arch/x86/mach-generic/numaq.c

   1 /*
   2  * APIC driver for the IBM NUMAQ chipset.
   3  */
   4 #define APIC_DEFINITION 1
   5 #include <linux/threads.h>
   6 #include <linux/cpumask.h>
   7 #include <asm/mpspec.h>
   8 #include <asm/genapic.h>
   9 #include <asm/fixmap.h>
  10 #include <asm/apicdef.h>
  11 #include <linux/kernel.h>
  12 #include <linux/string.h>
  13 #include <linux/init.h>
  14 #include <asm/numaq/apicdef.h>
  15 #include <linux/smp.h>
  16 #include <asm/numaq/apic.h>
  17 #include <asm/numaq/ipi.h>
  18 #include <asm/numaq/mpparse.h>
  19 #include <asm/numaq/wakecpu.h>
  20 #include <asm/numaq.h>
  21
  22 static int mps_oem_check(struct mp_config_table *mpc, char *oem,
  23                 char *productid)
  24 {
  25         numaq_mps_oem_check(mpc, oem, productid);
  26         return found_numaq;
  27 }
  28
  29 static int probe_numaq(void)
  30 {
  31         /* already know from get_memcfg_numaq() */
  32         return found_numaq;
  33 }
  34
  35 /* Hook from generic ACPI tables.c */
  36 static int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  37 {
  38         return 0;
  39 }
  40
  41 static cpumask_t vector_allocation_domain(int cpu)
  42 {
  43         /* Careful. Some cpus do not strictly honor the set of cpus
  44          * specified in the interrupt destination when using lowest
  45          * priority interrupt delivery mode.
  46          *
  47          * In particular there was a hyperthreading cpu observed to
  48          * deliver interrupts to the wrong hyperthread when only one
  49          * hyperthread was specified in the interrupt desitination.
  50          */
  51         cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
  52         return domain;
  53 }
  54
  55 struct genapic apic_numaq = APIC_INIT("NUMAQ", probe_numaq);