arch/ia64/sn/io/sn2/module.c

   1 /* $Id$
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
   8  */
   9
  10 #include <linux/types.h>
  11 #include <linux/slab.h>
  12 #include <asm/sn/sgi.h>
  13 #include <asm/sn/sn_sal.h>
  14 #include <asm/sn/io.h>
  15 #include <asm/sn/invent.h>
  16 #include <asm/sn/hcl.h>
  17 #include <asm/sn/labelcl.h>
  18 #include <asm/sn/xtalk/xbow.h>
  19 #include <asm/sn/pci/bridge.h>
  20 #include <asm/sn/klconfig.h>
  21 #include <asm/sn/module.h>
  22 #include <asm/sn/pci/pcibr.h>
  23 #include <asm/sn/xtalk/xswitch.h>
  24 #include <asm/sn/nodepda.h>
  25 #include <asm/sn/sn_cpuid.h>
  26
  27
  28 /* #define LDEBUG       1  */
  29
  30 #ifdef LDEBUG
  31 #define DPRINTF         printk
  32 #define printf          printk
  33 #else
  34 #define DPRINTF(x...)
  35 #endif
  36
  37 module_t               *modules[MODULE_MAX];
  38 int                     nummodules;
  39
  40 #define SN00_SERIAL_FUDGE       0x3b1af409d513c2
  41 #define SN0_SERIAL_FUDGE        0x6e
  42
  43 void
  44 encode_int_serial(uint64_t src,uint64_t *dest)
  45 {
  46     uint64_t val;
  47     int i;
  48
  49     val = src + SN00_SERIAL_FUDGE;
  50
  51
  52     for (i = 0; i < sizeof(long long); i++) {
  53         ((char*)dest)[i] =
  54             ((char*)&val)[sizeof(long long)/2 +
  55                          ((i%2) ? ((i/2 * -1) - 1) : (i/2))];
  56     }
  57 }
  58
  59
  60 void
  61 decode_int_serial(uint64_t src, uint64_t *dest)
  62 {
  63     uint64_t val;
  64     int i;
  65
  66     for (i = 0; i < sizeof(long long); i++) {
  67         ((char*)&val)[sizeof(long long)/2 +
  68                      ((i%2) ? ((i/2 * -1) - 1) : (i/2))] =
  69             ((char*)&src)[i];
  70     }
  71
  72     *dest = val - SN00_SERIAL_FUDGE;
  73 }
  74
  75
  76 void
  77 encode_str_serial(const char *src, char *dest)
  78 {
  79     int i;
  80
  81     for (i = 0; i < MAX_SERIAL_NUM_SIZE; i++) {
  82
  83         dest[i] = src[MAX_SERIAL_NUM_SIZE/2 +
  84                      ((i%2) ? ((i/2 * -1) - 1) : (i/2))] +
  85             SN0_SERIAL_FUDGE;
  86     }
  87 }
  88
  89 void
  90 decode_str_serial(const char *src, char *dest)
  91 {
  92     int i;
  93
  94     for (i = 0; i < MAX_SERIAL_NUM_SIZE; i++) {
  95         dest[MAX_SERIAL_NUM_SIZE/2 +
  96             ((i%2) ? ((i/2 * -1) - 1) : (i/2))] = src[i] -
  97             SN0_SERIAL_FUDGE;
  98     }
  99 }
 100
 101
 102 module_t *module_lookup(moduleid_t id)
 103 {
 104     int                 i;
 105
 106     for (i = 0; i < nummodules; i++)
 107         if (modules[i]->id == id) {
 108             DPRINTF("module_lookup: found m=0x%p\n", modules[i]);
 109             return modules[i];
 110         }
 111
 112     return NULL;
 113 }
 114
 115 /*
 116  * module_add_node
 117  *
 118  *   The first time a new module number is seen, a module structure is
 119  *   inserted into the module list in order sorted by module number
 120  *   and the structure is initialized.
 121  *
 122  *   The node number is added to the list of nodes in the module.
