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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 13:33:11 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 13:33:11 -0800
commitd276709ce6c90b9eceecdbd01a0c083ab04d3a52 (patch)
tree66e935a1bffa699463c8c45dbc15b3e85c82a1b3 /drivers/firmware
parentef8006846a3a97d9d8bf49e63dba948d0d2dbbf0 (diff)
parent8167e00e9e35ad90f62e2e424c80c9bc4f3adf7b (diff)
Merge tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki: "These are ACPICA updates including ACPI 6.3 support among other things, APEI updates including the ARM Software Delegated Exception Interface (SDEI) support, ACPI EC driver fixes and cleanups and other assorted improvements. Specifics: - Update the ACPICA code in the kernel to upstream revision 20190215 including ACPI 6.3 support and more: * New predefined methods: _NBS, _NCH, _NIC, _NIH, and _NIG (Erik Schmauss). * Update of the PCC Identifier structure in PDTT (Erik Schmauss). * Support for new Generic Affinity Structure subtable in SRAT (Erik Schmauss). * New PCC operation region support (Erik Schmauss). * Support for GICC statistical profiling for MADT (Erik Schmauss). * New Error Disconnect Recover notification support (Erik Schmauss). * New PPTT Processor Structure Flags fields support (Erik Schmauss). * ACPI 6.3 HMAT updates (Erik Schmauss). * GTDT Revision 3 support (Erik Schmauss). * Legacy module-level code (MLC) support removal (Erik Schmauss). * Update/clarification of messages for control method failures (Bob Moore). * Warning on creation of a zero-length opregion (Bob Moore). * acpiexec option to dump extra info for memory leaks (Bob Moore). * More ACPI error to firmware error conversions (Bob Moore). * Debugger fix (Bob Moore). * Copyrights update (Bob Moore) - Clean up sleep states support code in ACPICA (Christoph Hellwig) - Rework in_nmi() handling in the APEI code and add suppor for the ARM Software Delegated Exception Interface (SDEI) to it (James Morse) - Fix possible out-of-bounds accesses in BERT-related core (Ross Lagerwall) - Fix the APEI code parsing HEST that includes a Deferred Machine Check subtable (Yazen Ghannam) - Use DEFINE_DEBUGFS_ATTRIBUTE for APEI-related debugfs files (YueHaibing) - Switch the APEI ERST code to the new generic UUID API (Andy Shevchenko) - Update the MAINTAINERS entry for APEI (Borislav Petkov) - Fix and clean up the ACPI EC driver (Rafael Wysocki, Zhang Rui) - Fix DMI checks handling in the ACPI backlight driver and add the "Lunch Box" chassis-type check to it (Hans de Goede) - Add support for using ACPI table overrides included in built-in initrd images (Shunyong Yang) - Update ACPI device enumeration to treat the PWM2 device as "always present" on Lenovo Yoga Book (Yauhen Kharuzhy) - Fix up the enumeration of device objects with the PRP0001 device ID (Andy Shevchenko) - Clean up PPTT parsing error messages (John Garry) - Clean up debugfs files creation handling (Greg Kroah-Hartman, Rafael Wysocki) - Clean up the ACPI DPTF Makefile (Masahiro Yamada)" * tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits) ACPI / bus: Respect PRP0001 when retrieving device match data ACPICA: Update version to 20190215 ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting ACPICA: ACPI 6.3: add GTDT Revision 3 support ACPICA: ACPI 6.3: HMAT updates ACPICA: ACPI 6.3: PPTT add additional fields in Processor Structure Flags ACPICA: ACPI 6.3: add Error Disconnect Recover Notification value ACPICA: ACPI 6.3: MADT: add support for statistical profiling in GICC ACPICA: ACPI 6.3: add PCC operation region support for AML interpreter efi: cper: Fix possible out-of-bounds access ACPI: APEI: Fix possible out-of-bounds access to BERT region ACPICA: ACPI 6.3: SRAT: add Generic Affinity Structure subtable ACPICA: ACPI 6.3: Add Trigger order to PCC Identifier structure in PDTT ACPICA: ACPI 6.3: Adding predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG ACPICA: Update/clarify messages for control method failures ACPICA: Debugger: Fix possible fault with the "test objects" command ACPICA: Interpreter: Emit warning for creation of a zero-length op region ACPICA: Remove legacy module-level code support ACPI / x86: Make PWM2 device always present at Lenovo Yoga Book ACPI / video: Extend chassis-type detection with a "Lunch Box" check ..
