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1 /*
2  * MT regs definitions, follows on from mipsregs.h
3  * Copyright (C) 2004 - 2005 MIPS Technologies, Inc.  All rights reserved.
4  * Elizabeth Clarke et. al.
5  *
6  */
7 #ifndef _ASM_MIPSMTREGS_H
8 #define _ASM_MIPSMTREGS_H
9
10 #include <asm/mipsregs.h>
11 #include <asm/war.h>
12
13 #ifndef __ASSEMBLY__
14
15 /*
16  * C macros
17  */
18
19 #define read_c0_mvpcontrol()            __read_32bit_c0_register($0, 1)
20 #define write_c0_mvpcontrol(val)        __write_32bit_c0_register($0, 1, val)
21
22 #define read_c0_mvpconf0()              __read_32bit_c0_register($0, 2)
23 #define read_c0_mvpconf1()              __read_32bit_c0_register($0, 3)
24
25 #define read_c0_vpecontrol()            __read_32bit_c0_register($1, 1)
26 #define write_c0_vpecontrol(val)        __write_32bit_c0_register($1, 1, val)
27
28 #define read_c0_vpeconf0()              __read_32bit_c0_register($1, 2)
29 #define write_c0_vpeconf0(val)          __write_32bit_c0_register($1, 2, val)
30
31 #define read_c0_tcstatus()              __read_32bit_c0_register($2, 1)
32 #define write_c0_tcstatus(val)          __write_32bit_c0_register($2, 1, val)
33
34 #define read_c0_tcbind()                __read_32bit_c0_register($2, 2)
35
36 #define read_c0_tccontext()             __read_32bit_c0_register($2, 5)
37 #define write_c0_tccontext(val)         __write_32bit_c0_register($2, 5, val)
38
39 #else /* Assembly */
40 /*
41  * Macros for use in assembly language code
42  */
43
44 #define CP0_MVPCONTROL          $0,1
45 #define CP0_MVPCONF0            $0,2
46 #define CP0_MVPCONF1            $0,3
47 #define CP0_VPECONTROL          $1,1
48 #define CP0_VPECONF0            $1,2
49 #define CP0_VPECONF1            $1,3
50 #define CP0_YQMASK              $1,4
51 #define CP0_VPESCHEDULE $1,5
52 #define CP0_VPESCHEFBK          $1,6
53 #define CP0_TCSTATUS            $2,1
54 #define CP0_TCBIND              $2,2
55 #define CP0_TCRESTART           $2,3
56 #define CP0_TCHALT              $2,4
57 #define CP0_TCCONTEXT           $2,5
58 #define CP0_TCSCHEDULE          $2,6
59 #define CP0_TCSCHEFBK           $2,7
60 #define CP0_SRSCONF0            $6,1
61 #define CP0_SRSCONF1            $6,2
62 #define CP0_SRSCONF2            $6,3
63 #define CP0_SRSCONF3            $6,4
64 #define CP0_SRSCONF4            $6,5
65
66 #endif
67
68 /* MVPControl fields */
69 #define MVPCONTROL_EVP          (_ULCAST_(1))
70
71 #define MVPCONTROL_VPC_SHIFT    1
72 #define MVPCONTROL_VPC          (_ULCAST_(1) << MVPCONTROL_VPC_SHIFT)
73
74 #define MVPCONTROL_STLB_SHIFT   2
75 #define MVPCONTROL_STLB         (_ULCAST_(1) << MVPCONTROL_STLB_SHIFT)
76
77
78 /* MVPConf0 fields */
79 #define MVPCONF0_PTC_SHIFT      0
80 #define MVPCONF0_PTC            ( _ULCAST_(0xff))
81 #define MVPCONF0_PVPE_SHIFT     10
82 #define MVPCONF0_PVPE           ( _ULCAST_(0xf) << MVPCONF0_PVPE_SHIFT)
83 #define MVPCONF0_TCA_SHIFT      15
84 #define MVPCONF0_TCA            ( _ULCAST_(1) << MVPCONF0_TCA_SHIFT)
85 #define MVPCONF0_PTLBE_SHIFT    16
86 #define MVPCONF0_PTLBE          (_ULCAST_(0x3ff) << MVPCONF0_PTLBE_SHIFT)
87 #define MVPCONF0_TLBS_SHIFT     29
88 #define MVPCONF0_TLBS           (_ULCAST_(1) << MVPCONF0_TLBS_SHIFT)
89 #define MVPCONF0_M_SHIFT        31
90 #define MVPCONF0_M              (_ULCAST_(0x1) << MVPCONF0_M_SHIFT)
91
92
93 /* config3 fields */
94 #define CONFIG3_MT_SHIFT        2
95 #define CONFIG3_MT              (_ULCAST_(1) << CONFIG3_MT_SHIFT)
96
97
98 /* VPEControl fields (per VPE) */
99 #define VPECONTROL_TARGTC       (_ULCAST_(0xff))
100
101 #define VPECONTROL_TE_SHIFT     15
102 #define VPECONTROL_TE           (_ULCAST_(1) << VPECONTROL_TE_SHIFT)
103 #define VPECONTROL_EXCPT_SHIFT  16
104 #define VPECONTROL_EXCPT        (_ULCAST_(0x7) << VPECONTROL_EXCPT_SHIFT)
105
106 /* Thread Exception Codes for EXCPT field */
107 #define THREX_TU                0
108 #define THREX_TO                1
109 #define THREX_IYQ               2
110 #define THREX_GSX               3
