Fix MMCONF_SUPPORT_DEFAULT for ramstage

Define at one place whether to use IO 0xcf8/0xcfc or MMIO via
MMCONF_BASE_ADDRESS for PCI configuration access funtions in ramstage.

The implementation of pci_default_config() always returned with
pci_cf8_conf1. This means any PCI configuration access that did
not target bus 0 used PCI IO config operations, if PCI MMIO config
was not explicitly requested.

Change-Id: I3b04f570fe88d022cd60dde8bb98e76bd00fe612
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3606
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/arch/x86/include/arch/pci_ops.h

@@ -7,9 +7,19 @@ extern const struct pci_bus_operations pci_cf8_conf1;
 extern const struct pci_bus_operations pci_ops_mmconf;
 #endif
 
+#if CONFIG_MMCONF_SUPPORT_DEFAULT
+#define pci_bus_default_ops &pci_ops_mmconf
+#else
+#define pci_bus_default_ops &pci_cf8_conf1
+#endif
+
 static inline const struct pci_bus_operations *pci_config_default(void)
 {
+#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	return &pci_ops_mmconf;
+#else
 	return &pci_cf8_conf1;
+#endif
 }
 
 static inline void pci_set_method(device_t dev)

src/northbridge/amd/agesa/family10/northbridge.c

@@ -1142,11 +1142,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = amdfam10_domain_enable_resources,
 	.init		  = NULL,
 	.scan_bus	  = amdfam10_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 

src/northbridge/amd/agesa/family15/northbridge.c

@@ -863,12 +863,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = domain_enable_resources,
 	.init		  = NULL,
 	.scan_bus	  = f15_pci_domain_scan_bus,
-
+	.ops_pci_bus	  = pci_bus_default_ops,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 

src/northbridge/amd/agesa/family15tn/northbridge.c

@@ -849,12 +849,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = domain_enable_resources,
 	.init		  = NULL,
 	.scan_bus	  = pci_domain_scan_bus,
-
+	.ops_pci_bus	  = pci_bus_default_ops,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 static void sysconf_init(device_t dev) // first node

src/northbridge/amd/amdfam10/northbridge.c

@@ -1154,11 +1154,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init		  = NULL,
 	.scan_bus	  = amdfam10_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 static void sysconf_init(device_t dev) // first node

src/northbridge/intel/gm45/northbridge.c

@@ -202,11 +202,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init             = mch_domain_init,
 	.scan_bus         = pci_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 

src/northbridge/intel/haswell/northbridge.c

@@ -98,11 +98,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init             = NULL,
 	.scan_bus         = pci_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 static int get_bar(device_t dev, unsigned int index, u32 *base, u32 *len)

src/northbridge/intel/i5000/northbridge.c

@@ -168,11 +168,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init             = NULL,
 	.scan_bus         = pci_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 static void enable_dev(device_t dev)

src/northbridge/intel/i945/northbridge.c

@@ -185,11 +185,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init             = NULL,
 	.scan_bus         = pci_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 static void mc_read_resources(device_t dev)

src/northbridge/intel/sandybridge/northbridge.c

@@ -289,11 +289,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init             = NULL,
 	.scan_bus         = pci_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus	  = pci_bus_default_ops,
-	.ops_pci_bus	  = &pci_ops_mmconf,
-#else
-	.ops_pci_bus	  = &pci_cf8_conf1,
-#endif
 };
 
 static void mc_read_resources(device_t dev)

src/northbridge/intel/sch/northbridge.c

@@ -200,11 +200,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources	= NULL,
 	.init			= NULL,
 	.scan_bus		= pci_domain_scan_bus,
-#if CONFIG_MMCONF_SUPPORT_DEFAULT
+	.ops_pci_bus		= pci_bus_default_ops,
-	.ops_pci_bus		= &pci_ops_mmconf,
-#else
-	.ops_pci_bus		= &pci_cf8_conf1,
-#endif
 };
 
 static void mc_read_resources(device_t dev)

src/northbridge/via/vx900/northbridge.c

@@ -304,8 +304,7 @@ static struct device_operations pci_domain_ops = {
 	.enable_resources = NULL,
 	.init = NULL,
 	.scan_bus = pci_domain_scan_bus,
-	/* We always run with MMCONF enabled. */
+	.ops_pci_bus = pci_bus_default_ops,
-	.ops_pci_bus = &pci_ops_mmconf,
 };
 
 static void cpu_bus_init(device_t dev)