Annotation of sys/arch/arm/include/cpu.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: cpu.h,v 1.18 2007/08/14 15:18:07 deraadt Exp $ */
2: /* $NetBSD: cpu.h,v 1.34 2003/06/23 11:01:08 martin Exp $ */
3:
4: /*
5: * Copyright (c) 1994-1996 Mark Brinicombe.
6: * Copyright (c) 1994 Brini.
7: * All rights reserved.
8: *
9: * This code is derived from software written for Brini by Mark Brinicombe
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by Brini.
22: * 4. The name of the company nor the name of the author may be used to
23: * endorse or promote products derived from this software without specific
24: * prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
27: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29: * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
30: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
31: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
32: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * RiscBSD kernel project
39: *
40: * cpu.h
41: *
42: * CPU specific symbols
43: *
44: * Created : 18/09/94
45: *
46: * Based on kate/katelib/arm6.h
47: */
48:
49: #ifndef _ARM_CPU_H_
50: #define _ARM_CPU_H_
51:
52: /*
53: * User-visible definitions
54: */
55:
56: /* CTL_MACHDEP definitions. */
57: #define CPU_DEBUG 1 /* int: misc kernel debug control */
58: #define CPU_BOOTED_DEVICE 2 /* string: device we booted from */
59: #define CPU_BOOTED_KERNEL 3 /* string: kernel we booted */
60: #define CPU_CONSDEV 4 /* struct: dev_t of our console */
61: #define CPU_POWERSAVE 5 /* int: use CPU powersave mode */
62: #define CPU_ALLOWAPERTURE 6 /* int: allow mmap of /dev/xf86 */
63: #define CPU_APMWARN 7 /* APM battery warning percentage */
64: #define CPU_KBDRESET 8 /* int: console keyboard reset */
65: /* 9 formerly int: CPU_ZTSRAWMODE */
66: /* 10 formerly struct: CPU_ZTSSCALE */
67: #define CPU_MAXSPEED 11 /* int: number of valid machdep ids */
68: #define CPU_LIDSUSPEND 12 /* int: closing lid causes suspend */
69: #define CPU_MAXID 13 /* number of valid machdep ids */
70:
71: #define CTL_MACHDEP_NAMES { \
72: { 0, 0 }, \
73: { "debug", CTLTYPE_INT }, \
74: { "booted_device", CTLTYPE_STRING }, \
75: { "booted_kernel", CTLTYPE_STRING }, \
76: { "console_device", CTLTYPE_STRUCT }, \
77: { "powersave", CTLTYPE_INT }, \
78: { "allowaperture", CTLTYPE_INT }, \
79: { "apmwarn", CTLTYPE_INT }, \
80: { "kbdreset", CTLTYPE_INT }, \
81: { 0, 0 }, \
82: { 0, 0 }, \
83: { "maxspeed", CTLTYPE_INT }, \
84: { "lidsuspend", CTLTYPE_INT } \
85: }
86:
87: #ifdef _KERNEL
88:
89: /*
90: * Kernel-only definitions
91: */
92:
93: #include <arm/cpuconf.h>
94:
95: #include <machine/intr.h>
96: #ifndef _LOCORE
97: #if 0
98: #include <sys/user.h>
99: #endif
100: #include <machine/frame.h>
101: #include <machine/pcb.h>
102: #endif /* !_LOCORE */
103:
104: #include <arm/armreg.h>
105:
106: #ifndef _LOCORE
107: /* 1 == use cpu_sleep(), 0 == don't */
108: extern int cpu_do_powersave;
109: #endif
110:
111: #ifdef __PROG32
112: #ifdef _LOCORE
113: #define IRQdisable \
114: stmfd sp!, {r0} ; \
115: mrs r0, cpsr ; \
116: orr r0, r0, #(I32_bit) ; \
117: msr cpsr_c, r0 ; \
118: ldmfd sp!, {r0}
119:
120: #define IRQenable \
121: stmfd sp!, {r0} ; \
122: mrs r0, cpsr ; \
123: bic r0, r0, #(I32_bit) ; \
124: msr cpsr_c, r0 ; \
125: ldmfd sp!, {r0}
126:
127: #else
128: #define IRQdisable __set_cpsr_c(I32_bit, I32_bit);
129: #define IRQenable __set_cpsr_c(I32_bit, 0);
130: #endif /* _LOCORE */
131: #endif
132:
133: #ifndef _LOCORE
134:
135: /* All the CLKF_* macros take a struct clockframe * as an argument. */
136:
137: /*
138: * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the
139: * frame came from USR mode or not.
140: */
141: #ifdef __PROG32
142: #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE)
143: #else
144: #define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR)
145: #endif
146:
147: /*
148: * CLKF_INTR: True if we took the interrupt from inside another
149: * interrupt handler.
