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authorMichael Ellerman <michael@ellerman.id.au>2005-11-04 12:12:52 +1100
committerMichael Ellerman <michael@ellerman.id.au>2005-11-04 12:12:52 +1100
commitdc3a9efb5ee89493a42c3365d219e339e4720c2b (patch)
treea0d261c2933f3083f351c858b01de7677356d4b7 /arch/powerpc/kernel
parent30415f6a63f3383a18e9adf7c144acabe6893f63 (diff)
parentd3ab57ebdc6457543b346255fa47b0ecd7671136 (diff)
Merge with Paulus
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/Makefile5
-rw-r--r--arch/powerpc/kernel/ppc32.h138
-rw-r--r--arch/powerpc/kernel/rtas-proc.c808
-rw-r--r--arch/powerpc/kernel/rtas.c19
-rw-r--r--arch/powerpc/kernel/rtas_flash.c834
-rw-r--r--arch/powerpc/kernel/rtas_fw.c136
-rw-r--r--arch/powerpc/kernel/signal_32.c2
-rw-r--r--arch/powerpc/kernel/signal_64.c581
8 files changed, 2383 insertions, 140 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index abad3059a21..7a3e1155ac9 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -13,12 +13,13 @@ endif
obj-y := semaphore.o cputable.o ptrace.o syscalls.o \
signal_32.o pmc.o
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
- ptrace32.o systbl.o
+ signal_64.o ptrace32.o systbl.o
obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o
obj-$(CONFIG_POWER4) += idle_power4.o
obj-$(CONFIG_PPC_OF) += of_device.o
obj-$(CONFIG_PPC_RTAS) += rtas.o
-obj-$(CONFIG_RTAS_FW) += rtas_fw.o
+obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o
+obj-$(CONFIG_RTAS_PROC) += rtas-proc.o
obj-$(CONFIG_IBMVIO) += vio.o
ifeq ($(CONFIG_PPC_MERGE),y)
diff --git a/arch/powerpc/kernel/ppc32.h b/arch/powerpc/kernel/ppc32.h
new file mode 100644
index 00000000000..90e56277179
--- /dev/null
+++ b/arch/powerpc/kernel/ppc32.h
@@ -0,0 +1,138 @@
+#ifndef _PPC64_PPC32_H
+#define _PPC64_PPC32_H
+
+#include <linux/compat.h>
+#include <asm/siginfo.h>
+#include <asm/signal.h>
+
+/*
+ * Data types and macros for providing 32b PowerPC support.
+ *
+ * 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.
+ */
+
+/* These are here to support 32-bit syscalls on a 64-bit kernel. */
+
+typedef struct compat_siginfo {
+ int si_signo;
+ int si_errno;
+ int si_code;
+
+ union {
+ int _pad[SI_PAD_SIZE32];
+
+ /* kill() */
+ struct {
+ compat_pid_t _pid; /* sender's pid */
+ compat_uid_t _uid; /* sender's uid */
+ } _kill;
+
+ /* POSIX.1b timers */
+ struct {
+ compat_timer_t _tid; /* timer id */
+ int _overrun; /* overrun count */
+ compat_sigval_t _sigval; /* same as below */
+ int _sys_private; /* not to be passed to user */
+ } _timer;
+
+ /* POSIX.1b signals */
+ struct {
+ compat_pid_t _pid; /* sender's pid */
+ compat_uid_t _uid; /* sender's uid */
+ compat_sigval_t _sigval;
+ } _rt;
+
+ /* SIGCHLD */
+ struct {
+ compat_pid_t _pid; /* which child */
+ compat_uid_t _uid; /* sender's uid */
+ int _status; /* exit code */
+ compat_clock_t _utime;
+ compat_clock_t _stime;
+ } _sigchld;
+
+ /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
+ struct {
+ unsigned int _addr; /* faulting insn/memory ref. */
+ } _sigfault;
+
+ /* SIGPOLL */
+ struct {
+ int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
+ int _fd;
+ } _sigpoll;
+ } _sifields;
+} compat_siginfo_t;
+
+#define __old_sigaction32 old_sigaction32
+
+struct __old_sigaction32 {
+ compat_uptr_t sa_handler;
+ compat_old_sigset_t sa_mask;
+ unsigned int sa_flags;
+ compat_uptr_t sa_restorer; /* not used by Linux/SPARC yet */
+};
+
+
+
+struct sigaction32 {
+ compat_uptr_t sa_handler; /* Really a pointer, but need to deal with 32 bits */
+ unsigned int sa_flags;
+ compat_uptr_t sa_restorer; /* Another 32 bit pointer */
+ compat_sigset_t sa_mask; /* A 32 bit mask */
+};
+
+typedef struct sigaltstack_32 {
+ unsigned int ss_sp;
+ int ss_flags;
+ compat_size_t ss_size;
+} stack_32_t;
+
+struct pt_regs32 {
+ unsigned int gpr[32];
+ unsigned int nip;
+ unsigned int msr;
+ unsigned int orig_gpr3; /* Used for restarting system calls */
+ unsigned int ctr;
+ unsigned int link;
+ unsigned int xer;
+ unsigned int ccr;
+ unsigned int mq; /* 601 only (not used at present) */
+ unsigned int trap; /* Reason for being here */
+ unsigned int dar; /* Fault registers */
+ unsigned int dsisr;
+ unsigned int result; /* Result of a system call */
+};
+
+struct sigcontext32 {
+ unsigned int _unused[4];
+ int signal;
+ compat_uptr_t handler;
+ unsigned int oldmask;
+ compat_uptr_t regs; /* 4 byte pointer to the pt_regs32 structure. */
+};
+
+struct mcontext32 {
+ elf_gregset_t32 mc_gregs;
+ elf_fpregset_t mc_fregs;
+ unsigned int mc_pad[2];
+ elf_vrregset_t32 mc_vregs __attribute__((__aligned__(16)));
+};
+
+struct ucontext32 {
+ unsigned int uc_flags;
+ unsigned int uc_link;
+ stack_32_t uc_stack;
+ int uc_pad[7];
+ compat_uptr_t uc_regs; /* points to uc_mcontext field */
+ compat_sigset_t uc_sigmask; /* mask last for extensibility */
+ /* glibc has 1024-bit signal masks, ours are 64-bit */
+ int uc_maskext[30];
+ int uc_pad2[3];
+ struct mcontext32 uc_mcontext;
+};
+
+#endif /* _PPC64_PPC32_H */
diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c
new file mode 100644
index 00000000000..5bdd5b079d9
--- /dev/null
+++ b/arch/powerpc/kernel/rtas-proc.c
@@ -0,0 +1,808 @@
+/*
+ * arch/ppc64/kernel/rtas-proc.c
+ * Copyright (C) 2000 Tilmann Bitterberg
+ * (tilmann@bitterberg.de)
+ *
+ * RTAS (Runtime Abstraction Services) stuff
+ * Intention is to provide a clean user interface
+ * to use the RTAS.
+ *
+ * TODO:
+ * Split off a header file and maybe move it to a different
+ * location. Write Documentation on what the /proc/rtas/ entries
+ * actually do.
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <linux/time.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/seq_file.h>
+#include <linux/bitops.h>
+#include <linux/rtc.h>
+
+#include <asm/uaccess.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/rtas.h>
+#include <asm/machdep.h> /* for ppc_md */
+#include <asm/time.h>
+#include <asm/systemcfg.h>
+
+/* Token for Sensors */
+#define KEY_SWITCH 0x0001
+#define ENCLOSURE_SWITCH 0x0002
+#define THERMAL_SENSOR 0x0003
+#define LID_STATUS 0x0004
+#define POWER_SOURCE 0x0005
+#define BATTERY_VOLTAGE 0x0006
+#define BATTERY_REMAINING 0x0007
+#define BATTERY_PERCENTAGE 0x0008
+#define EPOW_SENSOR 0x0009
+#define BATTERY_CYCLESTATE 0x000a
+#define BATTERY_CHARGING 0x000b
+
+/* IBM specific sensors */
+#define IBM_SURVEILLANCE 0x2328 /* 9000 */
+#define IBM_FANRPM 0x2329 /* 9001 */
+#define IBM_VOLTAGE 0x232a /* 9002 */
+#define IBM_DRCONNECTOR 0x232b /* 9003 */
+#define IBM_POWERSUPPLY 0x232c /* 9004 */
+
+/* Status return values */
+#define SENSOR_CRITICAL_HIGH 13
+#define SENSOR_WARNING_HIGH 12
+#define SENSOR_NORMAL 11
+#define SENSOR_WARNING_LOW 10
+#define SENSOR_CRITICAL_LOW 9
+#define SENSOR_SUCCESS 0
+#define SENSOR_HW_ERROR -1
+#define SENSOR_BUSY -2
+#define SENSOR_NOT_EXIST -3
+#define SENSOR_DR_ENTITY -9000
+
+/* Location Codes */
+#define LOC_SCSI_DEV_ADDR 'A'
+#define LOC_SCSI_DEV_LOC 'B'
+#define LOC_CPU 'C'
+#define LOC_DISKETTE 'D'
+#define LOC_ETHERNET 'E'
+#define LOC_FAN 'F'
+#define LOC_GRAPHICS 'G'
+/* reserved / not used 'H' */
+#define LOC_IO_ADAPTER 'I'
+/* reserved / not used 'J' */
+#define LOC_KEYBOARD 'K'
+#define LOC_LCD 'L'
+#define LOC_MEMORY 'M'
+#define LOC_NV_MEMORY 'N'
+#define LOC_MOUSE 'O'
+#define LOC_PLANAR 'P'
+#define LOC_OTHER_IO 'Q'
+#define LOC_PARALLEL 'R'
+#define LOC_SERIAL 'S'
+#define LOC_DEAD_RING 'T'
+#define LOC_RACKMOUNTED 'U' /* for _u_nit is rack mounted */
+#define LOC_VOLTAGE 'V'
+#define LOC_SWITCH_ADAPTER 'W'
+#define LOC_OTHER 'X'
+#define LOC_FIRMWARE 'Y'
+#define LOC_SCSI 'Z'
+
+/* Tokens for indicators */
+#define TONE_FREQUENCY 0x0001 /* 0 - 1000 (HZ)*/
+#define TONE_VOLUME 0x0002 /* 0 - 100 (%) */
+#define SYSTEM_POWER_STATE 0x0003
+#define WARNING_LIGHT 0x0004
+#define DISK_ACTIVITY_LIGHT 0x0005
+#define HEX_DISPLAY_UNIT 0x0006
+#define BATTERY_WARNING_TIME 0x0007
+#define CONDITION_CYCLE_REQUEST 0x0008
+#define SURVEILLANCE_INDICATOR 0x2328 /* 9000 */
+#define DR_ACTION 0x2329 /* 9001 */
+#define DR_INDICATOR 0x232a /* 9002 */
+/* 9003 - 9004: Vendor specific */
+/* 9006 - 9999: Vendor specific */
+
+/* other */
+#define MAX_SENSORS 17 /* I only know of 17 sensors */
+#define MAX_LINELENGTH 256
+#define SENSOR_PREFIX "ibm,sensor-"
+#define cel_to_fahr(x) ((x*9/5)+32)
+
+
+/* Globals */
+static struct rtas_sensors sensors;
+static struct device_node *rtas_node = NULL;
+static unsigned long power_on_time = 0; /* Save the time the user set */
+static char progress_led[MAX_LINELENGTH];
+
+static unsigned long rtas_tone_frequency = 1000;
+static unsigned long rtas_tone_volume = 0;
+
+/* ****************STRUCTS******************************************* */
+struct individual_sensor {
+ unsigned int token;
+ unsigned int quant;
+};
+
+struct rtas_sensors {
+ struct individual_sensor sensor[MAX_SENSORS];
+ unsigned int quant;
+};
+
+/* ****************************************************************** */
+/* Declarations */
+static int ppc_rtas_sensors_show(struct seq_file *m, void *v);
+static int ppc_rtas_clock_show(struct seq_file *m, void *v);
