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- /*
- * 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 */
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