aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/iommu/amd_iommu.c37
-rw-r--r--drivers/iommu/iommu.c5
-rw-r--r--drivers/iommu/omap-iommu.c32
-rw-r--r--drivers/iommu/tegra-gart.c20
-rw-r--r--drivers/iommu/tegra-smmu.c2
-rw-r--r--drivers/remoteproc/remoteproc_core.c4
6 files changed, 73 insertions, 27 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index a5bee8e2dfce..d90a421e9cac 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -450,12 +450,27 @@ static void dump_command(unsigned long phys_addr)
static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
{
- u32 *event = __evt;
- int type = (event[1] >> EVENT_TYPE_SHIFT) & EVENT_TYPE_MASK;
- int devid = (event[0] >> EVENT_DEVID_SHIFT) & EVENT_DEVID_MASK;
- int domid = (event[1] >> EVENT_DOMID_SHIFT) & EVENT_DOMID_MASK;
- int flags = (event[1] >> EVENT_FLAGS_SHIFT) & EVENT_FLAGS_MASK;
- u64 address = (u64)(((u64)event[3]) << 32) | event[2];
+ int type, devid, domid, flags;
+ volatile u32 *event = __evt;
+ int count = 0;
+ u64 address;
+
+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;
+ flags = (event[1] >> EVENT_FLAGS_SHIFT) & EVENT_FLAGS_MASK;
+ address = (u64)(((u64)event[3]) << 32) | event[2];
+
+ if (type == 0) {
+ /* Did we hit the erratum? */
+ if (++count == LOOP_TIMEOUT) {
+ pr_err("AMD-Vi: No event written to event log\n");
+ return;
+ }
+ udelay(1);
+ goto retry;
+ }
printk(KERN_ERR "AMD-Vi: Event logged [");
@@ -508,6 +523,8 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
default:
printk(KERN_ERR "UNKNOWN type=0x%02x]\n", type);
}
+
+ memset(__evt, 0, 4 * sizeof(u32));
}
static void iommu_poll_events(struct amd_iommu *iommu)
@@ -2035,20 +2052,20 @@ out_err:
}
/* FIXME: Move this to PCI code */
-#define PCI_PRI_TLP_OFF (1 << 2)
+#define PCI_PRI_TLP_OFF (1 << 15)
bool pci_pri_tlp_required(struct pci_dev *pdev)
{
- u16 control;
+ u16 status;
int pos;
pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PRI);
if (!pos)
return false;
- pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control);
+ pci_read_config_word(pdev, pos + PCI_PRI_STATUS, &status);
- return (control & PCI_PRI_TLP_OFF) ? true : false;
+ return (status & PCI_PRI_TLP_OFF) ? true : false;
}
/*
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 2198b2dbbcd3..8b9ded88e6f5 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -119,6 +119,7 @@ EXPORT_SYMBOL_GPL(iommu_present);
* iommu_set_fault_handler() - set a fault handler for an iommu domain
* @domain: iommu domain
* @handler: fault handler
+ * @token: user data, will be passed back to the fault handler
*
* This function should be used by IOMMU users which want to be notified
* whenever an IOMMU fault happens.
@@ -127,11 +128,13 @@ EXPORT_SYMBOL_GPL(iommu_present);
* error code otherwise.
*/
void iommu_set_fault_handler(struct iommu_domain *domain,
- iommu_fault_handler_t handler)
+ iommu_fault_handler_t handler,
+ void *token)
{
BUG_ON(!domain);
domain->handler = handler;
+ domain->handler_token = token;
}
EXPORT_SYMBOL_GPL(iommu_set_fault_handler);
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 6899dcd02dfa..e70ee2b59df9 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -41,11 +41,13 @@
* @pgtable: the page table
* @iommu_dev: an omap iommu device attached to this domain. only a single
* iommu device can be attached for now.
+ * @dev: Device using this domain.