150: */
151: extern int current_intr_depth;
152: #ifdef __PROG32
153: /* Hack to treat FPE time as interrupt time so we can measure it */
154: #define CLKF_INTR(frame) \
155: ((current_intr_depth > 1) || \
156: (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE)
157: #else
158: #define CLKF_INTR(frame) (current_intr_depth > 1)
159: #endif
160:
161: /*
162: * CLKF_PC: Extract the program counter from a clockframe
163: */
164: #ifdef __PROG32
165: #define CLKF_PC(frame) (frame->if_pc)
166: #else
167: #define CLKF_PC(frame) (frame->if_r15 & R15_PC)
168: #endif
169:
170: /*
171: * PROC_PC: Find out the program counter for the given process.
172: */
173: #ifdef __PROG32
174: #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_pc)
175: #else
176: #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_r15 & R15_PC)
177: #endif
178:
179: /* The address of the vector page. */
180: extern vaddr_t vector_page;
181: #ifdef __PROG32
182: void arm32_vector_init(vaddr_t, int);
183:
184: #define ARM_VEC_RESET (1 << 0)
185: #define ARM_VEC_UNDEFINED (1 << 1)
186: #define ARM_VEC_SWI (1 << 2)
187: #define ARM_VEC_PREFETCH_ABORT (1 << 3)
188: #define ARM_VEC_DATA_ABORT (1 << 4)
189: #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5)
190: #define ARM_VEC_IRQ (1 << 6)
191: #define ARM_VEC_FIQ (1 << 7)
192:
193: #define ARM_NVEC 8
194: #define ARM_VEC_ALL 0xffffffff
195: #endif
196:
197: /*
198: * Per-CPU information. For now we assume one CPU.
199: */
200:
201: #include <sys/device.h>
202: #include <sys/sched.h>
203: struct cpu_info {
204: struct proc *ci_curproc;
205:
206: struct schedstate_percpu ci_schedstate; /* scheduler state */
207: #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
208: u_long ci_spin_locks; /* # of spin locks held */
209: u_long ci_simple_locks; /* # of simple locks held */
210: #endif
211: struct device *ci_dev; /* Device corresponding to this CPU */
212: u_int32_t ci_arm_cpuid; /* aggregate CPU id */
213: u_int32_t ci_arm_cputype; /* CPU type */
214: u_int32_t ci_arm_cpurev; /* CPU revision */
215: u_int32_t ci_ctrl; /* The CPU control register */
216: #ifdef MULTIPROCESSOR
217: MP_CPU_INFO_MEMBERS
218: #endif
219: };
220:
221: #ifndef MULTIPROCESSOR
222: extern struct cpu_info cpu_info_store;
223: #define curcpu() (&cpu_info_store)
224: #define cpu_number() 0
225: #define CPU_IS_PRIMARY(ci) 1
226: #define CPU_INFO_ITERATOR int
227: #define CPU_INFO_FOREACH(cii, ci) \
228: for (cii = 0, ci = curcpu(); ci != NULL; ci = NULL)
229: #endif
230:
231: #ifdef __PROG32
232: void cpu_proc_fork(struct proc *, struct proc *);
233: #else
234: #define cpu_proc_fork(p1, p2)
235: #endif
236:
237: /*
238: * Scheduling glue
239: */
240:
241: extern int astpending;
242: #define setsoftast() (astpending = 1)
243:
244: /*
245: * Notify the current process (p) that it has a signal pending,
246: * process as soon as possible.
247: */
248:
249: #define signotify(p) setsoftast()
250:
251: #define cpu_wait(p) /* nothing */
252:
253: /*
254: * Preempt the current process if in interrupt from user mode,
255: * or after the current trap/syscall if in system mode.
256: */
257: extern int want_resched; /* resched() was called */
258: #define need_resched(ci) (want_resched = 1, setsoftast())
259:
260: /*
261: * Give a profiling tick to the current process when the user profiling
262: * buffer pages are invalid. On the i386, request an ast to send us
263: * through trap(), marking the proc as needing a profiling tick.
264: */
265: #define need_proftick(p) setsoftast()
266:
267: #ifndef acorn26
268: /*
269: * cpu device glue (belongs in cpuvar.h)
270: */
271:
272: struct device;
273: void cpu_attach (struct device *);
274: int cpu_alloc_idlepcb (struct cpu_info *);
275: #endif
276:
277:
278: /*
279: * Random cruft
280: */
281:
282: /* locore.S */
283: void atomic_set_bit (u_int *address, u_int setmask);
284: void atomic_clear_bit (u_int *address, u_int clearmask);
285:
286: /* cpuswitch.S */
287: struct pcb;
288: void savectx (struct pcb *pcb);
289:
290: /* ast.c */
291: void userret (struct proc *p);
292:
293: /* machdep.h */
294: void bootsync (int);
295:
296: /* fault.c */
297: int badaddr_read (void *, size_t, void *);
298:
299: /* syscall.c */
300: void swi_handler (trapframe_t *);
301:
302: /* machine_machdep.c */
303: void board_startup(void);
304:
305: #endif /* !_LOCORE */
306:
307: #endif /* _KERNEL */
308:
309: #endif /* !_ARM_CPU_H_ */
310:
311: /* End of cpu.h */
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