drivers/staging/cxt1e1/sbeproc.c

   1 /* Copyright (C) 2004-2005  SBE, Inc.
   2  *
   3  *   This program is free software; you can redistribute it and/or modify
   4  *   it under the terms of the GNU General Public License as published by
   5  *   the Free Software Foundation; either version 2 of the License, or
   6  *   (at your option) any later version.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  */
  13
  14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  15
  16 #include <linux/types.h>
  17 #include <linux/module.h>
  18 #include <linux/errno.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/proc_fs.h>
  22 #include <linux/sched.h>
  23 #include <asm/uaccess.h>
  24 #include "pmcc4_sysdep.h"
  25 #include "sbecom_inline_linux.h"
  26 #include "pmcc4_private.h"
  27 #include "sbeproc.h"
  28
  29 /* forwards */
  30 void        sbecom_get_brdinfo (ci_t *, struct sbe_brd_info *, u_int8_t *);
  31 extern struct s_hdw_info hdw_info[MAX_BOARDS];
  32
  33 #ifdef CONFIG_PROC_FS
  34
  35 /********************************************************************/
  36 /* procfs stuff                                                     */
  37 /********************************************************************/
  38
  39
  40 void
  41 sbecom_proc_brd_cleanup (ci_t * ci)
  42 {
  43     if (ci->dir_dev)
  44     {
  45         char dir[7 + SBE_IFACETMPL_SIZE + 1];
  46         snprintf(dir, sizeof(dir), "driver/%s", ci->devname);
  47         remove_proc_entry("info", ci->dir_dev);
  48         remove_proc_entry(dir, NULL);
  49         ci->dir_dev = NULL;
  50     }
  51 }
  52
  53
  54 static int
  55 sbecom_proc_get_sbe_info (char *buffer, char **start, off_t offset,
  56                           int length, int *eof, void *priv)
  57 {
  58     ci_t       *ci = (ci_t *) priv;
  59     int         len = 0;
  60     char       *spd;
  61     struct sbe_brd_info *bip;
  62
  63     if (!(bip = OS_kmalloc (sizeof (struct sbe_brd_info))))
  64     {
  65         return -ENOMEM;
  66     }
  67 #if 0
  68     /** RLD DEBUG **/
  69     pr_info(">> sbecom_proc_get_sbe_info: entered, offset %d. length %d.\n",
  70             (int) offset, (int) length);
  71 #endif
  72
  73     {
  74         hdw_info_t *hi = &hdw_info[ci->brdno];
  75
  76         u_int8_t *bsn = 0;
  77
  78         switch (hi->promfmt)
  79         {
  80         case PROM_FORMAT_TYPE1:
  81             bsn = (u_int8_t *) hi->mfg_info.pft1.Serial;
  82             break;
  83         case PROM_FORMAT_TYPE2:
  84             bsn = (u_int8_t *) hi->mfg_info.pft2.Serial;
  85             break;
  86         }
  87
  88         sbecom_get_brdinfo (ci, bip, bsn);
  89     }
  90
  91 #if 0
  92     /** RLD DEBUG **/
  93     pr_info(">> sbecom_get_brdinfo: returned, first_if %p <%s> last_if %p <%s>\n",
  94             (char *) &bip->first_iname, (char *) &bip->first_iname,
  95             (char *) &bip->last_iname, (char *) &bip->last_iname);
  96 #endif
  97     len += sprintf (buffer + len, "Board Type:    ");
  98     switch (bip->brd_id)
  99     {
 100     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C1T3):
 101         len += sprintf (buffer + len, "wanPMC-C1T3");
 102         break;
 103     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPTMC_256T3_E1):
 104         len += sprintf (buffer + len, "wanPTMC-256T3 <E1>");
 105         break;
 106     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPTMC_256T3_T1):
 107         len += sprintf (buffer + len, "wanPTMC-256T3 <T1>");
 108         break;
 109     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPTMC_C24TE1):
 110         len += sprintf (buffer + len, "wanPTMC-C24TE1");
 111         break;
 112
 113     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C4T1E1):
 114     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C4T1E1_L):
 115         len += sprintf (buffer + len, "wanPMC-C4T1E1");
 116         break;
 117     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C2T1E1):
 118     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C2T1E1_L):
 119         len += sprintf (buffer + len, "wanPMC-C2T1E1");
 120         break;
 121     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C1T1E1):
