/*
* Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM
*
* 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.
*
* Communication to userspace based on kernel/printk.c
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/poll.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/vmalloc.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/rtas.h>
#include <asm/prom.h>
#if 0
#define DEBUG(A...) printk(KERN_ERR A)
#else
#define DEBUG(A...)
#endif
static spinlock_t rtas_log_lock = SPIN_LOCK_UNLOCKED;
DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait);
#define LOG_NUMBER 64 /* must be a power of two */
#define LOG_NUMBER_MASK (LOG_NUMBER-1)
static char *rtas_log_buf;
static unsigned long rtas_log_start;
static unsigned long rtas_log_size;
static int surveillance_requested;
static unsigned int rtas_event_scan_rate;
static unsigned int rtas_error_log_max;
#define EVENT_SCAN_ALL_EVENTS 0xf0000000
#define SURVEILLANCE_TOKEN 9000
#define SURVEILLANCE_TIMEOUT 1
#define SURVEILLANCE_SCANRATE 1
extern struct proc_dir_entry *proc_ppc64_root;
extern struct proc_dir_entry *rtas_proc_dir;
extern spinlock_t proc_ppc64_lock;
/*
* Since we use 32 bit RTAS, the physical address of this must be below
* 4G or else bad things happen. Allocate this in the kernel data and
* make it big enough.
*/
#define RTAS_ERROR_LOG_MAX 1024
static unsigned char logdata[RTAS_ERROR_LOG_MAX];
static int rtas_log_open(struct inode * inode, struct file * file)
{
return 0;
}
static int rtas_log_release(struct inode * inode, struct file * file)
{
return 0;
}
static ssize_t rtas_log_read(struct file * file, char * buf,
size_t count, loff_t *ppos)
{
int error;
char *tmp;
unsigned long offset;
if (!buf || count < rtas_error_log_max)
return -EINVAL;
count = rtas_error_log_max;
error = verify_area(VERIFY_WRITE, buf, count);
if (error)
return -EINVAL;
tmp = kmalloc(rtas_error_log_max, GFP_KERNEL);
if (!tmp)
return -ENOMEM;
error = wait_event_interruptible(rtas_log_wait, rtas_log_size);
if (error)
goto out;
spin_lock(&rtas_log_lock);
offset = rtas_error_log_max * (rtas_log_start & LOG_NUMBER_MASK);
memcpy(tmp, &rtas_log_buf[offset], count);
rtas_log_start += 1;
rtas_log_size -= 1;
spin_unlock(&rtas_log_lock);
error = copy_to_user(buf, tmp, count) ? -EFAULT : count;
out:
kfree(tmp);
return error;
}
static unsigned int rtas_log_poll(struct file *file, poll_table * wait)
{
poll_wait(file, &rtas_log_wait, wait);
if (rtas_log_size)
return POLLIN | POLLRDNORM;
return 0;
}
struct file_operations proc_rtas_log_operations = {
.read = rtas_log_read,
.poll = rtas_log_poll,
.open = rtas_log_open,
.release = rtas_log_release,
};
#define RTAS_ERR KERN_ERR "RTAS: "
/* Extended error log header (12 bytes) */
struct exthdr {
unsigned int valid:1;
unsigned int unrecoverable:1;
unsigned int recoverable:1;
unsigned int unrecoverable_bypassed:1; /* i.e. degraded performance */
unsigned int predictive:1;
unsigned int newlog:1;
unsigned int bigendian:1; /* always 1 */
unsigned int /* reserved */:1;
unsigned int platform_specific:1; /* only in version 3+ */
unsigned int /* reserved */:3;
unsigned int platform_value:4; /* valid iff platform_specific */
unsigned int power_pc:1; /* always 1 */
unsigned int /* reserved */:2;
unsigned int addr_invalid:1; /* failing_address is invalid */
unsigned int format_type:4;
#define EXTLOG_FMT_CPU 1
#define EXTLOG_FMT_MEMORY 2
#define EXTLOG_FMT_IO 3
#define EXTLOG_FMT_POST 4
#define EXTLOG_FMT_ENV 5
#define EXTLOG_FMT_POW 6
#define EXTLOG_FMT_IBMDIAG 12
#define EXTLOG_FMT_IBMSP 13
