diff options
author | Roland McGrath <roland@gnu.org> | 1996-03-19 20:21:54 +0000 |
---|---|---|
committer | Roland McGrath <roland@gnu.org> | 1996-03-19 20:21:54 +0000 |
commit | b20e47cb14ec8edccab7c722743a731e67280702 (patch) | |
tree | 2606832a6d914c9c629494cb47b8a87b1d95f40a /sysdeps/unix/sysv/linux/alpha/ioperm.c | |
parent | e384537164e04d46fe1749899715abd72d33c54e (diff) | |
download | glibc-b20e47cb14ec8edccab7c722743a731e67280702.tar.gz glibc-b20e47cb14ec8edccab7c722743a731e67280702.tar.xz glibc-b20e47cb14ec8edccab7c722743a731e67280702.zip |
Tue Mar 19 14:18:42 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* sysdeps/unix/bsd/pause.c: Moved to sysdeps/unix/common/pause.c. Mon Mar 4 20:17:28 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/adjtime.c: Use INT_MAX instead of LONG_MAX. * sysdeps/unix/sysv/Makefile (sysdep_routines): Don't add s_getdents. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Don't add mount, umount. * sysdeps/alpha/__math.h (atan, cabs): New functions. * sysdeps/unix/sysv/linux/alpha/sigsuspend.S: new file (syscall expects set-value, not pointer to it). Sun Feb 25 22:36:10 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/profil-counter.h: New file. * gmon/gmon.c (__bb_head): new variable. (write_hist, write_call_graph, write_bb_counts): new functions. (_mcleanup): modified to call above functions instead of directly writing out gmon.out. * gmon/sys/gmon.h (struct __bb): New type. (struct gmonhdr): Type removed. (struct gmonparam): New member `log_hashfraction'. (GMONVERSION): Macro removed. * gmon/sys/gmon_out.h, gmon/bb_exit_func.c, sysdeps/generic/bb_init_func.c, sysdeps/alpha/bb_init_func.S: new files. * gmon/Makefile (headers): Add sys/gmon_out.h. (routines): Add bb_init_func, bb_exit_func. * gmon/mcount.c: Avoid integer division. Wed Feb 21 23:56:41 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/alpha/setjmp.S: switched order in which sp and fp are passed to match what __sigsetjmp_aux() expects. Tue Feb 20 11:33:46 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/syscalls.list (select, bind, connect, getpeername, getsockname, listen, recv, recvfrom, recvmsg, send, sendmsg, sendto, setsockopt, shutdown, socketpair): added to override same-name assembly file in the parent directory. * stdlib/stdlib.h: add include of sys/types.h in front of random etc declarations to ensure int32_t is declared. * stdlib/random.c, stdlib/random_r.c: replaced "long int" by int32_t where 32 bit integers are required. Also change LONG_MAX into 0x7fffffff since the intent is to turn off the sign bit in a 32 bit integer. * time/offtime.c (__offtime): Use Paul Eggert's code to deal with very large values for "days" (e.g., 64 bit values). Mon Feb 19 22:22:12 1996 David Mosberger-Tang <davidm@azstarnet.com> * stdlib/stdlib.h (__random, __random_r, random_r, struct random_data): use int32_t instead of `long int'. Sat Feb 17 11:29:29 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/ioperm.c: new file. * sysdeps/alpha/ffs.S: new file. * sysdeps/alpha/fabs.c: File removed. * time/tzfile.c (__tzfile_read): counter variable is i, *not* num_transitions! * time/offtime.c: make capable of dealing with very large (64 bit) time_t values. Use old algorithm until a year is reached that is an integer multiple of 400, then use DAYS_PER_400_YEARS to do the remainder in a single division. * sysdeps/generic/ffs.c (ffs): fix variable declarations to be unsigned int, not unsigned long. * string/test-ffs.c (main): add test case with all upper bits set. * stdlib/tst-strtol.c: add tests cases for machines where sizeof(long)==8. * stdlib/testrand.c (main): disallow rand() to