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powerpc/eeh: Add restore_config operation 

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
};
/**