/* This group is in version 3+ only */
unsigned int non_hardware:1; /* Firmware or software is suspect */
unsigned int hot_plug:1; /* Failing component may be hot plugged */
unsigned int group_failure:1; /* Group of components should be replaced */
unsigned int /* reserved */:1;
unsigned int residual:1; /* Residual error from previous boot (maybe a crash) */
unsigned int boot:1; /* Error during boot */
unsigned int config_change:1; /* Configuration changed since last boot */
unsigned int post:1; /* Error during POST */
unsigned int bcdtime:32; /* Time of error in BCD HHMMSS00 */
unsigned int bcddate:32; /* Time of error in BCD YYYYMMDD */
};
struct cpuhdr {
unsigned int internal:1;
unsigned int intcache:1;
unsigned int extcache_parity:1; /* or multi-bit ECC */
unsigned int extcache_ecc:1;
unsigned int sysbus_timeout:1;
unsigned int io_timeout:1;
unsigned int sysbus_parity:1;
unsigned int sysbus_protocol:1;
unsigned int cpuid:8;
unsigned int element:16;
unsigned int failing_address_hi:32;
unsigned int failing_address_lo:32;
/* These are version 4+ */
unsigned int try_reboot:1; /* 1 => fault may be fixed by reboot */
unsigned int /* reserved */:7;
/* 15 bytes reserved here */
};
struct memhdr {
unsigned int uncorrectable:1;
unsigned int ECC:1;
unsigned int threshold_exceeded:1;
unsigned int control_internal:1;
unsigned int bad_address:1;
unsigned int bad_data:1;
unsigned int bus:1;
unsigned int timeout:1;
unsigned int sysbus_parity:1;
unsigned int sysbus_timeout:1;
unsigned int sysbus_protocol:1;
unsigned int hostbridge_timeout:1;
unsigned int hostbridge_parity:1;
unsigned int reserved1:1;
unsigned int support:1;
unsigned int sysbus_internal:1;
unsigned int mem_controller_detected:8; /* who detected fault? */
unsigned int mem_controller_faulted:8; /* who caused fault? */
unsigned int failing_address_hi:32;
unsigned int failing_address_lo:32;
unsigned int ecc_syndrome:16;
unsigned int memory_card:8;
unsigned int reserved2:8;
unsigned int sub_elements:32; /* one bit per element */
unsigned int element:16;
};
struct iohdr {
unsigned int bus_addr_parity:1;
unsigned int bus_data_parity:1;
unsigned int bus_timeout:1;
unsigned int bridge_internal:1;
unsigned int non_pci:1; /* i.e. secondary bus such as ISA */
unsigned int mezzanine_addr_parity:1;
unsigned int mezzanine_data_parity:1;
unsigned int mezzanine_timeout:1;
unsigned int bridge_via_sysbus:1;
unsigned int bridge_via_mezzanine:1;
unsigned int bridge_via_expbus:1;
unsigned int detected_by_expbus:1;
unsigned int expbus_data_parity:1;
unsigned int expbus_timeout:1;
unsigned int expbus_connection_failure:1;
unsigned int expbus_not_operating:1;
/* IOA signalling the error */
unsigned int pci_sig_busno:8;
unsigned int pci_sig_devfn:8;
unsigned int pci_sig_deviceid:16;
unsigned int pci_sig_vendorid:16;
unsigned int pci_sig_revisionid:8;
unsigned int pci_sig_slot:8; /* 00 => system board, ff => multiple */
/* IOA sending at time of error */
unsigned int pci_send_busno:8;
unsigned int pci_send_devfn:8;
unsigned int pci_send_deviceid:16;
unsigned int pci_send_vendorid:16;
unsigned int pci_send_revisionid:8;
unsigned int pci_send_slot:8; /* 00 => system board, ff => multiple */
};
struct posthdr {
unsigned int firmware:1;
unsigned int config:1;
unsigned int cpu:1;
unsigned int memory:1;
unsigned int io:1;
unsigned int keyboard:1;
unsigned int mouse:1;
unsigned int display:1;
unsigned int ipl_floppy:1;
unsigned int ipl_controller:1;
unsigned int ipl_cdrom:1;
unsigned int ipl_disk:1;
unsigned int ipl_net:1;
