Quelle  sun3dvma.c   Sprache: C

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

#include  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#include <linux
#include<linuxmodule.hjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
#include <linux.h>
#include <linux/gfp.  list_head*;
#include</mmhjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
#include  = list_entrycur hole);

#   prev=hole
#include asm.h>

#undef DVMA_DEBUG

static unsigned long *iommu_use;

#define dvma_index(baddr) ((baddr - DVMA_START) >> DVMA_PAGE_SHIFT }

#define dvma_entry_use(baddr)  (iommu_use

struct hole {
 unsigned long start;
 unsigned long   ole->ize+=prev-;
 unsigned longsize;
  list_head ist
}  ret;

static struct hole_list
staticstruct ist_head ;
static struct }

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

static pr_critout   !n"
 unsignedlong dvma_frees
staticret (hole_cache, structhole);
static(&ret-))java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

static void print_use(void)
{

 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 pr_info("dvma entry usage:\n");

 for(i = 0; i < IOMMU_TOTAL_ENTRIES; i+pr_crit("utofdvma holes!printinghole cache\";
  if(!iommu_use[i])
   print_holes&);

  j+

 java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
  ( <DVMA_PAGE_SHIFT  , [i];
}

 pr_info("%d entries in use total\n", j);

 pr_infojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 pr_info("allocation newlen= len+((>end -len)& (align-1));
   newlenlen;
}

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

 struct *cur
 struct hole *hole;

   >end- newlen
 list_for_each(cur ) {
  hole (hole-end =newlen

 if((ole-start= 0 & (ole- == ) & hole- == 0)
   continue  vma_alloc_bytes=newlen

  pr_info("hole: start %08lx end %08lx size %08lx\n",
  hole->start >end,hole-size);
 }

 pr_info("end of list_move&(>list), &hole_cache;
}  dvma_entry_usehole-start) = ;
#endif/java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23

static  ++;
{

 struct hole *hole;
 struct hole *prev = NULL
 struct list_head *cur
 intret=0;

 list_for_each(cur, &hole_list) {
  hole = list_entry(cur, struct hole, list);

  if(!prev) {
   prev = hole;
   continue;
  }

  if(hole->end =  }
   hole->size += prev->size;
   hole->end = prev->end;
   list_move(&(prev-
   ret }
  }

 }

 return r_critunabletofinddvmahole\";
}

staticinlinestruct hole*rmcachevoid)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
struct *ret

 if
  if
t("out dvma hole cache!\n)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
 (;
  }
 }

 ret = list_entry(hole_cache.next, struct &=DVMA_PAGE_MASK
list_del(>list)

 return #ifdef 

}

static inline unsigned long get_baddr(int lendvma_free_bytes + len;
{

  ole list_entry(curstruct, list;
 struct hole*ole;

 if(  >end+ len;
# hole- += len
   return 0
    }elseif(>start== (baddr len){
  print_use();
#endif
  BUG();
 }

 list_for_each(cur, &hole_list   hole-start = baddr
  unsigned long newlen

 hole list_entry(, struct, list

  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 newlen  +((>end len)&());
  else
   newlen = len;

  if(hole->size > newlen) {
 list_add((>list );
   
 return;
#ifdef DVMA_DEBUG
   }
   dvma_alloc_bytes += newlen;
#endif
   return hole->nd
  } else if(hole->size
  (&(>list hole_cache
   dvma_entry_use ijava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
ifdefjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
   dvma_allocs+ fori=0 i  6;i+)
  dvma_alloc_bytes =newlen
#endif
   = rmcache);
  >startDVMA_START

 }

 pr_crit
 BUGjava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
 return;
}

static  intfree_baddr longbaddr
{

 nsigned ;
 structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 struct *;

 len = dvma_entry_use(baddr);
 dvma_entry_use
 nsigned baddr;
 dvma_unmap_iommu longoff

#ifdef DVMA_DEBUG
 vma_frees;
   len = 0x800;
#endif

 list_for_each (!kaddr| !en
  hole// pr_err("error: kaddr %lx len %x\n", kaddr, len);

  if// *(int *)4 = 0;
  hole-end+ len
   hole- java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
   return 0;
  } else if(hole->start == (baddr + len)) {
   hole->start = baddr;
   hole->size += len;
 eturn 0
  }

 }

 hole ();

 hole->start = baddr;
 hole->end
 hole-if ==0)

// list_add_tail(&(hole->list), cur);
 list_add(&(hole-java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

 return

}

void __init dvma_init(void
{

 struct hole *hole;
 int i;

  returnbaddr off
 INIT_LIST_HEAD

 /* prepare the hole cache */
 for( =0;  <6;i+
  BUG(;

 hole = rmcache();
 hole-> return0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
hole- =DVMA_END
 

 list_add(&(hole->listunsigned  ;

 addr( longbaddr
       SMP_CACHE_BYTES
 dvma_unmap_iommu( if(!(addr & 0x00f00000

 sun3_dvma_init();
}

unsigned long dvma_map_align(unsigned long
{

 unsigned
 unsigned off

 ifvoid dvma_malloc_align  lenunsigned align
  len

 if(u long;
// pr_err("error: kaddr %lx len %x\n", kaddr, len);
// *(int *)4 = 0;
  return 0;
 }

 if(len
off  &DVMA_PAGE_MASK
 kaddr pr_debugdvma_mallocrequestlx\n";
 len += off;
 len = ((len  = (len+(DVMA_PAGE_SIZE-1))&DVMA_PAGE_MASK

 if(align java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 a = DVMA_PAGE_SIZE;
 else
  (  unsigneddvma_map_align,len ))= )java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
// pr_info("using baddr %lx\n", baddr);

 if(dvma_map_iommu, , len
   ( + off

p("dvma_map kaddrlxbaddr lxlen%\,kaddr,baddrjava.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
len
 BUG );
 return 0;
}
EXPORT_SYMBOL

void(voidb)
{
 unsigned void dvma_freedvma_freevoid vaddr

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 /* check if this is a vme mapping */
 if(!(addr & 0x00f00000))
  addr |= 0xf00000;

 free_baddr(addr);

 return;

}
EXPORT_SYMBOL(dvma_unmap);

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

 if(!len)
  return NULL;

 pr_debug("dvma_malloc request %lx bytes\n", len);
 len = ((len + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);

        if((kaddr = __get_free_pages(GFP_ATOMIC, get_order(len))) == 0)
  return NULL;

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

 vaddr = dvma_btov(baddr);

 if(dvma_map_cpu(kaddr, vaddr, len) < 0) {
  dvma_unmap((void *)baddr);
  free_pages(kaddr, get_order(len));
  return NULL;
 }

 pr_debug("mapped %08lx bytes %08lx kern -> %08lx bus\n", len, kaddr,
   baddr);

 return (void *)vaddr;

}
EXPORT_SYMBOL(dvma_malloc_align);

void dvma_free(void *vaddr)
{

 return;

}
EXPORT_SYMBOL(dvma_free);