diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 21:05:42 -0400 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-22 22:55:20 -0700 |
commit | bb8985586b7a906e116db835c64773b7a7d51663 (patch) | |
tree | de93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/mach-default/mach_apic.h | |
parent | 8ede0bdb63305d3353efd97e9af6210afb05734e (diff) |
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/mach-default/mach_apic.h')
-rw-r--r-- | arch/x86/include/asm/mach-default/mach_apic.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mach-default/mach_apic.h b/arch/x86/include/asm/mach-default/mach_apic.h new file mode 100644 index 00000000000..3c66f2cdaec --- /dev/null +++ b/arch/x86/include/asm/mach-default/mach_apic.h @@ -0,0 +1,156 @@ +#ifndef ASM_X86__MACH_DEFAULT__MACH_APIC_H +#define ASM_X86__MACH_DEFAULT__MACH_APIC_H + +#ifdef CONFIG_X86_LOCAL_APIC + +#include <mach_apicdef.h> +#include <asm/smp.h> + +#define APIC_DFR_VALUE (APIC_DFR_FLAT) + +static inline cpumask_t target_cpus(void) +{ +#ifdef CONFIG_SMP + return cpu_online_map; +#else + return cpumask_of_cpu(0); +#endif +} + +#define NO_BALANCE_IRQ (0) +#define esr_disable (0) + +#ifdef CONFIG_X86_64 +#include <asm/genapic.h> +#define INT_DELIVERY_MODE (genapic->int_delivery_mode) +#define INT_DEST_MODE (genapic->int_dest_mode) +#define TARGET_CPUS (genapic->target_cpus()) +#define apic_id_registered (genapic->apic_id_registered) +#define init_apic_ldr (genapic->init_apic_ldr) +#define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid) +#define phys_pkg_id (genapic->phys_pkg_id) +#define vector_allocation_domain (genapic->vector_allocation_domain) +#define read_apic_id() (GET_APIC_ID(apic_read(APIC_ID))) +#define send_IPI_self (genapic->send_IPI_self) +extern void setup_apic_routing(void); +#else +#define INT_DELIVERY_MODE dest_LowestPrio +#define INT_DEST_MODE 1 /* logical delivery broadcast to all procs */ +#define TARGET_CPUS (target_cpus()) +/* + * Set up the logical destination ID. + * + * Intel recommends to set DFR, LDR and TPR before enabling + * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel + * document number 292116). So here it goes... + */ +static inline void init_apic_ldr(void) +{ + unsigned long val; + + apic_write(APIC_DFR, APIC_DFR_VALUE); + val = apic_read(APIC_LDR) & ~APIC_LDR_MASK; + val |= SET_APIC_LOGICAL_ID(1UL << smp_processor_id()); + apic_write(APIC_LDR, val); +} + +static inline int apic_id_registered(void) +{ + return physid_isset(read_apic_id(), phys_cpu_present_map); +} + +static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask) +{ + return cpus_addr(cpumask)[0]; +} + +static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb) +{ + return cpuid_apic >> index_msb; +} + +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) +{ +#ifdef CONFIG_SMP + return apicid_2_node[hard_smp_processor_id()]; +#else + return 0; +#endif +} + +static inline cpumask_t vector_allocation_domain(int cpu) +{ + /* Careful. Some cpus do not strictly honor the set of cpus + * specified in the interrupt destination when using lowest + * priority interrupt delivery mode. + * + * In particular there was a hyperthreading cpu observed to + * deliver interrupts to the wrong hyperthread when only one + * hyperthread was specified in the interrupt desitination. + */ + cpumask_t domain = { { [0] = APIC_ALL_CPUS, } }; + return domain; +} +#endif + +static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid) +{ + return physid_isset(apicid, bitmap); +} + +static inline unsigned long check_apicid_present(int bit) +{ + return physid_isset(bit, phys_cpu_present_map); +} + +static inline physid_mask_t ioapic_phys_id_map(physid_mask_t phys_map) +{ + return phys_map; +} + +static inline int multi_timer_check(int apic, int irq) +{ + return 0; +} + +/* Mapping from cpu number to logical apicid */ +static inline int cpu_to_logical_apicid(int cpu) +{ + return 1 << cpu; +} + +static inline int cpu_present_to_apicid(int mps_cpu) +{ + if (mps_cpu < NR_CPUS && cpu_present(mps_cpu)) + return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu); + else + return BAD_APICID; +} + +static inline physid_mask_t apicid_to_cpu_present(int phys_apicid) +{ + return physid_mask_of_physid(phys_apicid); +} + +static inline void setup_portio_remap(void) +{ +} + +static inline int check_phys_apicid_present(int boot_cpu_physical_apicid) +{ + return physid_isset(boot_cpu_physical_apicid, phys_cpu_present_map); +} + +static inline void enable_apic_mode(void) +{ +} +#endif /* CONFIG_X86_LOCAL_APIC */ +#endif /* ASM_X86__MACH_DEFAULT__MACH_APIC_H */ |