diff options
Diffstat (limited to 'arch/arm/mach-pxa/include/mach/entry-macro.S')
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/entry-macro.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/include/mach/entry-macro.S b/arch/arm/mach-pxa/include/mach/entry-macro.S new file mode 100644 index 00000000..a73bc86a --- /dev/null +++ b/arch/arm/mach-pxa/include/mach/entry-macro.S @@ -0,0 +1,51 @@ +/* + * arch/arm/mach-pxa/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for PXA-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. + */ +#include <mach/hardware.h> +#include <mach/irqs.h> + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mrc p15, 0, \tmp, c0, c0, 0 @ CPUID + mov \tmp, \tmp, lsr #13 + and \tmp, \tmp, #0x7 @ Core G + cmp \tmp, #1 + bhi 1002f + + @ Core Generation 1 (PXA25x) + mov \base, #io_p2v(0x40000000) @ IIR Ctl = 0x40d00000 + add \base, \base, #0x00d00000 + ldr \irqstat, [\base, #0] @ ICIP + ldr \irqnr, [\base, #4] @ ICMR + + ands \irqnr, \irqstat, \irqnr + beq 1001f + rsb \irqstat, \irqnr, #0 + and \irqstat, \irqstat, \irqnr + clz \irqnr, \irqstat + rsb \irqnr, \irqnr, #(31 + PXA_IRQ(0)) + b 1001f +1002: + @ Core Generation 2 (PXA27x) or Core Generation 3 (PXA3xx) + mrc p6, 0, \irqstat, c5, c0, 0 @ ICHP + tst \irqstat, #0x80000000 + beq 1001f + bic \irqstat, \irqstat, #0x80000000 + mov \irqnr, \irqstat, lsr #16 + add \irqnr, \irqnr, #(PXA_IRQ(0)) +1001: + .endm |