6f73b3629f
Pull powerpc updates from Benjamin Herrenschmidt:
"Here are the powerpc goodies for 3.5. Main highlights are:
- Support for the NX crypto engine in Power7+
- A bunch of Anton goodness, including some micro optimization of our
syscall entry on Power7
- I converted a pile of our thermal control drivers to the new i2c
APIs (essentially turning the old therm_pm72 into a proper set of
windfarm drivers). That's one more step toward removing the
deprecated i2c APIs, there's still a few drivers to fix, but we are
getting close
- kexec/kdump support for 47x embedded cores
The big missing thing here is no updates from Freescale. Not sure
what's up here, but with Kumar not working for them anymore things are
a bit in a state of flux in that area."
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (71 commits)
powerpc: Fix irq distribution
Revert "powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags"
powerpc: Fixing a cputhread code documentation
powerpc/crypto: Enable the PFO-based encryption device
powerpc/crypto: Build files for the nx device driver
powerpc/crypto: debugfs routines and docs for the nx device driver
powerpc/crypto: SHA512 hash routines for nx encryption
powerpc/crypto: SHA256 hash routines for nx encryption
powerpc/crypto: AES-XCBC mode routines for nx encryption
powerpc/crypto: AES-GCM mode routines for nx encryption
powerpc/crypto: AES-ECB mode routines for nx encryption
powerpc/crypto: AES-CTR mode routines for nx encryption
powerpc/crypto: AES-CCM mode routines for nx encryption
powerpc/crypto: AES-CBC mode routines for nx encryption
powerpc/crypto: nx driver code supporting nx encryption
powerpc/pseries: Enable the PFO-based RNG accelerator
powerpc/pseries/hwrng: PFO-based hwrng driver
powerpc/pseries: Add PFO support to the VIO bus
powerpc/pseries: Add pseries update notifier for OFDT prop changes
powerpc/pseries: Add new hvcall constants to support PFO
...
163 lines
5.1 KiB
C
163 lines
5.1 KiB
C
/* thread_info.h: PowerPC low-level thread information
|
|
* adapted from the i386 version by Paul Mackerras
|
|
*
|
|
* Copyright (C) 2002 David Howells (dhowells@redhat.com)
|
|
* - Incorporating suggestions made by Linus Torvalds and Dave Miller
|
|
*/
|
|
|
|
#ifndef _ASM_POWERPC_THREAD_INFO_H
|
|
#define _ASM_POWERPC_THREAD_INFO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
/* We have 8k stacks on ppc32 and 16k on ppc64 */
|
|
|
|
#if defined(CONFIG_PPC64)
|
|
#define THREAD_SHIFT 14
|
|
#elif defined(CONFIG_PPC_256K_PAGES)
|
|
#define THREAD_SHIFT 15
|
|
#else
|
|
#define THREAD_SHIFT 13
|
|
#endif
|
|
|
|
#define THREAD_SIZE (1 << THREAD_SHIFT)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/cache.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/page.h>
|
|
#include <linux/stringify.h>
|
|
|
|
/*
|
|
* low level task data.
