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-rw-r--r--arch/powerpc/platforms/pseries/hvCall.S273
1 files changed, 104 insertions, 169 deletions
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index c9ff547f9d25..c00cfed7af2c 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -1,7 +1,6 @@
1/* 1/*
2 * This file contains the generic code to perform a call to the 2 * This file contains the generic code to perform a call to the
3 * pSeries LPAR hypervisor. 3 * pSeries LPAR hypervisor.
4 * NOTE: this file will go away when we move to inline this work.
5 * 4 *
6 * This program is free software; you can redistribute it and/or 5 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License 6 * modify it under the terms of the GNU General Public License
@@ -11,217 +10,153 @@
11#include <asm/hvcall.h> 10#include <asm/hvcall.h>
12#include <asm/processor.h> 11#include <asm/processor.h>
13#include <asm/ppc_asm.h> 12#include <asm/ppc_asm.h>
13#include <asm/asm-offsets.h>
14 14
15#define STK_PARM(i) (48 + ((i)-3)*8) 15#define STK_PARM(i) (48 + ((i)-3)*8)
16 16
17 .text 17#ifdef CONFIG_HCALL_STATS
18 18/*
19/* long plpar_hcall(unsigned long opcode, R3 19 * precall must preserve all registers. use unused STK_PARM()
20 unsigned long arg1, R4 20 * areas to save snapshots and opcode.
21 unsigned long arg2, R5
22 unsigned long arg3, R6
23 unsigned long arg4, R7
24 unsigned long *out1, R8
25 unsigned long *out2, R9
26 unsigned long *out3); R10
27 */ 21 */
28_GLOBAL(plpar_hcall) 22#define HCALL_INST_PRECALL \
29 HMT_MEDIUM 23 std r3,STK_PARM(r3)(r1); /* save opcode */ \
30 24 mftb r0; /* get timebase and */ \
31 mfcr r0 25 std r0,STK_PARM(r5)(r1); /* save for later */ \
32 26BEGIN_FTR_SECTION; \
33 std r8,STK_PARM(r8)(r1) /* Save out ptrs */ 27 mfspr r0,SPRN_PURR; /* get PURR and */ \
34 std r9,STK_PARM(r9)(r1) 28 std r0,STK_PARM(r6)(r1); /* save for later */ \
35 std r10,STK_PARM(r10)(r1) 29END_FTR_SECTION_IFCLR(CPU_FTR_PURR);
36 30
37 stw r0,8(r1) 31/*
38 32 * postcall is performed immediately before function return which
39 HVSC /* invoke the hypervisor */ 33 * allows liberal use of volatile registers.
40 34 */
41 lwz r0,8(r1) 35#define HCALL_INST_POSTCALL \
42 36 ld r4,STK_PARM(r3)(r1); /* validate opcode */ \
43 ld r8,STK_PARM(r8)(r1) /* Fetch r4-r6 ret args */ 37 cmpldi cr7,r4,MAX_HCALL_OPCODE; \
44 ld r9,STK_PARM(r9)(r1) 38 bgt- cr7,1f; \
45 ld r10,STK_PARM(r10)(r1) 39 \
46 std r4,0(r8) 40 /* get time and PURR snapshots after hcall */ \
47 std r5,0(r9) 41 mftb r7; /* timebase after */ \
48 std r6,0(r10) 42BEGIN_FTR_SECTION; \
49 43 mfspr r8,SPRN_PURR; /* PURR after */ \
50 mtcrf 0xff,r0 44 ld r6,STK_PARM(r6)(r1); /* PURR before */ \
51 blr /* return r3 = status */ 45 subf r6,r6,r8; /* delta */ \
46END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
47 ld r5,STK_PARM(r5)(r1); /* timebase before */ \
48 subf r5,r5,r7; /* time delta */ \
49 \
50 /* calculate address of stat structure r4 = opcode */ \
51 srdi r4,r4,2; /* index into array */ \
52 mulli r4,r4,HCALL_STAT_SIZE; \
53 LOAD_REG_ADDR(r7, per_cpu__hcall_stats); \
54 add r4,r4,r7; \
55 ld r7,PACA_DATA_OFFSET(r13); /* per cpu offset */ \
56 add r4,r4,r7; \
57 \
