FreeBSD/Linux Kernel Cross Reference
sys/sparc64/include/tlb.h

     /*-
      * 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: releng/6.4/sys/sparc64/include/tlb.h 178148 2008-04-12 13:41:32Z marius $
     */
    
    #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)
    /* US-III and greater only */
    #define TLB_DEMAP_TYPE_ALL              (2)
    
    #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_ALL                   (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_ALL))
    
    #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)
    
    #define MMU_SFSR_ASI_SHIFT              (16)
    #define MMU_SFSR_FT_SHIFT               (7)
    #define MMU_SFSR_E_SHIFT                (6)
    #define MMU_SFSR_CT_SHIFT               (4)
    #define MMU_SFSR_PR_SHIFT               (3)
    #define MMU_SFSR_W_SHIFT                (2)
    #define MMU_SFSR_OW_SHIFT               (1)
    #define MMU_SFSR_FV_SHIFT               (0)
    
    #define MMU_SFSR_ASI_SIZE               (8)
    #define MMU_SFSR_FT_SIZE                (6)
    #define MMU_SFSR_CT_SIZE                (2)
    
    #define MMU_SFSR_GET_ASI(sfsr) \
            (((sfsr) >> MMU_SFSR_ASI_SHIFT) & ((1UL << MMU_SFSR_ASI_SIZE) - 1))
    #define MMU_SFSR_W                      (1UL << MMU_SFSR_W_SHIFT)
    #define MMU_SFSR_FV                     (1UL << MMU_SFSR_FV_SHIFT)
    
    typedef void tlb_flush_nonlocked_t(void);
   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_nonlocked_t cheetah_tlb_flush_nonlocked;
   tlb_flush_user_t cheetah_tlb_flush_user;
   
   tlb_flush_nonlocked_t spitfire_tlb_flush_nonlocked;
   tlb_flush_user_t spitfire_tlb_flush_user;
   
   extern tlb_flush_nonlocked_t *tlb_flush_nonlocked;
   extern tlb_flush_user_t *tlb_flush_user;
   
   #endif /* !_MACHINE_TLB_H_ */

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