ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/exynos
exynosdrm-y := exynos_drm_drv.o exynos_drm_crtc.o exynos_drm_fbdev.o \
- exynos_drm_fb.o exynos_drm_buf.o exynos_drm_gem.o \
- exynos_drm_core.o exynos_drm_plane.o
+ exynos_drm_fb.o exynos_drm_gem.o exynos_drm_core.o \
+ exynos_drm_plane.o
exynosdrm-$(CONFIG_DRM_EXYNOS_IOMMU) += exynos_drm_iommu.o
exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD) += exynos_drm_fimd.o
+++ /dev/null
-/* exynos_drm_buf.c
- *
- * Copyright (c) 2011 Samsung Electronics Co., Ltd.
- * Author: Inki Dae <inki.dae@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.
- */
-
-#include <drm/drmP.h>
-#include <drm/exynos_drm.h>
-
-#include "exynos_drm_drv.h"
-#include "exynos_drm_gem.h"
-#include "exynos_drm_buf.h"
-#include "exynos_drm_iommu.h"
-
-static int lowlevel_buffer_allocate(struct drm_device *dev,
- unsigned int flags, struct exynos_drm_gem_buf *buf)
-{
- int ret = 0;
- enum dma_attr attr;
- unsigned int nr_pages;
-
- if (buf->dma_addr) {
- DRM_DEBUG_KMS("already allocated.\n");
- return 0;
- }
-
- init_dma_attrs(&buf->dma_attrs);
-
- /*
- * if EXYNOS_BO_CONTIG, fully physically contiguous memory
- * region will be allocated else physically contiguous
- * as possible.
- */
- if (!(flags & EXYNOS_BO_NONCONTIG))
- dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &buf->dma_attrs);
-
- /*
- * if EXYNOS_BO_WC or EXYNOS_BO_NONCACHABLE, writecombine mapping
- * else cachable mapping.
- */
- if (flags & EXYNOS_BO_WC || !(flags & EXYNOS_BO_CACHABLE))
- attr = DMA_ATTR_WRITE_COMBINE;
- else
- attr = DMA_ATTR_NON_CONSISTENT;
-
- dma_set_attr(attr, &buf->dma_attrs);
- dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &buf->dma_attrs);
-
- nr_pages = buf->size >> PAGE_SHIFT;
-
- if (!is_drm_iommu_supported(dev)) {
- dma_addr_t start_addr;
- unsigned int i = 0;
-
- buf->pages = drm_calloc_large(nr_pages, sizeof(struct page *));
- if (!buf->pages) {
- DRM_ERROR("failed to allocate pages.\n");
- return -ENOMEM;
- }
-
- buf->cookie = dma_alloc_attrs(dev->dev,
- buf->size,
- &buf->dma_addr, GFP_KERNEL,
- &buf->dma_attrs);
- if (!buf->cookie) {
- DRM_ERROR("failed to allocate buffer.\n");
- ret = -ENOMEM;
- goto err_free;
- }
-
- start_addr = buf->dma_addr;
- while (i < nr_pages) {
- buf->pages[i] = phys_to_page(start_addr);
- start_addr += PAGE_SIZE;
- i++;
- }
- } else {
-
- buf->pages = dma_alloc_attrs(dev->dev, buf->size,
- &buf->dma_addr, GFP_KERNEL,
- &buf->dma_attrs);
- if (!buf->pages) {
- DRM_ERROR("failed to allocate buffer.\n");
- return -ENOMEM;
- }
- }
-
- DRM_DEBUG_KMS("dma_addr(0x%lx), size(0x%lx)\n",
- (unsigned long)buf->dma_addr,
- buf->size);
-
- return ret;
-
-err_free:
- if (!is_drm_iommu_supported(dev))
- drm_free_large(buf->pages);
-
- return ret;
-}
-
-static void lowlevel_buffer_deallocate(struct drm_device *dev,
- unsigned int flags, struct exynos_drm_gem_buf *buf)
-{
- if (!buf->dma_addr) {
- DRM_DEBUG_KMS("dma_addr is invalid.\n");
- return;
- }
-
- DRM_DEBUG_KMS("dma_addr(0x%lx), size(0x%lx)\n",