111 #define THREX_YSCH              4
112 #define THREX_GSSCH             5
113
114 #define VPECONTROL_GSI_SHIFT    20
115 #define VPECONTROL_GSI          (_ULCAST_(1) << VPECONTROL_GSI_SHIFT)
116 #define VPECONTROL_YSI_SHIFT    21
117 #define VPECONTROL_YSI          (_ULCAST_(1) << VPECONTROL_YSI_SHIFT)
118
119 /* VPEConf0 fields (per VPE) */
120 #define VPECONF0_VPA_SHIFT      0
121 #define VPECONF0_VPA            (_ULCAST_(1) << VPECONF0_VPA_SHIFT)
122 #define VPECONF0_MVP_SHIFT      1
123 #define VPECONF0_MVP            (_ULCAST_(1) << VPECONF0_MVP_SHIFT)
124 #define VPECONF0_XTC_SHIFT      21
125 #define VPECONF0_XTC            (_ULCAST_(0xff) << VPECONF0_XTC_SHIFT)
126
127 /* TCStatus fields (per TC) */
128 #define TCSTATUS_TASID          (_ULCAST_(0xff))
129 #define TCSTATUS_IXMT_SHIFT     10
130 #define TCSTATUS_IXMT           (_ULCAST_(1) << TCSTATUS_IXMT_SHIFT)
131 #define TCSTATUS_TKSU_SHIFT     11
132 #define TCSTATUS_TKSU           (_ULCAST_(3) << TCSTATUS_TKSU_SHIFT)
133 #define TCSTATUS_A_SHIFT        13
134 #define TCSTATUS_A              (_ULCAST_(1) << TCSTATUS_A_SHIFT)
135 #define TCSTATUS_DA_SHIFT       15
136 #define TCSTATUS_DA             (_ULCAST_(1) << TCSTATUS_DA_SHIFT)
137 #define TCSTATUS_DT_SHIFT       20
138 #define TCSTATUS_DT             (_ULCAST_(1) << TCSTATUS_DT_SHIFT)
139 #define TCSTATUS_TDS_SHIFT      21
140 #define TCSTATUS_TDS            (_ULCAST_(1) << TCSTATUS_TDS_SHIFT)
141 #define TCSTATUS_TSST_SHIFT     22
142 #define TCSTATUS_TSST           (_ULCAST_(1) << TCSTATUS_TSST_SHIFT)
143 #define TCSTATUS_RNST_SHIFT     23
144 #define TCSTATUS_RNST           (_ULCAST_(3) << TCSTATUS_RNST_SHIFT)
145 /* Codes for RNST */
146 #define TC_RUNNING              0
147 #define TC_WAITING              1
148 #define TC_YIELDING             2
149 #define TC_GATED                3
150
151 #define TCSTATUS_TMX_SHIFT      27
152 #define TCSTATUS_TMX            (_ULCAST_(1) << TCSTATUS_TMX_SHIFT)
153 /* TCStatus TCU bits can use same definitions/offsets as CU bits in Status */
154
155 /* TCBind */
156 #define TCBIND_CURVPE_SHIFT     0
157 #define TCBIND_CURVPE           (_ULCAST_(0xf))
158
159 #define TCBIND_CURTC_SHIFT      21
160
161 #define TCBIND_CURTC            (_ULCAST_(0xff) << TCBIND_CURTC_SHIFT)
162
163 /* TCHalt */
164 #define TCHALT_H                (_ULCAST_(1))
165
166 #ifndef __ASSEMBLY__
167
168 extern void mips_mt_regdump(void);
169
170 static inline unsigned int dvpe(void)
171 {
172         int res = 0;
173
174         __asm__ __volatile__(
175         "       .set    push                                            \n"
176         "       .set    noreorder                                       \n"
177         "       .set    noat                                            \n"
178         "       .set    mips32r2                                        \n"
179         "       .word   0x41610001              # dvpe $1               \n"
180         "       move    %0, $1                                          \n"
181         "       ehb                                                     \n"
182         "       .set    pop                                             \n"
183         : "=r" (res));
184
185         instruction_hazard();
186
187         return res;
188 }
189
190 static inline void __raw_evpe(void)
191 {
192         __asm__ __volatile__(
193         "       .set    push                                            \n"
194         "       .set    noreorder                                       \n"
195         "       .set    noat                                            \n"
196         "       .set    mips32r2                                        \n"
197         "       .word   0x41600021              # evpe                  \n"
198         "       ehb                                                     \n"
199         "       .set    pop                                             \n");
200 }
201
202 /* Enable multiMT if previous suggested it should be.
