[POWERPC] Add EEH sysfs blinkenlights

Add sysfs blinkenlights for EEH statistics.  Shuffle the
eeh_add_device_tree() call so that it appears in the correct
sequence.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
 arch/powerpc/platforms/pseries/Makefile    |    2
 arch/powerpc/platforms/pseries/eeh.c       |    4 +
 arch/powerpc/platforms/pseries/eeh_cache.c |    2
 arch/powerpc/platforms/pseries/eeh_sysfs.c |   84 +++++++++++++++++++++++++++++
 arch/powerpc/platforms/pseries/pci_dlpar.c |    7 +-
 include/asm-powerpc/ppc-pci.h              |    3 +
 6 files changed, 98 insertions(+), 4 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 84 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/pseries/eeh_sysfs.c b/arch/powerpc/platforms/pseries/eeh_sysfs.c
new file mode 100644
index 000000000000..0543cafec56b
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/eeh_sysfs.c
@@ -0,0 +1,84 @@
+/*
+ * Sysfs entries for PCI Error Recovery for PAPR-compliant platform.
+ * Copyright IBM Corporation 2007
+ * Copyright Linas Vepstas <linas@austin.ibm.com> 2007
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send comments and feedback to Linas Vepstas <linas@austin.ibm.com>
+ */
+#include <linux/pci.h>
+#include <asm/ppc-pci.h>
+#include <asm/pci-bridge.h>
+#include <linux/kobject.h>
+
+/**
+ * EEH_SHOW_ATTR -- create sysfs entry for eeh statistic
+ * @_name: name of file in sysfs directory
+ * @_memb: name of member in struct pci_dn to access
+ * @_format: printf format for display
+ *
+ * All of the attributes look very similar, so just
+ * auto-gen a cut-n-paste routine to display them.
+ */
+#define EEH_SHOW_ATTR(_name,_memb,_format)               \
+static ssize_t eeh_show_##_name(struct device *dev,      \
+                struct device_attribute *attr, char *buf)          \
+{                                                        \
+        struct pci_dev *pdev = to_pci_dev(dev);               \
+        struct device_node *dn = pci_device_to_OF_node(pdev); \
+        struct pci_dn *pdn;                                   \
+                                                              \
+        if (!dn || PCI_DN(dn) == NULL)                        \
+                return 0;                                          \
+                                                              \
+        pdn = PCI_DN(dn);                                     \
+        return sprintf(buf, _format "\n", pdn->_memb);        \
+}                                                        \
+static DEVICE_ATTR(_name, S_IRUGO, eeh_show_##_name, NULL);
+
+
+EEH_SHOW_ATTR(eeh_mode, eeh_mode, "0x%x");
+EEH_SHOW_ATTR(eeh_config_addr, eeh_config_addr, "0x%x");
+EEH_SHOW_ATTR(eeh_pe_config_addr, eeh_pe_config_addr, "0x%x");
+EEH_SHOW_ATTR(eeh_check_count, eeh_check_count, "%d");
+EEH_SHOW_ATTR(eeh_freeze_count, eeh_freeze_count, "%d");
+
+void eeh_sysfs_add_device(struct pci_dev *pdev)
+{
+        int rc=0;
+
+        rc += device_create_file(&pdev->dev, &dev_attr_eeh_mode);
+        rc += device_create_file(&pdev->dev, &dev_attr_eeh_config_addr);
+        rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
+        rc += device_create_file(&pdev->dev, &dev_attr_eeh_check_count);
+        rc += device_create_file(&pdev->dev, &dev_attr_eeh_freeze_count);
+
+        if (rc)
+                printk(KERN_WARNING "EEH: Unable to create sysfs entries\n");
+}
+
+void eeh_sysfs_remove_device(struct pci_dev *pdev)
+{
+        device_remove_file(&pdev->dev, &dev_attr_eeh_mode);
+        device_remove_file(&pdev->dev, &dev_attr_eeh_config_addr);
+        device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
+        device_remove_file(&pdev->dev, &dev_attr_eeh_check_count);
+        device_remove_file(&pdev->dev, &dev_attr_eeh_freeze_count);
+}
+