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-rw-r--r--arch/i386/kernel/dmi_scan.c391
1 files changed, 73 insertions, 318 deletions
diff --git a/arch/i386/kernel/dmi_scan.c b/arch/i386/kernel/dmi_scan.c
index 6ed7e28f306c..a3cdf894302b 100644
--- a/arch/i386/kernel/dmi_scan.c
+++ b/arch/i386/kernel/dmi_scan.c
@@ -1,22 +1,15 @@
1#include <linux/types.h> 1#include <linux/types.h>
2#include <linux/kernel.h>
3#include <linux/string.h> 2#include <linux/string.h>
4#include <linux/init.h> 3#include <linux/init.h>
5#include <linux/module.h> 4#include <linux/module.h>
6#include <linux/slab.h>
7#include <linux/acpi.h>
8#include <asm/io.h>
9#include <linux/pm.h>
10#include <asm/system.h>
11#include <linux/dmi.h> 5#include <linux/dmi.h>
12#include <linux/bootmem.h> 6#include <linux/bootmem.h>
13 7
14 8
15struct dmi_header 9struct dmi_header {
16{ 10 u8 type;
17 u8 type; 11 u8 length;
18 u8 length; 12 u16 handle;
19 u16 handle;
20}; 13};
21 14
22#undef DMI_DEBUG 15#undef DMI_DEBUG
@@ -29,15 +22,13 @@ struct dmi_header
29 22
30static char * __init dmi_string(struct dmi_header *dm, u8 s) 23static char * __init dmi_string(struct dmi_header *dm, u8 s)
31{ 24{
32 u8 *bp=(u8 *)dm; 25 u8 *bp = ((u8 *) dm) + dm->length;
33 bp+=dm->length; 26
34 if(!s) 27 if (!s)
35 return ""; 28 return "";
36 s--; 29 s--;
37 while(s>0 && *bp) 30 while (s > 0 && *bp) {
38 { 31 bp += strlen(bp) + 1;
39 bp+=strlen(bp);
40 bp++;
41 s--; 32 s--;
42 } 33 }
43 return bp; 34 return bp;
@@ -47,16 +38,14 @@ static char * __init dmi_string(struct dmi_header *dm, u8 s)
47 * We have to be cautious here. We have seen BIOSes with DMI pointers 38 * We have to be cautious here. We have seen BIOSes with DMI pointers
48 * pointing to completely the wrong place for example 39 * pointing to completely the wrong place for example
49 */ 40 */
50 41static int __init dmi_table(u32 base, int len, int num,
51static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dmi_header *)) 42 void (*decode)(struct dmi_header *))
52{ 43{
53 u8 *buf; 44 u8 *buf, *data;
54 struct dmi_header *dm; 45 int i = 0;
55 u8 *data;
56 int i=0;
57 46
58 buf = bt_ioremap(base, len); 47 buf = bt_ioremap(base, len);
59 if(buf==NULL) 48 if (buf == NULL)
60 return -1; 49 return -1;
61 50
62 data = buf; 51 data = buf;
@@ -65,36 +54,34 @@ static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dm
65 * Stop when we see all the items the table claimed to have 54 * Stop when we see all the items the table claimed to have
66 * OR we run off the end of the table (also happens) 55 * OR we run off the end of the table (also happens)
67 */ 56 */
68 57 while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) {
69 while(i<num && data-buf+sizeof(struct dmi_header)<=len) 58 struct dmi_header *dm = (struct dmi_header *)data;
70 {
71 dm=(struct dmi_header *)data;
72 /* 59 /*
73 * We want to know the total length (formated area and strings) 60 * We want to know the total length (formated area and strings)
74 * before decoding to make sure we won't run off the table in 61 * before decoding to make sure we won't run off the table in
75 * dmi_decode or dmi_string 62 * dmi_decode or dmi_string
76 */ 63 */
77 data+=dm->length; 64 data += dm->length;
78 while(data-buf<len-1 && (data[0] || data[1])) 65 while ((data - buf < len - 1) && (data[0] || data[1]))
79 data++; 66 data++;
80 if(data-buf<len-1) 67 if (data - buf < len - 1)
