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authorRalf Baechle <ralf@linux-mips.org>2005-07-14 11:57:16 -0400
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 14:31:53 -0400
commite01402b115cccb6357f956649487aca2c6f7fbba (patch)
tree256e14f8d2762de98b992219b1a47e8f56b4b0da /arch/mips/mips-boards/generic/time.c
parent86071b637db7baf599df26fdf820dce2fc55ca9f (diff)
More AP / SP bits for the 34K, the Malta bits and things. Still wants
a little polishing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mips-boards/generic/time.c')
-rw-r--r--arch/mips/mips-boards/generic/time.c49
1 files changed, 32 insertions, 17 deletions
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index 16315444dd5..3a6f1428b2c 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -31,22 +31,21 @@
31 31
32#include <asm/mipsregs.h> 32#include <asm/mipsregs.h>
33#include <asm/ptrace.h> 33#include <asm/ptrace.h>
34#include <asm/hardirq.h>
35#include <asm/irq.h>
34#include <asm/div64.h> 36#include <asm/div64.h>
35#include <asm/cpu.h> 37#include <asm/cpu.h>
36#include <asm/time.h> 38#include <asm/time.h>
37#include <asm/mc146818-time.h> 39#include <asm/mc146818-time.h>
40#include <asm/msc01_ic.h>
38 41
39#include <asm/mips-boards/generic.h> 42#include <asm/mips-boards/generic.h>
40#include <asm/mips-boards/prom.h> 43#include <asm/mips-boards/prom.h>
44#include <asm/mips-boards/maltaint.h>
45#include <asm/mc146818-time.h>
41 46
42unsigned long cpu_khz; 47unsigned long cpu_khz;
43 48
44#if defined(CONFIG_MIPS_SEAD)
45#define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ5)
46#else
47#define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5)
48#endif
49
50#if defined(CONFIG_MIPS_ATLAS) 49#if defined(CONFIG_MIPS_ATLAS)
51static char display_string[] = " LINUX ON ATLAS "; 50static char display_string[] = " LINUX ON ATLAS ";
52#endif 51#endif
@@ -59,20 +58,27 @@ static char display_string[] = " LINUX ON SEAD ";
59static unsigned int display_count = 0; 58static unsigned int display_count = 0;
60#define MAX_DISPLAY_COUNT (sizeof(display_string) - 8) 59#define MAX_DISPLAY_COUNT (sizeof(display_string) - 8)
61 60
62#define MIPS_CPU_TIMER_IRQ (NR_IRQS-1)
63
64static unsigned int timer_tick_count=0; 61static unsigned int timer_tick_count=0;
62static int mips_cpu_timer_irq;
65 63
66void mips_timer_interrupt(struct pt_regs *regs) 64static void mips_timer_dispatch (struct pt_regs *regs)
67{ 65{
66 do_IRQ (mips_cpu_timer_irq, regs);
67}
68
69irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
70{
71 irqreturn_t r;
72
73 r = timer_interrupt(irq, dev_id, regs);
74
68 if ((timer_tick_count++ % HZ) == 0) { 75 if ((timer_tick_count++ % HZ) == 0) {
69 mips_display_message(&display_string[display_count++]); 76 mips_display_message(&display_string[display_count++]);
70 if (display_count == MAX_DISPLAY_COUNT) 77 if (display_count == MAX_DISPLAY_COUNT)
71 display_count = 0; 78 display_count = 0;
72
73 } 79 }
74 80
75 ll_timer_interrupt(MIPS_CPU_TIMER_IRQ, regs); 81 return r;
76} 82}
77 83
78/* 84/*
@@ -140,10 +146,8 @@ void __init mips_time_init(void)
140 146
141 local_irq_save(flags); 147 local_irq_save(flags);
142 148
143#if defined(CONFIG_MIPS_ATLAS) || defined(CONFIG_MIPS_MALTA)
144 /* Set Data mode - binary. */ 149 /* Set Data mode - binary. */
145 CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL); 150 CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
146#endif
147 151
148 est_freq = estimate_cpu_frequency (); 152 est_freq = estimate_cpu_frequency ();
149 153
@@ -157,11 +161,22 @@ void __init mips_time_init(void)
157 161
158void __init mips_timer_setup(struct irqaction *irq) 162void __init mips_timer_setup(struct irqaction *irq)
159{ 163{
164 if (cpu_has_veic) {
165 set_vi_handler (MSC01E_INT_CPUCTR, mips_timer_dispatch);
166 mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR;
167 }
168 else {
169 if (cpu_has_vint)
170 set_vi_handler (MIPSCPU_INT_CPUCTR, mips_timer_dispatch);
171 mips_cpu_timer_irq = MIPSCPU_INT_BASE + MIPSCPU_INT_CPUCTR;
172 }
173
174
160 /* we are using the cpu counter for timer interrupts */ 175 /* we are using the cpu counter for timer interrupts */
161 irq->handler = no_action; /* we use our own handler */ 176 irq->handler = mips_timer_interrupt; /* we use our own handler */
162 setup_irq(MIPS_CPU_TIMER_IRQ, irq); 177 setup_irq(mips_cpu_timer_irq, irq);
178
163 179
164 /* to generate the first timer interrupt */ 180 /* to generate the first timer interrupt */
165 write_c0_compare (read_c0_count() + mips_hpt_frequency/HZ); 181 write_c0_compare (read_c0_count() + mips_hpt_frequency/HZ);
166 set_c0_status(ALLINTS);
167} 182}