mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 13:41:51 +00:00
c1fe8d054c
This is one of the last platforms using the old entry path. While this code path is spread over a few files, it is fairly straightforward to convert it into an equivalent C version, leaving the existing algorithm and all the priority handling the same. Unlike most irqchip drivers, this means reading the status register(s) in a loop and always handling the highest-priority irq first. The IOMD_IRQREQC and IOMD_IRQREQD registers are not actaully used here, but I left the code in place for the time being, to keep the conversion as direct as possible. It could be removed in a cleanup on top. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [ardb: drop obsolete IOMD_IRQREQC/IOMD_IRQREQD handling] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Marc Zyngier <maz@kernel.org> Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
19 lines
437 B
ArmAsm
19 lines
437 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
#include <mach/hardware.h>
|
|
|
|
.equ ioc_base_high, IOC_BASE & 0xff000000
|
|
.equ ioc_base_low, IOC_BASE & 0x00ff0000
|
|
|
|
.text
|
|
.global rpc_default_fiq_end
|
|
ENTRY(rpc_default_fiq_start)
|
|
mov r12, #ioc_base_high
|
|
.if ioc_base_low
|
|
orr r12, r12, #ioc_base_low
|
|
.endif
|
|
strb r12, [r12, #0x38] @ Disable FIQ register
|
|
subs pc, lr, #4
|
|
rpc_default_fiq_end:
|