| Thomas Gleixner | 1a59d1b8 | 2019-05-27 08:55:05 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation |
| 4 | * Rewrite, cleanup: |
| Olof Johansson | 91f1448 | 2005-11-21 02:12:32 -0600 | [diff] [blame] | 5 | * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 6 | */ |
| 7 | |
| David Gibson | 8882a4d | 2005-11-09 13:38:01 +1100 | [diff] [blame] | 8 | #ifndef _ASM_POWERPC_TCE_H |
| 9 | #define _ASM_POWERPC_TCE_H |
| Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 10 | #ifdef __KERNEL__ |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 11 | |
| Linas Vepstas | 5d2efba | 2006-10-30 16:15:59 +1100 | [diff] [blame] | 12 | #include <asm/iommu.h> |
| 13 | |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 14 | /* |
| 15 | * Tces come in two formats, one for the virtual bus and a different |
| Milton Miller | 8d3d589 | 2011-06-29 20:58:33 +0000 | [diff] [blame] | 16 | * format for PCI. PCI TCEs can have hardware or software maintianed |
| 17 | * coherency. |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 18 | */ |
| Milton Miller | 8d3d589 | 2011-06-29 20:58:33 +0000 | [diff] [blame] | 19 | #define TCE_VB 0 |
| 20 | #define TCE_PCI 1 |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 21 | |
| Olof Johansson | d0035c62 | 2005-09-20 13:46:44 +1000 | [diff] [blame] | 22 | /* TCE page size is 4096 bytes (1 << 12) */ |
| 23 | |
| 24 | #define TCE_SHIFT 12 |
| 25 | #define TCE_PAGE_SIZE (1 << TCE_SHIFT) |
| Olof Johansson | d0035c62 | 2005-09-20 13:46:44 +1000 | [diff] [blame] | 26 | |
| Olof Johansson | bc97ce9 | 2006-04-28 22:51:59 -0500 | [diff] [blame] | 27 | #define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */ |
| Olof Johansson | d0035c62 | 2005-09-20 13:46:44 +1000 | [diff] [blame] | 28 | |
| Olof Johansson | bc97ce9 | 2006-04-28 22:51:59 -0500 | [diff] [blame] | 29 | #define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */ |
| 30 | #define TCE_RPN_SHIFT 12 |
| 31 | #define TCE_VALID 0x800 /* TCE valid */ |
| 32 | #define TCE_ALLIO 0x400 /* TCE valid for all lpars */ |
| 33 | #define TCE_PCI_WRITE 0x2 /* write from PCI allowed */ |
| 34 | #define TCE_PCI_READ 0x1 /* read from PCI allowed */ |
| 35 | #define TCE_VB_WRITE 0x1 /* write from VB allowed */ |
| Olof Johansson | c707ffc | 2005-09-20 13:45:41 +1000 | [diff] [blame] | 36 | |
| Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 37 | #endif /* __KERNEL__ */ |
| David Gibson | 8882a4d | 2005-11-09 13:38:01 +1100 | [diff] [blame] | 38 | #endif /* _ASM_POWERPC_TCE_H */ |