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 mpc_table *mpc, char *oem, char *productid)
  23 {
  24         numaq_mps_oem_check(mpc, oem, productid);
  25         return found_numaq;
  26 }
  27
  28 static int probe_numaq(void)
  29 {
  30         /* already know from get_memcfg_numaq() */
  31         return found_numaq;
  32 }
  33
  34 /* Hook from generic ACPI tables.c */
  35 static int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  36 {
  37         return 0;
  38 }
  39
  40 static void vector_allocation_domain(int cpu, cpumask_t *retmask)
  41 {
  42         /* Careful. Some cpus do not strictly honor the set of cpus
  43          * specified in the interrupt destination when using lowest
  44          * priority interrupt delivery mode.
  45          *
  46          * In particular there was a hyperthreading cpu observed to
  47          * deliver interrupts to the wrong hyperthread when only one
  48          * hyperthread was specified in the interrupt desitination.
  49          */
  50         *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
  51 }
  52
  53 struct genapic apic_numaq = APIC_INIT("NUMAQ", probe_numaq);