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-rw-r--r--src/device/hypertransport.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/src/device/hypertransport.c b/src/device/hypertransport.c
index 5aea5e62c4..07a320db5a 100644
--- a/src/device/hypertransport.c
+++ b/src/device/hypertransport.c
@@ -248,7 +248,7 @@ static void ht_collapse_early_enumeration(struct bus *bus,
}
}
-unsigned int hypertransport_scan_chain(struct bus *bus, unsigned min_devfn,
+static unsigned int do_hypertransport_scan_chain(struct bus *bus, unsigned min_devfn,
unsigned max_devfn,
unsigned *ht_unitid_base,
unsigned offset_unitid)
@@ -477,6 +477,30 @@ end_of_chain:
return next_unitid;
}
+unsigned int hypertransport_scan_chain(struct bus *bus)
+{
+ int i;
+ unsigned int max_devfn;
+ u32 ht_unitid_base[4];
+
+ for (i = 0; i < 4; i++)
+ ht_unitid_base[i] = 0x20;
+
+ if (bus->secondary == 0)
+ max_devfn = (CONFIG_CDB << 3) - 1;
+ else
+ max_devfn = (0x20 << 3) - 1;
+
+ unsigned int next_unitid = do_hypertransport_scan_chain(bus, 0, max_devfn,
+ ht_unitid_base, offset_unit_id(bus->secondary == 0));
+
+ bus->hcdn_reg = 0;
+ for (i = 0; i < 4; i++)
+ bus->hcdn_reg |= (ht_unitid_base[i] & 0xff) << (i*8);
+
+ return next_unitid;
+}
+
/**
* Scan a PCI bridge and the buses behind the bridge.
*
@@ -495,7 +519,7 @@ static void hypertransport_scan_chain_x(struct bus *bus,
unsigned int ht_unitid_base[4];
unsigned int offset_unitid = 1;
- unsigned int next_unitid = hypertransport_scan_chain(bus, min_devfn, max_devfn,
+ unsigned int next_unitid = do_hypertransport_scan_chain(bus, min_devfn, max_devfn,
ht_unitid_base, offset_unitid);
/* Now that nothing is overlapping it is safe to scan the children. */