diff options
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index d759e7234e98..04e82f175601 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -356,6 +356,7 @@ static int intel_iommu_strict; static int intel_iommu_superpage = 1; static int iommu_identity_mapping; static int intel_no_bounce; +static int iommu_skip_te_disable; #define IDENTMAP_GFX 2 #define IDENTMAP_AZALIA 4 @@ -1629,6 +1630,10 @@ static void iommu_disable_translation(struct intel_iommu *iommu) u32 sts; unsigned long flag; + if (iommu_skip_te_disable && iommu->drhd->gfx_dedicated && + (cap_read_drain(iommu->cap) || cap_write_drain(iommu->cap))) + return; + raw_spin_lock_irqsave(&iommu->register_lock, flag); iommu->gcmd &= ~DMA_GCMD_TE; writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG); @@ -2560,7 +2565,7 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu, } if (info->ats_supported && ecap_prs(iommu->ecap) && - pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PRI)) + pci_pri_supported(pdev)) info->pri_supported = 1; } } @@ -4039,6 +4044,7 @@ static void __init init_no_remapping_devices(void) /* This IOMMU has *only* gfx devices. Either bypass it or set the gfx_mapped flag, as appropriate */ + drhd->gfx_dedicated = 1; if (!dmar_map_gfx) { drhd->ignored = 1; for_each_active_dev_scope(drhd->devices, @@ -5446,13 +5452,12 @@ intel_iommu_sva_invalidate(struct iommu_domain *domain, struct device *dev, switch (BIT(cache_type)) { case IOMMU_CACHE_INV_TYPE_IOTLB: + /* HW will ignore LSB bits based on address mask */ if (inv_info->granularity == IOMMU_INV_GRANU_ADDR && size && (inv_info->addr_info.addr & ((BIT(VTD_PAGE_SHIFT + size)) - 1))) { - pr_err_ratelimited("Address out of range, 0x%llx, size order %llu\n", + pr_err_ratelimited("User address not aligned, 0x%llx, size order %llu\n", inv_info->addr_info.addr, size); - ret = -ERANGE; - goto out_unlock; } /* @@ -6182,6 +6187,27 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0044, quirk_calpella_no_shadow_g DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0062, quirk_calpella_no_shadow_gtt); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x006a, quirk_calpella_no_shadow_gtt); +static void quirk_igfx_skip_te_disable(struct pci_dev *dev) +{ + unsigned short ver; + + if (!IS_GFX_DEVICE(dev)) + return; + + ver = (dev->device >> 8) & 0xff; + if (ver != 0x45 && ver != 0x46 && ver != 0x4c && + ver != 0x4e && ver != 0x8a && ver != 0x98 && + ver != 0x9a) + return; + + if (risky_device(dev)) + return; + + pci_info(dev, "Skip IOMMU disabling for graphics\n"); + iommu_skip_te_disable = 1; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_igfx_skip_te_disable); + /* On Tylersburg chipsets, some BIOSes have been known to enable the ISOCH DMAR unit for the Azalia sound device, but not give it any TLB entries, which causes it to deadlock. Check for that. We do |