From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/i386/kernel/dmi_scan.c | 487 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 487 insertions(+) create mode 100644 arch/i386/kernel/dmi_scan.c (limited to 'arch/i386/kernel/dmi_scan.c') diff --git a/arch/i386/kernel/dmi_scan.c b/arch/i386/kernel/dmi_scan.c new file mode 100644 index 000000000000..6ed7e28f306c --- /dev/null +++ b/arch/i386/kernel/dmi_scan.c @@ -0,0 +1,487 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +struct dmi_header +{ + u8 type; + u8 length; + u16 handle; +}; + +#undef DMI_DEBUG + +#ifdef DMI_DEBUG +#define dmi_printk(x) printk x +#else +#define dmi_printk(x) +#endif + +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) + { + 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=0; + + buf = bt_ioremap(base, len); + if(buf==NULL) + return -1; + + data = buf; + + /* + * Stop when we see all the items the table claimed to have + * OR we run off the end of the table (also happens) + */ + + while(ilength; + while(data-buf>4, buf[14]&0x0F); + else + printk(KERN_INFO "DMI present.\n"); + dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n", + num, len)); + dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", + base)); + if(dmi_table(base,len, num, decode)==0) + return 0; + } + } + return -1; +} + +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] = alloc_bootmem(strlen(p)+1); + if(dmi_ident[slot]) + strcpy(dmi_ident[slot], p); + else + printk(KERN_ERR "dmi_save_ident: out of memory.\n"); +} + +/* + * Ugly compatibility crap. + */ +#define dmi_blacklist dmi_system_id +#define NO_MATCH { DMI_NONE, NULL} +#define MATCH DMI_MATCH + +/* + * 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, see http://davyd.ucc.asn.au/projects/toshiba/README\n"); + return 0; +} + + +#ifdef CONFIG_ACPI_SLEEP +static __init int reset_videomode_after_s3(struct dmi_blacklist *d) +{ + /* See acpi_wakeup.S */ + extern long acpi_video_flags; + acpi_video_flags |= 2; + return 0; +} +#endif + + +#ifdef CONFIG_ACPI_BOOT +extern int acpi_force; + +static __init __attribute__((unused)) int dmi_disable_acpi(struct dmi_blacklist *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: acpi off\n",d->ident); + disable_acpi(); + } else { + printk(KERN_NOTICE + "Warning: DMI blacklist says broken, but acpi forced\n"); + } + return 0; +} + +/* + * Limit ACPI to CPU enumeration for HT + */ +static __init __attribute__((unused)) int force_acpi_ht(struct dmi_blacklist *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", d->ident); + disable_acpi(); + acpi_ht = 1; + } else { + printk(KERN_NOTICE + "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); + } + return 0; +} +#endif + +#ifdef CONFIG_ACPI_PCI +static __init int disable_acpi_irq(struct dmi_blacklist *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", + d->ident); + acpi_noirq_set(); + } + return 0; +} +static __init int disable_acpi_pci(struct dmi_blacklist *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", + d->ident); + acpi_disable_pci(); + } + return 0; +} +#endif + +/* + * 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[]={ + + { broken_toshiba_keyboard, "Toshiba Satellite 4030cdt", { /* Keyboard generates spurious repeats */ + MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), + NO_MATCH, NO_MATCH, NO_MATCH + } }, +#ifdef CONFIG_ACPI_SLEEP + { reset_videomode_after_s3, "Toshiba Satellite 4030cdt", { /* Reset video mode after returning from ACPI S3 sleep */ + MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), + NO_MATCH, NO_MATCH, NO_MATCH + } }, +#endif + +#ifdef CONFIG_ACPI_BOOT + /* + * If your system is blacklisted here, but you find that acpi=force + * works for you, please contact acpi-devel@sourceforge.net + */ + + /* + * Boxes that need ACPI disabled + */ + + { dmi_disable_acpi, "IBM Thinkpad", { + MATCH(DMI_BOARD_VENDOR, "IBM"), + MATCH(DMI_BOARD_NAME, "2629H1G"), + NO_MATCH, NO_MATCH }}, + + /* + * Boxes that need acpi=ht + */ + + { force_acpi_ht, "FSC Primergy T850", { + MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), + MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "DELL