drivers/staging/cxt1e1/hwprobe.c

   1 /* Copyright (C) 2007  One Stop Systems
   2  * Copyright (C) 2003-2005  SBE, Inc.
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation; either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  */
  14
  15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  16
  17 #include <linux/netdevice.h>
  18 #include <linux/hdlc.h>
  19 #include <linux/if_arp.h>
  20 #include <asm/uaccess.h>
  21 #include <linux/rtnetlink.h>
  22 #include <linux/pci.h>
  23 #include "pmcc4_sysdep.h"
  24 #include "sbecom_inline_linux.h"
  25 #include "libsbew.h"
  26 #include "pmcc4_private.h"
  27 #include "pmcc4.h"
  28 #include "pmcc4_ioctls.h"
  29 #include "pmc93x6_eeprom.h"
  30 #ifdef CONFIG_PROC_FS
  31 #include "sbeproc.h"
  32 #endif
  33
  34 extern int  cxt1e1_log_level;
  35 extern int  error_flag;
  36 extern int  drvr_state;
  37
  38 /* forward references */
  39 void        c4_stopwd (ci_t *);
  40 struct net_device * __init c4_add_dev (hdw_info_t *, int, unsigned long, unsigned long, int, int);
  41
  42
  43 struct s_hdw_info hdw_info[MAX_BOARDS];
  44
  45
  46 void        __init
  47 show_two (hdw_info_t *hi, int brdno)
  48 {
  49     ci_t       *ci;
  50     struct pci_dev *pdev;
  51     char       *bid;
  52     char       *bp, banner[80];
  53     char        sn[6];
  54
  55     bp = banner;
  56     memset (banner, 0, 80);         /* clear print buffer */
  57
  58     ci = (ci_t *)(netdev_priv(hi->ndev));
  59     bid = sbeid_get_bdname (ci);
  60     switch (hi->promfmt)
  61     {
  62     case PROM_FORMAT_TYPE1:
  63         memcpy (sn, (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
  64         break;
  65     case PROM_FORMAT_TYPE2:
  66         memcpy (sn, (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
  67         break;
  68     default:
  69         memset (sn, 0, 6);
  70         break;
  71     }
  72
  73     sprintf (banner, "%s: %s  S/N %06X, MUSYCC Rev %02X",
  74              hi->devname, bid,
  75              ((sn[3] << 16) & 0xff0000) |
  76               ((sn[4] << 8) & 0x00ff00) |
  77               (sn[5] & 0x0000ff),
  78              (u_int8_t) hi->revid[0]);
  79
  80     pr_info("%s\n", banner);
  81
  82     pdev = hi->pdev[0];
  83     pr_info("%s: %s at v/p=%lx/%lx (%02x:%02x.%x) irq %d\n",
  84             hi->devname, "MUSYCC",
  85             (unsigned long) hi->addr_mapped[0], hi->addr[0],
  86             hi->pci_busno, (u_int8_t) PCI_SLOT (pdev->devfn),
  87             (u_int8_t) PCI_FUNC (pdev->devfn), pdev->irq);
  88
  89     pdev = hi->pdev[1];
  90     pr_info("%s: %s at v/p=%lx/%lx (%02x:%02x.%x) irq %d\n",
  91             hi->devname, "EBUS  ",
  92             (unsigned long) hi->addr_mapped[1], hi->addr[1],
  93             hi->pci_busno, (u_int8_t) PCI_SLOT (pdev->devfn),
  94             (u_int8_t) PCI_FUNC (pdev->devfn), pdev->irq);
  95 }
  96
  97
  98 void        __init
  99 hdw_sn_get (hdw_info_t *hi, int brdno)
 100 {
 101     /* obtain hardware EEPROM information */
 102     long        addr;
 103
 104     addr = (long) hi->addr_mapped[1] + EEPROM_OFFSET;
 105
 106     /* read EEPROM with largest known format size... */
 107     pmc_eeprom_read_buffer (addr, 0, (char *) hi->mfg_info.data, sizeof (FLD_TYPE2));
 108
 109 #if 0
 110     {
 111         unsigned char *ucp = (unsigned char *) &hi->mfg_info.data;
 112