unsigned int ipl_other:1;
unsigned int /* reserved */:1;
unsigned int firmware_selftest:1;
char devname[12];
unsigned int post_code:4;
unsigned int firmware_rev:2;
unsigned int loc_code:8; /* currently unused */
};
struct epowhdr {
unsigned int epow_sensor_value:32;
unsigned int sensor:1;
unsigned int power_fault:1;
unsigned int fan:1;
unsigned int temp:1;
unsigned int redundancy:1;
unsigned int CUoD:1;
unsigned int /* reserved */:2;
unsigned int general:1;
unsigned int power_loss:1;
unsigned int power_supply:1;
unsigned int power_switch:1;
unsigned int /* reserved */:4;
unsigned int /* reserved */:16;
unsigned int sensor_token:32;
unsigned int sensor_index:32;
unsigned int sensor_value:32;
unsigned int sensor_status:32;
};
struct pm_eventhdr {
unsigned int event_id:32;
};
struct sphdr {
unsigned int ibm:32; /* "IBM\0" */
unsigned int timeout:1;
unsigned int i2c_bus:1;
unsigned int i2c_secondary_bus:1;
unsigned int sp_memory:1;
unsigned int sp_registers:1;
unsigned int sp_communication:1;
unsigned int sp_firmware:1;
unsigned int sp_hardware:1;
unsigned int vpd_eeprom:1;
unsigned int op_panel:1;
unsigned int power_controller:1;
unsigned int fan_sensor:1;
unsigned int thermal_sensor:1;
unsigned int voltage_sensor:1;
unsigned int reserved1:2;
unsigned int serial_port:1;
unsigned int nvram:1;
unsigned int rtc:1;
unsigned int jtag:1;
unsigned int tod_battery:1;
unsigned int reserved2:1;
unsigned int heartbeat:1;
unsigned int surveillance:1;
unsigned int pcn_connection:1; /* power control network */
unsigned int pcn_node:1;
unsigned int reserved3:2;
unsigned int pcn_access:1;
unsigned int reserved:3;
unsigned int sensor_token:32; /* zero if undef */
unsigned int sensor_index:32; /* zero if undef */
};
static char *severity_names[] = {
"NO ERROR", "EVENT", "WARNING", "ERROR_SYNC", "ERROR", "FATAL", "(6)", "(7)"
};
static char *rtas_disposition_names[] = {
"FULLY RECOVERED", "LIMITED RECOVERY", "NOT RECOVERED", "(4)"
};
static char *entity_names[] = { /* for initiator & targets */
"UNKNOWN", "CPU", "PCI", "ISA", "MEMORY", "POWER MANAGEMENT", "HOT PLUG", "(7)", "(8)",
"(9)", "(10)", "(11)", "(12)", "(13)", "(14)", "(15)"
};
static char *error_type[] = { /* Not all types covered here so need to bounds check */
"UNKNOWN", "RETRY", "TCE_ERR", "INTERN_DEV_FAIL",
"TIMEOUT", "DATA_PARITY", "ADDR_PARITY", "CACHE_PARITY",
"ADDR_INVALID", "ECC_UNCORR", "ECC_CORR",
};
static char *rtas_error_type(int type)
{
if (type < 11)
return error_type[type];
if (type == 64)
return "SENSOR";
if (type >=96 && type <= 159)
return "POWER";
return error_type[0];
}
static void printk_cpu_failure(int version, struct exthdr *exthdr, char *data)
{
struct cpuhdr cpuhdr;
memcpy(&cpuhdr, data, sizeof(cpuhdr));
if (cpuhdr.internal) printk(RTAS_ERR "Internal error (not cache)\n");
if (cpuhdr.intcache) printk(RTAS_ERR "Internal cache\n");
if (cpuhdr.extcache_parity) printk(RTAS_ERR "External cache parity (or multi-bit)\n");
if (cpuhdr.extcache_ecc) printk(RTAS_ERR "External cache ECC\n");
if (cpuhdr.sysbus_timeout) printk(RTAS_ERR "System bus timeout\n");
if (cpuhdr.io_timeout) printk(RTAS_ERR "I/O timeout\n");
if (cpuhdr.sysbus_parity) printk(RTAS_ERR "System bus parity\n");
if (cpuhdr.sysbus_protocol) printk(RTAS_ERR "System bus protocol/transfer\n");
printk(RTAS_ERR "CPU id: %d\n", cpuhdr.cpuid);
printk(RTAS_ERR "Failing element: 0x%04x\n", cpuhdr.element);
if (!exthdr->addr_invalid)
printk(RTAS_ERR "Failing address: %08x%08x\n", cpuhdr.failing_address_hi, cpuhdr.failing_address_lo);
