summaryrefslogtreecommitdiffstats
path: root/arch/ia64/kernel/paravirt.c
blob: 6bc33a6db755c2a351f32be3266a28147fe78017 (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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
/******************************************************************************
 * arch/ia64/kernel/paravirt.c
 *
 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
 *                    VA Linux Systems Japan K.K.
 *     Yaozu (Eddie) Dong <eddie.dong@intel.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/init.h>

#include <linux/compiler.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/types.h>

#include <asm/iosapic.h>
#include <asm/paravirt.h>

/***************************************************************************
 * general info
 */
struct pv_info pv_info = {
	.kernel_rpl = 0,
	.paravirt_enabled = 0,
	.name = "bare hardware"
};

/***************************************************************************
 * pv_init_ops
 * initialization hooks.
 */

struct pv_init_ops pv_init_ops;

/***************************************************************************
 * pv_cpu_ops
 * intrinsics hooks.
 */

/* ia64_native_xxx are macros so that we have to make them real functions */

#define DEFINE_VOID_FUNC1(name)					\
	static void						\
	ia64_native_ ## name ## _func(unsigned long arg)	\
	{							\
		ia64_native_ ## name(arg);			\
	}							\

#define DEFINE_VOID_FUNC2(name)					\
	static void						\
	ia64_native_ ## name ## _func(unsigned long arg0,	\
				      unsigned long arg1)	\
	{							\
		ia64_native_ ## name(arg0, arg1);		\
	}							\

#define DEFINE_FUNC0(name)			\
	static unsigned long			\
	ia64_native_ ## name ## _func(void)	\
	{					\
		return ia64_native_ ## name();	\
	}

#define DEFINE_FUNC1(name, type)			\
	static unsigned long				\
	ia64_native_ ## name ## _func(type arg)		\
	{						\
		return ia64_native_ ## name(arg);	\
	}						\

DEFINE_VOID_FUNC1(fc);
DEFINE_VOID_FUNC1(intrin_local_irq_restore);

DEFINE_VOID_FUNC2(ptcga);
DEFINE_VOID_FUNC2(set_rr);

DEFINE_FUNC0(get_psr_i);

DEFINE_FUNC1(thash, unsigned long);
DEFINE_FUNC1(get_cpuid, int);
DEFINE_FUNC1(get_pmd, int);
DEFINE_FUNC1(get_rr, unsigned long);

static void
ia64_native_ssm_i_func(void)
{
	ia64_native_ssm(IA64_PSR_I);
}

static void
ia64_native_rsm_i_func(void)
{
	ia64_native_rsm(IA64_PSR_I);
}

static void
ia64_native_set_rr0_to_rr4_func(unsigned long val0, unsigned long val1,
				unsigned long val2, unsigned long val3,
				unsigned long val4)
{
	ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4);
}

#define CASE_GET_REG(id)				\
	case _IA64_REG_ ## id:				\
	res = ia64_native_getreg(_IA64_REG_ ## id);	\
	break;
#define CASE_GET_AR(id) CASE_GET_REG(AR_ ## id)
#define CASE_GET_CR(id) CASE_GET_REG(CR_ ## id)

unsigned long
ia64_native_getreg_func(int regnum)
{
	unsigned long res = -1;
	switch (regnum) {
	CASE_GET_REG(GP);
	/*CASE_GET_REG(IP);*/ /* returned ip value shouldn't be constant */
	CASE_GET_REG(PSR);
	CASE_GET_REG(TP);
	CASE_GET_REG(SP);