return negative integers. * stdlib/testmb.c (main): fix format to use %lx instead of %x. * stdlib/stdlib.h: on 64 bit machines, declare struct random_data, __random(), __random_r, and random_r to return "int" instead of "long int". * stdlib/random_r.c: 64 bit machines use "int" instead of "long int". Similarly, use INT_MAX instead of LONG_MAX. * stdlib/random.c: on 64 bit machines, randtbl[] and __random[] need to operate on "int" instead of "long int". * locale/locfile-hash.c (compute_hashval): make shifted constant a long to avoid loosing bits on 64 bit machines. * dirent/tst-seekdir.c (main): fix confusing comment; print a line to mark point where directory is rewound. Fri Feb 16 15:01:49 1996 David Mosberger-Tang <davidm@azstarnet.com> * time/strftime.c (strftime): any hour > 11 is PM (not > 12!). Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/Makefile, sysdeps/unix/sysv/linux/alpha/brk.S, sysdeps/unix/sysv/linux/alpha/fpu_control.c, sysdeps/unix/sysv/linux/alpha/fpu_control.h, sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S, sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S, sysdeps/unix/sysv/linux/alpha/pipe.S, sysdeps/unix/sysv/linux/alpha/setfpucw.c, sysdeps/unix/sysv/linux/alpha/sigprocmask.c, sysdeps/unix/sysv/linux/alpha/speed.c, sysdeps/unix/sysv/linux/alpha/start.S, sysdeps/unix/sysv/linux/alpha/syscall.S, sysdeps/unix/sysv/linux/alpha/syscalls.list, sysdeps/unix/sysv/linux/alpha/alpha/regdef.h, sysdeps/unix/sysv/linux/alpha/sysdep.S, sysdeps/unix/sysv/linux/alpha/sysdep.h: New files. * sysdeps/alpha/setjmp_aux.c (__sigsetjmp_aux): restore return address register before returning (gcc 2.7.1 doesn't do it, presumably because $26 is declared as a global variable). * sysdeps/unix/sysv/linux/sys/mman.h: msync was missing "flags" argument. * sysdeps/unix/alarm.c (alarm): do roundup using test & increment instead of multiplication. * sysdeps/posix/sleep.c (sleep): initialize sa_mask to mask of currently blocked signals instead of the empty mask to ensure that execution of alarm handler occurs with none of the currently blocked signals enabled. * sysdeps/unix/alpha/sysdep.h: new file (adapted from OSF/1 version). * sysdeps/unix/bsd/osf/alpha/sysdep.h: include sysdeps/unix/alpha/sysdep.h and removed definitions now in that file. * sysdeps/alpha/divrem.S, sysdeps/alpha/htonl.S, sysdeps/alpha/htons.S, sysdeps/alpha/machine-gmon.h, sysdeps/alpha/_mcount.S, sysdeps/alpha/ntohl.s, sysdeps/alpha/ntohs.s, sysdeps/alpha/strlen.S: New files. * sysdeps/alpha/divl.S, sysdeps/alpha/divlu.S, sysdeps/alpha/divq.S, sysdeps/alpha/divqu.S, sysdeps/alpha/divrem.m4, sysdeps/alpha/macros.m4, sysdeps/alpha/reml.S, sysdeps/alpha/remlu.S, sysdeps/alpha/remq.S, sysdeps/alpha/remqu.S, sysdeps/alpha/strlen.c: Removed. * sysdeps/generic/sbrk.c (__sbrk): argument is of type ptrdiff_t, not int. * sysdeps/alpha/__longjmp.c (__longjmp): moved dummy while loop to end of function to avoid a jump across NOPs. * sysdeps/alpha/Makefile (sysdep_routines): Removed all rules pertaining to integer division/remainder routines since new code doesn't require them. * sunrpc/xdr_mem.c, sunrpc/xdr_stdio.c: Use 4 instead of sizeof(long) where 32 bit quantities are consumed/stored. Various other minor 64-bit cleanups (casting). * sunrpc/xdr.c (xdr_int): test for sizeof(int)==4 to determine whether xdr_long or xdr_short should be used to encode an int. Notice that an xdr_long is 4 bytes independent of the architecture (otherwise no Alpha could interoperate with existing NFS servers, for example). Ditto for enums. * sunrpc/svc_udp.c (svcudp_recv): changed test from 4*sizeof(u_long) to 16 since it really wants 16 