aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-s390/processor.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-s390/processor.h')
-rw-r--r--include/asm-s390/processor.h360
1 files changed, 0 insertions, 360 deletions
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
deleted file mode 100644
index 4af80af2a88f..000000000000
--- a/include/asm-s390/processor.h
+++ /dev/null
@@ -1,360 +0,0 @@
1/*
2 * include/asm-s390/processor.h
3 *
4 * S390 version
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Hartmut Penner (hp@de.ibm.com),
7 * Martin Schwidefsky (schwidefsky@de.ibm.com)
8 *
9 * Derived from "include/asm-i386/processor.h"
10 * Copyright (C) 1994, Linus Torvalds
11 */
12
13#ifndef __ASM_S390_PROCESSOR_H
14#define __ASM_S390_PROCESSOR_H
15
16#include <asm/ptrace.h>
17
18#ifdef __KERNEL__
19/*
20 * Default implementation of macro that returns current
21 * instruction pointer ("program counter").
22 */
23#define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; })
24
25/*
26 * CPU type and hardware bug flags. Kept separately for each CPU.
27 * Members of this structure are referenced in head.S, so think twice
28 * before touching them. [mj]
29 */
30
31typedef struct
32{
33 unsigned int version : 8;
34 unsigned int ident : 24;
35 unsigned int machine : 16;
36 unsigned int unused : 16;
37} __attribute__ ((packed)) cpuid_t;
38
39static inline void get_cpu_id(cpuid_t *ptr)
40{
41 asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
42}
43
44struct cpuinfo_S390
45{
46 cpuid_t cpu_id;
47 __u16 cpu_addr;
48 __u16 cpu_nr;
49 unsigned long loops_per_jiffy;
50 unsigned long *pgd_quick;
51#ifdef __s390x__
52 unsigned long *pmd_quick;
53#endif /* __s390x__ */
54 unsigned long *pte_quick;
55 unsigned long pgtable_cache_sz;
56};
57
58extern void s390_adjust_jiffies(void);
59extern void print_cpu_info(struct cpuinfo_S390 *);
60extern int get_cpu_capability(unsigned int *);
61
62/*
63 * User space process size: 2GB for 31 bit, 4TB for 64 bit.
64 */
65#ifndef __s390x__
66
67#define TASK_SIZE (1UL << 31)
68#define TASK_UNMAPPED_BASE (1UL << 30)
69
70#else /* __s390x__ */
71
72#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk,TIF_31BIT) ? \
73 (1UL << 31) : (1UL << 53))
74#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \
75 (1UL << 30) : (1UL << 41))
76#define TASK_SIZE TASK_SIZE_OF(current)
77
78#endif /* __s390x__ */
79
80#ifdef __KERNEL__
81
82#ifndef __s390x__
83#define STACK_TOP (1UL << 31)
84#define STACK_TOP_MAX (1UL << 31)
85#else /* __s390x__ */
86#define STACK_TOP (1UL << (test_thread_flag(TIF_31BIT) ? 31:42))
87#define STACK_TOP_MAX (1UL << 42)
88#endif /* __s390x__ */
89
90
91#endif
92
93#define HAVE_ARCH_PICK_MMAP_LAYOUT
94
95typedef struct {
96 __u32 ar4;
97} mm_segment_t;
98
99/*
100 * Thread structure
101 */
102struct thread_struct {
103 s390_fp_regs fp_regs;
104 unsigned int acrs[NUM_ACRS];
105 unsigned long ksp; /* kernel stack pointer */
106 mm_segment_t mm_segment;
107 unsigned long prot_addr; /* address of protection-excep. */
108 unsigned int trap_no;
109 per_struct per_info;
110 /* Used to give failing instruction back to user for ieee exceptions */
111 unsigned long ieee_instruction_pointer;
112 /* pfault_wait is used to block the process on a pfault event */
113 unsigned long pfault_wait;
114};
115
116typedef struct thread_struct thread_struct;
117
118/*
119 * Stack layout of a C stack frame.
