#include #include #include #include #include #include #include #include #include #include #include unsigned long dmi_broken; int is_sony_vaio_laptop; struct dmi_header { u8 type; u8 length; u16 handle; }; #define dmi_printk(x) //#define dmi_printk(x) printk x static char * __init dmi_string(struct dmi_header *dm, u8 s) { u8 *bp=(u8 *)dm; bp+=dm->length; if(!s) return ""; s--; while(s>0) { bp+=strlen(bp); bp++; s--; } return bp; } /* * We have to be cautious here. We have seen BIOSes with DMI pointers * pointing to completely the wrong place for example */ static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dmi_header *)) { u8 *buf; struct dmi_header *dm; u8 *data; int i=1; buf = ioremap(base, len); if(buf==NULL) return -1; data = buf; /* * Stop when we see al the items the table claimed to have * OR we run off the end of the table (also happens) */ while(ilength) >= len) break; decode(dm); data+=dm->length; /* * Don't go off the end of the data if there is * stuff looking like string fill past the end */ while((data-buf) < len && (*data || data[1])) data++; data+=2; i++; } iounmap(buf); return 0; } static int __init dmi_iterate(void (*decode)(struct dmi_header *)) { unsigned char buf[20]; long fp=0xE0000L; fp -= 16; #ifdef CONFIG_SIMNOW /* * Skip on x86/64 with simnow. Will eventually go away * If you see this ifdef in 2.6pre mail me ! */ return -1; #endif while( fp < 0xFFFFF) { fp+=16; isa_memcpy_fromio(buf, fp, 20); if(memcmp(buf, "_DMI_", 5)==0) { u16 num=buf[13]<<8|buf[12]; u16 len=buf[7]<<8|buf[6]; u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8]; dmi_printk((KERN_INFO "DMI %d.%d present.\n", buf[14]>>4, buf[14]&0x0F)); dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n", buf[13]<<8|buf[12], buf[7]<<8|buf[6])); dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8])); if(dmi_table(base,len, num, decode)==0) return 0; } } return -1; } enum { DMI_BIOS_VENDOR, DMI_BIOS_VERSION, DMI_BIOS_DATE, DMI_SYS_VENDOR, DMI_PRODUCT_NAME, DMI_PRODUCT_VERSION, DMI_BOARD_VENDOR, DMI_BOARD_NAME, DMI_BOARD_VERSION, DMI_STRING_MAX }; static char *dmi_ident[DMI_STRING_MAX]; /* * Save a DMI string */ static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string) { char *d = (char*)dm; char *p = dmi_string(dm, d[string]); if(p==NULL || *p == 0) return; if (dmi_ident[slot]) return; dmi_ident[slot] = kmalloc(strlen(p)+1, GFP_KERNEL); if(dmi_ident[slot]) strcpy(dmi_ident[slot], p); else printk(KERN_ERR "dmi_save_ident: out of memory.\n"); } /* * DMI callbacks for problem boards */ struct dmi_strmatch { u8 slot; char *substr; }; #define NONE 255 struct dmi_blacklist { int (*callback)(struct dmi_blacklist *); char *ident; struct dmi_strmatch matches[4]; }; #define NO_MATCH { NONE, NULL} #define MATCH(a,b) { a, b } /* * We have problems with IDE DMA on some platforms. In paticular the * KT7 series. On these it seems the newer BIOS has fixed them. The * rule needs to be improved to match specific BIOS revisions with * corruption problems */ static __init int disable_ide_dma(struct dmi_blacklist *d) { #ifdef CONFIG_BLK_DEV_IDE extern int noautodma; if(noautodma == 0) { noautodma = 1; printk(KERN_INFO "%s series board detected. Disabling IDE DMA.