- (unsigned long)buf->dma_addr,
- buf->size);
-
- if (!is_drm_iommu_supported(dev)) {
- dma_free_attrs(dev->dev, buf->size, buf->cookie,
- (dma_addr_t)buf->dma_addr, &buf->dma_attrs);
- drm_free_large(buf->pages);
- } else
- dma_free_attrs(dev->dev, buf->size, buf->pages,
- (dma_addr_t)buf->dma_addr, &buf->dma_attrs);
-
- buf->dma_addr = (dma_addr_t)NULL;
-}
-
-struct exynos_drm_gem_buf *exynos_drm_init_buf(struct drm_device *dev,
- unsigned int size)
-{
- struct exynos_drm_gem_buf *buffer;
-
- DRM_DEBUG_KMS("desired size = 0x%x\n", size);
-
- buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
- if (!buffer)
- return NULL;
-
- buffer->size = size;
- return buffer;
-}
-
-void exynos_drm_fini_buf(struct drm_device *dev,
- struct exynos_drm_gem_buf *buffer)
-{
- kfree(buffer);
- buffer = NULL;
-}
-
-int exynos_drm_alloc_buf(struct drm_device *dev,
- struct exynos_drm_gem_buf *buf, unsigned int flags)
-{
-
- /*
- * allocate memory region and set the memory information
- * to vaddr and dma_addr of a buffer object.
- */
- if (lowlevel_buffer_allocate(dev, flags, buf) < 0)
- return -ENOMEM;
-
- return 0;
-}
-
-void exynos_drm_free_buf(struct drm_device *dev,
- unsigned int flags, struct exynos_drm_gem_buf *buffer)
-{
-
- lowlevel_buffer_deallocate(dev, flags, buffer);
-}
+++ /dev/null
-/* exynos_drm_buf.h
- *
- * Copyright (c) 2011 Samsung Electronics Co., Ltd.
- * Author: Inki Dae <inki.dae@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.
- */
-
-#ifndef _EXYNOS_DRM_BUF_H_
-#define _EXYNOS_DRM_BUF_H_
-
-/* create and initialize buffer object. */
-struct exynos_drm_gem_buf *exynos_drm_init_buf(struct drm_device *dev,
- unsigned int size);
-
-/* destroy buffer object. */
-void exynos_drm_fini_buf(struct drm_device *dev,
- struct exynos_drm_gem_buf *buffer);
-
-/* allocate physical memory region and setup sgt. */
-int exynos_drm_alloc_buf(struct drm_device *dev,
- struct exynos_drm_gem_buf *buf,
- unsigned int flags);
-
-/* release physical memory region, and sgt. */
-void exynos_drm_free_buf(struct drm_device *dev,
- unsigned int flags,
- struct exynos_drm_gem_buf *buffer);
-
-#endif
return ERR_PTR(ret);
}
-struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,
- int index)
+struct exynos_drm_gem_obj *exynos_drm_fb_gem_obj(struct drm_framebuffer *fb,
+ int index)
{
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
- struct exynos_drm_gem_buf *buffer;
+ struct exynos_drm_gem_obj *obj;
if (index >= MAX_FB_BUFFER)
return NULL;
- buffer = exynos_fb->exynos_gem_obj[index]->buffer;
- if (!buffer)
+ obj = exynos_fb->exynos_gem_obj[index];
+ if (!obj)
return NULL;
- DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)buffer->dma_addr);
+ DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)obj->dma_addr);
- return buffer;
+ return obj;
}
static void exynos_drm_output_poll_changed(struct drm_device *dev)
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj);
-/* get memory information of a drm framebuffer */
-struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,
