*
* Copyright (c) 2000-2007 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (C) 2000 Stephane Eranian <eranian@hpl.hp.com>
+ * Copyright (C) 2009 Jason Wessel <jason.wessel@windriver.com>
*/
+#ifdef CONFIG_KGDB_KDB
#include <linux/init.h>
#include <linux/sched.h>
#include <asm/atomic.h>
-#ifdef CONFIG_KDB
-/* These are really private, but they must be defined before including
- * asm-$(ARCH)/kdb.h, so make them public and put them here.
- */
-extern int kdb_getuserarea_size(void *, unsigned long, size_t);
-extern int kdb_putuserarea_size(unsigned long, void *, size_t);
-
-#include <asm/kdb.h>
-#endif
-
-#define KDB_MAJOR_VERSION 4
-#define KDB_MINOR_VERSION 4
-#define KDB_TEST_VERSION ""
+#define KDB_POLL_FUNC_MAX 5
+extern int kdb_poll_idx;
/*
* kdb_initial_cpu is initialized to -1, and is set to the cpu
* number whenever the kernel debugger is entered.
*/
-extern volatile int kdb_initial_cpu;
+extern int kdb_initial_cpu;
extern atomic_t kdb_event;
-extern atomic_t kdb_8250;
-#ifdef CONFIG_KDB
-#define KDB_IS_RUNNING() (kdb_initial_cpu != -1)
-#define KDB_8250() (atomic_read(&kdb_8250) != 0)
-#else
-#define KDB_IS_RUNNING() (0)
-#define KDB_8250() (0)
-#endif /* CONFIG_KDB */
-
-/*
- * kdb_on
- *
- * Defines whether kdb is on or not. Default value
- * is set by CONFIG_KDB_OFF. Boot with kdb=on/off/on-nokey
- * or echo "[012]" > /proc/sys/kernel/kdb to change it.
- */
-extern int kdb_on;
-
-#if defined(CONFIG_SERIAL_8250_CONSOLE) || defined(CONFIG_SERIAL_SGI_L1_CONSOLE)
-/*
- * kdb_serial.iobase is initialized to zero, and is set to the I/O
- * address of the serial port when the console is setup in
- * serial_console_setup.
- */
-extern struct kdb_serial {
- int io_type;
- unsigned long iobase;
- unsigned long ioreg_shift;
-} kdb_serial;
-#endif
/*
* kdb_diemsg
*/
extern const char *kdb_diemsg;
-#define KDB_FLAG_EARLYKDB (1 << 0) /* set from boot parameter kdb=early */
-#define KDB_FLAG_CATASTROPHIC (1 << 1) /* A catastrophic event has occurred */
-#define KDB_FLAG_CMD_INTERRUPT (1 << 2) /* Previous command was interrupted */
-#define KDB_FLAG_NOIPI (1 << 3) /* Do not send IPIs */
-#define KDB_FLAG_ONLY_DO_DUMP (1 << 4) /* Only do a dump, used when kdb is off */
-#define KDB_FLAG_NO_CONSOLE (1 << 5) /* No console is available, kdb is disabled */
-#define KDB_FLAG_NO_VT_CONSOLE (1 << 6) /* No VT console is available, do not use keyboard */
-#define KDB_FLAG_NO_I8042 (1 << 7) /* No i8042 chip is available, do not use keyboard */
-#define KDB_FLAG_RECOVERY (1 << 8) /* kdb is being entered for an error which has been recovered */
-
-extern volatile int kdb_flags; /* Global flags, see kdb_state for per cpu state */
+#define KDB_FLAG_EARLYKDB (1 << 0) /* set from boot parameter kdb=early */
+#define KDB_FLAG_CATASTROPHIC (1 << 1) /* A catastrophic event has occurred */
+#define KDB_FLAG_CMD_INTERRUPT (1 << 2) /* Previous command was interrupted */
+#define KDB_FLAG_NOIPI (1 << 3) /* Do not send IPIs */
+#define KDB_FLAG_ONLY_DO_DUMP (1 << 4) /* Only do a dump, used when
+ * kdb is off */
+#define KDB_FLAG_NO_CONSOLE (1 << 5) /* No console is available,
+ * kdb is disabled */
+#define KDB_FLAG_NO_VT_CONSOLE (1 << 6) /* No VT console is available, do
+ * not use keyboard */
+#define KDB_FLAG_NO_I8042 (1 << 7) /* No i8042 chip is available, do
+ * not use keyboard */
+
+extern int kdb_flags; /* Global flags, see kdb_state for per cpu state */
extern void kdb_save_flags(void);
extern void kdb_restore_flags(void);
*/
typedef enum {
- KDB_REASON_ENTER=1, /* KDB_ENTER() trap/fault - regs valid */
- KDB_REASON_ENTER_SLAVE, /* KDB_ENTER_SLAVE() trap/fault - regs valid */
- KDB_REASON_BREAK, /* Breakpoint inst. - regs valid */
- KDB_REASON_DEBUG, /* Debug Fault - regs valid */
