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Updates for the interrupt subsystem:

Browse Source 
Core changes:
 
   - Prevent a potential deadlock when initial priority is assigned to a
     newly created interrupt thread. A recent change to plug a race between
     cpuset and __sched_setscheduler() introduced a new lock dependency
     which is now triggered. Break the lock dependency chain by moving the
     priority assignment to the thread function.
 
   - A couple of small updates to make the irq core RT safe.
 
   - Confine the irq_cpu_online/offline() API to the only left unfixable
     user Cavium Octeon so that it does not grow new usage.
 
   - A small documentation update
 
  Driver changes:
 
   - A large cross architecture rework to move irq_enter/exit() into the
     architecture code to make addressing the NOHZ_FULL/RCU issues simpler.
 
   - The obligatory new irq chip driver for Microchip EIC
 
   - Modularize a few irq chip drivers
 
   - Expand usage of devm_*() helpers throughout the driver code
 
   - The usual small fixes and improvements all over the place
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Merge tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "Updates for the interrupt subsystem:

  Core changes:

   - Prevent a potential deadlock when initial priority is assigned to a
     newly created interrupt thread. A recent change to plug a race
     between cpuset and __sched_setscheduler() introduced a new lock
     dependency which is now triggered. Break the lock dependency chain
     by moving the priority assignment to the thread function.

   - A couple of small updates to make the irq core RT safe.

   - Confine the irq_cpu_online/offline() API to the only left unfixable
     user Cavium Octeon so that it does not grow new usage.

   - A small documentation update

  Driver changes:

   - A large cross architecture rework to move irq_enter/exit() into the
     architecture code to make addressing the NOHZ_FULL/RCU issues
     simpler.

   - The obligatory new irq chip driver for Microchip EIC

   - Modularize a few irq chip drivers

   - Expand usage of devm_*() helpers throughout the driver code

   - The usual small fixes and improvements all over the place"

* tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
  h8300: Fix linux/irqchip.h include mess
  dt-bindings: irqchip: renesas-irqc: Document r8a774e1 bindings
  MIPS: irq: Avoid an unused-variable error
  genirq: Hide irq_cpu_{on,off}line() behind a deprecated option
  irqchip/mips-gic: Get rid of the reliance on irq_cpu_online()
  MIPS: loongson64: Drop call to irq_cpu_offline()
  irq: remove handle_domain_{irq,nmi}()
  irq: remove CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
  irq: riscv: perform irqentry in entry code
  irq: openrisc: perform irqentry in entry code
  irq: csky: perform irqentry in entry code
  irq: arm64: perform irqentry in entry code
  irq: arm: perform irqentry in entry code
  irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
  irq: nds32: avoid CONFIG_HANDLE_DOMAIN_IRQ
  irq: arc: avoid CONFIG_HANDLE_DOMAIN_IRQ
  irq: add generic_handle_arch_irq()
  irq: unexport handle_irq_desc()
  irq: simplify handle_domain_{irq,nmi}()
  irq: mips: simplify do_domain_IRQ()
  ...
This commit is contained in:
Linus Torvalds 2021-11-01 13:09:10 -07:00
commit 5a47ebe98e
96 changed files with 701 additions and 330 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/core-api/irq/irq-domain.rst
View File

@ -67,9 +67,6 @@ variety of methods:
deprecated
- generic_handle_domain_irq() handles an interrupt described by a
domain and a hwirq number
- handle_domain_irq() does the same thing for root interrupt
controllers and deals with the set_irq_reg()/irq_enter() sequences
that most architecture requires
Note that irq domain lookups must happen in contexts that are
compatible with a RCU read-side critical section.

73
Documentation/devicetree/bindings/interrupt-controller/microchip,eic.yaml Normal file
View File

@ -0,0 +1,73 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/microchip,eic.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Microchip External Interrupt Controller
maintainers:
- Claudiu Beznea <claudiu.beznea@microchip.com>
description:
This interrupt controller is found in Microchip SoCs (SAMA7G5) and provides
support for handling up to 2 external interrupt lines.
properties:
compatible:
enum:
- microchip,sama7g5-eic
reg:
maxItems: 1
interrupt-controller: true
'#interrupt-cells':
const: 2
description:
The first cell is the input IRQ number (between 0 and 1), the second cell
is the trigger type as defined in interrupt.txt present in this directory.
interrupts:
description: |
Contains the GIC SPI IRQs mapped to the external interrupt lines. They
should be specified sequentially from output 0 to output 1.
minItems: 2
maxItems: 2
clocks:
maxItems: 1
clock-names:
const: pclk
required:
- compatible
- reg
- interrupt-controller
- '#interrupt-cells'
- interrupts
- clocks
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/at91.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
eic: interrupt-controller@e1628000 {
compatible = "microchip,sama7g5-eic";
reg = <0xe1628000 0x100>;
interrupt-parent = <&gic>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 37>;
clock-names = "pclk";
};
...

1
Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml
View File

@ -27,6 +27,7 @@ properties:
- renesas,intc-ex-r8a774a1 # RZ/G2M
- renesas,intc-ex-r8a774b1 # RZ/G2N
- renesas,intc-ex-r8a774c0 # RZ/G2E
- renesas,intc-ex-r8a774e1 # RZ/G2H
- renesas,intc-ex-r8a7795 # R-Car H3
- renesas,intc-ex-r8a7796 # R-Car M3-W
- renesas,intc-ex-r8a77961 # R-Car M3-W+

8
MAINTAINERS
View File

@ -1552,7 +1552,7 @@ ARM PRIMECELL VIC PL190/PL192 DRIVER
M: Linus Walleij <linus.walleij@linaro.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/interrupt-controller/arm,vic.txt
F: Documentation/devicetree/bindings/interrupt-controller/arm,vic.yaml
F: drivers/irqchip/irq-vic.c
ARM SMC WATCHDOG DRIVER
@ -12270,6 +12270,12 @@ L: linux-crypto@vger.kernel.org
S: Maintained
F: drivers/crypto/atmel-ecc.*
MICROCHIP EIC DRIVER
M: Claudiu Beznea <claudiu.beznea@microchip.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Supported
F: drivers/irqchip/irq-mchp-eic.c
MICROCHIP I2C DRIVER
M: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
L: linux-i2c@vger.kernel.org

1
arch/arc/Kconfig
View File

@ -40,7 +40,6 @@ config ARC
select HAVE_KRETPROBES
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_PERF_EVENTS
select HANDLE_DOMAIN_IRQ
select IRQ_DOMAIN
select MODULES_USE_ELF_RELA
select OF

10
arch/arc/kernel/irq.c
View File

@ -6,6 +6,8 @@
#include <linux/interrupt.h>
#include <linux/irqchip.h>
#include <asm/mach_desc.h>
#include <asm/irq_regs.h>
#include <asm/smp.h>
/*
@ -39,5 +41,11 @@ void __init init_IRQ(void)
*/
void arch_do_IRQ(unsigned int hwirq, struct pt_regs *regs)
{
handle_domain_irq(NULL, hwirq, regs);
struct pt_regs *old_regs;
irq_enter();
old_regs = set_irq_regs(regs);
generic_handle_domain_irq(NULL, hwirq);
set_irq_regs(old_regs);
irq_exit();
}

1
arch/arm/Kconfig
View File

@ -64,7 +64,6 @@ config ARM
select GENERIC_PCI_IOMAP
select GENERIC_SCHED_CLOCK
select GENERIC_SMP_IDLE_THREAD
select HANDLE_DOMAIN_IRQ
select HARDIRQS_SW_RESEND
select HAVE_ARCH_AUDITSYSCALL if AEABI && !OABI_COMPAT
select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6

5
arch/arm/kernel/entry-armv.S
View File

@ -38,14 +38,11 @@
*/
.macro irq_handler
#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER
ldr r1, =handle_arch_irq
mov r0, sp
badr lr, 9997f
ldr pc, [r1]
bl generic_handle_arch_irq
#else
arch_irq_handler_default
#endif
9997:
.endm
.macro pabt_helper

14
arch/arm/kernel/irq.c
View File

@ -63,11 +63,8 @@ int arch_show_interrupts(struct seq_file *p, int prec)
*/
void handle_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
struct irq_desc *desc;
irq_enter();
/*
* Some hardware gives randomly wrong interrupts. Rather
* than crashing, do something sensible.
@ -81,9 +78,6 @@ void handle_IRQ(unsigned int irq, struct pt_regs *regs)
handle_irq_desc(desc);
else
ack_bad_irq(irq);
irq_exit();
set_irq_regs(old_regs);
}
/*
@ -92,7 +86,15 @@ void handle_IRQ(unsigned int irq, struct pt_regs *regs)
asmlinkage void __exception_irq_entry
asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs;
irq_enter();
old_regs = set_irq_regs(regs);
handle_IRQ(irq, regs);
set_irq_regs(old_regs);
irq_exit();
}
void __init init_IRQ(void)

4
arch/arm/mach-bcm/Kconfig
View File

@ -161,7 +161,6 @@ config ARCH_BCM2835
select ARM_TIMER_SP804
select HAVE_ARM_ARCH_TIMER if ARCH_MULTI_V7
select BCM2835_TIMER
select BRCMSTB_L2_IRQ
select PINCTRL
select PINCTRL_BCM2835
select MFD_CORE
@ -209,9 +208,6 @@ config ARCH_BRCMSTB
select ARM_GIC
select ARM_ERRATA_798181 if SMP
select HAVE_ARM_ARCH_TIMER
select BCM7038_L1_IRQ
select BRCMSTB_L2_IRQ
select BCM7120_L2_IRQ
select ZONE_DMA if ARM_LPAE
select SOC_BRCMSTB
select SOC_BUS

2
arch/arm/mach-imx/avic.c
View File

@ -154,7 +154,7 @@ static void __exception_irq_entry avic_handle_irq(struct pt_regs *regs)
if (nivector == 0xffff)
break;
handle_domain_irq(domain, nivector, regs);
generic_handle_domain_irq(domain, nivector);
} while (1);
}

2
arch/arm/mach-imx/tzic.c
View File

@ -134,7 +134,7 @@ static void __exception_irq_entry tzic_handle_irq(struct pt_regs *regs)
while (stat) {
handled = 1;
irqofs = fls(stat) - 1;
handle_domain_irq(domain, irqofs + i * 32, regs);
generic_handle_domain_irq(domain, irqofs + i * 32);
stat &= ~(1 << irqofs);
}
}

