[PATCH 04/20] iommu/fsl_pamu: merge iommu_alloc_dma_domain into fsl_pamu_domain_alloc

Christoph Hellwig
2021-04-01T17:44:04Z

Keep the functionality to allocate the domain together.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Li Yang <leoyang.li@nxp.com>
---
drivers/iommu/fsl_pamu_domain.c | 34 ++++++++++-----------------------
1 file changed, 10 insertions(+), 24 deletions(-)

diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index 7bd08ddad07779..a4da5597755d3d 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -292,25 +292,6 @@ static int check_size(u64 size, dma_addr_t iova)
return 0;
}

-static struct fsl_dma_domain *iommu_alloc_dma_domain(void)
-{
- struct fsl_dma_domain *domain;
-
- domain = kmem_cache_zalloc(fsl_pamu_domain_cache, GFP_KERNEL);
- if (!domain)
- return NULL;
-
- domain->stash_id = ~(u32)0;
- domain->snoop_id = ~(u32)0;
- domain->win_cnt = pamu_get_max_subwin_cnt();
-
- INIT_LIST_HEAD(&domain->devices);
-
- spin_lock_init(&domain->domain_lock);
-
- return domain;
-}
-
static void remove_device_ref(struct device_domain_info *info, u32 win_cnt)
{
unsigned long flags;
@@ -412,12 +393,17 @@ static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type)
if (type != IOMMU_DOMAIN_UNMANAGED)
return NULL;

- dma_domain = iommu_alloc_dma_domain();
- if (!dma_domain) {
- pr_debug("dma_domain allocation failed\n");
+ dma_domain = kmem_cache_zalloc(fsl_pamu_domain_cache, GFP_KERNEL);
+ if (!dma_domain)
return NULL;
- }
- /* defaul geometry 64 GB i.e. maximum system address */
+
+ dma_domain->stash_id = ~(u32)0;
+ dma_domain->snoop_id = ~(u32)0;
+ dma_domain->win_cnt = pamu_get_max_subwin_cnt();
+ INIT_LIST_HEAD(&dma_domain->devices);
+ spin_lock_init(&dma_domain->domain_lock);
+
+ /* default geometry 64 GB i.e. maximum system address */
dma_domain->iommu_domain. geometry.aperture_start = 0;
dma_domain->iommu_domain.geometry.aperture_end = (1ULL << 36) - 1;
dma_domain->iommu_domain.geometry.force_aperture = true;
--
2.30.1