eeepc-laptop: Register as a pci-hotplug device
[linux-2.6/linux-acpi-2.6.git] / arch / powerpc / include / asm / tce.h
blobf663634cccc9c89b8d87164d98387cc61e97773a
1 /*
2 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
3 * Rewrite, cleanup:
4 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
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.
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.
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
21 #ifndef _ASM_POWERPC_TCE_H
22 #define _ASM_POWERPC_TCE_H
23 #ifdef __KERNEL__
25 #include <asm/iommu.h>
28 * Tces come in two formats, one for the virtual bus and a different
29 * format for PCI
31 #define TCE_VB 0
32 #define TCE_PCI 1
34 /* TCE page size is 4096 bytes (1 << 12) */
36 #define TCE_SHIFT 12
37 #define TCE_PAGE_SIZE (1 << TCE_SHIFT)
39 #define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */
41 #define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */
42 #define TCE_RPN_SHIFT 12
43 #define TCE_VALID 0x800 /* TCE valid */
44 #define TCE_ALLIO 0x400 /* TCE valid for all lpars */
45 #define TCE_PCI_WRITE 0x2 /* write from PCI allowed */
46 #define TCE_PCI_READ 0x1 /* read from PCI allowed */
47 #define TCE_VB_WRITE 0x1 /* write from VB allowed */
49 #endif /* __KERNEL__ */
50 #endif /* _ASM_POWERPC_TCE_H */