	CASE_GET_AR(KR0);
	CASE_GET_AR(KR1);
	CASE_GET_AR(KR2);
	CASE_GET_AR(KR3);
	CASE_GET_AR(KR4);
	CASE_GET_AR(KR5);
	CASE_GET_AR(KR6);
	CASE_GET_AR(KR7);
	CASE_GET_AR(RSC);
	CASE_GET_AR(BSP);
	CASE_GET_AR(BSPSTORE);
	CASE_GET_AR(RNAT);
	CASE_GET_AR(FCR);
	CASE_GET_AR(EFLAG);
	CASE_GET_AR(CSD);
	CASE_GET_AR(SSD);
	CASE_GET_AR(CFLAG);
	CASE_GET_AR(FSR);
	CASE_GET_AR(FIR);
	CASE_GET_AR(FDR);
	CASE_GET_AR(CCV);
	CASE_GET_AR(UNAT);
	CASE_GET_AR(FPSR);
	CASE_GET_AR(ITC);
	CASE_GET_AR(PFS);
	CASE_GET_AR(LC);
	CASE_GET_AR(EC);

	CASE_GET_CR(DCR);
	CASE_GET_CR(ITM);
	CASE_GET_CR(IVA);
	CASE_GET_CR(PTA);
	CASE_GET_CR(IPSR);
	CASE_GET_CR(ISR);
	CASE_GET_CR(IIP);
	CASE_GET_CR(IFA);
	CASE_GET_CR(ITIR);
	CASE_GET_CR(IIPA);
	CASE_GET_CR(IFS);
	CASE_GET_CR(IIM);
	CASE_GET_CR(IHA);
	CASE_GET_CR(LID);
	CASE_GET_CR(IVR);
	CASE_GET_CR(TPR);
	CASE_GET_CR(EOI);
	CASE_GET_CR(IRR0);
	CASE_GET_CR(IRR1);
	CASE_GET_CR(IRR2);
	CASE_GET_CR(IRR3);
	CASE_GET_CR(ITV);
	CASE_GET_CR(PMV);
	CASE_GET_CR(CMCV);
	CASE_GET_CR(LRR0);
	CASE_GET_CR(LRR1);

	default:
		printk(KERN_CRIT "wrong_getreg %d\n", regnum);
		break;
	}
	return res;
}

#define CASE_SET_REG(id)				\
	case _IA64_REG_ ## id:				\
	ia64_native_setreg(_IA64_REG_ ## id, val);	\
	break;
#define CASE_SET_AR(id) CASE_SET_REG(AR_ ## id)
#define CASE_SET_CR(id) CASE_SET_REG(CR_ ## id)

void
ia64_native_setreg_func(int regnum, unsigned long val)
{
	switch (regnum) {
	case _IA64_REG_PSR_L:
		ia64_native_setreg(_IA64_REG_PSR_L, val);
		ia64_dv_serialize_data();
		break;
	CASE_SET_REG(SP);
	CASE_SET_REG(GP);

	CASE_SET_AR(KR0);
	CASE_SET_AR(KR1);
	CASE_SET_AR(KR2);
	CASE_SET_AR(KR3);
	CASE_SET_AR(KR4);
	CASE_SET_AR(KR5);
	CASE_SET_AR(KR6);
	CASE_SET_AR(KR7);
	CASE_SET_AR(RSC);
	CASE_SET_AR(BSP);
	CASE_SET_AR(BSPSTORE);
	CASE_SET_AR(RNAT);
	CASE_SET_AR(FCR);
	CASE_SET_AR(EFLAG);
	CASE_SET_AR(CSD);
	CASE_SET_AR(SSD);
	CASE_SET_AR(CFLAG);
	CASE_SET_AR(FSR);
	CASE_SET_AR(FIR);
	CASE_SET_AR(FDR);
	CASE_SET_AR(CCV);
	CASE_SET_AR(UNAT);
	CASE_SET_AR(FPSR);
	CASE_SET_AR(ITC);
	CASE_SET_AR(PFS);
	CASE_SET_AR(LC);
	CASE_SET_AR(EC);

