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powerpc/powernv: Support inbound error injection

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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>
This commit is contained in:
Gavin Shan 2013-09-06 09:00:01 +08:00 committed by Benjamin Herrenschmidt
parent 20bb842b9b
commit ff6bdcd967
1 changed files with 50 additions and 9 deletions
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59
arch/powerpc/platforms/powernv/eeh-ioda.c
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@ -59,26 +59,60 @@ static struct notifier_block ioda_eeh_nb = {
};
#ifdef CONFIG_DEBUG_FS
static int ioda_eeh_dbgfs_set(void *data, u64 val)
static int ioda_eeh_dbgfs_set(void *data, int offset, u64 val)
{
struct pci_controller *hose = data;
struct pnv_phb *phb = hose->private_data;
out_be64(phb->regs + 0xD10, val);
out_be64(phb->regs + offset, val);
return 0;
}
static int ioda_eeh_dbgfs_get(void *data, u64 *val)
static int ioda_eeh_dbgfs_get(void *data, int offset, u64 *val)
{
struct pci_controller *hose = data;
struct pnv_phb *phb = hose->private_data;
*val = in_be64(phb->regs + 0xD10);
*val = in_be64(phb->regs + offset);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_dbgfs_ops, ioda_eeh_dbgfs_get,
ioda_eeh_dbgfs_set, "0x%llx\n");
static int ioda_eeh_outb_dbgfs_set(void *data, u64 val)
{
return ioda_eeh_dbgfs_set(data, 0xD10, val);
}
static int ioda_eeh_outb_dbgfs_get(void *data, u64 *val)
{
return ioda_eeh_dbgfs_get(data, 0xD10, val);
}
static int ioda_eeh_inbA_dbgfs_set(void *data, u64 val)
{
return ioda_eeh_dbgfs_set(data, 0xD90, val);
}
static int ioda_eeh_inbA_dbgfs_get(void *data, u64 *val)
{
return ioda_eeh_dbgfs_get(data, 0xD90, val);
}
static int ioda_eeh_inbB_dbgfs_set(void *data, u64 val)
{
return ioda_eeh_dbgfs_set(data, 0xE10, val);
}
static int ioda_eeh_inbB_dbgfs_get(void *data, u64 *val)
{
return ioda_eeh_dbgfs_get(data, 0xE10, val);
}
DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_outb_dbgfs_ops, ioda_eeh_outb_dbgfs_get,
ioda_eeh_outb_dbgfs_set, "0x%llx\n");
DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_inbA_dbgfs_ops, ioda_eeh_inbA_dbgfs_get,
ioda_eeh_inbA_dbgfs_set, "0x%llx\n");
DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_inbB_dbgfs_ops, ioda_eeh_inbB_dbgfs_get,
ioda_eeh_inbB_dbgfs_set, "0x%llx\n");
#endif /* CONFIG_DEBUG_FS */
/**
@ -116,10 +150,17 @@ static int ioda_eeh_post_init(struct pci_controller *hose)
}
#ifdef CONFIG_DEBUG_FS
if (phb->dbgfs)
debugfs_create_file("err_injct", 0600,
if (phb->dbgfs) {
debugfs_create_file("err_injct_outbound", 0600,
phb->dbgfs, hose,
&ioda_eeh_dbgfs_ops);
&ioda_eeh_outb_dbgfs_ops);
debugfs_create_file("err_injct_inboundA", 0600,
phb->dbgfs, hose,
&ioda_eeh_inbA_dbgfs_ops);
debugfs_create_file("err_injct_inboundB", 0600,
phb->dbgfs, hose,
&ioda_eeh_inbB_dbgfs_ops);
}
#endif
phb->eeh_state |= PNV_EEH_STATE_ENABLED;