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powerpc/powernv: Debugfs directory for PHB

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The patch creates one debugfs directory ("powerpc/PCIxxxx") for
each PHB so that we can hook EEH error injection debugfs entry
there in proceeding patch.

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 2013-06-20 18:13:25 +08:00 committed by Benjamin Herrenschmidt
parent 7cb9d93dc6
commit 37c367f279
2 changed files with 27 additions and 0 deletions
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23
arch/powerpc/platforms/powernv/pci-ioda.c
View file

@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/init.h>
@ -32,6 +33,7 @@
#include <asm/iommu.h>
#include <asm/tce.h>
#include <asm/xics.h>
#include <asm/debug.h>
#include "powernv.h"
#include "pci.h"
@ -969,12 +971,33 @@ static void pnv_pci_ioda_setup_DMA(void)
}
}
static void pnv_pci_ioda_create_dbgfs(void)
{
#ifdef CONFIG_DEBUG_FS
struct pci_controller *hose, *tmp;
struct pnv_phb *phb;
char name[16];
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
phb = hose->private_data;
sprintf(name, "PCI%04x", hose->global_number);
phb->dbgfs = debugfs_create_dir(name, powerpc_debugfs_root);
if (!phb->dbgfs)
pr_warning("%s: Error on creating debugfs on PHB#%x\n",
__func__, hose->global_number);
}
#endif /* CONFIG_DEBUG_FS */
}
static void pnv_pci_ioda_fixup(void)
{
pnv_pci_ioda_setup_PEs();
pnv_pci_ioda_setup_seg();
pnv_pci_ioda_setup_DMA();
pnv_pci_ioda_create_dbgfs();
#ifdef CONFIG_EEH
eeh_addr_cache_build();
eeh_init();

4
arch/powerpc/platforms/powernv/pci.h
View file

@ -96,6 +96,10 @@ struct pnv_phb {
int removed;
#endif
#ifdef CONFIG_DEBUG_FS
struct dentry *dbgfs;
#endif
#ifdef CONFIG_PCI_MSI
unsigned int msi_base;
unsigned int msi32_support;