mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-09-04 18:49:41 +00:00
179e949719
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Cc: linux-snps-arc@lists.infradead.org Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Vineet Gupta <vgupta@kernel.org>
176 lines
3.4 KiB
C
176 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
|
|
*/
|
|
|
|
#ifndef __ASM_IRQFLAGS_ARCV2_H
|
|
#define __ASM_IRQFLAGS_ARCV2_H
|
|
|
|
#include <asm/arcregs.h>
|
|
|
|
/* status32 Bits */
|
|
#define STATUS_AD_BIT 19 /* Disable Align chk: core supports non-aligned */
|
|
#define STATUS_IE_BIT 31
|
|
|
|
#define STATUS_AD_MASK (1<<STATUS_AD_BIT)
|
|
#define STATUS_IE_MASK (1<<STATUS_IE_BIT)
|
|
|
|
/* status32 Bits as encoded/expected by CLRI/SETI */
|
|
#define CLRI_STATUS_IE_BIT 4
|
|
|
|
#define CLRI_STATUS_E_MASK 0xF
|
|
#define CLRI_STATUS_IE_MASK (1 << CLRI_STATUS_IE_BIT)
|
|
|
|
#define AUX_USER_SP 0x00D
|
|
#define AUX_IRQ_CTRL 0x00E
|
|
#define AUX_IRQ_ACT 0x043 /* Active Intr across all levels */
|
|
#define AUX_IRQ_LVL_PEND 0x200 /* Pending Intr across all levels */
|
|
#define AUX_IRQ_HINT 0x201 /* For generating Soft Interrupts */
|
|
#define AUX_IRQ_PRIORITY 0x206
|
|
#define ICAUSE 0x40a
|
|
#define AUX_IRQ_SELECT 0x40b
|
|
#define AUX_IRQ_ENABLE 0x40c
|
|
|
|
/* Was Intr taken in User Mode */
|
|
#define AUX_IRQ_ACT_BIT_U 31
|
|
|
|
/*
|
|
* Hardware supports 16 priorities (0 highest, 15 lowest)
|
|
* Linux by default runs at 1, priority 0 reserved for NMI style interrupts
|
|
*/
|
|
#define ARCV2_IRQ_DEF_PRIO 1
|
|
|
|
/* seed value for status register */
|
|
#ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS
|
|
#define __AD_ENB STATUS_AD_MASK
|
|
#else
|
|
#define __AD_ENB 0
|
|
#endif
|
|
|
|
#define ISA_INIT_STATUS_BITS (STATUS_IE_MASK | __AD_ENB | \
|
|
(ARCV2_IRQ_DEF_PRIO << 1))
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
/*
|
|
* Save IRQ state and disable IRQs
|
|
*/
|
|
static inline long arch_local_irq_save(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
__asm__ __volatile__(" clri %0 \n" : "=r" (flags) : : "memory");
|
|
|
|
return flags;
|
|
}
|
|
|
|
/*
|
|
* restore saved IRQ state
|
|
*/
|
|
static inline void arch_local_irq_restore(unsigned long flags)
|
|
{
|
|
__asm__ __volatile__(" seti %0 \n" : : "r" (flags) : "memory");
|
|
}
|
|
|
|
/*
|
|
* Unconditionally Enable IRQs
|
|
*/
|
|
static inline void arch_local_irq_enable(void)
|
|
{
|
|
unsigned int irqact = read_aux_reg(AUX_IRQ_ACT);
|
|
|
|
if (irqact & 0xffff)
|
|
write_aux_reg(AUX_IRQ_ACT, irqact & ~0xffff);
|
|
|
|
__asm__ __volatile__(" seti \n" : : : "memory");
|
|
}
|
|
|
|
/*
|
|
* Unconditionally Disable IRQs
|
|
*/
|
|
static inline void arch_local_irq_disable(void)
|
|
{
|
|
__asm__ __volatile__(" clri \n" : : : "memory");
|
|
}
|
|
|
|
/*
|
|
* save IRQ state
|
|
*/
|
|
static inline long arch_local_save_flags(void)
|
|
{
|
|
unsigned long temp;
|
|
|
|
__asm__ __volatile__(
|
|
" lr %0, [status32] \n"
|
|
: "=&r"(temp)
|
|
:
|
|
: "memory");
|
|
|
|
/* To be compatible with irq_save()/irq_restore()
|
|
* encode the irq bits as expected by CLRI/SETI
|
|
* (this was needed to make CONFIG_TRACE_IRQFLAGS work)
|
|
*/
|
|
temp = (1 << 5) |
|
|
((!!(temp & STATUS_IE_MASK)) << CLRI_STATUS_IE_BIT) |
|
|
((temp >> 1) & CLRI_STATUS_E_MASK);
|
|
return temp;
|
|
}
|
|
|
|
/*
|
|
* Query IRQ state
|
|
*/
|
|
static inline int arch_irqs_disabled_flags(unsigned long flags)
|
|
{
|
|
return !(flags & CLRI_STATUS_IE_MASK);
|
|
}
|
|
|
|
static inline int arch_irqs_disabled(void)
|
|
{
|
|
return arch_irqs_disabled_flags(arch_local_save_flags());
|
|
}
|
|
|
|
static inline void arc_softirq_trigger(int irq)
|
|
{
|
|
write_aux_reg(AUX_IRQ_HINT, irq);
|
|
}
|
|
|
|
static inline void arc_softirq_clear(int irq)
|
|
{
|
|
write_aux_reg(AUX_IRQ_HINT, 0);
|
|
}
|
|
|
|
#else
|
|
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
|
|
.macro TRACE_ASM_IRQ_DISABLE
|
|
bl trace_hardirqs_off
|
|
.endm
|
|
|
|
.macro TRACE_ASM_IRQ_ENABLE
|
|
bl trace_hardirqs_on
|
|
.endm
|
|
|
|
#else
|
|
|
|
.macro TRACE_ASM_IRQ_DISABLE
|
|
.endm
|
|
|
|
.macro TRACE_ASM_IRQ_ENABLE
|
|
.endm
|
|
|
|
#endif
|
|
.macro IRQ_DISABLE scratch
|
|
clri
|
|
TRACE_ASM_IRQ_DISABLE
|
|
.endm
|
|
|
|
.macro IRQ_ENABLE scratch
|
|
TRACE_ASM_IRQ_ENABLE
|
|
seti
|
|
.endm
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
#endif
|