| 1 | /*************************************************************************** |
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| 2 | * |
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| 3 | * Copyright (C) 2001 International Business Machines |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * This file is part of the GPFS mmfslinux kernel module. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * |
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| 12 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 13 | * this list of conditions and the following disclaimer. |
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 15 | * notice, this list of conditions and the following disclaimer in the |
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| 16 | * documentation and/or other materials provided with the distribution. |
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| 17 | * 3. The name of the author may not be used to endorse or promote products |
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| 18 | * derived from this software without specific prior written |
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| 19 | * permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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| 27 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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| 28 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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| 29 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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| 30 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 31 | * |
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| 32 | *************************************************************************** */ |
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| 33 | /* @(#)87 1.26 src/avs/fs/mmfs/ts/kernext/gpl-linux/arch-gpl.h, mmfs, avs_rgpfs24, rgpfs240610b 5/10/05 16:55:12 */ |
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| 34 | #ifndef _h_arch_gpl |
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| 35 | #define _h_arch_gpl |
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| 36 | |
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| 37 | #define LEVEL_1 // uncomment to get privilege level 1 where the storage is |
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| 38 | // NOT accessible by all users ??? |
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| 39 | |
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| 40 | #if defined(GPFS_ARCH_IA64) || defined(GPFS_ARCH_PPC64) \ |
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| 41 | || defined(GPFS_ARCH_X86_64) |
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| 42 | #define PGD_OFFSET(mm, page) pgd_offset_k(page) |
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| 43 | #else |
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| 44 | #define PGD_OFFSET(mm, page) pgd_offset(mm, page) |
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| 45 | #endif |
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| 46 | |
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| 47 | #ifdef GPFS_ARCH_IA64 |
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| 48 | /* In the kernel's mapped region we have a full 43 bit space available and |
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| 49 | completely ignore the region number (since we know its in region number 5).*/ |
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| 50 | #ifdef LEVEL_1 |
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| 51 | #define PRIVILEGE_FLAGS _PAGE_PL_1 // privilege level 1 |
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| 52 | #else |
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| 53 | #define PRIVILEGE_FLAGS _PAGE_PL_3 // privilege level 3(user) |
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| 54 | #endif |
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| 55 | #else //GPFS_ARCH_I386 |
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| 56 | #define PRIVILEGE_FLAGS _PAGE_USER |
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| 57 | #endif |
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| 58 | |
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| 59 | int kxSaveThreadInfo(int pid, void* reg); |
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| 60 | #ifdef GPFS_ARCH_IA64 |
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| 61 | int set_privilege_level(unsigned long progLevel); |
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| 62 | int get_privilege_level(); |
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| 63 | #else |
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| 64 | #define set_privilege_level(_a) 0 |
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| 65 | #define get_privilege_level(_a) 0 |
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| 66 | #endif |
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| 67 | |
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| 68 | #if LINUX_KERNEL_VERSION >= 2050000 |
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| 69 | #include <asm/tlbflush.h> |
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| 70 | #endif |
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| 71 | |
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| 72 | /* General macros for flushing tlb entries */ |
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| 73 | #if defined(GPFS_ARCH_POWER) || defined(GPFS_ARCH_PPC64) \ |
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| 74 | || defined(GPFS_ARCH_X86_64) |
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| 75 | #define FLUSH_TLB_PAGE(V,A) NOOP //??? |
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| 76 | #define FLUSH_TLB_RANGE(M,S,E) NOOP //??? |
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| 77 | #endif |
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| 78 | #ifdef GPFS_ARCH_I386 |
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| 79 | #define FLUSH_TLB_PAGE(V,A) flush_tlb_page(V,A) |
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| 80 | /* Temporary workaround for running i386 Linux distros on EM64T or x86-64 |
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| 81 | architecture; we need to flush the tlb on all cpus in this case |
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| 82 | in a rather convoluted manner (vfree) after changing the protection bits. |
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| 83 | This will go away with the use of pointer swizzling on ia32 |
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| 84 | in the near future. */ |
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| 85 | #define FLUSH_TLB_RANGE(M,S,E) \ |
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| 86 | { void *_tptr; \ |
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| 87 | _tptr = vmalloc(PAGE_SIZE); \ |
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| 88 | vfree(_tptr); \ |
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| 89 | } |
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| 90 | #define FLUSH_TLB_ALL() |
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| 91 | #endif /* GPFS_ARCH_I386 */ |
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| 92 | |
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| 93 | #if defined(GPFS_ARCH_IA64) |
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| 94 | #define FLUSH_TLB_PAGE(V,A) flush_tlb_page(V,A) |
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| 95 | #if LINUX_KERNEL_VERSION >= 2060500 |
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| 96 | /* flush_tlb_range now uses vma struct instead of mm struct. */ |
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| 97 | #define FLUSH_TLB_RANGE(M,S,E) \ |
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| 98 | { struct vm_area_struct vma; \ |
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| 99 | vma.vm_mm = M; \ |
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| 100 | flush_tlb_range(&vma,S,E); \ |
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| 101 | } |
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| 102 | #else |
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| 103 | #define FLUSH_TLB_RANGE(M,S,E) flush_tlb_range(M,S,E) |
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| 104 | #endif /* LINUX_KERNEL_VERSION >= 2060500 */ |
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| 105 | #define FLUSH_TLB_ALL() flush_tlb_all() |
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| 106 | #endif /* GPFS_ARCH_IA64 */ |
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| 107 | |
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| 108 | #endif /* _h_arch_gpl */ |
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