diff options
| author | Yong Wu <yong.wu@mediatek.com> | 2021-01-11 14:19:05 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-02-01 14:31:18 +0300 |
| commit | 4f956c97d26be65aea580e943f470ec70f7b0bb6 (patch) | |
| tree | 844b04a366b883c8acd8f4469e62401272124fad /drivers/iommu | |
| parent | 08500c43d4f70c1e8be6beda8a2aea0ecfb845d8 (diff) | |
| download | linux-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.c | 31 |
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) |