2
arch/arm/mach-omap1/irq.c
View File

@ -165,7 +165,7 @@ asmlinkage void __exception_irq_entry omap1_handle_irq(struct pt_regs *regs)
}
irq:
if (irqnr)
handle_domain_irq(domain, irqnr, regs);
generic_handle_domain_irq(domain, irqnr);
else
break;
} while (irqnr);

2
arch/arm/mach-s3c/irq-s3c24xx.c
View File

@ -354,7 +354,7 @@ static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
if (!(pnd & (1 << offset)))
offset = __ffs(pnd);
handle_domain_irq(intc->domain, intc_offset + offset, regs);
generic_handle_domain_irq(intc->domain, intc_offset + offset);
return true;
}

1
arch/arm64/Kconfig
View File

@ -133,7 +133,6 @@ config ARM64
select GENERIC_TIME_VSYSCALL
select GENERIC_GETTIMEOFDAY
select GENERIC_VDSO_TIME_NS
select HANDLE_DOMAIN_IRQ
select HARDIRQS_SW_RESEND
select HAVE_MOVE_PMD
select HAVE_MOVE_PUD

4
arch/arm64/Kconfig.platforms
View File

@ -44,7 +44,6 @@ config ARCH_BCM2835
select ARM_AMBA
select ARM_GIC
select ARM_TIMER_SP804
select BRCMSTB_L2_IRQ
help
This enables support for the Broadcom BCM2837 and BCM2711 SoC.
These SoCs are used in the Raspberry Pi 3 and 4 devices.
@ -82,8 +81,6 @@ config ARCH_BITMAIN
config ARCH_BRCMSTB
bool "Broadcom Set-Top-Box SoCs"
select ARCH_HAS_RESET_CONTROLLER
select BCM7038_L1_IRQ
select BRCMSTB_L2_IRQ
select GENERIC_IRQ_CHIP
select PINCTRL
help
@ -167,7 +164,6 @@ config ARCH_MEDIATEK
config ARCH_MESON
bool "Amlogic Platforms"
select COMMON_CLK
select MESON_IRQ_GPIO
help
This enables support for the arm64 based Amlogic SoCs
such as the s905, S905X/D, S912, A113X/D or S905X/D2

54
arch/arm64/kernel/entry-common.c
View File

@ -17,6 +17,7 @@
#include <asm/daifflags.h>
#include <asm/esr.h>
#include <asm/exception.h>
#include <asm/irq_regs.h>
#include <asm/kprobes.h>
#include <asm/mmu.h>
#include <asm/processor.h>
@ -219,22 +220,6 @@ static void noinstr arm64_exit_el1_dbg(struct pt_regs *regs)
lockdep_hardirqs_on(CALLER_ADDR0);
}
static void noinstr enter_el1_irq_or_nmi(struct pt_regs *regs)
{
if (IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && !interrupts_enabled(regs))
arm64_enter_nmi(regs);
else
enter_from_kernel_mode(regs);
}
static void noinstr exit_el1_irq_or_nmi(struct pt_regs *regs)
{
if (IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && !interrupts_enabled(regs))
arm64_exit_nmi(regs);
else
exit_to_kernel_mode(regs);
}
static void __sched arm64_preempt_schedule_irq(void)
{
lockdep_assert_irqs_disabled();
@ -263,10 +248,14 @@ static void __sched arm64_preempt_schedule_irq(void)
static void do_interrupt_handler(struct pt_regs *regs,
void (*handler)(struct pt_regs *))
{
struct pt_regs *old_regs = set_irq_regs(regs);
if (on_thread_stack())
call_on_irq_stack(regs, handler);
else
handler(regs);
set_irq_regs(old_regs);
}
extern void (*handle_arch_irq)(struct pt_regs *);
@ -432,13 +421,22 @@ asmlinkage void noinstr el1h_64_sync_handler(struct pt_regs *regs)
}
}
static void noinstr el1_interrupt(struct pt_regs *regs,
void (*handler)(struct pt_regs *))
static __always_inline void __el1_pnmi(struct pt_regs *regs,
void (*handler)(struct pt_regs *))
{
write_sysreg(DAIF_PROCCTX_NOIRQ, daif);
enter_el1_irq_or_nmi(regs);
arm64_enter_nmi(regs);
do_interrupt_handler(regs, handler);
arm64_exit_nmi(regs);
}
static __always_inline void __el1_irq(struct pt_regs *regs,
void (*handler)(struct pt_regs *))
{
enter_from_kernel_mode(regs);
irq_enter_rcu();
do_interrupt_handler(regs, handler);
irq_exit_rcu();
/*
* Note: thread_info::preempt_count includes both thread_info::count
@ -449,7 +447,17 @@ static void noinstr el1_interrupt(struct pt_regs *regs,
READ_ONCE(current_thread_info()->preempt_count) == 0)
arm64_preempt_schedule_irq();
exit_el1_irq_or_nmi(regs);
exit_to_kernel_mode(regs);
}
static void noinstr el1_interrupt(struct pt_regs *regs,
void (*handler)(struct pt_regs *))
{
write_sysreg(DAIF_PROCCTX_NOIRQ, daif);
if (IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && !interrupts_enabled(regs))
__el1_pnmi(regs, handler);
else
__el1_irq(regs, handler);
}
asmlinkage void noinstr el1h_64_irq_handler(struct pt_regs *regs)
@ -667,7 +675,9 @@ static void noinstr el0_interrupt(struct pt_regs *regs,
if (regs->pc & BIT(55))
arm64_apply_bp_hardening();
irq_enter_rcu();
do_interrupt_handler(regs, handler);
irq_exit_rcu();
exit_to_user_mode(regs);
}

1
arch/csky/Kconfig
View File

@ -17,7 +17,6 @@ config CSKY
select CSKY_APB_INTC
select DMA_DIRECT_REMAP
select IRQ_DOMAIN
select HANDLE_DOMAIN_IRQ
select DW_APB_TIMER_OF
select GENERIC_IOREMAP
select GENERIC_LIB_ASHLDI3

2
arch/csky/kernel/entry.S
View File

@ -249,7 +249,7 @@ ENTRY(csky_irq)
mov a0, sp
jbsr csky_do_IRQ
jbsr generic_handle_arch_irq
jmpi ret_from_exception

5
arch/csky/kernel/irq.c
View File

@ -15,8 +15,3 @@ void __init init_IRQ(void)
setup_smp_ipi();
#endif
}
asmlinkage void __irq_entry csky_do_IRQ(struct pt_regs *regs)
{
handle_arch_irq(regs);
}

2
arch/h8300/include/asm/irq.h
View File

@ -2,8 +2,6 @@
#ifndef _H8300_IRQ_H_
#define _H8300_IRQ_H_
#include <linux/irqchip.h>
#if defined(CONFIG_CPU_H8300H)
#define NR_IRQS 64
#define IRQ_CHIP h8300h_irq_chip

1
arch/h8300/kernel/irq.c
View File

@ -8,6 +8,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/irqdomain.h>
#include <linux/of_irq.h>
#include <asm/traps.h>

2
arch/mips/Kconfig
View File

@ -47,7 +47,6 @@ config MIPS
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL
select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
select HANDLE_DOMAIN_IRQ
select HAVE_ARCH_COMPILER_H
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT
@ -1782,6 +1781,7 @@ config CPU_BMIPS
select CPU_HAS_PREFETCH
select CPU_SUPPORTS_CPUFREQ
select MIPS_EXTERNAL_TIMER
select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
help
Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.

5
arch/mips/cavium-octeon/octeon-irq.c
View File

@ -2609,7 +2609,10 @@ static void octeon_irq_ciu3_ip2(void)
else
hw = intsn;
ret = handle_domain_irq(domain, hw, NULL);
irq_enter();
ret = generic_handle_domain_irq(domain, hw);
irq_exit();
if (ret < 0) {
union cvmx_ciu3_iscx_w1c isc_w1c;
u64 isc_w1c_addr = ciu3_addr + CIU3_ISC_W1C(intsn);

8
arch/mips/kernel/irq.c
View File

@ -111,15 +111,9 @@ void __irq_entry do_IRQ(unsigned int irq)
#ifdef CONFIG_IRQ_DOMAIN
void __irq_entry do_domain_IRQ(struct irq_domain *domain, unsigned int hwirq)
{
struct irq_desc *desc;
irq_enter();
check_stack_overflow();
desc = irq_resolve_mapping(domain, hwirq);
if (likely(desc))
handle_irq_desc(desc);
generic_handle_domain_irq(domain, hwirq);
irq_exit();
}
#endif

3
arch/mips/kernel/smp-bmips.c
View File

@ -26,6 +26,7 @@
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/kexec.h>
#include <linux/irq.h>
#include <asm/time.h>
#include <asm/processor.h>
@ -373,7 +374,7 @@ static int bmips_cpu_disable(void)
set_cpu_online(cpu, false);
calculate_cpu_foreign_map();
irq_cpu_offline();
irq_migrate_all_off_this_cpu();
clear_c0_status(IE_IRQ5);
local_flush_tlb_all();

1
arch/mips/loongson64/smp.c
View File

@ -550,7 +550,6 @@ static int loongson3_cpu_disable(void)
set_cpu_online(cpu, false);
calculate_cpu_foreign_map();
local_irq_save(flags);
irq_cpu_offline();
clear_c0_status(ST0_IM);
local_irq_restore(flags);
local_flush_tlb_all();

1
arch/nds32/Kconfig
View File

@ -27,7 +27,6 @@ config NDS32
select GENERIC_LIB_MULDI3
select GENERIC_LIB_UCMPDI2
select GENERIC_TIME_VSYSCALL
select HANDLE_DOMAIN_IRQ
select HAVE_ARCH_TRACEHOOK
select HAVE_DEBUG_KMEMLEAK
select HAVE_EXIT_THREAD

1
arch/openrisc/Kconfig
View File

@ -13,7 +13,6 @@ config OPENRISC
select OF
select OF_EARLY_FLATTREE
select IRQ_DOMAIN
select HANDLE_DOMAIN_IRQ
select GPIOLIB
select HAVE_ARCH_TRACEHOOK
select SPARSE_IRQ

