From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001
From: root <root@artemis.panaceas.org>
Date: Fri, 25 Dec 2015 04:40:36 +0000
Subject: initial_commit

---
 arch/arm/plat-tcc/include/mach/entry-macro.S | 68 ++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 arch/arm/plat-tcc/include/mach/entry-macro.S

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

diff --git a/arch/arm/plat-tcc/include/mach/entry-macro.S b/arch/arm/plat-tcc/include/mach/entry-macro.S
new file mode 100644
index 00000000..748f401e
--- /dev/null
+++ b/arch/arm/plat-tcc/include/mach/entry-macro.S
@@ -0,0 +1,68 @@
+/*
+ * include/asm-arm/arch-tcc83x/entry-macro.S
+ *
+ * Author : <linux@telechips.com>
+ * Created: June 10, 2008
+ * Description: Low-level IRQ helper macros for Telechips-based platforms
+ *
+ * Copyright (C) 2008-2009 Telechips
+ *
+ * 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.
+ */
+
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+
+	.macro	disable_fiq
+	.endm
+
+	.macro  get_irqnr_preamble, base, tmp
+	.endm
+
+	.macro  arch_ret_to_user, tmp1, tmp2
+	.endm
+
+	.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+		ldr	\base, =0xF2003000 @ base address of PIC registers
+
+		@@ read MREQ register of PIC0
+
+		mov	\irqnr, #0
+		ldr	\irqstat, [\base, #0x00000014 ]	@ lower 32 interrupts
+		cmp	\irqstat, #0
+		bne	1001f
+
+		@@ read MREQ register of PIC1
+
+		ldr	\irqstat, [\base, #0x00000094]	@ upper 32 interrupts
+		cmp	\irqstat, #0
+		beq	1002f
+		mov	\irqnr, #0x20
+
+1001:
+		movs	\tmp, \irqstat, lsl #16
+		movne	\irqstat, \tmp
+		addeq	\irqnr, \irqnr, #16
+
+		movs	\tmp, \irqstat, lsl #8
+		movne	\irqstat, \tmp
+		addeq	\irqnr, \irqnr, #8
+
+		movs	\tmp, \irqstat, lsl #4
+		movne	\irqstat, \tmp
+		addeq	\irqnr, \irqnr, #4
+
+		movs	\tmp, \irqstat, lsl #2
+		movne	\irqstat, \tmp
+		addeq	\irqnr, \irqnr, #2
+
+		movs	\tmp, \irqstat, lsl #1
+		addeq	\irqnr, \irqnr, #1
+		orrs	\base, \base, #1
+1002:
+		@@ exit here, Z flag unset if IRQ
+
+	.endm
-- 
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