58 /* update stats */ \
59 ld r7,HCALL_STAT_CALLS(r4); /* count */ \
60 addi r7,r7,1; \
61 std r7,HCALL_STAT_CALLS(r4); \
62 ld r7,HCALL_STAT_TB(r4); /* timebase */ \
63 add r7,r7,r5; \
64 std r7,HCALL_STAT_TB(r4); \
65BEGIN_FTR_SECTION; \
66 ld r7,HCALL_STAT_PURR(r4); /* PURR */ \
67 add r7,r7,r6; \
68 std r7,HCALL_STAT_PURR(r4); \
69END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
701:
71#else
72#define HCALL_INST_PRECALL
73#define HCALL_INST_POSTCALL
74#endif
52 75
76 .text
53 77
54/* Simple interface with no output values (other than status) */
55_GLOBAL(plpar_hcall_norets) 78_GLOBAL(plpar_hcall_norets)
56 HMT_MEDIUM 79 HMT_MEDIUM
57 80
58 mfcr r0 81 mfcr r0
59 stw r0,8(r1) 82 stw r0,8(r1)
60 83
61 HVSC /* invoke the hypervisor */ 84 HCALL_INST_PRECALL
62
63 lwz r0,8(r1)
64 mtcrf 0xff,r0
65 blr /* return r3 = status */
66
67
68/* long plpar_hcall_8arg_2ret(unsigned long opcode, R3
69 unsigned long arg1, R4
70 unsigned long arg2, R5
71 unsigned long arg3, R6
72 unsigned long arg4, R7
73 unsigned long arg5, R8
74 unsigned long arg6, R9
75 unsigned long arg7, R10
76 unsigned long arg8, 112(R1)
77 unsigned long *out1); 120(R1)
78 */
79_GLOBAL(plpar_hcall_8arg_2ret)
80 HMT_MEDIUM
81
82 mfcr r0
83 ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
84 stw r0,8(r1)
85 85
86 HVSC /* invoke the hypervisor */ 86 HVSC /* invoke the hypervisor */
87 87
88 HCALL_INST_POSTCALL
89
88 lwz r0,8(r1) 90 lwz r0,8(r1)
89 ld r10,STK_PARM(r12)(r1) /* Fetch r4 ret arg */
90 std r4,0(r10)
91 mtcrf 0xff,r0 91 mtcrf 0xff,r0
92 blr /* return r3 = status */ 92 blr /* return r3 = status */
93 93
94 94_GLOBAL(plpar_hcall)
95/* long plpar_hcall_4out(unsigned long opcode, R3
96 unsigned long arg1, R4
97 unsigned long arg2, R5
98 unsigned long arg3, R6
99 unsigned long arg4, R7
100 unsigned long *out1, R8
101 unsigned long *out2, R9
102 unsigned long *out3, R10
103 unsigned long *out4); 112(R1)
104 */
105_GLOBAL(plpar_hcall_4out)
106 HMT_MEDIUM 95 HMT_MEDIUM
107 96
108 mfcr r0 97 mfcr r0
109 stw r0,8(r1) 98 stw r0,8(r1)
110 99
111 std r8,STK_PARM(r8)(r1) /* Save out ptrs */ 100 HCALL_INST_PRECALL
112 std r9,STK_PARM(r9)(r1)
113 std r10,STK_PARM(r10)(r1)
114
115 HVSC /* invoke the hypervisor */
116
117 lwz r0,8(r1)
118 101
119 ld r8,STK_PARM(r8)(r1) /* Fetch r4-r7 ret args */ 102 std r4,STK_PARM(r4)(r1) /* Save ret buffer */
120 ld r9,STK_PARM(r9)(r1)
121 ld r10,STK_PARM(r10)(r1)
122 ld r11,STK_PARM(r11)(r1)
123 std r4,0(r8)
124 std r5,0(r9)
125 std r6,0(r10)
126 std r7,0(r11)
127 103
128 mtcrf 0xff,r0 104 mr r4,r5
129 blr /* return r3 = status */ 105 mr r5,r6
130 106 mr r6,r7
131/* plpar_hcall_7arg_7ret(unsigned long opcode, R3 107 mr r7,r8
132 unsigned long arg1, R4 108 mr r8,r9
133 unsigned long arg2, R5 109 mr r9,r10
134 unsigned long arg3, R6
135 unsigned long arg4, R7
136 unsigned long arg5, R8
137 unsigned long arg6, R9
138 unsigned long arg7, R10
139 unsigned long *out1, 112(R1)
140 unsigned long *out2, 110(R1)
141 unsigned long *out3, 108(R1)
142 unsigned long *out4, 106(R1)
143 unsigned long *out5, 104(R1)
144 unsigned long *out6, 102(R1)
145 unsigned long *out7); 100(R1)
146*/
147_GLOBAL(plpar_hcall_7arg_7ret)
148 HMT_MEDIUM
149
150 mfcr r0
