linux/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
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   1/*
   2 * Copyright (C) 2003 - 2009 NetXen, Inc.
   3 * Copyright (C) 2009 - QLogic Corporation.
   4 * All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * as published by the Free Software Foundation; either version 2
   9 * of the License, or (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * The full GNU General Public License is included in this distribution
  20 * in the file called "COPYING".
  21 *
  22 */
  23
  24#include <linux/netdevice.h>
  25#include <linux/delay.h>
  26#include <linux/slab.h>
  27#include <linux/if_vlan.h>
  28#include <net/checksum.h>
  29#include "netxen_nic.h"
  30#include "netxen_nic_hw.h"
  31
  32struct crb_addr_pair {
  33        u32 addr;
  34        u32 data;
  35};
  36
  37#define NETXEN_MAX_CRB_XFORM 60
  38static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  39#define NETXEN_ADDR_ERROR (0xffffffff)
  40
  41#define crb_addr_transform(name) \
  42        crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  43        NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  44
  45#define NETXEN_NIC_XDMA_RESET 0x8000ff
  46
  47static void
  48netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  49                struct nx_host_rds_ring *rds_ring);
  50static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  51
  52static void crb_addr_transform_setup(void)
  53{
  54        crb_addr_transform(XDMA);
  55        crb_addr_transform(TIMR);
  56        crb_addr_transform(SRE);
  57        crb_addr_transform(SQN3);
  58        crb_addr_transform(SQN2);
  59        crb_addr_transform(SQN1);
  60        crb_addr_transform(SQN0);
  61        crb_addr_transform(SQS3);
  62        crb_addr_transform(SQS2);
  63        crb_addr_transform(SQS1);
  64        crb_addr_transform(SQS0);
  65        crb_addr_transform(RPMX7);
  66        crb_addr_transform(RPMX6);
  67        crb_addr_transform(RPMX5);
  68        crb_addr_transform(RPMX4);
  69        crb_addr_transform(RPMX3);
  70        crb_addr_transform(RPMX2);
  71        crb_addr_transform(RPMX1);
  72        crb_addr_transform(RPMX0);
  73        crb_addr_transform(ROMUSB);
  74        crb_addr_transform(SN);
  75        crb_addr_transform(QMN);
  76        crb_addr_transform(QMS);
  77        crb_addr_transform(PGNI);
  78        crb_addr_transform(PGND);
  79        crb_addr_transform(PGN3);
  80        crb_addr_transform(PGN2);
  81        crb_addr_transform(PGN1);
  82        crb_addr_transform(PGN0);
  83        crb_addr_transform(PGSI);
  84        crb_addr_transform(PGSD);
  85        crb_addr_transform(PGS3);
  86        crb_addr_transform(PGS2);
  87        crb_addr_transform(PGS1);
  88        crb_addr_transform(PGS0);
  89        crb_addr_transform(PS);
  90        crb_addr_transform(PH);
  91        crb_addr_transform(NIU);
  92        crb_addr_transform(I2Q);
  93        crb_addr_transform(EG);
  94        crb_addr_transform(MN);
  95        crb_addr_transform(MS);
  96        crb_addr_transform(CAS2);
  97        crb_addr_transform(CAS1);
  98        crb_addr_transform(CAS0);
  99        crb_addr_transform(CAM);
 100        crb_addr_transform(C2C1);
 101        crb_addr_transform(C2C0);
 102        crb_addr_transform(SMB);
 103        crb_addr_transform(OCM0);
 104        crb_addr_transform(I2C0);
 105}
 106
 107void netxen_release_rx_buffers(struct netxen_adapter *adapter)
 108{
 109        struct netxen_recv_context *recv_ctx;
 110        struct nx_host_rds_ring *rds_ring;
 111        struct netxen_rx_buffer *rx_buf;
 112        int i, ring;
 113
 114        recv_ctx = &adapter->recv_ctx;
 115        for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 116                rds_ring = &recv_ctx->rds_rings[ring];
 117                for (i = 0; i < rds_ring->num_desc; ++i) {
 118                        rx_buf = &(rds_ring->rx_buf_arr[i]);
 119                        if (rx_buf->state == NETXEN_BUFFER_FREE)
 120                                continue;
 121                        pci_unmap_single(adapter->pdev,
 122                                        rx_buf->dma,
 123                                        rds_ring->dma_size,
 124                                        PCI_DMA_FROMDEVICE);
 125                        if (rx_buf->skb != NULL)
 126                                dev_kfree_skb_any(rx_buf->skb);
 127                }
 128        }
 129}
 130
 131void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 132{
 133        struct netxen_cmd_buffer *cmd_buf;
 134        struct netxen_skb_frag *buffrag;
 135        int i, j;
 136        struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 137
 138        spin_lock_bh(&adapter->tx_clean_lock);
 139        cmd_buf = tx_ring->cmd_buf_arr;
 140        for (i = 0; i < tx_ring->num_desc; i++) {
 141                buffrag = cmd_buf->frag_array;
 142                if (buffrag->dma) {
