linux/drivers/net/wireless/intersil/prism54/oid_mgt.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  Copyright (C) 2003,2004 Aurelien Alleaume <slts@free.fr>
   4 */
   5
   6#include <linux/kernel.h>
   7#include <linux/slab.h>
   8
   9#include "prismcompat.h"
  10#include "islpci_dev.h"
  11#include "islpci_mgt.h"
  12#include "isl_oid.h"
  13#include "oid_mgt.h"
  14#include "isl_ioctl.h"
  15
  16/* to convert between channel and freq */
  17static const int frequency_list_bg[] = { 2412, 2417, 2422, 2427, 2432,
  18        2437, 2442, 2447, 2452, 2457, 2462, 2467, 2472, 2484
  19};
  20
  21int
  22channel_of_freq(int f)
  23{
  24        int c = 0;
  25
  26        if ((f >= 2412) && (f <= 2484)) {
  27                while ((c < 14) && (f != frequency_list_bg[c]))
  28                        c++;
  29                return (c >= 14) ? 0 : ++c;
  30        } else if ((f >= (int) 5000) && (f <= (int) 6000)) {
  31                return ( (f - 5000) / 5 );
  32        } else
  33                return 0;
  34}
  35
  36#define OID_STRUCT(name,oid,s,t) [name] = {oid, 0, sizeof(s), t}
  37#define OID_STRUCT_C(name,oid,s,t) OID_STRUCT(name,oid,s,t | OID_FLAG_CACHED)
  38#define OID_U32(name,oid) OID_STRUCT(name,oid,u32,OID_TYPE_U32)
  39#define OID_U32_C(name,oid) OID_STRUCT_C(name,oid,u32,OID_TYPE_U32)
  40#define OID_STRUCT_MLME(name,oid) OID_STRUCT(name,oid,struct obj_mlme,OID_TYPE_MLME)
  41#define OID_STRUCT_MLMEEX(name,oid) OID_STRUCT(name,oid,struct obj_mlmeex,OID_TYPE_MLMEEX)
  42
  43#define OID_UNKNOWN(name,oid) OID_STRUCT(name,oid,0,0)
  44
  45struct oid_t isl_oid[] = {
  46        OID_STRUCT(GEN_OID_MACADDRESS, 0x00000000, u8[6], OID_TYPE_ADDR),
  47        OID_U32(GEN_OID_LINKSTATE, 0x00000001),
  48        OID_UNKNOWN(GEN_OID_WATCHDOG, 0x00000002),
  49        OID_UNKNOWN(GEN_OID_MIBOP, 0x00000003),
  50        OID_UNKNOWN(GEN_OID_OPTIONS, 0x00000004),
  51        OID_UNKNOWN(GEN_OID_LEDCONFIG, 0x00000005),
  52
  53        /* 802.11 */
  54        OID_U32_C(DOT11_OID_BSSTYPE, 0x10000000),
  55        OID_STRUCT_C(DOT11_OID_BSSID, 0x10000001, u8[6], OID_TYPE_RAW),
  56        OID_STRUCT_C(DOT11_OID_SSID, 0x10000002, struct obj_ssid,
  57                     OID_TYPE_SSID),
  58        OID_U32(DOT11_OID_STATE, 0x10000003),
  59        OID_U32(DOT11_OID_AID, 0x10000004),
  60        OID_STRUCT(DOT11_OID_COUNTRYSTRING, 0x10000005, u8[4], OID_TYPE_RAW),
  61        OID_STRUCT_C(DOT11_OID_SSIDOVERRIDE, 0x10000006, struct obj_ssid,
  62                     OID_TYPE_SSID),
  63
  64        OID_U32(DOT11_OID_MEDIUMLIMIT, 0x11000000),
  65        OID_U32_C(DOT11_OID_BEACONPERIOD, 0x11000001),
  66        OID_U32(DOT11_OID_DTIMPERIOD, 0x11000002),
  67        OID_U32(DOT11_OID_ATIMWINDOW, 0x11000003),
  68        OID_U32(DOT11_OID_LISTENINTERVAL, 0x11000004),
  69        OID_U32(DOT11_OID_CFPPERIOD, 0x11000005),
  70        OID_U32(DOT11_OID_CFPDURATION, 0x11000006),
  71
  72        OID_U32_C(DOT11_OID_AUTHENABLE, 0x12000000),
  73        OID_U32_C(DOT11_OID_PRIVACYINVOKED, 0x12000001),
  74        OID_U32_C(DOT11_OID_EXUNENCRYPTED, 0x12000002),
  75        OID_U32_C(DOT11_OID_DEFKEYID, 0x12000003),
  76        [DOT11_OID_DEFKEYX] = {0x12000004, 3, sizeof (struct obj_key),
  77                               OID_FLAG_CACHED | OID_TYPE_KEY}, /* DOT11_OID_DEFKEY1,...DOT11_OID_DEFKEY4 */
  78        OID_UNKNOWN(DOT11_OID_STAKEY, 0x12000008),
  79        OID_U32(DOT11_OID_REKEYTHRESHOLD, 0x12000009),
  80        OID_UNKNOWN(DOT11_OID_STASC, 0x1200000a),
  81
  82        OID_U32(DOT11_OID_PRIVTXREJECTED, 0x1a000000),
  83        OID_U32(DOT11_OID_PRIVRXPLAIN, 0x1a000001),
  84        OID_U32(DOT11_OID_PRIVRXFAILED, 0x1a000002),
  85        OID_U32(DOT11_OID_PRIVRXNOKEY, 0x1a000003),
  86
  87        OID_U32_C(DOT11_OID_RTSTHRESH, 0x13000000),
  88        OID_U32_C(DOT11_OID_FRAGTHRESH, 0x13000001),
  89        OID_U32_C(DOT11_OID_SHORTRETRIES, 0x13000002),
