mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-04 20:57:45 -04:00
b15dfdacd9
Adjust misc routines for both 32BIT and 64BIT, including: bitops, bswap, checksum, string, jump label, unaligned access emulator, suspend/wakeup routines, etc. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
91 lines
1.9 KiB
ArmAsm
91 lines
1.9 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Sleep helper for Loongson-3 sleep mode.
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*
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* Author: Huacai Chen <chenhuacai@loongson.cn>
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#include <asm/asm.h>
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#include <asm/asmmacro.h>
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#include <asm/addrspace.h>
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#include <asm/loongarch.h>
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#include <asm/stackframe.h>
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/* preparatory stuff */
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.macro SETUP_SLEEP
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PTR_ADDI sp, sp, -PT_SIZE
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REG_S $r1, sp, PT_R1
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REG_S $r2, sp, PT_R2
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REG_S $r3, sp, PT_R3
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REG_S $r4, sp, PT_R4
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REG_S $r21, sp, PT_R21
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REG_S $r22, sp, PT_R22
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REG_S $r23, sp, PT_R23
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REG_S $r24, sp, PT_R24
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REG_S $r25, sp, PT_R25
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REG_S $r26, sp, PT_R26
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REG_S $r27, sp, PT_R27
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REG_S $r28, sp, PT_R28
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REG_S $r29, sp, PT_R29
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REG_S $r30, sp, PT_R30
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REG_S $r31, sp, PT_R31
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.endm
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.macro SETUP_WAKEUP
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REG_L $r1, sp, PT_R1
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REG_L $r2, sp, PT_R2
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REG_L $r3, sp, PT_R3
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REG_L $r4, sp, PT_R4
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REG_L $r21, sp, PT_R21
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REG_L $r22, sp, PT_R22
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REG_L $r23, sp, PT_R23
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REG_L $r24, sp, PT_R24
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REG_L $r25, sp, PT_R25
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REG_L $r26, sp, PT_R26
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REG_L $r27, sp, PT_R27
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REG_L $r28, sp, PT_R28
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REG_L $r29, sp, PT_R29
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REG_L $r30, sp, PT_R30
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REG_L $r31, sp, PT_R31
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PTR_ADDI sp, sp, PT_SIZE
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.endm
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.text
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.align 12
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/* Sleep/wakeup code for Loongson-3 */
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SYM_FUNC_START(loongarch_suspend_enter)
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SETUP_SLEEP
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la.pcrel t0, acpi_saved_sp
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REG_S sp, t0, 0
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bl __flush_cache_all
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/* Pass RA and SP to BIOS */
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PTR_ADDI a1, sp, 0
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la.pcrel a0, loongarch_wakeup_start
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la.pcrel t0, loongarch_suspend_addr
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REG_L t0, t0, 0
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jirl ra, t0, 0 /* Call BIOS's STR sleep routine */
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/*
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* This is where we return upon wakeup.
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* Reload all of the registers and return.
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*/
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SYM_INNER_LABEL(loongarch_wakeup_start, SYM_L_GLOBAL)
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SETUP_DMWINS t0
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JUMP_VIRT_ADDR t0, t1
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/* Enable PG */
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li.w t0, 0xb0 # PLV=0, IE=0, PG=1
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csrwr t0, LOONGARCH_CSR_CRMD
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la.pcrel t0, acpi_saved_sp
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REG_L sp, t0, 0
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SETUP_WAKEUP
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jr ra
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SYM_FUNC_END(loongarch_suspend_enter)
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