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irqchip changes for 6.4 

- Large RISC-V IPI rework to make way for a new interrupt
   architecture
 
 - More Loongarch fixes from Lianmin Lv, fixing issues in the so
   called "dual-bridge" systems.
 
 - Workaround for the nvidia T241 chip that gets confused in
   3 and 4 socket configurations, leading to the GIC
   malfunctionning in some contexts
 
 - Drop support for non-firmware driven GIC configurarations
   now that the old ARM11MP Cavium board is gone
 
 - Workaround for the Rockchip 3588 chip that doesn't
   correctly deal with the shareability attributes.
 
 - Replace uses of of_find_property() with the more appropriate
   of_property_read_bool()
 
 - Make bcm-6345-l1 request its MMIO region
 
 - Add suspend support to the SiFive PLIC
 
 - Drop support for stih415, stih416 and stid127 platforms
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Merge tag 'irqchip-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip changes from Marc Zyngier:

 - Large RISC-V IPI rework to make way for a new interrupt
   architecture

 - More Loongarch fixes from Lianmin Lv, fixing issues in the so
   called "dual-bridge" systems.

 - Workaround for the nvidia T241 chip that gets confused in
   3 and 4 socket configurations, leading to the GIC
   malfunctionning in some contexts

 - Drop support for non-firmware driven GIC configurarations
   now that the old ARM11MP Cavium board is gone

 - Workaround for the Rockchip 3588 chip that doesn't
   correctly deal with the shareability attributes.

 - Replace uses of of_find_property() with the more appropriate
   of_property_read_bool()

 - Make bcm-6345-l1 request its MMIO region

 - Add suspend support to the SiFive PLIC

 - Drop support for stih415, stih416 and stid127 platforms

Link: https://lore.kernel.org/lkml/20230421132104.3021536-1-maz@kernel.org
This commit is contained in:
Thomas Gleixner 2023-04-21 17:30:57 +02:00
parent 803235982b 2ff1b0839d
commit f37202aa6e
32 changed files with 770 additions and 386 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/arm64/silicon-errata.rst
View File

@ -172,6 +172,8 @@ stable kernels.
+----------------+-----------------+-----------------+-----------------------------+
| NVIDIA | Carmel Core | N/A | NVIDIA_CARMEL_CNP_ERRATUM |
+----------------+-----------------+-----------------+-----------------------------+
| NVIDIA | T241 GICv3/4.x | T241-FABRIC-4 | N/A |
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
| Freescale/NXP | LS2080A/LS1043A | A-008585 | FSL_ERRATUM_A008585 |
+----------------+-----------------+-----------------+-----------------------------+
@ -205,6 +207,9 @@ stable kernels.
+----------------+-----------------+-----------------+-----------------------------+
| Qualcomm Tech. | Kryo4xx Gold | N/A | ARM64_ERRATUM_1286807 |
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
| Rockchip | RK3588 | #3588001 | ROCKCHIP_ERRATUM_3588001 |
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
| Fujitsu | A64FX | E#010001 | FUJITSU_ERRATUM_010001 |

10
arch/arm64/Kconfig
View File

@ -1150,6 +1150,16 @@ config NVIDIA_CARMEL_CNP_ERRATUM
If unsure, say Y.
config ROCKCHIP_ERRATUM_3588001
bool "Rockchip 3588001: GIC600 can not support shareability attributes"
default y
help
The Rockchip RK3588 GIC600 SoC integration does not support ACE/ACE-lite.
This means, that its sharability feature may not be used, even though it
is supported by the IP itself.
If unsure, say Y.
config SOCIONEXT_SYNQUACER_PREITS
bool "Socionext Synquacer: Workaround for GICv3 pre-ITS"
default y

2
arch/riscv/Kconfig
View File

@ -63,6 +63,8 @@ config RISCV
select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO
select GENERIC_IDLE_POLL_SETUP
select GENERIC_IOREMAP if MMU
select GENERIC_IRQ_IPI if SMP
select GENERIC_IRQ_IPI_MUX if SMP
select GENERIC_IRQ_MULTI_HANDLER
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_SHOW_LEVEL

4
arch/riscv/include/asm/irq.h
View File

@ -12,6 +12,10 @@
#include <asm-generic/irq.h>
void riscv_set_intc_hwnode_fn(struct fwnode_handle *(*fn)(void));
struct fwnode_handle *riscv_get_intc_hwnode(void);
extern void __init init_IRQ(void);
#endif /* _ASM_RISCV_IRQ_H */

9
arch/riscv/include/asm/sbi.h
View File

@ -271,8 +271,7 @@ long sbi_get_marchid(void);
long sbi_get_mimpid(void);
void sbi_set_timer(uint64_t stime_value);
void sbi_shutdown(void);
void sbi_clear_ipi(void);
int sbi_send_ipi(const struct cpumask *cpu_mask);
void sbi_send_ipi(unsigned int cpu);
int sbi_remote_fence_i(const struct cpumask *cpu_mask);
int sbi_remote_sfence_vma(const struct cpumask *cpu_mask,
unsigned long start,
@ -335,4 +334,10 @@ unsigned long riscv_cached_mvendorid(unsigned int cpu_id);
unsigned long riscv_cached_marchid(unsigned int cpu_id);
unsigned long riscv_cached_mimpid(unsigned int cpu_id);
#if IS_ENABLED(CONFIG_SMP) && IS_ENABLED(CONFIG_RISCV_SBI)
void sbi_ipi_init(void);
#else
static inline void sbi_ipi_init(void) { }
#endif
#endif /* _ASM_RISCV_SBI_H */

49
arch/riscv/include/asm/smp.h
View File

@ -15,12 +15,10 @@
struct seq_file;
extern unsigned long boot_cpu_hartid;
struct riscv_ipi_ops {
void (*ipi_inject)(const struct cpumask *target);
void (*ipi_clear)(void);
};
#ifdef CONFIG_SMP
#include <linux/jump_label.h>
/*
* Mapping between linux logical cpu index and hartid.
*/
@ -33,9 +31,6 @@ void show_ipi_stats(struct seq_file *p, int prec);
/* SMP initialization hook for setup_arch */
void __init setup_smp(void);
/* Called from C code, this handles an IPI. */
void handle_IPI(struct pt_regs *regs);
/* Hook for the generic smp_call_function_many() routine. */
void arch_send_call_function_ipi_mask(struct cpumask *mask);
@ -44,11 +39,22 @@ void arch_send_call_function_single_ipi(int cpu);
int riscv_hartid_to_cpuid(unsigned long hartid);
/* Set custom IPI operations */
void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops);
/* Enable IPI for CPU hotplug */
void riscv_ipi_enable(void);
/* Clear IPI for current CPU */
void riscv_clear_ipi(void);
/* Disable IPI for CPU hotplug */
void riscv_ipi_disable(void);
/* Check if IPI interrupt numbers are available */
bool riscv_ipi_have_virq_range(void);
/* Set the IPI interrupt numbers for arch (called by irqchip drivers) */
void riscv_ipi_set_virq_range(int virq, int nr, bool use_for_rfence);
/* Check if we can use IPIs for remote FENCEs */
DECLARE_STATIC_KEY_FALSE(riscv_ipi_for_rfence);
#define riscv_use_ipi_for_rfence() \
static_branch_unlikely(&riscv_ipi_for_rfence)
/* Check other CPUs stop or not */
bool smp_crash_stop_failed(void);
@ -85,14 +91,29 @@ static inline unsigned long cpuid_to_hartid_map(int cpu)
return boot_cpu_hartid;
}
static inline void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops)
static inline void riscv_ipi_enable(void)
{
}
static inline void riscv_clear_ipi(void)
static inline void riscv_ipi_disable(void)
{
}
static inline bool riscv_ipi_have_virq_range(void)
{
return false;
}
static inline void riscv_ipi_set_virq_range(int virq, int nr,
bool use_for_rfence)
{
}
static inline bool riscv_use_ipi_for_rfence(void)
{
return false;
}
#endif /* CONFIG_SMP */
#if defined(CONFIG_HOTPLUG_CPU) && (CONFIG_SMP)

1
arch/riscv/kernel/Makefile
View File

@ -74,6 +74,7 @@ obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o
obj-$(CONFIG_HAVE_PERF_REGS) += perf_regs.o
obj-$(CONFIG_RISCV_SBI) += sbi.o
ifeq ($(CONFIG_RISCV_SBI), y)
obj-$(CONFIG_SMP) += sbi-ipi.o
obj-$(CONFIG_SMP) += cpu_ops_sbi.o
endif
obj-$(CONFIG_HOTPLUG_CPU) += cpu-hotplug.o

3
arch/riscv/kernel/cpu-hotplug.c
View File

@ -13,7 +13,7 @@
#include <asm/irq.h>
#include <asm/cpu_ops.h>
#include <asm/numa.h>
#include <asm/sbi.h>
#include <asm/smp.h>
bool cpu_has_hotplug(unsigned int cpu)
{
@ -43,6 +43,7 @@ int __cpu_disable(void)
remove_cpu_topology(cpu);
numa_remove_cpu(cpu);
set_cpu_online(cpu, false);
riscv_ipi_disable();
irq_migrate_all_off_this_cpu();
return ret;

