Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
---
drivers/iommu/shmobile-iommu.c | 152 ++++++++++++++++++++--------------------
1 files changed, 76 insertions(+), 76 deletions(-)
diff --git a/drivers/iommu/shmobile-iommu.c b/drivers/iommu/shmobile-iommu.c
index 463da32..1a37be2 100644
--- a/drivers/iommu/shmobile-iommu.c
+++ b/drivers/iommu/shmobile-iommu.c
@@ -35,13 +35,13 @@
#define L2_LEN (L2_SIZE / 4)
#define L2_ALIGN L2_SIZE
-struct shmobile_iommu_priv_pgtable {
+struct shmobile_iommu_domain_pgtable {
uint32_t *pgtable;
dma_addr_t handle;
};
-struct shmobile_iommu_priv {
- struct shmobile_iommu_priv_pgtable l1, l2[L1_LEN];
+struct shmobile_iommu_domain {
+ struct shmobile_iommu_domain_pgtable l1, l2[L1_LEN];
spinlock_t map_lock;
atomic_t active;
};
@@ -51,64 +51,64 @@ static struct device *ipmmu_devices;
static struct dma_pool *l1pool, *l2pool;
static spinlock_t lock;
static DEFINE_SPINLOCK(lock_add);
-static struct shmobile_iommu_priv *attached;
+static struct shmobile_iommu_domain *attached;
static int num_attached_devices;
static struct device *ipmmu_access_device;
static int shmobile_iommu_domain_init(struct iommu_domain *domain)
{
- struct shmobile_iommu_priv *priv;
+ struct shmobile_iommu_domain *sh_domain;
int i;
- priv = kmalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv)
+ sh_domain = kmalloc(sizeof(*sh_domain), GFP_KERNEL);
+ if (!sh_domain)
return -ENOMEM;
- priv->l1.pgtable = dma_pool_alloc(l1pool, GFP_KERNEL,
- &priv->l1.handle);
- if (!priv->l1.pgtable) {
- kfree(priv);
+ sh_domain->l1.pgtable = dma_pool_alloc(l1pool, GFP_KERNEL,
+ &sh_domain->l1.handle);
+ if (!sh_domain->l1.pgtable) {
+ kfree(sh_domain);
return -ENOMEM;
}
for (i = 0; i < L1_LEN; i++)
- priv->l2[i].pgtable = NULL;
- memset(priv->l1.pgtable, 0, L1_SIZE);
- spin_lock_init(&priv->map_lock);
- atomic_set(&priv->active, 0);
- domain->priv = priv;
+ sh_domain->l2[i].pgtable = NULL;
+ memset(sh_domain->l1.pgtable, 0, L1_SIZE);
+ spin_lock_init(&sh_domain->map_lock);
+ atomic_set(&sh_domain->active, 0);
+ domain->priv = sh_domain;
return 0;
}
static void shmobile_iommu_domain_destroy(struct iommu_domain *domain)
{
- struct shmobile_iommu_priv *priv = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = domain->priv;
int i;
for (i = 0; i < L1_LEN; i++) {
- if (priv->l2[i].pgtable)
- dma_pool_free(l2pool, priv->l2[i].pgtable,
- priv->l2[i].handle);
+ if (sh_domain->l2[i].pgtable)
+ dma_pool_free(l2pool, sh_domain->l2[i].pgtable,
+ sh_domain->l2[i].handle);
}
- dma_pool_free(l1pool, priv->l1.pgtable, priv->l1.handle);
- kfree(priv);
+ dma_pool_free(l1pool, sh_domain->l1.pgtable, sh_domain->l1.handle);
+ kfree(sh_domain);
domain->priv = NULL;
}
static int shmobile_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct shmobile_iommu_priv *priv = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = domain->priv;
int ret = -EBUSY;
spin_lock(&lock);
- if (attached != priv) {
+ if (attached != sh_domain) {
if (attached)
goto err;
- atomic_set(&priv->active, 1);
- ipmmu_tlb_set(ipmmu_access_device, priv->l1.handle, L1_SIZE,
+ atomic_set(&sh_domain->active, 1);
+ ipmmu_tlb_set(ipmmu_access_device, sh_domain->l1.handle,
L1_SIZE,
0);
wmb();
ipmmu_tlb_flush(ipmmu_access_device);
