1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  blacklist.c
  4 *
  5 *  Check to see if the given machine has a known bad ACPI BIOS
  6 *  or if the BIOS is too old.
  7 *  Check given machine against acpi_rev_dmi_table[].
  8 *
  9 *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
 10 *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
 11 */
 12
 13#include <linux/kernel.h>
 14#include <linux/init.h>
 15#include <linux/acpi.h>
 16#include <linux/dmi.h>
 17
 18#include "internal.h"
 19
 20#ifdef CONFIG_DMI
 21static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
 22#endif
 23
 24/*
 25 * POLICY: If *anything* doesn't work, put it on the blacklist.
 26 *	   If they are critical errors, mark it critical, and abort driver load.
 27 */
 28static struct acpi_platform_list acpi_blacklist[] __initdata = {
 29	/* Compaq Presario 1700 */
 30	{"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
 31	 "Multiple problems", 1},
 32	/* Sony FX120, FX140, FX150? */
 33	{"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
 34	 "ACPI driver problem", 1},
 35	/* Compaq Presario 800, Insyde BIOS */
 36	{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
 37	 "Does not use _REG to protect EC OpRegions", 1},
 38	/* IBM 600E - _ADR should return 7, but it returns 1 */
 39	{"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
 40	 "Incorrect _ADR", 1},
 41
 42	{ }
 43};
 44
 45int __init acpi_blacklisted(void)
 46{
 47	int i;
 48	int blacklisted = 0;
 49
 50	i = acpi_match_platform_list(acpi_blacklist);
 51	if (i >= 0) {
 52		pr_err(PREFIX "Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
 53		       acpi_blacklist[i].oem_id,
 54		       acpi_blacklist[i].oem_table_id,
 55		       acpi_blacklist[i].oem_revision);
 56
 57		pr_err(PREFIX "Reason: %s. This is a %s error\n",
 58		       acpi_blacklist[i].reason,
 59		       (acpi_blacklist[i].data ?
 60			"non-recoverable" : "recoverable"));
 61
 62		blacklisted = acpi_blacklist[i].data;
 63	}
 64
 65	(void)early_acpi_osi_init();
 66#ifdef CONFIG_DMI
 67	dmi_check_system(acpi_rev_dmi_table);
 68#endif
 69
 70	return blacklisted;
 71}
 72#ifdef CONFIG_DMI
 73#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
 74static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
 75{
 76	printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n",
 77	       d->ident);
 78	acpi_rev_override_setup(NULL);
 79	return 0;
 80}
 81#endif
 82
 83static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
 84#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
 85	/*
 86	 * DELL XPS 13 (2015) switches sound between HDA and I2S
 87	 * depending on the ACPI _REV callback. If userspace supports
 88	 * I2S sufficiently (or if you do not care about sound), you
 89	 * can safely disable this quirk.
 90	 */
 91	{
 92	 .callback = dmi_enable_rev_override,
 93	 .ident = "DELL XPS 13 (2015)",
 94	 .matches = {
 95		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 96		      DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
 97		},
 98	},
 99	{
100	 .callback = dmi_enable_rev_override,
101	 .ident = "DELL Precision 5520",
102	 .matches = {
103		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
104		      DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
105		},
106	},
107	{
108	 .callback = dmi_enable_rev_override,
109	 .ident = "DELL Precision 3520",
110	 .matches = {
111		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
112		      DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
113		},
114	},
115	/*
116	 * Resolves a quirk with the Dell Latitude 3350 that
117	 * causes the ethernet adapter to not function.
118	 */
119	{
120	 .callback = dmi_enable_rev_override,
121	 .ident = "DELL Latitude 3350",
122	 .matches = {
123		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
124		      DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
125		},
126	},
127	{
128	 .callback = dmi_enable_rev_override,
129	 .ident = "DELL Inspiron 7537",
130	 .matches = {
131		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
132		      DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
133		},
134	},
135#endif
136	{}
137};
138
139#endif /* CONFIG_DMI */