summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/northbridge/amd/agesa/family10/northbridge.c3
-rw-r--r--src/northbridge/amd/agesa/family15/northbridge.c4
-rw-r--r--src/northbridge/amd/amdfam10/northbridge.c36
-rw-r--r--src/northbridge/amd/amdk8/northbridge.c37
4 files changed, 37 insertions, 43 deletions
diff --git a/src/northbridge/amd/agesa/family10/northbridge.c b/src/northbridge/amd/agesa/family10/northbridge.c
index 0fe1910577..5938e3275d 100644
--- a/src/northbridge/amd/agesa/family10/northbridge.c
+++ b/src/northbridge/amd/agesa/family10/northbridge.c
@@ -561,7 +561,6 @@ static void amdfam10_scan_chains(device_t dev)
unsigned sblink = sysconf.sblk;
device_t io_hub = NULL;
u32 next_unitid = 0xff;
- unsigned int max = dev->bus->subordinate;
nodeid = amdfam10_nodeid(dev);
if (nodeid == 0) {
@@ -578,8 +577,6 @@ static void amdfam10_scan_chains(device_t dev)
}
max = dev->bus->subordinate;
}
-
- dev->bus->subordinate = max;
}
static struct device_operations northbridge_operations = {
diff --git a/src/northbridge/amd/agesa/family15/northbridge.c b/src/northbridge/amd/agesa/family15/northbridge.c
index 94e16acea6..f13e3981af 100644
--- a/src/northbridge/amd/agesa/family15/northbridge.c
+++ b/src/northbridge/amd/agesa/family15/northbridge.c
@@ -465,7 +465,6 @@ static void scan_chains(device_t dev)
struct bus *link;
device_t io_hub = NULL;
u32 next_unitid = 0x18;
- unsigned int max = dev->bus->subordinate;
nodeid = amdfam15_nodeid(dev);
if (nodeid == 0) {
@@ -481,10 +480,7 @@ static void scan_chains(device_t dev)
pci_scan_bus(link, 0x00, ((next_unitid - 1) << 3) | 7);
}
}
- max = dev->bus->subordinate;
}
-
- dev->bus->subordinate = max;
}
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index bcb6e3f936..e9d12c78e0 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -152,6 +152,15 @@ static void ht_route_link(struct bus *link, scan_state mode)
struct bus *parent = link->dev->bus;
u32 busses;
+ if (mode == HT_ROUTE_SCAN) {
+ if (parent->subordinate == 0)
+ link->secondary = 0;
+ else
+ link->secondary = parent->subordinate + 1;
+
+ link->subordinate = link->secondary;
+ }
+
/* Configure the bus numbers for this bridge: the configuration
* transactions will not be propagated by the bridge if it is
* not correctly configured
@@ -170,9 +179,15 @@ static void ht_route_link(struct bus *link, scan_state mode)
}
pci_write_config32(link->dev, link->cap + 0x14, busses);
+ if (mode == HT_ROUTE_FINAL) {
+ if (CONFIG_HT_CHAIN_DISTRIBUTE)
+ parent->subordinate = ALIGN_UP(link->subordinate, 8) - 1;
+ else
+ parent->subordinate = link->subordinate;
+ }
}
-static u32 amdfam10_scan_chain(struct bus *link, u32 max)
+static void amdfam10_scan_chain(struct bus *link)
{
unsigned int next_unitid;
@@ -180,23 +195,13 @@ static u32 amdfam10_scan_chain(struct bus *link, u32 max)
* register in function 1.
*/
if (get_ht_c_index(link) >= 4)
- return max;
+ return;
/* Set up the primary, secondary and subordinate bus numbers.
* We have no idea how many busses are behind this bridge yet,
* so we set the subordinate bus number to 0xff for the moment.