  90        OID_U32_C(DOT11_OID_LONGRETRIES, 0x13000003),
  91        OID_U32_C(DOT11_OID_MAXTXLIFETIME, 0x13000004),
  92        OID_U32(DOT11_OID_MAXRXLIFETIME, 0x13000005),
  93        OID_U32(DOT11_OID_AUTHRESPTIMEOUT, 0x13000006),
  94        OID_U32(DOT11_OID_ASSOCRESPTIMEOUT, 0x13000007),
  95
  96        OID_UNKNOWN(DOT11_OID_ALOFT_TABLE, 0x1d000000),
  97        OID_UNKNOWN(DOT11_OID_ALOFT_CTRL_TABLE, 0x1d000001),
  98        OID_UNKNOWN(DOT11_OID_ALOFT_RETREAT, 0x1d000002),
  99        OID_UNKNOWN(DOT11_OID_ALOFT_PROGRESS, 0x1d000003),
 100        OID_U32(DOT11_OID_ALOFT_FIXEDRATE, 0x1d000004),
 101        OID_UNKNOWN(DOT11_OID_ALOFT_RSSIGRAPH, 0x1d000005),
 102        OID_UNKNOWN(DOT11_OID_ALOFT_CONFIG, 0x1d000006),
 103
 104        [DOT11_OID_VDCFX] = {0x1b000000, 7, 0, 0},
 105        OID_U32(DOT11_OID_MAXFRAMEBURST, 0x1b000008),
 106
 107        OID_U32(DOT11_OID_PSM, 0x14000000),
 108        OID_U32(DOT11_OID_CAMTIMEOUT, 0x14000001),
 109        OID_U32(DOT11_OID_RECEIVEDTIMS, 0x14000002),
 110        OID_U32(DOT11_OID_ROAMPREFERENCE, 0x14000003),
 111
 112        OID_U32(DOT11_OID_BRIDGELOCAL, 0x15000000),
 113        OID_U32(DOT11_OID_CLIENTS, 0x15000001),
 114        OID_U32(DOT11_OID_CLIENTSASSOCIATED, 0x15000002),
 115        [DOT11_OID_CLIENTX] = {0x15000003, 2006, 0, 0}, /* DOT11_OID_CLIENTX,...DOT11_OID_CLIENT2007 */
 116
 117        OID_STRUCT(DOT11_OID_CLIENTFIND, 0x150007DB, u8[6], OID_TYPE_ADDR),
 118        OID_STRUCT(DOT11_OID_WDSLINKADD, 0x150007DC, u8[6], OID_TYPE_ADDR),
 119        OID_STRUCT(DOT11_OID_WDSLINKREMOVE, 0x150007DD, u8[6], OID_TYPE_ADDR),
 120        OID_STRUCT(DOT11_OID_EAPAUTHSTA, 0x150007DE, u8[6], OID_TYPE_ADDR),
 121        OID_STRUCT(DOT11_OID_EAPUNAUTHSTA, 0x150007DF, u8[6], OID_TYPE_ADDR),
 122        OID_U32_C(DOT11_OID_DOT1XENABLE, 0x150007E0),
 123        OID_UNKNOWN(DOT11_OID_MICFAILURE, 0x150007E1),
 124        OID_UNKNOWN(DOT11_OID_REKEYINDICATE, 0x150007E2),
 125
 126        OID_U32(DOT11_OID_MPDUTXSUCCESSFUL, 0x16000000),
 127        OID_U32(DOT11_OID_MPDUTXONERETRY, 0x16000001),
 128        OID_U32(DOT11_OID_MPDUTXMULTIPLERETRIES, 0x16000002),
 129        OID_U32(DOT11_OID_MPDUTXFAILED, 0x16000003),
 130        OID_U32(DOT11_OID_MPDURXSUCCESSFUL, 0x16000004),
 131        OID_U32(DOT11_OID_MPDURXDUPS, 0x16000005),
 132        OID_U32(DOT11_OID_RTSSUCCESSFUL, 0x16000006),
 133        OID_U32(DOT11_OID_RTSFAILED, 0x16000007),
 134        OID_U32(DOT11_OID_ACKFAILED, 0x16000008),
 135        OID_U32(DOT11_OID_FRAMERECEIVES, 0x16000009),
 136        OID_U32(DOT11_OID_FRAMEERRORS, 0x1600000A),
 137        OID_U32(DOT11_OID_FRAMEABORTS, 0x1600000B),
 138        OID_U32(DOT11_OID_FRAMEABORTSPHY, 0x1600000C),
 139
 140        OID_U32(DOT11_OID_SLOTTIME, 0x17000000),
 141        OID_U32(DOT11_OID_CWMIN, 0x17000001),
 142        OID_U32(DOT11_OID_CWMAX, 0x17000002),
 143        OID_U32(DOT11_OID_ACKWINDOW, 0x17000003),
 144        OID_U32(DOT11_OID_ANTENNARX, 0x17000004),
 145        OID_U32(DOT11_OID_ANTENNATX, 0x17000005),
 146        OID_U32(DOT11_OID_ANTENNADIVERSITY, 0x17000006),
 147        OID_U32_C(DOT11_OID_CHANNEL, 0x17000007),
 148        OID_U32_C(DOT11_OID_EDTHRESHOLD, 0x17000008),
 149        OID_U32(DOT11_OID_PREAMBLESETTINGS, 0x17000009),
 150        OID_STRUCT(DOT11_OID_RATES, 0x1700000A, u8[IWMAX_BITRATES + 1],
 151                   OID_TYPE_RAW),
 152        OID_U32(DOT11_OID_CCAMODESUPPORTED, 0x1700000B),
 153        OID_U32(DOT11_OID_CCAMODE, 0x1700000C),
 154        OID_UNKNOWN(DOT11_OID_RSSIVECTOR, 0x1700000D),
 155        OID_UNKNOWN(DOT11_OID_OUTPUTPOWERTABLE, 0x1700000E),
 156        OID_U32(DOT11_OID_OUTPUTPOWER, 0x1700000F),
 157        OID_STRUCT(DOT11_OID_SUPPORTEDRATES, 0x17000010,
 158                   u8[IWMAX_BITRATES + 1], OID_TYPE_RAW),
 159        OID_U32_C(DOT11_OID_FREQUENCY, 0x17000011),
 160        [DOT11_OID_SUPPORTEDFREQUENCIES] =
 161            {0x17000012, 0, sizeof (struct obj_frequencies)
