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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [m68k/] [kernel/] [sys_m68k.c] - Blame information for rev 1765

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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/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/mman.h>
#include <linux/file.h>
#include <linux/utsname.h>
 
#include <asm/setup.h>
#include <asm/uaccess.h>
#include <asm/cachectl.h>
#include <asm/traps.h>
#include <asm/ipc.h>
#include <asm/page.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 = do_pipe(fd);
        if (!error) {
                if (copy_to_user(fildes, fd, 2*sizeof(int)))
                        error = -EFAULT;
        }
        return error;
}
 
/* common code for old and new mmaps */
static inline long do_mmap2(
        unsigned long addr, unsigned long len,
        unsigned long prot, unsigned long flags,
        unsigned long fd, unsigned long pgoff)
{
        int error = -EBADF;
        struct file * file = NULL;
 
        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
        if (!(flags & MAP_ANONYMOUS)) {
                file = fget(fd);
                if (!file)
                        goto out;
        }
 
        down_write(&current->mm->mmap_sem);
        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
        up_write(&current->mm->mmap_sem);
 
        if (file)
                fput(file);
out:
        return error;
}
 
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
        unsigned long prot, unsigned long flags,
        unsigned long fd, unsigned long pgoff)
{
        return do_mmap2(addr, len, prot, flags, fd, pgoff);
}
 
/*
 * 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..
 */
 
struct mmap_arg_struct {
        unsigned long addr;
        unsigned long len;
        unsigned long prot;
        unsigned long flags;
        unsigned long fd;
        unsigned long offset;
};
 
asmlinkage int old_mmap(struct mmap_arg_struct *arg)
{
        struct mmap_arg_struct a;
        int error = -EFAULT;
 
        if (copy_from_user(&a, arg, sizeof(a)))
                goto out;
 
        error = -EINVAL;
        if (a.offset & ~PAGE_MASK)
                goto out;
 
        a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 
        error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
out:
        return error;
}
 
#if 0
struct mmap_arg_struct64 {
        __u32 addr;
        __u32 len;
        __u32 prot;
        __u32 flags;
        __u64 offset; /* 64 bits */
        __u32 fd;
};
 
asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg)
{
        int error = -EFAULT;
        struct file * file = NULL;
        struct mmap_arg_struct64 a;
        unsigned long pgoff;
 
        if (copy_from_user(&a, arg, sizeof(a)))
                return -EFAULT;
 
        if ((long)a.offset & ~PAGE_MASK)
                return -EINVAL;
 
        pgoff = a.offset >> PAGE_SHIFT;
        if ((a.offset >> PAGE_SHIFT) != pgoff)
                return -EINVAL;
 
        if (!(a.flags & MAP_ANONYMOUS)) {
                error = -EBADF;
                file = fget(a.fd);
                if (!file)
                        goto out;
        }
        a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 
        down_write(&current->mm->mmap_sem);
        error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff);
        up_write(&current->mm->mmap_sem);
        if (file)
                fput(file);
out:
        return error;
}
#endif
 
extern asmlinkage int sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
 
struct sel_arg_struct {
        unsigned long n;
        fd_set *inp, *outp, *exp;
        struct timeval *tvp;
};
 
asmlinkage int old_select(struct sel_arg_struct *arg)
{
        struct sel_arg_struct a;
 
        if (copy_from_user(&a, arg, sizeof(a)))
                return -EFAULT;
        /* sys_select() does the appropriate kernel locking */
        return sys_select(a.n, a.inp, a.outp, a.exp, a.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, ret;
 
        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;
                        if (!ptr)
                                return -EINVAL;
                        if (get_user(fourth.__pad, (void **) ptr))
                                return -EFAULT;
                        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;
                                if (!ptr)
                                        return -EINVAL;
                                if (copy_from_user (&tmp,
                                                    (struct ipc_kludge *)ptr,
                                                    sizeof (tmp)))
                                        return -EFAULT;
                                return sys_msgrcv (first, tmp.msgp, second,
                                                   tmp.msgtyp, third);
                                }
                        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) {
                        default: {
                                ulong raddr;
                                ret = sys_shmat (first, (char *) ptr,
                                                 second, &raddr);
                                if (ret)
                                        return ret;
                                return put_user (raddr, (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 (user) address VADDR to physical address PADDR */
#define virt_to_phys_040(vaddr)                                         \
({                                                                      \
  unsigned long _mmusr, _paddr;                                         \
                                                                        \
  __asm__ __volatile__ (".chip 68040\n\t"                               \
                        "ptestr (%1)\n\t"                               \
                        "movec %%mmusr,%0\n\t"                          \
                        ".chip 68k"                                     \
                        : "=r" (_mmusr)                                 \
                        : "a" (vaddr));                                 \
  _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0;              \
  _paddr;                                                               \
})
 
static inline int
cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len)
{
  unsigned long paddr, i;
 
