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-rw-r--r--arch/x86/kernel/apic/io_apic.c194
1 files changed, 97 insertions, 97 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 94a4bcf9dca8..08f0d165e139 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -92,21 +92,21 @@ static struct ioapic {
DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
} ioapics[MAX_IO_APICS];
-#define mpc_ioapic_ver(id) ioapics[id].mp_config.apicver
+#define mpc_ioapic_ver(ioapic_idx) ioapics[ioapic_idx].mp_config.apicver
-int mpc_ioapic_id(int id)
+int mpc_ioapic_id(int ioapic_idx)
{
- return ioapics[id].mp_config.apicid;
+ return ioapics[ioapic_idx].mp_config.apicid;
}
-unsigned int mpc_ioapic_addr(int id)
+unsigned int mpc_ioapic_addr(int ioapic_idx)
{
- return ioapics[id].mp_config.apicaddr;
+ return ioapics[ioapic_idx].mp_config.apicaddr;
}
-struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int id)
+struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int ioapic_idx)
{
- return &ioapics[id].gsi_config;
+ return &ioapics[ioapic_idx].gsi_config;
}
int nr_ioapics;
@@ -712,13 +712,13 @@ int restore_ioapic_entries(void)
/*
* Find the IRQ entry number of a certain pin.
*/
-static int find_irq_entry(int apic, int pin, int type)
+static int find_irq_entry(int ioapic_idx, int pin, int type)
{
int i;
for (i = 0; i < mp_irq_entries; i++)
if (mp_irqs[i].irqtype == type &&
- (mp_irqs[i].dstapic == mpc_ioapic_id(apic) ||
+ (mp_irqs[i].dstapic == mpc_ioapic_id(ioapic_idx) ||
mp_irqs[i].dstapic == MP_APIC_ALL) &&
mp_irqs[i].dstirq == pin)
return i;
@@ -757,12 +757,13 @@ static int __init find_isa_irq_apic(int irq, int type)
(mp_irqs[i].srcbusirq == irq))
break;
}
+
if (i < mp_irq_entries) {
- int apic;
- for(apic = 0; apic < nr_ioapics; apic++) {
- if (mpc_ioapic_id(apic) == mp_irqs[i].dstapic)
- return apic;
- }
+ int ioapic_idx;
+
+ for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++)
+ if (mpc_ioapic_id(ioapic_idx) == mp_irqs[i].dstapic)
+ return ioapic_idx;
}
return -1;
@@ -977,7 +978,7 @@ static int pin_2_irq(int idx, int apic, int pin)
int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
struct io_apic_irq_attr *irq_attr)
{
- int apic, i, best_guess = -1;
+ int ioapic_idx, i, best_guess = -1;
apic_printk(APIC_DEBUG,
"querying PCI -> IRQ mapping bus:%d, slot:%d, pin:%d.\n",
@@ -990,8 +991,8 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
for (i = 0; i < mp_irq_entries; i++) {
int lbus = mp_irqs[i].srcbus;
- for (apic = 0; apic < nr_ioapics; apic++)
- if (mpc_ioapic_id(apic) == mp_irqs[i].dstapic ||
+ for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++)
+ if (mpc_ioapic_id(ioapic_idx) == mp_irqs[i].dstapic ||
mp_irqs[i].dstapic == MP_APIC_ALL)
break;
@@ -999,13 +1000,13 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
!mp_irqs[i].irqtype &&
(bus == lbus) &&
(slot == ((mp_irqs[i].srcbusirq >> 2) & 0x1f))) {
- int irq = pin_2_irq(i, apic, mp_irqs[i].dstirq);
+ int irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq);
- if (!(apic || IO_APIC_IRQ(irq)))
+ if (!(ioapic_idx || IO_APIC_IRQ(irq)))
continue;
if (pin == (mp_irqs[i].srcbusirq & 3)) {
- set_io_apic_irq_attr(irq_attr, apic,
+ set_io_apic_irq_attr(irq_attr, ioapic_idx,
mp_irqs[i].dstirq,
irq_trigger(i),
irq_polarity(i));
@@ -1016,7 +1017,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
* best-guess fuzzy result for broken mptables.
