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76acc2c1a7
Switch to using the Power ISA defined PTE format when we have a 64-bit PTE. This makes the code handling between fsl-booke and book3e-64 similiar for TLB faults. Additionally this lets use take advantage of the page size encodings and full permissions that the HW PTE defines. Also defined _PMD_PRESENT, _PMD_PRESENT_MASK, and _PMD_BAD since the 32-bit ppc arch code expects them. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
#ifndef _ASM_POWERPC_PTE_FSL_BOOKE_H
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#define _ASM_POWERPC_PTE_FSL_BOOKE_H
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#ifdef __KERNEL__
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/* PTE bit definitions for Freescale BookE SW loaded TLB MMU based
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* processors
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*
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MMU Assist Register 3:
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32 33 34 35 36 ... 50 51 52 53 54 55 56 57 58 59 60 61 62 63
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RPN...................... 0 0 U0 U1 U2 U3 UX SX UW SW UR SR
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- PRESENT *must* be in the bottom three bits because swap cache
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entries use the top 29 bits.
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- FILE *must* be in the bottom three bits because swap cache
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entries use the top 29 bits.
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*/
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/* Definitions for FSL Book-E Cores */
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#define _PAGE_PRESENT 0x00001 /* S: PTE contains a translation */
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#define _PAGE_USER 0x00002 /* S: User page (maps to UR) */
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#define _PAGE_FILE 0x00002 /* S: when !present: nonlinear file mapping */
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#define _PAGE_RW 0x00004 /* S: Write permission (SW) */
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#define _PAGE_DIRTY 0x00008 /* S: Page dirty */
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#define _PAGE_EXEC 0x00010 /* H: SX permission */
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#define _PAGE_ACCESSED 0x00020 /* S: Page referenced */
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#define _PAGE_ENDIAN 0x00040 /* H: E bit */
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#define _PAGE_GUARDED 0x00080 /* H: G bit */
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#define _PAGE_COHERENT 0x00100 /* H: M bit */
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#define _PAGE_NO_CACHE 0x00200 /* H: I bit */
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#define _PAGE_WRITETHRU 0x00400 /* H: W bit */
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#define _PAGE_SPECIAL 0x00800 /* S: Special page */
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#define _PMD_PRESENT 0
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#define _PMD_PRESENT_MASK (PAGE_MASK)
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#define _PMD_BAD (~PAGE_MASK)
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_PTE_FSL_BOOKE_H */
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