21
arch/riscv/kernel/irq.c
View File

@ -7,8 +7,26 @@
#include <linux/interrupt.h>
#include <linux/irqchip.h>
#include <linux/irqdomain.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <asm/smp.h>
#include <asm/sbi.h>
static struct fwnode_handle *(*__get_intc_node)(void);
void riscv_set_intc_hwnode_fn(struct fwnode_handle *(*fn)(void))
{
__get_intc_node = fn;
}
struct fwnode_handle *riscv_get_intc_hwnode(void)
{
if (__get_intc_node)
return __get_intc_node();
return NULL;
}
EXPORT_SYMBOL_GPL(riscv_get_intc_hwnode);
int arch_show_interrupts(struct seq_file *p, int prec)
{
@ -21,4 +39,5 @@ void __init init_IRQ(void)
irqchip_init();
if (!handle_arch_irq)
panic("No interrupt controller found.");
sbi_ipi_init();
}

77
arch/riscv/kernel/sbi-ipi.c Normal file
View File

@ -0,0 +1,77 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Multiplex several IPIs over a single HW IPI.
*
* Copyright (c) 2022 Ventana Micro Systems Inc.
*/
#define pr_fmt(fmt) "riscv: " fmt
#include <linux/cpu.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/irqdomain.h>
#include <asm/sbi.h>
static int sbi_ipi_virq;
static void sbi_ipi_handle(struct irq_desc *desc)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
chained_irq_enter(chip, desc);
csr_clear(CSR_IP, IE_SIE);
ipi_mux_process();
chained_irq_exit(chip, desc);
}
static int sbi_ipi_starting_cpu(unsigned int cpu)
{
enable_percpu_irq(sbi_ipi_virq, irq_get_trigger_type(sbi_ipi_virq));
return 0;
}
void __init sbi_ipi_init(void)
{
int virq;
struct irq_domain *domain;
if (riscv_ipi_have_virq_range())
return;
domain = irq_find_matching_fwnode(riscv_get_intc_hwnode(),
DOMAIN_BUS_ANY);
if (!domain) {
pr_err("unable to find INTC IRQ domain\n");
return;
}
sbi_ipi_virq = irq_create_mapping(domain, RV_IRQ_SOFT);
if (!sbi_ipi_virq) {
pr_err("unable to create INTC IRQ mapping\n");
return;
}
virq = ipi_mux_create(BITS_PER_BYTE, sbi_send_ipi);
if (virq <= 0) {
pr_err("unable to create muxed IPIs\n");
irq_dispose_mapping(sbi_ipi_virq);
return;
}
irq_set_chained_handler(sbi_ipi_virq, sbi_ipi_handle);
/*
* Don't disable IPI when CPU goes offline because
* the masking/unmasking of virtual IPIs is done
* via generic IPI-Mux
*/
cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
"irqchip/sbi-ipi:starting",
sbi_ipi_starting_cpu, NULL);
riscv_ipi_set_virq_range(virq, BITS_PER_BYTE, false);
pr_info("providing IPIs using SBI IPI extension\n");
}

100
arch/riscv/kernel/sbi.c
View File

@ -17,7 +17,7 @@ unsigned long sbi_spec_version __ro_after_init = SBI_SPEC_VERSION_DEFAULT;
EXPORT_SYMBOL(sbi_spec_version);
static void (*__sbi_set_timer)(uint64_t stime) __ro_after_init;
static int (*__sbi_send_ipi)(const struct cpumask *cpu_mask) __ro_after_init;
static void (*__sbi_send_ipi)(unsigned int cpu) __ro_after_init;
static int (*__sbi_rfence)(int fid, const struct cpumask *cpu_mask,
unsigned long start, unsigned long size,
unsigned long arg4, unsigned long arg5) __ro_after_init;
@ -130,17 +130,6 @@ void sbi_shutdown(void)
}
EXPORT_SYMBOL(sbi_shutdown);
/**
* sbi_clear_ipi() - Clear any pending IPIs for the calling hart.
*
* Return: None
*/
void sbi_clear_ipi(void)
{
sbi_ecall(SBI_EXT_0_1_CLEAR_IPI, 0, 0, 0, 0, 0, 0, 0);
}
EXPORT_SYMBOL(sbi_clear_ipi);
/**
* __sbi_set_timer_v01() - Program the timer for next timer event.
* @stime_value: The value after which next timer event should fire.
@ -157,17 +146,12 @@ static void __sbi_set_timer_v01(uint64_t stime_value)
#endif
}
static int __sbi_send_ipi_v01(const struct cpumask *cpu_mask)
static void __sbi_send_ipi_v01(unsigned int cpu)
{
unsigned long hart_mask;
if (!cpu_mask || cpumask_empty(cpu_mask))
cpu_mask = cpu_online_mask;
hart_mask = __sbi_v01_cpumask_to_hartmask(cpu_mask);
unsigned long hart_mask =
__sbi_v01_cpumask_to_hartmask(cpumask_of(cpu));
sbi_ecall(SBI_EXT_0_1_SEND_IPI, 0, (unsigned long)(&hart_mask),
0, 0, 0, 0, 0);
return 0;
}
static int __sbi_rfence_v01(int fid, const struct cpumask *cpu_mask,
@ -216,12 +200,10 @@ static void __sbi_set_timer_v01(uint64_t stime_value)
sbi_major_version(), sbi_minor_version());
}
static int __sbi_send_ipi_v01(const struct cpumask *cpu_mask)
static void __sbi_send_ipi_v01(unsigned int cpu)
{
pr_warn("IPI extension is not available in SBI v%lu.%lu\n",
sbi_major_version(), sbi_minor_version());
return 0;
}
static int __sbi_rfence_v01(int fid, const struct cpumask *cpu_mask,
@ -248,55 +230,18 @@ static void __sbi_set_timer_v02(uint64_t stime_value)
#endif
}
static int __sbi_send_ipi_v02(const struct cpumask *cpu_mask)
static void __sbi_send_ipi_v02(unsigned int cpu)
{
unsigned long hartid, cpuid, hmask = 0, hbase = 0, htop = 0;
struct sbiret ret = {0};
int result;
struct sbiret ret = {0};
if (!cpu_mask || cpumask_empty(cpu_mask))
cpu_mask = cpu_online_mask;
for_each_cpu(cpuid, cpu_mask) {
hartid = cpuid_to_hartid_map(cpuid);
if (hmask) {
if (hartid + BITS_PER_LONG <= htop ||
hbase + BITS_PER_LONG <= hartid) {
ret = sbi_ecall(SBI_EXT_IPI,
SBI_EXT_IPI_SEND_IPI, hmask,
hbase, 0, 0, 0, 0);
if (ret.error)
goto ecall_failed;
hmask = 0;
} else if (hartid < hbase) {
/* shift the mask to fit lower hartid */
hmask <<= hbase - hartid;
hbase = hartid;
}
}
if (!hmask) {
hbase = hartid;
htop = hartid;
} else if (hartid > htop) {
htop = hartid;
}
hmask |= BIT(hartid - hbase);
ret = sbi_ecall(SBI_EXT_IPI, SBI_EXT_IPI_SEND_IPI,
1UL, cpuid_to_hartid_map(cpu), 0, 0, 0, 0);
if (ret.error) {
result = sbi_err_map_linux_errno(ret.error);
pr_err("%s: hbase = [%lu] failed (error [%d])\n",
__func__, cpuid_to_hartid_map(cpu), result);
}
if (hmask) {
ret = sbi_ecall(SBI_EXT_IPI, SBI_EXT_IPI_SEND_IPI,
hmask, hbase, 0, 0, 0, 0);
if (ret.error)
goto ecall_failed;
}
return 0;
ecall_failed:
result = sbi_err_map_linux_errno(ret.error);
pr_err("%s: hbase = [%lu] hmask = [0x%lx] failed (error [%d])\n",
__func__, hbase, hmask, result);
return result;
}
static int __sbi_rfence_v02_call(unsigned long fid, unsigned long hmask,
@ -410,13 +355,11 @@ void sbi_set_timer(uint64_t stime_value)
/**
* sbi_send_ipi() - Send an IPI to any hart.
* @cpu_mask: A cpu mask containing all the target harts.
*
* Return: 0 on success, appropriate linux error code otherwise.
* @cpu: Logical id of the target CPU.
*/
int sbi_send_ipi(const struct cpumask *cpu_mask)
void sbi_send_ipi(unsigned int cpu)
{
return __sbi_send_ipi(cpu_mask);
__sbi_send_ipi(cpu);
}
EXPORT_SYMBOL(sbi_send_ipi);
@ -641,15 +584,6 @@ long sbi_get_mimpid(void)
}
EXPORT_SYMBOL_GPL(sbi_get_mimpid);
static void sbi_send_cpumask_ipi(const struct cpumask *target)
{
sbi_send_ipi(target);
}
static const struct riscv_ipi_ops sbi_ipi_ops = {
.ipi_inject = sbi_send_cpumask_ipi
};
void __init sbi_init(void)
{
int ret;
@ -696,6 +630,4 @@ void __init sbi_init(void)
__sbi_send_ipi = __sbi_send_ipi_v01;
__sbi_rfence = __sbi_rfence_v01;
}
riscv_set_ipi_ops(&sbi_ipi_ops);
}