+static ssize_t ppc_rtas_clock_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos);
+static int ppc_rtas_progress_show(struct seq_file *m, void *v);
+static ssize_t ppc_rtas_progress_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos);
+static int ppc_rtas_poweron_show(struct seq_file *m, void *v);
+static ssize_t ppc_rtas_poweron_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos);
+
+static ssize_t ppc_rtas_tone_freq_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos);
+static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v);
+static ssize_t ppc_rtas_tone_volume_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos);
+static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v);
+static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v);
+
+static int sensors_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_sensors_show, NULL);
+}
+
+struct file_operations ppc_rtas_sensors_operations = {
+ .open = sensors_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int poweron_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_poweron_show, NULL);
+}
+
+struct file_operations ppc_rtas_poweron_operations = {
+ .open = poweron_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = ppc_rtas_poweron_write,
+ .release = single_release,
+};
+
+static int progress_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_progress_show, NULL);
+}
+
+struct file_operations ppc_rtas_progress_operations = {
+ .open = progress_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = ppc_rtas_progress_write,
+ .release = single_release,
+};
+
+static int clock_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_clock_show, NULL);
+}
+
+struct file_operations ppc_rtas_clock_operations = {
+ .open = clock_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = ppc_rtas_clock_write,
+ .release = single_release,
+};
+
+static int tone_freq_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_tone_freq_show, NULL);
+}
+
+struct file_operations ppc_rtas_tone_freq_operations = {
+ .open = tone_freq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = ppc_rtas_tone_freq_write,
+ .release = single_release,
+};
+
+static int tone_volume_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_tone_volume_show, NULL);
+}
+
+struct file_operations ppc_rtas_tone_volume_operations = {
+ .open = tone_volume_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = ppc_rtas_tone_volume_write,
+ .release = single_release,
+};
+
+static int rmo_buf_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ppc_rtas_rmo_buf_show, NULL);
+}
+
+struct file_operations ppc_rtas_rmo_buf_ops = {
+ .open = rmo_buf_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int ppc_rtas_find_all_sensors(void);
+static void ppc_rtas_process_sensor(struct seq_file *m,
+ struct individual_sensor *s, int state, int error, char *loc);
+static char *ppc_rtas_process_error(int error);
+static void get_location_code(struct seq_file *m,
+ struct individual_sensor *s, char *loc);
+static void check_location_string(struct seq_file *m, char *c);
+static void check_location(struct seq_file *m, char *c);
+
+static int __init proc_rtas_init(void)
+{
+ struct proc_dir_entry *entry;
+
+ if (!(systemcfg->platform & PLATFORM_PSERIES))
+ return 1;
+
+ rtas_node = of_find_node_by_name(NULL, "rtas");
+ if (rtas_node == NULL)
+ return 1;
+
+ entry = create_proc_entry("ppc64/rtas/progress", S_IRUGO|S_IWUSR, NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_progress_operations;
+
+ entry = create_proc_entry("ppc64/rtas/clock", S_IRUGO|S_IWUSR, NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_clock_operations;
+
+ entry = create_proc_entry("ppc64/rtas/poweron", S_IWUSR|S_IRUGO, NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_poweron_operations;
+
+ entry = create_proc_entry("ppc64/rtas/sensors", S_IRUGO, NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_sensors_operations;
+
+ entry = create_proc_entry("ppc64/rtas/frequency", S_IWUSR|S_IRUGO,
+ NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_tone_freq_operations;
+
+ entry = create_proc_entry("ppc64/rtas/volume", S_IWUSR|S_IRUGO, NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_tone_volume_operations;
+
+ entry = create_proc_entry("ppc64/rtas/rmo_buffer", S_IRUSR, NULL);
+ if (entry)
+ entry->proc_fops = &ppc_rtas_rmo_buf_ops;
+
+ return 0;
+}
+
+__initcall(proc_rtas_init);
+
+static int parse_number(const char __user *p, size_t count, unsigned long *val)
+{
+ char buf[40];
+ char *end;
+
+ if (count > 39)
+ return -EINVAL;
+
+ if (copy_from_user(buf, p, count))
+ return -EFAULT;
+
+ buf[count] = 0;
+
+ *val = simple_strtoul(buf, &end, 10);
+ if (*end && *end != '\n')
+ return -EINVAL;
+
+ return 0;
+}
+
+/* ****************************************************************** */
+/* POWER-ON-TIME */
+/* ****************************************************************** */
+static ssize_t ppc_rtas_poweron_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos)
+{
+ struct rtc_time tm;
+ unsigned long nowtime;
+ int error = parse_number(buf, count, &nowtime);
+ if (error)
+ return error;
+
+ power_on_time = nowtime; /* save the time */
+
+ to_tm(nowtime, &tm);
+
+ error = rtas_call(rtas_token("set-time-for-power-on"), 7, 1, NULL,
+ tm.tm_year, tm.tm_mon, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */);
+ if (error)
+ printk(KERN_WARNING "error: setting poweron time returned: %s\n",
+ ppc_rtas_process_error(error));
+ return count;
+}
+/* ****************************************************************** */
+static int ppc_rtas_poweron_show(struct seq_file *m, void *v)
+{
+ if (power_on_time == 0)
+ seq_printf(m, "Power on time not set\n");
+ else
+ seq_printf(m, "%lu\n",power_on_time);
+ return 0;
+}
+
+/* ****************************************************************** */
+/* PROGRESS */
+/* ****************************************************************** */
+static ssize_t ppc_rtas_progress_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos)
+{
+ unsigned long hex;
+
+ if (count >= MAX_LINELENGTH)
+ count = MAX_LINELENGTH -1;
+ if (copy_from_user(progress_led, buf, count)) { /* save the string */
+ return -EFAULT;
+ }
+ progress_led[count] = 0;
+
+ /* Lets see if the user passed hexdigits */
+ hex = simple_strtoul(progress_led, NULL, 10);
+
+ rtas_progress ((char *)progress_led, hex);
+ return count;
+
+ /* clear the line */
+ /* rtas_progress(" ", 0xffff);*/
+}
+/* ****************************************************************** */
+static int ppc_rtas_progress_show(struct seq_file *m, void *v)
+{
+ if (progress_led)
+ seq_printf(m, "%s\n", progress_led);
+ return 0;
+}
+
+/* ****************************************************************** */
+/* CLOCK */
+/* ****************************************************************** */
+static ssize_t ppc_rtas_clock_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos)
+{
+ struct rtc_time tm;
+ unsigned long nowtime;
+ int error = parse_number(buf, count, &nowtime);
+ if (error)
+ return error;
+
+ to_tm(nowtime, &tm);
+ error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL,
+ tm.tm_year, tm.tm_mon, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec, 0);
+ if (error)
+ printk(KERN_WARNING "error: setting the clock returned: %s\n",
+ ppc_rtas_process_error(error));
+ return count;
+}
+/* ****************************************************************** */
+static int ppc_rtas_clock_show(struct seq_file *m, void *v)
+{
+ int ret[8];
+ int error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret);
+
+ if (error) {
+ printk(KERN_WARNING "error: reading the clock returned: %s\n",
+ ppc_rtas_process_error(error));
+ seq_printf(m, "0");
+ } else {
+ unsigned int year, mon, day, hour, min, sec;
+ year = ret[0]; mon = ret[1]; day = ret[2];
+ hour = ret[3]; min = ret[4]; sec = ret[5];
+ seq_printf(m, "%lu\n",
+ mktime(year, mon, day, hour, min, sec));
+ }
+ return 0;
+}
+
+/* ****************************************************************** */
+/* SENSOR STUFF */
+/* ****************************************************************** */
+static int ppc_rtas_sensors_show(struct seq_file *m, void *v)
+{
+ int i,j;
+ int state, error;
+ int get_sensor_state = rtas_token("get-sensor-state");
+
+ seq_printf(m, "RTAS (RunTime Abstraction Services) Sensor Information\n");
+ seq_printf(m, "Sensor\t\tValue\t\tCondition\tLocation\n");
+ seq_printf(m, "********************************************************\n");
+
+ if (ppc_rtas_find_all_sensors() != 0) {
+ seq_printf(m, "\nNo sensors are available\n");
+ return 0;
+ }
+
+ for (i=0; i<sensors.quant; i++) {
+ struct individual_sensor *p = &sensors.sensor[i];
+ char rstr[64];
+ char *loc;
+ int llen, offs;
+
+ sprintf (rstr, SENSOR_PREFIX"%04d", p->token);
+ loc = (char *) get_property(rtas_node, rstr, &llen);
+
+ /* A sensor may have multiple instances */
+ for (j = 0, offs = 0; j <= p->quant; j++) {
+ error = rtas_call(get_sensor_state, 2, 2, &state,
+ p->token, j);
+
+ ppc_rtas_process_sensor(m, p, state, error, loc);
