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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2014-07-21 14:35:27 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-07-21 14:48:45 +1000 |
| commit | a4202bc19821a024e460592159507a059f993d3b (patch) | |
| tree | 9385e51a6fe4e3ef4b5bf905e2a0188b91935aa6 /core/pci-opal.c | |
| parent | 1b5220b4b7a337463cfe77e36d8988039f6facca (diff) | |
| download | skiboot-a4202bc19821a024e460592159507a059f993d3b.zip skiboot-a4202bc19821a024e460592159507a059f993d3b.tar.gz skiboot-a4202bc19821a024e460592159507a059f993d3b.tar.bz2 | |
PCI: Allow to set frozen state
The patch introduces a new OPAL API opal_pci_eeh_freeze_set(),
which allows to set frozen state for the specified PE, so that
we can support "compound" PE in kernel.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'core/pci-opal.c')
| -rw-r--r-- | core/pci-opal.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/core/pci-opal.c b/core/pci-opal.c index 59f4d5c..2048d7f 100644 --- a/core/pci-opal.c +++ b/core/pci-opal.c @@ -93,6 +93,25 @@ static int64_t opal_pci_eeh_freeze_clear(uint64_t phb_id, uint64_t pe_number, } opal_call(OPAL_PCI_EEH_FREEZE_CLEAR, opal_pci_eeh_freeze_clear, 3); +static int64_t opal_pci_eeh_freeze_set(uint64_t phb_id, uint64_t pe_number, + uint64_t eeh_action_token) +{ + struct phb *phb = pci_get_phb(phb_id); + int64_t rc; + + if (!phb) + return OPAL_PARAMETER; + if (!phb->ops->eeh_freeze_set) + return OPAL_UNSUPPORTED; + phb->ops->lock(phb); + rc = phb->ops->eeh_freeze_set(phb, pe_number, eeh_action_token); + phb->ops->unlock(phb); + pci_put_phb(phb); + + return rc; +} +opal_call(OPAL_PCI_EEH_FREEZE_SET, opal_pci_eeh_freeze_set, 3); + static int64_t opal_pci_err_injct(uint64_t phb_id, uint32_t pe_no, uint32_t type, uint32_t function, uint64_t addr, uint64_t mask) |