Release 4.17 drivers/gpu/drm/msm/msm_gem_vma.c
/*
* Copyright (C) 2016 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "msm_drv.h"
#include "msm_gem.h"
#include "msm_mmu.h"
static void
msm_gem_address_space_destroy(struct kref *kref)
{
struct msm_gem_address_space *aspace = container_of(kref,
struct msm_gem_address_space, kref);
drm_mm_takedown(&aspace->mm);
if (aspace->mmu)
aspace->mmu->funcs->destroy(aspace->mmu);
kfree(aspace);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jordan Crouse | 58 | 100.00% | 1 | 100.00% |
| Total | 58 | 100.00% | 1 | 100.00% |
void msm_gem_address_space_put(struct msm_gem_address_space *aspace)
{
if (aspace)
kref_put(&aspace->kref, msm_gem_address_space_destroy);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jordan Crouse | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
void
msm_gem_unmap_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma, struct sg_table *sgt)
{
if (!aspace || !vma->iova)
return;
if (aspace->mmu) {
unsigned size = vma->node.size << PAGE_SHIFT;
aspace->mmu->funcs->unmap(aspace->mmu, vma->iova, sgt, size);
}
spin_lock(&aspace->lock);
drm_mm_remove_node(&vma->node);
spin_unlock(&aspace->lock);
vma->iova = 0;
msm_gem_address_space_put(aspace);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 82 | 77.36% | 1 | 25.00% |
| Sushmita Susheelendra | 16 | 15.09% | 1 | 25.00% |
| Jordan Crouse | 5 | 4.72% | 1 | 25.00% |
| Hans Verkuil | 3 | 2.83% | 1 | 25.00% |
| Total | 106 | 100.00% | 4 | 100.00% |
int
msm_gem_map_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma, struct sg_table *sgt, int npages)
{
int ret;
spin_lock(&aspace->lock);
if (WARN_ON(drm_mm_node_allocated(&vma->node))) {
spin_unlock(&aspace->lock);
return 0;
}
ret = drm_mm_insert_node(&aspace->mm, &vma->node, npages);
spin_unlock(&aspace->lock);
if (ret)
return ret;
vma->iova = vma->node.start << PAGE_SHIFT;
if (aspace->mmu) {
unsigned size = npages << PAGE_SHIFT;
ret = aspace->mmu->funcs->map(aspace->mmu, vma->iova, sgt,
size, IOMMU_READ | IOMMU_WRITE);
}
/* Get a reference to the aspace to keep it around */
kref_get(&aspace->kref);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 126 | 79.75% | 1 | 33.33% |
| Sushmita Susheelendra | 26 | 16.46% | 1 | 33.33% |
| Jordan Crouse | 6 | 3.80% | 1 | 33.33% |
| Total | 158 | 100.00% | 3 | 100.00% |
struct msm_gem_address_space *
msm_gem_address_space_create(struct device *dev, struct iommu_domain *domain,
const char *name)
{
struct msm_gem_address_space *aspace;
u64 size = domain->geometry.aperture_end -
domain->geometry.aperture_start;
aspace = kzalloc(sizeof(*aspace), GFP_KERNEL);
if (!aspace)
return ERR_PTR(-ENOMEM);
spin_lock_init(&aspace->lock);
aspace->name = name;
aspace->mmu = msm_iommu_new(dev, domain);
drm_mm_init(&aspace->mm, (domain->geometry.aperture_start >> PAGE_SHIFT),
size >> PAGE_SHIFT);
kref_init(&aspace->kref);
return aspace;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 93 | 74.40% | 1 | 25.00% |
| Jordan Crouse | 24 | 19.20% | 2 | 50.00% |
| Sushmita Susheelendra | 8 | 6.40% | 1 | 25.00% |
| Total | 125 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 311 | 64.66% | 1 | 20.00% |
| Jordan Crouse | 117 | 24.32% | 2 | 40.00% |
| Sushmita Susheelendra | 50 | 10.40% | 1 | 20.00% |
| Hans Verkuil | 3 | 0.62% | 1 | 20.00% |
| Total | 481 | 100.00% | 5 | 100.00% |
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