  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"
                                ".chip 68040\n\t"
                                "cpusha %dc\n\t"
                                ".chip 68k");
          break;
        case FLUSH_CACHE_INSN:
          __asm__ __volatile__ ("nop\n\t"
                                ".chip 68040\n\t"
                                "cpusha %ic\n\t"
                                ".chip 68k");
          break;
        default:
        case FLUSH_CACHE_BOTH:
          __asm__ __volatile__ ("nop\n\t"
                                ".chip 68040\n\t"
                                "cpusha %bc\n\t"
                                ".chip 68k");
          break;
        }
      break;
 
    case FLUSH_SCOPE_LINE:
      /* Find the physical address of the first mapped page in the
         address range.  */
      if ((paddr = virt_to_phys_040(addr))) {
        paddr += addr & ~(PAGE_MASK | 15);
        len = (len + (addr & 15) + 15) >> 4;
      } else {
        unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);
 
        if (len <= tmp)
          return 0;
        addr += tmp;
        len -= tmp;
        tmp = PAGE_SIZE;
        for (;;)
          {
            if ((paddr = virt_to_phys_040(addr)))
              break;
            if (len <= tmp)
              return 0;
            addr += tmp;
            len -= tmp;
          }
        len = (len + 15) >> 4;
      }
      i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;
      while (len--)
        {
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ ("nop\n\t"
                                    ".chip 68040\n\t"
                                    "cpushl %%dc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ ("nop\n\t"
                                    ".chip 68040\n\t"
                                    "cpushl %%ic,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ ("nop\n\t"
                                    ".chip 68040\n\t"
                                    "cpushl %%bc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            }
          if (!--i && len)
            {
              /*
               * No need to page align here since it is done by
               * virt_to_phys_040().
               */
              addr += PAGE_SIZE;
              i = PAGE_SIZE / 16;
              /* Recompute physical address when crossing a page
                 boundary. */
              for (;;)
                {
                  if ((paddr = virt_to_phys_040(addr)))
                    break;
                  if (len <= i)
                    return 0;
                  len -= i;
                  addr += PAGE_SIZE;
                }
            }
          else
            paddr += 16;
        }
      break;
 
    default:
    case FLUSH_SCOPE_PAGE:
      len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);
      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
        {
          if (!(paddr = virt_to_phys_040(addr)))
            continue;
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ ("nop\n\t"
                                    ".chip 68040\n\t"
                                    "cpushp %%dc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ ("nop\n\t"
                                    ".chip 68040\n\t"
                                    "cpushp %%ic,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ ("nop\n\t"
                                    ".chip 68040\n\t"
                                    "cpushp %%bc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            }
        }
      break;
    }
  return 0;
}
 
#define virt_to_phys_060(vaddr)                         \
({                                                      \
  unsigned long paddr;                                  \
  __asm__ __volatile__ (".chip 68060\n\t"               \
                        "plpar (%0)\n\t"                \
                        ".chip 68k"                     \
                        : "=a" (paddr)                  \
                        : "0" (vaddr));                  \
  (paddr); /* XXX */                                    \
})
 
static inline int
cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len)
{
  unsigned long paddr, i;
 
  /*
   * 68060 manual says:
   *  cpush %dc : flush DC, remains valid (with our %cacr setup)
   *  cpush %ic : invalidate IC
   *  cpush %bc : flush DC + invalidate IC
   */
  switch (scope)
    {
    case FLUSH_SCOPE_ALL:
      switch (cache)
        {
        case FLUSH_CACHE_DATA:
          __asm__ __volatile__ (".chip 68060\n\t"
                                "cpusha %dc\n\t"
                                ".chip 68k");
          break;
        case FLUSH_CACHE_INSN:
          __asm__ __volatile__ (".chip 68060\n\t"
                                "cpusha %ic\n\t"
                                ".chip 68k");
          break;
        default:
        case FLUSH_CACHE_BOTH:
          __asm__ __volatile__ (".chip 68060\n\t"
                                "cpusha %bc\n\t"
                                ".chip 68k");
          break;
        }
      break;
 
    case FLUSH_SCOPE_LINE:
      /* Find the physical address of the first mapped page in the
         address range.  */
      len += addr & 15;
      addr &= -16;
      if (!(paddr = virt_to_phys_060(addr))) {
        unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);
 
        if (len <= tmp)
          return 0;
        addr += tmp;
        len -= tmp;
        tmp = PAGE_SIZE;
        for (;;)
          {
            if ((paddr = virt_to_phys_060(addr)))
              break;
            if (len <= tmp)
              return 0;
            addr += tmp;
            len -= tmp;
          }
      }
      len = (len + 15) >> 4;
      i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;
      while (len--)
        {
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ (".chip 68060\n\t"
                                    "cpushl %%dc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ (".chip 68060\n\t"
                                    "cpushl %%ic,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ (".chip 68060\n\t"
                                    "cpushl %%bc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            }
          if (!--i && len)
            {
 
