Release 4.12 drivers/gpu/drm/msm/msm_iommu.c
/*
* Copyright (C) 2013 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_mmu.h"
struct msm_iommu {
struct msm_mmu base;
struct iommu_domain *domain;
};
#define to_msm_iommu(x) container_of(x, struct msm_iommu, base)
static int msm_fault_handler(struct iommu_domain *domain, struct device *dev,
unsigned long iova, int flags, void *arg)
{
struct msm_iommu *iommu = arg;
if (iommu->base.handler)
return iommu->base.handler(iommu->base.arg, iova, flags);
pr_warn_ratelimited("*** fault: iova=%08lx, flags=%d\n", iova, flags);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 72 | 100.00% | 3 | 100.00% |
| Total | 72 | 100.00% | 3 | 100.00% |
static int msm_iommu_attach(struct msm_mmu *mmu, const char * const *names,
int cnt)
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
int ret;
pm_runtime_get_sync(mmu->dev);
ret = iommu_attach_device(iommu->domain, mmu->dev);
pm_runtime_put_sync(mmu->dev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 64 | 100.00% | 4 | 100.00% |
| Total | 64 | 100.00% | 4 | 100.00% |
static void msm_iommu_detach(struct msm_mmu *mmu, const char * const *names,
int cnt)
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
pm_runtime_get_sync(mmu->dev);
iommu_detach_device(iommu->domain, mmu->dev);
pm_runtime_put_sync(mmu->dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Stephane Viau | 38 | 67.86% | 1 | 25.00% |
| Rob Clark | 18 | 32.14% | 3 | 75.00% |
| Total | 56 | 100.00% | 4 | 100.00% |
static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova,
struct sg_table *sgt, unsigned len, int prot)
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
size_t ret;
// pm_runtime_get_sync(mmu->dev);
ret = iommu_map_sg(iommu->domain, iova, sgt->sgl, sgt->nents, prot);
// pm_runtime_put_sync(mmu->dev);
WARN_ON(ret < 0);
return (ret == len) ? 0 : -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 80 | 100.00% | 4 | 100.00% |
| Total | 80 | 100.00% | 4 | 100.00% |
static int msm_iommu_unmap(struct msm_mmu *mmu, uint64_t iova,
struct sg_table *sgt, unsigned len)
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
pm_runtime_get_sync(mmu->dev);
iommu_unmap(iommu->domain, iova, len);
pm_runtime_put_sync(mmu->dev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 60 | 100.00% | 4 | 100.00% |
| Total | 60 | 100.00% | 4 | 100.00% |
static void msm_iommu_destroy(struct msm_mmu *mmu)
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
iommu_domain_free(iommu->domain);
kfree(iommu);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
static const struct msm_mmu_funcs funcs = {
.attach = msm_iommu_attach,
.detach = msm_iommu_detach,
.map = msm_iommu_map,
.unmap = msm_iommu_unmap,
.destroy = msm_iommu_destroy,
};
struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain)
{
struct msm_iommu *iommu;
iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
if (!iommu)
return ERR_PTR(-ENOMEM);
iommu->domain = domain;
msm_mmu_init(&iommu->base, dev, &funcs);
iommu_set_fault_handler(domain, msm_fault_handler, iommu);
return &iommu->base;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 81 | 100.00% | 3 | 100.00% |
| Total | 81 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 464 | 91.52% | 8 | 88.89% |
| Stephane Viau | 43 | 8.48% | 1 | 11.11% |
| Total | 507 | 100.00% | 9 | 100.00% |
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