projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c707ffcf OJ |
1 | /* |
| 2 | * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation | |
| 3 | * Rewrite, cleanup: | |
| 91f14480 | 4 | * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation |
| c707ffcf OJ |
5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License, or | |
| 9 | * (at your option) any later version. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 19 | */ | |
| 20 | ||
| 8882a4da DG |
21 | #ifndef _ASM_POWERPC_TCE_H |
| 22 | #define _ASM_POWERPC_TCE_H | |
| 88ced031 | 23 | #ifdef __KERNEL__ |
| c707ffcf OJ |
24 | |
| 25 | /* | |
| 26 | * Tces come in two formats, one for the virtual bus and a different | |
| 27 | * format for PCI | |
| 28 | */ | |
| 29 | #define TCE_VB 0 | |
| 30 | #define TCE_PCI 1 | |
| 31 | ||
| d0035c62 OJ |
32 | /* TCE page size is 4096 bytes (1 << 12) */ |
| 33 | ||
| 34 | #define TCE_SHIFT 12 | |
| 35 | #define TCE_PAGE_SIZE (1 << TCE_SHIFT) | |
| 36 | #define TCE_PAGE_FACTOR (PAGE_SHIFT - TCE_SHIFT) | |
| 37 | ||
| 38 | ||
| c707ffcf OJ |
39 | /* tce_entry |
| 40 | * Used by pSeries (SMP) and iSeries/pSeries LPAR, but there it's | |
| 41 | * abstracted so layout is irrelevant. | |
| 42 | */ | |
| 43 | union tce_entry { | |
| 44 | unsigned long te_word; | |
| 45 | struct { | |
| 46 | unsigned int tb_cacheBits :6; /* Cache hash bits - not used */ | |
| 47 | unsigned int tb_rsvd :6; | |
| 48 | unsigned long tb_rpn :40; /* Real page number */ | |
| 49 | unsigned int tb_valid :1; /* Tce is valid (vb only) */ | |
| 50 | unsigned int tb_allio :1; /* Tce is valid for all lps (vb only) */ | |
| 51 | unsigned int tb_lpindex :8; /* LpIndex for user of TCE (vb only) */ | |
| 52 | unsigned int tb_pciwr :1; /* Write allowed (pci only) */ | |
| 53 | unsigned int tb_rdwr :1; /* Read allowed (pci), Write allowed (vb) */ | |
| 54 | } te_bits; | |
| 55 | #define te_cacheBits te_bits.tb_cacheBits | |
| 56 | #define te_rpn te_bits.tb_rpn | |
| 57 | #define te_valid te_bits.tb_valid | |
| 58 | #define te_allio te_bits.tb_allio | |
| 59 | #define te_lpindex te_bits.tb_lpindex | |
| 60 | #define te_pciwr te_bits.tb_pciwr | |
| 61 | #define te_rdwr te_bits.tb_rdwr | |
| 62 | }; | |
| 63 | ||
| 64 | ||
| 88ced031 | 65 | #endif /* __KERNEL__ */ |
| 8882a4da | 66 | #endif /* _ASM_POWERPC_TCE_H */ |