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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
|
/*
* Written by: Garry Forsgren, Unisys Corporation
* Natalie Protasevich, Unisys Corporation
* This file contains the code to configure and interface
* with Unisys ES7000 series hardware system manager.
*
* Copyright (c) 2003 Unisys Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Unisys Corporation, Township Line & Union Meeting
* Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
*
* http://www.unisys.com
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <asm/nmi.h>
#include <asm/smp.h>
#include <asm/apicdef.h>
#include "es7000.h"
/*
* ES7000 Globals
*/
volatile unsigned long *psai = NULL;
struct mip_reg *mip_reg;
struct mip_reg *host_reg;
int mip_port;
unsigned long mip_addr, host_addr;
#if defined(CONFIG_X86_IO_APIC) && (defined(CONFIG_ACPI_INTERPRETER) || defined(CONFIG_ACPI_BOOT))
/*
* GSI override for ES7000 platforms.
*/
static unsigned int base;
static int
es7000_rename_gsi(int ioapic, int gsi)
{
if (!base) {
int i;
for (i = 0; i < nr_ioapics; i++)
base += nr_ioapic_registers[i];
}
if (!ioapic && (gsi < 16))
gsi += base;
return gsi;
}
#endif // (CONFIG_X86_IO_APIC) && (CONFIG_ACPI_INTERPRETER || CONFIG_ACPI_BOOT)
/*
* Parse the OEM Table
*/
int __init
parse_unisys_oem (char *oemptr, int oem_entries)
{
int i;
int success = 0;
unsigned char type, size;
unsigned long val;
char *tp = NULL;
struct psai *psaip = NULL;
struct mip_reg_info *mi;
struct mip_reg *host, *mip;
tp = oemptr;
tp += 8;
for (i=0; i <= oem_entries; i++) {
type = *tp++;
size = *tp++;
tp -= 2;
switch (type) {
case MIP_REG:
mi = (struct mip_reg_info *)tp;
val = MIP_RD_LO(mi->host_reg);
host_addr = val;
host = (struct mip_reg *)val;
host_reg = __va(host);
val = MIP_RD_LO(mi->mip_reg);
mip_port = MIP_PORT(mi->mip_info);
mip_addr = val;
mip = (struct mip_reg *)val;
mip_reg = __va(mip);
Dprintk("es7000_mipcfg: host_reg = 0x%lx \n",
(unsigned long)host_reg);
Dprintk("es7000_mipcfg: mip_reg = 0x%lx \n",
(unsigned long)mip_reg);
success++;
break;
case MIP_PSAI_REG:
psaip = (struct psai *)tp;
if (tp != NULL) {
if (psaip->addr)
psai = __va(psaip->addr);
else
psai = NULL;
success++;
}
break;
default:
break;
}
if (i == 6) break;
tp += size;
}
if (success < 2) {
es7000_plat = 0;
} else {
printk("\nEnabling ES7000 specific features...\n");
/*
* Determine the generation of the ES7000 currently running.
*
* es7000_plat = 0 if the machine is NOT a Unisys ES7000 box
* es7000_plat = 1 if the machine is a 5xx ES7000 box
* es7000_plat = 2 if the machine is a x86_64 ES7000 box
*
*/
if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
es7000_plat = 2;
else
es7000_plat = 1;
ioapic_renumber_irq = es7000_rename_gsi;
}
return es7000_plat;
}
int __init
find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length)
{
struct acpi_table_rsdp *rsdp = NULL;
unsigned long rsdp_phys = 0;
struct acpi_table_header *header = NULL;
int i;
struct acpi_table_sdt sdt;
rsdp_phys = acpi_find_rsdp();
rsdp = __va(rsdp_phys);
if (rsdp->rsdt_address) {
struct acpi_table_rsdt *mapped_rsdt = NULL;
sdt.pa = rsdp->rsdt_address;
header = (struct acpi_table_header *)
__acpi_map_table(sdt.pa, sizeof(struct acpi_table_header));
if (!header)
return -ENODEV;
sdt.count = (header->length - sizeof(struct acpi_table_header)) >> 3;
mapped_rsdt = (struct acpi_table_rsdt *)
__acpi_map_table(sdt.pa, header->length);
if (!mapped_rsdt)
return -ENODEV;
header = &mapped_rsdt->header;
for (i = 0; i < sdt.count; i++)
sdt.entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
};
for (i = 0; i < sdt.count; i++) {
header = (struct acpi_table_header *)
__acpi_map_table(sdt.entry[i].pa,
sizeof(struct acpi_table_header));
if (!header)
continue;
if (!strncmp((char *) &header->signature, "OEM1", 4)) {
if (!strncmp((char *) &header->oem_id, "UNISYS", 6)) {
void *addr;
struct oem_table *t;
acpi_table_print(header, sdt.entry[i].pa);
t = (struct oem_table *) __acpi_map_table(sdt.entry[i].pa, header->length);
addr = (void *) __acpi_map_table(t->OEMTableAddr, t->OEMTableSize);
*length = header->length;
*oem_addr = (unsigned long) addr;
return 0;
}
}
}
Dprintk("ES7000: did not find Unisys ACPI OEM table!\n");
return -1;
}
static void
es7000_spin(int n)
{
int i = 0;
while (i++ < n)
rep_nop();
}
static int __init
es7000_mip_write(struct mip_reg *mip_reg)
{
int status = 0;
int spin;
spin = MIP_SPIN;
while (((unsigned long long)host_reg->off_38 &
(unsigned long long)MIP_VALID) != 0) {
if (--spin <= 0) {
printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
return -1;
}
es7000_spin(MIP_SPIN);
}
memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
outb(1, mip_port);
spin = MIP_SPIN;
while (((unsigned long long)mip_reg->off_38 &
(unsigned long long)MIP_VALID) == 0) {
if (--spin <= 0) {
printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
return -1;
}
es7000_spin(MIP_SPIN);
}
status = ((unsigned long long)mip_reg->off_0 &
(unsigned long long)0xffff0000000000ULL) >> 48;
mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
(unsigned long long)~MIP_VALID);
return status;
}
int
es7000_start_cpu(int cpu, unsigned long eip)
{
unsigned long vect = 0, psaival = 0;
if (psai == NULL)
return -1;
vect = ((unsigned long)__pa(eip)/0x1000) << 16;
psaival = (0x1000000 | vect | cpu);
while (*psai & 0x1000000)
;
*psai = psaival;
return 0;
}
int
es7000_stop_cpu(int cpu)
{
int startup;
if (psai == NULL)
return -1;
startup= (0x1000000 | cpu);
while ((*psai & 0xff00ffff) != startup)
;
startup = (*psai & 0xff0000) >> 16;
*psai &= 0xffffff;
return 0;
}
void __init
es7000_sw_apic()
{
if (es7000_plat) {
int mip_status;
struct mip_reg es7000_mip_reg;
printk("ES7000: Enabling APIC mode.\n");
memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
es7000_mip_reg.off_0 = MIP_SW_APIC;
es7000_mip_reg.off_38 = (MIP_VALID);
while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
printk("es7000_sw_apic: command failed, status = %x\n",
mip_status);
return;
}
}
|
