Initial smi_event infrastructure

[netwatch.git] / ich2 / smi.c

diff --git a/ich2/smi.c b/ich2/smi.c
index adba74f4b285c2ef046761d9896d4d3eabbad714..d255615fbc9439db215e659f613a437e84759c70 100644 (file)
--- a/ich2/smi.c
+++ b/ich2/smi.c
@@ -6,6 +6,8 @@
 #include <reg-82801b.h>
 #include <output.h>
 
+static smi_handler_t _handlers[SMI_EVENT_MAX] = {0};
+
 static uint16_t _get_PMBASE()
 {
        static long pmbase = -1;
@@ -64,11 +66,11 @@ void smi_poll()
        
        if (sts & ICH2_SMI_STS_SWSMI_TMR_STS)   // Ack it, then request another.
        {
+               if (_handlers[SMI_EVENT_FAST_TIMER] == SMI_HANDLER_NONE)
+                       output("Unhandled: SWSMI_TMR_STS");
+               else if (_handlers[SMI_EVENT_FAST_TIMER] != SMI_HANDLER_IGNORE)
+                       _handlers[SMI_EVENT_FAST_TIMER](SMI_EVENT_FAST_TIMER);
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_SWSMI_TMR_STS);
-               outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
-                       inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) & ~ICH2_SMI_EN_SWSMI_TMR_EN);
-               outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
-                       inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) | ICH2_SMI_EN_SWSMI_TMR_EN);
        }
        
        if (sts & ICH2_SMI_STS_PM1_STS_REG)
@@ -165,3 +167,39 @@ void smi_poll()
                        ICH2_SMI_EN_EOS |
                        ICH2_SMI_EN_GBL_SMI_EN);
 }
+
+int smi_register_handler(smi_event_t ev, smi_handler_t hnd)
+{
+       if (ev >= SMI_EVENT_MAX)
+               return -1;
+       _handlers[ev] = hnd;
+       return 0;
+}
+
+int smi_enable_event(smi_event_t ev)
+{
+       switch(ev)
+       {
+       case SMI_EVENT_FAST_TIMER:
+               outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
+                       inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) |
+                               ICH2_SMI_EN_SWSMI_TMR_EN);
+               return 0;
+       default:
+               return -1;
+       }
+}
+
+int smi_disable_event(smi_event_t ev)
+{
+       switch(ev)
+       {
+       case SMI_EVENT_FAST_TIMER:
+               outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
+                       inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) &
+                               ~ICH2_SMI_EN_SWSMI_TMR_EN);
+               return 0;
+       default:
+               return -1;
+       }
+}