Differential D21301 Diff 61028 head/sys/powerpc/booke/pmap.c

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head/sys/powerpc/booke/pmap.c

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uint32_t tlb1_entries;		uint32_t tlb1_entries;

#define TLB0_ENTRIES (tlb0_entries)		#define TLB0_ENTRIES (tlb0_entries)
#define TLB0_WAYS (tlb0_ways)		#define TLB0_WAYS (tlb0_ways)
#define TLB0_ENTRIES_PER_WAY (tlb0_entries_per_way)		#define TLB0_ENTRIES_PER_WAY (tlb0_entries_per_way)

#define TLB1_ENTRIES (tlb1_entries)		#define TLB1_ENTRIES (tlb1_entries)

static vm_offset_t tlb1_map_base = VM_MAXUSER_ADDRESS + PAGE_SIZE;		static vm_offset_t tlb1_map_base = (vm_offset_t)VM_MAXUSER_ADDRESS + PAGE_SIZE;

static tlbtid_t tid_alloc(struct pmap *);		static tlbtid_t tid_alloc(struct pmap *);
static void tid_flush(tlbtid_t tid);		static void tid_flush(tlbtid_t tid);

#ifdef DDB		#ifdef DDB
#ifdef __powerpc64__		#ifdef __powerpc64__
static void tlb_print_entry(int, uint32_t, uint64_t, uint32_t, uint32_t);		static void tlb_print_entry(int, uint32_t, uint64_t, uint32_t, uint32_t);
#else		#else
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/* Read TLB0 size and associativity. */		/* Read TLB0 size and associativity. */
tlb0_get_tlbconf();		tlb0_get_tlbconf();

/*		/*
* Align kernel start and end address (kernel image).		* Align kernel start and end address (kernel image).
* Note that kernel end does not necessarily relate to kernsize.		* Note that kernel end does not necessarily relate to kernsize.
* kernsize is the size of the kernel that is actually mapped.		* kernsize is the size of the kernel that is actually mapped.
*/		*/
kernstart = trunc_page(start);
data_start = round_page(kernelend);		data_start = round_page(kernelend);
data_end = data_start;		data_end = data_start;

/* Allocate the dynamic per-cpu area. */		/* Allocate the dynamic per-cpu area. */
dpcpu = (void *)data_end;		dpcpu = (void *)data_end;
data_end += DPCPU_SIZE;		data_end += DPCPU_SIZE;

/* Allocate space for the message buffer. */		/* Allocate space for the message buffer. */
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* The returned pointer is valid until the next time this function is		* The returned pointer is valid until the next time this function is
* called in this thread. This is used internally in copyin/copyout.		* called in this thread. This is used internally in copyin/copyout.
*/		*/
int		int
mmu_booke_map_user_ptr(mmu_t mmu, pmap_t pm, volatile const void *uaddr,		mmu_booke_map_user_ptr(mmu_t mmu, pmap_t pm, volatile const void *uaddr,
void *kaddr, size_t ulen, size_t klen)		void *kaddr, size_t ulen, size_t klen)
{		{

if ((uintptr_t)uaddr + ulen > VM_MAXUSER_ADDRESS + PAGE_SIZE)		if (trunc_page((uintptr_t)uaddr + ulen) > VM_MAXUSER_ADDRESS)
return (EFAULT);		return (EFAULT);

kaddr = (void )(uintptr_t)uaddr;		kaddr = (void )(uintptr_t)uaddr;
if (klen)		if (klen)
*klen = ulen;		*klen = ulen;

return (0);		return (0);
}		}

/*		/*
* Figure out where a given kernel pointer (usually in a fault) points		* Figure out where a given kernel pointer (usually in a fault) points
* to from the VM's perspective, potentially remapping into userland's		* to from the VM's perspective, potentially remapping into userland's
* address space.		* address space.
*/		*/
static int		static int
mmu_booke_decode_kernel_ptr(mmu_t mmu, vm_offset_t addr, int *is_user,		mmu_booke_decode_kernel_ptr(mmu_t mmu, vm_offset_t addr, int *is_user,
vm_offset_t *decoded_addr)		vm_offset_t *decoded_addr)
{		{

if (addr < VM_MAXUSER_ADDRESS)		if (trunc_page(addr) <= VM_MAXUSER_ADDRESS)
*is_user = 1;		*is_user = 1;
else		else
*is_user = 0;		*is_user = 0;

*decoded_addr = addr;		*decoded_addr = addr;
return (0);		return (0);
}		}

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/*		/*
* TLB1 initialization routine, to be called after the very first		* TLB1 initialization routine, to be called after the very first
* assembler level setup done in locore.S.		* assembler level setup done in locore.S.
*/		*/
void		void
tlb1_init()		tlb1_init()
{		{
uint32_t mas0, mas1, mas2, mas3, mas7;		vm_offset_t mas2;
		uint32_t mas0, mas1, mas3, mas7;
uint32_t tsz;		uint32_t tsz;

tlb1_get_tlbconf();		tlb1_get_tlbconf();

mas0 = MAS0_TLBSEL(1) \| MAS0_ESEL(0);		mas0 = MAS0_TLBSEL(1) \| MAS0_ESEL(0);
mtspr(SPR_MAS0, mas0);		mtspr(SPR_MAS0, mas0);
__asm __volatile("isync; tlbre");		__asm __volatile("isync; tlbre");

mas1 = mfspr(SPR_MAS1);		mas1 = mfspr(SPR_MAS1);
mas2 = mfspr(SPR_MAS2);		mas2 = mfspr(SPR_MAS2);
mas3 = mfspr(SPR_MAS3);		mas3 = mfspr(SPR_MAS3);
mas7 = mfspr(SPR_MAS7);		mas7 = mfspr(SPR_MAS7);

kernload = ((vm_paddr_t)(mas7 & MAS7_RPN) << 32) \|		kernload = ((vm_paddr_t)(mas7 & MAS7_RPN) << 32) \|
(mas3 & MAS3_RPN);		(mas3 & MAS3_RPN);

tsz = (mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;		tsz = (mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
kernsize += (tsz > 0) ? tsize2size(tsz) : 0;		kernsize += (tsz > 0) ? tsize2size(tsz) : 0;
		kernstart = trunc_page(mas2);

/* Setup TLB miss defaults */		/* Setup TLB miss defaults */
set_mas4_defaults();		set_mas4_defaults();
}		}

/*		/*
* pmap_early_io_unmap() should be used in short conjunction with		* pmap_early_io_unmap() should be used in short conjunction with
* pmap_early_io_map(), as in the following snippet:		* pmap_early_io_map(), as in the following snippet:
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