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-rw-r--r--drivers/sh/intc/Kconfig9
-rw-r--r--drivers/sh/intc/Makefile1
-rw-r--r--drivers/sh/intc/chip.c6
-rw-r--r--drivers/sh/intc/core.c98
-rw-r--r--drivers/sh/intc/internals.h13
-rw-r--r--drivers/sh/intc/irqdomain.c5
-rw-r--r--drivers/sh/intc/userimask.c19
-rw-r--r--drivers/sh/intc/virq-debugfs.c15
-rw-r--r--drivers/sh/intc/virq.c38
9 files changed, 98 insertions, 106 deletions
diff --git a/drivers/sh/intc/Kconfig b/drivers/sh/intc/Kconfig
index a305731742a9..5c701709fef5 100644
--- a/drivers/sh/intc/Kconfig
+++ b/drivers/sh/intc/Kconfig
@@ -1,12 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-only
config SH_INTC
- def_bool y
+ bool
select IRQ_DOMAIN
+if SH_INTC
+
comment "Interrupt controller options"
config INTC_USERIMASK
bool "Userspace interrupt masking support"
- depends on ARCH_SHMOBILE || (SUPERH && CPU_SH4A)
+ depends on (SUPERH && CPU_SH4A) || COMPILE_TEST
help
This enables support for hardware-assisted userspace hardirq
masking.
@@ -37,3 +40,5 @@ config INTC_MAPPING_DEBUG
between system IRQs and the per-controller id tables.
If in doubt, say N.
+
+endif
diff --git a/drivers/sh/intc/Makefile b/drivers/sh/intc/Makefile
index 54ec2a0643df..bdd855327e41 100644
--- a/drivers/sh/intc/Makefile
+++ b/drivers/sh/intc/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
obj-y := access.o chip.o core.o handle.o irqdomain.o virq.o
obj-$(CONFIG_INTC_BALANCING) += balancing.o
diff --git a/drivers/sh/intc/chip.c b/drivers/sh/intc/chip.c
index 46427b48e2f1..828d81e02b37 100644
--- a/drivers/sh/intc/chip.c
+++ b/drivers/sh/intc/chip.c
@@ -22,7 +22,7 @@ void _intc_enable(struct irq_data *data, unsigned long handle)
for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_E(handle)); cpu++) {
#ifdef CONFIG_SMP
- if (!cpumask_test_cpu(cpu, data->affinity))
+ if (!cpumask_test_cpu(cpu, irq_data_get_affinity_mask(data)))
continue;
#endif
addr = INTC_REG(d, _INTC_ADDR_E(handle), cpu);
@@ -50,7 +50,7 @@ static void intc_disable(struct irq_data *data)
for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_D(handle)); cpu++) {
#ifdef CONFIG_SMP
- if (!cpumask_test_cpu(cpu, data->affinity))
+ if (!cpumask_test_cpu(cpu, irq_data_get_affinity_mask(data)))
continue;
#endif
addr = INTC_REG(d, _INTC_ADDR_D(handle), cpu);
@@ -72,7 +72,7 @@ static int intc_set_affinity(struct irq_data *data,
if (!cpumask_intersects(cpumask, cpu_online_mask))
return -1;
- cpumask_copy(data->affinity, cpumask);
+ irq_data_update_affinity(data, cpumask);
return IRQ_SET_MASK_OK_NOCOPY;
}
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 8f32a1323a79..3dde703b7766 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -65,9 +65,9 @@ void intc_set_prio_level(unsigned int irq, unsigned int level)
raw_spin_unlock_irqrestore(&intc_big_lock, flags);
}
-static void intc_redirect_irq(unsigned int irq, struct irq_desc *desc)
+static void intc_redirect_irq(struct irq_desc *desc)
{
- generic_handle_irq((unsigned int)irq_get_handler_data(irq));
+ generic_handle_irq((unsigned int)irq_desc_get_handler_data(desc));
}
static void __init intc_register_irq(struct intc_desc *desc,
@@ -80,12 +80,6 @@ static void __init intc_register_irq(struct intc_desc *desc,
unsigned int data[2], primary;
unsigned long flags;
- /*
- * Register the IRQ position with the global IRQ map, then insert
- * it in to the radix tree.
