FreeBSD/Linux Kernel Cross Reference
sys/sun4v/include/tsb.h

     /*-
      * Copyright (c) 2006 Kip Macy
      * 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_TSB_H_
    #define _MACHINE_TSB_H_
    
    #define MAX_TSB_INFO                     2
    
    /*
     * Values for "tsb_ttesz_mask" bitmask.
     */
    #define TSB8K   (1 << TTE8K)
    #define TSB64K  (1 << TTE64K)
    #define TSB512K (1 << TTE512K)
    #define TSB4M   (1 << TTE4M)
    #define TSB32M  (1 << TTE32M)
    #define TSB256M (1 << TTE256M)
    
    /*
     * Kernel TSBs
     */
    #define TSB8K_INDEX           0
    #define TSB4M_INDEX           1
    
    extern hv_tsb_info_t kernel_td[MAX_TSB_INFO];
    
    struct hv_tsb_info;
    
    
    void tsb_init(struct hv_tsb_info *tsb, uint64_t *scratchval, uint64_t page_shift);
    
    void tsb_deinit(struct hv_tsb_info *tsb);
    
    void tsb_assert_invalid(struct hv_tsb_info *tsb, vm_offset_t va);
    
    void tsb_set_tte(struct hv_tsb_info *tsb, vm_offset_t va, tte_t tte_data, uint64_t ctx);
    
    void tsb_set_tte_real(struct hv_tsb_info *tsb, vm_offset_t index_va, 
                          vm_offset_t tag_va, tte_t tte_data, uint64_t ctx);
    
    tte_t tsb_get_tte(struct hv_tsb_info *tsb, vm_offset_t va);
    
    tte_t tsb_lookup_tte(vm_offset_t va, uint64_t context);
    
    void tsb_clear(struct hv_tsb_info *tsb);
    
    void tsb_clear_tte(struct hv_tsb_info *tsb, vm_offset_t va);
    
    void tsb_clear_range(struct hv_tsb_info *tsb, vm_offset_t sva, vm_offset_t eva);
    
    uint64_t tsb_set_scratchpad_kernel(struct hv_tsb_info *tsb);
    
    uint64_t tsb_set_scratchpad_user(struct hv_tsb_info *tsb);
    
    int tsb_size(struct hv_tsb_info *tsb);
    
    int tsb_page_shift(pmap_t pmap);
    
    #endif /* !_MACHINE_TSB_H_ */

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