187
arch/riscv/kernel/smp.c
View File

@ -13,14 +13,15 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kexec.h>
#include <linux/percpu.h>
#include <linux/profile.h>
#include <linux/smp.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/irq_work.h>
#include <asm/sbi.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
#include <asm/cpu_ops.h>
@ -44,11 +45,10 @@ void __init smp_setup_processor_id(void)
cpuid_to_hartid_map(0) = boot_cpu_hartid;
}
/* A collection of single bit ipi messages. */
static struct {
unsigned long stats[IPI_MAX] ____cacheline_aligned;
unsigned long bits ____cacheline_aligned;
} ipi_data[NR_CPUS] __cacheline_aligned;
static DEFINE_PER_CPU_READ_MOSTLY(int, ipi_dummy_dev);
static int ipi_virq_base __ro_after_init;
static int nr_ipi __ro_after_init = IPI_MAX;
static struct irq_desc *ipi_desc[IPI_MAX] __read_mostly;
int riscv_hartid_to_cpuid(unsigned long hartid)
{
@ -100,48 +100,14 @@ static inline void ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs)
}
#endif
static const struct riscv_ipi_ops *ipi_ops __ro_after_init;
void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops)
{
ipi_ops = ops;
}
EXPORT_SYMBOL_GPL(riscv_set_ipi_ops);
void riscv_clear_ipi(void)
{
if (ipi_ops && ipi_ops->ipi_clear)
ipi_ops->ipi_clear();
csr_clear(CSR_IP, IE_SIE);
}
EXPORT_SYMBOL_GPL(riscv_clear_ipi);
static void send_ipi_mask(const struct cpumask *mask, enum ipi_message_type op)
{
int cpu;
smp_mb__before_atomic();
for_each_cpu(cpu, mask)
set_bit(op, &ipi_data[cpu].bits);
smp_mb__after_atomic();
if (ipi_ops && ipi_ops->ipi_inject)
ipi_ops->ipi_inject(mask);
else
pr_warn("SMP: IPI inject method not available\n");
__ipi_send_mask(ipi_desc[op], mask);
}
static void send_ipi_single(int cpu, enum ipi_message_type op)
{
smp_mb__before_atomic();
set_bit(op, &ipi_data[cpu].bits);
smp_mb__after_atomic();
if (ipi_ops && ipi_ops->ipi_inject)
ipi_ops->ipi_inject(cpumask_of(cpu));
else
pr_warn("SMP: IPI inject method not available\n");
__ipi_send_mask(ipi_desc[op], cpumask_of(cpu));
}
#ifdef CONFIG_IRQ_WORK
@ -151,59 +117,98 @@ void arch_irq_work_raise(void)
}
#endif
void handle_IPI(struct pt_regs *regs)
static irqreturn_t handle_IPI(int irq, void *data)
{
unsigned int cpu = smp_processor_id();
unsigned long *pending_ipis = &ipi_data[cpu].bits;
unsigned long *stats = ipi_data[cpu].stats;
riscv_clear_ipi();
while (true) {
unsigned long ops;
/* Order bit clearing and data access. */
mb();
ops = xchg(pending_ipis, 0);
if (ops == 0)
return;
if (ops & (1 << IPI_RESCHEDULE)) {
stats[IPI_RESCHEDULE]++;
scheduler_ipi();
}
if (ops & (1 << IPI_CALL_FUNC)) {
stats[IPI_CALL_FUNC]++;
generic_smp_call_function_interrupt();
}
if (ops & (1 << IPI_CPU_STOP)) {
stats[IPI_CPU_STOP]++;
ipi_stop();
}
if (ops & (1 << IPI_CPU_CRASH_STOP)) {
ipi_cpu_crash_stop(cpu, get_irq_regs());
}
if (ops & (1 << IPI_IRQ_WORK)) {
stats[IPI_IRQ_WORK]++;
irq_work_run();
}
int ipi = irq - ipi_virq_base;
switch (ipi) {
case IPI_RESCHEDULE:
scheduler_ipi();
break;
case IPI_CALL_FUNC:
generic_smp_call_function_interrupt();
break;
case IPI_CPU_STOP:
ipi_stop();
break;
case IPI_CPU_CRASH_STOP:
ipi_cpu_crash_stop(smp_processor_id(), get_irq_regs());
break;
case IPI_IRQ_WORK:
irq_work_run();
break;
#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
if (ops & (1 << IPI_TIMER)) {
stats[IPI_TIMER]++;
tick_receive_broadcast();
}
case IPI_TIMER:
tick_receive_broadcast();
break;
#endif
BUG_ON((ops >> IPI_MAX) != 0);
/* Order data access and bit testing. */
mb();
default:
pr_warn("CPU%d: unhandled IPI%d\n", smp_processor_id(), ipi);
break;
}
return IRQ_HANDLED;
}
void riscv_ipi_enable(void)
{
int i;
if (WARN_ON_ONCE(!ipi_virq_base))
return;
for (i = 0; i < nr_ipi; i++)
enable_percpu_irq(ipi_virq_base + i, 0);
}
void riscv_ipi_disable(void)
{
int i;
if (WARN_ON_ONCE(!ipi_virq_base))
return;
for (i = 0; i < nr_ipi; i++)
disable_percpu_irq(ipi_virq_base + i);
}
bool riscv_ipi_have_virq_range(void)
{
return (ipi_virq_base) ? true : false;
}
DEFINE_STATIC_KEY_FALSE(riscv_ipi_for_rfence);
EXPORT_SYMBOL_GPL(riscv_ipi_for_rfence);
void riscv_ipi_set_virq_range(int virq, int nr, bool use_for_rfence)
{
int i, err;
if (WARN_ON(ipi_virq_base))
return;
WARN_ON(nr < IPI_MAX);
nr_ipi = min(nr, IPI_MAX);
ipi_virq_base = virq;
/* Request IPIs */
for (i = 0; i < nr_ipi; i++) {
err = request_percpu_irq(ipi_virq_base + i, handle_IPI,
"IPI", &ipi_dummy_dev);
WARN_ON(err);
ipi_desc[i] = irq_to_desc(ipi_virq_base + i);
irq_set_status_flags(ipi_virq_base + i, IRQ_HIDDEN);
}
/* Enabled IPIs for boot CPU immediately */
riscv_ipi_enable();
/* Update RFENCE static key */
if (use_for_rfence)
static_branch_enable(&riscv_ipi_for_rfence);
else
static_branch_disable(&riscv_ipi_for_rfence);
}
static const char * const ipi_names[] = {
@ -223,7 +228,7 @@ void show_ipi_stats(struct seq_file *p, int prec)
seq_printf(p, "%*s%u:%s", prec - 1, "IPI", i,
prec >= 4 ? " " : "");
for_each_online_cpu(cpu)
seq_printf(p, "%10lu ", ipi_data[cpu].stats[i]);
seq_printf(p, "%10u ", irq_desc_kstat_cpu(ipi_desc[i], cpu));
seq_printf(p, " %s\n", ipi_names[i]);
}
}

5
arch/riscv/kernel/smpboot.c
View File

@ -30,7 +30,6 @@
#include <asm/numa.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
#include <asm/sbi.h>
#include <asm/smp.h>
#include "head.h"
@ -158,12 +157,12 @@ asmlinkage __visible void smp_callin(void)
struct mm_struct *mm = &init_mm;
unsigned int curr_cpuid = smp_processor_id();
riscv_clear_ipi();
/* All kernel threads share the same mm context. */
mmgrab(mm);
current->active_mm = mm;
riscv_ipi_enable();
store_cpu_topology(curr_cpuid);
notify_cpu_starting(curr_cpuid);
numa_add_cpu(curr_cpuid);

5
arch/riscv/mm/cacheflush.c
View File

@ -19,7 +19,7 @@ void flush_icache_all(void)
{
local_flush_icache_all();
if (IS_ENABLED(CONFIG_RISCV_SBI))
if (IS_ENABLED(CONFIG_RISCV_SBI) && !riscv_use_ipi_for_rfence())
sbi_remote_fence_i(NULL);
else
on_each_cpu(ipi_remote_fence_i, NULL, 1);
@ -67,7 +67,8 @@ void flush_icache_mm(struct mm_struct *mm, bool local)
* with flush_icache_deferred().
*/
smp_mb();
} else if (IS_ENABLED(CONFIG_RISCV_SBI)) {
} else if (IS_ENABLED(CONFIG_RISCV_SBI) &&
!riscv_use_ipi_for_rfence()) {
sbi_remote_fence_i(&others);
} else {
on_each_cpu_mask(&others, ipi_remote_fence_i, NULL, 1);