- */
- irq_reserve_irq(irq);
-
raw_spin_lock_irqsave(&intc_big_lock, flags);
radix_tree_insert(&d->tree, enum_id, intc_irq_xlate_get(irq));
raw_spin_unlock_irqrestore(&intc_big_lock, flags);
@@ -106,8 +100,8 @@ static void __init intc_register_irq(struct intc_desc *desc,
primary = 1;
if (!data[0] && !data[1])
- pr_warning("missing unique irq mask for irq %d (vect 0x%04x)\n",
- irq, irq2evt(irq));
+ pr_warn("missing unique irq mask for irq %d (vect 0x%04x)\n",
+ irq, irq2evt(irq));
data[0] = data[0] ? data[0] : intc_get_mask_handle(desc, d, enum_id, 1);
data[1] = data[1] ? data[1] : intc_get_prio_handle(desc, d, enum_id, 1);
@@ -185,6 +179,21 @@ static unsigned int __init save_reg(struct intc_desc_int *d,
return 0;
}
+static bool __init intc_map(struct irq_domain *domain, int irq)
+{
+ if (!irq_to_desc(irq) && irq_alloc_desc_at(irq, NUMA_NO_NODE) != irq) {
+ pr_err("uname to allocate IRQ %d\n", irq);
+ return false;
+ }
+
+ if (irq_domain_associate(domain, irq, irq)) {
+ pr_err("domain association failure\n");
+ return false;
+ }
+
+ return true;
+}
+
int __init register_intc_controller(struct intc_desc *desc)
{
unsigned int i, k, smp;
@@ -200,7 +209,6 @@ int __init register_intc_controller(struct intc_desc *desc)
goto err0;
INIT_LIST_HEAD(&d->list);
- list_add_tail(&d->list, &intc_list);
raw_spin_lock_init(&d->lock);
INIT_RADIX_TREE(&d->tree, GFP_ATOMIC);
@@ -209,7 +217,7 @@ int __init register_intc_controller(struct intc_desc *desc)
if (desc->num_resources) {
d->nr_windows = desc->num_resources;
- d->window = kzalloc(d->nr_windows * sizeof(*d->window),
+ d->window = kcalloc(d->nr_windows, sizeof(*d->window),
GFP_NOWAIT);
if (!d->window)
goto err1;
@@ -219,8 +227,8 @@ int __init register_intc_controller(struct intc_desc *desc)
WARN_ON(resource_type(res) != IORESOURCE_MEM);
d->window[k].phys = res->start;
d->window[k].size = resource_size(res);
- d->window[k].virt = ioremap_nocache(res->start,
- resource_size(res));
+ d->window[k].virt = ioremap(res->start,
+ resource_size(res));
if (!d->window[k].virt)
goto err2;
}
@@ -236,12 +244,12 @@ int __init register_intc_controller(struct intc_desc *desc)
d->nr_reg += hw->ack_regs ? hw->nr_ack_regs : 0;
d->nr_reg += hw->subgroups ? hw->nr_subgroups : 0;
- d->reg = kzalloc(d->nr_reg * sizeof(*d->reg), GFP_NOWAIT);
+ d->reg = kcalloc(d->nr_reg, sizeof(*d->reg), GFP_NOWAIT);
if (!d->reg)
goto err2;
#ifdef CONFIG_SMP
- d->smp = kzalloc(d->nr_reg * sizeof(*d->smp), GFP_NOWAIT);
+ d->smp = kcalloc(d->nr_reg, sizeof(*d->smp), GFP_NOWAIT);
if (!d->smp)
goto err3;
#endif
@@ -259,7 +267,7 @@ int __init register_intc_controller(struct intc_desc *desc)
}
if (hw->prio_regs) {
- d->prio = kzalloc(hw->nr_vectors * sizeof(*d->prio),
+ d->prio = kcalloc(hw->nr_vectors, sizeof(*d->prio),
GFP_NOWAIT);
if (!d->prio)
goto err4;
@@ -275,7 +283,7 @@ int __init register_intc_controller(struct intc_desc *desc)
}
if (hw->sense_regs) {
- d->sense = kzalloc(hw->nr_vectors * sizeof(*d->sense),
+ d->sense = kcalloc(hw->nr_vectors, sizeof(*d->sense),
GFP_NOWAIT);
if (!d->sense)
goto err5;
@@ -317,24 +325,12 @@ int __init register_intc_controller(struct intc_desc *desc)