\n", d->ident); } #endif return 0; } /* * Reboot options and system auto-detection code provided by * Dell Computer Corporation so their systems "just work". :-) */ /* * Some machines require the "reboot=b" commandline option, this quirk makes that automatic. */ static __init int set_bios_reboot(struct dmi_blacklist *d) { extern int reboot_thru_bios; if (reboot_thru_bios == 0) { reboot_thru_bios = 1; printk(KERN_INFO "%s series board detected. Selecting BIOS-method for reboots.\n", d->ident); } return 0; } /* * Some machines require the "reboot=s" commandline option, this quirk makes that automatic. */ static __init int set_smp_reboot(struct dmi_blacklist *d) { #ifdef CONFIG_SMP extern int reboot_smp; if (reboot_smp == 0) { reboot_smp = 1; printk(KERN_INFO "%s series board detected. Selecting SMP-method for reboots.\n", d->ident); } #endif return 0; } /* * Some machines require the "reboot=b,s" commandline option, this quirk makes that automatic. */ static __init int set_smp_bios_reboot(struct dmi_blacklist *d) { set_smp_reboot(d); set_bios_reboot(d); return 0; } /* * Some bioses have a broken protected mode poweroff and need to use realmode */ static __init int set_realmode_power_off(struct dmi_blacklist *d) { if (apm_info.realmode_power_off == 0) { apm_info.realmode_power_off = 1; printk(KERN_INFO "%s bios detected. Using realmode poweroff only.\n", d->ident); } return 0; } /* * Some laptops require interrupts to be enabled during APM calls */ static __init int set_apm_ints(struct dmi_blacklist *d) { if (apm_info.allow_ints == 0) { apm_info.allow_ints = 1; printk(KERN_INFO "%s machine detected. Enabling interrupts during APM calls.\n", d->ident); } return 0; } /* * Some APM bioses corrupt memory or just plain do not work */ static __init int apm_is_horked(struct dmi_blacklist *d) { if (apm_info.disabled == 0) { apm_info.disabled = 1; printk(KERN_INFO "%s machine detected. Disabling APM.\n", d->ident); } return 0; } /* * Check for clue free BIOS implementations who use * the following QA technique * * [ Write BIOS Code ]<------ * | ^ * < Does it Compile >----N-- * |Y ^ * < Does it Boot Win98 >-N-- * |Y * [Ship It] * * Phoenix A04 08/24/2000 is known bad (Dell Inspiron 5000e) * Phoenix A07 09/29/2000 is known good (Dell Inspiron 5000) */ static __init int broken_apm_power(struct dmi_blacklist *d) { apm_info.get_power_status_broken = 1; printk(KERN_WARNING "BIOS strings suggest APM bugs, disabling power status reporting.\n"); return 0; } /* * Check for a Sony Vaio system * * On a Sony system we want to enable the use of the sonypi * driver for Sony-specific goodies like the camera and jogdial. * We also want to avoid using certain functions of the PnP BIOS. */ static __init int sony_vaio_laptop(struct dmi_blacklist *d) { if (is_sony_vaio_laptop == 0) { is_sony_vaio_laptop = 1; printk(KERN_INFO "%s laptop detected.\n", d->ident); } return 0; } /* * This bios swaps the APM minute reporting bytes over (Many sony laptops * have this problem). */ static __init int swab_apm_power_in_minutes(struct dmi_blacklist *d) { apm_info.get_power_status_swabinminutes = 1; printk(KERN_WARNING "BIOS strings suggest APM reports battery life in minutes and wrong byte order.\n"); return 0; } /* * The Intel 440GX hall of shame. * * On many (all we have checked) of these boxes the $PIRQ table is wrong. * The MP1.4 table is right however and so SMP kernels tend to work. */ static __init int broken_pirq(struct dmi_blacklist *d) { printk(KERN_INFO " *** Possibly defective BIOS detected (irqtable)\n"); printk(KERN_INFO " *** Many BIOSes matching this signature have incorrect IRQ routing tables.