68 lines
1.9 KiB
ArmAsm
68 lines
1.9 KiB
ArmAsm
/*
|
|
* include/asm-arm/arch-lh7a40x/entry-macro.S
|
|
*
|
|
* Low-level IRQ helper macros for LH7A40x 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.
|
|
*/
|
|
|
|
# if defined (CONFIG_ARCH_LH7A400) && defined (CONFIG_ARCH_LH7A404)
|
|
# error "LH7A400 and LH7A404 are mutually exclusive"
|
|
# endif
|
|
|
|
# if defined (CONFIG_ARCH_LH7A400)
|
|
.macro disable_fiq
|
|
.endm
|
|
|
|
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
|
|
mov \irqnr, #0
|
|
mov \base, #io_p2v(0x80000000) @ APB registers
|
|
ldr \irqstat, [\base, #0x500] @ PIC INTSR
|
|
|
|
1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry
|
|
bcs 1008f @ Bit set; irq found
|
|
add \irqnr, \irqnr, #1
|
|
bne 1001b @ Until no bits
|
|
b 1009f @ Nothing? Hmm.
|
|
1008: movs \irqstat, #1 @ Force !Z
|
|
1009:
|
|
.endm
|
|
|
|
#elif defined(CONFIG_ARCH_LH7A404)
|
|
|
|
.macro disable_fiq
|
|
.endm
|
|
|
|
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
|
|
mov \irqnr, #0 @ VIC1 irq base
|
|
mov \base, #io_p2v(0x80000000) @ APB registers
|
|
add \base, \base, #0x8000
|
|
ldr \tmp, [\base, #0x0030] @ VIC1_VECTADDR
|
|
tst \tmp, #VA_VECTORED @ Direct vectored
|
|
bne 1002f
|
|
tst \tmp, #VA_VIC1DEFAULT @ Default vectored VIC1
|
|
ldrne \irqstat, [\base, #0] @ VIC1_IRQSTATUS
|
|
bne 1001f
|
|
add \base, \base, #(0xa000 - 0x8000)
|
|
ldr \tmp, [\base, #0x0030] @ VIC2_VECTADDR
|
|
tst \tmp, #VA_VECTORED @ Direct vectored
|
|
bne 1002f
|
|
ldr \irqstat, [\base, #0] @ VIC2_IRQSTATUS
|
|
mov \irqnr, #32 @ VIC2 irq base
|
|
|
|
1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry
|
|
bcs 1008f @ Bit set; irq found
|
|
add \irqnr, \irqnr, #1
|
|
bne 1001b @ Until no bits
|
|
b 1009f @ Nothing? Hmm.
|
|
1002: and \irqnr, \tmp, #0x3f @ Mask for valid bits
|
|
1008: movs \irqstat, #1 @ Force !Z
|
|
str \tmp, [\base, #0x0030] @ Clear vector
|
|
1009:
|
|
.endm
|
|
#endif
|
|
|
|
|