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Merge tag 'iommu-updates-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

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Pull IOMMU updates from Joerg Roedel:
 "Nothing big this time. In particular:

   - Debugging code for Tegra-GART

   - Improvement in Intel VT-d fault printing to prevent soft-lockups
     when on fault storms

   - Improvements in AMD IOMMU event reporting

   - NUMA aware allocation in io-pgtable code for ARM

   - Various other small fixes and cleanups all over the place"

* tag 'iommu-updates-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/io-pgtable-arm: Make allocations NUMA-aware
  iommu/amd: Prevent possible null pointer dereference and infinite loop
  iommu/amd: Fix grammar of comments
  iommu: Clean up the comments for iommu_group_alloc
  iommu/vt-d: Remove unnecessary parentheses
  iommu/vt-d: Clean up pasid quirk for pre-production devices
  iommu/vt-d: Clean up unused variable in find_or_alloc_domain
  iommu/vt-d: Fix iotlb psi missing for mappings
  iommu/vt-d: Introduce __mapping_notify_one()
  iommu: Remove extra NULL check when call strtobool()
  iommu/amd: Update logging information for new event type
  iommu/amd: Update the PASID information printed to the system log
  iommu/tegra: gart: Fix gart_iommu_unmap()
  iommu/tegra: gart: Add debugging facility
  iommu/io-pgtable-arm: Use for_each_set_bit to simplify code
  iommu/qcom: Simplify getting .drvdata
  iommu: Remove depends on HAS_DMA in case of platform dependency
  iommu/vt-d: Ratelimit each dmar fault printing
This commit is contained in:
Linus Torvalds
2018-06-08 10:44:33 -07:00
parent f4e70c2e5f 1f56835711
commit 18f1837632
12 changed files with 122 additions and 116 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
drivers/iommu/amd_iommu.c
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@@ -547,7 +547,7 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
{
struct device *dev = iommu->iommu.dev;
int type, devid, domid, flags;
int type, devid, pasid, flags, tag;
volatile u32 *event = __evt;
int count = 0;
u64 address;
@@ -555,7 +555,7 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
retry:
type = (event[1] >> EVENT_TYPE_SHIFT) & EVENT_TYPE_MASK;
devid = (event[0] >> EVENT_DEVID_SHIFT) & EVENT_DEVID_MASK;
domid = (event[1] >> EVENT_DOMID_SHIFT) & EVENT_DOMID_MASK;
pasid = PPR_PASID(*(u64 *)&event[0]);
flags = (event[1] >> EVENT_FLAGS_SHIFT) & EVENT_FLAGS_MASK;
address = (u64)(((u64)event[3]) << 32) | event[2];
@@ -570,7 +570,7 @@ retry:
}
if (type == EVENT_TYPE_IO_FAULT) {
amd_iommu_report_page_fault(devid, domid, address, flags);
amd_iommu_report_page_fault(devid, pasid, address, flags);
return;
} else {
dev_err(dev, "AMD-Vi: Event logged [");
@@ -578,10 +578,9 @@ retry:
switch (type) {
case EVENT_TYPE_ILL_DEV:
dev_err(dev, "ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x "
"address=0x%016llx flags=0x%04x]\n",
dev_err(dev, "ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address, flags);
pasid, address, flags);
dump_dte_entry(devid);
break;
case EVENT_TYPE_DEV_TAB_ERR:
@@ -591,34 +590,38 @@ retry:
address, flags);
break;
case EVENT_TYPE_PAGE_TAB_ERR:
dev_err(dev, "PAGE_TAB_HARDWARE_ERROR device=%02x:%02x.%x "
"domain=0x%04x address=0x%016llx flags=0x%04x]\n",
dev_err(dev, "PAGE_TAB_HARDWARE_ERROR device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
domid, address, flags);
pasid, address, flags);
break;
case EVENT_TYPE_ILL_CMD:
dev_err(dev, "ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address);
dump_command(address);
break;
case EVENT_TYPE_CMD_HARD_ERR:
dev_err(dev, "COMMAND_HARDWARE_ERROR address=0x%016llx "
"flags=0x%04x]\n", address, flags);
dev_err(dev, "COMMAND_HARDWARE_ERROR address=0x%016llx flags=0x%04x]\n",
address, flags);
break;
case EVENT_TYPE_IOTLB_INV_TO:
dev_err(dev, "IOTLB_INV_TIMEOUT device=%02x:%02x.%x "
"address=0x%016llx]\n",
dev_err(dev, "IOTLB_INV_TIMEOUT device=%02x:%02x.%x address=0x%016llx]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address);
break;
case EVENT_TYPE_INV_DEV_REQ:
dev_err(dev, "INVALID_DEVICE_REQUEST device=%02x:%02x.%x "
"address=0x%016llx flags=0x%04x]\n",
dev_err(dev, "INVALID_DEVICE_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address, flags);
pasid, address, flags);
break;
case EVENT_TYPE_INV_PPR_REQ:
pasid = ((event[0] >> 16) & 0xFFFF)
| ((event[1] << 6) & 0xF0000);
tag = event[1] & 0x03FF;
dev_err(dev, "INVALID_PPR_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
default:
dev_err(dev, KERN_ERR "UNKNOWN event[0]=0x%08x event[1]=0x%08x "
"event[2]=0x%08x event[3]=0x%08x\n",
dev_err(dev, "UNKNOWN event[0]=0x%08x event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
event[0], event[1], event[2], event[3]);
}
@@ -1914,15 +1917,6 @@ static void do_detach(struct iommu_dev_data *dev_data)
struct amd_iommu *iommu;
u16 alias;
/*
* First check if the device is still attached. It might already
* be detached from its domain because the generic
* iommu_detach_group code detached it and we try again here in
* our alias handling.
*/
if (!dev_data->domain)
return;
iommu = amd_iommu_rlookup_table[dev_data->devid];
alias = dev_data->alias;
@@ -1942,8 +1936,8 @@ static void do_detach(struct iommu_dev_data *dev_data)
}
/*
* If a device is not yet associated with a domain, this function does
* assigns it visible for the hardware
* If a device is not yet associated with a domain, this function makes the
* device visible in the domain
*/
static int __attach_device(struct iommu_dev_data *dev_data,
struct protection_domain *domain)
@@ -2064,8 +2058,8 @@ static bool pci_pri_tlp_required(struct pci_dev *pdev)
}
/*
* If a device is not yet associated with a domain, this function
* assigns it visible for the hardware
* If a device is not yet associated with a domain, this function makes the
* device visible in the domain
*/
static int attach_device(struct device *dev,
struct protection_domain *domain)
@@ -2127,9 +2121,6 @@ static void __detach_device(struct iommu_dev_data *dev_data)
*/
WARN_ON(!irqs_disabled());
if (WARN_ON(!dev_data->domain))
return;
domain = dev_data->domain;
spin_lock(&domain->lock);
@@ -2151,6 +2142,15 @@ static void detach_device(struct device *dev)
dev_data = get_dev_data(dev);
domain = dev_data->domain;
/*
* First check if the device is still attached. It might already
* be detached from its domain because the generic
* iommu_detach_group code detached it and we try again here in
* our alias handling.
*/
if (WARN_ON(!dev_data->domain))
return;
/* lock device table */
spin_lock_irqsave(&amd_iommu_devtable_lock, flags);
__detach_device(dev_data);
@@ -2796,6 +2796,7 @@ static void cleanup_domain(struct protection_domain *domain)
while (!list_empty(&domain->dev_list)) {
entry = list_first_entry(&domain->dev_list,
struct iommu_dev_data, list);
BUG_ON(!entry->domain);
__detach_device(entry);
}