diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/eeh.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/eeh_pe.c | 22 |
2 files changed, 24 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 8e61d717915e..58c598400028 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -750,14 +750,14 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat eeh_pe_state_clear(pe, EEH_PE_ISOLATED); break; case pcie_hot_reset: - eeh_pe_state_mark(pe, EEH_PE_ISOLATED); + eeh_pe_state_mark_with_cfg(pe, EEH_PE_ISOLATED); eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); eeh_pe_dev_traverse(pe, eeh_disable_and_save_dev_state, dev); eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); eeh_ops->reset(pe, EEH_RESET_HOT); break; case pcie_warm_reset: - eeh_pe_state_mark(pe, EEH_PE_ISOLATED); + eeh_pe_state_mark_with_cfg(pe, EEH_PE_ISOLATED); eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); eeh_pe_dev_traverse(pe, eeh_disable_and_save_dev_state, dev); eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 35f0b62259bb..8654cb166c19 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -657,6 +657,28 @@ void eeh_pe_state_clear(struct eeh_pe *pe, int state) eeh_pe_traverse(pe, __eeh_pe_state_clear, &state); } +/** + * eeh_pe_state_mark_with_cfg - Mark PE state with unblocked config space + * @pe: PE + * @state: PE state to be set + * + * Set specified flag to PE and its child PEs. The PCI config space + * of some PEs is blocked automatically when EEH_PE_ISOLATED is set, + * which isn't needed in some situations. The function allows to set + * the specified flag to indicated PEs without blocking their PCI + * config space. + */ +void eeh_pe_state_mark_with_cfg(struct eeh_pe *pe, int state) +{ + eeh_pe_traverse(pe, __eeh_pe_state_mark, &state); + if (!(state & EEH_PE_ISOLATED)) + return; + + /* Clear EEH_PE_CFG_BLOCKED, which might be set just now */ + state = EEH_PE_CFG_BLOCKED; + eeh_pe_traverse(pe, __eeh_pe_state_clear, &state); +} + /* * Some PCI bridges (e.g. PLX bridges) have primary/secondary * buses assigned explicitly by firmware, and we probably have |