if (version >= 4 && cpuhdr.try_reboot)
printk(RTAS_ERR "A reboot of the system may correct the problem\n");
}
static void printk_mem_failure(int version, struct exthdr *exthdr, char *data)
{
struct memhdr memhdr;
memcpy(&memhdr, data, sizeof(memhdr));
if (memhdr.uncorrectable) printk(RTAS_ERR "Uncorrectable Memory error\n");
if (memhdr.ECC) printk(RTAS_ERR "ECC Correctable error\n");
if (memhdr.threshold_exceeded) printk(RTAS_ERR "Correctable threshold exceeded\n");
if (memhdr.control_internal) printk(RTAS_ERR "Memory Controller internal error\n");
if (memhdr.bad_address) printk(RTAS_ERR "Memory Address error\n");
if (memhdr.bad_data) printk(RTAS_ERR "Memory Data error\n");
if (memhdr.bus) printk(RTAS_ERR "Memory bus/switch internal error\n");
if (memhdr.timeout) printk(RTAS_ERR "Memory timeout\n");
if (memhdr.sysbus_parity) printk(RTAS_ERR "System bus parity\n");
if (memhdr.sysbus_timeout) printk(RTAS_ERR "System bus timeout\n");
if (memhdr.sysbus_protocol) printk(RTAS_ERR "System bus protocol/transfer\n");
if (memhdr.hostbridge_timeout) printk(RTAS_ERR "I/O Host Bridge timeout\n");
if (memhdr.hostbridge_parity) printk(RTAS_ERR "I/O Host Bridge parity\n");
if (memhdr.support) printk(RTAS_ERR "System support function error\n");
if (memhdr.sysbus_internal) printk(RTAS_ERR "System bus internal hardware/switch error\n");
printk(RTAS_ERR "Memory Controller that detected failure: %d\n", memhdr.mem_controller_detected);
printk(RTAS_ERR "Memory Controller that faulted: %d\n", memhdr.mem_controller_faulted);
if (!exthdr->addr_invalid)
printk(RTAS_ERR "Failing address: 0x%016x%016x\n", memhdr.failing_address_hi, memhdr.failing_address_lo);
printk(RTAS_ERR "ECC syndrome bits: 0x%04x\n", memhdr.ecc_syndrome);
printk(RTAS_ERR "Memory Card: %d\n", memhdr.memory_card);
printk(RTAS_ERR "Failing element: 0x%04x\n", memhdr.element);
printk(RTAS_ERR "Sub element bits: 0x%08x\n", memhdr.sub_elements);
}
static void printk_io_failure(int version, struct exthdr *exthdr, char *data)
{
struct iohdr iohdr;
memcpy(&iohdr, data, sizeof(iohdr));
if (iohdr.bus_addr_parity) printk(RTAS_ERR "I/O bus address parity\n");
if (iohdr.bus_data_parity) printk(RTAS_ERR "I/O bus data parity\n");
if (iohdr.bus_timeout) printk(RTAS_ERR "I/O bus timeout, access or other\n");
if (iohdr.bridge_internal) printk(RTAS_ERR "I/O bus bridge/device internal\n");
if (iohdr.non_pci) printk(RTAS_ERR "Signaling IOA is a PCI to non-PCI bridge (e.g. ISA)\n");
if (iohdr.mezzanine_addr_parity) printk(RTAS_ERR "Mezzanine/System bus address parity\n");
if (iohdr.mezzanine_data_parity) printk(RTAS_ERR "Mezzanine/System bus data parity\n");
if (iohdr.mezzanine_timeout) printk(RTAS_ERR "Mezzanine/System bus timeout, transfer or protocol\n");
if (iohdr.bridge_via_sysbus) printk(RTAS_ERR "Bridge is connected to system bus\n");
if (iohdr.bridge_via_mezzanine) printk(RTAS_ERR "Bridge is connected to memory controller via mezzanine bus\n");
if (iohdr.bridge_via_expbus) printk(RTAS_ERR "Bridge is connected to I/O expansion bus\n");
if (iohdr.detected_by_expbus) printk(RTAS_ERR "Error on system bus detected by I/O expansion bus controller\n");
if (iohdr.expbus_data_parity) printk(RTAS_ERR "I/O expansion bus data error\n");
if (iohdr.expbus_timeout) printk(RTAS_ERR "I/O expansion bus timeout, access or other\n");
if (iohdr.expbus_connection_failure) printk(RTAS_ERR "I/O expansion bus connection failure\n");
if (iohdr.expbus_not_operating) printk(RTAS_ERR "I/O expansion unit not in an operating state (powered off, off-line)\n");
