arch/mips/sgi-ip27/ip27-init.c

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This source file includes following definitions.
per_hub_init
per_cpu_init
get_nasid
get_compact_nodeid
plat_mem_setup
   1 /*
   2  * This file is subject to the terms and conditions of the GNU General
   3  * Public License.  See the file "COPYING" in the main directory of this
   4  * archive for more details.
   5  *
   6  * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
   7  * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
   8  */
   9 #include <linux/kernel.h>
  10 #include <linux/init.h>
  11 #include <linux/sched.h>
  12 #include <linux/smp.h>
  13 #include <linux/mm.h>
  14 #include <linux/export.h>
  15 #include <linux/cpumask.h>
  16 #include <asm/cpu.h>
  17 #include <asm/io.h>
  18 #include <asm/pgtable.h>
  19 #include <asm/time.h>
  20 #include <asm/sn/types.h>
  21 #include <asm/sn/sn0/addrs.h>
  22 #include <asm/sn/sn0/hubni.h>
  23 #include <asm/sn/sn0/hubio.h>
  24 #include <asm/sn/klconfig.h>
  25 #include <asm/sn/ioc3.h>
  26 #include <asm/mipsregs.h>
  27 #include <asm/sn/gda.h>
  28 #include <asm/sn/hub.h>
  29 #include <asm/sn/intr.h>
  30 #include <asm/current.h>
  31 #include <asm/processor.h>
  32 #include <asm/mmu_context.h>
  33 #include <asm/thread_info.h>
  34 #include <asm/sn/launch.h>
  35 #include <asm/sn/sn_private.h>
  36 #include <asm/sn/sn0/ip27.h>
  37 #include <asm/sn/mapped_kernel.h>
  38 
  39 #define CPU_NONE                (cpuid_t)-1
  40 
  41 static DECLARE_BITMAP(hub_init_mask, MAX_COMPACT_NODES);
  42 nasid_t master_nasid = INVALID_NASID;
  43 
  44 cnodeid_t       nasid_to_compact_node[MAX_NASIDS];
  45 nasid_t         compact_to_nasid_node[MAX_COMPACT_NODES];
  46 cnodeid_t       cpuid_to_compact_node[MAXCPUS];
  47 
  48 EXPORT_SYMBOL(nasid_to_compact_node);
  49 
  50 struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
  51 EXPORT_SYMBOL_GPL(sn_cpu_info);
  52 
  53 extern void pcibr_setup(cnodeid_t);
  54 
  55 static void per_hub_init(cnodeid_t cnode)
  56 {
  57         struct hub_data *hub = hub_data(cnode);
  58         nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
  59 
  60         cpumask_set_cpu(smp_processor_id(), &hub->h_cpus);
  61 
  62         if (test_and_set_bit(cnode, hub_init_mask))
  63                 return;
  64         /*
  65          * Set CRB timeout at 5ms, (< PI timeout of 10ms)
  66          */
  67         REMOTE_HUB_S(nasid, IIO_ICTP, 0x800);
  68         REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
  69 
  70         hub_rtc_init(cnode);
  71 
  72         if (nasid) {
  73                 /* copy exception handlers from first node to current node */
  74                 memcpy((void *)NODE_OFFSET_TO_K0(nasid, 0),
  75                        (void *)CKSEG0, 0x200);
  76                 __flush_cache_all();
  77                 /* switch to node local exception handlers */
  78                 REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_8K);
  79         }
  80 }
  81 
  82 void per_cpu_init(void)
  83 {
  84         int cpu = smp_processor_id();
  85         int slice = LOCAL_HUB_L(PI_CPU_NUM);
  86         cnodeid_t cnode = get_compact_nodeid();
  87         struct hub_data *hub = hub_data(cnode);
  88 
  89         if (test_and_set_bit(slice, &hub->slice_map))
  90                 return;
  91 
  92         clear_c0_status(ST0_IM);
  93 
  94         per_hub_init(cnode);
  95 
  96         cpu_time_init();
  97         install_ipi();
  98 
  99         /* Install our NMI handler if symmon hasn't installed one. */
 100         install_cpu_nmi_handler(cputoslice(cpu));
 101 
 102         enable_percpu_irq(IP27_HUB_PEND0_IRQ, IRQ_TYPE_NONE);
 103         enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE);
 104 }
 105 
 106 /*
 107  * get_nasid() returns the physical node id number of the caller.
 108  */
 109 nasid_t
 110 get_nasid(void)
 111 {
 112         return (nasid_t)((LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_NODEID_MASK)
 113                          >> NSRI_NODEID_SHFT);
 114 }
 115 
 116 /*
 117  * Map the physical node id to a virtual node id (virtual node ids are contiguous).
 118  */
 119 cnodeid_t get_compact_nodeid(void)
 120 {
 121         return NASID_TO_COMPACT_NODEID(get_nasid());
 122 }
 123 
 124 extern void ip27_reboot_setup(void);
 125 
 126 void __init plat_mem_setup(void)
 127 {
 128         u64 p, e, n_mode;
 129         nasid_t nid;
 130 
 131         ip27_reboot_setup();
 132 
 133         /*
 134          * hub_rtc init and cpu clock intr enabled for later calibrate_delay.
 135          */
 136         nid = get_nasid();
 137         printk("IP27: Running on node %d.\n", nid);
 138 
 139         p = LOCAL_HUB_L(PI_CPU_PRESENT_A) & 1;
 140         e = LOCAL_HUB_L(PI_CPU_ENABLE_A) & 1;
 141         printk("Node %d has %s primary CPU%s.\n", nid,
 142                p ? "a" : "no",
 143                e ? ", CPU is running" : "");
 144 
 145         p = LOCAL_HUB_L(PI_CPU_PRESENT_B) & 1;
 146         e = LOCAL_HUB_L(PI_CPU_ENABLE_B) & 1;
 147         printk("Node %d has %s secondary CPU%s.\n", nid,
 148                p ? "a" : "no",
 149                e ? ", CPU is running" : "");
 150 
 151         /*
 152          * Try to catch kernel missconfigurations and give user an
 153          * indication what option to select.
 154          */
 155         n_mode = LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_MORENODES_MASK;
 156         printk("Machine is in %c mode.\n", n_mode ? 'N' : 'M');
 157 #ifdef CONFIG_SGI_SN_N_MODE
 158         if (!n_mode)
 159                 panic("Kernel compiled for M mode.");
 160 #else
 161         if (n_mode)
 162                 panic("Kernel compiled for N mode.");
 163 #endif
 164 
 165         ioport_resource.start = 0;
 166         ioport_resource.end = ~0UL;
 167         set_io_port_base(IO_BASE);
 168 }
/* [<][>][^][v][top][bottom][index][help] */
root/arch/mips/sgi-ip27/ip27-init.c

DEFINITIONS