81 decode(dm); 68 decode(dm);
82 data+=2; 69 data += 2;
83 i++; 70 i++;
84 } 71 }
85 bt_iounmap(buf, len); 72 bt_iounmap(buf, len);
86 return 0; 73 return 0;
87} 74}
88 75
89 76static int __init dmi_checksum(u8 *buf)
90inline static int __init dmi_checksum(u8 *buf)
91{ 77{
92 u8 sum=0; 78 u8 sum = 0;
93 int a; 79 int a;
94 80
95 for(a=0; a<15; a++) 81 for (a = 0; a < 15; a++)
96 sum+=buf[a]; 82 sum += buf[a];
97 return (sum==0); 83
84 return sum == 0;
98} 85}
99 86
100static int __init dmi_iterate(void (*decode)(struct dmi_header *)) 87static int __init dmi_iterate(void (*decode)(struct dmi_header *))
@@ -110,28 +97,30 @@ static int __init dmi_iterate(void (*decode)(struct dmi_header *))
110 p = ioremap(0xF0000, 0x10000); 97 p = ioremap(0xF0000, 0x10000);
111 if (p == NULL) 98 if (p == NULL)
112 return -1; 99 return -1;
100
113 for (q = p; q < p + 0x10000; q += 16) { 101 for (q = p; q < p + 0x10000; q += 16) {
114 memcpy_fromio(buf, q, 15); 102 memcpy_fromio(buf, q, 15);
115 if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf)) 103 if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) {
116 { 104 u16 num = (buf[13] << 8) | buf[12];
117 u16 num=buf[13]<<8|buf[12]; 105 u16 len = (buf[7] << 8) | buf[6];
118 u16 len=buf[7]<<8|buf[6]; 106 u32 base = (buf[11] << 24) | (buf[10] << 16) |
119 u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8]; 107 (buf[9] << 8) | buf[8];
120 108
121 /* 109 /*
122 * DMI version 0.0 means that the real version is taken from 110 * DMI version 0.0 means that the real version is taken from
123 * the SMBIOS version, which we don't know at this point. 111 * the SMBIOS version, which we don't know at this point.
124 */ 112 */
125 if(buf[14]!=0) 113 if (buf[14] != 0)
126 printk(KERN_INFO "DMI %d.%d present.\n", 114 printk(KERN_INFO "DMI %d.%d present.\n",
127 buf[14]>>4, buf[14]&0x0F); 115 buf[14] >> 4, buf[14] & 0xF);
128 else 116 else
129 printk(KERN_INFO "DMI present.\n"); 117 printk(KERN_INFO "DMI present.\n");
118
130 dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n", 119 dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n",
131 num, len)); 120 num, len));
132 dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", 121 dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", base));
133 base)); 122
134 if(dmi_table(base,len, num, decode)==0) 123 if (dmi_table(base,len, num, decode) == 0)
135 return 0; 124 return 0;
136 } 125 }
137 } 126 }
@@ -143,16 +132,17 @@ static char *dmi_ident[DMI_STRING_MAX];
143/* 132/*
144 * Save a DMI string 133 * Save a DMI string
145 */ 134 */
146
147static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string) 135static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string)
148{ 136{
149 char *d = (char*)dm; 137 char *d = (char*)dm;
150 char *p = dmi_string(dm, d[string]); 138 char *p = dmi_string(dm, d[string]);
151 if(p==NULL || *p == 0) 139
140 if (p == NULL || *p == 0)
152 return; 141 return;
153 if (dmi_ident[slot]) 142 if (dmi_ident[slot])
154 return; 143 return;
155 dmi_ident[slot] = alloc_bootmem(strlen(p)+1); 144
145 dmi_ident[slot] = alloc_bootmem(strlen(p) + 1);
156 if(dmi_ident[slot]) 146 if(dmi_ident[slot])
157 strcpy(dmi_ident[slot], p); 147 strcpy(dmi_ident[slot], p);
158 else 148 else
@@ -160,281 +150,47 @@ static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string)
160} 150}
161 151
162/* 152/*
163 * Ugly compatibility crap.