              /*
               * We just want to jump to the first cache line
               * in the next page.
               */
              addr += PAGE_SIZE;
              addr &= PAGE_MASK;
 
              i = PAGE_SIZE / 16;
              /* Recompute physical address when crossing a page
                 boundary. */
              for (;;)
                {
                  if ((paddr = virt_to_phys_060(addr)))
                    break;
                  if (len <= i)
                    return 0;
                  len -= i;
                  addr += PAGE_SIZE;
                }
            }
          else
            paddr += 16;
        }
      break;
 
    default:
    case FLUSH_SCOPE_PAGE:
      len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);
      addr &= PAGE_MASK;        /* Workaround for bug in some
                                   revisions of the 68060 */
      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
        {
          if (!(paddr = virt_to_phys_060(addr)))
            continue;
          switch (cache)
            {
            case FLUSH_CACHE_DATA:
              __asm__ __volatile__ (".chip 68060\n\t"
                                    "cpushp %%dc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            case FLUSH_CACHE_INSN:
              __asm__ __volatile__ (".chip 68060\n\t"
                                    "cpushp %%ic,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              break;
            default:
            case FLUSH_CACHE_BOTH:
              __asm__ __volatile__ (".chip 68060\n\t"
                                    "cpushp %%bc,(%0)\n\t"
                                    ".chip 68k"
                                    : : "a" (paddr));
              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;
        int ret = -EINVAL;
 
        lock_kernel();
        if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL ||
            cache & ~FLUSH_CACHE_BOTH)
                goto out;
 
        if (scope == FLUSH_SCOPE_ALL) {
                /* Only the superuser may explicitly flush the whole cache. */
                ret = -EPERM;
                if (!capable(CAP_SYS_ADMIN))
                        goto out;
        } else {
                /*
                 * Verify that the specified address region actually belongs
                 * to this process.
                 */
                vma = find_vma (current->mm, addr);
                ret = -EINVAL;
                /* Check for overflow.  */
                if (addr + len < addr)
                        goto out;
                if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end)
                        goto out;
        }
 
        if (CPU_IS_020_OR_030) {
                if (scope == FLUSH_SCOPE_LINE && len < 256) {
                        unsigned long cacr;
                        __asm__ ("movec %%cacr, %0" : "=r" (cacr));
                        if (cache & FLUSH_CACHE_INSN)
                                cacr |= 4;
                        if (cache & FLUSH_CACHE_DATA)
                                cacr |= 0x400;
                        len >>= 2;
                        while (len--) {
                                __asm__ __volatile__ ("movec %1, %%caar\n\t"
                                                      "movec %0, %%cacr"
                                                      : /* no outputs */
                                                      : "r" (cacr), "r" (addr));
                                addr += 4;
                        }
                } else {
                        /* Flush the whole cache, even if page granularity requested. */
                        unsigned long cacr;
                        __asm__ ("movec %%cacr, %0" : "=r" (cacr));
                        if (cache & FLUSH_CACHE_INSN)
                                cacr |= 8;
                        if (cache & FLUSH_CACHE_DATA)
                                cacr |= 0x800;
                        __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr));
                }
                ret = 0;
                goto out;
        } else {
            /*
             * 040 or 060: don't blindly trust 'scope', someone could
             * try to flush a few megs of memory.
             */
 
            if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE)
                scope=FLUSH_SCOPE_PAGE;
            if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL)
                scope=FLUSH_SCOPE_ALL;
            if (CPU_IS_040) {
                ret = cache_flush_040 (addr, scope, cache, len);
            } else if (CPU_IS_060) {
                ret = cache_flush_060 (addr, scope, cache, len);
            }
        }
out:
        unlock_kernel();
        return ret;
}
 
asmlinkage int sys_getpagesize(void)
{
        return PAGE_SIZE;
}
 
/*
 * Old cruft
 */
asmlinkage int sys_pause(void)
{
        current->state = TASK_INTERRUPTIBLE;
        schedule();
        return -ERESTARTNOHAND;
}

