drivers/acpi/blacklist.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  blacklist.c
0004  *
0005  *  Check to see if the given machine has a known bad ACPI BIOS
0006  *  or if the BIOS is too old.
0007  *  Check given machine against acpi_rev_dmi_table[].
0008  *
0009  *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
0010  *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
0011  */
0012
0013 #define pr_fmt(fmt) "ACPI: " fmt
0014
0015 #include <linux/kernel.h>
0016 #include <linux/init.h>
0017 #include <linux/acpi.h>
0018 #include <linux/dmi.h>
0019
0020 #include "internal.h"
0021
0022 #ifdef CONFIG_DMI
0023 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
0024 #endif
0025
0026 /*
0027  * POLICY: If *anything* doesn't work, put it on the blacklist.
0028  *     If they are critical errors, mark it critical, and abort driver load.
0029  */
0030 static struct acpi_platform_list acpi_blacklist[] __initdata = {
0031     /* Compaq Presario 1700 */
0032     {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
0033      "Multiple problems", 1},
0034     /* Sony FX120, FX140, FX150? */
0035     {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
0036      "ACPI driver problem", 1},
0037     /* Compaq Presario 800, Insyde BIOS */
0038     {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
0039      "Does not use _REG to protect EC OpRegions", 1},
0040     /* IBM 600E - _ADR should return 7, but it returns 1 */
0041     {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
0042      "Incorrect _ADR", 1},
0043
0044     { }
0045 };
0046
0047 int __init acpi_blacklisted(void)
0048 {
0049     int i;
0050     int blacklisted = 0;
0051
0052     i = acpi_match_platform_list(acpi_blacklist);
0053     if (i >= 0) {
0054         pr_err("Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
0055                acpi_blacklist[i].oem_id,
0056                acpi_blacklist[i].oem_table_id,
0057                acpi_blacklist[i].oem_revision);
0058
0059         pr_err("Reason: %s. This is a %s error\n",
0060                acpi_blacklist[i].reason,
0061                (acpi_blacklist[i].data ?
0062             "non-recoverable" : "recoverable"));
0063
0064         blacklisted = acpi_blacklist[i].data;
0065     }
0066
0067     (void)early_acpi_osi_init();
0068 #ifdef CONFIG_DMI
0069     dmi_check_system(acpi_rev_dmi_table);
0070 #endif
0071
0072     return blacklisted;
0073 }
0074 #ifdef CONFIG_DMI
0075 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
0076 static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
0077 {
0078     pr_notice("DMI detected: %s (force ACPI _REV to 5)\n", d->ident);
0079     acpi_rev_override_setup(NULL);
0080     return 0;
0081 }
0082 #endif
0083
0084 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
0085 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
0086     /*
0087      * DELL XPS 13 (2015) switches sound between HDA and I2S
0088      * depending on the ACPI _REV callback. If userspace supports
0089      * I2S sufficiently (or if you do not care about sound), you
0090      * can safely disable this quirk.
0091      */
0092     {
0093      .callback = dmi_enable_rev_override,
0094      .ident = "DELL XPS 13 (2015)",
0095      .matches = {
0096               DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
0097               DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
0098         },
0099     },
0100     {
0101      .callback = dmi_enable_rev_override,
0102      .ident = "DELL Precision 5520",
0103      .matches = {
0104               DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
0105               DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
0106         },
0107     },
0108     {
0109      .callback = dmi_enable_rev_override,
0110      .ident = "DELL Precision 3520",
0111      .matches = {
0112               DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
0113               DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
0114         },
0115     },
0116     /*
0117      * Resolves a quirk with the Dell Latitude 3350 that
0118      * causes the ethernet adapter to not function.
0119      */
0120     {
0121      .callback = dmi_enable_rev_override,
0122      .ident = "DELL Latitude 3350",
0123      .matches = {
0124               DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
0125               DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
0126         },
0127     },
0128     {
0129      .callback = dmi_enable_rev_override,
0130      .ident = "DELL Inspiron 7537",
0131      .matches = {
0132               DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
0133               DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
0134         },
0135     },
0136 #endif
0137     {}
0138 };
0139
0140 #endif /* CONFIG_DMI */