powerpc/pseries: Update CPU maps when device tree is updated
[~shefty/rdma-dev.git] / arch / powerpc / platforms / pseries / firmware.c
1 /*
2  *  pSeries firmware setup code.
3  *
4  *  Portions from arch/powerpc/platforms/pseries/setup.c:
5  *   Copyright (C) 1995  Linus Torvalds
6  *   Adapted from 'alpha' version by Gary Thomas
7  *   Modified by Cort Dougan (cort@cs.nmt.edu)
8  *   Modified by PPC64 Team, IBM Corp
9  *
10  *  Portions from arch/powerpc/kernel/firmware.c
11  *   Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
12  *   Modifications for ppc64:
13  *    Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
14  *    Copyright (C) 2005 Stephen Rothwell, IBM Corporation
15  *
16  *  Copyright 2006 IBM Corporation.
17  *
18  * This program is free software; you can redistribute it and/or
19  * modify it under the terms of the GNU General Public License
20  * as published by the Free Software Foundation; either version
21  * 2 of the License, or (at your option) any later version.
22  */
23
24
25 #include <asm/firmware.h>
26 #include <asm/prom.h>
27 #include <asm/udbg.h>
28
29 #include "pseries.h"
30
31 struct hypertas_fw_feature {
32     unsigned long val;
33     char * name;
34 };
35
36 /*
37  * The names in this table match names in rtas/ibm,hypertas-functions.  If the
38  * entry ends in a '*', only upto the '*' is matched.  Otherwise the entire
39  * string must match.
40  */
41 static __initdata struct hypertas_fw_feature
42 hypertas_fw_features_table[] = {
43         {FW_FEATURE_PFT,                "hcall-pft"},
44         {FW_FEATURE_TCE,                "hcall-tce"},
45         {FW_FEATURE_SPRG0,              "hcall-sprg0"},
46         {FW_FEATURE_DABR,               "hcall-dabr"},
47         {FW_FEATURE_COPY,               "hcall-copy"},
48         {FW_FEATURE_ASR,                "hcall-asr"},
49         {FW_FEATURE_DEBUG,              "hcall-debug"},
50         {FW_FEATURE_PERF,               "hcall-perf"},
51         {FW_FEATURE_DUMP,               "hcall-dump"},
52         {FW_FEATURE_INTERRUPT,          "hcall-interrupt"},
53         {FW_FEATURE_MIGRATE,            "hcall-migrate"},
54         {FW_FEATURE_PERFMON,            "hcall-perfmon"},
55         {FW_FEATURE_CRQ,                "hcall-crq"},
56         {FW_FEATURE_VIO,                "hcall-vio"},
57         {FW_FEATURE_RDMA,               "hcall-rdma"},
58         {FW_FEATURE_LLAN,               "hcall-lLAN"},
59         {FW_FEATURE_BULK_REMOVE,        "hcall-bulk"},
60         {FW_FEATURE_XDABR,              "hcall-xdabr"},
61         {FW_FEATURE_MULTITCE,           "hcall-multi-tce"},
62         {FW_FEATURE_SPLPAR,             "hcall-splpar"},
63         {FW_FEATURE_VPHN,               "hcall-vphn"},
64         {FW_FEATURE_SET_MODE,           "hcall-set-mode"},
65         {FW_FEATURE_BEST_ENERGY,        "hcall-best-energy-1*"},
66 };
67
68 /* Build up the firmware features bitmask using the contents of
69  * device-tree/ibm,hypertas-functions.  Ultimately this functionality may
70  * be moved into prom.c prom_init().
71  */
72 void __init fw_hypertas_feature_init(const char *hypertas, unsigned long len)
73 {
74         const char *s;
75         int i;
76
77         pr_debug(" -> fw_hypertas_feature_init()\n");
78
79         for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) {
80                 for (i = 0; i < ARRAY_SIZE(hypertas_fw_features_table); i++) {
81                         const char *name = hypertas_fw_features_table[i].name;
82                         size_t size;
83
84                         /*
85                          * If there is a '*' at the end of name, only check
86                          * upto there
87                          */
88                         size = strlen(name);
89                         if (size && name[size - 1] == '*') {
90                                 if (strncmp(name, s, size - 1))
91                                         continue;
92                         } else if (strcmp(name, s))
93                                 continue;
94
95                         /* we have a match */
96                         powerpc_firmware_features |=
97                                 hypertas_fw_features_table[i].val;
98                         break;
99                 }
100         }
101
102         pr_debug(" <- fw_hypertas_feature_init()\n");
103 }
104
105 struct vec5_fw_feature {
106         unsigned long   val;
107         unsigned int    feature;
108 };
109
110 static __initdata struct vec5_fw_feature
111 vec5_fw_features_table[] = {
112         {FW_FEATURE_TYPE1_AFFINITY,     OV5_TYPE1_AFFINITY},
113         {FW_FEATURE_PRRN,               OV5_PRRN},
114 };
115
116 void __init fw_vec5_feature_init(const char *vec5, unsigned long len)
117 {
118         unsigned int index, feat;
119         int i;
120
121         pr_debug(" -> fw_vec5_feature_init()\n");
122
123         for (i = 0; i < ARRAY_SIZE(vec5_fw_features_table); i++) {
124                 index = OV5_INDX(vec5_fw_features_table[i].feature);
125                 feat = OV5_FEAT(vec5_fw_features_table[i].feature);
126
127                 if (vec5[index] & feat)
128                         powerpc_firmware_features |=
129                                 vec5_fw_features_table[i].val;
130         }
131
132         pr_debug(" <- fw_vec5_feature_init()\n");
133 }