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From: Joerg Roedel <joro@8bytes.org>
To: iommu@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-mediatek@lists.infradead.org, guohanjun@huawei.com,
Sudeep Holla <sudeep.holla@arm.com>,
Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Joerg Roedel <jroedel@suse.de>
Subject: [PATCH v3 10/15] iommu/arm-smmu: Use accessor functions for iommu private data
Date: Fri, 20 Mar 2020 10:14:09 +0100 [thread overview]
Message-ID: <20200320091414.3941-11-joro@8bytes.org> (raw)
In-Reply-To: <20200320091414.3941-1-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
Make use of dev_iommu_priv_set/get() functions and simplify the code
where possible with this change.
Tested-by: Will Deacon <will@kernel.org> # arm-smmu
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/arm-smmu.c | 57 +++++++++++++++++++++-------------------
1 file changed, 30 insertions(+), 27 deletions(-)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 980aae73b45b..7aa36e6c19c0 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -98,12 +98,15 @@ struct arm_smmu_master_cfg {
s16 smendx[];
};
#define INVALID_SMENDX -1
-#define __fwspec_cfg(fw) ((struct arm_smmu_master_cfg *)fw->iommu_priv)
-#define fwspec_smmu(fw) (__fwspec_cfg(fw)->smmu)
-#define fwspec_smendx(fw, i) \
- (i >= fw->num_ids ? INVALID_SMENDX : __fwspec_cfg(fw)->smendx[i])
-#define for_each_cfg_sme(fw, i, idx) \
- for (i = 0; idx = fwspec_smendx(fw, i), i < fw->num_ids; ++i)
+#define __fwspec_cfg(dev) ((struct arm_smmu_master_cfg *)dev_iommu_priv_get(dev))
+#define fwspec_smmu(dev) (__fwspec_cfg(dev)->smmu)
+#define fwspec_smendx(dev, i) \
+ (i >= dev_iommu_fwspec_get(dev)->num_ids ? \
+ INVALID_SMENDX : \
+ __fwspec_cfg(dev)->smendx[i])
+#define for_each_cfg_sme(dev, i, idx) \
+ for (i = 0; idx = fwspec_smendx(dev, i), \
+ i < dev_iommu_fwspec_get(dev)->num_ids; ++i)
static bool using_legacy_binding, using_generic_binding;
@@ -1061,7 +1064,7 @@ static bool arm_smmu_free_sme(struct arm_smmu_device *smmu, int idx)
static int arm_smmu_master_alloc_smes(struct device *dev)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct arm_smmu_master_cfg *cfg = fwspec->iommu_priv;
+ struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
struct arm_smmu_device *smmu = cfg->smmu;
struct arm_smmu_smr *smrs = smmu->smrs;
struct iommu_group *group;
@@ -1069,7 +1072,7 @@ static int arm_smmu_master_alloc_smes(struct device *dev)
mutex_lock(&smmu->stream_map_mutex);
/* Figure out a viable stream map entry allocation */
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(dev, i, idx) {
u16 sid = FIELD_GET(ARM_SMMU_SMR_ID, fwspec->ids[i]);
u16 mask = FIELD_GET(ARM_SMMU_SMR_MASK, fwspec->ids[i]);
@@ -1100,7 +1103,7 @@ static int arm_smmu_master_alloc_smes(struct device *dev)
iommu_group_put(group);
/* It worked! Now, poke the actual hardware */
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(dev, i, idx) {
arm_smmu_write_sme(smmu, idx);
smmu->s2crs[idx].group = group;
}
@@ -1117,14 +1120,14 @@ static int arm_smmu_master_alloc_smes(struct device *dev)
return ret;
}
-static void arm_smmu_master_free_smes(struct iommu_fwspec *fwspec)
+static void arm_smmu_master_free_smes(struct device *dev)
{
- struct arm_smmu_device *smmu = fwspec_smmu(fwspec);
- struct arm_smmu_master_cfg *cfg = fwspec->iommu_priv;
+ struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
+ struct arm_smmu_device *smmu = fwspec_smmu(dev);
int i, idx;
mutex_lock(&smmu->stream_map_mutex);
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(dev, i, idx) {
if (arm_smmu_free_sme(smmu, idx))
arm_smmu_write_sme(smmu, idx);
cfg->smendx[i] = INVALID_SMENDX;
@@ -1133,7 +1136,7 @@ static void arm_smmu_master_free_smes(struct iommu_fwspec *fwspec)
}
static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
- struct iommu_fwspec *fwspec)
+ struct device *dev)
{
struct arm_smmu_device *smmu = smmu_domain->smmu;
struct arm_smmu_s2cr *s2cr = smmu->s2crs;
@@ -1146,7 +1149,7 @@ static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
else
type = S2CR_TYPE_TRANS;
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(dev, i, idx) {
if (type == s2cr[idx].type && cbndx == s2cr[idx].cbndx)
continue;
@@ -1160,10 +1163,10 @@ static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
- int ret;
+ struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu;
- struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ int ret;
if (!fwspec || fwspec->ops != &arm_smmu_ops) {
dev_err(dev, "cannot attach to SMMU, is it on the same bus?\n");
@@ -1177,10 +1180,10 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
* domains, just say no (but more politely than by dereferencing NULL).
