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x86: i8259: Convert to new irq_chip functions 

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner 2010-09-28 15:01:33 +02:00
parent 020dd984d7
commit 4305df947c
5 changed files with 47 additions and 44 deletions
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2
arch/x86/include/asm/i8259.h
View File

@ -55,6 +55,8 @@ extern struct irq_chip i8259A_chip;
struct legacy_pic {
int nr_legacy_irqs;
struct irq_chip *chip;
void (*mask)(unsigned int irq);
void (*unmask)(unsigned int irq);
void (*mask_all)(void);
void (*restore_mask)(void);
void (*init)(int auto_eoi);

20
arch/x86/kernel/apic/io_apic.c
View File

@ -1459,7 +1459,7 @@ static void setup_IO_APIC_irq(int apic_id, int pin, unsigned int irq, struct irq
ioapic_register_intr(irq, desc, trigger);
if (irq < legacy_pic->nr_legacy_irqs)
legacy_pic->chip->mask(irq);
legacy_pic->mask(irq);
ioapic_write_entry(apic_id, pin, entry);
}
@ -2233,7 +2233,7 @@ static unsigned int startup_ioapic_irq(unsigned int irq)
raw_spin_lock_irqsave(&ioapic_lock, flags);
if (irq < legacy_pic->nr_legacy_irqs) {
legacy_pic->chip->mask(irq);
legacy_pic->mask(irq);
if (legacy_pic->irq_pending(irq))
was_pending = 1;
}
@ -2928,7 +2928,7 @@ static inline void __init check_timer(void)
/*
* get/set the timer IRQ vector:
*/
legacy_pic->chip->mask(0);
legacy_pic->mask(0);
assign_irq_vector(0, cfg, apic->target_cpus());
/*
@ -3000,7 +3000,7 @@ static inline void __init check_timer(void)
if (timer_irq_works()) {
if (nmi_watchdog == NMI_IO_APIC) {
setup_nmi();
legacy_pic->chip->unmask(0);
legacy_pic->unmask(0);
}
if (disable_timer_pin_1 > 0)
clear_IO_APIC_pin(0, pin1);
@ -3023,14 +3023,14 @@ static inline void __init check_timer(void)
*/
replace_pin_at_irq_node(cfg, node, apic1, pin1, apic2, pin2);
setup_timer_IRQ0_pin(apic2, pin2, cfg->vector);
legacy_pic->chip->unmask(0);
legacy_pic->unmask(0);
if (timer_irq_works()) {
apic_printk(APIC_QUIET, KERN_INFO "....... works.\n");
timer_through_8259 = 1;
if (nmi_watchdog == NMI_IO_APIC) {
legacy_pic->chip->mask(0);
legacy_pic->mask(0);
setup_nmi();
legacy_pic->chip->unmask(0);
legacy_pic->unmask(0);
}
goto out;
}
@ -3038,7 +3038,7 @@ static inline void __init check_timer(void)
* Cleanup, just in case ...
*/
local_irq_disable();
legacy_pic->chip->mask(0);
legacy_pic->mask(0);
clear_IO_APIC_pin(apic2, pin2);
apic_printk(APIC_QUIET, KERN_INFO "....... failed.\n");
}
@ -3057,14 +3057,14 @@ static inline void __init check_timer(void)
lapic_register_intr(0, desc);
apic_write(APIC_LVT0, APIC_DM_FIXED | cfg->vector); /* Fixed mode */
legacy_pic->chip->unmask(0);
legacy_pic->unmask(0);
if (timer_irq_works()) {
apic_printk(APIC_QUIET, KERN_INFO "..... works.\n");
goto out;
}
local_irq_disable();
legacy_pic->chip->mask(0);
legacy_pic->mask(0);
apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_FIXED | cfg->vector);
apic_printk(APIC_QUIET, KERN_INFO "..... failed.\n");

2
arch/x86/kernel/apic/nmi.c
View File

@ -178,7 +178,7 @@ int __init check_nmi_watchdog(void)
error:
if (nmi_watchdog == NMI_IO_APIC) {
if (!timer_through_8259)
legacy_pic->chip->mask(0);
legacy_pic->mask(0);
on_each_cpu(__acpi_nmi_disable, NULL, 1);
}