- attached = priv;
+ attached = sh_domain;
num_attached_devices = 0;
}
num_attached_devices++;
@@ -121,10 +121,10 @@ err:
static void shmobile_iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct shmobile_iommu_priv *priv = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = domain->priv;
spin_lock(&lock);
- atomic_set(&priv->active, 0);
+ atomic_set(&sh_domain->active, 0);
num_attached_devices--;
if (!num_attached_devices) {
ipmmu_tlb_set(ipmmu_access_device, 0, 0, 0);
@@ -135,34 +135,34 @@ static void shmobile_iommu_detach_device(struct
iommu_domain *domain,
}
static int
-l2alloc(struct shmobile_iommu_priv *priv, unsigned int l1index)
+l2alloc(struct shmobile_iommu_domain *sh_domain, unsigned int l1index)
{
- if (!priv->l2[l1index].pgtable) {
- priv->l2[l1index].pgtable = dma_pool_alloc(l2pool, GFP_KERNEL,
- &priv->l2[l1index].handle);
- if (!priv->l2[l1index].pgtable)
+ if (!sh_domain->l2[l1index].pgtable) {
+ sh_domain->l2[l1index].pgtable = dma_pool_alloc(l2pool,
GFP_KERNEL,
+ &sh_domain->l2[l1index].handle);
+ if (!sh_domain->l2[l1index].pgtable)
return -ENOMEM;
- memset(priv->l2[l1index].pgtable, 0, L2_SIZE);
+ memset(sh_domain->l2[l1index].pgtable, 0, L2_SIZE);
}
- priv->l1.pgtable[l1index] = priv->l2[l1index].handle | 0x1;
+ sh_domain->l1.pgtable[l1index] = sh_domain->l2[l1index].handle | 0x1;
return 0;
}
static void
-l2realfree(struct shmobile_iommu_priv_pgtable *l2)
+l2realfree(struct shmobile_iommu_domain_pgtable *l2)
{
if (l2->pgtable)
dma_pool_free(l2pool, l2->pgtable, l2->handle);
}
static int
-l2free(struct shmobile_iommu_priv *priv, unsigned int l1index,
- struct shmobile_iommu_priv_pgtable *l2)
+l2free(struct shmobile_iommu_domain *sh_domain, unsigned int l1index,
+ struct shmobile_iommu_domain_pgtable *l2)
{
- priv->l1.pgtable[l1index] = 0;
- if (priv->l2[l1index].pgtable) {
- *l2 = priv->l2[l1index];
- priv->l2[l1index].pgtable = NULL;
+ sh_domain->l1.pgtable[l1index] = 0;
+ if (sh_domain->l2[l1index].pgtable) {
+ *l2 = sh_domain->l2[l1index];
+ sh_domain->l2[l1index].pgtable = NULL;
}
return 0;
}
@@ -170,8 +170,8 @@ l2free(struct shmobile_iommu_priv *priv, unsigned int
l1index,
static int shmobile_iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot)
{
- struct shmobile_iommu_priv_pgtable l2 = { .pgtable = NULL };
- struct shmobile_iommu_priv *priv = domain->priv;
+ struct shmobile_iommu_domain_pgtable l2 = { .pgtable = NULL };
+ struct shmobile_iommu_domain *sh_domain = domain->priv;
unsigned int l1index, l2index, i;
int ret;
@@ -179,34 +179,34 @@ static int shmobile_iommu_map(struct iommu_domain
*domain, unsigned long iova,
switch (size) {
case 0x1000:
l2index = (iova >> 12) & 0xff;
- spin_lock(&priv->map_lock);
- ret = l2alloc(priv, l1index);
+ spin_lock(&sh_domain->map_lock);
+ ret = l2alloc(sh_domain, l1index);
if (!ret)
- priv->l2[l1index].pgtable[l2index] = paddr | 0xff2;
- spin_unlock(&priv->map_lock);
+ sh_domain->l2[l1index].pgtable[l2index] = paddr | 0xff2;
+ spin_unlock(&sh_domain->map_lock);
break;
case 0x10000:
l2index = (iova >> 12) & 0xf0;
- spin_lock(&priv->map_lock);
- ret = l2alloc(priv, l1index);
+ spin_lock(&sh_domain->map_lock);
+ ret = l2alloc(sh_domain, l1index);
if (!ret) {
for (i = 0; i < 0x10; i++)
