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Subject[patch 7/9] x86, ioapic: consolidate mp_ioapics into struct ioapic
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
---
arch/x86/include/asm/io_apic.h | 6 +-
arch/x86/kernel/acpi/boot.c | 8 +--
arch/x86/kernel/apic/io_apic.c | 94 +++++++++++++++++++++++------------------
arch/x86/kernel/devicetree.c | 2
arch/x86/kernel/mpparse.c | 2
5 files changed, 62 insertions(+), 50 deletions(-)
Index: linux-2.6-tip/arch/x86/kernel/apic/io_apic.c
===================================================================
--- linux-2.6-tip.orig/arch/x86/kernel/apic/io_apic.c
+++ linux-2.6-tip/arch/x86/kernel/apic/io_apic.c
@@ -85,10 +85,22 @@ static struct ioapic {
* Saved state during suspend/resume, or while enabling intr-remap.
*/
struct IO_APIC_route_entry *saved_registers;
+ /* I/O APIC config */
+ struct mpc_ioapic mp_config;
} ioapics[MAX_IO_APICS];

-/* I/O APIC entries */
-struct mpc_ioapic mp_ioapics[MAX_IO_APICS];
+#define mpc_ioapic_ver(id) ioapics[id].mp_config.apicver
+
+int mpc_ioapic_id(int id)
+{
+ return ioapics[id].mp_config.apicid;
+}
+
+unsigned int mpc_ioapic_addr(int id)
+{
+ return ioapics[id].mp_config.apicaddr;
+}
+
int nr_ioapics;

/* IO APIC gsi routing info */
@@ -311,7 +323,7 @@ struct io_apic {
static __attribute_const__ struct io_apic __iomem *io_apic_base(int idx)
{
return (void __iomem *) __fix_to_virt(FIX_IO_APIC_BASE_0 + idx)
- + (mp_ioapics[idx].apicaddr & ~PAGE_MASK);
+ + (mpc_ioapic_addr(idx) & ~PAGE_MASK);
}

static inline void io_apic_eoi(unsigned int apic, unsigned int vector)
@@ -701,7 +713,7 @@ static int find_irq_entry(int apic, int

for (i = 0; i < mp_irq_entries; i++)
if (mp_irqs[i].irqtype == type &&
- (mp_irqs[i].dstapic == mp_ioapics[apic].apicid ||
+ (mp_irqs[i].dstapic == mpc_ioapic_id(apic) ||
mp_irqs[i].dstapic == MP_APIC_ALL) &&
mp_irqs[i].dstirq == pin)
return i;
@@ -743,7 +755,7 @@ static int __init find_isa_irq_apic(int
if (i < mp_irq_entries) {
int apic;
for(apic = 0; apic < nr_ioapics; apic++) {
- if (mp_ioapics[apic].apicid == mp_irqs[i].dstapic)
+ if (mpc_ioapic_id(apic) == mp_irqs[i].dstapic)
return apic;
}
}
@@ -973,7 +985,7 @@ int IO_APIC_get_PCI_irq_vector(int bus,
int lbus = mp_irqs[i].srcbus;

for (apic = 0; apic < nr_ioapics; apic++)
- if (mp_ioapics[apic].apicid == mp_irqs[i].dstapic ||
+ if (mpc_ioapic_id(apic) == mp_irqs[i].dstapic ||
mp_irqs[i].dstapic == MP_APIC_ALL)
break;

@@ -1320,14 +1332,14 @@ static void setup_ioapic_irq(int apic_id
apic_printk(APIC_VERBOSE,KERN_DEBUG
"IOAPIC[%d]: Set routing entry (%d-%d -> 0x%x -> "
"IRQ %d Mode:%i Active:%i)\n",
- apic_id, mp_ioapics[apic_id].apicid, pin, cfg->vector,
+ apic_id, mpc_ioapic_id(apic_id), pin, cfg->vector,
irq, trigger, polarity);