203    EMT_ENABLE to force */
204
205 #define EVPE_ENABLE MVPCONTROL_EVP
206
207 static inline void evpe(int previous)
208 {
209         if ((previous & MVPCONTROL_EVP))
210                 __raw_evpe();
211 }
212
213 static inline unsigned int dmt(void)
214 {
215         int res;
216
217         __asm__ __volatile__(
218         "       .set    push                                            \n"
219         "       .set    mips32r2                                        \n"
220         "       .set    noat                                            \n"
221         "       .word   0x41610BC1                      # dmt $1        \n"
222         "       ehb                                                     \n"
223         "       move    %0, $1                                          \n"
224         "       .set    pop                                             \n"
225         : "=r" (res));
226
227         instruction_hazard();
228
229         return res;
230 }
231
232 static inline void __raw_emt(void)
233 {
234         __asm__ __volatile__(
235         "       .set    noreorder                                       \n"
236         "       .set    mips32r2                                        \n"
237         "       emt                                                     \n"
238         "       ehb                                                     \n"
239         "       .set    mips0                                           \n"
240         "       .set    reorder");
241 }
242
243 /* enable multiVPE if previous suggested it should be.
244    EVPE_ENABLE to force */
245
246 #define EMT_ENABLE VPECONTROL_TE
247
248 static inline void emt(int previous)
249 {
250         if ((previous & EMT_ENABLE))
251                 __raw_emt();
252 }
253
254 static inline void ehb(void)
255 {
256         __asm__ __volatile__(
257         "       .set    mips32r2                                \n"
258         "       ehb                                             \n"
259         "       .set    mips0                                   \n");
260 }
261
262 #define mftc0(rt,sel)                                                   \
263 ({                                                                      \
264          unsigned long  __res;                                          \
265                                                                         \
266         __asm__ __volatile__(                                           \
267         "       .set    push                                    \n"     \
268         "       .set    mips32r2                                \n"     \
269         "       .set    noat                                    \n"     \
270         "       # mftc0 $1, $" #rt ", " #sel "                  \n"     \
271         "       .word   0x41000800 | (" #rt " << 16) | " #sel " \n"     \
272         "       move    %0, $1                                  \n"     \
273         "       .set    pop                                     \n"     \
274         : "=r" (__res));                                                \
275                                                                         \
276         __res;                                                          \
277 })
278
279 #define mftgpr(rt)                                                      \
280 ({                                                                      \
281         unsigned long __res;                                            \
282                                                                         \
283         __asm__ __volatile__(                                           \
284         "       .set    push                                    \n"     \
285         "       .set    mips32r2                                \n"     \
286         "       mftgpr  %0," #rt "                              \n"     \
287         "       .set    pop                                     \n"     \
288         : "=r" (__res));                                                \
289                                                                         \
290         __res;                                                          \
291 })
292
293 #define mftr(rt,u,sel)                                                  \
294 ({                                                                      \
295         unsigned long __res;                                            \
296                                                                         \
297         __asm__ __volatile__(                                           \
298         ".set noat\n\t"                                                 \
299         "mftr\t%0, " #rt ", " #u ", " #sel "\n\t"                       \
300         ".set at\n\t"                                                   \
