eric patch

        1. x86_setup_mtrr take address bit.
        2. generic ht, pcix, pcie beidge...
        3. scan bus and reset_bus
        4. ht read ctrl to decide if the ht chain
           is ready
        5. Intel e7520 and e7525 support
        6. new ich5r support
        7. intel sb 6300 support.

yhlu patch
	1. split x86_setup_mtrrs to fixed and var
	2. if (resource->flags & IORESOURCE_FIXED ) return; in device.c pick_largest_resource
	3. in_conherent.c K8_SCAN_PCI_BUS


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1982 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

4 files changed, 484 insertions, 13 deletions

diff --git a/src/southbridge/amd/amd8111/amd8111_reset.c b/src/southbridge/amd/amd8111/amd8111_reset.c
index 822a1e378f..435904aabd 100644
--- a/src/southbridge/amd/amd8111/amd8111_reset.c
+++ b/src/southbridge/amd/amd8111/amd8111_reset.c
@@ -1,14 +1,15 @@
+/* Include this file in the mainboards reset.c
+ */
 #include <arch/io.h>
+#include <device/pci_ids.h>
 
 #define PCI_DEV(BUS, DEV, FN) ( \
 	(((BUS) & 0xFF) << 16) | \
 	(((DEV) & 0x1f) << 11) | \
 	(((FN)  & 0x7) << 8))
 
-#define AMD8111_RESET PCI_DEV(     \
-		HARD_RESET_BUS,    \
-		HARD_RESET_DEVICE, \
-		HARD_RESET_FUNCTION)
+#define PCI_ID(VENDOR_ID, DEVICE_ID) \
+	((((DEVICE_ID) & 0xFFFF) << 16) | ((VENDOR_ID) & 0xFFFF))
 
 typedef unsigned device_t;
 
@@ -36,10 +37,57 @@ static unsigned pci_read_config32(device_t dev, unsigned where)
         return inl(0xCFC);
 }
 
+#define PCI_DEV_INVALID (0xffffffffU)
+static device_t pci_locate_device(unsigned pci_id, unsigned bus)
+{
+	device_t dev, last;
+	dev = PCI_DEV(bus, 0, 0);
+	last = PCI_DEV(bus, 31, 7);
+	for(; dev <= last; dev += PCI_DEV(0,0,1)) {
+		unsigned int id;
+		id = pci_read_config32(dev, 0);
+		if (id == pci_id) {
+			return dev;
+		}
+	}
+	return PCI_DEV_INVALID;
+}
+
 #include "../../../northbridge/amd/amdk8/reset_test.c"
 