* @lock: domain lock, should be taken when attaching/detaching
*/
struct omap_iommu_domain {
u32 *pgtable;
struct omap_iommu *iommu_dev;
+ struct device *dev;
spinlock_t lock;
};
@@ -1081,6 +1083,7 @@ omap_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
}
omap_domain->iommu_dev = arch_data->iommu_dev = oiommu;
+ omap_domain->dev = dev;
oiommu->domain = domain;
out:
@@ -1088,19 +1091,16 @@ out:
return ret;
}
-static void omap_iommu_detach_dev(struct iommu_domain *domain,
- struct device *dev)
+static void _omap_iommu_detach_dev(struct omap_iommu_domain *omap_domain,
+ struct device *dev)
{
- struct omap_iommu_domain *omap_domain = domain->priv;
- struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
struct omap_iommu *oiommu = dev_to_omap_iommu(dev);
-
- spin_lock(&omap_domain->lock);
+ struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
/* only a single device is supported per domain for now */
if (omap_domain->iommu_dev != oiommu) {
dev_err(dev, "invalid iommu device\n");
- goto out;
+ return;
}
iopgtable_clear_entry_all(oiommu);
@@ -1108,8 +1108,16 @@ static void omap_iommu_detach_dev(struct iommu_domain *domain,
omap_iommu_detach(oiommu);
omap_domain->iommu_dev = arch_data->iommu_dev = NULL;
+ omap_domain->dev = NULL;
+}
-out:
+static void omap_iommu_detach_dev(struct iommu_domain *domain,
+ struct device *dev)
+{
+ struct omap_iommu_domain *omap_domain = domain->priv;
+
+ spin_lock(&omap_domain->lock);
+ _omap_iommu_detach_dev(omap_domain, dev);
spin_unlock(&omap_domain->lock);
}
@@ -1148,13 +1156,19 @@ out:
return -ENOMEM;
}
-/* assume device was already detached */
static void omap_iommu_domain_destroy(struct iommu_domain *domain)
{
struct omap_iommu_domain *omap_domain = domain->priv;
domain->priv = NULL;
+ /*
+ * An iommu device is still attached
+ * (currently, only one device can be attached) ?
+ */
+ if (omap_domain->iommu_dev)
+ _omap_iommu_detach_dev(omap_domain, omap_domain->dev);
+
kfree(omap_domain->pgtable);
kfree(omap_domain);
}
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 779306ee7b16..0c0a37792218 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -29,15 +29,17 @@
#include <linux/device.h>
#include <linux/io.h>
#include <linux/iommu.h>
+#include <linux/of.h>
#include <asm/cacheflush.h>
/* bitmap of the page sizes currently supported */
#define GART_IOMMU_PGSIZES (SZ_4K)
-#define GART_CONFIG 0x24
-#define GART_ENTRY_ADDR 0x28
-#define GART_ENTRY_DATA 0x2c
+#define GART_REG_BASE 0x24
+#define GART_CONFIG (0x24 - GART_REG_BASE)
+#define GART_ENTRY_ADDR (0x28 - GART_REG_BASE)
+#define GART_ENTRY_DATA (0x2c - GART_REG_BASE)
#define GART_ENTRY_PHYS_ADDR_VALID (1 << 31)
#define GART_PAGE_SHIFT 12
@@ -158,7 +160,7 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain,
struct gart_client *client, *c;
int err = 0;
- gart = dev_get_drvdata(dev->parent);
+ gart = gart_handle;
if (!gart)
return -EINVAL;
domain->priv = gart;
@@ -422,6 +424,14 @@ const struct dev_pm_ops tegra_gart_pm_ops = {
.resume = tegra_gart_resume,
};
+#ifdef CONFIG_OF
+static struct of_device_id tegra_gart_of_match[] __devinitdata = {
+ { .compatible = "nvidia,tegra20-gart", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, tegra_gart_of_match);
+#endif
+
static struct platform_driver tegra_gart_driver = {
.probe = tegra_gart_probe,
.remove = tegra_gart_remove,
@@ -429,6 +439,7 @@ static struct platform_driver tegra_gart_driver = {
.owner = THIS_MODULE,
.name = "tegra-gart",
.pm = &tegra_gart_pm_ops,
+ .of_match_table = of_match_ptr(tegra_gart_of_match),
},
};
@@ -448,4 +459,5 @@ module_exit(tegra_gart_exit);
MODULE_DESCRIPTION("IOMMU API for GART in Tegra20");
MODULE_AUTHOR("Hiroshi DOYU <hdoyu@nvidia.com>");
+MODULE_ALIAS("platform:tegra-gart");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index eb93c821f592..ecd679043d77 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -733,7 +733,7 @@ static int smmu_iommu_attach_dev(struct iommu_domain *domain,
pr_info("Reserve \"page zero\" for AVP vectors using a common dummy\n");
}
- dev_dbg(smmu->dev, "%s is attached\n", dev_name(c->dev));
+ dev_dbg(smmu->dev, "%s is attached\n", dev_name(dev));
return 0;
err_client:
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index d6f8adaa26ef..8ea7bccc7100 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -78,7 +78,7 @@ typedef int (*rproc_handle_resource_t)(struct rproc *rproc, void *, int avail);
* the recovery of the remote processor.
*/
static int rproc_iommu_fault(struct iommu_domain *domain, struct device *dev,
- unsigned long iova, int flags)
+ unsigned long iova, int flags, void *token)
{
dev_err(dev, "iommu fault: da 0x%lx flags 0x%x\n", iova, flags);
@@ -117,7 +117,7 @@ static int rproc_enable_iommu(struct rproc *rproc)
return -ENOMEM;
}
- iommu_set_fault_handler(domain, rproc_iommu_fault);
+ iommu_set_fault_handler(domain, rproc_iommu_fault, rproc);
ret = iommu_attach_device(domain, dev);
if (ret) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.