+ seq_putc(m, '\n');
+ if (loc) {
+ offs += strlen(loc) + 1;
+ loc += strlen(loc) + 1;
+ if (offs >= llen)
+ loc = NULL;
+ }
+ }
+ }
+ return 0;
+}
+
+/* ****************************************************************** */
+
+static int ppc_rtas_find_all_sensors(void)
+{
+ unsigned int *utmp;
+ int len, i;
+
+ utmp = (unsigned int *) get_property(rtas_node, "rtas-sensors", &len);
+ if (utmp == NULL) {
+ printk (KERN_ERR "error: could not get rtas-sensors\n");
+ return 1;
+ }
+
+ sensors.quant = len / 8; /* int + int */
+
+ for (i=0; i<sensors.quant; i++) {
+ sensors.sensor[i].token = *utmp++;
+ sensors.sensor[i].quant = *utmp++;
+ }
+ return 0;
+}
+
+/* ****************************************************************** */
+/*
+ * Builds a string of what rtas returned
+ */
+static char *ppc_rtas_process_error(int error)
+{
+ switch (error) {
+ case SENSOR_CRITICAL_HIGH:
+ return "(critical high)";
+ case SENSOR_WARNING_HIGH:
+ return "(warning high)";
+ case SENSOR_NORMAL:
+ return "(normal)";
+ case SENSOR_WARNING_LOW:
+ return "(warning low)";
+ case SENSOR_CRITICAL_LOW:
+ return "(critical low)";
+ case SENSOR_SUCCESS:
+ return "(read ok)";
+ case SENSOR_HW_ERROR:
+ return "(hardware error)";
+ case SENSOR_BUSY:
+ return "(busy)";
+ case SENSOR_NOT_EXIST:
+ return "(non existent)";
+ case SENSOR_DR_ENTITY:
+ return "(dr entity removed)";
+ default:
+ return "(UNKNOWN)";
+ }
+}
+
+/* ****************************************************************** */
+/*
+ * Builds a string out of what the sensor said
+ */
+
+static void ppc_rtas_process_sensor(struct seq_file *m,
+ struct individual_sensor *s, int state, int error, char *loc)
+{
+ /* Defined return vales */
+ const char * key_switch[] = { "Off\t", "Normal\t", "Secure\t",
+ "Maintenance" };
+ const char * enclosure_switch[] = { "Closed", "Open" };
+ const char * lid_status[] = { " ", "Open", "Closed" };
+ const char * power_source[] = { "AC\t", "Battery",
+ "AC & Battery" };
+ const char * battery_remaining[] = { "Very Low", "Low", "Mid", "High" };
+ const char * epow_sensor[] = {
+ "EPOW Reset", "Cooling warning", "Power warning",
+ "System shutdown", "System halt", "EPOW main enclosure",
+ "EPOW power off" };
+ const char * battery_cyclestate[] = { "None", "In progress",
+ "Requested" };
+ const char * battery_charging[] = { "Charging", "Discharching",
+ "No current flow" };
+ const char * ibm_drconnector[] = { "Empty", "Present", "Unusable",
+ "Exchange" };
+
+ int have_strings = 0;
+ int num_states = 0;
+ int temperature = 0;
+ int unknown = 0;
+
+ /* What kind of sensor do we have here? */
+
+ switch (s->token) {
+ case KEY_SWITCH:
+ seq_printf(m, "Key switch:\t");
+ num_states = sizeof(key_switch) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t", key_switch[state]);
+ have_strings = 1;
+ }
+ break;
+ case ENCLOSURE_SWITCH:
+ seq_printf(m, "Enclosure switch:\t");
+ num_states = sizeof(enclosure_switch) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t",
+ enclosure_switch[state]);
+ have_strings = 1;
+ }
+ break;
+ case THERMAL_SENSOR:
+ seq_printf(m, "Temp. (C/F):\t");
+ temperature = 1;
+ break;
+ case LID_STATUS:
+ seq_printf(m, "Lid status:\t");
+ num_states = sizeof(lid_status) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t", lid_status[state]);
+ have_strings = 1;
+ }
+ break;
+ case POWER_SOURCE:
+ seq_printf(m, "Power source:\t");
+ num_states = sizeof(power_source) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t",
+ power_source[state]);
+ have_strings = 1;
+ }
+ break;
+ case BATTERY_VOLTAGE:
+ seq_printf(m, "Battery voltage:\t");
+ break;
+ case BATTERY_REMAINING:
+ seq_printf(m, "Battery remaining:\t");
+ num_states = sizeof(battery_remaining) / sizeof(char *);
+ if (state < num_states)
+ {
+ seq_printf(m, "%s\t",
+ battery_remaining[state]);
+ have_strings = 1;
+ }
+ break;
+ case BATTERY_PERCENTAGE:
+ seq_printf(m, "Battery percentage:\t");
+ break;
+ case EPOW_SENSOR:
+ seq_printf(m, "EPOW Sensor:\t");
+ num_states = sizeof(epow_sensor) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t", epow_sensor[state]);
+ have_strings = 1;
+ }
+ break;
+ case BATTERY_CYCLESTATE:
+ seq_printf(m, "Battery cyclestate:\t");
+ num_states = sizeof(battery_cyclestate) /
+ sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t",
+ battery_cyclestate[state]);
+ have_strings = 1;
+ }
+ break;
+ case BATTERY_CHARGING:
+ seq_printf(m, "Battery Charging:\t");
+ num_states = sizeof(battery_charging) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t",
+ battery_charging[state]);
+ have_strings = 1;
+ }
+ break;
+ case IBM_SURVEILLANCE:
+ seq_printf(m, "Surveillance:\t");
+ break;
+ case IBM_FANRPM:
+ seq_printf(m, "Fan (rpm):\t");
+ break;
+ case IBM_VOLTAGE:
+ seq_printf(m, "Voltage (mv):\t");
+ break;
+ case IBM_DRCONNECTOR:
+ seq_printf(m, "DR connector:\t");
+ num_states = sizeof(ibm_drconnector) / sizeof(char *);
+ if (state < num_states) {
+ seq_printf(m, "%s\t",
+ ibm_drconnector[state]);
+ have_strings = 1;
+ }
+ break;
+ case IBM_POWERSUPPLY:
+ seq_printf(m, "Powersupply:\t");
+ break;
+ default:
+ seq_printf(m, "Unknown sensor (type %d), ignoring it\n",
+ s->token);
+ unknown = 1;
+ have_strings = 1;
+ break;
+ }
+ if (have_strings == 0) {
+ if (temperature) {
+ seq_printf(m, "%4d /%4d\t", state, cel_to_fahr(state));
+ } else
+ seq_printf(m, "%10d\t", state);
+ }
+ if (unknown == 0) {
+ seq_printf(m, "%s\t", ppc_rtas_process_error(error));
+ get_location_code(m, s, loc);
+ }
+}
+
+/* ****************************************************************** */
+
+static void check_location(struct seq_file *m, char *c)
+{
+ switch (c[0]) {
+ case LOC_PLANAR:
+ seq_printf(m, "Planar #%c", c[1]);
+ break;
+ case LOC_CPU:
+ seq_printf(m, "CPU #%c", c[1]);
+ break;
+ case LOC_FAN:
+ seq_printf(m, "Fan #%c", c[1]);
+ break;
+ case LOC_RACKMOUNTED:
+ seq_printf(m, "Rack #%c", c[1]);
+ break;
+ case LOC_VOLTAGE:
+ seq_printf(m, "Voltage #%c", c[1]);
+ break;
+ case LOC_LCD:
+ seq_printf(m, "LCD #%c", c[1]);
+ break;
+ case '.':
+ seq_printf(m, "- %c", c[1]);
+ break;
+ default:
+ seq_printf(m, "Unknown location");
+ break;
+ }
+}
+
+
+/* ****************************************************************** */
+/*
+ * Format:
+ * ${LETTER}${NUMBER}[[-/]${LETTER}${NUMBER} [ ... ] ]
+ * the '.' may be an abbrevation
+ */
+static void check_location_string(struct seq_file *m, char *c)
+{
+ while (*c) {
+ if (isalpha(*c) || *c == '.')
+ check_location(m, c);
+ else if (*c == '/' || *c == '-')
+ seq_printf(m, " at ");
+ c++;
+ }
+}
+
+
+/* ****************************************************************** */
+
+static void get_location_code(struct seq_file *m, struct individual_sensor *s, char *loc)
+{
+ if (!loc || !*loc) {
+ seq_printf(m, "---");/* does not have a location */
+ } else {
+ check_location_string(m, loc);
+ }
+ seq_putc(m, ' ');
+}
+/* ****************************************************************** */
+/* INDICATORS - Tone Frequency */
+/* ****************************************************************** */
+static ssize_t ppc_rtas_tone_freq_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos)
+{
+ unsigned long freq;
+ int error = parse_number(buf, count, &freq);
+ if (error)
+ return error;
+
+ rtas_tone_frequency = freq; /* save it for later */
+ error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
+ TONE_FREQUENCY, 0, freq);
+ if (error)
+ printk(KERN_WARNING "error: setting tone frequency returned: %s\n",
+ ppc_rtas_process_error(error));
+ return count;
+}
+/* ****************************************************************** */
+static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%lu\n", rtas_tone_frequency);
+ return 0;
+}
+/* ****************************************************************** */
+/* INDICATORS - Tone Volume */
+/* ****************************************************************** */
+static ssize_t ppc_rtas_tone_volume_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *ppos)
+{
+ unsigned long volume;
+ int error = parse_number(buf, count, &volume);
+ if (error)
+ return error;
+
+ if (volume > 100)
+ volume = 100;
+
+ rtas_tone_volume = volume; /* save it for later */
+ error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
+ TONE_VOLUME, 0, volume);
+ if (error)
+ printk(KERN_WARNING "error: setting tone volume returned: %s\n",
+ ppc_rtas_process_error(error));
+ return count;
+}
+/* ****************************************************************** */
+static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%lu\n", rtas_tone_volume);
+ return 0;
+}
+
+#define RMO_READ_BUF_MAX 30
+
+/* RTAS Userspace access */
+static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%016lx %x\n", rtas_rmo_buf, RTAS_RMOBUF_MAX);
+ return 0;
+}
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 4d22eeeeb91..b7fc2d88495 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -43,6 +43,13 @@ char rtas_data_buf[RTAS_DATA_BUF_SIZE] __cacheline_aligned;
unsigned long rtas_rmo_buf;
/*
+ * If non-NULL, this gets called when the kernel terminates.
