From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/arm/mach-shark/include/mach/entry-macro.S | 36 ++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 arch/arm/mach-shark/include/mach/entry-macro.S

(limited to 'arch/arm/mach-shark/include/mach/entry-macro.S')

diff --git a/arch/arm/mach-shark/include/mach/entry-macro.S b/arch/arm/mach-shark/include/mach/entry-macro.S
new file mode 100644
index 00000000..c9e49f04
--- /dev/null
+++ b/arch/arm/mach-shark/include/mach/entry-macro.S
@@ -0,0 +1,36 @@
+/*
+ * arch/arm/mach-shark/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Shark platform
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+		.macro  get_irqnr_preamble, base, tmp
+		mov	\base, #0xfe000000
+		orr	\base, \base, #0x00e00000
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+		mov	\irqstat, #0x0C
+		strb	\irqstat, [\base, #0x20]	@outb(0x0C, 0x20) /* Poll command */
+		ldrb	\irqnr, [\base, #0x20]		@irq = inb(0x20) & 7
+		and	\irqstat, \irqnr, #0x80
+		teq	\irqstat, #0
+		beq	43f
+		and	\irqnr, \irqnr, #7
+		teq	\irqnr, #2
+		bne	44f
+43:		mov	\irqstat, #0x0C
+		strb	\irqstat, [\base, #0xa0]	@outb(0x0C, 0xA0) /* Poll command */
+		ldrb	\irqnr, [\base, #0xa0]		@irq = (inb(0xA0) & 7) + 8
+		and	\irqstat, \irqnr, #0x80
+		teq	\irqstat, #0
+		beq	44f
+		and	\irqnr, \irqnr, #7
+		add	\irqnr, \irqnr, #8
+44:		teq	\irqstat, #0
+		.endm
+
-- 
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