From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/mach-at91/include/mach/entry-macro.S | 32 +++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 arch/arm/mach-at91/include/mach/entry-macro.S (limited to 'arch/arm/mach-at91/include/mach/entry-macro.S') diff --git a/arch/arm/mach-at91/include/mach/entry-macro.S b/arch/arm/mach-at91/include/mach/entry-macro.S new file mode 100644 index 00000000..7ab68f97 --- /dev/null +++ b/arch/arm/mach-at91/include/mach/entry-macro.S @@ -0,0 +1,32 @@ +/* + * arch/arm/mach-at91/include/mach/entry-macro.S + * + * Copyright (C) 2003-2005 SAN People + * + * Low-level IRQ helper macros for AT91RM9200 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 +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =(AT91_VA_BASE_SYS + AT91_AIC) @ base virtual address of AIC peripheral + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqnr, [\base, #(AT91_AIC_IVR - AT91_AIC)] @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt) + ldr \irqstat, [\base, #(AT91_AIC_ISR - AT91_AIC)] @ read interrupt source number + teq \irqstat, #0 @ ISR is 0 when no current interrupt, or spurious interrupt + streq \tmp, [\base, #(AT91_AIC_EOICR - AT91_AIC)] @ not going to be handled further, then ACK it now. + .endm + -- cgit v1.2.3