1 files changed, 120 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/iseries/proc.c b/arch/powerpc/platforms/iseries/proc.c
new file mode 100644
index 00000000000..06763682db4
--- /dev/null
+++ b/arch/powerpc/platforms/iseries/proc.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2001  Kyle A. Lucke IBM Corporation
+ * Copyright (C) 2001 Mike Corrigan & 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/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/param.h>                /* for HZ */
+#include <asm/paca.h>
+#include <asm/processor.h>
+#include <asm/time.h>
+#include <asm/lppaca.h>
+#include <asm/firmware.h>
+#include <asm/iseries/hv_call_xm.h>
+
+#include "processor_vpd.h"
+#include "main_store.h"
+
+static int __init iseries_proc_create(void)
+{
+        struct proc_dir_entry *e;
+
+        if (!firmware_has_feature(FW_FEATURE_ISERIES))
+                return 0;
+
+        e = proc_mkdir("iSeries", 0);
+        if (!e)
+                return 1;
+
+        return 0;
+}
+core_initcall(iseries_proc_create);
+
+static unsigned long startTitan = 0;
+static unsigned long startTb = 0;
+
+static int proc_titantod_show(struct seq_file *m, void *v)
+{
+        unsigned long tb0, titan_tod;
+
+        tb0 = get_tb();
+        titan_tod = HvCallXm_loadTod();
+
+        seq_printf(m, "Titan\n" );
+        seq_printf(m, "  time base =          %016lx\n", tb0);
+        seq_printf(m, "  titan tod =          %016lx\n", titan_tod);
+        seq_printf(m, "  xProcFreq =          %016x\n",
+                   xIoHriProcessorVpd[0].xProcFreq);
+        seq_printf(m, "  xTimeBaseFreq =      %016x\n",
+                   xIoHriProcessorVpd[0].xTimeBaseFreq);
+        seq_printf(m, "  tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy);
+        seq_printf(m, "  tb_ticks_per_usec  = %lu\n", tb_ticks_per_usec);
+
+        if (!startTitan) {
+                startTitan = titan_tod;
+                startTb = tb0;
+        } else {
+                unsigned long titan_usec = (titan_tod - startTitan) >> 12;
+                unsigned long tb_ticks = (tb0 - startTb);
+                unsigned long titan_jiffies = titan_usec / (1000000/HZ);
+                unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
+                unsigned long titan_jiff_rem_usec =
+                        titan_usec - titan_jiff_usec;
+                unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
+                unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
+                unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
+                unsigned long tb_jiff_rem_usec =
+                        tb_jiff_rem_ticks / tb_ticks_per_usec;
+                unsigned long new_tb_ticks_per_jiffy =
+                        (tb_ticks * (1000000/HZ))/titan_usec;
+
+                seq_printf(m, "  titan elapsed = %lu uSec\n", titan_usec);
+                seq_printf(m, "  tb elapsed    = %lu ticks\n", tb_ticks);
+                seq_printf(m, "  titan jiffies = %lu.%04lu\n", titan_jiffies,
+                           titan_jiff_rem_usec);
+                seq_printf(m, "  tb jiffies    = %lu.%04lu\n", tb_jiffies,
+                           tb_jiff_rem_usec);
+                seq_printf(m, "  new tb_ticks_per_jiffy = %lu\n",
+                           new_tb_ticks_per_jiffy);
+        }
+
+        return 0;
+}
+
+static int proc_titantod_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, proc_titantod_show, NULL);
+}
+
+static const struct file_operations proc_titantod_operations = {
+        .open           = proc_titantod_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+static int __init iseries_proc_init(void)
+{
+        if (!firmware_has_feature(FW_FEATURE_ISERIES))
+                return 0;
+
+        proc_create("iSeries/titanTod", S_IFREG|S_IRUGO, NULL,
+                    &proc_titantod_operations);
+        return 0;
+}
+__initcall(iseries_proc_init);