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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CRIS_PAGE_H
#define _CRIS_PAGE_H

#include <arch/page.h>
#include <linux/const.h>

/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT	13
#define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK	(~(PAGE_SIZE-1))

#define clear_page(page)        memset((void *)(page), 0, PAGE_SIZE)
#define copy_page(to,from)      memcpy((void *)(to), (void *)(from), PAGE_SIZE)

#define clear_user_page(page, vaddr, pg)    clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)

#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
	alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE

/*
 * These are used to make use of C type-checking..
 */
#ifndef __ASSEMBLY__
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
typedef struct page *pgtable_t;
#endif

#define pte_val(x)	((x).pte)
#define pgd_val(x)	((x).pgd)
#define pgprot_val(x)	((x).pgprot)

#define __pte(x)	((pte_t) { (x) } )
#define __pgd(x)	((pgd_t) { (x) } )
#define __pgprot(x)	((pgprot_t) { (x) } )

/* On CRIS the PFN numbers doesn't start at 0 so we have to compensate */
/* for that before indexing into the page table starting at mem_map    */
#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
#define pfn_valid(pfn)		(((pfn) - (PAGE_OFFSET >> PAGE_SHIFT)) < max_mapnr)

/* to index into the page map. our pages all start at physical addr PAGE_OFFSET so
 * we can let the map start there. notice that we subtract PAGE_OFFSET because
 * we start our mem_map there - in other ports they map mem_map physically and
 * use __pa instead. in our system both the physical and virtual address of DRAM
 * is too high to let mem_map start at 0, so we do it this way instead (similar
 * to arm and m68k I think)
 */ 

#define virt_to_page(kaddr)    (mem_map + (((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT))
#define virt_addr_valid(kaddr)	pfn_valid((unsigned)(kaddr) >> PAGE_SHIFT)

/* convert a page (based on mem_map and forward) to a physical address
 * do this by figuring out the virtual address and then use __pa
 */

#define page_to_phys(page)     __pa((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)

#ifndef __ASSEMBLY__

#endif /* __ASSEMBLY__ */

#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>

#endif /* _CRIS_PAGE_H */


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Name Type Size Permission Actions
Kbuild File 729 B 0644
asm-offsets.h File 35 B 0644
axisflashmap.h File 1.92 KB 0644
bitops.h File 1.27 KB 0644
bug.h File 108 B 0644
bugs.h File 300 B 0644
cache.h File 133 B 0644
cacheflush.h File 1.3 KB 0644
checksum.h File 2.01 KB 0644
delay.h File 537 B 0644
dma-mapping.h File 399 B 0644
dma.h File 458 B 0644
eshlibld.h File 3.49 KB 0644
etraxi2c.h File 1019 B 0644
fasttimer.h File 1.12 KB 0644
fb.h File 244 B 0644
ftrace.h File 12 B 0644
hw_irq.h File 53 B 0644
io.h File 732 B 0644
irq.h File 194 B 0644
irqflags.h File 27 B 0644
mmu.h File 155 B 0644
mmu_context.h File 927 B 0644
page.h File 2.52 KB 0644
pci.h File 1.05 KB 0644
pgalloc.h File 1.36 KB 0644
pgtable.h File 9.58 KB 0644
processor.h File 1.82 KB 0644
ptrace.h File 393 B 0644
segment.h File 148 B 0644
serial.h File 211 B 0644
shmparam.h File 232 B 0644
signal.h File 505 B 0644
stacktrace.h File 213 B 0644
string.h File 508 B 0644
swab.h File 159 B 0644
switch_to.h File 449 B 0644
termios.h File 1.71 KB 0644
thread_info.h File 2.47 KB 0644
timex.h File 433 B 0644
tlb.h File 453 B 0644
tlbflush.h File 1.09 KB 0644
uaccess.h File 9.59 KB 0644
ucontext.h File 322 B 0644
unaligned.h File 345 B 0644
unistd.h File 972 B 0644
user.h File 2.14 KB 0644