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [m68k/] [kernel/] [sys_m68k.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
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/smp.h>`
13			`#include <linux/smp_lock.h>`
14			`#include <linux/sem.h>`
15			`#include <linux/msg.h>`
16			`#include <linux/shm.h>`
17			`#include <linux/stat.h>`
18			`#include <linux/mman.h>`
19			`#include <linux/file.h>`
20			`#include <linux/utsname.h>`
21
22			`#include <asm/setup.h>`
23			`#include <asm/uaccess.h>`
24			`#include <asm/cachectl.h>`
25			`#include <asm/traps.h>`
26			`#include <asm/ipc.h>`
27			`#include <asm/page.h>`
28
29			`/*`
30			`* sys_pipe() is the normal C calling standard for creating`
31			`* a pipe. It's not the way unix traditionally does this, though.`
32			`*/`
33			`asmlinkage int sys_pipe(unsigned long * fildes)`
34			`{`
35			`int fd[2];`
36			`int error;`
37
38			`error = do_pipe(fd);`
39			`if (!error) {`
40			`if (copy_to_user(fildes, fd, 2*sizeof(int)))`
41			`error = -EFAULT;`
42			`}`
43			`return error;`
44			`}`
45
46			`/* common code for old and new mmaps */`
47			`static inline long do_mmap2(`
48			`unsigned long addr, unsigned long len,`
49			`unsigned long prot, unsigned long flags,`
50			`unsigned long fd, unsigned long pgoff)`
51			`{`
52			`int error = -EBADF;`
53			`struct file * file = NULL;`
54
55			`flags &= ~(MAP_EXECUTABLE \| MAP_DENYWRITE);`
56			`if (!(flags & MAP_ANONYMOUS)) {`
57			`file = fget(fd);`
58			`if (!file)`
59			`goto out;`
60			`}`
61
62			`down_write(&current->mm->mmap_sem);`
63			`error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);`
64			`up_write(&current->mm->mmap_sem);`
65
66			`if (file)`
67			`fput(file);`
68			`out:`
69			`return error;`
70			`}`
71
72			`asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,`
73			`unsigned long prot, unsigned long flags,`
74			`unsigned long fd, unsigned long pgoff)`
75			`{`
76			`return do_mmap2(addr, len, prot, flags, fd, pgoff);`
77			`}`
78
79			`/*`
80			`* Perform the select(nd, in, out, ex, tv) and mmap() system`
81			`* calls. Linux/m68k cloned Linux/i386, which didn't use to be able to`
82			`* handle more than 4 system call parameters, so these system calls`
83			`* used a memory block for parameter passing..`
84			`*/`
85
86			`struct mmap_arg_struct {`
87			`unsigned long addr;`
88			`unsigned long len;`
89			`unsigned long prot;`
90			`unsigned long flags;`
91			`unsigned long fd;`
92			`unsigned long offset;`
93			`};`
94
95			`asmlinkage int old_mmap(struct mmap_arg_struct *arg)`
96			`{`
97			`struct mmap_arg_struct a;`
98			`int error = -EFAULT;`
99
100			`if (copy_from_user(&a, arg, sizeof(a)))`
101			`goto out;`
102
103			`error = -EINVAL;`
104			`if (a.offset & ~PAGE_MASK)`
105			`goto out;`
106
107			`a.flags &= ~(MAP_EXECUTABLE \| MAP_DENYWRITE);`
108
109			`error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);`
110			`out:`
111			`return error;`
112			`}`
113
114			`#if 0`
115			`struct mmap_arg_struct64 {`
116			`__u32 addr;`
117			`__u32 len;`
118			`__u32 prot;`
119			`__u32 flags;`
120			`__u64 offset; /* 64 bits */`
121			`__u32 fd;`
122			`};`
123
124			`asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg)`
125			`{`
126			`int error = -EFAULT;`
127			`struct file * file = NULL;`
128			`struct mmap_arg_struct64 a;`
129			`unsigned long pgoff;`
130
131			`if (copy_from_user(&a, arg, sizeof(a)))`
132			`return -EFAULT;`
133
134			`if ((long)a.offset & ~PAGE_MASK)`
135			`return -EINVAL;`
136
137			`pgoff = a.offset >> PAGE_SHIFT;`
138			`if ((a.offset >> PAGE_SHIFT) != pgoff)`
139			`return -EINVAL;`