- if (setup_ioapic_entry(mp_ioapics[apic_id].apicid, irq, &entry,
+ if (setup_ioapic_entry(mpc_ioapic_id(apic_id), irq, &entry,
dest, trigger, polarity, cfg->vector, pin)) {
printk("Failed to setup ioapic entry for ioapic %d, pin %d\n",
- mp_ioapics[apic_id].apicid, pin);
+ mpc_ioapic_id(apic_id), pin);
__clear_irq_vector(irq, cfg);
return;
}
@@ -1349,7 +1361,7 @@ static bool __init io_apic_pin_not_conne
return false;

apic_printk(APIC_VERBOSE, KERN_DEBUG " apic %d pin %d not connected\n",
- mp_ioapics[apic_id].apicid, pin);
+ mpc_ioapic_id(apic_id), pin);
return true;
}

@@ -1481,7 +1493,7 @@ __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, ioapics[i].nr_registers);
+ mpc_ioapic_id(i), ioapics[i].nr_registers);

/*
* We are a bit conservative about what we expect. We have to
@@ -1501,7 +1513,7 @@ __apicdebuginit(void) print_IO_APIC(void
raw_spin_unlock_irqrestore(&ioapic_lock, flags);

printk("\n");
- printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].apicid);
+ printk(KERN_DEBUG "IO APIC #%d......\n", mpc_ioapic_id(apic));
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);
@@ -1919,14 +1931,14 @@ void __init setup_ioapic_ids_from_mpc_no
reg_00.raw = io_apic_read(apic_id, 0);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);

- old_id = mp_ioapics[apic_id].apicid;
+ old_id = mpc_ioapic_id(apic_id);

- if (mp_ioapics[apic_id].apicid >= get_physical_broadcast()) {
+ if (mpc_ioapic_id(apic_id) >= get_physical_broadcast()) {
printk(KERN_ERR "BIOS bug, IO-APIC#%d ID is %d in the MPC table!...\n",
- apic_id, mp_ioapics[apic_id].apicid);
+ apic_id, mpc_ioapic_id(apic_id));
printk(KERN_ERR "... fixing up to %d. (tell your hw vendor)\n",
reg_00.bits.ID);
- mp_ioapics[apic_id].apicid = reg_00.bits.ID;
+ ioapics[apic_id].mp_config.apicid = reg_00.bits.ID;
}

/*
@@ -1935,9 +1947,9 @@ void __init setup_ioapic_ids_from_mpc_no
* 'stuck on smp_invalidate_needed IPI wait' messages.
*/
if (apic->check_apicid_used(&phys_id_present_map,
- mp_ioapics[apic_id].apicid)) {
+ mpc_ioapic_id(apic_id))) {
printk(KERN_ERR "BIOS bug, IO-APIC#%d ID %d is already used!...\n",
- apic_id, mp_ioapics[apic_id].apicid);
+ apic_id, mpc_ioapic_id(apic_id));
for (i = 0; i < get_physical_broadcast(); i++)
if (!physid_isset(i, phys_id_present_map))
break;
@@ -1946,13 +1958,14 @@ void __init setup_ioapic_ids_from_mpc_no
printk(KERN_ERR "... fixing up to %d. (tell your hw vendor)\n",
i);
physid_set(i, phys_id_present_map);
- mp_ioapics[apic_id].apicid = i;
+ ioapics[apic_id].mp_config.apicid = i;
} else {
physid_mask_t tmp;
- apic->apicid_to_cpu_present(mp_ioapics[apic_id].apicid, &tmp);
+ apic->apicid_to_cpu_present(mpc_ioapic_id(apic_id),
+ &tmp);
apic_printk(APIC_VERBOSE, "Setting %d in the "
"phys_id_present_map\n",
- mp_ioapics[apic_id].apicid);
+ mpc_ioapic_id(apic_id));
physids_or(phys_id_present_map, phys_id_present_map, tmp);
}

@@ -1960,24 +1973,24 @@ void __init setup_ioapic_ids_from_mpc_no
* We need to adjust the IRQ routing table
* if the ID changed.
*/
- if (old_id != mp_ioapics[apic_id].apicid)
+ if (old_id != mpc_ioapic_id(apic_id))
for (i = 0; i < mp_irq_entries; i++)
if (mp_irqs[i].dstapic == old_id)
mp_irqs[i].dstapic
- = mp_ioapics[apic_id].apicid;
+ = mpc_ioapic_id(apic_id);