- KDB_REASON_OOPS, /* Kernel Oops - regs valid */
- KDB_REASON_SWITCH, /* CPU switch - regs valid*/
- KDB_REASON_KEYBOARD, /* Keyboard entry - regs valid */
- KDB_REASON_NMI, /* Non-maskable interrupt; regs valid */
- KDB_REASON_RECURSE, /* Recursive entry to kdb; regs probably valid */
- KDB_REASON_CPU_UP, /* Add one cpu to kdb; regs invalid */
- KDB_REASON_SILENT, /* Silent entry/exit to kdb; regs invalid - internal only */
+ KDB_REASON_ENTER = 1, /* KDB_ENTER() trap/fault - regs valid */
+ KDB_REASON_ENTER_SLAVE, /* KDB_ENTER_SLAVE() trap/fault - regs valid */
+ KDB_REASON_BREAK, /* Breakpoint inst. - regs valid */
+ KDB_REASON_DEBUG, /* Debug Fault - regs valid */
+ KDB_REASON_OOPS, /* Kernel Oops - regs valid */
+ KDB_REASON_SWITCH, /* CPU switch - regs valid*/
+ KDB_REASON_KEYBOARD, /* Keyboard entry - regs valid */
+ KDB_REASON_NMI, /* Non-maskable interrupt; regs valid */
+ KDB_REASON_RECURSE, /* Recursive entry to kdb;
+ * regs probably valid */
+ KDB_REASON_SSTEP, /* Single Step trap. - regs valid */
} kdb_reason_t;
-#ifdef CONFIG_KDB
-extern int kdb(kdb_reason_t, int, struct pt_regs *);
-#else
-#define kdb(reason,error_code,frame) (0)
-#endif
-
-/* Mainly used by kdb code, but this function is sometimes used
- * by hacked debug code so make it generally available, not private.
- */
-extern void kdb_printf(const char *,...)
+extern int kdb_trap_printk;
+extern int vkdb_printf(const char *fmt, va_list args)
+ __attribute__ ((format (printf, 1, 0)));
+extern int kdb_printf(const char *, ...)
__attribute__ ((format (printf, 1, 2)));
-typedef void (*kdb_printf_t)(const char *, ...)
+typedef int (*kdb_printf_t)(const char *, ...)
__attribute__ ((format (printf, 1, 2)));
-extern void kdb_init(void);
-
-#if defined(CONFIG_SMP)
-/*
- * Kernel debugger non-maskable IPI handler.
- */
-extern int kdb_ipi(struct pt_regs *, void (*ack_interrupt)(void));
-extern void smp_kdb_stop(void);
-#else /* CONFIG_SMP */
-#define smp_kdb_stop()
-#endif /* CONFIG_SMP */
-
-#ifdef CONFIG_KDB_USB
-
-#include <linux/usb.h>
-typedef int (*kdb_hc_keyboard_attach_t)(int i, unsigned int bufsize);
-typedef int (*kdb_hc_keyboard_detach_t)(struct urb *urb, int i);
+extern void kdb_init(int level);
-extern int kdb_usb_keyboard_attach(struct urb *urb, unsigned char *buffer,
- void *poll_func, void *compl_func,
- kdb_hc_keyboard_attach_t kdb_hc_keyboard_attach,
- kdb_hc_keyboard_detach_t kdb_hc_keyboard_detach,
- unsigned int bufsize,
- struct urb *hid_urb);
-
-extern int kdb_usb_keyboard_detach(struct urb *urb);
-
-#endif /* CONFIG_KDB_USB */
+/* Access to kdb specific polling devices */
+typedef int (*get_char_func)(void);
+extern get_char_func kdb_poll_funcs[];
+extern int kdb_get_kbd_char(void);
static inline
int kdb_process_cpu(const struct task_struct *p)
{
unsigned int cpu = task_thread_info(p)->cpu;
- if (cpu > NR_CPUS)
+ if (cpu > num_possible_cpus())
cpu = 0;
return cpu;
}
-extern const char kdb_serial_str[];
-
-#ifdef CONFIG_KDB_KDUMP
-/* Define values for kdb_kdump_state */
-extern int kdb_kdump_state; /* KDB kdump state */
-#define KDB_KDUMP_RESET 0
-#define KDB_KDUMP_KDUMP 1
-
-void kdba_kdump_prepare(struct pt_regs *);
-void machine_crash_shutdown(struct pt_regs *);
-void machine_crash_shutdown_begin(void);
-void machine_crash_shutdown_end(struct pt_regs *);
-
-#endif /* CONFIG_KDB_KDUMP */
-
+/* kdb access to register set for stack dumping */
+extern struct pt_regs *kdb_current_regs;
+
+#else /* ! CONFIG_KGDB_KDB */
+#define kdb_printf(...)
+#define kdb_init(x)
+#endif /* CONFIG_KGDB_KDB */
+enum {
+ KDB_NOT_INITIALIZED,
+ KDB_INIT_EARLY,
+ KDB_INIT_FULL,
+};
#endif /* !_KDB_H */
projects / linux-flexiantxendom0-3.2.10.git / blobdiff