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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [m68k/] [kernel/] [sys_m68k.c] - Blame information for rev 1777

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/*
 * linux/arch/m68k/kernel/sys_m68k.c
 *
 * This file contains various random system calls that
 * have a non-standard calling sequence on the Linux/m68k
 * platform.
 */
 
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/mman.h>
 
#include <asm/segment.h>
#include <asm/cachectl.h>
 
/*
 * sys_pipe() is the normal C calling standard for creating
 * a pipe. It's not the way unix traditionally does this, though.
 */
asmlinkage int sys_pipe(unsigned long * fildes)
{
        int fd[2];
        int error;
 
        error = verify_area(VERIFY_WRITE,fildes,8);
        if (error)
                return error;
        error = do_pipe(fd);
        if (error)
                return error;
        put_user(fd[0],0+fildes);
        put_user(fd[1],1+fildes);
        return 0;
}
 
/*
 * Perform the select(nd, in, out, ex, tv) and mmap() system
 * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to
 * handle more than 4 system call parameters, so these system calls
 * used a memory block for parameter passing..
 */
 
asmlinkage int old_mmap(unsigned long *buffer)
{
        int error;
        unsigned long flags;
        struct file * file = NULL;
 
        error = verify_area(VERIFY_READ, buffer, 6*sizeof(long));
        if (error)
                return error;
        flags = get_user(buffer+3);
        if (!(flags & MAP_ANONYMOUS)) {
                unsigned long fd = get_user(buffer+4);
                if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
                        return -EBADF;
        }
        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
        return do_mmap(file, get_user(buffer), get_user(buffer+1),
                       get_user(buffer+2), flags, get_user(buffer+5));
}
 
 
extern asmlinkage int sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
 
asmlinkage int old_select(unsigned long *buffer)
{
        int n;
        fd_set *inp;
        fd_set *outp;
        fd_set *exp;
        struct timeval *tvp;
 
        n = verify_area(VERIFY_READ, buffer, 5*sizeof(unsigned long));
        if (n)
          return n;
 
        n = get_user(buffer);
        inp = (fd_set *) get_user(buffer+1);
        outp = (fd_set *) get_user(buffer+2);
        exp = (fd_set *) get_user(buffer+3);
        tvp = (struct timeval *) get_user(buffer+4);
        return sys_select(n, inp, outp, exp, tvp);
}
 
/*
 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
 *
 * This is really horribly ugly.
 */
asmlinkage int sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)
{
        int version;
 
        version = call >> 16; /* hack for backward compatibility */
        call &= 0xffff;
 
        if (call <= SEMCTL)
                switch (call) {
                case SEMOP:
                        return sys_semop (first, (struct sembuf *)ptr, second);
                case SEMGET:
                        return sys_semget (first, second, third);
                case SEMCTL: {
                        union semun fourth;
                        int err;
                        if (!ptr)
                                return -EINVAL;
                        if ((err = verify_area (VERIFY_READ, ptr, sizeof(long))))
                                return err;
                        fourth.__pad = get_user((void **)ptr);
                        return sys_semctl (first, second, third, fourth);
                        }
                default:
                        return -EINVAL;
                }
        if (call <= MSGCTL)
                switch (call) {
                case MSGSND:
                        return sys_msgsnd (first, (struct msgbuf *) ptr,
                                           second, third);
                case MSGRCV:
                        switch (version) {
                        case 0: {
                                struct ipc_kludge tmp;
                                int err;
                                if (!ptr)
                                        return -EINVAL;
                                if ((err = verify_area (VERIFY_READ, ptr, sizeof(tmp))))
                                        return err;
                                memcpy_fromfs (&tmp,(struct ipc_kludge *) ptr,
                                               sizeof (tmp));
                                return sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp, third);
                                }
                        case 1: default:
                                return sys_msgrcv (first, (struct msgbuf *) ptr, second, fifth, third);
                        }
                case MSGGET:
                        return sys_msgget ((key_t) first, second);
                case MSGCTL:
                        return sys_msgctl (first, second, (struct msqid_ds *) ptr);
                default:
                        return -EINVAL;
                }
        if (call <= SHMCTL)
                switch (call) {
                case SHMAT:
                        switch (version) {
                        case 0: default: {
                                ulong raddr;
                                int err;
                                if ((err = verify_area(VERIFY_WRITE, (ulong*) third, sizeof(ulong))))
                                        return err;
                                err = sys_shmat (first, (char *) ptr, second, &raddr);
                                if (err)
                                        return err;
                                put_user (raddr, (ulong *) third);
                                return 0;
                                }
                        case 1: /* iBCS2 emulator entry point */
                                if (get_fs() != get_ds())
                                        return -EINVAL;
                                return sys_shmat (first, (char *) ptr, second, (ulong *) third);
                        }
                case SHMDT:
                        return sys_shmdt ((char *)ptr);
                case SHMGET:
                        return sys_shmget (first, second, third);
                case SHMCTL:
                        return sys_shmctl (first, second, (struct shmid_ds *) ptr);
                default:
                        return -EINVAL;
                }
        return -EINVAL;
}
 
asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)
{
  return -ENOSYS;
}
 
/* Convert virtual address VADDR to physical address PADDR, recording
   in VALID whether the virtual address is actually mapped.  */
#define virt_to_phys_040(vaddr, paddr, valid)                           \
{                                                                       \
  register unsigned long _tmp1 __asm__ ("a0") = (vaddr);                \
  register unsigned long _tmp2 __asm__ ("d0");                          \
  unsigned long _mmusr;                                                 \
                                                                        \
  __asm__ __volatile__ (".word 0xf568 /* ptestr (%1) */\n\t"            \
                        ".long 0x4e7a0805 /* movec %%mmusr,%0 */"       \
                        : "=d" (_tmp2)                                  \
                        : "a" (_tmp1));                                 \
  _mmusr = _tmp2;                                                       \
  if (0 /* XXX _mmusr & MMU_?_040 */)                                    \
    (valid) = 0;                                                 \
  else                                                                  \
    {                                                                   \
      (valid) = 1;                                                      \
      (paddr) = _mmusr & ~0xfff;                                        \
    }                                                                   \
}
 
static inline int
cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len)
{
  unsigned long paddr;
  int valid;
 
  switch (scope)
    {
    case FLUSH_SCOPE_ALL:
      switch (cache)
        {
        case FLUSH_CACHE_DATA:
          /* This nop is needed for some broken versions of the 68040.  */
          __asm__ __volatile__ ("nop\n\t"
                                ".word 0xf478 /* cpusha %%dc */");
          break;
        case FLUSH_CACHE_INSN:
          __asm__ __volatile__ ("nop\n\t"
                                ".word 0xf4b8 /* cpusha %%ic */");
          break;
        default:
        case FLUSH_CACHE_BOTH:
          __asm__ __volatile__ ("nop\n\t"
                                ".word 0xf4f8 /* cpusha %%bc */");
          break;
        }
      break;
 
    case FLUSH_SCOPE_LINE:
      len >>= 4;
      for (;;)
        {
          virt_to_phys_040 (addr, paddr, valid);
          if (valid)
            break;
          if (len <= PAGE_SIZE / 16)
            return 0;
          len -= PAGE_SIZE / 16;
          addr += PAGE_SIZE;
        }
      while (len--)
        {
          register unsigned long tmp __asm__ ("a0") = paddr;
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ ("nop\n\t"
                                    ".word 0xf468 /* cpushl %%dc,(%0) */"
                                    : : "a" (tmp));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ ("nop\n\t"
                                    ".word 0xf4a8 /* cpushl %%ic,(%0) */"
                                    : : "a" (tmp));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ ("nop\n\t"
                                    ".word 0xf4e8 /* cpushl %%bc,(%0) */"
                                    : : "a" (paddr));
              break;
            }
          addr += 16;
          if (len)
            {
              if ((addr & (PAGE_SIZE-1)) < 16)
                {
                  /* Recompute physical address when crossing a page
                     boundary. */
                  for (;;)
                    {
                      virt_to_phys_040 (addr, paddr, valid);
                      if (valid)
                        break;
                      if (len <= PAGE_SIZE / 16)
                        return 0;
                      len -= PAGE_SIZE / 16;
                      addr += PAGE_SIZE;
                    }
                }
              else
                paddr += 16;
            }
        }
      break;
 