4
arch/openrisc/kernel/entry.S
View File

@ -569,8 +569,8 @@ EXCEPTION_ENTRY(_external_irq_handler)
#endif
CLEAR_LWA_FLAG(r3)
l.addi r3,r1,0
l.movhi r8,hi(do_IRQ)
l.ori r8,r8,lo(do_IRQ)
l.movhi r8,hi(generic_handle_arch_irq)
l.ori r8,r8,lo(generic_handle_arch_irq)
l.jalr r8
l.nop
l.j _ret_from_intr

5
arch/openrisc/kernel/irq.c
View File

@ -36,8 +36,3 @@ void __init init_IRQ(void)
{
irqchip_init();
}
void __irq_entry do_IRQ(struct pt_regs *regs)
{
handle_arch_irq(regs);
}

1
arch/riscv/Kconfig
View File

@ -62,7 +62,6 @@ config RISCV
select GENERIC_SCHED_CLOCK
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL if MMU && 64BIT
select HANDLE_DOMAIN_IRQ
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE if !XIP_KERNEL

3
arch/riscv/kernel/entry.S
View File

@ -130,8 +130,7 @@ skip_context_tracking:
/* Handle interrupts */
move a0, sp /* pt_regs */
la a1, handle_arch_irq
REG_L a1, (a1)
la a1, generic_handle_arch_irq
jr a1
1:
/*

9
arch/riscv/kernel/smp.c
View File

@ -140,12 +140,9 @@ void arch_irq_work_raise(void)
void handle_IPI(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
unsigned long *pending_ipis = &ipi_data[smp_processor_id()].bits;
unsigned long *stats = ipi_data[smp_processor_id()].stats;
irq_enter();
riscv_clear_ipi();
while (true) {
@ -156,7 +153,7 @@ void handle_IPI(struct pt_regs *regs)
ops = xchg(pending_ipis, 0);
if (ops == 0)
goto done;
return;
if (ops & (1 << IPI_RESCHEDULE)) {
stats[IPI_RESCHEDULE]++;
@ -189,10 +186,6 @@ void handle_IPI(struct pt_regs *regs)
/* Order data access and bit testing. */
mb();
}
done:
irq_exit();
set_irq_regs(old_regs);
}
static const char * const ipi_names[] = {

3
arch/x86/include/asm/irq_stack.h
View File

@ -185,6 +185,7 @@
IRQ_CONSTRAINTS, regs, vector); \
}
#ifndef CONFIG_PREEMPT_RT
#define ASM_CALL_SOFTIRQ \
"call %P[__func] \n"
@ -201,6 +202,8 @@
__this_cpu_write(hardirq_stack_inuse, false); \
}
#endif
#else /* CONFIG_X86_64 */
/* System vector handlers always run on the stack they interrupted. */
#define run_sysvec_on_irqstack_cond(func, regs) \

2
arch/x86/kernel/irq_32.c
View File

@ -132,6 +132,7 @@ int irq_init_percpu_irqstack(unsigned int cpu)
return 0;
}
#ifndef CONFIG_PREEMPT_RT
void do_softirq_own_stack(void)
{
struct irq_stack *irqstk;
@ -148,6 +149,7 @@ void do_softirq_own_stack(void)
call_on_stack(__do_softirq, isp);
}
#endif
void __handle_irq(struct irq_desc *desc, struct pt_regs *regs)
{

25
drivers/irqchip/Kconfig
View File

@ -115,18 +115,24 @@ config BCM6345_L1_IRQ
select GENERIC_IRQ_EFFECTIVE_AFF_MASK
config BCM7038_L1_IRQ
bool
tristate "Broadcom STB 7038-style L1/L2 interrupt controller driver"
depends on ARCH_BRCMSTB || BMIPS_GENERIC
default ARCH_BRCMSTB || BMIPS_GENERIC
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
select GENERIC_IRQ_EFFECTIVE_AFF_MASK
config BCM7120_L2_IRQ
bool
tristate "Broadcom STB 7120-style L2 interrupt controller driver"
depends on ARCH_BRCMSTB || BMIPS_GENERIC
default ARCH_BRCMSTB || BMIPS_GENERIC
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
config BRCMSTB_L2_IRQ
bool
tristate "Broadcom STB generic L2 interrupt controller driver"
depends on ARCH_BCM2835 || ARCH_BRCMSTB || BMIPS_GENERIC
default ARCH_BCM2835 || ARCH_BRCMSTB || BMIPS_GENERIC
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
@ -400,8 +406,9 @@ config IRQ_UNIPHIER_AIDET
Support for the UniPhier AIDET (ARM Interrupt Detector).
config MESON_IRQ_GPIO
bool "Meson GPIO Interrupt Multiplexer"
depends on ARCH_MESON
tristate "Meson GPIO Interrupt Multiplexer"
depends on ARCH_MESON || COMPILE_TEST
default ARCH_MESON
select IRQ_DOMAIN_HIERARCHY
help
Support Meson SoC Family GPIO Interrupt Multiplexer
@ -602,4 +609,12 @@ config APPLE_AIC
Support for the Apple Interrupt Controller found on Apple Silicon SoCs,
such as the M1.
config MCHP_EIC
bool "Microchip External Interrupt Controller"
depends on ARCH_AT91 || COMPILE_TEST
select IRQ_DOMAIN
select IRQ_DOMAIN_HIERARCHY
help
Support for Microchip External Interrupt Controller.
endmenu

1
drivers/irqchip/Makefile
View File

@ -116,3 +116,4 @@ obj-$(CONFIG_MACH_REALTEK_RTL) += irq-realtek-rtl.o
obj-$(CONFIG_WPCM450_AIC) += irq-wpcm450-aic.o
obj-$(CONFIG_IRQ_IDT3243X) += irq-idt3243x.o
obj-$(CONFIG_APPLE_AIC) += irq-apple-aic.o
obj-$(CONFIG_MCHP_EIC) += irq-mchp-eic.o

20
drivers/irqchip/irq-apple-aic.c
View File

@ -245,7 +245,7 @@ static void __exception_irq_entry aic_handle_irq(struct pt_regs *regs)
irq = FIELD_GET(AIC_EVENT_NUM, event);
if (type == AIC_EVENT_TYPE_HW)
handle_domain_irq(aic_irqc->hw_domain, irq, regs);
generic_handle_domain_irq(aic_irqc->hw_domain, irq);
else if (type == AIC_EVENT_TYPE_IPI && irq == 1)
aic_handle_ipi(regs);
else if (event != 0)
@ -392,25 +392,25 @@ static void __exception_irq_entry aic_handle_fiq(struct pt_regs *regs)
}
if (TIMER_FIRING(read_sysreg(cntp_ctl_el0)))
handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL0_PHYS, regs);
generic_handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL0_PHYS);
if (TIMER_FIRING(read_sysreg(cntv_ctl_el0)))
handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL0_VIRT, regs);
generic_handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL0_VIRT);
if (is_kernel_in_hyp_mode()) {
uint64_t enabled = read_sysreg_s(SYS_IMP_APL_VM_TMR_FIQ_ENA_EL2);
if ((enabled & VM_TMR_FIQ_ENABLE_P) &&
TIMER_FIRING(read_sysreg_s(SYS_CNTP_CTL_EL02)))
handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL02_PHYS, regs);
generic_handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL02_PHYS);
if ((enabled & VM_TMR_FIQ_ENABLE_V) &&
TIMER_FIRING(read_sysreg_s(SYS_CNTV_CTL_EL02)))
handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL02_VIRT, regs);
generic_handle_domain_irq(aic_irqc->hw_domain,
aic_irqc->nr_hw + AIC_TMR_EL02_VIRT);
}
if ((read_sysreg_s(SYS_IMP_APL_PMCR0_EL1) & (PMCR0_IMODE | PMCR0_IACT)) ==
@ -674,7 +674,7 @@ static void aic_handle_ipi(struct pt_regs *regs)
firing = atomic_fetch_andnot(enabled, this_cpu_ptr(&aic_vipi_flag)) & enabled;
for_each_set_bit(i, &firing, AIC_NR_SWIPI)
handle_domain_irq(aic_irqc->ipi_domain, i, regs);
generic_handle_domain_irq(aic_irqc->ipi_domain, i);
/*
* No ordering needed here; at worst this just changes the timing of

13
drivers/irqchip/irq-armada-370-xp.c
View File

@ -589,12 +589,7 @@ static void armada_370_xp_handle_msi_irq(struct pt_regs *regs, bool is_chained)
irq = msinr - PCI_MSI_DOORBELL_START;
if (is_chained)
generic_handle_domain_irq(armada_370_xp_msi_inner_domain,
irq);
else
handle_domain_irq(armada_370_xp_msi_inner_domain,
irq, regs);
generic_handle_domain_irq(armada_370_xp_msi_inner_domain, irq);
}
}
#else
@ -646,8 +641,8 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
break;
if (irqnr > 1) {
handle_domain_irq(armada_370_xp_mpic_domain,
irqnr, regs);
generic_handle_domain_irq(armada_370_xp_mpic_domain,
irqnr);
continue;
}
@ -666,7 +661,7 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
& IPI_DOORBELL_MASK;
for_each_set_bit(ipi, &ipimask, IPI_DOORBELL_END)
handle_domain_irq(ipi_domain, ipi, regs);
generic_handle_domain_irq(ipi_domain, ipi);
}
#endif

2
drivers/irqchip/irq-aspeed-vic.c
View File

@ -100,7 +100,7 @@ static void __exception_irq_entry avic_handle_irq(struct pt_regs *regs)
if (stat == 0)
break;
irq += ffs(stat) - 1;
handle_domain_irq(vic->dom, irq, regs);
generic_handle_domain_irq(vic->dom, irq);
}
}

22
drivers/irqchip/irq-ativic32.c
View File

@ -5,11 +5,14 @@
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/hardirq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/irqchip.h>
#include <nds32_intrinsic.h>
#include <asm/irq_regs.h>
unsigned long wake_mask;
static void ativic32_ack_irq(struct irq_data *data)
@ -103,10 +106,25 @@ static irq_hw_number_t get_intr_src(void)
- NDS32_VECTOR_offINTERRUPT;
}
asmlinkage void asm_do_IRQ(struct pt_regs *regs)
static void ativic32_handle_irq(struct pt_regs *regs)
{
irq_hw_number_t hwirq = get_intr_src();
handle_domain_irq(root_domain, hwirq, regs);
generic_handle_domain_irq(root_domain, hwirq);
}
/*
* TODO: convert nds32 to GENERIC_IRQ_MULTI_HANDLER so that this entry logic
* can live in arch code.
*/
asmlinkage void asm_do_IRQ(struct pt_regs *regs)
{
struct pt_regs *old_regs;
irq_enter();
old_regs = set_irq_regs(regs);
ativic32_handle_irq(regs);
set_irq_regs(old_regs);
irq_exit();
}
int __init ativic32_init_irq(struct device_node *node, struct device_node *parent)

