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e7986739a7
Impact: cleanup, change parameter passing
* Change genapic interfaces to accept cpumask_t pointers where possible.
* Modify external callers to use cpumask_t pointers in function calls.
* Create new send_IPI_mask_allbutself which is the same as the
send_IPI_mask functions but removes smp_processor_id() from list.
This removes another common need for a temporary cpumask_t variable.
* Functions that used a temp cpumask_t variable for:
cpumask_t allbutme = cpu_online_map;
cpu_clear(smp_processor_id(), allbutme);
if (!cpus_empty(allbutme))
...
become:
if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu)))
...
* Other minor code optimizations (like using cpus_clear instead of
CPU_MASK_NONE, etc.)
Applies to linux-2.6.tip/master.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
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* APIC driver for the Unisys ES7000 chipset.
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*/
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#define APIC_DEFINITION 1
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/genapic.h>
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#include <asm/fixmap.h>
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#include <asm/apicdef.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <asm/es7000/apicdef.h>
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#include <linux/smp.h>
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#include <asm/es7000/apic.h>
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#include <asm/es7000/ipi.h>
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#include <asm/es7000/mpparse.h>
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#include <asm/mach-default/mach_wakecpu.h>
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void __init es7000_update_genapic_to_cluster(void)
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{
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genapic->target_cpus = target_cpus_cluster;
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genapic->int_delivery_mode = INT_DELIVERY_MODE_CLUSTER;
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genapic->int_dest_mode = INT_DEST_MODE_CLUSTER;
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genapic->no_balance_irq = NO_BALANCE_IRQ_CLUSTER;
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genapic->init_apic_ldr = init_apic_ldr_cluster;
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genapic->cpu_mask_to_apicid = cpu_mask_to_apicid_cluster;
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}
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static int probe_es7000(void)
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{
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/* probed later in mptable/ACPI hooks */
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return 0;
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}
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extern void es7000_sw_apic(void);
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static void __init enable_apic_mode(void)
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{
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es7000_sw_apic();
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return;
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}
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static __init int mps_oem_check(struct mp_config_table *mpc, char *oem,
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char *productid)
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{
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if (mpc->mpc_oemptr) {
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struct mp_config_oemtable *oem_table =
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(struct mp_config_oemtable *)mpc->mpc_oemptr;
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if (!strncmp(oem, "UNISYS", 6))
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return parse_unisys_oem((char *)oem_table);
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}
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return 0;
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}
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#ifdef CONFIG_ACPI
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/* Hook from generic ACPI tables.c */
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static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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unsigned long oem_addr = 0;
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int check_dsdt;
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int ret = 0;
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/* check dsdt at first to avoid clear fix_map for oem_addr */
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check_dsdt = es7000_check_dsdt();
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if (!find_unisys_acpi_oem_table(&oem_addr)) {
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if (check_dsdt)
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ret = parse_unisys_oem((char *)oem_addr);
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else {
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setup_unisys();
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ret = 1;
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}
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/*
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* we need to unmap it
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*/
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unmap_unisys_acpi_oem_table(oem_addr);
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}
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return ret;
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}
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#else
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static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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return 0;
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}
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#endif
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static void vector_allocation_domain(int cpu, cpumask_t *retmask)
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{
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/* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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*retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
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}
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struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000);
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