- priv->l2[l1index].pgtable[l2index + i] =
+ sh_domain->l2[l1index].pgtable[l2index + i] =
paddr | 0xff1;
}
- spin_unlock(&priv->map_lock);
+ spin_unlock(&sh_domain->map_lock);
break;
case 0x100000:
- spin_lock(&priv->map_lock);
- l2free(priv, l1index, &l2);
- priv->l1.pgtable[l1index] = paddr | 0xc02;
- spin_unlock(&priv->map_lock);
+ spin_lock(&sh_domain->map_lock);
+ l2free(sh_domain, l1index, &l2);
+ sh_domain->l1.pgtable[l1index] = paddr | 0xc02;
+ spin_unlock(&sh_domain->map_lock);
ret = 0;
break;
default:
ret = -EINVAL;
}
- if (!ret && atomic_read(&priv->active)) {
+ if (!ret && atomic_read(&sh_domain->active)) {
wmb();
ipmmu_tlb_flush(ipmmu_access_device);
l2realfree(&l2);
@@ -217,40 +217,40 @@ static int shmobile_iommu_map(struct iommu_domain
*domain, unsigned long iova,
static size_t shmobile_iommu_unmap(struct iommu_domain *domain,
unsigned long iova, size_t size)
{
- struct shmobile_iommu_priv_pgtable l2 = { .pgtable = NULL };
- struct shmobile_iommu_priv *priv = domain->priv;
+ struct shmobile_iommu_domain_pgtable l2 = { .pgtable = NULL };
+ struct shmobile_iommu_domain *sh_domain = domain->priv;
unsigned int l1index, l2index, i;
uint32_t l2entry = 0;
size_t ret = 0;
l1index = iova >> 20;
if (!(iova & 0xFFFFF) && size >= 0x100000) {
- spin_lock(&priv->map_lock);
- l2free(priv, l1index, &l2);
- spin_unlock(&priv->map_lock);
+ spin_lock(&sh_domain->map_lock);
+ l2free(sh_domain, l1index, &l2);
+ spin_unlock(&sh_domain->map_lock);
ret = 0x100000;
goto done;
}
l2index = (iova >> 12) & 0xff;
- spin_lock(&priv->map_lock);
- if (priv->l2[l1index].pgtable)
- l2entry = priv->l2[l1index].pgtable[l2index];
+ spin_lock(&sh_domain->map_lock);
+ if (sh_domain->l2[l1index].pgtable)
+ l2entry = sh_domain->l2[l1index].pgtable[l2index];
switch (l2entry & 3) {
case 1:
if (l2index & 0xf)
break;
for (i = 0; i < 0x10; i++)
- priv->l2[l1index].pgtable[l2index + i] = 0;
+ sh_domain->l2[l1index].pgtable[l2index + i] = 0;
ret = 0x10000;
break;
case 2:
- priv->l2[l1index].pgtable[l2index] = 0;
+ sh_domain->l2[l1index].pgtable[l2index] = 0;
ret = 0x1000;
break;
}
- spin_unlock(&priv->map_lock);
+ spin_unlock(&sh_domain->map_lock);
done:
- if (ret && atomic_read(&priv->active)) {
+ if (ret && atomic_read(&sh_domain->active)) {
wmb();
ipmmu_tlb_flush(ipmmu_access_device);
l2realfree(&l2);
@@ -261,18 +261,18 @@ done:
static phys_addr_t shmobile_iommu_iova_to_phys(struct iommu_domain *domain,
unsigned long iova)
{
- struct shmobile_iommu_priv *priv = domain->priv;
+ struct shmobile_iommu_domain *sh_domain = domain->priv;
uint32_t l1entry = 0, l2entry = 0;
unsigned int l1index, l2index;
l1index = iova >> 20;
l2index = (iova >> 12) & 0xff;
- spin_lock(&priv->map_lock);
- if (priv->l2[l1index].pgtable)
- l2entry = priv->l2[l1index].pgtable[l2index];
+ spin_lock(&sh_domain->map_lock);
+ if (sh_domain->l2[l1index].pgtable)
+ l2entry = sh_domain->l2[l1index].pgtable[l2index];
else
- l1entry = priv->l1.pgtable[l1index];
- spin_unlock(&priv->map_lock);
+ l1entry = sh_domain->l1.pgtable[l1index];
+ spin_unlock(&sh_domain->map_lock);
switch (l2entry & 3) {
case 1:
return (l2entry & ~0xffff) | (iova & 0xffff);
--
1.7.8.6
--
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