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Message-Id: <1355678760-27357-11-git-send-email-laurent.pinchart+renesas@ideasonboard.com>
Date: Sun, 16 Dec 2012 18:25:56 +0100
From: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
To: Hideki EIRAKU <hdk@...l.co.jp>
Cc: Paul Mundt <lethal@...ux-sh.org>,
Magnus Damm <magnus.damm@...il.com>,
Simon Horman <horms@...ge.net.au>, linux-sh@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Marek Szyprowski <m.szyprowski@...sung.com>,
Katsuya MATSUBARA <matsu@...l.co.jp>,
Damian Hobson-Garcia <dhobsong@...l.co.jp>
Subject: [PATCH/WIP/RFC 10/14] shmobile-ipmmu: Pass a struct shmobile_ipmmu to IPMMU functions
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
---
drivers/iommu/shmobile-iommu.c | 12 +++---
drivers/iommu/shmobile-ipmmu.c | 90 +++++++++++++++++++--------------------
drivers/iommu/shmobile-ipmmu.h | 9 ++--
3 files changed, 55 insertions(+), 56 deletions(-)
diff --git a/drivers/iommu/shmobile-iommu.c b/drivers/iommu/shmobile-iommu.c
index 1a37be2..423993c 100644
--- a/drivers/iommu/shmobile-iommu.c
+++ b/drivers/iommu/shmobile-iommu.c
@@ -53,7 +53,7 @@ static spinlock_t lock;
static DEFINE_SPINLOCK(lock_add);
static struct shmobile_iommu_domain *attached;
static int num_attached_devices;
-static struct device *ipmmu_access_device;
+static struct shmobile_ipmmu *ipmmu_access_device;
static int shmobile_iommu_domain_init(struct iommu_domain *domain)
{
@@ -329,20 +329,20 @@ void ipmmu_add_device(struct device *dev)
spin_unlock(&lock_add);
}
-int ipmmu_iommu_init(struct device *dev)
+int ipmmu_iommu_init(struct shmobile_ipmmu *ipmmu)
{
- dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
- l1pool = dma_pool_create("shmobile-iommu-pgtable1", dev,
+ dma_set_coherent_mask(ipmmu->dev, DMA_BIT_MASK(32));
+ l1pool = dma_pool_create("shmobile-iommu-pgtable1", ipmmu->dev,
L1_SIZE, L1_ALIGN, 0);
if (!l1pool)
goto nomem_pool1;
- l2pool = dma_pool_create("shmobile-iommu-pgtable2", dev,
+ l2pool = dma_pool_create("shmobile-iommu-pgtable2", ipmmu->dev,
L2_SIZE, L2_ALIGN, 0);
if (!l2pool)
goto nomem_pool2;
spin_lock_init(&lock);
attached = NULL;
- ipmmu_access_device = dev;
+ ipmmu_access_device = ipmmu;
bus_set_iommu(&platform_bus_type, &shmobile_iommu_ops);
if (shmobile_iommu_attach_all_devices())
pr_err("shmobile_iommu_attach_all_devices failed\n");
diff --git a/drivers/iommu/shmobile-ipmmu.c b/drivers/iommu/shmobile-ipmmu.c
index b308292..9858c91 100644
--- a/drivers/iommu/shmobile-ipmmu.c
+++ b/drivers/iommu/shmobile-ipmmu.c
@@ -34,99 +34,97 @@
#define IMCTR1_TLBEN (1 << 0)
#define IMCTR1_FLUSH (1 << 1)
-static void ipmmu_reg_write(struct shmobile_ipmmu *priv, unsigned long reg_off,
+static void ipmmu_reg_write(struct shmobile_ipmmu *ipmmu, unsigned long reg_off,
unsigned long data)
{
- iowrite32(data, priv->ipmmu_base + reg_off);
+ iowrite32(data, ipmmu->ipmmu_base + reg_off);
}
-void ipmmu_tlb_flush(struct device *dev)
+void ipmmu_tlb_flush(struct shmobile_ipmmu *ipmmu)
{
- struct shmobile_ipmmu *priv;
-
- if (!dev)
+ if (!ipmmu)
return;
- priv = dev_get_drvdata(dev);
- mutex_lock(&priv->flush_lock);
- if (priv->tlb_enabled)
- ipmmu_reg_write(priv, IMCTR1, IMCTR1_FLUSH | IMCTR1_TLBEN);
+
+ mutex_lock(&ipmmu->flush_lock);
+ if (ipmmu->tlb_enabled)
+ ipmmu_reg_write(ipmmu, IMCTR1, IMCTR1_FLUSH | IMCTR1_TLBEN);
else
- ipmmu_reg_write(priv, IMCTR1, IMCTR1_FLUSH);
- mutex_unlock(&priv->flush_lock);
+ ipmmu_reg_write(ipmmu, IMCTR1, IMCTR1_FLUSH);
+ mutex_unlock(&ipmmu->flush_lock);
}
-void ipmmu_tlb_set(struct device *dev, unsigned long phys, int size, int asid)
+void ipmmu_tlb_set(struct shmobile_ipmmu *ipmmu, unsigned long phys, int size,
