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iommu/vt-d: Cleanup after delegating DMA domain to generic iommu 

[No functional changes]

1. Starting with commit df4f3c603a ("iommu/vt-d: Remove static identity
map code") there are no callers for iommu_prepare_rmrr_dev() but the
implementation of the function still exists, so remove it. Also, as a
ripple effect remove get_domain_for_dev() and iommu_prepare_identity_map()
because they aren't being used either.

2. Remove extra new line in couple of places.

Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Sai Praneeth Prakhya 2019-06-12 08:28:50 +08:00 committed by Joerg Roedel
parent d5692d4af0
commit 16c9e29e12
1 changed files with 0 additions and 55 deletions
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55
drivers/iommu/intel-iommu.c
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@ -929,7 +929,6 @@ static struct dma_pte *pfn_to_dma_pte(struct dmar_domain *domain,
return pte;
}
/* return address's pte at specific level */
static struct dma_pte *dma_pfn_level_pte(struct dmar_domain *domain,
unsigned long pfn,
@ -1598,7 +1597,6 @@ static void iommu_disable_translation(struct intel_iommu *iommu)
raw_spin_unlock_irqrestore(&iommu->register_lock, flag);
}
static int iommu_init_domains(struct intel_iommu *iommu)
{
u32 ndomains, nlongs;
@ -1636,8 +1634,6 @@ static int iommu_init_domains(struct intel_iommu *iommu)
return -ENOMEM;
}
/*
* If Caching mode is set, then invalid translations are tagged
* with domain-id 0, hence we need to pre-allocate it. We also
@ -2664,29 +2660,6 @@ static struct dmar_domain *set_domain_for_dev(struct device *dev,
return domain;
}
static struct dmar_domain *get_domain_for_dev(struct device *dev, int gaw)
{
struct dmar_domain *domain, *tmp;
domain = find_domain(dev);
if (domain)
goto out;
domain = find_or_alloc_domain(dev, gaw);
if (!domain)
goto out;
tmp = set_domain_for_dev(dev, domain);
if (!tmp || domain != tmp) {
domain_exit(domain);
domain = tmp;
}
out:
return domain;
}
static int iommu_domain_identity_map(struct dmar_domain *domain,
unsigned long long start,
unsigned long long end)
@ -2751,33 +2724,6 @@ static int domain_prepare_identity_map(struct device *dev,
return iommu_domain_identity_map(domain, start, end);
}
static int iommu_prepare_identity_map(struct device *dev,
unsigned long long start,
unsigned long long end)
{
struct dmar_domain *domain;
int ret;
domain = get_domain_for_dev(dev, DEFAULT_DOMAIN_ADDRESS_WIDTH);
if (!domain)
return -ENOMEM;
ret = domain_prepare_identity_map(dev, domain, start, end);
if (ret)
domain_exit(domain);
return ret;
}
static inline int iommu_prepare_rmrr_dev(struct dmar_rmrr_unit *rmrr,
struct device *dev)
{
if (dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO)
return 0;
return iommu_prepare_identity_map(dev, rmrr->base_address,
rmrr->end_address);
}
static int md_domain_init(struct dmar_domain *domain, int guest_width);
static int __init si_domain_init(int hw)
@ -4094,7 +4040,6 @@ static void __init init_iommu_pm_ops(void)
static inline void init_iommu_pm_ops(void) {}
#endif /* CONFIG_PM */
int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header, void *arg)
{
struct acpi_dmar_reserved_memory *rmrr;