120 */
121#ifndef __PACK_STACK
122struct stack_frame {
123 unsigned long back_chain;
124 unsigned long empty1[5];
125 unsigned long gprs[10];
126 unsigned int empty2[8];
127};
128#else
129struct stack_frame {
130 unsigned long empty1[5];
131 unsigned int empty2[8];
132 unsigned long gprs[10];
133 unsigned long back_chain;
134};
135#endif
136
137#define ARCH_MIN_TASKALIGN 8
138
139#define INIT_THREAD { \
140 .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \
141}
142
143/*
144 * Do necessary setup to start up a new thread.
145 */
146#define start_thread(regs, new_psw, new_stackp) do { \
147 set_fs(USER_DS); \
148 regs->psw.mask = psw_user_bits; \
149 regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
150 regs->gprs[15] = new_stackp; \
151} while (0)
152
153#define start_thread31(regs, new_psw, new_stackp) do { \
154 set_fs(USER_DS); \
155 regs->psw.mask = psw_user32_bits; \
156 regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
157 regs->gprs[15] = new_stackp; \
158 crst_table_downgrade(current->mm, 1UL << 31); \
159} while (0)
160
161/* Forward declaration, a strange C thing */
162struct task_struct;
163struct mm_struct;
164struct seq_file;
165
166/* Free all resources held by a thread. */
167extern void release_thread(struct task_struct *);
168extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
169
170/* Prepare to copy thread state - unlazy all lazy status */
171#define prepare_to_copy(tsk) do { } while (0)
172
173/*
174 * Return saved PC of a blocked thread.
175 */
176extern unsigned long thread_saved_pc(struct task_struct *t);
177
178/*
179 * Print register of task into buffer. Used in fs/proc/array.c.
180 */
181extern void task_show_regs(struct seq_file *m, struct task_struct *task);
182
183extern void show_code(struct pt_regs *regs);
184
185unsigned long get_wchan(struct task_struct *p);
186#define task_pt_regs(tsk) ((struct pt_regs *) \
187 (task_stack_page(tsk) + THREAD_SIZE) - 1)
188#define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr)
189#define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15])
190
191/*
192 * Give up the time slice of the virtual PU.
193 */
194static inline void cpu_relax(void)
195{
196 if (MACHINE_HAS_DIAG44)
197 asm volatile("diag 0,0,68");
198 barrier();
199}
200
201static inline void psw_set_key(unsigned int key)
202{
203 asm volatile("spka 0(%0)" : : "d" (key));
204}
205
206/*
207 * Set PSW to specified value.
208 */
209static inline void __load_psw(psw_t psw)
210{
211#ifndef __s390x__
212 asm volatile("lpsw 0(%0)" : : "a" (&psw), "m" (psw) : "cc");
213#else
214 asm volatile("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc");
215#endif
216}
217
218/*
219 * Set PSW mask to specified value, while leaving the
220 * PSW addr pointing to the next instruction.
221 */
222
223static inline void __load_psw_mask (unsigned long mask)
224{
225 unsigned long addr;
226 psw_t psw;
227
228 psw.mask = mask;
229
230#ifndef __s390x__
231 asm volatile(
232 " basr %0,0\n"
233 "0: ahi %0,1f-0b\n"
234 " st %0,4(%1)\n"
235 " lpsw 0(%1)\n"
236 "1:"
237 : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
238#else /* __s390x__ */
239 asm volatile(
240 " larl %0,1f\n"
241 " stg %0,8(%1)\n"
242 " lpswe 0(%1)\n"
243 "1:"
244 : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
245#endif /* __s390x__ */
246}
247
248/*
249 * Function to stop a processor until an interruption occurred
250 */
251static inline void enabled_wait(void)
252{
253 __load_psw_mask(PSW_BASE_BITS | PSW_MASK_IO | PSW_MASK_EXT |