2
drivers/irqchip/irq-atmel-aic.c
View File

@ -71,7 +71,7 @@ aic_handle(struct pt_regs *regs)
if (!irqstat)
irq_reg_writel(gc, 0, AT91_AIC_EOICR);
else
handle_domain_irq(aic_domain, irqnr, regs);
generic_handle_domain_irq(aic_domain, irqnr);
}
static int aic_retrigger(struct irq_data *d)

2
drivers/irqchip/irq-atmel-aic5.c
View File

@ -80,7 +80,7 @@ aic5_handle(struct pt_regs *regs)
if (!irqstat)
irq_reg_writel(bgc, 0, AT91_AIC5_EOICR);
else
handle_domain_irq(aic5_domain, irqnr, regs);
generic_handle_domain_irq(aic5_domain, irqnr);
}
static void aic5_mask(struct irq_data *d)

2
drivers/irqchip/irq-bcm2835.c
View File

@ -246,7 +246,7 @@ static void __exception_irq_entry bcm2835_handle_irq(
u32 hwirq;
while ((hwirq = get_next_armctrl_hwirq()) != ~0)
handle_domain_irq(intc.domain, hwirq, regs);
generic_handle_domain_irq(intc.domain, hwirq);
}
static void bcm2836_chained_handle_irq(struct irq_desc *desc)

2
drivers/irqchip/irq-bcm2836.c
View File

@ -143,7 +143,7 @@ __exception_irq_entry bcm2836_arm_irqchip_handle_irq(struct pt_regs *regs)
if (stat) {
u32 hwirq = ffs(stat) - 1;
handle_domain_irq(intc.domain, hwirq, regs);
generic_handle_domain_irq(intc.domain, hwirq);
}
}

6
drivers/irqchip/irq-bcm6345-l1.c
View File

@ -132,16 +132,12 @@ static void bcm6345_l1_irq_handle(struct irq_desc *desc)
int base = idx * IRQS_PER_WORD;
unsigned long pending;
irq_hw_number_t hwirq;
unsigned int irq;
pending = __raw_readl(cpu->map_base + reg_status(intc, idx));
pending &= __raw_readl(cpu->map_base + reg_enable(intc, idx));
for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) {
irq = irq_linear_revmap(intc->domain, base + hwirq);
if (irq)
do_IRQ(irq);
else
if (generic_handle_domain_irq(intc->domain, base + hwirq))
spurious_interrupt();
}
}

47
drivers/irqchip/irq-bcm7038-l1.c
View File

@ -28,9 +28,6 @@
#include <linux/irqchip.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/syscore_ops.h>
#ifdef CONFIG_ARM
#include <asm/smp_plat.h>
#endif
#define IRQS_PER_WORD 32
#define REG_BYTES_PER_IRQ_WORD (sizeof(u32) * 4)
@ -127,7 +124,7 @@ static void bcm7038_l1_irq_handle(struct irq_desc *desc)
struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int idx;
#ifdef CONFIG_SMP
#if defined(CONFIG_SMP) && defined(CONFIG_MIPS)
cpu = intc->cpus[cpu_logical_map(smp_processor_id())];
#else
cpu = intc->cpus[0];
@ -194,6 +191,7 @@ static void bcm7038_l1_mask(struct irq_data *d)
raw_spin_unlock_irqrestore(&intc->lock, flags);
}
#if defined(CONFIG_MIPS) && defined(CONFIG_SMP)
static int bcm7038_l1_set_affinity(struct irq_data *d,
const struct cpumask *dest,
bool force)
@ -220,32 +218,6 @@ static int bcm7038_l1_set_affinity(struct irq_data *d,
return 0;
}
#ifdef CONFIG_SMP
static void bcm7038_l1_cpu_offline(struct irq_data *d)
{
struct cpumask *mask = irq_data_get_affinity_mask(d);
int cpu = smp_processor_id();
cpumask_t new_affinity;
/* This CPU was not on the affinity mask */
if (!cpumask_test_cpu(cpu, mask))
return;
if (cpumask_weight(mask) > 1) {
/*
* Multiple CPU affinity, remove this CPU from the affinity
* mask
*/
cpumask_copy(&new_affinity, mask);
cpumask_clear_cpu(cpu, &new_affinity);
} else {
/* Only CPU, put on the lowest online CPU */
cpumask_clear(&new_affinity);
cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity);
}
irq_set_affinity_locked(d, &new_affinity, false);
}
#endif
static int __init bcm7038_l1_init_one(struct device_node *dn,
@ -328,7 +300,7 @@ static int bcm7038_l1_suspend(void)
u32 val;
/* Wakeup interrupt should only come from the boot cpu */
#ifdef CONFIG_SMP
#if defined(CONFIG_SMP) && defined(CONFIG_MIPS)
boot_cpu = cpu_logical_map(0);
#else
boot_cpu = 0;
@ -352,7 +324,7 @@ static void bcm7038_l1_resume(void)
struct bcm7038_l1_chip *intc;
int boot_cpu, word;
#ifdef CONFIG_SMP
#if defined(CONFIG_SMP) && defined(CONFIG_MIPS)
boot_cpu = cpu_logical_map(0);
#else
boot_cpu = 0;
@ -395,9 +367,8 @@ static struct irq_chip bcm7038_l1_irq_chip = {
.name = "bcm7038-l1",
.irq_mask = bcm7038_l1_mask,
.irq_unmask = bcm7038_l1_unmask,
#if defined(CONFIG_SMP) && defined(CONFIG_MIPS)
.irq_set_affinity = bcm7038_l1_set_affinity,
#ifdef CONFIG_SMP
.irq_cpu_offline = bcm7038_l1_cpu_offline,
#endif
#ifdef CONFIG_PM_SLEEP
.irq_set_wake = bcm7038_l1_set_wake,
@ -416,7 +387,7 @@ static int bcm7038_l1_map(struct irq_domain *d, unsigned int virq,
irq_set_chip_and_handler(virq, &bcm7038_l1_irq_chip, handle_level_irq);
irq_set_chip_data(virq, d->host_data);
irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(virq)));
irqd_set_single_target(irq_get_irq_data(virq));
return 0;
}
@ -484,4 +455,8 @@ static int __init bcm7038_l1_of_init(struct device_node *dn,
return ret;
}
IRQCHIP_DECLARE(bcm7038_l1, "brcm,bcm7038-l1-intc", bcm7038_l1_of_init);
IRQCHIP_PLATFORM_DRIVER_BEGIN(bcm7038_l1)
IRQCHIP_MATCH("brcm,bcm7038-l1-intc", bcm7038_l1_of_init)
IRQCHIP_PLATFORM_DRIVER_END(bcm7038_l1)
MODULE_DESCRIPTION("Broadcom STB 7038-style L1/L2 interrupt controller");
MODULE_LICENSE("GPL v2");

21
drivers/irqchip/irq-bcm7120-l2.c
View File

@ -220,6 +220,7 @@ static int __init bcm7120_l2_intc_probe(struct device_node *dn,
{
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
struct bcm7120_l2_intc_data *data;
struct platform_device *pdev;
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
int ret = 0;
@ -230,7 +231,13 @@ static int __init bcm7120_l2_intc_probe(struct device_node *dn,
if (!data)
return -ENOMEM;
data->num_parent_irqs = of_irq_count(dn);
pdev = of_find_device_by_node(dn);
if (!pdev) {
ret = -ENODEV;
goto out_free_data;
}
data->num_parent_irqs = platform_irq_count(pdev);
if (data->num_parent_irqs <= 0) {
pr_err("invalid number of parent interrupts\n");
ret = -ENOMEM;
@ -329,6 +336,7 @@ static int __init bcm7120_l2_intc_probe(struct device_node *dn,
if (data->map_base[idx])
iounmap(data->map_base[idx]);
}
out_free_data:
kfree(data);
return ret;
}
@ -347,8 +355,9 @@ static int __init bcm7120_l2_intc_probe_3380(struct device_node *dn,
"BCM3380 L2");
}
IRQCHIP_DECLARE(bcm7120_l2_intc, "brcm,bcm7120-l2-intc",
bcm7120_l2_intc_probe_7120);
IRQCHIP_DECLARE(bcm3380_l2_intc, "brcm,bcm3380-l2-intc",
bcm7120_l2_intc_probe_3380);
IRQCHIP_PLATFORM_DRIVER_BEGIN(bcm7120_l2)
IRQCHIP_MATCH("brcm,bcm7120-l2-intc", bcm7120_l2_intc_probe_7120)
IRQCHIP_MATCH("brcm,bcm3380-l2-intc", bcm7120_l2_intc_probe_3380)
IRQCHIP_PLATFORM_DRIVER_END(bcm7120_l2)
MODULE_DESCRIPTION("Broadcom STB 7120-style L2 interrupt controller driver");
MODULE_LICENSE("GPL v2");

16
drivers/irqchip/irq-brcmstb-l2.c
View File

@ -275,16 +275,18 @@ static int __init brcmstb_l2_edge_intc_of_init(struct device_node *np,
{
return brcmstb_l2_intc_of_init(np, parent, &l2_edge_intc_init);
}
IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,l2-intc", brcmstb_l2_edge_intc_of_init);
IRQCHIP_DECLARE(brcmstb_hif_spi_l2_intc, "brcm,hif-spi-l2-intc",
brcmstb_l2_edge_intc_of_init);
IRQCHIP_DECLARE(brcmstb_upg_aux_aon_l2_intc, "brcm,upg-aux-aon-l2-intc",
brcmstb_l2_edge_intc_of_init);
static int __init brcmstb_l2_lvl_intc_of_init(struct device_node *np,
struct device_node *parent)
{
return brcmstb_l2_intc_of_init(np, parent, &l2_lvl_intc_init);
}
IRQCHIP_DECLARE(bcm7271_l2_intc, "brcm,bcm7271-l2-intc",
brcmstb_l2_lvl_intc_of_init);
IRQCHIP_PLATFORM_DRIVER_BEGIN(brcmstb_l2)
IRQCHIP_MATCH("brcm,l2-intc", brcmstb_l2_edge_intc_of_init)
IRQCHIP_MATCH("brcm,hif-spi-l2-intc", brcmstb_l2_edge_intc_of_init)
IRQCHIP_MATCH("brcm,upg-aux-aon-l2-intc", brcmstb_l2_edge_intc_of_init)
IRQCHIP_MATCH("brcm,bcm7271-l2-intc", brcmstb_l2_lvl_intc_of_init)
IRQCHIP_PLATFORM_DRIVER_END(brcmstb_l2)
MODULE_DESCRIPTION("Broadcom STB generic L2 interrupt controller");
MODULE_LICENSE("GPL v2");

