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powerpc/eeh: Add restore_config operation

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After reset on the specific PE or PHB, we never configure AER
correctly on PowerNV platform. We needn't care it on pSeries
platform. The patch introduces additional EEH operation eeh_ops::
restore_config() so that we have chance to configure AER correctly
for PowerNV platform.

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 2014-01-03 17:47:12 +08:00 committed by Benjamin Herrenschmidt
parent 8184616f6f
commit 1d350544d5
4 changed files with 9 additions and 2 deletions
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1
arch/powerpc/include/asm/eeh.h
View File

@ -157,6 +157,7 @@ struct eeh_ops {
int (*read_config)(struct device_node *dn, int where, int size, u32 *val);
int (*write_config)(struct device_node *dn, int where, int size, u32 val);
int (*next_error)(struct eeh_pe **pe);
int (*restore_config)(struct device_node *dn);
};
extern struct eeh_ops *eeh_ops;

3
arch/powerpc/kernel/eeh_pe.c
View File

@ -736,6 +736,9 @@ static void *eeh_restore_one_device_bars(void *data, void *flag)
else
eeh_restore_device_bars(edev, dn);
if (eeh_ops->restore_config)
eeh_ops->restore_config(dn);
return NULL;
}

3
arch/powerpc/platforms/powernv/eeh-powernv.c
View File

@ -359,7 +359,8 @@ static struct eeh_ops powernv_eeh_ops = {
.configure_bridge = powernv_eeh_configure_bridge,
.read_config = pnv_pci_cfg_read,
.write_config = pnv_pci_cfg_write,
.next_error = powernv_eeh_next_error
.next_error = powernv_eeh_next_error,
.restore_config = NULL
};
/**

4
arch/powerpc/platforms/pseries/eeh_pseries.c
View File

@ -689,7 +689,9 @@ static struct eeh_ops pseries_eeh_ops = {
.get_log = pseries_eeh_get_log,
.configure_bridge = pseries_eeh_configure_bridge,
.read_config = pseries_eeh_read_config,
.write_config = pseries_eeh_write_config
.write_config = pseries_eeh_write_config,
.next_error = NULL,
.restore_config = NULL
};
/**