From e7369daba58bb4fad5cef37fefbd851e59446045 Mon Sep 17 00:00:00 2001
From: Egbert Eich <eich@suse.de>
Date: Wed, 9 Feb 2005 11:12:54 +0000
Subject: [PATCH] Added PCI2Host bus translations for linux PPC and fixed fixed
 bugs in     macros that apply these functions (Bill Randle Bugzilla #325 and
 #327).

---
 hw/xfree86/common/xf86pciBus.c       |  6 ++--
 hw/xfree86/os-support/bus/linuxPci.c | 53 ++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 3 deletions(-)

diff --git a/hw/xfree86/common/xf86pciBus.c b/hw/xfree86/common/xf86pciBus.c
index 17fb1b3f2..85f57e96f 100644
--- a/hw/xfree86/common/xf86pciBus.c
+++ b/hw/xfree86/common/xf86pciBus.c
@@ -105,11 +105,11 @@ static PciBusPtr xf86PciBus = NULL;
 #define PCI_MEM32_LENGTH_MAX 0xFFFFFFFF
 
 #define B2M(tag,base) pciBusAddrToHostAddr(tag,PCI_MEM,base)
-#define B2I(tag,base) (base)
+#define B2I(tag,base) pciBusAddrToHostAddr(tag,PCI_IO,base)
 #define B2H(tag,base,type) (((type & ResPhysMask) == ResMem) ? \
 			B2M(tag, base) : B2I(tag, base))
-#define M2B(tag,base) pciHostAddrToBusAddr(tag,PCI_IO,base)
-#define I2B(tag,base) (base)
+#define M2B(tag,base) pciHostAddrToBusAddr(tag,PCI_MEM,base)
+#define I2B(tag,base) pciHostAddrToBusAddr(tag,PCI_IO,base)
 #define H2B(tag,base,type) (((type & ResPhysMask) == ResMem) ? \
 			M2B(tag, base) : I2B(tag, base))
 #define TAG(pvp) (pciTag(pvp->bus,pvp->device,pvp->func))
diff --git a/hw/xfree86/os-support/bus/linuxPci.c b/hw/xfree86/os-support/bus/linuxPci.c
index 23f85e644..1f5e649db 100644
--- a/hw/xfree86/os-support/bus/linuxPci.c
+++ b/hw/xfree86/os-support/bus/linuxPci.c
@@ -59,13 +59,22 @@
 static CARD32 linuxPciCfgRead(PCITAG tag, int off);
 static void linuxPciCfgWrite(PCITAG, int off, CARD32 val);
 static void linuxPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits);
+#if defined(__powerpc__)
+static ADDRESS linuxPpcBusAddrToHostAddr(PCITAG, PciAddrType, ADDRESS);
+static ADDRESS linuxPpcHostAddrToBusAddr(PCITAG, PciAddrType, ADDRESS);
+#endif
 
 static pciBusFuncs_t linuxFuncs0 = {
 /* pciReadLong      */	linuxPciCfgRead,
 /* pciWriteLong     */	linuxPciCfgWrite,
 /* pciSetBitsLong   */	linuxPciCfgSetBits,
+#if defined(__powerpc__)
+/* pciAddrHostToBus */	linuxPpcHostAddrToBusAddr,
+/* pciAddrBusToHost */	linuxPpcBusAddrToHostAddr
+#else
 /* pciAddrHostToBus */	pciAddrNOOP,
 /* pciAddrBusToHost */	pciAddrNOOP
+#endif
 };
 
 static pciBusInfo_t linuxPci0 = {
@@ -192,6 +201,50 @@ linuxPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits)
 	}
 }
 
+#if defined(__powerpc__)
+
+#ifndef __NR_pciconfig_iobase
+#define __NR_pciconfig_iobase   200
+#endif
+
+static ADDRESS
+linuxPpcBusAddrToHostAddr(PCITAG tag, PciAddrType type, ADDRESS addr)
+{
+    if (type == PCI_MEM)
+    {
+	ADDRESS membase = syscall(__NR_pciconfig_iobase, 1,
+		    PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag));
+	return (addr + membase);
+    }
+    else if (type == PCI_IO)
+    {
+	ADDRESS iobase = syscall(__NR_pciconfig_iobase, 2,
+		    PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag));
+	return (addr + iobase);
+    }
+    else return addr;
+}
+
+static ADDRESS
+linuxPpcHostAddrToBusAddr(PCITAG tag, PciAddrType type, ADDRESS addr)
+{
+    if (type == PCI_MEM)
+    {
+	ADDRESS membase = syscall(__NR_pciconfig_iobase, 1,
+		    PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag));
+	return (addr - membase);
+    }
+    else if (type == PCI_IO)
+    {
+	ADDRESS iobase = syscall(__NR_pciconfig_iobase, 2,
+		    PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag));
+	return (addr - iobase);
+    }
+    else return addr;
+}
+
+#endif /* __powerpc__ */
+
 #ifndef INCLUDE_XF86_NO_DOMAIN
 
 /*