bytes. * sunrpc/svc.c (maskp): changed from u_long* to u_int32*. * sunrpc/rpc_cmsg.c (xdr_callmsg), sunrpc/svc_authux.c: increment "buf" pointer by casting it to a char* first since a long* may be 8 bytes or more and oa->oa_length may be any multiple of 4. * sunrpc/rpc/xdr.h (IXDR_GET_LONG, IXDR_PUT_LONG): change casts to u_int32_t (instead of u_long). * sunrpc/clnt_udp.c (clntudp_call): replaced sizeof(u_long) by 4 since it really is testing for 32 bits. Fixed casts to use u_int32 instead of u_long. * sunrpc/xdr_rec.c: Likewise. * sunrpc/clnt_tcp.c (clnttcp_call): replaced u_long by u_int32. * sunrpc/rpc/auth.h: Likewise. * limits.h (LONG_MAX, LONG_MIN, ULONG_MAX): use 64 bit values for Alpha. Tue Mar 19 13:27:49 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * sysdeps/i386/fpu/__math.h: New file. Contributed by John C. Bowman <bowman@hagar.ph.utexas.edu>. Sun Mar 17 00:28:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/posix/clock.c: Don't multiply the return value by CLOCKS_PER_SEC or CLK_TCK. * sysdeps/mach/hurd/getcwd.c: Fail with ENOENT if a parent directory scan finds no match. * posix/unistd.h (setpgrp): Declare no-arg version unless __FAVOR_BSD. * misc/bsd-compat.c (setpgrp): New function, two arg version. * sysdeps/stub/setpgid.c: Remove setpgrp alias. * sysdeps/mach/hurd/setpgid.c: Likewise. * sysdeps/unix/sysv/sysv4/setpgid.c: Likewise. * sysdeps/unix/common/syscalls.list (setpgid): Remove setpgrp alias. * sysdeps/unix/sysv/irix4/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/setpgrp.c: Obsolete file removed. * posix/setpgrp.c (setpgrp): New file. * posix/Makefile (routines): Add setpgrp. Tue Feb 6 12:46:29 1996 David Mosberger-Tang <davidm@azstarnet.com> * libc-symbols.h (weak_alias, weak_symbol): added definitions for ECOFF (HAVE_ECOFF).
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/ioperm.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/ioperm.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/ioperm.c b/sysdeps/unix/sysv/linux/alpha/ioperm.c new file mode 100644 index 0000000000..306c86b96a --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/ioperm.c @@ -0,0 +1,441 @@ +/* Copyright (C) 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by David Mosberger. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* I/O access is restricted to ISA port space (ports 0..65535). +Modern devices hopefully are sane enough not to put any performance +critical registers in i/o space. + +On the first call to ioperm() or _sethae(), the entire (E)ISA port +space is mapped into the virtual address space at address io.base. +mprotect() calls are then used to enable/disable access to ports. Per +page, there are PAGE_SIZE>>IO_SHIFT I/O ports (e.g., 256 ports on a +Low Cost Alpha based system using 8KB pages). + +Keep in mind that this code should be able to run in a 32bit address +space. It is therefore unreasonable to expect mmap'ing the entire +sparse address space would work (e.g., the Low Cost Alpha chip has an +I/O address space that's 512MB large!). */ + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> + +#include <sys/types.h> +#include <sys/mman.h> + +#include <asm/io.h> +#include <asm/page.h> +#include <asm/system.h> + +#undef inb +#undef inw +#undef inl +#undef outb +#undef outw +#undef outl + +#define PATH_CPUINFO "/proc/cpuinfo" + +#define MAX_PORT 0x10000 +#define vuip volatile unsigned int * + +#define JENSEN_IO_BASE (IDENT_ADDR + 0x0300000000UL) +#define APECS_IO_BASE (IDENT_ADDR + 0x01c0000000UL) +#define ALCOR_IO_BASE (IDENT_ADDR + 0x8580000000UL) + +enum { + IOSYS_JENSEN = 0, IOSYS_APECS = 1, IOSYS_ALCOR = 2 +} iosys_t; + +struct ioswtch { + void (*sethae)(unsigned long addr); + void (*outb)(unsigned char b, unsigned long port); + void (*outw)(unsigned short b, unsigned long port); + void (*outl)(unsigned int b, unsigned long port); + unsigned int (*inb)(unsigned long port); + unsigned int (*inw)(unsigned long port); + unsigned int (*inl)(unsigned long port); +}; + +static struct platform { + const char *name; + int io_sys; +} platform[] = { + {"Alcor", IOSYS_ALCOR}, + {"Avanti", IOSYS_APECS}, + {"Cabriolet", IOSYS_APECS}, + {"EB64+", IOSYS_APECS}, + {"EB66", IOSYS_APECS}, + {"EB66P", IOSYS_APECS}, + {"Jensen", IOSYS_JENSEN}, + {"Mustang", IOSYS_APECS}, + {"Noname", IOSYS_APECS}, +}; + + +static struct { + struct hae hae; + unsigned long base; + struct ioswtch * swp; + int sys; +} io; + + +static inline unsigned long +port_to_cpu_addr (unsigned long port, int iosys, int size) +{ + if (iosys == IOSYS_JENSEN) { + return (port << 7) + ((size - 1) << 4) + io.base; + } else { + return (port << 5) + ((size - 1) << 3) + io.base; + } +} + + +static inline void +inline_sethae (unsigned long addr, int iosys) +{ + if (iosys == IOSYS_JENSEN) { + /* hae on the Jensen is bits 31:25 shifted right */ + addr >>= 25; + if (addr != io.hae.cache) { + __sethae (addr); + io.hae.cache = addr; + } + } else { + unsigned long msb; + + /* no need to set hae if msb is 0: */ + msb = addr & 0xf8000000; + if (msb && msb != io.hae.cache) { + __sethae (msb); + io.hae.cache = msb; + } + } +} + + +static inline void +inline_outb (unsigned char b, unsigned long port, int iosys) +{ + unsigned int w; + unsigned long addr = port_to_cpu_addr (port, iosys, 1); + + inline_sethae (0, iosys); + asm ("insbl %2,%1,%0" : "r=" (w) : "ri" (port & 0x3), "r" (b)); + *(vuip)addr = w; + mb (); +} + + +static inline void +inline_outw (unsigned short b, unsigned long port, int iosys) +{ + unsigned int w; + unsigned long addr = port_to_cpu_addr (port, iosys, 2); + + inline_sethae (0, iosys); + asm ("inswl %2,%1,%0" : "r=" (w) : "ri" (port & 0x3), "r" (b)); + *(vuip)addr = w; + mb (); +} + + +static inline void +inline_outl (unsigned int b, unsigned long port, int iosys) +{ + unsigned long addr = port_to_cpu_addr (port, iosys, 4); + + if (port >= MAX_PORT) + return; + + inline_sethae (0, iosys); + *(vuip)addr = b; + mb (); +} + + +static inline unsigned int +inline_inb (unsigned long port, int iosys) +{ + unsigned long result, addr = port_to_cpu_addr (port, iosys, 1); + + inline_sethae (0, iosys); + result = *(vuip) addr; + result >>= (port & 3) * 8; + return 0xffUL & result; +} + + +static inline unsigned int +inline_inw (unsigned long port, int iosys) +{ + unsigned long result, addr = port_to_cpu_addr (port, iosys, 2); + + inline_sethae (0, iosys); + result = *(vuip) addr; + result >>= (port & 3) * 8; + return 0xffffUL & result; +} + + +static inline unsigned int +inline_inl (unsigned long port, int iosys) +{ + unsigned long addr = port_to_cpu_addr (port, iosys, 4); + + inline_sethae (0, iosys); + return *(vuip) addr; +} + + +#define DCL_SETHAE(name, iosys) \ +static void \ +name##_sethae (unsigned long addr) \ +{ \ + inline_sethae (addr, IOSYS_##iosys); \ +} + +#define DCL_OUT(name, func, type, iosys) \ +static void \ +name##_##func (unsigned type b, unsigned long addr) \ +{ \ + inline_##func (b, addr, IOSYS_##iosys); \ +} + + +#define DCL_IN(name, func, iosys) \ +static unsigned int \ +name##_##func (unsigned long addr) \ +{ \ + return inline_##func (addr, IOSYS_##iosys); \ +} + + +DCL_SETHAE(jensen, JENSEN) +DCL_OUT(jensen, outb, char, JENSEN) +DCL_OUT(jensen, outw, short, JENSEN) +DCL_OUT(jensen, outl, int, JENSEN) +DCL_IN(jensen, inb, JENSEN) +DCL_IN(jensen, inw, JENSEN) +DCL_IN(jensen, inl, JENSEN) + +/* The