drivers/bus/dpaa/base/fman/fman.c

   1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   2  *
   3  * Copyright 2010-2016 Freescale Semiconductor Inc.
   4  * Copyright 2017-2020 NXP
   5  *
   6  */
   7
   8 #include <sys/types.h>
   9 #include <sys/ioctl.h>
  10 #include <ifaddrs.h>
  11
  12 /* This header declares the driver interface we implement */
  13 #include <fman.h>
  14 #include <dpaa_of.h>
  15 #include <rte_malloc.h>
  16 #include <rte_dpaa_logs.h>
  17 #include <rte_string_fns.h>
  18
  19 #define QMI_PORT_REGS_OFFSET            0x400
  20
  21 /* CCSR map address to access ccsr based register */
  22 void *fman_ccsr_map;
  23 /* fman version info */
  24 u16 fman_ip_rev;
  25 static int get_once;
  26 u32 fman_dealloc_bufs_mask_hi;
  27 u32 fman_dealloc_bufs_mask_lo;
  28
  29 int fman_ccsr_map_fd = -1;
  30 static COMPAT_LIST_HEAD(__ifs);
  31
  32 /* This is the (const) global variable that callers have read-only access to.
  33  * Internally, we have read-write access directly to __ifs.
  34  */
  35 const struct list_head *fman_if_list = &__ifs;
  36
  37 static void
  38 if_destructor(struct __fman_if *__if)
  39 {
  40         struct fman_if_bpool *bp, *tmpbp;
  41
  42         if (!__if)
  43                 return;
  44
  45         if (__if->__if.mac_type == fman_offline)
  46                 goto cleanup;
  47
  48         list_for_each_entry_safe(bp, tmpbp, &__if->__if.bpool_list, node) {
  49                 list_del(&bp->node);
  50                 free(bp);
  51         }
  52 cleanup:
  53         free(__if);
  54 }
  55
  56 static int
  57 fman_get_ip_rev(const struct device_node *fman_node)
  58 {
  59         const uint32_t *fman_addr;
  60         uint64_t phys_addr;
  61         uint64_t regs_size;
  62         uint32_t ip_rev_1;
  63         int _errno;
  64
  65         fman_addr = of_get_address(fman_node, 0, &regs_size, NULL);
  66         if (!fman_addr) {
  67                 pr_err("of_get_address cannot return fman address\n");
  68                 return -EINVAL;
  69         }
  70         phys_addr = of_translate_address(fman_node, fman_addr);
  71         if (!phys_addr) {
  72                 pr_err("of_translate_address failed\n");
  73                 return -EINVAL;
  74         }
  75         fman_ccsr_map = mmap(NULL, regs_size, PROT_READ | PROT_WRITE,
  76                              MAP_SHARED, fman_ccsr_map_fd, phys_addr);
  77         if (fman_ccsr_map == MAP_FAILED) {
  78                 pr_err("Can not map FMan ccsr base");
  79                 return -EINVAL;
  80         }
  81
  82         ip_rev_1 = in_be32(fman_ccsr_map + FMAN_IP_REV_1);
  83         fman_ip_rev = (ip_rev_1 & FMAN_IP_REV_1_MAJOR_MASK) >>
  84                         FMAN_IP_REV_1_MAJOR_SHIFT;
  85
  86         _errno = munmap(fman_ccsr_map, regs_size);
  87         if (_errno)
  88                 pr_err("munmap() of FMan ccsr failed");
  89
  90         return 0;
  91 }
  92
  93 static int
  94 fman_get_mac_index(uint64_t regs_addr_host, uint8_t *mac_idx)
  95 {
  96         int ret = 0;
  97
  98         /*
  99          * MAC1 : E_0000h
 100          * MAC2 : E_2000h
 101          * MAC3 : E_4000h
 102          * MAC4 : E_6000h
 103          * MAC5 : E_8000h
 104          * MAC6 : E_A000h
 105          * MAC7 : E_C000h
 106          * MAC8 : E_E000h
 107          * MAC9 : F_0000h
 108          * MAC10: F_2000h
 109          */
 110         switch (regs_addr_host) {
 111         case 0xE0000:
 112                 *mac_idx = 1;
 113                 break;
 114         case 0xE2000:
 115                 *mac_idx = 2;
 116                 break;
 117         case 0xE4000:
 118                 *mac_idx = 3;
 119                 break;
 120         case 0xE6000:
 121                 *mac_idx = 4;
 122                 break;
 123         case 0xE8000:
 124                 *mac_idx = 5;
 125                 break;
 126         case 0xEA000:
 127                 *mac_idx = 6;
 128                 break;
 129         case 0xEC000:
 130                 *mac_idx = 7;
 131                 break;
 132         case 0xEE000:
 133                 *mac_idx = 8;
 134                 break;
 135         case 0xF0000:
 136                 *mac_idx = 9;
 137                 break;