    default:
    case FLUSH_SCOPE_PAGE:
      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
        {
          register unsigned long tmp __asm__ ("a0");
          virt_to_phys_040 (addr, paddr, valid);
          if (!valid)
            continue;
          tmp = paddr;
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ ("nop\n\t"
                                    ".word 0xf470 /* cpushp %%dc,(%0) */"
                                    : : "a" (tmp));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ ("nop\n\t"
                                    ".word 0xf4b0 /* cpushp %%ic,(%0) */"
                                    : : "a" (tmp));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ ("nop\n\t"
                                    ".word 0xf4f0 /* cpushp %%bc,(%0) */"
                                    : : "a" (tmp));
              break;
            }
        }
      break;
    }
  return 0;
}
 
#define virt_to_phys_060(vaddr, paddr, valid)           \
{                                                       \
  register unsigned long _tmp __asm__ ("a0") = (vaddr); \
                                                        \
  __asm__ __volatile__ (".word 0xf5c8 /* plpar (%1) */" \
                        : "=a" (_tmp)                   \
                        : "0" (_tmp));                   \
  (valid) = 1; /* XXX */                                \
  (paddr) = _tmp;                                       \
}
 
static inline int
cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len)
{
  unsigned long paddr;
  int valid;
 
  switch (scope)
    {
    case FLUSH_SCOPE_ALL:
      switch (cache)
        {
        case FLUSH_CACHE_DATA:
          __asm__ __volatile__ (".word 0xf478 /* cpusha %%dc */\n\t"
                                ".word 0xf458 /* cinva %%dc */");
          break;
        case FLUSH_CACHE_INSN:
          __asm__ __volatile__ (".word 0xf4b8 /* cpusha %%ic */\n\t"
                                ".word 0xf498 /* cinva %%ic */");
          break;
        default:
        case FLUSH_CACHE_BOTH:
          __asm__ __volatile__ (".word 0xf4f8 /* cpusha %%bc */\n\t"
                                ".word 0xf4d8 /* cinva %%bc */");
          break;
        }
      break;
 
    case FLUSH_SCOPE_LINE:
      len >>= 4;
      for (;;)
        {
          virt_to_phys_060 (addr, paddr, valid);
          if (valid)
            break;
          if (len <= PAGE_SIZE / 16)
            return 0;
          len -= PAGE_SIZE / 16;
          addr += PAGE_SIZE;
        }
      while (len--)
        {
          register unsigned long tmp __asm__ ("a0") = paddr;
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ (".word 0xf468 /* cpushl %%dc,(%0) */\n\t"
                                    ".word 0xf448 /* cinv %%dc,(%0) */"
                                    : : "a" (tmp));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ (".word 0xf4a8 /* cpushl %%ic,(%0) */\n\t"
                                    ".word 0xf488 /* cinv %%ic,(%0) */"
                                    : : "a" (tmp));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ (".word 0xf4e8 /* cpushl %%bc,(%0) */\n\t"
                                    ".word 0xf4c8 /* cinv %%bc,(%0) */"
                                    : : "a" (paddr));
              break;
            }
          addr += 16;
          if (len)
            {
              if ((addr & (PAGE_SIZE-1)) < 16)
                {
                  /* Recompute the physical address when crossing a
                     page boundary.  */
                  for (;;)
                    {
                      virt_to_phys_060 (addr, paddr, valid);
                      if (valid)
                        break;
                      if (len <= PAGE_SIZE / 16)
                        return 0;
                      len -= PAGE_SIZE / 16;
                      addr += PAGE_SIZE;
                    }
                }
              else
                paddr += 16;
            }
        }
      break;
 
    default:
    case FLUSH_SCOPE_PAGE:
      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
        {
          register unsigned long tmp __asm__ ("a0");
          virt_to_phys_060 (addr, paddr, valid);
          if (!valid)
            continue;
          tmp = paddr;
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ (".word 0xf470 /* cpushp %%dc,(%0) */\n\t"
                                    ".word 0xf450 /* cinv %%dc,(%0) */"
                                    : : "a" (tmp));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ (".word 0xf4b0 /* cpushp %%ic,(%0) */\n\t"
                                    ".word 0xf490 /* cinv %%ic,(%0) */"
                                    : : "a" (tmp));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ (".word 0xf4f0 /* cpushp %%bc,(%0) */\n\t"
                                    ".word 0xf4d0 /* cinv %%bc,(%0) */"
                                    : : "a" (tmp));
              break;
            }
        }
      break;
    }
  return 0;
}
 
