mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 15:16:41 +07:00
5b39be4637
Add a common entry-macro-vic2.S for systems where there are two VICs so that the machine or platform directories just need to setup the correct information before including <asm/entry-macro-vic2.S> into their own entry-macro.S file. Since this code is from the S3C64XX project, we update the S3C64XX machine entry code to use this new header. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
58 lines
1.5 KiB
ArmAsm
58 lines
1.5 KiB
ArmAsm
/* arch/arm/include/asm/entry-macro-vic2.S
|
|
*
|
|
* Originally arch/arm/mach-s3c6400/include/mach/entry-macro.S
|
|
*
|
|
* Copyright 2008 Openmoko, Inc.
|
|
* Copyright 2008 Simtec Electronics
|
|
* http://armlinux.simtec.co.uk/
|
|
* Ben Dooks <ben@simtec.co.uk>
|
|
*
|
|
* Low-level IRQ helper macros for a device with two VICs
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/* This should be included from <mach/entry-macro.S> with the necessary
|
|
* defines for virtual addresses and IRQ bases for the two vics.
|
|
*
|
|
* The code needs the following defined:
|
|
* IRQ_VIC0_BASE IRQ number of VIC0's first IRQ
|
|
* IRQ_VIC1_BASE IRQ number of VIC1's first IRQ
|
|
* VA_VIC0 Virtual address of VIC0
|
|
* VA_VIC1 Virtual address of VIC1
|
|
*
|
|
* Note, code assumes VIC0's virtual address is an ARM immediate constant
|
|
* away from VIC1.
|
|
*/
|
|
|
|
#include <asm/hardware/vic.h>
|
|
|
|
.macro disable_fiq
|
|
.endm
|
|
|
|
.macro get_irqnr_preamble, base, tmp
|
|
ldr \base, =VA_VIC0
|
|
.endm
|
|
|
|
.macro arch_ret_to_user, tmp1, tmp2
|
|
.endm
|
|
|
|
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
|
|
|
|
@ check the vic0
|
|
mov \irqnr, #IRQ_VIC0_BASE + 31
|
|
ldr \irqstat, [ \base, # VIC_IRQ_STATUS ]
|
|
teq \irqstat, #0
|
|
|
|
@ otherwise try vic1
|
|
addeq \tmp, \base, #(VA_VIC1 - VA_VIC0)
|
|
addeq \irqnr, \irqnr, #(IRQ_VIC1_BASE - IRQ_VIC0_BASE)
|
|
ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
|
|
teqeq \irqstat, #0
|
|
|
|
clzne \irqstat, \irqstat
|
|
subne \irqnr, \irqnr, \irqstat
|
|
.endm
|