xref: /titanic_51/usr/src/uts/sun4u/starcat/ml/drmach.il.cpp (revision 37714ae43602c675f9dc59b070bfdf9fa702872c)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*
30  * This file is through cpp before being used as
31  * an inline.  It contains support routines used
32  * only by DR for the copy-rename sequence.
33  */
34 
35 #if defined(lint)
36 #include <sys/types.h>
37 #endif /* lint */
38 
39 #include <sys/sun4asi.h>
40 #include <sys/privregs.h>
41 #include <sys/cheetahregs.h>
42 #include <sys/machparam.h>
43 #include <sys/machthread.h>
44 #include <sys/mmu.h>
45 #include <sys/cheetahasm.h>
46 
47 #if defined(lint)
48 
49 /*ARGSUSED*/
50 void
51 bcopy32_il(uint64_t paddr1, uint64_t paddr2)
52 {}
53 
54 void
55 flush_dcache_il(void)
56 {}
57 
58 void
59 flush_icache_il(void)
60 {}
61 
62 void
63 flush_pcache_il(void)
64 {}
65 
66 /*ARGSUSED*/
67 void
68 flush_ecache_il(uint64_t physaddr, uint_t size, uint_t linesz)
69 {}
70 
71 #else /* lint */
72 
73 	!
74 	! bcopy32_il
75 	!
76 	! input:
77 	!	%o0	source PA
78 	!	%o1	destination PA
79 	!
80 	! returns:
81 	!	nothing
82 	!
83 	! A simple copy routine that copies 32 bytes using physical
84 	! addresses. Used by drmach_copy_rename() to copy permanent
85 	! memory. Assumes domain is quiesced and addresses are
86 	! aligned appropriately.
87 	!
88 	! Derived from Starfire DR 2.6 version of bcopy32_il.
89 	!
90 	! NOTE: The rdpr instruction executes as a noop. It has no
91 	! runtime value or purpose. It exists here solely for its
92 	! magical property that protects bcopy32_il from the
93 	! actions of Sun Pro's code generator. The ldxa instructions
94 	! used in this inline are not supported by the inline feature
95 	! of the Sun Pro 5.0 product. See inline(1) for details.
96 	! Without the rdpr, the code generator improperly rewrites
97 	! the instructions and emits a misrepresentation of the logic.
98 	!
99 	.inline bcopy32_il, 0
100 	rdpr	%pstate, %g0		! See note.
101         ldxa    [%o0]ASI_MEM, %o2
102 	add	%o0, 8, %o0
103         ldxa    [%o0]ASI_MEM, %o3
104 	add	%o0, 8, %o0
105         ldxa    [%o0]ASI_MEM, %o4
106 	add	%o0, 8, %o0
107         ldxa    [%o0]ASI_MEM, %o5
108 	stxa    %o2, [%o1]ASI_MEM
109 	add	%o1, 8, %o1
110 	stxa    %o3, [%o1]ASI_MEM
111 	add	%o1, 8, %o1
112 	stxa    %o4, [%o1]ASI_MEM
113 	add	%o1, 8, %o1
114 	stxa    %o5, [%o1]ASI_MEM
115 	.end
116 
117 	!
118 	! flush_dcache_il
119 	!
120 	! input:
121 	!	nothing
122 	!
123 	! output:
124 	!	nothing
125 	!
126 	! Flushes data cache. Used by drmach_copy_rename() after
127 	! the rename step to ensure the data cache tags and mtags
128 	! are properly synchronized. Assumes domain is quiesced.
129 	!
130 	.inline	flush_dcache_il, 0
131 	set	dcache_size, %o0
132 	ld	[%o0], %o0
133 	set	dcache_linesize, %o1
134 	ld	[%o1], %o1
135 	CH_DCACHE_FLUSHALL(%o0, %o1, %o2)
136 	.end
137 
138 	!
139 	! flush_icache_il
140 	!
141 	! input:
142 	!	nothing
143 	!
144 	! output:
145 	!	nothing
146 	!
147 	! Flushes instruction cache. Used by drmach_copy_rename()
148 	! after the rename step to ensure the instruction cache tags
149 	! and mtags are properly synchronized. Assumes domain is
150 	! quiesced.
151 	!
152 	! Panther has a larger Icache compared to Cheetahplus or Jaguar.
153 	!
154 	.inline flush_icache_il, 0
155 	GET_CPU_IMPL(%o0)
156 	cmp	%o0, PANTHER_IMPL
157 	bne	%xcc, 1f
158 	  nop
159 	set	PN_ICACHE_SIZE, %o0
160 	set	PN_ICACHE_LSIZE, %o1
161 	ba	2f
162 	  nop
163 1:
164 	set	CH_ICACHE_SIZE, %o0
165 	set	CH_ICACHE_LSIZE, %o1
166 2:
167 	CH_ICACHE_FLUSHALL(%o0, %o1, %o2, %o3)
168 	.end
169 
170 	!
171 	! flush_pcache_il
172 	!
173 	! input:
174 	!	nothing
175 	!
176 	! output:
177 	!	nothing
178 	!
179 	! Flushes prefetch cache. Used by drmach_copy_rename() after
180 	! the rename step to ensure the prefetch cache tags and mtags
181 	! are properly synchronized. Assumes domain is quiesced.
182 	!
183 	.inline	flush_pcache_il, 0
184 	PCACHE_FLUSHALL(%o1, %o2, %o3)
185 	.end
186 
187 	!
188 	! flush_ecache_il
189 	!
190 	! input:
191 	!	%o0	PA of flush span
192 	!	%o1	size of this processor's E$
193 	!	%o2	line size of this processor's E$
194 	!
195 	! output:
196 	!	nothing
197 	!
198 	! Flushes external cache. Used by drmach_copy_rename() after
199 	! the rename step to ensure the external cache tags and mtags
200 	! are properly synchronized. Assumes domain is quiesced.
201 	!
202 	! Panther needs to flush L2 cache before L3 cache.
203 	!
204 	.inline flush_ecache_il, 0
205         PN_L2_FLUSHALL(%o3, %o4, %o5)
206 	ECACHE_FLUSHALL(%o1, %o2, %o0, %o3)
207 	.end
208 
209 #endif /* lint */
210 
211