Viewing file:  mmu.h (2.18 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MMU_H
#define __MMU_H
/*
* Privileged Space Mapping Buffer (PMB) definitions
*/
#define PMB_PASCR 0xff000070
#define PMB_IRMCR 0xff000078
#define PASCR_SE 0x80000000
#define PMB_ADDR 0xf6100000
#define PMB_DATA 0xf7100000
#define NR_PMB_ENTRIES 16
#define PMB_E_MASK 0x0000000f
#define PMB_E_SHIFT 8
#define PMB_PFN_MASK 0xff000000
#define PMB_SZ_16M 0x00000000
#define PMB_SZ_64M 0x00000010
#define PMB_SZ_128M 0x00000080
#define PMB_SZ_512M 0x00000090
#define PMB_SZ_MASK PMB_SZ_512M
#define PMB_C 0x00000008
#define PMB_WT 0x00000001
#define PMB_UB 0x00000200
#define PMB_CACHE_MASK (PMB_C | PMB_WT | PMB_UB)
#define PMB_V 0x00000100
#define PMB_NO_ENTRY (-1)
#ifndef __ASSEMBLY__
#include <linux/errno.h>
#include <linux/threads.h>
#include <asm/page.h>
/* Default "unsigned long" context */
typedef unsigned long mm_context_id_t[NR_CPUS];
typedef struct {
#ifdef CONFIG_MMU
mm_context_id_t id;
void *vdso;
#else
unsigned long end_brk;
#endif
#ifdef CONFIG_BINFMT_ELF_FDPIC
unsigned long exec_fdpic_loadmap;
unsigned long interp_fdpic_loadmap;
#endif
} mm_context_t;
#ifdef CONFIG_PMB
/* arch/sh/mm/pmb.c */
bool __in_29bit_mode(void);
void pmb_init(void);
int pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
unsigned long size, pgprot_t prot);
void __iomem *pmb_remap_caller(phys_addr_t phys, unsigned long size,
pgprot_t prot, void *caller);
int pmb_unmap(void __iomem *addr);
#else
static inline int
pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
unsigned long size, pgprot_t prot)
{
return -EINVAL;
}
static inline void __iomem *
pmb_remap_caller(phys_addr_t phys, unsigned long size,
pgprot_t prot, void *caller)
{
return NULL;
}
static inline int pmb_unmap(void __iomem *addr)
{
return -EINVAL;
}
#define pmb_init(addr) do { } while (0)
#ifdef CONFIG_29BIT
#define __in_29bit_mode() (1)
#else
#define __in_29bit_mode() (0)
#endif
#endif /* CONFIG_PMB */
static inline void __iomem *
pmb_remap(phys_addr_t phys, unsigned long size, pgprot_t prot)
{
return pmb_remap_caller(phys, size, prot, __builtin_return_address(0));
}
#endif /* __ASSEMBLY__ */
#endif /* __MMU_H */
|