From: Joerg Roedel Date: Wed, 27 May 2020 11:53:12 +0000 (+0200) Subject: iommu/amd: Store dev_data as device iommu private data X-Git-Tag: v5.10.7~2330^2~3^8~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=05a0542b456e135f362ba83a17ccff73bac0b92f;p=platform%2Fkernel%2Flinux-rpi.git iommu/amd: Store dev_data as device iommu private data Do not use dev->archdata.iommu anymore and switch to using the private per-device pointer provided by the IOMMU core code. Signed-off-by: Joerg Roedel Reviewed-by: Suravee Suthikulpanit Link: https://lore.kernel.org/r/20200527115313.7426-10-joro@8bytes.org --- diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 862c8d5..7461b49 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -279,11 +279,6 @@ static struct iommu_dev_data *find_dev_data(u16 devid) return dev_data; } -static struct iommu_dev_data *get_dev_data(struct device *dev) -{ - return dev->archdata.iommu; -} - /* * Find or create an IOMMU group for a acpihid device. */ @@ -334,7 +329,7 @@ static bool pdev_pri_erratum(struct pci_dev *pdev, u32 erratum) { struct iommu_dev_data *dev_data; - dev_data = get_dev_data(&pdev->dev); + dev_data = dev_iommu_priv_get(&pdev->dev); return dev_data->errata & (1 << erratum) ? true : false; } @@ -369,7 +364,7 @@ static int iommu_init_device(struct device *dev) struct iommu_dev_data *dev_data; int devid; - if (dev->archdata.iommu) + if (dev_iommu_priv_get(dev)) return 0; devid = get_device_id(dev); @@ -396,7 +391,7 @@ static int iommu_init_device(struct device *dev) dev_data->iommu_v2 = iommu->is_iommu_v2; } - dev->archdata.iommu = dev_data; + dev_iommu_priv_set(dev, dev_data); return 0; } @@ -431,6 +426,8 @@ static void amd_iommu_uninit_device(struct device *dev) if (dev_data->domain) detach_device(dev); + dev_iommu_priv_set(dev, NULL); + /* * We keep dev_data around for unplugged devices and reuse it when the * device is re-plugged - not doing so would introduce a ton of races. @@ -493,7 +490,7 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id, pdev = pci_get_domain_bus_and_slot(0, PCI_BUS_NUM(devid), devid & 0xff); if (pdev) - dev_data = get_dev_data(&pdev->dev); + dev_data = dev_iommu_priv_get(&pdev->dev); if (dev_data && __ratelimit(&dev_data->rs)) { pci_err(pdev, "Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%llx flags=0x%04x]\n", @@ -2033,7 +2030,7 @@ static int attach_device(struct device *dev, spin_lock_irqsave(&domain->lock, flags); - dev_data = get_dev_data(dev); + dev_data = dev_iommu_priv_get(dev); spin_lock(&dev_data->lock); @@ -2097,7 +2094,7 @@ static void detach_device(struct device *dev) struct iommu_dev_data *dev_data; unsigned long flags; - dev_data = get_dev_data(dev); + dev_data = dev_iommu_priv_get(dev); domain = dev_data->domain; spin_lock_irqsave(&domain->lock, flags); @@ -2146,7 +2143,7 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev) iommu = amd_iommu_rlookup_table[devid]; - if (get_dev_data(dev)) + if (dev_iommu_priv_get(dev)) return &iommu->iommu; ret = iommu_init_device(dev); @@ -2435,7 +2432,7 @@ static void amd_iommu_domain_free(struct iommu_domain *dom) static void amd_iommu_detach_device(struct iommu_domain *dom, struct device *dev) { - struct iommu_dev_data *dev_data = dev->archdata.iommu; + struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev); struct amd_iommu *iommu; int devid; @@ -2473,7 +2470,7 @@ static int amd_iommu_attach_device(struct iommu_domain *dom, if (!check_device(dev)) return -EINVAL; - dev_data = dev->archdata.iommu; + dev_data = dev_iommu_priv_get(dev); dev_data->defer_attach = false; iommu = amd_iommu_rlookup_table[dev_data->devid]; @@ -2632,7 +2629,7 @@ static void amd_iommu_get_resv_regions(struct device *dev, bool amd_iommu_is_attach_deferred(struct iommu_domain *domain, struct device *dev) { - struct iommu_dev_data *dev_data = dev->archdata.iommu; + struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev); return dev_data->defer_attach; } @@ -2659,7 +2656,7 @@ static int amd_iommu_def_domain_type(struct device *dev) { struct iommu_dev_data *dev_data; - dev_data = get_dev_data(dev); + dev_data = dev_iommu_priv_get(dev); if (!dev_data) return 0; @@ -2992,7 +2989,7 @@ int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid, struct amd_iommu *iommu; struct iommu_cmd cmd; - dev_data = get_dev_data(&pdev->dev); + dev_data = dev_iommu_priv_get(&pdev->dev); iommu = amd_iommu_rlookup_table[dev_data->devid]; build_complete_ppr(&cmd, dev_data->devid, pasid, status, @@ -3005,16 +3002,19 @@ EXPORT_SYMBOL(amd_iommu_complete_ppr); struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev) { struct protection_domain *pdomain; - struct iommu_domain *io_domain; + struct iommu_dev_data *dev_data; struct device *dev = &pdev->dev; + struct iommu_domain *io_domain; if (!check_device(dev)) return NULL; - pdomain = get_dev_data(dev)->domain; + dev_data = dev_iommu_priv_get(&pdev->dev); + pdomain = dev_data->domain; io_domain = iommu_get_domain_for_dev(dev); - if (pdomain == NULL && get_dev_data(dev)->defer_attach) { - get_dev_data(dev)->defer_attach = false; + + if (pdomain == NULL && dev_data->defer_attach) { + dev_data->defer_attach = false; pdomain = to_pdomain(io_domain); attach_device(dev, pdomain); } @@ -3040,7 +3040,7 @@ void amd_iommu_enable_device_erratum(struct pci_dev *pdev, u32 erratum) if (!amd_iommu_v2_supported()) return; - dev_data = get_dev_data(&pdev->dev); + dev_data = dev_iommu_priv_get(&pdev->dev); dev_data->errata |= (1 << erratum); } EXPORT_SYMBOL(amd_iommu_enable_device_erratum);