 113         pr_info("eeprom[00]:  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 114                 *(ucp + 0), *(ucp + 1), *(ucp + 2), *(ucp + 3), *(ucp + 4), *(ucp + 5), *(ucp + 6), *(ucp + 7));
 115         pr_info("eeprom[08]:  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 116                 *(ucp + 8), *(ucp + 9), *(ucp + 10), *(ucp + 11), *(ucp + 12), *(ucp + 13), *(ucp + 14), *(ucp + 15));
 117         pr_info("eeprom[16]:  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 118                 *(ucp + 16), *(ucp + 17), *(ucp + 18), *(ucp + 19), *(ucp + 20), *(ucp + 21), *(ucp + 22), *(ucp + 23));
 119         pr_info("eeprom[24]:  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 120                 *(ucp + 24), *(ucp + 25), *(ucp + 26), *(ucp + 27), *(ucp + 28), *(ucp + 29), *(ucp + 30), *(ucp + 31));
 121         pr_info("eeprom[32]:  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 122                 *(ucp + 32), *(ucp + 33), *(ucp + 34), *(ucp + 35), *(ucp + 36), *(ucp + 37), *(ucp + 38), *(ucp + 39));
 123         pr_info("eeprom[40]:  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 124                 *(ucp + 40), *(ucp + 41), *(ucp + 42), *(ucp + 43), *(ucp + 44), *(ucp + 45), *(ucp + 46), *(ucp + 47));
 125     }
 126 #endif
 127 #if 0
 128     pr_info("sn: %x %x %x %x %x %x\n",
 129             hi->mfg_info.Serial[0],
 130             hi->mfg_info.Serial[1],
 131             hi->mfg_info.Serial[2],
 132             hi->mfg_info.Serial[3],
 133             hi->mfg_info.Serial[4],
 134             hi->mfg_info.Serial[5]);
 135 #endif
 136
 137     if ((hi->promfmt = pmc_verify_cksum (&hi->mfg_info.data)) == PROM_FORMAT_Unk)
 138     {
 139         /* bad crc, data is suspect */
 140         if (cxt1e1_log_level >= LOG_WARN)
 141             pr_info("%s: EEPROM cksum error\n", hi->devname);
 142         hi->mfg_info_sts = EEPROM_CRCERR;
 143     } else
 144         hi->mfg_info_sts = EEPROM_OK;
 145 }
 146
 147
 148 void        __init
 149 prep_hdw_info (void)
 150 {
 151     hdw_info_t *hi;
 152     int         i;
 153
 154     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 155     {
 156         hi->pci_busno = 0xff;
 157         hi->pci_slot = 0xff;
 158         hi->pci_pin[0] = 0;
 159         hi->pci_pin[1] = 0;
 160         hi->ndev = NULL;
 161         hi->addr[0] = 0L;
 162         hi->addr[1] = 0L;
 163         hi->addr_mapped[0] = 0L;
 164         hi->addr_mapped[1] = 0L;
 165     }
 166 }
 167
 168 void
 169 cleanup_ioremap (void)
 170 {
 171     hdw_info_t *hi;
 172     int         i;
 173
 174     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 175     {
 176         if (hi->pci_slot == 0xff)
 177             break;
 178         if (hi->addr_mapped[0])
 179         {
 180             iounmap ((void *) (hi->addr_mapped[0]));
 181             release_mem_region ((long) hi->addr[0], hi->len[0]);
 182             hi->addr_mapped[0] = 0;
 183         }
 184         if (hi->addr_mapped[1])
 185         {
 186             iounmap ((void *) (hi->addr_mapped[1]));
 187             release_mem_region ((long) hi->addr[1], hi->len[1]);
 188             hi->addr_mapped[1] = 0;
 189         }
 190     }
 191 }
 192
 193
 194 void
 195 cleanup_devs (void)
 196 {
 197     hdw_info_t *hi;
 198     int         i;
 199
 200     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 201     {
 202         if (hi->pci_slot == 0xff || !hi->ndev)
 203             break;
 204         c4_stopwd(netdev_priv(hi->ndev));
 205 #ifdef CONFIG_PROC_FS
