initial_commit

1 files changed, 51 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/include/mach/entry-macro.S b/arch/arm/mach-davinci/include/mach/entry-macro.S
new file mode 100644
index 00000000..fbdebc7c
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/entry-macro.S
@@ -0,0 +1,51 @@
+/*
+ * Low-level IRQ helper macros for TI DaVinci-based platforms
+ *
+ * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. 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/io.h>
+#include <mach/irqs.h>
+
+		.macro	disable_fiq
+		.endm
+
+		.macro  get_irqnr_preamble, base, tmp
+		ldr \base, =davinci_intc_base
+		ldr \base, [\base]
+		.endm
+
+		.macro  arch_ret_to_user, tmp1, tmp2
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+#if defined(CONFIG_AINTC) && defined(CONFIG_CP_INTC)
+		ldr \tmp, =davinci_intc_type
+		ldr \tmp, [\tmp]
+		cmp \tmp, #DAVINCI_INTC_TYPE_CP_INTC
+		beq 1001f
+#endif
+#if defined(CONFIG_AINTC)
+		ldr \tmp, [\base, #0x14]
+		movs \tmp, \tmp, lsr #2
+		sub \irqnr, \tmp, #1
+		b 1002f
+#endif
+#if defined(CONFIG_CP_INTC)
+1001:		ldr \irqnr, [\base, #0x80] /* get irq number */
+		and \irqnr, \irqnr, #0xff  /* irq is in bits 0-9 */
+		mov \tmp, \irqnr, lsr #3
+		and \tmp, \tmp, #0xfc
+		add \tmp, \tmp, #0x280 /* get the register offset */
+		ldr \irqstat, [\base, \tmp] /* get the intc status */
+		cmp \irqstat, #0x0
+#endif
+1002:
+		.endm
+
+		.macro	irq_prio_table
+		.endm