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AMD K8: Move the test for connected HyperTransport link 

Change-Id: I7f8cbfcae7ec2a49e91ceda1eecdcf76b2137d8b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8549
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Kyösti Mälkki 2015-02-04 15:23:03 +02:00
parent e0b6fbde41
commit 11c79d7fc2
1 changed files with 19 additions and 13 deletions
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32
src/northbridge/amd/amdk8/northbridge.c
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@ -79,6 +79,23 @@ static void f1_write_config32(unsigned reg, u32 value)
}
}
static bool is_non_coherent_link(struct device *dev, struct bus *link)
{
u32 link_type;
do {
link_type = pci_read_config32(dev, link->cap + 0x18);
} while (link_type & ConnectionPending);
if (!(link_type & LinkConnected))
return false;
do {
link_type = pci_read_config32(dev, link->cap + 0x18);
} while (!(link_type & InitComplete));
return !!(link_type & NonCoherent);
}
static u32 amdk8_nodeid(device_t dev)
{
return (dev->path.pci.devfn >> 3) - 0x18;
@ -87,8 +104,6 @@ static u32 amdk8_nodeid(device_t dev)
static u32 amdk8_scan_chain(device_t dev, u32 nodeid, struct bus *link, bool is_sblink,
u32 max)
{
u32 link_type;
int i;
u32 busses, config_busses;
u32 free_reg, config_reg;
@ -98,18 +113,9 @@ static u32 amdk8_scan_chain(device_t dev, u32 nodeid, struct bus *link, bool is_
u32 max_devfn;
link->cap = 0x80 + (link->link_num * 0x20);
do {
link_type = pci_read_config32(dev, link->cap + 0x18);
} while(link_type & ConnectionPending);
if (!(link_type & LinkConnected)) {
if (!is_non_coherent_link(dev, link))
return max;
}
do {
link_type = pci_read_config32(dev, link->cap + 0x18);
} while(!(link_type & InitComplete));
if (!(link_type & NonCoherent)) {
return max;
}
/* See if there is an available configuration space mapping
* register in function 1.
*/