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Diffstat (limited to 'arch/ppc64/kernel/mf.c')
-rw-r--r--arch/ppc64/kernel/mf.c86
1 files changed, 65 insertions, 21 deletions
diff --git a/arch/ppc64/kernel/mf.c b/arch/ppc64/kernel/mf.c
index 1bd52ece497..d98bebf7042 100644
--- a/arch/ppc64/kernel/mf.c
+++ b/arch/ppc64/kernel/mf.c
@@ -1,7 +1,7 @@
/*
* mf.c
* Copyright (C) 2001 Troy D. Armstrong IBM Corporation
- * Copyright (C) 2004 Stephen Rothwell IBM Corporation
+ * Copyright (C) 2004-2005 Stephen Rothwell IBM Corporation
*
* This modules exists as an interface between a Linux secondary partition
* running on an iSeries and the primary partition's Virtual Service
@@ -36,10 +36,11 @@
#include <asm/time.h>
#include <asm/uaccess.h>
+#include <asm/paca.h>
#include <asm/iSeries/vio.h>
#include <asm/iSeries/mf.h>
#include <asm/iSeries/HvLpConfig.h>
-#include <asm/iSeries/ItSpCommArea.h>
+#include <asm/iSeries/ItLpQueue.h>
/*
* This is the structure layout for the Machine Facilites LPAR event
@@ -696,36 +697,23 @@ static void get_rtc_time_complete(void *token, struct ce_msg_data *ce_msg)
complete(&rtc->com);
}
-int mf_get_rtc(struct rtc_time *tm)
+static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm)
{
- struct ce_msg_comp_data ce_complete;
- struct rtc_time_data rtc_data;
- int rc;
-
- memset(&ce_complete, 0, sizeof(ce_complete));
- memset(&rtc_data, 0, sizeof(rtc_data));
- init_completion(&rtc_data.com);
- ce_complete.handler = &get_rtc_time_complete;
- ce_complete.token = &rtc_data;
- rc = signal_ce_msg_simple(0x40, &ce_complete);
- if (rc)
- return rc;
- wait_for_completion(&rtc_data.com);
tm->tm_wday = 0;
tm->tm_yday = 0;
tm->tm_isdst = 0;
- if (rtc_data.rc) {
+ if (rc) {
tm->tm_sec = 0;
tm->tm_min = 0;
tm->tm_hour = 0;
tm->tm_mday = 15;
tm->tm_mon = 5;
tm->tm_year = 52;
- return rtc_data.rc;
+ return rc;
}
- if ((rtc_data.ce_msg.ce_msg[2] == 0xa9) ||
- (rtc_data.ce_msg.ce_msg[2] == 0xaf)) {
+ if ((ce_msg[2] == 0xa9) ||
+ (ce_msg[2] == 0xaf)) {
/* TOD clock is not set */
tm->tm_sec = 1;
tm->tm_min = 1;
@@ -736,7 +724,6 @@ int mf_get_rtc(struct rtc_time *tm)
mf_set_rtc(tm);
}
{
- u8 *ce_msg = rtc_data.ce_msg.ce_msg;
u8 year = ce_msg[5];
u8 sec = ce_msg[6];
u8 min = ce_msg[7];
@@ -765,6 +752,63 @@ int mf_get_rtc(struct rtc_time *tm)
return 0;
}
+int mf_get_rtc(struct rtc_time *tm)
+{
+ struct ce_msg_comp_data ce_complete;
+ struct rtc_time_data rtc_data;
+ int rc;
+
+ memset(&ce_complete, 0, sizeof(ce_complete));
+ memset(&rtc_data, 0, sizeof(rtc_data));
+ init_completion(&rtc_data.com);
+ ce_complete.handler = &get_rtc_time_complete;
+ ce_complete.token = &rtc_data;
+ rc = signal_ce_msg_simple(0x40, &ce_complete);
+ if (rc)
+ return rc;
+ wait_for_completion(&rtc_data.com);
+ return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
+}
+
+struct boot_rtc_time_data {
+ int busy;
+ struct ce_msg_data ce_msg;
+ int rc;
+};
+
+static void get_boot_rtc_time_complete(void *token, struct ce_msg_data *ce_msg)
+{
+ struct boot_rtc_time_data *rtc = token;
+
+ memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg));
+ rtc->rc = 0;
+ rtc->busy = 0;
+}
+
+int mf_get_boot_rtc(struct rtc_time *tm)
+{
+ struct ce_msg_comp_data ce_complete;
+ struct boot_rtc_time_data rtc_data;
+ int rc;
+
+ memset(&ce_complete, 0, sizeof(ce_complete));
+ memset(&rtc_data, 0, sizeof(rtc_data));
+ rtc_data.busy = 1;
+ ce_complete.handler = &get_boot_rtc_time_complete;
+ ce_complete.token = &rtc_data;
+ rc = signal_ce_msg_simple(0x40, &ce_complete);
+ if (rc)
+ return rc;
+ /* We need to poll here as we are not yet taking interrupts */
+ while (rtc_data.busy) {
+ extern unsigned long lpevent_count;
+ struct ItLpQueue *lpq = get_paca()->lpqueue_ptr;
+ if (lpq && ItLpQueue_isLpIntPending(lpq))
+ lpevent_count += ItLpQueue_process(lpq, NULL);
+ }
+ return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
+}
+
int mf_set_rtc(struct rtc_time *tm)
{
char ce_time[12];