projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| f80dff9d DW |
13 | .macro get_irqnr_preamble, base, tmp |
| 14 | .endm | |
| 15 | ||
| 16 | .macro arch_ret_to_user, tmp1, tmp2 | |
| 17 | .endm | |
| 18 | ||
| 1da177e4 LT |
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 | |
| 31 | 43: 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 | |
| 39 | 44: teq \irqstat, #0 | |
| 40 | .endm | |
| 41 |