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/usr/src/linux-headers-5.15.0-181/arch/hexagon/include/asm/

/usr/src/linux-headers-5.15.0-181/arch/hexagon/include/asm

Name	Size	Mode	Actions
asm-offsets.h	35	0644	edit dl rm
atomic.h	4361	0644	edit dl rm
bitops.h	6152	0644	edit dl rm
cache.h	555	0644	edit dl rm
cacheflush.h	2725	0644	edit dl rm
checksum.h	685	0644	edit dl rm
cmpxchg.h	2003	0644	edit dl rm
delay.h	344	0644	edit dl rm
dma.h	300	0644	edit dl rm
elf.h	5758	0644	edit dl rm
exec.h	398	0644	edit dl rm
fixmap.h	369	0644	edit dl rm
fpu.h	90	0644	edit dl rm
futex.h	2306	0644	edit dl rm
hexagon_vm.h	5909	0644	edit dl rm
intrinsics.h	369	0644	edit dl rm
io.h	6264	0644	edit dl rm
irq.h	523	0644	edit dl rm
irqflags.h	860	0644	edit dl rm
Kbuild	131	0644	edit dl rm
kgdb.h	754	0644	edit dl rm
linkage.h	237	0644	edit dl rm
mem-layout.h	2865	0644	edit dl rm
mmu.h	490	0644	edit dl rm
mmu_context.h	1544	0644	edit dl rm
page.h	4179	0644	edit dl rm
perf_event.h	207	0644	edit dl rm
pgalloc.h	2709	0644	edit dl rm
pgtable.h	11952	0644	edit dl rm
processor.h	3173	0644	edit dl rm
smp.h	707	0644	edit dl rm
spinlock.h	3295	0644	edit dl rm
spinlock_types.h	545	0644	edit dl rm
string.h	472	0644	edit dl rm
suspend.h	238	0644	edit dl rm
switch_to.h	478	0644	edit dl rm
syscall.h	1170	0644	edit dl rm
syscalls.h	204	0644	edit dl rm
thread_info.h	3505	0644	edit dl rm
time.h	346	0644	edit dl rm
timex.h	495	0644	edit dl rm
tlb.h	253	0644	edit dl rm
tlbflush.h	1497	0644	edit dl rm
traps.h	410	0644	edit dl rm
uaccess.h	1870	0644	edit dl rm
vdso.h	307	0644	edit dl rm
vermagic.h	299	0644	edit dl rm
vmalloc.h	99	0644	edit dl rm
vm_fault.h	359	0644	edit dl rm
vm_mmu.h	2818	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/hexagon/include/asm/page.h (4179B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Page management definitions for the Hexagon architecture
 *
 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
 */

#ifndef _ASM_PAGE_H
#define _ASM_PAGE_H

#include <linux/const.h>

/*  This is probably not the most graceful way to handle this.  */

#ifdef CONFIG_PAGE_SIZE_4KB
#define PAGE_SHIFT 12
#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_4KB
#endif

#ifdef CONFIG_PAGE_SIZE_16KB
#define PAGE_SHIFT 14
#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_16KB
#endif

#ifdef CONFIG_PAGE_SIZE_64KB
#define PAGE_SHIFT 16
#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_64KB
#endif

#ifdef CONFIG_PAGE_SIZE_256KB
#define PAGE_SHIFT 18
#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_256KB
#endif

#ifdef CONFIG_PAGE_SIZE_1MB
#define PAGE_SHIFT 20
#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_1MB
#endif

/*
 *  These should be defined in hugetlb.h, but apparently not.
 *  "Huge" for us should be 4MB or 16MB, which are both represented
 *  in L1 PTE's.  Right now, it's set up for 4MB.
 */
#ifdef CONFIG_HUGETLB_PAGE
#define HPAGE_SHIFT 22
#define HPAGE_SIZE (1UL << HPAGE_SHIFT)
#define HPAGE_MASK (~(HPAGE_SIZE-1))
#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT)
#define HVM_HUGEPAGE_SIZE 0x5
#endif

#define PAGE_SIZE  (1UL << PAGE_SHIFT)
#define PAGE_MASK  (~((1 << PAGE_SHIFT) - 1))

#ifdef __KERNEL__
#ifndef __ASSEMBLY__

/*
 * This is for PFN_DOWN, which mm.h needs.  Seems the right place to pull it in.
 */
#include <linux/pfn.h>

/*
 * We implement a two-level architecture-specific page table structure.
 * Null intermediate page table level (pmd, pud) definitions will come from
 * asm-generic/pagetable-nopmd.h and asm-generic/pagetable-nopud.h
 */
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;

#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) })

/*
 * We need a __pa and a __va routine for kernel space.
 * MIPS says they're only used during mem_init.
 * also, check if we need a PHYS_OFFSET.
 */
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET)
#define __va(x) ((void *)((unsigned long)(x) - PHYS_OFFSET + PAGE_OFFSET))

/* The "page frame" descriptor is defined in linux/mm.h */
struct page;

/* Returns page frame descriptor for virtual address. */
#define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(__pa(kaddr)))

/* Default vm area behavior is non-executable.  */
#define VM_DATA_DEFAULT_FLAGS	VM_DATA_FLAGS_NON_EXEC

#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

/*  Need to not use a define for linesize; may move this to another file.  */
static inline void clear_page(void *page)
{
	/*  This can only be done on pages with L1 WB cache */
	asm volatile(
		"	loop0(1f,%1);\n"
		"1:	{ dczeroa(%0);\n"
		"	  %0 = add(%0,#32); }:endloop0\n"
		: "+r" (page)
		: "r" (PAGE_SIZE/32)
		: "lc0", "sa0", "memory"
	);
}

#define copy_page(to, from)	memcpy((to), (from), PAGE_SIZE)

/*
 * Under assumption that kernel always "sees" user map...
 */
#define clear_user_page(page, vaddr, pg)	clear_page(page)
#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)

/*
 * page_to_phys - convert page to physical address
 * @page - pointer to page entry in mem_map
 */
#define page_to_phys(page)      (page_to_pfn(page) << PAGE_SHIFT)

#define virt_to_pfn(kaddr)      (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn)        __va((pfn) << PAGE_SHIFT)

#define page_to_virt(page)	__va(page_to_phys(page))

/*
 * For port to Hexagon Virtual Machine, MAYBE we check for attempts
 * to reference reserved HVM space, but in any case, the VM will be
 * protected.
 */
#define kern_addr_valid(addr)   (1)

#include <asm/mem-layout.h>
#include <asm-generic/memory_model.h>
/* XXX Todo: implement assembly-optimized version of getorder. */
#include <asm-generic/getorder.h>

#endif /* ifdef __ASSEMBLY__ */
#endif /* ifdef __KERNEL__ */

#endif

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