/* sys_cacheflush -- flush (part of) the processor cache.  */
asmlinkage int
sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
{
  struct vm_area_struct *vma;
 
  if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL
      || cache & ~FLUSH_CACHE_BOTH)
    return -EINVAL;
 
  if (scope == FLUSH_SCOPE_ALL)
    {
      /* Only the superuser may flush the whole cache. */
      if (!suser ())
        return -EPERM;
    }
  else
    {
      /* Verify that the specified address region actually belongs to
         this process.  */
      vma = find_vma (current, addr);
      if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end)
        return -EINVAL;
    }
 
  switch (m68k_is040or060)
    {
    default: /* 030 */
      /* Always flush the whole cache, everything else would not be
         worth the hassle.  */
      __asm__ __volatile__
        ("movec %%cacr, %%d0\n\t"
         "or %0, %%d0\n\t"
         "movec %%d0, %%cacr"
         : /* no outputs */
         : "di" ((cache & FLUSH_CACHE_INSN ? 8 : 0)
                 | (cache & FLUSH_CACHE_DATA ? 0x800 : 0))
         : "d0");
      return 0;
 
    case 4: /* 040 */
      return cache_flush_040 (addr, scope, cache, len);
 
    case 6: /* 060 */
      return cache_flush_060 (addr, scope, cache, len);
    }
}

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [m68k/] [kernel/] [sys_m68k.c] - Blame information for rev 1777