\n"); printk(KERN_INFO " *** If you see IRQ problems, in paticular SCSI resets and hangs at boot\n"); printk(KERN_INFO " *** contact your hardware vendor and ask about updates.\n"); printk(KERN_INFO " *** Building an SMP kernel may evade the bug some of the time.\n"); return 0; } /* * ASUS K7V-RM has broken ACPI table defining sleep modes */ static __init int broken_acpi_Sx(struct dmi_blacklist *d) { printk(KERN_WARNING "Detected ASUS mainboard with broken ACPI sleep table\n"); dmi_broken |= BROKEN_ACPI_Sx; return 0; } /* * Toshiba keyboard likes to repeat keys when they are not repeated. */ static __init int broken_toshiba_keyboard(struct dmi_blacklist *d) { printk(KERN_WARNING "Toshiba with broken keyboard detected. If your keyboard sometimes generates 3 keypresses instead of one, contact pavel@ucw.cz\n"); return 0; } /* * Toshiba fails to preserve interrupts over S1 */ static __init int init_ints_after_s1(struct dmi_blacklist *d) { printk(KERN_WARNING "Toshiba with broken S1 detected.\n"); dmi_broken |= BROKEN_INIT_AFTER_S1; return 0; } /* * Some Bioses enable the PS/2 mouse (touchpad) at resume, even if it * was disabled before the suspend. Linux gets terribly confused by that. */ typedef void (pm_kbd_func) (void); static __init int broken_ps2_resume(struct dmi_blacklist *d) { #ifdef CONFIG_VT if (pm_kbd_request_override == NULL) { pm_kbd_request_override = pckbd_pm_resume; printk(KERN_INFO "%s machine detected. Mousepad Resume Bug workaround enabled.\n", d->ident); } #endif return 0; } /* * Simple "print if true" callback */ static __init int print_if_true(struct dmi_blacklist *d) { printk("%s\n", d->ident); return 0; } /* * Process the DMI blacklists */ /* * This will be expanded over time to force things like the APM * interrupt mask settings according to the laptop */ static __initdata struct dmi_blacklist dmi_blacklist[]={ #if 0 { disable_ide_dma, "KT7", { /* Overbroad right now - kill DMA on problem KT7 boards */ MATCH(DMI_PRODUCT_NAME, "KT7-RAID"), NO_MATCH, NO_MATCH, NO_MATCH } }, #endif { broken_ps2_resume, "Dell Latitude C600", { /* Handle problems with APM on the C600 */ MATCH(DMI_SYS_VENDOR, "Dell"), MATCH(DMI_PRODUCT_NAME, "Latitude C600"), NO_MATCH, NO_MATCH } }, { broken_apm_power, "Dell Inspiron 5000e", { /* Handle problems with APM on Inspiron 5000e */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "A04"), MATCH(DMI_BIOS_DATE, "08/24/2000"), NO_MATCH } }, { set_realmode_power_off, "Award Software v4.60 PGMA", { /* broken PM poweroff bios */ MATCH(DMI_BIOS_VENDOR, "Award Software International, Inc."), MATCH(DMI_BIOS_VERSION, "4.60 PGMA"), MATCH(DMI_BIOS_DATE, "134526184"), NO_MATCH } }, { set_smp_bios_reboot, "Dell PowerEdge 1300", { /* Handle problems with rebooting on Dell 1300's */ MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), MATCH(DMI_PRODUCT_NAME, "PowerEdge 1300/"), NO_MATCH, NO_MATCH } }, { set_bios_reboot, "Dell PowerEdge 300", { /* Handle problems with rebooting on Dell 1300's */ MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), MATCH(DMI_PRODUCT_NAME, "PowerEdge 300/"), NO_MATCH, NO_MATCH } }, { set_apm_ints, "Dell Inspiron", { /* Allow interrupts during suspend on Dell Inspiron laptops*/ MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), MATCH(DMI_PRODUCT_NAME, "Inspiron 4000"), NO_MATCH, NO_MATCH } }, { set_apm_ints, "Compaq 12XL125", { /* Allow interrupts during suspend on Compaq Laptops*/ MATCH(DMI_SYS_VENDOR, "Compaq"), MATCH(DMI_PRODUCT_NAME, "Compaq PC"), MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION,"4.06") } }, { set_apm_ints, "ASUSTeK", { /* Allow interrupts during APM or the clock goes slow */ MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), MATCH(DMI_PRODUCT_NAME, "L8400K series Notebook PC"), NO_MATCH, NO_MATCH } }, { apm_is_horked, "Trigem Delhi3", { /* APM crashes */ MATCH(DMI_SYS_VENDOR, "TriGem Computer, Inc"), MATCH(DMI_PRODUCT_NAME, "Delhi3"), NO_MATCH, NO_MATCH, } }, { apm_is_horked, "Sharp PC-PJ/AX", { /* APM crashes */ MATCH(DMI_SYS_VENDOR, "SHARP"), MATCH(DMI_PRODUCT_NAME, "PC-PJ/AX"), MATCH(DMI_BIOS_VENDOR,"SystemSoft"), MATCH(DMI_BIOS_VERSION,"Version R2.08") } }, { sony_vaio_laptop, "Sony Vaio", { /* This is a Sony Vaio laptop */ MATCH(DMI_SYS_VENDOR, "Sony Corporation"), MATCH(DMI_PRODUCT_NAME, "PCG-"), NO_MATCH, NO_MATCH, } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-N505X(DE) */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0206H"), MATCH(DMI_BIOS_DATE, "08/23/99"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-N505VX */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "W2K06H0"), MATCH(DMI_BIOS_DATE, "02/03/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-XG29 */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0117A0"), MATCH(DMI_BIOS_DATE, "04/25/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-Z600NE */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0121Z1"), MATCH(DMI_BIOS_DATE, "05/11/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-Z600NE */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "WME01Z1"), MATCH(DMI_BIOS_DATE, "08/11/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-Z505LS */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0203D0"), MATCH(DMI_BIOS_DATE, "05/12/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-Z505LS */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0203Z3"), MATCH(DMI_BIOS_DATE, "08/25/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-F104K */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0204K2"), MATCH(DMI_BIOS_DATE, "08/28/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-C1VN/C1VE */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0208P1"), MATCH(DMI_BIOS_DATE, "11/09/00"), NO_MATCH } }, { swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-C1VE */ MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), MATCH(DMI_BIOS_VERSION, "R0204P1"), MATCH(DMI_BIOS_DATE, "09/12/00"), NO_MATCH } }, /* Problem Intel 440GX bioses */ { broken_pirq, "SABR1 Bios", { /* Bad $PIR */ MATCH(DMI_BIOS_VENDOR, "Intel Corporation"), MATCH(DMI_BIOS_VERSION,"SABR1"), NO_MATCH, NO_MATCH } }, { broken_pirq, "l44GX Bios", { /* Bad $PIR */ MATCH(DMI_BIOS_VENDOR, "Intel Corporation"), MATCH(DMI_BIOS_VERSION,"L440GX0.86B.0094.P10"), NO_MATCH, NO_MATCH } }, { broken_pirq, "l44GX Bios", { /* Bad $PIR */ MATCH(DMI_BIOS_VENDOR, "Intel Corporation"), MATCH(DMI_BIOS_VERSION,"L440GX0.86B.0120.P12"), NO_MATCH, NO_MATCH } }, { broken_pirq, "l44GX Bios", { /* Bad $PIR */ MATCH(DMI_BIOS_VENDOR, "Intel Corporation"), MATCH(DMI_BIOS_VERSION,"L440GX0.86B.0125.P13"), NO_MATCH, NO_MATCH } }, { broken_pirq, "l44GX Bios", { /* Bad $PIR */ MATCH(DMI_BIOS_VENDOR, "Intel