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Diffstat (limited to 'include/asm-sh64')
-rw-r--r-- | include/asm-sh64/processor.h | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/include/asm-sh64/processor.h b/include/asm-sh64/processor.h deleted file mode 100644 index eb2bee4b47b..00000000000 --- a/include/asm-sh64/processor.h +++ /dev/null | |||
@@ -1,287 +0,0 @@ | |||
1 | #ifndef __ASM_SH64_PROCESSOR_H | ||
2 | #define __ASM_SH64_PROCESSOR_H | ||
3 | |||
4 | /* | ||
5 | * This file is subject to the terms and conditions of the GNU General Public | ||
6 | * License. See the file "COPYING" in the main directory of this archive | ||
7 | * for more details. | ||
8 | * | ||
9 | * include/asm-sh64/processor.h | ||
10 | * | ||
11 | * Copyright (C) 2000, 2001 Paolo Alberelli | ||
12 | * Copyright (C) 2003 Paul Mundt | ||
13 | * Copyright (C) 2004 Richard Curnow | ||
14 | * | ||
15 | */ | ||
16 | |||
17 | #include <asm/page.h> | ||
18 | |||
19 | #ifndef __ASSEMBLY__ | ||
20 | |||
21 | #include <asm/types.h> | ||
22 | #include <asm/cache.h> | ||
23 | #include <asm/registers.h> | ||
24 | #include <linux/threads.h> | ||
25 | #include <linux/compiler.h> | ||
26 | |||
27 | /* | ||
28 | * Default implementation of macro that returns current | ||
29 | * instruction pointer ("program counter"). | ||
30 | */ | ||
31 | #define current_text_addr() ({ \ | ||
32 | void *pc; \ | ||
33 | unsigned long long __dummy = 0; \ | ||
34 | __asm__("gettr tr0, %1\n\t" \ | ||
35 | "pta 4, tr0\n\t" \ | ||
36 | "gettr tr0, %0\n\t" \ | ||
37 | "ptabs %1, tr0\n\t" \ | ||
38 | :"=r" (pc), "=r" (__dummy) \ | ||
39 | : "1" (__dummy)); \ | ||
40 | pc; }) | ||
41 | |||
42 | /* | ||
43 | * CPU type and hardware bug flags. Kept separately for each CPU. | ||
44 | */ | ||
45 | enum cpu_type { | ||
46 | CPU_SH5_101, | ||
47 | CPU_SH5_103, | ||
48 | CPU_SH_NONE | ||
49 | }; | ||
50 | |||
51 | /* | ||
52 | * TLB information structure | ||
53 | * | ||
54 | * Defined for both I and D tlb, per-processor. | ||
55 | */ | ||
56 | struct tlb_info { | ||
57 | unsigned long long next; | ||
58 | unsigned long long first; | ||
59 | unsigned long long last; | ||
60 | |||
61 | unsigned int entries; | ||
62 | unsigned int step; | ||
63 | |||
64 | unsigned long flags; | ||
65 | }; | ||
66 | |||
67 | struct sh_cpuinfo { | ||
68 | enum cpu_type type; | ||
69 | unsigned long loops_per_jiffy; | ||
70 | |||
71 | char hard_math; | ||
72 | |||
73 | unsigned long *pgd_quick; | ||
74 | unsigned long *pmd_quick; | ||
75 | unsigned long *pte_quick; | ||
76 | unsigned long pgtable_cache_sz; | ||
77 | unsigned int cpu_clock, master_clock, bus_clock, module_clock; | ||
78 | |||
79 | /* Cache info */ | ||
80 | struct cache_info icache; | ||
81 | struct cache_info dcache; | ||
82 | |||
83 | /* TLB info */ | ||
84 | struct tlb_info itlb; | ||
85 | struct tlb_info dtlb; | ||
86 | }; | ||
87 | |||
88 | extern struct sh_cpuinfo boot_cpu_data; | ||
89 | |||
90 | #define cpu_data (&boot_cpu_data) | ||
91 | #define current_cpu_data boot_cpu_data | ||
92 | |||
93 | #endif | ||
94 | |||
95 | /* | ||
96 | * User space process size: 2GB - 4k. | ||
97 | */ | ||
98 | #define TASK_SIZE 0x7ffff000UL | ||
99 | |||