63
arch/x86/kernel/i8259.c
View File

@ -29,24 +29,10 @@
* plus some generic x86 specific things if generic specifics makes
* any sense at all.
*/
static void init_8259A(int auto_eoi);
static int i8259A_auto_eoi;
DEFINE_RAW_SPINLOCK(i8259A_lock);
static void mask_and_ack_8259A(unsigned int);
static void mask_8259A(void);
static void unmask_8259A(void);
static void disable_8259A_irq(unsigned int irq);
static void enable_8259A_irq(unsigned int irq);
static void init_8259A(int auto_eoi);
static int i8259A_irq_pending(unsigned int irq);
struct irq_chip i8259A_chip = {
.name = "XT-PIC",
.mask = disable_8259A_irq,
.disable = disable_8259A_irq,
.unmask = enable_8259A_irq,
.mask_ack = mask_and_ack_8259A,
};
/*
* 8259A PIC functions to handle ISA devices:
@ -68,7 +54,7 @@ unsigned int cached_irq_mask = 0xffff;
*/
unsigned long io_apic_irqs;
static void disable_8259A_irq(unsigned int irq)
static void mask_8259A_irq(unsigned int irq)
{
unsigned int mask = 1 << irq;
unsigned long flags;
@ -82,7 +68,12 @@ static void disable_8259A_irq(unsigned int irq)
raw_spin_unlock_irqrestore(&i8259A_lock, flags);
}
static void enable_8259A_irq(unsigned int irq)
static void disable_8259A_irq(struct irq_data *data)
{
mask_8259A_irq(data->irq);
}
static void unmask_8259A_irq(unsigned int irq)
{
unsigned int mask = ~(1 << irq);
unsigned long flags;
@ -96,6 +87,11 @@ static void enable_8259A_irq(unsigned int irq)
raw_spin_unlock_irqrestore(&i8259A_lock, flags);
}
static void enable_8259A_irq(struct irq_data *data)
{
unmask_8259A_irq(data->irq);
}
static int i8259A_irq_pending(unsigned int irq)
{
unsigned int mask = 1<<irq;
@ -117,7 +113,7 @@ static void make_8259A_irq(unsigned int irq)
disable_irq_nosync(irq);
io_apic_irqs &= ~(1<<irq);
set_irq_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq,
"XT");
i8259A_chip.name);
enable_irq(irq);
}
@ -150,8 +146,9 @@ static inline int i8259A_irq_real(unsigned int irq)
* first, _then_ send the EOI, and the order of EOI
* to the two 8259s is important!
*/
static void mask_and_ack_8259A(unsigned int irq)
static void mask_and_ack_8259A(struct irq_data *data)
{
unsigned int irq = data->irq;
unsigned int irqmask = 1 << irq;
unsigned long flags;
@ -223,6 +220,14 @@ spurious_8259A_irq:
}
}
struct irq_chip i8259A_chip = {
.name = "XT-PIC",
.irq_mask = disable_8259A_irq,
.irq_disable = disable_8259A_irq,
.irq_unmask = enable_8259A_irq,
.irq_mask_ack = mask_and_ack_8259A,
};
static char irq_trigger[2];
/**
* ELCR registers (0x4d0, 0x4d1) control edge/level of IRQ
@ -342,9 +347,9 @@ static void init_8259A(int auto_eoi)
* In AEOI mode we just have to mask the interrupt
* when acking.
*/
i8259A_chip.mask_ack = disable_8259A_irq;
i8259A_chip.irq_mask_ack = disable_8259A_irq;
else
i8259A_chip.mask_ack = mask_and_ack_8259A;
i8259A_chip.irq_mask_ack = mask_and_ack_8259A;
udelay(100); /* wait for 8259A to initialize */
@ -363,14 +368,6 @@ static void init_8259A(int auto_eoi)
static void legacy_pic_noop(void) { };
static void legacy_pic_uint_noop(unsigned int unused) { };
static void legacy_pic_int_noop(int unused) { };
static struct irq_chip dummy_pic_chip = {
.name = "dummy pic",
.mask = legacy_pic_uint_noop,
.unmask = legacy_pic_uint_noop,
.disable = legacy_pic_uint_noop,
.mask_ack = legacy_pic_uint_noop,
};
static int legacy_pic_irq_pending_noop(unsigned int irq)
{
return 0;
@ -378,7 +375,9 @@ static int legacy_pic_irq_pending_noop(unsigned int irq)
struct legacy_pic null_legacy_pic = {
.nr_legacy_irqs = 0,
.chip = &dummy_pic_chip,
.chip = &dummy_irq_chip,
.mask = legacy_pic_uint_noop,
.unmask = legacy_pic_uint_noop,
.mask_all = legacy_pic_noop,
.restore_mask = legacy_pic_noop,
.init = legacy_pic_int_noop,
@ -389,7 +388,9 @@ struct legacy_pic null_legacy_pic = {
struct legacy_pic default_legacy_pic = {
.nr_legacy_irqs = NR_IRQS_LEGACY,
.chip = &i8259A_chip,
.mask_all = mask_8259A,
.mask = mask_8259A_irq,
.unmask = unmask_8259A_irq,
.mask_all = mask_8259A,
.restore_mask = unmask_8259A,
.init = init_8259A,
.irq_pending = i8259A_irq_pending,

4
arch/x86/kernel/smpboot.c
View File

@ -324,9 +324,9 @@ notrace static void __cpuinit start_secondary(void *unused)
check_tsc_sync_target();
if (nmi_watchdog == NMI_IO_APIC) {
legacy_pic->chip->mask(0);
legacy_pic->mask(0);
enable_NMI_through_LVT0();
legacy_pic->chip->unmask(0);
legacy_pic->unmask(0);
}
/* This must be done before setting cpu_online_mask */