printk(RTAS_ERR "IOA Signaling the error: %d:%d.%d vendor:%04x device:%04x rev:%02x slot:%d\n",
iohdr.pci_sig_busno, iohdr.pci_sig_devfn >> 3, iohdr.pci_sig_devfn & 0x7,
iohdr.pci_sig_vendorid, iohdr.pci_sig_deviceid, iohdr.pci_sig_revisionid, iohdr.pci_sig_slot);
printk(RTAS_ERR "IOA Sending during the error: %d:%d.%d vendor:%04x device:%04x rev:%02x slot:%d\n",
iohdr.pci_send_busno, iohdr.pci_send_devfn >> 3, iohdr.pci_send_devfn & 0x7,
iohdr.pci_send_vendorid, iohdr.pci_send_deviceid, iohdr.pci_send_revisionid, iohdr.pci_send_slot);
}
static void printk_post_failure(int version, struct exthdr *exthdr, char *data)
{
struct posthdr posthdr;
memcpy(&posthdr, data, sizeof(posthdr));
if (posthdr.devname[0]) printk(RTAS_ERR "Failing Device: %s\n", posthdr.devname);
if (posthdr.firmware) printk(RTAS_ERR "Firmware Error\n");
if (posthdr.config) printk(RTAS_ERR "Configuration Error\n");
if (posthdr.cpu) printk(RTAS_ERR "CPU POST Error\n");
if (posthdr.memory) printk(RTAS_ERR "Memory POST Error\n");
if (posthdr.io) printk(RTAS_ERR "I/O Subsystem POST Error\n");
if (posthdr.keyboard) printk(RTAS_ERR "Keyboard POST Error\n");
if (posthdr.mouse) printk(RTAS_ERR "Mouse POST Error\n");
if (posthdr.display) printk(RTAS_ERR "Display POST Error\n");
if (posthdr.ipl_floppy) printk(RTAS_ERR "Floppy IPL Error\n");
if (posthdr.ipl_controller) printk(RTAS_ERR "Drive Controller Error during IPL\n");
if (posthdr.ipl_cdrom) printk(RTAS_ERR "CDROM IPL Error\n");
if (posthdr.ipl_disk) printk(RTAS_ERR "Disk IPL Error\n");
if (posthdr.ipl_net) printk(RTAS_ERR "Network IPL Error\n");
if (posthdr.ipl_other) printk(RTAS_ERR "Other (tape,flash) IPL Error\n");
if (posthdr.firmware_selftest) printk(RTAS_ERR "Self-test error in firmware extended diagnostics\n");
printk(RTAS_ERR "POST Code: %d\n", posthdr.post_code);
printk(RTAS_ERR "Firmware Revision Code: %d\n", posthdr.firmware_rev);
}
static void printk_epow_warning(int version, struct exthdr *exthdr, char *data)
{
struct epowhdr epowhdr;
memcpy(&epowhdr, data, sizeof(epowhdr));
printk(RTAS_ERR "EPOW Sensor Value: 0x%08x\n", epowhdr.epow_sensor_value);
if (epowhdr.sensor) {
printk(RTAS_ERR "EPOW detected by a sensor\n");
printk(RTAS_ERR "Sensor Token: 0x%08x\n", epowhdr.sensor_token);
printk(RTAS_ERR "Sensor Index: 0x%08x\n", epowhdr.sensor_index);
printk(RTAS_ERR "Sensor Value: 0x%08x\n", epowhdr.sensor_value);
printk(RTAS_ERR "Sensor Status: 0x%08x\n", epowhdr.sensor_status);
}
if (epowhdr.power_fault) printk(RTAS_ERR "EPOW caused by a power fault\n");
if (epowhdr.fan) printk(RTAS_ERR "EPOW caused by fan failure\n");
if (epowhdr.temp) printk(RTAS_ERR "EPOW caused by over-temperature condition\n");
if (epowhdr.redundancy) printk(RTAS_ERR "EPOW warning due to loss of redundancy\n");
if (epowhdr.CUoD) printk(RTAS_ERR "EPOW warning due to CUoD Entitlement Exceeded\n");
if (epowhdr.general) printk(RTAS_ERR "EPOW general power fault\n");
if (epowhdr.power_loss) printk(RTAS_ERR "EPOW power fault due to loss of power source\n");
if (epowhdr.power_supply) printk(RTAS_ERR "EPOW power fault due to internal power supply failure\n");
if (epowhdr.power_switch) printk(RTAS_ERR "EPOW power fault due to activation of power switch\n");
}
static void printk_pm_event(int version, struct exthdr *exthdr, char *data)
{
struct pm_eventhdr pm_eventhdr;
memcpy(&pm_eventhdr, data, sizeof(pm_eventhdr));
printk(RTAS_ERR "Event id: 0x%08x\n", pm_eventhdr.event_id);
}
static void printk_sp_log_msg(int version, struct exthdr *exthdr, char *data)
