diff options
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
-rw-r--r-- | drivers/iommu/amd_iommu.c | 47 |
1 files changed, 26 insertions, 21 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 87ba23a75b38..6b0760dafb3e 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -18,6 +18,7 @@ */ #define pr_fmt(fmt) "AMD-Vi: " fmt +#define dev_fmt(fmt) pr_fmt(fmt) #include <linux/ratelimit.h> #include <linux/pci.h> @@ -279,10 +280,10 @@ static u16 get_alias(struct device *dev) return pci_alias; } - pr_info("Using IVRS reported alias %02x:%02x.%d " - "for device %s[%04x:%04x], kernel reported alias " + pci_info(pdev, "Using IVRS reported alias %02x:%02x.%d " + "for device [%04x:%04x], kernel reported alias " "%02x:%02x.%d\n", PCI_BUS_NUM(ivrs_alias), PCI_SLOT(ivrs_alias), - PCI_FUNC(ivrs_alias), dev_name(dev), pdev->vendor, pdev->device, + PCI_FUNC(ivrs_alias), pdev->vendor, pdev->device, PCI_BUS_NUM(pci_alias), PCI_SLOT(pci_alias), PCI_FUNC(pci_alias)); @@ -293,9 +294,8 @@ static u16 get_alias(struct device *dev) if (pci_alias == devid && PCI_BUS_NUM(ivrs_alias) == pdev->bus->number) { pci_add_dma_alias(pdev, ivrs_alias & 0xff); - pr_info("Added PCI DMA alias %02x.%d for %s\n", - PCI_SLOT(ivrs_alias), PCI_FUNC(ivrs_alias), - dev_name(dev)); + pci_info(pdev, "Added PCI DMA alias %02x.%d\n", + PCI_SLOT(ivrs_alias), PCI_FUNC(ivrs_alias)); } return ivrs_alias; @@ -545,7 +545,7 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id, dev_data = get_dev_data(&pdev->dev); if (dev_data && __ratelimit(&dev_data->rs)) { - dev_err(&pdev->dev, "Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%llx flags=0x%04x]\n", + pci_err(pdev, "Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%llx flags=0x%04x]\n", domain_id, address, flags); } else if (printk_ratelimit()) { pr_err("Event logged [IO_PAGE_FAULT device=%02x:%02x.%x domain=0x%04x address=0x%llx flags=0x%04x]\n", @@ -1991,16 +1991,13 @@ static void do_attach(struct iommu_dev_data *dev_data, static void do_detach(struct iommu_dev_data *dev_data) { + struct protection_domain *domain = dev_data->domain; struct amd_iommu *iommu; u16 alias; iommu = amd_iommu_rlookup_table[dev_data->devid]; alias = dev_data->alias; - /* decrease reference counters */ - dev_data->domain->dev_iommu[iommu->index] -= 1; - dev_data->domain->dev_cnt -= 1; - /* Update data structures */ dev_data->domain = NULL; list_del(&dev_data->list); @@ -2010,6 +2007,16 @@ static void do_detach(struct iommu_dev_data *dev_data) /* Flush the DTE entry */ device_flush_dte(dev_data); + + /* Flush IOTLB */ + domain_flush_tlb_pde(domain); + + /* Wait for the flushes to finish */ + domain_flush_complete(domain); + + /* decrease reference counters - needs to happen after the flushes */ + domain->dev_iommu[iommu->index] -= 1; + domain->dev_cnt -= 1; } /* @@ -2251,8 +2258,7 @@ static int amd_iommu_add_device(struct device *dev) ret = iommu_init_device(dev); if (ret) { if (ret != -ENOTSUPP) - pr_err("Failed to initialize device %s - trying to proceed anyway\n", - dev_name(dev)); + dev_err(dev, "Failed to initialize - trying to proceed anyway\n"); iommu_ignore_device(dev); dev->dma_ops = NULL; @@ -2562,6 +2568,7 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, struct scatterlist *s; unsigned long address; u64 dma_mask; + int ret; domain = get_domain(dev); if (IS_ERR(domain)) @@ -2584,7 +2591,6 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, for (j = 0; j < pages; ++j) { unsigned long bus_addr, phys_addr; - int ret; bus_addr = address + s->dma_address + (j << PAGE_SHIFT); phys_addr = (sg_phys(s) & PAGE_MASK) + (j << PAGE_SHIFT); @@ -2605,8 +2611,8 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, return nelems; out_unmap: - pr_err("%s: IOMMU mapping error in map_sg (io-pages: %d)\n", - dev_name(dev), npages); + dev_err(dev, "IOMMU mapping error in map_sg (io-pages: %d reason: %d)\n", + npages, ret); for_each_sg(sglist, s, nelems, i) { int j, pages = iommu_num_pages(sg_phys(s), s->length, PAGE_SIZE); @@ -2617,13 +2623,13 @@ out_unmap: bus_addr = address + s->dma_address + (j << PAGE_SHIFT); iommu_unmap_page(domain, bus_addr, PAGE_SIZE); - if (--mapped_pages) + if (--mapped_pages == 0) goto out_free_iova; } } out_free_iova: - free_iova_fast(&dma_dom->iovad, address, npages); + free_iova_fast(&dma_dom->iovad, address >> PAGE_SHIFT, npages); out_err: return 0; @@ -2800,7 +2806,7 @@ static int init_reserved_iova_ranges(void) IOVA_PFN(r->start), IOVA_PFN(r->end)); if (!val) { - pr_err("Reserve pci-resource range failed\n"); + pci_err(pdev, "Reserve pci-resource range %pR failed\n", r); return -ENOMEM; } } @@ -3170,8 +3176,7 @@ static void amd_iommu_get_resv_regions(struct device *dev, length, prot, IOMMU_RESV_DIRECT); if (!region) { - pr_err("Out of memory allocating dm-regions for %s\n", - dev_name(dev)); + dev_err(dev, "Out of memory allocating dm-regions\n"); return; } list_add_tail(®ion->list, head); |