From 3236130b5d2a2d868b8273d7e2fff4bbde4be813 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date: Wed, 2 Nov 2022 20:54:48 +0300
Subject: drm/msm: move domain allocation into msm_iommu_new()
After the msm_iommu instance is created, the IOMMU domain is completely
handled inside the msm_iommu code. Move the iommu_domain_alloc() call
into the msm_iommu_new() to simplify callers code.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/509615/
Link: https://lore.kernel.org/r/20221102175449.452283-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
drivers/gpu/drm/msm/msm_iommu.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
(limited to 'drivers/gpu/drm/msm/msm_iommu.c')
diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c
index 5577cea7c009..c2507582ecf3 100644
--- a/drivers/gpu/drm/msm/msm_iommu.c
+++ b/drivers/gpu/drm/msm/msm_iommu.c
@@ -186,6 +186,13 @@ int msm_iommu_pagetable_params(struct msm_mmu *mmu,
return 0;
}
+struct iommu_domain_geometry *msm_iommu_get_geometry(struct msm_mmu *mmu)
+{
+ struct msm_iommu *iommu = to_msm_iommu(mmu);
+
+ return &iommu->domain->geometry;
+}
+
static const struct msm_mmu_funcs pagetable_funcs = {
.map = msm_iommu_pagetable_map,
.unmap = msm_iommu_pagetable_unmap,
@@ -367,17 +374,23 @@ static const struct msm_mmu_funcs funcs = {
.resume_translation = msm_iommu_resume_translation,
};
-struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain)
+struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks)
{
+ struct iommu_domain *domain;
struct msm_iommu *iommu;
int ret;
+ domain = iommu_domain_alloc(dev->bus);
if (!domain)
- return ERR_PTR(-ENODEV);
+ return NULL;
+
+ iommu_set_pgtable_quirks(domain, quirks);
iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
- if (!iommu)
+ if (!iommu) {
+ iommu_domain_free(domain);
return ERR_PTR(-ENOMEM);
+ }
iommu->domain = domain;
msm_mmu_init(&iommu->base, dev, &funcs, MSM_MMU_IOMMU);
@@ -386,6 +399,7 @@ struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain)
ret = iommu_attach_device(iommu->domain, dev);
if (ret) {
+ iommu_domain_free(domain);
kfree(iommu);
return ERR_PTR(ret);
}
--
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