*/
if (best_guess < 0) {
- set_io_apic_irq_attr(irq_attr, apic,
+ set_io_apic_irq_attr(irq_attr, ioapic_idx,
mp_irqs[i].dstirq,
irq_trigger(i),
irq_polarity(i));
@@ -1263,24 +1264,24 @@ static int setup_ir_ioapic_entry(int irq,
{
int index;
struct irte irte;
- int apic_id = mpc_ioapic_id(attr->ioapic);
- struct intel_iommu *iommu = map_ioapic_to_ir(apic_id);
+ int ioapic_id = mpc_ioapic_id(attr->ioapic);
+ struct intel_iommu *iommu = map_ioapic_to_ir(ioapic_id);
if (!iommu) {
- pr_warn("No mapping iommu for ioapic %d\n", apic_id);
+ pr_warn("No mapping iommu for ioapic %d\n", ioapic_id);
return -ENODEV;
}
index = alloc_irte(iommu, irq, 1);
if (index < 0) {
- pr_warn("Failed to allocate IRTE for ioapic %d\n", apic_id);
+ pr_warn("Failed to allocate IRTE for ioapic %d\n", ioapic_id);
return -ENOMEM;
}
prepare_irte(&irte, vector, destination);
/* Set source-id of interrupt request */
- set_ioapic_sid(&irte, apic_id);
+ set_ioapic_sid(&irte, ioapic_id);
modify_irte(irq, &irte);
@@ -1389,30 +1390,30 @@ static void setup_ioapic_irq(unsigned int irq, struct irq_cfg *cfg,
ioapic_write_entry(attr->ioapic, attr->ioapic_pin, entry);
}
-static bool __init io_apic_pin_not_connected(int idx, int apic_id, int pin)
+static bool __init io_apic_pin_not_connected(int idx, int ioapic_idx, int pin)
{
if (idx != -1)
return false;
apic_printk(APIC_VERBOSE, KERN_DEBUG " apic %d pin %d not connected\n",
- mpc_ioapic_id(apic_id), pin);
+ mpc_ioapic_id(ioapic_idx), pin);
return true;
}
-static void __init __io_apic_setup_irqs(unsigned int apic_id)
+static void __init __io_apic_setup_irqs(unsigned int ioapic_idx)
{
int idx, node = cpu_to_node(0);
struct io_apic_irq_attr attr;
unsigned int pin, irq;
- 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))
+ for (pin = 0; pin < ioapics[ioapic_idx].nr_registers; pin++) {
+ idx = find_irq_entry(ioapic_idx, pin, mp_INT);
+ if (io_apic_pin_not_connected(idx, ioapic_idx, pin))
continue;
- irq = pin_2_irq(idx, apic_id, pin);
+ irq = pin_2_irq(idx, ioapic_idx, pin);
- if ((apic_id > 0) && (irq > 16))
+ if ((ioapic_idx > 0) && (irq > 16))
continue;
/*
@@ -1420,10 +1421,10 @@ static void __init __io_apic_setup_irqs(unsigned int apic_id)
* installed and if it returns 1:
*/
if (apic->multi_timer_check &&
- apic->multi_timer_check(apic_id, irq))
+ apic->multi_timer_check(ioapic_idx, irq))
continue;
- set_io_apic_irq_attr(&attr, apic_id, pin, irq_trigger(idx),
+ set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx),
irq_polarity(idx));
io_apic_setup_irq_pin(irq, node, &attr);
@@ -1432,12 +1433,12 @@ static void __init __io_apic_setup_irqs(unsigned int apic_id)
static void __init setup_IO_APIC_irqs(void)
{
- unsigned int apic_id;
+ unsigned int ioapic_idx;
apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n");
- for (apic_id = 0; apic_id < nr_ioapics; apic_id++)
- __io_apic_setup_irqs(apic_id);
+ for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++)
+ __io_apic_setup_irqs(ioapic_idx);
}
/*
@@ -1447,28 +1448,28 @@ static void __init setup_IO_APIC_irqs(void)
*/
void setup_IO_APIC_irq_extra(u32 gsi)
{
- int apic_id = 0, pin, idx, irq, node = cpu_to_node(0);
+ int ioapic_idx = 0, pin, idx, irq, node = cpu_to_node(0);
struct io_apic_irq_attr attr;
/*
* Convert 'gsi' to 'ioapic.pin'.