Corporation"), MATCH(DMI_BIOS_VERSION,"L440GX0.86B.0066.P07.9906041405"), NO_MATCH, NO_MATCH } }, /* Intel in disgiuse - In this case they can't hide and they don't run too well either... */ { broken_pirq, "Dell PowerEdge 8450", { /* Bad $PIR */ MATCH(DMI_PRODUCT_NAME, "Dell PowerEdge 8450"), NO_MATCH, NO_MATCH, NO_MATCH } }, { broken_acpi_Sx, "ASUS K7V-RM", { /* Bad ACPI Sx table */ MATCH(DMI_BIOS_VERSION,"ASUS K7V-RM ACPI BIOS Revision 1003A"), MATCH(DMI_BOARD_NAME, ""), NO_MATCH, NO_MATCH } }, { broken_toshiba_keyboard, "Toshiba Satellite 4030cdt", { /* Keyboard generates spurious repeats */ MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), NO_MATCH, NO_MATCH, NO_MATCH } }, { init_ints_after_s1, "Toshiba Satellite 4030cdt", { /* Reinitialization of 8259 is needed after S1 resume */ MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), NO_MATCH, NO_MATCH, NO_MATCH } }, { print_if_true, KERN_WARNING "IBM T23 - BIOS 1.03b+ and controller firmware 1.02+ may be needed for Linux APM.", { MATCH(DMI_SYS_VENDOR, "IBM"), MATCH(DMI_BIOS_VERSION, "1AET38WW (1.01b)"), NO_MATCH, NO_MATCH } }, /* * Generic per vendor APM settings */ { set_apm_ints, "IBM", { /* Allow interrupts during suspend on IBM laptops */ MATCH(DMI_SYS_VENDOR, "IBM"), NO_MATCH, NO_MATCH, NO_MATCH } }, { NULL, } }; /* * Walk the blacklist table running matching functions until someone * returns 1 or we hit the end. */ static __init void dmi_check_blacklist(void) { struct dmi_blacklist *d; int i; d=&dmi_blacklist[0]; while(d->callback) { for(i=0;i<4;i++) { int s = d->matches[i].slot; if(s==NONE) continue; if(dmi_ident[s] && strstr(dmi_ident[s], d->matches[i].substr)) continue; /* No match */ goto fail; } if(d->callback(d)) return; fail: d++; } } /* * Process a DMI table entry. Right now all we care about are the BIOS * and machine entries. For 2.5 we should pull the smbus controller info * out of here. */ static void __init dmi_decode(struct dmi_header *dm) { u8 *data = (u8 *)dm; char *p; switch(dm->type) { case 0: p=dmi_string(dm,data[4]); if(*p) { dmi_printk(("BIOS Vendor: %s\n", p)); dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); dmi_printk(("BIOS Version: %s\n", dmi_string(dm, data[5]))); dmi_save_ident(dm, DMI_BIOS_VERSION, 5); dmi_printk(("BIOS Release: %s\n", dmi_string(dm, data[8]))); dmi_save_ident(dm, DMI_BIOS_DATE, 8); } break; case 1: p=dmi_string(dm,data[4]); if(*p) { dmi_printk(("System Vendor: %s.\n",p)); dmi_save_ident(dm, DMI_SYS_VENDOR, 4); dmi_printk(("Product Name: %s.\n", dmi_string(dm, data[5]))); dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); dmi_printk(("Version %s.\n", dmi_string(dm, data[6]))); dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); dmi_printk(("Serial Number %s.\n", dmi_string(dm, data[7]))); } break; case 2: p=dmi_string(dm,data[4]); if(*p) { dmi_printk(("Board Vendor: %s.\n",p)); dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); dmi_printk(("Board Name: %s.\n", dmi_string(dm, data[5]))); dmi_save_ident(dm, DMI_BOARD_NAME, 5); dmi_printk(("Board Version: %s.\n", dmi_string(dm, data[6]))); dmi_save_ident(dm, DMI_BOARD_VERSION, 6); } break; case 3: p=dmi_string(dm,data[8]); if(*p && *p!=' ') dmi_printk(("Asset Tag: %s.\n", p)); break; } } static int __init dmi_scan_machine(void) { int err = dmi_iterate(dmi_decode); if(err == 0) dmi_check_blacklist(); return err; } module_init(dmi_scan_machine);