for (i = 0; i < hw->nr_vectors; i++) {
struct intc_vect *vect = hw->vectors + i;
unsigned int irq = evt2irq(vect->vect);
- int res;
if (!vect->enum_id)
continue;
- res = irq_create_identity_mapping(d->domain, irq);
- if (unlikely(res)) {
- if (res == -EEXIST) {
- res = irq_domain_associate(d->domain, irq, irq);
- if (unlikely(res)) {
- pr_err("domain association failure\n");
- continue;
- }
- } else {
- pr_err("can't identity map IRQ %d\n", irq);
- continue;
- }
- }
+ if (!intc_map(d->domain, irq))
+ continue;
intc_irq_xlate_set(irq, vect->enum_id, d);
intc_register_irq(desc, d, vect->enum_id, irq);
@@ -351,29 +347,16 @@ int __init register_intc_controller(struct intc_desc *desc)
* IRQ support, each vector still needs to have
* its own backing irq_desc.
*/
- res = irq_create_identity_mapping(d->domain, irq2);
- if (unlikely(res)) {
- if (res == -EEXIST) {
- res = irq_domain_associate(d->domain,
- irq2, irq2);
- if (unlikely(res)) {
- pr_err("domain association "
- "failure\n");
- continue;
- }
- } else {
- pr_err("can't identity map IRQ %d\n",
- irq);
- continue;
- }
- }
+ if (!intc_map(d->domain, irq2))
+ continue;
vect2->enum_id = 0;
/* redirect this interrupts to the first one */
irq_set_chip(irq2, &dummy_irq_chip);
- irq_set_chained_handler(irq2, intc_redirect_irq);
- irq_set_handler_data(irq2, (void *)irq);
+ irq_set_chained_handler_and_data(irq2,
+ intc_redirect_irq,
+ (void *)irq);
}
}
@@ -385,6 +368,7 @@ int __init register_intc_controller(struct intc_desc *desc)
d->skip_suspend = desc->skip_syscore_suspend;
+ list_add_tail(&d->list, &intc_list);
nr_intc_controllers++;
return 0;
@@ -410,7 +394,7 @@ err0:
return -ENOMEM;
}
-static int intc_suspend(void)
+static int intc_suspend(void *data)
{
struct intc_desc_int *d;
@@ -436,7 +420,7 @@ static int intc_suspend(void)
return 0;
}
-static void intc_resume(void)
+static void intc_resume(void *data)
{
struct intc_desc_int *d;
@@ -466,12 +450,16 @@ static void intc_resume(void)
}
}
-struct syscore_ops intc_syscore_ops = {
+static const struct syscore_ops intc_syscore_ops = {
.suspend = intc_suspend,
.resume = intc_resume,
};
-struct bus_type intc_subsys = {
+static struct syscore intc_syscore = {
+ .ops = &intc_syscore_ops,
+};
+
+const struct bus_type intc_subsys = {
.name = "intc",
.dev_name = "intc",
};
@@ -493,7 +481,7 @@ static int __init register_intc_devs(void)
struct intc_desc_int *d;
int error;
- register_syscore_ops(&intc_syscore_ops);
+ register_syscore(&intc_syscore);
error = subsys_system_register(&intc_subsys, NULL);
if (!error) {
diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h
index 7dff08e2a071..9b6cd1bebb4e 100644
--- a/drivers/sh/intc/internals.h
+++ b/drivers/sh/intc/internals.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/sh_intc.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
@@ -99,15 +100,7 @@ static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
*/
static inline void activate_irq(int irq)
{
-#ifdef CONFIG_ARM
- /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
- * sets on behalf of every irq_chip. Also sets IRQ_NOPROBE.