100 | /* This decides where the kernel will search for a free chunk of vm | ||
101 | * space during mmap's. | ||
102 | */ | ||
103 | #define TASK_UNMAPPED_BASE (TASK_SIZE / 3) | ||
104 | |||
105 | /* | ||
106 | * Bit of SR register | ||
107 | * | ||
108 | * FD-bit: | ||
109 | * When it's set, it means the processor doesn't have right to use FPU, | ||
110 | * and it results exception when the floating operation is executed. | ||
111 | * | ||
112 | * IMASK-bit: | ||
113 | * Interrupt level mask | ||
114 | * | ||
115 | * STEP-bit: | ||
116 | * Single step bit | ||
117 | * | ||
118 | */ | ||
119 | #define SR_FD 0x00008000 | ||
120 | |||
121 | #if defined(CONFIG_SH64_SR_WATCH) | ||
122 | #define SR_MMU 0x84000000 | ||
123 | #else | ||
124 | #define SR_MMU 0x80000000 | ||
125 | #endif | ||
126 | |||
127 | #define SR_IMASK 0x000000f0 | ||
128 | #define SR_SSTEP 0x08000000 | ||
129 | |||
130 | #ifndef __ASSEMBLY__ | ||
131 | |||
132 | /* | ||
133 | * FPU structure and data : require 8-byte alignment as we need to access it | ||
134 | with fld.p, fst.p | ||
135 | */ | ||
136 | |||
137 | struct sh_fpu_hard_struct { | ||
138 | unsigned long fp_regs[64]; | ||
139 | unsigned int fpscr; | ||
140 | /* long status; * software status information */ | ||
141 | }; | ||
142 | |||
143 | #if 0 | ||
144 | /* Dummy fpu emulator */ | ||
145 | struct sh_fpu_soft_struct { | ||
146 | unsigned long long fp_regs[32]; | ||
147 | unsigned int fpscr; | ||
148 | unsigned char lookahead; | ||
149 | unsigned long entry_pc; | ||
150 | }; | ||
151 | #endif | ||
152 | |||
153 | union sh_fpu_union { | ||
154 | struct sh_fpu_hard_struct hard; | ||
155 | /* 'hard' itself only produces 32 bit alignment, yet we need | ||
156 | to access it using 64 bit load/store as well. */ | ||
157 | unsigned long long alignment_dummy; | ||
158 | }; | ||
159 | |||
160 | struct thread_struct { | ||
161 | unsigned long sp; | ||
162 | unsigned long pc; | ||
163 | /* This stores the address of the pt_regs built during a context | ||
164 | switch, or of the register save area built for a kernel mode | ||
165 | exception. It is used for backtracing the stack of a sleeping task | ||
166 | or one that traps in kernel mode. */ | ||
167 | struct pt_regs *kregs; | ||
168 | /* This stores the address of the pt_regs constructed on entry from | ||
169 | user mode. It is a fixed value over the lifetime of a process, or | ||
170 | NULL for a kernel thread. */ | ||
171 | struct pt_regs *uregs; | ||
172 | |||
173 | unsigned long trap_no, error_code; | ||
174 | unsigned long address; | ||
175 | /* Hardware debugging registers may come here */ | ||
176 | |||
177 | /* floating point info */ | ||
178 | union sh_fpu_union fpu; | ||
179 | }; | ||
180 | |||
181 | #define INIT_MMAP \ | ||
182 | { &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL } | ||
183 | |||
184 | extern struct pt_regs fake_swapper_regs; | ||
185 | |||
186 | #define INIT_THREAD { \ | ||
187 | .sp = sizeof(init_stack) + \ | ||
188 | (long) &init_stack, \ | ||
189 | .pc = 0, \ | ||
190 | .kregs = &fake_swapper_regs, \ | ||
191 | .uregs = NULL, \ | ||
192 | .trap_no = 0, \ | ||
193 | .error_code = 0, \ | ||
194 | .address = 0, \ | ||
195 | .fpu = { { { 0, } }, } \ | ||
