summaryrefslogtreecommitdiff
path: root/include/linux/iommu.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/iommu.h')
-rw-r--r--include/linux/iommu.h67
1 files changed, 63 insertions, 4 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 2cb54adc4a33..a7f2ac689d29 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -167,6 +167,10 @@ struct iommu_resv_region {
* @map: map a physically contiguous memory region to an iommu domain
* @unmap: unmap a physically contiguous memory region from an iommu domain
* @map_sg: map a scatter-gather list of physically contiguous memory chunks
+ * @flush_tlb_all: Synchronously flush all hardware TLBs for this domain
+ * @tlb_range_add: Add a given iova range to the flush queue for this domain
+ * @tlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
+ * queue
* to an iommu domain
* @iova_to_phys: translate iova to physical address
* @add_device: add device to iommu grouping
@@ -199,6 +203,10 @@ struct iommu_ops {
size_t size);
size_t (*map_sg)(struct iommu_domain *domain, unsigned long iova,
struct scatterlist *sg, unsigned int nents, int prot);
+ void (*flush_iotlb_all)(struct iommu_domain *domain);
+ void (*iotlb_range_add)(struct iommu_domain *domain,
+ unsigned long iova, size_t size);
+ void (*iotlb_sync)(struct iommu_domain *domain);
phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
int (*add_device)(struct device *dev);
void (*remove_device)(struct device *dev);
@@ -225,6 +233,7 @@ struct iommu_ops {
u32 (*domain_get_windows)(struct iommu_domain *domain);
int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
+ bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);
unsigned long pgsize_bitmap;
};
@@ -240,7 +249,7 @@ struct iommu_device {
struct list_head list;
const struct iommu_ops *ops;
struct fwnode_handle *fwnode;
- struct device dev;
+ struct device *dev;
};
int iommu_device_register(struct iommu_device *iommu);
@@ -265,6 +274,11 @@ static inline void iommu_device_set_fwnode(struct iommu_device *iommu,
iommu->fwnode = fwnode;
}
+static inline struct iommu_device *dev_to_iommu_device(struct device *dev)
+{
+ return (struct iommu_device *)dev_get_drvdata(dev);
+}
+
#define IOMMU_GROUP_NOTIFY_ADD_DEVICE 1 /* Device added */
#define IOMMU_GROUP_NOTIFY_DEL_DEVICE 2 /* Pre Device removed */
#define IOMMU_GROUP_NOTIFY_BIND_DRIVER 3 /* Pre Driver bind */
@@ -286,7 +300,9 @@ extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev);
extern int iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot);
extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova,
- size_t size);
+ size_t size);
+extern size_t iommu_unmap_fast(struct iommu_domain *domain,
+ unsigned long iova, size_t size);
extern size_t default_iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
struct scatterlist *sg,unsigned int nents,
int prot);
@@ -343,6 +359,25 @@ extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr)
extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
unsigned long iova, int flags);
+static inline void iommu_flush_tlb_all(struct iommu_domain *domain)
+{
+ if (domain->ops->flush_iotlb_all)
+ domain->ops->flush_iotlb_all(domain);
+}
+
+static inline void iommu_tlb_range_add(struct iommu_domain *domain,
+ unsigned long iova, size_t size)
+{
+ if (domain->ops->iotlb_range_add)
+ domain->ops->iotlb_range_add(domain, iova, size);
+}
+
+static inline void iommu_tlb_sync(struct iommu_domain *domain)
+{
+ if (domain->ops->iotlb_sync)
+ domain->ops->iotlb_sync(domain);
+}
+
static inline size_t iommu_map_sg(struct iommu_domain *domain,
unsigned long iova, struct scatterlist *sg,
unsigned int nents, int prot)
@@ -425,13 +460,19 @@ static inline struct iommu_domain *iommu_get_domain_for_dev(struct device *dev)
}
static inline int iommu_map(struct iommu_domain *domain, unsigned long iova,
- phys_addr_t paddr, int gfp_order, int prot)
+ phys_addr_t paddr, size_t size, int prot)
{
return -ENODEV;
}
static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova,
- int gfp_order)
+ size_t size)
+{
+ return -ENODEV;
+}
+
+static inline int iommu_unmap_fast(struct iommu_domain *domain, unsigned long iova,
+ int gfp_order)
{
return -ENODEV;
}
@@ -443,6 +484,19 @@ static inline size_t iommu_map_sg(struct iommu_domain *domain,
return -ENODEV;
}
+static inline void iommu_flush_tlb_all(struct iommu_domain *domain)
+{
+}
+
+static inline void iommu_tlb_range_add(struct iommu_domain *domain,
+ unsigned long iova, size_t size)
+{
+}
+
+static inline void iommu_tlb_sync(struct iommu_domain *domain)
+{
+}
+
static inline int iommu_domain_window_enable(struct iommu_domain *domain,
u32 wnd_nr, phys_addr_t paddr,
u64 size, int prot)
@@ -589,6 +643,11 @@ static inline void iommu_device_set_fwnode(struct iommu_device *iommu,
{
}
+static inline struct iommu_device *dev_to_iommu_device(struct device *dev)
+{
+ return NULL;
+}
+
static inline void iommu_device_unregister(struct iommu_device *iommu)
{
}