|
|
*/
|
|
struct thread_info {
|
|
struct task_struct *task; /* main task structure */
|
|
struct exec_domain *exec_domain; /* execution domain */
|
|
int cpu; /* cpu we're on */
|
|
int preempt_count; /* 0 => preemptable,
|
|
<0 => BUG */
|
|
struct restart_block restart_block;
|
|
unsigned long local_flags; /* private flags for thread */
|
|
|
|
/* low level flags - has atomic operations done on it */
|
|
unsigned long flags ____cacheline_aligned_in_smp;
|
|
};
|
|
|
|
/*
|
|
* macros/functions for gaining access to the thread information structure
|
|
*/
|
|
#define INIT_THREAD_INFO(tsk) \
|
|
{ \
|
|
.task = &tsk, \
|
|
.exec_domain = &default_exec_domain, \
|
|
.cpu = 0, \
|
|
.preempt_count = INIT_PREEMPT_COUNT, \
|
|
.restart_block = { \
|
|
.fn = do_no_restart_syscall, \
|
|
}, \
|
|
.flags = 0, \
|
|
}
|
|
|
|
#define init_thread_info (init_thread_union.thread_info)
|
|
#define init_stack (init_thread_union.stack)
|
|
|
|
#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
|
|
|
|
/* how to get the thread information struct from C */
|
|
static inline struct thread_info *current_thread_info(void)
|
|
{
|
|
register unsigned long sp asm("r1");
|
|
|
|
/* gcc4, at least, is smart enough to turn this into a single
|
|
* rlwinm for ppc32 and clrrdi for ppc64 */
|
|
return (struct thread_info *)(sp & ~(THREAD_SIZE-1));
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#define PREEMPT_ACTIVE 0x10000000
|
|
|
|
/*
|
|
* thread information flag bit numbers
|
|
*/
|
|
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
|
|
#define TIF_SIGPENDING 1 /* signal pending */
|
|
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
|
|
#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling
|
|
TIF_NEED_RESCHED */
|
|
#define TIF_32BIT 4 /* 32 bit binary */
|
|
#define TIF_PERFMON_WORK 5 /* work for pfm_handle_work() */
|
|
#define TIF_PERFMON_CTXSW 6 /* perfmon needs ctxsw calls */
|
|
#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */
|
|
#define TIF_SINGLESTEP 8 /* singlestepping active */
|
|
#define TIF_MEMDIE 9 /* is terminating due to OOM killer */
|
|
#define TIF_SECCOMP 10 /* secure computing */
|
|
#define TIF_RESTOREALL 11 /* Restore all regs (implies NOERROR) */
|
|
#define TIF_NOERROR 12 /* Force successful syscall return */
|
|
#define TIF_NOTIFY_RESUME 13 /* callback before returning to user */
|
|
#define TIF_SYSCALL_TRACEPOINT 15 /* syscall tracepoint instrumentation */
|
|
|
|
/* as above, but as bit values */
|
|
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
|
|
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
|
|
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
|
|
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
|
|
#define _TIF_32BIT (1<<TIF_32BIT)
|
|
#define _TIF_PERFMON_WORK (1<<TIF_PERFMON_WORK)
|
|
#define _TIF_PERFMON_CTXSW (1<<TIF_PERFMON_CTXSW)
|
|
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
|
|
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
|
|
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
|
|
#define _TIF_RESTOREALL (1<<TIF_RESTOREALL)
|
|
#define _TIF_NOERROR (1<<TIF_NOERROR)
|
|
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
|
|
#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
|
|
#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
|
|
_TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT)
|
|
|
|
#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
|
|
_TIF_NOTIFY_RESUME)
|
|
#define _TIF_PERSYSCALL_MASK (_TIF_RESTOREALL|_TIF_NOERROR)
|
|
|
|
/* Bits in local_flags */
|
|
/* Don't move TLF_NAPPING without adjusting the code in entry_32.S */
|
|
#define TLF_NAPPING 0 /* idle thread enabled NAP mode */
|
|
#define TLF_SLEEPING 1 /* suspend code enabled SLEEP mode */
|
|
#define TLF_RESTORE_SIGMASK 2 /* Restore signal mask in do_signal */
|
|
#define TLF_LAZY_MMU 3 /* tlb_batch is active */
|
|
#define TLF_RUNLATCH 4 /* Is the runlatch enabled? */
|
|
|
|
#define _TLF_NAPPING (1 << TLF_NAPPING)
|
|
#define _TLF_SLEEPING (1 << TLF_SLEEPING)
|
|
#define _TLF_RESTORE_SIGMASK (1 << TLF_RESTORE_SIGMASK)
|
|
#define _TLF_LAZY_MMU (1 << TLF_LAZY_MMU)
|
|
#define _TLF_RUNLATCH (1 << TLF_RUNLATCH)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#define HAVE_SET_RESTORE_SIGMASK 1
|
|
static inline void set_restore_sigmask(void)
|
|
{
|
|
struct thread_info *ti = current_thread_info();
|
|
ti->local_flags |= _TLF_RESTORE_SIGMASK;
|
|
set_bit(TIF_SIGPENDING, &ti->flags);
|
|
}
|
|
|
|
static inline bool test_thread_local_flags(unsigned int flags)
|
|
{
|
|
struct thread_info *ti = current_thread_info();
|
|
return (ti->local_flags & flags) != 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#define is_32bit_task() (test_thread_flag(TIF_32BIT))
|
|
#else
|
|
#define is_32bit_task() (1)
|
|
#endif
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _ASM_POWERPC_THREAD_INFO_H */
|