diff options
| author | Yajun Li <yajunl@codeaurora.org> | 2016-06-09 21:55:53 +0800 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-04-06 01:54:36 -0700 |
| commit | 8f626889b9030e82473939c512eb41778f5bf3c5 (patch) | |
| tree | 9514cd35b18dcea06c6d5144d54552e0c9b95540 /drivers/gpu | |
| parent | 280560eaacd0a1c79c9b39d275db4e816e11576b (diff) | |
drm:msm add iommu fault handler function
Adding iommu fault handler callback to iommu driver, which will be
called when memory fault happens.
Change-Id: Ia2486fe167b889633ea4fb4c42601791efda133c
Signed-off-by: Yajun Li <yajunl@codeaurora.org>
Signed-off-by: Yunyun Cao <yunyunc@codeaurora.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_smmu.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_smmu.c b/drivers/gpu/drm/msm/msm_smmu.c index c99f51e09700..172aba387982 100644 --- a/drivers/gpu/drm/msm/msm_smmu.c +++ b/drivers/gpu/drm/msm/msm_smmu.c @@ -53,6 +53,17 @@ struct msm_smmu_domain { #define to_msm_smmu(x) container_of(x, struct msm_smmu, base) #define msm_smmu_to_client(smmu) (smmu->client) + +static int msm_smmu_fault_handler(struct iommu_domain *iommu, + struct device *dev, unsigned long iova, int flags, void *arg) +{ + + dev_info(dev, "%s: iova=0x%08lx, flags=0x%x, iommu=%p\n", __func__, + iova, flags, iommu); + return 0; +} + + static int _msm_smmu_create_mapping(struct msm_smmu_client *client, const struct msm_smmu_domain *domain); @@ -362,6 +373,7 @@ struct msm_mmu *msm_smmu_new(struct device *dev, { struct msm_smmu *smmu; struct device *client_dev; + struct msm_smmu_client *client; smmu = kzalloc(sizeof(*smmu), GFP_KERNEL); if (!smmu) @@ -376,6 +388,11 @@ struct msm_mmu *msm_smmu_new(struct device *dev, smmu->client_dev = client_dev; msm_mmu_init(&smmu->base, dev, &funcs); + client = msm_smmu_to_client(smmu); + if (client) + iommu_set_fault_handler(client->mmu_mapping->domain, + msm_smmu_fault_handler, dev); + return &smmu->base; } |