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Diffstat (limited to 'arch/powerpc/include/asm/tce.h')
| -rw-r--r-- | arch/powerpc/include/asm/tce.h | 30 |
1 files changed, 30 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..0c34d2756 --- /dev/null +++ b/arch/powerpc/include/asm/tce.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation + * Rewrite, cleanup: + * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation + */ + +#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_ENTRY_SIZE 8 /* each TCE is 64 bits */ +#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 */ |