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Diffstat (limited to 'arch/x86/kernel/apic/io_apic.c')
-rw-r--r--arch/x86/kernel/apic/io_apic.c258
1 files changed, 146 insertions, 112 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 6bdd2c7ead75..14862f11cc4a 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -73,8 +73,8 @@
*/
int sis_apic_bug = -1;
-static DEFINE_SPINLOCK(ioapic_lock);
-static DEFINE_SPINLOCK(vector_lock);
+static DEFINE_RAW_SPINLOCK(ioapic_lock);
+static DEFINE_RAW_SPINLOCK(vector_lock);
/*
* # of IRQ routing registers
@@ -94,8 +94,6 @@ struct mpc_intsrc mp_irqs[MAX_IRQ_SOURCES];
/* # of MP IRQ source entries */
int mp_irq_entries;
-/* Number of legacy interrupts */
-static int nr_legacy_irqs __read_mostly = NR_IRQS_LEGACY;
/* GSI interrupts */
static int nr_irqs_gsi = NR_IRQS_LEGACY;
@@ -140,27 +138,10 @@ static struct irq_pin_list *get_one_free_irq_2_pin(int node)
/* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */
#ifdef CONFIG_SPARSE_IRQ
-static struct irq_cfg irq_cfgx[] = {
+static struct irq_cfg irq_cfgx[NR_IRQS_LEGACY];
#else
-static struct irq_cfg irq_cfgx[NR_IRQS] = {
+static struct irq_cfg irq_cfgx[NR_IRQS];
#endif
- [0] = { .vector = IRQ0_VECTOR, },
- [1] = { .vector = IRQ1_VECTOR, },
- [2] = { .vector = IRQ2_VECTOR, },
- [3] = { .vector = IRQ3_VECTOR, },
- [4] = { .vector = IRQ4_VECTOR, },
- [5] = { .vector = IRQ5_VECTOR, },
- [6] = { .vector = IRQ6_VECTOR, },
- [7] = { .vector = IRQ7_VECTOR, },
- [8] = { .vector = IRQ8_VECTOR, },
- [9] = { .vector = IRQ9_VECTOR, },
- [10] = { .vector = IRQ10_VECTOR, },
- [11] = { .vector = IRQ11_VECTOR, },
- [12] = { .vector = IRQ12_VECTOR, },
- [13] = { .vector = IRQ13_VECTOR, },
- [14] = { .vector = IRQ14_VECTOR, },
- [15] = { .vector = IRQ15_VECTOR, },
-};
void __init io_apic_disable_legacy(void)
{
@@ -185,8 +166,14 @@ int __init arch_early_irq_init(void)
desc->chip_data = &cfg[i];
zalloc_cpumask_var_node(&cfg[i].domain, GFP_NOWAIT, node);
zalloc_cpumask_var_node(&cfg[i].old_domain, GFP_NOWAIT, node);
- if (i < nr_legacy_irqs)
- cpumask_setall(cfg[i].domain);
+ /*
+ * For legacy IRQ's, start with assigning irq0 to irq15 to
+ * IRQ0_VECTOR to IRQ15_VECTOR on cpu 0.