95
arch/riscv/mm/tlbflush.c
View File

@ -23,14 +23,62 @@ static inline void local_flush_tlb_page_asid(unsigned long addr,
: "memory");
}
void flush_tlb_all(void)
static inline void local_flush_tlb_range(unsigned long start,
unsigned long size, unsigned long stride)
{
sbi_remote_sfence_vma(NULL, 0, -1);
if (size <= stride)
local_flush_tlb_page(start);
else
local_flush_tlb_all();
}
static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start,
unsigned long size, unsigned long stride)
static inline void local_flush_tlb_range_asid(unsigned long start,
unsigned long size, unsigned long stride, unsigned long asid)
{
if (size <= stride)
local_flush_tlb_page_asid(start, asid);
else
local_flush_tlb_all_asid(asid);
}
static void __ipi_flush_tlb_all(void *info)
{
local_flush_tlb_all();
}
void flush_tlb_all(void)
{
if (riscv_use_ipi_for_rfence())
on_each_cpu(__ipi_flush_tlb_all, NULL, 1);
else
sbi_remote_sfence_vma(NULL, 0, -1);
}
struct flush_tlb_range_data {
unsigned long asid;
unsigned long start;
unsigned long size;
unsigned long stride;
};
static void __ipi_flush_tlb_range_asid(void *info)
{
struct flush_tlb_range_data *d = info;
local_flush_tlb_range_asid(d->start, d->size, d->stride, d->asid);
}
static void __ipi_flush_tlb_range(void *info)
{
struct flush_tlb_range_data *d = info;
local_flush_tlb_range(d->start, d->size, d->stride);
}
static void __flush_tlb_range(struct mm_struct *mm, unsigned long start,
unsigned long size, unsigned long stride)
{
struct flush_tlb_range_data ftd;
struct cpumask *cmask = mm_cpumask(mm);
unsigned int cpuid;
bool broadcast;
@ -45,19 +93,34 @@ static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start,
unsigned long asid = atomic_long_read(&mm->context.id) & asid_mask;
if (broadcast) {
sbi_remote_sfence_vma_asid(cmask, start, size, asid);
} else if (size <= stride) {
local_flush_tlb_page_asid(start, asid);
if (riscv_use_ipi_for_rfence()) {
ftd.asid = asid;
ftd.start = start;
ftd.size = size;
ftd.stride = stride;
on_each_cpu_mask(cmask,
__ipi_flush_tlb_range_asid,
&ftd, 1);
} else
sbi_remote_sfence_vma_asid(cmask,
start, size, asid);
} else {
local_flush_tlb_all_asid(asid);
local_flush_tlb_range_asid(start, size, stride, asid);
}
} else {
if (broadcast) {
sbi_remote_sfence_vma(cmask, start, size);
} else if (size <= stride) {
local_flush_tlb_page(start);
if (riscv_use_ipi_for_rfence()) {
ftd.asid = 0;
ftd.start = start;
ftd.size = size;
ftd.stride = stride;
on_each_cpu_mask(cmask,
__ipi_flush_tlb_range,
&ftd, 1);
} else
sbi_remote_sfence_vma(cmask, start, size);
} else {
local_flush_tlb_all();
local_flush_tlb_range(start, size, stride);
}
}
@ -66,23 +129,23 @@ static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start,
void flush_tlb_mm(struct mm_struct *mm)
{
__sbi_tlb_flush_range(mm, 0, -1, PAGE_SIZE);
__flush_tlb_range(mm, 0, -1, PAGE_SIZE);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
{
__sbi_tlb_flush_range(vma->vm_mm, addr, PAGE_SIZE, PAGE_SIZE);
__flush_tlb_range(vma->vm_mm, addr, PAGE_SIZE, PAGE_SIZE);
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(vma->vm_mm, start, end - start, PAGE_SIZE);
__flush_tlb_range(vma->vm_mm, start, end - start, PAGE_SIZE);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(vma->vm_mm, start, end - start, PMD_SIZE);
__flush_tlb_range(vma->vm_mm, start, end - start, PMD_SIZE);
}
#endif

65
drivers/clocksource/timer-clint.c
View File

@ -17,6 +17,9 @@
#include <linux/sched_clock.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/irqdomain.h>
#include <linux/of_irq.h>
#include <linux/smp.h>
#include <linux/timex.h>
@ -31,6 +34,7 @@
/* CLINT manages IPI and Timer for RISC-V M-mode */
static u32 __iomem *clint_ipi_base;
static unsigned int clint_ipi_irq;
static u64 __iomem *clint_timer_cmp;
static u64 __iomem *clint_timer_val;
static unsigned long clint_timer_freq;
@ -41,12 +45,10 @@ u64 __iomem *clint_time_val;
EXPORT_SYMBOL(clint_time_val);
#endif
static void clint_send_ipi(const struct cpumask *target)
#ifdef CONFIG_SMP
static void clint_send_ipi(unsigned int cpu)
{
unsigned int cpu;
for_each_cpu(cpu, target)
writel(1, clint_ipi_base + cpuid_to_hartid_map(cpu));
writel(1, clint_ipi_base + cpuid_to_hartid_map(cpu));
}
static void clint_clear_ipi(void)
@ -54,10 +56,18 @@ static void clint_clear_ipi(void)
writel(0, clint_ipi_base + cpuid_to_hartid_map(smp_processor_id()));
}
static struct riscv_ipi_ops clint_ipi_ops = {
.ipi_inject = clint_send_ipi,
.ipi_clear = clint_clear_ipi,
};
static void clint_ipi_interrupt(struct irq_desc *desc)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
chained_irq_enter(chip, desc);
clint_clear_ipi();
ipi_mux_process();
chained_irq_exit(chip, desc);
}
#endif
#ifdef CONFIG_64BIT
#define clint_get_cycles() readq_relaxed(clint_timer_val)
@ -125,12 +135,19 @@ static int clint_timer_starting_cpu(unsigned int cpu)
enable_percpu_irq(clint_timer_irq,
irq_get_trigger_type(clint_timer_irq));
enable_percpu_irq(clint_ipi_irq,
irq_get_trigger_type(clint_ipi_irq));
return 0;
}
static int clint_timer_dying_cpu(unsigned int cpu)
{
disable_percpu_irq(clint_timer_irq);
/*
* Don't disable IPI when CPU goes offline because
* the masking/unmasking of virtual IPIs is done
* via generic IPI-Mux
*/
return 0;
}
@ -170,6 +187,12 @@ static int __init clint_timer_init_dt(struct device_node *np)
return -ENODEV;
}
/* Find parent irq domain and map ipi irq */
if (!clint_ipi_irq &&
oirq.args[0] == RV_IRQ_SOFT &&
irq_find_host(oirq.np))
clint_ipi_irq = irq_of_parse_and_map(np, i);
/* Find parent irq domain and map timer irq */
if (!clint_timer_irq &&
oirq.args[0] == RV_IRQ_TIMER &&
@ -177,9 +200,9 @@ static int __init clint_timer_init_dt(struct device_node *np)
clint_timer_irq = irq_of_parse_and_map(np, i);
}
/* If CLINT timer irq not found then fail */
if (!clint_timer_irq) {
pr_err("%pOFP: timer irq not found\n", np);
/* If CLINT ipi or timer irq not found then fail */
if (!clint_ipi_irq || !clint_timer_irq) {
pr_err("%pOFP: ipi/timer irq not found\n", np);
return -ENODEV;
}
@ -219,6 +242,19 @@ static int __init clint_timer_init_dt(struct device_node *np)
goto fail_iounmap;
}
#ifdef CONFIG_SMP
rc = ipi_mux_create(BITS_PER_BYTE, clint_send_ipi);
if (rc <= 0) {
pr_err("unable to create muxed IPIs\n");
rc = (rc < 0) ? rc : -ENODEV;
goto fail_free_irq;
}
irq_set_chained_handler(clint_ipi_irq, clint_ipi_interrupt);
riscv_ipi_set_virq_range(rc, BITS_PER_BYTE, true);
clint_clear_ipi();
#endif
rc = cpuhp_setup_state(CPUHP_AP_CLINT_TIMER_STARTING,
"clockevents/clint/timer:starting",
clint_timer_starting_cpu,
@ -228,13 +264,10 @@ static int __init clint_timer_init_dt(struct device_node *np)
goto fail_free_irq;
}
riscv_set_ipi_ops(&clint_ipi_ops);
clint_clear_ipi();
return 0;
fail_free_irq:
free_irq(clint_timer_irq, &clint_clock_event);
free_percpu_irq(clint_timer_irq, &clint_clock_event);
fail_iounmap:
iounmap(base);
return rc;