+ * This is done like this so rtas_flash can be a module.
+ */
+void (*rtas_flash_term_hook)(int);
+EXPORT_SYMBOL(rtas_flash_term_hook);
+
+/*
* call_rtas_display_status and call_rtas_display_status_delay
* are designed only for very early low-level debugging, which
* is why the token is hard-coded to 10.
@@ -206,6 +213,7 @@ void rtas_progress(char *s, unsigned short hex)
spin_unlock(&progress_lock);
}
+EXPORT_SYMBOL(rtas_progress); /* needed by rtas_flash module */
int rtas_token(const char *service)
{
@@ -492,6 +500,8 @@ int rtas_set_indicator(int indicator, int index, int new_value)
void rtas_restart(char *cmd)
{
+ if (rtas_flash_term_hook)
+ rtas_flash_term_hook(SYS_RESTART);
printk("RTAS system-reboot returned %d\n",
rtas_call(rtas_token("system-reboot"), 0, 1, NULL));
for (;;);
@@ -499,6 +509,8 @@ void rtas_restart(char *cmd)
void rtas_power_off(void)
{
+ if (rtas_flash_term_hook)
+ rtas_flash_term_hook(SYS_POWER_OFF);
/* allow power on only with power button press */
printk("RTAS power-off returned %d\n",
rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1));
@@ -507,7 +519,12 @@ void rtas_power_off(void)
void rtas_halt(void)
{
- rtas_power_off();
+ if (rtas_flash_term_hook)
+ rtas_flash_term_hook(SYS_HALT);
+ /* allow power on only with power button press */
+ printk("RTAS power-off returned %d\n",
+ rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1));
+ for (;;);
}
/* Must be in the RMO region, so we place it here */
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
new file mode 100644
index 00000000000..50500093c97
--- /dev/null
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -0,0 +1,834 @@
+/*
+ * c 2001 PPC 64 Team, IBM Corp
+ *
+ * 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.
+ *
+ * /proc/ppc64/rtas/firmware_flash interface
+ *
+ * This file implements a firmware_flash interface to pump a firmware
+ * image into the kernel. At reboot time rtas_restart() will see the
+ * firmware image and flash it as it reboots (see rtas.c).
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <asm/delay.h>
+#include <asm/uaccess.h>
+#include <asm/rtas.h>
+#include <asm/abs_addr.h>
+
+#define MODULE_VERS "1.0"
+#define MODULE_NAME "rtas_flash"
+
+#define FIRMWARE_FLASH_NAME "firmware_flash"
+#define FIRMWARE_UPDATE_NAME "firmware_update"
+#define MANAGE_FLASH_NAME "manage_flash"
+#define VALIDATE_FLASH_NAME "validate_flash"
+
+/* General RTAS Status Codes */
+#define RTAS_RC_SUCCESS 0
+#define RTAS_RC_HW_ERR -1
+#define RTAS_RC_BUSY -2
+
+/* Flash image status values */
+#define FLASH_AUTH -9002 /* RTAS Not Service Authority Partition */
+#define FLASH_NO_OP -1099 /* No operation initiated by user */
+#define FLASH_IMG_SHORT -1005 /* Flash image shorter than expected */
+#define FLASH_IMG_BAD_LEN -1004 /* Bad length value in flash list block */
+#define FLASH_IMG_NULL_DATA -1003 /* Bad data value in flash list block */
+#define FLASH_IMG_READY 0 /* Firmware img ready for flash on reboot */
+
+/* Manage image status values */
+#define MANAGE_AUTH -9002 /* RTAS Not Service Authority Partition */
+#define MANAGE_ACTIVE_ERR -9001 /* RTAS Cannot Overwrite Active Img */
+#define MANAGE_NO_OP -1099 /* No operation initiated by user */
+#define MANAGE_PARAM_ERR -3 /* RTAS Parameter Error */
+#define MANAGE_HW_ERR -1 /* RTAS Hardware Error */
+
+/* Validate image status values */
+#define VALIDATE_AUTH -9002 /* RTAS Not Service Authority Partition */
+#define VALIDATE_NO_OP -1099 /* No operation initiated by the user */
+#define VALIDATE_INCOMPLETE -1002 /* User copied < VALIDATE_BUF_SIZE */
+#define VALIDATE_READY -1001 /* Firmware image ready for validation */
+#define VALIDATE_PARAM_ERR -3 /* RTAS Parameter Error */
+#define VALIDATE_HW_ERR -1 /* RTAS Hardware Error */
+#define VALIDATE_TMP_UPDATE 0 /* Validate Return Status */
+#define VALIDATE_FLASH_AUTH 1 /* Validate Return Status */
+#define VALIDATE_INVALID_IMG 2 /* Validate Return Status */
+#define VALIDATE_CUR_UNKNOWN 3 /* Validate Return Status */
+#define VALIDATE_TMP_COMMIT_DL 4 /* Validate Return Status */
+#define VALIDATE_TMP_COMMIT 5 /* Validate Return Status */
+#define VALIDATE_TMP_UPDATE_DL 6 /* Validate Return Status */
+
+/* ibm,manage-flash-image operation tokens */
+#define RTAS_REJECT_TMP_IMG 0
+#define RTAS_COMMIT_TMP_IMG 1
+
+/* Array sizes */
+#define VALIDATE_BUF_SIZE 4096
+#define RTAS_MSG_MAXLEN 64
+
+struct flash_block {
+ char *data;
+ unsigned long length;
+};
+
+/* This struct is very similar but not identical to
+ * that needed by the rtas flash update.
+ * All we need to do for rtas is rewrite num_blocks
+ * into a version/length and translate the pointers
+ * to absolute.
+ */
+#define FLASH_BLOCKS_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct flash_block))
+struct flash_block_list {
+ unsigned long num_blocks;
+ struct flash_block_list *next;
+ struct flash_block blocks[FLASH_BLOCKS_PER_NODE];
+};
+struct flash_block_list_header { /* just the header of flash_block_list */
+ unsigned long num_blocks;
+ struct flash_block_list *next;
+};
+
+static struct flash_block_list_header rtas_firmware_flash_list = {0, NULL};
+
+#define FLASH_BLOCK_LIST_VERSION (1UL)
+
+/* Local copy of the flash block list.
+ * We only allow one open of the flash proc file and create this
+ * list as we go. This list will be put in the
+ * rtas_firmware_flash_list var once it is fully read.
+ *
+ * For convenience as we build the list we use virtual addrs,
+ * we do not fill in the version number, and the length field
+ * is treated as the number of entries currently in the block
+ * (i.e. not a byte count). This is all fixed on release.
+ */
+
+/* Status int must be first member of struct */
+struct rtas_update_flash_t
+{
+ int status; /* Flash update status */
+ struct flash_block_list *flist; /* Local copy of flash block list */
+};
+
+/* Status int must be first member of struct */
+struct rtas_manage_flash_t
+{
+ int status; /* Returned status */
+ unsigned int op; /* Reject or commit image */
+};
+
+/* Status int must be first member of struct */
+struct rtas_validate_flash_t
+{
+ int status; /* Returned status */
+ char buf[VALIDATE_BUF_SIZE]; /* Candidate image buffer */
+ unsigned int buf_size; /* Size of image buf */
+ unsigned int update_results; /* Update results token */
+};
+
+static DEFINE_SPINLOCK(flash_file_open_lock);
+static struct proc_dir_entry *firmware_flash_pde;
+static struct proc_dir_entry *firmware_update_pde;
+static struct proc_dir_entry *validate_pde;
+static struct proc_dir_entry *manage_pde;
+
+/* Do simple sanity checks on the flash image. */
+static int flash_list_valid(struct flash_block_list *flist)
+{
+ struct flash_block_list *f;
+ int i;
+ unsigned long block_size, image_size;
+
+ /* Paranoid self test here. We also collect the image size. */
+ image_size = 0;
+ for (f = flist; f; f = f->next) {
+ for (i = 0; i < f->num_blocks; i++) {
+ if (f->blocks[i].data == NULL) {
+ return FLASH_IMG_NULL_DATA;
+ }
+ block_size = f->blocks[i].length;
+ if (block_size <= 0 || block_size > PAGE_SIZE) {
+ return FLASH_IMG_BAD_LEN;
+ }
+ image_size += block_size;
+ }
+ }
+
+ if (image_size < (256 << 10)) {
+ if (image_size < 2)
+ return FLASH_NO_OP;
+ }
+
+ printk(KERN_INFO "FLASH: flash image with %ld bytes stored for hardware flash on reboot\n", image_size);
+
+ return FLASH_IMG_READY;
+}
+
+static void free_flash_list(struct flash_block_list *f)
+{
+ struct flash_block_list *next;
+ int i;
+
+ while (f) {
+ for (i = 0; i < f->num_blocks; i++)
+ free_page((unsigned long)(f->blocks[i].data));
+ next = f->next;
+ free_page((unsigned long)f);
+ f = next;
+ }
+}
+
+static int rtas_flash_release(struct inode *inode, struct file *file)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_update_flash_t *uf;
+
+ uf = (struct rtas_update_flash_t *) dp->data;
+ if (uf->flist) {
+ /* File was opened in write mode for a new flash attempt */
+ /* Clear saved list */
+ if (rtas_firmware_flash_list.next) {
+ free_flash_list(rtas_firmware_flash_list.next);
+ rtas_firmware_flash_list.next = NULL;
+ }
+
+ if (uf->status != FLASH_AUTH)
+ uf->status = flash_list_valid(uf->flist);
+
+ if (uf->status == FLASH_IMG_READY)
+ rtas_firmware_flash_list.next = uf->flist;
+ else
+ free_flash_list(uf->flist);
+
+ uf->flist = NULL;
+ }
+
+ atomic_dec(&dp->count);
+ return 0;
+}
+
+static void get_flash_status_msg(int status, char *buf)
+{
+ char *msg;
+
+ switch (status) {
+ case FLASH_AUTH:
+ msg = "error: this partition does not have service authority\n";
+ break;
+ case FLASH_NO_OP:
+ msg = "info: no firmware image for flash\n";
+ break;
+ case FLASH_IMG_SHORT:
+ msg = "error: flash image short\n";
+ break;
+ case FLASH_IMG_BAD_LEN:
+ msg = "error: internal error bad length\n";
+ break;
+ case FLASH_IMG_NULL_DATA:
+ msg = "error: internal error null data\n";
+ break;
+ case FLASH_IMG_READY:
+ msg = "ready: firmware image ready for flash on reboot\n";
+ break;
+ default:
+ sprintf(buf, "error: unexpected status value %d\n", status);
+ return;
+ }
+
+ strcpy(buf, msg);
+}
+
+/* Reading the proc file will show status (not the firmware contents) */
+static ssize_t rtas_flash_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_update_flash_t *uf;
+ char msg[RTAS_MSG_MAXLEN];
+ int msglen;
+
+ uf = (struct rtas_update_flash_t *) dp->data;
+
+ if (!strcmp(dp->name, FIRMWARE_FLASH_NAME)) {
+ get_flash_status_msg(uf->status, msg);
+ } else { /* FIRMWARE_UPDATE_NAME */
+ sprintf(msg, "%d\n", uf->status);
+ }
+ msglen = strlen(msg);
+ if (msglen > count)
+ msglen = count;
+
+ if (ppos && *ppos != 0)
+ return 0; /* be cheap */
+
+ if (!access_ok(VERIFY_WRITE, buf, msglen))
+ return -EINVAL;
+
+ if (copy_to_user(buf, msg, msglen))
+ return -EFAULT;
+
+ if (ppos)
+ *ppos = msglen;
+ return msglen;
+}
+
+/* We could be much more efficient here. But to keep this function
+ * simple we allocate a page to the block list no matter how small the
+ * count is. If the system is low on memory it will be just as well
+ * that we fail....
