From f7094466cbe6a67f6158857dcaffe571271e795d Mon Sep 17 00:00:00 2001
From: Chenli Wei <chenli.wei@intel.com>
Date: Fri, 13 May 2022 17:10:14 +0800
Subject: [PATCH] misc: add the define of MAX_IR_ENTRIES

The current code align MAX_IR_ENTRIES with the roundup to 2^n of the
CONFIG_MAX_PT_IRQ_ENTRIES, there is an issue of the powerof2_roundup to
calculate the macro, and the code style is very ugly when we use macro
to fix it.

So this patch move the calculate and define of MAX_IR_ENTRIES to offline
tool.

Signed-off-by: Chenli Wei <chenli.wei@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
---
 .../static_allocators/board_capability.py          | 14 ++++++++++++++
 misc/config_tools/xforms/vm_configurations.h.xsl   |  1 +
 2 files changed, 15 insertions(+)

diff --git a/misc/config_tools/static_allocators/board_capability.py b/misc/config_tools/static_allocators/board_capability.py
index 5a98f472d..1d9981f43 100644
--- a/misc/config_tools/static_allocators/board_capability.py
+++ b/misc/config_tools/static_allocators/board_capability.py
@@ -7,6 +7,20 @@
 
 import common
 
+def powerof2_roundup(value):
+    return 0 if value == 0 else (1 << (value - 1).bit_length())
+
+# Make sure all PT IRQs work w/ interrupt remapping or post interrupt
+def create_max_ir_entries(scenario_etree, allocation_etree):
+    pt_irq_entries = common.get_node(f"//MAX_PT_IRQ_ENTRIES/text()", scenario_etree)
+    if (pt_irq_entries is not None) and (int(pt_irq_entries) > 256):
+        ir_entries = powerof2_roundup(int(pt_irq_entries))
+    else:
+        ir_entries = 256
+
+    common.append_node("/acrn-config/hv/MAX_IR_ENTRIES", ir_entries, allocation_etree)
+
 def fn(board_etree, scenario_etree, allocation_etree):
     pci_bus_nums =  board_etree.xpath("//bus[@type='pci']/@address")
     common.append_node("/acrn-config/platform/MAX_PCI_BUS_NUM", hex(max(map(lambda x: int(x, 16), pci_bus_nums)) + 1), allocation_etree)
+    create_max_ir_entries(scenario_etree, allocation_etree)
diff --git a/misc/config_tools/xforms/vm_configurations.h.xsl b/misc/config_tools/xforms/vm_configurations.h.xsl
index f91c2720c..1ef0f3dd2 100644
--- a/misc/config_tools/xforms/vm_configurations.h.xsl
+++ b/misc/config_tools/xforms/vm_configurations.h.xsl
@@ -34,6 +34,7 @@
     <xsl:call-template name="vm_count" />
     <xsl:call-template name="sos_vm_bootarges" />
     <xsl:call-template name="vm_vuart_num" />
+    <xsl:value-of select = "acrn:define('MAX_IR_ENTRIES', //MAX_IR_ENTRIES, 'U')" />
   </xsl:template>
 
   <xsl:template name ="vm_vuart_num">