mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
bdad5c53e1
When we move to 64 bit addressing for a5xx and a6xx targets we will start seeing pagefaults at larger addresses so format them appropriately in the log message for easier debugging. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com> Signed-off-by: Rob Clark <robdclark@chromium.org>
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "msm_drv.h"
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#include "msm_mmu.h"
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struct msm_iommu {
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struct msm_mmu base;
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struct iommu_domain *domain;
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};
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#define to_msm_iommu(x) container_of(x, struct msm_iommu, base)
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static int msm_fault_handler(struct iommu_domain *domain, struct device *dev,
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unsigned long iova, int flags, void *arg)
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{
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struct msm_iommu *iommu = arg;
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if (iommu->base.handler)
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return iommu->base.handler(iommu->base.arg, iova, flags);
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pr_warn_ratelimited("*** fault: iova=%16lx, flags=%d\n", iova, flags);
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return 0;
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}
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static int msm_iommu_attach(struct msm_mmu *mmu, const char * const *names,
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int cnt)
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{
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struct msm_iommu *iommu = to_msm_iommu(mmu);
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return iommu_attach_device(iommu->domain, mmu->dev);
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}
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static void msm_iommu_detach(struct msm_mmu *mmu, const char * const *names,
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int cnt)
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{
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struct msm_iommu *iommu = to_msm_iommu(mmu);
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iommu_detach_device(iommu->domain, mmu->dev);
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}
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static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova,
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struct sg_table *sgt, unsigned len, int prot)
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{
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struct msm_iommu *iommu = to_msm_iommu(mmu);
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size_t ret;
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ret = iommu_map_sg(iommu->domain, iova, sgt->sgl, sgt->nents, prot);
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WARN_ON(!ret);
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return (ret == len) ? 0 : -EINVAL;
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}
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static int msm_iommu_unmap(struct msm_mmu *mmu, uint64_t iova, unsigned len)
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{
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struct msm_iommu *iommu = to_msm_iommu(mmu);
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iommu_unmap(iommu->domain, iova, len);
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return 0;
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}
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static void msm_iommu_destroy(struct msm_mmu *mmu)
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{
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struct msm_iommu *iommu = to_msm_iommu(mmu);
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iommu_domain_free(iommu->domain);
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kfree(iommu);
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}
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static const struct msm_mmu_funcs funcs = {
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.attach = msm_iommu_attach,
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.detach = msm_iommu_detach,
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.map = msm_iommu_map,
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.unmap = msm_iommu_unmap,
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.destroy = msm_iommu_destroy,
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};
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struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain)
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{
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struct msm_iommu *iommu;
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iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
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if (!iommu)
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return ERR_PTR(-ENOMEM);
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iommu->domain = domain;
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msm_mmu_init(&iommu->base, dev, &funcs);
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iommu_set_fault_handler(domain, msm_fault_handler, iommu);
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return &iommu->base;
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}
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