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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef __ZULU_HAT_INCL__
#define __ZULU_HAT_INCL__
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#define ZULU_TTE8K 0
#define ZULU_TTE64K 1
#define ZULU_TTE512K 2
#define ZULU_TTE4M 3
#define ZULUM_MAX_PG_SIZES 4
#define ZULU_CTX_MASK 0x1fff
#ifndef _ASM
#include <sys/types.h>
#include <sys/atomic.h>
#include <vm/xhat.h>
#include <sys/avl.h>
#define ZULU_HAT_BP_SHIFT 13
#define ZULU_HAT_SZ_SHIFT(sz) ((sz) * 3)
#define ZULU_HAT_NUM_PGS(sz) (1<<ZULU_HAT_SZ_SHIFT(sz))
#define ZULU_HAT_PGSHIFT(s) (ZULU_HAT_BP_SHIFT + \
ZULU_HAT_SZ_SHIFT(s))
#define ZULU_HAT_PGSZ(s) ((uint64_t)1<<ZULU_HAT_PGSHIFT(s))
#define ZULU_HAT_PGOFFSET(s) (ZULU_HAT_PGSZ(s) - 1)
#define ZULU_HAT_PGMASK(s) (~ZULU_HAT_PGOFFSET((uint64_t)s))
#define ZULU_HAT_PGADDR(a, s) ((uintptr_t)(a) & ZULU_HAT_PGMASK(s))
#define ZULU_HAT_PGADDROFF(a, s) ((uintptr_t)(a) & ZULU_HAT_PGOFFSET(s))
#define ZULU_HAT_PGDIFF(a, s) (ZULU_HAT_PGSZ(s) - \
ZULU_HAT_PGADDROFF(a, s))
#define ZULU_HAT_PFN_MASK(sz) ((1 << ZULU_HAT_SZ_SHIFT(sz)) - 1)
#define ZULU_HAT_ADJ_PFN(ttep, vaddr) \
((ttep->zulu_tte_pfn & ~ZULU_HAT_PFN_MASK(ttep->zulu_tte_size)) | \
(((uintptr_t)vaddr >> ZULU_HAT_BP_SHIFT) & \
ZULU_HAT_PFN_MASK(ttep->zulu_tte_size)))
/*
* zulu_ctx_tab is an array of pointers to zulu hat structures.
* since the addresses are 8 byte aligned we use bit 0 as a lock flag.
* This will synchronize TL1 access to the tsb and the mappings.
*/
#define ZULU_CTX_LOCK 0x1
#define ZULU_CTX_LOCK_INIT(c) zulu_ctx_tab[c] = NULL
#define ZULU_CTX_IS_FREE(c) (zulu_ctx_tab[c] == NULL)
#define ZULU_CTX_SET_HAT(c, h) zulu_ctx_tab[c] = h
#define ZULU_CTX_GET_HAT(c) (struct zulu_hat *)((uint64_t) \
zulu_ctx_tab[c] & ~ZULU_CTX_LOCK)
struct zulu_tag {
uint64_t zulu_tag_page:51; /* [63:13] vpage */
};
struct zulu_tte {
union {
struct zulu_tag zulu_tte_tag;
uint64_t zulu_tte_addr;
} un;
uint_t zulu_tte_valid :1;
uint_t zulu_tte_perm :1;
uint_t zulu_tte_size :3;
uint_t zulu_tte_locked :1;
uint_t zulu_tte_pfn;
};
/*
* zulu hat stores its list of translation in a hash table.
* TODO: size this table. 256 buckets may be too small.
*/
#define ZULU_HASH_TBL_NUM 0x100
#define ZULU_HASH_TBL_MASK (ZULU_HASH_TBL_NUM - 1)
#define ZULU_HASH_TBL_SHIFT(_s) (ZULU_HAT_BP_SHIFT + (3 * _s))
#define ZULU_HASH_TBL_SZ (ZULU_HASH_TBL_NUM * sizeof (struct zulu_hat_blk *))
#define ZULU_MAP_HASH_VAL(_v, _s) (((_v) >> ZULU_HASH_TBL_SHIFT(_s)) & \
ZULU_HASH_TBL_MASK)
#define ZULU_MAP_HASH_HEAD(_zh, _v, _s) \
(_zh->hash_tbl[ZULU_MAP_HASH_VAL(_v, _s)])
/*
*
* TODO: need finalize the number of entries in the TSB
* 32K tsb entries caused us to never get a tsb miss that didn't cause
* a page fault.