+/* get gem object of a drm framebuffer */
+struct exynos_drm_gem_obj *exynos_drm_fb_gem_obj(struct drm_framebuffer *fb,
int index);
void exynos_drm_mode_config_init(struct drm_device *dev);
{
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;
+ struct exynos_drm_gem_obj *obj = exynos_fbd->exynos_gem_obj;
unsigned long vm_size;
int ret;
vm_size = vma->vm_end - vma->vm_start;
- if (vm_size > buffer->size)
+ if (vm_size > obj->size)
return -EINVAL;
- ret = dma_mmap_attrs(helper->dev->dev, vma, buffer->pages,
- buffer->dma_addr, buffer->size, &buffer->dma_attrs);
+ ret = dma_mmap_attrs(helper->dev->dev, vma, obj->pages, obj->dma_addr,
+ obj->size, &obj->dma_attrs);
if (ret < 0) {
DRM_ERROR("failed to mmap.\n");
return ret;
struct drm_framebuffer *fb)
{
struct fb_info *fbi = helper->fbdev;
- struct exynos_drm_gem_buf *buffer;
+ struct exynos_drm_gem_obj *obj;
unsigned int size = fb->width * fb->height * (fb->bits_per_pixel >> 3);
unsigned int nr_pages;
unsigned long offset;
drm_fb_helper_fill_var(fbi, helper, sizes->fb_width, sizes->fb_height);
/* RGB formats use only one buffer */
- buffer = exynos_drm_fb_buffer(fb, 0);
- if (!buffer) {
- DRM_DEBUG_KMS("buffer is null.\n");
+ obj = exynos_drm_fb_gem_obj(fb, 0);
+ if (!obj) {
+ DRM_DEBUG_KMS("gem object is null.\n");
return -EFAULT;
}
- nr_pages = buffer->size >> PAGE_SHIFT;
+ nr_pages = obj->size >> PAGE_SHIFT;
- buffer->kvaddr = (void __iomem *) vmap(buffer->pages,
- nr_pages, VM_MAP,
+ obj->kvaddr = (void __iomem *) vmap(obj->pages, nr_pages, VM_MAP,
pgprot_writecombine(PAGE_KERNEL));
- if (!buffer->kvaddr) {
+ if (!obj->kvaddr) {
DRM_ERROR("failed to map pages to kernel space.\n");
return -EIO;
}
offset = fbi->var.xoffset * (fb->bits_per_pixel >> 3);
offset += fbi->var.yoffset * fb->pitches[0];
- fbi->screen_base = buffer->kvaddr + offset;
+ fbi->screen_base = obj->kvaddr + offset;
fbi->screen_size = size;
fbi->fix.smem_len = size;
struct exynos_drm_gem_obj *exynos_gem_obj = exynos_fbd->exynos_gem_obj;
struct drm_framebuffer *fb;
- if (exynos_gem_obj->buffer->kvaddr)
- vunmap(exynos_gem_obj->buffer->kvaddr);
+ if (exynos_gem_obj->kvaddr)
+ vunmap(exynos_gem_obj->kvaddr);
/* release drm framebuffer and real buffer */
if (fb_helper->fb && fb_helper->fb->funcs) {
#include "exynos_drm_drv.h"
#include "exynos_drm_gem.h"
-#include "exynos_drm_buf.h"
#include "exynos_drm_iommu.h"
+static int exynos_drm_alloc_buf(struct exynos_drm_gem_obj *obj)
+{
+ struct drm_device *dev = obj->base.dev;
+ enum dma_attr attr;
+ unsigned int nr_pages;
+
+ if (obj->dma_addr) {
+ DRM_DEBUG_KMS("already allocated.\n");
+ return 0;
+ }
+
+ init_dma_attrs(&obj->dma_attrs);
+
+ /*
+ * if EXYNOS_BO_CONTIG, fully physically contiguous memory
+ * region will be allocated else physically contiguous
+ * as possible.
+ */
+ if (!(obj->flags & EXYNOS_BO_NONCONTIG))
+ dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &obj->dma_attrs);
+
+ /*
+ * if EXYNOS_BO_WC or EXYNOS_BO_NONCACHABLE, writecombine mapping
+ * else cachable mapping.
