Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
mca.h
Go to the documentation of this file.
1 /*
2  * File: mca.h
3  * Purpose: Machine check handling specific defines
4  *
5  * Copyright (C) 1999, 2004 Silicon Graphics, Inc.
6  * Copyright (C) Vijay Chander <[email protected]>
7  * Copyright (C) Srinivasa Thirumalachar <[email protected]>
8  * Copyright (C) Russ Anderson <[email protected]>
9  */
10 
11 #ifndef _ASM_IA64_MCA_H
12 #define _ASM_IA64_MCA_H
13 
14 #if !defined(__ASSEMBLY__)
15 
16 #include <linux/interrupt.h>
17 #include <linux/types.h>
18 
19 #include <asm/param.h>
20 #include <asm/sal.h>
21 #include <asm/processor.h>
22 #include <asm/mca_asm.h>
23 
24 #define IA64_MCA_RENDEZ_TIMEOUT (20 * 1000) /* value in milliseconds - 20 seconds */
25 
26 typedef struct ia64_fptr {
27  unsigned long fp;
28  unsigned long gp;
29 } ia64_fptr_t;
30 
31 typedef union cmcv_reg_u {
32  u64 cmcv_regval;
33  struct {
34  u64 cmcr_vector : 8;
35  u64 cmcr_reserved1 : 4;
36  u64 cmcr_ignored1 : 1;
37  u64 cmcr_reserved2 : 3;
38  u64 cmcr_mask : 1;
39  u64 cmcr_ignored2 : 47;
40  } cmcv_reg_s;
41 
42 } cmcv_reg_t;
43 
44 #define cmcv_mask cmcv_reg_s.cmcr_mask
45 #define cmcv_vector cmcv_reg_s.cmcr_vector
46 
47 enum {
48  IA64_MCA_RENDEZ_CHECKIN_NOTDONE = 0x0,
49  IA64_MCA_RENDEZ_CHECKIN_DONE = 0x1,
50  IA64_MCA_RENDEZ_CHECKIN_INIT = 0x2,
51  IA64_MCA_RENDEZ_CHECKIN_CONCURRENT_MCA = 0x3,
52 };
53 
54 /* Information maintained by the MC infrastructure */
55 typedef struct ia64_mc_info_s {
56  u64 imi_mca_handler;
57  size_t imi_mca_handler_size;
58  u64 imi_monarch_init_handler;
59  size_t imi_monarch_init_handler_size;
60  u64 imi_slave_init_handler;
61  size_t imi_slave_init_handler_size;
62  u8 imi_rendez_checkin[NR_CPUS];
63 
64 } ia64_mc_info_t;
65 
66 /* Handover state from SAL to OS and vice versa, for both MCA and INIT events.
67  * Besides the handover state, it also contains some saved registers from the
68  * time of the event.
69  * Note: mca_asm.S depends on the precise layout of this structure.
70  */
71 
72 struct ia64_sal_os_state {
73 
74  /* SAL to OS */
75  unsigned long os_gp; /* GP of the os registered with the SAL, physical */
76  unsigned long pal_proc; /* PAL_PROC entry point, physical */
77  unsigned long sal_proc; /* SAL_PROC entry point, physical */
78  unsigned long rv_rc; /* MCA - Rendezvous state, INIT - reason code */
79  unsigned long proc_state_param; /* from R18 */
80  unsigned long monarch; /* 1 for a monarch event, 0 for a slave */
81 
82  /* common */
83  unsigned long sal_ra; /* Return address in SAL, physical */
84  unsigned long sal_gp; /* GP of the SAL - physical */
85  pal_min_state_area_t *pal_min_state; /* from R17. physical in asm, virtual in C */
86  /* Previous values of IA64_KR(CURRENT) and IA64_KR(CURRENT_STACK).
87  * Note: if the MCA/INIT recovery code wants to resume to a new context
88  * then it must change these values to reflect the new kernel stack.
89  */
90  unsigned long prev_IA64_KR_CURRENT; /* previous value of IA64_KR(CURRENT) */
91  unsigned long prev_IA64_KR_CURRENT_STACK;
92  struct task_struct *prev_task; /* previous task, NULL if it is not useful */
93  /* Some interrupt registers are not saved in minstate, pt_regs or
94  * switch_stack. Because MCA/INIT can occur when interrupts are
95  * disabled, we need to save the additional interrupt registers over
96  * MCA/INIT and resume.