164 */
165#define dmi_blacklist dmi_system_id
166#define NO_MATCH { DMI_NONE, NULL}
167#define MATCH DMI_MATCH
168
169/*
170 * Toshiba keyboard likes to repeat keys when they are not repeated.
171 */
172
173static __init int broken_toshiba_keyboard(struct dmi_blacklist *d)
174{
175 printk(KERN_WARNING "Toshiba with broken keyboard detected. If your keyboard sometimes generates 3 keypresses instead of one, see http://davyd.ucc.asn.au/projects/toshiba/README\n");
176 return 0;
177}
178
179
180#ifdef CONFIG_ACPI_SLEEP
181static __init int reset_videomode_after_s3(struct dmi_blacklist *d)
182{
183 /* See acpi_wakeup.S */
184 extern long acpi_video_flags;
185 acpi_video_flags |= 2;
186 return 0;
187}
188#endif
189
190
191#ifdef CONFIG_ACPI_BOOT
192extern int acpi_force;
193
194static __init __attribute__((unused)) int dmi_disable_acpi(struct dmi_blacklist *d)
195{
196 if (!acpi_force) {
197 printk(KERN_NOTICE "%s detected: acpi off\n",d->ident);
198 disable_acpi();
199 } else {
200 printk(KERN_NOTICE
201 "Warning: DMI blacklist says broken, but acpi forced\n");
202 }
203 return 0;
204}
205
206/*
207 * Limit ACPI to CPU enumeration for HT
208 */
209static __init __attribute__((unused)) int force_acpi_ht(struct dmi_blacklist *d)
210{
211 if (!acpi_force) {
212 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", d->ident);
213 disable_acpi();
214 acpi_ht = 1;
215 } else {
216 printk(KERN_NOTICE
217 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
218 }
219 return 0;
220}
221#endif
222
223#ifdef CONFIG_ACPI_PCI
224static __init int disable_acpi_irq(struct dmi_blacklist *d)
225{
226 if (!acpi_force) {
227 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
228 d->ident);
229 acpi_noirq_set();
230 }
231 return 0;
232}
233static __init int disable_acpi_pci(struct dmi_blacklist *d)
234{
235 if (!acpi_force) {
236 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
237 d->ident);
238 acpi_disable_pci();
239 }
240 return 0;
241}
242#endif
243
244/*
245 * Process the DMI blacklists
246 */
247
248
249/*
250 * This will be expanded over time to force things like the APM
251 * interrupt mask settings according to the laptop
252 */
253
254static __initdata struct dmi_blacklist dmi_blacklist[]={
255
256 { broken_toshiba_keyboard, "Toshiba Satellite 4030cdt", { /* Keyboard generates spurious repeats */
257 MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),
258 NO_MATCH, NO_MATCH, NO_MATCH
259 } },
260#ifdef CONFIG_ACPI_SLEEP
261 { reset_videomode_after_s3, "Toshiba Satellite 4030cdt", { /* Reset video mode after returning from ACPI S3 sleep */
262 MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),
263 NO_MATCH, NO_MATCH, NO_MATCH
264 } },
265#endif
266
267#ifdef CONFIG_ACPI_BOOT
268 /*
269 * If your system is blacklisted here, but you find that acpi=force
270 * works for you, please contact acpi-devel@sourceforge.net
271 */
272
273 /*
274 * Boxes that need ACPI disabled
275 */
276
277 { dmi_disable_acpi, "IBM Thinkpad", {
278 MATCH(DMI_BOARD_VENDOR, "IBM"),
279 MATCH(DMI_BOARD_NAME, "2629H1G"),
280 NO_MATCH, NO_MATCH }},
281
282 /*
283 * Boxes that need acpi=ht
284 */
285
286 { force_acpi_ht, "FSC Primergy T850", {
287 MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
288 MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