 162             + sizeof (u16) * IWMAX_FREQ, OID_TYPE_FREQUENCIES},
 163
 164        OID_U32(DOT11_OID_NOISEFLOOR, 0x17000013),
 165        OID_STRUCT(DOT11_OID_FREQUENCYACTIVITY, 0x17000014, u8[IWMAX_FREQ + 1],
 166                   OID_TYPE_RAW),
 167        OID_UNKNOWN(DOT11_OID_IQCALIBRATIONTABLE, 0x17000015),
 168        OID_U32(DOT11_OID_NONERPPROTECTION, 0x17000016),
 169        OID_U32(DOT11_OID_SLOTSETTINGS, 0x17000017),
 170        OID_U32(DOT11_OID_NONERPTIMEOUT, 0x17000018),
 171        OID_U32(DOT11_OID_PROFILES, 0x17000019),
 172        OID_STRUCT(DOT11_OID_EXTENDEDRATES, 0x17000020,
 173                   u8[IWMAX_BITRATES + 1], OID_TYPE_RAW),
 174
 175        OID_STRUCT_MLME(DOT11_OID_DEAUTHENTICATE, 0x18000000),
 176        OID_STRUCT_MLME(DOT11_OID_AUTHENTICATE, 0x18000001),
 177        OID_STRUCT_MLME(DOT11_OID_DISASSOCIATE, 0x18000002),
 178        OID_STRUCT_MLME(DOT11_OID_ASSOCIATE, 0x18000003),
 179        OID_UNKNOWN(DOT11_OID_SCAN, 0x18000004),
 180        OID_STRUCT_MLMEEX(DOT11_OID_BEACON, 0x18000005),
 181        OID_STRUCT_MLMEEX(DOT11_OID_PROBE, 0x18000006),
 182        OID_STRUCT_MLMEEX(DOT11_OID_DEAUTHENTICATEEX, 0x18000007),
 183        OID_STRUCT_MLMEEX(DOT11_OID_AUTHENTICATEEX, 0x18000008),
 184        OID_STRUCT_MLMEEX(DOT11_OID_DISASSOCIATEEX, 0x18000009),
 185        OID_STRUCT_MLMEEX(DOT11_OID_ASSOCIATEEX, 0x1800000A),
 186        OID_STRUCT_MLMEEX(DOT11_OID_REASSOCIATE, 0x1800000B),
 187        OID_STRUCT_MLMEEX(DOT11_OID_REASSOCIATEEX, 0x1800000C),
 188
 189        OID_U32(DOT11_OID_NONERPSTATUS, 0x1E000000),
 190
 191        OID_U32(DOT11_OID_STATIMEOUT, 0x19000000),
 192        OID_U32_C(DOT11_OID_MLMEAUTOLEVEL, 0x19000001),
 193        OID_U32(DOT11_OID_BSSTIMEOUT, 0x19000002),
 194        [DOT11_OID_ATTACHMENT] = {0x19000003, 0,
 195                sizeof(struct obj_attachment), OID_TYPE_ATTACH},
 196        OID_STRUCT_C(DOT11_OID_PSMBUFFER, 0x19000004, struct obj_buffer,
 197                     OID_TYPE_BUFFER),
 198
 199        OID_U32(DOT11_OID_BSSS, 0x1C000000),
 200        [DOT11_OID_BSSX] = {0x1C000001, 63, sizeof (struct obj_bss),
 201                            OID_TYPE_BSS},      /*DOT11_OID_BSS1,...,DOT11_OID_BSS64 */
 202        OID_STRUCT(DOT11_OID_BSSFIND, 0x1C000042, struct obj_bss, OID_TYPE_BSS),
 203        [DOT11_OID_BSSLIST] = {0x1C000043, 0, sizeof (struct
 204                                                      obj_bsslist) +
 205                               sizeof (struct obj_bss[IWMAX_BSS]),
 206                               OID_TYPE_BSSLIST},
 207
 208        OID_UNKNOWN(OID_INL_TUNNEL, 0xFF020000),
 209        OID_UNKNOWN(OID_INL_MEMADDR, 0xFF020001),
 210        OID_UNKNOWN(OID_INL_MEMORY, 0xFF020002),
 211        OID_U32_C(OID_INL_MODE, 0xFF020003),
 212        OID_UNKNOWN(OID_INL_COMPONENT_NR, 0xFF020004),
 213        OID_STRUCT(OID_INL_VERSION, 0xFF020005, u8[8], OID_TYPE_RAW),
 214        OID_UNKNOWN(OID_INL_INTERFACE_ID, 0xFF020006),
 215        OID_UNKNOWN(OID_INL_COMPONENT_ID, 0xFF020007),
 216        OID_U32_C(OID_INL_CONFIG, 0xFF020008),
 217        OID_U32_C(OID_INL_DOT11D_CONFORMANCE, 0xFF02000C),
 218        OID_U32(OID_INL_PHYCAPABILITIES, 0xFF02000D),
 219        OID_U32_C(OID_INL_OUTPUTPOWER, 0xFF02000F),
 220
 221};
 222
 223int
 224mgt_init(islpci_private *priv)
 225{
 226        int i;
 227
 228        priv->mib = kcalloc(OID_NUM_LAST, sizeof (void *), GFP_KERNEL);
 229        if (!priv->mib)
 230                return -ENOMEM;
 231
 232        /* Alloc the cache */
 233        for (i = 0; i < OID_NUM_LAST; i++) {
 234                if (isl_oid[i].flags & OID_FLAG_CACHED) {
 235                        priv->mib[i] = kcalloc(isl_oid[i].size,
 236                                               (isl_oid[i].range + 1),
 237                                               GFP_KERNEL);
 238                        if (!priv->mib[i])
 239                                return -ENOMEM;
 240                } else