Line No.	Rev	Author	Line
1	1623	jcastillo	`/*`
2			`* linux/arch/m68k/kernel/sys_m68k.c`
3			`*`
4			`* This file contains various random system calls that`
5			`* have a non-standard calling sequence on the Linux/m68k`
6			`* platform.`
7			`*/`
8
9			`#include <linux/errno.h>`
10			`#include <linux/sched.h>`
11			`#include <linux/mm.h>`
12			`#include <linux/sem.h>`
13			`#include <linux/msg.h>`
14			`#include <linux/shm.h>`
15			`#include <linux/stat.h>`
16			`#include <linux/mman.h>`
17
18			`#include <asm/segment.h>`
19			`#include <asm/cachectl.h>`
20
21			`/*`
22			`* sys_pipe() is the normal C calling standard for creating`
23			`* a pipe. It's not the way unix traditionally does this, though.`
24			`*/`
25			`asmlinkage int sys_pipe(unsigned long * fildes)`
26			`{`
27			`int fd[2];`
28			`int error;`
29
30			`error = verify_area(VERIFY_WRITE,fildes,8);`
31			`if (error)`
32			`return error;`
33			`error = do_pipe(fd);`
34			`if (error)`
35			`return error;`
36			`put_user(fd[0],0+fildes);`
37			`put_user(fd[1],1+fildes);`
38			`return 0;`
39			`}`
40
41			`/*`
42			`* Perform the select(nd, in, out, ex, tv) and mmap() system`
43			`* calls. Linux/m68k cloned Linux/i386, which didn't use to be able to`
44			`* handle more than 4 system call parameters, so these system calls`
45			`* used a memory block for parameter passing..`
46			`*/`
47
48			`asmlinkage int old_mmap(unsigned long *buffer)`
49			`{`
50			`int error;`
51			`unsigned long flags;`
52			`struct file * file = NULL;`
53
54			`error = verify_area(VERIFY_READ, buffer, 6*sizeof(long));`
55			`if (error)`
56			`return error;`
57			`flags = get_user(buffer+3);`
58			`if (!(flags & MAP_ANONYMOUS)) {`
59			`unsigned long fd = get_user(buffer+4);`
60			`if (fd >= NR_OPEN \|\| !(file = current->files->fd[fd]))`
61			`return -EBADF;`
62			`}`
63			`flags &= ~(MAP_EXECUTABLE \| MAP_DENYWRITE);`
64			`return do_mmap(file, get_user(buffer), get_user(buffer+1),`
65			`get_user(buffer+2), flags, get_user(buffer+5));`
66			`}`
67
68
69			`extern asmlinkage int sys_select(int, fd_set , fd_set , fd_set , struct timeval );`
70
71			`asmlinkage int old_select(unsigned long *buffer)`
72			`{`
73			`int n;`
74			`fd_set *inp;`
75			`fd_set *outp;`
76			`fd_set *exp;`
77			`struct timeval *tvp;`
78
79			`n = verify_area(VERIFY_READ, buffer, 5*sizeof(unsigned long));`
80			`if (n)`
81			`return n;`
82
83			`n = get_user(buffer);`
84			`inp = (fd_set *) get_user(buffer+1);`
85			`outp = (fd_set *) get_user(buffer+2);`
86			`exp = (fd_set *) get_user(buffer+3);`
87			`tvp = (struct timeval *) get_user(buffer+4);`
88			`return sys_select(n, inp, outp, exp, tvp);`
89			`}`
90
91			`/*`
92			`* sys_ipc() is the de-multiplexer for the SysV IPC calls..`
93			`*`
94			`* This is really horribly ugly.`
95			`*/`
96			`asmlinkage int sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)`
97			`{`
98			`int version;`
99
100			`version = call >> 16; /* hack for backward compatibility */`
101			`call &= 0xffff;`
102
103			`if (call <= SEMCTL)`
104			`switch (call) {`
105			`case SEMOP:`
106			`return sys_semop (first, (struct sembuf *)ptr, second);`
107			`case SEMGET:`
108			`return sys_semget (first, second, third);`
109			`case SEMCTL: {`
110			`union semun fourth;`
111			`int err;`
112			`if (!ptr)`
113			`return -EINVAL;`
114			`if ((err = verify_area (VERIFY_READ, ptr, sizeof(long))))`
115			`return err;`
116			`fourth.__pad = get_user((void **)ptr);`
117			`return sys_semctl (first, second, third, fourth);`
118			`}`
119			`default:`
120			`return -EINVAL;`
