arch/x86/mach-generic/es7000.c

   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->irq_delivery_mode = INT_DELIVERY_MODE_CLUSTER;
  25         apic->irq_dest_mode = INT_DEST_MODE_CLUSTER;
  26
  27         apic->init_apic_ldr = es7000_init_apic_ldr_cluster;
  28
  29         apic->cpu_mask_to_apicid = cpu_mask_to_apicid_cluster;
  30 }
  31
  32 static int probe_es7000(void)
  33 {
  34         /* probed later in mptable/ACPI hooks */
  35         return 0;
  36 }
  37
  38 extern void es7000_sw_apic(void);
  39 static void __init enable_apic_mode(void)
  40 {
  41         es7000_sw_apic();
  42         return;
  43 }
  44
  45 static __init int
  46 mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
  47 {
  48         if (mpc->oemptr) {
  49                 struct mpc_oemtable *oem_table =
  50                         (struct mpc_oemtable *)mpc->oemptr;
  51                 if (!strncmp(oem, "UNISYS", 6))
  52                         return parse_unisys_oem((char *)oem_table);
  53         }
  54         return 0;
  55 }
  56
  57 #ifdef CONFIG_ACPI
  58 /* Hook from generic ACPI tables.c */
  59 static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  60 {
  61         unsigned long oem_addr = 0;
  62         int check_dsdt;
  63         int ret = 0;
  64
  65         /* check dsdt at first to avoid clear fix_map for oem_addr */
  66         check_dsdt = es7000_check_dsdt();
  67
  68         if (!find_unisys_acpi_oem_table(&oem_addr)) {
  69                 if (check_dsdt)
  70                         ret = parse_unisys_oem((char *)oem_addr);
  71                 else {
  72                         setup_unisys();
  73                         ret = 1;
  74                 }
  75                 /*
  76                  * we need to unmap it
  77                  */
  78                 unmap_unisys_acpi_oem_table(oem_addr);
  79         }
  80         return ret;
  81 }
  82 #else
  83 static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  84 {
  85         return 0;
  86 }
  87 #endif
  88
  89 static void es7000_vector_allocation_domain(int cpu, cpumask_t *retmask)
  90 {
  91         /* Careful. Some cpus do not strictly honor the set of cpus
  92          * specified in the interrupt destination when using lowest
  93          * priority interrupt delivery mode.
  94          *
  95          * In particular there was a hyperthreading cpu observed to
  96          * deliver interrupts to the wrong hyperthread when only one
  97          * hyperthread was specified in the interrupt desitination.
  98          */
  99         *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
 100 }
 101
 102 struct genapic apic_es7000 = {
 103
 104         .name                           = "es7000",
 105         .probe                          = probe_es7000,
 106         .acpi_madt_oem_check            = es7000_acpi_madt_oem_check,
 107         .apic_id_registered             = es7000_apic_id_registered,
 108
 109         .irq_delivery_mode              = dest_Fixed,
 110         /* phys delivery to target CPUs: */
 111         .irq_dest_mode                  = 0,
 112
 113         .target_cpus                    = es7000_target_cpus,
 114         .disable_esr                    = 1,
 115         .dest_logical                   = 0,
 116         .check_apicid_used              = es7000_check_apicid_used,
 117         .check_apicid_present           = es7000_check_apicid_present,
 118
 119         .vector_allocation_domain       = es7000_vector_allocation_domain,
 120         .init_apic_ldr                  = es7000_init_apic_ldr,
 121
 122         .ioapic_phys_id_map             = es7000_ioapic_phys_id_map,
 123         .setup_apic_routing             = es7000_setup_apic_routing,
 124         .multi_timer_check              = NULL,
 125         .apicid_to_node                 = es7000_apicid_to_node,
 126         .cpu_to_logical_apicid          = es7000_cpu_to_logical_apicid,
 127         .cpu_present_to_apicid          = es7000_cpu_present_to_apicid,
 128         .apicid_to_cpu_present          = apicid_to_cpu_present,
 129         .setup_portio_remap             = setup_portio_remap,
 130         .check_phys_apicid_present      = check_phys_apicid_present,
 131         .enable_apic_mode               = enable_apic_mode,
 132         .phys_pkg_id                    = phys_pkg_id,
 133         .mps_oem_check                  = mps_oem_check,
 134
 135         .get_apic_id                    = get_apic_id,
 136         .set_apic_id                    = NULL,
 137         .apic_id_mask                   = APIC_ID_MASK,
 138
 139         .cpu_mask_to_apicid             = cpu_mask_to_apicid,
 140         .cpu_mask_to_apicid_and         = cpu_mask_to_apicid_and,
 141
 142         .send_IPI_mask                  = send_IPI_mask,
 143         .send_IPI_mask_allbutself       = NULL,
 144         .send_IPI_allbutself            = send_IPI_allbutself,
 145         .send_IPI_all                   = send_IPI_all,
 146         .send_IPI_self                  = NULL,
 147
 148         .wakeup_cpu                     = NULL,
 149         .trampoline_phys_low            = TRAMPOLINE_PHYS_LOW,
 150         .trampoline_phys_high           = TRAMPOLINE_PHYS_HIGH,
 151         .wait_for_init_deassert         = wait_for_init_deassert,
 152         .smp_callin_clear_local_apic    = smp_callin_clear_local_apic,
 153         .store_NMI_vector               = store_NMI_vector,
 154         .restore_NMI_vector             = restore_NMI_vector,
 155         .inquire_remote_apic            = inquire_remote_apic,
 156 };