 241                        priv->mib[i] = NULL;
 242        }
 243
 244        init_rwsem(&priv->mib_sem);
 245        prism54_mib_init(priv);
 246
 247        return 0;
 248}
 249
 250void
 251mgt_clean(islpci_private *priv)
 252{
 253        int i;
 254
 255        if (!priv->mib)
 256                return;
 257        for (i = 0; i < OID_NUM_LAST; i++) {
 258                kfree(priv->mib[i]);
 259                priv->mib[i] = NULL;
 260        }
 261        kfree(priv->mib);
 262        priv->mib = NULL;
 263}
 264
 265void
 266mgt_le_to_cpu(int type, void *data)
 267{
 268        switch (type) {
 269        case OID_TYPE_U32:
 270                *(u32 *) data = le32_to_cpu(*(u32 *) data);
 271                break;
 272        case OID_TYPE_BUFFER:{
 273                        struct obj_buffer *buff = data;
 274                        buff->size = le32_to_cpu(buff->size);
 275                        buff->addr = le32_to_cpu(buff->addr);
 276                        break;
 277                }
 278        case OID_TYPE_BSS:{
 279                        struct obj_bss *bss = data;
 280                        bss->age = le16_to_cpu(bss->age);
 281                        bss->channel = le16_to_cpu(bss->channel);
 282                        bss->capinfo = le16_to_cpu(bss->capinfo);
 283                        bss->rates = le16_to_cpu(bss->rates);
 284                        bss->basic_rates = le16_to_cpu(bss->basic_rates);
 285                        break;
 286                }
 287        case OID_TYPE_BSSLIST:{
 288                        struct obj_bsslist *list = data;
 289                        int i;
 290                        list->nr = le32_to_cpu(list->nr);
 291                        for (i = 0; i < list->nr; i++)
 292                                mgt_le_to_cpu(OID_TYPE_BSS, &list->bsslist[i]);
 293                        break;
 294                }
 295        case OID_TYPE_FREQUENCIES:{
 296                        struct obj_frequencies *freq = data;
 297                        int i;
 298                        freq->nr = le16_to_cpu(freq->nr);
 299                        for (i = 0; i < freq->nr; i++)
 300                                freq->mhz[i] = le16_to_cpu(freq->mhz[i]);
 301                        break;
 302                }
 303        case OID_TYPE_MLME:{
 304                        struct obj_mlme *mlme = data;
 305                        mlme->id = le16_to_cpu(mlme->id);
 306                        mlme->state = le16_to_cpu(mlme->state);
 307                        mlme->code = le16_to_cpu(mlme->code);
 308                        break;
 309                }
 310        case OID_TYPE_MLMEEX:{
 311                        struct obj_mlmeex *mlme = data;
 312                        mlme->id = le16_to_cpu(mlme->id);
 313                        mlme->state = le16_to_cpu(mlme->state);
 314                        mlme->code = le16_to_cpu(mlme->code);
 315                        mlme->size = le16_to_cpu(mlme->size);
 316                        break;
 317                }
 318        case OID_TYPE_ATTACH:{
 319                        struct obj_attachment *attach = data;
 320                        attach->id = le16_to_cpu(attach->id);
 321                        attach->size = le16_to_cpu(attach->size);
 322                        break;
 323        }
 324        case OID_TYPE_SSID:
 325        case OID_TYPE_KEY:
 326        case OID_TYPE_ADDR:
 327        case OID_TYPE_RAW:
 328                break;
 329        default:
 330                BUG();
 331        }
 332}
 333
 334static void
 335mgt_cpu_to_le(int type, void *data)
 336{
 337        switch (type) {
 338        case OID_TYPE_U32:
 339                *(u32 *) data = cpu_to_le32(*(u32 *) data);
 340                break;
 341        case OID_TYPE_BUFFER:{
 342                        struct obj_buffer *buff = data;
 343                        buff->size = cpu_to_le32(buff->size);
