1 files changed, 0 insertions, 408 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/platforms/pseries/ras.c b/ANDROID_3.4.5/arch/powerpc/platforms/pseries/ras.c
deleted file mode 100644
index c4dfccd3..00000000
--- a/ANDROID_3.4.5/arch/powerpc/platforms/pseries/ras.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * Copyright (C) 2001 Dave Engebretsen IBM Corporation
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/of.h>
-#include <linux/fs.h>
-#include <linux/reboot.h>
-
-#include <asm/machdep.h>
-#include <asm/rtas.h>
-#include <asm/firmware.h>
-
-#include "pseries.h"
-
-static unsigned char ras_log_buf[RTAS_ERROR_LOG_MAX];
-static DEFINE_SPINLOCK(ras_log_buf_lock);
-
-static char global_mce_data_buf[RTAS_ERROR_LOG_MAX];
-static DEFINE_PER_CPU(__u64, mce_data_buf);
-
-static int ras_check_exception_token;
-
-#define EPOW_SENSOR_TOKEN	9
-#define EPOW_SENSOR_INDEX	0
-
-static irqreturn_t ras_epow_interrupt(int irq, void *dev_id);
-static irqreturn_t ras_error_interrupt(int irq, void *dev_id);
-
-
-/*
- * Initialize handlers for the set of interrupts caused by hardware errors
- * and power system events.
- */
-static int __init init_ras_IRQ(void)
-{
-	struct device_node *np;
-
-	ras_check_exception_token = rtas_token("check-exception");
-
-	/* Internal Errors */
-	np = of_find_node_by_path("/event-sources/internal-errors");
-	if (np != NULL) {
-		request_event_sources_irqs(np, ras_error_interrupt,
-					   "RAS_ERROR");
-		of_node_put(np);
-	}
-
-	/* EPOW Events */
-	np = of_find_node_by_path("/event-sources/epow-events");
-	if (np != NULL) {
-		request_event_sources_irqs(np, ras_epow_interrupt, "RAS_EPOW");
-		of_node_put(np);
-	}
-
-	return 0;
-}
-subsys_initcall(init_ras_IRQ);
-
-#define EPOW_SHUTDOWN_NORMAL				1
-#define EPOW_SHUTDOWN_ON_UPS				2
-#define EPOW_SHUTDOWN_LOSS_OF_CRITICAL_FUNCTIONS	3
-#define EPOW_SHUTDOWN_AMBIENT_TEMPERATURE_TOO_HIGH	4
-
-static void handle_system_shutdown(char event_modifier)
-{
-	switch (event_modifier) {
-	case EPOW_SHUTDOWN_NORMAL:
-		pr_emerg("Firmware initiated power off");
-		orderly_poweroff(1);
-		break;
-
-	case EPOW_SHUTDOWN_ON_UPS:
-		pr_emerg("Loss of power reported by firmware, system is "
-			"running on UPS/battery");
-		break;
-
-	case EPOW_SHUTDOWN_LOSS_OF_CRITICAL_FUNCTIONS:
-		pr_emerg("Loss of system critical functions reported by "
-			"firmware");
-		pr_emerg("Check RTAS error log for details");
-		orderly_poweroff(1);
-		break;
-
-	case EPOW_SHUTDOWN_AMBIENT_TEMPERATURE_TOO_HIGH:
-		pr_emerg("Ambient temperature too high reported by firmware");
-		pr_emerg("Check RTAS error log for details");
-		orderly_poweroff(1);
-		break;
-
-	default:
-		pr_err("Unknown power/cooling shutdown event (modifier %d)",
-			event_modifier);
-	}
-}
-
-struct epow_errorlog {
-	unsigned char sensor_value;
-	unsigned char event_modifier;
-	unsigned char extended_modifier;
-	unsigned char reserved;
-	unsigned char platform_reason;
-};
-
-#define EPOW_RESET			0
-#define EPOW_WARN_COOLING		1
-#define EPOW_WARN_POWER			2
-#define EPOW_SYSTEM_SHUTDOWN		3
-#define EPOW_SYSTEM_HALT		4
-#define EPOW_MAIN_ENCLOSURE		5
-#define EPOW_POWER_OFF			7
-
-void rtas_parse_epow_errlog(struct rtas_error_log *log)
-{
-	struct pseries_errorlog *pseries_log;
-	struct epow_errorlog *epow_log;
-	char action_code;
-	char modifier;
-
-	pseries_log = get_pseries_errorlog(log, PSERIES_ELOG_SECT_ID_EPOW);
-	if (pseries_log == NULL)
-		return;
-
-	epow_log = (struct epow_errorlog *)pseries_log->data;
-	action_code = epow_log->sensor_value & 0xF;	/* bottom 4 bits */
-	modifier = epow_log->event_modifier & 0xF;	/* bottom 4 bits */
-
-	switch (action_code) {
-	case EPOW_RESET:
