kvaddr)
+ vunmap(exynos_gem_obj->buffer->kvaddr);
+
/* release drm framebuffer and real buffer */
if (fb_helper->fb && fb_helper->fb->funcs) {
fb = fb_helper->fb;
projects / karo-tx-linux.git / blobdiff