GX240", { + MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"), + MATCH(DMI_BOARD_NAME, "OptiPlex GX240"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "HP VISUALIZE NT Workstation", { + MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "Compaq Workstation W8000", { + MATCH(DMI_SYS_VENDOR, "Compaq"), + MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "ASUS P4B266", { + MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + MATCH(DMI_BOARD_NAME, "P4B266"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "ASUS P2B-DS", { + MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + MATCH(DMI_BOARD_NAME, "P2B-DS"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "ASUS CUR-DLS", { + MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + MATCH(DMI_BOARD_NAME, "CUR-DLS"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "ABIT i440BX-W83977", { + MATCH(DMI_BOARD_VENDOR, "ABIT "), + MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "IBM Bladecenter", { + MATCH(DMI_BOARD_VENDOR, "IBM"), + MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "IBM eServer xSeries 360", { + MATCH(DMI_BOARD_VENDOR, "IBM"), + MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "IBM eserver xSeries 330", { + MATCH(DMI_BOARD_VENDOR, "IBM"), + MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), + NO_MATCH, NO_MATCH }}, + + { force_acpi_ht, "IBM eserver xSeries 440", { + MATCH(DMI_BOARD_VENDOR, "IBM"), + MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), + NO_MATCH, NO_MATCH }}, + +#endif // CONFIG_ACPI_BOOT + +#ifdef CONFIG_ACPI_PCI + /* + * Boxes that need ACPI PCI IRQ routing disabled + */ + + { disable_acpi_irq, "ASUS A7V", { + MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), + MATCH(DMI_BOARD_NAME, ""), + /* newer BIOS, Revision 1011, does work */ + MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"), + NO_MATCH }}, + + /* + * Boxes that need ACPI PCI IRQ routing and PCI scan disabled + */ + { disable_acpi_pci, "ASUS PR-DLS", { /* _BBN 0 bug */ + MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + MATCH(DMI_BOARD_NAME, "PR-DLS"), + MATCH(DMI_BIOS_VERSION, "ASUS PR-DLS ACPI BIOS Revision 1010"), + MATCH(DMI_BIOS_DATE, "03/21/2003") }}, + + { disable_acpi_pci, "Acer TravelMate 36x Laptop", { + MATCH(DMI_SYS_VENDOR, "Acer"), + MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), + NO_MATCH, NO_MATCH + } }, + +#endif + + { NULL, } +}; + +/* + * 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) +{ +#ifdef DMI_DEBUG + u8 *data = (u8 *)dm; +#endif + + switch(dm->type) + { + case 0: + dmi_printk(("BIOS Vendor: %s\n", + dmi_string(dm, data[4]))); + 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: + dmi_printk(("System Vendor: %s\n", + dmi_string(dm, data[4]))); + 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: + dmi_printk(("Board Vendor: %s\n", + dmi_string(dm, data[4]))); + 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; + } +} + +void __init dmi_scan_machine(void) +{ + int err = dmi_iterate(dmi_decode); + if(err == 0) + dmi_check_system(dmi_blacklist); + else + printk(KERN_INFO "DMI not present.\n"); +} + + +/** + * dmi_check_system - check system DMI data + * @list: array of dmi_system_id structures to match against + * + * Walk the blacklist table running matching functions until someone + * returns non zero or we hit the end. Callback function is called for + * each successfull match. Returns the number of matches. + */ +int dmi_check_system(struct dmi_system_id *list) +{ + int i, count = 0; + struct dmi_system_id *d = list; + + while (d->ident) { + for (i = 0; i < ARRAY_SIZE(d->matches); i++) { + int s = d->matches[i].slot; + if (s == DMI_NONE) + continue; + if (dmi_ident[s] && strstr(dmi_ident[s], d->matches[i].substr)) + continue; + /* No match */ + goto fail; + } + if (d->callback && d->callback(d)) + break; + count++; +fail: d++; + } + + return count; +} + +EXPORT_SYMBOL(dmi_check_system); + +/** + * dmi_get_system_info - return DMI data value + * @field: data index (see enum dmi_filed) + * + * Returns one DMI data value, can be used to perform + * complex DMI data checks. + */ +char * dmi_get_system_info(int field) +{ + return dmi_ident[field]; +} + -- cgit v1.2.2