-void hard_reset(void)
+static unsigned node_link_to_bus(unsigned node, unsigned link)
 {
+	unsigned reg;
+
+	for(reg = 0xE0; reg < 0xF0; reg += 0x04) {
+		unsigned config_map;
+		config_map = pci_read_config32(PCI_DEV(0, 0x18, 1), reg);
+		if ((config_map & 3) != 3) {
+			continue;
+		}
+		if ((((config_map >> 4) & 7) == node) &&
+			(((config_map >> 8) & 3) == link)) 
+		{
+			return (config_map >> 16) & 0xff;
+		}
+	}
+	return 0;
+}
+
+static void amd8111_hard_reset(unsigned node, unsigned link)
+{
+	device_t dev;
+	unsigned bus;
+
+	/* Find the device.
+	 * There can only be one 8111 on a hypertransport chain/bus.
+	 */
+	bus = node_link_to_bus(node, link);
+	dev = pci_locate_device(
+		PCI_ID(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_ISA), 
+		bus);
+
+	/* Reset */
 	set_bios_reset();
-	pci_write_config8(AMD8111_RESET, 0x47, 1);
+	pci_write_config8(dev, 0x47, 1);
 }
diff --git a/src/southbridge/amd/amd8131-disable/Config.lb b/src/southbridge/amd/amd8131-disable/Config.lb
new file mode 100644
index 0000000000..9968e9ad1d
--- /dev/null
+++ b/src/southbridge/amd/amd8131-disable/Config.lb
@@ -0,0 +1 @@
+driver amd8131_bridge.o
diff --git a/src/southbridge/amd/amd8131-disable/amd8131_bridge.c b/src/southbridge/amd/amd8131-disable/amd8131_bridge.c
new file mode 100644
index 0000000000..648dbba250
--- /dev/null
+++ b/src/southbridge/amd/amd8131-disable/amd8131_bridge.c
@@ -0,0 +1,116 @@
+/*
+ * (C) 2004 Linux Networx
+ */
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <pc80/mc146818rtc.h>
+
+static void amd8131_bus_read_resources(device_t dev)
+{
+	return;
+}
+
+static void amd8131_bus_set_resources(device_t dev)
+{
+#if 0
+	pci_bus_read_resources(dev);
+#endif
+	return;
+}
+
+static void amd8131_bus_enable_resources(device_t dev)
+{
+#if 0
+	pci_dev_set_resources(dev);
+#endif
+	return;
+}
+
+static void amd8131_bus_init(device_t dev)
+{
+#if 0
+	pcix_init(dev);
+#endif
+	return;
+}
+
+static unsigned int amd8131_scan_bus(device_t bus, unsigned int max)
+{
+#if 0
+	max = pcix_scan_bridge(bus, max);
+#endif
+	return max;
+}
+
+static void amd8131_enable(device_t dev)
+{
+	uint32_t buses;
+	uint16_t cr;
+
+	/* Clear all status bits and turn off memory, I/O and master enables. */
+	pci_write_config16(dev, PCI_COMMAND, 0x0000);
+	pci_write_config16(dev, PCI_STATUS, 0xffff);
+
+	/*
+	 * Read the existing primary/secondary/subordinate bus
+	 * number configuration.
+	 */
+	buses = pci_read_config32(dev, PCI_PRIMARY_BUS);
+
+	/* Configure the bus numbers for this bridge: the configuration
+	 * transactions will not be propagated by the bridge if it is not
+	 * correctly configured.
+	 */
+	buses &= 0xff000000;
+	buses |= (((unsigned int) (dev->bus->secondary) << 0) |
+		((unsigned int) (dev->bus->secondary) << 8) |
+		((unsigned int) (dev->bus->secondary) << 16));
+	pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
+}
+
+static struct device_operations pcix_ops  = {
+        .read_resources   = amd8131_bus_read_resources,
+        .set_resources    = amd8131_bus_set_resources,
+	.enable_resources = amd8131_bus_enable_resources,
+        .init             = amd8131_bus_init,
+	.scan_bus         = 0,
+	.enable           = amd8131_enable,
+};
+
+static struct pci_driver pcix_driver __pci_driver = {
+        .ops    = &pcix_ops,
+        .vendor = PCI_VENDOR_ID_AMD,
+        .device = 0x7450,
+};
+
+
+static void ioapic_enable(device_t dev)
+{
+	uint32_t value;
+	value = pci_read_config32(dev, 0x44);
+	if (dev->enabled) {
+		value |= ((1 << 1) | (1 << 0));
+	} else {
+		value &= ~((1 << 1) | (1 << 0));
+	}
+	pci_write_config32(dev, 0x44, value);
+}
+
+static struct device_operations ioapic_ops = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init     = 0,
+	.scan_bus = 0,
+	.enable   = ioapic_enable,
+};
+
+static struct pci_driver ioapic_driver __pci_driver = {
+	.ops    = &ioapic_ops,
+	.vendor = PCI_VENDOR_ID_AMD,
+	.device = 0x7451,
+	
+};
diff --git a/src/southbridge/amd/amd8131/amd8131_bridge.c b/src/southbridge/amd/amd8131/amd8131_bridge.c
index 357059d347..828b083f2e 100644
--- a/src/southbridge/amd/amd8131/amd8131_bridge.c
+++ b/src/southbridge/amd/amd8131/amd8131_bridge.c
@@ -7,10 +7,273 @@
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
 #include <pc80/mc146818rtc.h>
+#include <device/pci_def.h>
+#include <device/pcix.h>
 
