X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/cc80dccf2159febf657f8bd3acb2633e2d6c90df..6b91f09cf683c29989ab259f4a433fb7d1427b36:/ich2/smi.c

diff --git a/ich2/smi.c b/ich2/smi.c
index 6ca00c9..7f96421 100644
--- a/ich2/smi.c
+++ b/ich2/smi.c
@@ -2,11 +2,20 @@
 #include <pci.h>
 #include <io.h>
 #include <stdint.h>
+#include <vga-overlay.h>
 #include <reg-82801b.h>
+#include <output.h>
 
-uint16_t _get_PMBASE()
+static smi_handler_t _handlers[SMI_EVENT_MAX] = {0};
+
+static uint16_t _get_PMBASE()
 {
-	return pci_read32(ICH2_LPC_BUS, ICH2_LPC_DEV, ICH2_LPC_FN, ICH2_LPC_PCI_PMBASE) & ICH2_PMBASE_MASK;
+	static long pmbase = -1;
+	
+	if (pmbase == -1)	/* Memoize it so that we don't have to hit PCI so often. */
+		pmbase = pci_read32(ICH2_LPC_BUS, ICH2_LPC_DEV, ICH2_LPC_FN, ICH2_LPC_PCI_PMBASE) & ICH2_PMBASE_MASK;
+	
+	return pmbase;
 }
 
 void smi_disable()
@@ -26,3 +35,209 @@ unsigned long smi_status()
 	unsigned short smi_sts = _get_PMBASE() + ICH2_PMBASE_SMI_STS;
 	return inl(smi_sts);
 }
+
+void smi_poll()
+{
+	unsigned long sts = smi_status();
+	
+	if (sts & ICH2_SMI_STS_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)
+	{
+		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)
+	{
+		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)
+	{
+		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);
+	}
+	
+	if (sts & ICH2_SMI_STS_PM1_STS_REG)
+	{
+		unsigned short pm1_sts = inw(_get_PMBASE() + ICH2_PMBASE_PM1_STS);
+		unsigned short pm1_en = inw(_get_PMBASE() + ICH2_PMBASE_PM1_EN);
+		
+		pm1_sts &= pm1_en;
+		if (pm1_sts & ICH2_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)
+		{
+			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)
+		{
+			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)
+		{
+			output("Unhandled: PM1_STS: TMROF_STS");
+			outw(_get_PMBASE() + ICH2_PMBASE_PM1_STS, ICH2_PM1_STS_TMROF_STS);
+		}
+		
+		outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_PM1_STS_REG);
+	}
+	
+	if (sts & ICH2_SMI_STS_GPE0_STS)
+	{
+		/* XXX -- trawl through GPE0_STS to see what happened */
+		output("XXX Unhandled: GPE0_STS (expect lockup)");
+	}
+	
+	if (sts & ICH2_SMI_STS_GPE1_STS)
+	{
+		/* XXX -- trawl through GPE1_STS to see what happened */
+		output("XXX Unhandled: GPE1_STS (expect lockup)");
+	}
+	
+	if (sts & ICH2_SMI_STS_MCSMI_STS)
+	{
+		output("Unhandled: MCSMI_STS");
+		outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_MCSMI_STS);
+	}
+	
+	if (sts & ICH2_SMI_STS_DEVMON_STS)
+	{
+		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))
+			outputf("Unhandled: MON_SMI (%04x)", mon_smi);
+		if (devact_sts & devtrap_en)
+			outputf("Unhandled: DEVTRAP (%08x)", devact_sts & devtrap_en);
+	}
+	
+	if (sts & ICH2_SMI_STS_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)
+	{
+		output("Unhandled: PERIODIC_STS");
+		outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_PERIODIC_STS);
+	}
+	
+	if (sts & ICH2_SMI_STS_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)
+	{
+		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. */
+		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;
+	}
+}