 143                        pci_unmap_single(adapter->pdev, buffrag->dma,
 144                                         buffrag->length, PCI_DMA_TODEVICE);
 145                        buffrag->dma = 0ULL;
 146                }
 147                for (j = 1; j < cmd_buf->frag_count; j++) {
 148                        buffrag++;
 149                        if (buffrag->dma) {
 150                                pci_unmap_page(adapter->pdev, buffrag->dma,
 151                                               buffrag->length,
 152                                               PCI_DMA_TODEVICE);
 153                                buffrag->dma = 0ULL;
 154                        }
 155                }
 156                if (cmd_buf->skb) {
 157                        dev_kfree_skb_any(cmd_buf->skb);
 158                        cmd_buf->skb = NULL;
 159                }
 160                cmd_buf++;
 161        }
 162        spin_unlock_bh(&adapter->tx_clean_lock);
 163}
 164
 165void netxen_free_sw_resources(struct netxen_adapter *adapter)
 166{
 167        struct netxen_recv_context *recv_ctx;
 168        struct nx_host_rds_ring *rds_ring;
 169        struct nx_host_tx_ring *tx_ring;
 170        int ring;
 171
 172        recv_ctx = &adapter->recv_ctx;
 173
 174        if (recv_ctx->rds_rings == NULL)
 175                goto skip_rds;
 176
 177        for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 178                rds_ring = &recv_ctx->rds_rings[ring];
 179                vfree(rds_ring->rx_buf_arr);
 180                rds_ring->rx_buf_arr = NULL;
 181        }
 182        kfree(recv_ctx->rds_rings);
 183
 184skip_rds:
 185        if (adapter->tx_ring == NULL)
 186                return;
 187
 188        tx_ring = adapter->tx_ring;
 189        vfree(tx_ring->cmd_buf_arr);
 190        kfree(tx_ring);
 191        adapter->tx_ring = NULL;
 192}
 193
 194int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 195{
 196        struct netxen_recv_context *recv_ctx;
 197        struct nx_host_rds_ring *rds_ring;
 198        struct nx_host_sds_ring *sds_ring;
 199        struct nx_host_tx_ring *tx_ring;
 200        struct netxen_rx_buffer *rx_buf;
 201        int ring, i;
 202
 203        struct netxen_cmd_buffer *cmd_buf_arr;
 204        struct net_device *netdev = adapter->netdev;
 205
 206        tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
 207        if (tx_ring == NULL)
 208                return -ENOMEM;
 209
 210        adapter->tx_ring = tx_ring;
 211
 212        tx_ring->num_desc = adapter->num_txd;
 213        tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 214
 215        cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 216        if (cmd_buf_arr == NULL)
 217                goto err_out;
 218
 219        tx_ring->cmd_buf_arr = cmd_buf_arr;
 220
 221        recv_ctx = &adapter->recv_ctx;
 222
 223        rds_ring = kcalloc(adapter->max_rds_rings,
 224                           sizeof(struct nx_host_rds_ring), GFP_KERNEL);
 225        if (rds_ring == NULL)
 226                goto err_out;
 227
 228        recv_ctx->rds_rings = rds_ring;
 229
 230        for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 231                rds_ring = &recv_ctx->rds_rings[ring];
 232                switch (ring) {
 233                case RCV_RING_NORMAL:
 234                        rds_ring->num_desc = adapter->num_rxd;
 235                        if (adapter->ahw.cut_through) {
 236                                rds_ring->dma_size =
 237                                        NX_CT_DEFAULT_RX_BUF_LEN;
 238                                rds_ring->skb_size =
 239                                        NX_CT_DEFAULT_RX_BUF_LEN;
 240                        } else {
 241                                if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 242                                        rds_ring->dma_size =
 243                                                NX_P3_RX_BUF_MAX_LEN;
 244                                else
 245                                        rds_ring->dma_size =
 246                                                NX_P2_RX_BUF_MAX_LEN;
 247                                rds_ring->skb_size =
 248                                        rds_ring->dma_size + NET_IP_ALIGN;
 249                        }
 250                        break;
 251
 252                case RCV_RING_JUMBO:
 253                        rds_ring->num_desc = adapter->num_jumbo_rxd;
 254                        if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 255                                rds_ring->dma_size =
 256                                        NX_P3_RX_JUMBO_BUF_MAX_LEN;
 257                        else
 258                                rds_ring->dma_size =
 259                                        NX_P2_RX_JUMBO_BUF_MAX_LEN;
 260
 261                        if (adapter->capabilities & NX_CAP0_HW_LRO)