 206         sbecom_proc_brd_cleanup(netdev_priv(hi->ndev));
 207 #endif
 208         unregister_netdev (hi->ndev);
 209         free_irq (hi->pdev[0]->irq, hi->ndev);
 210 #ifdef CONFIG_SBE_PMCC4_NCOMM
 211         free_irq (hi->pdev[1]->irq, hi->ndev);
 212 #endif
 213         OS_kfree (hi->ndev);
 214     }
 215 }
 216
 217
 218 static int  __init
 219 c4_hdw_init (struct pci_dev *pdev, int found)
 220 {
 221     hdw_info_t *hi;
 222     int         i;
 223     int         fun, slot;
 224     unsigned char busno = 0xff;
 225
 226     /* our MUSYCC chip supports two functions, 0 & 1 */
 227     if ((fun = PCI_FUNC (pdev->devfn)) > 1)
 228     {
 229         pr_warning("unexpected devfun: 0x%x\n", pdev->devfn);
 230         return 0;
 231     }
 232     if (pdev->bus)                  /* obtain bus number */
 233         busno = pdev->bus->number;
 234     else
 235         busno = 0;                  /* default for system PCI inconsistency */
 236     slot = pdev->devfn & ~0x07;
 237
 238     /*
 239      * Functions 0 & 1 for a given board (identified by same bus(busno) and
 240      * slot(slot)) are placed into the same 'hardware' structure.  The first
 241      * part of the board's functionality will be placed into an unpopulated
 242      * element, identified by "slot==(0xff)".  The second part of a board's
 243      * functionality will match the previously loaded slot/busno.
 244      */
 245     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 246     {
 247         /*
 248          * match with board's first found interface, otherwise this is first
 249          * found
 250          */
 251         if ((hi->pci_slot == 0xff) ||   /* new board */
 252             ((hi->pci_slot == slot) && (hi->bus == pdev->bus)))
 253             break;                  /* found for-loop exit */
 254     }
 255     if (i == MAX_BOARDS)            /* no match in above loop means MAX
 256                                      * exceeded */
 257     {
 258         pr_warning("exceeded number of allowed devices (>%d)?\n", MAX_BOARDS);
 259         return 0;
 260     }
 261     if (pdev->bus)
 262         hi->pci_busno = pdev->bus->number;
 263     else
 264         hi->pci_busno = 0;          /* default for system PCI inconsistency */
 265     hi->pci_slot = slot;
 266     pci_read_config_byte (pdev, PCI_INTERRUPT_PIN, &hi->pci_pin[fun]);
 267     pci_read_config_byte (pdev, PCI_REVISION_ID, &hi->revid[fun]);
 268     hi->bus = pdev->bus;
 269     hi->addr[fun] = pci_resource_start (pdev, 0);
 270     hi->len[fun] = pci_resource_end (pdev, 0) - hi->addr[fun] + 1;
 271     hi->pdev[fun] = pdev;
 272
 273     {
 274         /*
 275          * create device name from module name, plus add the appropriate
 276          * board number
 277          */
 278         char       *cp = hi->devname;
 279
 280         strcpy (cp, KBUILD_MODNAME);
 281         cp += strlen (cp);          /* reposition */
 282         *cp++ = '-';
 283         *cp++ = '0' + (found / 2);  /* there are two found interfaces per
 284                                      * board */
 285         *cp = 0;                    /* termination */
 286     }
 287
 288     return 1;
 289 }
 290
 291
 292 status_t    __init
 293 c4hw_attach_all (void)
 294 {
 295     hdw_info_t *hi;
 296     struct pci_dev *pdev = NULL;
 297     int         found = 0, i, j;
 298
 299     error_flag = 0;
 300     prep_hdw_info ();
 301     /*** scan PCI bus for all possible boards */
