omap: headers: Split entry-macro.S for mach-omap1 and mach-omap2

Split entry-macro.S for mach-omap1 and mach-omap2

Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 124 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/include/mach/entry-macro.S b/arch/arm/mach-omap2/include/mach/entry-macro.S
new file mode 100644
index 00000000000..6149d34a9cd
--- /dev/null
+++ b/arch/arm/mach-omap2/include/mach/entry-macro.S
@@ -0,0 +1,124 @@
+/*
+ * arch/arm/plat-omap/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for OMAP-based platforms
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * 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/io.h>
+#include <mach/irqs.h>
+#include <asm/hardware/gic.h>
+
+#include <mach/omap24xx.h>
+#include <mach/omap34xx.h>
+
+/* REVISIT: This should be set dynamically if CONFIG_MULTI_OMAP2 is selected */
+#if defined(CONFIG_ARCH_OMAP2420) || defined(CONFIG_ARCH_OMAP2430)
+#define OMAP2_VA_IC_BASE		OMAP2_L4_IO_ADDRESS(OMAP24XX_IC_BASE)
+#elif defined(CONFIG_ARCH_OMAP34XX)
+#define OMAP2_VA_IC_BASE		OMAP2_L4_IO_ADDRESS(OMAP34XX_IC_BASE)
+#endif
+#if defined(CONFIG_ARCH_OMAP4)
+#include <mach/omap44xx.h>
+#endif
+#define INTCPS_SIR_IRQ_OFFSET	0x0040		/* Active interrupt offset */
+#define	ACTIVEIRQ_MASK		0x7f		/* Active interrupt bits */
+
+		.macro	disable_fiq
+		.endm
+
+		.macro  get_irqnr_preamble, base, tmp
+		.endm
+
+		.macro  arch_ret_to_user, tmp1, tmp2
+		.endm
+
+#ifndef CONFIG_ARCH_OMAP4
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		ldr	\base, =OMAP2_VA_IC_BASE
+		ldr	\irqnr, [\base, #0x98] /* IRQ pending reg 1 */
+		cmp	\irqnr, #0x0
+		bne	2222f
+		ldr	\irqnr, [\base, #0xb8] /* IRQ pending reg 2 */
+		cmp	\irqnr, #0x0
+		bne	2222f
+		ldr	\irqnr, [\base, #0xd8] /* IRQ pending reg 3 */
+		cmp	\irqnr, #0x0
+2222:
+		ldrne	\irqnr, [\base, #INTCPS_SIR_IRQ_OFFSET]
+		and	\irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
+
+		.endm
+#else
+#define OMAP44XX_VA_GIC_CPU_BASE	OMAP2_L4_IO_ADDRESS(OMAP44XX_GIC_CPU_BASE)
+
+		/*
+		 * The interrupt numbering scheme is defined in the
+		 * interrupt controller spec.  To wit:
+		 *
+		 * Interrupts 0-15 are IPI
+		 * 16-28 are reserved
+		 * 29-31 are local.  We allow 30 to be used for the watchdog.
+		 * 32-1020 are global
+		 * 1021-1022 are reserved
+		 * 1023 is "spurious" (no interrupt)
+		 *
+		 * For now, we ignore all local interrupts so only return an
+		 * interrupt if it's between 30 and 1020.  The test_for_ipi
+		 * routine below will pick up on IPIs.
+		 * A simple read from the controller will tell us the number
+		 * of the highest priority enabled interrupt.
+		 * We then just need to check whether it is in the
+		 * valid range for an IRQ (30-1020 inclusive).
+		 */
+		.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+		ldr     \base, =OMAP44XX_VA_GIC_CPU_BASE
+		ldr     \irqstat, [\base, #GIC_CPU_INTACK]
+
+		ldr     \tmp, =1021
+
+		bic     \irqnr, \irqstat, #0x1c00
+
+		cmp     \irqnr, #29
+		cmpcc   \irqnr, \irqnr
+		cmpne   \irqnr, \tmp
+		cmpcs   \irqnr, \irqnr
+		.endm
+
+		/* We assume that irqstat (the raw value of the IRQ acknowledge
+		 * register) is preserved from the macro above.
+		 * If there is an IPI, we immediately signal end of interrupt
+		 * on the controller, since this requires the original irqstat
+		 * value which we won't easily be able to recreate later.
+		 */
+
+		.macro test_for_ipi, irqnr, irqstat, base, tmp
+		bic	\irqnr, \irqstat, #0x1c00
+		cmp	\irqnr, #16
+		it	cc
+		strcc	\irqstat, [\base, #GIC_CPU_EOI]
+		it	cs
+		cmpcs	\irqnr, \irqnr
+		.endm
+
+		/* As above, this assumes that irqstat and base are preserved */
+
+		.macro test_for_ltirq, irqnr, irqstat, base, tmp
+		bic	\irqnr, \irqstat, #0x1c00
+		mov 	\tmp, #0
+		cmp	\irqnr, #29
+		itt	eq
+		moveq	\tmp, #1
+		streq	\irqstat, [\base, #GIC_CPU_EOI]
+		cmp	\tmp, #0
+		.endm
+#endif
+
+		.macro	irq_prio_table
+		.endm