Release 4.7 drivers/gpu/drm/udl/udl_gem.c
/*
* Copyright (C) 2012 Red Hat
*
* This file is subject to the terms and conditions of the GNU General Public
* License v2. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <drm/drmP.h>
#include "udl_drv.h"
#include <linux/shmem_fs.h>
#include <linux/dma-buf.h>
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size)
{
struct udl_gem_object *obj;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (obj == NULL)
return NULL;
if (drm_gem_object_init(dev, &obj->base, size) != 0) {
kfree(obj);
return NULL;
}
obj->flags = UDL_BO_CACHEABLE;
return obj;
}
Contributors
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| dave airlie | dave airlie | 71 | 92.21% | 1 | 50.00% |
| haixia shi | haixia shi | 6 | 7.79% | 1 | 50.00% |
| Total | 77 | 100.00% | 2 | 100.00% |
static int
udl_gem_create(struct drm_file *file,
struct drm_device *dev,
uint64_t size,
uint32_t *handle_p)
{
struct udl_gem_object *obj;
int ret;
u32 handle;
size = roundup(size, PAGE_SIZE);
obj = udl_gem_alloc_object(dev, size);
if (obj == NULL)
return -ENOMEM;
ret = drm_gem_handle_create(file, &obj->base, &handle);
if (ret) {
drm_gem_object_release(&obj->base);
kfree(obj);
return ret;
}
drm_gem_object_unreference_unlocked(&obj->base);
*handle_p = handle;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 114 | 99.13% | 1 | 50.00% |
| daniel vetter | daniel vetter | 1 | 0.87% | 1 | 50.00% |
| Total | 115 | 100.00% | 2 | 100.00% |
static void update_vm_cache_attr(struct udl_gem_object *obj,
struct vm_area_struct *vma)
{
DRM_DEBUG_KMS("flags = 0x%x\n", obj->flags);
/* non-cacheable as default. */
if (obj->flags & UDL_BO_CACHEABLE) {
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
} else if (obj->flags & UDL_BO_WC) {
vma->vm_page_prot =
pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
} else {
vma->vm_page_prot =
pgprot_noncached(vm_get_page_prot(vma->vm_flags));
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| haixia shi | haixia shi | 89 | 100.00% | 1 | 100.00% |
| Total | 89 | 100.00% | 1 | 100.00% |
int udl_dumb_create(struct drm_file *file,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
args->pitch = args->width * DIV_ROUND_UP(args->bpp, 8);
args->size = args->pitch * args->height;
return udl_gem_create(file, dev,
args->size, &args->handle);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 62 | 93.94% | 1 | 50.00% |
| david herrmann | david herrmann | 4 | 6.06% | 1 | 50.00% |
| Total | 66 | 100.00% | 2 | 100.00% |
int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
{
int ret;
ret = drm_gem_mmap(filp, vma);
if (ret)
return ret;
vma->vm_flags &= ~VM_PFNMAP;
vma->vm_flags |= VM_MIXEDMAP;
update_vm_cache_attr(to_udl_bo(vma->vm_private_data), vma);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| konstantin khlebnikov | konstantin khlebnikov | 50 | 80.65% | 1 | 50.00% |
| haixia shi | haixia shi | 12 | 19.35% | 1 | 50.00% |
| Total | 62 | 100.00% | 2 | 100.00% |
int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct udl_gem_object *obj = to_udl_bo(vma->vm_private_data);
struct page *page;
unsigned int page_offset;
int ret = 0;
page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >>
PAGE_SHIFT;
if (!obj->pages)
return VM_FAULT_SIGBUS;
page = obj->pages[page_offset];
ret = vm_insert_page(vma, (unsigned long)vmf->virtual_address, page);
switch (ret) {
case -EAGAIN:
case 0:
case -ERESTARTSYS:
return VM_FAULT_NOPAGE;
case -ENOMEM:
return VM_FAULT_OOM;
default:
return VM_FAULT_SIGBUS;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 126 | 100.00% | 1 | 100.00% |
| Total | 126 | 100.00% | 1 | 100.00% |