 302     while ((pdev = pci_get_device (PCI_VENDOR_ID_CONEXANT,
 303                                     PCI_DEVICE_ID_CN8474,
 304                                     pdev)))
 305     {
 306         if (c4_hdw_init (pdev, found))
 307             found++;
 308     }
 309     if (!found)
 310     {
 311         pr_warning("No boards found\n");
 312         return -ENODEV;
 313     }
 314     /* sanity check for consistent hardware found */
 315     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 316     {
 317         if (hi->pci_slot != 0xff && (!hi->addr[0] || !hi->addr[1]))
 318         {
 319             pr_warning("%s: something very wrong with pci_get_device\n",
 320                        hi->devname);
 321             return -EIO;
 322         }
 323     }
 324     /* bring board's memory regions on/line */
 325     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 326     {
 327         if (hi->pci_slot == 0xff)
 328             break;
 329         for (j = 0; j < 2; j++)
 330         {
 331             if (!request_mem_region (hi->addr[j], hi->len[j], hi->devname))
 332             {
 333                 pr_warning("%s: memory in use, addr=0x%lx, len=0x%lx ?\n",
 334                            hi->devname, hi->addr[j], hi->len[j]);
 335                 cleanup_ioremap ();
 336                 return -ENOMEM;
 337             }
 338             hi->addr_mapped[j] = (unsigned long) ioremap (hi->addr[j], hi->len[j]);
 339             if (!hi->addr_mapped[j])
 340             {
 341                 pr_warning("%s: ioremap fails, addr=0x%lx, len=0x%lx ?\n",
 342                            hi->devname, hi->addr[j], hi->len[j]);
 343                 cleanup_ioremap ();
 344                 return -ENOMEM;
 345             }
 346 #ifdef SBE_MAP_DEBUG
 347             pr_warning("%s: io remapped from phys %x to virt %x\n",
 348                        hi->devname, (u_int32_t) hi->addr[j], (u_int32_t) hi->addr_mapped[j]);
 349 #endif
 350         }
 351     }
 352
 353     drvr_state = SBE_DRVR_AVAILABLE;
 354
 355     /* Have now memory mapped all boards.  Now allow board's access to system */
 356     for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
 357     {
 358         if (hi->pci_slot == 0xff)
 359             break;
 360         if (pci_enable_device (hi->pdev[0]) ||
 361             pci_enable_device (hi->pdev[1]))
 362         {
 363             drvr_state = SBE_DRVR_DOWN;
 364             pr_warning("%s: failed to enable card %d slot %d\n",
 365                        hi->devname, i, hi->pci_slot);
 366             cleanup_devs ();
 367             cleanup_ioremap ();
 368             return -EIO;
 369         }
 370         pci_set_master (hi->pdev[0]);
 371         pci_set_master (hi->pdev[1]);
 372         if (!(hi->ndev = c4_add_dev (hi, i, (long) hi->addr_mapped[0],
 373                                      (long) hi->addr_mapped[1],
 374                                      hi->pdev[0]->irq,
 375                                      hi->pdev[1]->irq)))
 376         {
 377             drvr_state = SBE_DRVR_DOWN;
 378             cleanup_ioremap ();
 379             /* NOTE: c4_add_dev() does its own device cleanup */
 380 #if 0
 381             cleanup_devs ();
 382 #endif
 383             return error_flag;      /* error_flag set w/in add_dev() */
 384         }
 385         show_two (hi, i);           /* displays found information */
 386     }
 387     return 0;
 388 }
 389
 390 /***  End-of-File  ***/