26
drivers/firmware/smccc/smccc.c
View File

@ -17,9 +17,13 @@ static enum arm_smccc_conduit smccc_conduit = SMCCC_CONDUIT_NONE;
bool __ro_after_init smccc_trng_available = false;
u64 __ro_after_init smccc_has_sve_hint = false;
s32 __ro_after_init smccc_soc_id_version = SMCCC_RET_NOT_SUPPORTED;
s32 __ro_after_init smccc_soc_id_revision = SMCCC_RET_NOT_SUPPORTED;
void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit)
{
struct arm_smccc_res res;
smccc_version = version;
smccc_conduit = conduit;
@ -27,6 +31,18 @@ void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit)
if (IS_ENABLED(CONFIG_ARM64_SVE) &&
smccc_version >= ARM_SMCCC_VERSION_1_3)
smccc_has_sve_hint = true;
if ((smccc_version >= ARM_SMCCC_VERSION_1_2) &&
(smccc_conduit != SMCCC_CONDUIT_NONE)) {
arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
ARM_SMCCC_ARCH_SOC_ID, &res);
if ((s32)res.a0 >= 0) {
arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 0, &res);
smccc_soc_id_version = (s32)res.a0;
arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 1, &res);
smccc_soc_id_revision = (s32)res.a0;
}
}
}
enum arm_smccc_conduit arm_smccc_1_1_get_conduit(void)
@ -44,6 +60,16 @@ u32 arm_smccc_get_version(void)
}
EXPORT_SYMBOL_GPL(arm_smccc_get_version);
s32 arm_smccc_get_soc_id_version(void)
{
return smccc_soc_id_version;
}
s32 arm_smccc_get_soc_id_revision(void)
{
return smccc_soc_id_revision;
}
static int __init smccc_devices_init(void)
{
struct platform_device *pdev;

28
drivers/firmware/smccc/soc_id.c
View File

@ -42,41 +42,23 @@ static int __init smccc_soc_init(void)
if (arm_smccc_get_version() < ARM_SMCCC_VERSION_1_2)
return 0;
if (arm_smccc_1_1_get_conduit() == SMCCC_CONDUIT_NONE) {
pr_err("%s: invalid SMCCC conduit\n", __func__);
return -EOPNOTSUPP;
}
arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
ARM_SMCCC_ARCH_SOC_ID, &res);
if ((int)res.a0 == SMCCC_RET_NOT_SUPPORTED) {
soc_id_version = arm_smccc_get_soc_id_version();
if (soc_id_version == SMCCC_RET_NOT_SUPPORTED) {
pr_info("ARCH_SOC_ID not implemented, skipping ....\n");
return 0;
}
if ((int)res.a0 < 0) {
pr_info("ARCH_FEATURES(ARCH_SOC_ID) returned error: %lx\n",
res.a0);
return -EINVAL;
}
arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 0, &res);
if ((int)res.a0 < 0) {
if (soc_id_version < 0) {
pr_err("ARCH_SOC_ID(0) returned error: %lx\n", res.a0);
return -EINVAL;
}
soc_id_version = res.a0;
arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 1, &res);
if ((int)res.a0 < 0) {
soc_id_rev = arm_smccc_get_soc_id_revision();
if (soc_id_rev < 0) {
pr_err("ARCH_SOC_ID(1) returned error: %lx\n", res.a0);
return -EINVAL;
}
soc_id_rev = res.a0;
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;

3
drivers/irqchip/Kconfig
View File

@ -7,6 +7,7 @@ config IRQCHIP
config ARM_GIC
bool
depends on OF
select IRQ_DOMAIN_HIERARCHY
select GENERIC_IRQ_EFFECTIVE_AFF_MASK if SMP
@ -35,6 +36,7 @@ config ARM_GIC_V3
select IRQ_DOMAIN_HIERARCHY
select PARTITION_PERCPU
select GENERIC_IRQ_EFFECTIVE_AFF_MASK if SMP
select HAVE_ARM_SMCCC_DISCOVERY
config ARM_GIC_V3_ITS
bool
@ -535,6 +537,7 @@ config TI_PRUSS_INTC
config RISCV_INTC
bool
depends on RISCV
select IRQ_DOMAIN_HIERARCHY
config SIFIVE_PLIC
bool

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

@ -257,6 +257,9 @@ static int __init bcm6345_l1_init_one(struct device_node *dn,
if (!cpu->map_base)
return -ENOMEM;
if (!request_mem_region(res.start, sz, res.name))
pr_err("failed to request intc memory");
for (i = 0; i < n_words; i++) {
cpu->enable_cache[i] = 0;
__raw_writel(0, cpu->map_base + reg_enable(intc, i));
@ -335,8 +338,7 @@ static int __init bcm6345_l1_of_init(struct device_node *dn,
for_each_cpu(idx, &intc->cpumask) {
struct bcm6345_l1_cpu *cpu = intc->cpus[idx];
pr_info(" CPU%u at MMIO 0x%p (irq = %d)\n", idx,
cpu->map_base, cpu->parent_irq);
pr_info(" CPU%u (irq = %d)\n", idx, cpu->parent_irq);
}
return 0;

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

@ -68,7 +68,7 @@ static void __init ck_set_gc(struct device_node *node, void __iomem *reg_base,
gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit;
gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit;
if (of_find_property(node, "csky,support-pulse-signal", NULL))
if (of_property_read_bool(node, "csky,support-pulse-signal"))
gc->chip_types[0].chip.irq_unmask = irq_ck_mask_set_bit;
}

2
drivers/irqchip/irq-gic-v2m.c
View File

@ -421,7 +421,7 @@ static int __init gicv2m_of_init(struct fwnode_handle *parent_handle,
u32 spi_start = 0, nr_spis = 0;
struct resource res;
if (!of_find_property(child, "msi-controller", NULL))
if (!of_property_read_bool(child, "msi-controller"))
continue;
ret = of_address_to_resource(child, 0, &res);

35
drivers/irqchip/irq-gic-v3-its.c
View File

@ -42,9 +42,11 @@
#define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0)
#define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1)
#define ITS_FLAGS_WORKAROUND_CAVIUM_23144 (1ULL << 2)
#define ITS_FLAGS_FORCE_NON_SHAREABLE (1ULL << 3)
#define RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING (1 << 0)
#define RDIST_FLAGS_RD_TABLES_PREALLOCATED (1 << 1)
#define RDIST_FLAGS_FORCE_NON_SHAREABLE (1 << 2)
#define RD_LOCAL_LPI_ENABLED BIT(0)
#define RD_LOCAL_PENDTABLE_PREALLOCATED BIT(1)
@ -2359,6 +2361,9 @@ retry_baser:
its_write_baser(its, baser, val);
tmp = baser->val;
if (its->flags & ITS_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GITS_BASER_SHAREABILITY_MASK;
if ((val ^ tmp) & GITS_BASER_SHAREABILITY_MASK) {
/*
* Shareability didn't stick. Just use
@ -3096,6 +3101,9 @@ static void its_cpu_init_lpis(void)
gicr_write_propbaser(val, rbase + GICR_PROPBASER);
tmp = gicr_read_propbaser(rbase + GICR_PROPBASER);
if (gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GICR_PROPBASER_SHAREABILITY_MASK;
if ((tmp ^ val) & GICR_PROPBASER_SHAREABILITY_MASK) {
if (!(tmp & GICR_PROPBASER_SHAREABILITY_MASK)) {
/*
@ -3120,6 +3128,9 @@ static void its_cpu_init_lpis(void)
gicr_write_pendbaser(val, rbase + GICR_PENDBASER);
tmp = gicr_read_pendbaser(rbase + GICR_PENDBASER);
if (gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GICR_PENDBASER_SHAREABILITY_MASK;
if (!(tmp & GICR_PENDBASER_SHAREABILITY_MASK)) {
/*
* The HW reports non-shareable, we must remove the
@ -4710,6 +4721,19 @@ static bool __maybe_unused its_enable_quirk_hip07_161600802(void *data)
return true;
}
static bool __maybe_unused its_enable_rk3588001(void *data)
{
struct its_node *its = data;
if (!of_machine_is_compatible("rockchip,rk3588"))
return false;
its->flags |= ITS_FLAGS_FORCE_NON_SHAREABLE;
gic_rdists->flags |= RDIST_FLAGS_FORCE_NON_SHAREABLE;
return true;
}
static const struct gic_quirk its_quirks[] = {
#ifdef CONFIG_CAVIUM_ERRATUM_22375
{
@ -4755,6 +4779,14 @@ static const struct gic_quirk its_quirks[] = {
.mask = 0xffffffff,
.init = its_enable_quirk_hip07_161600802,
},
#endif
#ifdef CONFIG_ROCKCHIP_ERRATUM_3588001
{
.desc = "ITS: Rockchip erratum RK3588001",
.iidr = 0x0201743b,
.mask = 0xffffffff,
.init = its_enable_rk3588001,
},
#endif
{
}
@ -5096,6 +5128,9 @@ static int __init its_probe_one(struct resource *res,
gits_write_cbaser(baser, its->base + GITS_CBASER);
tmp = gits_read_cbaser(its->base + GITS_CBASER);
if (its->flags & ITS_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GITS_CBASER_SHAREABILITY_MASK;
if ((tmp ^ baser) & GITS_CBASER_SHAREABILITY_MASK) {
if (!(tmp & GITS_CBASER_SHAREABILITY_MASK)) {
/*

