diff options
Diffstat (limited to 'i386/i386/vm_param.h')
| -rw-r--r-- | i386/i386/vm_param.h | 61 |
1 files changed, 54 insertions, 7 deletions
diff --git a/i386/i386/vm_param.h b/i386/i386/vm_param.h index ffd91d6..16f9119 100644 --- a/i386/i386/vm_param.h +++ b/i386/i386/vm_param.h @@ -25,6 +25,7 @@ /* XXX use xu/vm_param.h */ #include <mach/vm_param.h> +#include <kern/macros.h> #ifdef MACH_PV_PAGETABLES #include <xen/public/xen.h> #endif @@ -54,19 +55,65 @@ #define VM_MAX_KERNEL_ADDRESS (LINEAR_MAX_KERNEL_ADDRESS - LINEAR_MIN_KERNEL_ADDRESS + VM_MIN_KERNEL_ADDRESS) #endif /* MACH_PV_PAGETABLES */ -/* Reserve mapping room for kmem. */ -#ifdef MACH_XEN -#define VM_KERNEL_MAP_SIZE (224 * 1024 * 1024) -#else -#define VM_KERNEL_MAP_SIZE (192 * 1024 * 1024) -#endif - /* The kernel virtual address space is actually located at high linear addresses. This is the kernel address range in linear addresses. */ #define LINEAR_MIN_KERNEL_ADDRESS (VM_MAX_ADDRESS) #define LINEAR_MAX_KERNEL_ADDRESS (0xffffffffUL) +/* + * Direct physical mapping boundaries. + */ +#ifdef __LP64__ +#define VM_MIN_DIRECTMAP_ADDRESS VM_MIN_KERNEL_ADDRESS +#define VM_MAX_DIRECTMAP_ADDRESS DECL_CONST(0xffffc00000000000, UL) +#else /* __LP64__ */ +#define VM_MIN_DIRECTMAP_ADDRESS VM_MAX_ADDRESS +#define VM_MAX_DIRECTMAP_ADDRESS DECL_CONST(0xf8000000, UL) +#endif /* __LP64__ */ + +/* Reserve mapping room for virtual kernel memory, mainly used for IPC + and temporary mappings. */ +#define VM_KERNEL_MAP_SIZE (128 * 1024 * 1024) + +/* + * Physical memory properties. + */ + +#define VM_PAGE_DMA_LIMIT DECL_CONST(0x1000000, UL) + +#ifdef __LP64__ +#define VM_PAGE_MAX_SEGS 4 +#define VM_PAGE_DMA32_LIMIT DECL_CONST(0x100000000, UL) +#define VM_PAGE_DIRECTMAP_LIMIT DECL_CONST(0x400000000000, UL) +#define VM_PAGE_HIGHMEM_LIMIT DECL_CONST(0x10000000000000, UL) +#else /* __LP64__ */ +#define VM_PAGE_DIRECTMAP_LIMIT DECL_CONST(0x38000000, ULL) +#ifdef X86_PAE +#define VM_PAGE_MAX_SEGS 3 +#define VM_PAGE_HIGHMEM_LIMIT DECL_CONST(0x10000000000000, ULL) +#else /* X86_PAE */ +#define VM_PAGE_MAX_SEGS 3 +#define VM_PAGE_HIGHMEM_LIMIT DECL_CONST(0xfffff000, UL) +#endif /* X86_PAE */ +#endif /* __LP64__ */ + +/* + * Physical segment indexes. + */ +#define VM_PAGE_SEG_DMA 0 + +#ifdef __LP64__ +#define VM_PAGE_SEG_DMA32 1 +#define VM_PAGE_SEG_DIRECTMAP 2 +#define VM_PAGE_SEG_HIGHMEM 3 +#else /* __LP64__ */ +#define VM_PAGE_SEG_DMA32 1 /* Alias for the DIRECTMAP segment */ +#define VM_PAGE_SEG_DIRECTMAP 1 +#define VM_PAGE_SEG_HIGHMEM 2 +#endif /* __LP64__ */ + + #ifdef MACH_PV_PAGETABLES /* need room for mmu updates (2*8bytes) */ #define KERNEL_STACK_SIZE (4*I386_PGBYTES) |