+ int asid)
{
- struct shmobile_ipmmu *priv;
-
- if (!dev)
+ if (!ipmmu)
return;
- priv = dev_get_drvdata(dev);
- mutex_lock(&priv->flush_lock);
+
+ mutex_lock(&ipmmu->flush_lock);
switch (size) {
default:
- priv->tlb_enabled = 0;
+ ipmmu->tlb_enabled = 0;
break;
case 0x2000:
- ipmmu_reg_write(priv, IMTTBCR, 1);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 1);
+ ipmmu->tlb_enabled = 1;
break;
case 0x1000:
- ipmmu_reg_write(priv, IMTTBCR, 2);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 2);
+ ipmmu->tlb_enabled = 1;
break;
case 0x800:
- ipmmu_reg_write(priv, IMTTBCR, 3);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 3);
+ ipmmu->tlb_enabled = 1;
break;
case 0x400:
- ipmmu_reg_write(priv, IMTTBCR, 4);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 4);
+ ipmmu->tlb_enabled = 1;
break;
case 0x200:
- ipmmu_reg_write(priv, IMTTBCR, 5);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 5);
+ ipmmu->tlb_enabled = 1;
break;
case 0x100:
- ipmmu_reg_write(priv, IMTTBCR, 6);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 6);
+ ipmmu->tlb_enabled = 1;
break;
case 0x80:
- ipmmu_reg_write(priv, IMTTBCR, 7);
- priv->tlb_enabled = 1;
+ ipmmu_reg_write(ipmmu, IMTTBCR, 7);
+ ipmmu->tlb_enabled = 1;
break;
}
- ipmmu_reg_write(priv, IMTTBR, phys);
- ipmmu_reg_write(priv, IMASID, asid);
- mutex_unlock(&priv->flush_lock);
+ ipmmu_reg_write(ipmmu, IMTTBR, phys);
+ ipmmu_reg_write(ipmmu, IMASID, asid);
+ mutex_unlock(&ipmmu->flush_lock);
}
static int ipmmu_probe(struct platform_device *pdev)
{
+ struct shmobile_ipmmu *ipmmu;
struct resource *res;
- struct shmobile_ipmmu *priv;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "cannot get platform resources\n");
return -ENOENT;
}
- priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv) {
+ ipmmu = devm_kzalloc(&pdev->dev, sizeof(*ipmmu), GFP_KERNEL);
+ if (!ipmmu) {
dev_err(&pdev->dev, "cannot allocate device data\n");
return -ENOMEM;
}
- mutex_init(&priv->flush_lock);
- priv->ipmmu_base = devm_ioremap_nocache(&pdev->dev, res->start,
+ mutex_init(&ipmmu->flush_lock);
+ ipmmu->dev = &pdev->dev;
+ ipmmu->ipmmu_base = devm_ioremap_nocache(&pdev->dev, res->start,
resource_size(res));
- if (!priv->ipmmu_base) {
+ if (!ipmmu->ipmmu_base) {
dev_err(&pdev->dev, "ioremap_nocache failed\n");
return -ENOMEM;
}
- platform_set_drvdata(pdev, priv);
- ipmmu_reg_write(priv, IMCTR1, 0x0); /* disable TLB */
- ipmmu_reg_write(priv, IMCTR2, 0x0); /* disable PMB */
- ipmmu_iommu_init(&pdev->dev);
+ platform_set_drvdata(pdev, ipmmu);
+ ipmmu_reg_write(ipmmu, IMCTR1, 0x0); /* disable TLB */
+ ipmmu_reg_write(ipmmu, IMCTR2, 0x0); /* disable PMB */
+ ipmmu_iommu_init(ipmmu);
return 0;
}
diff --git a/drivers/iommu/shmobile-ipmmu.h b/drivers/iommu/shmobile-ipmmu.h
index 5c17a46..1458a97 100644
--- a/drivers/iommu/shmobile-ipmmu.h
+++ b/drivers/iommu/shmobile-ipmmu.h
@@ -2,18 +2,19 @@
#define __SHMOBILE_IPMMU_H__
struct shmobile_ipmmu {
+ struct device *dev;
void __iomem *ipmmu_base;
int tlb_enabled;
struct mutex flush_lock;
};
#ifdef CONFIG_SHMOBILE_IPMMU_TLB
-void ipmmu_tlb_flush(struct device *ipmmu_dev);
-void ipmmu_tlb_set(struct device *ipmmu_dev, unsigned long phys, int size,
+void ipmmu_tlb_flush(struct shmobile_ipmmu *ipmmu);
+void ipmmu_tlb_set(struct shmobile_ipmmu *ipmmu, unsigned long phys, int size,
int asid);
-int ipmmu_iommu_init(struct device *dev);
+int ipmmu_iommu_init(struct shmobile_ipmmu *ipmmu);
#else
-static int ipmmu_iommu_init(struct device *dev)
+static int ipmmu_iommu_init(struct shmobile_ipmmu *ipmmu)
{
return -EINVAL;
}
--
1.7.8.6
--
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