151 stw r0,8(r1)
152 110
153 HVSC /* invoke the hypervisor */ 111 HVSC /* invoke the hypervisor */
154 112
155 lwz r0,8(r1) 113 ld r12,STK_PARM(r4)(r1)
114 std r4, 0(r12)
115 std r5, 8(r12)
116 std r6, 16(r12)
117 std r7, 24(r12)
156 118
157 ld r11,STK_PARM(r11)(r1) /* Fetch r4 ret arg */ 119 HCALL_INST_POSTCALL
158 std r4,0(r11)
159 ld r11,STK_PARM(r12)(r1) /* Fetch r5 ret arg */
160 std r5,0(r11)
161 ld r11,STK_PARM(r13)(r1) /* Fetch r6 ret arg */
162 std r6,0(r11)
163 ld r11,STK_PARM(r14)(r1) /* Fetch r7 ret arg */
164 std r7,0(r11)
165 ld r11,STK_PARM(r15)(r1) /* Fetch r8 ret arg */
166 std r8,0(r11)
167 ld r11,STK_PARM(r16)(r1) /* Fetch r9 ret arg */
168 std r9,0(r11)
169 ld r11,STK_PARM(r17)(r1) /* Fetch r10 ret arg */
170 std r10,0(r11)
171 120
121 lwz r0,8(r1)
172 mtcrf 0xff,r0 122 mtcrf 0xff,r0
173 123
174 blr /* return r3 = status */ 124 blr /* return r3 = status */
175 125
176/* plpar_hcall_9arg_9ret(unsigned long opcode, R3 126_GLOBAL(plpar_hcall9)
177 unsigned long arg1, R4
178 unsigned long arg2, R5
179 unsigned long arg3, R6
180 unsigned long arg4, R7
181 unsigned long arg5, R8
182 unsigned long arg6, R9
183 unsigned long arg7, R10
184 unsigned long arg8, 112(R1)
185 unsigned long arg9, 110(R1)
186 unsigned long *out1, 108(R1)
187 unsigned long *out2, 106(R1)
188 unsigned long *out3, 104(R1)
189 unsigned long *out4, 102(R1)
190 unsigned long *out5, 100(R1)
191 unsigned long *out6, 98(R1)
192 unsigned long *out7); 96(R1)
193 unsigned long *out8, 94(R1)
194 unsigned long *out9, 92(R1)
195*/
196_GLOBAL(plpar_hcall_9arg_9ret)
197 HMT_MEDIUM 127 HMT_MEDIUM
198 128
199 mfcr r0 129 mfcr r0
200 stw r0,8(r1) 130 stw r0,8(r1)
201 131
202 ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */ 132 HCALL_INST_PRECALL
203 ld r12,STK_PARM(r12)(r1) /* put arg9 in R12 */ 133
134 std r4,STK_PARM(r4)(r1) /* Save ret buffer */
135
136 mr r4,r5
137 mr r5,r6
138 mr r6,r7
139 mr r7,r8
140 mr r8,r9
141 mr r9,r10
142 ld r10,STK_PARM(r11)(r1) /* put arg7 in R10 */
143 ld r11,STK_PARM(r12)(r1) /* put arg8 in R11 */
144 ld r12,STK_PARM(r13)(r1) /* put arg9 in R12 */
204 145
205 HVSC /* invoke the hypervisor */ 146 HVSC /* invoke the hypervisor */
206 147
207 ld r0,STK_PARM(r13)(r1) /* Fetch r4 ret arg */ 148 ld r12,STK_PARM(r4)(r1)
208 stdx r4,r0,r0 149 std r4, 0(r12)
209 ld r0,STK_PARM(r14)(r1) /* Fetch r5 ret arg */ 150 std r5, 8(r12)
210 stdx r5,r0,r0 151 std r6, 16(r12)
211 ld r0,STK_PARM(r15)(r1) /* Fetch r6 ret arg */ 152 std r7, 24(r12)
212 stdx r6,r0,r0 153 std r8, 32(r12)
213 ld r0,STK_PARM(r16)(r1) /* Fetch r7 ret arg */ 154 std r9, 40(r12)
214 stdx r7,r0,r0 155 std r10,48(r12)
215 ld r0,STK_PARM(r17)(r1) /* Fetch r8 ret arg */ 156 std r11,56(r12)
216 stdx r8,r0,r0 157 std r12,64(r12)
217 ld r0,STK_PARM(r18)(r1) /* Fetch r9 ret arg */ 158
218 stdx r9,r0,r0 159 HCALL_INST_POSTCALL
219 ld r0,STK_PARM(r19)(r1) /* Fetch r10 ret arg */
220 stdx r10,r0,r0
221 ld r0,STK_PARM(r20)(r1) /* Fetch r11 ret arg */
222 stdx r11,r0,r0
223 ld r0,STK_PARM(r21)(r1) /* Fetch r12 ret arg */
224 stdx r12,r0,r0
225 160
226 lwz r0,8(r1) 161 lwz r0,8(r1)
227 mtcrf 0xff,r0 162 mtcrf 0xff,r0
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