11 files changed, 76 insertions, 41 deletions

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index b2751eadbc56..c134a545b37e 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -166,7 +166,6 @@ config X86_VISWS
 
 config X86_GENERICARCH
        bool "Generic architecture (Summit, bigsmp, ES7000, default)"
-       depends on SMP
        help
           This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
           It is intended for a generic binary kernel.
@@ -263,7 +262,7 @@ source "kernel/Kconfig.preempt"
 
 config X86_UP_APIC
         bool "Local APIC support on uniprocessors"
-        depends on !SMP && !(X86_VISWS || X86_VOYAGER)
+        depends on !SMP && !(X86_VISWS || X86_VOYAGER || X86_GENERICARCH)
         help
           A local APIC (Advanced Programmable Interrupt Controller) is an
           integrated interrupt controller in the CPU. If you have a single-CPU
@@ -288,12 +287,12 @@ config X86_UP_IOAPIC
 
 config X86_LOCAL_APIC
         bool
-        depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER)
+        depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH
         default y
 
 config X86_IO_APIC
         bool
-        depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER))
+        depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH
         default y
 
 config X86_VISWS_APIC
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 4fb32c551fe0..4eacd52eeb74 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -40,6 +40,7 @@
 #include <asm/nmi.h>
 
 #include <mach_apic.h>
+#include <mach_apicdef.h>
 
 #include "io_ports.h"
 
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index a70b5fa0ef06..827569688562 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -30,6 +30,7 @@
 #include <asm/io_apic.h>
 
 #include <mach_apic.h>
+#include <mach_apicdef.h>
 #include <mach_mpparse.h>
 #include <bios_ebda.h>
 
diff --git a/arch/i386/mach-generic/bigsmp.c b/arch/i386/mach-generic/bigsmp.c
index ef7a6e6fcb9f..33d9f93557ba 100644
--- a/arch/i386/mach-generic/bigsmp.c
+++ b/arch/i386/mach-generic/bigsmp.c
@@ -5,6 +5,7 @@
 #define APIC_DEFINITION 1
 #include <linux/threads.h>
 #include <linux/cpumask.h>
+#include <asm/smp.h>
 #include <asm/mpspec.h>
 #include <asm/genapic.h>
 #include <asm/fixmap.h>
diff --git a/arch/i386/mach-generic/es7000.c b/arch/i386/mach-generic/es7000.c
index 845cdd0b3593..aa144d82334d 100644
--- a/arch/i386/mach-generic/es7000.c
+++ b/arch/i386/mach-generic/es7000.c
@@ -4,6 +4,7 @@
 #define APIC_DEFINITION 1
 #include <linux/threads.h>
 #include <linux/cpumask.h>
+#include <asm/smp.h>
 #include <asm/mpspec.h>
 #include <asm/genapic.h>
 #include <asm/fixmap.h>
diff --git a/arch/i386/mach-generic/probe.c b/arch/i386/mach-generic/probe.c
index bcd1bcfaa723..793d1b473251 100644
--- a/arch/i386/mach-generic/probe.c
+++ b/arch/i386/mach-generic/probe.c
@@ -119,7 +119,9 @@ int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
         return 0;       
 }
 
+#ifdef CONFIG_SMP
 int hard_smp_processor_id(void)
 {
         return genapic->get_apic_id(*(unsigned long *)(APIC_BASE+APIC_ID));
 }
+#endif
diff --git a/arch/i386/mach-generic/summit.c b/arch/i386/mach-generic/summit.c
index b73501ddd653..f7e5d66648dc 100644
--- a/arch/i386/mach-generic/summit.c
+++ b/arch/i386/mach-generic/summit.c
@@ -4,6 +4,7 @@
 #define APIC_DEFINITION 1
 #include <linux/threads.h>
 #include <linux/cpumask.h>
+#include <asm/smp.h>
 #include <asm/mpspec.h>
 #include <asm/genapic.h>
 #include <asm/fixmap.h>
diff --git a/include/asm-i386/genapic.h b/include/asm-i386/genapic.h
index b3783a32abee..8ffbb0f07457 100644
--- a/include/asm-i386/genapic.h
+++ b/include/asm-i386/genapic.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_GENAPIC_H
 #define _ASM_GENAPIC_H 1
 