254 PSW_MASK_MCHECK | PSW_MASK_WAIT | PSW_DEFAULT_KEY);
255}
256
257/*
258 * Function to drop a processor into disabled wait state
259 */
260
261static inline void disabled_wait(unsigned long code)
262{
263 unsigned long ctl_buf;
264 psw_t dw_psw;
265
266 dw_psw.mask = PSW_BASE_BITS | PSW_MASK_WAIT;
267 dw_psw.addr = code;
268 /*
269 * Store status and then load disabled wait psw,
270 * the processor is dead afterwards
271 */
272#ifndef __s390x__
273 asm volatile(
274 " stctl 0,0,0(%2)\n"
275 " ni 0(%2),0xef\n" /* switch off protection */
276 " lctl 0,0,0(%2)\n"
277 " stpt 0xd8\n" /* store timer */
278 " stckc 0xe0\n" /* store clock comparator */
279 " stpx 0x108\n" /* store prefix register */
280 " stam 0,15,0x120\n" /* store access registers */
281 " std 0,0x160\n" /* store f0 */
282 " std 2,0x168\n" /* store f2 */
283 " std 4,0x170\n" /* store f4 */
284 " std 6,0x178\n" /* store f6 */
285 " stm 0,15,0x180\n" /* store general registers */
286 " stctl 0,15,0x1c0\n" /* store control registers */
287 " oi 0x1c0,0x10\n" /* fake protection bit */
288 " lpsw 0(%1)"
289 : "=m" (ctl_buf)
290 : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc");
291#else /* __s390x__ */
292 asm volatile(
293 " stctg 0,0,0(%2)\n"
294 " ni 4(%2),0xef\n" /* switch off protection */
295 " lctlg 0,0,0(%2)\n"
296 " lghi 1,0x1000\n"
297 " stpt 0x328(1)\n" /* store timer */
298 " stckc 0x330(1)\n" /* store clock comparator */
299 " stpx 0x318(1)\n" /* store prefix register */
300 " stam 0,15,0x340(1)\n"/* store access registers */
301 " stfpc 0x31c(1)\n" /* store fpu control */
302 " std 0,0x200(1)\n" /* store f0 */
303 " std 1,0x208(1)\n" /* store f1 */
304 " std 2,0x210(1)\n" /* store f2 */
305 " std 3,0x218(1)\n" /* store f3 */
306 " std 4,0x220(1)\n" /* store f4 */
307 " std 5,0x228(1)\n" /* store f5 */
308 " std 6,0x230(1)\n" /* store f6 */
309 " std 7,0x238(1)\n" /* store f7 */
310 " std 8,0x240(1)\n" /* store f8 */
311 " std 9,0x248(1)\n" /* store f9 */
312 " std 10,0x250(1)\n" /* store f10 */
313 " std 11,0x258(1)\n" /* store f11 */
314 " std 12,0x260(1)\n" /* store f12 */
315 " std 13,0x268(1)\n" /* store f13 */
316 " std 14,0x270(1)\n" /* store f14 */
317 " std 15,0x278(1)\n" /* store f15 */
318 " stmg 0,15,0x280(1)\n"/* store general registers */
319 " stctg 0,15,0x380(1)\n"/* store control registers */
320 " oi 0x384(1),0x10\n"/* fake protection bit */
321 " lpswe 0(%1)"
322 : "=m" (ctl_buf)
323 : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0");
324#endif /* __s390x__ */
325}
326
327/*
328 * Basic Machine Check/Program Check Handler.
329 */
330
331extern void s390_base_mcck_handler(void);
332extern void s390_base_pgm_handler(void);
333extern void s390_base_ext_handler(void);
334
335extern void (*s390_base_mcck_handler_fn)(void);
336extern void (*s390_base_pgm_handler_fn)(void);
337extern void (*s390_base_ext_handler_fn)(void);
338
339#define ARCH_LOW_ADDRESS_LIMIT 0x7fffffffUL
340
341#endif
342
343/*
344 * Helper macro for exception table entries
345 */
346#ifndef __s390x__
347#define EX_TABLE(_fault,_target) \
348 ".section __ex_table,\"a\"\n" \
349 " .align 4\n" \
350 " .long " #_fault "," #_target "\n" \
351 ".previous\n"
352#else
353#define EX_TABLE(_fault,_target) \
354 ".section __ex_table,\"a\"\n" \
355 " .align 8\n" \
356 " .quad " #_fault "," #_target "\n" \
357 ".previous\n"
358#endif
359
360#endif /* __ASM_S390_PROCESSOR_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 07:28:31 -0500