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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
| commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
| tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/powerpc/include/asm/tce.h | |
Initial import
Diffstat (limited to 'arch/powerpc/include/asm/tce.h')
| -rw-r--r-- | arch/powerpc/include/asm/tce.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/tce.h b/arch/powerpc/include/asm/tce.h new file mode 100644 index 000000000..743f36b38 --- /dev/null +++ b/arch/powerpc/include/asm/tce.h @@ -0,0 +1,54 @@ +/* + * 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 +#define TCE_PCI_SWINV_CREATE 2 +#define TCE_PCI_SWINV_FREE 4 +#define TCE_PCI_SWINV_PAIR 8 + +/* 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 */ |