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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-28 02:01:16 -0400
committerH. Peter Anvin <hpa@zytor.com>2008-09-04 11:08:53 -0400
commit1625324d22409e32e3f8eb86018cad72e1c09d61 (patch)
tree1f124433fb423b8b60e36fc73e46a7008cc6cc5a /arch/x86/kernel/es7000_32.c
parent7203781c98ad9147564d327de6f6513ad8fc0f4e (diff)
x86: move dir es7000 to es7000_32.c
to be aligned with numaq, summit. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/es7000_32.c')
-rw-r--r--arch/x86/kernel/es7000_32.c345
1 files changed, 345 insertions, 0 deletions
diff --git a/arch/x86/kernel/es7000_32.c b/arch/x86/kernel/es7000_32.c
new file mode 100644
index 000000000000..849e5cd485b8
--- /dev/null
+++ b/arch/x86/kernel/es7000_32.c
@@ -0,0 +1,345 @@
1/*
2 * Written by: Garry Forsgren, Unisys Corporation
3 * Natalie Protasevich, Unisys Corporation
4 * This file contains the code to configure and interface
5 * with Unisys ES7000 series hardware system manager.
6 *
7 * Copyright (c) 2003 Unisys Corporation. All Rights Reserved.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it would be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write the Free Software Foundation, Inc., 59
19 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
20 *
21 * Contact information: Unisys Corporation, Township Line & Union Meeting
22 * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
23 *
24 * http://www.unisys.com
25 */
26
27#include <linux/module.h>
28#include <linux/types.h>
29#include <linux/kernel.h>
30#include <linux/smp.h>
31#include <linux/string.h>
32#include <linux/spinlock.h>
33#include <linux/errno.h>
34#include <linux/notifier.h>
35#include <linux/reboot.h>
36#include <linux/init.h>
37#include <linux/acpi.h>
38#include <asm/io.h>
39#include <asm/nmi.h>
40#include <asm/smp.h>
41#include <asm/apicdef.h>
42#include <mach_mpparse.h>
43
44/*
45 * ES7000 chipsets
46 */
47
48#define NON_UNISYS 0
49#define ES7000_CLASSIC 1
50#define ES7000_ZORRO 2
51
52
53#define MIP_REG 1
54#define MIP_PSAI_REG 4
55
56#define MIP_BUSY 1
57#define MIP_SPIN 0xf0000
58#define MIP_VALID 0x0100000000000000ULL
59#define MIP_PORT(VALUE) ((VALUE >> 32) & 0xffff)
60
61#define MIP_RD_LO(VALUE) (VALUE & 0xffffffff)
62
63struct mip_reg_info {
64 unsigned long long mip_info;
65 unsigned long long delivery_info;
66 unsigned long long host_reg;
67 unsigned long long mip_reg;
68};
69
70struct part_info {
71 unsigned char type;
72 unsigned char length;
73 unsigned char part_id;
74 unsigned char apic_mode;
75 unsigned long snum;
76 char ptype[16];
77 char sname[64];
78 char pname[64];
79};
80
81struct psai {
82 unsigned long long entry_type;
83 unsigned long long addr;
84 unsigned long long bep_addr;
85};
86
87struct es7000_mem_info {
88 unsigned char type;
89 unsigned char length;
90 unsigned char resv[6];
91 unsigned long long start;
92 unsigned long long size;
93};
94
95struct es7000_oem_table {
96 unsigned long long hdr;
97 struct mip_reg_info mip;
98 struct part_info pif;
99 struct es7000_mem_info shm;
100 struct psai psai;
101};
102
103#ifdef CONFIG_ACPI
104
105struct oem_table {
106 struct acpi_table_header Header;
107 u32 OEMTableAddr;
108 u32 OEMTableSize;
109};
110
111extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
112#endif
113
114struct mip_reg {
115 unsigned long long off_0;
116 unsigned long long off_8;
117 unsigned long long off_10;
118 unsigned long long off_18;
119 unsigned long long off_20;
120 unsigned long long off_28;
121 unsigned long long off_30;
122 unsigned long long off_38;
123};
124
125#define MIP_SW_APIC 0x1020b
126#define MIP_FUNC(VALUE) (VALUE & 0xff)
127
128/*
129 * ES7000 Globals
130 */
131
132static volatile unsigned long *psai = NULL;
133static struct mip_reg *mip_reg;
134static struct mip_reg *host_reg;
135static int mip_port;
136static unsigned long mip_addr, host_addr;
137
138int es7000_plat;
139
140/*
141 * GSI override for ES7000 platforms.
142 */
143
144static unsigned int base;
145
146static int
147es7000_rename_gsi(int ioapic, int gsi)
148{
149 if (es7000_plat == ES7000_ZORRO)
150 return gsi;
151
152 if (!base) {
153 int i;
154 for (i = 0; i < nr_ioapics; i++)
155 base += nr_ioapic_registers[i];
156 }
157
158 if (!ioapic && (gsi < 16))
159 gsi += base;
160 return gsi;
161}
162
163void __init
164setup_unisys(void)
165{
166 /*
167 * Determine the generation of the ES7000 currently running.
