early_alloc.c File Reference

#include <asm/kvm_pgtable.h>
#include <nvhe/early_alloc.h>
#include <nvhe/memory.h>

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Functions
unsigned long	hyp_early_alloc_nr_used_pages (void)
void *	hyp_early_alloc_contig (unsigned int nr_pages)
void *	hyp_early_alloc_page (void *arg)
static void	hyp_early_alloc_get_page (void *addr)
static void	hyp_early_alloc_put_page (void *addr)
void	hyp_early_alloc_init (void *virt, unsigned long size)

Variables
struct kvm_pgtable_mm_ops	hyp_early_alloc_mm_ops
s64 __ro_after_init	hyp_physvirt_offset
static unsigned long	base
static unsigned long	end
static unsigned long	cur

Function Documentation

hyp_early_alloc_contig()

void* hyp_early_alloc_contig

(

unsigned int

nr_pages

)

Definition at line 24 of file early_alloc.c.

{
    unsigned long size = (nr_pages << PAGE_SHIFT);
    void *ret = (void *)cur;
 
    if (!nr_pages)
        return NULL;
 
    if (end - cur < size)
        return NULL;
 
    cur += size;
    memset(ret, 0, size);
 
    return ret;
}

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hyp_early_alloc_get_page()

static void hyp_early_alloc_get_page ( void *  addr )

static

Definition at line 46 of file early_alloc.c.

{ }

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hyp_early_alloc_init()

void hyp_early_alloc_init	(	void *	virt,
		unsigned long	size
	)

Definition at line 49 of file early_alloc.c.

{
    base = cur = (unsigned long)virt;
    end = base + size;
 
    hyp_early_alloc_mm_ops.zalloc_page = hyp_early_alloc_page;
    hyp_early_alloc_mm_ops.phys_to_virt = hyp_phys_to_virt;
    hyp_early_alloc_mm_ops.virt_to_phys = hyp_virt_to_phys;
    hyp_early_alloc_mm_ops.get_page = hyp_early_alloc_get_page;
    hyp_early_alloc_mm_ops.put_page = hyp_early_alloc_put_page;
}

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hyp_early_alloc_nr_used_pages()

unsigned long hyp_early_alloc_nr_used_pages

(

void

)

Definition at line 19 of file early_alloc.c.

{
    return (cur - base) >> PAGE_SHIFT;
}

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hyp_early_alloc_page()

void* hyp_early_alloc_page

(

void *

arg

)

Definition at line 41 of file early_alloc.c.

{
    return hyp_early_alloc_contig(1);
}

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hyp_early_alloc_put_page()

static void hyp_early_alloc_put_page ( void *  addr )

static

Definition at line 47 of file early_alloc.c.

{ }

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Variable Documentation

base

unsigned long base

static

Definition at line 15 of file early_alloc.c.

cur

unsigned long cur

static

Definition at line 17 of file early_alloc.c.

end

unsigned long end

static

Definition at line 16 of file early_alloc.c.

hyp_early_alloc_mm_ops

struct kvm_pgtable_mm_ops hyp_early_alloc_mm_ops

Definition at line 1 of file early_alloc.c.

hyp_physvirt_offset

s64 __ro_after_init hyp_physvirt_offset

Definition at line 13 of file early_alloc.c.