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authorJoerg Roedel <jroedel@suse.de>2015-03-26 13:43:15 +0100
committerJoerg Roedel <jroedel@suse.de>2015-03-31 15:32:13 +0200
commitdc8fb227ad9029f071c7de0a97b12a810a376364 (patch)
treeb1b6748164405f7a76e6653ae6b8ec275cf6f206 /drivers/iommu
parent3e116c3cd2a99fb9628fe3169b454482a7f07047 (diff)
downloadlinux-dc8fb227ad9029f071c7de0a97b12a810a376364.tar.bz2
iommu/shmobile: Make use of domain_alloc and domain_free
Implement domain_alloc and domain_free iommu-ops as a replacement for domain_init/domain_destroy. Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/shmobile-iommu.c39
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/iommu/shmobile-iommu.c b/drivers/iommu/shmobile-iommu.c
index f1b00774e4de..a0287519a1d4 100644
--- a/drivers/iommu/shmobile-iommu.c
+++ b/drivers/iommu/shmobile-iommu.c
@@ -42,11 +42,17 @@ struct shmobile_iommu_domain {
spinlock_t map_lock;
spinlock_t attached_list_lock;
struct list_head attached_list;
+ struct iommu_domain domain;
};
static struct shmobile_iommu_archdata *ipmmu_archdata;
static struct kmem_cache *l1cache, *l2cache;
+static struct shmobile_iommu_domain *to_sh_domain(struct iommu_domain *dom)
+{
+ return container_of(dom, struct shmobile_iommu_domain, domain);
+}
+
static int pgtable_alloc(struct shmobile_iommu_domain_pgtable *pgtable,
struct kmem_cache *cache, size_t size)
{
@@ -82,31 +88,33 @@ static void pgtable_write(struct shmobile_iommu_domain_pgtable *pgtable,
sizeof(val) * count, DMA_TO_DEVICE);
}
-static int shmobile_iommu_domain_init(struct iommu_domain *domain)
+static struct iommu_domain *shmobile_iommu_domain_alloc(unsigned type)
{
struct shmobile_iommu_domain *sh_domain;
int i, ret;
- sh_domain = kmalloc(sizeof(*sh_domain), GFP_KERNEL);
+ if (type != IOMMU_DOMAIN_UNMANAGED)
+ return NULL;
+
+ sh_domain = kzalloc(sizeof(*sh_domain), GFP_KERNEL);
if (!sh_domain)
- return -ENOMEM;
+ return NULL;
ret = pgtable_alloc(&sh_domain->l1, l1cache, L1_SIZE);
if (ret < 0) {
kfree(sh_domain);
- return ret;
+ return NULL;
}
for (i = 0; i < L1_LEN; i++)
sh_domain->l2[i].pgtable = NULL;
spin_lock_init(&sh_domain->map_lock);
spin_lock_init(&sh_domain->attached_list_lock);
INIT_LIST_HEAD(&sh_domain->attached_list);
- domain->priv = sh_domain;
- return 0;
+ return &sh_domain->domain;
}
-static void shmobile_iommu_domain_destroy(struct iommu_domain *domain)
+static void shmobile_iommu_domain_free(struct iommu_domain *domain)
{
- struct shmobile_iommu_domain *sh_domain = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain);
int i;
for (i = 0; i < L1_LEN; i++) {
@@ -115,14 +123,13 @@ static void shmobile_iommu_domain_destroy(struct iommu_domain *domain)
}
pgtable_free(&sh_domain->l1, l1cache, L1_SIZE);
kfree(sh_domain);
- domain->priv = NULL;
}
static int shmobile_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
struct shmobile_iommu_archdata *archdata = dev->archdata.iommu;
- struct shmobile_iommu_domain *sh_domain = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain);
int ret = -EBUSY;
if (!archdata)
@@ -151,7 +158,7 @@ static void shmobile_iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
struct shmobile_iommu_archdata *archdata = dev->archdata.iommu;
- struct shmobile_iommu_domain *sh_domain = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain);
if (!archdata)
return;
@@ -214,7 +221,7 @@ static int shmobile_iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot)
{
struct shmobile_iommu_domain_pgtable l2 = { .pgtable = NULL };
- struct shmobile_iommu_domain *sh_domain = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain);
unsigned int l1index, l2index;
int ret;
@@ -258,7 +265,7 @@ static size_t shmobile_iommu_unmap(struct iommu_domain *domain,
unsigned long iova, size_t size)
{
struct shmobile_iommu_domain_pgtable l2 = { .pgtable = NULL };
- struct shmobile_iommu_domain *sh_domain = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain);
unsigned int l1index, l2index;
uint32_t l2entry = 0;
size_t ret = 0;
@@ -298,7 +305,7 @@ done:
static phys_addr_t shmobile_iommu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
- struct shmobile_iommu_domain *sh_domain = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain);
uint32_t l1entry = 0, l2entry = 0;
unsigned int l1index, l2index;
@@ -355,8 +362,8 @@ static int shmobile_iommu_add_device(struct device *dev)
}
static const struct iommu_ops shmobile_iommu_ops = {
- .domain_init = shmobile_iommu_domain_init,
- .domain_destroy = shmobile_iommu_domain_destroy,
+ .domain_alloc = shmobile_iommu_domain_alloc,
+ .domain_free = shmobile_iommu_domain_free,
.attach_dev = shmobile_iommu_attach_device,
.detach_dev = shmobile_iommu_detach_device,
.map = shmobile_iommu_map,