+ */
+ if (i < nr_legacy_irqs) {
+ cfg[i].vector = IRQ0_VECTOR + i;
+ cpumask_set_cpu(0, cfg[i].domain);
+ }
}
return 0;
@@ -406,7 +393,7 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
struct irq_pin_list *entry;
unsigned long flags;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
for_each_irq_pin(entry, cfg->irq_2_pin) {
unsigned int reg;
int pin;
@@ -415,11 +402,11 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
reg = io_apic_read(entry->apic, 0x10 + pin*2);
/* Is the remote IRR bit set? */
if (reg & IO_APIC_REDIR_REMOTE_IRR) {
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return true;
}
}
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return false;
}
@@ -433,10 +420,10 @@ static struct IO_APIC_route_entry ioapic_read_entry(int apic, int pin)
{
union entry_union eu;
unsigned long flags;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
eu.w1 = io_apic_read(apic, 0x10 + 2 * pin);
eu.w2 = io_apic_read(apic, 0x11 + 2 * pin);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return eu.entry;
}
@@ -459,9 +446,9 @@ __ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e)
void ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e)
{
unsigned long flags;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
__ioapic_write_entry(apic, pin, e);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
}
/*
@@ -474,10 +461,10 @@ static void ioapic_mask_entry(int apic, int pin)
unsigned long flags;
union entry_union eu = { .entry.mask = 1 };
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
io_apic_write(apic, 0x10 + 2*pin, eu.w1);
io_apic_write(apic, 0x11 + 2*pin, eu.w2);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
}
/*
@@ -604,9 +591,9 @@ static void mask_IO_APIC_irq_desc(struct irq_desc *desc)
BUG_ON(!cfg);
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
__mask_IO_APIC_irq(cfg);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
}
static void unmask_IO_APIC_irq_desc(struct irq_desc *desc)
@@ -614,9 +601,9 @@ static void unmask_IO_APIC_irq_desc(struct irq_desc *desc)
struct irq_cfg *cfg = desc->chip_data;
unsigned long flags;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
__unmask_IO_APIC_irq(cfg);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
}
static void mask_IO_APIC_irq(unsigned int irq)
@@ -1140,12 +1127,12 @@ void lock_vector_lock(void)
/* Used to the online set of cpus does not change
* during assign_irq_vector.
*/
- spin_lock(&vector_lock);
+ raw_spin_lock(&vector_lock);
}
void unlock_vector_lock(void)
{
- spin_unlock(&vector_lock);
+ raw_spin_unlock(&vector_lock);
}
static int
@@ -1162,7 +1149,8 @@ __assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask)
* Also, we've got to be careful not to trash gate
* 0x80, because int 0x80 is hm, kind of importantish. ;)
*/
- static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
+ static int current_vector = FIRST_EXTERNAL_VECTOR + VECTOR_OFFSET_START;
+ static int current_offset = VECTOR_OFFSET_START % 8;
unsigned int old_vector;
int cpu, err;
cpumask_var_t tmp_mask;
@@ -1198,7 +1186,7 @@ next:
if (vector >= first_system_vector) {
/* If out of vectors on large boxen, must share them. */
offset = (offset + 1) % 8;
- vector = FIRST_DEVICE_VECTOR + offset;
+ vector = FIRST_EXTERNAL_VECTOR + offset;
}
if (unlikely(current_vector == vector))
continue;
@@ -1232,9 +1220,9 @@ int assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask)
int err;
unsigned long flags;
- spin_lock_irqsave(&vector_lock, flags);
+ raw_spin_lock_irqsave(&vector_lock, flags);
err = __assign_irq_vector(irq, cfg, mask);
- spin_unlock_irqrestore(&vector_lock, flags);
+ raw_spin_unlock_irqrestore(&vector_lock, flags);
return err;
}
@@ -1268,11 +1256,16 @@ static void __clear_irq_vector(int irq, struct irq_cfg *cfg)
void __setup_vector_irq(int cpu)
{
/* Initialize vector_irq on a new cpu */
- /* This function must be called with vector_lock held */
int irq, vector;
struct irq_cfg *cfg;
struct irq_desc *desc;
+ /*
+ * vector_lock will make sure that we don't run into irq vector
+ * assignments that might be happening on another cpu in parallel,
+ * while we setup our initial vector to irq mappings.
+ */
+ raw_spin_lock(&vector_lock);
/* Mark the inuse vectors */
for_each_irq_desc(irq, desc) {
cfg = desc->chip_data;
@@ -1291,6 +1284,7 @@ void __setup_vector_irq(int cpu)
if (!cpumask_test_cpu(cpu, cfg->domain))
per_cpu(vector_irq, cpu)[vector] = -1;
}
+ raw_spin_unlock(&vector_lock);
}
static struct irq_chip ioapic_chip;
@@ -1440,6 +1434,14 @@ static void setup_IO_APIC_irq(int apic_id, int pin, unsigned int irq, struct irq
cfg = desc->chip_data;
+ /*
+ * For legacy irqs, cfg->domain starts with cpu 0 for legacy
+ * controllers like 8259. Now that IO-APIC can handle this irq, update
+ * the cfg->domain.