301         : "=r" (__res));                                                \
302                                                                         \
303         __res;                                                          \
304 })
305
306 #define mttgpr(rd,v)                                                    \
307 do {                                                                    \
308         __asm__ __volatile__(                                           \
309         "       .set    push                                    \n"     \
310         "       .set    mips32r2                                \n"     \
311         "       .set    noat                                    \n"     \
312         "       move    $1, %0                                  \n"     \
313         "       # mttgpr $1, " #rd "                            \n"     \
314         "       .word   0x41810020 | (" #rd " << 11)            \n"     \
315         "       .set    pop                                     \n"     \
316         : : "r" (v));                                                   \
317 } while (0)
318
319 #define mttc0(rd,sel,v)                                                 \
320 ({                                                                      \
321         __asm__ __volatile__(                                           \
322         "       .set    push                                    \n"     \
323         "       .set    mips32r2                                \n"     \
324         "       .set    noat                                    \n"     \
325         "       move    $1, %0                                  \n"     \
326         "       # mttc0 %0," #rd ", " #sel "                    \n"     \
327         "       .word   0x41810000 | (" #rd " << 11) | " #sel " \n"     \
328         "       .set    pop                                     \n"     \
329         :                                                               \
330         : "r" (v));                                                     \
331 })
332
333
334 #define mttr(rd,u,sel,v)                                                \
335 ({                                                                      \
336         __asm__ __volatile__(                                           \
337         "mttr   %0," #rd ", " #u ", " #sel                              \
338         : : "r" (v));                                                   \
339 })
340
341
342 #define settc(tc)                                                       \
343 do {                                                                    \
344         write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \
345         ehb();                                                          \
346 } while (0)
347
348
349 /* you *must* set the target tc (settc) before trying to use these */
350 #define read_vpe_c0_vpecontrol()        mftc0(1, 1)
351 #define write_vpe_c0_vpecontrol(val)    mttc0(1, 1, val)
352 #define read_vpe_c0_vpeconf0()          mftc0(1, 2)
353 #define write_vpe_c0_vpeconf0(val)      mttc0(1, 2, val)
354 #define read_vpe_c0_status()            mftc0(12, 0)
355 #define write_vpe_c0_status(val)        mttc0(12, 0, val)
356 #define read_vpe_c0_cause()             mftc0(13, 0)
357 #define write_vpe_c0_cause(val)         mttc0(13, 0, val)
358 #define read_vpe_c0_config()            mftc0(16, 0)
359 #define write_vpe_c0_config(val)        mttc0(16, 0, val)
360 #define read_vpe_c0_config1()           mftc0(16, 1)
361 #define write_vpe_c0_config1(val)       mttc0(16, 1, val)
362 #define read_vpe_c0_config7()           mftc0(16, 7)
363 #define write_vpe_c0_config7(val)       mttc0(16, 7, val)
364 #define read_vpe_c0_ebase()             mftc0(15,1)
365 #define write_vpe_c0_ebase(val)         mttc0(15, 1, val)
366 #define write_vpe_c0_compare(val)       mttc0(11, 0, val)
367
368
369 /* TC */
370 #define read_tc_c0_tcstatus()           mftc0(2, 1)
371 #define write_tc_c0_tcstatus(val)       mttc0(2,1,val)
372 #define read_tc_c0_tcbind()             mftc0(2, 2)
373 #define write_tc_c0_tcbind(val)         mttc0(2,2,val)
374 #define read_tc_c0_tcrestart()          mftc0(2, 3)
375 #define write_tc_c0_tcrestart(val)      mttc0(2,3,val)
376 #define read_tc_c0_tchalt()             mftc0(2, 4)
377 #define write_tc_c0_tchalt(val)         mttc0(2,4,val)
378 #define read_tc_c0_tccontext()          mftc0(2, 5)
379 #define write_tc_c0_tccontext(val)      mttc0(2,5,val)
380
381 /* GPR */
382 #define read_tc_gpr_sp()                mftgpr(29)
383 #define write_tc_gpr_sp(val)            mttgpr(29, val)
384 #define read_tc_gpr_gp()                mftgpr(28)
385 #define write_tc_gpr_gp(val)            mttgpr(28, val)
386
387 __BUILD_SET_C0(mvpcontrol)
388
389 #endif /* Not __ASSEMBLY__ */
390
391 #endif