 344                        buff->addr = cpu_to_le32(buff->addr);
 345                        break;
 346                }
 347        case OID_TYPE_BSS:{
 348                        struct obj_bss *bss = data;
 349                        bss->age = cpu_to_le16(bss->age);
 350                        bss->channel = cpu_to_le16(bss->channel);
 351                        bss->capinfo = cpu_to_le16(bss->capinfo);
 352                        bss->rates = cpu_to_le16(bss->rates);
 353                        bss->basic_rates = cpu_to_le16(bss->basic_rates);
 354                        break;
 355                }
 356        case OID_TYPE_BSSLIST:{
 357                        struct obj_bsslist *list = data;
 358                        int i;
 359                        list->nr = cpu_to_le32(list->nr);
 360                        for (i = 0; i < list->nr; i++)
 361                                mgt_cpu_to_le(OID_TYPE_BSS, &list->bsslist[i]);
 362                        break;
 363                }
 364        case OID_TYPE_FREQUENCIES:{
 365                        struct obj_frequencies *freq = data;
 366                        int i;
 367                        freq->nr = cpu_to_le16(freq->nr);
 368                        for (i = 0; i < freq->nr; i++)
 369                                freq->mhz[i] = cpu_to_le16(freq->mhz[i]);
 370                        break;
 371                }
 372        case OID_TYPE_MLME:{
 373                        struct obj_mlme *mlme = data;
 374                        mlme->id = cpu_to_le16(mlme->id);
 375                        mlme->state = cpu_to_le16(mlme->state);
 376                        mlme->code = cpu_to_le16(mlme->code);
 377                        break;
 378                }
 379        case OID_TYPE_MLMEEX:{
 380                        struct obj_mlmeex *mlme = data;
 381                        mlme->id = cpu_to_le16(mlme->id);
 382                        mlme->state = cpu_to_le16(mlme->state);
 383                        mlme->code = cpu_to_le16(mlme->code);
 384                        mlme->size = cpu_to_le16(mlme->size);
 385                        break;
 386                }
 387        case OID_TYPE_ATTACH:{
 388                        struct obj_attachment *attach = data;
 389                        attach->id = cpu_to_le16(attach->id);
 390                        attach->size = cpu_to_le16(attach->size);
 391                        break;
 392        }
 393        case OID_TYPE_SSID:
 394        case OID_TYPE_KEY:
 395        case OID_TYPE_ADDR:
 396        case OID_TYPE_RAW:
 397                break;
 398        default:
 399                BUG();
 400        }
 401}
 402
 403/* Note : data is modified during this function */
 404
 405int
 406mgt_set_request(islpci_private *priv, enum oid_num_t n, int extra, void *data)
 407{
 408        int ret = 0;
 409        struct islpci_mgmtframe *response = NULL;
 410        int response_op = PIMFOR_OP_ERROR;
 411        int dlen;
 412        void *cache, *_data = data;
 413        u32 oid;
 414
 415        BUG_ON(n >= OID_NUM_LAST);
 416        BUG_ON(extra > isl_oid[n].range);
 417
 418        if (!priv->mib)
 419                /* memory has been freed */
 420                return -1;
 421
 422        dlen = isl_oid[n].size;
 423        cache = priv->mib[n];
 424        cache += (cache ? extra * dlen : 0);
 425        oid = isl_oid[n].oid + extra;
 426
 427        if (_data == NULL)
 428                /* we are requested to re-set a cached value */
 429                _data = cache;
 430        else
 431                mgt_cpu_to_le(isl_oid[n].flags & OID_FLAG_TYPE, _data);
 432        /* If we are going to write to the cache, we don't want anyone to read
 433         * it -> acquire write lock.
 434         * Else we could acquire a read lock to be sure we don't bother the
 435         * commit process (which takes a write lock). But I'm not sure if it's
 436         * needed.
