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   1 /*
   2  * APIC driver for "bigsmp" XAPIC machines with more than 8 virtual CPUs.
   3  * Drives the local APIC in "clustered mode".
   4  */
   5 #define APIC_DEFINITION 1
   6 #include <linux/threads.h>
   7 #include <linux/cpumask.h>
   8 #include <asm/mpspec.h>
   9 #include <asm/genapic.h>
  10 #include <asm/fixmap.h>
  11 #include <asm/apicdef.h>
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/dmi.h>
  15 #include <asm/bigsmp/apicdef.h>
  16 #include <linux/smp.h>
  17 #include <asm/bigsmp/apic.h>
  18 #include <asm/bigsmp/ipi.h>
  19
  20 static int dmi_bigsmp; /* can be set by dmi scanners */
  21
  22 static int hp_ht_bigsmp(const struct dmi_system_id *d)
  23 {
  24         printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
  25         dmi_bigsmp = 1;
  26         return 0;
  27 }
  28
  29
  30 static const struct dmi_system_id bigsmp_dmi_table[] = {
  31         { hp_ht_bigsmp, "HP ProLiant DL760 G2",
  32         { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  33         DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
  34         },
  35
  36         { hp_ht_bigsmp, "HP ProLiant DL740",
  37         { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  38         DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
  39         },
  40          { }
  41 };
  42
  43 static void bigsmp_vector_allocation_domain(int cpu, cpumask_t *retmask)
  44 {
  45         cpus_clear(*retmask);
  46         cpu_set(cpu, *retmask);
  47 }
  48
  49 static int probe_bigsmp(void)
  50 {
  51         if (def_to_bigsmp)
  52                 dmi_bigsmp = 1;
  53         else
  54                 dmi_check_system(bigsmp_dmi_table);
  55         return dmi_bigsmp;
  56 }
  57
  58 struct genapic apic_bigsmp = {
  59
  60         .name                           = "bigsmp",
  61         .probe                          = probe_bigsmp,
  62         .acpi_madt_oem_check            = NULL,
  63         .apic_id_registered             = bigsmp_apic_id_registered,
  64
  65         .irq_delivery_mode              = dest_Fixed,
  66         /* phys delivery to target CPU: */
  67         .irq_dest_mode                  = 0,
  68
  69         .target_cpus                    = bigsmp_target_cpus,
  70         .disable_esr                    = 1,
  71         .dest_logical                   = 0,
  72         .check_apicid_used              = bigsmp_check_apicid_used,
  73         .check_apicid_present           = bigsmp_check_apicid_present,
  74
  75         .vector_allocation_domain       = bigsmp_vector_allocation_domain,
  76         .init_apic_ldr                  = bigsmp_init_apic_ldr,
  77
  78         .ioapic_phys_id_map             = bigsmp_ioapic_phys_id_map,
  79         .setup_apic_routing             = bigsmp_setup_apic_routing,
  80         .multi_timer_check              = NULL,
  81         .apicid_to_node                 = bigsmp_apicid_to_node,
  82         .cpu_to_logical_apicid          = bigsmp_cpu_to_logical_apicid,
  83         .cpu_present_to_apicid          = bigsmp_cpu_present_to_apicid,
  84         .apicid_to_cpu_present          = bigsmp_apicid_to_cpu_present,
  85         .setup_portio_remap             = NULL,
  86         .check_phys_apicid_present      = bigsmp_check_phys_apicid_present,
  87         .enable_apic_mode               = NULL,
  88         .phys_pkg_id                    = bigsmp_phys_pkg_id,
  89         .mps_oem_check                  = NULL,
  90
  91         .get_apic_id                    = bigsmp_get_apic_id,
  92         .set_apic_id                    = NULL,
  93         .apic_id_mask                   = 0xFF << 24,
  94
  95         .cpu_mask_to_apicid             = bigsmp_cpu_mask_to_apicid,
  96         .cpu_mask_to_apicid_and         = bigsmp_cpu_mask_to_apicid_and,
  97
  98         .send_IPI_mask                  = default_send_IPI_mask,
  99         .send_IPI_mask_allbutself       = NULL,
 100         .send_IPI_allbutself            = bigsmp_send_IPI_allbutself,
 101         .send_IPI_all                   = bigsmp_send_IPI_all,
 102         .send_IPI_self                  = NULL,
 103
 104         .wakeup_cpu                     = NULL,
 105         .trampoline_phys_low            = DEFAULT_TRAMPOLINE_PHYS_LOW,
 106         .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
 107
 108         .wait_for_init_deassert         = default_wait_for_init_deassert,
 109
 110         .smp_callin_clear_local_apic    = NULL,
 111         .store_NMI_vector               = NULL,
 112         .inquire_remote_apic            = default_inquire_remote_apic,
 113 };