	CASE_SET_CR(DCR);
	CASE_SET_CR(ITM);
	CASE_SET_CR(IVA);
	CASE_SET_CR(PTA);
	CASE_SET_CR(IPSR);
	CASE_SET_CR(ISR);
	CASE_SET_CR(IIP);
	CASE_SET_CR(IFA);
	CASE_SET_CR(ITIR);
	CASE_SET_CR(IIPA);
	CASE_SET_CR(IFS);
	CASE_SET_CR(IIM);
	CASE_SET_CR(IHA);
	CASE_SET_CR(LID);
	CASE_SET_CR(IVR);
	CASE_SET_CR(TPR);
	CASE_SET_CR(EOI);
	CASE_SET_CR(IRR0);
	CASE_SET_CR(IRR1);
	CASE_SET_CR(IRR2);
	CASE_SET_CR(IRR3);
	CASE_SET_CR(ITV);
	CASE_SET_CR(PMV);
	CASE_SET_CR(CMCV);
	CASE_SET_CR(LRR0);
	CASE_SET_CR(LRR1);
	default:
		printk(KERN_CRIT "wrong setreg %d\n", regnum);
		break;
	}
}

struct pv_cpu_ops pv_cpu_ops = {
	.fc		= ia64_native_fc_func,
	.thash		= ia64_native_thash_func,
	.get_cpuid	= ia64_native_get_cpuid_func,
	.get_pmd	= ia64_native_get_pmd_func,
	.ptcga		= ia64_native_ptcga_func,
	.get_rr		= ia64_native_get_rr_func,
	.set_rr		= ia64_native_set_rr_func,
	.set_rr0_to_rr4	= ia64_native_set_rr0_to_rr4_func,
	.ssm_i		= ia64_native_ssm_i_func,
	.getreg		= ia64_native_getreg_func,
	.setreg		= ia64_native_setreg_func,
	.rsm_i		= ia64_native_rsm_i_func,
	.get_psr_i	= ia64_native_get_psr_i_func,
	.intrin_local_irq_restore
			= ia64_native_intrin_local_irq_restore_func,
};
EXPORT_SYMBOL(pv_cpu_ops);

/******************************************************************************
 * replacement of hand written assembly codes.
 */

void
paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch)
{
	extern unsigned long paravirt_switch_to_targ;
	extern unsigned long paravirt_leave_syscall_targ;
	extern unsigned long paravirt_work_processed_syscall_targ;
	extern unsigned long paravirt_leave_kernel_targ;

	paravirt_switch_to_targ = cpu_asm_switch->switch_to;
	paravirt_leave_syscall_targ = cpu_asm_switch->leave_syscall;
	paravirt_work_processed_syscall_targ =
		cpu_asm_switch->work_processed_syscall;
	paravirt_leave_kernel_targ = cpu_asm_switch->leave_kernel;
}

/***************************************************************************
 * pv_iosapic_ops
 * iosapic read/write hooks.
 */

static unsigned int
ia64_native_iosapic_read(char __iomem *iosapic, unsigned int reg)
{
	return __ia64_native_iosapic_read(iosapic, reg);
}

static void
ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
{
	__ia64_native_iosapic_write(iosapic, reg, val);
}

struct pv_iosapic_ops pv_iosapic_ops = {
	.pcat_compat_init = ia64_native_iosapic_pcat_compat_init,
	.__get_irq_chip = ia64_native_iosapic_get_irq_chip,

	.__read = ia64_native_iosapic_read,
	.__write = ia64_native_iosapic_write,
};

/***************************************************************************
 * pv_irq_ops
 * irq operations
 */

struct pv_irq_ops pv_irq_ops = {
	.register_ipi = ia64_native_register_ipi,

	.assign_irq_vector = ia64_native_assign_irq_vector,
	.free_irq_vector = ia64_native_free_irq_vector,
	.register_percpu_irq = ia64_native_register_percpu_irq,

	.resend_irq = ia64_native_resend_irq,
};

/***************************************************************************
 * pv_time_ops
 * time operations
 */

static int
ia64_native_do_steal_accounting(unsigned long *new_itm)
{
	return 0;
}

struct pv_time_ops pv_time_ops = {
	.do_steal_accounting = ia64_native_do_steal_accounting,
	.sched_clock = ia64_native_sched_clock,
};
OpenPOWER on IntegriCloud