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Date: Thu, 26 Mar 2015 13:43:14 +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 11/16] iommu/msm: 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/msm_iommu.c | 73 +++++++++++++++++++++++------------------------
1 file changed, 36 insertions(+), 37 deletions(-)
diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index e1b0537..15a2063 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c
@@ -52,8 +52,14 @@ DEFINE_SPINLOCK(msm_iommu_lock);
struct msm_priv {
unsigned long *pgtable;
struct list_head list_attached;
+ struct iommu_domain domain;
};
+static struct msm_priv *to_msm_priv(struct iommu_domain *dom)
+{
+ return container_of(dom, struct msm_priv, domain);
+}
+
static int __enable_clocks(struct msm_iommu_drvdata *drvdata)
{
int ret;
@@ -79,7 +85,7 @@ static void __disable_clocks(struct msm_iommu_drvdata *drvdata)
static int __flush_iotlb(struct iommu_domain *domain)
{
- struct msm_priv *priv = domain->priv;
+ struct msm_priv *priv = to_msm_priv(domain);
struct msm_iommu_drvdata *iommu_drvdata;
struct msm_iommu_ctx_drvdata *ctx_drvdata;
int ret = 0;
@@ -209,10 +215,14 @@ static void __program_context(void __iomem *base, int ctx, phys_addr_t pgtable)
SET_M(base, ctx, 1);
}
-static int msm_iommu_domain_init(struct iommu_domain *domain)
+static struct iommu_domain *msm_iommu_domain_alloc(unsigned type)
{
- struct msm_priv *priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ struct msm_priv *priv;
+ if (type != IOMMU_DOMAIN_UNMANAGED)
+ return NULL;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
goto fail_nomem;
@@ -224,20 +234,19 @@ static int msm_iommu_domain_init(struct iommu_domain *domain)
goto fail_nomem;
memset(priv->pgtable, 0, SZ_16K);
- domain->priv = priv;
- domain->geometry.aperture_start = 0;
- domain->geometry.aperture_end = (1ULL << 32) - 1;
- domain->geometry.force_aperture = true;
+ priv->domain.geometry.aperture_start = 0;
+ priv->domain.geometry.aperture_end = (1ULL << 32) - 1;
+ priv->domain.geometry.force_aperture = true;
- return 0;
+ return &priv->domain;
fail_nomem:
kfree(priv);
- return -ENOMEM;
+ return NULL;
}
-static void msm_iommu_domain_destroy(struct iommu_domain *domain)
+static void msm_iommu_domain_free(struct iommu_domain *domain)
{
struct msm_priv *priv;
unsigned long flags;
@@ -245,20 +254,17 @@ static void msm_iommu_domain_destroy(struct iommu_domain *domain)
int i;
spin_lock_irqsave(&msm_iommu_lock, flags);
- priv = domain->priv;
- domain->priv = NULL;
+ priv = to_msm_priv(domain);
- if (priv) {
- fl_table = priv->pgtable;
+ fl_table = priv->pgtable;
- for (i = 0; i < NUM_FL_PTE; i++)
- if ((fl_table[i] & 0x03) == FL_TYPE_TABLE)
- free_page((unsigned long) __va(((fl_table[i]) &
- FL_BASE_MASK)));
+ for (i = 0; i < NUM_FL_PTE; i++)
+ if ((fl_table[i] & 0x03) == FL_TYPE_TABLE)
+ free_page((unsigned long) __va(((fl_table[i]) &
+ FL_BASE_MASK)));
- free_pages((unsigned long)priv->pgtable, get_order(SZ_16K));
- priv->pgtable = NULL;
- }
+ free_pages((unsigned long)priv->pgtable, get_order(SZ_16K));
+ priv->pgtable = NULL;
kfree(priv);
spin_unlock_irqrestore(&msm_iommu_lock, flags);
@@ -276,9 +282,9 @@ static int msm_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
spin_lock_irqsave(&msm_iommu_lock, flags);
- priv = domain->priv;
+ priv = to_msm_priv(domain);
- if (!priv || !dev) {
+ if (!dev) {
ret = -EINVAL;
goto fail;
}
@@ -330,9 +336,9 @@ static void msm_iommu_detach_dev(struct iommu_domain *domain,
int ret;
spin_lock_irqsave(&msm_iommu_lock, flags);
- priv = domain->priv;
+ priv = to_msm_priv(domain);
- if (!priv || !dev)
+ if (!dev)
goto fail;
iommu_drvdata = dev_get_drvdata(dev->parent);
@@ -382,11 +388,7 @@ static int msm_iommu_map(struct iommu_domain *domain, unsigned long va,
goto fail;
}
- priv = domain->priv;
- if (!priv) {
- ret = -EINVAL;
- goto fail;
- }
+ priv = to_msm_priv(domain);
fl_table = priv->pgtable;
@@ -484,10 +486,7 @@ static size_t msm_iommu_unmap(struct iommu_domain *domain, unsigned long va,
spin_lock_irqsave(&msm_iommu_lock, flags);
- priv = domain->priv;
-
- if (!priv)
- goto fail;
+ priv = to_msm_priv(domain);
fl_table = priv->pgtable;
@@ -566,7 +565,7 @@ static phys_addr_t msm_iommu_iova_to_phys(struct iommu_domain *domain,
spin_lock_irqsave(&msm_iommu_lock, flags);
- priv = domain->priv;
+ priv = to_msm_priv(domain);
if (list_empty(&priv->list_attached))
goto fail;
@@ -674,8 +673,8 @@ fail:
static const struct iommu_ops msm_iommu_ops = {
.capable = msm_iommu_capable,
- .domain_init = msm_iommu_domain_init,
- .domain_destroy = msm_iommu_domain_destroy,
+ .domain_alloc = msm_iommu_domain_alloc,
+ .domain_free = msm_iommu_domain_free,
.attach_dev = msm_iommu_attach_dev,
.detach_dev = msm_iommu_detach_dev,
.map = msm_iommu_map,
--
1.9.1
--
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