+#include <asm/mpspec.h>
+
 /*
  * Generic APIC driver interface.
  *
@@ -63,14 +65,25 @@ struct genapic {
         unsigned (*get_apic_id)(unsigned long x);
         unsigned long apic_id_mask;
         unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
-        
+
+#ifdef CONFIG_SMP
         /* ipi */
         void (*send_IPI_mask)(cpumask_t mask, int vector);
         void (*send_IPI_allbutself)(int vector);
         void (*send_IPI_all)(int vector);
+#endif
 }; 
 
-#define APICFUNC(x) .x = x
+#define APICFUNC(x) .x = x,
+
+/* More functions could be probably marked IPIFUNC and save some space
+   in UP GENERICARCH kernels, but I don't have the nerve right now
+   to untangle this mess. -AK  */
+#ifdef CONFIG_SMP
+#define IPIFUNC(x) APICFUNC(x)
+#else
+#define IPIFUNC(x)
+#endif
 
 #define APIC_INIT(aname, aprobe) { \
         .name = aname, \
@@ -80,33 +93,33 @@ struct genapic {
         .no_balance_irq = NO_BALANCE_IRQ, \
         .ESR_DISABLE = esr_disable, \
         .apic_destination_logical = APIC_DEST_LOGICAL, \
-        APICFUNC(apic_id_registered), \
-        APICFUNC(target_cpus), \
-        APICFUNC(check_apicid_used), \
-        APICFUNC(check_apicid_present), \
-        APICFUNC(init_apic_ldr), \
-        APICFUNC(ioapic_phys_id_map), \
-        APICFUNC(clustered_apic_check), \
-        APICFUNC(multi_timer_check), \
-        APICFUNC(apicid_to_node), \
-        APICFUNC(cpu_to_logical_apicid), \
-        APICFUNC(cpu_present_to_apicid), \
-        APICFUNC(apicid_to_cpu_present), \
-        APICFUNC(mpc_apic_id), \
-        APICFUNC(setup_portio_remap), \
-        APICFUNC(check_phys_apicid_present), \
-        APICFUNC(mpc_oem_bus_info), \
-        APICFUNC(mpc_oem_pci_bus), \
-        APICFUNC(mps_oem_check), \
-        APICFUNC(get_apic_id), \
+        APICFUNC(apic_id_registered) \
+        APICFUNC(target_cpus) \
+        APICFUNC(check_apicid_used) \
+        APICFUNC(check_apicid_present) \
+        APICFUNC(init_apic_ldr) \
+        APICFUNC(ioapic_phys_id_map) \
+        APICFUNC(clustered_apic_check) \
+        APICFUNC(multi_timer_check) \
+        APICFUNC(apicid_to_node) \
+        APICFUNC(cpu_to_logical_apicid) \
+        APICFUNC(cpu_present_to_apicid) \
+        APICFUNC(apicid_to_cpu_present) \
+        APICFUNC(mpc_apic_id) \
+        APICFUNC(setup_portio_remap) \
+        APICFUNC(check_phys_apicid_present) \
+        APICFUNC(mpc_oem_bus_info) \
+        APICFUNC(mpc_oem_pci_bus) \
+        APICFUNC(mps_oem_check) \
+        APICFUNC(get_apic_id) \
         .apic_id_mask = APIC_ID_MASK, \
-        APICFUNC(cpu_mask_to_apicid), \
-        APICFUNC(acpi_madt_oem_check), \
-        APICFUNC(send_IPI_mask), \
-        APICFUNC(send_IPI_allbutself), \
-        APICFUNC(send_IPI_all), \
-        APICFUNC(enable_apic_mode), \
-        APICFUNC(phys_pkg_id), \
+        APICFUNC(cpu_mask_to_apicid) \
+        APICFUNC(acpi_madt_oem_check) \
+        IPIFUNC(send_IPI_mask) \
+        IPIFUNC(send_IPI_allbutself) \
+        IPIFUNC(send_IPI_all) \
+        APICFUNC(enable_apic_mode) \
+        APICFUNC(phys_pkg_id) \
         }
 