 138         case 0xF2000:
 139                 *mac_idx = 10;
 140                 break;
 141         default:
 142                 ret = -EINVAL;
 143         }
 144
 145         return ret;
 146 }
 147
 148 static void fman_if_vsp_init(struct __fman_if *__if)
 149 {
 150         const phandle *prop;
 151         int cell_index;
 152         const struct device_node *dev;
 153         size_t lenp;
 154         const uint8_t mac_idx[] = {-1, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1};
 155
 156         if (__if->__if.mac_type == fman_mac_1g) {
 157                 for_each_compatible_node(dev, NULL,
 158                         "fsl,fman-port-1g-rx-extended-args") {
 159                         prop = of_get_property(dev, "cell-index", &lenp);
 160                         if (prop) {
 161                                 cell_index = of_read_number(
 162                                                 &prop[0],
 163                                                 lenp / sizeof(phandle));
 164                                 if (cell_index == mac_idx[__if->__if.mac_idx]) {
 165                                         prop = of_get_property(
 166                                                         dev,
 167                                                         "vsp-window", &lenp);
 168                                         if (prop) {
 169                                                 __if->__if.num_profiles =
 170                                                         of_read_number(
 171                                                                 &prop[0], 1);
 172                                                 __if->__if.base_profile_id =
 173                                                         of_read_number(
 174                                                                 &prop[1], 1);
 175                                         }
 176                                 }
 177                         }
 178                 }
 179         } else if (__if->__if.mac_type == fman_mac_10g) {
 180                 for_each_compatible_node(dev, NULL,
 181                         "fsl,fman-port-10g-rx-extended-args") {
 182                         prop = of_get_property(dev, "cell-index", &lenp);
 183                         if (prop) {
 184                                 cell_index = of_read_number(
 185                                         &prop[0], lenp / sizeof(phandle));
 186                                 if (cell_index == mac_idx[__if->__if.mac_idx]) {
 187                                         prop = of_get_property(
 188                                                 dev, "vsp-window", &lenp);
 189                                         if (prop) {
 190                                                 __if->__if.num_profiles =
 191                                                         of_read_number(
 192                                                                 &prop[0], 1);
 193                                                 __if->__if.base_profile_id =
 194                                                         of_read_number(
 195                                                                 &prop[1], 1);
 196                                         }
 197                                 }
 198                         }
 199                 }
 200         }
 201 }
 202
 203 static int
 204 fman_if_init(const struct device_node *dpa_node)
 205 {
 206         const char *rprop, *mprop;
 207         uint64_t phys_addr;
 208         struct __fman_if *__if;
 209         struct fman_if_bpool *bpool;
 210
 211         const phandle *mac_phandle, *ports_phandle, *pools_phandle;
 212         const phandle *tx_channel_id = NULL, *mac_addr, *cell_idx;
 213         const phandle *rx_phandle, *tx_phandle;
 214         uint64_t tx_phandle_host[4] = {0};
 215         uint64_t rx_phandle_host[4] = {0};
 216         uint64_t regs_addr_host = 0;
 217         uint64_t cell_idx_host = 0;
 218
 219         const struct device_node *mac_node = NULL, *tx_node;
 220         const struct device_node *pool_node, *fman_node, *rx_node;
 221         const uint32_t *regs_addr = NULL;
 222         const char *mname, *fname;
 223         const char *dname = dpa_node->full_name;
