arch/ia64/kernel/acpi-processor.c

   1 /*
   2  * arch/ia64/kernel/acpi-processor.c
   3  *
   4  * Copyright (C) 2005 Intel Corporation
   5  *      Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
   6  *      - Added _PDC for platforms with Intel CPUs
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/acpi.h>
  13
  14 #include <acpi/processor.h>
  15 #include <asm/acpi.h>
  16
  17 static void init_intel_pdc(struct acpi_processor *pr)
  18 {
  19         u32 *buf = (u32 *)pr->pdc->pointer->buffer.pointer;
  20
  21         buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
  22
  23         return;
  24 }
  25
  26 /* Initialize _PDC data based on the CPU vendor */
  27 void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
  28 {
  29         init_intel_pdc(pr);
  30         return;
  31 }
  32
  33 EXPORT_SYMBOL(arch_acpi_processor_init_pdc);
  34
  35 void arch_acpi_processor_cleanup_pdc(struct acpi_processor *pr)
  36 {
  37         if (pr->pdc) {
  38                 kfree(pr->pdc->pointer->buffer.pointer);
  39                 kfree(pr->pdc->pointer);
  40                 kfree(pr->pdc);
  41                 pr->pdc = NULL;
  42         }
  43 }
  44
  45 EXPORT_SYMBOL(arch_acpi_processor_cleanup_pdc);