 #define NMI_OFF 0
 
-static void pcix_init(device_t dev)
+#define NPUML 0xD9	/* Non prefetchable upper memory limit */
+#define NPUMB 0xD8	/* Non prefetchable upper memory base */
+
+static void amd8131_walk_children(struct bus *bus,
+	void (*visit)(device_t dev, void *ptr), void *ptr)
+{
+	device_t child;
+	for(child = bus->children; child; child = child->sibling)
+	{
+		if (child->path.type != DEVICE_PATH_PCI) {
+			continue;
+		}
+		if (child->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+			amd8131_walk_children(&child->link[0], visit, ptr);
+		}
+		visit(child, ptr);
+	}
+}
+
+struct amd8131_bus_info {
+	unsigned sstatus;
+	unsigned rev;
+	int errata_56;
+	int master_devices;
+	int max_func;
+};
+
+static void amd8131_count_dev(device_t dev, void *ptr)
+{
+	struct amd8131_bus_info *info = ptr;
+	/* Don't count pci bridges */
+	if (dev->hdr_type != PCI_HEADER_TYPE_BRIDGE) {
+		info->master_devices++;
+	}
+	if (PCI_FUNC(dev->path.u.pci.devfn) > info->max_func) {
+		info->max_func = PCI_FUNC(dev->path.u.pci.devfn);
+	}
+}
+
+
+static void amd8131_pcix_tune_dev(device_t dev, void *ptr)
+{
+	struct amd8131_bus_info *info = ptr;
+	unsigned cap;
+	unsigned status, cmd, orig_cmd;
+	unsigned max_read, max_tran;
+	int sib_funcs, sibs;
+	device_t sib;
+
+	if (dev->hdr_type != PCI_HEADER_TYPE_NORMAL) {
+		return;
+	}
+	cap = pci_find_capability(dev, PCI_CAP_ID_PCIX);
+	if (!cap) {
+		return;
+	}
+	/* How many siblings does this device have? */
+	sibs = info->master_devices - 1;
+	/* Count how many sibling functions this device has */
+	sib_funcs = 0;
+	for(sib = dev->bus->children; sib; sib = sib->sibling) {
+		if (sib == dev) {
+			continue;
+		}
+		if (PCI_SLOT(sib->path.u.pci.devfn) != PCI_SLOT(dev->path.u.pci.devfn)) {
+			continue;
+		}
+		sib_funcs++;
+	}
+
+
+	printk_debug("%s AMD8131 PCI-X tuning\n", dev_path(dev));
+	status = pci_read_config32(dev, cap + PCI_X_STATUS);
+	orig_cmd = cmd = pci_read_config16(dev,cap + PCI_X_CMD);
+
+	max_read = (status & PCI_X_STATUS_MAX_READ) >> 21;
+	max_tran = (status & PCI_X_STATUS_MAX_SPLIT) >> 23;
+
+	/* Errata #49 don't allow 4K transactions */
+	if (max_read >= 2) {
+		max_read = 2;
+	}
+
+	/* Errata #37 Limit the number of split transactions to avoid starvation */
+	if (sibs >= 2) {
+		/* At most 2 outstanding split transactions when we have
+		 * 3 or more bus master devices on the bus.
+		 */
+		if (max_tran > 1) {
+			max_tran = 1;
+		}
+	}
+	else if (sibs == 1) {
+		/* At most 4 outstanding split transactions when we have
+		 * 2 bus master devices on the bus.
+		 */
+		if (max_tran > 3) {
+			max_tran = 3;
+		}
+	}
+	else {
+		/* At most 8 outstanding split transactions when we have
+		 * only one bus master device on the bus.
+		 */
+		if (max_tran > 4) {
+			max_tran = 4;
+		}
+	}
+	/* Errata #56 additional limits when the bus runs at 133Mhz */
+	if (info->errata_56 && 
+		(PCI_X_SSTATUS_MFREQ(info->sstatus) == PCI_X_SSTATUS_MODE1_133MHZ))
+	{
+		unsigned limit_read;
+		/* Look at the number of siblings and compute the
+		 * largest legal read size.
+		 */
+		if (sib_funcs == 0) {
+			/* 2k reads */
+			limit_read = 2;
+		} 
+		else if (sib_funcs <= 1) {
+			/* 1k reads */
+			limit_read = 1;
+		}
+		else {
+			/* 512 byte reads */
+			limit_read = 0;
+		}
+		if (max_read > limit_read) {
+			max_read = limit_read;
+		}
+		/* Look at the read size and the nubmer of siblings
+		 * and compute how many outstanding transactions I can have.
+		 */
+		if (max_read == 2) {
+			/* 2K reads */
+			if (max_tran > 0) {