 224         size_t lenp;
 225         int _errno, is_shared = 0;
 226         const char *char_prop;
 227         uint32_t na;
 228
 229         if (of_device_is_available(dpa_node) == false)
 230                 return 0;
 231
 232         if (!of_device_is_compatible(dpa_node, "fsl,dpa-ethernet-init") &&
 233                 !of_device_is_compatible(dpa_node, "fsl,dpa-ethernet-shared")) {
 234                 return 0;
 235         }
 236
 237         if (of_device_is_compatible(dpa_node, "fsl,dpa-ethernet-shared"))
 238                 is_shared = 1;
 239
 240         rprop = "fsl,qman-frame-queues-rx";
 241         mprop = "fsl,fman-mac";
 242
 243         /* Allocate an object for this network interface */
 244         __if = rte_malloc(NULL, sizeof(*__if), RTE_CACHE_LINE_SIZE);
 245         if (!__if) {
 246                 FMAN_ERR(-ENOMEM, "malloc(%zu)\n", sizeof(*__if));
 247                 goto err;
 248         }
 249         memset(__if, 0, sizeof(*__if));
 250         INIT_LIST_HEAD(&__if->__if.bpool_list);
 251         strlcpy(__if->node_name, dpa_node->name, IF_NAME_MAX_LEN - 1);
 252         __if->node_name[IF_NAME_MAX_LEN - 1] = '\0';
 253         strlcpy(__if->node_path, dpa_node->full_name, PATH_MAX - 1);
 254         __if->node_path[PATH_MAX - 1] = '\0';
 255
 256         /* Obtain the MAC node used by this interface except macless */
 257         mac_phandle = of_get_property(dpa_node, mprop, &lenp);
 258         if (!mac_phandle) {
 259                 FMAN_ERR(-EINVAL, "%s: no %s\n", dname, mprop);
 260                 goto err;
 261         }
 262         assert(lenp == sizeof(phandle));
 263         mac_node = of_find_node_by_phandle(*mac_phandle);
 264         if (!mac_node) {
 265                 FMAN_ERR(-ENXIO, "%s: bad 'fsl,fman-mac\n", dname);
 266                 goto err;
 267         }
 268         mname = mac_node->full_name;
 269
 270         /* Map the CCSR regs for the MAC node */
 271         regs_addr = of_get_address(mac_node, 0, &__if->regs_size, NULL);
 272         if (!regs_addr) {
 273                 FMAN_ERR(-EINVAL, "of_get_address(%s)\n", mname);
 274                 goto err;
 275         }
 276         phys_addr = of_translate_address(mac_node, regs_addr);
 277         if (!phys_addr) {
 278                 FMAN_ERR(-EINVAL, "of_translate_address(%s, %p)\n",
 279                          mname, regs_addr);
 280                 goto err;
 281         }
 282         __if->ccsr_map = mmap(NULL, __if->regs_size,
 283                               PROT_READ | PROT_WRITE, MAP_SHARED,
 284                               fman_ccsr_map_fd, phys_addr);
 285         if (__if->ccsr_map == MAP_FAILED) {
 286                 FMAN_ERR(-errno, "mmap(0x%"PRIx64")\n", phys_addr);
 287                 goto err;
 288         }
 289         na = of_n_addr_cells(mac_node);
 290         /* Get rid of endianness (issues). Convert to host byte order */
 291         regs_addr_host = of_read_number(regs_addr, na);
 292
 293
 294         /* Get the index of the Fman this i/f belongs to */
 295         fman_node = of_get_parent(mac_node);
 296         na = of_n_addr_cells(mac_node);
 297         if (!fman_node) {
 298                 FMAN_ERR(-ENXIO, "of_get_parent(%s)\n", mname);
 299                 goto err;
 300         }
 301         fname = fman_node->full_name;
 302         cell_idx = of_get_property(fman_node, "cell-index", &lenp);
 303         if (!cell_idx) {
 304                 FMAN_ERR(-ENXIO, "%s: no cell-index)\n", fname);
 305                 goto err;
 306         }
 307         assert(lenp == sizeof(*cell_idx));
 308         cell_idx_host = of_read_number(cell_idx, lenp / sizeof(phandle));
 309         __if->__if.fman_idx = cell_idx_host;
 310         if (!get_once) {
 311                 _errno = fman_get_ip_rev(fman_node);
 312                 if (_errno) {
 313                         FMAN_ERR(-ENXIO, "%s: ip_rev is not available\n",
 314                                  fname);
 315                         goto err;
 316                 }
 317         }
 318
 319         if (fman_ip_rev >= FMAN_V3) {
 320                 /*
 321                  * Set A2V, OVOM, EBD bits in contextA to allow external
 322                  * buffer deallocation by fman.