121			`}`
122			`if (call <= MSGCTL)`
123			`switch (call) {`
124			`case MSGSND:`
125			`return sys_msgsnd (first, (struct msgbuf *) ptr,`
126			`second, third);`
127			`case MSGRCV:`
128			`switch (version) {`
129			`case 0: {`
130			`struct ipc_kludge tmp;`
131			`int err;`
132			`if (!ptr)`
133			`return -EINVAL;`
134			`if ((err = verify_area (VERIFY_READ, ptr, sizeof(tmp))))`
135			`return err;`
136			`memcpy_fromfs (&tmp,(struct ipc_kludge *) ptr,`
137			`sizeof (tmp));`
138			`return sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp, third);`
139			`}`
140			`case 1: default:`
141			`return sys_msgrcv (first, (struct msgbuf *) ptr, second, fifth, third);`
142			`}`
143			`case MSGGET:`
144			`return sys_msgget ((key_t) first, second);`
145			`case MSGCTL:`
146			`return sys_msgctl (first, second, (struct msqid_ds *) ptr);`
147			`default:`
148			`return -EINVAL;`
149			`}`
150			`if (call <= SHMCTL)`
151			`switch (call) {`
152			`case SHMAT:`
153			`switch (version) {`
154			`case 0: default: {`
155			`ulong raddr;`
156			`int err;`
157			`if ((err = verify_area(VERIFY_WRITE, (ulong*) third, sizeof(ulong))))`
158			`return err;`
159			`err = sys_shmat (first, (char *) ptr, second, &raddr);`
160			`if (err)`
161			`return err;`
162			`put_user (raddr, (ulong *) third);`
163			`return 0;`
164			`}`
165			`case 1: /* iBCS2 emulator entry point */`
166			`if (get_fs() != get_ds())`
167			`return -EINVAL;`
168			`return sys_shmat (first, (char ) ptr, second, (ulong ) third);`
169			`}`
170			`case SHMDT:`
171			`return sys_shmdt ((char *)ptr);`
172			`case SHMGET:`
173			`return sys_shmget (first, second, third);`
174			`case SHMCTL:`
175			`return sys_shmctl (first, second, (struct shmid_ds *) ptr);`
176			`default:`
177			`return -EINVAL;`
178			`}`
179			`return -EINVAL;`
180			`}`
181
182			`asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)`
183			`{`
184			`return -ENOSYS;`
185			`}`
186
187			`/* Convert virtual address VADDR to physical address PADDR, recording`
188			`in VALID whether the virtual address is actually mapped. */`
189			`#define virt_to_phys_040(vaddr, paddr, valid) \`
190			`{ \`
191			`register unsigned long _tmp1 __asm__ ("a0") = (vaddr); \`
192			`register unsigned long _tmp2 __asm__ ("d0"); \`
193			`unsigned long _mmusr; \`
194			`\`
195			`__asm__ __volatile__ (".word 0xf568 /* ptestr (%1) */\n\t" \`
196			`".long 0x4e7a0805 /* movec %%mmusr,%0 */" \`
197			`: "=d" (_tmp2) \`
198			`: "a" (_tmp1)); \`
199			`_mmusr = _tmp2; \`
200			`if (0 /* XXX _mmusr & MMU_?_040 */) \`
201			`(valid) = 0; \`
202			`else \`
203			`{ \`
204			`(valid) = 1; \`
205			`(paddr) = _mmusr & ~0xfff; \`
206			`} \`
207			`}`
208
209			`static inline int`
210			`cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len)`
211			`{`
212			`unsigned long paddr;`
213			`int valid;`
214
215			`switch (scope)`
216			`{`
217			`case FLUSH_SCOPE_ALL:`
218			`switch (cache)`
219			`{`
220			`case FLUSH_CACHE_DATA:`
221			`/* This nop is needed for some broken versions of the 68040. */`
222			`__asm__ __volatile__ ("nop\n\t"`
223			`".word 0xf478 /* cpusha %%dc */");`
224			`break;`
225			`case FLUSH_CACHE_INSN:`
226			`__asm__ __volatile__ ("nop\n\t"`
227			`".word 0xf4b8 /* cpusha %%ic */");`
228			`break;`
229			`default:`
230			`case FLUSH_CACHE_BOTH:`
231			`__asm__ __volatile__ ("nop\n\t"`
232			`".word 0xf4f8 /* cpusha %%bc */");`
233			`break;`
234			`}`
235			`break;`
236
237			`case FLUSH_SCOPE_LINE:`
238			`len >>= 4;`
239			`for (;;)`
240			`{`
241			`virt_to_phys_040 (addr, paddr, valid);`