*/
- apic_id = mp_find_ioapic(gsi);
- if (apic_id < 0)
+ ioapic_idx = mp_find_ioapic(gsi);
+ if (ioapic_idx < 0)
return;
- pin = mp_find_ioapic_pin(apic_id, gsi);
- idx = find_irq_entry(apic_id, pin, mp_INT);
+ pin = mp_find_ioapic_pin(ioapic_idx, gsi);
+ idx = find_irq_entry(ioapic_idx, pin, mp_INT);
if (idx == -1)
return;
- irq = pin_2_irq(idx, apic_id, pin);
+ irq = pin_2_irq(idx, ioapic_idx, pin);
/* Only handle the non legacy irqs on secondary ioapics */
- if (apic_id == 0 || irq < NR_IRQS_LEGACY)
+ if (ioapic_idx == 0 || irq < NR_IRQS_LEGACY)
return;
- set_io_apic_irq_attr(&attr, apic_id, pin, irq_trigger(idx),
+ set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx),
irq_polarity(idx));
io_apic_setup_irq_pin_once(irq, node, &attr);
@@ -1477,8 +1478,8 @@ void setup_IO_APIC_irq_extra(u32 gsi)
/*
* 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,
- int vector)
+static void __init setup_timer_IRQ0_pin(unsigned int ioapic_idx,
+ unsigned int pin, int vector)
{
struct IO_APIC_route_entry entry;
@@ -1509,10 +1510,10 @@ static void __init setup_timer_IRQ0_pin(unsigned int apic_id, unsigned int pin,
/*
* Add it to the IO-APIC irq-routing table:
*/
- ioapic_write_entry(apic_id, pin, entry);
+ ioapic_write_entry(ioapic_idx, pin, entry);
}
-__apicdebuginit(void) print_IO_APIC(int apic)
+__apicdebuginit(void) print_IO_APIC(int ioapic_idx)
{
int i;
union IO_APIC_reg_00 reg_00;
@@ -1522,16 +1523,16 @@ __apicdebuginit(void) print_IO_APIC(int apic)
unsigned long flags;
raw_spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- reg_01.raw = io_apic_read(apic, 1);
+ reg_00.raw = io_apic_read(ioapic_idx, 0);
+ reg_01.raw = io_apic_read(ioapic_idx, 1);
if (reg_01.bits.version >= 0x10)
- reg_02.raw = io_apic_read(apic, 2);
+ reg_02.raw = io_apic_read(ioapic_idx, 2);
if (reg_01.bits.version >= 0x20)
- reg_03.raw = io_apic_read(apic, 3);
+ reg_03.raw = io_apic_read(ioapic_idx, 3);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
printk("\n");
- printk(KERN_DEBUG "IO APIC #%d......\n", mpc_ioapic_id(apic));
+ printk(KERN_DEBUG "IO APIC #%d......\n", mpc_ioapic_id(ioapic_idx));
printk(KERN_DEBUG ".... register #00: %08X\n", reg_00.raw);
printk(KERN_DEBUG "....... : physical APIC id: %02X\n", reg_00.bits.ID);
printk(KERN_DEBUG "....... : Delivery Type: %X\n", reg_00.bits.delivery_type);
@@ -1581,7 +1582,7 @@ __apicdebuginit(void) print_IO_APIC(int apic)
struct IO_APIC_route_entry entry;
struct IR_IO_APIC_route_entry *ir_entry;
- entry = ioapic_read_entry(apic, i);
+ entry = ioapic_read_entry(ioapic_idx, i);
ir_entry = (struct IR_IO_APIC_route_entry *) &entry;
printk(KERN_DEBUG " %02x %04X ",
i,
@@ -1602,7 +1603,7 @@ __apicdebuginit(void) print_IO_APIC(int apic)
} else {
struct IO_APIC_route_entry entry;
- entry = ioapic_read_entry(apic, i);
+ entry = ioapic_read_entry(ioapic_idx, i);
printk(KERN_DEBUG " %02x %02X ",
i,
entry.dest
@@ -1624,14 +1625,15 @@ __apicdebuginit(void) print_IO_APIC(int apic)
__apicdebuginit(void) print_IO_APICs(void)
{
- int apic, i;
+ int ioapic_idx;
struct irq_cfg *cfg;
unsigned int irq;
printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries);
- for (i = 0; i < nr_ioapics; i++)
