Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-02 17:11:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

intel-iommu: trivially inline context entry macros

Browse Source 
Some macros were unused, so I just dropped them:

  context_fault_disable
  context_translation_type
  context_address_root
  context_address_width
  context_domain_id

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Mark McLoughlin 2008-11-21 16:54:46 +00:00 committed by Joerg Roedel
parent 2abd7e167c
commit c07e7d217b
1 changed files with 54 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
drivers/pci/intel-iommu.c
View File

@ -105,28 +105,53 @@ struct context_entry {
u64 lo;
u64 hi;
};
#define context_present(c) ((c).lo & 1)
#define context_fault_disable(c) (((c).lo >> 1) & 1)
#define context_translation_type(c) (((c).lo >> 2) & 3)
#define context_address_root(c) ((c).lo & VTD_PAGE_MASK)
#define context_address_width(c) ((c).hi & 7)
#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
#define context_set_present(c) do {(c).lo |= 1;} while (0)
#define context_set_fault_enable(c) \
do {(c).lo &= (((u64)-1) << 2) | 1;} while (0)
#define context_set_translation_type(c, val) \
do { \
(c).lo &= (((u64)-1) << 4) | 3; \
(c).lo |= ((val) & 3) << 2; \
} while (0)
static inline bool context_present(struct context_entry *context)
{
return (context->lo & 1);
}
static inline void context_set_present(struct context_entry *context)
{
context->lo |= 1;
}
static inline void context_set_fault_enable(struct context_entry *context)
{
context->lo &= (((u64)-1) << 2) | 1;
}
#define CONTEXT_TT_MULTI_LEVEL 0
#define context_set_address_root(c, val) \
do {(c).lo |= (val) & VTD_PAGE_MASK; } while (0)
#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
#define context_set_domain_id(c, val) \
do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
#define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0)
static inline void context_set_translation_type(struct context_entry *context,
unsigned long value)
{
context->lo &= (((u64)-1) << 4) | 3;
context->lo |= (value & 3) << 2;
}
static inline void context_set_address_root(struct context_entry *context,
unsigned long value)
{
context->lo |= value & VTD_PAGE_MASK;
}
static inline void context_set_address_width(struct context_entry *context,
unsigned long value)
{
context->hi |= value & 7;
}
static inline void context_set_domain_id(struct context_entry *context,
unsigned long value)
{
context->hi |= (value & ((1 << 16) - 1)) << 8;
}
static inline void context_clear_entry(struct context_entry *context)
{
context->lo = 0;
context->hi = 0;
}
/*
* 0: readable
@ -349,7 +374,7 @@ static int device_context_mapped(struct intel_iommu *iommu, u8 bus, u8 devfn)
ret = 0;
goto out;
}
ret = context_present(context[devfn]);
ret = context_present(&context[devfn]);
out:
spin_unlock_irqrestore(&iommu->lock, flags);
return ret;
@ -365,7 +390,7 @@ static void clear_context_table(struct intel_iommu *iommu, u8 bus, u8 devfn)
root = &iommu->root_entry[bus];
context = get_context_addr_from_root(root);
if (context) {
context_clear_entry(context[devfn]);
context_clear_entry(&context[devfn]);
__iommu_flush_cache(iommu, &context[devfn], \
sizeof(*context));
}
@ -1284,17 +1309,17 @@ static int domain_context_mapping_one(struct dmar_domain *domain,
if (!context)
return -ENOMEM;
spin_lock_irqsave(&iommu->lock, flags);
if (context_present(*context)) {
if (context_present(context)) {
spin_unlock_irqrestore(&iommu->lock, flags);
return 0;
}
context_set_domain_id(*context, domain->id);
context_set_address_width(*context, domain->agaw);
context_set_address_root(*context, virt_to_phys(domain->pgd));
context_set_translation_type(*context, CONTEXT_TT_MULTI_LEVEL);
context_set_fault_enable(*context);
context_set_present(*context);
context_set_domain_id(context, domain->id);
context_set_address_width(context, domain->agaw);
context_set_address_root(context, virt_to_phys(domain->pgd));
context_set_translation_type(context, CONTEXT_TT_MULTI_LEVEL);
context_set_fault_enable(context);
context_set_present(context);
__iommu_flush_cache(iommu, context, sizeof(*context));
/* it's a non-present to present mapping */