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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2015-02-23 00:34:26 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2015-06-05 10:18:05 +0200 |
| commit | 0a3d4e4b03edd272e2025d7acb4d34357671f46b (patch) | |
| tree | 3890e07873ab949341e2795a83a6a42265f0cefe /src/device/hypertransport.c | |
| parent | 3690727955683f0e9eecadac0d7cdc7276e66ade (diff) | |
| download | coreboot-0a3d4e4b03edd272e2025d7acb4d34357671f46b.tar.xz | |
AMD K8 fam10: Refactor HT link connection test
Change-Id: I1e935a6b848a59f7f2e58779bceea599032de9e3
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8562
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Diffstat (limited to 'src/device/hypertransport.c')
| -rw-r--r-- | src/device/hypertransport.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/device/hypertransport.c b/src/device/hypertransport.c index 584ac78457..5aea5e62c4 100644 --- a/src/device/hypertransport.c +++ b/src/device/hypertransport.c @@ -507,6 +507,23 @@ void ht_scan_bridge(struct device *dev) do_pci_scan_bridge(dev, hypertransport_scan_chain_x); } +bool ht_is_non_coherent_link(struct bus *link) +{ + u32 link_type; + do { + link_type = pci_read_config32(link->dev, link->cap + 0x18); + } while (link_type & ConnectionPending); + + if (!(link_type & LinkConnected)) + return false; + + do { + link_type = pci_read_config32(link->dev, link->cap + 0x18); + } while (!(link_type & InitComplete)); + + return !!(link_type & NonCoherent); +} + /** Default device operations for hypertransport bridges */ static struct pci_operations ht_bus_ops_pci = { .set_subsystem = 0, |