projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 17ed9e31 AK |
2 | #ifndef _ASM_POWERPC_NOHASH_PTE_BOOK3E_H |
| 3 | #define _ASM_POWERPC_NOHASH_PTE_BOOK3E_H | |
| 57e2a99f BH |
4 | #ifdef __KERNEL__ |
| 5 | ||
| 6 | /* PTE bit definitions for processors compliant to the Book3E | |
| 7 | * architecture 2.06 or later. The position of the PTE bits | |
| 8 | * matches the HW definition of the optional Embedded Page Table | |
| 9 | * category. | |
| 10 | */ | |
| 11 | ||
| 12 | /* Architected bits */ | |
| 13 | #define _PAGE_PRESENT 0x000001 /* software: pte contains a translation */ | |
| 57e2a99f | 14 | #define _PAGE_SW1 0x000002 |
| e1483158 | 15 | #define _PAGE_BIT_SWAP_TYPE 2 |
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16 | #define _PAGE_BAP_SR 0x000004 |
| 17 | #define _PAGE_BAP_UR 0x000008 | |
| 18 | #define _PAGE_BAP_SW 0x000010 | |
| 19 | #define _PAGE_BAP_UW 0x000020 | |
| 20 | #define _PAGE_BAP_SX 0x000040 | |
| 21 | #define _PAGE_BAP_UX 0x000080 | |
| 22 | #define _PAGE_PSIZE_MSK 0x000f00 | |
| 23 | #define _PAGE_PSIZE_4K 0x000200 | |
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24 | #define _PAGE_PSIZE_8K 0x000300 |
| 25 | #define _PAGE_PSIZE_16K 0x000400 | |
| 26 | #define _PAGE_PSIZE_32K 0x000500 | |
| 57e2a99f | 27 | #define _PAGE_PSIZE_64K 0x000600 |
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28 | #define _PAGE_PSIZE_128K 0x000700 |
| 29 | #define _PAGE_PSIZE_256K 0x000800 | |
| 30 | #define _PAGE_PSIZE_512K 0x000900 | |
| 57e2a99f | 31 | #define _PAGE_PSIZE_1M 0x000a00 |
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32 | #define _PAGE_PSIZE_2M 0x000b00 |
| 33 | #define _PAGE_PSIZE_4M 0x000c00 | |
| 34 | #define _PAGE_PSIZE_8M 0x000d00 | |
| 57e2a99f | 35 | #define _PAGE_PSIZE_16M 0x000e00 |
| 1d5d9527 | 36 | #define _PAGE_PSIZE_32M 0x000f00 |
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37 | #define _PAGE_DIRTY 0x001000 /* C: page changed */ |
| 38 | #define _PAGE_SW0 0x002000 | |
| 39 | #define _PAGE_U3 0x004000 | |
| 40 | #define _PAGE_U2 0x008000 | |
| 41 | #define _PAGE_U1 0x010000 | |
| 42 | #define _PAGE_U0 0x020000 | |
| 43 | #define _PAGE_ACCESSED 0x040000 | |
| c199efa2 | 44 | #define _PAGE_ENDIAN 0x080000 |
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45 | #define _PAGE_GUARDED 0x100000 |
| 46 | #define _PAGE_COHERENT 0x200000 /* M: enforce memory coherence */ | |
| 47 | #define _PAGE_NO_CACHE 0x400000 /* I: cache inhibit */ | |
| 48 | #define _PAGE_WRITETHRU 0x800000 /* W: cache write-through */ | |
| 49 | ||
| 50 | /* "Higher level" linux bit combinations */ | |
| ea3cc330 BH |
51 | #define _PAGE_EXEC _PAGE_BAP_UX /* .. and was cache cleaned */ |
| 52 | #define _PAGE_RW (_PAGE_BAP_SW | _PAGE_BAP_UW) /* User write permission */ | |
| 53 | #define _PAGE_KERNEL_RW (_PAGE_BAP_SW | _PAGE_BAP_SR | _PAGE_DIRTY) | |
| 54 | #define _PAGE_KERNEL_RO (_PAGE_BAP_SR) | |
| 55 | #define _PAGE_KERNEL_RWX (_PAGE_BAP_SW | _PAGE_BAP_SR | _PAGE_DIRTY | _PAGE_BAP_SX) | |
| 56 | #define _PAGE_KERNEL_ROX (_PAGE_BAP_SR | _PAGE_BAP_SX) | |
| 57 | #define _PAGE_USER (_PAGE_BAP_UR | _PAGE_BAP_SR) /* Can be read */ | |
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58 | |
| 59 | #define _PAGE_HASHPTE 0 | |
| 60 | #define _PAGE_BUSY 0 | |
| 61 | ||
| 62 | #define _PAGE_SPECIAL _PAGE_SW0 | |
| 63 | ||
| 64 | /* Flags to be preserved on PTE modifications */ | |
| 65 | #define _PAGE_HPTEFLAGS _PAGE_BUSY | |
| 66 | ||
| 67 | /* Base page size */ | |
| 68 | #ifdef CONFIG_PPC_64K_PAGES | |
| 69 | #define _PAGE_PSIZE _PAGE_PSIZE_64K | |
| 70 | #define PTE_RPN_SHIFT (28) | |
| 71 | #else | |
| 72 | #define _PAGE_PSIZE _PAGE_PSIZE_4K | |
| 73 | #define PTE_RPN_SHIFT (24) | |
| 74 | #endif | |
| 75 | ||
| 41151e77 BB |
76 | #define PTE_WIMGE_SHIFT (19) |
| 77 | #define PTE_BAP_SHIFT (2) | |
| 78 | ||
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79 | /* On 32-bit, we never clear the top part of the PTE */ |
| 80 | #ifdef CONFIG_PPC32 | |
| 81 | #define _PTE_NONE_MASK 0xffffffff00000000ULL | |
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82 | #define _PMD_PRESENT 0 |
| 83 | #define _PMD_PRESENT_MASK (PAGE_MASK) | |
| 84 | #define _PMD_BAD (~PAGE_MASK) | |
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85 | #endif |
| 86 | ||
| 87 | #endif /* __KERNEL__ */ | |
| 17ed9e31 | 88 | #endif /* _ASM_POWERPC_NOHASH_PTE_BOOK3E_H */ |