diff options
| -rw-r--r-- | drivers/pci/dmar.c | 4 | ||||
| -rw-r--r-- | drivers/pci/intel-iommu.c | 116 | ||||
| -rw-r--r-- | drivers/pci/intr_remapping.c | 2 | ||||
| -rw-r--r-- | drivers/pci/intr_remapping.h | 2 | ||||
| -rw-r--r-- | drivers/pci/iova.c | 2 | ||||
| -rw-r--r-- | include/linux/dma_remapping.h (renamed from drivers/pci/dma_remapping.h) | 0 | ||||
| -rw-r--r-- | include/linux/intel-iommu.h (renamed from drivers/pci/intel-iommu.h) | 24 | ||||
| -rw-r--r-- | include/linux/iova.h (renamed from drivers/pci/iova.h) | 0 |
8 files changed, 139 insertions, 11 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index bd2c01674f5e..e842e756308a 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -28,9 +28,9 @@ #include <linux/pci.h> #include <linux/dmar.h> +#include <linux/iova.h> +#include <linux/intel-iommu.h> #include <linux/timer.h> -#include "iova.h" -#include "intel-iommu.h" #undef PREFIX #define PREFIX "DMAR:" diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 389fdd6f4a9f..fc5f2dbf5323 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -33,8 +33,8 @@ #include <linux/dma-mapping.h> #include <linux/mempool.h> #include <linux/timer.h> -#include "iova.h" -#include "intel-iommu.h" +#include <linux/iova.h> +#include <linux/intel-iommu.h> #include <asm/proto.h> /* force_iommu in this header in x86-64*/ #include <asm/cacheflush.h> #include <asm/iommu.h> @@ -156,7 +156,7 @@ static inline void *alloc_domain_mem(void) return iommu_kmem_cache_alloc(iommu_domain_cache); } -static inline void free_domain_mem(void *vaddr) +static void free_domain_mem(void *vaddr) { kmem_cache_free(iommu_domain_cache, vaddr); } @@ -1341,7 +1341,7 @@ static void domain_remove_dev_info(struct dmar_domain *domain) * find_domain * Note: we use struct pci_dev->dev.archdata.iommu stores the info */ -struct dmar_domain * +static struct dmar_domain * find_domain(struct pci_dev *pdev) { struct device_domain_info *info; @@ -2318,3 +2318,111 @@ int __init intel_iommu_init(void) return 0; } +void intel_iommu_domain_exit(struct dmar_domain *domain) +{ + u64 end; + + /* Domain 0 is reserved, so dont process it */ + if (!domain) + return; + + end = DOMAIN_MAX_ADDR(domain->gaw); + end = end & (~PAGE_MASK_4K); + + /* clear ptes */ + dma_pte_clear_range(domain, 0, end); + + /* free page tables */ + dma_pte_free_pagetable(domain, 0, end); + + iommu_free_domain(domain); + free_domain_mem(domain); +} +EXPORT_SYMBOL_GPL(intel_iommu_domain_exit); + +struct dmar_domain *intel_iommu_domain_alloc(struct pci_dev *pdev) +{ + struct dmar_drhd_unit *drhd; + struct dmar_domain *domain; + struct intel_iommu *iommu; + + drhd = dmar_find_matched_drhd_unit(pdev); + if (!drhd) { + printk(KERN_ERR "intel_iommu_domain_alloc: drhd == NULL\n"); + return NULL; + } + + iommu = drhd->iommu; + if (!iommu) { + printk(KERN_ERR + "intel_iommu_domain_alloc: iommu == NULL\n"); + return NULL; + } + domain = iommu_alloc_domain(iommu); + if (!domain) { + printk(KERN_ERR + "intel_iommu_domain_alloc: domain == NULL\n"); + return NULL; + } + if (domain_init(domain, DEFAULT_DOMAIN_ADDRESS_WIDTH)) { + printk(KERN_ERR + "intel_iommu_domain_alloc: domain_init() failed\n"); + intel_iommu_domain_exit(domain); + return NULL; + } + return domain; +} +EXPORT_SYMBOL_GPL(intel_iommu_domain_alloc); + +int intel_iommu_context_mapping( + struct dmar_domain *domain, struct pci_dev *pdev) +{ + int rc; + rc = domain_context_mapping(domain, pdev); + return rc; +} +EXPORT_SYMBOL_GPL(intel_iommu_context_mapping); + +int intel_iommu_page_mapping( + struct dmar_domain *domain, dma_addr_t iova, + u64 hpa, size_t