/*
* Copyright (c) 2001-2004 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/** @addtogroup kernel_generic_mm
* @{
*/
/** @file
*/
#ifndef KERN_TLB_H_
#define KERN_TLB_H_
#include <arch/asm.h>
#include <arch/mm/asid.h>
#include <typedefs.h>
/**
* Number of TLB shootdown messages that can be queued in processor tlb_messages
* queue.
*/
#define TLB_MESSAGE_QUEUE_LEN 10
/** Type of TLB shootdown message. */
typedef enum {
/** Invalid type. */
TLB_INVL_INVALID = 0,
/** Invalidate all entries in TLB. */
TLB_INVL_ALL,
/** Invalidate all entries belonging to one address space. */
TLB_INVL_ASID,
/** Invalidate specified page range belonging to one address space. */
TLB_INVL_PAGES
} tlb_invalidate_type_t;
/** TLB shootdown message. */
typedef struct {
tlb_invalidate_type_t type; /**< Message type. */
asid_t asid; /**< Address space identifier. */
uintptr_t page; /**< Page address. */
size_t count; /**< Number of pages to invalidate. */
} tlb_shootdown_msg_t;
extern void tlb_init(void);
#ifdef CONFIG_SMP
extern ipl_t tlb_shootdown_start(tlb_invalidate_type_t, asid_t, uintptr_t,
size_t);
extern void tlb_shootdown_finalize(ipl_t);
extern void tlb_shootdown_ipi_recv(void);
#else
#define tlb_shootdown_start(w, x, y, z) interrupts_disable()
#define tlb_shootdown_finalize(i) (interrupts_restore(i));
#define tlb_shootdown_ipi_recv()
#endif /* CONFIG_SMP */
/* Export TLB interface that each architecture must implement. */
extern void tlb_arch_init(void);
extern void tlb_print(void);
extern void tlb_shootdown_ipi_send(void);
extern void tlb_invalidate_all(void);
extern void tlb_invalidate_asid(asid_t);
extern void tlb_invalidate_pages(asid_t, uintptr_t, size_t);
#endif
/** @}
*/