 437         */
 438        if (cache)
 439                down_write(&priv->mib_sem);
 440
 441        if (islpci_get_state(priv) >= PRV_STATE_READY) {
 442                ret = islpci_mgt_transaction(priv->ndev, PIMFOR_OP_SET, oid,
 443                                             _data, dlen, &response);
 444                if (!ret) {
 445                        response_op = response->header->operation;
 446                        islpci_mgt_release(response);
 447                }
 448                if (ret || response_op == PIMFOR_OP_ERROR)
 449                        ret = -EIO;
 450        } else if (!cache)
 451                ret = -EIO;
 452
 453        if (cache) {
 454                if (!ret && data)
 455                        memcpy(cache, _data, dlen);
 456                up_write(&priv->mib_sem);
 457        }
 458
 459        /* re-set given data to what it was */
 460        if (data)
 461                mgt_le_to_cpu(isl_oid[n].flags & OID_FLAG_TYPE, data);
 462
 463        return ret;
 464}
 465
 466/* None of these are cached */
 467int
 468mgt_set_varlen(islpci_private *priv, enum oid_num_t n, void *data, int extra_len)
 469{
 470        int ret = 0;
 471        struct islpci_mgmtframe *response;
 472        int response_op = PIMFOR_OP_ERROR;
 473        int dlen;
 474        u32 oid;
 475
 476        BUG_ON(n >= OID_NUM_LAST);
 477
 478        dlen = isl_oid[n].size;
 479        oid = isl_oid[n].oid;
 480
 481        mgt_cpu_to_le(isl_oid[n].flags & OID_FLAG_TYPE, data);
 482
 483        if (islpci_get_state(priv) >= PRV_STATE_READY) {
 484                ret = islpci_mgt_transaction(priv->ndev, PIMFOR_OP_SET, oid,
 485                                             data, dlen + extra_len, &response);
 486                if (!ret) {
 487                        response_op = response->header->operation;
 488                        islpci_mgt_release(response);
 489                }
 490                if (ret || response_op == PIMFOR_OP_ERROR)
 491                        ret = -EIO;
 492        } else
 493                ret = -EIO;
 494
 495        /* re-set given data to what it was */
 496        if (data)
 497                mgt_le_to_cpu(isl_oid[n].flags & OID_FLAG_TYPE, data);
 498
 499        return ret;
 500}
 501
 502int
 503mgt_get_request(islpci_private *priv, enum oid_num_t n, int extra, void *data,
 504                union oid_res_t *res)
 505{
 506
 507        int ret = -EIO;
 508        int reslen = 0;
 509        struct islpci_mgmtframe *response = NULL;
 510
 511        int dlen;
 512        void *cache, *_res = NULL;
 513        u32 oid;
 514
 515        BUG_ON(n >= OID_NUM_LAST);
 516        BUG_ON(extra > isl_oid[n].range);
 517
 518        res->ptr = NULL;
 519
 520        if (!priv->mib)
 521                /* memory has been freed */
 522                return -1;
 523
 524        dlen = isl_oid[n].size;
 525        cache = priv->mib[n];
 526        cache += cache ? extra * dlen : 0;
 527        oid = isl_oid[n].oid + extra;
 528        reslen = dlen;
 529
 530        if (cache)
 531                down_read(&priv->mib_sem);
 532
 533        if (islpci_get_state(priv) >= PRV_STATE_READY) {
 534                ret = islpci_mgt_transaction(priv->ndev, PIMFOR_OP_GET,
 535                                             oid, data, dlen, &response);
 536                if (ret || !response ||
 537                    response->header->operation == PIMFOR_OP_ERROR) {
 538                        if (response)
 539                                islpci_mgt_release(response);
 540                        ret = -EIO;
 541                }
 542                if (!ret) {
 543                        _res = response->data;
 544                        reslen = response->header->length;
 545                }
 546        } else if (cache) {
 547                _res = cache;
 548                ret = 0;
 549        }
 550        if ((isl_oid[n].flags & OID_FLAG_TYPE) == OID_TYPE_U32)
 551                res->u = ret ? 0 : le32_to_cpu(*(u32 *) _res);
 552        else {
 553                res->ptr = kmalloc(reslen, GFP_KERNEL);
 554                BUG_ON(res->ptr == NULL);
 555                if (ret)
 556                        memset(res->ptr, 0, reslen);
 557                else {
 558                        memcpy(res->ptr, _res, reslen);
 559                        mgt_le_to_cpu(isl_oid[n].flags & OID_FLAG_TYPE,
 560                                      res->ptr);
 561                }
 562        }
 563        if (cache)
 564                up_read(&priv->mib_sem);
 565
 566        if (response && !ret)
 567                islpci_mgt_release(response);
 568
 569        if (reslen > isl_oid[n].size)
 570                printk(KERN_DEBUG
 571                       "mgt_get_request(0x%x): received data length was bigger "
 572                       "than expected (%d > %d). Memory is probably corrupted...",
 573                       oid, reslen, isl_oid[n].size);
 574
 575        return ret;
 576}
 577
 578/* lock outside */
 579int
 580mgt_commit_list(islpci_private *priv, enum oid_num_t *l, int n)
 581{
 582        int i, ret = 0;
 583        struct islpci_mgmtframe *response;
 584
 585        for (i = 0; i < n; i++) {
 586                struct oid_t *t = &(isl_oid[l[i]]);
 587                void *data = priv->mib[l[i]];
 588                int j = 0;
 589                u32 oid = t->oid;
 590                BUG_ON(data == NULL);
 591                while (j <= t->range) {
