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Commit ff6bdcd9 authored by Gavin Shan's avatar Gavin Shan Committed by Benjamin Herrenschmidt
Browse files

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: default avatarGavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 20bb842b

arch/powerpc/platforms/powernv/eeh-ioda.c

+50 −9
Original line number Original line Diff line number Diff line
@@ -59,26 +59,60 @@ static struct notifier_block ioda_eeh_nb = { 
};

};





#ifdef CONFIG_DEBUG_FS

#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 pci_controller *hose = data;

	struct pnv_phb *phb = hose->private_data;

	struct pnv_phb *phb = hose->private_data;





	out_be64(phb->regs + 0xD10, val);

	out_be64(phb->regs + offset, val);

	return 0;

	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 pci_controller *hose = data;

	struct pnv_phb *phb = hose->private_data;

	struct pnv_phb *phb = hose->private_data;





	*val = in_be64(phb->regs + 0xD10);

	*val = in_be64(phb->regs + offset);

	return 0;

	return 0;

}

}





DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_dbgfs_ops, ioda_eeh_dbgfs_get,

static int ioda_eeh_outb_dbgfs_set(void *data, u64 val)

			ioda_eeh_dbgfs_set, "0x%llx\n");

{

	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 */

#endif /* CONFIG_DEBUG_FS */





/**

/**
@@ -116,10 +150,17 @@ static int ioda_eeh_post_init(struct pci_controller *hose) 
	}

	}





#ifdef CONFIG_DEBUG_FS

#ifdef CONFIG_DEBUG_FS

	if (phb->dbgfs)

	if (phb->dbgfs) {

		debugfs_create_file("err_injct", 0600,

		debugfs_create_file("err_injct_outbound", 0600,

				    phb->dbgfs, hose,

				    &ioda_eeh_outb_dbgfs_ops);

		debugfs_create_file("err_injct_inboundA", 0600,

				    phb->dbgfs, hose,

				    phb->dbgfs, hose,

				    &ioda_eeh_dbgfs_ops);

				    &ioda_eeh_inbA_dbgfs_ops);

		debugfs_create_file("err_injct_inboundB", 0600,

				    phb->dbgfs, hose,

				    &ioda_eeh_inbB_dbgfs_ops);

	}

#endif

#endif





	phb->eeh_state |= PNV_EEH_STATE_ENABLED;

	phb->eeh_state |= PNV_EEH_STATE_ENABLED;