diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c b/sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c deleted file mode 100644 index a0349790dc..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c +++ /dev/null @@ -1,250 +0,0 @@ -/* Get frequency of the system processor. sparc64 version. - Copyright (C) 2001-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <ctype.h> -#include <fcntl.h> -#include <string.h> -#include <unistd.h> -#include <dirent.h> -#include <stdlib.h> -#include <inttypes.h> -#include <sys/ioctl.h> -#include <asm/openpromio.h> - -static hp_timing_t -__get_clockfreq_via_cpuinfo (void) -{ - hp_timing_t result; - int fd; - - result = 0; - - fd = __open ("/proc/cpuinfo", O_RDONLY); - if (fd != -1) - { - char buf[8192]; - ssize_t n; - - n = __read (fd, buf, sizeof buf); - if (n > 0) - { - char *mhz = memmem (buf, n, "Cpu0ClkTck", 7); - - if (mhz != NULL) - { - char *endp = buf + n; - - /* Search for the beginning of the string. */ - while (mhz < endp - && (*mhz < '0' || *mhz > '9') - && (*mhz < 'a' || *mhz > 'f') - && *mhz != '\n') - ++mhz; - - while (mhz < endp && *mhz != '\n') - { - if ((*mhz >= '0' && *mhz <= '9') || - (*mhz >= 'a' && *mhz <= 'f')) - { - result <<= 4; - if (*mhz >= '0' && *mhz <= '9') - result += *mhz - '0'; - else - result += (*mhz - 'a') + 10; - } - ++mhz; - } - } - } - - __close (fd); - } - - return result; -} - -static hp_timing_t -__get_clockfreq_via_proc_openprom (void) -{ - hp_timing_t result; - int obp_fd; - - result = 0; - - obp_fd = __open ("/proc/openprom", O_RDONLY); - if (obp_fd != -1) - { - unsigned long int buf[4096 / sizeof (unsigned long int)]; - struct dirent *dirp = (struct dirent *) buf; - ssize_t len; - - while ((len = __getdents (obp_fd, (char *) dirp, sizeof (buf))) > 0) - { - struct dirent *this_dirp = dirp; - - while (len > 0) - { - char node[strlen ("/proc/openprom/") - + _D_ALLOC_NAMLEN (this_dirp) - + strlen ("/clock-frequency")]; - char *prop; - int fd; - - /* Note that - strlen("/clock-frequency") > strlen("/device_type") - */ - __stpcpy (prop = __stpcpy (__stpcpy (node, "/proc/openprom/"), - this_dirp->d_name), - "/device_type"); - fd = __open (node, O_RDONLY); - if (fd != -1) - { - char type_string[128]; - int ret; - - ret = __read (fd, type_string, sizeof (type_string)); - if (ret > 0 && strncmp (type_string, "'cpu'", 5) == 0) - { - int clkfreq_fd; - - __stpcpy (prop, "/clock-frequency"); - clkfreq_fd = __open (node, O_RDONLY); - if (clkfreq_fd != -1) - { - if (__read (clkfreq_fd, type_string, - sizeof (type_string)) > 0) - result = (hp_timing_t) - strtoumax (type_string, NULL, 16); - __close (clkfreq_fd); - } - } - __close (fd); - } - - if (result != 0) - break; - - len -= this_dirp->d_reclen; - this_dirp = (struct dirent *) - ((char *) this_dirp + this_dirp->d_reclen); - } - if (result != 0) - break; - } - __close (obp_fd); - } - - return result; -} - -static void set_obp_int (struct openpromio *op, int val) -{ - char *cp = op->oprom_array; - int *ip = (int *) cp; - - *ip = val; -} - -static int get_obp_int (struct openpromio *op) -{ - char *cp = op->oprom_array; - int *ip = (int *) cp; - - return *ip; -} - -static hp_timing_t -__get_clockfreq_via_dev_openprom (void) -{ - hp_timing_t result; - int obp_dev_fd; - - result = 0; - - obp_dev_fd = __open ("/dev/openprom", O_RDONLY); - if (obp_dev_fd != -1) - { - char obp_buf[8192]; - struct openpromio *obp_cmd = (struct openpromio *)obp_buf; - int ret; - - obp_cmd->oprom_size = - sizeof (obp_buf) - sizeof (unsigned int); - set_obp_int (obp_cmd, 0); - ret = __ioctl (obp_dev_fd, OPROMCHILD, (char *) obp_cmd); - if (ret == 0) - { - int cur_node = get_obp_int (obp_cmd); - - while (cur_node != 0 && cur_node != -1) - { - obp_cmd->oprom_size = sizeof (obp_buf) - sizeof (unsigned int); - strcpy (obp_cmd->oprom_array, "device_type"); - ret = __ioctl (obp_dev_fd, OPROMGETPROP, (char *) obp_cmd); - if (ret == 0 - && strncmp (obp_cmd->oprom_array, "cpu", 3) == 0) - { - obp_cmd->oprom_size = (sizeof (obp_buf) - - sizeof (unsigned int)); - strcpy (obp_cmd->oprom_array, "clock-frequency"); - ret = __ioctl (obp_dev_fd, OPROMGETPROP, (char *) obp_cmd); - if (ret == 0) - result = (hp_timing_t) get_obp_int (obp_cmd); - } - obp_cmd->oprom_size = sizeof (obp_buf) - sizeof (unsigned int); - set_obp_int (obp_cmd, cur_node); - ret = __ioctl (obp_dev_fd, OPROMNEXT, (char *) obp_cmd); - if (ret < 0) - break; - cur_node = get_obp_int (obp_cmd); - } - } - } - - return result; -} - -hp_timing_t -__get_clockfreq (void) -{ - static hp_timing_t result; - - /* If this function was called before, we know the result. */ - if (result != 0) - return result; - - /* We first read the information from the /proc/cpuinfo file. - It contains at least one line like - Cpu0ClkTick : 000000002cb41780 - We search for this line and convert the number in an integer. */ - result = __get_clockfreq_via_cpuinfo (); - if (result != 0) - return result; - - /* If that did not work, try to find an OpenPROM node - with device_type equal to 'cpu' using /dev/openprom - and fetch the clock-frequency property from there. */ - result = __get_clockfreq_via_dev_openprom (); - if (result != 0) - return result; - - /* Finally, try the same lookup as above but using /proc/openprom. */ - result = __get_clockfreq_via_proc_openprom (); - - return result; -} |