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XIVE Exploitation

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Signed-off-by: Jeff Scheel <scheel@us.ibm.com>
pull/2/head
Jeff Scheel 4 years ago
parent 55fc47264f
commit 3ff0f55bf2
4 changed files with 5073 additions and 2889 deletions
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139
DeviceTree/ch_devtree_system.xml
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@ -6824,8 +6824,19 @@
<para>For LSIs, the platform shall adhere to the
<xref linkend="dbdoclet.50569387_67880" /> interrupt structure OF
representation.</para>

<section>
<para>PAPR may support one of two generations of interrupt controllers with
backward compatible firmware interfaces. The first generation interrupt
controller is represented per
<xref linkend="sec_powerpc_external_interrupt_controller_nodes" />
and its sub sections.
The second generation, External Interrupt Virtualization Engine is
represented either per
<xref linkend="sec_powerpc_external_interrupt_controller_nodes" />
when operated in Legacy Compatibility mode, or per
<xref linkend="sec_powerpc_external_interrupt_virtualization_engine_node" />
and its sub sections when operated in Exploitation mode.</para>

<section xml:id="sec_powerpc_external_interrupt_controller_nodes">
<title>PowerPC External Interrupt Controller Nodes</title>

<para>This section describes the properties for the PowerPC External
@ -7177,6 +7188,130 @@

</section>

<section xml:id="sec_powerpc_external_interrupt_virtualization_engine_node">
<title>PowerPC External Interrupt Virtualization Engine Nodes</title>

<para>This section describes the properties for the External Interrupt Virtualization
node. Interrupt controllers are normally packaged inside system chips, however,
they are logically represented in the device tree by the interrupt controller
node. This node reports the logical real addresses through which the client
program can manage the interrupt context for its physical processor thread.</para>

<para>Event source resources consist of either a single or pair of page addresses
associated with each individual event source that is allocated to the partition.
These addresses do not appear in the device tree; rather the platform provides
the hcall(), H_INT_GET_SOURCE_INFO.</para>

<para>At a dynamic reconfiguration event, such as adding or removing an IO adapter,
or processor, the associated
<emphasis role="bold"><literal>&#8220;int&#8221;</literal></emphasis>
property is added or removed from the partition
configuration and along with it the associated page addresses.</para>

<variablelist>
<varlistentry>
<term><emphasis role="bold"><literal>&#8220;name&#8221;</literal></emphasis> [S]</term>
<listitem>
<para>Standard
<emphasis>property name</emphasis> that denotes a PowerPC External
Interrupt Controller.</para>
<para><emphasis>prop-encoded-array</emphasis>: A string, encoded as with
<emphasis role="bold"><literal>encode-string</literal></emphasis>.</para>
<para>The value of this string shall be
<literal>&#8220;interrupt-controller&#8221;</literal>.</para>
</listitem>
</varlistentry>

<varlistentry>
<term><emphasis role="bold"><literal>&#8220;device_type&#8221;</literal></emphasis> [S]</term>
<listitem>
<para>Standard
<emphasis>property name</emphasis> that indicates an Interrupt
Controller.</para>
<para><emphasis>prop-encoded-array</emphasis>: A string, encoded as with
<emphasis role="bold"><literal>encode-string</literal></emphasis>.</para>
<para>The value of this property shall be
<literal>&#8220;power-ivpe&#8221;</literal>.</para>
</listitem>
</varlistentry>

<varlistentry>
<term><emphasis role="bold"><literal>&#8220;reg&#8221;</literal></emphasis> [S]</term>
<listitem>
<para>Standard
<emphasis>property name</emphasis> to define the base logical addresses
and sizes of the registers for managing the interrupt context of a
physical processor thread</para>
<para>
<emphasis>prop-encoded-array</emphasis>: Two
(<emphasis>encode-phys, endcode-int</emphasis>)
pairs. The entries represent the user and OS level views of the
XIVE physical processor thread interrupt management areas respectively
(“TIMA” addresses). The first of the two entries is the base address and
size of the user level view and the second of the two entries is the
base address and size of the OS level view.</para>
</listitem>
</varlistentry>

<varlistentry>
<term><emphasis role="bold"><literal>&#8220;compatible&#8221;</literal></emphasis> [S]</term>
<listitem>
<para>Standard
<emphasis>property name</emphasis> to define alternate
<emphasis role="bold"><literal>&#8220;name&#8221;</literal></emphasis> property values.</para>
<para>
<emphasis>prop-encoded-array</emphasis>: The concatenation, with
<emphasis role="bold"><literal>encode+</literal></emphasis>, of an arbitrary number of text strings,
each encoded as with
<emphasis role="bold"><literal>encode-string</literal></emphasis>.</para>
<para>The property value shall include
<emphasis role="bold"><literal>&#8220;ibm,power-ivpe&#8221;</literal></emphasis>.</para>
</listitem>
</varlistentry>

<varlistentry>
<term><emphasis role="bold"><literal>&#8220;ibm,xive_eq-sizes&#8221;</literal></emphasis></term>
<listitem>
<para><emphasis>property name</emphasis>: Defines the sizes of event
queues that are supported by for the XIVE option.</para>
<para>
<emphasis>prop-encoded-value</emphasis>: One to N integers, encoded as with
<emphasis role="bold"><literal>encode-int</literal></emphasis>.</para>
<para>Each integer is expressed as the power of 2 of the event queue size.
For example, a 4K event queue size is represented by the value of 12
(4K = 2<superscript>12</superscript>). The integers are arranged in ascending order.</para>
</listitem>
</varlistentry>

<varlistentry>
<term><emphasis role="bold"><literal>&#8220;ibm,xive-lisn-ranges&#8221;</literal></emphasis></term>
<listitem>
<para><emphasis>property name:</emphasis> Defines the LISN ranges assigned
to the client program.</para>
<para><emphasis>prop-encoded-array</emphasis>: One or more
(<emphasis>LISN, number</emphasis>) pairs, where LISN is a single cell
hexadecimal value between 0x00000000 and 0x7FFFFFFF, and number is an
integer. Each pair represents a contiguous range of LISNs. These LISNs
can be used by the OS for any purpose (eg IPIs). The first range will
contain at least one per possible thread in the partition.</para>
</listitem>
</varlistentry>

<varlistentry>
<term><emphasis role="bold"><literal>&#8220;interrupt-controller&#8221;</literal></emphasis> [S]</term>
<listitem>
<para>Standard
<emphasis>property name</emphasis> to indicate an interrupt (sub-)tree
root.</para>
<para><emphasis>prop-encoded-array</emphasis>: &lt;none&gt; The presence of
this property indicates that this node represents an interrupt
controller.</para>
</listitem>
</varlistentry>
</variablelist>

</section>

</section>

<section>

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RTAS/ch_rtas_call_defn.xml
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RTAS/sec_rtas_get_indices.xml
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@ -5278,6 +5278,13 @@
<listitem>
<para>The OS completes/invalidates current dump status.</para>
</listitem>

<listitem>
<para>The OS must use H_CLEAR_HPT to clear the page table if running
in XIVE Exploitation Mode, H_REMOVE is not a sufficient mechanism
to clear the HPT. Failure to use H_CLEAR_HPT may result in H_READ
returning invalid entries as valid.</para>
</listitem>
</orderedlist>
</listitem>
</varlistentry>

2041
Virtualization/ch_lpar_option.xml
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