APECS functions are also used for ALCOR since they are + identical. */ + +DCL_SETHAE(apecs, APECS) +DCL_OUT(apecs, outb, char, APECS) +DCL_OUT(apecs, outw, short, APECS) +DCL_OUT(apecs, outl, int, APECS) +DCL_IN(apecs, inb, APECS) +DCL_IN(apecs, inw, APECS) +DCL_IN(apecs, inl, APECS) + +struct ioswtch ioswtch[] = { + { + jensen_sethae, + jensen_outb, jensen_outw, jensen_outl, + jensen_inb, jensen_inw, jensen_inl + }, + { + apecs_sethae, + apecs_outb, apecs_outw, apecs_outl, + apecs_inb, apecs_inw, apecs_inl + } +}; + + +static int +init_iosys (void) +{ + char name[256], value[256]; + FILE * fp; + int i; + + fp = fopen (PATH_CPUINFO, "r"); + if (!fp) + return -1; + + while (fscanf (fp, "%256[^:]: %256[^\n]\n", name, value) == 2) { + if (strncmp (name, "system type", 11) == 0) { + for (i = 0; i < sizeof (platform) / sizeof (platform[0]); ++i) { + if (strcmp (platform[i].name, value) == 0) { + fclose (fp); + io.sys = platform[i].io_sys; + if (io.sys == IOSYS_JENSEN) + io.swp = &ioswtch[0]; + else + io.swp = &ioswtch[1]; + return 0; + } + } + } + } + fclose (fp); + errno = ENODEV; + return -1; +} + + +int +_ioperm (unsigned long from, unsigned long num, int turn_on) +{ + unsigned long addr, len; + int prot; + + if (!io.swp && init_iosys () < 0) + return -1; + + /* this test isn't as silly as it may look like; consider overflows! */ + if (from >= MAX_PORT || from + num > MAX_PORT) { + errno = EINVAL; + return -1; + } + + if (turn_on) { + if (!io.base) { + unsigned long base; + int fd; + + io.hae.reg = 0; /* not used in user-level */ + io.hae.cache = 0; + __sethae (io.hae.cache); /* synchronize with hw */ + + fd = open ("/dev/mem", O_RDWR); + if (fd < 0) + return fd; + + switch (io.sys) { + case IOSYS_JENSEN: base = JENSEN_IO_BASE; break; + case IOSYS_APECS: base = APECS_IO_BASE; break; + case IOSYS_ALCOR: base = ALCOR_IO_BASE; break; + default: + errno = ENODEV; + return -1; + } + addr = port_to_cpu_addr (from, io.sys, 1); + addr &= PAGE_MASK; + len = port_to_cpu_addr (MAX_PORT, io.sys, 1) - addr; + io.base = + (unsigned long) __mmap (0, len, PROT_NONE, MAP_SHARED, fd, base); + close (fd); + if ((long) io.base == -1) + return -1; + } + prot = PROT_READ | PROT_WRITE; + } else { + if (!io.base) + return 0; /* never was turned on... */ + + /* turnoff access to relevant pages: */ + prot = PROT_NONE; + } + addr = port_to_cpu_addr (from, io.sys, 1); + addr &= PAGE_MASK; + len = port_to_cpu_addr (from + num, io.sys, 1) - addr; + return mprotect ((void *) addr, len, prot); +} + + +int +_iopl (unsigned int level) +{ + if (level > 3) { + errno = EINVAL; + return -1; + } + if (level) { + return _ioperm (0, MAX_PORT, 1); + } + return 0; +} + + +void +_sethae (unsigned long addr) +{ + if (!io.swp && init_iosys () < 0) + return; + + io.swp->sethae (addr); +} + + +void +_outb (unsigned char b, unsigned long port) +{ + if (port >= MAX_PORT) + return; + + io.swp->outb (b, port); +} + + +void +_outw (unsigned short b, unsigned long port) +{ + if (port >= MAX_PORT) + return; + + io.swp->outw (b, port); +} + + +void +_outl (unsigned int b, unsigned long port) +{ + if (port >= MAX_PORT) + return; + + io.swp->outl (b, port); +} + + +unsigned int +_inb (unsigned long port) +{ + return io.swp->inb (port); +} + + +unsigned int +_inw (unsigned long port) +{ + return io.swp->inw (port); +} + + +unsigned int +_inl (unsigned long port) +{ + return io.swp->inl (port); +} + + +weak_alias (_sethae, sethae); +weak_alias (_ioperm, ioperm); +weak_alias (_iopl, iopl); +weak_alias (_inb, inb); +weak_alias (_inw, inw); +weak_alias (_inl, inl); +weak_alias (_outb, outb); +weak_alias (_outw, outw); +weak_alias (_outl, outl); |