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Diffstat (limited to 'bsps/sparc64/include/arch/mm/sun4u/frame.h')
-rw-r--r-- | bsps/sparc64/include/arch/mm/sun4u/frame.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/bsps/sparc64/include/arch/mm/sun4u/frame.h b/bsps/sparc64/include/arch/mm/sun4u/frame.h new file mode 100644 index 0000000000..e30f504d08 --- /dev/null +++ b/bsps/sparc64/include/arch/mm/sun4u/frame.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2005 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 sparc64mm + * @{ + */ +/** @file + */ + +#ifndef KERN_sparc64_SUN4U_FRAME_H_ +#define KERN_sparc64_SUN4U_FRAME_H_ + +/* + * Page size supported by the MMU. + * For 8K there is the nasty illegal virtual aliasing problem. + * Therefore, the kernel uses 8K only internally on the TLB and TSB levels. + */ +#define MMU_FRAME_WIDTH 13 /* 8K */ +#define MMU_FRAME_SIZE (1 << MMU_FRAME_WIDTH) + +/* + * Page size exported to the generic memory management subsystems. + * This page size is not directly supported by the MMU, but we can emulate + * each 16K page with a pair of adjacent 8K pages. + */ +#define FRAME_WIDTH 14 /* 16K */ +#define FRAME_SIZE (1 << FRAME_WIDTH) + +#ifdef KERNEL +#ifndef __ASM__ + +#include <arch/types.h> + +union frame_address { + uintptr_t address; + struct { +#if defined (US) + unsigned : 23; + uint64_t pfn : 28; /**< Physical Frame Number. */ +#elif defined (US3) + unsigned : 21; + uint64_t pfn : 30; /**< Physical Frame Number. */ +#endif + unsigned offset : 13; /**< Offset. */ + } __attribute__ ((packed)); +}; + +typedef union frame_address frame_address_t; + +extern uintptr_t last_frame; +extern uintptr_t end_of_identity; + +extern void frame_arch_init(void); +#define physmem_print() + +#endif +#endif + +#endif + +/** @} + */ |