115
drivers/irqchip/irq-gic-v3.c
View File

@ -24,6 +24,9 @@
#include <linux/irqchip/arm-gic-common.h>
#include <linux/irqchip/arm-gic-v3.h>
#include <linux/irqchip/irq-partition-percpu.h>
#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/arm-smccc.h>
#include <asm/cputype.h>
#include <asm/exception.h>
@ -47,6 +50,7 @@ struct redist_region {
struct gic_chip_data {
struct fwnode_handle *fwnode;
phys_addr_t dist_phys_base;
void __iomem *dist_base;
struct redist_region *redist_regions;
struct rdists rdists;
@ -59,6 +63,10 @@ struct gic_chip_data {
struct partition_desc **ppi_descs;
};
#define T241_CHIPS_MAX 4
static void __iomem *t241_dist_base_alias[T241_CHIPS_MAX] __read_mostly;
static DEFINE_STATIC_KEY_FALSE(gic_nvidia_t241_erratum);
static struct gic_chip_data gic_data __read_mostly;
static DEFINE_STATIC_KEY_TRUE(supports_deactivate_key);
@ -179,6 +187,39 @@ static inline bool gic_irq_in_rdist(struct irq_data *d)
}
}
static inline void __iomem *gic_dist_base_alias(struct irq_data *d)
{
if (static_branch_unlikely(&gic_nvidia_t241_erratum)) {
irq_hw_number_t hwirq = irqd_to_hwirq(d);
u32 chip;
/*
* For the erratum T241-FABRIC-4, read accesses to GICD_In{E}
* registers are directed to the chip that owns the SPI. The
* the alias region can also be used for writes to the
* GICD_In{E} except GICD_ICENABLERn. Each chip has support
* for 320 {E}SPIs. Mappings for all 4 chips:
* Chip0 = 32-351
* Chip1 = 352-671
* Chip2 = 672-991
* Chip3 = 4096-4415
*/
switch (__get_intid_range(hwirq)) {
case SPI_RANGE:
chip = (hwirq - 32) / 320;
break;
case ESPI_RANGE:
chip = 3;
break;
default:
unreachable();
}
return t241_dist_base_alias[chip];
}
return gic_data.dist_base;
}
static inline void __iomem *gic_dist_base(struct irq_data *d)
{
switch (get_intid_range(d)) {
@ -337,7 +378,7 @@ static int gic_peek_irq(struct irq_data *d, u32 offset)
if (gic_irq_in_rdist(d))
base = gic_data_rdist_sgi_base();
else
base = gic_data.dist_base;
base = gic_dist_base_alias(d);
return !!(readl_relaxed(base + offset + (index / 32) * 4) & mask);
}
@ -588,7 +629,7 @@ static int gic_set_type(struct irq_data *d, unsigned int type)
if (gic_irq_in_rdist(d))
base = gic_data_rdist_sgi_base();
else
base = gic_data.dist_base;
base = gic_dist_base_alias(d);
offset = convert_offset_index(d, GICD_ICFGR, &index);
@ -1708,6 +1749,43 @@ static bool gic_enable_quirk_hip06_07(void *data)
return false;
}
#define T241_CHIPN_MASK GENMASK_ULL(45, 44)
#define T241_CHIP_GICDA_OFFSET 0x1580000
#define SMCCC_SOC_ID_T241 0x036b0241
static bool gic_enable_quirk_nvidia_t241(void *data)
{
s32 soc_id = arm_smccc_get_soc_id_version();
unsigned long chip_bmask = 0;
phys_addr_t phys;
u32 i;
/* Check JEP106 code for NVIDIA T241 chip (036b:0241) */
if ((soc_id < 0) || (soc_id != SMCCC_SOC_ID_T241))
return false;
/* Find the chips based on GICR regions PHYS addr */
for (i = 0; i < gic_data.nr_redist_regions; i++) {
chip_bmask |= BIT(FIELD_GET(T241_CHIPN_MASK,
(u64)gic_data.redist_regions[i].phys_base));
}
if (hweight32(chip_bmask) < 3)
return false;
/* Setup GICD alias regions */
for (i = 0; i < ARRAY_SIZE(t241_dist_base_alias); i++) {
if (chip_bmask & BIT(i)) {
phys = gic_data.dist_phys_base + T241_CHIP_GICDA_OFFSET;
phys |= FIELD_PREP(T241_CHIPN_MASK, i);
t241_dist_base_alias[i] = ioremap(phys, SZ_64K);
WARN_ON_ONCE(!t241_dist_base_alias[i]);
}
}
static_branch_enable(&gic_nvidia_t241_erratum);
return true;
}
static const struct gic_quirk gic_quirks[] = {
{
.desc = "GICv3: Qualcomm MSM8996 broken firmware",
@ -1739,6 +1817,12 @@ static const struct gic_quirk gic_quirks[] = {
.mask = 0xe8f00fff,
.init = gic_enable_quirk_cavium_38539,
},
{
.desc = "GICv3: NVIDIA erratum T241-FABRIC-4",
.iidr = 0x0402043b,
.mask = 0xffffffff,
.init = gic_enable_quirk_nvidia_t241,
},
{
}
};
@ -1798,7 +1882,8 @@ static void gic_enable_nmi_support(void)
gic_chip.flags |= IRQCHIP_SUPPORTS_NMI;
}
static int __init gic_init_bases(void __iomem *dist_base,
static int __init gic_init_bases(phys_addr_t dist_phys_base,
void __iomem *dist_base,
struct redist_region *rdist_regs,
u32 nr_redist_regions,
u64 redist_stride,
@ -1814,6 +1899,7 @@ static int __init gic_init_bases(void __iomem *dist_base,
pr_info("GIC: Using split EOI/Deactivate mode\n");
gic_data.fwnode = handle;
gic_data.dist_phys_base = dist_phys_base;
gic_data.dist_base = dist_base;
gic_data.redist_regions = rdist_regs;
gic_data.nr_redist_regions = nr_redist_regions;
@ -1841,10 +1927,13 @@ static int __init gic_init_bases(void __iomem *dist_base,
gic_data.domain = irq_domain_create_tree(handle, &gic_irq_domain_ops,
&gic_data);
gic_data.rdists.rdist = alloc_percpu(typeof(*gic_data.rdists.rdist));
gic_data.rdists.has_rvpeid = true;
gic_data.rdists.has_vlpis = true;
gic_data.rdists.has_direct_lpi = true;
gic_data.rdists.has_vpend_valid_dirty = true;
if (!static_branch_unlikely(&gic_nvidia_t241_erratum)) {
/* Disable GICv4.x features for the erratum T241-FABRIC-4 */
gic_data.rdists.has_rvpeid = true;
gic_data.rdists.has_vlpis = true;
gic_data.rdists.has_direct_lpi = true;
gic_data.rdists.has_vpend_valid_dirty = true;
}
if (WARN_ON(!gic_data.domain) || WARN_ON(!gic_data.rdists.rdist)) {
err = -ENOMEM;
@ -2050,6 +2139,7 @@ static void __iomem *gic_of_iomap(struct device_node *node, int idx,
static int __init gic_of_init(struct device_node *node, struct device_node *parent)
{
phys_addr_t dist_phys_base;
void __iomem *dist_base;
struct redist_region *rdist_regs;
struct resource res;
@ -2063,6 +2153,8 @@ static int __init gic_of_init(struct device_node *node, struct device_node *pare
return PTR_ERR(dist_base);
}
dist_phys_base = res.start;
err = gic_validate_dist_version(dist_base);
if (err) {
pr_err("%pOF: no distributor detected, giving up\n", node);
@ -2094,8 +2186,8 @@ static int __init gic_of_init(struct device_node *node, struct device_node *pare
gic_enable_of_quirks(node, gic_quirks, &gic_data);
err = gic_init_bases(dist_base, rdist_regs, nr_redist_regions,
redist_stride, &node->fwnode);
err = gic_init_bases(dist_phys_base, dist_base, rdist_regs,
nr_redist_regions, redist_stride, &node->fwnode);
if (err)
goto out_unmap_rdist;
@ -2411,8 +2503,9 @@ gic_acpi_init(union acpi_subtable_headers *header, const unsigned long end)
goto out_redist_unmap;
}
err = gic_init_bases(acpi_data.dist_base, acpi_data.redist_regs,
acpi_data.nr_redist_regions, 0, gsi_domain_handle);
err = gic_init_bases(dist->base_address, acpi_data.dist_base,
acpi_data.redist_regs, acpi_data.nr_redist_regions,
0, gsi_domain_handle);
if (err)
goto out_fwhandle_free;