 592                        int r = islpci_mgt_transaction(priv->ndev, PIMFOR_OP_SET,
 593                                                      oid, data, t->size,
 594                                                      &response);
 595                        if (response) {
 596                                r |= (response->header->operation == PIMFOR_OP_ERROR);
 597                                islpci_mgt_release(response);
 598                        }
 599                        if (r)
 600                                printk(KERN_ERR "%s: mgt_commit_list: failure. "
 601                                        "oid=%08x err=%d\n",
 602                                        priv->ndev->name, oid, r);
 603                        ret |= r;
 604                        j++;
 605                        oid++;
 606                        data += t->size;
 607                }
 608        }
 609        return ret;
 610}
 611
 612/* Lock outside */
 613
 614void
 615mgt_set(islpci_private *priv, enum oid_num_t n, void *data)
 616{
 617        BUG_ON(n >= OID_NUM_LAST);
 618        BUG_ON(priv->mib[n] == NULL);
 619
 620        memcpy(priv->mib[n], data, isl_oid[n].size);
 621        mgt_cpu_to_le(isl_oid[n].flags & OID_FLAG_TYPE, priv->mib[n]);
 622}
 623
 624void
 625mgt_get(islpci_private *priv, enum oid_num_t n, void *res)
 626{
 627        BUG_ON(n >= OID_NUM_LAST);
 628        BUG_ON(priv->mib[n] == NULL);
 629        BUG_ON(res == NULL);
 630
 631        memcpy(res, priv->mib[n], isl_oid[n].size);
 632        mgt_le_to_cpu(isl_oid[n].flags & OID_FLAG_TYPE, res);
 633}
 634
 635/* Commits the cache. Lock outside. */
 636
 637static enum oid_num_t commit_part1[] = {
 638        OID_INL_CONFIG,
 639        OID_INL_MODE,
 640        DOT11_OID_BSSTYPE,
 641        DOT11_OID_CHANNEL,
 642        DOT11_OID_MLMEAUTOLEVEL
 643};
 644
 645static enum oid_num_t commit_part2[] = {
 646        DOT11_OID_SSID,
 647        DOT11_OID_PSMBUFFER,
 648        DOT11_OID_AUTHENABLE,
 649        DOT11_OID_PRIVACYINVOKED,
 650        DOT11_OID_EXUNENCRYPTED,
 651        DOT11_OID_DEFKEYX,      /* MULTIPLE */
 652        DOT11_OID_DEFKEYID,
 653        DOT11_OID_DOT1XENABLE,
 654        OID_INL_DOT11D_CONFORMANCE,
 655        /* Do not initialize this - fw < 1.0.4.3 rejects it
 656        OID_INL_OUTPUTPOWER,
 657        */
 658};
 659
 660/* update the MAC addr. */
 661static int
 662mgt_update_addr(islpci_private *priv)
 663{
 664        struct islpci_mgmtframe *res;
 665        int ret;
 666
 667        ret = islpci_mgt_transaction(priv->ndev, PIMFOR_OP_GET,
 668                                     isl_oid[GEN_OID_MACADDRESS].oid, NULL,
 669                                     isl_oid[GEN_OID_MACADDRESS].size, &res);
 670
 671        if ((ret == 0) && res && (res->header->operation != PIMFOR_OP_ERROR))
 672                memcpy(priv->ndev->dev_addr, res->data, ETH_ALEN);
 673        else
 674                ret = -EIO;
 675        if (res)
 676                islpci_mgt_release(res);
 677
 678        if (ret)
 679                printk(KERN_ERR "%s: mgt_update_addr: failure\n", priv->ndev->name);
 680        return ret;
 681}
 682
 683int
 684mgt_commit(islpci_private *priv)
 685{
 686        int rvalue;
 687        enum oid_num_t u;
 688
 689        if (islpci_get_state(priv) < PRV_STATE_INIT)
 690                return 0;
 691
 692        rvalue = mgt_commit_list(priv, commit_part1, ARRAY_SIZE(commit_part1));
 693
 694        if (priv->iw_mode != IW_MODE_MONITOR)
 695                rvalue |= mgt_commit_list(priv, commit_part2, ARRAY_SIZE(commit_part2));
 696
 697        u = OID_INL_MODE;
 698        rvalue |= mgt_commit_list(priv, &u, 1);
 699        rvalue |= mgt_update_addr(priv);
 700
 701        if (rvalue) {
 702                /* some request have failed. The device might be in an
 703                   incoherent state. We should reset it ! */
 704                printk(KERN_DEBUG "%s: mgt_commit: failure\n", priv->ndev->name);
 705        }
 706        return rvalue;
 707}
 708
 709/* The following OIDs need to be "unlatched":
 710 *
 711 * MEDIUMLIMIT,BEACONPERIOD,DTIMPERIOD,ATIMWINDOW,LISTENINTERVAL
 712 * FREQUENCY,EXTENDEDRATES.
 713 *
 714 * The way to do this is to set ESSID. Note though that they may get
 715 * unlatch before though by setting another OID. */
 716#if 0
 717void
 718mgt_unlatch_all(islpci_private *priv)
 719{
 720        u32 u;
 721        int rvalue = 0;
 722
 723        if (islpci_get_state(priv) < PRV_STATE_INIT)
 724                return;
 725
 726        u = DOT11_OID_SSID;
 727        rvalue = mgt_commit_list(priv, &u, 1);
 728        /* Necessary if in MANUAL RUN mode? */
 729#if 0
 730        u = OID_INL_MODE;
 731        rvalue |= mgt_commit_list(priv, &u, 1);
 732
 733        u = DOT11_OID_MLMEAUTOLEVEL;
 734        rvalue |= mgt_commit_list(priv, &u, 1);
 735
 736        u = OID_INL_MODE;
 737        rvalue |= mgt_commit_list(priv, &u, 1);
 738#endif
 739
 740        if (rvalue)
 741                printk(KERN_DEBUG "%s: Unlatching OIDs failed\n", priv->ndev->name);
 742}
 743#endif
 744
 745/* This will tell you if you are allowed to answer a mlme(ex) request .*/
 746
 747int
 748mgt_mlme_answer(islpci_private *priv)
 749{
 750        u32 mlmeautolevel;
 751        /* Acquire a read lock because if we are in a mode change, it's
 752         * possible to answer true, while the card is leaving master to managed
 753         * mode. Answering to a mlme in this situation could hang the card.
