From: Gavin Shan <shangw@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Gavin Shan <shangw@linux.vnet.ibm.com>
Subject: [PATCH 23/23] powerpc/eeh: Add debugfs entry to inject errors
Date: Thu, 30 May 2013 16:24:05 +0800 [thread overview]
Message-ID: <1369902245-5886-24-git-send-email-shangw@linux.vnet.ibm.com> (raw)
In-Reply-To: <1369902245-5886-1-git-send-email-shangw@linux.vnet.ibm.com>
The patch intends to add debugfs entry powerpc/EEH/PHBx so that
the administrator can inject EEH errors to specified PCI host
bridge for testing purpose.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/eeh-ioda.c | 36 ++++++++++++++++++++++++++++-
1 files changed, 35 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index ec5c524..4cc9db7 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -22,6 +22,7 @@
#include <linux/bootmem.h>
#include <linux/delay.h>
+#include <linux/debugfs.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
@@ -43,6 +44,29 @@
#include "powernv.h"
#include "pci.h"
+static struct dentry *ioda_eeh_dbgfs = NULL;
+
+static int ioda_eeh_dbgfs_set(void *data, u64 val)
+{
+ struct pci_controller *hose = data;
+ struct pnv_phb *phb = hose->private_data;
+
+ out_be64(phb->regs + 0xD10, val);
+ return 0;
+}
+
+static int ioda_eeh_dbgfs_get(void *data, u64 *val)
+{
+ struct pci_controller *hose = data;
+ struct pnv_phb *phb = hose->private_data;
+
+ *val = in_be64(phb->regs + 0xD10);
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(ioda_eeh_dbgfs_ops, ioda_eeh_dbgfs_get,
+ ioda_eeh_dbgfs_set, "0x%llx\n");
+
/**
* ioda_eeh_post_init - Chip dependent post initialization
* @hose: PCI controller
@@ -54,10 +78,20 @@
static int ioda_eeh_post_init(struct pci_controller *hose)
{
struct pnv_phb *phb = hose->private_data;
+ char name[16];
+
+ /* Create EEH debugfs root if possible */
+ if (!ioda_eeh_dbgfs)
+ ioda_eeh_dbgfs = debugfs_create_dir("EEH", powerpc_debugfs_root);
/* FIXME: Enable it for PHB3 later */
- if (phb->type == PNV_PHB_IODA1)
+ if (phb->type == PNV_PHB_IODA1) {
+ sprintf(name, "PHB%d", hose->global_number);
+ debugfs_create_file(name, 0600, ioda_eeh_dbgfs,
+ hose, &ioda_eeh_dbgfs_ops);
+
phb->eeh_enabled = 1;
+ }
return 0;
}
--
1.7.5.4
next prev parent reply other threads:[~2013-05-30 8:24 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-30 8:23 [PATCH v2 00/23] powerpc/eeh: Enhance converting EEH dev Gavin Shan
2013-05-30 8:23 ` [PATCH 01/23] " Gavin Shan
2013-05-30 8:23 ` [PATCH 02/23] powerpc/eeh: Function to tranverse PCI devices Gavin Shan
2013-06-01 4:13 ` Benjamin Herrenschmidt
2013-06-03 1:00 ` Gavin Shan
2013-05-30 8:23 ` [PATCH 03/23] powerpc/eeh: Make eeh_phb_pe_get() public Gavin Shan
2013-06-01 4:14 ` Benjamin Herrenschmidt
2013-06-03 1:02 ` Gavin Shan
2013-05-30 8:23 ` [PATCH 04/23] powerpc/eeh: Make eeh_pe_get() public Gavin Shan
2013-05-30 8:23 ` [PATCH 05/23] powerpc/eeh: Trace PCI bus from PE Gavin Shan
2013-05-30 8:23 ` [PATCH 06/23] powerpc/eeh: Make eeh_init() public Gavin Shan
2013-05-30 8:23 ` [PATCH 07/23] powerpc/eeh: EEH post initialization operation Gavin Shan
2013-05-30 8:23 ` [PATCH 08/23] powerpc/eeh: Refactor eeh_reset_pe_once() Gavin Shan
2013-06-01 4:18 ` Benjamin Herrenschmidt
2013-06-03 1:03 ` Gavin Shan
2013-05-30 8:23 ` [PATCH 09/23] powerpc/eeh: Delay EEH probe during hotplug Gavin Shan
2013-05-30 8:23 ` [PATCH 10/23] powerpc/eeh: Differentiate EEH events Gavin Shan
2013-05-30 8:23 ` [PATCH 11/23] powerpc/eeh: Sync OPAL API with firmware Gavin Shan
2013-05-30 8:23 ` [PATCH 12/23] powerpc/eeh: EEH backend for P7IOC Gavin Shan
2013-05-30 8:23 ` [PATCH 13/23] powerpc/eeh: I/O chip post initialization Gavin Shan
2013-05-30 8:23 ` [PATCH 14/23] powerpc/eeh: I/O chip EEH enable option Gavin Shan
2013-05-30 8:23 ` [PATCH 15/23] powerpc/eeh: I/O chip EEH state retrieval Gavin Shan
2013-05-30 8:23 ` [PATCH 16/23] powerpc/eeh: I/O chip PE reset Gavin Shan
2013-06-01 4:24 ` Benjamin Herrenschmidt
2013-06-03 1:09 ` Gavin Shan
2013-05-30 8:23 ` [PATCH 17/23] powerpc/eeh: I/O chip PE log and bridge setup Gavin Shan
2013-05-30 8:24 ` [PATCH 18/23] powerpc/eeh: PowerNV EEH backends Gavin Shan
2013-06-01 4:29 ` Benjamin Herrenschmidt
2013-06-03 1:10 ` Gavin Shan
2013-05-30 8:24 ` [PATCH 19/23] powerpc/eeh: Initialization for PowerNV Gavin Shan
2013-05-30 8:24 ` [PATCH 20/23] powerpc/eeh: Enable EEH check for config access Gavin Shan
2013-05-30 8:24 ` [PATCH 21/23] powerpc/eeh: Process interrupts caused by EEH Gavin Shan
2013-05-30 8:24 ` [PATCH 22/23] powerpc/eeh: Connect EEH error interrupt handle Gavin Shan
2013-06-01 4:32 ` Benjamin Herrenschmidt
2013-05-30 8:24 ` Gavin Shan [this message]
2013-06-01 4:34 ` [PATCH 23/23] powerpc/eeh: Add debugfs entry to inject errors Benjamin Herrenschmidt
2013-06-03 1:23 ` Gavin Shan
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