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1 | /* |
2 | * ========== Copyright Header Begin ========================================== | |
3 | * | |
4 | * Hypervisor Software File: prom_mem.c | |
5 | * | |
6 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
7 | * | |
8 | * - Do no alter or remove copyright notices | |
9 | * | |
10 | * - Redistribution and use of this software in source and binary forms, with | |
11 | * or without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistribution of source code must retain the above copyright notice, | |
15 | * this list of conditions and the following disclaimer. | |
16 | * | |
17 | * - Redistribution in binary form must reproduce the above copyright notice, | |
18 | * this list of conditions and the following disclaimer in the | |
19 | * documentation and/or other materials provided with the distribution. | |
20 | * | |
21 | * Neither the name of Sun Microsystems, Inc. or the names of contributors | |
22 | * may be used to endorse or promote products derived from this software | |
23 | * without specific prior written permission. | |
24 | * | |
25 | * This software is provided "AS IS," without a warranty of any kind. | |
26 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
27 | * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
28 | * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
29 | * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
30 | * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
31 | * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
32 | * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
33 | * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
34 | * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
35 | * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
36 | * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
37 | * | |
38 | * You acknowledge that this software is not designed, licensed or | |
39 | * intended for use in the design, construction, operation or maintenance of | |
40 | * any nuclear facility. | |
41 | * | |
42 | * ========== Copyright Header End ============================================ | |
43 | */ | |
44 | /* | |
45 | * Copyright (c) 2000-2003 Sun Microsystems, Inc. | |
46 | * All rights reserved. | |
47 | * Use is subject to license terms. | |
48 | */ | |
49 | ||
50 | #pragma ident "@(#)prom_mem.c 1.1 00/08/07 SMI" | |
51 | ||
52 | /* | |
53 | * This file contains platform-dependent memory support routines, | |
54 | * suitable for memory methods with 2-cell physical addresses. | |
55 | * Use of these routines makes the caller platform-dependent, | |
56 | * since the caller assumes knowledge of the physical layout of | |
57 | * the machines address space. Generic programs should use the | |
58 | * standard client interface memory allocators. | |
59 | */ | |
60 | ||
61 | #include <sys/promif.h> | |
62 | #include <sys/promimpl.h> | |
63 | ||
64 | ihandle_t | |
65 | prom_memory_ihandle(void) | |
66 | { | |
67 | static ihandle_t imemory; | |
68 | ||
69 | if (imemory != (ihandle_t)0) | |
70 | return (imemory); | |
71 | ||
72 | if (prom_getproplen(prom_chosennode(), "memory") != sizeof (ihandle_t)) | |
73 | return (imemory = (ihandle_t)-1); | |
74 | ||
75 | (void) prom_getprop(prom_chosennode(), "memory", (caddr_t)(&imemory)); | |
76 | imemory = (ihandle_t)prom_decode_int(imemory); | |
77 | return (imemory); | |
78 | } | |
79 | ||
80 | /* | |
81 | * Allocate physical memory, unmapped and possibly aligned. | |
82 | * Returns 0: Success; Non-zero: failure. | |
83 | * Returns *physaddr only if successful. | |
84 | * | |
