SH4 serial controler improvements.

diff -ruwN a/hw/sh.h b/hw/sh.h
@@ -35,7 +35,12 @@
 /* sh_serial.c */
 #define SH_SERIAL_FEAT_SCIF (1 << 0)
 void sh_serial_init (target_phys_addr_t base, int feat,
-		     uint32_t freq, CharDriverState *chr);
+		     uint32_t freq, CharDriverState *chr,
+		     struct intc_source *eri_source,
+		     struct intc_source *rxi_source,
+		     struct intc_source *txi_source,
+		     struct intc_source *tei_source,
+		     struct intc_source *bri_source);
 
 /* tc58128.c */
 int tc58128_init(struct SH7750State *s, char *zone1, char *zone2);

diff -ruwN a/hw/sh7750.c b/hw/sh7750.c
@@ -556,9 +556,19 @@
 
     cpu->intc_handle = &s->intc;
 
-    sh_serial_init(0x1fe00000, 0, s->periph_freq, serial_hds[0]);
+    sh_serial_init(0x1fe00000, 0, s->periph_freq, serial_hds[0],
+		   sh_intc_source(&s->intc, SCI1_ERI),
+		   sh_intc_source(&s->intc, SCI1_RXI),
+		   sh_intc_source(&s->intc, SCI1_TXI),
+		   sh_intc_source(&s->intc, SCI1_TEI),
+		   NULL);
     sh_serial_init(0x1fe80000, SH_SERIAL_FEAT_SCIF,
-		   s->periph_freq, serial_hds[1]);
+		   s->periph_freq, serial_hds[1],
+		   sh_intc_source(&s->intc, SCIF_ERI),
+		   sh_intc_source(&s->intc, SCIF_RXI),
+		   sh_intc_source(&s->intc, SCIF_TXI),
+		   NULL,
+		   sh_intc_source(&s->intc, SCIF_BRI));
 
     tmu012_init(0x1fd80000,
 		TMU012_FEAT_TOCR | TMU012_FEAT_3CHAN | TMU012_FEAT_EXTCLK,

diff -ruwN a/hw/sh_serial.c b/hw/sh_serial.c
@@ -55,6 +55,12 @@
     int flags;
 
     CharDriverState *chr;
+
+    struct intc_source *eri;
+    struct intc_source *rxi;
+    struct intc_source *txi;
+    struct intc_source *tei;
+    struct intc_source *bri;
 } sh_serial_state;
 
 static void sh_serial_ioport_write(void *opaque, uint32_t offs, uint32_t val)

@@ -74,9 +80,15 @@
         s->brr = val;
 	return;
     case 0x08: /* SCR */
-        s->scr = val & ((s->feat & SH_SERIAL_FEAT_SCIF) ? 0xfb : 0xff);
+        s->scr = val & ((s->feat & SH_SERIAL_FEAT_SCIF) ? 0xfa : 0xff);
         if (!(val & (1 << 5)))
             s->flags |= SH_SERIAL_FLAG_TEND;
+        if ((s->feat & SH_SERIAL_FEAT_SCIF) && s->txi) {
+            if ((val & (1 << 7)) && !(s->txi->asserted))
+                sh_intc_toggle_source(s->txi, 0, 1);
+            else if (!(val & (1 << 7)) && s->txi->asserted)
+                sh_intc_toggle_source(s->txi, 0, -1);
+        }
         return;
     case 0x0c: /* FTDR / TDR */
         if (s->chr) {

@@ -159,6 +171,12 @@
 #endif
     if (s->feat & SH_SERIAL_FEAT_SCIF) {
         switch(offs) {
+        case 0x00: /* SMR */
+            ret = s->smr;
+            break;
+        case 0x08: /* SCR */
+            ret = s->scr;
+            break;
         case 0x10: /* FSR */
             ret = 0;
             if (s->flags & SH_SERIAL_FLAG_TEND)

@@ -278,7 +296,12 @@
 };
 
 void sh_serial_init (target_phys_addr_t base, int feat,
-		     uint32_t freq, CharDriverState *chr)
+		     uint32_t freq, CharDriverState *chr,
+		     struct intc_source *eri_source,
+		     struct intc_source *rxi_source,
+		     struct intc_source *txi_source,
+		     struct intc_source *tei_source,
+		     struct intc_source *bri_source)
 {
     sh_serial_state *s;
     int s_io_memory;

@@ -314,4 +337,10 @@
     if (chr)
         qemu_chr_add_handlers(chr, sh_serial_can_receive1, sh_serial_receive1,
 			      sh_serial_event, s);
+
+    s->eri = eri_source;
+    s->rxi = rxi_source;
+    s->txi = txi_source;
+    s->tei = tei_source;
+    s->bri = bri_source;
 }