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 | 24 | |
| 5d2efba6 LV |
25 | #include <asm/iommu.h> |
| 26 | ||
| c707ffcf OJ |
27 | /* |
| 28 | * Tces come in two formats, one for the virtual bus and a different | |
| 8d3d589a MM |
29 | * format for PCI. PCI TCEs can have hardware or software maintianed |
| 30 | * coherency. | |
| c707ffcf | 31 | */ |
| 8d3d589a MM |
32 | #define TCE_VB 0 |
| 33 | #define TCE_PCI 1 | |
| c707ffcf | 34 | |
| d0035c62 OJ |
35 | /* TCE page size is 4096 bytes (1 << 12) */ |
| 36 | ||
| 37 | #define TCE_SHIFT 12 | |
| 38 | #define TCE_PAGE_SIZE (1 << TCE_SHIFT) | |
| d0035c62 | 39 | |
| bc97ce95 OJ |
40 | #define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */ |
| 41 | ||
| 42 | #define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */ | |
| 43 | #define TCE_RPN_SHIFT 12 | |
| 44 | #define TCE_VALID 0x800 /* TCE valid */ | |
| 45 | #define TCE_ALLIO 0x400 /* TCE valid for all lpars */ | |
| 46 | #define TCE_PCI_WRITE 0x2 /* write from PCI allowed */ | |
| 47 | #define TCE_PCI_READ 0x1 /* read from PCI allowed */ | |
| 48 | #define TCE_VB_WRITE 0x1 /* write from VB allowed */ | |
| c707ffcf | 49 | |
| 88ced031 | 50 | #endif /* __KERNEL__ */ |
| 8882a4da | 51 | #endif /* _ASM_POWERPC_TCE_H */ |