tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
168extern void mips_mt_regdump(unsigned long previous_mvpcontrol_value);
169
170static 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
190static 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
207static inline void evpe(int previous)
208{
209 if ((previous & MVPCONTROL_EVP))
210 __raw_evpe();
211}
212
213static 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
232static inline void __raw_emt(void)
233{
234 __asm__ __volatile__(
235 " .set noreorder \n"
236 " .set mips32r2 \n"
237 " .word 0x41600be1 # 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
248static inline void emt(int previous)
249{
250 if ((previous & EMT_ENABLE))
251 __raw_emt();
252}
253
254static 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 noat \n" \
286 " .set mips32r2 \n" \
287 " # mftgpr $1," #rt " \n" \
288 " .word 0x41000820 | (" #rt " << 16) \n" \
289 " move %0, $1 \n" \
290 " .set pop \n" \
291 : "=r" (__res)); \
292 \
293 __res; \
294})
295
296#define mftr(rt,u,sel) \
297({ \
298 unsigned long __res; \
299 \
300 __asm__ __volatile__( \
301 " mftr %0, " #rt ", " #u ", " #sel " \n" \
302 : "=r" (__res)); \
303 \
304 __res; \
305})
306
307#define mttgpr(rd,v) \
308do { \
309 __asm__ __volatile__( \
310 " .set push \n" \
311 " .set mips32r2 \n" \
312 " .set noat \n" \
313 " move $1, %0 \n" \
314 " # mttgpr $1, " #rd " \n" \
315 " .word 0x41810020 | (" #rd " << 11) \n" \
316 " .set pop \n" \
317 : : "r" (v)); \
318} while (0)
319
320#define mttc0(rd,sel,v) \
321({ \
322 __asm__ __volatile__( \
323 " .set push \n" \
324 " .set mips32r2 \n" \
325 " .set noat \n" \
326 " move $1, %0 \n" \
327 " # mttc0 %0," #rd ", " #sel " \n" \
328 " .word 0x41810000 | (" #rd " << 11) | " #sel " \n" \
329 " .set pop \n" \
330 : \
331 : "r" (v)); \
332})
333
334
335#define mttr(rd,u,sel,v) \
336({ \
337 __asm__ __volatile__( \
338 "mttr %0," #rd ", " #u ", " #sel \
339 : : "r" (v)); \
340})
341
342
343#define settc(tc) \
344do { \
345 write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \
346 ehb(); \
347} while (0)
348
349
350/* you *must* set the target tc (settc) before trying to use these */
351#define read_vpe_c0_vpecontrol() mftc0(1, 1)
352#define write_vpe_c0_vpecontrol(val) mttc0(1, 1, val)
353#define read_vpe_c0_vpeconf0() mftc0(1, 2)
354#define write_vpe_c0_vpeconf0(val) mttc0(1, 2, val)
355#define read_vpe_c0_status() mftc0(12, 0)
356#define write_vpe_c0_status(val) mttc0(12, 0, val)
357#define read_vpe_c0_cause() mftc0(13, 0)
358#define write_vpe_c0_cause(val) mttc0(13, 0, val)
359#define read_vpe_c0_config() mftc0(16, 0)
360#define write_vpe_c0_config(val) mttc0(16, 0, val)
361#define read_vpe_c0_config1() mftc0(16, 1)
362#define write_vpe_c0_config1(val) mttc0(16, 1, val)
363#define read_vpe_c0_config7() mftc0(16, 7)
364#define write_vpe_c0_config7(val) mttc0(16, 7, val)
365#define read_vpe_c0_ebase() mftc0(15,1)
366#define write_vpe_c0_ebase(val) mttc0(15, 1, val)
367#define write_vpe_c0_compare(val) mttc0(11, 0, val)
368#define read_vpe_c0_badvaddr() mftc0(8, 0)
369#define read_vpe_c0_epc() mftc0(14, 0)
370#define write_vpe_c0_epc(val) mttc0(14, 0, val)
371
372
373/* TC */
374#define read_tc_c0_tcstatus() mftc0(2, 1)
375#define write_tc_c0_tcstatus(val) mttc0(2,1,val)
376#define read_tc_c0_tcbind() mftc0(2, 2)
377#define write_tc_c0_tcbind(val) mttc0(2,2,val)
378#define read_tc_c0_tcrestart() mftc0(2, 3)
379#define write_tc_c0_tcrestart(val) mttc0(2,3,val)
380#define read_tc_c0_tchalt() mftc0(2, 4)
381#define write_tc_c0_tchalt(val) mttc0(2,4,val)
382#define read_tc_c0_tccontext() mftc0(2, 5)
383#define write_tc_c0_tccontext(val) mttc0(2,5,val)
384
385/* GPR */
386#define read_tc_gpr_sp() mftgpr(29)
387#define write_tc_gpr_sp(val) mttgpr(29, val)
388#define read_tc_gpr_gp() mftgpr(28)
389#define write_tc_gpr_gp(val) mttgpr(28, val)
390
391__BUILD_SET_C0(mvpcontrol)
392
393#endif /* Not __ASSEMBLY__ */
394
395#endif