powerpc/powernv: Create opal sysfs directory

Create /sys/firmware/opal directory. We wil use this interface to fetch opal error logs, firmware update, etc. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

powerpc/powernv: Create opal sysfs directory
Create /sys/firmware/opal directory. We wil use this interface to fetch opal error logs, firmware update, etc. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Vasant Hegde · Benjamin Herrenschmidt
1 parent ef1313deaf
Showing 2 changed files with 22 additions and 0 deletions Side-by-side Diff
arch/powerpc/include/asm/opal.h
arch/powerpc/platforms/powernv/opal.c
@@ -601,6 +601,9 @@
 	uint64_t 	line_len;
 } oppanel_line_t;
  
+/* /sys/firmware/opal */
+extern struct kobject *opal_kobj;
+
 /* API functions */
 int64_t opal_console_write(int64_t term_number, __be64 *length,
 			   const uint8_t *buffer);
@@ -17,11 +17,15 @@
 #include <linux/interrupt.h>
 #include <linux/notifier.h>
 #include <linux/slab.h>
+#include <linux/kobject.h>
 #include <asm/opal.h>
 #include <asm/firmware.h>
  
 #include "powernv.h"
  
+/* /sys/firmware/opal */
+struct kobject *opal_kobj;
+
 struct opal {
 	u64 base;
 	u64 entry;
@@ -375,6 +379,17 @@
 	return IRQ_HANDLED;
 }
  
+static int opal_sysfs_init(void)
+{
+	opal_kobj = kobject_create_and_add("opal", firmware_kobj);
+	if (!opal_kobj) {
+		pr_warn("kobject_create_and_add opal failed\n");
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
 static int __init opal_init(void)
 {
 	struct device_node *np, *consoles;
@@ -420,6 +435,10 @@
 				   " (0x%x)\n", rc, irq, hwirq);
 		opal_irqs[i] = irq;
 	}
+
+	/* Create "opal" kobject under /sys/firmware */
+	rc = opal_sysfs_init();
+
 	return 0;
 }
 subsys_initcall(opal_init);
...	...	@@ -601,6 +601,9 @@
601	601	uint64_t line_len;
602	602	} oppanel_line_t;
603	603
	604	+/* /sys/firmware/opal */
	605	+extern struct kobject *opal_kobj;
	606	+
604	607	/* API functions */
605	608	int64_t opal_console_write(int64_t term_number, __be64 *length,
606	609	const uint8_t *buffer);
...	...	@@ -17,11 +17,15 @@
17	17	#include <linux/interrupt.h>
18	18	#include <linux/notifier.h>
19	19	#include <linux/slab.h>
	20	+#include <linux/kobject.h>
20	21	#include <asm/opal.h>
21	22	#include <asm/firmware.h>
22	23
23	24	#include "powernv.h"
24	25
	26	+/* /sys/firmware/opal */
	27	+struct kobject *opal_kobj;
	28	+
25	29	struct opal {
26	30	u64 base;
27	31	u64 entry;
...	...	@@ -375,6 +379,17 @@
375	379	return IRQ_HANDLED;
376	380	}
377	381
	382	+static int opal_sysfs_init(void)
	383	+{
	384	+ opal_kobj = kobject_create_and_add("opal", firmware_kobj);
	385	+ if (!opal_kobj) {
	386	+ pr_warn("kobject_create_and_add opal failed\n");
	387	+ return -ENOMEM;
	388	+ }
	389	+
	390	+ return 0;
	391	+}
	392	+
378	393	static int __init opal_init(void)
379	394	{
380	395	struct device_node np, consoles;
...	...	@@ -420,6 +435,10 @@
420	435	" (0x%x)\n", rc, irq, hwirq);
421	436	opal_irqs[i] = irq;
422	437	}
	438	+
	439	+ /* Create "opal" kobject under /sys/firmware */
	440	+ rc = opal_sysfs_init();
	441	+
423	442	return 0;
424	443	}
425	444	subsys_initcall(opal_init);