242			`if (valid)`
243			`break;`
244			`if (len <= PAGE_SIZE / 16)`
245			`return 0;`
246			`len -= PAGE_SIZE / 16;`
247			`addr += PAGE_SIZE;`
248			`}`
249			`while (len--)`
250			`{`
251			`register unsigned long tmp __asm__ ("a0") = paddr;`
252			`switch (cache)`
253			`{`
254			`case FLUSH_CACHE_DATA:`
255			`__asm__ __volatile__ ("nop\n\t"`
256			`".word 0xf468 /* cpushl %%dc,(%0) */"`
257			`: : "a" (tmp));`
258			`break;`
259			`case FLUSH_CACHE_INSN:`
260			`__asm__ __volatile__ ("nop\n\t"`
261			`".word 0xf4a8 /* cpushl %%ic,(%0) */"`
262			`: : "a" (tmp));`
263			`break;`
264			`default:`
265			`case FLUSH_CACHE_BOTH:`
266			`__asm__ __volatile__ ("nop\n\t"`
267			`".word 0xf4e8 /* cpushl %%bc,(%0) */"`
268			`: : "a" (paddr));`
269			`break;`
270			`}`
271			`addr += 16;`
272			`if (len)`
273			`{`
274			`if ((addr & (PAGE_SIZE-1)) < 16)`
275			`{`
276			`/* Recompute physical address when crossing a page`
277			`boundary. */`
278			`for (;;)`
279			`{`
280			`virt_to_phys_040 (addr, paddr, valid);`
281			`if (valid)`
282			`break;`
283			`if (len <= PAGE_SIZE / 16)`
284			`return 0;`
285			`len -= PAGE_SIZE / 16;`
286			`addr += PAGE_SIZE;`
287			`}`
288			`}`
289			`else`
290			`paddr += 16;`
291			`}`
292			`}`
293			`break;`
294
295			`default:`
296			`case FLUSH_SCOPE_PAGE:`
297			`for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)`
298			`{`
299			`register unsigned long tmp __asm__ ("a0");`
300			`virt_to_phys_040 (addr, paddr, valid);`
301			`if (!valid)`
302			`continue;`
303			`tmp = paddr;`
304			`switch (cache)`
305			`{`
306			`case FLUSH_CACHE_DATA:`
307			`__asm__ __volatile__ ("nop\n\t"`
308			`".word 0xf470 /* cpushp %%dc,(%0) */"`
309			`: : "a" (tmp));`
310			`break;`
311			`case FLUSH_CACHE_INSN:`
312			`__asm__ __volatile__ ("nop\n\t"`
313			`".word 0xf4b0 /* cpushp %%ic,(%0) */"`
314			`: : "a" (tmp));`
315			`break;`
316			`default:`
317			`case FLUSH_CACHE_BOTH:`
318			`__asm__ __volatile__ ("nop\n\t"`
319			`".word 0xf4f0 /* cpushp %%bc,(%0) */"`
320			`: : "a" (tmp));`
321			`break;`
322			`}`
323			`}`
324			`break;`
325			`}`
326			`return 0;`
327			`}`
328
329			`#define virt_to_phys_060(vaddr, paddr, valid) \`
330			`{ \`
331			`register unsigned long _tmp __asm__ ("a0") = (vaddr); \`
332			`\`
333			`__asm__ __volatile__ (".word 0xf5c8 /* plpar (%1) */" \`
334			`: "=a" (_tmp) \`
335			`: "0" (_tmp)); \`
336			`(valid) = 1; /* XXX */ \`
337			`(paddr) = _tmp; \`
338			`}`
339
340			`static inline int`
341			`cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len)`
342			`{`
343			`unsigned long paddr;`
344			`int valid;`
345
346			`switch (scope)`
347			`{`
348			`case FLUSH_SCOPE_ALL:`
349			`switch (cache)`
350			`{`
351			`case FLUSH_CACHE_DATA:`
352			`__asm__ __volatile__ (".word 0xf478 /* cpusha %%dc */\n\t"`
353			`".word 0xf458 /* cinva %%dc */");`
354			`break;`
355			`case FLUSH_CACHE_INSN:`
356			`__asm__ __volatile__ (".word 0xf4b8 /* cpusha %%ic */\n\t"`
357			`".word 0xf498 /* cinva %%ic */");`
358			`break;`
359			`default:`
360			`case FLUSH_CACHE_BOTH:`
361			`__asm__ __volatile__ (".word 0xf4f8 /* cpusha %%bc */\n\t"`
362			`".word 0xf4d8 /* cinva %%bc */");`
363			`break;`
364			`}`
365			`break;`
366
367			`case FLUSH_SCOPE_LINE:`
368			`len >>= 4;`
369			`for (;;)`
370			`{`
371			`virt_to_phys_060 (addr, paddr, valid);`
372			`if (valid)`
373			`break;`
374			`if (len <= PAGE_SIZE / 16)`
375			`return 0;`
376			`len -= PAGE_SIZE / 16;`
377			`addr += PAGE_SIZE;`
378			`}`
379			`while (len--)`
380			`{`