60
drivers/irqchip/irq-gic.c
View File

@ -1081,10 +1081,6 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq,
return 0;
}
static void gic_irq_domain_unmap(struct irq_domain *d, unsigned int irq)
{
}
static int gic_irq_domain_translate(struct irq_domain *d,
struct irq_fwspec *fwspec,
unsigned long *hwirq,
@ -1167,11 +1163,6 @@ static const struct irq_domain_ops gic_irq_domain_hierarchy_ops = {
.free = irq_domain_free_irqs_top,
};
static const struct irq_domain_ops gic_irq_domain_ops = {
.map = gic_irq_domain_map,
.unmap = gic_irq_domain_unmap,
};
static int gic_init_bases(struct gic_chip_data *gic,
struct fwnode_handle *handle)
{
@ -1219,30 +1210,9 @@ static int gic_init_bases(struct gic_chip_data *gic,
gic_irqs = 1020;
gic->gic_irqs = gic_irqs;
if (handle) { /* DT/ACPI */
gic->domain = irq_domain_create_linear(handle, gic_irqs,
&gic_irq_domain_hierarchy_ops,
gic);
} else { /* Legacy support */
/*
* For primary GICs, skip over SGIs.
* No secondary GIC support whatsoever.
*/
int irq_base;
gic_irqs -= 16; /* calculate # of irqs to allocate */
irq_base = irq_alloc_descs(16, 16, gic_irqs,
numa_node_id());
if (irq_base < 0) {
WARN(1, "Cannot allocate irq_descs @ IRQ16, assuming pre-allocated\n");
irq_base = 16;
}
gic->domain = irq_domain_add_legacy(NULL, gic_irqs, irq_base,
16, &gic_irq_domain_ops, gic);
}
gic->domain = irq_domain_create_linear(handle, gic_irqs,
&gic_irq_domain_hierarchy_ops,
gic);
if (WARN_ON(!gic->domain)) {
ret = -ENODEV;
goto error;
@ -1297,23 +1267,6 @@ static int __init __gic_init_bases(struct gic_chip_data *gic,
return ret;
}
void __init gic_init(void __iomem *dist_base, void __iomem *cpu_base)
{
struct gic_chip_data *gic;
/*
* Non-DT/ACPI systems won't run a hypervisor, so let's not
* bother with these...
*/
static_branch_disable(&supports_deactivate_key);
gic = &gic_data[0];
gic->raw_dist_base = dist_base;
gic->raw_cpu_base = cpu_base;
__gic_init_bases(gic, NULL);
}
static void gic_teardown(struct gic_chip_data *gic)
{
if (WARN_ON(!gic))
@ -1325,7 +1278,6 @@ static void gic_teardown(struct gic_chip_data *gic)
iounmap(gic->raw_cpu_base);
}
#ifdef CONFIG_OF
static int gic_cnt __initdata;
static bool gicv2_force_probe;
@ -1570,12 +1522,6 @@ IRQCHIP_DECLARE(cortex_a7_gic, "arm,cortex-a7-gic", gic_of_init);
IRQCHIP_DECLARE(msm_8660_qgic, "qcom,msm-8660-qgic", gic_of_init);
IRQCHIP_DECLARE(msm_qgic2, "qcom,msm-qgic2", gic_of_init);
IRQCHIP_DECLARE(pl390, "arm,pl390", gic_of_init);
#else
int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq)
{
return -ENOTSUPP;
}
#endif
#ifdef CONFIG_ACPI
static struct

32
drivers/irqchip/irq-loongson-eiointc.c
View File

@ -280,9 +280,6 @@ static void acpi_set_vec_parent(int node, struct irq_domain *parent, struct acpi
{
int i;
if (cpu_has_flatmode)
node = cpu_to_node(node * CORES_PER_EIO_NODE);
for (i = 0; i < MAX_IO_PICS; i++) {
if (node == vec_group[i].node) {
vec_group[i].parent = parent;
@ -343,19 +340,27 @@ static int __init pch_pic_parse_madt(union acpi_subtable_headers *header,
if (parent)
return pch_pic_acpi_init(parent, pchpic_entry);
return -EINVAL;
return 0;
}
static int __init pch_msi_parse_madt(union acpi_subtable_headers *header,
const unsigned long end)
{
struct irq_domain *parent;
struct acpi_madt_msi_pic *pchmsi_entry = (struct acpi_madt_msi_pic *)header;
struct irq_domain *parent = acpi_get_vec_parent(eiointc_priv[nr_pics - 1]->node, msi_group);
int node;
if (cpu_has_flatmode)
node = cpu_to_node(eiointc_priv[nr_pics - 1]->node * CORES_PER_EIO_NODE);
else
node = eiointc_priv[nr_pics - 1]->node;
parent = acpi_get_vec_parent(node, msi_group);
if (parent)
return pch_msi_acpi_init(parent, pchmsi_entry);
return -EINVAL;
return 0;
}
static int __init acpi_cascade_irqdomain_init(void)
@ -379,6 +384,7 @@ int __init eiointc_acpi_init(struct irq_domain *parent,
int i, ret, parent_irq;
unsigned long node_map;
struct eiointc_priv *priv;
int node;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
@ -416,13 +422,19 @@ int __init eiointc_acpi_init(struct irq_domain *parent,
parent_irq = irq_create_mapping(parent, acpi_eiointc->cascade);
irq_set_chained_handler_and_data(parent_irq, eiointc_irq_dispatch, priv);
register_syscore_ops(&eiointc_syscore_ops);
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_LOONGARCH_STARTING,
if (nr_pics == 1) {
register_syscore_ops(&eiointc_syscore_ops);
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_LOONGARCH_STARTING,
"irqchip/loongarch/intc:starting",
eiointc_router_init, NULL);
}
acpi_set_vec_parent(acpi_eiointc->node, priv->eiointc_domain, pch_group);
acpi_set_vec_parent(acpi_eiointc->node, priv->eiointc_domain, msi_group);
if (cpu_has_flatmode)
node = cpu_to_node(acpi_eiointc->node * CORES_PER_EIO_NODE);
else
node = acpi_eiointc->node;
acpi_set_vec_parent(node, priv->eiointc_domain, pch_group);
acpi_set_vec_parent(node, priv->eiointc_domain, msi_group);
ret = acpi_cascade_irqdomain_init();
return ret;

6
drivers/irqchip/irq-loongson-pch-pic.c
View File

@ -311,7 +311,8 @@ static int pch_pic_init(phys_addr_t addr, unsigned long size, int vec_base,
pch_pic_handle[nr_pics] = domain_handle;
pch_pic_priv[nr_pics++] = priv;
register_syscore_ops(&pch_pic_syscore_ops);
if (nr_pics == 1)
register_syscore_ops(&pch_pic_syscore_ops);
return 0;
@ -403,6 +404,9 @@ int __init pch_pic_acpi_init(struct irq_domain *parent,
int ret, vec_base;
struct fwnode_handle *domain_handle;
if (find_pch_pic(acpi_pchpic->gsi_base) >= 0)
return 0;
vec_base = acpi_pchpic->gsi_base - GSI_MIN_PCH_IRQ;
domain_handle = irq_domain_alloc_fwnode(&acpi_pchpic->address);

71
drivers/irqchip/irq-riscv-intc.c
View File

@ -26,20 +26,7 @@ static asmlinkage void riscv_intc_irq(struct pt_regs *regs)
if (unlikely(cause >= BITS_PER_LONG))
panic("unexpected interrupt cause");
switch (cause) {
#ifdef CONFIG_SMP
case RV_IRQ_SOFT:
/*
* We only use software interrupts to pass IPIs, so if a
* non-SMP system gets one, then we don't know what to do.
*/
handle_IPI(regs);
break;
#endif
default:
generic_handle_domain_irq(intc_domain, cause);
break;
}
generic_handle_domain_irq(intc_domain, cause);
}
/*
@ -59,22 +46,27 @@ static void riscv_intc_irq_unmask(struct irq_data *d)
csr_set(CSR_IE, BIT(d->hwirq));
}
static int riscv_intc_cpu_starting(unsigned int cpu)
static void riscv_intc_irq_eoi(struct irq_data *d)
{
csr_set(CSR_IE, BIT(RV_IRQ_SOFT));
return 0;
}
static int riscv_intc_cpu_dying(unsigned int cpu)
{
csr_clear(CSR_IE, BIT(RV_IRQ_SOFT));
return 0;
/*
* The RISC-V INTC driver uses handle_percpu_devid_irq() flow
* for the per-HART local interrupts and child irqchip drivers
* (such as PLIC, SBI IPI, CLINT, APLIC, IMSIC, etc) implement
* chained handlers for the per-HART local interrupts.
*
* In the absence of irq_eoi(), the chained_irq_enter() and
* chained_irq_exit() functions (used by child irqchip drivers)
* will do unnecessary mask/unmask of per-HART local interrupts
* at the time of handling interrupts. To avoid this, we provide
* an empty irq_eoi() callback for RISC-V INTC irqchip.
*/
}
static struct irq_chip riscv_intc_chip = {
.name = "RISC-V INTC",
.irq_mask = riscv_intc_irq_mask,
.irq_unmask = riscv_intc_irq_unmask,
.irq_eoi = riscv_intc_irq_eoi,
};
static int riscv_intc_domain_map(struct irq_domain *d, unsigned int irq,
@ -87,11 +79,39 @@ static int riscv_intc_domain_map(struct irq_domain *d, unsigned int irq,
return 0;
}
static int riscv_intc_domain_alloc(struct irq_domain *domain,
unsigned int virq, unsigned int nr_irqs,
void *arg)
{
int i, ret;
irq_hw_number_t hwirq;
unsigned int type = IRQ_TYPE_NONE;
struct irq_fwspec *fwspec = arg;
ret = irq_domain_translate_onecell(domain, fwspec, &hwirq, &type);
if (ret)
return ret;
for (i = 0; i < nr_irqs; i++) {
ret = riscv_intc_domain_map(domain, virq + i, hwirq + i);
if (ret)
return ret;
}
return 0;
}
static const struct irq_domain_ops riscv_intc_domain_ops = {
.map = riscv_intc_domain_map,
.xlate = irq_domain_xlate_onecell,
.alloc = riscv_intc_domain_alloc
};
static struct fwnode_handle *riscv_intc_hwnode(void)
{
return intc_domain->fwnode;
}
static int __init riscv_intc_init(struct device_node *node,
struct device_node *parent)
{
@ -126,10 +146,7 @@ static int __init riscv_intc_init(struct device_node *node,
return rc;
}
cpuhp_setup_state(CPUHP_AP_IRQ_RISCV_STARTING,
"irqchip/riscv/intc:starting",
riscv_intc_cpu_starting,
riscv_intc_cpu_dying);
riscv_set_intc_hwnode_fn(riscv_intc_hwnode);
pr_info("%d local interrupts mapped\n", BITS_PER_LONG);

