iommu/omap: Make use of domain_alloc and domain_free

Implement the new domain_alloc and domain_free call-backs
and remove the old domain_init/destroy ones.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 29 insertions, 20 deletions

diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index a4ba851825c2..a22c33d6a486 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -59,6 +59,7 @@ struct omap_iommu_domain {
         struct omap_iommu *iommu_dev;
         struct device *dev;
         spinlock_t lock;
+        struct iommu_domain domain;
 };
 
 #define MMU_LOCK_BASE_SHIFT     10
@@ -80,6 +81,15 @@ static struct platform_driver omap_iommu_driver;
 static struct kmem_cache *iopte_cachep;
 
 /**
+ * to_omap_domain - Get struct omap_iommu_domain from generic iommu_domain
+ * @dom:        generic iommu domain handle
+ **/
+static struct omap_iommu_domain *to_omap_domain(struct iommu_domain *dom)
+{
+        return container_of(dom, struct omap_iommu_domain, domain);
+}
+
+/**
  * omap_iommu_save_ctx - Save registers for pm off-mode support
  * @dev:        client device
  **/
@@ -901,7 +911,7 @@ static irqreturn_t iommu_fault_handler(int irq, void *data)
         u32 *iopgd, *iopte;
         struct omap_iommu *obj = data;
         struct iommu_domain *domain = obj->domain;
-        struct omap_iommu_domain *omap_domain = domain->priv;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
 
         if (!omap_domain->iommu_dev)
                 return IRQ_NONE;
@@ -1113,7 +1123,7 @@ static u32 iotlb_init_entry(struct iotlb_entry *e, u32 da, u32 pa, int pgsz)
 static int omap_iommu_map(struct iommu_domain *domain, unsigned long da,
                          phys_addr_t pa, size_t bytes, int prot)
 {
-        struct omap_iommu_domain *omap_domain = domain->priv;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
         struct omap_iommu *oiommu = omap_domain->iommu_dev;
         struct device *dev = oiommu->dev;
         struct iotlb_entry e;
@@ -1140,7 +1150,7 @@ static int omap_iommu_map(struct iommu_domain *domain, unsigned long da,
 static size_t omap_iommu_unmap(struct iommu_domain *domain, unsigned long da,
                             size_t size)
 {
-        struct omap_iommu_domain *omap_domain = domain->priv;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
         struct omap_iommu *oiommu = omap_domain->iommu_dev;
         struct device *dev = oiommu->dev;
 
@@ -1152,7 +1162,7 @@ static size_t omap_iommu_unmap(struct iommu_domain *domain, unsigned long da,
 static int
 omap_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
 {
-        struct omap_iommu_domain *omap_domain = domain->priv;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
         struct omap_iommu *oiommu;
         struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
         int ret = 0;
@@ -1212,17 +1222,20 @@ static void _omap_iommu_detach_dev(struct omap_iommu_domain *omap_domain,
 static void omap_iommu_detach_dev(struct iommu_domain *domain,
                                  struct device *dev)
 {
-        struct omap_iommu_domain *omap_domain = domain->priv;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
 
         spin_lock(&omap_domain->lock);
         _omap_iommu_detach_dev(omap_domain, dev);
         spin_unlock(&omap_domain->lock);
 }
 
-static int omap_iommu_domain_init(struct iommu_domain *domain)
+static struct iommu_domain *omap_iommu_domain_alloc(unsigned type)
 {
         struct omap_iommu_domain *omap_domain;
 
+        if (type != IOMMU_DOMAIN_UNMANAGED)
+                return NULL;
+
         omap_domain = kzalloc(sizeof(*omap_domain), GFP_KERNEL);
         if (!omap_domain) {
                 pr_err("kzalloc failed\n");
@@ -1244,25 +1257,21 @@ static int omap_iommu_domain_init(struct iommu_domain *domain)
         clean_dcache_area(omap_domain->pgtable, IOPGD_TABLE_SIZE);
         spin_lock_init(&omap_domain->lock);
 
-        domain->priv = omap_domain;
+        omap_domain->domain.geometry.aperture_start = 0;
+        omap_domain->domain.geometry.aperture_end   = (1ULL << 32) - 1;
+        omap_domain->domain.geometry.force_aperture = true;
 
-        domain->geometry.aperture_start = 0;
-        domain->geometry.aperture_end   = (1ULL << 32) - 1;
-        domain->geometry.force_aperture = true;
-
-        return 0;
+        return &omap_domain->domain;
 
 fail_nomem:
         kfree(omap_domain);
 out:
-        return -ENOMEM;
+        return NULL;
 }
 
-static void omap_iommu_domain_destroy(struct iommu_domain *domain)
+static void omap_iommu_domain_free(struct iommu_domain *domain)
 {
-        struct omap_iommu_domain *omap_domain = domain->priv;
-
-        domain->priv = NULL;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
 
         /*
          * An iommu device is still attached
@@ -1278,7 +1287,7 @@ static void omap_iommu_domain_destroy(struct iommu_domain *domain)
 static phys_addr_t omap_iommu_iova_to_phys(struct iommu_domain *domain,
                                           dma_addr_t da)
 {
-        struct omap_iommu_domain *omap_domain = domain->priv;
+        struct omap_iommu_domain *omap_domain = to_omap_domain(domain);
         struct omap_iommu *oiommu = omap_domain->iommu_dev;
         struct device *dev = oiommu->dev;
         u32 *pgd, *pte;
@@ -1358,8 +1367,8 @@ static void omap_iommu_remove_device(struct device *dev)
 }
 
 static const struct iommu_ops omap_iommu_ops = {
-        .domain_init    = omap_iommu_domain_init,
-        .domain_destroy = omap_iommu_domain_destroy,
+        .domain_alloc   = omap_iommu_domain_alloc,
+        .domain_free    = omap_iommu_domain_free,
         .attach_dev     = omap_iommu_attach_dev,
         .detach_dev     = omap_iommu_detach_dev,
         .map            = omap_iommu_map,