+ for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++)
printk(KERN_DEBUG "number of IO-APIC #%d registers: %d.\n",
- mpc_ioapic_id(i), ioapics[i].nr_registers);
+ mpc_ioapic_id(ioapic_idx),
+ ioapics[ioapic_idx].nr_registers);
/*
* We are a bit conservative about what we expect. We have to
@@ -1639,8 +1641,8 @@ __apicdebuginit(void) print_IO_APICs(void)
*/
printk(KERN_INFO "testing the IO APIC.......................\n");
- for (apic = 0; apic < nr_ioapics; apic++)
- print_IO_APIC(apic);
+ for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++)
+ print_IO_APIC(ioapic_idx);
printk(KERN_DEBUG "IRQ to pin mappings:\n");
for_each_active_irq(irq) {
@@ -1977,7 +1979,7 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void)
{
union IO_APIC_reg_00 reg_00;
physid_mask_t phys_id_present_map;
- int apic_id;
+ int ioapic_idx;
int i;
unsigned char old_id;
unsigned long flags;
@@ -1991,21 +1993,20 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void)
/*
* Set the IOAPIC ID to the value stored in the MPC table.
*/
- for (apic_id = 0; apic_id < nr_ioapics; apic_id++) {
-
+ for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) {
/* Read the register 0 value */
raw_spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic_id, 0);
+ reg_00.raw = io_apic_read(ioapic_idx, 0);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
- old_id = mpc_ioapic_id(apic_id);
+ old_id = mpc_ioapic_id(ioapic_idx);
- if (mpc_ioapic_id(apic_id) >= get_physical_broadcast()) {
+ if (mpc_ioapic_id(ioapic_idx) >= get_physical_broadcast()) {
printk(KERN_ERR "BIOS bug, IO-APIC#%d ID is %d in the MPC table!...\n",
- apic_id, mpc_ioapic_id(apic_id));
+ ioapic_idx, mpc_ioapic_id(ioapic_idx));
printk(KERN_ERR "... fixing up to %d. (tell your hw vendor)\n",
reg_00.bits.ID);
- ioapics[apic_id].mp_config.apicid = reg_00.bits.ID;
+ ioapics[ioapic_idx].mp_config.apicid = reg_00.bits.ID;
}
/*
@@ -2014,9 +2015,9 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void)
* 'stuck on smp_invalidate_needed IPI wait' messages.
*/
if (apic->check_apicid_used(&phys_id_present_map,
- mpc_ioapic_id(apic_id))) {
+ mpc_ioapic_id(ioapic_idx))) {
printk(KERN_ERR "BIOS bug, IO-APIC#%d ID %d is already used!...\n",
- apic_id, mpc_ioapic_id(apic_id));
+ ioapic_idx, mpc_ioapic_id(ioapic_idx));
for (i = 0; i < get_physical_broadcast(); i++)
if (!physid_isset(i, phys_id_present_map))
break;
@@ -2025,14 +2026,14 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void)
printk(KERN_ERR "... fixing up to %d. (tell your hw vendor)\n",
i);
physid_set(i, phys_id_present_map);
- ioapics[apic_id].mp_config.apicid = i;
+ ioapics[ioapic_idx].mp_config.apicid = i;
} else {
physid_mask_t tmp;
- apic->apicid_to_cpu_present(mpc_ioapic_id(apic_id),
+ apic->apicid_to_cpu_present(mpc_ioapic_id(ioapic_idx),
&tmp);
apic_printk(APIC_VERBOSE, "Setting %d in the "
"phys_id_present_map\n",
- mpc_ioapic_id(apic_id));
+ mpc_ioapic_id(ioapic_idx));
physids_or(phys_id_present_map, phys_id_present_map, tmp);
}
@@ -2040,35 +2041,35 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void)
* We need to adjust the IRQ routing table
* if the ID changed.
