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linux/arch/sparc/mm/init_64.h

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sparc64: Kill sparse warnings in mm/init.h 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 07:19:21 +00:00
#ifndef _SPARC64_MM_INIT_H
#define _SPARC64_MM_INIT_H
sparc64: Document the shift counts used to validate linear kernel addresses. This way we can see exactly what they are derived from, and in particular how they would change if we were to use a different PAGE_OFFSET value. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Bob Picco <bob.picco@oracle.com>
2013-09-18 22:39:06 +00:00
#include <asm/page.h>
sparc64: Kill sparse warnings in mm/init.h 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 07:19:21 +00:00
/* Most of the symbols in this file are defined in init.c and
* marked non-static so that assembler code can get at them.
*/
sparc64: Document the shift counts used to validate linear kernel addresses. This way we can see exactly what they are derived from, and in particular how they would change if we were to use a different PAGE_OFFSET value. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Bob Picco <bob.picco@oracle.com>
2013-09-18 22:39:06 +00:00
#define MAX_PHYS_ADDRESS (1UL << MAX_PHYS_ADDRESS_BITS)
sparc64: Kill sparse warnings in mm/init.h 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 07:19:21 +00:00
sparc64: Support 2GB and 16GB page sizes for kernel linear mappings. SPARC-T4 supports 2GB pages. So convert kpte_linear_bitmap into an array of 2-bit values which index into kern_linear_pte_xor. Now kern_linear_pte_xor is used for 4 page size aligned regions, 4MB, 256MB, 2GB, and 16GB respectively. Enabling 2GB pages is currently hardcoded using a check against sun4v_chip_type. In the future this will be done more cleanly by interrogating the machine description which is the correct way to determine this kind of thing. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-07 01:13:58 +00:00
extern unsigned long kern_linear_pte_xor[4];
sparc64: Kill sparse warnings in mm/init.h 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 07:19:21 +00:00
extern unsigned int sparc64_highest_unlocked_tlb_ent;
extern unsigned long sparc64_kern_pri_context;
extern unsigned long sparc64_kern_pri_nuc_bits;
extern unsigned long sparc64_kern_sec_context;
sparc: drop use of extern for prototypes in arch/sparc/* Drop the remaining uses of extern for prototypes in .h files in the sparc specific part of the kernel tree. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-16 21:25:51 +00:00
void mmu_info(struct seq_file *m);
sparc64: Kill sparse warnings in mm/init.h 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 07:19:21 +00:00
struct linux_prom_translation {
unsigned long virt;
unsigned long size;
unsigned long data;
};
/* Exported for kernel TLB miss handling in ktlb.S */
extern struct linux_prom_translation prom_trans[512];
extern unsigned int prom_trans_ents;
/* Exported for SMP bootup purposes. */
extern unsigned long kern_locked_tte_data;
sparc: drop use of extern for prototypes in arch/sparc/* Drop the remaining uses of extern for prototypes in .h files in the sparc specific part of the kernel tree. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-16 21:25:51 +00:00
void prom_world(int enter);
sparc64: Kill sparse warnings in mm/init.h 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 07:19:21 +00:00
#endif /* _SPARC64_MM_INIT_H */
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