| /* |
| * arch/arm/mach-shark/include/mach/entry-macro.S |
| * |
| * Low-level IRQ helper macros for Shark platform |
| * |
| * 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. |
| */ |
| .macro get_irqnr_preamble, base, tmp |
| mov \base, #0xe0000000 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| |
| mov \irqstat, #0x0C |
| strb \irqstat, [\base, #0x20] @outb(0x0C, 0x20) /* Poll command */ |
| ldrb \irqnr, [\base, #0x20] @irq = inb(0x20) & 7 |
| and \irqstat, \irqnr, #0x80 |
| teq \irqstat, #0 |
| beq 43f |
| and \irqnr, \irqnr, #7 |
| teq \irqnr, #2 |
| bne 44f |
| 43: mov \irqstat, #0x0C |
| strb \irqstat, [\base, #0xa0] @outb(0x0C, 0xA0) /* Poll command */ |
| ldrb \irqnr, [\base, #0xa0] @irq = (inb(0xA0) & 7) + 8 |
| and \irqstat, \irqnr, #0x80 |
| teq \irqstat, #0 |
| beq 44f |
| and \irqnr, \irqnr, #7 |
| add \irqnr, \irqnr, #8 |
| 44: teq \irqstat, #0 |
| .endm |
| |