289 NO_MATCH, NO_MATCH }},
290
291 { force_acpi_ht, "DELL GX240", {
292 MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
293 MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
294 NO_MATCH, NO_MATCH }},
295
296 { force_acpi_ht, "HP VISUALIZE NT Workstation", {
297 MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
298 MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
299 NO_MATCH, NO_MATCH }},
300
301 { force_acpi_ht, "Compaq Workstation W8000", {
302 MATCH(DMI_SYS_VENDOR, "Compaq"),
303 MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
304 NO_MATCH, NO_MATCH }},
305
306 { force_acpi_ht, "ASUS P4B266", {
307 MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
308 MATCH(DMI_BOARD_NAME, "P4B266"),
309 NO_MATCH, NO_MATCH }},
310
311 { force_acpi_ht, "ASUS P2B-DS", {
312 MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
313 MATCH(DMI_BOARD_NAME, "P2B-DS"),
314 NO_MATCH, NO_MATCH }},
315
316 { force_acpi_ht, "ASUS CUR-DLS", {
317 MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
318 MATCH(DMI_BOARD_NAME, "CUR-DLS"),
319 NO_MATCH, NO_MATCH }},
320
321 { force_acpi_ht, "ABIT i440BX-W83977", {
322 MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
323 MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
324 NO_MATCH, NO_MATCH }},
325
326 { force_acpi_ht, "IBM Bladecenter", {
327 MATCH(DMI_BOARD_VENDOR, "IBM"),
328 MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
329 NO_MATCH, NO_MATCH }},
330
331 { force_acpi_ht, "IBM eServer xSeries 360", {
332 MATCH(DMI_BOARD_VENDOR, "IBM"),
333 MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
334 NO_MATCH, NO_MATCH }},
335
336 { force_acpi_ht, "IBM eserver xSeries 330", {
337 MATCH(DMI_BOARD_VENDOR, "IBM"),
338 MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
339 NO_MATCH, NO_MATCH }},
340
341 { force_acpi_ht, "IBM eserver xSeries 440", {
342 MATCH(DMI_BOARD_VENDOR, "IBM"),
343 MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
344 NO_MATCH, NO_MATCH }},
345
346#endif // CONFIG_ACPI_BOOT
347
348#ifdef CONFIG_ACPI_PCI
349 /*
350 * Boxes that need ACPI PCI IRQ routing disabled
351 */
352
353 { disable_acpi_irq, "ASUS A7V", {
354 MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
355 MATCH(DMI_BOARD_NAME, "<A7V>"),
356 /* newer BIOS, Revision 1011, does work */
357 MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"),
358 NO_MATCH }},
359
360 /*
361 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
362 */
363 { disable_acpi_pci, "ASUS PR-DLS", { /* _BBN 0 bug */
364 MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
365 MATCH(DMI_BOARD_NAME, "PR-DLS"),
366 MATCH(DMI_BIOS_VERSION, "ASUS PR-DLS ACPI BIOS Revision 1010"),
367 MATCH(DMI_BIOS_DATE, "03/21/2003") }},
368
369 { disable_acpi_pci, "Acer TravelMate 36x Laptop", {
370 MATCH(DMI_SYS_VENDOR, "Acer"),
371 MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
372 NO_MATCH, NO_MATCH
373 } },
374
375#endif
376
377 { NULL, }
378};
379
380/*
381 * Process a DMI table entry. Right now all we care about are the BIOS 153 * Process a DMI table entry. Right now all we care about are the BIOS
382 * and machine entries. For 2.5 we should pull the smbus controller info 154 * and machine entries. For 2.5 we should pull the smbus controller info
383 * out of here. 155 * out of here.
