From: Gavin Shan <shangw@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Gavin Shan <shangw@linux.vnet.ibm.com>
Subject: [PATCH 27/27] powerpc/eeh: Debugfs for error injection
Date: Sat, 15 Jun 2013 17:03:18 +0800 [thread overview]
Message-ID: <1371286998-2842-28-git-send-email-shangw@linux.vnet.ibm.com> (raw)
In-Reply-To: <1371286998-2842-1-git-send-email-shangw@linux.vnet.ibm.com>
The patch creates debugfs entries (powerpc/PCIxxxx/err_injct) for
injecting EEH errors for testing purpose.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/eeh-ioda.c | 33 ++++++++++++++++++++++++++++-
1 files changed, 32 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 95f7d96..ff7a504 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -12,6 +12,7 @@
*/
#include <linux/bootmem.h>
+#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/io.h>
@@ -34,6 +35,29 @@
#include "powernv.h"
#include "pci.h"
+#ifdef CONFIG_DEBUG_FS
+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");
+#endif /* CONFIG_DEBUG_FS */
+
/**
* ioda_eeh_post_init - Chip dependent post initialization
* @hose: PCI controller
@@ -47,8 +71,15 @@ static int ioda_eeh_post_init(struct pci_controller *hose)
struct pnv_phb *phb = hose->private_data;
/* FIXME: Enable it for PHB3 later */
- if (phb->type == PNV_PHB_IODA1)
+ if (phb->type == PNV_PHB_IODA1) {
+#ifdef CONFIG_DEBUG_FS
+ if (phb->dbgfs)
+ debugfs_create_file("err_injct", 0600,
+ phb->dbgfs, hose, &ioda_eeh_dbgfs_ops);
+#endif
+
phb->eeh_enabled = 1;
+ }
return 0;
}
--
1.7.5.4
next prev parent reply other threads:[~2013-06-15 9:03 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-15 9:02 [PATCH v4 00/27] EEH Support for PowerNV platform Gavin Shan
2013-06-15 9:02 ` [PATCH 01/27] powerpc/eeh: Move common part to kernel directory Gavin Shan
2013-06-17 3:03 ` Mike Qiu
2013-06-18 0:55 ` Gavin Shan
2013-06-15 9:02 ` [PATCH 02/27] powerpc/eeh: Cleanup for EEH core Gavin Shan
2013-06-15 9:02 ` [PATCH 03/27] powerpc/eeh: Make eeh_phb_pe_get() public Gavin Shan
2013-06-15 9:02 ` [PATCH 04/27] powerpc/eeh: Make eeh_pe_get() public Gavin Shan
2013-06-15 9:02 ` [PATCH 05/27] powerpc/eeh: Trace PCI bus from PE Gavin Shan
2013-06-15 9:02 ` [PATCH 06/27] powerpc/eeh: Make eeh_init() public Gavin Shan
2013-06-15 9:02 ` [PATCH 07/27] powerpc/eeh: EEH post initialization operation Gavin Shan
2013-06-15 9:02 ` [PATCH 08/27] powerpc/eeh: Refactor eeh_reset_pe_once() Gavin Shan
2013-06-15 9:03 ` [PATCH 09/27] powerpc/eeh: Delay EEH probe during hotplug Gavin Shan
2013-06-15 9:03 ` [PATCH 10/27] powerpc/eeh: Export confirm_error_lock Gavin Shan
2013-06-15 9:03 ` [PATCH 11/27] powerpc/eeh: Sync OPAL API with firmware Gavin Shan
2013-06-15 9:03 ` [PATCH 12/27] powerpc/eeh: EEH backend for P7IOC Gavin Shan
2013-06-15 9:03 ` [PATCH 13/27] powerpc/eeh: I/O chip post initialization Gavin Shan
2013-06-15 9:03 ` [PATCH 14/27] powerpc/eeh: I/O chip EEH enable option Gavin Shan
2013-06-15 9:03 ` [PATCH 15/27] powerpc/eeh: I/O chip EEH state retrieval Gavin Shan
2013-06-15 9:03 ` [PATCH 16/27] powerpc/eeh: I/O chip PE reset Gavin Shan
2013-06-15 9:03 ` [PATCH 17/27] powerpc/eeh: I/O chip PE log and bridge setup Gavin Shan
2013-06-15 9:03 ` [PATCH 18/27] powerpc/eeh: PowerNV EEH backends Gavin Shan
2013-06-15 9:03 ` [PATCH 19/27] powerpc/eeh: Initialization for PowerNV Gavin Shan
2013-06-15 9:03 ` [PATCH 20/27] powerpc/eeh: Enable EEH check for config access Gavin Shan
2013-06-15 9:03 ` [PATCH 21/27] powerpc/eeh: Process interrupts caused by EEH Gavin Shan
2013-06-16 5:12 ` Benjamin Herrenschmidt
2013-06-16 7:27 ` Gavin Shan
2013-06-16 8:37 ` Benjamin Herrenschmidt
2013-06-15 9:03 ` [PATCH 22/27] powerpc/eeh: Allow to check fenced PHB proactively Gavin Shan
2013-06-15 9:03 ` [PATCH 23/27] powernv/opal: Notifier for OPAL events Gavin Shan
2013-06-15 9:03 ` [PATCH 24/27] powernv/opal: Disable OPAL notifier upon poweroff Gavin Shan
2013-06-15 9:03 ` [PATCH 25/27] powerpc/eeh: Register OPAL notifier for PCI error Gavin Shan
2013-06-15 9:03 ` [PATCH 26/27] powerpc/powernv: Debugfs directory for PHB Gavin Shan
2013-06-15 9:03 ` Gavin Shan [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-06-05 7:34 [PATCH v3 00/27] EEH Support for PowerNV platform Gavin Shan
2013-06-05 7:34 ` [PATCH 27/27] powerpc/eeh: Debugfs for error injection Gavin Shan
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