93
drivers/irqchip/irq-sifive-plic.c
View File

@ -17,6 +17,7 @@
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/syscore_ops.h>
#include <asm/smp.h>
/*
@ -67,6 +68,8 @@ struct plic_priv {
struct irq_domain *irqdomain;
void __iomem *regs;
unsigned long plic_quirks;
unsigned int nr_irqs;
unsigned long *prio_save;
};
struct plic_handler {
@ -78,6 +81,7 @@ struct plic_handler {
*/
raw_spinlock_t enable_lock;
void __iomem *enable_base;
u32 *enable_save;
struct plic_priv *priv;
};
static int plic_parent_irq __ro_after_init;
@ -229,6 +233,71 @@ static int plic_irq_set_type(struct irq_data *d, unsigned int type)
return IRQ_SET_MASK_OK;
}
static int plic_irq_suspend(void)
{
unsigned int i, cpu;
u32 __iomem *reg;
struct plic_priv *priv;
priv = per_cpu_ptr(&plic_handlers, smp_processor_id())->priv;
for (i = 0; i < priv->nr_irqs; i++)
if (readl(priv->regs + PRIORITY_BASE + i * PRIORITY_PER_ID))
__set_bit(i, priv->prio_save);
else
__clear_bit(i, priv->prio_save);
for_each_cpu(cpu, cpu_present_mask) {
struct plic_handler *handler = per_cpu_ptr(&plic_handlers, cpu);
if (!handler->present)
continue;
raw_spin_lock(&handler->enable_lock);
for (i = 0; i < DIV_ROUND_UP(priv->nr_irqs, 32); i++) {
reg = handler->enable_base + i * sizeof(u32);
handler->enable_save[i] = readl(reg);
}
raw_spin_unlock(&handler->enable_lock);
}
return 0;
}
static void plic_irq_resume(void)
{
unsigned int i, index, cpu;
u32 __iomem *reg;
struct plic_priv *priv;
priv = per_cpu_ptr(&plic_handlers, smp_processor_id())->priv;
for (i = 0; i < priv->nr_irqs; i++) {
index = BIT_WORD(i);
writel((priv->prio_save[index] & BIT_MASK(i)) ? 1 : 0,
priv->regs + PRIORITY_BASE + i * PRIORITY_PER_ID);
}
for_each_cpu(cpu, cpu_present_mask) {
struct plic_handler *handler = per_cpu_ptr(&plic_handlers, cpu);
if (!handler->present)
continue;
raw_spin_lock(&handler->enable_lock);
for (i = 0; i < DIV_ROUND_UP(priv->nr_irqs, 32); i++) {
reg = handler->enable_base + i * sizeof(u32);
writel(handler->enable_save[i], reg);
}
raw_spin_unlock(&handler->enable_lock);
}
}
static struct syscore_ops plic_irq_syscore_ops = {
.suspend = plic_irq_suspend,
.resume = plic_irq_resume,
};
static int plic_irqdomain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq)
{
@ -345,6 +414,7 @@ static int __init __plic_init(struct device_node *node,
u32 nr_irqs;
struct plic_priv *priv;
struct plic_handler *handler;
unsigned int cpu;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
@ -363,15 +433,21 @@ static int __init __plic_init(struct device_node *node,
if (WARN_ON(!nr_irqs))
goto out_iounmap;
priv->nr_irqs = nr_irqs;
priv->prio_save = bitmap_alloc(nr_irqs, GFP_KERNEL);
if (!priv->prio_save)
goto out_free_priority_reg;
nr_contexts = of_irq_count(node);
if (WARN_ON(!nr_contexts))
goto out_iounmap;
goto out_free_priority_reg;
error = -ENOMEM;
priv->irqdomain = irq_domain_add_linear(node, nr_irqs + 1,
&plic_irqdomain_ops, priv);
if (WARN_ON(!priv->irqdomain))
goto out_iounmap;
goto out_free_priority_reg;
for (i = 0; i < nr_contexts; i++) {
struct of_phandle_args parent;
@ -441,6 +517,11 @@ static int __init __plic_init(struct device_node *node,
handler->enable_base = priv->regs + CONTEXT_ENABLE_BASE +
i * CONTEXT_ENABLE_SIZE;
handler->priv = priv;
handler->enable_save = kcalloc(DIV_ROUND_UP(nr_irqs, 32),
sizeof(*handler->enable_save), GFP_KERNEL);
if (!handler->enable_save)
goto out_free_enable_reg;
done:
for (hwirq = 1; hwirq <= nr_irqs; hwirq++) {
plic_toggle(handler, hwirq, 0);
@ -461,11 +542,19 @@ done:
plic_starting_cpu, plic_dying_cpu);
plic_cpuhp_setup_done = true;
}
register_syscore_ops(&plic_irq_syscore_ops);
pr_info("%pOFP: mapped %d interrupts with %d handlers for"
" %d contexts.\n", node, nr_irqs, nr_handlers, nr_contexts);
return 0;
out_free_enable_reg:
for_each_cpu(cpu, cpu_present_mask) {
handler = per_cpu_ptr(&plic_handlers, cpu);
kfree(handler->enable_save);
}
out_free_priority_reg:
kfree(priv->prio_save);
out_iounmap:
iounmap(priv->regs);
out_free_priv:

15
drivers/irqchip/irq-st.c
View File

@ -15,10 +15,7 @@
#include <linux/regmap.h>
#include <linux/slab.h>
#define STIH415_SYSCFG_642 0x0a8
#define STIH416_SYSCFG_7543 0x87c
#define STIH407_SYSCFG_5102 0x198
#define STID127_SYSCFG_734 0x088
#define ST_A9_IRQ_MASK 0x001FFFFF
#define ST_A9_IRQ_MAX_CHANS 2
@ -44,22 +41,10 @@ struct st_irq_syscfg {
};
static const struct of_device_id st_irq_syscfg_match[] = {
{
.compatible = "st,stih415-irq-syscfg",
.data = (void *)STIH415_SYSCFG_642,
},
{
.compatible = "st,stih416-irq-syscfg",
.data = (void *)STIH416_SYSCFG_7543,
},
{
.compatible = "st,stih407-irq-syscfg",
.data = (void *)STIH407_SYSCFG_5102,
},
{
.compatible = "st,stid127-irq-syscfg",
.data = (void *)STID127_SYSCFG_734,
},
{}
};

18
include/linux/arm-smccc.h
View File

@ -226,6 +226,24 @@ void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit);
extern u64 smccc_has_sve_hint;
/**
* arm_smccc_get_soc_id_version()
*
* Returns the SOC ID version.
*
* When ARM_SMCCC_ARCH_SOC_ID is not present, returns SMCCC_RET_NOT_SUPPORTED.
*/
s32 arm_smccc_get_soc_id_version(void);
/**
* arm_smccc_get_soc_id_revision()
*
* Returns the SOC ID revision.
*
* When ARM_SMCCC_ARCH_SOC_ID is not present, returns SMCCC_RET_NOT_SUPPORTED.
*/
s32 arm_smccc_get_soc_id_revision(void);
/**
* struct arm_smccc_res - Result from SMC/HVC call
* @a0-a3 result values from registers 0 to 3

6
include/linux/irqchip/arm-gic.h
View File

@ -151,12 +151,6 @@ int gic_of_init(struct device_node *node, struct device_node *parent);
*/
int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);
/*
* Legacy platforms not converted to DT yet must use this to init
* their GIC
*/
void gic_init(void __iomem *dist , void __iomem *cpu);
void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
int gic_get_cpu_id(unsigned int cpu);
void gic_migrate_target(unsigned int new_cpu_id);