ARC: Fix WRITE_BCR
[linux-2.6-block.git] / arch / arc / include / asm / arcregs.h
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1/*
2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#ifndef _ASM_ARC_ARCREGS_H
10#define _ASM_ARC_ARCREGS_H
11
bacdf480 12/* Build Configuration Registers */
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13#define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */
14#define ARC_REG_CRC_BCR 0x62
bacdf480 15#define ARC_REG_VECBASE_BCR 0x68
af617428 16#define ARC_REG_PERIBASE_BCR 0x69
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17#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */
18#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
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19#define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */
20#define ARC_REG_TIMERS_BCR 0x75
56372082 21#define ARC_REG_AP_BCR 0x76
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22#define ARC_REG_ICCM_BCR 0x78
23#define ARC_REG_XY_MEM_BCR 0x79
24#define ARC_REG_MAC_BCR 0x7a
25#define ARC_REG_MUL_BCR 0x7b
26#define ARC_REG_SWAP_BCR 0x7c
27#define ARC_REG_NORM_BCR 0x7d
28#define ARC_REG_MIXMAX_BCR 0x7e
29#define ARC_REG_BARREL_BCR 0x7f
30#define ARC_REG_D_UNCACH_BCR 0x6A
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31#define ARC_REG_BPU_BCR 0xc0
32#define ARC_REG_ISA_CFG_BCR 0xc1
33#define ARC_REG_SMART_BCR 0xFF
bacdf480 34
ac4c244d 35/* status32 Bits Positions */
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36#define STATUS_AE_BIT 5 /* Exception active */
37#define STATUS_DE_BIT 6 /* PC is in delay slot */
38#define STATUS_U_BIT 7 /* User/Kernel mode */
39#define STATUS_L_BIT 12 /* Loop inhibit */
40
41/* These masks correspond to the status word(STATUS_32) bits */
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42#define STATUS_AE_MASK (1<<STATUS_AE_BIT)
43#define STATUS_DE_MASK (1<<STATUS_DE_BIT)
44#define STATUS_U_MASK (1<<STATUS_U_BIT)
45#define STATUS_L_MASK (1<<STATUS_L_BIT)
46
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47/*
48 * ECR: Exception Cause Reg bits-n-pieces
49 * [23:16] = Exception Vector
50 * [15: 8] = Exception Cause Code
51 * [ 7: 0] = Exception Parameters (for certain types only)
52 */
53#define ECR_VEC_MASK 0xff0000
54#define ECR_CODE_MASK 0x00ff00
55#define ECR_PARAM_MASK 0x0000ff
56
57/* Exception Cause Vector Values */
58#define ECR_V_INSN_ERR 0x02
59#define ECR_V_MACH_CHK 0x20
60#define ECR_V_ITLB_MISS 0x21
61#define ECR_V_DTLB_MISS 0x22
62#define ECR_V_PROTV 0x23
502a0c77 63#define ECR_V_TRAP 0x25
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64
65/* Protection Violation Exception Cause Code Values */
66#define ECR_C_PROTV_INST_FETCH 0x00
67#define ECR_C_PROTV_LOAD 0x01
68#define ECR_C_PROTV_STORE 0x02
69#define ECR_C_PROTV_XCHG 0x03
70#define ECR_C_PROTV_MISALIG_DATA 0x04
71
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72#define ECR_C_BIT_PROTV_MISALIG_DATA 10
73
74/* Machine Check Cause Code Values */
75#define ECR_C_MCHK_DUP_TLB 0x01
76
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77/* DTLB Miss Exception Cause Code Values */
78#define ECR_C_BIT_DTLB_LD_MISS 8
79#define ECR_C_BIT_DTLB_ST_MISS 9
80
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81/* Dummy ECR values for Interrupts */
82#define event_IRQ1 0x0031abcd
83#define event_IRQ2 0x0032abcd
cc562d2e 84
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85/* Auxiliary registers */
86#define AUX_IDENTITY 4
87#define AUX_INTR_VEC_BASE 0x25
95d6976d 88
f1f3347d 89
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90/*
91 * Floating Pt Registers
92 * Status regs are read-only (build-time) so need not be saved/restored
93 */
94#define ARC_AUX_FP_STAT 0x300
95#define ARC_AUX_DPFP_1L 0x301
96#define ARC_AUX_DPFP_1H 0x302
97#define ARC_AUX_DPFP_2L 0x303
98#define ARC_AUX_DPFP_2H 0x304
99#define ARC_AUX_DPFP_STAT 0x305
100
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101#ifndef __ASSEMBLY__
102
103/*
104 ******************************************************************
105 * Inline ASM macros to read/write AUX Regs
106 * Essentially invocation of lr/sr insns from "C"
107 */
108
109#if 1
110
111#define read_aux_reg(reg) __builtin_arc_lr(reg)
112
113/* gcc builtin sr needs reg param to be long immediate */
114#define write_aux_reg(reg_immed, val) \
115 __builtin_arc_sr((unsigned int)val, reg_immed)
116
117#else
118
119#define read_aux_reg(reg) \
120({ \
121 unsigned int __ret; \
122 __asm__ __volatile__( \
123 " lr %0, [%1]" \
124 : "=r"(__ret) \
125 : "i"(reg)); \
126 __ret; \
127})
128
129/*
130 * Aux Reg address is specified as long immediate by caller
131 * e.g.