+ */
+ if (irq < nr_legacy_irqs && cpumask_test_cpu(0, cfg->domain))
+ apic->vector_allocation_domain(0, cfg->domain);
+
if (assign_irq_vector(irq, cfg, apic->target_cpus()))
return;
@@ -1473,7 +1475,7 @@ static struct {
static void __init setup_IO_APIC_irqs(void)
{
- int apic_id = 0, pin, idx, irq;
+ int apic_id, pin, idx, irq;
int notcon = 0;
struct irq_desc *desc;
struct irq_cfg *cfg;
@@ -1481,14 +1483,7 @@ static void __init setup_IO_APIC_irqs(void)
apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n");
-#ifdef CONFIG_ACPI
- if (!acpi_disabled && acpi_ioapic) {
- apic_id = mp_find_ioapic(0);
- if (apic_id < 0)
- apic_id = 0;
- }
-#endif
-
+ for (apic_id = 0; apic_id < nr_ioapics; apic_id++)
for (pin = 0; pin < nr_ioapic_registers[apic_id]; pin++) {
idx = find_irq_entry(apic_id, pin, mp_INT);
if (idx == -1) {
@@ -1510,6 +1505,9 @@ static void __init setup_IO_APIC_irqs(void)
irq = pin_2_irq(idx, apic_id, pin);
+ if ((apic_id > 0) && (irq > 16))
+ continue;
+
/*
* Skip the timer IRQ if there's a quirk handler
* installed and if it returns 1:
@@ -1539,6 +1537,56 @@ static void __init setup_IO_APIC_irqs(void)
}
/*
+ * for the gsit that is not in first ioapic
+ * but could not use acpi_register_gsi()
+ * like some special sci in IBM x3330
+ */
+void setup_IO_APIC_irq_extra(u32 gsi)
+{
+ int apic_id = 0, pin, idx, irq;
+ int node = cpu_to_node(boot_cpu_id);
+ struct irq_desc *desc;
+ struct irq_cfg *cfg;
+
+ /*
+ * Convert 'gsi' to 'ioapic.pin'.
+ */
+ apic_id = mp_find_ioapic(gsi);
+ if (apic_id < 0)
+ return;
+
+ pin = mp_find_ioapic_pin(apic_id, gsi);
+ idx = find_irq_entry(apic_id, pin, mp_INT);
+ if (idx == -1)
+ return;
+
+ irq = pin_2_irq(idx, apic_id, pin);
+#ifdef CONFIG_SPARSE_IRQ
+ desc = irq_to_desc(irq);
+ if (desc)
+ return;
+#endif
+ desc = irq_to_desc_alloc_node(irq, node);
+ if (!desc) {
+ printk(KERN_INFO "can not get irq_desc for %d\n", irq);
+ return;
+ }
+
+ cfg = desc->chip_data;
+ add_pin_to_irq_node(cfg, node, apic_id, pin);
+
+ if (test_bit(pin, mp_ioapic_routing[apic_id].pin_programmed)) {
+ pr_debug("Pin %d-%d already programmed\n",
+ mp_ioapics[apic_id].apicid, pin);
+ return;
+ }
+ set_bit(pin, mp_ioapic_routing[apic_id].pin_programmed);
+
+ setup_IO_APIC_irq(apic_id, pin, irq, desc,
+ irq_trigger(idx), irq_polarity(idx));
+}
+
+/*
* Set up the timer pin, possibly with the 8259A-master behind.