{
struct sphdr sphdr;
u32 eyecatcher;
memcpy(&sphdr, data, sizeof(sphdr));
eyecatcher = sphdr.ibm;
if (strcmp((char *)&eyecatcher, "IBM") != 0)
printk(RTAS_ERR "This log entry may be corrupt (IBM signature malformed)\n");
if (sphdr.timeout) printk(RTAS_ERR "Timeout on communication response from service processor\n");
if (sphdr.i2c_bus) printk(RTAS_ERR "I2C general bus error\n");
if (sphdr.i2c_secondary_bus) printk(RTAS_ERR "I2C secondary bus error\n");
if (sphdr.sp_memory) printk(RTAS_ERR "Internal service processor memory error\n");
if (sphdr.sp_registers) printk(RTAS_ERR "Service processor error accessing special registers\n");
if (sphdr.sp_communication) printk(RTAS_ERR "Service processor reports unknown communcation error\n");
if (sphdr.sp_firmware) printk(RTAS_ERR "Internal service processor firmware error\n");
if (sphdr.sp_hardware) printk(RTAS_ERR "Other internal service processor hardware error\n");
if (sphdr.vpd_eeprom) printk(RTAS_ERR "Service processor error accessing VPD EEPROM\n");
if (sphdr.op_panel) printk(RTAS_ERR "Service processor error accessing Operator Panel\n");
if (sphdr.power_controller) printk(RTAS_ERR "Service processor error accessing Power Controller\n");
if (sphdr.fan_sensor) printk(RTAS_ERR "Service processor error accessing Fan Sensor\n");
if (sphdr.thermal_sensor) printk(RTAS_ERR "Service processor error accessing Thermal Sensor\n");
if (sphdr.voltage_sensor) printk(RTAS_ERR "Service processor error accessing Voltage Sensor\n");
if (sphdr.serial_port) printk(RTAS_ERR "Service processor error accessing serial port\n");
if (sphdr.nvram) printk(RTAS_ERR "Service processor detected NVRAM error\n");
if (sphdr.rtc) printk(RTAS_ERR "Service processor error accessing real time clock\n");
if (sphdr.jtag) printk(RTAS_ERR "Service processor error accessing JTAG/COP\n");
if (sphdr.tod_battery) printk(RTAS_ERR "Service processor or RTAS detects loss of voltage from TOD battery\n");
if (sphdr.heartbeat) printk(RTAS_ERR "Loss of heartbeat from Service processor\n");
if (sphdr.surveillance) printk(RTAS_ERR "Service processor detected a surveillance timeout\n");
if (sphdr.pcn_connection) printk(RTAS_ERR "Power Control Network general connection failure\n");
if (sphdr.pcn_node) printk(RTAS_ERR "Power Control Network node failure\n");
if (sphdr.pcn_access) printk(RTAS_ERR "Service processor error accessing Power Control Network\n");
if (sphdr.sensor_token) printk(RTAS_ERR "Sensor Token 0x%08x (%d)\n", sphdr.sensor_token, sphdr.sensor_token);
if (sphdr.sensor_index) printk(RTAS_ERR "Sensor Index 0x%08x (%d)\n", sphdr.sensor_index, sphdr.sensor_index);
}
static void printk_ext_raw_data(char *data)
{
int i;
printk(RTAS_ERR "raw ext data: ");
for (i = 0; i < 40; i++) {
printk("%02x", data[i]);
}
printk("\n");
}
static void printk_ext_log_data(int version, char *buf)
{
char *data = buf+12;
struct exthdr exthdr;
memcpy(&exthdr, buf, sizeof(exthdr)); /* copy for alignment */
if (!exthdr.valid) {
if (exthdr.bigendian && exthdr.power_pc)
printk(RTAS_ERR "extended log data is not valid\n");
else
printk(RTAS_ERR "extended log data can not be decoded\n");
return;
}
/* Dump useful stuff in the exthdr */
printk(RTAS_ERR "Status:%s%s%s%s%s\n",
exthdr.unrecoverable ? " unrecoverable" : "",
exthdr.recoverable ? " recoverable" : "",
exthdr.unrecoverable_bypassed ? " bypassed" : "",
exthdr.predictive ? " predictive" : "",
exthdr.newlog ? " new" : "");
printk(RTAS_ERR "Date/Time: %08x %08x\n", exthdr.bcddate, exthdr.bcdtime);