size, int prot) +{ + int rc; + rc = domain_page_mapping(domain, iova, hpa, size, prot); + return rc; +} +EXPORT_SYMBOL_GPL(intel_iommu_page_mapping); + +void intel_iommu_detach_dev(struct dmar_domain *domain, u8 bus, u8 devfn) +{ + detach_domain_for_dev(domain, bus, devfn); +} +EXPORT_SYMBOL_GPL(intel_iommu_detach_dev); + +struct dmar_domain * +intel_iommu_find_domain(struct pci_dev *pdev) +{ + return find_domain(pdev); +} +EXPORT_SYMBOL_GPL(intel_iommu_find_domain); + +int intel_iommu_found(void) +{ + return g_num_of_iommus; +} +EXPORT_SYMBOL_GPL(intel_iommu_found); + +u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova) +{ + struct dma_pte *pte; + u64 pfn; + + pfn = 0; + pte = addr_to_dma_pte(domain, iova); + + if (pte) + pfn = dma_pte_addr(*pte); + + return pfn >> PAGE_SHIFT_4K; +} +EXPORT_SYMBOL_GPL(intel_iommu_iova_to_pfn); diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c index bb642cc5e18c..738d4c89581c 100644 --- a/drivers/pci/intr_remapping.c +++ b/drivers/pci/intr_remapping.c @@ -4,7 +4,7 @@ #include <linux/pci.h> #include <linux/irq.h> #include <asm/io_apic.h> -#include "intel-iommu.h" +#include <linux/intel-iommu.h> #include "intr_remapping.h" static struct ioapic_scope ir_ioapic[MAX_IO_APICS]; diff --git a/drivers/pci/intr_remapping.h b/drivers/pci/intr_remapping.h index 05f2635bbe4e..ca48f0df8ac9 100644 --- a/drivers/pci/intr_remapping.h +++ b/drivers/pci/intr_remapping.h @@ -1,4 +1,4 @@ -#include "intel-iommu.h" +#include <linux/intel-iommu.h> struct ioapic_scope { struct intel_iommu *iommu; diff --git a/drivers/pci/iova.c b/drivers/pci/iova.c index 3ef4ac064315..2287116e9822 100644 --- a/drivers/pci/iova.c +++ b/drivers/pci/iova.c @@ -7,7 +7,7 @@ * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> */ -#include "iova.h" +#include <linux/iova.h> void init_iova_domain(struct iova_domain *iovad, unsigned long pfn_32bit) diff --git a/drivers/pci/dma_remapping.h b/include/linux/dma_remapping.h index bff5c65f81dc..bff5c65f81dc 100644 --- a/drivers/pci/dma_remapping.h +++ b/include/linux/dma_remapping.h diff --git a/drivers/pci/intel-iommu.h b/include/linux/intel-iommu.h index 2142c01e0143..2e117f30a76c 100644 --- a/drivers/pci/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -25,10 +25,10 @@ #include <linux/types.h> #include <linux/msi.h> #include <linux/sysdev.h> -#include "iova.h" +#include <linux/iova.h> #include <linux/io.h> +#include <linux/dma_remapping.h> #include <asm/cacheflush.h> -#include "dma_remapping.h" /* * Intel IOMMU register specification per version 1.0 public spec. @@ -304,4 +304,24 @@ extern int dmar_enable_qi(struct intel_iommu *iommu); extern void qi_global_iec(struct intel_iommu *iommu); extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu); + +void intel_iommu_domain_exit(struct dmar_domain *domain); +struct dmar_domain *intel_iommu_domain_alloc(struct pci_dev *pdev); +int intel_iommu_context_mapping(struct dmar_domain *domain, + struct pci_dev *pdev); +int intel_iommu_page_mapping(struct dmar_domain *domain, dma_addr_t iova, + u64 hpa, size_t size, int prot); +void intel_iommu_detach_dev(struct dmar_domain *domain, u8 bus, u8 devfn); +struct dmar_domain *intel_iommu_find_domain(struct pci_dev *pdev); +u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova); + +#ifdef CONFIG_DMAR +int intel_iommu_found(void); +#else /* CONFIG_DMAR */ +static inline int intel_iommu_found(void) +{ + return 0; +} +#endif /* CONFIG_DMAR */ + #endif diff --git a/drivers/pci/iova.h b/include/linux/iova.h index 228f6c94b69c..228f6c94b69c 100644 --- a/drivers/pci/iova.h +++ b/include/linux/iova.h |