+ */
+static ssize_t rtas_flash_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_update_flash_t *uf;
+ char *p;
+ int next_free;
+ struct flash_block_list *fl;
+
+ uf = (struct rtas_update_flash_t *) dp->data;
+
+ if (uf->status == FLASH_AUTH || count == 0)
+ return count; /* discard data */
+
+ /* In the case that the image is not ready for flashing, the memory
+ * allocated for the block list will be freed upon the release of the
+ * proc file
+ */
+ if (uf->flist == NULL) {
+ uf->flist = (struct flash_block_list *) get_zeroed_page(GFP_KERNEL);
+ if (!uf->flist)
+ return -ENOMEM;
+ }
+
+ fl = uf->flist;
+ while (fl->next)
+ fl = fl->next; /* seek to last block_list for append */
+ next_free = fl->num_blocks;
+ if (next_free == FLASH_BLOCKS_PER_NODE) {
+ /* Need to allocate another block_list */
+ fl->next = (struct flash_block_list *)get_zeroed_page(GFP_KERNEL);
+ if (!fl->next)
+ return -ENOMEM;
+ fl = fl->next;
+ next_free = 0;
+ }
+
+ if (count > PAGE_SIZE)
+ count = PAGE_SIZE;
+ p = (char *)get_zeroed_page(GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+
+ if(copy_from_user(p, buffer, count)) {
+ free_page((unsigned long)p);
+ return -EFAULT;
+ }
+ fl->blocks[next_free].data = p;
+ fl->blocks[next_free].length = count;
+ fl->num_blocks++;
+
+ return count;
+}
+
+static int rtas_excl_open(struct inode *inode, struct file *file)
+{
+ struct proc_dir_entry *dp = PDE(inode);
+
+ /* Enforce exclusive open with use count of PDE */
+ spin_lock(&flash_file_open_lock);
+ if (atomic_read(&dp->count) > 1) {
+ spin_unlock(&flash_file_open_lock);
+ return -EBUSY;
+ }
+
+ atomic_inc(&dp->count);
+ spin_unlock(&flash_file_open_lock);
+
+ return 0;
+}
+
+static int rtas_excl_release(struct inode *inode, struct file *file)
+{
+ struct proc_dir_entry *dp = PDE(inode);
+
+ atomic_dec(&dp->count);
+
+ return 0;
+}
+
+static void manage_flash(struct rtas_manage_flash_t *args_buf)
+{
+ unsigned int wait_time;
+ s32 rc;
+
+ while (1) {
+ rc = rtas_call(rtas_token("ibm,manage-flash-image"), 1,
+ 1, NULL, args_buf->op);
+ if (rc == RTAS_RC_BUSY)
+ udelay(1);
+ else if (rtas_is_extended_busy(rc)) {
+ wait_time = rtas_extended_busy_delay_time(rc);
+ udelay(wait_time * 1000);
+ } else
+ break;
+ }
+
+ args_buf->status = rc;
+}
+
+static ssize_t manage_flash_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_manage_flash_t *args_buf;
+ char msg[RTAS_MSG_MAXLEN];
+ int msglen;
+
+ args_buf = (struct rtas_manage_flash_t *) dp->data;
+ if (args_buf == NULL)
+ return 0;
+
+ msglen = sprintf(msg, "%d\n", args_buf->status);
+ if (msglen > count)
+ msglen = count;
+
+ if (ppos && *ppos != 0)
+ return 0; /* be cheap */
+
+ if (!access_ok(VERIFY_WRITE, buf, msglen))
+ return -EINVAL;
+
+ if (copy_to_user(buf, msg, msglen))
+ return -EFAULT;
+
+ if (ppos)
+ *ppos = msglen;
+ return msglen;
+}
+
+static ssize_t manage_flash_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_manage_flash_t *args_buf;
+ const char reject_str[] = "0";
+ const char commit_str[] = "1";
+ char stkbuf[10];
+ int op;
+
+ args_buf = (struct rtas_manage_flash_t *) dp->data;
+ if ((args_buf->status == MANAGE_AUTH) || (count == 0))
+ return count;
+
+ op = -1;
+ if (buf) {
+ if (count > 9) count = 9;
+ if (copy_from_user (stkbuf, buf, count)) {
+ return -EFAULT;
+ }
+ if (strncmp(stkbuf, reject_str, strlen(reject_str)) == 0)
+ op = RTAS_REJECT_TMP_IMG;
+ else if (strncmp(stkbuf, commit_str, strlen(commit_str)) == 0)
+ op = RTAS_COMMIT_TMP_IMG;
+ }
+
+ if (op == -1) /* buf is empty, or contains invalid string */
+ return -EINVAL;
+
+ args_buf->op = op;
+ manage_flash(args_buf);
+
+ return count;
+}
+
+static void validate_flash(struct rtas_validate_flash_t *args_buf)
+{
+ int token = rtas_token("ibm,validate-flash-image");
+ unsigned int wait_time;
+ int update_results;
+ s32 rc;
+
+ rc = 0;
+ while(1) {
+ spin_lock(&rtas_data_buf_lock);
+ memcpy(rtas_data_buf, args_buf->buf, VALIDATE_BUF_SIZE);
+ rc = rtas_call(token, 2, 2, &update_results,
+ (u32) __pa(rtas_data_buf), args_buf->buf_size);
+ memcpy(args_buf->buf, rtas_data_buf, VALIDATE_BUF_SIZE);
+ spin_unlock(&rtas_data_buf_lock);
+
+ if (rc == RTAS_RC_BUSY)
+ udelay(1);
+ else if (rtas_is_extended_busy(rc)) {
+ wait_time = rtas_extended_busy_delay_time(rc);
+ udelay(wait_time * 1000);
+ } else
+ break;
+ }
+
+ args_buf->status = rc;
+ args_buf->update_results = update_results;
+}
+
+static int get_validate_flash_msg(struct rtas_validate_flash_t *args_buf,
+ char *msg)
+{
+ int n;
+
+ if (args_buf->status >= VALIDATE_TMP_UPDATE) {
+ n = sprintf(msg, "%d\n", args_buf->update_results);
+ if ((args_buf->update_results >= VALIDATE_CUR_UNKNOWN) ||
+ (args_buf->update_results == VALIDATE_TMP_UPDATE))
+ n += sprintf(msg + n, "%s\n", args_buf->buf);
+ } else {
+ n = sprintf(msg, "%d\n", args_buf->status);
+ }
+ return n;
+}
+
+static ssize_t validate_flash_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_validate_flash_t *args_buf;
+ char msg[RTAS_MSG_MAXLEN];
+ int msglen;
+
+ args_buf = (struct rtas_validate_flash_t *) dp->data;
+
+ if (ppos && *ppos != 0)
+ return 0; /* be cheap */
+
+ msglen = get_validate_flash_msg(args_buf, msg);
+ if (msglen > count)
+ msglen = count;
+
+ if (!access_ok(VERIFY_WRITE, buf, msglen))
+ return -EINVAL;
+
+ if (copy_to_user(buf, msg, msglen))
+ return -EFAULT;
+
+ if (ppos)
+ *ppos = msglen;
+ return msglen;
+}
+
+static ssize_t validate_flash_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_validate_flash_t *args_buf;
+ int rc;
+
+ args_buf = (struct rtas_validate_flash_t *) dp->data;
+
+ if (dp->data == NULL) {
+ dp->data = kmalloc(sizeof(struct rtas_validate_flash_t),
+ GFP_KERNEL);
+ if (dp->data == NULL)
+ return -ENOMEM;
+ }
+
+ /* We are only interested in the first 4K of the
+ * candidate image */
+ if ((*off >= VALIDATE_BUF_SIZE) ||
+ (args_buf->status == VALIDATE_AUTH)) {
+ *off += count;
+ return count;
+ }
+
+ if (*off + count >= VALIDATE_BUF_SIZE) {
+ count = VALIDATE_BUF_SIZE - *off;
+ args_buf->status = VALIDATE_READY;
+ } else {
+ args_buf->status = VALIDATE_INCOMPLETE;
+ }
+
+ if (!access_ok(VERIFY_READ, buf, count)) {
+ rc = -EFAULT;
+ goto done;
+ }
+ if (copy_from_user(args_buf->buf + *off, buf, count)) {
+ rc = -EFAULT;
+ goto done;
+ }
+
+ *off += count;
+ rc = count;
+done:
+ if (rc < 0) {
+ kfree(dp->data);
+ dp->data = NULL;
+ }
+ return rc;
+}
+
+static int validate_flash_release(struct inode *inode, struct file *file)
+{
+ struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
+ struct rtas_validate_flash_t *args_buf;
+
+ args_buf = (struct rtas_validate_flash_t *) dp->data;
+
+ if (args_buf->status == VALIDATE_READY) {
+ args_buf->buf_size = VALIDATE_BUF_SIZE;
+ validate_flash(args_buf);
+ }
+
+ /* The matching atomic_inc was in rtas_excl_open() */
+ atomic_dec(&dp->count);
+
+ return 0;
+}
+
+static void rtas_flash_firmware(int reboot_type)
+{
+ unsigned long image_size;
+ struct flash_block_list *f, *next, *flist;
+ unsigned long rtas_block_list;
+ int i, status, update_token;
+
+ if (rtas_firmware_flash_list.next == NULL)
+ return; /* nothing to do */
+
+ if (reboot_type != SYS_RESTART) {
+ printk(KERN_ALERT "FLASH: firmware flash requires a reboot\n");
+ printk(KERN_ALERT "FLASH: the firmware image will NOT be flashed\n");
+ return;
+ }
+
+ update_token = rtas_token("ibm,update-flash-64-and-reboot");
+ if (update_token == RTAS_UNKNOWN_SERVICE) {
+ printk(KERN_ALERT "FLASH: ibm,update-flash-64-and-reboot "
+ "is not available -- not a service partition?\n");
+ printk(KERN_ALERT "FLASH: firmware will not be flashed\n");
+ return;
+ }
+
+ /* NOTE: the "first" block list is a global var with no data
+ * blocks in the kernel data segment. We do this because
+ * we want to ensure this block_list addr is under 4GB.
