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/*-
* Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Berkeley Software Design Inc's name may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp
* $FreeBSD$
*/
#ifndef _MACHINE_TSB_H_
#define _MACHINE_TSB_H_
#define TSB_KERNEL_MIN_ADDRESS (0xd0000000)
#define TSB_USER_MIN_ADDRESS (0xe0000000)
#define TSB_MASK_WIDTH (6)
#define TSB_PRIMARY_BUCKET_SHIFT (2)
#define TSB_PRIMARY_BUCKET_SIZE (1 << TSB_PRIMARY_BUCKET_SHIFT)
#define TSB_PRIMARY_BUCKET_MASK (TSB_PRIMARY_BUCKET_SIZE - 1)
#define TSB_SECONDARY_BUCKET_SHIFT (3)
#define TSB_SECONDARY_BUCKET_SIZE (1 << TSB_SECONDARY_BUCKET_SHIFT)
#define TSB_SECONDARY_BUCKET_MASK (TSB_SECONDARY_BUCKET_SIZE - 1)
#define TSB_PRIMARY_STTE_SHIFT \
(STTE_SHIFT + TSB_PRIMARY_BUCKET_SHIFT)
#define TSB_PRIMARY_STTE_MASK ((1 << TSB_PRIMARY_STTE_SHIFT) - 1)
#define TSB_LEVEL1_BUCKET_MASK \
((TSB_SECONDARY_BUCKET_MASK & ~TSB_PRIMARY_BUCKET_MASK) << \
(PAGE_SHIFT - TSB_PRIMARY_BUCKET_SHIFT))
#define TSB_LEVEL1_BUCKET_SHIFT \
(TSB_BUCKET_SPREAD_SHIFT + \
(TSB_SECONDARY_BUCKET_SHIFT - TSB_PRIMARY_BUCKET_SHIFT))
#define TSB_BUCKET_SPREAD_SHIFT (2)
#define TSB_DEPTH (7)
#define TSB_KERNEL_PAGES (1)
#define TSB_KERNEL_SIZE (TSB_KERNEL_PAGES * PAGE_SIZE_4M)
#define TSB_KERNEL_MB (512)
#define TSB_KERNEL_VM_RANGE (TSB_KERNEL_MB * (1 << 20))
#define TSB_KERNEL_RANGE \
((TSB_KERNEL_VM_RANGE / PAGE_SIZE) * sizeof (struct stte))
#define TSB_KERNEL_MASK \
((TSB_KERNEL_RANGE / sizeof (struct stte)) - 1)
#define TSB_1M_STTE_SHIFT (21)
#define TSB_1M_STTE_SIZE (1 << TSB_1M_SHIFT)
#define TSB_SIZE_REG (7)
extern vm_offset_t tsb_kernel_phys;
static __inline struct stte *
tsb_base(u_int level)
{
vm_offset_t base;
size_t len;
if (level == 0)
base = TSB_USER_MIN_ADDRESS;
else {
len = 1UL << ((level * TSB_BUCKET_SPREAD_SHIFT) +
TSB_MASK_WIDTH + TSB_SECONDARY_BUCKET_SHIFT +
STTE_SHIFT);
base = TSB_USER_MIN_ADDRESS + len;
}
return (struct stte *)base;
}
static __inline u_long
tsb_bucket_shift(u_int level)
{
return (level == 0 ?
TSB_PRIMARY_BUCKET_SHIFT : TSB_SECONDARY_BUCKET_SHIFT);
}
static __inline u_long
tsb_bucket_size(u_int level)
{
return (1UL << tsb_bucket_shift(level));
}
static __inline u_long
tsb_bucket_mask(u_int level)
{
return (tsb_bucket_size(level) - 1);
}
static __inline u_long
tsb_mask_width(u_int level)
{
return ((level * TSB_BUCKET_SPREAD_SHIFT) + TSB_MASK_WIDTH);
}
static __inline u_long
tsb_mask(u_int level)
{
return ((1UL << tsb_mask_width(level)) - 1);
}
static __inline u_int
tsb_tlb_slot(u_int level)
{
return (level == 0 ?
TLB_SLOT_TSB_USER_PRIMARY : TLB_SLOT_TSB_USER_SECONDARY);
}
static __inline vm_offset_t
tsb_stte_vtophys(pmap_t pm, struct stte *stp)
{
vm_offset_t va;
u_long data;
va = (vm_offset_t)stp;
if (pm == kernel_pmap)
return (tsb_kernel_phys + (va - TSB_KERNEL_MIN_ADDRESS));
if (trunc_page(va) == TSB_USER_MIN_ADDRESS)
data = pm->pm_stte.st_tte.tte_data;
else
data = ldxa(TLB_DAR_SLOT(tsb_tlb_slot(1)),
ASI_DTLB_DATA_ACCESS_REG);
return ((vm_offset_t)((TD_PA(data)) + (va & PAGE_MASK)));
}
static __inline struct stte *
tsb_vpntobucket(vm_offset_t vpn, u_int level)
{
return (tsb_base(level) +
((vpn & tsb_mask(level)) << tsb_bucket_shift(level)));
}
static __inline struct stte *
tsb_vtobucket(vm_offset_t va, u_int level)
{
return (tsb_vpntobucket(va >> PAGE_SHIFT, level));
}
static __inline struct stte *
tsb_kvpntostte(vm_offset_t vpn)
{
struct stte *stp;
stp = (struct stte *)(TSB_KERNEL_MIN_ADDRESS +
((vpn & TSB_KERNEL_MASK) << STTE_SHIFT));
return (stp);
}
static __inline struct stte *
tsb_kvtostte(vm_offset_t va)
{
return (tsb_kvpntostte(va >> PAGE_SHIFT));
}
struct stte *tsb_get_bucket(pmap_t pm, u_int level, vm_offset_t va,
int allocate);
int tsb_miss(pmap_t pm, u_int type, struct mmuframe *mf);
struct tte tsb_page_alloc(pmap_t pm, vm_offset_t va);
void tsb_page_fault(pmap_t pm, int level, vm_offset_t va, struct stte *stp);
void tsb_page_init(void *va, int level);
struct stte *tsb_stte_lookup(pmap_t pm, vm_offset_t va);
struct stte *tsb_stte_promote(pmap_t pm, vm_offset_t va, struct stte *stp);
void tsb_stte_remove(struct stte *stp);
struct stte *tsb_tte_enter(pmap_t pm, vm_offset_t va, struct tte tte);
void tsb_tte_local_remove(struct tte *tp);
extern vm_offset_t tsb_bootstrap_pages[];
extern int tsb_bootstrap_index;
#endif /* !_MACHINE_TSB_H_ */
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