8
drivers/irqchip/irq-clps711x.c
View File

@ -77,14 +77,14 @@ static asmlinkage void __exception_irq_entry clps711x_irqh(struct pt_regs *regs)
irqstat = readw_relaxed(clps711x_intc->intmr[0]) &
readw_relaxed(clps711x_intc->intsr[0]);
if (irqstat)
handle_domain_irq(clps711x_intc->domain,
fls(irqstat) - 1, regs);
generic_handle_domain_irq(clps711x_intc->domain,
fls(irqstat) - 1);
irqstat = readw_relaxed(clps711x_intc->intmr[1]) &
readw_relaxed(clps711x_intc->intsr[1]);
if (irqstat)
handle_domain_irq(clps711x_intc->domain,
fls(irqstat) - 1 + 16, regs);
generic_handle_domain_irq(clps711x_intc->domain,
fls(irqstat) - 1 + 16);
} while (irqstat);
}

2
drivers/irqchip/irq-csky-apb-intc.c
View File

@ -138,7 +138,7 @@ static inline bool handle_irq_perbit(struct pt_regs *regs, u32 hwirq,
if (hwirq == 0)
return 0;
handle_domain_irq(root_domain, irq_base + __fls(hwirq), regs);
generic_handle_domain_irq(root_domain, irq_base + __fls(hwirq));
return 1;
}

4
drivers/irqchip/irq-csky-mpintc.c
View File

@ -74,8 +74,8 @@ static void csky_mpintc_handler(struct pt_regs *regs)
{
void __iomem *reg_base = this_cpu_read(intcl_reg);
handle_domain_irq(root_domain,
readl_relaxed(reg_base + INTCL_RDYIR), regs);
generic_handle_domain_irq(root_domain,
readl_relaxed(reg_base + INTCL_RDYIR));
}
static void csky_mpintc_enable(struct irq_data *d)

2
drivers/irqchip/irq-davinci-aintc.c
View File

@ -73,7 +73,7 @@ davinci_aintc_handle_irq(struct pt_regs *regs)
irqnr >>= 2;
irqnr -= 1;
handle_domain_irq(davinci_aintc_irq_domain, irqnr, regs);
generic_handle_domain_irq(davinci_aintc_irq_domain, irqnr);
}
/* ARM Interrupt Controller Initialization */

2
drivers/irqchip/irq-davinci-cp-intc.c
View File

@ -135,7 +135,7 @@ davinci_cp_intc_handle_irq(struct pt_regs *regs)
return;
}
handle_domain_irq(davinci_cp_intc_irq_domain, irqnr, regs);
generic_handle_domain_irq(davinci_cp_intc_irq_domain, irqnr);
}
static int davinci_cp_intc_host_map(struct irq_domain *h, unsigned int virq,

2
drivers/irqchip/irq-digicolor.c
View File

@ -50,7 +50,7 @@ static void __exception_irq_entry digicolor_handle_irq(struct pt_regs *regs)
return;
}
handle_domain_irq(digicolor_irq_domain, hwirq, regs);
generic_handle_domain_irq(digicolor_irq_domain, hwirq);
} while (1);
}

2
drivers/irqchip/irq-dw-apb-ictl.c
View File

@ -42,7 +42,7 @@ static void __irq_entry dw_apb_ictl_handle_irq(struct pt_regs *regs)
while (stat) {
u32 hwirq = ffs(stat) - 1;
handle_domain_irq(d, hwirq, regs);
generic_handle_domain_irq(d, hwirq);
stat &= ~BIT(hwirq);
}
}

2
drivers/irqchip/irq-ftintc010.c
View File

@ -134,7 +134,7 @@ asmlinkage void __exception_irq_entry ft010_irqchip_handle_irq(struct pt_regs *r
while ((status = readl(FT010_IRQ_STATUS(f->base)))) {
irq = ffs(status) - 1;
handle_domain_irq(f->domain, irq, regs);
generic_handle_domain_irq(f->domain, irq);
}
}

4
drivers/irqchip/irq-gic-v3.c
View File

@ -660,7 +660,7 @@ static inline void gic_handle_nmi(u32 irqnr, struct pt_regs *regs)
* PSR.I will be restored when we ERET to the
* interrupted context.
*/
err = handle_domain_nmi(gic_data.domain, irqnr, regs);
err = generic_handle_domain_nmi(gic_data.domain, irqnr);
if (err)
gic_deactivate_unhandled(irqnr);
@ -728,7 +728,7 @@ static asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs
else
isb();
if (handle_domain_irq(gic_data.domain, irqnr, regs)) {
if (generic_handle_domain_irq(gic_data.domain, irqnr)) {
WARN_ONCE(true, "Unexpected interrupt received!\n");
gic_deactivate_unhandled(irqnr);
}

2
drivers/irqchip/irq-gic.c
View File

@ -369,7 +369,7 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
this_cpu_write(sgi_intid, irqstat);
}
handle_domain_irq(gic->domain, irqnr, regs);
generic_handle_domain_irq(gic->domain, irqnr);
} while (1);
}

2
drivers/irqchip/irq-hip04.c
View File

@ -206,7 +206,7 @@ static void __exception_irq_entry hip04_handle_irq(struct pt_regs *regs)
irqnr = irqstat & GICC_IAR_INT_ID_MASK;
if (irqnr <= HIP04_MAX_IRQS)
handle_domain_irq(hip04_data.domain, irqnr, regs);
generic_handle_domain_irq(hip04_data.domain, irqnr);
} while (irqnr > HIP04_MAX_IRQS);
}

4
drivers/irqchip/irq-ixp4xx.c
View File

@ -114,7 +114,7 @@ asmlinkage void __exception_irq_entry ixp4xx_handle_irq(struct pt_regs *regs)
status = __raw_readl(ixi->irqbase + IXP4XX_ICIP);
for_each_set_bit(i, &status, 32)
handle_domain_irq(ixi->domain, i, regs);
generic_handle_domain_irq(ixi->domain, i);
/*
* IXP465/IXP435 has an upper IRQ status register
@ -122,7 +122,7 @@ asmlinkage void __exception_irq_entry ixp4xx_handle_irq(struct pt_regs *regs)
if (ixi->is_356) {
status = __raw_readl(ixi->irqbase + IXP4XX_ICIP2);
for_each_set_bit(i, &status, 32)
handle_domain_irq(ixi->domain, i + 32, regs);
generic_handle_domain_irq(ixi->domain, i + 32);
}
}

2
drivers/irqchip/irq-lpc32xx.c
View File

@ -126,7 +126,7 @@ static void __exception_irq_entry lpc32xx_handle_irq(struct pt_regs *regs)
while (hwirq) {
irq = __ffs(hwirq);
hwirq &= ~BIT(irq);
handle_domain_irq(lpc32xx_mic_irqc->domain, irq, regs);
generic_handle_domain_irq(lpc32xx_mic_irqc->domain, irq);
}
}