switch (exthdr.format_type) {
case EXTLOG_FMT_CPU:
printk(RTAS_ERR "CPU Failure\n");
printk_cpu_failure(version, &exthdr, data);
break;
case EXTLOG_FMT_MEMORY:
printk(RTAS_ERR "Memory Failure\n");
printk_mem_failure(version, &exthdr, data);
break;
case EXTLOG_FMT_IO:
printk(RTAS_ERR "I/O Failure\n");
printk_io_failure(version, &exthdr, data);
break;
case EXTLOG_FMT_POST:
printk(RTAS_ERR "POST Failure\n");
printk_post_failure(version, &exthdr, data);
break;
case EXTLOG_FMT_ENV:
printk(RTAS_ERR "Environment and Power Warning\n");
printk_epow_warning(version, &exthdr, data);
break;
case EXTLOG_FMT_POW:
printk(RTAS_ERR "Power Management Event\n");
printk_pm_event(version, &exthdr, data);
break;
case EXTLOG_FMT_IBMDIAG:
printk(RTAS_ERR "IBM Diagnostic Log\n");
printk_ext_raw_data(data);
break;
case EXTLOG_FMT_IBMSP:
printk(RTAS_ERR "IBM Service Processor Log\n");
printk_sp_log_msg(version, &exthdr, data);
break;
default:
printk(RTAS_ERR "Unknown ext format type %d\n", exthdr.format_type);
printk_ext_raw_data(data);
break;
}
}
#define MAX_LOG_DEBUG 10
#define MAX_LOG_DEBUG_LEN 900
/* Print log debug data. This appears after the location code.
* We limit the number of debug logs in case the data is somehow corrupt.
*/
static void printk_log_debug(char *buf)
{
unsigned char *p = (unsigned char *)_ALIGN((unsigned long)buf, 4);
int len, n, logged;
logged = 0;
while ((logged < MAX_LOG_DEBUG) && (len = ((p[0] << 8) | p[1])) >= 4) {
if (len > MAX_LOG_DEBUG_LEN)
len = MAX_LOG_DEBUG_LEN; /* bound it */
printk("RTAS: Log Debug: %c%c ", p[2], p[3]);
for (n=4; n < len; n++)
printk("%02x", p[n]);
printk("\n");
p = (unsigned char *)_ALIGN((unsigned long)p+len, 4);
logged++;
if (len == MAX_LOG_DEBUG_LEN)
return; /* no point continuing */
}
if (logged == 0)
printk("RTAS: no log debug data present\n");
}
/* Yeah, the output here is ugly, but we want a CE to be
* able to grep RTAS /var/log/messages and see all the info
* collected together with obvious begin/end.
*/
static void printk_log_rtas(char *buf)
{
struct rtas_error_log *err = (struct rtas_error_log *)buf;
printk(RTAS_ERR "-------- event-scan begin --------\n");
if (strcmp(buf+8+40, "IBM") == 0) {
/* Location code follows */
char *loc = buf+8+40+4;
int len = strlen(loc);
if (len < 64) { /* Sanity check */
printk(RTAS_ERR "Location Code: %s\n", loc);
printk_log_debug(loc+len+1);
}
}
printk(RTAS_ERR "%s: (%s) type: %s\n",
severity_names[err->severity],
rtas_disposition_names[err->disposition],
rtas_error_type(err->type));
printk(RTAS_ERR "initiator: %s target: %s\n",
entity_names[err->initiator], entity_names[err->target]);
if (err->extended_log_length)
printk_ext_log_data(err->version, buf+8);
printk(RTAS_ERR "-------- event-scan end ----------\n");
}
static void log_rtas(char *buf)
{
unsigned long offset;
DEBUG("logging rtas event\n");
/* Temporary -- perhaps we can do this when nobody has the log open? */
printk_log_rtas(buf);
spin_lock(&rtas_log_lock);
offset = rtas_error_log_max *
((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK);
memcpy(&rtas_log_buf[offset], buf, rtas_error_log_max);
if (rtas_log_size < LOG_NUMBER)
rtas_log_size += 1;
else
rtas_log_start += 1;
spin_unlock(&rtas_log_lock);
wake_up_interruptible(&rtas_log_wait);
}
static int enable_surveillance(void)
{
int error;
error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL, SURVEILLANCE_TOKEN,
0, SURVEILLANCE_TIMEOUT);
if (error) {
printk(KERN_ERR "rtasd: could not enable surveillance\n");
return -1;
}
rtas_event_scan_rate = SURVEILLANCE_SCANRATE;
