Ref only the head of a pbuf chain, instead of the whole thing, to avoid leaking pbufs.

[netwatch.git] / ich2 / smi.c

diff --git a/ich2/smi.c b/ich2/smi.c
index 41bc4a1fea6f4299bb5881466134a9e8243c2acb..7f9642183812738f5a4edb83e61fb972cc9057dd 100644 (file)
--- a/ich2/smi.c
+++ b/ich2/smi.c
@@ -4,6 +4,9 @@
 #include <stdint.h>
 #include <vga-overlay.h>
 #include <reg-82801b.h>
+#include <output.h>
+
+static smi_handler_t _handlers[SMI_EVENT_MAX] = {0};
 
 static uint16_t _get_PMBASE()
 {
@@ -39,35 +42,38 @@ void smi_poll()
        
        if (sts & ICH2_SMI_STS_BIOS_STS)
        {
-               dolog("Unhandled: BIOS_STS");
+               if (_handlers[SMI_EVENT_GBL_RLS] == SMI_HANDLER_NONE)
+                       output("Unhandled: BIOS_STS");
+               else if (_handlers[SMI_EVENT_GBL_RLS] != SMI_HANDLER_IGNORE)
+                       _handlers[SMI_EVENT_GBL_RLS](SMI_EVENT_GBL_RLS);
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_BIOS_STS);
        }
        
        if (sts & ICH2_SMI_STS_LEGACY_USB_STS)
        {
-               dolog("Unhandled: LEGACY_USB_STS");
+               output("Unhandled: LEGACY_USB_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_LEGACY_USB_STS);
        }
        
        if (sts & ICH2_SMI_STS_SLP_SMI_STS)
        {
-               dolog("Unhandled: SLP_SMI_STS");
+               output("Unhandled: SLP_SMI_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_SLP_SMI_STS);
        }
        
        if (sts & ICH2_SMI_STS_APM_STS)
        {
-               dolog("Unhandled: APM_STS");
+               output("Unhandled: APM_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_APM_STS);
        }
        
        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)
@@ -78,25 +84,25 @@ void smi_poll()
                pm1_sts &= pm1_en;
                if (pm1_sts & ICH2_PM1_STS_RTC_STS)
                {
-                       dolog("Unhandled: PM1_STS: RTC_STS");
+                       output("Unhandled: PM1_STS: RTC_STS");
                        outw(_get_PMBASE() + ICH2_PMBASE_PM1_STS, ICH2_PM1_STS_RTC_STS);
                }
                
                if (pm1_sts & ICH2_PM1_STS_PWRBTN_STS)
                {
-                       dolog("Unhandled: PM1_STS: PWRBTN_STS");
+                       output("Unhandled: PM1_STS: PWRBTN_STS");
                        outw(_get_PMBASE() + ICH2_PMBASE_PM1_STS, ICH2_PM1_STS_PWRBTN_STS);
                }
                
                if (pm1_sts & ICH2_PM1_STS_GBL_STS)
                {
-                       dolog("Unhandled: PM1_STS: GBL_STS");
+                       output("Unhandled: PM1_STS: GBL_STS");
                        outw(_get_PMBASE() + ICH2_PMBASE_PM1_STS, ICH2_PM1_STS_GBL_STS);
                }
                
                if (pm1_sts & ICH2_PM1_STS_TMROF_STS)
                {
-                       dolog("Unhandled: PM1_STS: TMROF_STS");
+                       output("Unhandled: PM1_STS: TMROF_STS");
                        outw(_get_PMBASE() + ICH2_PMBASE_PM1_STS, ICH2_PM1_STS_TMROF_STS);
                }
                
@@ -106,18 +112,18 @@ void smi_poll()
        if (sts & ICH2_SMI_STS_GPE0_STS)
        {
                /* XXX -- trawl through GPE0_STS to see what happened */
-               dolog("XXX Unhandled: GPE0_STS (expect lockup)");
+               output("XXX Unhandled: GPE0_STS (expect lockup)");
        }
        
        if (sts & ICH2_SMI_STS_GPE1_STS)
        {
                /* XXX -- trawl through GPE1_STS to see what happened */
-               dolog("XXX Unhandled: GPE1_STS (expect lockup)");
+               output("XXX Unhandled: GPE1_STS (expect lockup)");
        }
        
        if (sts & ICH2_SMI_STS_MCSMI_STS)
        {
-               dolog("Unhandled: MCSMI_STS");
+               output("Unhandled: MCSMI_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_MCSMI_STS);
        }
        
