Merge branches 'iommu/fixes', 'x86/vt-d', 'x86/amd', 'arm/smmu', 'arm/tegra' and 'core' into next
Conflicts:
drivers/iommu/amd_iommu.c
drivers/iommu/tegra-gart.c
drivers/iommu/tegra-smmu.c
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index c48da05..37e708f 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -63,11 +63,21 @@
struct device *dev;
};
+struct gart_domain {
+ struct iommu_domain domain; /* generic domain handle */
+ struct gart_device *gart; /* link to gart device */
+};
+
static struct gart_device *gart_handle; /* unique for a system */
#define GART_PTE(_pfn) \
(GART_ENTRY_PHYS_ADDR_VALID | ((_pfn) << PAGE_SHIFT))
+static struct gart_domain *to_gart_domain(struct iommu_domain *dom)
+{
+ return container_of(dom, struct gart_domain, domain);
+}
+
/*
* Any interaction between any block on PPSB and a block on APB or AHB
* must have these read-back to ensure the APB/AHB bus transaction is
@@ -156,20 +166,11 @@
static int gart_iommu_attach_dev(struct iommu_domain *domain,
struct device *dev)
{
- struct gart_device *gart;
+ struct gart_domain *gart_domain = to_gart_domain(domain);
+ struct gart_device *gart = gart_domain->gart;
struct gart_client *client, *c;
int err = 0;
- gart = gart_handle;
- if (!gart)
- return -EINVAL;
- domain->priv = gart;
-
- domain->geometry.aperture_start = gart->iovmm_base;
- domain->geometry.aperture_end = gart->iovmm_base +
- gart->page_count * GART_PAGE_SIZE - 1;
- domain->geometry.force_aperture = true;
-
client = devm_kzalloc(gart->dev, sizeof(*c), GFP_KERNEL);
if (!client)
return -ENOMEM;
@@ -198,7 +199,8 @@
static void gart_iommu_detach_dev(struct iommu_domain *domain,
struct device *dev)
{
- struct gart_device *gart = domain->priv;
+ struct gart_domain *gart_domain = to_gart_domain(domain);
+ struct gart_device *gart = gart_domain->gart;
struct gart_client *c;
spin_lock(&gart->client_lock);
@@ -216,33 +218,55 @@
spin_unlock(&gart->client_lock);
}
-static int gart_iommu_domain_init(struct iommu_domain *domain)
+static struct iommu_domain *gart_iommu_domain_alloc(unsigned type)
{
- return 0;
+ struct gart_domain *gart_domain;
+ struct gart_device *gart;
+
+ if (type != IOMMU_DOMAIN_UNMANAGED)
+ return NULL;
+
+ gart = gart_handle;
+ if (!gart)
+ return NULL;
+
+ gart_domain = kzalloc(sizeof(*gart_domain), GFP_KERNEL);
+ if (!gart_domain)
+ return NULL;
+
+ gart_domain->gart = gart;
+ gart_domain->domain.geometry.aperture_start = gart->iovmm_base;
+ gart_domain->domain.geometry.aperture_end = gart->iovmm_base +
+ gart->page_count * GART_PAGE_SIZE - 1;
+ gart_domain->domain.geometry.force_aperture = true;
+
+ return &gart_domain->domain;
}
-static void gart_iommu_domain_destroy(struct iommu_domain *domain)
+static void gart_iommu_domain_free(struct iommu_domain *domain)
{
- struct gart_device *gart = domain->priv;
+ struct gart_domain *gart_domain = to_gart_domain(domain);
+ struct gart_device *gart = gart_domain->gart;
- if (!gart)
- return;
+ if (gart) {
+ spin_lock(&gart->client_lock);
+ if (!list_empty(&gart->client)) {
+ struct gart_client *c;
- spin_lock(&gart->client_lock);
- if (!list_empty(&gart->client)) {
- struct gart_client *c;
-
- list_for_each_entry(c, &gart->client, list)
- gart_iommu_detach_dev(domain, c->dev);
+ list_for_each_entry(c, &gart->client, list)
+ gart_iommu_detach_dev(domain, c->dev);
+ }
+ spin_unlock(&gart->client_lock);
}
- spin_unlock(&gart->client_lock);
- domain->priv = NULL;
+
+ kfree(gart_domain);
}
static int gart_iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t pa, size_t bytes, int prot)
{
- struct gart_device *gart = domain->priv;
+ struct gart_domain *gart_domain = to_gart_domain(domain);
+ struct gart_device *gart = gart_domain->gart;
unsigned long flags;
unsigned long pfn;
@@ -265,7 +289,8 @@
static size_t gart_iommu_unmap(struct iommu_domain *domain, unsigned long iova,
size_t bytes)
{
- struct gart_device *gart = domain->priv;
+ struct gart_domain *gart_domain = to_gart_domain(domain);
+ struct gart_device *gart = gart_domain->gart;
unsigned long flags;
if (!gart_iova_range_valid(gart, iova, bytes))
@@ -281,7 +306,8 @@
static phys_addr_t gart_iommu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
- struct gart_device *gart = domain->priv;
+ struct gart_domain *gart_domain = to_gart_domain(domain);
+ struct gart_device *gart = gart_domain->gart;
unsigned long pte;
phys_addr_t pa;
unsigned long flags;
@@ -310,8 +336,8 @@
static const struct iommu_ops gart_iommu_ops = {
.capable = gart_iommu_capable,
- .domain_init = gart_iommu_domain_init,
- .domain_destroy = gart_iommu_domain_destroy,
+ .domain_alloc = gart_iommu_domain_alloc,
+ .domain_free = gart_iommu_domain_free,
.attach_dev = gart_iommu_attach_dev,
.detach_dev = gart_iommu_detach_dev,
.map = gart_iommu_map,