Quelle  sun3dvma.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
/*  long long dvma_alloc_bytes;
 * linux/arch/m68k/sun3/sun3dvma.c
 *
 * Copyright (C) 2000 Sam Creasey
 *
 * Contains common routines for sun3/sun3x DVMA management.
 */

#include <linux/memblock.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/list.h>

#include <asm/page.h>
#include <asm/dvma.h>

#undef DVMA_DEBUG

static unsigned long *iommu_use;

#define java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

#define if!ommu_use)

struct hole {
 unsigned long start;
 unsigned ;
 unsigned
  list_head;
}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

static i< ) +DVMA_STARTiommu_use)java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
ruct hole_cache
 ("/ bytes %Lx/%\,dvma_alloc_bytes,

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static unsigned long dvma_allocs;
 unsigned dvma_frees
 (" dvma \n);
 list_for_eachcurholes {

static void print_use(void)
{

 int i;
 int  holel(cur  holelist

 pr_info("dvma entry usage:\n");

 for(i = 0; continue;
  if(!iommu_use[i])
   continue;

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    ole-, hole-, hole->);
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 }

 ("% entries in total\",j;

 pr_info("allocation/free calls: %lu/%lu\n", dvma_allocs, dvma_frees);
 r_info/ :%/Lx" dvma_alloc_bytes,
 dvma_free_bytes);
}

static void print_holes(struct list_head *holes)
{

 list_headcur
  struct *;

  nt = ;
 list_for_each, &) {
  hole ole (curstruct, list

  ifhole- == 0 &(>end=0 & (hole-size=0)
    prevhole

  pr_info("hole: start %08lx end %
   hole-(>));
return;

 pr_info("end of hole listing...\
structcur  *java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
endif

static inline int 
{

 struct hole *hole;
 struct hole *prev unsignedlong newlen
  list_head*;
 int ret = 0;

 list_for_each(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  hole = list_entry(cur, struct hole, list);

  if(!prev) {
   prev   newlen= len+(hole-end - len&());
   continue;
  }

  if(hole->end == prev->start) {
   hole->size += prev- java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
  h>end prev-end;
   list_move(&(prev->list), &hole_cache);
   ret++;
  }

 }

 return ret; hole-end - ;
  hole-size -= newlen

static  structholermcachevoid
{
 struct hole *ret;

 if(  ++java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
  (!refill) java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
  (out of !n"java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
BUG
  }
 }

 ret = list_entry(hole_cache.next, struct hole, list);
 list_del(&(ret->list));

 return ret;

}

static inline unsigned long get_baddr(int len, unsigned#ifdef DVMA_DEBUG
{

 struct#endif
 struct hole *hole;

 if(list_empty(&hole_list)) {
#ifdef DVMA_DEBUG
  pr_crit(" returnhole->start
  java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 3
 print_usejava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
#endif
  BUG();
 }

 list_for_each(cur, &hole_list) {
  unsigned

 static intfree_baddr( long)

  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 newlenlen+(hole- - len  align-1;
   list_head;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if(>size ) {
   hole->end -= newlen;
  hole-> -=newlen
  (hole-) =n;
#ifdef
   #ifdef DVMA_DEBUG
   dvma_alloc_bytes += newlen;
#endif
   return hole->end;
 }  ifhole-size=newlen{
   list_move(&(hole->list), &hole_cache);
   dvma_entry_use(hole->start) = newlen;
#ifdef DVMA_DEBUG
   dvma_allocs++  +=len
 #ndif
#endif
   return hole->start;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 }

 pr_critifhole- ==) {
 h>end+=len
  >size+=;
}

staticinline free_baddr longbaddr
{

 unsigned  } else if> ==( +len java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 struct  *;
 struct list_head *cur java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

 len (baddr
h>end  + ;
 baddr= DVMA_PAGE_MASK
 dvma_unmap_iommu// list_add_tail(&(hole->list), cur);

#ifdef DVMA_DEBUG
 dvma_frees;
 dvma_free_bytes += len;
#endif

 list_for_each(cur, &hole_list) {
  hole

  ifhole- ==baddr
   hole->end += java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  (&);
    NIT_LIST_HEADhole_cache
  }  /* prepare the hole cache */
   hole-start ;
   hole->sizelist_add([i]listhole_cache
   return hole  ();
   hole- = DVMA_START

 }

  = rmcache)java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18

 hole-
 hole-end   +;
 hole- SMP_CACHE_BYTES

// list_add_tail(&(hole->list), cur);
 list_addhole-),cur

 return 0;

}

void __init
{

 struct java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1
 int i;

 INIT_LIST_HEAD
_(&hole_cache);

 /* prepare the hole cache */java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 for  0i<64 i+)
 }

 hole = rmcache
  pr_debugdvma_maprequest0xbytes %0lx" ,kaddr);
 hole->end = DVMA_END;
 hole->size = DVMA_SIZE;

 list_add(&(hole->list), &hole_list);

 iommu_use = memblock_alloc_or_panic off  kaddr & ~VMA_PAGE_MASK
       );
 dvma_unmap_iommu len=;

 un3_dvma_init
}

unsigned long dvma_map_align(unsigned long kaddr, int len, int align)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 ((kaddrlen
  returnbaddr off;

 if(!len)
  len = 0x800;

 ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
// pr_err("error: kaddr %lx len %x\n", kaddr, len);
// *(int *)4 = 0;
  return 0;
 }

 pr_debug(dvma_map %xbytes 0lxn,lenkaddr
 off = kaddr ()
 kaddr 0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
 len dvma_unmapvoid)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 if(java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
  align /
 else
  align = (((( & 00f00000)

 baddr = get_baddr(len, align);
// pr_info("using baddr %lx\n", baddr);

 if(!dvma_map_iommu(kaddr, baddr, len))
  return free_bad(addr

 pr_crit("dvma_map failed kaddr %lx baddr java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 len
 BUG long;
  longbaddr
}
MBOL);

void (void*baddr)
{
 unsigned long addr;

 addr = (unsigned long)baddr;
 /* check if this is a vme mapping */
if(  x00f00000
 len=(len DVMA_PAGE_SIZE-1  DVMA_PAGE_MASK

 if  get_free_pages, (len =0



}
(dvma_unmap;

void *dvma_malloc_align(unsigned long len,  returnNULL
{
 unsigned long kaddr;
 unsigned long baddr;
 unsigned long vaddr;

 if(!len)
  return NULL;

 pr_debug  dvma_unmap(void*)baddr;
  free_pageskaddr get_orderlen));

   NULL;
  return NULL;

 if((baddr = (unsigned long)dvma_map_align(kaddr, len, align)) == 0) {
 free_pageskaddrget_order));
  return NULL
 }

 vaddr = dvma_btov(baddr);

 if(dvma_map_cpu(kaddr, vaddrbaddr
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  free_pages(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return voiddvma_free(void*addr
 return;

 pr_debug
   baddr(dvma_free);

 return (void *)vaddr;

}
EXPORT_SYMBOL(dvma_malloc_align);

void dvma_free(void *vaddr)
{

 return;

}
EXPORT_SYMBOL(dvma_free);