int udl_gem_get_pages(struct udl_gem_object *obj)
{
struct page **pages;
if (obj->pages)
return 0;
pages = drm_gem_get_pages(&obj->base);
if (IS_ERR(pages))
return PTR_ERR(pages);
obj->pages = pages;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 48 | 84.21% | 1 | 33.33% |
| rob clark | rob clark | 8 | 14.04% | 1 | 33.33% |
| al viro | al viro | 1 | 1.75% | 1 | 33.33% |
| Total | 57 | 100.00% | 3 | 100.00% |
void udl_gem_put_pages(struct udl_gem_object *obj)
{
if (obj->base.import_attach) {
drm_free_large(obj->pages);
obj->pages = NULL;
return;
}
drm_gem_put_pages(&obj->base, obj->pages, false, false);
obj->pages = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| rob clark | rob clark | 32 | 57.14% | 2 | 66.67% |
| dave airlie | dave airlie | 24 | 42.86% | 1 | 33.33% |
| Total | 56 | 100.00% | 3 | 100.00% |
int udl_gem_vmap(struct udl_gem_object *obj)
{
int page_count = obj->base.size / PAGE_SIZE;
int ret;
if (obj->base.import_attach) {
obj->vmapping = dma_buf_vmap(obj->base.import_attach->dmabuf);
if (!obj->vmapping)
return -ENOMEM;
return 0;
}
ret = udl_gem_get_pages(obj);
if (ret)
return ret;
obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
if (!obj->vmapping)
return -ENOMEM;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 108 | 100.00% | 2 | 100.00% |
| Total | 108 | 100.00% | 2 | 100.00% |
void udl_gem_vunmap(struct udl_gem_object *obj)
{
if (obj->base.import_attach) {
dma_buf_vunmap(obj->base.import_attach->dmabuf, obj->vmapping);
return;
}
vunmap(obj->vmapping);
udl_gem_put_pages(obj);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 48 | 100.00% | 2 | 100.00% |
| Total | 48 | 100.00% | 2 | 100.00% |
void udl_gem_free_object(struct drm_gem_object *gem_obj)
{
struct udl_gem_object *obj = to_udl_bo(gem_obj);
if (obj->vmapping)
udl_gem_vunmap(obj);
if (gem_obj->import_attach) {
drm_prime_gem_destroy(gem_obj, obj->sg);
put_device(gem_obj->dev->dev);
}
if (obj->pages)
udl_gem_put_pages(obj);
drm_gem_free_mmap_offset(gem_obj);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 73 | 100.00% | 4 | 100.00% |
| Total | 73 | 100.00% | 4 | 100.00% |
/* the dumb interface doesn't work with the GEM straight MMAP
interface, it expects to do MMAP on the drm fd, like normal */
int udl_gem_mmap(struct drm_file *file, struct drm_device *dev,
uint32_t handle, uint64_t *offset)
{
struct udl_gem_object *gobj;
struct drm_gem_object *obj;
int ret = 0;
mutex_lock(&dev->struct_mutex);
obj = drm_gem_object_lookup(file, handle);
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
gobj = to_udl_bo(obj);
ret = udl_gem_get_pages(gobj);
if (ret)
goto out;
ret = drm_gem_create_mmap_offset(obj);
if (ret)
goto out;
*offset = drm_vma_node_offset_addr(&gobj->base.vma_node);
out:
drm_gem_object_unreference(&gobj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 133 | 94.33% | 1 | 33.33% |
| david herrmann | david herrmann | 5 | 3.55% | 1 | 33.33% |
| dan carpenter | dan carpenter | 3 | 2.13% | 1 | 33.33% |
| Total | 141 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dave airlie | dave airlie | 820 | 79.46% | 4 | 28.57% |
| haixia shi | haixia shi | 107 | 10.37% | 1 | 7.14% |
| konstantin khlebnikov | konstantin khlebnikov | 50 | 4.84% | 1 | 7.14% |
| rob clark | rob clark | 40 | 3.88% | 2 | 14.29% |
| david herrmann | david herrmann | 9 | 0.87% | 2 | 14.29% |
| dan carpenter | dan carpenter | 3 | 0.29% | 1 | 7.14% |
| daniel vetter | daniel vetter | 1 | 0.10% | 1 | 7.14% |
| david howells | david howells | 1 | 0.10% | 1 | 7.14% |
| al viro | al viro | 1 | 0.10% | 1 | 7.14% |
| Total | 1032 | 100.00% | 14 | 100.00% |
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