1#ifndef __PPCDEBUG_H
2#define __PPCDEBUG_H
3/********************************************************************
4 * Author: Adam Litke, IBM Corp
5 * (c) 2001
6 *
7 * This file contains definitions and macros for a runtime debugging
8 * system for ppc64 (This should also work on 32 bit with a few
9 * adjustments.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 ********************************************************************/
17
18#include <linux/config.h>
19#include <asm/udbg.h>
20#include <stdarg.h>
21
22#define PPCDBG_BITVAL(X)     ((1UL)<<((unsigned long)(X)))
23
24/* Defined below are the bit positions of various debug flags in the
25 * debug_switch variable (defined in naca.h).
26 * -- When adding new values, please enter them into trace names below --
27 *
28 * Values 62 & 63 can be used to stress the hardware page table management
29 * code.  They must be set statically, any attempt to change them dynamically
30 * would be a very bad idea.
31 */
32#define PPCDBG_MMINIT        PPCDBG_BITVAL(0)
33#define PPCDBG_MM            PPCDBG_BITVAL(1)
34#define PPCDBG_SYS32         PPCDBG_BITVAL(2)
35#define PPCDBG_SYS32NI       PPCDBG_BITVAL(3)
36#define PPCDBG_SYS32X	     PPCDBG_BITVAL(4)
37#define PPCDBG_SYS32M	     PPCDBG_BITVAL(5)
38#define PPCDBG_SYS64         PPCDBG_BITVAL(6)
39#define PPCDBG_SYS64NI       PPCDBG_BITVAL(7)
40#define PPCDBG_SYS64X	     PPCDBG_BITVAL(8)
41#define PPCDBG_SIGNAL        PPCDBG_BITVAL(9)
42#define PPCDBG_SIGNALXMON    PPCDBG_BITVAL(10)
43#define PPCDBG_BINFMT32      PPCDBG_BITVAL(11)
44#define PPCDBG_BINFMT64      PPCDBG_BITVAL(12)
45#define PPCDBG_BINFMTXMON    PPCDBG_BITVAL(13)
46#define PPCDBG_BINFMT_32ADDR PPCDBG_BITVAL(14)
47#define PPCDBG_ALIGNFIXUP    PPCDBG_BITVAL(15)
48#define PPCDBG_TCEINIT       PPCDBG_BITVAL(16)
49#define PPCDBG_TCE           PPCDBG_BITVAL(17)
50#define PPCDBG_PHBINIT       PPCDBG_BITVAL(18)
51#define PPCDBG_SMP           PPCDBG_BITVAL(19)
52#define PPCDBG_BOOT          PPCDBG_BITVAL(20)
53#define PPCDBG_BUSWALK       PPCDBG_BITVAL(21)
54#define PPCDBG_PROM	     PPCDBG_BITVAL(22)
55#define PPCDBG_RTAS	     PPCDBG_BITVAL(23)
56#define PPCDBG_HTABSTRESS    PPCDBG_BITVAL(62)
57#define PPCDBG_HTABSIZE      PPCDBG_BITVAL(63)
58#define PPCDBG_NONE          (0UL)
59#define PPCDBG_ALL           (0xffffffffUL)
60
61/* The default initial value for the debug switch */
62#define PPC_DEBUG_DEFAULT    0
63/* #define PPC_DEBUG_DEFAULT    PPCDBG_ALL        */
64
65#define PPCDBG_NUM_FLAGS     64
66
67#ifdef WANT_PPCDBG_TAB
68/* A table of debug switch names to allow name lookup in xmon
69 * (and whoever else wants it.
70 */
71char *trace_names[PPCDBG_NUM_FLAGS] = {
72	/* Known debug names */
73	"mminit", 	"mm",
74	"syscall32", 	"syscall32_ni", "syscall32x",	"syscall32m",
75	"syscall64", 	"syscall64_ni", "syscall64x",
76	"signal",	"signal_xmon",
77	"binfmt32",	"binfmt64",	"binfmt_xmon",	"binfmt_32addr",
78	"alignfixup",   "tceinit",      "tce",          "phb_init",
79	"smp",          "boot",         "buswalk",	"prom",
80	"rtas"
81};
82#else
83extern char *trace_names[64];
84#endif /* WANT_PPCDBG_TAB */
85
86#ifdef CONFIG_PPCDBG
87/* Macro to conditionally print debug based on debug_switch */
88#define PPCDBG(...) udbg_ppcdbg(__VA_ARGS__)
89
90/* Macro to conditionally call a debug routine based on debug_switch */
91#define PPCDBGCALL(FLAGS,FUNCTION) ifppcdebug(FLAGS) FUNCTION
92
93/* Macros to test for debug states */
94#define ifppcdebug(FLAGS) if (udbg_ifdebug(FLAGS))
95#define ppcdebugset(FLAGS) (udbg_ifdebug(FLAGS))
96#define PPCDBG_BINFMT ((current->thread.flags & PPC_FLAG_32BIT) ? PPCDBG_BINFMT32 : PPCDBG_BINFMT64)
97
98#ifdef CONFIG_XMON
99#define PPCDBG_ENTER_DEBUGGER() xmon(0)
100#define PPCDBG_ENTER_DEBUGGER_REGS(X) xmon(X)
101#endif
102#ifdef CONFIG_KDB
103#include <linux/kdb.h>
104#define PPCDBG_ENTER_DEBUGGER() kdb(KDB_REASON_CALL, 0, 0)
105#endif
106
107#else
108#define PPCDBG(...) do {;} while (0)
109#define PPCDBGCALL(FLAGS,FUNCTION) do {;} while (0)
110#define ifppcdebug(...) if (0)
111#define ppcdebugset(FLAGS) (0)
112#endif /* CONFIG_PPCDBG */
113
114#ifndef PPCDBG_ENTER_DEBUGGER
115#define PPCDBG_ENTER_DEBUGGER() do {;} while(0)
116#endif
117
118#ifndef PPCDBG_ENTER_DEBUGGER_REGS
119#define PPCDBG_ENTER_DEBUGGER_REGS(A) do {;} while(0)
120#endif
121
122#endif /*__PPCDEBUG_H */
123