140
141			`if (!(a.flags & MAP_ANONYMOUS)) {`
142			`error = -EBADF;`
143			`file = fget(a.fd);`
144			`if (!file)`
145			`goto out;`
146			`}`
147			`a.flags &= ~(MAP_EXECUTABLE \| MAP_DENYWRITE);`
148
149			`down_write(&current->mm->mmap_sem);`
150			`error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff);`
151			`up_write(&current->mm->mmap_sem);`
152			`if (file)`
153			`fput(file);`
154			`out:`
155			`return error;`
156			`}`
157			`#endif`
158
159			`extern asmlinkage int sys_select(int, fd_set , fd_set , fd_set , struct timeval );`
160
161			`struct sel_arg_struct {`
162			`unsigned long n;`
163			`fd_set inp, outp, *exp;`
164			`struct timeval *tvp;`
165			`};`
166
167			`asmlinkage int old_select(struct sel_arg_struct *arg)`
168			`{`
169			`struct sel_arg_struct a;`
170
171			`if (copy_from_user(&a, arg, sizeof(a)))`
172			`return -EFAULT;`
173			`/* sys_select() does the appropriate kernel locking */`
174			`return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);`
175			`}`
176
177			`/*`
178			`* sys_ipc() is the de-multiplexer for the SysV IPC calls..`
179			`*`
180			`* This is really horribly ugly.`
181			`*/`
182			`asmlinkage int sys_ipc (uint call, int first, int second,`
183			`int third, void *ptr, long fifth)`
184			`{`
185			`int version, ret;`
186
187			`version = call >> 16; /* hack for backward compatibility */`
188			`call &= 0xffff;`
189
190			`if (call <= SEMCTL)`
191			`switch (call) {`
192			`case SEMOP:`
193			`return sys_semop (first, (struct sembuf *)ptr, second);`
194			`case SEMGET:`
195			`return sys_semget (first, second, third);`
196			`case SEMCTL: {`
197			`union semun fourth;`
198			`if (!ptr)`
199			`return -EINVAL;`
200			`if (get_user(fourth.__pad, (void **) ptr))`
201			`return -EFAULT;`
202			`return sys_semctl (first, second, third, fourth);`
203			`}`
204			`default:`
205			`return -EINVAL;`
206			`}`
207			`if (call <= MSGCTL)`
208			`switch (call) {`
209			`case MSGSND:`
210			`return sys_msgsnd (first, (struct msgbuf *) ptr,`
211			`second, third);`
212			`case MSGRCV:`
213			`switch (version) {`
214			`case 0: {`
215			`struct ipc_kludge tmp;`
216			`if (!ptr)`
217			`return -EINVAL;`
218			`if (copy_from_user (&tmp,`
219			`(struct ipc_kludge *)ptr,`
220			`sizeof (tmp)))`
221			`return -EFAULT;`
222			`return sys_msgrcv (first, tmp.msgp, second,`
223			`tmp.msgtyp, third);`
224			`}`
225			`default:`
226			`return sys_msgrcv (first,`
227			`(struct msgbuf *) ptr,`
228			`second, fifth, third);`
229			`}`
230			`case MSGGET:`
231			`return sys_msgget ((key_t) first, second);`
232			`case MSGCTL:`
233			`return sys_msgctl (first, second,`
234			`(struct msqid_ds *) ptr);`
235			`default:`
236			`return -EINVAL;`
237			`}`
238			`if (call <= SHMCTL)`
239			`switch (call) {`
240			`case SHMAT:`
241			`switch (version) {`
242			`default: {`
243			`ulong raddr;`
244			`ret = sys_shmat (first, (char *) ptr,`
245			`second, &raddr);`
246			`if (ret)`
247			`return ret;`
248			`return put_user (raddr, (ulong *) third);`
249			`}`
250			`}`
251			`case SHMDT:`
252			`return sys_shmdt ((char *)ptr);`
253			`case SHMGET:`
254			`return sys_shmget (first, second, third);`
255			`case SHMCTL:`
256			`return sys_shmctl (first, second,`
257			`(struct shmid_ds *) ptr);`
258			`default:`
259			`return -EINVAL;`
260			`}`
261
262			`return -EINVAL;`
263			`}`
264
265			`asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)`
266			`{`
267			`return -ENOSYS;`
268			`}`
269
270
271			`/* Convert virtual (user) address VADDR to physical address PADDR */`
272			`#define virt_to_phys_040(vaddr) \`
273			`({ \`
