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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 #include <asm/mach-default/mach_mpparse.h>
  20
  21 static int dmi_bigsmp; /* can be set by dmi scanners */
  22
  23 static int hp_ht_bigsmp(const struct dmi_system_id *d)
  24 {
  25         printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
  26         dmi_bigsmp = 1;
  27         return 0;
  28 }
  29
  30
  31 static const struct dmi_system_id bigsmp_dmi_table[] = {
  32         { hp_ht_bigsmp, "HP ProLiant DL760 G2",
  33         { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  34         DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
  35         },
  36
  37         { hp_ht_bigsmp, "HP ProLiant DL740",
  38         { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  39         DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
  40         },
  41          { }
  42 };
  43
  44 static void bigsmp_vector_allocation_domain(int cpu, cpumask_t *retmask)
  45 {
  46         cpus_clear(*retmask);
  47         cpu_set(cpu, *retmask);
  48 }
  49
  50 static int probe_bigsmp(void)
  51 {
  52         if (def_to_bigsmp)
  53                 dmi_bigsmp = 1;
  54         else
  55                 dmi_check_system(bigsmp_dmi_table);
  56         return dmi_bigsmp;
  57 }
  58
  59 struct genapic apic_bigsmp = {
  60
  61         .name                           = "bigsmp",
  62         .probe                          = probe_bigsmp,
  63         .acpi_madt_oem_check            = NULL,
  64         .apic_id_registered             = bigsmp_apic_id_registered,
  65
  66         .irq_delivery_mode              = dest_Fixed,
  67         /* phys delivery to target CPU: */
  68         .irq_dest_mode                  = 0,
  69
  70         .target_cpus                    = bigsmp_target_cpus,
  71         .disable_esr                    = 1,
  72         .dest_logical                   = 0,
  73         .check_apicid_used              = bigsmp_check_apicid_used,
  74         .check_apicid_present           = bigsmp_check_apicid_present,
  75
  76         .vector_allocation_domain       = bigsmp_vector_allocation_domain,
  77         .init_apic_ldr                  = bigsmp_init_apic_ldr,
  78
  79         .ioapic_phys_id_map             = bigsmp_ioapic_phys_id_map,
  80         .setup_apic_routing             = bigsmp_setup_apic_routing,
  81         .multi_timer_check              = NULL,
  82         .apicid_to_node                 = bigsmp_apicid_to_node,
  83         .cpu_to_logical_apicid          = bigsmp_cpu_to_logical_apicid,
  84         .cpu_present_to_apicid          = bigsmp_cpu_present_to_apicid,
  85         .apicid_to_cpu_present          = bigsmp_apicid_to_cpu_present,
  86         .setup_portio_remap             = NULL,
  87         .check_phys_apicid_present      = bigsmp_check_phys_apicid_present,
  88         .enable_apic_mode               = NULL,
  89         .phys_pkg_id                    = bigsmp_phys_pkg_id,
  90         .mps_oem_check                  = NULL,
  91
  92         .get_apic_id                    = bigsmp_get_apic_id,
  93         .set_apic_id                    = NULL,
  94         .apic_id_mask                   = 0xFF << 24,
  95
  96         .cpu_mask_to_apicid             = bigsmp_cpu_mask_to_apicid,
  97         .cpu_mask_to_apicid_and         = bigsmp_cpu_mask_to_apicid_and,
  98
  99         .send_IPI_mask                  = default_send_IPI_mask,
 100         .send_IPI_mask_allbutself       = NULL,
 101         .send_IPI_allbutself            = bigsmp_send_IPI_allbutself,
 102         .send_IPI_all                   = bigsmp_send_IPI_all,
 103         .send_IPI_self                  = NULL,
 104
 105         .wakeup_cpu                     = NULL,
 106         .trampoline_phys_low            = DEFAULT_TRAMPOLINE_PHYS_LOW,
 107         .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
 108
 109         .wait_for_init_deassert         = default_wait_for_init_deassert,
 110
 111         .smp_callin_clear_local_apic    = NULL,
 112         .store_NMI_vector               = NULL,
 113         .inquire_remote_apic            = default_inquire_remote_apic,
 114 };