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iommu: Remove SVA related callbacks from iommu ops

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These ops'es have been deprecated. There's no need for them anymore.
Remove them to avoid dead code.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Tested-by: Tony Zhu <tony.zhu@intel.com>
Link: https://lore.kernel.org/r/20221031005917.45690-11-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2022-10-31 08:59:14 +08:00 committed by Joerg Roedel
parent be51b1d6bb
commit 1c263576f4
7 changed files with 0 additions and 121 deletions
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40
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
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@ -344,11 +344,6 @@ __arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm)
if (!bond)
return ERR_PTR(-ENOMEM);
/* Allocate a PASID for this mm if necessary */
ret = iommu_sva_alloc_pasid(mm, 1, (1U << master->ssid_bits) - 1);
if (ret)
goto err_free_bond;
bond->mm = mm;
bond->sva.dev = dev;
refcount_set(&bond->refs, 1);
@ -367,41 +362,6 @@ err_free_bond:
return ERR_PTR(ret);
}
struct iommu_sva *arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm)
{
struct iommu_sva *handle;
struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
if (smmu_domain->stage != ARM_SMMU_DOMAIN_S1)
return ERR_PTR(-EINVAL);
mutex_lock(&sva_lock);
handle = __arm_smmu_sva_bind(dev, mm);
mutex_unlock(&sva_lock);
return handle;
}
void arm_smmu_sva_unbind(struct iommu_sva *handle)
{
struct arm_smmu_bond *bond = sva_to_bond(handle);
mutex_lock(&sva_lock);
if (refcount_dec_and_test(&bond->refs)) {
list_del(&bond->list);
arm_smmu_mmu_notifier_put(bond->smmu_mn);
kfree(bond);
}
mutex_unlock(&sva_lock);
}
u32 arm_smmu_sva_get_pasid(struct iommu_sva *handle)
{
struct arm_smmu_bond *bond = sva_to_bond(handle);
return bond->mm->pasid;
}
bool arm_smmu_sva_supported(struct arm_smmu_device *smmu)
{
unsigned long reg, fld;

3
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
View File

@ -2863,9 +2863,6 @@ static struct iommu_ops arm_smmu_ops = {
.remove_dev_pasid = arm_smmu_remove_dev_pasid,
.dev_enable_feat = arm_smmu_dev_enable_feature,
.dev_disable_feat = arm_smmu_dev_disable_feature,
.sva_bind = arm_smmu_sva_bind,
.sva_unbind = arm_smmu_sva_unbind,
.sva_get_pasid = arm_smmu_sva_get_pasid,
.page_response = arm_smmu_page_response,
.def_domain_type = arm_smmu_def_domain_type,
.pgsize_bitmap = -1UL, /* Restricted during device attach */

16
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
View File

@ -754,9 +754,6 @@ bool arm_smmu_master_sva_enabled(struct arm_smmu_master *master);
int arm_smmu_master_enable_sva(struct arm_smmu_master *master);
int arm_smmu_master_disable_sva(struct arm_smmu_master *master);
bool arm_smmu_master_iopf_supported(struct arm_smmu_master *master);
struct iommu_sva *arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm);
void arm_smmu_sva_unbind(struct iommu_sva *handle);
u32 arm_smmu_sva_get_pasid(struct iommu_sva *handle);
void arm_smmu_sva_notifier_synchronize(void);
struct iommu_domain *arm_smmu_sva_domain_alloc(void);
void arm_smmu_sva_remove_dev_pasid(struct iommu_domain *domain,
@ -792,19 +789,6 @@ static inline bool arm_smmu_master_iopf_supported(struct arm_smmu_master *master
return false;
}
static inline struct iommu_sva *
arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm)
{
return ERR_PTR(-ENODEV);
}
static inline void arm_smmu_sva_unbind(struct iommu_sva *handle) {}
static inline u32 arm_smmu_sva_get_pasid(struct iommu_sva *handle)
{
return IOMMU_PASID_INVALID;
}
static inline void arm_smmu_sva_notifier_synchronize(void) {}
static inline struct iommu_domain *arm_smmu_sva_domain_alloc(void)