 323                  */
 324                 fman_dealloc_bufs_mask_hi = FMAN_V3_CONTEXTA_EN_A2V |
 325                                                 FMAN_V3_CONTEXTA_EN_OVOM;
 326                 fman_dealloc_bufs_mask_lo = FMAN_V3_CONTEXTA_EN_EBD;
 327         } else {
 328                 fman_dealloc_bufs_mask_hi = 0;
 329                 fman_dealloc_bufs_mask_lo = 0;
 330         }
 331         /* Is the MAC node 1G, 2.5G, 10G? */
 332         __if->__if.is_memac = 0;
 333
 334         if (of_device_is_compatible(mac_node, "fsl,fman-1g-mac"))
 335                 __if->__if.mac_type = fman_mac_1g;
 336         else if (of_device_is_compatible(mac_node, "fsl,fman-10g-mac"))
 337                 __if->__if.mac_type = fman_mac_10g;
 338         else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) {
 339                 __if->__if.is_memac = 1;
 340                 char_prop = of_get_property(mac_node, "phy-connection-type",
 341                                             NULL);
 342                 if (!char_prop) {
 343                         printf("memac: unknown MII type assuming 1G\n");
 344                         /* Right now forcing memac to 1g in case of error*/
 345                         __if->__if.mac_type = fman_mac_1g;
 346                 } else {
 347                         if (strstr(char_prop, "sgmii-2500"))
 348                                 __if->__if.mac_type = fman_mac_2_5g;
 349                         else if (strstr(char_prop, "sgmii"))
 350                                 __if->__if.mac_type = fman_mac_1g;
 351                         else if (strstr(char_prop, "rgmii")) {
 352                                 __if->__if.mac_type = fman_mac_1g;
 353                                 __if->__if.is_rgmii = 1;
 354                         } else if (strstr(char_prop, "xgmii"))
 355                                 __if->__if.mac_type = fman_mac_10g;
 356                 }
 357         } else {
 358                 FMAN_ERR(-EINVAL, "%s: unknown MAC type\n", mname);
 359                 goto err;
 360         }
 361
 362         /*
 363          * For MAC ports, we cannot rely on cell-index. In
 364          * T2080, two of the 10G ports on single FMAN have same
 365          * duplicate cell-indexes as the other two 10G ports on
 366          * same FMAN. Hence, we now rely upon addresses of the
 367          * ports from device tree to deduce the index.
