diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 84 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 7 |
2 files changed, 48 insertions, 43 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 48882c126245..e8c412dcac21 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -126,6 +126,11 @@ static int __init alloc_passthrough_domain(void); * ****************************************************************************/ +static struct protection_domain *to_pdomain(struct iommu_domain *dom) +{ + return container_of(dom, struct protection_domain, domain); +} + static struct iommu_dev_data *alloc_dev_data(u16 devid) { struct iommu_dev_data *dev_data; @@ -3236,42 +3241,45 @@ static int __init alloc_passthrough_domain(void) return 0; } -static int amd_iommu_domain_init(struct iommu_domain *dom) + +static struct iommu_domain *amd_iommu_domain_alloc(unsigned type) { - struct protection_domain *domain; + struct protection_domain *pdomain; - domain = protection_domain_alloc(); - if (!domain) - goto out_free; + /* We only support unmanaged domains for now */ + if (type != IOMMU_DOMAIN_UNMANAGED) + return NULL; - domain->mode = PAGE_MODE_3_LEVEL; - domain->pt_root = (void *)get_zeroed_page(GFP_KERNEL); - if (!domain->pt_root) + pdomain = protection_domain_alloc(); + if (!pdomain) goto out_free; - domain->iommu_domain = dom; - - dom->priv = domain; + pdomain->mode = PAGE_MODE_3_LEVEL; + pdomain->pt_root = (void *)get_zeroed_page(GFP_KERNEL); + if (!pdomain->pt_root) + goto out_free; - dom->geometry.aperture_start = 0; - dom->geometry.aperture_end = ~0ULL; - dom->geometry.force_aperture = true; + pdomain->domain.geometry.aperture_start = 0; + pdomain->domain.geometry.aperture_end = ~0ULL; + pdomain->domain.geometry.force_aperture = true; - return 0; + return &pdomain->domain; out_free: - protection_domain_free(domain); + protection_domain_free(pdomain); - return -ENOMEM; + return NULL; } -static void amd_iommu_domain_destroy(struct iommu_domain *dom) +static void amd_iommu_domain_free(struct iommu_domain *dom) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain; - if (!domain) + if (!dom) return; + domain = to_pdomain(dom); + if (domain->dev_cnt > 0) cleanup_domain(domain); @@ -3284,8 +3292,6 @@ static void amd_iommu_domain_destroy(struct iommu_domain *dom) free_gcr3_table(domain); protection_domain_free(domain); - - dom->priv = NULL; } static void amd_iommu_detach_device(struct iommu_domain *dom, @@ -3313,7 +3319,7 @@ static void amd_iommu_detach_device(struct iommu_domain *dom, static int amd_iommu_attach_device(struct iommu_domain *dom, struct device *dev) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); struct iommu_dev_data *dev_data; struct amd_iommu *iommu; int ret; @@ -3340,7 +3346,7 @@ static int amd_iommu_attach_device(struct iommu_domain *dom, static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, phys_addr_t paddr, size_t page_size, int iommu_prot) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); int prot = 0; int ret; @@ -3362,7 +3368,7 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, size_t page_size) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); size_t unmap_size; if (domain->mode == PAGE_MODE_NONE) @@ -3380,7 +3386,7 @@ static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, dma_addr_t iova) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long offset_mask; phys_addr_t paddr; u64 *pte, __pte; @@ -3420,8 +3426,8 @@ static bool amd_iommu_capable(enum iommu_cap cap) static const struct iommu_ops amd_iommu_ops = { .capable = amd_iommu_capable, - .domain_init = amd_iommu_domain_init, - .domain_destroy = amd_iommu_domain_destroy, + .domain_alloc = amd_iommu_domain_alloc, + .domain_free = amd_iommu_domain_free, .attach_dev = amd_iommu_attach_device, .detach_dev = amd_iommu_detach_device, .map = amd_iommu_map, @@ -3483,7 +3489,7 @@ EXPORT_SYMBOL(amd_iommu_unregister_ppr_notifier); void amd_iommu_domain_direct_map(struct iommu_domain *dom) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long flags; spin_lock_irqsave(&domain->lock, flags); @@ -3504,7 +3510,7 @@ EXPORT_SYMBOL(amd_iommu_domain_direct_map); int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long flags; int levels, ret; @@ -3616,7 +3622,7 @@ static int __amd_iommu_flush_page(struct protection_domain *domain, int pasid, int amd_iommu_flush_page(struct iommu_domain *dom, int pasid, u64 address) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long flags; int ret; @@ -3638,7 +3644,7 @@ static int __amd_iommu_flush_tlb(struct protection_domain *domain, int pasid) int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long flags; int ret; @@ -3718,7 +3724,7 @@ static int __clear_gcr3(struct protection_domain *domain, int pasid) int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid, unsigned long cr3) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long flags; int ret; @@ -3732,7 +3738,7 @@ EXPORT_SYMBOL(amd_iommu_domain_set_gcr3); int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid) { - struct protection_domain *domain = dom->priv; + struct protection_domain *domain = to_pdomain(dom); unsigned long flags; int ret; @@ -3765,17 +3771,17 @@ EXPORT_SYMBOL(amd_iommu_complete_ppr); struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev) { - struct protection_domain *domain; + struct protection_domain *pdomain; - domain = get_domain(&pdev->dev); - if (IS_ERR(domain)) + pdomain = get_domain(&pdev->dev); + if (IS_ERR(pdomain)) return NULL; /* Only return IOMMUv2 domains */ - if (!(domain->flags & PD_IOMMUV2_MASK)) + if (!(pdomain->flags & PD_IOMMUV2_MASK)) return NULL; - return domain->iommu_domain; + return &pdomain->domain; } EXPORT_SYMBOL(amd_iommu_get_v2_domain); diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index c4fffb710c58..2b1276b2ec80 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -400,6 +400,8 @@ struct iommu_domain; struct protection_domain { struct list_head list; /* for list of all protection domains */ struct list_head dev_list; /* List of all devices in this domain */ + struct iommu_domain domain; /* generic domain handle used by + iommu core code */ spinlock_t lock; /* mostly used to lock the page table*/ struct mutex api_lock; /* protect page tables in the iommu-api path */ u16 id; /* the domain id written to the device table */ @@ -411,10 +413,7 @@ struct protection_domain { bool updated; /* complete domain flush required */ unsigned dev_cnt; /* devices assigned to this domain */ unsigned dev_iommu[MAX_IOMMUS]; /* per-IOMMU reference count */ - void *priv; /* private data */ - struct iommu_domain *iommu_domain; /* Pointer to generic - domain structure */ - + void *priv; /* private data */ }; /* |