274			`unsigned long _mmusr, _paddr; \`
275			`\`
276			`__asm__ __volatile__ (".chip 68040\n\t" \`
277			`"ptestr (%1)\n\t" \`
278			`"movec %%mmusr,%0\n\t" \`
279			`".chip 68k" \`
280			`: "=r" (_mmusr) \`
281			`: "a" (vaddr)); \`
282			`_paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0; \`
283			`_paddr; \`
284			`})`
285
286			`static inline int`
287			`cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len)`
288			`{`
289			`unsigned long paddr, i;`
290
291			`switch (scope)`
292			`{`
293			`case FLUSH_SCOPE_ALL:`
294			`switch (cache)`
295			`{`
296			`case FLUSH_CACHE_DATA:`
297			`/* This nop is needed for some broken versions of the 68040. */`
298			`__asm__ __volatile__ ("nop\n\t"`
299			`".chip 68040\n\t"`
300			`"cpusha %dc\n\t"`
301			`".chip 68k");`
302			`break;`
303			`case FLUSH_CACHE_INSN:`
304			`__asm__ __volatile__ ("nop\n\t"`
305			`".chip 68040\n\t"`
306			`"cpusha %ic\n\t"`
307			`".chip 68k");`
308			`break;`
309			`default:`
310			`case FLUSH_CACHE_BOTH:`
311			`__asm__ __volatile__ ("nop\n\t"`
312			`".chip 68040\n\t"`
313			`"cpusha %bc\n\t"`
314			`".chip 68k");`
315			`break;`
316			`}`
317			`break;`
318
319			`case FLUSH_SCOPE_LINE:`
320			`/* Find the physical address of the first mapped page in the`
321			`address range. */`
322			`if ((paddr = virt_to_phys_040(addr))) {`
323			`paddr += addr & ~(PAGE_MASK \| 15);`
324			`len = (len + (addr & 15) + 15) >> 4;`
325			`} else {`
326			`unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);`
327
328			`if (len <= tmp)`
329			`return 0;`
330			`addr += tmp;`
331			`len -= tmp;`
332			`tmp = PAGE_SIZE;`
333			`for (;;)`
334			`{`
335			`if ((paddr = virt_to_phys_040(addr)))`
336			`break;`
337			`if (len <= tmp)`
338			`return 0;`
339			`addr += tmp;`
340			`len -= tmp;`
341			`}`
342			`len = (len + 15) >> 4;`
343			`}`
344			`i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;`
345			`while (len--)`
346			`{`
347			`switch (cache)`
348			`{`
349			`case FLUSH_CACHE_DATA:`
350			`__asm__ __volatile__ ("nop\n\t"`
351			`".chip 68040\n\t"`
352			`"cpushl %%dc,(%0)\n\t"`
353			`".chip 68k"`
354			`: : "a" (paddr));`
355			`break;`
356			`case FLUSH_CACHE_INSN:`
357			`__asm__ __volatile__ ("nop\n\t"`
358			`".chip 68040\n\t"`
359			`"cpushl %%ic,(%0)\n\t"`
360			`".chip 68k"`
361			`: : "a" (paddr));`
362			`break;`
363			`default:`
364			`case FLUSH_CACHE_BOTH:`
365			`__asm__ __volatile__ ("nop\n\t"`
366			`".chip 68040\n\t"`
367			`"cpushl %%bc,(%0)\n\t"`
368			`".chip 68k"`
369			`: : "a" (paddr));`
370			`break;`
371			`}`
372			`if (!--i && len)`
373			`{`
374			`/*`
375			`* No need to page align here since it is done by`
376			`* virt_to_phys_040().`
377			`*/`
378			`addr += PAGE_SIZE;`
379			`i = PAGE_SIZE / 16;`
380			`/* Recompute physical address when crossing a page`
381			`boundary. */`
382			`for (;;)`
383			`{`
384			`if ((paddr = virt_to_phys_040(addr)))`
385			`break;`
386			`if (len <= i)`
387			`return 0;`
388			`len -= i;`
389			`addr += PAGE_SIZE;`
390			`}`
391			`}`
392			`else`
393			`paddr += 16;`
394			`}`
395			`break;`
396
397			`default:`
398			`case FLUSH_SCOPE_PAGE:`
399			`len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);`
400			`for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)`
401			`{`
402			`if (!(paddr = virt_to_phys_040(addr)))`
403			`continue;`
404			`switch (cache)`
405			`{`
406			`case FLUSH_CACHE_DATA:`
407			`__asm__ __volatile__ ("nop\n\t"`
408			`".chip 68040\n\t"`
409			`"cpushp %%dc,(%0)\n\t"`
410			`".chip 68k"`
411			`: : "a" (paddr));`
412			`break;`
413			`case FLUSH_CACHE_INSN:`
