From: Joerg Roedel jroe...@suse.de
Implement domain_alloc and domain_free iommu-ops as a
replacement for domain_init/domain_destroy.
Signed-off-by: Joerg Roedel jroe...@suse.de
---
drivers/iommu/tegra-smmu.c | 41 +++--
1 file changed, 23 insertions(+), 18 deletions(-)
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 6e134c7..7208297 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -31,7 +31,7 @@ struct tegra_smmu {
};
struct tegra_smmu_as {
- struct iommu_domain *domain;
+ struct iommu_domain domain;
struct tegra_smmu *smmu;
unsigned int use_count;
struct page *count;
@@ -40,6 +40,11 @@ struct tegra_smmu_as {
u32 attr;
};
+static struct tegra_smmu_as *to_smmu_as(struct iommu_domain *dom)
+{
+ return container_of(dom, struct tegra_smmu_as, domain);
+}
+
static inline void smmu_writel(struct tegra_smmu *smmu, u32 value,
unsigned long offset)
{
@@ -224,30 +229,32 @@ static bool tegra_smmu_capable(enum iommu_cap cap)
return false;
}
-static int tegra_smmu_domain_init(struct iommu_domain *domain)
+static struct iommu_domain *tegra_smmu_domain_alloc(unsigned type)
{
struct tegra_smmu_as *as;
unsigned int i;
uint32_t *pd;
+ if (type != IOMMU_DOMAIN_UNMANAGED)
+ return NULL;
+
as = kzalloc(sizeof(*as), GFP_KERNEL);
if (!as)
- return -ENOMEM;
+ return NULL;
as-attr = SMMU_PD_READABLE | SMMU_PD_WRITABLE | SMMU_PD_NONSECURE;
- as-domain = domain;
as-pd = alloc_page(GFP_KERNEL | __GFP_DMA);
if (!as-pd) {
kfree(as);
- return -ENOMEM;
+ return NULL;
}
as-count = alloc_page(GFP_KERNEL);
if (!as-count) {
__free_page(as-pd);
kfree(as);
- return -ENOMEM;
+ return NULL;
}
/* clear PDEs */
@@ -264,14 +271,12 @@ static int tegra_smmu_domain_init(struct iommu_domain
*domain)
for (i = 0; i SMMU_NUM_PDE; i++)
pd[i] = 0;
- domain-priv = as;
-
- return 0;
+ return as-domain;
}
-static void tegra_smmu_domain_destroy(struct iommu_domain *domain)
+static void tegra_smmu_domain_free(struct iommu_domain *domain)
{
- struct tegra_smmu_as *as = domain-priv;
+ struct tegra_smmu_as *as = to_smmu_as(domain);
/* TODO: free page directory and page tables */
ClearPageReserved(as-pd);
@@ -395,7 +400,7 @@ static int tegra_smmu_attach_dev(struct iommu_domain
*domain,
struct device *dev)
{
struct tegra_smmu *smmu = dev-archdata.iommu;
- struct tegra_smmu_as *as = domain-priv;
+ struct tegra_smmu_as *as = to_smmu_as(domain);
struct device_node *np = dev-of_node;
struct of_phandle_args args;
unsigned int index = 0;
@@ -428,7 +433,7 @@ static int tegra_smmu_attach_dev(struct iommu_domain
*domain,
static void tegra_smmu_detach_dev(struct iommu_domain *domain, struct device
*dev)
{
- struct tegra_smmu_as *as = domain-priv;
+ struct tegra_smmu_as *as = to_smmu_as(domain);
struct device_node *np = dev-of_node;
struct tegra_smmu *smmu = as-smmu;
struct of_phandle_args args;
@@ -524,7 +529,7 @@ static void as_put_pte(struct tegra_smmu_as *as, dma_addr_t
iova)
static int tegra_smmu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot)
{
- struct tegra_smmu_as *as = domain-priv;
+ struct tegra_smmu_as *as = to_smmu_as(domain);
struct tegra_smmu *smmu = as-smmu;
unsigned long offset;
struct page *page;
@@ -548,7 +553,7 @@ static int tegra_smmu_map(struct iommu_domain *domain,
unsigned long iova,
static size_t tegra_smmu_unmap(struct iommu_domain *domain, unsigned long iova,
size_t size)
{
- struct tegra_smmu_as *as = domain-priv;
+ struct tegra_smmu_as *as = to_smmu_as(domain);
struct tegra_smmu *smmu = as-smmu;
unsigned long offset;
struct page *page;
@@ -572,7 +577,7 @@ static size_t tegra_smmu_unmap(struct iommu_domain *domain,
unsigned long iova,
static phys_addr_t tegra_smmu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
- struct tegra_smmu_as *as = domain-priv;
+ struct tegra_smmu_as *as = to_smmu_as(domain);
struct page *page;
unsigned long pfn;
u32 *pte;
@@ -633,8 +638,8 @@ static void tegra_smmu_remove_device(struct device *dev)
static const struct iommu_ops tegra_smmu_ops = {
.capable = tegra_smmu_capable,
- .domain_init = tegra_smmu_domain_init,
- .domain_destroy = tegra_smmu_domain_destroy,
+
