From 2031c565df91719111a121ccf4860ea275858d2d Mon Sep 17 00:00:00 2001
From: Sir Richard <sir_richard@svn.reactos.org>
Date: Mon, 7 Jun 2010 15:09:44 +0000
Subject: [PATCH] [NTOS]: Check registry for our CardList, check if the PCI
 hardware matches any entry in there that specifies it has full/extended
 address decoding, and write the registry flag for it.

svn path=/trunk/; revision=47660
---
 reactos/hal/halx86/generic/legacy/bussupp.c | 77 ++++++++++++++++++++-
 reactos/hal/halx86/include/halp.h           | 12 ++++
 2 files changed, 86 insertions(+), 3 deletions(-)

diff --git a/reactos/hal/halx86/generic/legacy/bussupp.c b/reactos/hal/halx86/generic/legacy/bussupp.c
index 3c3516764e6..2ffdef8e761 100644
--- a/reactos/hal/halx86/generic/legacy/bussupp.c
+++ b/reactos/hal/halx86/generic/legacy/bussupp.c
@@ -352,8 +352,77 @@ HalpIsRecognizedCard(IN PPCI_REGISTRY_INFO_INTERNAL PciRegistryInfo,
                      IN PPCI_COMMON_CONFIG PciData,
                      IN ULONG Flags)
 {
-    /* Not yet implemented */
-    if (!WarningsGiven[1]++) DbgPrint("HAL: Not checking for PCI Cards with Extended Addressing. Your hardware may malfunction!\n");
+    ULONG ElementCount, i;
+    PPCI_CARD_DESCRIPTOR CardDescriptor;
+    
+    /* How many PCI Cards that we know about? */
+    ElementCount = PciRegistryInfo->ElementCount;
+    if (!ElementCount) return FALSE;
+
+    /* Loop all descriptors */
+    CardDescriptor = &PciRegistryInfo->CardList[0];
+    for (i = 0; i < ElementCount; i++, CardDescriptor++)
+    {
+        /* Check for flag match */
+        if (CardDescriptor->Flags != Flags) continue;
+        
+        /* Check for VID-PID match */
+        if ((CardDescriptor->VendorID != PciData->VendorID) ||
+            (CardDescriptor->DeviceID != PciData->DeviceID))
+        {
+            /* Skip */
+            continue;
+        }
+
+        /* Check for revision match, if requested */
+        if ((CardDescriptor->Flags & HALP_CHECK_CARD_REVISION_ID) &&
+            (CardDescriptor->RevisionID != PciData->RevisionID))
+        {
+            /* Skip */
+            continue;
+        }
+        
+        /* Check what kind of device this is */
+        switch (PCI_CONFIGURATION_TYPE(PciData))
+        {
+            /* CardBUS Bridge */
+            case PCI_CARDBUS_BRIDGE_TYPE:
+                
+                /* This means the real device header is in the device-specific data */
+                PciData = (PPCI_COMMON_CONFIG)PciData->DeviceSpecific;
+                
+            /* Normal PCI device */
+            case PCI_DEVICE_TYPE:
+
+                /* Check for subvendor match, if requested */
+                if ((CardDescriptor->Flags & HALP_CHECK_CARD_SUBVENDOR_ID) &&
+                    (CardDescriptor->SubsystemVendorID != PciData->u.type0.SubVendorID))
+                {
+                    /* Skip */
+                    continue;
+                }
+                
+                /* Check for subsystem match, if requested */
+                if ((CardDescriptor->Flags & HALP_CHECK_CARD_SUBSYSTEM_ID) &&
+                    (CardDescriptor->SubsystemID != PciData->u.type0.SubSystemID))
+                {
+                    /* Skip */
+                    continue;
+                }
+                
+                /* You made it! */
+                return TRUE;
+                
+            /* PCI Bridge -- don't bother */
+            case PCI_BRIDGE_TYPE:
+            default:
+             
+                /* Recognize it */
+                return TRUE;
+        }
+    }
+    
+    /* This means the card isn't recognized */
     return FALSE;
 }
 
@@ -598,7 +667,9 @@ HalpInitializePciBus(VOID)
                 if (!ExtendedAddressDecoding)
                 {
                     /* Check for it */
-                    if (HalpIsRecognizedCard(PciRegistryInfo, PciData, 1))
+                    if (HalpIsRecognizedCard(PciRegistryInfo,
+                                             PciData,
+                                             HALP_CARD_FEATURE_FULL_DECODE))
                     {
                         /* We'll do chipset checks later */
                         DbgPrint("HAL: Recognized a PCI Card with Extended Address Decoding. This is not supported!\n");
diff --git a/reactos/hal/halx86/include/halp.h b/reactos/hal/halx86/include/halp.h
index aa36554c7ec..bc0e8fdfd1f 100644
--- a/reactos/hal/halx86/include/halp.h
+++ b/reactos/hal/halx86/include/halp.h
@@ -485,6 +485,18 @@ HalpHardwareInterruptLevel(
     VOID
 );
 
+//
+// Feature flags
+//
+#define HALP_CARD_FEATURE_FULL_DECODE   0x0001
+
+//
+// Match Flags
+//
+#define HALP_CHECK_CARD_REVISION_ID     0x10000
+#define HALP_CHECK_CARD_SUBVENDOR_ID    0x20000
+#define HALP_CHECK_CARD_SUBSYSTEM_ID    0x40000
+
 //
 // Mm PTE/PDE to Hal PTE/PDE
 //