+				/* Only 1 outstanding transaction allowed */
+				max_tran = 0;
+			}
+		}
+		else if (max_read == 1) {
+			/* 1K reads */
+			if (max_tran > (1 - sib_funcs)) {
+				/* At most 2 outstanding transactions */
+				max_tran = 1 - sib_funcs;
+			}
+		}
+		else {
+			/* 512 byte reads */
+			max_read = 0;
+			if (max_tran > (2 - sib_funcs)) {
+				/* At most 3 outstanding transactions */
+				max_tran = 2 - sib_funcs;
+			}
+		}
+	}
+#if 0
+	printk_debug("%s max_read: %d max_tran: %d sibs: %d sib_funcs: %d\n",
+		dev_path(dev), max_read, max_tran, sibs, sib_funcs, sib_funcs);
+#endif
+	if (max_read != ((cmd & PCI_X_CMD_MAX_READ) >> 2)) {
+		cmd &= ~PCI_X_CMD_MAX_READ;
+		cmd |= max_read << 2;
+		}
+	if (max_tran != ((cmd & PCI_X_CMD_MAX_SPLIT) >> 4)) {
+		cmd &= ~PCI_X_CMD_MAX_SPLIT;
+		cmd |= max_tran << 4;
+	}
+
+	/* Don't attempt to handle PCI-X errors */
+	cmd &= ~PCI_X_CMD_DPERR_E;
+	/* The 8131 does not work properly with relax ordering enabled.
+	 * Errata #58
+	 */
+	cmd &= ~PCI_X_CMD_ERO;
+	if (orig_cmd != cmd) {
+		pci_write_config16(dev, cap + PCI_X_CMD, cmd);
+	}
+}
+static unsigned int amd8131_scan_bus(struct bus *bus,
+	unsigned min_devfn, unsigned max_devfn, unsigned int max)
+{
+	struct amd8131_bus_info info;
+	struct bus *pbus;
+	unsigned pos;
+
+
+	/* Find the children on the bus */
+	max = pci_scan_bus(bus, min_devfn, max_devfn, max);
+
+	/* Find the revision of the 8131 */
+	info.rev = pci_read_config8(bus->dev, PCI_CLASS_REVISION);
+
+	/* See which errata apply */
+	info.errata_56 = info.rev <= 0x12;
+
+	/* Find the pcix capability and get the secondary bus status */
+	pos = pci_find_capability(bus->dev, PCI_CAP_ID_PCIX);
+	info.sstatus = pci_read_config16(bus->dev, pos + PCI_X_SEC_STATUS);
+
+	/* Print the PCI-X bus speed */
+	printk_debug("PCI: %02x: %s\n", bus->secondary, pcix_speed(info.sstatus));
+
+
+	/* Examine the bus and find out how loaded it is */
+	info.max_func = 0;
+	info.master_devices  = 0;
+	amd8131_walk_children(bus, amd8131_count_dev, &info);
+
+	/* Disable the bus if there are no devices on it or
+	 * we are running at 133Mhz and have a 4 function device.
+	 * see errata #56
+	 */
+	if (!bus->children || 
+		(info.errata_56 && 
+			(info.max_func >= 3) &&
+			(PCI_X_SSTATUS_MFREQ(info.sstatus) == PCI_X_SSTATUS_MODE1_133MHZ)))
+	{
+		unsigned pcix_misc;
+		/* Disable all of my children */
+		disable_children(bus);
+
+		/* Remember the device is disabled */
+		bus->dev->enabled = 0;
+
+		/* Disable the PCI-X clocks */
+		pcix_misc = pci_read_config32(bus->dev, 0x40);
+		pcix_misc &= ~(0x1f << 16);
+		pci_write_config32(bus->dev, 0x40, pcix_misc);
+		
+		return max;
+	}
+
+	/* If we are in conventional PCI mode nothing more is necessary.
+	 */
+	if (PCI_X_SSTATUS_MFREQ(info.sstatus) == PCI_X_SSTATUS_CONVENTIONAL_PCI) {
+		return max;
+	}
+
+
+	/* Tune the devices on the bus */
+	amd8131_walk_children(bus, amd8131_pcix_tune_dev, &info);
+
+	/* Don't allow the 8131 or any of it's parent busses to
+	 * implement relaxed ordering.  Errata #58
+	 */
+	for(pbus = bus; !pbus->disable_relaxed_ordering; pbus = pbus->dev->bus) {
+		printk_spew("%s disabling relaxed ordering\n",
+			bus_path(pbus));
+		pbus->disable_relaxed_ordering = 1;
+	}
+	return max;
+}
+
+static unsigned int amd8131_scan_bridge(device_t dev, unsigned int max)
+{
+	return do_pci_scan_bridge(dev, max, amd8131_scan_bus);
+}
+
+
+static void amd8131_pcix_init(device_t dev)
 {
 	uint32_t dword;
 	uint16_t word;
@@ -24,18 +287,19 @@ static void pcix_init(device_t dev)
  	