+ */
+ rtas_firmware_flash_list.num_blocks = 0;
+ flist = (struct flash_block_list *)&rtas_firmware_flash_list;
+ rtas_block_list = virt_to_abs(flist);
+ if (rtas_block_list >= 4UL*1024*1024*1024) {
+ printk(KERN_ALERT "FLASH: kernel bug...flash list header addr above 4GB\n");
+ return;
+ }
+
+ printk(KERN_ALERT "FLASH: preparing saved firmware image for flash\n");
+ /* Update the block_list in place. */
+ image_size = 0;
+ for (f = flist; f; f = next) {
+ /* Translate data addrs to absolute */
+ for (i = 0; i < f->num_blocks; i++) {
+ f->blocks[i].data = (char *)virt_to_abs(f->blocks[i].data);
+ image_size += f->blocks[i].length;
+ }
+ next = f->next;
+ /* Don't translate NULL pointer for last entry */
+ if (f->next)
+ f->next = (struct flash_block_list *)virt_to_abs(f->next);
+ else
+ f->next = NULL;
+ /* make num_blocks into the version/length field */
+ f->num_blocks = (FLASH_BLOCK_LIST_VERSION << 56) | ((f->num_blocks+1)*16);
+ }
+
+ printk(KERN_ALERT "FLASH: flash image is %ld bytes\n", image_size);
+ printk(KERN_ALERT "FLASH: performing flash and reboot\n");
+ rtas_progress("Flashing \n", 0x0);
+ rtas_progress("Please Wait... ", 0x0);
+ printk(KERN_ALERT "FLASH: this will take several minutes. Do not power off!\n");
+ status = rtas_call(update_token, 1, 1, NULL, rtas_block_list);
+ switch (status) { /* should only get "bad" status */
+ case 0:
+ printk(KERN_ALERT "FLASH: success\n");
+ break;
+ case -1:
+ printk(KERN_ALERT "FLASH: hardware error. Firmware may not be not flashed\n");
+ break;
+ case -3:
+ printk(KERN_ALERT "FLASH: image is corrupt or not correct for this platform. Firmware not flashed\n");
+ break;
+ case -4:
+ printk(KERN_ALERT "FLASH: flash failed when partially complete. System may not reboot\n");
+ break;
+ default:
+ printk(KERN_ALERT "FLASH: unknown flash return code %d\n", status);
+ break;
+ }
+}
+
+static void remove_flash_pde(struct proc_dir_entry *dp)
+{
+ if (dp) {
+ if (dp->data != NULL)
+ kfree(dp->data);
+ dp->owner = NULL;
+ remove_proc_entry(dp->name, dp->parent);
+ }
+}
+
+static int initialize_flash_pde_data(const char *rtas_call_name,
+ size_t buf_size,
+ struct proc_dir_entry *dp)
+{
+ int *status;
+ int token;
+
+ dp->data = kmalloc(buf_size, GFP_KERNEL);
+ if (dp->data == NULL) {
+ remove_flash_pde(dp);
+ return -ENOMEM;
+ }
+
+ memset(dp->data, 0, buf_size);
+
+ /*
+ * This code assumes that the status int is the first member of the
+ * struct
+ */
+ status = (int *) dp->data;
+ token = rtas_token(rtas_call_name);
+ if (token == RTAS_UNKNOWN_SERVICE)
+ *status = FLASH_AUTH;
+ else
+ *status = FLASH_NO_OP;
+
+ return 0;
+}
+
+static struct proc_dir_entry *create_flash_pde(const char *filename,
+ struct file_operations *fops)
+{
+ struct proc_dir_entry *ent = NULL;
+
+ ent = create_proc_entry(filename, S_IRUSR | S_IWUSR, NULL);
+ if (ent != NULL) {
+ ent->nlink = 1;
+ ent->proc_fops = fops;
+ ent->owner = THIS_MODULE;
+ }
+
+ return ent;
+}
+
+static struct file_operations rtas_flash_operations = {
+ .read = rtas_flash_read,
+ .write = rtas_flash_write,
+ .open = rtas_excl_open,
+ .release = rtas_flash_release,
+};
+
+static struct file_operations manage_flash_operations = {
+ .read = manage_flash_read,
+ .write = manage_flash_write,
+ .open = rtas_excl_open,
+ .release = rtas_excl_release,
+};
+
+static struct file_operations validate_flash_operations = {
+ .read = validate_flash_read,
+ .write = validate_flash_write,
+ .open = rtas_excl_open,
+ .release = validate_flash_release,
+};
+
+int __init rtas_flash_init(void)
+{
+ int rc;
+
+ if (rtas_token("ibm,update-flash-64-and-reboot") ==
+ RTAS_UNKNOWN_SERVICE) {
+ printk(KERN_ERR "rtas_flash: no firmware flash support\n");
+ return 1;
+ }
+
+ firmware_flash_pde = create_flash_pde("ppc64/rtas/"
+ FIRMWARE_FLASH_NAME,
+ &rtas_flash_operations);
+ if (firmware_flash_pde == NULL) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+
+ rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
+ sizeof(struct rtas_update_flash_t),
+ firmware_flash_pde);
+ if (rc != 0)
+ goto cleanup;
+
+ firmware_update_pde = create_flash_pde("ppc64/rtas/"
+ FIRMWARE_UPDATE_NAME,
+ &rtas_flash_operations);
+ if (firmware_update_pde == NULL) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+
+ rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
+ sizeof(struct rtas_update_flash_t),
+ firmware_update_pde);
+ if (rc != 0)
+ goto cleanup;
+
+ validate_pde = create_flash_pde("ppc64/rtas/" VALIDATE_FLASH_NAME,
+ &validate_flash_operations);
+ if (validate_pde == NULL) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+
+ rc = initialize_flash_pde_data("ibm,validate-flash-image",
+ sizeof(struct rtas_validate_flash_t),
+ validate_pde);
+ if (rc != 0)
+ goto cleanup;
+
+ manage_pde = create_flash_pde("ppc64/rtas/" MANAGE_FLASH_NAME,
+ &manage_flash_operations);
+ if (manage_pde == NULL) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+
+ rc = initialize_flash_pde_data("ibm,manage-flash-image",
+ sizeof(struct rtas_manage_flash_t),
+ manage_pde);
+ if (rc != 0)
+ goto cleanup;
+
+ rtas_flash_term_hook = rtas_flash_firmware;
+ return 0;
+
+cleanup:
+ remove_flash_pde(firmware_flash_pde);
+ remove_flash_pde(firmware_update_pde);
+ remove_flash_pde(validate_pde);
+ remove_flash_pde(manage_pde);
+
+ return rc;
+}
+
+void __exit rtas_flash_cleanup(void)
+{
+ rtas_flash_term_hook = NULL;
+ remove_flash_pde(firmware_flash_pde);
+ remove_flash_pde(firmware_update_pde);
+ remove_flash_pde(validate_pde);
+ remove_flash_pde(manage_pde);
+}
+
+module_init(rtas_flash_init);
+module_exit(rtas_flash_cleanup);
+MODULE_LICENSE("GPL");
diff --git a/arch/powerpc/kernel/rtas_fw.c b/arch/powerpc/kernel/rtas_fw.c
deleted file mode 100644
index 448922e8af1..00000000000
--- a/arch/powerpc/kernel/rtas_fw.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- *
- * Procedures for firmware flash updates.
- *
- * Peter Bergner, IBM March 2001.
- * Copyright (C) 2001 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.
- */
-
-#include <stdarg.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <asm/prom.h>
-#include <asm/rtas.h>
-#include <asm/semaphore.h>
-#include <asm/machdep.h>
-#include <asm/page.h>
-#include <asm/param.h>
-#include <asm/system.h>
-#include <asm/abs_addr.h>
-#include <asm/udbg.h>
-#include <asm/delay.h>
-#include <asm/uaccess.h>
-#include <asm/systemcfg.h>
-
-struct flash_block_list_header rtas_firmware_flash_list = {0, NULL};
-
-#define FLASH_BLOCK_LIST_VERSION (1UL)
-
-static void rtas_flash_firmware(void)
-{
- unsigned long image_size;
- struct flash_block_list *f, *next, *flist;
- unsigned long rtas_block_list;
- int i, status, update_token;
-
- update_token = rtas_token("ibm,update-flash-64-and-reboot");
- if (update_token == RTAS_UNKNOWN_SERVICE) {
- printk(KERN_ALERT "FLASH: ibm,update-flash-64-and-reboot is not available -- not a service partition?\n");
- printk(KERN_ALERT "FLASH: firmware will not be flashed\n");
- return;
- }
-
- /* NOTE: the "first" block list is a global var with no data
- * blocks in the kernel data segment. We do this because
- * we want to ensure this block_list addr is under 4GB.