return 0;
}
static int get_eventscan_parms(void)
{
struct device_node *node;
int *ip;
node = find_path_device("/rtas");
ip = (int *)get_property(node, "rtas-event-scan-rate", NULL);
if (ip == NULL) {
printk(KERN_ERR "rtasd: no rtas-event-scan-rate\n");
return -1;
}
rtas_event_scan_rate = *ip;
DEBUG("rtas-event-scan-rate %d\n", rtas_event_scan_rate);
ip = (int *)get_property(node, "rtas-error-log-max", NULL);
if (ip == NULL) {
printk(KERN_ERR "rtasd: no rtas-error-log-max\n");
return -1;
}
rtas_error_log_max = *ip;
DEBUG("rtas-error-log-max %d\n", rtas_error_log_max);
if (rtas_error_log_max > RTAS_ERROR_LOG_MAX) {
printk(KERN_ERR "rtasd: truncated error log from %d to %d bytes\n", rtas_error_log_max, RTAS_ERROR_LOG_MAX);
rtas_error_log_max = RTAS_ERROR_LOG_MAX;
}
return 0;
}
extern long sys_sched_get_priority_max(int policy);
static int rtasd(void *unused)
{
int cpu = 0;
int error;
int first_pass = 1;
int event_scan = rtas_token("event-scan");
if (event_scan == RTAS_UNKNOWN_SERVICE || get_eventscan_parms() == -1)
goto error;
rtas_log_buf = vmalloc(rtas_error_log_max*LOG_NUMBER);
if (!rtas_log_buf) {
printk(KERN_ERR "rtasd: no memory\n");
goto error;
}
DEBUG("will sleep for %d jiffies\n", (HZ*60/rtas_event_scan_rate) / 2);
daemonize();
sigfillset(¤t->blocked);
sprintf(current->comm, "rtasd");
/* Rusty unreal time task */
current->policy = SCHED_FIFO;
current->nice = sys_sched_get_priority_max(SCHED_FIFO) + 1;
cpu = 0;
current->cpus_allowed = 1UL << cpu_logical_map(cpu);
schedule();
while(1) {
do {
memset(logdata, 0, rtas_error_log_max);
error = rtas_call(event_scan, 4, 1, NULL,
EVENT_SCAN_ALL_EVENTS, 0,
__pa(logdata), rtas_error_log_max);
if (error == -1) {
printk(KERN_ERR "event-scan failed\n");
break;
}
if (error == 0)
log_rtas(logdata);
} while(error == 0);
DEBUG("watchdog scheduled on cpu %d\n", smp_processor_id());
cpu++;
if (cpu >= smp_num_cpus) {
if (first_pass && surveillance_requested) {
DEBUG("enabling surveillance\n");
if (enable_surveillance())
goto error_vfree;
DEBUG("surveillance enabled\n");
}
first_pass = 0;
cpu = 0;
}
current->cpus_allowed = 1UL << cpu_logical_map(cpu);
/* Check all cpus for pending events before sleeping*/
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(first_pass ? HZ : (HZ*60/rtas_event_scan_rate) / 2);
}
error_vfree:
vfree(rtas_log_buf);
error:
/* Should delete proc entries */
return -EINVAL;
}
static int __init rtas_init(void)
{
int ret = 0;
struct proc_dir_entry *entry;
spin_lock(&proc_ppc64_lock);
if (proc_ppc64_root == NULL) {
proc_ppc64_root = proc_mkdir("ppc64", 0);
if (!proc_ppc64_root) {
spin_unlock(&proc_ppc64_lock);
return -EINVAL;
}
}
spin_unlock(&proc_ppc64_lock);
if (rtas_proc_dir == NULL) {
rtas_proc_dir = proc_mkdir("rtas", proc_ppc64_root);
}
if (rtas_proc_dir == NULL) {
printk(KERN_ERR "Failed to create /proc/ppc64/rtas in rtas_init\n");
ret = -EINVAL;
} else {
entry = create_proc_entry("error_log", S_IRUSR, rtas_proc_dir);
if (entry)
entry->proc_fops = &proc_rtas_log_operations;
else {
printk(KERN_ERR "Failed to create rtas/error_log proc entry\n");
ret = -EINVAL;
}
}
if (kernel_thread(rtasd, 0, CLONE_FS) < 0) {
printk(KERN_ERR "Failed to start RTAS daemon\n");
ret = -EINVAL;
}
printk(KERN_ERR "RTAS daemon started\n");
return ret;
}
static int __init surveillance_setup(char *str)
{
int i;
if (get_option(&str,&i)) {
if (i == 1)
surveillance_requested = 1;
}
return 1;
}
__initcall(rtas_init);
__setup("surveillance=", surveillance_setup);
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