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418 jermar 1 
/*
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 * Copyright (c) 2005 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup sparc64mm  
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_sparc64_PAGE_H_
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#define KERN_sparc64_PAGE_H_
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#include <arch/mm/frame.h>
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/*
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 * On the TLB and TSB level, we still use 8K pages, which are supported by the
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 * MMU.
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 */
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#define MMU_PAGE_WIDTH  MMU_FRAME_WIDTH
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#define MMU_PAGE_SIZE   MMU_FRAME_SIZE
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/*
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 * On the page table level, we use 16K pages. 16K pages are not supported by
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 * the MMU but we emulate them with pairs of 8K pages.
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 */
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#define PAGE_WIDTH  FRAME_WIDTH
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#define PAGE_SIZE   FRAME_SIZE
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#define MMU_PAGES_PER_PAGE  (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
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/*
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 * With 16K pages, there is only one page color.
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 */
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#define PAGE_COLOR_BITS 0   /**< 14 - 14; 2^14 == 16K == alias boundary. */
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#ifdef KERNEL
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#ifndef __ASM__
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#include <arch/interrupt.h>
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extern uintptr_t physmem_base;
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#define KA2PA(x)    (((uintptr_t) (x)) + physmem_base)
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#define PA2KA(x)    (((uintptr_t) (x)) - physmem_base)
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typedef union {
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    uintptr_t address;
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    struct {
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        uint64_t vpn : 51;      /**< Virtual Page Number. */
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        unsigned offset : 13;       /**< Offset. */
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    } __attribute__ ((packed));
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} page_address_t;
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extern void page_arch_init(void);
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#endif /* !def __ASM__ */
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#endif /* KERNEL */
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#endif
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/** @}
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 */