280
drivers/irqchip/irq-mchp-eic.c Normal file
View File

@ -0,0 +1,280 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Microchip External Interrupt Controller driver
*
* Copyright (C) 2021 Microchip Technology Inc. and its subsidiaries
*
* Author: Claudiu Beznea <claudiu.beznea@microchip.com>
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/irqchip.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/syscore_ops.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#define MCHP_EIC_GFCS (0x0)
#define MCHP_EIC_SCFG(x) (0x4 + (x) * 0x4)
#define MCHP_EIC_SCFG_EN BIT(16)
#define MCHP_EIC_SCFG_LVL BIT(9)
#define MCHP_EIC_SCFG_POL BIT(8)
#define MCHP_EIC_NIRQ (2)
/*
* struct mchp_eic - EIC private data structure
* @base: base address
* @clk: peripheral clock
* @domain: irq domain
* @irqs: irqs b/w eic and gic
* @scfg: backup for scfg registers (necessary for backup and self-refresh mode)
* @wakeup_source: wakeup source mask
*/
struct mchp_eic {
void __iomem *base;
struct clk *clk;
struct irq_domain *domain;
u32 irqs[MCHP_EIC_NIRQ];
u32 scfg[MCHP_EIC_NIRQ];
u32 wakeup_source;
};
static struct mchp_eic *eic;
static void mchp_eic_irq_mask(struct irq_data *d)
{
unsigned int tmp;
tmp = readl_relaxed(eic->base + MCHP_EIC_SCFG(d->hwirq));
tmp &= ~MCHP_EIC_SCFG_EN;
writel_relaxed(tmp, eic->base + MCHP_EIC_SCFG(d->hwirq));
irq_chip_mask_parent(d);
}
static void mchp_eic_irq_unmask(struct irq_data *d)
{
unsigned int tmp;
tmp = readl_relaxed(eic->base + MCHP_EIC_SCFG(d->hwirq));
tmp |= MCHP_EIC_SCFG_EN;
writel_relaxed(tmp, eic->base + MCHP_EIC_SCFG(d->hwirq));
irq_chip_unmask_parent(d);
}
static int mchp_eic_irq_set_type(struct irq_data *d, unsigned int type)
{
unsigned int parent_irq_type;
unsigned int tmp;
tmp = readl_relaxed(eic->base + MCHP_EIC_SCFG(d->hwirq));
tmp &= ~(MCHP_EIC_SCFG_POL | MCHP_EIC_SCFG_LVL);
switch (type) {
case IRQ_TYPE_LEVEL_HIGH:
tmp |= MCHP_EIC_SCFG_POL | MCHP_EIC_SCFG_LVL;
parent_irq_type = IRQ_TYPE_LEVEL_HIGH;
break;
case IRQ_TYPE_LEVEL_LOW:
tmp |= MCHP_EIC_SCFG_LVL;
parent_irq_type = IRQ_TYPE_LEVEL_HIGH;
break;
case IRQ_TYPE_EDGE_RISING:
parent_irq_type = IRQ_TYPE_EDGE_RISING;
break;
case IRQ_TYPE_EDGE_FALLING:
tmp |= MCHP_EIC_SCFG_POL;
parent_irq_type = IRQ_TYPE_EDGE_RISING;
break;
default:
return -EINVAL;
}
writel_relaxed(tmp, eic->base + MCHP_EIC_SCFG(d->hwirq));
return irq_chip_set_type_parent(d, parent_irq_type);
}
static int mchp_eic_irq_set_wake(struct irq_data *d, unsigned int on)
{
irq_set_irq_wake(eic->irqs[d->hwirq], on);
if (on)
eic->wakeup_source |= BIT(d->hwirq);
else
eic->wakeup_source &= ~BIT(d->hwirq);
return 0;
}
static int mchp_eic_irq_suspend(void)
{
unsigned int hwirq;
for (hwirq = 0; hwirq < MCHP_EIC_NIRQ; hwirq++)
eic->scfg[hwirq] = readl_relaxed(eic->base +
MCHP_EIC_SCFG(hwirq));
if (!eic->wakeup_source)
clk_disable_unprepare(eic->clk);
return 0;
}
static void mchp_eic_irq_resume(void)
{
unsigned int hwirq;
if (!eic->wakeup_source)
clk_prepare_enable(eic->clk);
for (hwirq = 0; hwirq < MCHP_EIC_NIRQ; hwirq++)
writel_relaxed(eic->scfg[hwirq], eic->base +
MCHP_EIC_SCFG(hwirq));
}
static struct syscore_ops mchp_eic_syscore_ops = {
.suspend = mchp_eic_irq_suspend,
.resume = mchp_eic_irq_resume,
};
static struct irq_chip mchp_eic_chip = {
.name = "eic",
.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SET_TYPE_MASKED,
.irq_mask = mchp_eic_irq_mask,
.irq_unmask = mchp_eic_irq_unmask,
.irq_set_type = mchp_eic_irq_set_type,
.irq_ack = irq_chip_ack_parent,
.irq_eoi = irq_chip_eoi_parent,
.irq_retrigger = irq_chip_retrigger_hierarchy,
.irq_set_wake = mchp_eic_irq_set_wake,
};
static int mchp_eic_domain_alloc(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs, void *data)
{
struct irq_fwspec *fwspec = data;
struct irq_fwspec parent_fwspec;
irq_hw_number_t hwirq;
unsigned int type;
int ret;
if (WARN_ON(nr_irqs != 1))
return -EINVAL;
ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type);
if (ret || hwirq >= MCHP_EIC_NIRQ)
return ret;
switch (type) {
case IRQ_TYPE_EDGE_RISING:
case IRQ_TYPE_LEVEL_HIGH:
break;
case IRQ_TYPE_EDGE_FALLING:
type = IRQ_TYPE_EDGE_RISING;
break;
case IRQ_TYPE_LEVEL_LOW:
type = IRQ_TYPE_LEVEL_HIGH;
break;
default:
return -EINVAL;
}
irq_domain_set_hwirq_and_chip(domain, virq, hwirq, &mchp_eic_chip, eic);
parent_fwspec.fwnode = domain->parent->fwnode;
parent_fwspec.param_count = 3;
parent_fwspec.param[0] = GIC_SPI;
parent_fwspec.param[1] = eic->irqs[hwirq];
parent_fwspec.param[2] = type;
return irq_domain_alloc_irqs_parent(domain, virq, 1, &parent_fwspec);
}
static const struct irq_domain_ops mchp_eic_domain_ops = {
.translate = irq_domain_translate_twocell,
.alloc = mchp_eic_domain_alloc,
.free = irq_domain_free_irqs_common,
};
static int mchp_eic_init(struct device_node *node, struct device_node *parent)
{
struct irq_domain *parent_domain = NULL;
int ret, i;
eic = kzalloc(sizeof(*eic), GFP_KERNEL);
if (!eic)
return -ENOMEM;
eic->base = of_iomap(node, 0);
if (!eic->base) {
ret = -ENOMEM;
goto free;
}
parent_domain = irq_find_host(parent);
if (!parent_domain) {
ret = -ENODEV;
goto unmap;
}
eic->clk = of_clk_get_by_name(node, "pclk");
if (IS_ERR(eic->clk)) {
ret = PTR_ERR(eic->clk);
goto unmap;
}
ret = clk_prepare_enable(eic->clk);
if (ret)
goto unmap;
for (i = 0; i < MCHP_EIC_NIRQ; i++) {
struct of_phandle_args irq;
/* Disable it, if any. */
writel_relaxed(0UL, eic->base + MCHP_EIC_SCFG(i));
ret = of_irq_parse_one(node, i, &irq);
if (ret)
goto clk_unprepare;
if (WARN_ON(irq.args_count != 3)) {
ret = -EINVAL;
goto clk_unprepare;
}
eic->irqs[i] = irq.args[1];
}
eic->domain = irq_domain_add_hierarchy(parent_domain, 0, MCHP_EIC_NIRQ,
node, &mchp_eic_domain_ops, eic);
if (!eic->domain) {
pr_err("%pOF: Failed to add domain\n", node);
ret = -ENODEV;
goto clk_unprepare;
}
register_syscore_ops(&mchp_eic_syscore_ops);
pr_info("%pOF: EIC registered, nr_irqs %u\n", node, MCHP_EIC_NIRQ);
return 0;
clk_unprepare:
clk_disable_unprepare(eic->clk);
unmap:
iounmap(eic->base);
free:
kfree(eic);
return ret;
}
IRQCHIP_PLATFORM_DRIVER_BEGIN(mchp_eic)
IRQCHIP_MATCH("microchip,sama7g5-eic", mchp_eic_init)
IRQCHIP_PLATFORM_DRIVER_END(mchp_eic)
MODULE_DESCRIPTION("Microchip External Interrupt Controller");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Claudiu Beznea <claudiu.beznea@microchip.com>");

15
drivers/irqchip/irq-meson-gpio.c
View File

@ -436,8 +436,7 @@ static const struct irq_domain_ops meson_gpio_irq_domain_ops = {
.translate = meson_gpio_irq_domain_translate,
};
static int __init meson_gpio_irq_parse_dt(struct device_node *node,
struct meson_gpio_irq_controller *ctl)
static int meson_gpio_irq_parse_dt(struct device_node *node, struct meson_gpio_irq_controller *ctl)
{
const struct of_device_id *match;
int ret;
@ -463,8 +462,7 @@ static int __init meson_gpio_irq_parse_dt(struct device_node *node,
return 0;
}
static int __init meson_gpio_irq_of_init(struct device_node *node,
struct device_node *parent)
static int meson_gpio_irq_of_init(struct device_node *node, struct device_node *parent)
{
struct irq_domain *domain, *parent_domain;
struct meson_gpio_irq_controller *ctl;
@ -521,5 +519,10 @@ static int __init meson_gpio_irq_of_init(struct device_node *node,
return ret;
}
IRQCHIP_DECLARE(meson_gpio_intc, "amlogic,meson-gpio-intc",
meson_gpio_irq_of_init);
IRQCHIP_PLATFORM_DRIVER_BEGIN(meson_gpio_intc)
IRQCHIP_MATCH("amlogic,meson-gpio-intc", meson_gpio_irq_of_init)
IRQCHIP_PLATFORM_DRIVER_END(meson_gpio_intc)
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:meson-gpio-intc");

37
drivers/irqchip/irq-mips-gic.c
View File

@ -381,24 +381,35 @@ static void gic_unmask_local_irq_all_vpes(struct irq_data *d)
spin_unlock_irqrestore(&gic_lock, flags);
}
static void gic_all_vpes_irq_cpu_online(struct irq_data *d)
static void gic_all_vpes_irq_cpu_online(void)
{
struct gic_all_vpes_chip_data *cd;
unsigned int intr;
static const unsigned int local_intrs[] = {
GIC_LOCAL_INT_TIMER,
GIC_LOCAL_INT_PERFCTR,
GIC_LOCAL_INT_FDC,
};
unsigned long flags;
int i;
intr = GIC_HWIRQ_TO_LOCAL(d->hwirq);
cd = irq_data_get_irq_chip_data(d);
spin_lock_irqsave(&gic_lock, flags);
write_gic_vl_map(mips_gic_vx_map_reg(intr), cd->map);
if (cd->mask)
write_gic_vl_smask(BIT(intr));
for (i = 0; i < ARRAY_SIZE(local_intrs); i++) {
unsigned int intr = local_intrs[i];
struct gic_all_vpes_chip_data *cd;
cd = &gic_all_vpes_chip_data[intr];
write_gic_vl_map(mips_gic_vx_map_reg(intr), cd->map);
if (cd->mask)
write_gic_vl_smask(BIT(intr));
}
spin_unlock_irqrestore(&gic_lock, flags);
}
static struct irq_chip gic_all_vpes_local_irq_controller = {
.name = "MIPS GIC Local",
.irq_mask = gic_mask_local_irq_all_vpes,
.irq_unmask = gic_unmask_local_irq_all_vpes,
.irq_cpu_online = gic_all_vpes_irq_cpu_online,
};
static void __gic_irq_dispatch(void)
@ -477,6 +488,10 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int virq,
intr = GIC_HWIRQ_TO_LOCAL(hwirq);
map = GIC_MAP_PIN_MAP_TO_PIN | gic_cpu_pin;
/*
* If adding support for more per-cpu interrupts, keep the the
* array in gic_all_vpes_irq_cpu_online() in sync.
*/
switch (intr) {
case GIC_LOCAL_INT_TIMER:
/* CONFIG_MIPS_CMP workaround (see __gic_init) */
@ -663,8 +678,8 @@ static int gic_cpu_startup(unsigned int cpu)
/* Clear all local IRQ masks (ie. disable all local interrupts) */
write_gic_vl_rmask(~0);
/* Invoke irq_cpu_online callbacks to enable desired interrupts */
irq_cpu_online();
/* Enable desired interrupts */
gic_all_vpes_irq_cpu_online();
return 0;
}

