Creation of Cybook 2416 (actually Gen4) repository

drivers/acpi/blacklist.c

@@ -0,0 +1,169 @@
+/*
+ *  blacklist.c
+ *
+ *  Check to see if the given machine has a known bad ACPI BIOS
+ *  or if the BIOS is too old.
+ *
+ *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
+ *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or (at
+ *  your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <linux/dmi.h>
+
+enum acpi_blacklist_predicates {
+	all_versions,
+	less_than_or_equal,
+	equal,
+	greater_than_or_equal,
+};
+
+struct acpi_blacklist_item {
+	char oem_id[7];
+	char oem_table_id[9];
+	u32 oem_revision;
+	char *table;
+	enum acpi_blacklist_predicates oem_revision_predicate;
+	char *reason;
+	u32 is_critical_error;
+};
+
+/*
+ * POLICY: If *anything* doesn't work, put it on the blacklist.
+ *	   If they are critical errors, mark it critical, and abort driver load.
+ */
+static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
+	/* Compaq Presario 1700 */
+	{"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
+	 "Multiple problems", 1},
+	/* Sony FX120, FX140, FX150? */
+	{"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
+	 "ACPI driver problem", 1},
+	/* Compaq Presario 800, Insyde BIOS */
+	{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
+	 "Does not use _REG to protect EC OpRegions", 1},
+	/* IBM 600E - _ADR should return 7, but it returns 1 */
+	{"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
+	 "Incorrect _ADR", 1},
+	{"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
+	 "Bogus PCI routing", 1},
+
+	{""}
+};
+
+#if	CONFIG_ACPI_BLACKLIST_YEAR
+
+static int __init blacklist_by_year(void)
+{
+	int year = dmi_get_year(DMI_BIOS_DATE);
+	/* Doesn't exist? Likely an old system */
+	if (year == -1) {
+		printk(KERN_ERR PREFIX "no DMI BIOS year, "
+			"acpi=force is required to enable ACPI\n" );
+		return 1;
+	}
+	/* 0? Likely a buggy new BIOS */
+	if (year == 0) {
+		printk(KERN_ERR PREFIX "DMI BIOS year==0, "
+			"assuming ACPI-capable machine\n" );
+		return 0;
+	}
+	if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
+		printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
+		       "acpi=force is required to enable ACPI\n",
+		       year, CONFIG_ACPI_BLACKLIST_YEAR);
+		return 1;
+	}
+	return 0;
+}
+#else
+static inline int blacklist_by_year(void)
+{
+	return 0;
+}
+#endif
+
+int __init acpi_blacklisted(void)
+{
+	int i = 0;
+	int blacklisted = 0;
+	struct acpi_table_header table_header;
+
+	while (acpi_blacklist[i].oem_id[0] != '\0') {
+		if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
+			i++;
+			continue;
+		}
+
+		if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
+			i++;
+			continue;
+		}
+
+		if (strncmp
+		    (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
+		     8)) {
+			i++;
+			continue;
+		}
+
+		if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
+		    || (acpi_blacklist[i].oem_revision_predicate ==
+			less_than_or_equal
+			&& table_header.oem_revision <=
+			acpi_blacklist[i].oem_revision)
+		    || (acpi_blacklist[i].oem_revision_predicate ==
+			greater_than_or_equal
+			&& table_header.oem_revision >=
+			acpi_blacklist[i].oem_revision)
+		    || (acpi_blacklist[i].oem_revision_predicate == equal
+			&& table_header.oem_revision ==
+			acpi_blacklist[i].oem_revision)) {
+
+			printk(KERN_ERR PREFIX
+			       "Vendor \"%6.6s\" System \"%8.8s\" "
+			       "Revision 0x%x has a known ACPI BIOS problem.\n",
+			       acpi_blacklist[i].oem_id,
+			       acpi_blacklist[i].oem_table_id,
+			       acpi_blacklist[i].oem_revision);
+
+			printk(KERN_ERR PREFIX
+			       "Reason: %s. This is a %s error\n",
+			       acpi_blacklist[i].reason,
+			       (acpi_blacklist[i].
+				is_critical_error ? "non-recoverable" :
+				"recoverable"));
+
+			blacklisted = acpi_blacklist[i].is_critical_error;
+			break;
+		} else {
+			i++;
+		}
+	}
+
+	blacklisted += blacklist_by_year();
+
+	return blacklisted;
+}