| /* |
| * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation |
| * Rewrite, cleanup: |
| * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef _ASM_POWERPC_TCE_H |
| #define _ASM_POWERPC_TCE_H |
| #ifdef __KERNEL__ |
| |
| #include <asm/iommu.h> |
| |
| /* |
| * Tces come in two formats, one for the virtual bus and a different |
| * format for PCI. PCI TCEs can have hardware or software maintianed |
| * coherency. |
| */ |
| #define TCE_VB 0 |
| #define TCE_PCI 1 |
| |
| /* TCE page size is 4096 bytes (1 << 12) */ |
| |
| #define TCE_SHIFT 12 |
| #define TCE_PAGE_SIZE (1 << TCE_SHIFT) |
| |
| #define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */ |
| |
| #define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */ |
| #define TCE_RPN_SHIFT 12 |
| #define TCE_VALID 0x800 /* TCE valid */ |
| #define TCE_ALLIO 0x400 /* TCE valid for all lpars */ |
| #define TCE_PCI_WRITE 0x2 /* write from PCI allowed */ |
| #define TCE_PCI_READ 0x1 /* read from PCI allowed */ |
| #define TCE_VB_WRITE 0x1 /* write from VB allowed */ |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _ASM_POWERPC_TCE_H */ |