85 | * This routine is suitable for platforms with 2-cell physical addresses | |
86 | * and a single size cell in the "memory" node. | |
87 | */ | |
88 | int | |
89 | prom_allocate_phys(size_t size, uint32_t align, u_longlong_t *physaddr) | |
90 | { | |
91 | cell_t ci[10]; | |
92 | int32_t rv; | |
93 | ihandle_t imemory = prom_memory_ihandle(); | |
94 | ||
95 | if ((imemory == (ihandle_t)-1)) | |
96 | return (-1); | |
97 | ||
98 | if (align == 0) | |
99 | align = (uint32_t)1; | |
100 | ||
101 | ci[0] = p1275_ptr2cell("call-method"); /* Service name */ | |
102 | ci[1] = (cell_t)4; /* #argument cells */ | |
103 | ci[2] = (cell_t)3; /* #result cells */ | |
104 | ci[3] = p1275_ptr2cell("claim"); /* Arg1: Method name */ | |
105 | ci[4] = p1275_ihandle2cell(imemory); /* Arg2: memory ihandle */ | |
106 | ci[5] = p1275_uint2cell(align); /* Arg3: SA1: align */ | |
107 | ci[6] = p1275_size2cell(size); /* Arg4: SA2: size */ | |
108 | ||
109 | rv = p1275_cif_handler(&ci); | |
110 | ||
111 | if (rv != 0) | |
112 | return (rv); | |
113 | if (p1275_cell2int(ci[7]) != 0) /* Res1: Catch result */ | |
114 | return (-1); | |
115 | ||
116 | *physaddr = p1275_cells2ull(ci[8], ci[9]); | |
117 | /* Res2: SR1: phys.hi ... Res3: SR2: phys.lo */ | |
118 | return (0); | |
119 | } | |
120 | ||
121 | /* | |
122 | * Claim a region of physical memory, unmapped. | |
123 | * Returns 0: Success; Non-zero: failure. | |
124 | * | |
125 | * This routine is suitable for platforms with 2-cell physical addresses | |
126 | * and a single size cell in the "memory" node. | |
127 | */ | |
128 | int | |
129 | prom_claim_phys(size_t size, u_longlong_t physaddr) | |
130 | { | |
131 | cell_t ci[10]; | |
132 | int32_t rv; | |
133 | ihandle_t imemory = prom_memory_ihandle(); | |
134 | ||
135 | if ((imemory == (ihandle_t)-1)) | |
136 | return (-1); | |
137 | ||
138 | ci[0] = p1275_ptr2cell("call-method"); /* Service name */ | |
139 | ci[1] = (cell_t)6; /* #argument cells */ | |
140 | ci[2] = (cell_t)1; /* #result cells */ | |
141 | ci[3] = p1275_ptr2cell("claim"); /* Arg1: Method name */ | |
142 | ci[4] = p1275_ihandle2cell(imemory); /* Arg2: mmu ihandle */ | |
143 | ci[5] = 0; /* Arg3: SA1: align */ | |
144 | ci[6] = p1275_size2cell(size); /* Arg4: SA2: len */ | |
145 | ci[7] = p1275_ull2cell_high(physaddr); /* Arg5: SA3: phys.hi */ | |
146 | ci[8] = p1275_ull2cell_low(physaddr); /* Arg6: SA4: phys.lo */ | |
147 | ||
148 | rv = p1275_cif_handler(&ci); | |
149 | ||
150 | if (rv != 0) | |
151 | return (rv); | |
152 | if (p1275_cell2int(ci[9]) != 0) /* Res1: Catch result */ | |
153 | return (-1); | |
154 | ||
155 | return (0); | |
156 | } | |
157 | ||
158 | /* | |
159 | * Free physical memory (no unmapping is done). | |
160 | * This routine is suitable for platforms with 2-cell physical addresses | |
161 | * with a single size cell. | |
162 | */ | |
163 | void | |
164 | prom_free_phys(size_t size, u_longlong_t physaddr) | |
165 | { | |
166 | cell_t ci[8]; | |
167 | ihandle_t imemory = prom_memory_ihandle(); | |
168 | ||
169 | if ((imemory == (ihandle_t)-1)) | |
170 | return; | |
171 | ||
172 | ci[0] = p1275_ptr2cell("call-method"); /* Service name */ | |
173 | ci[1] = (cell_t)5; /* #argument cells */ | |
174 | ci[2] = (cell_t)0; /* #return cells */ | |
175 | ci[3] = p1275_ptr2cell("release"); /* Arg1: Method name */ | |
176 | ci[4] = p1275_ihandle2cell(imemory); /* Arg2: memory ihandle */ | |
177 | ci[5] = p1275_size2cell(size); /* Arg3: SA1: size */ | |
178 | ci[6] = p1275_ull2cell_high(physaddr); /* Arg4: SA2: phys.hi */ | |
179 | ci[7] = p1275_ull2cell_low(physaddr); /* Arg5: SA3: phys.lo */ | |
180 | ||
181 | (void) p1275_cif_handler(&ci); | |
182 | } |