From 238659e94b52a47212109dcfc3d46f10c0494994 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sat, 10 Jun 2023 22:22:09 -0400
Subject: [PATCH] Store PCI device mapped memory ranges

---
 src/hulk/pci.d | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/hulk/pci.d b/src/hulk/pci.d
index 94a1211..398ed42 100644
--- a/src/hulk/pci.d
+++ b/src/hulk/pci.d
@@ -4,6 +4,7 @@ import hulk.cpu;
 import hulk.klog;
 import hulk.hurl;
 import hulk.hurl.a1;
+import hulk.range;
 
 struct Pci
 {
@@ -35,6 +36,7 @@ struct Pci
         ubyte if_id;
         bool multifunction;
         ubyte header_type;
+        Range[6] memory_ranges;
 
         void initialize(Address address, ushort vendor_id, ushort device_id)
         {
@@ -61,6 +63,7 @@ struct Pci
 
         private void map_memory_regions()
         {
+            size_t range_index;
             uint[2] r;
             uint[2] s;
             for (uint reg_no = 4u; reg_no <= 9u; reg_no++)
@@ -109,10 +112,13 @@ struct Pci
                 {
                     s[1] = 0xFFFF_FFFFu;
                 }
-                ulong addr = (cast(ulong)r[0] & 0xFFFF_FFF0u) | (cast(ulong)r[1] << 32u);
+                ulong mm_region_address = (cast(ulong)r[0] & 0xFFFF_FFF0u) | (cast(ulong)r[1] << 32u);
                 ulong length = ~((cast(ulong)s[0] & 0xFFFF_FFF0u) | (cast(ulong)s[1] << 32u)) + 1u;
                 ulong flags = (r[0] & 0x8) != 0u ? PT_WRITE_THROUGH : 0u;
-                Hurl.identity_map_range(addr, length, flags);
+                Hurl.identity_map_range(mm_region_address, length, flags);
+                memory_ranges[range_index].address = mm_region_address;
+                memory_ranges[range_index].length = length;
+                range_index++;
                 if (is_64bit)
                 {
                     reg_no++;