 	/* Set drive strength */
 	word = pci_read_config16(dev, 0xe0);
-        word = 0x0808;
+        word = 0x0404;
         pci_write_config16(dev, 0xe0, word);
 	word = pci_read_config16(dev, 0xe4);
-        word = 0x0808;
+        word = 0x0404;
         pci_write_config16(dev, 0xe4, word);
 	
 	/* Set impedance */
 	word = pci_read_config16(dev, 0xe8);
-        word = 0x0f0f;
+        word = 0x0404;
         pci_write_config16(dev, 0xe8, word);
 
 	/* Set discard unrequested prefetch data */
+	/* Errata #51 */
 	word = pci_read_config16(dev, 0x4c);
         word |= 1;
         pci_write_config16(dev, 0x4c, word);
@@ -76,16 +340,58 @@ static void pcix_init(device_t dev)
 		dword |= (1<<1);
 		pci_write_config32(dev, 0xc8, dword);
 	}
-	
 	return;
 }
 
+#define BRIDGE_40_BIT_SUPPORT 0
+#if BRIDGE_40_BIT_SUPPORT
+static void bridge_read_resources(struct device *dev)
+{
+	struct resource *res;
+	pci_bus_read_resources(dev);
+	res = find_resource(dev, PCI_MEMORY_BASE);	
+	if (res) {
+		res->limit = 0xffffffffffULL;
+	}
+}
+
+static void bridge_set_resources(struct device *dev)
+{
+	struct resource *res;
+	res = find_resource(dev, PCI_MEMORY_BASE);
+	if (res) {
+		resource_t base, end;
+		/* set the memory range */
+		dev->command |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
+		res->flags |= IORESOURCE_STORED;
+		compute_allocate_resource(&dev->link[0], res,
+			IORESOURCE_MEM | IORESOURCE_PREFETCH,
+			IORESOURCE_MEM);
+		base = res->base;
+		end  = resource_end(res);
+		pci_write_config16(dev, PCI_MEMORY_BASE, base >> 16);
+		pci_write_config8(dev, NPUML, (base >> 32) & 0xff);
+		pci_write_config16(dev, PCI_MEMORY_LIMIT, end >> 16);
+		pci_write_config8(dev, NPUMB, (end >> 32) & 0xff);
+
+		report_resource_stored(dev, res, "");
+	}
+	pci_dev_set_resources(dev);
+}
+#endif /* BRIDGE_40_BIT_SUPPORT */
+
 static struct device_operations pcix_ops  = {
+#if BRIDGE_40_BIT_SUPPORT
+        .read_resources   = bridge_read_resources,
+        .set_resources    = bridge_set_resources,
+#else
         .read_resources   = pci_bus_read_resources,
         .set_resources    = pci_dev_set_resources,
+#endif
 	.enable_resources = pci_bus_enable_resources,
-        .init             = pcix_init,
-        .scan_bus         = pci_scan_bridge,
+        .init             = amd8131_pcix_init,
+        .scan_bus         = amd8131_scan_bridge,
+	.reset_bus        = pci_bus_reset,
 };
 
 static struct pci_driver pcix_driver __pci_driver = {