088dd1f81b
This allows a PCI controller to shim into IRQ delivery so that DMA queues can be drained, if necessary. If some bus specific code needs to run before an IRQ handler is invoked, the bus driver simply needs to setup the function pointer in bucket->irq_info->pre_handler and the two args bucket->irq_info->pre_handler_arg[12]. The Schizo PCI driver is converted over to use a pre-handler for the DMA write-sync processing it needs when a device is behind a PCI->PCI bus deeper than the top-level APB bridges. While we're here, clean up all of the action allocation and handling. Now, we allocate the irqaction as part of the bucket->irq_info area. There is an array of 4 irqaction (for PCI irq sharing) and a bitmask saying which entries are active. The bucket->irq_info is allocated at build_irq() time, not at request_irq() time. This simplifies request_irq() and free_irq() tremendously. The SMP dynamic IRQ retargetting code got removed in this change too. It was disabled for a few months now, and we can resurrect it in the future if we want. Signed-off-by: David S. Miller <davem@davemloft.net>
239 lines
5.7 KiB
C
239 lines
5.7 KiB
C
/* $Id: signal.h,v 1.9 1999/09/06 08:22:11 jj Exp $ */
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#ifndef _ASMSPARC64_SIGNAL_H
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#define _ASMSPARC64_SIGNAL_H
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#include <asm/sigcontext.h>
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#ifdef __KERNEL__
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#ifndef __ASSEMBLY__
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#include <linux/config.h>
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#include <linux/personality.h>
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#include <linux/types.h>
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#include <linux/compat.h>
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#endif
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#endif
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/* On the Sparc the signal handlers get passed a 'sub-signal' code
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* for certain signal types, which we document here.
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*/
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#define SIGHUP 1
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#define SIGINT 2
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#define SIGQUIT 3
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#define SIGILL 4
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#define SUBSIG_STACK 0
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#define SUBSIG_ILLINST 2
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#define SUBSIG_PRIVINST 3
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#define SUBSIG_BADTRAP(t) (0x80 + (t))
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#define SIGTRAP 5
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#define SIGABRT 6
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#define SIGIOT 6
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#define SIGEMT 7
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#define SUBSIG_TAG 10
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#define SIGFPE 8
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#define SUBSIG_FPDISABLED 0x400
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#define SUBSIG_FPERROR 0x404
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#define SUBSIG_FPINTOVFL 0x001
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#define SUBSIG_FPSTSIG 0x002
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#define SUBSIG_IDIVZERO 0x014
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#define SUBSIG_FPINEXACT 0x0c4
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#define SUBSIG_FPDIVZERO 0x0c8
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#define SUBSIG_FPUNFLOW 0x0cc
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#define SUBSIG_FPOPERROR 0x0d0
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#define SUBSIG_FPOVFLOW 0x0d4
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#define SIGKILL 9
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#define SIGBUS 10
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#define SUBSIG_BUSTIMEOUT 1
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#define SUBSIG_ALIGNMENT 2
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#define SUBSIG_MISCERROR 5
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#define SIGSEGV 11
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#define SUBSIG_NOMAPPING 3
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#define SUBSIG_PROTECTION 4
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#define SUBSIG_SEGERROR 5
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#define SIGSYS 12
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#define SIGPIPE 13
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#define SIGALRM 14
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#define SIGTERM 15
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#define SIGURG 16
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/* SunOS values which deviate from the Linux/i386 ones */
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#define SIGSTOP 17
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#define SIGTSTP 18
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#define SIGCONT 19
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#define SIGCHLD 20
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#define SIGTTIN 21
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#define SIGTTOU 22
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#define SIGIO 23
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#define SIGPOLL SIGIO /* SysV name for SIGIO */
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#define SIGXCPU 24
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#define SIGXFSZ 25
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#define SIGVTALRM 26
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#define SIGPROF 27
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#define SIGWINCH 28
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#define SIGLOST 29
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#define SIGPWR SIGLOST
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#define SIGUSR1 30
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#define SIGUSR2 31
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/* Most things should be clean enough to redefine this at will, if care
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is taken to make libc match. */
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#define __OLD_NSIG 32
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#define __NEW_NSIG 64
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#define _NSIG_BPW 64
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#define _NSIG_WORDS (__NEW_NSIG / _NSIG_BPW)
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#define SIGRTMIN 32
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#define SIGRTMAX __NEW_NSIG
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#if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)
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#define _NSIG __NEW_NSIG
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#define __new_sigset_t sigset_t
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#define __new_sigaction sigaction
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#define __new_sigaction32 sigaction32
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#define __old_sigset_t old_sigset_t
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#define __old_sigaction old_sigaction
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#define __old_sigaction32 old_sigaction32
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#else
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#define _NSIG __OLD_NSIG
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#define NSIG _NSIG
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#define __old_sigset_t sigset_t
