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-rw-r--r--src/device/hypertransport.c28
-rw-r--r--src/include/device/hypertransport.h3
-rw-r--r--src/northbridge/amd/amdfam10/northbridge.c19
-rw-r--r--src/northbridge/amd/amdk8/northbridge.c22
4 files changed, 31 insertions, 41 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. */
diff --git a/src/include/device/hypertransport.h b/src/include/device/hypertransport.h
index b2ebecfdb1..bc8ccd48a4 100644
--- a/src/include/device/hypertransport.h
+++ b/src/include/device/hypertransport.h
@@ -10,8 +10,7 @@
#define ConnectionPending (1 << 4)
bool ht_is_non_coherent_link(struct bus *link);
-unsigned int hypertransport_scan_chain(struct bus *bus,
- unsigned min_devfn, unsigned max_devfn, unsigned *ht_unit_base, unsigned offset_unitid);
+unsigned int hypertransport_scan_chain(struct bus *bus);
void ht_scan_bridge(struct device *dev);
extern struct device_operations default_ht_ops_bus;
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index 26a835b545..bcb6e3f936 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -174,10 +174,7 @@ static void ht_route_link(struct bus *link, scan_state mode)
static u32 amdfam10_scan_chain(struct bus *link, u32 max)
{
- int i;
unsigned int next_unitid;
- u32 ht_unitid_base[4]; // here assume only 4 HT device on chain
- u32 max_devfn;
/* See if there is an available configuration space mapping
* register in function 1.
@@ -208,17 +205,8 @@ static u32 amdfam10_scan_chain(struct bus *link, u32 max)
/* Now we can scan all of the subordinate busses i.e. the
* chain on the hypertranport link
*/
- for(i=0;i<4;i++) {
- ht_unitid_base[i] = 0x20;
- }
- //if ext conf is enabled, only need use 0x1f
- if (link->secondary == 0)
- max_devfn = (0x17<<3) | 7;
- else
- max_devfn = (0x1f<<3) | 7;
-
- next_unitid = hypertransport_scan_chain(link, 0, max_devfn, ht_unitid_base, offset_unit_id(link->secondary == 0));
+ next_unitid = hypertransport_scan_chain(link);
/* Now that nothing is overlapping it is safe to scan the children. */
pci_scan_bus(link, 0x00, ((next_unitid - 1) << 3) | 7);
@@ -235,11 +223,6 @@ static u32 amdfam10_scan_chain(struct bus *link, u32 max)
set_config_map_reg(link);
- /* Use ht_unitid_base to update hcdn_reg. */
- link->hcdn_reg = 0;
- for (i = 0; i < 4;i++)
- link->hcdn_reg |= (ht_unitid_base[i] & 0xff) << (i*8);
-
store_ht_c_conf_bus(link);
return link->subordinate;
diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c
index 2783ad1302..1c62647eb3 100644
--- a/src/northbridge/amd/amdk8/northbridge.c
+++ b/src/northbridge/amd/amdk8/northbridge.c
@@ -118,12 +118,10 @@ static u32 amdk8_nodeid(device_t dev)
static u32 amdk8_scan_chain(struct bus *link, u32 max)
{
- int i;
unsigned int next_unitid;
+ int index;
u32 config_busses;
u32 free_reg, config_reg;
- u32 ht_unitid_base[4]; // here assume only 4 HT device on chain
- u32 max_devfn;
u32 nodeid = amdk8_nodeid(link->dev);
/* See if there is an available configuration space mapping
@@ -183,16 +181,8 @@ static u32 amdk8_scan_chain(struct bus *link, u32 max)
/* Now we can scan all of the subordinate busses i.e. the
* chain on the hypertranport link
*/
- for(i=0;i<4;i++) {
- ht_unitid_base[i] = 0x20;
- }
-
- if (link->secondary == 0)
- max_devfn = (0x17<<3) | 7;
- else
- max_devfn = (0x1f<<3) | 7;
- next_unitid = hypertransport_scan_chain(link, 0, max_devfn, ht_unitid_base, offset_unit_id(link->secondary == 0));
+ next_unitid = hypertransport_scan_chain(link);
/* Now that nothing is overlapping it is safe to scan the children. */
pci_scan_bus(link, 0x00, ((next_unitid - 1) << 3) | 7);
@@ -207,13 +197,7 @@ static u32 amdk8_scan_chain(struct bus *link, u32 max)
(link->subordinate << 24);
f1_write_config32(config_reg, config_busses);
-
- // use config_reg and ht_unitid_base to update hcdn_reg
- link->hcdn_reg = 0;
- for (i = 0; i < 4; i++)
- link->hcdn_reg |= (ht_unitid_base[i] & 0xff) << (i*8);
-
- int index = (config_reg-0xe0) >> 2;
+ index = (config_reg-0xe0) >> 2;
sysconf.hcdn_reg[index] = link->hcdn_reg;
return link->subordinate;