 262                                rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 263
 264                        rds_ring->skb_size =
 265                                rds_ring->dma_size + NET_IP_ALIGN;
 266                        break;
 267
 268                case RCV_RING_LRO:
 269                        rds_ring->num_desc = adapter->num_lro_rxd;
 270                        rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 271                        rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 272                        break;
 273
 274                }
 275                rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 276                if (rds_ring->rx_buf_arr == NULL)
 277                        /* free whatever was already allocated */
 278                        goto err_out;
 279
 280                INIT_LIST_HEAD(&rds_ring->free_list);
 281                /*
 282                 * Now go through all of them, set reference handles
 283                 * and put them in the queues.
 284                 */
 285                rx_buf = rds_ring->rx_buf_arr;
 286                for (i = 0; i < rds_ring->num_desc; i++) {
 287                        list_add_tail(&rx_buf->list,
 288                                        &rds_ring->free_list);
 289                        rx_buf->ref_handle = i;
 290                        rx_buf->state = NETXEN_BUFFER_FREE;
 291                        rx_buf++;
 292                }
 293                spin_lock_init(&rds_ring->lock);
 294        }
 295
 296        for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 297                sds_ring = &recv_ctx->sds_rings[ring];
 298                sds_ring->irq = adapter->msix_entries[ring].vector;
 299                sds_ring->adapter = adapter;
 300                sds_ring->num_desc = adapter->num_rxd;
 301
 302                for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 303                        INIT_LIST_HEAD(&sds_ring->free_list[i]);
 304        }
 305
 306        return 0;
 307
 308err_out:
 309        netxen_free_sw_resources(adapter);
 310        return -ENOMEM;
 311}
 312
 313/*
 314 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 315 * address to external PCI CRB address.
 316 */
 317static u32 netxen_decode_crb_addr(u32 addr)
 318{
 319        int i;
 320        u32 base_addr, offset, pci_base;
 321
 322        crb_addr_transform_setup();
 323
 324        pci_base = NETXEN_ADDR_ERROR;
 325        base_addr = addr & 0xfff00000;
 326        offset = addr & 0x000fffff;
 327
 328        for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 329                if (crb_addr_xform[i] == base_addr) {
 330                        pci_base = i << 20;
 331                        break;
 332                }
 333        }
 334        if (pci_base == NETXEN_ADDR_ERROR)
 335                return pci_base;
 336        else
 337                return pci_base + offset;
 338}
 339
 340#define NETXEN_MAX_ROM_WAIT_USEC        100
 341
 342static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 343{
 344        long timeout = 0;
 345        long done = 0;
 346
 347        cond_resched();
 348
 349        while (done == 0) {
 350                done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 351                done &= 2;
 352                if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 353                        dev_err(&adapter->pdev->dev,
 354                                "Timeout reached  waiting for rom done");
 355                        return -EIO;
 356                }
 357                udelay(1);
 358        }
 359        return 0;
 360}
 361
 362static int do_rom_fast_read(struct netxen_adapter *adapter,
 363                            int addr, int *valp)
 364{
 365        NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 366        NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 367        NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 368        NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 369        if (netxen_wait_rom_done(adapter)) {
 370                printk("Error waiting for rom done\n");
 371                return -EIO;
 372        }
 373        /* reset abyte_cnt and dummy_byte_cnt */
 374        NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 375        udelay(10);
 376        NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 377
 378        *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 379        return 0;
 380}
 381
 382static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 383                                  u8 *bytes, size_t size)
 384{
 385        int addridx;
 386        int ret = 0;
 387
 388        for (addridx = addr; addridx < (addr + size); addridx += 4) {
 389                int v;
 390                ret = do_rom_fast_read(adapter, addridx, &v);
 391                if (ret != 0)
 392                        break;
 393                *(__le32 *)bytes = cpu_to_le32(v);
 394                bytes += 4;