 122     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPMC_C1T1E1_L):
 123         len += sprintf (buffer + len, "wanPMC-C1T1E1");
 124         break;
 125
 126     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPCI_C4T1E1):
 127         len += sprintf (buffer + len, "wanPCI-C4T1E1");
 128         break;
 129     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPCI_C2T1E1):
 130         len += sprintf (buffer + len, "wanPCI-C2T1E1");
 131         break;
 132     case SBE_BOARD_ID (PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_WANPCI_C1T1E1):
 133         len += sprintf (buffer + len, "wanPCI-C1T1E1");
 134         break;
 135
 136     default:
 137         len += sprintf (buffer + len, "unknown");
 138         break;
 139     }
 140     len += sprintf (buffer + len, "  [%08X]\n", bip->brd_id);
 141
 142     len += sprintf (buffer + len, "Board Number:  %d\n", bip->brdno);
 143     len += sprintf (buffer + len, "Hardware ID:   0x%02X\n", ci->hdw_bid);
 144     len += sprintf (buffer + len, "Board SN:      %06X\n", bip->brd_sn);
 145         len += sprintf(buffer + len, "Board MAC:     %pMF\n",
 146                 bip->brd_mac_addr);
 147     len += sprintf (buffer + len, "Ports:         %d\n", ci->max_port);
 148     len += sprintf (buffer + len, "Channels:      %d\n", bip->brd_chan_cnt);
 149 #if 1
 150     len += sprintf (buffer + len, "Interface:     %s -> %s\n",
 151                     (char *) &bip->first_iname, (char *) &bip->last_iname);
 152 #else
 153     len += sprintf (buffer + len, "Interface:     <not available> 1st %p lst %p\n",
 154                     (char *) &bip->first_iname, (char *) &bip->last_iname);
 155 #endif
 156
 157     switch (bip->brd_pci_speed)
 158     {
 159     case BINFO_PCI_SPEED_33:
 160         spd = "33Mhz";
 161         break;
 162     case BINFO_PCI_SPEED_66:
 163         spd = "66Mhz";
 164         break;
 165     default:
 166         spd = "<not available>";
 167         break;
 168     }
 169     len += sprintf (buffer + len, "PCI Bus Speed: %s\n", spd);
 170     len += sprintf (buffer + len, "Release:       %s\n", ci->release);
 171
 172 #ifdef SBE_PMCC4_ENABLE
 173     {
 174                extern int cxt1e1_max_mru;
 175 #if 0
 176         extern int max_chans_used;
 177         extern int cxt1e1_max_mtu;
 178 #endif
 179         extern int max_rxdesc_used, max_txdesc_used;
 180
 181         len += sprintf (buffer + len, "\ncxt1e1_max_mru:         %d\n", cxt1e1_max_mru);
 182 #if 0
 183         len += sprintf (buffer + len, "\nmax_chans_used:  %d\n", max_chans_used);
 184         len += sprintf (buffer + len, "cxt1e1_max_mtu:         %d\n", cxt1e1_max_mtu);
 185 #endif
 186         len += sprintf (buffer + len, "max_rxdesc_used: %d\n", max_rxdesc_used);
 187         len += sprintf (buffer + len, "max_txdesc_used: %d\n", max_txdesc_used);
 188     }
 189 #endif
 190
 191     OS_kfree (bip);                 /* cleanup */
 192
 193     /***
 194      * How to be a proc read function
 195      * ------------------------------
 196      * Prototype:
 197      *    int f(char *buffer, char **start, off_t offset,
 198      *          int count, int *peof, void *dat)
 199      *
 200      * Assume that the buffer is "count" bytes in size.
 201      *
 202      * If you know you have supplied all the data you
 203      * have, set *peof.
 204      *
 205      * You have three ways to return data:
 206      * 0) Leave *start = NULL.  (This is the default.)
 207      *    Put the data of the requested offset at that
 208      *    offset within the buffer.  Return the number (n)
 209      *    of bytes there are from the beginning of the
 210      *    buffer up to the last byte of data.  If the
 211      *    number of supplied bytes (= n - offset) is
 212      *    greater than zero and you didn't signal eof
 213      *    and the reader is prepared to take more data
 214      *    you will be called again with the requested
 215      *    offset advanced by the number of bytes
 216      *    absorbed.  This interface is useful for files
 217      *    no larger than the buffer.
 218      * 1) Set *start = an unsigned long value less than
 219      *    the buffer address but greater than zero.
