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   1 /*
   2  * APIC driver for the Unisys ES7000 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/es7000/apicdef.h>
  15 #include <linux/smp.h>
  16 #include <asm/es7000/apic.h>
  17 #include <asm/es7000/ipi.h>
  18 #include <asm/es7000/mpparse.h>
  19 #include <asm/mach-default/mach_wakecpu.h>
  20
  21 void __init es7000_update_genapic_to_cluster(void)
  22 {
  23         apic->target_cpus = target_cpus_cluster;
  24         apic->int_delivery_mode = INT_DELIVERY_MODE_CLUSTER;
  25         apic->int_dest_mode = INT_DEST_MODE_CLUSTER;
  26         apic->no_balance_irq = NO_BALANCE_IRQ_CLUSTER;
  27
  28         apic->init_apic_ldr = init_apic_ldr_cluster;
  29
  30         apic->cpu_mask_to_apicid = cpu_mask_to_apicid_cluster;
  31 }
  32
  33 static int probe_es7000(void)
  34 {
  35         /* probed later in mptable/ACPI hooks */
  36         return 0;
  37 }
  38
  39 extern void es7000_sw_apic(void);
  40 static void __init enable_apic_mode(void)
  41 {
  42         es7000_sw_apic();
  43         return;
  44 }
  45
  46 static __init int
  47 mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
  48 {
  49         if (mpc->oemptr) {
  50                 struct mpc_oemtable *oem_table =
  51                         (struct mpc_oemtable *)mpc->oemptr;
  52                 if (!strncmp(oem, "UNISYS", 6))
  53                         return parse_unisys_oem((char *)oem_table);
  54         }
  55         return 0;
  56 }
  57
  58 #ifdef CONFIG_ACPI
  59 /* Hook from generic ACPI tables.c */
  60 static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  61 {
  62         unsigned long oem_addr = 0;
  63         int check_dsdt;
  64         int ret = 0;
  65
  66         /* check dsdt at first to avoid clear fix_map for oem_addr */
  67         check_dsdt = es7000_check_dsdt();
  68
  69         if (!find_unisys_acpi_oem_table(&oem_addr)) {
  70                 if (check_dsdt)
  71                         ret = parse_unisys_oem((char *)oem_addr);
  72                 else {
  73                         setup_unisys();
  74                         ret = 1;
  75                 }
  76                 /*
  77                  * we need to unmap it
  78                  */
  79                 unmap_unisys_acpi_oem_table(oem_addr);
  80         }
  81         return ret;
  82 }
  83 #else
  84 static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  85 {
  86         return 0;
  87 }
  88 #endif
  89
  90 static void vector_allocation_domain(int cpu, cpumask_t *retmask)
  91 {
  92         /* Careful. Some cpus do not strictly honor the set of cpus
  93          * specified in the interrupt destination when using lowest
  94          * priority interrupt delivery mode.
  95          *
  96          * In particular there was a hyperthreading cpu observed to
  97          * deliver interrupts to the wrong hyperthread when only one
  98          * hyperthread was specified in the interrupt desitination.
  99          */
 100         *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
 101 }
 102
 103 struct genapic apic_es7000 = {
 104
 105         .name                           = "es7000",
 106         .probe                          = probe_es7000,
 107         .acpi_madt_oem_check            = es7000_acpi_madt_oem_check,
 108         .apic_id_registered             = es7000_apic_id_registered,
 109
 110         .int_delivery_mode              = INT_DELIVERY_MODE,
 111         .int_dest_mode                  = INT_DEST_MODE,
 112
 113         .target_cpus                    = target_cpus,
 114         .ESR_DISABLE                    = esr_disable,
 115         .apic_destination_logical       = APIC_DEST_LOGICAL,
 116         .check_apicid_used              = check_apicid_used,
 117         .check_apicid_present           = check_apicid_present,
 118
 119         .no_balance_irq                 = NO_BALANCE_IRQ,
 120         .no_ioapic_check                = 0,
 121
 122         .vector_allocation_domain       = vector_allocation_domain,
 123         .init_apic_ldr                  = init_apic_ldr,
 124
 125         .ioapic_phys_id_map             = ioapic_phys_id_map,
 126         .setup_apic_routing             = setup_apic_routing,
 127         .multi_timer_check              = multi_timer_check,
 128         .apicid_to_node                 = apicid_to_node,
 129         .cpu_to_logical_apicid          = cpu_to_logical_apicid,
 130         .cpu_present_to_apicid          = cpu_present_to_apicid,
 131         .apicid_to_cpu_present          = apicid_to_cpu_present,
 132         .setup_portio_remap             = setup_portio_remap,
 133         .check_phys_apicid_present      = check_phys_apicid_present,
 134         .enable_apic_mode               = enable_apic_mode,
 135         .phys_pkg_id                    = phys_pkg_id,
 136         .mps_oem_check                  = mps_oem_check,
 137
 138         .get_apic_id                    = get_apic_id,
 139         .set_apic_id                    = NULL,
 140         .apic_id_mask                   = APIC_ID_MASK,
 141
 142         .cpu_mask_to_apicid             = cpu_mask_to_apicid,
 143         .cpu_mask_to_apicid_and         = cpu_mask_to_apicid_and,
 144
 145         .send_IPI_mask                  = send_IPI_mask,
 146         .send_IPI_mask_allbutself       = NULL,
 147         .send_IPI_allbutself            = send_IPI_allbutself,
 148         .send_IPI_all                   = send_IPI_all,
 149         .send_IPI_self                  = NULL,
 150
 151         .wakeup_cpu                     = NULL,
 152         .trampoline_phys_low            = TRAMPOLINE_PHYS_LOW,
 153         .trampoline_phys_high           = TRAMPOLINE_PHYS_HIGH,
 154         .wait_for_init_deassert         = wait_for_init_deassert,
 155         .smp_callin_clear_local_apic    = smp_callin_clear_local_apic,
 156         .store_NMI_vector               = store_NMI_vector,
 157         .restore_NMI_vector             = restore_NMI_vector,
 158         .inquire_remote_apic            = inquire_remote_apic,
 159 };