| 1 | /* |
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| 2 | * This program is free software; you can redistribute it and/or modify |
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| 3 | * it under the terms of the GNU General Public License as published by |
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| 4 | * the Free Software Foundation; either version 2 of the License, or |
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| 5 | * (at your option) any later version. |
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| 6 | * |
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| 7 | * This program is distributed in the hope that it will be useful, |
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| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 10 | * GNU General Public License for more details. |
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| 11 | * |
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| 12 | * You should have received a copy of the GNU General Public License |
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| 13 | * along with this program; if not, write to the Free Software |
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| 14 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 15 | * |
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| 16 | * Copyright (C) IBM Corp. 2005 |
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| 17 | * |
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| 18 | * Authors: Jimi Xenidis <jimix@watson.ibm.com> |
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| 19 | */ |
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| 20 | |
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| 21 | #ifndef _TCE_H |
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| 22 | #define _TCE_H |
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| 23 | |
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| 24 | #include <xen/config.h> |
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| 25 | #include <xen/types.h> |
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| 26 | |
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| 27 | union tce { |
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| 28 | u64 tce_dword; |
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| 29 | struct tce_bits { |
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| 30 | /* the bits here reflect the definition in Linux */ |
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| 31 | /* the RPA considers all 52 bits to be the RPN */ |
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| 32 | u64 tce_cache : 6; |
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| 33 | u64 _tce_r0 : 6; /* reserved */ |
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| 34 | u64 tce_rpn :40; /* Real Page Number */ |
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| 35 | |
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| 36 | /* The RPA considers the next 10 bits reserved */ |
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| 37 | u64 tce_v : 1; /* Valid bit */ |
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| 38 | u64 tce_vlps : 1; /* Valid for LPs */ |
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| 39 | u64 tce_lpx : 8; /* LP index */ |
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| 40 | |
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| 41 | /* the RPA defines the following two bits as: |
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| 42 | * 00: no access |
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| 43 | * 01: System Address read only |
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| 44 | * 10: System Address write only |
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| 45 | * 11: read/write |
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| 46 | */ |
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| 47 | u64 tce_write : 1; |
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| 48 | u64 tce_read : 1; |
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| 49 | } tce_bits; |
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| 50 | }; |
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| 51 | |
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| 52 | union tce_bdesc { |
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| 53 | u64 lbd_dword; |
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| 54 | struct lbd_bits { |
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| 55 | u64 lbd_ctrl_v : 1; |
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| 56 | u64 lbd_ctrl_vtoggle : 1; |
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| 57 | u64 _lbd_ctrl_res0 : 6; |
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| 58 | u64 lbd_len :24; |
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| 59 | u64 lbd_addr :32; |
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| 60 | } lbd_bits; |
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| 61 | }; |
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| 62 | |
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| 63 | struct tce_data { |
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| 64 | ulong t_entries; |
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| 65 | ulong t_base; |
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| 66 | ulong t_alloc_size; |
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| 67 | union tce *t_tce; |
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| 68 | }; |
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| 69 | |
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| 70 | #endif /* _TCE_H */ |
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| 71 | |
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