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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
// SPDX-License-Identifier: GPL-2.0+
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include "ipmi_si.h"
#define PFX "ipmi_hardcode: "
/*
* There can be 4 IO ports passed in (with or without IRQs), 4 addresses,
* a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS.
*/
#define SI_MAX_PARMS 4
#define MAX_SI_TYPE_STR 30
static char si_type_str[MAX_SI_TYPE_STR] __initdata;
static unsigned long addrs[SI_MAX_PARMS];
static unsigned int num_addrs;
static unsigned int ports[SI_MAX_PARMS];
static unsigned int num_ports;
static int irqs[SI_MAX_PARMS] __initdata;
static unsigned int num_irqs __initdata;
static int regspacings[SI_MAX_PARMS] __initdata;
static unsigned int num_regspacings __initdata;
static int regsizes[SI_MAX_PARMS] __initdata;
static unsigned int num_regsizes __initdata;
static int regshifts[SI_MAX_PARMS] __initdata;
static unsigned int num_regshifts __initdata;
static int slave_addrs[SI_MAX_PARMS] __initdata;
static unsigned int num_slave_addrs __initdata;
module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0);
MODULE_PARM_DESC(type, "Defines the type of each interface, each"
" interface separated by commas. The types are 'kcs',"
" 'smic', and 'bt'. For example si_type=kcs,bt will set"
" the first interface to kcs and the second to bt");
module_param_hw_array(addrs, ulong, iomem, &num_addrs, 0);
MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the"
" addresses separated by commas. Only use if an interface"
" is in memory. Otherwise, set it to zero or leave"
" it blank.");
module_param_hw_array(ports, uint, ioport, &num_ports, 0);
MODULE_PARM_DESC(ports, "Sets the port address of each interface, the"
" addresses separated by commas. Only use if an interface"
" is a port. Otherwise, set it to zero or leave"
" it blank.");
module_param_hw_array(irqs, int, irq, &num_irqs, 0);
MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the"
" addresses separated by commas. Only use if an interface"
" has an interrupt. Otherwise, set it to zero or leave"
" it blank.");
module_param_hw_array(regspacings, int, other, &num_regspacings, 0);
MODULE_PARM_DESC(regspacings, "The number of bytes between the start address"
" and each successive register used by the interface. For"
" instance, if the start address is 0xca2 and the spacing"
" is 2, then the second address is at 0xca4. Defaults"
" to 1.");
module_param_hw_array(regsizes, int, other, &num_regsizes, 0);
MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes."
" This should generally be 1, 2, 4, or 8 for an 8-bit,"
" 16-bit, 32-bit, or 64-bit register. Use this if you"
" the 8-bit IPMI register has to be read from a larger"
" register.");
module_param_hw_array(regshifts, int, other, &num_regshifts, 0);
MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the."
" IPMI register, in bits. For instance, if the data"
" is read from a 32-bit word and the IPMI data is in"
" bit 8-15, then the shift would be 8");
module_param_hw_array(slave_addrs, int, other, &num_slave_addrs, 0);
MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for"
" the controller. Normally this is 0x20, but can be"
" overridden by this parm. This is an array indexed"
" by interface number.");
static struct platform_device *ipmi_hc_pdevs[SI_MAX_PARMS];
static void __init ipmi_hardcode_init_one(const char *si_type_str,
unsigned int i,
unsigned long addr,
unsigned int flags)
{
struct platform_device *pdev;
unsigned int num_r = 1, size;
struct resource r[4];
struct property_entry p[6];
enum si_type si_type;
unsigned int regspacing, regsize;
int rv;
memset(p, 0, sizeof(p));
memset(r, 0, sizeof(r));
if (!si_type_str || !*si_type_str || strcmp(si_type_str, "kcs") == 0) {
size = 2;
si_type = SI_KCS;
} else if (strcmp(si_type_str, "smic") == 0) {
size = 2;
si_type = SI_SMIC;
} else if (strcmp(si_type_str, "bt") == 0) {
size = 3;
si_type = SI_BT;
} else if (strcmp(si_type_str, "invalid") == 0) {
/*
* Allow a firmware-specified interface to be
* disabled.
