| /* |
| * 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__ |
| |
| /* |
| * Tces come in two formats, one for the virtual bus and a different |
| * format for PCI |
| */ |
| #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_PAGE_FACTOR (PAGE_SHIFT - TCE_SHIFT) |
| |
| |
| /* tce_entry |
| * Used by pSeries (SMP) and iSeries/pSeries LPAR, but there it's |
| * abstracted so layout is irrelevant. |
| */ |
| union tce_entry { |
| unsigned long te_word; |
| struct { |
| unsigned int tb_cacheBits :6; /* Cache hash bits - not used */ |
| unsigned int tb_rsvd :6; |
| unsigned long tb_rpn :40; /* Real page number */ |
| unsigned int tb_valid :1; /* Tce is valid (vb only) */ |
| unsigned int tb_allio :1; /* Tce is valid for all lps (vb only) */ |
| unsigned int tb_lpindex :8; /* LpIndex for user of TCE (vb only) */ |
| unsigned int tb_pciwr :1; /* Write allowed (pci only) */ |
| unsigned int tb_rdwr :1; /* Read allowed (pci), Write allowed (vb) */ |
| } te_bits; |
| #define te_cacheBits te_bits.tb_cacheBits |
| #define te_rpn te_bits.tb_rpn |
| #define te_valid te_bits.tb_valid |
| #define te_allio te_bits.tb_allio |
| #define te_lpindex te_bits.tb_lpindex |
| #define te_pciwr te_bits.tb_pciwr |
| #define te_rdwr te_bits.tb_rdwr |
| }; |
| |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _ASM_POWERPC_TCE_H */ |