168 *
169 * es7000_plat = 1 if the machine is a 5xx ES7000 box
170 * es7000_plat = 2 if the machine is a x86_64 ES7000 box
171 *
172 */
173 if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
174 es7000_plat = ES7000_ZORRO;
175 else
176 es7000_plat = ES7000_CLASSIC;
177 ioapic_renumber_irq = es7000_rename_gsi;
178}
179
180/*
181 * Parse the OEM Table
182 */
183
184int __init
185parse_unisys_oem (char *oemptr)
186{
187 int i;
188 int success = 0;
189 unsigned char type, size;
190 unsigned long val;
191 char *tp = NULL;
192 struct psai *psaip = NULL;
193 struct mip_reg_info *mi;
194 struct mip_reg *host, *mip;
195
196 tp = oemptr;
197
198 tp += 8;
199
200 for (i=0; i <= 6; i++) {
201 type = *tp++;
202 size = *tp++;
203 tp -= 2;
204 switch (type) {
205 case MIP_REG:
206 mi = (struct mip_reg_info *)tp;
207 val = MIP_RD_LO(mi->host_reg);
208 host_addr = val;
209 host = (struct mip_reg *)val;
210 host_reg = __va(host);
211 val = MIP_RD_LO(mi->mip_reg);
212 mip_port = MIP_PORT(mi->mip_info);
213 mip_addr = val;
214 mip = (struct mip_reg *)val;
215 mip_reg = __va(mip);
216 pr_debug("es7000_mipcfg: host_reg = 0x%lx \n",
217 (unsigned long)host_reg);
218 pr_debug("es7000_mipcfg: mip_reg = 0x%lx \n",
219 (unsigned long)mip_reg);
220 success++;
221 break;
222 case MIP_PSAI_REG:
223 psaip = (struct psai *)tp;
224 if (tp != NULL) {
225 if (psaip->addr)
226 psai = __va(psaip->addr);
227 else
228 psai = NULL;
229 success++;
230 }
231 break;
232 default:
233 break;
234 }
235 tp += size;
236 }
237
238 if (success < 2) {
239 es7000_plat = NON_UNISYS;
240 } else
241 setup_unisys();
242 return es7000_plat;
243}
244
245#ifdef CONFIG_ACPI
246int __init
247find_unisys_acpi_oem_table(unsigned long *oem_addr)
248{
249 struct acpi_table_header *header = NULL;
250 int i = 0;
251 while (ACPI_SUCCESS(acpi_get_table("OEM1", i++, &header))) {
252 if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) {
253 struct oem_table *t = (struct oem_table *)header;
254 *oem_addr = (unsigned long)__acpi_map_table(t->OEMTableAddr,
255 t->OEMTableSize);
256 return 0;
257 }
258 }
259 return -1;
260}
261#endif
262
263static void
264es7000_spin(int n)
265{
266 int i = 0;
267
268 while (i++ < n)
269 rep_nop();
270}
271
272static int __init
273es7000_mip_write(struct mip_reg *mip_reg)
274{
275 int status = 0;
276 int spin;
277
278 spin = MIP_SPIN;
279 while (((unsigned long long)host_reg->off_38 &
280 (unsigned long long)MIP_VALID) != 0) {
281 if (--spin <= 0) {
282 printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
283 return -1;
284 }
285 es7000_spin(MIP_SPIN);
286 }
287
288 memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
289 outb(1, mip_port);
290
291 spin = MIP_SPIN;
292
293 while (((unsigned long long)mip_reg->off_38 &
294 (unsigned long long)MIP_VALID) == 0) {
295 if (--spin <= 0) {
296 printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
297 return -1;
298 }
299 es7000_spin(MIP_SPIN);
300 }
301
302 status = ((unsigned long long)mip_reg->off_0 &
303 (unsigned long long)0xffff0000000000ULL) >> 48;
304 mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
305 (unsigned long long)~MIP_VALID);
306 return status;
307}
308
309int
310es7000_start_cpu(int cpu, unsigned long eip)
311{
312 unsigned long vect = 0, psaival = 0;
313
314 if (psai == NULL)
315 return -1;
316
317 vect = ((unsigned long)__pa(eip)/0x1000) << 16;
318 psaival = (0x1000000 | vect | cpu);
319
320 while (*psai & 0x1000000)
321 ;
322
323 *psai = psaival;
324
325 return 0;
326
327}
328
329void __init
330es7000_sw_apic(void)
331{
332 if (es7000_plat) {
333 int mip_status;
334 struct mip_reg es7000_mip_reg;
335
336 printk("ES7000: Enabling APIC mode.\n");
337 memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
338 es7000_mip_reg.off_0 = MIP_SW_APIC;
339 es7000_mip_reg.off_38 = (MIP_VALID);
340 while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
341 printk("es7000_sw_apic: command failed, status = %x\n",
342 mip_status);
343 return;
344 }
345}