 368          */
 369
 370         _errno = fman_get_mac_index(regs_addr_host, &__if->__if.mac_idx);
 371         if (_errno) {
 372                 FMAN_ERR(-EINVAL, "Invalid register address: %" PRIx64,
 373                          regs_addr_host);
 374                 goto err;
 375         }
 376
 377         /* Extract the MAC address for private and shared interfaces */
 378         mac_addr = of_get_property(mac_node, "local-mac-address",
 379                                    &lenp);
 380         if (!mac_addr) {
 381                 FMAN_ERR(-EINVAL, "%s: no local-mac-address\n",
 382                          mname);
 383                 goto err;
 384         }
 385         memcpy(&__if->__if.mac_addr, mac_addr, ETHER_ADDR_LEN);
 386
 387         /* Extract the Tx port (it's the second of the two port handles)
 388          * and get its channel ID
 389          */
 390         ports_phandle = of_get_property(mac_node, "fsl,port-handles",
 391                                         &lenp);
 392         if (!ports_phandle)
 393                 ports_phandle = of_get_property(mac_node, "fsl,fman-ports",
 394                                                 &lenp);
 395         if (!ports_phandle) {
 396                 FMAN_ERR(-EINVAL, "%s: no fsl,port-handles\n",
 397                          mname);
 398                 goto err;
 399         }
 400         assert(lenp == (2 * sizeof(phandle)));
 401         tx_node = of_find_node_by_phandle(ports_phandle[1]);
 402         if (!tx_node) {
 403                 FMAN_ERR(-ENXIO, "%s: bad fsl,port-handle[1]\n", mname);
 404                 goto err;
 405         }
 406         /* Extract the channel ID (from tx-port-handle) */
 407         tx_channel_id = of_get_property(tx_node, "fsl,qman-channel-id",
 408                                         &lenp);
 409         if (!tx_channel_id) {
 410                 FMAN_ERR(-EINVAL, "%s: no fsl-qman-channel-id\n",
 411                          tx_node->full_name);
 412                 goto err;
 413         }
 414
 415         rx_node = of_find_node_by_phandle(ports_phandle[0]);
 416         if (!rx_node) {
 417                 FMAN_ERR(-ENXIO, "%s: bad fsl,port-handle[0]\n", mname);
 418                 goto err;
 419         }
 420         regs_addr = of_get_address(rx_node, 0, &__if->regs_size, NULL);
 421         if (!regs_addr) {
 422                 FMAN_ERR(-EINVAL, "of_get_address(%s)\n", mname);
 423                 goto err;
 424         }
 425         phys_addr = of_translate_address(rx_node, regs_addr);
 426         if (!phys_addr) {
 427                 FMAN_ERR(-EINVAL, "of_translate_address(%s, %p)\n",
 428                          mname, regs_addr);
 429                 goto err;
 430         }
 431         __if->bmi_map = mmap(NULL, __if->regs_size,
 432                                  PROT_READ | PROT_WRITE, MAP_SHARED,
 433                                  fman_ccsr_map_fd, phys_addr);
 434         if (__if->bmi_map == MAP_FAILED) {
 435                 FMAN_ERR(-errno, "mmap(0x%"PRIx64")\n", phys_addr);
 436                 goto err;
 437         }
 438
 439         /* No channel ID for MAC-less */
 440         assert(lenp == sizeof(*tx_channel_id));
 441         na = of_n_addr_cells(mac_node);
 442         __if->__if.tx_channel_id = of_read_number(tx_channel_id, na);
 443
 444         /* Extract the Rx FQIDs. (Note, the device representation is silly,
 445          * there are "counts" that must always be 1.)
 446          */
 447         rx_phandle = of_get_property(dpa_node, rprop, &lenp);
 448         if (!rx_phandle) {
 449                 FMAN_ERR(-EINVAL, "%s: no fsl,qman-frame-queues-rx\n", dname);
 450                 goto err;
 451         }
 452
 453         assert(lenp >= (4 * sizeof(phandle)));
 454
 455         na = of_n_addr_cells(mac_node);
 456         /* Get rid of endianness (issues). Convert to host byte order */
 457         rx_phandle_host[0] = of_read_number(&rx_phandle[0], na);
 458         rx_phandle_host[1] = of_read_number(&rx_phandle[1], na);
 459         rx_phandle_host[2] = of_read_number(&rx_phandle[2], na);
 460         rx_phandle_host[3] = of_read_number(&rx_phandle[3], na);
 461
 462         assert((rx_phandle_host[1] == 1) && (rx_phandle_host[3] == 1));
 463         __if->__if.fqid_rx_err = rx_phandle_host[0];
 464         __if->__if.fqid_rx_def = rx_phandle_host[2];
 465
