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/*
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 * Copyright (c) 2009 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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#include <arch/mm/page.h>
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#include <arch/mm/tlb.h>
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#include <genarch/mm/page_ht.h>
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#include <mm/frame.h>
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#include <arch/mm/frame.h>
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#include <bitops.h>
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#include <debug.h>
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#include <align.h>
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#include <config.h>
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/** Perform sparc64 specific initialization of paging. */
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void page_arch_init(void)
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{
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    if (config.cpu_active == 1)
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        page_mapping_operations = &ht_mapping_operations;
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}
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/** Map memory-mapped device into virtual memory.
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 *
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 * We are currently using identity mapping for mapping device registers.
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 *
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 * @param physaddr Physical address of the page where the device is
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 *                 located.
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 * @param size     Size of the device's registers.
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 *
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 * @return Virtual address of the page where the device is mapped.
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 *
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 */
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uintptr_t hw_map(uintptr_t physaddr, size_t size)
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{
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    if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
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        panic("Unable to map physical memory %p (%d bytes).", physaddr, size)
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    uintptr_t virtaddr = PA2KA(last_frame);
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    pfn_t i;
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    for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) {
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        uintptr_t addr = PFN2ADDR(i);
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        page_mapping_insert(AS_KERNEL, virtaddr + addr, physaddr + addr, PAGE_NOT_CACHEABLE | PAGE_WRITE);
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    }
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    last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
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    return virtaddr;
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}
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/** @}
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 */