132 * write_aux_reg(0x69, some_val);
133 * This generates tightest code.
134 */
135#define write_aux_reg(reg_imm, val) \
136({ \
137 __asm__ __volatile__( \
138 " sr %0, [%1] \n" \
139 : \
140 : "ir"(val), "i"(reg_imm)); \
141})
142
143/*
144 * Aux Reg address is specified in a variable
145 * * e.g.
146 * reg_num = 0x69
147 * write_aux_reg2(reg_num, some_val);
148 * This has to generate glue code to load the reg num from
149 * memory to a reg hence not recommended.
150 */
151#define write_aux_reg2(reg_in_var, val) \
152({ \
153 unsigned int tmp; \
154 \
155 __asm__ __volatile__( \
156 " ld %0, [%2] \n\t" \
157 " sr %1, [%0] \n\t" \
158 : "=&r"(tmp) \
159 : "r"(val), "memory"(&reg_in_var)); \
160})
161
162#endif
163
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164#define READ_BCR(reg, into) \
165{ \
166 unsigned int tmp; \
167 tmp = read_aux_reg(reg); \
168 if (sizeof(tmp) == sizeof(into)) { \
169 into = *((typeof(into) *)&tmp); \
170 } else { \
171 extern void bogus_undefined(void); \
172 bogus_undefined(); \
173 } \
174}
175
1425d5e7 176#define WRITE_AUX(reg, into) \
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177{ \
178 unsigned int tmp; \
179 if (sizeof(tmp) == sizeof(into)) { \
1425d5e7 180 tmp = (*(unsigned int *)&(into)); \
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181 write_aux_reg(reg, tmp); \
182 } else { \
183 extern void bogus_undefined(void); \
184 bogus_undefined(); \
185 } \
186}
187
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188/* Helpers */
189#define TO_KB(bytes) ((bytes) >> 10)
190#define TO_MB(bytes) (TO_KB(bytes) >> 10)
191#define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10))
192#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
95d6976d 193
bf90e1ea 194
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195/*
196 ***************************************************************
197 * Build Configuration Registers, with encoded hardware config
198 */
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199struct bcr_identity {
200#ifdef CONFIG_CPU_BIG_ENDIAN
201 unsigned int chip_id:16, cpu_id:8, family:8;
202#else
203 unsigned int family:8, cpu_id:8, chip_id:16;
204#endif
205};
95d6976d 206
56372082 207struct bcr_isa {
af617428 208#ifdef CONFIG_CPU_BIG_ENDIAN
56372082 209 unsigned int pad1:23, atomic1:1, ver:8;
af617428 210#else
56372082 211 unsigned int ver:8, atomic1:1, pad1:23;
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212#endif
213};
214
56372082 215struct bcr_mpy {
af617428 216#ifdef CONFIG_CPU_BIG_ENDIAN
56372082 217 unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8;
af617428 218#else
56372082 219 unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8;
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220#endif
221};
222
223struct bcr_extn_xymem {
224#ifdef CONFIG_CPU_BIG_ENDIAN
225 unsigned int ram_org:2, num_banks:4, bank_sz:4, ver:8;
226#else
227 unsigned int ver:8, bank_sz:4, num_banks:4, ram_org:2;
228#endif
229};
230
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231struct bcr_perip {
232#ifdef CONFIG_CPU_BIG_ENDIAN
233 unsigned int start:8, pad2:8, sz:8, pad:8;
234#else
235 unsigned int pad:8, sz:8, pad2:8, start:8;
236#endif
237};
56372082 238
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239struct bcr_iccm {
240#ifdef CONFIG_CPU_BIG_ENDIAN
