2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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.
9 #ifndef _ASM_ARC_ARCREGS_H
10 #define _ASM_ARC_ARCREGS_H
12 /* Build Configuration Registers */
13 #define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */
14 #define ARC_REG_CRC_BCR 0x62
15 #define ARC_REG_VECBASE_BCR 0x68
16 #define ARC_REG_PERIBASE_BCR 0x69
17 #define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */
18 #define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
19 #define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */
20 #define ARC_REG_TIMERS_BCR 0x75
21 #define ARC_REG_AP_BCR 0x76
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
31 #define ARC_REG_BPU_BCR 0xc0
32 #define ARC_REG_ISA_CFG_BCR 0xc1
33 #define ARC_REG_SMART_BCR 0xFF
35 /* status32 Bits Positions */
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 */
41 /* These masks correspond to the status word(STATUS_32) bits */
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)
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)
53 #define ECR_V_MEM_ERR 0x01
54 #define ECR_V_INSN_ERR 0x02
55 #define ECR_V_MACH_CHK 0x20
56 #define ECR_V_ITLB_MISS 0x21
57 #define ECR_V_DTLB_MISS 0x22
58 #define ECR_V_PROTV 0x23
59 #define ECR_V_TRAP 0x25
61 /* DTLB Miss and Protection Violation Cause Codes */
63 #define ECR_C_PROTV_INST_FETCH 0x00
64 #define ECR_C_PROTV_LOAD 0x01
65 #define ECR_C_PROTV_STORE 0x02
66 #define ECR_C_PROTV_XCHG 0x03
67 #define ECR_C_PROTV_MISALIG_DATA 0x04
69 #define ECR_C_BIT_PROTV_MISALIG_DATA 10
71 /* Machine Check Cause Code Values */
72 #define ECR_C_MCHK_DUP_TLB 0x01
74 /* DTLB Miss Exception Cause Code Values */
75 #define ECR_C_BIT_DTLB_LD_MISS 8
76 #define ECR_C_BIT_DTLB_ST_MISS 9
78 /* Dummy ECR values for Interrupts */
79 #define event_IRQ1 0x0031abcd
80 #define event_IRQ2 0x0032abcd
82 /* Auxiliary registers */
83 #define AUX_IDENTITY 4
84 #define AUX_INTR_VEC_BASE 0x25
88 * Floating Pt Registers
89 * Status regs are read-only (build-time) so need not be saved/restored
91 #define ARC_AUX_FP_STAT 0x300
92 #define ARC_AUX_DPFP_1L 0x301
93 #define ARC_AUX_DPFP_1H 0x302
94 #define ARC_AUX_DPFP_2L 0x303
95 #define ARC_AUX_DPFP_2H 0x304
96 #define ARC_AUX_DPFP_STAT 0x305
101 ******************************************************************
102 * Inline ASM macros to read/write AUX Regs
103 * Essentially invocation of lr/sr insns from "C"
108 #define read_aux_reg(reg) __builtin_arc_lr(reg)
110 /* gcc builtin sr needs reg param to be long immediate */
111 #define write_aux_reg(reg_immed, val) \
112 __builtin_arc_sr((unsigned int)val, reg_immed)
116 #define read_aux_reg(reg) \
118 unsigned int __ret; \
119 __asm__ __volatile__( \
127 * Aux Reg address is specified as long immediate by caller
129 * write_aux_reg(0x69, some_val);
130 * This generates tightest code.
132 #define write_aux_reg(reg_imm, val) \
134 __asm__ __volatile__( \
137 : "ir"(val), "i"(reg_imm)); \
141 * Aux Reg address is specified in a variable
144 * write_aux_reg2(reg_num, some_val);
145 * This has to generate glue code to load the reg num from
146 * memory to a reg hence not recommended.