*/
size = 1;
si_type = SI_TYPE_INVALID;
} else {
pr_warn("Interface type specified for interface %d, was invalid: %s\n",
i, si_type_str);
return;
}
regsize = regsizes[i];
if (regsize == 0)
regsize = DEFAULT_REGSIZE;
p[0] = PROPERTY_ENTRY_U8("ipmi-type", si_type);
p[1] = PROPERTY_ENTRY_U8("slave-addr", slave_addrs[i]);
p[2] = PROPERTY_ENTRY_U8("addr-source", SI_HARDCODED);
p[3] = PROPERTY_ENTRY_U8("reg-shift", regshifts[i]);
p[4] = PROPERTY_ENTRY_U8("reg-size", regsize);
/* Last entry must be left NULL to terminate it. */
/*
* Register spacing is derived from the resources in
* the IPMI platform code.
*/
regspacing = regspacings[i];
if (regspacing == 0)
regspacing = regsize;
r[0].start = addr;
r[0].end = r[0].start + regsize - 1;
r[0].name = "IPMI Address 1";
r[0].flags = flags;
if (size > 1) {
r[1].start = r[0].start + regspacing;
r[1].end = r[1].start + regsize - 1;
r[1].name = "IPMI Address 2";
r[1].flags = flags;
num_r++;
}
if (size > 2) {
r[2].start = r[1].start + regspacing;
r[2].end = r[2].start + regsize - 1;
r[2].name = "IPMI Address 3";
r[2].flags = flags;
num_r++;
}
if (irqs[i]) {
r[num_r].start = irqs[i];
r[num_r].end = irqs[i];
r[num_r].name = "IPMI IRQ";
r[num_r].flags = IORESOURCE_IRQ;
num_r++;
}
pdev = platform_device_alloc("hardcode-ipmi-si", i);
if (!pdev) {
pr_err("Error allocating IPMI platform device %d\n", i);
return;
}
rv = platform_device_add_resources(pdev, r, num_r);
if (rv) {
dev_err(&pdev->dev,
"Unable to add hard-code resources: %d\n", rv);
goto err;
}
rv = platform_device_add_properties(pdev, p);
if (rv) {
dev_err(&pdev->dev,
"Unable to add hard-code properties: %d\n", rv);
goto err;
}
rv = platform_device_add(pdev);
if (rv) {
dev_err(&pdev->dev,
"Unable to add hard-code device: %d\n", rv);
goto err;
}
ipmi_hc_pdevs[i] = pdev;
return;
err:
platform_device_put(pdev);
}
void __init ipmi_hardcode_init(void)
{
unsigned int i;
char *str;
char *si_type[SI_MAX_PARMS];
memset(si_type, 0, sizeof(si_type));
/* Parse out the si_type string into its components. */
str = si_type_str;
if (*str != '\0') {
for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) {
si_type[i] = str;
str = strchr(str, ',');
if (str) {
*str = '\0';
str++;
} else {
break;
}
}
}
for (i = 0; i < SI_MAX_PARMS; i++) {
if (i < num_ports && ports[i])
ipmi_hardcode_init_one(si_type[i], i, ports[i],
IORESOURCE_IO);
if (i < num_addrs && addrs[i])
ipmi_hardcode_init_one(si_type[i], i, addrs[i],
IORESOURCE_MEM);
}
}
void ipmi_si_hardcode_exit(void)
{
unsigned int i;
for (i = 0; i < SI_MAX_PARMS; i++) {
if (ipmi_hc_pdevs[i])
platform_device_unregister(ipmi_hc_pdevs[i]);
}
}
/*
* Returns true of the given address exists as a hardcoded address,
* false if not.
*/
int ipmi_si_hardcode_match(int addr_type, unsigned long addr)
{
unsigned int i;
if (addr_type == IPMI_IO_ADDR_SPACE) {
for (i = 0; i < num_ports; i++) {
if (ports[i] == addr)
return 1;
}
} else {
for (i = 0; i < num_addrs; i++) {
if (addrs[i] == addr)
return 1;
}
}
return 0;
}
|
