Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-17 09:31:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

thunderbolt: Add downstream PCIe port mappings for Alpine and Titan Ridge

Browse Source 
In order to keep PCIe hierarchies consistent across hotplugs, add
hard-coded PCIe downstream port to Thunderbolt port for Alpine Ridge and
Titan Ridge as well.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Mika Westerberg 2019-03-22 15:16:53 +02:00
parent 17a8f815a0
commit 7bffd97eb7
2 changed files with 29 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/thunderbolt/tb.c
View File

@ -342,10 +342,13 @@ static struct tb_port *tb_find_pcie_down(struct tb_switch *sw,
* Hard-coded Thunderbolt port to PCIe down port mapping
* per controller.
*/
if (tb_switch_is_cactus_ridge(sw))
if (tb_switch_is_cactus_ridge(sw) ||
tb_switch_is_alpine_ridge(sw))
index = !phy_port ? 6 : 7;
else if (tb_switch_is_falcon_ridge(sw))
index = !phy_port ? 6 : 8;
else if (tb_switch_is_titan_ridge(sw))
index = !phy_port ? 8 : 9;
else
goto out;

25
drivers/thunderbolt/tb.h
View File

@ -608,6 +608,31 @@ static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
}
}
static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
{
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
return true;
default:
return false;
}
}
static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
{
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
return true;
default:
return false;
}
}
/**
* tb_switch_is_icm() - Is the switch handled by ICM firmware
* @sw: Switch to check