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x86, ioapic: Add struct ioapic 

Introduce struct ioapic with nr_registers field.

This will pave way for consolidating different MAX_IO_APICS
arrays into it.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.744315519@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Suresh Siddha 2011-05-18 16:31:35 -07:00 committed by Ingo Molnar
parent 15bac20bd8
commit b69c6c3bec
2 changed files with 17 additions and 16 deletions
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1
arch/x86/include/asm/io_apic.h
View File

@ -105,7 +105,6 @@ struct IR_IO_APIC_route_entry {
* # of IO-APICs and # of IRQ routing registers
*/
extern int nr_ioapics;
extern int nr_ioapic_registers[MAX_IO_APICS];
#define MP_MAX_IOAPIC_PIN 127

32
arch/x86/kernel/apic/io_apic.c
View File

@ -76,10 +76,12 @@ int sis_apic_bug = -1;
static DEFINE_RAW_SPINLOCK(ioapic_lock);
static DEFINE_RAW_SPINLOCK(vector_lock);
/*
* # of IRQ routing registers
*/
int nr_ioapic_registers[MAX_IO_APICS];
static struct ioapic {
/*
* # of IRQ routing registers
*/
int nr_registers;
} ioapics[MAX_IO_APICS];
/* I/O APIC entries */
struct mpc_ioapic mp_ioapics[MAX_IO_APICS];
@ -187,7 +189,7 @@ int __init arch_early_irq_init(void)
for (i = 0; i < nr_ioapics; i++) {
ioapic_saved_data[i] =
kzalloc(sizeof(struct IO_APIC_route_entry) *
nr_ioapic_registers[i], GFP_KERNEL);
ioapics[i].nr_registers, GFP_KERNEL);
if (!ioapic_saved_data[i])
pr_err("IOAPIC %d: suspend/resume impossible!\n", i);
}
@ -586,7 +588,7 @@ static void clear_IO_APIC (void)
int apic, pin;
for (apic = 0; apic < nr_ioapics; apic++)
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++)
for (pin = 0; pin < ioapics[apic].nr_registers; pin++)
clear_IO_APIC_pin(apic, pin);
}
@ -642,7 +644,7 @@ int save_ioapic_entries(void)
continue;
}
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++)
for (pin = 0; pin < ioapics[apic].nr_registers; pin++)
ioapic_saved_data[apic][pin] =
ioapic_read_entry(apic, pin);
}
@ -661,7 +663,7 @@ void mask_ioapic_entries(void)
if (!ioapic_saved_data[apic])
continue;
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
for (pin = 0; pin < ioapics[apic].nr_registers; pin++) {
struct IO_APIC_route_entry entry;
entry = ioapic_saved_data[apic][pin];
@ -684,7 +686,7 @@ int restore_ioapic_entries(void)
if (!ioapic_saved_data[apic])
continue;
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++)
for (pin = 0; pin < ioapics[apic].nr_registers; pin++)
ioapic_write_entry(apic, pin,
ioapic_saved_data[apic][pin]);
}
@ -1191,7 +1193,7 @@ static inline int IO_APIC_irq_trigger(int irq)
int apic, idx, pin;
for (apic = 0; apic < nr_ioapics; apic++) {
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
for (pin = 0; pin < ioapics[apic].nr_registers; pin++) {
idx = find_irq_entry(apic, pin, mp_INT);
if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin)))
return irq_trigger(idx);
@ -1358,7 +1360,7 @@ static void __init __io_apic_setup_irqs(unsigned int apic_id)
struct io_apic_irq_attr attr;
unsigned int pin, irq;
for (pin = 0; pin < nr_ioapic_registers[apic_id]; pin++) {
for (pin = 0; pin < ioapics[apic_id].nr_registers; pin++) {
idx = find_irq_entry(apic_id, pin, mp_INT);
if (io_apic_pin_not_connected(idx, apic_id, pin))
continue;
@ -1480,7 +1482,7 @@ __apicdebuginit(void) print_IO_APIC(void)
printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries);
for (i = 0; i < nr_ioapics; i++)
printk(KERN_DEBUG "number of IO-APIC #%d registers: %d.\n",
mp_ioapics[i].apicid, nr_ioapic_registers[i]);
mp_ioapics[i].apicid, ioapics[i].nr_registers);
/*
* We are a bit conservative about what we expect. We have to
@ -1794,7 +1796,7 @@ void __init enable_IO_APIC(void)
for(apic = 0; apic < nr_ioapics; apic++) {
int pin;
/* See if any of the pins is in ExtINT mode */
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
for (pin = 0; pin < ioapics[apic].nr_registers; pin++) {
struct IO_APIC_route_entry entry;
entry = ioapic_read_entry(apic, pin);
@ -3754,7 +3756,7 @@ void __init setup_ioapic_dest(void)
return;
for (ioapic = 0; ioapic < nr_ioapics; ioapic++)
for (pin = 0; pin < nr_ioapic_registers[ioapic]; pin++) {
for (pin = 0; pin < ioapics[ioapic].nr_registers; pin++) {
irq_entry = find_irq_entry(ioapic, pin, mp_INT);
if (irq_entry == -1)
continue;
@ -3948,7 +3950,7 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
/*
* The number of IO-APIC IRQ registers (== #pins):
*/
nr_ioapic_registers[idx] = entries;
ioapics[idx].nr_registers = entries;
if (mp_gsi_routing[idx].gsi_end >= gsi_top)
gsi_top = mp_gsi_routing[idx].gsi_end + 1;