1*4882a593Smuzhiyun/* 2*4882a593Smuzhiyun * arch/arm/mach-ebsa110/include/mach/entry-macro.S 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Low-level IRQ helper macros for ebsa110 platform. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * This file is licensed under the terms of the GNU General Public 7*4882a593Smuzhiyun * License version 2. This program is licensed "as is" without any 8*4882a593Smuzhiyun * warranty of any kind, whether express or implied. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun#define IRQ_STAT 0xff000000 /* read */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun .macro get_irqnr_preamble, base, tmp 16*4882a593Smuzhiyun mov \base, #IRQ_STAT 17*4882a593Smuzhiyun .endm 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun .macro get_irqnr_and_base, irqnr, stat, base, tmp 20*4882a593Smuzhiyun ldrb \stat, [\base] @ get interrupts 21*4882a593Smuzhiyun mov \irqnr, #0 22*4882a593Smuzhiyun tst \stat, #15 23*4882a593Smuzhiyun addeq \irqnr, \irqnr, #4 24*4882a593Smuzhiyun moveq \stat, \stat, lsr #4 25*4882a593Smuzhiyun tst \stat, #3 26*4882a593Smuzhiyun addeq \irqnr, \irqnr, #2 27*4882a593Smuzhiyun moveq \stat, \stat, lsr #2 28*4882a593Smuzhiyun tst \stat, #1 29*4882a593Smuzhiyun addeq \irqnr, \irqnr, #1 30*4882a593Smuzhiyun moveq \stat, \stat, lsr #1 31*4882a593Smuzhiyun tst \stat, #1 @ bit 0 should be set 32*4882a593Smuzhiyun .endm 33*4882a593Smuzhiyun 34