- */
- set_irq_flags(irq, IRQF_VALID);
-#else
- /* same effect on other architectures */
- irq_set_noprobe(irq);
-#endif
+ irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE);
}
static inline int intc_handle_int_cmp(const void *a, const void *b)
@@ -167,7 +160,7 @@ void _intc_enable(struct irq_data *data, unsigned long handle);
/* core.c */
extern struct list_head intc_list;
extern raw_spinlock_t intc_big_lock;
-extern struct bus_type intc_subsys;
+extern const struct bus_type intc_subsys;
unsigned int intc_get_dfl_prio_level(void);
unsigned int intc_get_prio_level(unsigned int irq);
diff --git a/drivers/sh/intc/irqdomain.c b/drivers/sh/intc/irqdomain.c
index 3968f1c3c5c3..ed7a570ffdf2 100644
--- a/drivers/sh/intc/irqdomain.c
+++ b/drivers/sh/intc/irqdomain.c
@@ -59,10 +59,9 @@ void __init intc_irq_domain_init(struct intc_desc_int *d,
* tree penalty for linear cases with non-zero hwirq bases.
*/
if (irq_base == 0 && irq_end == (irq_base + hw->nr_vectors - 1))
- d->domain = irq_domain_add_linear(NULL, hw->nr_vectors,
- &intc_evt_ops, NULL);
+ d->domain = irq_domain_create_linear(NULL, hw->nr_vectors, &intc_evt_ops, NULL);
else
- d->domain = irq_domain_add_tree(NULL, &intc_evt_ops, NULL);
+ d->domain = irq_domain_create_tree(NULL, &intc_evt_ops, NULL);
BUG_ON(!d->domain);
}
diff --git a/drivers/sh/intc/userimask.c b/drivers/sh/intc/userimask.c
index e649ceaaa410..a363f77881d1 100644
--- a/drivers/sh/intc/userimask.c
+++ b/drivers/sh/intc/userimask.c
@@ -14,7 +14,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/stat.h>
-#include <asm/sizes.h>
+#include <linux/sizes.h>
#include "internals.h"
static void __iomem *uimask;
@@ -32,8 +32,11 @@ store_intc_userimask(struct device *dev,
const char *buf, size_t count)
{
unsigned long level;
+ int ret;
- level = simple_strtoul(buf, NULL, 10);
+ ret = kstrtoul(buf, 10, &level);
+ if (ret != 0)
+ return ret;
/*
* Minimal acceptable IRQ levels are in the 2 - 16 range, but
@@ -61,10 +64,18 @@ static DEVICE_ATTR(userimask, S_IRUSR | S_IWUSR,
static int __init userimask_sysdev_init(void)
{
+ struct device *dev_root;
+ int ret = 0;
+
if (unlikely(!uimask))
return -ENXIO;
- return device_create_file(intc_subsys.dev_root, &dev_attr_userimask);
+ dev_root = bus_get_dev_root(&intc_subsys);
+ if (dev_root) {
+ ret = device_create_file(dev_root, &dev_attr_userimask);
+ put_device(dev_root);
+ }
+ return ret;
}
late_initcall(userimask_sysdev_init);
@@ -73,7 +84,7 @@ int register_intc_userimask(unsigned long addr)
if (unlikely(uimask))
return -EBUSY;
- uimask = ioremap_nocache(addr, SZ_4K);
+ uimask = ioremap(addr, SZ_4K);
if (unlikely(!uimask))
return -ENOMEM;
diff --git a/drivers/sh/intc/virq-debugfs.c b/drivers/sh/intc/virq-debugfs.c
index 9e62ba9311f0..5dd8febe6da5 100644
--- a/drivers/sh/intc/virq-debugfs.c
+++ b/drivers/sh/intc/virq-debugfs.c
@@ -16,8 +16,9 @@
#include <linux/debugfs.h>
#include "internals.h"
-static int intc_irq_xlate_debug(struct seq_file *m, void *priv)
+static int intc_irq_xlate_show(struct seq_file *m, void *priv)
{
+ const unsigned int nr_irqs = irq_get_nr_irqs();
