diff options
Diffstat (limited to 'include/asm-arm/arch-ixp2000/entry-macro.S')
| -rw-r--r-- | include/asm-arm/arch-ixp2000/entry-macro.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/asm-arm/arch-ixp2000/entry-macro.S b/include/asm-arm/arch-ixp2000/entry-macro.S new file mode 100644 index 000000000000..e3a4e4121298 --- /dev/null +++ b/include/asm-arm/arch-ixp2000/entry-macro.S @@ -0,0 +1,53 @@ +/* + * include/asm-arm/arch-ixp2000/entry-macro.S + * + * Low-level IRQ helper macros for IXP2000-based 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. + */ + + .macro disable_fiq + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + mov \irqnr, #0x0 @clear out irqnr as default + mov \base, #0xfe000000 + orr \base, \base, #0x00e00000 + orr \base, \base, #0x08 + ldr \irqstat, [\base] @ get interrupts + + cmp \irqstat, #0 + beq 1001f + + clz \irqnr, \irqstat + mov \base, #31 + subs \irqnr, \base, \irqnr + + /* + * We handle PCIA and PCIB here so we don't have an + * extra layer of code just to check these two bits. + */ + cmp \irqnr, #IRQ_IXP2000_PCI + bne 1001f + + mov \base, #0xfe000000 + orr \base, \base, #0x00c00000 + orr \base, \base, #0x00000100 + orr \base, \base, #0x00000058 + ldr \irqstat, [\base] + + mov \tmp, #(1<<26) + tst \irqstat, \tmp + movne \irqnr, #IRQ_IXP2000_PCIA + bne 1001f + + mov \tmp, #(1<<27) + tst \irqstat, \tmp + movne \irqnr, #IRQ_IXP2000_PCIB + +1001: + .endm + |