 466         /* Extract the Tx FQIDs */
 467         tx_phandle = of_get_property(dpa_node,
 468                                      "fsl,qman-frame-queues-tx", &lenp);
 469         if (!tx_phandle) {
 470                 FMAN_ERR(-EINVAL, "%s: no fsl,qman-frame-queues-tx\n", dname);
 471                 goto err;
 472         }
 473
 474         assert(lenp >= (4 * sizeof(phandle)));
 475         /*TODO: Fix for other cases also */
 476         na = of_n_addr_cells(mac_node);
 477         /* Get rid of endianness (issues). Convert to host byte order */
 478         tx_phandle_host[0] = of_read_number(&tx_phandle[0], na);
 479         tx_phandle_host[1] = of_read_number(&tx_phandle[1], na);
 480         tx_phandle_host[2] = of_read_number(&tx_phandle[2], na);
 481         tx_phandle_host[3] = of_read_number(&tx_phandle[3], na);
 482         assert((tx_phandle_host[1] == 1) && (tx_phandle_host[3] == 1));
 483         __if->__if.fqid_tx_err = tx_phandle_host[0];
 484         __if->__if.fqid_tx_confirm = tx_phandle_host[2];
 485
 486         /* Obtain the buffer pool nodes used by this interface */
 487         pools_phandle = of_get_property(dpa_node, "fsl,bman-buffer-pools",
 488                                         &lenp);
 489         if (!pools_phandle) {
 490                 FMAN_ERR(-EINVAL, "%s: no fsl,bman-buffer-pools\n", dname);
 491                 goto err;
 492         }
 493         /* For each pool, parse the corresponding node and add a pool object
 494          * to the interface's "bpool_list"
 495          */
 496         assert(lenp && !(lenp % sizeof(phandle)));
 497         while (lenp) {
 498                 size_t proplen;
 499                 const phandle *prop;
 500                 uint64_t bpid_host = 0;
 501                 uint64_t bpool_host[6] = {0};
 502                 const char *pname;
 503                 /* Allocate an object for the pool */
 504                 bpool = rte_malloc(NULL, sizeof(*bpool), RTE_CACHE_LINE_SIZE);
 505                 if (!bpool) {
 506                         FMAN_ERR(-ENOMEM, "malloc(%zu)\n", sizeof(*bpool));
 507                         goto err;
 508                 }
 509                 /* Find the pool node */
 510                 pool_node = of_find_node_by_phandle(*pools_phandle);
 511                 if (!pool_node) {
 512                         FMAN_ERR(-ENXIO, "%s: bad fsl,bman-buffer-pools\n",
 513                                  dname);
 514                         rte_free(bpool);
 515                         goto err;
 516                 }
 517                 pname = pool_node->full_name;
 518                 /* Extract the BPID property */
 519                 prop = of_get_property(pool_node, "fsl,bpid", &proplen);
 520                 if (!prop) {
 521                         FMAN_ERR(-EINVAL, "%s: no fsl,bpid\n", pname);
 522                         rte_free(bpool);
 523                         goto err;
 524                 }
 525                 assert(proplen == sizeof(*prop));
 526                 na = of_n_addr_cells(mac_node);
 527                 /* Get rid of endianness (issues).
 528                  * Convert to host byte-order
 529                  */
 530                 bpid_host = of_read_number(prop, na);
 531                 bpool->bpid = bpid_host;
 532                 /* Extract the cfg property (count/size/addr). "fsl,bpool-cfg"
 533                  * indicates for the Bman driver to seed the pool.
 534                  * "fsl,bpool-ethernet-cfg" is used by the network driver. The
 535                  * two are mutually exclusive, so check for either of them.
 536                  */
 537                 prop = of_get_property(pool_node, "fsl,bpool-cfg",
 538                                        &proplen);
 539                 if (!prop)
 540                         prop = of_get_property(pool_node,
 541                                                "fsl,bpool-ethernet-cfg",
 542                                                &proplen);
 543                 if (!prop) {
 544                         /* It's OK for there to be no bpool-cfg */
 545                         bpool->count = bpool->size = bpool->addr = 0;
 546                 } else {
 547                         assert(proplen == (6 * sizeof(*prop)));
 548                         na = of_n_addr_cells(mac_node);
 549                         /* Get rid of endianness (issues).
