| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1427373799-18662-13-git-send-email-joro@8bytes.org>
Date: Thu, 26 Mar 2015 13:43:15 +0100
From: Joerg Roedel <joro@...tes.org>
To: iommu@...ts.linux-foundation.org
Cc: Will Deacon <will.deacon@....com>, Kukjin Kim <kgene@...nel.org>,
David Woodhouse <dwmw2@...radead.org>,
Heiko Stuebner <heiko@...ech.de>,
Hiroshi Doyu <hdoyu@...dia.com>,
Stephen Warren <swarren@...dotorg.org>,
Thierry Reding <thierry.reding@...il.com>,
Alexandre Courbot <gnurou@...il.com>,
Alex Williamson <alex.williamson@...hat.com>,
Arnd Bergmann <arnd@...db.de>,
Yingjoe Chen <yingjoe.chen@...iatek.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org,
linux-rockchip@...ts.infradead.org, linux-tegra@...r.kernel.org,
Joerg Roedel <joro@...tes.org>, jroedel@...e.de
Subject: [PATCH 12/16] iommu/shmobile: Make use of domain_alloc and domain_free
From: Joerg Roedel <jroedel@...e.de>
Implement domain_alloc and domain_free iommu-ops as a
replacement for domain_init/domain_destroy.
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
drivers/iommu/shmobile-iommu.c | 39 +++++++++++++++++++++++----------------
1 file changed, 23 insertions(+), 16 deletions(-)
diff --git a/drivers/iommu/shmobile-iommu.c b/drivers/iommu/shmobile-iommu.c
index f1b0077..a028751 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,
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists