From 703243a044c8b7d5c52fdf67e4c1aacf1d6c4d76 Mon Sep 17 00:00:00 2001
From: balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Wed, 12 Dec 2007 01:11:42 +0000
Subject: [PATCH] Adds interrupt support to the sh specific timer code (Magnus
 Damm).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3812 c046a42c-6fe2-441c-8c8c-71466251a162
---
 hw/sh.h       |  7 ++++++-
 hw/sh7750.c   | 12 +++++++++---
 hw/sh_timer.c | 32 ++++++++++++++++++--------------
 3 files changed, 33 insertions(+), 18 deletions(-)

diff --git a/hw/sh.h b/hw/sh.h
index 57a2485..7df3164 100644
--- a/hw/sh.h
+++ b/hw/sh.h
@@ -2,6 +2,8 @@
 #define QEMU_SH_H
 /* Definitions for SH board emulation.  */
 
+#include "sh_intc.h"
+
 /* sh7750.c */
 struct SH7750State;
 
@@ -25,7 +27,10 @@ int sh7750_register_io_device(struct SH7750State *s,
 #define TMU012_FEAT_TOCR   (1 << 0)
 #define TMU012_FEAT_3CHAN  (1 << 1)
 #define TMU012_FEAT_EXTCLK (1 << 2)
-void tmu012_init(uint32_t base, int feat, uint32_t freq);
+void tmu012_init(target_phys_addr_t base, int feat, uint32_t freq,
+		 struct intc_source *ch0_irq, struct intc_source *ch1_irq,
+		 struct intc_source *ch2_irq0, struct intc_source *ch2_irq1);
+
 
 /* sh_serial.c */
 #define SH_SERIAL_FEAT_SCIF (1 << 0)
diff --git a/hw/sh7750.c b/hw/sh7750.c
index c670288..45a5c7f 100644
--- a/hw/sh7750.c
+++ b/hw/sh7750.c
@@ -559,8 +559,11 @@ SH7750State *sh7750_init(CPUSH4State * cpu)
 
     tmu012_init(0x1fd80000,
 		TMU012_FEAT_TOCR | TMU012_FEAT_3CHAN | TMU012_FEAT_EXTCLK,
-		s->periph_freq);
-
+		s->periph_freq,
+		sh_intc_source(&s->intc, TMU0),
+		sh_intc_source(&s->intc, TMU1),
+		sh_intc_source(&s->intc, TMU2_TUNI),
+		sh_intc_source(&s->intc, TMU2_TICPI));
 
     if (cpu_model & (SH_CPU_SH7750 | SH_CPU_SH7750S | SH_CPU_SH7751)) {
         sh_intc_register_sources(&s->intc, 
@@ -578,7 +581,10 @@ SH7750State *sh7750_init(CPUSH4State * cpu)
         sh_intc_register_sources(&s->intc, 
 				 _INTC_ARRAY(vectors_tmu34),
 				 NULL, 0);
-        tmu012_init(0x1e100000, 0, s->periph_freq);
+        tmu012_init(0x1e100000, 0, s->periph_freq,
+		    sh_intc_source(&s->intc, TMU3),
+		    sh_intc_source(&s->intc, TMU4),
+		    NULL, NULL);
     }
 
     if (cpu_model & (SH_CPU_SH7751_ALL)) {
diff --git a/hw/sh_timer.c b/hw/sh_timer.c
index 2247929..df265d2 100644
--- a/hw/sh_timer.c
+++ b/hw/sh_timer.c
@@ -33,23 +33,23 @@ typedef struct {
     uint32_t tcpr;
     int freq;
     int int_level;
+    int old_level;
     int feat;
     int enabled;
-    qemu_irq irq;
+    struct intc_source *irq;
 } sh_timer_state;
 
 /* Check all active timers, and schedule the next timer interrupt. */
 
 static void sh_timer_update(sh_timer_state *s)
 {
-#if 0 /* not yet */
-    /* Update interrupts.  */
-    if (s->int_level && (s->tcr & TIMER_TCR_UNIE)) {
-        qemu_irq_raise(s->irq);
-    } else {
-        qemu_irq_lower(s->irq);
-    }
-#endif
+    int new_level = s->int_level && (s->tcr & TIMER_TCR_UNIE);
+
+    if (new_level != s->old_level)
+      sh_intc_toggle_source(s->irq, 0, new_level ? 1 : -1);
+
+    s->old_level = s->int_level;
+    s->int_level = new_level;
 }
 
 static uint32_t sh_timer_read(void *opaque, target_phys_addr_t offset)
@@ -185,7 +185,7 @@ static void sh_timer_tick(void *opaque)
     sh_timer_update(s);
 }
 
-static void *sh_timer_init(uint32_t freq, int feat)
+static void *sh_timer_init(uint32_t freq, int feat, struct intc_source *irq)
 {
     sh_timer_state *s;
     QEMUBH *bh;
@@ -198,6 +198,7 @@ static void *sh_timer_init(uint32_t freq, int feat)
     s->tcpr = 0xdeadbeef;
     s->tcor = 0;
     s->enabled = 0;
+    s->irq = irq;
 
     bh = qemu_bh_new(sh_timer_tick, s);
     s->timer = ptimer_init(bh);
@@ -305,7 +306,9 @@ static CPUWriteMemoryFunc *tmu012_writefn[] = {
     tmu012_write
 };
 
-void tmu012_init(uint32_t base, int feat, uint32_t freq)
+void tmu012_init(target_phys_addr_t base, int feat, uint32_t freq,
+		 struct intc_source *ch0_irq, struct intc_source *ch1_irq,
+		 struct intc_source *ch2_irq0, struct intc_source *ch2_irq1)
 {
     int iomemtype;
     tmu012_state *s;
@@ -314,10 +317,11 @@ void tmu012_init(uint32_t base, int feat, uint32_t freq)
     s = (tmu012_state *)qemu_mallocz(sizeof(tmu012_state));
     s->base = base;
     s->feat = feat;
-    s->timer[0] = sh_timer_init(freq, timer_feat);
-    s->timer[1] = sh_timer_init(freq, timer_feat);
+    s->timer[0] = sh_timer_init(freq, timer_feat, ch0_irq);
+    s->timer[1] = sh_timer_init(freq, timer_feat, ch1_irq);
     if (feat & TMU012_FEAT_3CHAN)
-        s->timer[2] = sh_timer_init(freq, timer_feat | TIMER_FEAT_CAPT);
+        s->timer[2] = sh_timer_init(freq, timer_feat | TIMER_FEAT_CAPT,
+				    ch2_irq0); /* ch2_irq1 not supported */
     iomemtype = cpu_register_io_memory(0, tmu012_readfn,
                                        tmu012_writefn, s);
     cpu_register_physical_memory(base, 0x00001000, iomemtype);
-- 
2.7.4