From: Helge Deller <deller@gmx.de>
Date: Sun, 17 Sep 2017 19:15:09 +0000 (+0200)
Subject: parisc: Add wrapper for pdc_instr() firmware function
X-Git-Tag: MMI-PSA29.97-13-9~4653^2~6
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=77089c5274fe2f72db5a2cd956d0d308aed08e68;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

parisc: Add wrapper for pdc_instr() firmware function

Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h
index 26b4455baa83..510341f62d97 100644
--- a/arch/parisc/include/asm/pdc.h
+++ b/arch/parisc/include/asm/pdc.h
@@ -280,6 +280,7 @@ void setup_pdc(void);		/* in inventory.c */
 /* wrapper-functions from pdc.c */
 
 int pdc_add_valid(unsigned long address);
+int pdc_instr(unsigned int *instr);
 int pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len);
 int pdc_chassis_disp(unsigned long disp);
 int pdc_chassis_warn(unsigned long *warn);
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index ab80e5c6f651..6d471c00c71a 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -232,6 +232,26 @@ int pdc_add_valid(unsigned long address)
 }
 EXPORT_SYMBOL(pdc_add_valid);
 
+/**
+ * pdc_instr - Get instruction that invokes PDCE_CHECK in HPMC handler.
+ * @instr: Pointer to variable which will get instruction opcode.
+ *
+ * The return value is PDC_OK (0) in case call succeeded.
+ */
+int __init pdc_instr(unsigned int *instr)
+{
+	int retval;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
+	retval = mem_pdc_call(PDC_INSTR, 0UL, __pa(pdc_result));
+	convert_to_wide(pdc_result);
+	*instr = pdc_result[0];
+	spin_unlock_irqrestore(&pdc_lock, flags);
+
+	return retval;
+}
+
 /**
  * pdc_chassis_info - Return chassis information.
  * @result: The return buffer.