- */
- rtas_firmware_flash_list.num_blocks = 0;
- flist = (struct flash_block_list *)&rtas_firmware_flash_list;
- rtas_block_list = virt_to_abs(flist);
- if (rtas_block_list >= 4UL*1024*1024*1024) {
- printk(KERN_ALERT "FLASH: kernel bug...flash list header addr above 4GB\n");
- return;
- }
-
- printk(KERN_ALERT "FLASH: preparing saved firmware image for flash\n");
- /* Update the block_list in place. */
- image_size = 0;
- for (f = flist; f; f = next) {
- /* Translate data addrs to absolute */
- for (i = 0; i < f->num_blocks; i++) {
- f->blocks[i].data = (char *)virt_to_abs(f->blocks[i].data);
- image_size += f->blocks[i].length;
- }
- next = f->next;
- /* Don't translate NULL pointer for last entry */
- if (f->next)
- f->next = (struct flash_block_list *)virt_to_abs(f->next);
- else
- f->next = NULL;
- /* make num_blocks into the version/length field */
- f->num_blocks = (FLASH_BLOCK_LIST_VERSION << 56) | ((f->num_blocks+1)*16);
- }
-
- printk(KERN_ALERT "FLASH: flash image is %ld bytes\n", image_size);
- printk(KERN_ALERT "FLASH: performing flash and reboot\n");
- rtas_progress("Flashing \n", 0x0);
- rtas_progress("Please Wait... ", 0x0);
- printk(KERN_ALERT "FLASH: this will take several minutes. Do not power off!\n");
- status = rtas_call(update_token, 1, 1, NULL, rtas_block_list);
- switch (status) { /* should only get "bad" status */
- case 0:
- printk(KERN_ALERT "FLASH: success\n");
- break;
- case -1:
- printk(KERN_ALERT "FLASH: hardware error. Firmware may not be not flashed\n");
- break;
- case -3:
- printk(KERN_ALERT "FLASH: image is corrupt or not correct for this platform. Firmware not flashed\n");
- break;
- case -4:
- printk(KERN_ALERT "FLASH: flash failed when partially complete. System may not reboot\n");
- break;
- default:
- printk(KERN_ALERT "FLASH: unknown flash return code %d\n", status);
- break;
- }
-}
-
-void rtas_flash_bypass_warning(void)
-{
- printk(KERN_ALERT "FLASH: firmware flash requires a reboot\n");
- printk(KERN_ALERT "FLASH: the firmware image will NOT be flashed\n");
-}
-
-
-void rtas_fw_restart(char *cmd)
-{
- if (rtas_firmware_flash_list.next)
- rtas_flash_firmware();
- rtas_restart(cmd);
-}
-
-void rtas_fw_power_off(void)
-{
- if (rtas_firmware_flash_list.next)
- rtas_flash_bypass_warning();
- rtas_power_off();
-}
-
-void rtas_fw_halt(void)
-{
- if (rtas_firmware_flash_list.next)
- rtas_flash_bypass_warning();
- rtas_halt();
-}
-
-EXPORT_SYMBOL(rtas_firmware_flash_list);
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 444c3e81884..876c57c1136 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -43,7 +43,7 @@
#include <asm/uaccess.h>
#include <asm/cacheflush.h>
#ifdef CONFIG_PPC64
-#include <asm/ppc32.h>
+#include "ppc32.h"
#include <asm/ppcdebug.h>
#include <asm/unistd.h>
#include <asm/vdso.h>
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
new file mode 100644
index 00000000000..ec9d0984b6a
--- /dev/null
+++ b/arch/powerpc/kernel/signal_64.c
@@ -0,0 +1,581 @@
+/*
+ * linux/arch/ppc64/kernel/signal.c
+ *
+ * PowerPC version
+ * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Derived from "arch/i386/kernel/signal.c"
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/elf.h>
+#include <linux/ptrace.h>
+#include <linux/module.h>
+
+#include <asm/sigcontext.h>
+#include <asm/ucontext.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/ppcdebug.h>
+#include <asm/unistd.h>
+#include <asm/cacheflush.h>
+#include <asm/vdso.h>
+
+#define DEBUG_SIG 0
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+#define GP_REGS_SIZE min(sizeof(elf_gregset_t), sizeof(struct pt_regs))
+#define FP_REGS_SIZE sizeof(elf_fpregset_t)
+
+#define TRAMP_TRACEBACK 3
+#define TRAMP_SIZE 6
+
+/*
+ * When we have signals to deliver, we set up on the user stack,
+ * going down from the original stack pointer:
+ * 1) a rt_sigframe struct which contains the ucontext
+ * 2) a gap of __SIGNAL_FRAMESIZE bytes which acts as a dummy caller
+ * frame for the signal handler.
+ */
+
+struct rt_sigframe {
+ /* sys_rt_sigreturn requires the ucontext be the first field */
+ struct ucontext uc;
+ unsigned long _unused[2];
+ unsigned int tramp[TRAMP_SIZE];
+ struct siginfo *pinfo;
+ void *puc;
+ struct siginfo info;
+ /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
+ char abigap[288];
+} __attribute__ ((aligned (16)));
+
+
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, int p3, int p4,
+ int p6, int p7, struct pt_regs *regs)
+{
+ sigset_t saveset, newset;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset, unewset, sizeof(newset)))
+ return -EFAULT;
+ sigdelsetmask(&newset, ~_BLOCKABLE);
+
+ spin_lock_irq(&current->sighand->siglock);
+ saveset = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ regs->result = -EINTR;
+ regs->gpr[3] = EINTR;
+ regs->ccr |= 0x10000000;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(&saveset, regs))
+ return 0;
+ }
+}
+
+long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r5,
+ unsigned long r6, unsigned long r7, unsigned long r8,
+ struct pt_regs *regs)
+{
+ return do_sigaltstack(uss, uoss, regs->gpr[1]);
+}
+
+
+/*
+ * Set up the sigcontext for the signal frame.
+ */
+
+static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
+ int signr, sigset_t *set, unsigned long handler)
+{
+ /* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
+ * process never used altivec yet (MSR_VEC is zero in pt_regs of
+ * the context). This is very important because we must ensure we
+ * don't lose the VRSAVE content that may have been set prior to
+ * the process doing its first vector operation
+ * Userland shall check AT_HWCAP to know wether it can rely on the
+ * v_regs pointer or not
+ */
+#ifdef CONFIG_ALTIVEC
+ elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *)(((unsigned long)sc->vmx_reserve + 15) & ~0xful);
+#endif
+ long err = 0;
+
+ flush_fp_to_thread(current);
+
+ /* Make sure signal doesn't get spurrious FP exceptions */
+ current->thread.fpscr.val = 0;
+
+#ifdef CONFIG_ALTIVEC
+ err |= __put_user(v_regs, &sc->v_regs);
+
+ /* save altivec registers */
+ if (current->thread.used_vr) {
+ flush_altivec_to_thread(current);
+ /* Copy 33 vec registers (vr0..31 and vscr) to the stack */
+ err |= __copy_to_user(v_regs, current->thread.vr, 33 * sizeof(vector128));
+ /* set MSR_VEC in the MSR value in the frame to indicate that sc->v_reg)
+ * contains valid data.
+ */
+ regs->msr |= MSR_VEC;
+ }
+ /* We always copy to/from vrsave, it's 0 if we don't have or don't
+ * use altivec.
+ */
+ err |= __put_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
+#else /* CONFIG_ALTIVEC */
+ err |= __put_user(0, &sc->v_regs);
+#endif /* CONFIG_ALTIVEC */
+ err |= __put_user(&sc->gp_regs, &sc->regs);
+ err |= __copy_to_user(&sc->gp_regs, regs, GP_REGS_SIZE);
+ err |= __copy_to_user(&sc->fp_regs, &current->thread.fpr, FP_REGS_SIZE);
+ err |= __put_user(signr, &sc->signal);
+ err |= __put_user(handler, &sc->handler);
+ if (set != NULL)
+ err |= __put_user(set->sig[0], &sc->oldmask);
+
+ return err;
+}
+
+/*
+ * Restore the sigcontext from the signal frame.
