arch/x86/mach-generic/numaq.c

   1 /*
   2  * APIC driver for the IBM NUMAQ 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/numaq/apicdef.h>
  15 #include <linux/smp.h>
  16 #include <asm/numaq/apic.h>
  17 #include <asm/numaq/ipi.h>
  18 #include <asm/numaq/mpparse.h>
  19 #include <asm/numaq/wakecpu.h>
  20 #include <asm/numaq.h>
  21
  22 static int __numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
  23 {
  24         numaq_mps_oem_check(mpc, oem, productid);
  25         return found_numaq;
  26 }
  27
  28 static int probe_numaq(void)
  29 {
  30         /* already know from get_memcfg_numaq() */
  31         return found_numaq;
  32 }
  33
  34 static void numaq_vector_allocation_domain(int cpu, cpumask_t *retmask)
  35 {
  36         /* Careful. Some cpus do not strictly honor the set of cpus
  37          * specified in the interrupt destination when using lowest
  38          * priority interrupt delivery mode.
  39          *
  40          * In particular there was a hyperthreading cpu observed to
  41          * deliver interrupts to the wrong hyperthread when only one
  42          * hyperthread was specified in the interrupt desitination.
  43          */
  44         *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
  45 }
  46
  47 static void numaq_setup_portio_remap(void)
  48 {
  49         int num_quads = num_online_nodes();
  50
  51         if (num_quads <= 1)
  52                 return;
  53
  54         printk("Remapping cross-quad port I/O for %d quads\n", num_quads);
  55         xquad_portio = ioremap(XQUAD_PORTIO_BASE, num_quads*XQUAD_PORTIO_QUAD);
  56         printk("xquad_portio vaddr 0x%08lx, len %08lx\n",
  57                 (u_long) xquad_portio, (u_long) num_quads*XQUAD_PORTIO_QUAD);
  58 }
  59
  60 struct genapic apic_numaq = {
  61
  62         .name                           = "NUMAQ",
  63         .probe                          = probe_numaq,
  64         .acpi_madt_oem_check            = NULL,
  65         .apic_id_registered             = numaq_apic_id_registered,
  66
  67         .irq_delivery_mode              = dest_LowestPrio,
  68         /* physical delivery on LOCAL quad: */
  69         .irq_dest_mode                  = 0,
  70
  71         .target_cpus                    = numaq_target_cpus,
  72         .disable_esr                    = 1,
  73         .dest_logical                   = APIC_DEST_LOGICAL,
  74         .check_apicid_used              = numaq_check_apicid_used,
  75         .check_apicid_present           = numaq_check_apicid_present,
  76
  77         .vector_allocation_domain       = numaq_vector_allocation_domain,
  78         .init_apic_ldr                  = numaq_init_apic_ldr,
  79
  80         .ioapic_phys_id_map             = numaq_ioapic_phys_id_map,
  81         .setup_apic_routing             = numaq_setup_apic_routing,
  82         .multi_timer_check              = numaq_multi_timer_check,
  83         .apicid_to_node                 = numaq_apicid_to_node,
  84         .cpu_to_logical_apicid          = numaq_cpu_to_logical_apicid,
  85         .cpu_present_to_apicid          = numaq_cpu_present_to_apicid,
  86         .apicid_to_cpu_present          = numaq_apicid_to_cpu_present,
  87         .setup_portio_remap             = numaq_setup_portio_remap,
  88         .check_phys_apicid_present      = numaq_check_phys_apicid_present,
  89         .enable_apic_mode               = NULL,
  90         .phys_pkg_id                    = numaq_phys_pkg_id,
  91         .mps_oem_check                  = __numaq_mps_oem_check,
  92
  93         .get_apic_id                    = numaq_get_apic_id,
  94         .set_apic_id                    = NULL,
  95         .apic_id_mask                   = 0x0F << 24,
  96
  97         .cpu_mask_to_apicid             = numaq_cpu_mask_to_apicid,
  98         .cpu_mask_to_apicid_and         = numaq_cpu_mask_to_apicid_and,
  99
 100         .send_IPI_mask                  = numaq_send_IPI_mask,
 101         .send_IPI_mask_allbutself       = NULL,
 102         .send_IPI_allbutself            = numaq_send_IPI_allbutself,
 103         .send_IPI_all                   = numaq_send_IPI_all,
 104         .send_IPI_self                  = NULL,
 105
 106         .wakeup_cpu                     = NULL,
 107         .trampoline_phys_low            = NUMAQ_TRAMPOLINE_PHYS_LOW,
 108         .trampoline_phys_high           = NUMAQ_TRAMPOLINE_PHYS_HIGH,
 109
 110         /* We don't do anything here because we use NMI's to boot instead */
 111         .wait_for_init_deassert         = NULL,
 112
 113         .smp_callin_clear_local_apic    = numaq_smp_callin_clear_local_apic,
 114         .store_NMI_vector               = numaq_store_NMI_vector,
 115         .inquire_remote_apic            = inquire_remote_apic,
 116 };