 extern struct genapic *genapic;
diff --git a/include/asm-i386/mach-es7000/mach_apic.h b/include/asm-i386/mach-es7000/mach_apic.h
index b5f3f0d0b2bc..26333685a7fb 100644
--- a/include/asm-i386/mach-es7000/mach_apic.h
+++ b/include/asm-i386/mach-es7000/mach_apic.h
@@ -123,9 +123,13 @@ extern u8 cpu_2_logical_apicid[];
 /* Mapping from cpu number to logical apicid */
 static inline int cpu_to_logical_apicid(int cpu)
 {
+#ifdef CONFIG_SMP
        if (cpu >= NR_CPUS)
                return BAD_APICID;
        return (int)cpu_2_logical_apicid[cpu];
+#else
+        return logical_smp_processor_id();
+#endif
 }
 
 static inline int mpc_apic_id(struct mpc_config_processor *m, struct mpc_config_translation *unused)
diff --git a/include/asm-i386/mach-summit/mach_apic.h b/include/asm-i386/mach-summit/mach_apic.h
index 9fd073286289..a81b05961595 100644
--- a/include/asm-i386/mach-summit/mach_apic.h
+++ b/include/asm-i386/mach-summit/mach_apic.h
@@ -46,10 +46,12 @@ extern u8 cpu_2_logical_apicid[];
 static inline void init_apic_ldr(void)
 {
         unsigned long val, id;
-        int i, count;
-        u8 lid;
+        int count = 0;
         u8 my_id = (u8)hard_smp_processor_id();
         u8 my_cluster = (u8)apicid_cluster(my_id);
+#ifdef CONFIG_SMP
+        u8 lid;
+        int i;
 
         /* Create logical APIC IDs by counting CPUs already in cluster. */
         for (count = 0, i = NR_CPUS; --i >= 0; ) {
@@ -57,6 +59,7 @@ static inline void init_apic_ldr(void)
                 if (lid != BAD_APICID && apicid_cluster(lid) == my_cluster)
                         ++count;
         }
+#endif
         /* We only have a 4 wide bitmap in cluster mode.  If a deranged
          * BIOS puts 5 CPUs in one APIC cluster, we're hosed. */
         BUG_ON(count >= XAPIC_DEST_CPUS_SHIFT);
@@ -91,9 +94,13 @@ static inline int apicid_to_node(int logical_apicid)
 /* Mapping from cpu number to logical apicid */
 static inline int cpu_to_logical_apicid(int cpu)
 {
+#ifdef CONFIG_SMP
        if (cpu >= NR_CPUS)
                return BAD_APICID;
         return (int)cpu_2_logical_apicid[cpu];
+#else
+        return logical_smp_processor_id();
+#endif
 }
 
 static inline int cpu_present_to_apicid(int mps_cpu)
diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h
index 142d10e34ade..f87826039a51 100644
--- a/include/asm-i386/smp.h
+++ b/include/asm-i386/smp.h
@@ -80,17 +80,11 @@ static inline int hard_smp_processor_id(void)
         return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
 }
 #endif
-
-static __inline int logical_smp_processor_id(void)
-{
-        /* we don't want to mark this access volatile - bad code generation */
-        return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
-}
-
 #endif
 
 extern int __cpu_disable(void);
 extern void __cpu_die(unsigned int cpu);
+
 #endif /* !__ASSEMBLY__ */
 
 #else /* CONFIG_SMP */
@@ -100,4 +94,15 @@ extern void __cpu_die(unsigned int cpu);
 #define NO_PROC_ID              0xFF            /* No processor magic marker */
 
 #endif
+
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_X86_LOCAL_APIC
+static __inline int logical_smp_processor_id(void)
+{
+        /* we don't want to mark this access volatile - bad code generation */
+        return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
+}
+#endif
+#endif
+
 #endif