+ */
+
+static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
+ struct sigcontext __user *sc)
+{
+#ifdef CONFIG_ALTIVEC
+ elf_vrreg_t __user *v_regs;
+#endif
+ unsigned long err = 0;
+ unsigned long save_r13 = 0;
+ elf_greg_t *gregs = (elf_greg_t *)regs;
+#ifdef CONFIG_ALTIVEC
+ unsigned long msr;
+#endif
+ int i;
+
+ /* If this is not a signal return, we preserve the TLS in r13 */
+ if (!sig)
+ save_r13 = regs->gpr[13];
+
+ /* copy everything before MSR */
+ err |= __copy_from_user(regs, &sc->gp_regs,
+ PT_MSR*sizeof(unsigned long));
+
+ /* skip MSR and SOFTE */
+ for (i = PT_MSR+1; i <= PT_RESULT; i++) {
+ if (i == PT_SOFTE)
+ continue;
+ err |= __get_user(gregs[i], &sc->gp_regs[i]);
+ }
+
+ if (!sig)
+ regs->gpr[13] = save_r13;
+ err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
+ if (set != NULL)
+ err |= __get_user(set->sig[0], &sc->oldmask);
+
+#ifdef CONFIG_ALTIVEC
+ err |= __get_user(v_regs, &sc->v_regs);
+ err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
+ if (err)
+ return err;
+ /* Copy 33 vec registers (vr0..31 and vscr) from the stack */
+ if (v_regs != 0 && (msr & MSR_VEC) != 0)
+ err |= __copy_from_user(current->thread.vr, v_regs,
+ 33 * sizeof(vector128));
+ else if (current->thread.used_vr)
+ memset(current->thread.vr, 0, 33 * sizeof(vector128));
+ /* Always get VRSAVE back */
+ if (v_regs != 0)
+ err |= __get_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
+ else
+ current->thread.vrsave = 0;
+#endif /* CONFIG_ALTIVEC */
+
+#ifndef CONFIG_SMP
+ preempt_disable();
+ if (last_task_used_math == current)
+ last_task_used_math = NULL;
+ if (last_task_used_altivec == current)
+ last_task_used_altivec = NULL;
+ preempt_enable();
+#endif
+ /* Force reload of FP/VEC */
+ regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC);
+
+ return err;
+}
+
+/*
+ * Allocate space for the signal frame
+ */
+static inline void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+ size_t frame_size)
+{
+ unsigned long newsp;
+
+ /* Default to using normal stack */
+ newsp = regs->gpr[1];
+
+ if (ka->sa.sa_flags & SA_ONSTACK) {
+ if (! on_sig_stack(regs->gpr[1]))
+ newsp = (current->sas_ss_sp + current->sas_ss_size);
+ }
+
+ return (void __user *)((newsp - frame_size) & -16ul);
+}
+
+/*
+ * Setup the trampoline code on the stack
+ */
+static long setup_trampoline(unsigned int syscall, unsigned int __user *tramp)
+{
+ int i;
+ long err = 0;
+
+ /* addi r1, r1, __SIGNAL_FRAMESIZE # Pop the dummy stackframe */
+ err |= __put_user(0x38210000UL | (__SIGNAL_FRAMESIZE & 0xffff), &tramp[0]);
+ /* li r0, __NR_[rt_]sigreturn| */
+ err |= __put_user(0x38000000UL | (syscall & 0xffff), &tramp[1]);
+ /* sc */
+ err |= __put_user(0x44000002UL, &tramp[2]);
+
+ /* Minimal traceback info */
+ for (i=TRAMP_TRACEBACK; i < TRAMP_SIZE ;i++)
+ err |= __put_user(0, &tramp[i]);
+
+ if (!err)
+ flush_icache_range((unsigned long) &tramp[0],
+ (unsigned long) &tramp[TRAMP_SIZE]);
+
+ return err;
+}
+
+/*
+ * Restore the user process's signal mask (also used by signal32.c)
+ */
+void restore_sigmask(sigset_t *set)
+{
+ sigdelsetmask(set, ~_BLOCKABLE);
+ spin_lock_irq(&current->sighand->siglock);
+ current->blocked = *set;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+}
+
+
+/*
+ * Handle {get,set,swap}_context operations
+ */
+int sys_swapcontext(struct ucontext __user *old_ctx,
+ struct ucontext __user *new_ctx,
+ long ctx_size, long r6, long r7, long r8, struct pt_regs *regs)
+{
+ unsigned char tmp;
+ sigset_t set;
+
+ /* Context size is for future use. Right now, we only make sure
+ * we are passed something we understand
+ */
+ if (ctx_size < sizeof(struct ucontext))
+ return -EINVAL;
+
+ if (old_ctx != NULL) {
+ if (!access_ok(VERIFY_WRITE, old_ctx, sizeof(*old_ctx))
+ || setup_sigcontext(&old_ctx->uc_mcontext, regs, 0, NULL, 0)
+ || __copy_to_user(&old_ctx->uc_sigmask,
+ &current->blocked, sizeof(sigset_t)))
+ return -EFAULT;
+ }
+ if (new_ctx == NULL)
+ return 0;
+ if (!access_ok(VERIFY_READ, new_ctx, sizeof(*new_ctx))
+ || __get_user(tmp, (u8 __user *) new_ctx)
+ || __get_user(tmp, (u8 __user *) (new_ctx + 1) - 1))
+ return -EFAULT;
+
+ /*
+ * If we get a fault copying the context into the kernel's
+ * image of the user's registers, we can't just return -EFAULT
+ * because the user's registers will be corrupted. For instance
+ * the NIP value may have been updated but not some of the
+ * other registers. Given that we have done the access_ok
+ * and successfully read the first and last bytes of the region
+ * above, this should only happen in an out-of-memory situation
+ * or if another thread unmaps the region containing the context.
+ * We kill the task with a SIGSEGV in this situation.
+ */
+
+ if (__copy_from_user(&set, &new_ctx->uc_sigmask, sizeof(set)))
+ do_exit(SIGSEGV);
+ restore_sigmask(&set);
+ if (restore_sigcontext(regs, NULL, 0, &new_ctx->uc_mcontext))
+ do_exit(SIGSEGV);
+
+ /* This returns like rt_sigreturn */
+ return 0;
+}
+
+
+/*
+ * Do a signal return; undo the signal stack.
+ */
+
+int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7, unsigned long r8,
+ struct pt_regs *regs)
+{
+ struct ucontext __user *uc = (struct ucontext __user *)regs->gpr[1];
+ sigset_t set;
+
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+ if (!access_ok(VERIFY_READ, uc, sizeof(*uc)))
+ goto badframe;
+
+ if (__copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
+ goto badframe;
+ restore_sigmask(&set);
+ if (restore_sigcontext(regs, NULL, 1, &uc->uc_mcontext))
+ goto badframe;
+
+ /* do_sigaltstack expects a __user pointer and won't modify
+ * what's in there anyway
+ */
+ do_sigaltstack(&uc->uc_stack, NULL, regs->gpr[1]);
+
+ return regs->result;
+
+badframe:
+#if DEBUG_SIG
+ printk("badframe in sys_rt_sigreturn, regs=%p uc=%p &uc->uc_mcontext=%p\n",
+ regs, uc, &uc->uc_mcontext);
+#endif
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ /* Handler is *really* a pointer to the function descriptor for
+ * the signal routine. The first entry in the function
+ * descriptor is the entry address of signal and the second
+ * entry is the TOC value we need to use.
+ */
+ func_descr_t __user *funct_desc_ptr;
+ struct rt_sigframe __user *frame;
+ unsigned long newsp = 0;
+ long err = 0;
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ goto badframe;
+
+ err |= __put_user(&frame->info, &frame->pinfo);
+ err |= __put_user(&frame->uc, &frame->puc);
+ err |= copy_siginfo_to_user(&frame->info, info);
+ if (err)
+ goto badframe;
+
+ /* Create the ucontext. */
+ err |= __put_user(0, &frame->uc.uc_flags);
+ err |= __put_user(0, &frame->uc.uc_link);
+ err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
+ err |= __put_user(sas_ss_flags(regs->gpr[1]),
+ &frame->uc.uc_stack.ss_flags);
+ err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, signr, NULL,
+ (unsigned long)ka->sa.sa_handler);
+ err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+ if (err)
+ goto badframe;
+
+ /* Set up to return from userspace. */
+ if (vdso64_rt_sigtramp && current->thread.vdso_base) {
+ regs->link = current->thread.vdso_base + vdso64_rt_sigtramp;
+ } else {
+ err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]);
+ if (err)
+ goto badframe;
+ regs->link = (unsigned long) &frame->tramp[0];
+ }
+ funct_desc_ptr = (func_descr_t __user *) ka->sa.sa_handler;
+
+ /* Allocate a dummy caller frame for the signal handler. */
+ newsp = (unsigned long)frame - __SIGNAL_FRAMESIZE;
+ err |= put_user(regs->gpr[1], (unsigned long __user *)newsp);
+
+ /* Set up "regs" so we "return" to the signal handler. */
+ err |= get_user(regs->nip, &funct_desc_ptr->entry);
+ regs->gpr[1] = newsp;
+ err |= get_user(regs->gpr[2], &funct_desc_ptr->toc);
+ regs->gpr[3] = signr;
+ regs->result = 0;
+ if (ka->sa.sa_flags & SA_SIGINFO) {
+ err |= get_user(regs->gpr[4], (unsigned long __user *)&frame->pinfo);
+ err |= get_user(regs->gpr[5], (unsigned long __user *)&frame->puc);
+ regs->gpr[6] = (unsigned long) frame;
+ } else {
+ regs->gpr[4] = (unsigned long)&frame->uc.uc_mcontext;
+ }
+ if (err)
+ goto badframe;
+
+ if (test_thread_flag(TIF_SINGLESTEP))
+ ptrace_notify(SIGTRAP);
+
+ return 1;
+
+badframe:
+#if DEBUG_SIG
+ printk("badframe in setup_rt_frame, regs=%p frame=%p newsp=%lx\n",
+ regs, frame, newsp);
+#endif
+ force_sigsegv(signr, current);
+ return 0;
+}
+
+
+/*
+ * OK, we're invoking a handler
+ */
+static int handle_signal(unsigned long sig, struct k_sigaction *ka,
+ siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
+{
+ int ret;
+
+ /* Set up Signal Frame */
+ ret = setup_rt_frame(sig, ka, info, oldset, regs);
+
+ if (ret) {
+ spin_lock_irq(&current->sighand->siglock);
+ sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
+ sigaddset(&current->blocked,sig);
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+ }
+
+ return ret;
+}
+
+static inline void syscall_restart(struct pt_regs *regs, struct k_sigaction *ka)
+{
+ switch ((int)regs->result) {
+ case -ERESTART_RESTARTBLOCK:
+ case -ERESTARTNOHAND:
+ /* ERESTARTNOHAND means that the syscall should only be
+ * restarted if there was no handler for the signal, and since
+ * we only get here if there is a handler, we dont restart.
+ */
+ regs->result = -EINTR;
+ break;
+ case -ERESTARTSYS:
+ /* ERESTARTSYS means to restart the syscall if there is no
+ * handler or the handler was registered with SA_RESTART
+ */
+ if (!(ka->sa.sa_flags & SA_RESTART)) {
+ regs->result = -EINTR;
+ break;
+ }
+ /* fallthrough */
+ case -ERESTARTNOINTR:
+ /* ERESTARTNOINTR means that the syscall should be
+ * called again after the signal handler returns.
+ */
+ regs->gpr[3] = regs->orig_gpr3;
+ regs->nip -= 4;
+ regs->result = 0;
+ break;
+ }
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+int do_signal(sigset_t *oldset, struct pt_regs *regs)
+{
+ siginfo_t info;
+ int signr;
+ struct k_sigaction ka;
+
+ /*
+ * If the current thread is 32 bit - invoke the
+ * 32 bit signal handling code
+ */
+ if (test_thread_flag(TIF_32BIT))
+ return do_signal32(oldset, regs);
+
+ if (!oldset)
+ oldset = &current->blocked;
+
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ if (signr > 0) {
+ /* Whee! Actually deliver the signal. */
+ if (TRAP(regs) == 0x0C00)
+ syscall_restart(regs, &ka);
+
+ /*
+ * Reenable the DABR before delivering the signal to
+ * user space. The DABR will have been cleared if it
+ * triggered inside the kernel.
+ */
+ if (current->thread.dabr)
+ set_dabr(current->thread.dabr);
+
+ return handle_signal(signr, &ka, &info, oldset, regs);
+ }
+
+ if (TRAP(regs) == 0x0C00) { /* System Call! */
+ if ((int)regs->result == -ERESTARTNOHAND ||
+ (int)regs->result == -ERESTARTSYS ||
+ (int)regs->result == -ERESTARTNOINTR) {
+ regs->gpr[3] = regs->orig_gpr3;
+ regs->nip -= 4; /* Back up & retry system call */
+ regs->result = 0;
+ } else if ((int)regs->result == -ERESTART_RESTARTBLOCK) {
+ regs->gpr[0] = __NR_restart_syscall;
+ regs->nip -= 4;
+ regs->result = 0;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(do_signal);