diff options
Diffstat (limited to 'arch/powerpc/include/asm/iommu.h')
| -rw-r--r-- | arch/powerpc/include/asm/iommu.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index 957a83f4364..cbfe678e3db 100644 --- a/arch/powerpc/include/asm/iommu.h +++ b/arch/powerpc/include/asm/iommu.h @@ -53,6 +53,16 @@ static __inline__ __attribute_const__ int get_iommu_order(unsigned long size) */ #define IOMAP_MAX_ORDER 13 +#define IOMMU_POOL_HASHBITS 2 +#define IOMMU_NR_POOLS (1 << IOMMU_POOL_HASHBITS) + +struct iommu_pool { + unsigned long start; + unsigned long end; + unsigned long hint; + spinlock_t lock; +} ____cacheline_aligned_in_smp; + struct iommu_table { unsigned long it_busno; /* Bus number this table belongs to */ unsigned long it_size; /* Size of iommu table in entries */ @@ -61,10 +71,10 @@ struct iommu_table { unsigned long it_index; /* which iommu table this is */ unsigned long it_type; /* type: PCI or Virtual Bus */ unsigned long it_blocksize; /* Entries in each block (cacheline) */ - unsigned long it_hint; /* Hint for next alloc */ - unsigned long it_largehint; /* Hint for large allocs */ - unsigned long it_halfpoint; /* Breaking point for small/large allocs */ - spinlock_t it_lock; /* Protects it_map */ + unsigned long poolsize; + unsigned long nr_pools; + struct iommu_pool large_pool; + struct iommu_pool pools[IOMMU_NR_POOLS]; unsigned long *it_map; /* A simple allocation bitmap for now */ }; |