diff options
| author | Oliver O'Halloran <oohall@gmail.com> | 2020-03-06 18:39:03 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-03-25 12:09:39 +1100 |
| commit | b6eebb093cad0feb56c717611ee0d2d7c66b4ec7 (patch) | |
| tree | 350aaffbb9bed493107f6e368092ea25788514a9 /drivers | |
| parent | 3ff32efb62b624e4c07d002ffb294d209689bedd (diff) | |
| download | linux-b6eebb093cad0feb56c717611ee0d2d7c66b4ec7.tar.gz | |
powerpc/eeh: Make early EEH init pseries specific
The eeh_ops->probe() function is called from two different contexts:
1. On pseries, where we set EEH_PROBE_MODE_DEVTREE, it's called in
eeh_add_device_early() which is supposed to run before we create
a pci_dev.
2. On PowerNV, where we set EEH_PROBE_MODE_DEV, it's called in
eeh_device_add_late() which is supposed to run *after* the
pci_dev is created.
The "early" probe is required because PAPR requires that we perform an RTAS
call to enable EEH support on a device before we start interacting with it
via config space or MMIO. This requirement doesn't exist on PowerNV and
shoehorning two completely separate initialisation paths into a common
interface just results in a convoluted code everywhere.
Additionally the early probe requires the probe function to take an pci_dn
rather than a pci_dev argument. We'd like to make pci_dn a pseries specific
data structure since there's no real requirement for them on PowerNV. To
help both goals move the early probe into the pseries containment zone
so the platform depedence is more explicit.
Reviewed-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200306073904.4737-5-oohall@gmail.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/hotplug/rpadlpar_core.c | 2 | ||||
| -rw-r--r-- | drivers/pci/hotplug/rpaphp_core.c | 2 | ||||
| -rw-r--r-- | drivers/pci/hotplug/rpaphp_pci.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index 977946e4e613..c5eb509c72f0 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -140,7 +140,7 @@ static void dlpar_pci_add_bus(struct device_node *dn) struct pci_controller *phb = pdn->phb; struct pci_dev *dev = NULL; - eeh_add_device_tree_early(pdn); + pseries_eeh_init_edev_recursive(pdn); /* Add EADS device to PHB bus, adding new entry to bus->devices */ dev = of_create_pci_dev(dn, phb->bus, pdn->devfn); diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 392a936c17de..6504869efabc 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -493,7 +493,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot) return retval; if (state == PRESENT) { - eeh_add_device_tree_early(PCI_DN(slot->dn)); + pseries_eeh_init_edev_recursive(PCI_DN(slot->dn)); pci_lock_rescan_remove(); pci_hp_add_devices(slot->bus); diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c index 61ebbd832afb..c380bdacd146 100644 --- a/drivers/pci/hotplug/rpaphp_pci.c +++ b/drivers/pci/hotplug/rpaphp_pci.c @@ -96,7 +96,7 @@ int rpaphp_enable_slot(struct slot *slot) } if (list_empty(&bus->devices)) { - eeh_add_device_tree_early(PCI_DN(slot->dn)); + pseries_eeh_init_edev_recursive(PCI_DN(slot->dn)); pci_hp_add_devices(bus); } |