*/
- if (old_id != mpc_ioapic_id(apic_id))
+ if (old_id != mpc_ioapic_id(ioapic_idx))
for (i = 0; i < mp_irq_entries; i++)
if (mp_irqs[i].dstapic == old_id)
mp_irqs[i].dstapic
- = mpc_ioapic_id(apic_id);
+ = mpc_ioapic_id(ioapic_idx);
/*
* Update the ID register according to the right value
* from the MPC table if they are different.
*/
- if (mpc_ioapic_id(apic_id) == reg_00.bits.ID)
+ if (mpc_ioapic_id(ioapic_idx) == reg_00.bits.ID)
continue;
apic_printk(APIC_VERBOSE, KERN_INFO
"...changing IO-APIC physical APIC ID to %d ...",
- mpc_ioapic_id(apic_id));
+ mpc_ioapic_id(ioapic_idx));
- reg_00.bits.ID = mpc_ioapic_id(apic_id);
+ reg_00.bits.ID = mpc_ioapic_id(ioapic_idx);
raw_spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic_id, 0, reg_00.raw);
+ io_apic_write(ioapic_idx, 0, reg_00.raw);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
/*
* Sanity check
*/
raw_spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic_id, 0);
+ reg_00.raw = io_apic_read(ioapic_idx, 0);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
- if (reg_00.bits.ID != mpc_ioapic_id(apic_id))
+ if (reg_00.bits.ID != mpc_ioapic_id(ioapic_idx))
printk("could not set ID!\n");
else
apic_printk(APIC_VERBOSE, " ok.\n");
@@ -2968,27 +2969,26 @@ static int __init io_apic_bug_finalize(void)
late_initcall(io_apic_bug_finalize);
-static void resume_ioapic_id(int ioapic_id)
+static void resume_ioapic_id(int ioapic_idx)
{
unsigned long flags;
union IO_APIC_reg_00 reg_00;
-
raw_spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(ioapic_id, 0);
- if (reg_00.bits.ID != mpc_ioapic_id(ioapic_id)) {
- reg_00.bits.ID = mpc_ioapic_id(ioapic_id);
- io_apic_write(ioapic_id, 0, reg_00.raw);
+ reg_00.raw = io_apic_read(ioapic_idx, 0);
+ if (reg_00.bits.ID != mpc_ioapic_id(ioapic_idx)) {
+ reg_00.bits.ID = mpc_ioapic_id(ioapic_idx);
+ io_apic_write(ioapic_idx, 0, reg_00.raw);
}
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
}
static void ioapic_resume(void)
{
- int ioapic_id;
+ int ioapic_idx;
- for (ioapic_id = nr_ioapics - 1; ioapic_id >= 0; ioapic_id--)
- resume_ioapic_id(ioapic_id);
+ for (ioapic_idx = nr_ioapics - 1; ioapic_idx >= 0; ioapic_idx--)
+ resume_ioapic_id(ioapic_idx);
restore_ioapic_entries();
}
@@ -3597,18 +3597,18 @@ io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr)
int io_apic_setup_irq_pin_once(unsigned int irq, int node,
struct io_apic_irq_attr *attr)
{
- unsigned int id = attr->ioapic, pin = attr->ioapic_pin;
+ unsigned int ioapic_idx = attr->ioapic, pin = attr->ioapic_pin;
int ret;
/* Avoid redundant programming */
- if (test_bit(pin, ioapics[id].pin_programmed)) {
+ if (test_bit(pin, ioapics[ioapic_idx].pin_programmed)) {
pr_debug("Pin %d-%d already programmed\n",
- mpc_ioapic_id(id), pin);
+ mpc_ioapic_id(ioapic_idx), pin);
return 0;
}
ret = io_apic_setup_irq_pin(irq, node, attr);
if (!ret)
- set_bit(pin, ioapics[id].pin_programmed);
+ set_bit(pin, ioapics[ioapic_idx].pin_programmed);
return ret;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 14:33:01 +0000