381			`register unsigned long tmp __asm__ ("a0") = paddr;`
382			`switch (cache)`
383			`{`
384			`case FLUSH_CACHE_DATA:`
385			`__asm__ __volatile__ (".word 0xf468 /* cpushl %%dc,(%0) */\n\t"`
386			`".word 0xf448 /* cinv %%dc,(%0) */"`
387			`: : "a" (tmp));`
388			`break;`
389			`case FLUSH_CACHE_INSN:`
390			`__asm__ __volatile__ (".word 0xf4a8 /* cpushl %%ic,(%0) */\n\t"`
391			`".word 0xf488 /* cinv %%ic,(%0) */"`
392			`: : "a" (tmp));`
393			`break;`
394			`default:`
395			`case FLUSH_CACHE_BOTH:`
396			`__asm__ __volatile__ (".word 0xf4e8 /* cpushl %%bc,(%0) */\n\t"`
397			`".word 0xf4c8 /* cinv %%bc,(%0) */"`
398			`: : "a" (paddr));`
399			`break;`
400			`}`
401			`addr += 16;`
402			`if (len)`
403			`{`
404			`if ((addr & (PAGE_SIZE-1)) < 16)`
405			`{`
406			`/* Recompute the physical address when crossing a`
407			`page boundary. */`
408			`for (;;)`
409			`{`
410			`virt_to_phys_060 (addr, paddr, valid);`
411			`if (valid)`
412			`break;`
413			`if (len <= PAGE_SIZE / 16)`
414			`return 0;`
415			`len -= PAGE_SIZE / 16;`
416			`addr += PAGE_SIZE;`
417			`}`
418			`}`
419			`else`
420			`paddr += 16;`
421			`}`
422			`}`
423			`break;`
424
425			`default:`
426			`case FLUSH_SCOPE_PAGE:`
427			`for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)`
428			`{`
429			`register unsigned long tmp __asm__ ("a0");`
430			`virt_to_phys_060 (addr, paddr, valid);`
431			`if (!valid)`
432			`continue;`
433			`tmp = paddr;`
434			`switch (cache)`
435			`{`
436			`case FLUSH_CACHE_DATA:`
437			`__asm__ __volatile__ (".word 0xf470 /* cpushp %%dc,(%0) */\n\t"`
438			`".word 0xf450 /* cinv %%dc,(%0) */"`
439			`: : "a" (tmp));`
440			`break;`
441			`case FLUSH_CACHE_INSN:`
442			`__asm__ __volatile__ (".word 0xf4b0 /* cpushp %%ic,(%0) */\n\t"`
443			`".word 0xf490 /* cinv %%ic,(%0) */"`
444			`: : "a" (tmp));`
445			`break;`
446			`default:`
447			`case FLUSH_CACHE_BOTH:`
448			`__asm__ __volatile__ (".word 0xf4f0 /* cpushp %%bc,(%0) */\n\t"`
449			`".word 0xf4d0 /* cinv %%bc,(%0) */"`
450			`: : "a" (tmp));`
451			`break;`
452			`}`
453			`}`
454			`break;`
455			`}`
456			`return 0;`
457			`}`
458
459			`/* sys_cacheflush -- flush (part of) the processor cache. */`
460			`asmlinkage int`
461			`sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)`
462			`{`
463			`struct vm_area_struct *vma;`
464
465			`if (scope < FLUSH_SCOPE_LINE \|\| scope > FLUSH_SCOPE_ALL`
466			`\|\| cache & ~FLUSH_CACHE_BOTH)`
467			`return -EINVAL;`
468
469			`if (scope == FLUSH_SCOPE_ALL)`
470			`{`
471			`/* Only the superuser may flush the whole cache. */`
472			`if (!suser ())`
473			`return -EPERM;`
474			`}`
475			`else`
476			`{`
477			`/* Verify that the specified address region actually belongs to`
478			`this process. */`
479			`vma = find_vma (current, addr);`
480			`if (vma == NULL \|\| addr < vma->vm_start \|\| addr + len > vma->vm_end)`
481			`return -EINVAL;`
482			`}`
483
484			`switch (m68k_is040or060)`
485			`{`
486			`default: /* 030 */`
487			`/* Always flush the whole cache, everything else would not be`
488			`worth the hassle. */`
489			`__asm__ __volatile__`
490			`("movec %%cacr, %%d0\n\t"`
491			`"or %0, %%d0\n\t"`
492			`"movec %%d0, %%cacr"`
493			`: /* no outputs */`
494			`: "di" ((cache & FLUSH_CACHE_INSN ? 8 : 0)`
495			`\| (cache & FLUSH_CACHE_DATA ? 0x800 : 0))`
496			`: "d0");`
497			`return 0;`
498
499			`case 4: /* 040 */`
500			`return cache_flush_040 (addr, scope, cache, len);`
501
502			`case 6: /* 060 */`
503			`return cache_flush_060 (addr, scope, cache, len);`
504			`}`
505			`}`