freebsd-dev/sys/sun4v/include/tlb.h
2006-10-05 06:14:28 +00:00

96 lines
3.4 KiB
C

/*-
* Copyright (c) 2001 Jake Burkholder.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_TLB_H_
#define _MACHINE_TLB_H_
#define TLB_DIRECT_ADDRESS_BITS (43)
#define TLB_DIRECT_PAGE_BITS (PAGE_SHIFT_4M)
#define TLB_DIRECT_ADDRESS_MASK ((1UL << TLB_DIRECT_ADDRESS_BITS) - 1)
#define TLB_DIRECT_PAGE_MASK ((1UL << TLB_DIRECT_PAGE_BITS) - 1)
#define TLB_PHYS_TO_DIRECT(pa) \
((pa) | VM_MIN_DIRECT_ADDRESS)
#define TLB_DIRECT_TO_PHYS(va) \
((va) & TLB_DIRECT_ADDRESS_MASK)
#define TLB_DIRECT_TO_TTE_MASK \
(TD_V | TD_4M | (TLB_DIRECT_ADDRESS_MASK - TLB_DIRECT_PAGE_MASK))
#define TLB_DAR_SLOT_SHIFT (3)
#define TLB_DAR_SLOT(slot) ((slot) << TLB_DAR_SLOT_SHIFT)
#define TAR_VPN_SHIFT (13)
#define TAR_CTX_MASK ((1 << TAR_VPN_SHIFT) - 1)
#define TLB_TAR_VA(va) ((va) & ~TAR_CTX_MASK)
#define TLB_TAR_CTX(ctx) ((ctx) & TAR_CTX_MASK)
#define TLB_DEMAP_ID_SHIFT (4)
#define TLB_DEMAP_ID_PRIMARY (0)
#define TLB_DEMAP_ID_SECONDARY (1)
#define TLB_DEMAP_ID_NUCLEUS (2)
#define TLB_DEMAP_TYPE_SHIFT (6)
#define TLB_DEMAP_TYPE_PAGE (0)
#define TLB_DEMAP_TYPE_CONTEXT (1)
#define TLB_DEMAP_VA(va) ((va) & ~PAGE_MASK)
#define TLB_DEMAP_ID(id) ((id) << TLB_DEMAP_ID_SHIFT)
#define TLB_DEMAP_TYPE(type) ((type) << TLB_DEMAP_TYPE_SHIFT)
#define TLB_DEMAP_PAGE (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_PAGE))
#define TLB_DEMAP_CONTEXT (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_CONTEXT))
#define TLB_DEMAP_PRIMARY (TLB_DEMAP_ID(TLB_DEMAP_ID_PRIMARY))
#define TLB_DEMAP_SECONDARY (TLB_DEMAP_ID(TLB_DEMAP_ID_SECONDARY))
#define TLB_DEMAP_NUCLEUS (TLB_DEMAP_ID(TLB_DEMAP_ID_NUCLEUS))
#define TLB_CTX_KERNEL (0)
#define TLB_CTX_USER_MIN (1)
#define TLB_CTX_USER_MAX (8192)
typedef void tlb_flush_user_t(void);
struct pmap;
struct tlb_entry;
extern int kernel_tlb_slots;
extern struct tlb_entry *kernel_tlbs;
void tlb_context_demap(struct pmap *pm);
void tlb_page_demap(struct pmap *pm, vm_offset_t va);
void tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end);
tlb_flush_user_t cheetah_tlb_flush_user;
tlb_flush_user_t spitfire_tlb_flush_user;
extern tlb_flush_user_t *tlb_flush_user;
#endif /* !_MACHINE_TLB_H_ */