97  */
98  unsigned long isr;
99  unsigned long ifa;
100  unsigned long itir;
101  unsigned long iipa;
102  unsigned long iim;
103  unsigned long iha;
104 
105  /* OS to SAL */
106  unsigned long os_status; /* OS status to SAL, enum below */
107  unsigned long context; /* 0 if return to same context
108  1 if return to new context */
109 
110  /* I-resources */
111  unsigned long iip;
112  unsigned long ipsr;
113  unsigned long ifs;
114 };
115 
116 enum {
117  IA64_MCA_CORRECTED = 0x0, /* Error has been corrected by OS_MCA */
118  IA64_MCA_WARM_BOOT = -1, /* Warm boot of the system need from SAL */
119  IA64_MCA_COLD_BOOT = -2, /* Cold boot of the system need from SAL */
120  IA64_MCA_HALT = -3 /* System to be halted by SAL */
121 };
122 
123 enum {
124  IA64_INIT_RESUME = 0x0, /* Resume after return from INIT */
125  IA64_INIT_WARM_BOOT = -1, /* Warm boot of the system need from SAL */
126 };
127 
128 enum {
129  IA64_MCA_SAME_CONTEXT = 0x0, /* SAL to return to same context */
130  IA64_MCA_NEW_CONTEXT = -1 /* SAL to return to new context */
131 };
132 
133 /* Per-CPU MCA state that is too big for normal per-CPU variables. */
134 
135 struct ia64_mca_cpu {
136  u64 mca_stack[KERNEL_STACK_SIZE/8];
137  u64 init_stack[KERNEL_STACK_SIZE/8];
138 };
139 
140 /* Array of physical addresses of each CPU's MCA area. */
141 extern unsigned long __per_cpu_mca[NR_CPUS];
142 
143 extern int cpe_vector;
144 extern int ia64_cpe_irq;
145 extern void ia64_mca_init(void);
146 extern void ia64_mca_cpu_init(void *);
147 extern void ia64_os_mca_dispatch(void);
148 extern void ia64_os_mca_dispatch_end(void);
149 extern void ia64_mca_ucmc_handler(struct pt_regs *, struct ia64_sal_os_state *);
150 extern void ia64_init_handler(struct pt_regs *,
151  struct switch_stack *,
152  struct ia64_sal_os_state *);
153 extern void ia64_os_init_on_kdump(void);
154 extern void ia64_monarch_init_handler(void);
155 extern void ia64_slave_init_handler(void);
156 extern void ia64_mca_cmc_vector_setup(void);
157 extern int ia64_reg_MCA_extension(int (*fn)(void *, struct ia64_sal_os_state *));
158 extern void ia64_unreg_MCA_extension(void);
159 extern unsigned long ia64_get_rnat(unsigned long *);
160 extern void ia64_set_psr_mc(void);
161 extern void ia64_mca_printk(const char * fmt, ...)
162  __attribute__ ((format (printf, 1, 2)));
163 
164 struct ia64_mca_notify_die {
165  struct ia64_sal_os_state *sos;
166  int *monarch_cpu;
167  int *data;
168 };
169 
170 DECLARE_PER_CPU(u64, ia64_mca_pal_base);
171 
172 #else /* __ASSEMBLY__ */
173 
174 #define IA64_MCA_CORRECTED 0x0 /* Error has been corrected by OS_MCA */
175 #define IA64_MCA_WARM_BOOT -1 /* Warm boot of the system need from SAL */
176 #define IA64_MCA_COLD_BOOT -2 /* Cold boot of the system need from SAL */
177 #define IA64_MCA_HALT -3 /* System to be halted by SAL */
178 
179 #define IA64_INIT_RESUME 0x0 /* Resume after return from INIT */
180 #define IA64_INIT_WARM_BOOT -1 /* Warm boot of the system need from SAL */
181 
182 #define IA64_MCA_SAME_CONTEXT 0x0 /* SAL to return to same context */
183 #define IA64_MCA_NEW_CONTEXT -1 /* SAL to return to new context */
184 
185 #endif /* !__ASSEMBLY__ */
186 #endif /* _ASM_IA64_MCA_H */
Generated on Thu Jan 10 2013 13:06:15 for Linux Kernel by   doxygen 1.8.2