148 #define write_aux_reg2(reg_in_var, val) \
152 __asm__ __volatile__( \
153 " ld %0, [%2] \n\t" \
154 " sr %1, [%0] \n\t" \
156 : "r"(val), "memory"(®_in_var)); \
161 #define READ_BCR(reg, into) \
164 tmp = read_aux_reg(reg); \
165 if (sizeof(tmp) == sizeof(into)) { \
166 into = *((typeof(into) *)&tmp); \
168 extern void bogus_undefined(void); \
173 #define WRITE_AUX(reg, into) \
176 if (sizeof(tmp) == sizeof(into)) { \
177 tmp = (*(unsigned int *)&(into)); \
178 write_aux_reg(reg, tmp); \
180 extern void bogus_undefined(void); \
186 #define TO_KB(bytes) ((bytes) >> 10)
187 #define TO_MB(bytes) (TO_KB(bytes) >> 10)
188 #define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10))
189 #define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
193 ***************************************************************
194 * Build Configuration Registers, with encoded hardware config
196 struct bcr_identity {
197 #ifdef CONFIG_CPU_BIG_ENDIAN
198 unsigned int chip_id:16, cpu_id:8, family:8;
200 unsigned int family:8, cpu_id:8, chip_id:16;
205 #ifdef CONFIG_CPU_BIG_ENDIAN
206 unsigned int pad1:23, atomic1:1, ver:8;
208 unsigned int ver:8, atomic1:1, pad1:23;
213 #ifdef CONFIG_CPU_BIG_ENDIAN
214 unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8;
216 unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8;
220 struct bcr_extn_xymem {
221 #ifdef CONFIG_CPU_BIG_ENDIAN
222 unsigned int ram_org:2, num_banks:4, bank_sz:4, ver:8;
224 unsigned int ver:8, bank_sz:4, num_banks:4, ram_org:2;
229 #ifdef CONFIG_CPU_BIG_ENDIAN
230 unsigned int start:8, pad2:8, sz:8, pad:8;
232 unsigned int pad:8, sz:8, pad2:8, start:8;
237 #ifdef CONFIG_CPU_BIG_ENDIAN
238 unsigned int base:16, pad:5, sz:3, ver:8;
240 unsigned int ver:8, sz:3, pad:5, base:16;
244 /* DCCM Base Address Register: ARC_REG_DCCMBASE_BCR */
245 struct bcr_dccm_base {
246 #ifdef CONFIG_CPU_BIG_ENDIAN
247 unsigned int addr:24, ver:8;
249 unsigned int ver:8, addr:24;
253 /* DCCM RAM Configuration Register: ARC_REG_DCCM_BCR */
255 #ifdef CONFIG_CPU_BIG_ENDIAN
256 unsigned int res:21, sz:3, ver:8;
258 unsigned int ver:8, sz:3, res:21;
262 /* ARCompact: Both SP and DP FPU BCRs have same format */
263 struct bcr_fp_arcompact {
264 #ifdef CONFIG_CPU_BIG_ENDIAN
265 unsigned int fast:1, ver:8;
267 unsigned int ver:8, fast:1;
272 #ifdef CONFIG_CPU_BIG_ENDIAN
273 unsigned int pad2:15, rtsc:1, pad1:6, t1:1, t0:1, ver:8;
275 unsigned int ver:8, t0:1, t1:1, pad1:6, rtsc:1, pad2:15;
279 struct bcr_bpu_arcompact {
280 #ifdef CONFIG_CPU_BIG_ENDIAN
281 unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8;
283 unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19;
288 #ifdef CONFIG_CPU_BIG_ENDIAN
289 unsigned int pad:24, ver:8;
291 unsigned int ver:8, pad:24;
296 *******************************************************************
297 * Generic structures to hold build configuration used at runtime
300 struct cpuinfo_arc_mmu {
301 unsigned int ver, pg_sz, sets, ways, u_dtlb, u_itlb, num_tlb;
304 struct cpuinfo_arc_cache {
305 unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6;
308 struct cpuinfo_arc_bpu {
309 unsigned int ver, full, num_cache, num_pred;
312 struct cpuinfo_arc_ccm {
313 unsigned int base_addr, sz;
317 struct cpuinfo_arc_cache icache, dcache;
318 struct cpuinfo_arc_mmu mmu;
319 struct cpuinfo_arc_bpu bpu;
320 struct bcr_identity core;
322 struct bcr_timer timers;
323 unsigned int vec_base;
324 unsigned int uncached_base;
325 struct cpuinfo_arc_ccm iccm, dccm;
327 unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
328 fpu_sp:1, fpu_dp:1, pad2:6,
329 debug:1, ap:1, smart:1, rtt:1, pad3:4,
332 struct bcr_mpy extn_mpy;
333 struct bcr_extn_xymem extn_xymem;
336 extern struct cpuinfo_arc cpuinfo_arc700[];
338 #endif /* __ASEMBLY__ */
340 #endif /* _ASM_ARC_ARCREGS_H */