* This should be at least a WARN_ON once that's sorted.
*/
- if (!fwspec->iommu_priv)
+ if (!dev_iommu_priv_get(dev))
return -ENODEV;
- smmu = fwspec_smmu(fwspec);
+ smmu = fwspec_smmu(dev);
ret = arm_smmu_rpm_get(smmu);
if (ret < 0)
@@ -1204,7 +1207,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
}
/* Looks ok, so add the device to the domain */
- ret = arm_smmu_domain_add_master(smmu_domain, fwspec);
+ ret = arm_smmu_domain_add_master(smmu_domain, dev);
/*
* Setup an autosuspend delay to avoid bouncing runpm state.
@@ -1429,7 +1432,7 @@ static int arm_smmu_add_device(struct device *dev)
goto out_free;
cfg->smmu = smmu;
- fwspec->iommu_priv = cfg;
+ dev_iommu_priv_set(dev, cfg);
while (i--)
cfg->smendx[i] = INVALID_SMENDX;
@@ -1467,7 +1470,7 @@ static void arm_smmu_remove_device(struct device *dev)
if (!fwspec || fwspec->ops != &arm_smmu_ops)
return;
- cfg = fwspec->iommu_priv;
+ cfg = dev_iommu_priv_get(dev);
smmu = cfg->smmu;
ret = arm_smmu_rpm_get(smmu);
@@ -1475,23 +1478,23 @@ static void arm_smmu_remove_device(struct device *dev)
return;
iommu_device_unlink(&smmu->iommu, dev);
- arm_smmu_master_free_smes(fwspec);
+ arm_smmu_master_free_smes(dev);
arm_smmu_rpm_put(smmu);
+ dev_iommu_priv_set(dev, NULL);
iommu_group_remove_device(dev);
- kfree(fwspec->iommu_priv);
+ kfree(cfg);
iommu_fwspec_free(dev);
}
static struct iommu_group *arm_smmu_device_group(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct arm_smmu_device *smmu = fwspec_smmu(fwspec);
+ struct arm_smmu_device *smmu = fwspec_smmu(dev);
struct iommu_group *group = NULL;
int i, idx;
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(dev, i, idx) {
if (group && smmu->s2crs[idx].group &&
group != smmu->s2crs[idx].group)
return ERR_PTR(-EINVAL);
--
2.17.1
next prev parent reply other threads:[~2020-03-20 9:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-20 9:13 [PATCH v3 00/15] iommu: Move iommu_fwspec out of 'struct device' Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 01/15] iommu: Define dev_iommu_fwspec_get() for !CONFIG_IOMMU_API Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 02/15] ACPI/IORT: Remove direct access of dev->iommu_fwspec Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 03/15] drm/msm/mdp5: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 04/15] iommu/tegra-gart: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 05/15] iommu: Rename struct iommu_param to dev_iommu Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 06/15] iommu: Move iommu_fwspec to struct dev_iommu Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 07/15] iommu/arm-smmu: Fix uninitilized variable warning Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 08/15] iommu: Introduce accessors for iommu private data Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 09/15] iommu/arm-smmu-v3: Use accessor functions " Joerg Roedel
2020-03-20 9:14 ` Joerg Roedel [this message]
2020-03-23 16:02 ` [PATCH v3 10/15] iommu/arm-smmu: " Robin Murphy
2020-03-24 10:08 ` Joerg Roedel
2020-03-25 12:31 ` Robin Murphy
2020-03-26 15:08 ` Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 11/15] iommu/renesas: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 12/15] iommu/mediatek: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 13/15] iommu/qcom: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 14/15] iommu/virtio: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 15/15] iommu: Move fwspec->iommu_priv to struct dev_iommu Joerg Roedel
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