int i;
seq_printf(m, "%-5s %-7s %-15s\n", "irq", "enum", "chip name");
@@ -37,17 +38,7 @@ static int intc_irq_xlate_debug(struct seq_file *m, void *priv)
return 0;
}
-static int intc_irq_xlate_open(struct inode *inode, struct file *file)
-{
- return single_open(file, intc_irq_xlate_debug, inode->i_private);
-}
-
-static const struct file_operations intc_irq_xlate_fops = {
- .open = intc_irq_xlate_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(intc_irq_xlate);
static int __init intc_irq_xlate_init(void)
{
diff --git a/drivers/sh/intc/virq.c b/drivers/sh/intc/virq.c
index f30ac9354ff2..a638c3048207 100644
--- a/drivers/sh/intc/virq.c
+++ b/drivers/sh/intc/virq.c
@@ -83,33 +83,34 @@ EXPORT_SYMBOL_GPL(intc_irq_lookup);
static int add_virq_to_pirq(unsigned int irq, unsigned int virq)
{
- struct intc_virq_list **last, *entry;
- struct irq_data *data = irq_get_irq_data(irq);
+ struct intc_virq_list *entry;
+ struct intc_virq_list **last = NULL;
/* scan for duplicates */
- last = (struct intc_virq_list **)&data->handler_data;
- for_each_virq(entry, data->handler_data) {
+ for_each_virq(entry, irq_get_handler_data(irq)) {
if (entry->irq == virq)
return 0;
last = &entry->next;
}
entry = kzalloc(sizeof(struct intc_virq_list), GFP_ATOMIC);
- if (!entry) {
- pr_err("can't allocate VIRQ mapping for %d\n", virq);
+ if (!entry)
return -ENOMEM;
- }
entry->irq = virq;
- *last = entry;
+ if (last)
+ *last = entry;
+ else
+ irq_set_handler_data(irq, entry);
return 0;
}
-static void intc_virq_handler(unsigned int irq, struct irq_desc *desc)
+static void intc_virq_handler(struct irq_desc *desc)
{
- struct irq_data *data = irq_get_irq_data(irq);
+ unsigned int irq = irq_desc_get_irq(desc);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(data);
struct intc_virq_list *entry, *vlist = irq_data_get_irq_handler_data(data);
struct intc_desc_int *d = get_intc_desc(irq);
@@ -118,12 +119,14 @@ static void intc_virq_handler(unsigned int irq, struct irq_desc *desc)
for_each_virq(entry, vlist) {
unsigned long addr, handle;
+ struct irq_desc *vdesc = irq_to_desc(entry->irq);
- handle = (unsigned long)irq_get_handler_data(entry->irq);
- addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
-
- if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
- generic_handle_irq(entry->irq);
+ if (vdesc) {
+ handle = (unsigned long)irq_desc_get_handler_data(vdesc);
+ addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
+ if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
+ generic_handle_irq_desc(vdesc);
+ }
}
chip->irq_unmask(data);
@@ -243,12 +246,13 @@ restart:
*/
irq_set_nothread(irq);
- irq_set_chained_handler(entry->pirq, intc_virq_handler);
+ /* Set handler data before installing the handler */
add_virq_to_pirq(entry->pirq, irq);
+ irq_set_chained_handler(entry->pirq, intc_virq_handler);
radix_tree_tag_clear(&d->tree, entry->enum_id,
INTC_TAG_VIRQ_NEEDS_ALLOC);
- radix_tree_replace_slot((void **)entries[i],
+ radix_tree_replace_slot(&d->tree, (void **)entries[i],
&intc_irq_xlate[irq]);
}
generated by cgit (git 2.34.1) at 2025-12-21 23:51:49 +0000