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
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file contains platform-dependent memory support routines,
* suitable for memory methods with 2-cell physical addresses.
* Use of these routines makes the caller platform-dependent,
* since the caller assumes knowledge of the physical layout of
* the machines address space. Generic programs should use the
* standard client interface memory allocators.
*/
#include <sys/promif.h>
#include <sys/promimpl.h>
ihandle_t
prom_memory_ihandle(void)
{
static ihandle_t imemory;
if (imemory != (ihandle_t)0)
return (imemory);
if (prom_getproplen(prom_chosennode(), "memory") != sizeof (ihandle_t))
return (imemory = (ihandle_t)-1);
(void) prom_getprop(prom_chosennode(), "memory", (caddr_t)(&imemory));
return (imemory);
}
/*
* Allocate physical memory, unmapped and possibly aligned.
* Returns 0: Success; Non-zero: failure.
* Returns *physaddr only if successful.
*
* This routine is suitable for platforms with 2-cell physical addresses
* and a single size cell in the "memory" node.
*/
int
prom_allocate_phys(size_t size, uint_t align, unsigned long long *physaddr)
{
cell_t ci[10];
int rv;
ihandle_t imemory = prom_memory_ihandle();
if ((imemory == (ihandle_t)-1))
return (-1);
if (align == 0)
align = (uint_t)1;
ci[0] = p1275_ptr2cell("call-method"); /* Service name */
ci[1] = (cell_t)4; /* #argument cells */
ci[2] = (cell_t)3; /* #result cells */
ci[3] = p1275_ptr2cell("claim"); /* Arg1: Method name */
ci[4] = p1275_ihandle2cell(imemory); /* Arg2: memory ihandle */
ci[5] = p1275_uint2cell(align); /* Arg3: SA1: align */
ci[6] = p1275_size2cell(size); /* Arg4: SA2: size */
promif_preprom();
rv = p1275_cif_handler(&ci);
promif_postprom();
if (rv != 0)
return (rv);
if (p1275_cell2int(ci[7]) != 0) /* Res1: Catch result */
return (-1);
*physaddr = p1275_cells2ull(ci[8], ci[9]);
/* Res2: SR1: phys.hi ... Res3: SR2: phys.lo */
return (0);
}
/*
* Claim a region of physical memory, unmapped.
* Returns 0: Success; Non-zero: failure.
*
* This routine is suitable for platforms with 2-cell physical addresses
* and a single size cell in the "memory" node.
*/
int
prom_claim_phys(size_t size, unsigned long long physaddr)
{
cell_t ci[10];
int rv;
ihandle_t imemory = prom_memory_ihandle();
if ((imemory == (ihandle_t)-1))
return (-1);
ci[0] = p1275_ptr2cell("call-method"); /* Service name */
ci[1] = (cell_t)6; /* #argument cells */
ci[2] = (cell_t)1; /* #result cells */
ci[3] = p1275_ptr2cell("claim"); /* Arg1: Method name */
ci[4] = p1275_ihandle2cell(imemory); /* Arg2: mmu ihandle */
ci[5] = 0; /* Arg3: SA1: align */
ci[6] = p1275_size2cell(size); /* Arg4: SA2: len */
ci[7] = p1275_ull2cell_high(physaddr); /* Arg5: SA3: phys.hi */
ci[8] = p1275_ull2cell_low(physaddr); /* Arg6: SA4: phys.lo */
promif_preprom();
rv = p1275_cif_handler(&ci);
promif_postprom();
if (rv != 0)
return (rv);
if (p1275_cell2int(ci[9]) != 0) /* Res1: Catch result */
return (-1);
return (0);
}
/*
* Free physical memory (no unmapping is done).
* This routine is suitable for platforms with 2-cell physical addresses
* with a single size cell.
*/
void
prom_free_phys(size_t size, unsigned long long physaddr)
{
cell_t ci[8];
ihandle_t imemory = prom_memory_ihandle();
if ((imemory == (ihandle_t)-1))
return;
ci[0] = p1275_ptr2cell("call-method"); /* Service name */
ci[1] = (cell_t)5; /* #argument cells */
ci[2] = (cell_t)0; /* #return cells */
ci[3] = p1275_ptr2cell("release"); /* Arg1: Method name */
ci[4] = p1275_ihandle2cell(imemory); /* Arg2: memory ihandle */
ci[5] = p1275_size2cell(size); /* Arg3: SA1: size */
ci[6] = p1275_ull2cell_high(physaddr); /* Arg4: SA2: phys.hi */
ci[7] = p1275_ull2cell_low(physaddr); /* Arg5: SA3: phys.lo */
promif_preprom();
(void) p1275_cif_handler(&ci);
promif_postprom();
}
static pnode_t
prom_mem_phandle(void)
{
static pnode_t pmem = 0;
if (pmem == (pnode_t)0) {
ihandle_t ih;
if ((ih = prom_memory_ihandle()) == (ihandle_t)-1)
prom_panic("Can't get memory ihandle");
pmem = prom_getphandle(ih);
}
return (pmem);
}
int
prom_phys_installed_len(void)
{
return (prom_getproplen(prom_mem_phandle(), "reg"));
}
int
prom_phys_avail_len(void)
{
return (prom_getproplen(prom_mem_phandle(), "available"));
}
int
prom_phys_installed(caddr_t prop)
{
return (prom_getprop(prom_mem_phandle(), "reg", prop));
}
int
prom_phys_avail(caddr_t prop)
{
return (prom_getprop(prom_mem_phandle(), "available", prop));
}
|
