powerpc/eeh: I/O chip PE log and bridge setup
The patch adds backends to retrieve error log and configure p2p bridges for the indicated PE. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -445,12 +445,65 @@ static int ioda_eeh_reset(struct eeh_pe *pe, int option)
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return ret;
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}
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/**
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* ioda_eeh_get_log - Retrieve error log
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* @pe: EEH PE
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* @severity: Severity level of the log
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* @drv_log: buffer to store the log
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* @len: space of the log buffer
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*
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* The function is used to retrieve error log from P7IOC.
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*/
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static int ioda_eeh_get_log(struct eeh_pe *pe, int severity,
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char *drv_log, unsigned long len)
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{
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s64 ret;
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unsigned long flags;
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struct pci_controller *hose = pe->phb;
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struct pnv_phb *phb = hose->private_data;
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spin_lock_irqsave(&phb->lock, flags);
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ret = opal_pci_get_phb_diag_data2(phb->opal_id,
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phb->diag.blob, PNV_PCI_DIAG_BUF_SIZE);
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if (ret) {
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spin_unlock_irqrestore(&phb->lock, flags);
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pr_warning("%s: Failed to get log for PHB#%x-PE#%x\n",
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__func__, hose->global_number, pe->addr);
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return -EIO;
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}
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/*
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* FIXME: We probably need log the error in somewhere.
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* Lets make it up in future.
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*/
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/* pr_info("%s", phb->diag.blob); */
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spin_unlock_irqrestore(&phb->lock, flags);
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return 0;
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}
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/**
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* ioda_eeh_configure_bridge - Configure the PCI bridges for the indicated PE
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* @pe: EEH PE
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*
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* For particular PE, it might have included PCI bridges. In order
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* to make the PE work properly, those PCI bridges should be configured
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* correctly. However, we need do nothing on P7IOC since the reset
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* function will do everything that should be covered by the function.
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*/
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static int ioda_eeh_configure_bridge(struct eeh_pe *pe)
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{
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return 0;
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}
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struct pnv_eeh_ops ioda_eeh_ops = {
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.post_init = ioda_eeh_post_init,
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.set_option = ioda_eeh_set_option,
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.get_state = ioda_eeh_get_state,
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.reset = ioda_eeh_reset,
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.get_log = NULL,
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.configure_bridge = NULL,
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.get_log = ioda_eeh_get_log,
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.configure_bridge = ioda_eeh_configure_bridge,
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.next_error = NULL
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};
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