414			`__asm__ __volatile__ ("nop\n\t"`
415			`".chip 68040\n\t"`
416			`"cpushp %%ic,(%0)\n\t"`
417			`".chip 68k"`
418			`: : "a" (paddr));`
419			`break;`
420			`default:`
421			`case FLUSH_CACHE_BOTH:`
422			`__asm__ __volatile__ ("nop\n\t"`
423			`".chip 68040\n\t"`
424			`"cpushp %%bc,(%0)\n\t"`
425			`".chip 68k"`
426			`: : "a" (paddr));`
427			`break;`
428			`}`
429			`}`
430			`break;`
431			`}`
432			`return 0;`
433			`}`
434
435			`#define virt_to_phys_060(vaddr) \`
436			`({ \`
437			`unsigned long paddr; \`
438			`__asm__ __volatile__ (".chip 68060\n\t" \`
439			`"plpar (%0)\n\t" \`
440			`".chip 68k" \`
441			`: "=a" (paddr) \`
442			`: "0" (vaddr)); \`
443			`(paddr); /* XXX */ \`
444			`})`
445
446			`static inline int`
447			`cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len)`
448			`{`
449			`unsigned long paddr, i;`
450
451			`/*`
452			`* 68060 manual says:`
453			`* cpush %dc : flush DC, remains valid (with our %cacr setup)`
454			`* cpush %ic : invalidate IC`
455			`* cpush %bc : flush DC + invalidate IC`
456			`*/`
457			`switch (scope)`
458			`{`
459			`case FLUSH_SCOPE_ALL:`
460			`switch (cache)`
461			`{`
462			`case FLUSH_CACHE_DATA:`
463			`__asm__ __volatile__ (".chip 68060\n\t"`
464			`"cpusha %dc\n\t"`
465			`".chip 68k");`
466			`break;`
467			`case FLUSH_CACHE_INSN:`
468			`__asm__ __volatile__ (".chip 68060\n\t"`
469			`"cpusha %ic\n\t"`
470			`".chip 68k");`
471			`break;`
472			`default:`
473			`case FLUSH_CACHE_BOTH:`
474			`__asm__ __volatile__ (".chip 68060\n\t"`
475			`"cpusha %bc\n\t"`
476			`".chip 68k");`
477			`break;`
478			`}`
479			`break;`
480
481			`case FLUSH_SCOPE_LINE:`
482			`/* Find the physical address of the first mapped page in the`
483			`address range. */`
484			`len += addr & 15;`
485			`addr &= -16;`
486			`if (!(paddr = virt_to_phys_060(addr))) {`
487			`unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);`
488
489			`if (len <= tmp)`
490			`return 0;`
491			`addr += tmp;`
492			`len -= tmp;`
493			`tmp = PAGE_SIZE;`
494			`for (;;)`
495			`{`
496			`if ((paddr = virt_to_phys_060(addr)))`
497			`break;`
498			`if (len <= tmp)`
499			`return 0;`
500			`addr += tmp;`
501			`len -= tmp;`
502			`}`
503			`}`
504			`len = (len + 15) >> 4;`
505			`i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;`
506			`while (len--)`
507			`{`
508			`switch (cache)`
509			`{`
510			`case FLUSH_CACHE_DATA:`
511			`__asm__ __volatile__ (".chip 68060\n\t"`
512			`"cpushl %%dc,(%0)\n\t"`
513			`".chip 68k"`
514			`: : "a" (paddr));`
515			`break;`
516			`case FLUSH_CACHE_INSN:`
517			`__asm__ __volatile__ (".chip 68060\n\t"`
518			`"cpushl %%ic,(%0)\n\t"`
519			`".chip 68k"`
520			`: : "a" (paddr));`
521			`break;`
522			`default:`
523			`case FLUSH_CACHE_BOTH:`
524			`__asm__ __volatile__ (".chip 68060\n\t"`
525			`"cpushl %%bc,(%0)\n\t"`
526			`".chip 68k"`
527			`: : "a" (paddr));`
528			`break;`
529			`}`
530			`if (!--i && len)`
531			`{`
532
533			`/*`
534			`* We just want to jump to the first cache line`
535			`* in the next page.`
536			`*/`
537			`addr += PAGE_SIZE;`
538			`addr &= PAGE_MASK;`
539
540			`i = PAGE_SIZE / 16;`
541			`/* Recompute physical address when crossing a page`
542			`boundary. */`
543			`for (;;)`
544			`{`
545			`if ((paddr = virt_to_phys_060(addr)))`
546			`break;`
547			`if (len <= i)`
548			`return 0;`
549			`len -= i;`
550			`addr += PAGE_SIZE;`
551			`}`
552			`}`
553			`else`
554			`paddr += 16;`
555			`}`
556			`break;`
557
558			`default:`
559			`case FLUSH_SCOPE_PAGE:`
560			`len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);`
561			`addr &= PAGE_MASK; /* Workaround for bug in some`