+ */
+ if (obj->flags & EXYNOS_BO_WC || !(obj->flags & EXYNOS_BO_CACHABLE))
+ attr = DMA_ATTR_WRITE_COMBINE;
+ else
+ attr = DMA_ATTR_NON_CONSISTENT;
+
+ dma_set_attr(attr, &obj->dma_attrs);
+ dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &obj->dma_attrs);
+
+ nr_pages = obj->size >> PAGE_SHIFT;
+
+ if (!is_drm_iommu_supported(dev)) {
+ dma_addr_t start_addr;
+ unsigned int i = 0;
+
+ obj->pages = drm_calloc_large(nr_pages, sizeof(struct page *));
+ if (!obj->pages) {
+ DRM_ERROR("failed to allocate pages.\n");
+ return -ENOMEM;
+ }
+
+ obj->cookie = dma_alloc_attrs(dev->dev,
+ obj->size,
+ &obj->dma_addr, GFP_KERNEL,
+ &obj->dma_attrs);
+ if (!obj->cookie) {
+ DRM_ERROR("failed to allocate buffer.\n");
+ drm_free_large(obj->pages);
+ return -ENOMEM;
+ }
+
+ start_addr = obj->dma_addr;
+ while (i < nr_pages) {
+ obj->pages[i] = phys_to_page(start_addr);
+ start_addr += PAGE_SIZE;
+ i++;
+ }
+ } else {
+ obj->pages = dma_alloc_attrs(dev->dev, obj->size,
+ &obj->dma_addr, GFP_KERNEL,
+ &obj->dma_attrs);
+ if (!obj->pages) {
+ DRM_ERROR("failed to allocate buffer.\n");
+ return -ENOMEM;
+ }
+ }
+
+ DRM_DEBUG_KMS("dma_addr(0x%lx), size(0x%lx)\n",
+ (unsigned long)obj->dma_addr,
+ obj->size);
+
+ return 0;
+}
+
+static void exynos_drm_free_buf(struct exynos_drm_gem_obj *obj)
+{
+ struct drm_device *dev = obj->base.dev;
+
+ if (!obj->dma_addr) {
+ DRM_DEBUG_KMS("dma_addr is invalid.\n");
+ return;
+ }
+
+ DRM_DEBUG_KMS("dma_addr(0x%lx), size(0x%lx)\n",
+ (unsigned long)obj->dma_addr, obj->size);
+
+ if (!is_drm_iommu_supported(dev)) {
+ dma_free_attrs(dev->dev, obj->size, obj->cookie,
+ (dma_addr_t)obj->dma_addr, &obj->dma_attrs);
+ drm_free_large(obj->pages);
+ } else
+ dma_free_attrs(dev->dev, obj->size, obj->pages,
+ (dma_addr_t)obj->dma_addr, &obj->dma_attrs);
+
+ obj->dma_addr = (dma_addr_t)NULL;
+}
+
static int exynos_drm_gem_handle_create(struct drm_gem_object *obj,
struct drm_file *file_priv,
unsigned int *handle)
void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj)
{
- struct drm_gem_object *obj;
- struct exynos_drm_gem_buf *buf;
-
- obj = &exynos_gem_obj->base;
- buf = exynos_gem_obj->buffer;
+ struct drm_gem_object *obj = &exynos_gem_obj->base;
DRM_DEBUG_KMS("handle count = %d\n", obj->handle_count);
if (obj->import_attach)
goto out;
- exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags, buf);
+ exynos_drm_free_buf(exynos_gem_obj);
out:
- exynos_drm_fini_buf(obj->dev, buf);
- exynos_gem_obj->buffer = NULL;
-
drm_gem_free_mmap_offset(obj);
/* release file pointer to gem object. */
drm_gem_object_unreference_unlocked(obj);
- return exynos_gem_obj->buffer->size;
+ return exynos_gem_obj->size;
}
unsigned long size)
{
struct exynos_drm_gem_obj *exynos_gem_obj;
- struct exynos_drm_gem_buf *buf;
int ret;
if (flags & ~(EXYNOS_BO_MASK)) {
size = roundup(size, PAGE_SIZE);
- buf = exynos_drm_init_buf(dev, size);
- if (!buf)
- return ERR_PTR(-ENOMEM);
-
exynos_gem_obj = exynos_drm_gem_init(dev, size);
- if (IS_ERR(exynos_gem_obj)) {
- ret = PTR_ERR(exynos_gem_obj);
- goto err_fini_buf;
- }
-
- exynos_gem_obj->buffer = buf;
+ if (IS_ERR(exynos_gem_obj))
+ return exynos_gem_obj;
/* set memory type and cache attribute from user side. */
exynos_gem_obj->flags = flags;
- ret = exynos_drm_alloc_buf(dev, buf, flags);
- if (ret < 0)
- goto err_gem_fini;
+ ret = exynos_drm_alloc_buf(exynos_gem_obj);
+ if (ret < 0) {
+ drm_gem_object_release(&exynos_gem_obj->base);
+ kfree(exynos_gem_obj);
+ return ERR_PTR(ret);
+ }
return exynos_gem_obj;
-
-err_gem_fini:
- drm_gem_object_release(&exynos_gem_obj->base);
- kfree(exynos_gem_obj);
-err_fini_buf:
- exynos_drm_fini_buf(dev, buf);
- return ERR_PTR(ret);
}
int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
exynos_gem_obj = to_exynos_gem_obj(obj);
- return &exynos_gem_obj->buffer->dma_addr;
+ return &exynos_gem_obj->dma_addr;
}
void exynos_drm_gem_put_dma_addr(struct drm_device *dev,
struct vm_area_struct *vma)
{
struct drm_device *drm_dev = exynos_gem_obj->base.dev;
- struct exynos_drm_gem_buf *buffer;
unsigned long vm_size;
int ret;
vm_size = vma->vm_end - vma->vm_start;
- /*
- * a buffer contains information to physically continuous memory
- * allocated by user request or at framebuffer creation.