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#define __old_sigaction sigaction
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#define __old_sigaction32 sigaction32
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#endif
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#ifndef __ASSEMBLY__
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typedef unsigned long __old_sigset_t; /* at least 32 bits */
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typedef struct {
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unsigned long sig[_NSIG_WORDS];
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} __new_sigset_t;
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/* A SunOS sigstack */
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struct sigstack {
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/* XXX 32-bit pointers pinhead XXX */
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char *the_stack;
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int cur_status;
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};
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/* Sigvec flags */
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#define _SV_SSTACK 1u /* This signal handler should use sig-stack */
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#define _SV_INTR 2u /* Sig return should not restart system call */
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#define _SV_RESET 4u /* Set handler to SIG_DFL upon taken signal */
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#define _SV_IGNCHILD 8u /* Do not send SIGCHLD */
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/*
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* sa_flags values: SA_STACK is not currently supported, but will allow the
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* usage of signal stacks by using the (now obsolete) sa_restorer field in
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* the sigaction structure as a stack pointer. This is now possible due to
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* the changes in signal handling. LBT 010493.
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* SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
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* SA_RESTART flag to get restarting signals (which were the default long ago)
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* SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
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*/
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#define SA_NOCLDSTOP _SV_IGNCHILD
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#define SA_STACK _SV_SSTACK
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#define SA_ONSTACK _SV_SSTACK
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#define SA_RESTART _SV_INTR
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#define SA_ONESHOT _SV_RESET
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#define SA_INTERRUPT 0x10u
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#define SA_NOMASK 0x20u
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#define SA_NOCLDWAIT 0x100u
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#define SA_SIGINFO 0x200u
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#define SIG_BLOCK 0x01 /* for blocking signals */
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#define SIG_UNBLOCK 0x02 /* for unblocking signals */
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#define SIG_SETMASK 0x04 /* for setting the signal mask */
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/*
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* sigaltstack controls
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*/
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#define SS_ONSTACK 1
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#define SS_DISABLE 2
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#define MINSIGSTKSZ 4096
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#define SIGSTKSZ 16384
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#include <asm-generic/signal.h>
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struct __new_sigaction {
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__sighandler_t sa_handler;
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unsigned long sa_flags;
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__sigrestore_t sa_restorer; /* not used by Linux/SPARC yet */
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__new_sigset_t sa_mask;
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};
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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struct __new_sigaction32 {
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unsigned sa_handler;
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unsigned int sa_flags;
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unsigned sa_restorer; /* not used by Linux/SPARC yet */
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compat_sigset_t sa_mask;
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};
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#endif
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struct k_sigaction {
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struct __new_sigaction sa;
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void __user *ka_restorer;
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};
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#endif
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struct __old_sigaction {
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__sighandler_t sa_handler;
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__old_sigset_t sa_mask;
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unsigned long sa_flags;
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void (*sa_restorer)(void); /* not used by Linux/SPARC yet */
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};
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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struct __old_sigaction32 {
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unsigned sa_handler;
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compat_old_sigset_t sa_mask;
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unsigned int sa_flags;
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unsigned sa_restorer; /* not used by Linux/SPARC yet */
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};
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#endif
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#endif
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typedef struct sigaltstack {
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void __user *ss_sp;
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int ss_flags;
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size_t ss_size;
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} stack_t;
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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typedef struct sigaltstack32 {
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u32 ss_sp;
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int ss_flags;
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compat_size_t ss_size;
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} stack_t32;
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#endif
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struct signal_deliver_cookie {
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int restart_syscall;
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unsigned long orig_i0;
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};
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struct pt_regs;
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extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
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#endif /* !(__KERNEL__) */
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#endif /* !(__ASSEMBLY__) */
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#endif /* !(_ASMSPARC64_SIGNAL_H) */
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