*/
static void __init setup_timer_IRQ0_pin(unsigned int apic_id, unsigned int pin,
@@ -1601,14 +1649,14 @@ __apicdebuginit(void) print_IO_APIC(void)
for (apic = 0; apic < nr_ioapics; apic++) {
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(apic, 0);
reg_01.raw = io_apic_read(apic, 1);
if (reg_01.bits.version >= 0x10)
reg_02.raw = io_apic_read(apic, 2);
if (reg_01.bits.version >= 0x20)
reg_03.raw = io_apic_read(apic, 3);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
printk("\n");
printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].apicid);
@@ -1830,7 +1878,7 @@ __apicdebuginit(void) print_PIC(void)
printk(KERN_DEBUG "\nprinting PIC contents\n");
- spin_lock_irqsave(&i8259A_lock, flags);
+ raw_spin_lock_irqsave(&i8259A_lock, flags);
v = inb(0xa1) << 8 | inb(0x21);
printk(KERN_DEBUG "... PIC IMR: %04x\n", v);
@@ -1844,7 +1892,7 @@ __apicdebuginit(void) print_PIC(void)
outb(0x0a,0xa0);
outb(0x0a,0x20);
- spin_unlock_irqrestore(&i8259A_lock, flags);
+ raw_spin_unlock_irqrestore(&i8259A_lock, flags);
printk(KERN_DEBUG "... PIC ISR: %04x\n", v);
@@ -1903,9 +1951,9 @@ void __init enable_IO_APIC(void)
* The number of IO-APIC IRQ registers (== #pins):
*/
for (apic = 0; apic < nr_ioapics; apic++) {
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_01.raw = io_apic_read(apic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
nr_ioapic_registers[apic] = reg_01.bits.entries+1;
}
@@ -2045,9 +2093,9 @@ void __init setup_ioapic_ids_from_mpc(void)
for (apic_id = 0; apic_id < nr_ioapics; apic_id++) {
/* Read the register 0 value */
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(apic_id, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
old_id = mp_ioapics[apic_id].apicid;
@@ -2106,16 +2154,16 @@ void __init setup_ioapic_ids_from_mpc(void)
mp_ioapics[apic_id].apicid);
reg_00.bits.ID = mp_ioapics[apic_id].apicid;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
io_apic_write(apic_id, 0, reg_00.raw);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
/*
* Sanity check
*/
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(apic_id, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
if (reg_00.bits.ID != mp_ioapics[apic_id].apicid)
printk("could not set ID!\n");
else
@@ -2198,7 +2246,7 @@ static unsigned int startup_ioapic_irq(unsigned int irq)
unsigned long flags;
struct irq_cfg *cfg;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
if (irq < nr_legacy_irqs) {
disable_8259A_irq(irq);
if (i8259A_irq_pending(irq))
@@ -2206,7 +2254,7 @@ static unsigned int startup_ioapic_irq(unsigned int irq)
}
cfg = irq_cfg(irq);
__unmask_IO_APIC_irq(cfg);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return was_pending;
}
@@ -2217,9 +2265,9 @@ static int ioapic_retrigger_irq(unsigned int irq)
struct irq_cfg *cfg = irq_cfg(irq);
unsigned long flags;
- spin_lock_irqsave(&vector_lock, flags);
+ raw_spin_lock_irqsave(&vector_lock, flags);
apic->send_IPI_mask(cpumask_of(cpumask_first(cfg->domain)), cfg->vector);
- spin_unlock_irqrestore(&vector_lock, flags);
+ raw_spin_unlock_irqrestore(&vector_lock, flags);
return 1;
}
@@ -2312,14 +2360,14 @@ set_ioapic_affinity_irq_desc(struct irq_desc *desc, const struct cpumask *mask)
irq = desc->irq;
cfg = desc->chip_data;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
ret = set_desc_affinity(desc, mask, &dest);
if (!ret) {
/* Only the high 8 bits are valid. */
dest = SET_APIC_LOGICAL_ID(dest);
__target_IO_APIC_irq(irq, dest, cfg);
}
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return ret;
}
@@ -2554,9 +2602,9 @@ static void eoi_ioapic_irq(struct irq_desc *desc)
irq = desc->irq;
cfg = desc->chip_data;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
__eoi_ioapic_irq(irq, cfg);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
}
static void ack_apic_level(unsigned int irq)
@@ -3138,13 +3186,13 @@ static int ioapic_resume(struct sys_device *dev)
data = container_of(dev, struct sysfs_ioapic_data, dev);