3
drivers/iommu/intel/iommu.c
View File

@ -4751,9 +4751,6 @@ const struct iommu_ops intel_iommu_ops = {
.remove_dev_pasid = intel_iommu_remove_dev_pasid,
.pgsize_bitmap = SZ_4K,
#ifdef CONFIG_INTEL_IOMMU_SVM
.sva_bind = intel_svm_bind,
.sva_unbind = intel_svm_unbind,
.sva_get_pasid = intel_svm_get_pasid,
.page_response = intel_svm_page_response,
#endif
.default_domain_ops = &(const struct iommu_domain_ops) {

3
drivers/iommu/intel/iommu.h
View File

@ -748,9 +748,6 @@ struct intel_iommu *device_to_iommu(struct device *dev, u8 *bus, u8 *devfn);
extern void intel_svm_check(struct intel_iommu *iommu);
extern int intel_svm_enable_prq(struct intel_iommu *iommu);
extern int intel_svm_finish_prq(struct intel_iommu *iommu);
struct iommu_sva *intel_svm_bind(struct device *dev, struct mm_struct *mm);
void intel_svm_unbind(struct iommu_sva *handle);
u32 intel_svm_get_pasid(struct iommu_sva *handle);
int intel_svm_page_response(struct device *dev, struct iommu_fault_event *evt,
struct iommu_page_response *msg);
struct iommu_domain *intel_svm_domain_alloc(void);

49
drivers/iommu/intel/svm.c
View File

@ -296,14 +296,6 @@ out:
return 0;
}
static int intel_svm_alloc_pasid(struct device *dev, struct mm_struct *mm)
{
ioasid_t max_pasid = dev_is_pci(dev) ?
pci_max_pasids(to_pci_dev(dev)) : intel_pasid_max_id;
return iommu_sva_alloc_pasid(mm, PASID_MIN, max_pasid - 1);
}
static struct iommu_sva *intel_svm_bind_mm(struct intel_iommu *iommu,
struct device *dev,
struct mm_struct *mm)
@ -771,47 +763,6 @@ prq_advance:
return IRQ_RETVAL(handled);
}
struct iommu_sva *intel_svm_bind(struct device *dev, struct mm_struct *mm)
{
struct intel_iommu *iommu = device_to_iommu(dev, NULL, NULL);
struct iommu_sva *sva;
int ret;
mutex_lock(&pasid_mutex);
ret = intel_svm_alloc_pasid(dev, mm);
if (ret) {
mutex_unlock(&pasid_mutex);
return ERR_PTR(ret);
}
sva = intel_svm_bind_mm(iommu, dev, mm);
mutex_unlock(&pasid_mutex);
return sva;
}
void intel_svm_unbind(struct iommu_sva *sva)
{
struct intel_svm_dev *sdev = to_intel_svm_dev(sva);
mutex_lock(&pasid_mutex);
intel_svm_unbind_mm(sdev->dev, sdev->pasid);
mutex_unlock(&pasid_mutex);
}
u32 intel_svm_get_pasid(struct iommu_sva *sva)
{
struct intel_svm_dev *sdev;
u32 pasid;
mutex_lock(&pasid_mutex);
sdev = to_intel_svm_dev(sva);
pasid = sdev->pasid;
mutex_unlock(&pasid_mutex);
return pasid;
}
int intel_svm_page_response(struct device *dev,
struct iommu_fault_event *evt,
struct iommu_page_response *msg)

7
include/linux/iommu.h
View File

@ -227,9 +227,6 @@ struct iommu_iotlb_gather {
* driver init to device driver init (default no)
* @dev_enable/disable_feat: per device entries to enable/disable
* iommu specific features.
* @sva_bind: Bind process address space to device
* @sva_unbind: Unbind process address space from device
* @sva_get_pasid: Get PASID associated to a SVA handle
* @page_response: handle page request response
* @def_domain_type: device default domain type, return value:
* - IOMMU_DOMAIN_IDENTITY: must use an identity domain
@ -263,10 +260,6 @@ struct iommu_ops {
int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f);
int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f);
struct iommu_sva *(*sva_bind)(struct device *dev, struct mm_struct *mm);
void (*sva_unbind)(struct iommu_sva *handle);
u32 (*sva_get_pasid)(struct iommu_sva *handle);
int (*page_response)(struct device *dev,
struct iommu_fault_event *evt,
struct iommu_page_response *msg);