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[PATCH] powerpc: Save device BARs much earlier in the boot sequence

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241-eeh-save-bars-earlier.patch

Save the PCI device bars *before* any PCI probing is done.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
(cherry picked from 76c902b919098860f3d4e125f847abcc4cb1782a commit)
This commit is contained in:
Linas Vepstas
2005-11-03 18:55:19 -06:00
committed by Paul Mackerras
parent d177c207ba
commit 7684b40cb5
5 changed files with 14 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/powerpc/platforms/pseries/eeh.c
+8 -8
View File
@@ -106,6 +106,8 @@ static DEFINE_PER_CPU(unsigned long, false_positives);
static DEFINE_PER_CPU(unsigned long, ignored_failures);
static DEFINE_PER_CPU(unsigned long, slot_resets);
#define IS_BRIDGE(class_code) (((class_code)<<16) == PCI_BASE_CLASS_BRIDGE)
/* --------------------------------------------------------------- */
/* Below lies the EEH event infrastructure */
@@ -620,7 +622,7 @@ void eeh_restore_bars(struct pci_dn *pdn)
if (!pdn)
return;
if ((pdn->eeh_mode & EEH_MODE_SUPPORTED) && (!pdn->eeh_is_bridge))
if ((pdn->eeh_mode & EEH_MODE_SUPPORTED) && !IS_BRIDGE(pdn->class_code))
__restore_bars (pdn);
dn = pdn->node->child;
@@ -638,18 +640,15 @@ void eeh_restore_bars(struct pci_dn *pdn)
* PCI devices are added individuallly; but, for the restore,
* an entire slot is reset at a time.
*/
void eeh_save_bars(struct pci_dev * pdev, struct pci_dn *pdn)
static void eeh_save_bars(struct pci_dn *pdn)
{
int i;
if (!pdev || !pdn )
if (!pdn )
return;
for (i = 0; i < 16; i++)
pci_read_config_dword(pdev, i * 4, &pdn->config_space[i]);
if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
pdn->eeh_is_bridge = 1;
rtas_read_config(pdn, i * 4, 4, &pdn->config_space[i]);
}
void
@@ -699,6 +698,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
int enable;
struct pci_dn *pdn = PCI_DN(dn);
pdn->class_code = *class_code;
pdn->eeh_mode = 0;
pdn->eeh_check_count = 0;
pdn->eeh_freeze_count = 0;
@@ -781,6 +781,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
dn->full_name);
}
eeh_save_bars(pdn);
return NULL;
}
@@ -915,7 +916,6 @@ void eeh_add_device_late(struct pci_dev *dev)
pdn->pcidev = dev;
pci_addr_cache_insert_device (dev);
eeh_save_bars(dev, pdn);
}
EXPORT_SYMBOL_GPL(eeh_add_device_late);