New patch to review for coreboot: a2a856e AMD K8 fam10: Drop extra HT scan_chain parameters
Kyösti Mälkki (kyosti.malkki@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8565
-gerrit
commit a2a856e20689bbbff2d0ead4b9b20dac8b9581ea Author: Kyösti Mälkki kyosti.malkki@gmail.com Date: Sun Feb 22 08:27:13 2015 +0200
AMD K8 fam10: Drop extra HT scan_chain parameters
Change-Id: Ice7cb89c19585cf725b6f73c33443050f8d65418 Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com --- src/device/hypertransport.c | 28 ++++++++++++++++++++++++++-- src/include/device/hypertransport.h | 3 +-- src/northbridge/amd/amdfam10/northbridge.c | 23 +---------------------- src/northbridge/amd/amdk8/northbridge.c | 23 +++-------------------- 4 files changed, 31 insertions(+), 46 deletions(-)
diff --git a/src/device/hypertransport.c b/src/device/hypertransport.c index 40cc2d5..ec0601b 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 int max, unsigned *ht_unitid_base, unsigned offset_unitid) @@ -479,6 +479,30 @@ end_of_chain: return max; }
+unsigned int hypertransport_scan_chain(struct bus *bus, unsigned int max) +{ + 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; + + max = do_hypertransport_scan_chain(bus, 0, max_devfn, max, + 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 max; +} + /** * Scan a PCI bridge and the buses behind the bridge. * @@ -498,7 +522,7 @@ static unsigned int hypertransport_scan_chain_x(struct bus *bus, { unsigned int ht_unitid_base[4]; unsigned int offset_unitid = 1; - return hypertransport_scan_chain(bus, min_devfn, max_devfn, max, + return do_hypertransport_scan_chain(bus, min_devfn, max_devfn, max, ht_unitid_base, offset_unitid); }
diff --git a/src/include/device/hypertransport.h b/src/include/device/hypertransport.h index 0080e8d..6034b27 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 int max, unsigned *ht_unit_base, unsigned offset_unitid); +unsigned int hypertransport_scan_chain(struct bus *bus, unsigned int max); unsigned int ht_scan_bridge(struct device *dev, unsigned int max); 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 612c9a6..cf47a78 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -154,12 +154,6 @@ static void ht_route_link(struct bus *link)
static u32 amdfam10_scan_chain(struct bus *link, u32 max) { - int i; - u32 ht_unitid_base[4]; // here assume only 4 HT device on chain - u32 max_devfn; - - u32 nodeid = amdfam10_nodeid(link->dev); - /* See if there is an available configuration space mapping * register in function 1. */ @@ -189,17 +183,7 @@ 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; - - max = hypertransport_scan_chain(link, 0, max_devfn, max, ht_unitid_base, offset_unit_id(link->secondary == 0)); + max = hypertransport_scan_chain(link, max);
/* We know the number of busses behind this bridge. Set the * subordinate bus number to it's real value @@ -213,11 +197,6 @@ 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 max; } diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c index 4b47eba..872be51 100644 --- a/src/northbridge/amd/amdk8/northbridge.c +++ b/src/northbridge/amd/amdk8/northbridge.c @@ -102,11 +102,9 @@ static u32 amdk8_nodeid(device_t dev)
static u32 amdk8_scan_chain(struct bus *link, u32 max) { - int i; + 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);
@@ -167,16 +165,7 @@ 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; - - max = hypertransport_scan_chain(link, 0, max_devfn, max, ht_unitid_base, offset_unit_id(link->secondary == 0)); + max = hypertransport_scan_chain(link, max);
/* We know the number of busses behind this bridge. Set the * subordinate bus number to it's real value @@ -189,13 +178,7 @@ 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 max;
-
Kyösti Mälkki