1/* 2 * include/asm-arm/arch-shark/entry-macro.S 3 * 4 * Low-level IRQ helper macros for Shark platform 5 * 6 * This file is licensed under the terms of the GNU General Public 7 * License version 2. This program is licensed "as is" without any 8 * warranty of any kind, whether express or implied. 9 */ 10 .macro disable_fiq 11 .endm 12 13 .macro get_irqnr_preamble, base, tmp 14 .endm 15 16 .macro arch_ret_to_user, tmp1, tmp2 17 .endm 18 19 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 20 mov r4, #0xe0000000 21 22 mov \irqstat, #0x0C 23 strb \irqstat, [r4, #0x20] @outb(0x0C, 0x20) /* Poll command */ 24 ldrb \irqnr, [r4, #0x20] @irq = inb(0x20) & 7 25 and \irqstat, \irqnr, #0x80 26 teq \irqstat, #0 27 beq 43f 28 and \irqnr, \irqnr, #7 29 teq \irqnr, #2 30 bne 44f 3143: mov \irqstat, #0x0C 32 strb \irqstat, [r4, #0xa0] @outb(0x0C, 0xA0) /* Poll command */ 33 ldrb \irqnr, [r4, #0xa0] @irq = (inb(0xA0) & 7) + 8 34 and \irqstat, \irqnr, #0x80 35 teq \irqstat, #0 36 beq 44f 37 and \irqnr, \irqnr, #7 38 add \irqnr, \irqnr, #8 3944: teq \irqstat, #0 40 .endm 41