 123  */
 124
 125 module_t *module_add_node(geoid_t geoid, cnodeid_t cnodeid)
 126 {
 127     module_t           *m;
 128     int                 i;
 129     char                buffer[16];
 130     moduleid_t          moduleid;
 131
 132     memset(buffer, 0, 16);
 133     moduleid = geo_module(geoid);
 134     format_module_id(buffer, moduleid, MODULE_FORMAT_BRIEF);
 135     DPRINTF("module_add_node: moduleid=%s node=%d\n", buffer, cnodeid);
 136
 137     if ((m = module_lookup(moduleid)) == 0) {
 138         m = kmalloc(sizeof (module_t), GFP_KERNEL);
 139         memset(m, 0 , sizeof(module_t));
 140         ASSERT_ALWAYS(m);
 141
 142         m->id = moduleid;
 143         spin_lock_init(&m->lock);
 144
 145         mutex_init_locked(&m->thdcnt);
 146
 147         /* Insert in sorted order by module number */
 148
 149         for (i = nummodules; i > 0 && modules[i - 1]->id > moduleid; i--)
 150             modules[i] = modules[i - 1];
 151
 152         modules[i] = m;
 153         nummodules++;
 154     }
 155
 156     m->nodes[m->nodecnt] = cnodeid;
 157     m->geoid[m->nodecnt] = geoid;
 158     m->nodecnt++;
 159
 160     DPRINTF("module_add_node: module %s now has %d nodes\n", buffer, m->nodecnt);
 161
 162     return m;
 163 }
 164
 165 int module_probe_snum(module_t *m, nasid_t nasid)
 166 {
 167     lboard_t           *board;
 168     klmod_serial_num_t *comp;
 169     char * bcopy(const char * src, char * dest, int count);
 170     char serial_number[16];
 171
 172     /*
 173      * record brick serial number
 174      */
 175     board = find_lboard((lboard_t *) KL_CONFIG_INFO(nasid), KLTYPE_SNIA);
 176
 177     if (! board || KL_CONFIG_DUPLICATE_BOARD(board))
 178     {
 179 #if     LDEBUG
 180         printf ("module_probe_snum: no IP35 board found!\n");
 181 #endif
 182         return 0;
 183     }
 184
 185     board_serial_number_get( board, serial_number );
 186     if( serial_number[0] != '\0' ) {
 187         encode_str_serial( serial_number, m->snum.snum_str );
 188         m->snum_valid = 1;
 189     }
 190 #if     LDEBUG
 191     else {
 192         printf("module_probe_snum: brick serial number is null!\n");
 193     }
 194     printf("module_probe_snum: brick serial number == %s\n", serial_number);
 195 #endif /* DEBUG */
 196
 197     board = find_lboard((lboard_t *) KL_CONFIG_INFO(nasid),
 198                         KLTYPE_IOBRICK_XBOW);
 199
 200     if (! board || KL_CONFIG_DUPLICATE_BOARD(board))
 201         return 0;
 202
 203     comp = GET_SNUM_COMP(board);
 204
 205     if (comp) {
 206 #if LDEBUG
 207             int i;
 208
 209             printf("********found module with id %x and string", m->id);
 210
 211             for (i = 0; i < MAX_SERIAL_NUM_SIZE; i++)
 212                 printf(" %x ", comp->snum.snum_str[i]);
 213
 214             printf("\n");       /* Fudged string is not ASCII */
 215 #endif
 216
 217             if (comp->snum.snum_str[0] != '\0') {
 218                 bcopy(comp->snum.snum_str,
 219                       m->sys_snum,
 220                       MAX_SERIAL_NUM_SIZE);
 221                 m->sys_snum_valid = 1;
 222             }
 223     }
 224
 225     if (m->sys_snum_valid)
 226         return 1;
 227     else {
 228         DPRINTF("Invalid serial number for module %d, "
 229                 "possible missing or invalid NIC.", m->id);
 230         return 0;
 231     }
 232 }
 233
 234 void
 235 io_module_init(void)
 236 {
 237     cnodeid_t           node;
 238     lboard_t           *board;
 239     nasid_t             nasid;
 240     int                 nserial;
 241     module_t           *m;
 242
 243     DPRINTF("*******module_init\n");
 244
 245     nserial = 0;
 246
 247     for (node = 0; node < numnodes; node++) {
 248         nasid = COMPACT_TO_NASID_NODEID(node);
 249
 250         board = find_lboard((lboard_t *) KL_CONFIG_INFO(nasid), KLTYPE_SNIA);
 251         ASSERT(board);
 252
 253         m = module_add_node(board->brd_geoid, node);
 254
 255         if (! m->snum_valid && module_probe_snum(m, nasid))
 256             nserial++;
 257     }
 258
 259     DPRINTF("********found total of %d serial numbers in the system\n",
 260             nserial);
 261
 262     if (nserial == 0)
 263         DPRINTF(KERN_WARNING  "io_module_init: No serial number found.\n");
 264 }