aboutsummaryrefslogtreecommitdiff
path: root/arch/hexagon/include/asm/hexagon_vm.h
blob: 67bb6d6f33372392635e617827ed44e82b3c5188 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
/*
 * Declarations for to Hexagon Virtal Machine.
 *
 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef ASM_HEXAGON_VM_H
#define ASM_HEXAGON_VM_H

/*
 * In principle, a Linux kernel for the VM could
 * selectively define the virtual instructions
 * as inline assembler macros, but for a first pass,
 * we'll use subroutines for both the VM and the native
 * kernels.  It's costing a subroutine call/return,
 * but it makes for a single set of entry points
 * for tracing/debugging.
 */

#define HVM_TRAP1_VMVERSION		0
#define HVM_TRAP1_VMRTE			1
#define HVM_TRAP1_VMSETVEC		2
#define HVM_TRAP1_VMSETIE		3
#define HVM_TRAP1_VMGETIE		4
#define HVM_TRAP1_VMINTOP		5
#define HVM_TRAP1_VMCLRMAP		10
#define HVM_TRAP1_VMNEWMAP		11
#define HVM_TRAP1_FORMERLY_VMWIRE	12
#define HVM_TRAP1_VMCACHE		13
#define HVM_TRAP1_VMGETTIME		14
#define HVM_TRAP1_VMSETTIME		15
#define HVM_TRAP1_VMWAIT		16
#define HVM_TRAP1_VMYIELD		17
#define HVM_TRAP1_VMSTART		18
#define HVM_TRAP1_VMSTOP		19
#define HVM_TRAP1_VMVPID		20
#define HVM_TRAP1_VMSETREGS		21
#define HVM_TRAP1_VMGETREGS		22
#define HVM_TRAP1_VMTIMEROP		24

#ifndef __ASSEMBLY__

enum VM_CACHE_OPS {
	ickill,
	dckill,
	l2kill,
	dccleaninva,
	icinva,
	idsync,
	fetch_cfg
};

enum VM_INT_OPS {
	nop,
	globen,
	globdis,
	locen,
	locdis,
	affinity,
	get,
	peek,
	status,
	post,
	clear
};

extern void _K_VM_event_vector(void);

void __vmrte(void);
long __vmsetvec(void *);
long __vmsetie(long);
long __vmgetie(void);
long __vmintop(enum VM_INT_OPS, long, long, long, long);
long __vmclrmap(void *, unsigned long);
long __vmnewmap(void *);
long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len);
unsigned long long __vmgettime(void);
long __vmsettime(unsigned long long);
long __vmstart(void *, void *);
void __vmstop(void);
long __vmwait(void);
void __vmyield(void);
long __vmvpid(void);

static inline long __vmcache_ickill(void)
{
	return __vmcache(ickill, 0, 0);
}

static inline long __vmcache_dckill(void)
{
	return __vmcache(dckill, 0, 0);
}

static inline long __vmcache_l2kill(void)
{
	return __vmcache(l2kill, 0, 0);
}

static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len)
{
	return __vmcache(dccleaninva, addr, len);
}

static inline long __vmcache_icinva(unsigned long addr, unsigned long len)
{
	return __vmcache(icinva, addr, len);
}

static inline long __vmcache_idsync(unsigned long addr,
					   unsigned long len)
{
	return __vmcache(idsync, addr, len);
}

static inline long __vmcache_fetch_cfg(unsigned long val)
{
	return __vmcache(fetch_cfg, val, 0);
}