*/
- if (max != 0)
- max++;
-
- /* One node can have 8 link and segn is the same. */
- if (CONFIG_HT_CHAIN_DISTRIBUTE)
- max = ALIGN_UP(max, 8);
-
- link->secondary = max;
- link->subordinate = link->secondary;
-
ht_route_link(link, HT_ROUTE_SCAN);
/* set the config map space */
@@ -224,8 +229,6 @@ static u32 amdfam10_scan_chain(struct bus *link, u32 max)
set_config_map_reg(link);
store_ht_c_conf_bus(link);
-
- return link->subordinate;
}
/* Do sb ht chain at first, in case s2885 put sb chain
@@ -269,17 +272,14 @@ static void trim_ht_chain(struct device *dev)
static void amdfam10_scan_chains(device_t dev)
{
struct bus *link;
- unsigned int max = dev->bus->subordinate;
/* Do sb ht chain at first, in case s2885 put sb chain (8131/8111) on link2, but put 8151 on link0 */
trim_ht_chain(dev);
for (link = dev->link_list; link; link = link->next) {
if (link->ht_link_up)
- max = amdfam10_scan_chain(link, max);
+ amdfam10_scan_chain(link);
}
-
- dev->bus->subordinate = max;
}
diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c
index 1c62647eb3..9b5735f3dd 100644
--- a/src/northbridge/amd/amdk8/northbridge.c
+++ b/src/northbridge/amd/amdk8/northbridge.c
@@ -91,6 +91,15 @@ static void ht_route_link(struct bus *link, scan_state mode)
struct bus *parent = dev->bus;
u32 busses;
+ if (mode == HT_ROUTE_SCAN) {
+ if (link->dev->bus->subordinate == 0)
+ link->secondary = 0;
+ else
+ link->secondary = parent->subordinate + 1;
+
+ link->subordinate = link->secondary;
+ }
+
/* Configure the bus numbers for this bridge: the configuration
* transactions will not be propagated by the bridge if it is
* not correctly configured
@@ -109,6 +118,13 @@ static void ht_route_link(struct bus *link, scan_state mode)
}
pci_write_config32(link->dev, link->cap + 0x14, busses);
+ if (mode == HT_ROUTE_FINAL) {
+ /* Second chain will be on 0x40, third 0x80, forth 0xc0. */
+ if (CONFIG_HT_CHAIN_DISTRIBUTE)
+ parent->subordinate = ALIGN_UP(link->subordinate, 0x40) - 1;
+ else
+ parent->subordinate = link->subordinate;
+ }
}
static u32 amdk8_nodeid(device_t dev)
@@ -116,7 +132,7 @@ static u32 amdk8_nodeid(device_t dev)
return (dev->path.pci.devfn >> 3) - 0x18;
}
-static u32 amdk8_scan_chain(struct bus *link, u32 max)
+static void amdk8_scan_chain(struct bus *link)
{
unsigned int next_unitid;
int index;
@@ -148,7 +164,7 @@ static u32 amdk8_scan_chain(struct bus *link, u32 max)
* register skip this bus
*/
if (config_reg > 0xec) {
- return max;
+ return;
}
/* Set up the primary, secondary and subordinate bus numbers.
@@ -156,16 +172,6 @@ static u32 amdk8_scan_chain(struct bus *link, u32 max)
* so we set the subordinate bus number to 0xff for the moment.
*/
- if (max != 0)
- max++;
-
- /* Second chain will be on 0x40, third 0x80, forth 0xc0. */
- if (CONFIG_HT_CHAIN_DISTRIBUTE)
- max = ALIGN_UP(max, 0x40);
-
- link->secondary = max;
- link->subordinate = link->secondary;
-
ht_route_link(link, HT_ROUTE_SCAN);
config_busses = f1_read_config32(config_reg);
@@ -199,8 +205,6 @@ static u32 amdk8_scan_chain(struct bus *link, u32 max)
index = (config_reg-0xe0) >> 2;
sysconf.hcdn_reg[index] = link->hcdn_reg;
-
- return link->subordinate;
}
/* Do sb ht chain at first, in case s2885 put sb chain
@@ -244,16 +248,13 @@ static void trim_ht_chain(struct device *dev)
static void amdk8_scan_chains(device_t dev)
{
struct bus *link;
- unsigned int max = dev->bus->subordinate;
trim_ht_chain(dev);
for (link = dev->link_list; link; link = link->next) {
if (link->ht_link_up)
- max = amdk8_scan_chain(link, max);
+ amdk8_scan_chain(link);
}
-
- dev->bus->subordinate = max;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 11:40:22 +0000