powerpc/powernv: Support inbound error injection
For now, we only support outbound error injection. Actually, the hardware supports injecting inbound errors as well. The patch enables to inject inbound errors. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -59,26 +59,60 @@ static struct notifier_block ioda_eeh_nb = {
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};
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#ifdef CONFIG_DEBUG_FS
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static int ioda_eeh_dbgfs_set(void *data, u64 val)
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static int ioda_eeh_dbgfs_set(void *data, int offset, u64 val)
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{
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struct pci_controller *hose = data;
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struct pnv_phb *phb = hose->private_data;
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out_be64(phb->regs + 0xD10, val);
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out_be64(phb->regs + offset, val);
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return 0;
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}
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static int ioda_eeh_dbgfs_get(void *data, u64 *val)
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static int ioda_eeh_dbgfs_get(void *data, int offset, u64 *val)
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{
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struct pci_controller *hose = data;
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struct pnv_phb *phb = hose->private_data;
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*val = in_be64(phb->regs + 0xD10);
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*val = in_be64(phb->regs + offset);
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_dbgfs_ops, ioda_eeh_dbgfs_get,
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ioda_eeh_dbgfs_set, "0x%llx\n");
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static int ioda_eeh_outb_dbgfs_set(void *data, u64 val)
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{
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return ioda_eeh_dbgfs_set(data, 0xD10, val);
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}
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static int ioda_eeh_outb_dbgfs_get(void *data, u64 *val)
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{
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return ioda_eeh_dbgfs_get(data, 0xD10, val);
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}
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static int ioda_eeh_inbA_dbgfs_set(void *data, u64 val)
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{
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return ioda_eeh_dbgfs_set(data, 0xD90, val);
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}
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static int ioda_eeh_inbA_dbgfs_get(void *data, u64 *val)
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{
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return ioda_eeh_dbgfs_get(data, 0xD90, val);
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}
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static int ioda_eeh_inbB_dbgfs_set(void *data, u64 val)
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{
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return ioda_eeh_dbgfs_set(data, 0xE10, val);
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}
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static int ioda_eeh_inbB_dbgfs_get(void *data, u64 *val)
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{
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return ioda_eeh_dbgfs_get(data, 0xE10, val);
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}
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DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_outb_dbgfs_ops, ioda_eeh_outb_dbgfs_get,
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ioda_eeh_outb_dbgfs_set, "0x%llx\n");
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DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_inbA_dbgfs_ops, ioda_eeh_inbA_dbgfs_get,
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ioda_eeh_inbA_dbgfs_set, "0x%llx\n");
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DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_inbB_dbgfs_ops, ioda_eeh_inbB_dbgfs_get,
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ioda_eeh_inbB_dbgfs_set, "0x%llx\n");
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#endif /* CONFIG_DEBUG_FS */
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/**
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@ -116,10 +150,17 @@ static int ioda_eeh_post_init(struct pci_controller *hose)
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}
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#ifdef CONFIG_DEBUG_FS
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if (phb->dbgfs)
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debugfs_create_file("err_injct", 0600,
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if (phb->dbgfs) {
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debugfs_create_file("err_injct_outbound", 0600,
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phb->dbgfs, hose,
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&ioda_eeh_dbgfs_ops);
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&ioda_eeh_outb_dbgfs_ops);
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debugfs_create_file("err_injct_inboundA", 0600,
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phb->dbgfs, hose,
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&ioda_eeh_inbA_dbgfs_ops);
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debugfs_create_file("err_injct_inboundB", 0600,
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phb->dbgfs, hose,
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&ioda_eeh_inbB_dbgfs_ops);
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}
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#endif
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phb->eeh_state |= PNV_EEH_STATE_ENABLED;
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