- */
- buffer = exynos_gem_obj->buffer;
-
/* check if user-requested size is valid. */
- if (vm_size > buffer->size)
+ if (vm_size > exynos_gem_obj->size)
return -EINVAL;
- ret = dma_mmap_attrs(drm_dev->dev, vma, buffer->pages,
- buffer->dma_addr, buffer->size,
- &buffer->dma_attrs);
+ ret = dma_mmap_attrs(drm_dev->dev, vma, exynos_gem_obj->pages,
+ exynos_gem_obj->dma_addr, exynos_gem_obj->size,
+ &exynos_gem_obj->dma_attrs);
if (ret < 0) {
DRM_ERROR("failed to mmap.\n");
return ret;
void exynos_drm_gem_free_object(struct drm_gem_object *obj)
{
- struct exynos_drm_gem_obj *exynos_gem_obj;
- struct exynos_drm_gem_buf *buf;
-
- exynos_gem_obj = to_exynos_gem_obj(obj);
- buf = exynos_gem_obj->buffer;
-
exynos_drm_gem_destroy(to_exynos_gem_obj(obj));
}
{
struct drm_gem_object *obj = vma->vm_private_data;
struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj);
- struct exynos_drm_gem_buf *buf = exynos_gem_obj->buffer;
unsigned long pfn;
pgoff_t page_offset;
int ret;
page_offset = ((unsigned long)vmf->virtual_address -
vma->vm_start) >> PAGE_SHIFT;
- if (page_offset >= (buf->size >> PAGE_SHIFT)) {
+ if (page_offset >= (exynos_gem_obj->size >> PAGE_SHIFT)) {
DRM_ERROR("invalid page offset\n");
ret = -EINVAL;
goto out;
}
- pfn = page_to_pfn(buf->pages[page_offset]);
+ pfn = page_to_pfn(exynos_gem_obj->pages[page_offset]);
ret = vm_insert_mixed(vma, (unsigned long)vmf->virtual_address, pfn);
out:
struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj)
{
struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj);
- struct exynos_drm_gem_buf *buf = exynos_gem_obj->buffer;
int npages;
- npages = buf->size >> PAGE_SHIFT;
+ npages = exynos_gem_obj->size >> PAGE_SHIFT;
- return drm_prime_pages_to_sg(buf->pages, npages);
+ return drm_prime_pages_to_sg(exynos_gem_obj->pages, npages);
}
struct drm_gem_object *
struct sg_table *sgt)
{
struct exynos_drm_gem_obj *exynos_gem_obj;
- struct exynos_drm_gem_buf *buf;
int npages;
int ret;
- buf = kzalloc(sizeof(*buf), GFP_KERNEL);
- if (!buf)
- return ERR_PTR(-ENOMEM);
+ exynos_gem_obj = exynos_drm_gem_init(dev, attach->dmabuf->size);
+ if (IS_ERR(exynos_gem_obj)) {
+ ret = PTR_ERR(exynos_gem_obj);
+ goto err;
+ }
- buf->size = attach->dmabuf->size;
- buf->dma_addr = sg_dma_address(sgt->sgl);
+ exynos_gem_obj->dma_addr = sg_dma_address(sgt->sgl);
- npages = buf->size >> PAGE_SHIFT;
- buf->pages = drm_malloc_ab(npages, sizeof(struct page *));
- if (!buf->pages) {
+ npages = exynos_gem_obj->size >> PAGE_SHIFT;
+ exynos_gem_obj->pages = drm_malloc_ab(npages, sizeof(struct page *));
+ if (!exynos_gem_obj->pages) {
ret = -ENOMEM;
goto err;
}
- ret = drm_prime_sg_to_page_addr_arrays(sgt, buf->pages, NULL, npages);
+ ret = drm_prime_sg_to_page_addr_arrays(sgt, exynos_gem_obj->pages, NULL,
+ npages);
if (ret < 0)
goto err_free_large;
- exynos_gem_obj = exynos_drm_gem_init(dev, buf->size);
- if (IS_ERR(exynos_gem_obj)) {
