| 1 | /*
|
|---|
| 2 | * Copyright (c) 2005 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup sparc64mm
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifndef KERN_sparc64_SUN4U_FRAME_H_
|
|---|
| 36 | #define KERN_sparc64_SUN4U_FRAME_H_
|
|---|
| 37 |
|
|---|
| 38 | /*
|
|---|
| 39 | * Page size supported by the MMU.
|
|---|
| 40 | * For 8K there is the nasty illegal virtual aliasing problem.
|
|---|
| 41 | * Therefore, the kernel uses 8K only internally on the TLB and TSB levels.
|
|---|
| 42 | */
|
|---|
| 43 | #define MMU_FRAME_WIDTH 13 /* 8K */
|
|---|
| 44 | #define MMU_FRAME_SIZE (1 << MMU_FRAME_WIDTH)
|
|---|
| 45 |
|
|---|
| 46 | /*
|
|---|
| 47 | * Page size exported to the generic memory management subsystems.
|
|---|
| 48 | * This page size is not directly supported by the MMU, but we can emulate
|
|---|
| 49 | * each 16K page with a pair of adjacent 8K pages.
|
|---|
| 50 | */
|
|---|
| 51 | #define FRAME_WIDTH 14 /* 16K */
|
|---|
| 52 | #define FRAME_SIZE (1 << FRAME_WIDTH)
|
|---|
| 53 |
|
|---|
| 54 | #ifndef __ASM__
|
|---|
| 55 |
|
|---|
| 56 | #include <typedefs.h>
|
|---|
| 57 |
|
|---|
| 58 | union frame_address {
|
|---|
| 59 | uintptr_t address;
|
|---|
| 60 | struct {
|
|---|
| 61 | #if defined (US)
|
|---|
| 62 | unsigned : 23;
|
|---|
| 63 | uint64_t pfn : 28; /**< Physical Frame Number. */
|
|---|
| 64 | #elif defined (US3)
|
|---|
| 65 | unsigned : 21;
|
|---|
| 66 | uint64_t pfn : 30; /**< Physical Frame Number. */
|
|---|
| 67 | #endif
|
|---|
| 68 | unsigned offset : 13; /**< Offset. */
|
|---|
| 69 | } __attribute__ ((packed));
|
|---|
| 70 | };
|
|---|
| 71 |
|
|---|
| 72 | typedef union frame_address frame_address_t;
|
|---|
| 73 |
|
|---|
| 74 | extern uintptr_t last_frame;
|
|---|
| 75 | extern uintptr_t end_of_identity;
|
|---|
| 76 |
|
|---|
| 77 | extern void frame_arch_init(void);
|
|---|
| 78 | #define physmem_print()
|
|---|
| 79 |
|
|---|
| 80 | #endif
|
|---|
| 81 |
|
|---|
| 82 | #endif
|
|---|
| 83 |
|
|---|
| 84 | /** @}
|
|---|
| 85 | */
|
|---|