*
* Reducing TSB_NUM to 512 entries caused tsb_miss > tsb_hit
* in a yoyo run.
*/
#define ZULU_TSB_NUM 4096
#define ZULU_TSB_SZ (ZULU_TSB_NUM * sizeof (struct zulu_tte))
#define ZULU_TSB_HASH(a, ts, s) (((uintptr_t)(a) >> ZULU_HAT_PGSHIFT(ts)) & \
(s-1))
#define ZULU_VADDR(tag) (tag & ~ZULU_CTX_MASK)
#define ZULU_TTE_TO_PAGE(a) a.un.zulu_tte_tag.zulu_tag_page
struct zulu_hat_blk {
struct zulu_hat_blk *zulu_hash_next;
struct zulu_hat_blk *zulu_hash_prev;
struct zulu_shadow_blk *zulu_shadow_blk;
struct zulu_tte zulu_hat_blk_tte;
};
#define zulu_hat_blk_vaddr zulu_hat_blk_tte.un.zulu_tte_addr
#define zulu_hat_blk_pfn zulu_hat_blk_tte.zulu_tte_pfn
#define zulu_hat_blk_page ZULU_TTE_TO_PAGE(zulu_hat_blk_tte)
#define zulu_hat_blk_perm zulu_hat_blk_tte.zulu_tte_perm
#define zulu_hat_blk_size zulu_hat_blk_tte.zulu_tte_size
#define zulu_hat_blk_valid zulu_hat_blk_tte.zulu_tte_valid
/*
* for fast lookups by address, len we use an avl list to shadow occupied
* 4Mb regions that have mappings.
*/
#define ZULU_SHADOW_BLK_RANGE 0x400000
#define ZULU_SHADOW_BLK_MASK (~(ZULU_SHADOW_BLK_RANGE - 1))
struct zulu_shadow_blk {
avl_node_t link; /* must be at beginning of struct */
uint64_t ivaddr; /* base address of this node */
uint64_t ref_count;
uint64_t min_addr;
uint64_t max_addr;
};
#define ZULU_SHADOW_BLK_LINK_OFFSET (0)
struct zulu_hat {
struct xhat zulu_xhat;
kmutex_t lock;
avl_tree_t shadow_tree;
char magic; /* =42 to mark our data for mdb */
unsigned in_fault : 1;
unsigned freed : 1;
unsigned map8k : 1;
unsigned map64k : 1;
unsigned map512k : 1;
unsigned map4m : 1;
short zulu_ctx;
unsigned short zulu_tsb_size; /* TODO why not a constant? */
struct zulu_hat_blk **hash_tbl;
struct zulu_tte *zulu_tsb;
struct zulu_shadow_blk *sblk_last; /* last sblk looked up */
uint64_t fault_ivaddr_last; /* last translation loaded */
caddr_t vaddr_max;
hrtime_t last_used;
void *zdev;
};
#define ZULU_HAT2AS(h) ((h)->zulu_xhat.xhat_as)
/*
* Assembly language function for TSB lookups
*/
uint64_t zulu_hat_tsb_lookup_tl0(struct zulu_hat *zhat, caddr_t vaddr);
/*
* zuluvm's interface to zulu_hat
*/
int zulu_hat_load(struct zulu_hat *zhat, caddr_t vaddr, enum seg_rw rw, int *);
int zulu_hat_init();
int zulu_hat_destroy();
int zulu_hat_attach(void *arg);
int zulu_hat_detach(void *arg);
struct zulu_hat *zulu_hat_proc_attach(struct as *as, void *zdev);
void zulu_hat_proc_detach(struct zulu_hat *zhat);
void zulu_hat_validate_ctx(struct zulu_hat *zhat);
void zulu_hat_terminate(struct zulu_hat *zhat);
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* __ZULU_HAT_INCL__ */
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