4
drivers/irqchip/irq-mmp.c
View File

@ -230,7 +230,7 @@ static void __exception_irq_entry mmp_handle_irq(struct pt_regs *regs)
if (!(hwirq & SEL_INT_PENDING))
return;
hwirq &= SEL_INT_NUM_MASK;
handle_domain_irq(icu_data[0].domain, hwirq, regs);
generic_handle_domain_irq(icu_data[0].domain, hwirq);
}
static void __exception_irq_entry mmp2_handle_irq(struct pt_regs *regs)
@ -241,7 +241,7 @@ static void __exception_irq_entry mmp2_handle_irq(struct pt_regs *regs)
if (!(hwirq & SEL_INT_PENDING))
return;
hwirq &= SEL_INT_NUM_MASK;
handle_domain_irq(icu_data[0].domain, hwirq, regs);
generic_handle_domain_irq(icu_data[0].domain, hwirq);
}
/* MMP (ARMv5) */

4
drivers/irqchip/irq-mvebu-icu.c
View File

@ -347,7 +347,6 @@ builtin_platform_driver(mvebu_icu_subset_driver);
static int mvebu_icu_probe(struct platform_device *pdev)
{
struct mvebu_icu *icu;
struct resource *res;
int i;
icu = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_icu),
@ -357,8 +356,7 @@ static int mvebu_icu_probe(struct platform_device *pdev)
icu->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
icu->base = devm_ioremap_resource(&pdev->dev, res);
icu->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(icu->base))
return PTR_ERR(icu->base);

4
drivers/irqchip/irq-mvebu-pic.c
View File

@ -121,14 +121,12 @@ static int mvebu_pic_probe(struct platform_device *pdev)
struct device_node *node = pdev->dev.of_node;
struct mvebu_pic *pic;
struct irq_chip *irq_chip;
struct resource *res;
pic = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_pic), GFP_KERNEL);
if (!pic)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pic->base = devm_ioremap_resource(&pdev->dev, res);
pic->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pic->base))
return PTR_ERR(pic->base);

2
drivers/irqchip/irq-mxs.c
View File

@ -136,7 +136,7 @@ asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs)
irqnr = __raw_readl(icoll_priv.stat);
__raw_writel(irqnr, icoll_priv.vector);
handle_domain_irq(icoll_domain, irqnr, regs);
generic_handle_domain_irq(icoll_domain, irqnr);
}
static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq,

17
drivers/irqchip/irq-nvic.c
View File

@ -37,10 +37,25 @@
static struct irq_domain *nvic_irq_domain;
static void __nvic_handle_irq(irq_hw_number_t hwirq)
{
generic_handle_domain_irq(nvic_irq_domain, hwirq);
}
/*
* TODO: restructure the ARMv7M entry logic so that this entry logic can live
* in arch code.
*/
asmlinkage void __exception_irq_entry
nvic_handle_irq(irq_hw_number_t hwirq, struct pt_regs *regs)
{
handle_domain_irq(nvic_irq_domain, hwirq, regs);
struct pt_regs *old_regs;
irq_enter();
old_regs = set_irq_regs(regs);
__nvic_handle_irq(hwirq);
set_irq_regs(old_regs);
irq_exit();
}
static int nvic_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,

2
drivers/irqchip/irq-omap-intc.c
View File

@ -357,7 +357,7 @@ omap_intc_handle_irq(struct pt_regs *regs)
}
irqnr &= ACTIVEIRQ_MASK;
handle_domain_irq(domain, irqnr, regs);
generic_handle_domain_irq(domain, irqnr);
}
static int __init intc_of_init(struct device_node *node,

2
drivers/irqchip/irq-or1k-pic.c
View File

@ -116,7 +116,7 @@ static void or1k_pic_handle_irq(struct pt_regs *regs)
int irq = -1;
while ((irq = pic_get_irq(irq + 1)) != NO_IRQ)
handle_domain_irq(root_domain, irq, regs);
generic_handle_domain_irq(root_domain, irq);
}
static int or1k_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)

4
drivers/irqchip/irq-orion.c
View File

@ -42,8 +42,8 @@ __exception_irq_entry orion_handle_irq(struct pt_regs *regs)
gc->mask_cache;
while (stat) {
u32 hwirq = __fls(stat);
handle_domain_irq(orion_irq_domain,
gc->irq_base + hwirq, regs);
generic_handle_domain_irq(orion_irq_domain,
gc->irq_base + hwirq);
stat &= ~(1 << hwirq);
}
}

2
drivers/irqchip/irq-rda-intc.c
View File

@ -53,7 +53,7 @@ static void __exception_irq_entry rda_handle_irq(struct pt_regs *regs)
while (stat) {
hwirq = __fls(stat);
handle_domain_irq(rda_irq_domain, hwirq, regs);
generic_handle_domain_irq(rda_irq_domain, hwirq);
stat &= ~BIT(hwirq);
}
}

2
drivers/irqchip/irq-riscv-intc.c
View File

@ -37,7 +37,7 @@ static asmlinkage void riscv_intc_irq(struct pt_regs *regs)
break;
#endif
default:
handle_domain_irq(intc_domain, cause, regs);
generic_handle_domain_irq(intc_domain, cause);
break;
}
}

4
drivers/irqchip/irq-sa11x0.c
View File

@ -140,8 +140,8 @@ sa1100_handle_irq(struct pt_regs *regs)
if (mask == 0)
break;
handle_domain_irq(sa1100_normal_irqdomain,
ffs(mask) - 1, regs);
generic_handle_domain_irq(sa1100_normal_irqdomain,
ffs(mask) - 1);
} while (1);
}

4
drivers/irqchip/irq-stm32-exti.c
View File

@ -850,7 +850,6 @@ static int stm32_exti_probe(struct platform_device *pdev)
struct irq_domain *parent_domain, *domain;
struct stm32_exti_host_data *host_data;
const struct stm32_exti_drv_data *drv_data;
struct resource *res;
host_data = devm_kzalloc(dev, sizeof(*host_data), GFP_KERNEL);
if (!host_data)
@ -888,8 +887,7 @@ static int stm32_exti_probe(struct platform_device *pdev)
if (!host_data->chips_data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host_data->base = devm_ioremap_resource(dev, res);
host_data->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(host_data->base))
return PTR_ERR(host_data->base);

2
drivers/irqchip/irq-sun4i.c
View File

@ -195,7 +195,7 @@ static void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs)
return;
do {
handle_domain_irq(irq_ic_data->irq_domain, hwirq, regs);
generic_handle_domain_irq(irq_ic_data->irq_domain, hwirq);
hwirq = readl(irq_ic_data->irq_base +
SUN4I_IRQ_VECTOR_REG) >> 2;
} while (hwirq != 0);

4
drivers/irqchip/irq-ti-sci-inta.c
View File

@ -650,7 +650,6 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
struct device_node *parent_node, *node;
struct ti_sci_inta_irq_domain *inta;
struct device *dev = &pdev->dev;
struct resource *res;
int ret;
node = dev_of_node(dev);
@ -694,8 +693,7 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
return PTR_ERR(inta->global_event);
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
inta->base = devm_ioremap_resource(dev, res);
inta->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(inta->base))
return PTR_ERR(inta->base);

4
drivers/irqchip/irq-ts4800.c
View File

@ -93,15 +93,13 @@ static int ts4800_ic_probe(struct platform_device *pdev)
struct device_node *node = pdev->dev.of_node;
struct ts4800_irq_data *data;
struct irq_chip *irq_chip;
struct resource *res;
int parent_irq;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->base = devm_ioremap_resource(&pdev->dev, res);
data->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(data->base))
return PTR_ERR(data->base);

2
drivers/irqchip/irq-versatile-fpga.c
View File

@ -105,7 +105,7 @@ static int handle_one_fpga(struct fpga_irq_data *f, struct pt_regs *regs)
while ((status = readl(f->base + IRQ_STATUS))) {
irq = ffs(status) - 1;
handle_domain_irq(f->domain, irq, regs);
generic_handle_domain_irq(f->domain, irq);
handled = 1;
}

2
drivers/irqchip/irq-vic.c
View File

@ -208,7 +208,7 @@ static int handle_one_vic(struct vic_device *vic, struct pt_regs *regs)
while ((stat = readl_relaxed(vic->base + VIC_IRQ_STATUS))) {
irq = ffs(stat) - 1;
handle_domain_irq(vic->domain, irq, regs);
generic_handle_domain_irq(vic->domain, irq);
handled = 1;
}

2
drivers/irqchip/irq-vt8500.c
View File

@ -183,7 +183,7 @@ static void __exception_irq_entry vt8500_handle_irq(struct pt_regs *regs)
continue;
}
handle_domain_irq(intc[i].domain, irqnr, regs);
generic_handle_domain_irq(intc[i].domain, irqnr);
}
}

2
drivers/irqchip/irq-wpcm450-aic.c
View File

@ -69,7 +69,7 @@ static void __exception_irq_entry wpcm450_aic_handle_irq(struct pt_regs *regs)
/* Read IPER to signal that nIRQ can be de-asserted */
hwirq = readl(aic->regs + AIC_IPER) / 4;
handle_domain_irq(aic->domain, hwirq, regs);
generic_handle_domain_irq(aic->domain, hwirq);
}
static void wpcm450_aic_eoi(struct irq_data *d)

2
drivers/irqchip/irq-zevio.c
View File

@ -50,7 +50,7 @@ static void __exception_irq_entry zevio_handle_irq(struct pt_regs *regs)
while (readl(zevio_irq_io + IO_STATUS)) {
irqnr = readl(zevio_irq_io + IO_CURRENT);
handle_domain_irq(zevio_irq_domain, irqnr, regs);
generic_handle_domain_irq(zevio_irq_domain, irqnr);
}
}

6
include/linux/irq.h
View File

@ -524,9 +524,10 @@ struct irq_chip {
void (*irq_bus_lock)(struct irq_data *data);
void (*irq_bus_sync_unlock)(struct irq_data *data);
#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
void (*irq_cpu_online)(struct irq_data *data);
void (*irq_cpu_offline)(struct irq_data *data);
#endif
void (*irq_suspend)(struct irq_data *data);
void (*irq_resume)(struct irq_data *data);
void (*irq_pm_shutdown)(struct irq_data *data);
@ -606,8 +607,10 @@ struct irqaction;
extern int setup_percpu_irq(unsigned int irq, struct irqaction *new);
extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
extern void irq_cpu_online(void);
extern void irq_cpu_offline(void);
#endif
extern int irq_set_affinity_locked(struct irq_data *data,
const struct cpumask *cpumask, bool force);
extern int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info);
@ -1261,6 +1264,7 @@ int __init set_handle_irq(void (*handle_irq)(struct pt_regs *));
* top-level IRQ handler.
*/
extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init;
asmlinkage void generic_handle_arch_irq(struct pt_regs *regs);
#else
#ifndef set_handle_irq
#define set_handle_irq(handle_irq) \