-		pr_err("Non critical power or cooling issue cleared");
-		break;
-
-	case EPOW_WARN_COOLING:
-		pr_err("Non critical cooling issue reported by firmware");
-		pr_err("Check RTAS error log for details");
-		break;
-
-	case EPOW_WARN_POWER:
-		pr_err("Non critical power issue reported by firmware");
-		pr_err("Check RTAS error log for details");
-		break;
-
-	case EPOW_SYSTEM_SHUTDOWN:
-		handle_system_shutdown(epow_log->event_modifier);
-		break;
-
-	case EPOW_SYSTEM_HALT:
-		pr_emerg("Firmware initiated power off");
-		orderly_poweroff(1);
-		break;
-
-	case EPOW_MAIN_ENCLOSURE:
-	case EPOW_POWER_OFF:
-		pr_emerg("Critical power/cooling issue reported by firmware");
-		pr_emerg("Check RTAS error log for details");
-		pr_emerg("Immediate power off");
-		emergency_sync();
-		kernel_power_off();
-		break;
-
-	default:
-		pr_err("Unknown power/cooling event (action code %d)",
-			action_code);
-	}
-}
-
-/* Handle environmental and power warning (EPOW) interrupts. */
-static irqreturn_t ras_epow_interrupt(int irq, void *dev_id)
-{
-	int status;
-	int state;
-	int critical;
-
-	status = rtas_get_sensor(EPOW_SENSOR_TOKEN, EPOW_SENSOR_INDEX, &state);
-
-	if (state > 3)
-		critical = 1;		/* Time Critical */
-	else
-		critical = 0;
-
-	spin_lock(&ras_log_buf_lock);
-
-	status = rtas_call(ras_check_exception_token, 6, 1, NULL,
-			   RTAS_VECTOR_EXTERNAL_INTERRUPT,
-			   virq_to_hw(irq),
-			   RTAS_EPOW_WARNING,
-			   critical, __pa(&ras_log_buf),
-				rtas_get_error_log_max());
-
-	log_error(ras_log_buf, ERR_TYPE_RTAS_LOG, 0);
-
-	rtas_parse_epow_errlog((struct rtas_error_log *)ras_log_buf);
-
-	spin_unlock(&ras_log_buf_lock);
-	return IRQ_HANDLED;
-}
-
-/*
- * Handle hardware error interrupts.
- *
- * RTAS check-exception is called to collect data on the exception.  If
- * the error is deemed recoverable, we log a warning and return.
- * For nonrecoverable errors, an error is logged and we stop all processing
- * as quickly as possible in order to prevent propagation of the failure.
- */
-static irqreturn_t ras_error_interrupt(int irq, void *dev_id)
-{
-	struct rtas_error_log *rtas_elog;
-	int status;
-	int fatal;
-
-	spin_lock(&ras_log_buf_lock);
-
-	status = rtas_call(ras_check_exception_token, 6, 1, NULL,
-			   RTAS_VECTOR_EXTERNAL_INTERRUPT,
-			   virq_to_hw(irq),
-			   RTAS_INTERNAL_ERROR, 1 /* Time Critical */,
-			   __pa(&ras_log_buf),
-				rtas_get_error_log_max());
-
-	rtas_elog = (struct rtas_error_log *)ras_log_buf;
-
-	if ((status == 0) && (rtas_elog->severity >= RTAS_SEVERITY_ERROR_SYNC))
-		fatal = 1;
-	else
-		fatal = 0;
-
-	/* format and print the extended information */
-	log_error(ras_log_buf, ERR_TYPE_RTAS_LOG, fatal);
-
-	if (fatal) {
-		pr_emerg("Fatal hardware error reported by firmware");
-		pr_emerg("Check RTAS error log for details");
-		pr_emerg("Immediate power off");
-		emergency_sync();
-		kernel_power_off();
-	} else {
-		pr_err("Recoverable hardware error reported by firmware");
-	}
-
-	spin_unlock(&ras_log_buf_lock);
-	return IRQ_HANDLED;
-}
-
-/*
- * Some versions of FWNMI place the buffer inside the 4kB page starting at
- * 0x7000. Other versions place it inside the rtas buffer. We check both.
- */
-#define VALID_FWNMI_BUFFER(A) \
-	((((A) >= 0x7000) && ((A) < 0x7ff0)) || \
-	(((A) >= rtas.base) && ((A) < (rtas.base + rtas.size - 16))))
-
-/*
- * Get the error information for errors coming through the
- * FWNMI vectors.  The pt_regs' r3 will be updated to reflect
- * the actual r3 if possible, and a ptr to the error log entry
- * will be returned if found.
- *
- * If the RTAS error is not of the extended type, then we put it in a per
- * cpu 64bit buffer. If it is the extended type we use global_mce_data_buf.