@@ -126,41 +132,112 @@ void smi_poll()
                unsigned short mon_smi = inw(_get_PMBASE() + ICH2_PMBASE_MON_SMI);
                unsigned long devact_sts = inl(_get_PMBASE() + ICH2_PMBASE_DEVACT_STS);
                unsigned long devtrap_en = inl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN);
+               
+               if (devact_sts & ICH2_DEVACT_STS_KBC_ACT_STS)
+               {
+                       if (_handlers[SMI_EVENT_DEVTRAP_KBC] == SMI_HANDLER_NONE)
+                               output("Unhandled: DEVACT_KBC_ACT_STS");
+                       else if (_handlers[SMI_EVENT_DEVTRAP_KBC] != SMI_HANDLER_IGNORE)
+                               _handlers[SMI_EVENT_DEVTRAP_KBC](SMI_EVENT_DEVTRAP_KBC);
+                       outl(_get_PMBASE() + ICH2_PMBASE_DEVACT_STS, ICH2_DEVACT_STS_KBC_ACT_STS);
+               }
+               
+               /* Refresh register cache so that we can print unhandleds as needed. */
+               mon_smi = inw(_get_PMBASE() + ICH2_PMBASE_MON_SMI);
+               devact_sts = inl(_get_PMBASE() + ICH2_PMBASE_DEVACT_STS);
+               devtrap_en = inl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN);
+               
                if (((mon_smi & 0x0F00) >> 8) & ((mon_smi & 0xF000) >> 12))
-                       dologf("Unhandled: MON_SMI (%04x)", mon_smi);
+                       outputf("Unhandled: MON_SMI (%04x)", mon_smi);
                if (devact_sts & devtrap_en)
-                       dologf("Unhandled: DEVTRAP (%08x)", devact_sts & devtrap_en);
+                       outputf("Unhandled: DEVTRAP (%08x)", devact_sts & devtrap_en);
        }
        
        if (sts & ICH2_SMI_STS_TCO_STS)
        {
-               dolog("Unhandled: TCO_STS");
+               output("Unhandled: TCO_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_TCO_STS);
        }
        
        if (sts & ICH2_SMI_STS_PERIODIC_STS)
        {
-               dolog("Unhandled: PERIODIC_STS");
+               output("Unhandled: PERIODIC_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_PERIODIC_STS);
        }
        
        if (sts & ICH2_SMI_STS_SERIRQ_SMI_STS)
        {
-               dolog("Unhandled: SERIRQ_SMI_STS");
+               output("Unhandled: SERIRQ_SMI_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_SERIRQ_SMI_STS);
        }
        
        if (sts & ICH2_SMI_STS_SMBUS_SMI_STS)
        {
-               dolog("Unhandled: SMBUS_SMI_STS");
+               output("Unhandled: SMBUS_SMI_STS");
                outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_SMBUS_SMI_STS);
        }
        
        if (smi_status() & ~ICH2_SMI_STS_PM1_STS_REG)   /* Either the chipset is buggy, or we are. */
-               dologf("WARN: couldn't clear SMI_STS! (%08x)", smi_status());
+               outputf("WARN: couldn't clear SMI_STS! (%08x)", smi_status());
        
        outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
                inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) |
                        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;
+       case SMI_EVENT_DEVTRAP_KBC:
+               outl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN,
+                       inl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN) |
+                               ICH2_DEVTRAP_EN_KBC_TRP_EN);
+               return 0;
+       case SMI_EVENT_GBL_RLS:
+               outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
+                       inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) |
+                               ICH2_SMI_EN_BIOS_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;
+       case SMI_EVENT_DEVTRAP_KBC:
+               outl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN,
+                       inl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN) &
+                               ~ICH2_DEVTRAP_EN_KBC_TRP_EN);
+               return 0;
+       case SMI_EVENT_GBL_RLS:
+               outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
+                       inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) &
+                               ~ICH2_SMI_EN_BIOS_EN);
+               return 0;
+       default:
+               return -1;
+       }
+}