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powerpc: Untangle fixmap.h and pgtable.h and mmu.h

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fixmap.h need pgtable.h for [un]map_kernel_page()

pgtable.h need fixmap.h for FIXADDR_TOP.

Untangle the two files by moving FIXADDR_TOP into pgtable.h

Also move VIRT_IMMR_BASE to fixmap.h to avoid fixmap.h in mmu.h

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/5eba12392a018be28ad0a02ed844767b132589e7.1695659959.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy
2023-09-25 20:31:21 +02:00
committed by Michael Ellerman
parent da9554e0fe
commit d3e0179672
11 changed files with 29 additions and 15 deletions
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16
arch/powerpc/include/asm/fixmap.h
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@@ -23,18 +23,6 @@
#include <asm/kmap_size.h>
#endif
#ifdef CONFIG_PPC64
#define FIXADDR_TOP (IOREMAP_END + FIXADDR_SIZE)
#else
#define FIXADDR_SIZE 0
#ifdef CONFIG_KASAN
#include <asm/kasan.h>
#define FIXADDR_TOP (KASAN_SHADOW_START - PAGE_SIZE)
#else
#define FIXADDR_TOP ((unsigned long)(-PAGE_SIZE))
#endif
#endif
/*
* Here we define all the compile-time 'special' virtual
* addresses. The point is to have a constant address at
@@ -119,5 +107,9 @@ static inline void __set_fixmap(enum fixed_addresses idx,
#define __early_set_fixmap __set_fixmap
#ifdef CONFIG_PPC_8xx
#define VIRT_IMMR_BASE (__fix_to_virt(FIX_IMMR_BASE))
#endif
#endif /* !__ASSEMBLY__ */
#endif