 550                          * Convert to host byte order
 551                          */
 552                         bpool_host[0] = of_read_number(&prop[0], na);
 553                         bpool_host[1] = of_read_number(&prop[1], na);
 554                         bpool_host[2] = of_read_number(&prop[2], na);
 555                         bpool_host[3] = of_read_number(&prop[3], na);
 556                         bpool_host[4] = of_read_number(&prop[4], na);
 557                         bpool_host[5] = of_read_number(&prop[5], na);
 558
 559                         bpool->count = ((uint64_t)bpool_host[0] << 32) |
 560                                         bpool_host[1];
 561                         bpool->size = ((uint64_t)bpool_host[2] << 32) |
 562                                         bpool_host[3];
 563                         bpool->addr = ((uint64_t)bpool_host[4] << 32) |
 564                                         bpool_host[5];
 565                 }
 566                 /* Parsing of the pool is complete, add it to the interface
 567                  * list.
 568                  */
 569                 list_add_tail(&bpool->node, &__if->__if.bpool_list);
 570                 lenp -= sizeof(phandle);
 571                 pools_phandle++;
 572         }
 573
 574         if (is_shared)
 575                 __if->__if.is_shared_mac = 1;
 576
 577         fman_if_vsp_init(__if);
 578
 579         /* Parsing of the network interface is complete, add it to the list */
 580         DPAA_BUS_LOG(DEBUG, "Found %s, Tx Channel = %x, FMAN = %x,"
 581                     "Port ID = %x",
 582                     dname, __if->__if.tx_channel_id, __if->__if.fman_idx,
 583                     __if->__if.mac_idx);
 584
 585         list_add_tail(&__if->__if.node, &__ifs);
 586         return 0;
 587 err:
 588         if_destructor(__if);
 589         return _errno;
 590 }
 591
 592 int
 593 fman_init(void)
 594 {
 595         const struct device_node *dpa_node, *parent_node;
 596         int _errno;
 597
 598         /* If multiple dependencies try to initialise the Fman driver, don't
 599          * panic.
 600          */
 601         if (fman_ccsr_map_fd != -1)
 602                 return 0;
 603
 604         fman_ccsr_map_fd = open(FMAN_DEVICE_PATH, O_RDWR);
 605         if (unlikely(fman_ccsr_map_fd < 0)) {
 606                 DPAA_BUS_LOG(ERR, "Unable to open (/dev/mem)");
 607                 return fman_ccsr_map_fd;
 608         }
 609
 610         parent_node = of_find_compatible_node(NULL, NULL, "fsl,dpaa");
 611         if (!parent_node) {
 612                 DPAA_BUS_LOG(ERR, "Unable to find fsl,dpaa node");
 613                 return -ENODEV;
 614         }
 615
 616         for_each_child_node(parent_node, dpa_node) {
 617                 _errno = fman_if_init(dpa_node);
 618                 if (_errno) {
 619                         FMAN_ERR(_errno, "if_init(%s)\n", dpa_node->full_name);
 620                         goto err;
 621                 }
 622         }
 623
 624         return 0;
 625 err:
 626         fman_finish();
 627         return _errno;
 628 }
 629
 630 void
 631 fman_finish(void)
 632 {
 633         struct __fman_if *__if, *tmpif;
 634
 635         assert(fman_ccsr_map_fd != -1);
 636
 637         list_for_each_entry_safe(__if, tmpif, &__ifs, __if.node) {
 638                 int _errno;
 639
 640                 /* disable Rx and Tx */
 641                 if ((__if->__if.mac_type == fman_mac_1g) &&
 642                     (!__if->__if.is_memac))
 643                         out_be32(__if->ccsr_map + 0x100,
 644                                  in_be32(__if->ccsr_map + 0x100) & ~(u32)0x5);
 645                 else
 646                         out_be32(__if->ccsr_map + 8,
 647                                  in_be32(__if->ccsr_map + 8) & ~(u32)3);
 648                 /* release the mapping */
 649                 _errno = munmap(__if->ccsr_map, __if->regs_size);
 650                 if (unlikely(_errno < 0))
 651                         fprintf(stderr, "%s:%d:%s(): munmap() = %d (%s)\n",
 652                                 __FILE__, __LINE__, __func__,
 653                                 -errno, strerror(errno));
 654                 printf("Tearing down %s\n", __if->node_path);
 655                 list_del(&__if->__if.node);
 656                 rte_free(__if);
 657         }
 658
 659         close(fman_ccsr_map_fd);
 660         fman_ccsr_map_fd = -1;
 661 }