/* interrupt operations  */

static inline long __vmintop_nop(void)
{
	return __vmintop(nop, 0, 0, 0, 0);
}

static inline long __vmintop_globen(long i)
{
	return __vmintop(globen, i, 0, 0, 0);
}

static inline long __vmintop_globdis(long i)
{
	return __vmintop(globdis, i, 0, 0, 0);
}

static inline long __vmintop_locen(long i)
{
	return __vmintop(locen, i, 0, 0, 0);
}

static inline long __vmintop_locdis(long i)
{
	return __vmintop(locdis, i, 0, 0, 0);
}

static inline long __vmintop_affinity(long i, long cpu)
{
	return __vmintop(locdis, i, cpu, 0, 0);
}

static inline long __vmintop_get(void)
{
	return __vmintop(get, 0, 0, 0, 0);
}

static inline long __vmintop_peek(void)
{
	return __vmintop(peek, 0, 0, 0, 0);
}

static inline long __vmintop_status(long i)
{
	return __vmintop(status, i, 0, 0, 0);
}

static inline long __vmintop_post(long i)
{
	return __vmintop(post, i, 0, 0, 0);
}

static inline long __vmintop_clear(long i)
{
	return __vmintop(clear, i, 0, 0, 0);
}

#else /* Only assembly code should reference these */

#endif /* __ASSEMBLY__ */

/*
 * Constants for virtual instruction parameters and return values
 */

/* vmnewmap arguments */

#define VM_TRANS_TYPE_LINEAR 0
#define VM_TRANS_TYPE_TABLE 1
#define VM_TLB_INVALIDATE_FALSE 0
#define VM_TLB_INVALIDATE_TRUE 1

/* vmsetie arguments */

#define VM_INT_DISABLE	0
#define VM_INT_ENABLE	1

/* vmsetimask arguments */

#define VM_INT_UNMASK	0
#define VM_INT_MASK	1

#define VM_NEWMAP_TYPE_LINEAR	0
#define VM_NEWMAP_TYPE_PGTABLES	1


/*
 * Event Record definitions useful to both C and Assembler
 */

/* VMEST Layout */

#define HVM_VMEST_UM_SFT	31
#define HVM_VMEST_UM_MSK	1
#define HVM_VMEST_IE_SFT	30
#define HVM_VMEST_IE_MSK	1
#define HVM_VMEST_SS_SFT	29
#define HVM_VMEST_SS_MSK	1
#define HVM_VMEST_EVENTNUM_SFT	16
#define HVM_VMEST_EVENTNUM_MSK	0xff
#define HVM_VMEST_CAUSE_SFT	0
#define HVM_VMEST_CAUSE_MSK	0xffff

/*
 * The initial program gets to find a system environment descriptor
 * on its stack when it begins exection. The first word is a version
 * code to indicate what is there.  Zero means nothing more.
 */

#define HEXAGON_VM_SED_NULL	0

/*
 * Event numbers for vector binding
 */

#define HVM_EV_RESET		0
#define HVM_EV_MACHCHECK	1
#define HVM_EV_GENEX		2
#define HVM_EV_TRAP		8
#define HVM_EV_INTR		15
/* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */
#define HVM_EV_INTR_0		16
#define HVM_MAX_INTR		240

/*
 * Cause values for General Exception
 */

#define HVM_GE_C_BUS	0x01
#define HVM_GE_C_XPROT	0x11
#define HVM_GE_C_XUSER	0x14
#define HVM_GE_C_INVI	0x15
#define HVM_GE_C_PRIVI	0x1B
#define HVM_GE_C_XMAL	0x1C
#define HVM_GE_C_WREG	0x1D
#define HVM_GE_C_PCAL	0x1E
#define HVM_GE_C_RMAL	0x20
#define HVM_GE_C_WMAL	0x21
#define HVM_GE_C_RPROT	0x22
#define HVM_GE_C_WPROT	0x23
#define HVM_GE_C_RUSER	0x24
#define HVM_GE_C_WUSER	0x25
#define HVM_GE_C_CACHE	0x28

/*
 * Cause codes for Machine Check
 */

#define	HVM_MCHK_C_DOWN		0x00
#define	HVM_MCHK_C_BADSP	0x01
#define	HVM_MCHK_C_BADEX	0x02
#define	HVM_MCHK_C_BADPT	0x03
#define	HVM_MCHK_C_REGWR	0x29

#endif