entry = data->entry;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(dev->id, 0);
if (reg_00.bits.ID != mp_ioapics[dev->id].apicid) {
reg_00.bits.ID = mp_ioapics[dev->id].apicid;
io_apic_write(dev->id, 0, reg_00.raw);
}
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
for (i = 0; i < nr_ioapic_registers[dev->id]; i++)
ioapic_write_entry(dev->id, i, entry[i]);
@@ -3207,7 +3255,7 @@ unsigned int create_irq_nr(unsigned int irq_want, int node)
if (irq_want < nr_irqs_gsi)
irq_want = nr_irqs_gsi;
- spin_lock_irqsave(&vector_lock, flags);
+ raw_spin_lock_irqsave(&vector_lock, flags);
for (new = irq_want; new < nr_irqs; new++) {
desc_new = irq_to_desc_alloc_node(new, node);
if (!desc_new) {
@@ -3226,14 +3274,11 @@ unsigned int create_irq_nr(unsigned int irq_want, int node)
irq = new;
break;
}
- spin_unlock_irqrestore(&vector_lock, flags);
+ raw_spin_unlock_irqrestore(&vector_lock, flags);
+
+ if (irq > 0)
+ dynamic_irq_init_keep_chip_data(irq);
- if (irq > 0) {
- dynamic_irq_init(irq);
- /* restore it, in case dynamic_irq_init clear it */
- if (desc_new)
- desc_new->chip_data = cfg_new;
- }
return irq;
}
@@ -3255,20 +3300,13 @@ int create_irq(void)
void destroy_irq(unsigned int irq)
{
unsigned long flags;
- struct irq_cfg *cfg;
- struct irq_desc *desc;
- /* store it, in case dynamic_irq_cleanup clear it */
- desc = irq_to_desc(irq);
- cfg = desc->chip_data;
- dynamic_irq_cleanup(irq);
- /* connect back irq_cfg */
- desc->chip_data = cfg;
+ dynamic_irq_cleanup_keep_chip_data(irq);
free_irte(irq);
- spin_lock_irqsave(&vector_lock, flags);
- __clear_irq_vector(irq, cfg);
- spin_unlock_irqrestore(&vector_lock, flags);
+ raw_spin_lock_irqsave(&vector_lock, flags);
+ __clear_irq_vector(irq, get_irq_chip_data(irq));
+ raw_spin_unlock_irqrestore(&vector_lock, flags);
}
/*
@@ -3805,9 +3843,9 @@ int __init io_apic_get_redir_entries (int ioapic)
union IO_APIC_reg_01 reg_01;
unsigned long flags;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_01.raw = io_apic_read(ioapic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return reg_01.bits.entries;
}
@@ -3969,9 +4007,9 @@ int __init io_apic_get_unique_id(int ioapic, int apic_id)
if (physids_empty(apic_id_map))
apic->ioapic_phys_id_map(&phys_cpu_present_map, &apic_id_map);
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(ioapic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
if (apic_id >= get_physical_broadcast()) {
printk(KERN_WARNING "IOAPIC[%d]: Invalid apic_id %d, trying "
@@ -4005,10 +4043,10 @@ int __init io_apic_get_unique_id(int ioapic, int apic_id)
if (reg_00.bits.ID != apic_id) {
reg_00.bits.ID = apic_id;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
io_apic_write(ioapic, 0, reg_00.raw);
reg_00.raw = io_apic_read(ioapic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
/* Sanity check */
if (reg_00.bits.ID != apic_id) {
@@ -4029,9 +4067,9 @@ int __init io_apic_get_version(int ioapic)
union IO_APIC_reg_01 reg_01;
unsigned long flags;
- spin_lock_irqsave(&ioapic_lock, flags);
+ raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_01.raw = io_apic_read(ioapic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
+ raw_spin_unlock_irqrestore(&ioapic_lock, flags);
return reg_01.bits.version;
}
@@ -4063,27 +4101,23 @@ int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity)
#ifdef CONFIG_SMP
void __init setup_ioapic_dest(void)
{
- int pin, ioapic = 0, irq, irq_entry;
+ int pin, ioapic, irq, irq_entry;
struct irq_desc *desc;
const struct cpumask *mask;
if (skip_ioapic_setup == 1)
return;
-#ifdef CONFIG_ACPI
- if (!acpi_disabled && acpi_ioapic) {
- ioapic = mp_find_ioapic(0);
- if (ioapic < 0)
- ioapic = 0;
- }
-#endif
-
+ for (ioapic = 0; ioapic < nr_ioapics; ioapic++)
for (pin = 0; pin < nr_ioapic_registers[ioapic]; pin++) {
irq_entry = find_irq_entry(ioapic, pin, mp_INT);
if (irq_entry == -1)
continue;
irq = pin_2_irq(irq_entry, ioapic, pin);
+ if ((ioapic > 0) && (irq > 16))
+ continue;
+
desc = irq_to_desc(irq);
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.