1/***************************************************************************** 2* Copyright 2006 - 2008 Broadcom Corporation. All rights reserved. 3* 4* Unless you and Broadcom execute a separate written software license 5* agreement governing use of this software, this software is licensed to you 6* under the terms of the GNU General Public License version 2, available at 7* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). 8* 9* Notwithstanding the above, under no circumstances may you combine this 10* software in any way with any other Broadcom software provided under a 11* license other than the GPL, without Broadcom's express prior written 12* consent. 13*****************************************************************************/ 14 15/* 16 * 17 * Low-level IRQ helper macros for BCMRing-based platforms 18 * 19 */ 20#include <mach/irqs.h> 21#include <mach/hardware.h> 22#include <mach/csp/mm_io.h> 23 24 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 25 ldr \base, =(MM_IO_BASE_INTC0) 26 ldr \irqstat, [\base, #0] @ get status 27 ldr \irqnr, [\base, #0x10] @ mask with enable register 28 ands \irqstat, \irqstat, \irqnr 29 mov \irqnr, #IRQ_INTC0_START 30 cmp \irqstat, #0 31 bne 1001f 32 33 ldr \base, =(MM_IO_BASE_INTC1) 34 ldr \irqstat, [\base, #0] @ get status 35 ldr \irqnr, [\base, #0x10] @ mask with enable register 36 ands \irqstat, \irqstat, \irqnr 37 mov \irqnr, #IRQ_INTC1_START 38 cmp \irqstat, #0 39 bne 1001f 40 41 ldr \base, =(MM_IO_BASE_SINTC) 42 ldr \irqstat, [\base, #0] @ get status 43 ldr \irqnr, [\base, #0x10] @ mask with enable register 44 ands \irqstat, \irqstat, \irqnr 45 mov \irqnr, #0xffffffff @ code meaning no interrupt bits set 46 cmp \irqstat, #0 47 beq 1002f 48 49 mov \irqnr, #IRQ_SINTC_START @ something is set, so fixup return value 50 511001: 52 movs \tmp, \irqstat, lsl #16 53 movne \irqstat, \tmp 54 addeq \irqnr, \irqnr, #16 55 56 movs \tmp, \irqstat, lsl #8 57 movne \irqstat, \tmp 58 addeq \irqnr, \irqnr, #8 59 60 movs \tmp, \irqstat, lsl #4 61 movne \irqstat, \tmp 62 addeq \irqnr, \irqnr, #4 63 64 movs \tmp, \irqstat, lsl #2 65 movne \irqstat, \tmp 66 addeq \irqnr, \irqnr, #2 67 68 movs \tmp, \irqstat, lsl #1 69 addeq \irqnr, \irqnr, #1 70 orrs \base, \base, #1 71 721002: @ irqnr will be set to 0xffffffff if no irq bits are set 73 .endm 74 75 .macro get_irqnr_preamble, base, tmp 76 .endm 77