| Server IP : 172.67.216.182 / Your IP : 162.158.108.161 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-5.15.0-143-generic/arch/powerpc/include/asm/vdso/ |
Upload File : |
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Common timebase prototypes and such for all ppc machines.
*/
#ifndef _ASM_POWERPC_VDSO_TIMEBASE_H
#define _ASM_POWERPC_VDSO_TIMEBASE_H
#include <asm/reg.h>
/*
* We use __powerpc64__ here because we want the compat VDSO to use the 32-bit
* version below in the else case of the ifdef.
*/
#if defined(__powerpc64__) && (defined(CONFIG_PPC_CELL) || defined(CONFIG_E500))
#define mftb() ({unsigned long rval; \
asm volatile( \
"90: mfspr %0, %2;\n" \
ASM_FTR_IFSET( \
"97: cmpwi %0,0;\n" \
" beq- 90b;\n", "", %1) \
: "=r" (rval) \
: "i" (CPU_FTR_CELL_TB_BUG), "i" (SPRN_TBRL) : "cr0"); \
rval;})
#elif defined(CONFIG_PPC_8xx)
#define mftb() ({unsigned long rval; \
asm volatile("mftbl %0" : "=r" (rval)); rval;})
#else
#define mftb() ({unsigned long rval; \
asm volatile("mfspr %0, %1" : \
"=r" (rval) : "i" (SPRN_TBRL)); rval;})
#endif /* !CONFIG_PPC_CELL */
#if defined(CONFIG_PPC_8xx)
#define mftbu() ({unsigned long rval; \
asm volatile("mftbu %0" : "=r" (rval)); rval;})
#else
#define mftbu() ({unsigned long rval; \
asm volatile("mfspr %0, %1" : "=r" (rval) : \
"i" (SPRN_TBRU)); rval;})
#endif
#define mttbl(v) asm volatile("mttbl %0":: "r"(v))
#define mttbu(v) asm volatile("mttbu %0":: "r"(v))
static __always_inline u64 get_tb(void)
{
unsigned int tbhi, tblo, tbhi2;
/*
* We use __powerpc64__ here not CONFIG_PPC64 because we want the compat
* VDSO to use the 32-bit compatible version in the while loop below.
*/
if (__is_defined(__powerpc64__))
return mftb();
do {
tbhi = mftbu();
tblo = mftb();
tbhi2 = mftbu();
} while (tbhi != tbhi2);
return ((u64)tbhi << 32) | tblo;
}
static inline void set_tb(unsigned int upper, unsigned int lower)
{
mtspr(SPRN_TBWL, 0);
mtspr(SPRN_TBWU, upper);
mtspr(SPRN_TBWL, lower);
}
#endif /* _ASM_POWERPC_VDSO_TIMEBASE_H */