384 */ 156 */
385
386static void __init dmi_decode(struct dmi_header *dm) 157static void __init dmi_decode(struct dmi_header *dm)
387{ 158{
388#ifdef DMI_DEBUG 159 u8 *data __attribute__((__unused__)) = (u8 *)dm;
389 u8 *data = (u8 *)dm;
390#endif
391 160
392 switch(dm->type) 161 switch(dm->type) {
393 { 162 case 0:
394 case 0: 163 dmi_printk(("BIOS Vendor: %s\n", dmi_string(dm, data[4])));
395 dmi_printk(("BIOS Vendor: %s\n", 164 dmi_save_ident(dm, DMI_BIOS_VENDOR, 4);
396 dmi_string(dm, data[4]))); 165 dmi_printk(("BIOS Version: %s\n", dmi_string(dm, data[5])));
397 dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); 166 dmi_save_ident(dm, DMI_BIOS_VERSION, 5);
398 dmi_printk(("BIOS Version: %s\n", 167 dmi_printk(("BIOS Release: %s\n", dmi_string(dm, data[8])));
399 dmi_string(dm, data[5]))); 168 dmi_save_ident(dm, DMI_BIOS_DATE, 8);
400 dmi_save_ident(dm, DMI_BIOS_VERSION, 5); 169 break;
401 dmi_printk(("BIOS Release: %s\n", 170 case 1:
402 dmi_string(dm, data[8]))); 171 dmi_printk(("System Vendor: %s\n", dmi_string(dm, data[4])));
403 dmi_save_ident(dm, DMI_BIOS_DATE, 8); 172 dmi_save_ident(dm, DMI_SYS_VENDOR, 4);
404 break; 173 dmi_printk(("Product Name: %s\n", dmi_string(dm, data[5])));
405 case 1: 174 dmi_save_ident(dm, DMI_PRODUCT_NAME, 5);
406 dmi_printk(("System Vendor: %s\n", 175 dmi_printk(("Version: %s\n", dmi_string(dm, data[6])));
407 dmi_string(dm, data[4]))); 176 dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6);
408 dmi_save_ident(dm, DMI_SYS_VENDOR, 4); 177 dmi_printk(("Serial Number: %s\n", dmi_string(dm, data[7])));
409 dmi_printk(("Product Name: %s\n", 178 dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7);
410 dmi_string(dm, data[5]))); 179 break;
411 dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); 180 case 2:
412 dmi_printk(("Version: %s\n", 181 dmi_printk(("Board Vendor: %s\n", dmi_string(dm, data[4])));
413 dmi_string(dm, data[6]))); 182 dmi_save_ident(dm, DMI_BOARD_VENDOR, 4);
414 dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); 183 dmi_printk(("Board Name: %s\n", dmi_string(dm, data[5])));
415 dmi_printk(("Serial Number: %s\n", 184 dmi_save_ident(dm, DMI_BOARD_NAME, 5);
416 dmi_string(dm, data[7]))); 185 dmi_printk(("Board Version: %s\n", dmi_string(dm, data[6])));
417 break; 186 dmi_save_ident(dm, DMI_BOARD_VERSION, 6);
418 case 2: 187 break;
419 dmi_printk(("Board Vendor: %s\n",
420 dmi_string(dm, data[4])));
421 dmi_save_ident(dm, DMI_BOARD_VENDOR, 4);
422 dmi_printk(("Board Name: %s\n",
423 dmi_string(dm, data[5])));
424 dmi_save_ident(dm, DMI_BOARD_NAME, 5);
425 dmi_printk(("Board Version: %s\n",
426 dmi_string(dm, data[6])));
427 dmi_save_ident(dm, DMI_BOARD_VERSION, 6);
428 break;
429 } 188 }
430} 189}
431 190
432void __init dmi_scan_machine(void) 191void __init dmi_scan_machine(void)
433{ 192{
434 int err = dmi_iterate(dmi_decode); 193 if (dmi_iterate(dmi_decode))
435 if(err == 0)
436 dmi_check_system(dmi_blacklist);
437 else
438 printk(KERN_INFO "DMI not present.\n"); 194 printk(KERN_INFO "DMI not present.\n");
439} 195}
440 196
@@ -470,7 +226,6 @@ fail: d++;
470 226
471 return count; 227 return count;
472} 228}
473
474EXPORT_SYMBOL(dmi_check_system); 229EXPORT_SYMBOL(dmi_check_system);
475 230
476/** 231/**
@@ -480,8 +235,8 @@ EXPORT_SYMBOL(dmi_check_system);
480 * Returns one DMI data value, can be used to perform 235 * Returns one DMI data value, can be used to perform
481 * complex DMI data checks. 236 * complex DMI data checks.
482 */ 237 */
483char * dmi_get_system_info(int field) 238char *dmi_get_system_info(int field)
484{ 239{
485 return dmi_ident[field]; 240 return dmi_ident[field];
486} 241}
487 242EXPORT_SYMBOL(dmi_get_system_info);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-22 17:58:16 -0500