- *
- * The global_mce_data_buf does not have any locks or protection around it,
- * if a second machine check comes in, or a system reset is done
- * before we have logged the error, then we will get corruption in the
- * error log.  This is preferable over holding off on calling
- * ibm,nmi-interlock which would result in us checkstopping if a
- * second machine check did come in.
- */
-static struct rtas_error_log *fwnmi_get_errinfo(struct pt_regs *regs)
-{
-	unsigned long *savep;
-	struct rtas_error_log *h, *errhdr = NULL;
-
-	if (!VALID_FWNMI_BUFFER(regs->gpr[3])) {
-		printk(KERN_ERR "FWNMI: corrupt r3 0x%016lx\n", regs->gpr[3]);
-		return NULL;
-	}
-
-	savep = __va(regs->gpr[3]);
-	regs->gpr[3] = savep[0];	/* restore original r3 */
-
-	/* If it isn't an extended log we can use the per cpu 64bit buffer */
-	h = (struct rtas_error_log *)&savep[1];
-	if (!h->extended) {
-		memcpy(&__get_cpu_var(mce_data_buf), h, sizeof(__u64));
-		errhdr = (struct rtas_error_log *)&__get_cpu_var(mce_data_buf);
-	} else {
-		int len;
-
-		len = max_t(int, 8+h->extended_log_length, RTAS_ERROR_LOG_MAX);
-		memset(global_mce_data_buf, 0, RTAS_ERROR_LOG_MAX);
-		memcpy(global_mce_data_buf, h, len);
-		errhdr = (struct rtas_error_log *)global_mce_data_buf;
-	}
-
-	return errhdr;
-}
-
-/* Call this when done with the data returned by FWNMI_get_errinfo.
- * It will release the saved data area for other CPUs in the
- * partition to receive FWNMI errors.
- */
-static void fwnmi_release_errinfo(void)
-{
-	int ret = rtas_call(rtas_token("ibm,nmi-interlock"), 0, 1, NULL);
-	if (ret != 0)
-		printk(KERN_ERR "FWNMI: nmi-interlock failed: %d\n", ret);
-}
-
-int pSeries_system_reset_exception(struct pt_regs *regs)
-{
-	if (fwnmi_active) {
-		struct rtas_error_log *errhdr = fwnmi_get_errinfo(regs);
-		if (errhdr) {
-			/* XXX Should look at FWNMI information */
-		}
-		fwnmi_release_errinfo();
-	}
-	return 0; /* need to perform reset */
-}
-
-/*
- * See if we can recover from a machine check exception.
- * This is only called on power4 (or above) and only via
- * the Firmware Non-Maskable Interrupts (fwnmi) handler
- * which provides the error analysis for us.
- *
- * Return 1 if corrected (or delivered a signal).
- * Return 0 if there is nothing we can do.
- */
-static int recover_mce(struct pt_regs *regs, struct rtas_error_log *err)
-{
-	int recovered = 0;
-
-	if (!(regs->msr & MSR_RI)) {
-		/* If MSR_RI isn't set, we cannot recover */
-		recovered = 0;
-
-	} else if (err->disposition == RTAS_DISP_FULLY_RECOVERED) {
-		/* Platform corrected itself */
-		recovered = 1;
-
-	} else if (err->disposition == RTAS_DISP_LIMITED_RECOVERY) {
-		/* Platform corrected itself but could be degraded */
-		printk(KERN_ERR "MCE: limited recovery, system may "
-		       "be degraded\n");
-		recovered = 1;
-
-	} else if (user_mode(regs) && !is_global_init(current) &&
-		   err->severity == RTAS_SEVERITY_ERROR_SYNC) {
-
-		/*
-		 * If we received a synchronous error when in userspace
-		 * kill the task. Firmware may report details of the fail
-		 * asynchronously, so we can't rely on the target and type
-		 * fields being valid here.
-		 */
-		printk(KERN_ERR "MCE: uncorrectable error, killing task "
-		       "%s:%d\n", current->comm, current->pid);
-
-		_exception(SIGBUS, regs, BUS_MCEERR_AR, regs->nip);
-		recovered = 1;
-	}
-
-	log_error((char *)err, ERR_TYPE_RTAS_LOG, 0);
-
-	return recovered;
-}
-
-/*
- * Handle a machine check.
- *
- * Note that on Power 4 and beyond Firmware Non-Maskable Interrupts (fwnmi)
- * should be present.  If so the handler which called us tells us if the
- * error was recovered (never true if RI=0).
- *
- * On hardware prior to Power 4 these exceptions were asynchronous which
- * means we can't tell exactly where it occurred and so we can't recover.
- */
-int pSeries_machine_check_exception(struct pt_regs *regs)
-{
-	struct rtas_error_log *errp;
-
-	if (fwnmi_active) {
-		errp = fwnmi_get_errinfo(regs);
-		fwnmi_release_errinfo();
-		if (errp && recover_mce(regs, errp))
-			return 1;
-	}
-
-	return 0;
-}