- ret = PTR_ERR(exynos_gem_obj);
- goto err;
- }
-
if (sgt->nents == 1) {
/* always physically continuous memory if sgt->nents is 1. */
exynos_gem_obj->flags |= EXYNOS_BO_CONTIG;
return &exynos_gem_obj->base;
err_free_large:
- drm_free_large(buf->pages);
+ drm_free_large(exynos_gem_obj->pages);
err:
- kfree(buf);
+ drm_gem_object_release(&exynos_gem_obj->base);
+ kfree(exynos_gem_obj);
return ERR_PTR(ret);
}
#define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG)
-/*
- * exynos drm gem buffer structure.
- *
- * @cookie: cookie returned by dma_alloc_attrs
- * @kvaddr: kernel virtual address to allocated memory region.
- * @dma_addr: bus address(accessed by dma) to allocated memory region.
- * - this address could be physical address without IOMMU and
- * device address with IOMMU.
- * @pages: Array of backing pages.
- * @size: size of allocated memory region.
- */
-struct exynos_drm_gem_buf {
- void *cookie;
- void __iomem *kvaddr;
- dma_addr_t dma_addr;
- struct dma_attrs dma_attrs;
- struct page **pages;
- unsigned long size;
-};
-
/*
* exynos drm buffer structure.
*
* by user request or at framebuffer creation.
* continuous memory region allocated by user request
* or at framebuffer creation.
+ * @flags: indicate memory type to allocated buffer and cache attruibute.
* @size: size requested from user, in bytes and this size is aligned
* in page unit.
- * @flags: indicate memory type to allocated buffer and cache attruibute.
+ * @cookie: cookie returned by dma_alloc_attrs
+ * @kvaddr: kernel virtual address to allocated memory region.
+ * @dma_addr: bus address(accessed by dma) to allocated memory region.
+ * - this address could be physical address without IOMMU and
+ * device address with IOMMU.
+ * @pages: Array of backing pages.
*
* P.S. this object would be transferred to user as kms_bo.handle so
* user can access the buffer through kms_bo.handle.
*/
struct exynos_drm_gem_obj {
- struct drm_gem_object base;
- struct exynos_drm_gem_buf *buffer;
- unsigned long size;
- unsigned int flags;
+ struct drm_gem_object base;
+ unsigned int flags;
+ unsigned long size;
+ void *cookie;
+ void __iomem *kvaddr;
+ dma_addr_t dma_addr;
+ struct dma_attrs dma_attrs;
+ struct page **pages;
};
struct page **exynos_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask);
nr = exynos_drm_fb_get_buf_cnt(state->fb);
for (i = 0; i < nr; i++) {
- struct exynos_drm_gem_buf *buffer =
- exynos_drm_fb_buffer(state->fb, i);
+ struct exynos_drm_gem_obj *obj =
+ exynos_drm_fb_gem_obj(state->fb, i);
- if (!buffer) {
- DRM_DEBUG_KMS("buffer is null\n");
+ if (!obj) {
+ DRM_DEBUG_KMS("gem object is null\n");
return -EFAULT;
}
- exynos_plane->dma_addr[i] = buffer->dma_addr +
+ exynos_plane->dma_addr[i] = obj->dma_addr +
state->fb->offsets[i];
DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n",
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff