x86: don't set IO APIC features if IO APIC is not enabled
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/mpparse_32.c b/arch/x86/kernel/mpparse_32.c
index 4f4cfad..09cb778 100644
--- a/arch/x86/kernel/mpparse_32.c
+++ b/arch/x86/kernel/mpparse_32.c
@@ -221,6 +221,8 @@
}
}
+#ifdef CONFIG_X86_IO_APIC
+
static int bad_ioapic(unsigned long address)
{
if (nr_ioapics >= MAX_IO_APICS) {
@@ -263,6 +265,8 @@
panic("Max # of irq sources exceeded!!\n");
}
+#endif
+
static void __init MP_lintsrc_info (struct mpc_config_lintsrc *m)
{
Dprintk("Lint: type %d, pol %d, trig %d, bus %d,"
@@ -421,21 +425,25 @@
}
case MP_IOAPIC:
{
+#ifdef CONFIG_X86_IO_APIC
struct mpc_config_ioapic *m=
(struct mpc_config_ioapic *)mpt;
MP_ioapic_info(m);
mpt+=sizeof(*m);
count+=sizeof(*m);
+#endif
break;
}
case MP_INTSRC:
{
+#ifdef CONFIG_X86_IO_APIC
struct mpc_config_intsrc *m=
(struct mpc_config_intsrc *)mpt;
MP_intsrc_info(m);
mpt+=sizeof(*m);
count+=sizeof(*m);
+#endif
break;
}
case MP_LINTSRC:
@@ -463,6 +471,8 @@
return num_processors;
}
+#ifdef CONFIG_X86_IO_APIC
+
static int __init ELCR_trigger(unsigned int irq)
{
unsigned int port;
@@ -537,11 +547,15 @@
MP_intsrc_info(&intsrc);
}
+#endif
+
static inline void __init construct_default_ISA_mptable(int mpc_default_type)
{
struct mpc_config_processor processor;
struct mpc_config_bus bus;
+#ifdef CONFIG_X86_IO_APIC
struct mpc_config_ioapic ioapic;
+#endif
struct mpc_config_lintsrc lintsrc;
int linttypes[2] = { mp_ExtINT, mp_NMI };
int i;
@@ -597,6 +611,7 @@
MP_bus_info(&bus);
}
+#ifdef CONFIG_X86_IO_APIC
ioapic.mpc_type = MP_IOAPIC;
ioapic.mpc_apicid = 2;
ioapic.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01;
@@ -608,7 +623,7 @@
* We set up most of the low 16 IO-APIC pins according to MPS rules.
*/
construct_default_ioirq_mptable(mpc_default_type);
-
+#endif
lintsrc.mpc_type = MP_LINTSRC;
lintsrc.mpc_irqflag = 0; /* conforming */
lintsrc.mpc_srcbusid = 0;
@@ -670,6 +685,8 @@
printk(KERN_ERR "... disabling SMP support. (tell your hw vendor)\n");
return;
}
+
+#ifdef CONFIG_X86_IO_APIC
/*
* If there are no explicit MP IRQ entries, then we are
* broken. We set up most of the low 16 IO-APIC pins to
@@ -687,7 +704,7 @@
construct_default_ioirq_mptable(0);
}
-
+#endif
} else
BUG();
@@ -967,8 +984,9 @@
intsrc.mpc_type = MP_INTSRC;
intsrc.mpc_irqflag = 0; /* Conforming */
intsrc.mpc_srcbus = MP_ISA_BUS;
+#ifdef CONFIG_X86_IO_APIC
intsrc.mpc_dstapic = mp_ioapics[ioapic].mpc_apicid;
-
+#endif
/*
* Use the default configuration for the IRQs 0-15. Unless
* overridden by (MADT) interrupt source override entries.
diff --git a/include/asm-x86/mach-default/mach_apic.h b/include/asm-x86/mach-default/mach_apic.h
index 14217a9..0a6634f 100644
--- a/include/asm-x86/mach-default/mach_apic.h
+++ b/include/asm-x86/mach-default/mach_apic.h
@@ -69,8 +69,10 @@
static inline void setup_apic_routing(void)
{
+#ifdef CONFIG_X86_IO_APIC
printk("Enabling APIC mode: %s. Using %d I/O APICs\n",
"Flat", nr_ioapics);
+#endif
}
static inline int apicid_to_node(int logical_apicid)
diff --git a/include/asm-x86/mpspec.h b/include/asm-x86/mpspec.h
index 1f6445b..08cc5e0 100644
--- a/include/asm-x86/mpspec.h
+++ b/include/asm-x86/mpspec.h
@@ -36,9 +36,6 @@
extern unsigned int boot_cpu_physical_apicid;
extern int smp_found_config;
-extern int nr_ioapics;
-extern int mp_irq_entries;
-extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
extern int mpc_default_type;
extern unsigned long mp_lapic_addr;