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authorRalf Baechle <ralf@linux-mips.org>2007-05-16 17:54:08 +0200
committerRalf Baechle <ralf@linux-mips.org>2007-06-06 19:34:30 +0100
commit79894c7b47f78decaa3511f1d6646aa06e2c6bed (patch)
treebd09192fbf3aa9268e3cb68474bc0cee55d35c3f /arch/mips
parent5ecd3100e695228ac5e0ce0e325e252c0f11806f (diff)
downloadop-kernel-dev-79894c7b47f78decaa3511f1d6646aa06e2c6bed.zip
op-kernel-dev-79894c7b47f78decaa3511f1d6646aa06e2c6bed.tar.gz
[MIPS] Atlas, Malta, SEAD: Remove scroll from interrupt handler.
Aside of being handy for debugging this has never been a particularly good idea but is now getting in the way of dyntick / tickless kernels and general cleanups. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/mips-boards/atlas/atlas_setup.c2
-rw-r--r--arch/mips/mips-boards/generic/display.c24
-rw-r--r--arch/mips/mips-boards/generic/time.c31
-rw-r--r--arch/mips/mips-boards/malta/malta_setup.c6
-rw-r--r--arch/mips/mips-boards/sead/sead_setup.c2
5 files changed, 36 insertions, 29 deletions
diff --git a/arch/mips/mips-boards/atlas/atlas_setup.c b/arch/mips/mips-boards/atlas/atlas_setup.c
index 0c6b0ce..1cc6ebb 100644
--- a/arch/mips/mips-boards/atlas/atlas_setup.c
+++ b/arch/mips/mips-boards/atlas/atlas_setup.c
@@ -48,6 +48,8 @@ const char *get_system_type(void)
return "MIPS Atlas";
}
+const char display_string[] = " LINUX ON ATLAS ";
+
void __init plat_mem_setup(void)
{
mips_pcibios_init();
diff --git a/arch/mips/mips-boards/generic/display.c b/arch/mips/mips-boards/generic/display.c
index 548dbe5..5d60005 100644
--- a/arch/mips/mips-boards/generic/display.c
+++ b/arch/mips/mips-boards/generic/display.c
@@ -19,9 +19,14 @@
*/
#include <linux/compiler.h>
+#include <linux/timer.h>
#include <asm/io.h>
#include <asm/mips-boards/generic.h>
+extern const char display_string[];
+static unsigned int display_count;
+static unsigned int max_display_count;
+
void mips_display_message(const char *str)
{
static unsigned int __iomem *display = NULL;
@@ -37,3 +42,22 @@ void mips_display_message(const char *str)
writel(' ', display + i);
}
}
+
+static void scroll_display_message(unsigned long data);
+static DEFINE_TIMER(mips_scroll_timer, scroll_display_message, HZ, 0);
+
+static void scroll_display_message(unsigned long data)
+{
+ mips_display_message(&display_string[display_count++]);
+ if (display_count == max_display_count)
+ display_count = 0;
+
+ mod_timer(&mips_scroll_timer, jiffies + HZ);
+}
+
+void mips_scroll_message(void)
+{
+ del_timer_sync(&mips_scroll_timer);
+ max_display_count = strlen(display_string) + 1 - 8;
+ mod_timer(&mips_scroll_timer, jiffies + 1);
+}
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index df2a2bd..37735bf 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -53,37 +53,11 @@
unsigned long cpu_khz;
-#if defined(CONFIG_MIPS_ATLAS)
-static char display_string[] = " LINUX ON ATLAS ";
-#endif
-#if defined(CONFIG_MIPS_MALTA)
-#if defined(CONFIG_MIPS_MT_SMTC)
-static char display_string[] = " SMTC LINUX ON MALTA ";
-#else
-static char display_string[] = " LINUX ON MALTA ";
-#endif /* CONFIG_MIPS_MT_SMTC */
-#endif
-#if defined(CONFIG_MIPS_SEAD)
-static char display_string[] = " LINUX ON SEAD ";
-#endif
-static unsigned int display_count;
-#define MAX_DISPLAY_COUNT (sizeof(display_string) - 8)
-
#define CPUCTR_IMASKBIT (0x100 << MIPSCPU_INT_CPUCTR)
-static unsigned int timer_tick_count;
static int mips_cpu_timer_irq;
extern void smtc_timer_broadcast(int);
-static inline void scroll_display_message(void)
-{
- if ((timer_tick_count++ % HZ) == 0) {
- mips_display_message(&display_string[display_count++]);
- if (display_count == MAX_DISPLAY_COUNT)
- display_count = 0;
- }
-}
-
static void mips_timer_dispatch(void)
{
do_IRQ(mips_cpu_timer_irq);
@@ -143,7 +117,6 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id)
if (cpu_data[cpu].vpe_id == 0) {
timer_interrupt(irq, NULL);
smtc_timer_broadcast(cpu_data[cpu].vpe_id);
- scroll_display_message();
} else {
write_c0_compare(read_c0_count() +
(mips_hpt_frequency/HZ));
@@ -167,8 +140,6 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id)
/* we keep interrupt disabled all the time */
if (!r2 || (read_c0_cause() & (1 << 30)))
timer_interrupt(irq, NULL);
-
- scroll_display_message();
} else {
/* Everyone else needs to reset the timer int here as
ll_local_timer_interrupt doesn't */
@@ -262,6 +233,8 @@ void __init mips_time_init(void)
(est_freq%1000000)*100/1000000);
cpu_khz = est_freq / 1000;
+
+ mips_scroll_message();
}
void __init plat_timer_setup(struct irqaction *irq)
diff --git a/arch/mips/mips-boards/malta/malta_setup.c b/arch/mips/mips-boards/malta/malta_setup.c
index 7873932..c14b7bf 100644
--- a/arch/mips/mips-boards/malta/malta_setup.c
+++ b/arch/mips/mips-boards/malta/malta_setup.c
@@ -56,6 +56,12 @@ const char *get_system_type(void)
return "MIPS Malta";
}
+#if defined(CONFIG_MIPS_MT_SMTC)
+const char display_string[] = " SMTC LINUX ON MALTA ";
+#else
+const char display_string[] = " LINUX ON MALTA ";
+#endif /* CONFIG_MIPS_MT_SMTC */
+
#ifdef CONFIG_BLK_DEV_FD
void __init fd_activate(void)
{
diff --git a/arch/mips/mips-boards/sead/sead_setup.c b/arch/mips/mips-boards/sead/sead_setup.c
index a189dec..811aba1 100644
--- a/arch/mips/mips-boards/sead/sead_setup.c
+++ b/arch/mips/mips-boards/sead/sead_setup.c
@@ -43,6 +43,8 @@ const char *get_system_type(void)
return "MIPS SEAD";
}
+const char display_string[] = " LINUX ON SEAD ";
+
void __init plat_mem_setup(void)
{
ioport_resource.end = 0x7fffffff;
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