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authorYong Wu <yong.wu@mediatek.com>2021-01-11 14:19:05 +0300
committerWill Deacon <will@kernel.org>2021-02-01 14:31:18 +0300
commit4f956c97d26be65aea580e943f470ec70f7b0bb6 (patch)
tree844b04a366b883c8acd8f4469e62401272124fad /drivers/iommu
parent08500c43d4f70c1e8be6beda8a2aea0ecfb845d8 (diff)
downloadlinux-4f956c97d26be65aea580e943f470ec70f7b0bb6.tar.xz
iommu/mediatek: Move domain_finalise into attach_device
Currently domain_alloc only has a parameter(type), We have no chance to input some special data. This patch moves the domain_finalise into attach_device which has the device information, then could update the domain's geometry.aperture ranges for each a device. Strictly, I should use the data from mtk_iommu_get_m4u_data as the parameter of mtk_iommu_domain_finalise in this patch. but dom->data only is used in tlb ops in which the data is get from the m4u_list, thus it is ok here. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Link: https://lore.kernel.org/r/20210111111914.22211-25-yong.wu@mediatek.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/mtk_iommu.c31
1 files changed, 12 insertions, 19 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index f1941608ccb7..d321d09ac4c2 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -328,10 +328,9 @@ static void mtk_iommu_config(struct mtk_iommu_data *data,
}
}
-static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom)
+static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom,
+ struct mtk_iommu_data *data)
{
- struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();
-
dom->cfg = (struct io_pgtable_cfg) {
.quirks = IO_PGTABLE_QUIRK_ARM_NS |
IO_PGTABLE_QUIRK_NO_PERMS |
@@ -352,7 +351,6 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom)
return -EINVAL;
}
- dom->data = data;
/* Update our support page sizes bitmap */
dom->domain.pgsize_bitmap = dom->cfg.pgsize_bitmap;
return 0;
@@ -369,30 +367,19 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type)
if (!dom)
return NULL;
- if (iommu_get_dma_cookie(&dom->domain))
- goto free_dom;
-
- if (mtk_iommu_domain_finalise(dom))
- goto put_dma_cookie;
+ if (iommu_get_dma_cookie(&dom->domain)) {
+ kfree(dom);
+ return NULL;
+ }
dom->domain.geometry.aperture_start = 0;
dom->domain.geometry.aperture_end = DMA_BIT_MASK(32);
dom->domain.geometry.force_aperture = true;
-
return &dom->domain;
-
-put_dma_cookie:
- iommu_put_dma_cookie(&dom->domain);
-free_dom:
- kfree(dom);
- return NULL;
}
static void mtk_iommu_domain_free(struct iommu_domain *domain)
{
- struct mtk_iommu_domain *dom = to_mtk_domain(domain);
-
- free_io_pgtable_ops(dom->iop);
iommu_put_dma_cookie(domain);
kfree(to_mtk_domain(domain));
}
@@ -408,6 +395,12 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
if (!data)
return -ENODEV;
+ if (!dom->data) {
+ if (mtk_iommu_domain_finalise(dom, data))
+ return -ENODEV;
+ dom->data = data;
+ }
+
if (!data->m4u_dom) { /* Initialize the M4U HW */
ret = pm_runtime_resume_and_get(m4udev);
if (ret < 0)