===================================================================
@@ -1081,7 +1081,9 @@ unsigned int pci_scan_bus(struct bus *bu
* scan the bus behind that child.
*/
for (child = bus->children; child; child = child->sibling) {
+ printk_debug("before scan bus of %s\n", dev_path(child));
max = scan_bus(child, max);
+ printk_debug("after scan bus of %s\n", dev_path(child));
}
/* We've scanned the bus and so we know all about what's on the other
===================================================================
@@ -93,19 +93,29 @@ static unsigned int amdk8_scan_chain(dev
unsigned min_bus;
unsigned max_devfn;
+ printk_debug("%s: %s, node %d, link %d\n", __func__,
+ dev_path(dev), nodeid, link);
+
dev->link[link].cap = 0x80 + (link *0x20);
+ if (pci_read_config32(dev, dev->link[link].cap + 0x18) &
+ ConnectionPending)
+ printk_debug("%s: connection pending %s link %d\n",
+ __func__, dev_path(dev), link);
do {
link_type = pci_read_config32(dev, dev->link[link].cap + 0x18);
} while(link_type & ConnectionPending);
if (!(link_type & LinkConnected)) {
return max;
}
+ printk_debug("connected\n");
do {
link_type = pci_read_config32(dev, dev->link[link].cap + 0x18);
} while(!(link_type & InitComplete));
+ printk_debug("Init Complete\n");
if (!(link_type & NonCoherent)) {
return max;
}
+ printk_debug("non coherent\n");
/* See if there is an available configuration space mapping
* register in function 1.
*/
@@ -199,6 +209,7 @@ static unsigned int amdk8_scan_chain(dev
else
max_devfn = (0x1f<<3) | 7;
+ printk_debug("scan chain\n");
max = hypertransport_scan_chain(&dev->link[link], 0, max_devfn, max, ht_unitid_base, offset_unitid);
/* We know the number of busses behind this bridge. Set the
@@ -237,6 +248,8 @@ static unsigned int amdk8_scan_chains(de
unsigned offset_unitid = 0;
nodeid = amdk8_nodeid(dev);
+ printk_debug("%s: %s, node %d\n", __func__,
+ dev_path(dev), nodeid);
if(nodeid==0) {
sblink = (pci_read_config32(dev, 0x64)>>8) & 3;
#if CONFIG_SB_HT_CHAIN_ON_BUS0 > 0
@@ -248,6 +261,8 @@ static unsigned int amdk8_scan_chains(de
}
for(link = 0; link < dev->links; link++) {
+ printk_debug("%s: %s, node %d, link %d\n", __func__,
+ dev_path(dev), nodeid, link);
#if CONFIG_SB_HT_CHAIN_ON_BUS0 > 0
if( (nodeid == 0) && (sblink == link) ) continue; //already done
#endif
===================================================================
@@ -299,6 +299,11 @@ static void ht_collapse_early_enumeratio
prev.freq_off = PCI_HT_CAP_HOST_FREQ;
prev.freq_cap_off = PCI_HT_CAP_HOST_FREQ_CAP;
+ printk_debug("%s: %s children %s offset_unitid %d\n", __func__,
+ dev_path(bus->dev), dev_path(bus->children), offset_unitid);
+ printk_debug("%s: ctrl = %x\n", __func__,
+ pci_read_config16(prev.dev, prev.pos + prev.ctrl_off));
+
/* Wait until the link initialization is complete */
do {
ctrl = pci_read_config16(prev.dev, prev.pos + prev.ctrl_off);
@@ -401,6 +406,8 @@ unsigned int hypertransport_scan_chain(s
/* Restore the hypertransport chain to it's unitialized state */
ht_collapse_early_enumeration(bus, offset_unitid);
+ printk_debug("%s: %s children %s offset_unitid %d\n", __func__,
+ dev_path(bus->dev), dev_path(bus->children), offset_unitid);
/* See which static device nodes I have */
old_devices = bus->children;
bus->children = 0;
@@ -449,10 +456,13 @@ unsigned int hypertransport_scan_chain(s
}
} while((ctrl & (1 << 5)) == 0);
+ printk_debug("%s: link OK\n", __func__);
/* Get and setup the device_structure */
dev = ht_scan_get_devs(&old_devices);
+ printk_debug("%s: dev = %s\n", dev_path(dev));
+ printk_debug("%s: old_devs = %s\n", dev_path(old_devices));
/* See if a device is present and setup the
* device structure.
*/