196 | } | ||
197 | |||
198 | /* | ||
199 | * Do necessary setup to start up a newly executed thread. | ||
200 | */ | ||
201 | #define SR_USER (SR_MMU | SR_FD) | ||
202 | |||
203 | #define start_thread(regs, new_pc, new_sp) \ | ||
204 | set_fs(USER_DS); \ | ||
205 | regs->sr = SR_USER; /* User mode. */ \ | ||
206 | regs->pc = new_pc - 4; /* Compensate syscall exit */ \ | ||
207 | regs->pc |= 1; /* Set SHmedia ! */ \ | ||
208 | regs->regs[18] = 0; \ | ||
209 | regs->regs[15] = new_sp | ||
210 | |||
211 | /* Forward declaration, a strange C thing */ | ||
212 | struct task_struct; | ||
213 | struct mm_struct; | ||
214 | |||
215 | /* Free all resources held by a thread. */ | ||
216 | extern void release_thread(struct task_struct *); | ||
217 | /* | ||
218 | * create a kernel thread without removing it from tasklists | ||
219 | */ | ||
220 | extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); | ||
221 | |||
222 | |||
223 | /* Copy and release all segment info associated with a VM */ | ||
224 | #define copy_segments(p, mm) do { } while (0) | ||
225 | #define release_segments(mm) do { } while (0) | ||
226 | #define forget_segments() do { } while (0) | ||
227 | #define prepare_to_copy(tsk) do { } while (0) | ||
228 | /* | ||
229 | * FPU lazy state save handling. | ||
230 | */ | ||
231 | |||
232 | static inline void release_fpu(void) | ||
233 | { | ||
234 | unsigned long long __dummy; | ||
235 | |||
236 | /* Set FD flag in SR */ | ||
237 | __asm__ __volatile__("getcon " __SR ", %0\n\t" | ||
238 | "or %0, %1, %0\n\t" | ||
239 | "putcon %0, " __SR "\n\t" | ||
240 | : "=&r" (__dummy) | ||
241 | : "r" (SR_FD)); | ||
242 | } | ||
243 | |||
244 | static inline void grab_fpu(void) | ||
245 | { | ||
246 | unsigned long long __dummy; | ||
247 | |||
248 | /* Clear out FD flag in SR */ | ||
249 | __asm__ __volatile__("getcon " __SR ", %0\n\t" | ||
250 | "and %0, %1, %0\n\t" | ||
251 | "putcon %0, " __SR "\n\t" | ||
252 | : "=&r" (__dummy) | ||
253 | : "r" (~SR_FD)); | ||
254 | } | ||
255 | |||
256 | /* Round to nearest, no exceptions on inexact, overflow, underflow, | ||
257 | zero-divide, invalid. Configure option for whether to flush denorms to | ||
258 | zero, or except if a denorm is encountered. */ | ||
259 | #if defined(CONFIG_SH64_FPU_DENORM_FLUSH) | ||
260 | #define FPSCR_INIT 0x00040000 | ||
261 | #else | ||
262 | #define FPSCR_INIT 0x00000000 | ||
263 | #endif | ||
264 | |||
265 | /* Save the current FP regs */ | ||
266 | void fpsave(struct sh_fpu_hard_struct *fpregs); | ||
267 | |||
268 | /* Initialise the FP state of a task */ | ||
269 | void fpinit(struct sh_fpu_hard_struct *fpregs); | ||
270 | |||
271 | extern struct task_struct *last_task_used_math; | ||
272 | |||
273 | /* | ||
274 | * Return saved PC of a blocked thread. | ||
275 | */ | ||
276 | #define thread_saved_pc(tsk) (tsk->thread.pc) | ||
277 | |||
278 | extern unsigned long get_wchan(struct task_struct *p); | ||
279 | |||
280 | #define KSTK_EIP(tsk) ((tsk)->thread.pc) | ||
281 | #define KSTK_ESP(tsk) ((tsk)->thread.sp) | ||
282 | |||
283 | #define cpu_relax() barrier() | ||
284 | |||
285 | #endif /* __ASSEMBLY__ */ | ||
286 | #endif /* __ASM_SH64_PROCESSOR_H */ | ||
287 | |||