linux-vybrid_public/arch/arm/plat-omap/include/mach/entry-macro.S

/*
 * arch/arm/plat-omap/include/mach/entry-macro.S
 *
 * Low-level IRQ helper macros for OMAP-based platforms
 *
 * 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>

#if defined(CONFIG_ARCH_OMAP1)

#if defined(CONFIG_ARCH_OMAP730) && \
	(defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX))
#error "FIXME: OMAP730 doesn't support multiple-OMAP"
#elif defined(CONFIG_ARCH_OMAP730)
#define INT_IH2_IRQ		INT_730_IH2_IRQ
#elif defined(CONFIG_ARCH_OMAP15XX)
#define INT_IH2_IRQ		INT_1510_IH2_IRQ
#elif defined(CONFIG_ARCH_OMAP16XX)
#define INT_IH2_IRQ		INT_1610_IH2_IRQ
#else
#warning "IH2 IRQ defaulted"
#define INT_IH2_IRQ		INT_1510_IH2_IRQ
#endif

 		.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, =IO_ADDRESS(OMAP_IH1_BASE)
		ldr	\irqnr, [\base, #IRQ_ITR_REG_OFFSET]
		ldr	\tmp, [\base, #IRQ_MIR_REG_OFFSET]
		mov	\irqstat, #0xffffffff
		bic	\tmp, \irqstat, \tmp
		tst	\irqnr, \tmp
		beq	1510f

		ldr	\irqnr, [\base, #IRQ_SIR_FIQ_REG_OFFSET]
		cmp	\irqnr, #0
		ldreq	\irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
		cmpeq	\irqnr, #INT_IH2_IRQ
		ldreq	\base, =IO_ADDRESS(OMAP_IH2_BASE)
		ldreq	\irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
		addeqs	\irqnr, \irqnr, #32
1510:
		.endm

#endif
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)

#if defined(CONFIG_ARCH_OMAP24XX)
#include <mach/omap24xx.h>
#endif
#if defined(CONFIG_ARCH_OMAP34XX)
#include <mach/omap34xx.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

		.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

		.macro	irq_prio_table
		.endm

#endif