base/host/hosthpet.cc File Reference

#include <nul/motherboard.h>
#include <host/hpet.h>
#include "host/hostpci.h"

Classes
class	HostHpet
	HostHpet driver. More...
Functions
	PARAM (hosthpet,{unsigned timer=~argv[0]?argv[0]:0;unsigned long address=argv[1];if(address==~0U) address=BasicHpet::get_hpet_address(mb.bus_acpi);unsigned irq=argv[2];MessageHostOp msg1(MessageHostOp::OP_ALLOC_IOMEM, address, 1024);if(!mb.bus_hostop.send(msg1)||!msg1.ptr) Logging::panic("%s failed to allocate iomem %lx+0x400\n", __PRETTY_FUNCTION__, address);if(not BasicHpet::check_hpet_present(msg1.ptr, timer, irq)){Logging::printf("This is not an HPET timer at %lx timer %x\n", address, timer);return;}HostHpet *dev=new HostHpet(mb.bus_timeout, mb.bus_hostop, mb.clock(), msg1.ptr, timer, irq, argv[3], argv[4]);mb.bus_hostirq.add(dev, HostHpet::receive_static< MessageIrq >);mb.bus_timer.add(dev, HostHpet::receive_static< MessageTimer >);},"hosthpet:timer=0,address,irq=~0u,level=1,maxfreq=10000 - use the host HPET as timer.","If no address is given, the ACPI HPET table or 0xfed00000 is used.","If no irq is given, either the legacy or the lowest possible IRQ is used.","The maxfreq parameter defines the maximum IRQ rate and therefore accuracy of the device.","Example: 'hosthpet:1,0xfed00000' - for the second timer of the hpet at 0xfed00000.")
	PARAM (quirk_hpet_ich, HostPci pci(mb.bus_hwpcicfg, mb.bus_hostop);unsigned address=pci.conf_read(0xf8, 0x3c);if(!address) return;MessageHostOp msg1(MessageHostOp::OP_ALLOC_IOMEM, address &~0x3fff, 0x4000);if(!mb.bus_hostop.send(msg1)||!msg1.ptr) Logging::panic("%s failed to allocate iomem %x+0x4000\n", __PRETTY_FUNCTION__, address);volatile unsigned *reg=reinterpret_cast< volatile unsigned * >(msg1.ptr+0x3404);Logging::printf("HPET try enable on ICH addr %x val %x\n", address,*reg);*reg=*reg|0x80;Logging::printf("ICH HPET force %s %x\n",*reg &0x80?"enabled":"failed",*reg);,"quirk_hpet_ich - force enable the HPET on an ICH chipset.","Please note that this does not check whether this is done on the right chipset - use it on your own risk!")

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Function Documentation

PARAM

(

hosthpet

)

PARAM	(	quirk_hpet_ich	,
		HostPci pci(mb.bus_hwpcicfg, mb.bus_hostop);unsigned	address = pci.conf_read(0xf8, 0x3c);if(!address) return;MessageHostOp msg1(MessageHostOp::OP_ALLOC_IOMEM, address &~0x3fff, 0x4000);if(!mb.bus_hostop.send(msg1)||!msg1.ptr) Logging::panic("%s failed to allocate iomem %x+0x4000\n", __PRETTY_FUNCTION__, address);volatile unsigned *reg=reinterpret_cast< volatile unsigned * >(msg1.ptr+0x3404);Logging::printf("HPET try enable on ICH addr %x val %x\n", address,*reg);*reg=*reg|0x80;Logging::printf("ICH HPET force %s %x\n",*reg &0x80?"enabled":"failed",*reg);,
		"quirk_hpet_ich - force enable the HPET on an ICH chipset."	,
		"Please note that this does not check whether this is done on the right chipset - use it on your own risk!"
	)