diff options
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 46 |
1 files changed, 27 insertions, 19 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index fc13dd5..5575c3d 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -343,6 +343,7 @@ struct arm_smmu_domain { struct arm_smmu_cfg cfg; enum arm_smmu_domain_stage stage; struct mutex init_mutex; /* Protects smmu pointer */ + struct iommu_domain domain; }; static struct iommu_ops arm_smmu_ops; @@ -360,6 +361,11 @@ static struct arm_smmu_option_prop arm_smmu_options[] = { { 0, NULL}, }; +static struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) +{ + return container_of(dom, struct arm_smmu_domain, domain); +} + static void parse_driver_options(struct arm_smmu_device *smmu) { int i = 0; @@ -645,7 +651,7 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) u32 fsr, far, fsynr, resume; unsigned long iova; struct iommu_domain *domain = dev; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_cfg *cfg = &smmu_domain->cfg; struct arm_smmu_device *smmu = smmu_domain->smmu; void __iomem *cb_base; @@ -836,7 +842,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, struct io_pgtable_ops *pgtbl_ops; struct io_pgtable_cfg pgtbl_cfg; enum io_pgtable_fmt fmt; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_cfg *cfg = &smmu_domain->cfg; mutex_lock(&smmu_domain->init_mutex); @@ -958,7 +964,7 @@ out_unlock: static void arm_smmu_destroy_domain_context(struct iommu_domain *domain) { - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; struct arm_smmu_cfg *cfg = &smmu_domain->cfg; void __iomem *cb_base; @@ -985,10 +991,12 @@ static void arm_smmu_destroy_domain_context(struct iommu_domain *domain) __arm_smmu_free_bitmap(smmu->context_map, cfg->cbndx); } -static int arm_smmu_domain_init(struct iommu_domain *domain) +static struct iommu_domain *arm_smmu_domain_alloc(unsigned type) { struct arm_smmu_domain *smmu_domain; + if (type != IOMMU_DOMAIN_UNMANAGED) + return NULL; /* * Allocate the domain and initialise some of its data structures. * We can't really do anything meaningful until we've added a @@ -996,17 +1004,17 @@ static int arm_smmu_domain_init(struct iommu_domain *domain) */ smmu_domain = kzalloc(sizeof(*smmu_domain), GFP_KERNEL); if (!smmu_domain) - return -ENOMEM; + return NULL; mutex_init(&smmu_domain->init_mutex); spin_lock_init(&smmu_domain->pgtbl_lock); - domain->priv = smmu_domain; - return 0; + + return &smmu_domain->domain; } -static void arm_smmu_domain_destroy(struct iommu_domain *domain) +static void arm_smmu_domain_free(struct iommu_domain *domain) { - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); /* * Free the domain resources. We assume that all devices have @@ -1143,7 +1151,7 @@ static void arm_smmu_domain_remove_master(struct arm_smmu_domain *smmu_domain, static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev) { int ret; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu; struct arm_smmu_master_cfg *cfg; @@ -1187,7 +1195,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev) static void arm_smmu_detach_dev(struct iommu_domain *domain, struct device *dev) { - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_master_cfg *cfg; cfg = find_smmu_master_cfg(dev); @@ -1203,7 +1211,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova, { int ret; unsigned long flags; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct io_pgtable_ops *ops= smmu_domain->pgtbl_ops; if (!ops) @@ -1220,7 +1228,7 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova, { size_t ret; unsigned long flags; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct io_pgtable_ops *ops= smmu_domain->pgtbl_ops; if (!ops) @@ -1235,7 +1243,7 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova, static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain, dma_addr_t iova) { - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; struct arm_smmu_cfg *cfg = &smmu_domain->cfg; struct io_pgtable_ops *ops= smmu_domain->pgtbl_ops; @@ -1281,7 +1289,7 @@ static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain, { phys_addr_t ret; unsigned long flags; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct io_pgtable_ops *ops= smmu_domain->pgtbl_ops; if (!ops) @@ -1389,7 +1397,7 @@ static void arm_smmu_remove_device(struct device *dev) static int arm_smmu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); switch (attr) { case DOMAIN_ATTR_NESTING: @@ -1404,7 +1412,7 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { int ret = 0; - struct arm_smmu_domain *smmu_domain = domain->priv; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); mutex_lock(&smmu_domain->init_mutex); @@ -1432,8 +1440,8 @@ out_unlock: static struct iommu_ops arm_smmu_ops = { .capable = arm_smmu_capable, - .domain_init = arm_smmu_domain_init, - .domain_destroy = arm_smmu_domain_destroy, + .domain_alloc = arm_smmu_domain_alloc, + .domain_free = arm_smmu_domain_free, .attach_dev = arm_smmu_attach_dev, .detach_dev = arm_smmu_detach_dev, .map = arm_smmu_map, |