 754         */
 755        down_read(&priv->mib_sem);
 756        mlmeautolevel =
 757            le32_to_cpu(*(u32 *) priv->mib[DOT11_OID_MLMEAUTOLEVEL]);
 758        up_read(&priv->mib_sem);
 759
 760        return ((priv->iw_mode == IW_MODE_MASTER) &&
 761                (mlmeautolevel >= DOT11_MLME_INTERMEDIATE));
 762}
 763
 764enum oid_num_t
 765mgt_oidtonum(u32 oid)
 766{
 767        int i;
 768
 769        for (i = 0; i < OID_NUM_LAST; i++)
 770                if (isl_oid[i].oid == oid)
 771                        return i;
 772
 773        printk(KERN_DEBUG "looking for an unknown oid 0x%x", oid);
 774
 775        return OID_NUM_LAST;
 776}
 777
 778int
 779mgt_response_to_str(enum oid_num_t n, union oid_res_t *r, char *str)
 780{
 781        switch (isl_oid[n].flags & OID_FLAG_TYPE) {
 782        case OID_TYPE_U32:
 783                return snprintf(str, PRIV_STR_SIZE, "%u\n", r->u);
 784        case OID_TYPE_BUFFER:{
 785                        struct obj_buffer *buff = r->ptr;
 786                        return snprintf(str, PRIV_STR_SIZE,
 787                                        "size=%u\naddr=0x%X\n", buff->size,
 788                                        buff->addr);
 789                }
 790                break;
 791        case OID_TYPE_BSS:{
 792                        struct obj_bss *bss = r->ptr;
 793                        return snprintf(str, PRIV_STR_SIZE,
 794                                        "age=%u\nchannel=%u\n"
 795                                        "capinfo=0x%X\nrates=0x%X\n"
 796                                        "basic_rates=0x%X\n", bss->age,
 797                                        bss->channel, bss->capinfo,
 798                                        bss->rates, bss->basic_rates);
 799                }
 800                break;
 801        case OID_TYPE_BSSLIST:{
 802                        struct obj_bsslist *list = r->ptr;
 803                        int i, k;
 804                        k = snprintf(str, PRIV_STR_SIZE, "nr=%u\n", list->nr);
 805                        for (i = 0; i < list->nr; i++)
 806                                k += snprintf(str + k, PRIV_STR_SIZE - k,
 807                                              "bss[%u] :\nage=%u\nchannel=%u\n"
 808                                              "capinfo=0x%X\nrates=0x%X\n"
 809                                              "basic_rates=0x%X\n",
 810                                              i, list->bsslist[i].age,
 811                                              list->bsslist[i].channel,
 812                                              list->bsslist[i].capinfo,
 813                                              list->bsslist[i].rates,
 814                                              list->bsslist[i].basic_rates);
 815                        return k;
 816                }
 817                break;
 818        case OID_TYPE_FREQUENCIES:{
 819                        struct obj_frequencies *freq = r->ptr;
 820                        int i, t;
 821                        printk("nr : %u\n", freq->nr);
 822                        t = snprintf(str, PRIV_STR_SIZE, "nr=%u\n", freq->nr);
 823                        for (i = 0; i < freq->nr; i++)
 824                                t += snprintf(str + t, PRIV_STR_SIZE - t,
 825                                              "mhz[%u]=%u\n", i, freq->mhz[i]);
 826                        return t;
 827                }
 828                break;
 829        case OID_TYPE_MLME:{
 830                        struct obj_mlme *mlme = r->ptr;
 831                        return snprintf(str, PRIV_STR_SIZE,
 832                                        "id=0x%X\nstate=0x%X\ncode=0x%X\n",
 833                                        mlme->id, mlme->state, mlme->code);
 834                }
 835                break;
 836        case OID_TYPE_MLMEEX:{
 837                        struct obj_mlmeex *mlme = r->ptr;
 838                        return snprintf(str, PRIV_STR_SIZE,
 839                                        "id=0x%X\nstate=0x%X\n"
 840                                        "code=0x%X\nsize=0x%X\n", mlme->id,
 841                                        mlme->state, mlme->code, mlme->size);
 842                }
 843                break;
 844        case OID_TYPE_ATTACH:{
 845                        struct obj_attachment *attach = r->ptr;
 846                        return snprintf(str, PRIV_STR_SIZE,
 847                                        "id=%d\nsize=%d\n",
 848                                        attach->id,
 849                                        attach->size);
 850                }
 851                break;
 852        case OID_TYPE_SSID:{
 853                        struct obj_ssid *ssid = r->ptr;
 854                        return snprintf(str, PRIV_STR_SIZE,
 855                                        "length=%u\noctets=%.*s\n",
 856                                        ssid->length, ssid->length,
 857                                        ssid->octets);
 858                }
 859                break;
 860        case OID_TYPE_KEY:{
 861                        struct obj_key *key = r->ptr;
 862                        int t, i;
 863                        t = snprintf(str, PRIV_STR_SIZE,
 864                                     "type=0x%X\nlength=0x%X\nkey=0x",
 865                                     key->type, key->length);
 866                        for (i = 0; i < key->length; i++)
 867                                t += snprintf(str + t, PRIV_STR_SIZE - t,
 868                                              "%02X:", key->key[i]);
 869                        t += snprintf(str + t, PRIV_STR_SIZE - t, "\n");
 870                        return t;
 871                }
 872                break;
 873        case OID_TYPE_RAW:
 874        case OID_TYPE_ADDR:{
 875                        unsigned char *buff = r->ptr;
 876                        int t, i;
 877                        t = snprintf(str, PRIV_STR_SIZE, "hex data=");
 878                        for (i = 0; i < isl_oid[n].size; i++)
 879                                t += snprintf(str + t, PRIV_STR_SIZE - t,
 880                                              "%02X:", buff[i]);
 881                        t += snprintf(str + t, PRIV_STR_SIZE - t, "\n");
 882                        return t;
 883                }
 884                break;
 885        default:
 886                BUG();
 887        }
 888        return 0;
 889}
 890