/*
* Update the ID register according to the right value
* from the MPC table if they are different.
*/
- if (mp_ioapics[apic_id].apicid == reg_00.bits.ID)
+ if (mpc_ioapic_id(apic_id) == reg_00.bits.ID)
continue;

apic_printk(APIC_VERBOSE, KERN_INFO
"...changing IO-APIC physical APIC ID to %d ...",
- mp_ioapics[apic_id].apicid);
+ mpc_ioapic_id(apic_id));

- reg_00.bits.ID = mp_ioapics[apic_id].apicid;
+ reg_00.bits.ID = mpc_ioapic_id(apic_id);
raw_spin_lock_irqsave(&ioapic_lock, flags);
io_apic_write(apic_id, 0, reg_00.raw);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
@@ -1988,7 +2001,7 @@ void __init setup_ioapic_ids_from_mpc_no
raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(apic_id, 0);
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
- if (reg_00.bits.ID != mp_ioapics[apic_id].apicid)
+ if (reg_00.bits.ID != mpc_ioapic_id(apic_id))
printk("could not set ID!\n");
else
apic_printk(APIC_VERBOSE, " ok.\n");
@@ -2374,7 +2387,7 @@ static void eoi_ioapic_irq(unsigned int

raw_spin_lock_irqsave(&ioapic_lock, flags);
for_each_irq_pin(entry, cfg->irq_2_pin) {
- if (mp_ioapics[entry->apic].apicver >= 0x20) {
+ if (mpc_ioapic_ver(entry->apic) >= 0x20) {
/*
* Intr-remapping uses pin number as the virtual vector
* in the RTE. Actual vector is programmed in
@@ -2896,8 +2909,8 @@ static void resume_ioapic_id(int ioapic_

raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(ioapic_id, 0);
- if (reg_00.bits.ID != mp_ioapics[ioapic_id].apicid) {
- reg_00.bits.ID = mp_ioapics[ioapic_id].apicid;
+ 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);
}
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
@@ -3524,7 +3537,7 @@ int io_apic_setup_irq_pin_once(unsigned
/* Avoid redundant programming */
if (test_bit(pin, mp_ioapic_routing[id].pin_programmed)) {
pr_debug("Pin %d-%d already programmed\n",
- mp_ioapics[id].apicid, pin);
+ mpc_ioapic_id(id), pin);
return 0;
}
ret = io_apic_setup_irq_pin(irq, node, attr);
@@ -3694,8 +3707,7 @@ static u8 __init io_apic_unique_id(u8 id

bitmap_zero(used, 256);
for (i = 0; i < nr_ioapics; i++) {
- struct mpc_ioapic *ia = &mp_ioapics[i];
- __set_bit(ia->apicid, used);
+ __set_bit(mpc_ioapic_id(i), used);
}
if (!test_bit(id, used))
return id;
@@ -3826,7 +3838,7 @@ void __init ioapic_and_gsi_init(void)
ioapic_res = ioapic_setup_resources(nr_ioapics);
for (i = 0; i < nr_ioapics; i++) {
if (smp_found_config) {
- ioapic_phys = mp_ioapics[i].apicaddr;
+ ioapic_phys = mpc_ioapic_addr(i);
#ifdef CONFIG_X86_32
if (!ioapic_phys) {
printk(KERN_ERR
@@ -3930,13 +3942,13 @@ void __init mp_register_ioapic(int id, u

idx = nr_ioapics;

- mp_ioapics[idx].type = MP_IOAPIC;
- mp_ioapics[idx].flags = MPC_APIC_USABLE;
- mp_ioapics[idx].apicaddr = address;
+ ioapics[idx].mp_config.type = MP_IOAPIC;
+ ioapics[idx].mp_config.flags = MPC_APIC_USABLE;
+ ioapics[idx].mp_config.apicaddr = address;

set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
- mp_ioapics[idx].apicid = io_apic_unique_id(id);
- mp_ioapics[idx].apicver = io_apic_get_version(idx);
+ ioapics[idx].mp_config.apicid = io_apic_unique_id(id);
+ ioapics[idx].mp_config.apicver = io_apic_get_version(idx);

/*
* Build basic GSI lookup table to facilitate gsi->io_apic lookups
@@ -3955,8 +3967,8 @@ void __init mp_register_ioapic(int id, u
gsi_top = mp_gsi_routing[idx].gsi_end + 1;

printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
- "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
- mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
+ "GSI %d-%d\n", idx, mpc_ioapic_id(idx),
+ mpc_ioapic_ver(idx), mpc_ioapic_addr(idx),
mp_gsi_routing[idx].gsi_base, mp_gsi_routing[idx].gsi_end);

nr_ioapics++;
Index: linux-2.6-tip/arch/x86/include/asm/io_apic.h
===================================================================
--- linux-2.6-tip.orig/arch/x86/include/asm/io_apic.h
+++ linux-2.6-tip/arch/x86/include/asm/io_apic.h
@@ -106,10 +106,10 @@ struct IR_IO_APIC_route_entry {
*/
extern int nr_ioapics;

-#define MP_MAX_IOAPIC_PIN 127
+extern int mpc_ioapic_id(int ioapic);
+extern unsigned int mpc_ioapic_addr(int ioapic);

-/* I/O APIC entries */
-extern struct mpc_ioapic mp_ioapics[MAX_IO_APICS];
+#define MP_MAX_IOAPIC_PIN 127

/* # of MP IRQ source entries */
extern int mp_irq_entries;
Index: linux-2.6-tip/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6-tip.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6-tip/arch/x86/kernel/acpi/boot.c
@@ -970,7 +970,7 @@ void __init mp_override_legacy_irq(u8 bu
mp_irq.irqflag = (trigger << 2) | polarity;
mp_irq.srcbus = MP_ISA_BUS;
mp_irq.srcbusirq = bus_irq; /* IRQ */
- mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
+ mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
mp_irq.dstirq = pin; /* INTIN# */

mp_save_irq(&mp_irq);
@@ -1021,7 +1021,7 @@ void __init mp_config_acpi_legacy_irqs(v
if (ioapic < 0)
continue;
pin = mp_find_ioapic_pin(ioapic, gsi);
- dstapic = mp_ioapics[ioapic].apicid;
+ dstapic = mpc_ioapic_id(ioapic);

for (idx = 0; idx < mp_irq_entries; idx++) {
struct mpc_intsrc *irq = mp_irqs + idx;
@@ -1082,7 +1082,7 @@ static int mp_config_acpi_gsi(struct dev
mp_irq.srcbus = number;
mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
ioapic = mp_find_ioapic(gsi);
- mp_irq.dstapic = mp_ioapics[ioapic].apicid;
+ mp_irq.dstapic = mpc_ioapic_id(ioapic);
mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);

mp_save_irq(&mp_irq);
@@ -1113,7 +1113,7 @@ int mp_register_gsi(struct device *dev,

if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
printk(KERN_ERR "Invalid reference to IOAPIC pin "
- "%d-%d\n", mp_ioapics[ioapic].apicid,
+ "%d-%d\n", mpc_ioapic_id(ioapic),
ioapic_pin);
return gsi;
}
Index: linux-2.6-tip/arch/x86/kernel/mpparse.c
===================================================================
--- linux-2.6-tip.orig/arch/x86/kernel/mpparse.c
+++ linux-2.6-tip/arch/x86/kernel/mpparse.c
@@ -285,7 +285,7 @@ static void __init construct_default_ioi
intsrc.type = MP_INTSRC;
intsrc.irqflag = 0; /* conforming */
intsrc.srcbus = 0;
- intsrc.dstapic = mp_ioapics[0].apicid;
+ intsrc.dstapic = mpc_ioapic_id(0);

intsrc.irqtype = mp_INT;

Index: linux-2.6-tip/arch/x86/kernel/devicetree.c
===================================================================
--- linux-2.6-tip.orig/arch/x86/kernel/devicetree.c
+++ linux-2.6-tip/arch/x86/kernel/devicetree.c
@@ -407,7 +407,7 @@ static void __init ioapic_add_ofnode(str
}

for (i = 0; i < nr_ioapics; i++) {
- if (r.start == mp_ioapics[i].apicaddr) {
+ if (r.start == mpc_ioapic_addr(i)) {
struct irq_domain *id;

id = kzalloc(sizeof(*id), GFP_KERNEL);



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