20
include/linux/irqchip.h
View File

@ -14,8 +14,15 @@
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
/* Undefined on purpose */
extern of_irq_init_cb_t typecheck_irq_init_cb;
#define typecheck_irq_init_cb(fn) \
(__typecheck(typecheck_irq_init_cb, &fn) ? fn : fn)
/*
* This macro must be used by the different irqchip drivers to declare
* the association between their DT compatible string and their
@ -23,24 +30,27 @@
*
* @name: name that must be unique across all IRQCHIP_DECLARE of the
* same file.
* @compstr: compatible string of the irqchip driver
* @compat: compatible string of the irqchip driver
* @fn: initialization function
*/
#define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
#define IRQCHIP_DECLARE(name, compat, fn) \
OF_DECLARE_2(irqchip, name, compat, typecheck_irq_init_cb(fn))
extern int platform_irqchip_probe(struct platform_device *pdev);
#define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
static const struct of_device_id drv_name##_irqchip_match_table[] = {
#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, .data = fn },
#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, \
.data = typecheck_irq_init_cb(fn), },
#define IRQCHIP_PLATFORM_DRIVER_END(drv_name) \
{}, \
}; \
MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \
static struct platform_driver drv_name##_driver = { \
.probe = platform_irqchip_probe, \
static struct platform_driver drv_name##_driver = { \
.probe = IS_ENABLED(CONFIG_IRQCHIP) ? \
platform_irqchip_probe : NULL, \
.driver = { \
.name = #drv_name, \
.owner = THIS_MODULE, \

9
include/linux/irqdesc.h
View File

@ -168,14 +168,7 @@ int generic_handle_irq(unsigned int irq);
* conversion failed.
*/
int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq);
#ifdef CONFIG_HANDLE_DOMAIN_IRQ
int handle_domain_irq(struct irq_domain *domain,
unsigned int hwirq, struct pt_regs *regs);
int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq,
struct pt_regs *regs);
#endif
int generic_handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq);
#endif
/* Test to see if a driver has successfully requested an irq */

10
kernel/irq/Kconfig
View File

@ -97,9 +97,6 @@ config GENERIC_MSI_IRQ_DOMAIN
config IRQ_MSI_IOMMU
bool
config HANDLE_DOMAIN_IRQ
bool
config IRQ_TIMINGS
bool
@ -144,3 +141,10 @@ config GENERIC_IRQ_MULTI_HANDLER
bool
help
Allow to specify the low level IRQ handler at run time.
# Cavium Octeon is the last system to use this deprecated option
# Do not even think of enabling this on any new platform
config DEPRECATED_IRQ_CPU_ONOFFLINE
bool
depends on CAVIUM_OCTEON_SOC
default CAVIUM_OCTEON_SOC

2
kernel/irq/chip.c
View File

@ -1122,6 +1122,7 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
}
EXPORT_SYMBOL_GPL(irq_modify_status);
#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
/**
* irq_cpu_online - Invoke all irq_cpu_online functions.
*
@ -1181,6 +1182,7 @@ void irq_cpu_offline(void)
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
}
#endif
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY

3
kernel/irq/generic-chip.c
View File

@ -25,6 +25,7 @@ static DEFINE_RAW_SPINLOCK(gc_lock);
void irq_gc_noop(struct irq_data *d)
{
}
EXPORT_SYMBOL_GPL(irq_gc_noop);
/**
* irq_gc_mask_disable_reg - Mask chip via disable register
@ -44,6 +45,7 @@ void irq_gc_mask_disable_reg(struct irq_data *d)
*ct->mask_cache &= ~mask;
irq_gc_unlock(gc);
}
EXPORT_SYMBOL_GPL(irq_gc_mask_disable_reg);
/**
* irq_gc_mask_set_bit - Mask chip via setting bit in mask register
@ -103,6 +105,7 @@ void irq_gc_unmask_enable_reg(struct irq_data *d)
*ct->mask_cache |= mask;
irq_gc_unlock(gc);
}
EXPORT_SYMBOL_GPL(irq_gc_unmask_enable_reg);
/**
* irq_gc_ack_set_bit - Ack pending interrupt via setting bit

18
kernel/irq/handle.c
View File

@ -14,6 +14,8 @@
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <asm/irq_regs.h>
#include <trace/events/irq.h>
#include "internals.h"
@ -226,4 +228,20 @@ int __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
handle_arch_irq = handle_irq;
return 0;
}
/**
* generic_handle_arch_irq - root irq handler for architectures which do no
* entry accounting themselves
* @regs: Register file coming from the low-level handling code
*/
asmlinkage void noinstr generic_handle_arch_irq(struct pt_regs *regs)
{
struct pt_regs *old_regs;
irq_enter();
old_regs = set_irq_regs(regs);
handle_arch_irq(regs);
set_irq_regs(old_regs);
irq_exit();
}
#endif

81
kernel/irq/irqdesc.c
View File

@ -646,13 +646,16 @@ int handle_irq_desc(struct irq_desc *desc)
generic_handle_irq_desc(desc);
return 0;
}
EXPORT_SYMBOL_GPL(handle_irq_desc);
/**
* generic_handle_irq - Invoke the handler for a particular irq
* @irq: The irq number to handle
*
*/
* Returns: 0 on success, or -EINVAL if conversion has failed
*
* This function must be called from an IRQ context with irq regs
* initialized.
*/
int generic_handle_irq(unsigned int irq)
{
return handle_irq_desc(irq_to_desc(irq));
@ -662,89 +665,39 @@ EXPORT_SYMBOL_GPL(generic_handle_irq);
#ifdef CONFIG_IRQ_DOMAIN
/**
* generic_handle_domain_irq - Invoke the handler for a HW irq belonging
* to a domain, usually for a non-root interrupt
* controller
* to a domain.
* @domain: The domain where to perform the lookup
* @hwirq: The HW irq number to convert to a logical one
*
* Returns: 0 on success, or -EINVAL if conversion has failed
*
* This function must be called from an IRQ context with irq regs
* initialized.
*/
int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq)
{
WARN_ON_ONCE(!in_irq());
return handle_irq_desc(irq_resolve_mapping(domain, hwirq));
}
EXPORT_SYMBOL_GPL(generic_handle_domain_irq);
#ifdef CONFIG_HANDLE_DOMAIN_IRQ
/**
* handle_domain_irq - Invoke the handler for a HW irq belonging to a domain,
* usually for a root interrupt controller
* generic_handle_domain_nmi - Invoke the handler for a HW nmi belonging
* to a domain.
* @domain: The domain where to perform the lookup
* @hwirq: The HW irq number to convert to a logical one
* @regs: Register file coming from the low-level handling code
*
* Returns: 0 on success, or -EINVAL if conversion has failed
*/
int handle_domain_irq(struct irq_domain *domain,
unsigned int hwirq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
struct irq_desc *desc;
int ret = 0;
irq_enter();
/* The irqdomain code provides boundary checks */
desc = irq_resolve_mapping(domain, hwirq);
if (likely(desc))
handle_irq_desc(desc);
else
ret = -EINVAL;
irq_exit();
set_irq_regs(old_regs);
return ret;
}
/**
* handle_domain_nmi - Invoke the handler for a HW irq belonging to a domain
* @domain: The domain where to perform the lookup
* @hwirq: The HW irq number to convert to a logical one
* @regs: Register file coming from the low-level handling code
*
* This function must be called from an NMI context.
*
* Returns: 0 on success, or -EINVAL if conversion has failed
*/
int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq,
struct pt_regs *regs)
* This function must be called from an NMI context with irq regs
* initialized.
**/
int generic_handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq)
{
struct pt_regs *old_regs = set_irq_regs(regs);
struct irq_desc *desc;
int ret = 0;
/*
* NMI context needs to be setup earlier in order to deal with tracing.
*/
WARN_ON(!in_nmi());
desc = irq_resolve_mapping(domain, hwirq);
/*
* ack_bad_irq is not NMI-safe, just report
* an invalid interrupt.
*/
if (likely(desc))
handle_irq_desc(desc);
else
ret = -EINVAL;
set_irq_regs(old_regs);
return ret;
WARN_ON_ONCE(!in_nmi());
return handle_irq_desc(irq_resolve_mapping(domain, hwirq));
}
#endif
#endif
/* Dynamic interrupt handling */

6
kernel/irq/manage.c
View File

@ -1259,6 +1259,8 @@ static int irq_thread(void *data)
irqreturn_t (*handler_fn)(struct irq_desc *desc,
struct irqaction *action);
sched_set_fifo(current);
if (force_irqthreads() && test_bit(IRQTF_FORCED_THREAD,
&action->thread_flags))
handler_fn = irq_forced_thread_fn;
@ -1424,8 +1426,6 @@ setup_irq_thread(struct irqaction *new, unsigned int irq, bool secondary)
if (IS_ERR(t))
return PTR_ERR(t);
sched_set_fifo(t);
/*
* We keep the reference to the task struct even if
* the thread dies to avoid that the interrupt code
@ -2827,7 +2827,7 @@ EXPORT_SYMBOL_GPL(irq_get_irqchip_state);
* This call sets the internal irqchip state of an interrupt,
* depending on the value of @which.
*
* This function should be called with preemption disabled if the
* This function should be called with migration disabled if the
* interrupt controller has per-cpu registers.
*/
int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,

8
kernel/irq/spurious.c
View File

@ -447,6 +447,10 @@ MODULE_PARM_DESC(noirqdebug, "Disable irq lockup detection when true");
static int __init irqfixup_setup(char *str)
{
if (IS_ENABLED(CONFIG_PREEMPT_RT)) {
pr_warn("irqfixup boot option not supported with PREEMPT_RT\n");
return 1;
}
irqfixup = 1;
printk(KERN_WARNING "Misrouted IRQ fixup support enabled.\n");
printk(KERN_WARNING "This may impact system performance.\n");
@ -459,6 +463,10 @@ module_param(irqfixup, int, 0644);
static int __init irqpoll_setup(char *str)
{
if (IS_ENABLED(CONFIG_PREEMPT_RT)) {
pr_warn("irqpoll boot option not supported with PREEMPT_RT\n");
return 1;
}
irqfixup = 2;
printk(KERN_WARNING "Misrouted IRQ fixup and polling support "
"enabled\n");