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| author | Gavin Shan <shangw@linux.vnet.ibm.com> | 2014-01-03 17:47:13 +0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-01-15 13:57:43 +1100 |
| commit | 9be3becc2f99f4f2b1b697a616b1aa9e7889d68f (patch) | |
| tree | 13222481d41eedb178b440b9293ec63575c2d075 /arch/powerpc/platforms | |
| parent | 1d350544d5bf17d835d2850004c64ca51235c771 (diff) | |
| download | op-kernel-dev-9be3becc2f99f4f2b1b697a616b1aa9e7889d68f.zip op-kernel-dev-9be3becc2f99f4f2b1b697a616b1aa9e7889d68f.tar.gz | |
powerpc/eeh: Call opal_pci_reinit() on powernv for restoring config space
The patch implements the EEH operation backend restore_config()
for PowerNV platform. That relies on OPAL API opal_pci_reinit()
where we reinitialize the error reporting properly after PE or
PHB reset.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/powernv/eeh-powernv.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index ab91e6a..a79fddc 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -344,6 +344,27 @@ static int powernv_eeh_next_error(struct eeh_pe **pe) return -EEXIST; } +static int powernv_eeh_restore_config(struct device_node *dn) +{ + struct eeh_dev *edev = of_node_to_eeh_dev(dn); + struct pnv_phb *phb; + s64 ret; + + if (!edev) + return -EEXIST; + + phb = edev->phb->private_data; + ret = opal_pci_reinit(phb->opal_id, + OPAL_REINIT_PCI_DEV, edev->config_addr); + if (ret) { + pr_warn("%s: Can't reinit PCI dev 0x%x (%lld)\n", + __func__, edev->config_addr, ret); + return -EIO; + } + + return 0; +} + static struct eeh_ops powernv_eeh_ops = { .name = "powernv", .init = powernv_eeh_init, @@ -360,7 +381,7 @@ static struct eeh_ops powernv_eeh_ops = { .read_config = pnv_pci_cfg_read, .write_config = pnv_pci_cfg_write, .next_error = powernv_eeh_next_error, - .restore_config = NULL + .restore_config = powernv_eeh_restore_config }; /** |
