r182 - in openbios-devel: arch/sparc32 drivers

Author: blueswirl
Date: 2007-12-25 09:26:21 +0100 (Tue, 25 Dec 2007)
New Revision: 182

Modified:
   openbios-devel/arch/sparc32/vectors.S
   openbios-devel/drivers/obio.c
Log:
Add handlers for timer interrupts

Modified: openbios-devel/arch/sparc32/vectors.S
===================================================================
--- openbios-devel/arch/sparc32/vectors.S	2007-12-10 20:06:58 UTC (rev 181)
+++ openbios-devel/arch/sparc32/vectors.S	2007-12-25 08:26:21 UTC (rev 182)
@@ -43,6 +43,12 @@

#define BTRAP(lvl) ba bug; mov lvl, %g1; nop; nop;
 #define BTRAPS(x) BTRAP(x) BTRAP(x+1) BTRAP(x+2) BTRAP(x+3) BTRAP(x+4) BTRAP(x+5) BTRAP(x+6) BTRAP(x+7)
+#define TRAP_ENTRY_INTERRUPT(int_level) \
+        sethi %hi(irq_entry ## int_level), %l7; \
+        or %l7, %lo(irq_entry ## int_level), %l7; \
+        jmp %l7; \
+         nop
+
 t_zero:         b entry; nop; nop; nop;
                 BTRAP(0x1) BTRAP(0x2) BTRAP(0x3) BTRAP(0x4)
 t_wovf:         WINDOW_SPILL                        /* Window Overflow               */
@@ -67,7 +73,12 @@
 t_irq14:        TRAP_ENTRY_INTERRUPT(14)            /* IRQ Timer #2                  */
 t_nmi:          BAD_TRAP(0x1f)                      /* Level 15 (NMI)                */
 #else
-                BTRAPS(0x10) BTRAPS(0x18)
+                BTRAPS(0x10)
+                BTRAP(0x18) BTRAP(0x19)
+t_irq10:        TRAP_ENTRY_INTERRUPT(10)            /* IRQ Timer #1 (one we use)     */
+                BTRAP(0x1b) BTRAP(0x1c) BTRAP(0x1d)
+t_irq14:        TRAP_ENTRY_INTERRUPT(14)            /* IRQ Timer #2                  */
+                BTRAP(0x1f)
 #endif
                 BTRAPS(0x20) BTRAPS(0x28)
                 BTRAPS(0x30) BTRAPS(0x38)
@@ -174,6 +185,21 @@
         b       _forever                                  ;
          nop

+irq_entry10:
+        sethi   %hi(counter_regs), %l7
+        ld      [%l7 + %lo(counter_regs)], %l7
+        sethi   0x10000, %l6
+        ld      [%l7 + %l6], %g0
+        jmp     %l1
+         rett   %l2
+
+irq_entry14:
+        sethi   %hi(counter_regs), %l7
+        ld      [%l7 + %lo(counter_regs)], %l7
+        ld      [%l7], %g0
+        jmp     %l1
+         rett  %l2
+
 /* Register window handlers */
 #include "wof.S"
 #include "wuf.S"

Modified: openbios-devel/drivers/obio.c
===================================================================
--- openbios-devel/drivers/obio.c	2007-12-10 20:06:58 UTC (rev 181)
+++ openbios-devel/drivers/obio.c	2007-12-25 08:26:21 UTC (rev 182)
@@ -1067,10 +1067,11 @@
     fword("finish-device");
 }

+volatile struct sun4m_timer_regs *counter_regs;
+
 static void
 ob_counter_init(uint64_t base, unsigned long offset)
 {
-    volatile struct sun4m_timer_regs *regs;
     int i;

ob_new_obio_device("counter", NULL);
@@ -1101,17 +1102,19 @@
     fword("property");

-    regs = map_io(base + (uint64_t)offset, sizeof(*regs));
-    regs->l10_timer_limit = (((1000000/100) + 1) << 10);
-    regs->cpu_timers[0].l14_timer_limit = 0;
+    counter_regs = map_io(base + (uint64_t)offset, sizeof(*counter_regs));
+    counter_regs->cfg = 0xffffffff;
+    counter_regs->l10_timer_limit = (((1000000/100) + 1) << 10);
+    counter_regs->cpu_timers[0].l14_timer_limit = 0;
+    counter_regs->cpu_timers[0].cntrl = 1;

for (i = 0; i < SUN4M_NCPU; i++) {
-        PUSH((unsigned long)&regs->cpu_timers[i]);
+        PUSH((unsigned long)&counter_regs->cpu_timers[i]);
         fword("encode-int");
         if (i != 0)
             fword("encode+");
     }
-    PUSH((unsigned long)&regs->l10_timer_limit);
+    PUSH((unsigned long)&counter_regs->l10_timer_limit);
     fword("encode-int");
     fword("encode+");
     push_str("address");