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/arm_sdei.c68
-rw-r--r--drivers/firmware/efi/cper.c13
2 files changed, 77 insertions, 4 deletions
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index c64c7da73829..e6376f985ef7 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -2,6 +2,7 @@
// Copyright (C) 2017 Arm Ltd.
#define pr_fmt(fmt) "sdei: " fmt
+#include <acpi/ghes.h>
#include <linux/acpi.h>
#include <linux/arm_sdei.h>
#include <linux/arm-smccc.h>
@@ -887,6 +888,73 @@ static void sdei_smccc_hvc(unsigned long function_id,
arm_smccc_hvc(function_id, arg0, arg1, arg2, arg3, arg4, 0, 0, res);
}
+int sdei_register_ghes(struct ghes *ghes, sdei_event_callback *normal_cb,
+ sdei_event_callback *critical_cb)
+{
+ int err;
+ u64 result;
+ u32 event_num;
+ sdei_event_callback *cb;
+
+ if (!IS_ENABLED(CONFIG_ACPI_APEI_GHES))
+ return -EOPNOTSUPP;
+
+ event_num = ghes->generic->notify.vector;
+ if (event_num == 0) {
+ /*
+ * Event 0 is reserved by the specification for
+ * SDEI_EVENT_SIGNAL.
+ */
+ return -EINVAL;
+ }
+
+ err = sdei_api_event_get_info(event_num, SDEI_EVENT_INFO_EV_PRIORITY,
+ &result);
+ if (err)
+ return err;
+
+ if (result == SDEI_EVENT_PRIORITY_CRITICAL)
+ cb = critical_cb;
+ else
+ cb = normal_cb;
+
+ err = sdei_event_register(event_num, cb, ghes);
+ if (!err)
+ err = sdei_event_enable(event_num);
+
+ return err;
+}
+
+int sdei_unregister_ghes(struct ghes *ghes)
+{
+ int i;
+ int err;
+ u32 event_num = ghes->generic->notify.vector;
+
+ might_sleep();
+
+ if (!IS_ENABLED(CONFIG_ACPI_APEI_GHES))
+ return -EOPNOTSUPP;
+
+ /*
+ * The event may be running on another CPU. Disable it
+ * to stop new events, then try to unregister a few times.
+ */
+ err = sdei_event_disable(event_num);
+ if (err)
+ return err;
+
+ for (i = 0; i < 3; i++) {
+ err = sdei_event_unregister(event_num);
+ if (err != -EINPROGRESS)
+ break;
+
+ schedule();
+ }
+
+ return err;
+}
+
static int sdei_get_conduit(struct platform_device *pdev)
{
const char *method;
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index 6a966ecdd80a..8fa977c7861f 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -534,19 +534,24 @@ EXPORT_SYMBOL_GPL(cper_estatus_check_header);
int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
{
struct acpi_hest_generic_data *gdata;
- unsigned int data_len, gedata_len;
+ unsigned int data_len, record_size;
int rc;
rc = cper_estatus_check_header(estatus);
if (rc)
return rc;
+
data_len = estatus->data_length;
apei_estatus_for_each_section(estatus, gdata) {
- gedata_len = acpi_hest_get_error_length(gdata);
- if (gedata_len > data_len - acpi_hest_get_size(gdata))
+ if (sizeof(struct acpi_hest_generic_data) > data_len)
+ return -EINVAL;
+
+ record_size = acpi_hest_get_record_size(gdata);
+ if (record_size > data_len)
return -EINVAL;
- data_len -= acpi_hest_get_record_size(gdata);
+
+ data_len -= record_size;
}
if (data_len)
return -EINVAL;