562			`revisions of the 68060 */`
563			`for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)`
564			`{`
565			`if (!(paddr = virt_to_phys_060(addr)))`
566			`continue;`
567			`switch (cache)`
568			`{`
569			`case FLUSH_CACHE_DATA:`
570			`__asm__ __volatile__ (".chip 68060\n\t"`
571			`"cpushp %%dc,(%0)\n\t"`
572			`".chip 68k"`
573			`: : "a" (paddr));`
574			`break;`
575			`case FLUSH_CACHE_INSN:`
576			`__asm__ __volatile__ (".chip 68060\n\t"`
577			`"cpushp %%ic,(%0)\n\t"`
578			`".chip 68k"`
579			`: : "a" (paddr));`
580			`break;`
581			`default:`
582			`case FLUSH_CACHE_BOTH:`
583			`__asm__ __volatile__ (".chip 68060\n\t"`
584			`"cpushp %%bc,(%0)\n\t"`
585			`".chip 68k"`
586			`: : "a" (paddr));`
587			`break;`
588			`}`
589			`}`
590			`break;`
591			`}`
592			`return 0;`
593			`}`
594
595			`/* sys_cacheflush -- flush (part of) the processor cache. */`
596			`asmlinkage int`
597			`sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)`
598			`{`
599			`struct vm_area_struct *vma;`
600			`int ret = -EINVAL;`
601
602			`lock_kernel();`
603			`if (scope < FLUSH_SCOPE_LINE \|\| scope > FLUSH_SCOPE_ALL \|\|`
604			`cache & ~FLUSH_CACHE_BOTH)`
605			`goto out;`
606
607			`if (scope == FLUSH_SCOPE_ALL) {`
608			`/* Only the superuser may explicitly flush the whole cache. */`
609			`ret = -EPERM;`
610			`if (!capable(CAP_SYS_ADMIN))`
611			`goto out;`
612			`} else {`
613			`/*`
614			`* Verify that the specified address region actually belongs`
615			`* to this process.`
616			`*/`
617			`vma = find_vma (current->mm, addr);`
618			`ret = -EINVAL;`
619			`/* Check for overflow. */`
620			`if (addr + len < addr)`
621			`goto out;`
622			`if (vma == NULL \|\| addr < vma->vm_start \|\| addr + len > vma->vm_end)`
623			`goto out;`
624			`}`
625
626			`if (CPU_IS_020_OR_030) {`
627			`if (scope == FLUSH_SCOPE_LINE && len < 256) {`
628			`unsigned long cacr;`
629			`__asm__ ("movec %%cacr, %0" : "=r" (cacr));`
630			`if (cache & FLUSH_CACHE_INSN)`
631			`cacr \|= 4;`
632			`if (cache & FLUSH_CACHE_DATA)`
633			`cacr \|= 0x400;`
634			`len >>= 2;`
635			`while (len--) {`
636			`__asm__ __volatile__ ("movec %1, %%caar\n\t"`
637			`"movec %0, %%cacr"`
638			`: /* no outputs */`
639			`: "r" (cacr), "r" (addr));`
640			`addr += 4;`
641			`}`
642			`} else {`
643			`/* Flush the whole cache, even if page granularity requested. */`
644			`unsigned long cacr;`
645			`__asm__ ("movec %%cacr, %0" : "=r" (cacr));`
646			`if (cache & FLUSH_CACHE_INSN)`
647			`cacr \|= 8;`
648			`if (cache & FLUSH_CACHE_DATA)`
649			`cacr \|= 0x800;`
650			`__asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr));`
651			`}`
652			`ret = 0;`
653			`goto out;`
654			`} else {`
655			`/*`
656			`* 040 or 060: don't blindly trust 'scope', someone could`
657			`* try to flush a few megs of memory.`
658			`*/`
659
660			`if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE)`
661			`scope=FLUSH_SCOPE_PAGE;`
662			`if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL)`
663			`scope=FLUSH_SCOPE_ALL;`
664			`if (CPU_IS_040) {`
665			`ret = cache_flush_040 (addr, scope, cache, len);`
666			`} else if (CPU_IS_060) {`
667			`ret = cache_flush_060 (addr, scope, cache, len);`
668			`}`
669			`}`
670			`out:`
671			`unlock_kernel();`
672			`return ret;`
673			`}`
674
675			`asmlinkage int sys_getpagesize(void)`
676			`{`
677			`return PAGE_SIZE;`
678			`}`
679
680			`/*`
681			`* Old cruft`
682			`*/`
683			`asmlinkage int sys_pause(void)`
684			`{`
685			`current->state = TASK_INTERRUPTIBLE;`
686			`schedule();`
687			`return -ERESTARTNOHAND;`
688			`}`