241 unsigned int base:16, pad:5, sz:3, ver:8;
242#else
243 unsigned int ver:8, sz:3, pad:5, base:16;
244#endif
245};
246
247/* DCCM Base Address Register: ARC_REG_DCCMBASE_BCR */
248struct bcr_dccm_base {
249#ifdef CONFIG_CPU_BIG_ENDIAN
250 unsigned int addr:24, ver:8;
251#else
252 unsigned int ver:8, addr:24;
253#endif
254};
255
256/* DCCM RAM Configuration Register: ARC_REG_DCCM_BCR */
257struct bcr_dccm {
258#ifdef CONFIG_CPU_BIG_ENDIAN
259 unsigned int res:21, sz:3, ver:8;
260#else
261 unsigned int ver:8, sz:3, res:21;
262#endif
263};
264
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265/* ARCompact: Both SP and DP FPU BCRs have same format */
266struct bcr_fp_arcompact {
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267#ifdef CONFIG_CPU_BIG_ENDIAN
268 unsigned int fast:1, ver:8;
269#else
270 unsigned int ver:8, fast:1;
271#endif
272};
273
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274struct bcr_timer {
275#ifdef CONFIG_CPU_BIG_ENDIAN
276 unsigned int pad2:15, rtsc:1, pad1:6, t1:1, t0:1, ver:8;
277#else
278 unsigned int ver:8, t0:1, t1:1, pad1:6, rtsc:1, pad2:15;
279#endif
280};
281
282struct bcr_bpu_arcompact {
283#ifdef CONFIG_CPU_BIG_ENDIAN
284 unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8;
285#else
286 unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19;
287#endif
288};
289
290struct bcr_generic {
291#ifdef CONFIG_CPU_BIG_ENDIAN
292 unsigned int pad:24, ver:8;
293#else
294 unsigned int ver:8, pad:24;
295#endif
296};
297
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298/*
299 *******************************************************************
300 * Generic structures to hold build configuration used at runtime
301 */
302
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303struct cpuinfo_arc_mmu {
304 unsigned int ver, pg_sz, sets, ways, u_dtlb, u_itlb, num_tlb;
305};
306
95d6976d 307struct cpuinfo_arc_cache {
da40ff48 308 unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6;
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309};
310
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311struct cpuinfo_arc_bpu {
312 unsigned int ver, full, num_cache, num_pred;
313};
314
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315struct cpuinfo_arc_ccm {
316 unsigned int base_addr, sz;
317};
318
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319struct cpuinfo_arc {
320 struct cpuinfo_arc_cache icache, dcache;
cc562d2e 321 struct cpuinfo_arc_mmu mmu;
56372082 322 struct cpuinfo_arc_bpu bpu;
af617428 323 struct bcr_identity core;
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324 struct bcr_isa isa;
325 struct bcr_timer timers;
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326 unsigned int vec_base;
327 unsigned int uncached_base;
328 struct cpuinfo_arc_ccm iccm, dccm;
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329 struct {
330 unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
331 fpu_sp:1, fpu_dp:1, pad2:6,
332 debug:1, ap:1, smart:1, rtt:1, pad3:4,
333 pad4:8;
334 } extn;
335 struct bcr_mpy extn_mpy;
af617428 336 struct bcr_extn_xymem extn_xymem;
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337};
338
339extern struct cpuinfo_arc cpuinfo_arc700[];
340
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341#endif /* __ASEMBLY__ */
342
ac4c244d 343#endif /* _ASM_ARC_ARCREGS_H */