 220      *    Put the data of the requested offset at the
 221      *    beginning of the buffer.  Return the number of
 222      *    bytes of data placed there.  If this number is
 223      *    greater than zero and you didn't signal eof
 224      *    and the reader is prepared to take more data
 225      *    you will be called again with the requested
 226      *    offset advanced by *start.  This interface is
 227      *    useful when you have a large file consisting
 228      *    of a series of blocks which you want to count
 229      *    and return as wholes.
 230      *    (Hack by Paul.Russell@rustcorp.com.au)
 231      * 2) Set *start = an address within the buffer.
 232      *    Put the data of the requested offset at *start.
 233      *    Return the number of bytes of data placed there.
 234      *    If this number is greater than zero and you
 235      *    didn't signal eof and the reader is prepared to
 236      *    take more data you will be called again with the
 237      *    requested offset advanced by the number of bytes
 238      *    absorbed.
 239      */
 240
 241 #if 1
 242     /* #4 - interpretation of above = set EOF, return len */
 243     *eof = 1;
 244 #endif
 245
 246 #if 0
 247     /*
 248      * #1 - from net/wireless/atmel.c RLD NOTE -there's something wrong with
 249      * this plagarized code which results in this routine being called TWICE.
 250      * The second call returns ZERO, resulting in hidden failure, but at
 251      * least only a single message set is being displayed.
 252      */
 253     if (len <= offset + length)
 254         *eof = 1;
 255     *start = buffer + offset;
 256     len -= offset;
 257     if (len > length)
 258         len = length;
 259     if (len < 0)
 260         len = 0;
 261 #endif
 262
 263 #if 0                               /* #2 from net/tokenring/olympic.c +
 264                                      * lanstreamer.c */
 265     {
 266         off_t       begin = 0;
 267         int         size = 0;
 268         off_t       pos = 0;
 269
 270         size = len;
 271         pos = begin + size;
 272         if (pos < offset)
 273         {
 274             len = 0;
 275             begin = pos;
 276         }
 277         *start = buffer + (offset - begin);     /* Start of wanted data */
 278         len -= (offset - begin);    /* Start slop */
 279         if (len > length)
 280             len = length;           /* Ending slop */
 281     }
 282 #endif
 283
 284 #if 0                               /* #3 from
 285                                      * char/ftape/lowlevel/ftape-proc.c */
 286     len = strlen (buffer);
 287     *start = NULL;
 288     if (offset + length >= len)
 289         *eof = 1;
 290     else
 291         *eof = 0;
 292 #endif
 293
 294 #if 0
 295     pr_info(">> proc_fs: returned len = %d., start %p\n", len, start);  /* RLD DEBUG */
 296 #endif
 297
 298 /***
 299    using NONE: returns = 314.314.314.
 300    using #1  : returns = 314, 0.
 301    using #2  : returns = 314, 0, 0.
 302    using #3  : returns = 314, 314.
 303    using #4  : returns = 314, 314.
 304 ***/
 305
 306     return len;
 307 }
 308
 309 /* initialize the /proc subsystem for the specific SBE driver */
 310
 311 int         __init
 312 sbecom_proc_brd_init (ci_t * ci)
 313 {
 314     struct proc_dir_entry *e;
 315     char dir[7 + SBE_IFACETMPL_SIZE + 1];
 316
 317     /* create a directory in the root procfs */
 318     snprintf(dir, sizeof(dir), "driver/%s", ci->devname);
 319     ci->dir_dev = proc_mkdir(dir, NULL);
 320     if (!ci->dir_dev)
 321     {
 322         pr_err("Unable to create directory /proc/driver/%s\n", ci->devname);
 323         goto fail;
 324     }
 325     e = create_proc_read_entry ("info", S_IFREG | S_IRUGO,
 326                                 ci->dir_dev, sbecom_proc_get_sbe_info, ci);
 327     if (!e)
 328     {
 329         pr_err("Unable to create entry /proc/driver/%s/info\n", ci->devname);
 330         goto fail;
 331     }
 332     return 0;
 333
 334 fail:
 335     sbecom_proc_brd_cleanup (ci);
 336     return 1;
 337 }
 338
 339 #else                           /*** ! CONFIG_PROC_FS ***/
 340
 341 /* stubbed off dummy routines */
 342
 343 void
 344 sbecom_proc_brd_cleanup (ci_t * ci)
 345 {
 346 }
 347
 348 int         __init
 349 sbecom_proc_brd_init (ci_t * ci)
 350 {
 351     return 0;
 352 }
 353
 354 #endif                          /*** CONFIG_PROC_FS ***/
 355
 356
 357 /*** End-of-File ***/