ca971bbfd8
This patch changes the top-level directory layout as a preparatory step for improving the tools for managing 3rd-party source codes. The rationale is described in the issue referenced below. Issue #1082
51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
This directory contains an implementation of a simple ACPI parser
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Behavior
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--------
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This server should be used when using a kernel (like Fiasco.OC or Nova) that
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takes advantage of x86's APIC. The server traverses the ACPI tables and sets the
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interrupt line of devices within the PCI config space to the GSIs found in the
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ACPI tables. The 'MADT' table is parsed by the server as well, enabling clients
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to use the correct IRQ when 'Interrupt Override' structures are found wihtin the
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table.
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Usage
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-----
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Start the 'acpi_drv' in your Genode environment. Do not start the 'pci_drv'
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since this will be used as a slave of the 'acpi_drv'. You still must load the
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'pci_drv' in your boot loader.
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Configuration snipped (please note that IRQ service requests of the 'timer' are
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routed to the ACPI-driver):
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!<start name="acpi">
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! <resource name="RAM" quantum="2M"/>
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! <binary name="acpi_drv"/>
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! <provides>
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! <service name="PCI"/>
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! <service name="IRQ" />
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! </provides>
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! <route>
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! <service name="PCI"> <any-child /> </service>
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! <any-service> <parent/> <any-child /> </any-service>
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! </route>
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!</start>
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!
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!<start name="timer">
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! <resource name="RAM" quantum="1M"/>
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! <provides><service name="Timer"/></provides>
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! <route>
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! <service name="IRQ"><child name="acpi" /></service>
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! <any-service> <parent /> <any-child /></any-service>
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! </route>
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!</start>
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Limitations and known issues
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----------------------------
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Currently there is no interface to set the interrupt mode for Irq_sessions
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(e.g., level or edge triggered). This is required by Fiasco.OCs kernel
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interface. We regard this as future work.
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