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Commit 37c367f2 authored by Gavin Shan's avatar Gavin Shan Committed by Benjamin Herrenschmidt
Browse files

powerpc/powernv: Debugfs directory for PHB 



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: default avatarGavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 7cb9d93d

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

+23 −0
Original line number Diff line number Diff line
@@ -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();

arch/powerpc/platforms/powernv/pci.h

+4 −0
Original line number Diff line number Diff line
@@ -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;