 395        }
 396
 397        return ret;
 398}
 399
 400int
 401netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 402                                u8 *bytes, size_t size)
 403{
 404        int ret;
 405
 406        ret = netxen_rom_lock(adapter);
 407        if (ret < 0)
 408                return ret;
 409
 410        ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 411
 412        netxen_rom_unlock(adapter);
 413        return ret;
 414}
 415
 416int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 417{
 418        int ret;
 419
 420        if (netxen_rom_lock(adapter) != 0)
 421                return -EIO;
 422
 423        ret = do_rom_fast_read(adapter, addr, valp);
 424        netxen_rom_unlock(adapter);
 425        return ret;
 426}
 427
 428#define NETXEN_BOARDTYPE                0x4008
 429#define NETXEN_BOARDNUM                 0x400c
 430#define NETXEN_CHIPNUM                  0x4010
 431
 432int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 433{
 434        int addr, val;
 435        int i, n, init_delay = 0;
 436        struct crb_addr_pair *buf;
 437        unsigned offset;
 438        u32 off;
 439
 440        /* resetall */
 441        netxen_rom_lock(adapter);
 442        NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 443        netxen_rom_unlock(adapter);
 444
 445        if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 446                if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 447                        (n != 0xcafecafe) ||
 448                        netxen_rom_fast_read(adapter, 4, &n) != 0) {
 449                        printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 450                                        "n: %08x\n", netxen_nic_driver_name, n);
 451                        return -EIO;
 452                }
 453                offset = n & 0xffffU;
 454                n = (n >> 16) & 0xffffU;
 455        } else {
 456                if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 457                        !(n & 0x80000000)) {
 458                        printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 459                                        "n: %08x\n", netxen_nic_driver_name, n);
 460                        return -EIO;
 461                }
 462                offset = 1;
 463                n &= ~0x80000000;
 464        }
 465
 466        if (n >= 1024) {
 467                printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 468                       " initialized.\n", __func__, n);
 469                return -EIO;
 470        }
 471
 472        buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 473        if (buf == NULL)
 474                return -ENOMEM;
 475
 476        for (i = 0; i < n; i++) {
 477                if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 478                netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 479                        kfree(buf);
 480                        return -EIO;
 481                }
 482
 483                buf[i].addr = addr;
 484                buf[i].data = val;
 485
 486        }
 487
 488        for (i = 0; i < n; i++) {
 489
 490                off = netxen_decode_crb_addr(buf[i].addr);
 491                if (off == NETXEN_ADDR_ERROR) {
 492                        printk(KERN_ERR"CRB init value out of range %x\n",
 493                                        buf[i].addr);
 494                        continue;
 495                }
 496                off += NETXEN_PCI_CRBSPACE;
 497
 498                if (off & 1)
 499                        continue;
 500
 501                /* skipping cold reboot MAGIC */
 502                if (off == NETXEN_CAM_RAM(0x1fc))
 503                        continue;
 504
 505                if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 506                        if (off == (NETXEN_CRB_I2C0 + 0x1c))
 507                                continue;
 508                        /* do not reset PCI */
 509                        if (off == (ROMUSB_GLB + 0xbc))
 510                                continue;
 511                        if (off == (ROMUSB_GLB + 0xa8))
 512                                continue;
 513                        if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 514                                continue;
 515                        if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 516                                continue;
 517                        if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 518                                continue;
 519                        if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 520                                continue;
 521                        if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 522                                !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 523                                buf[i].data = 0x1020;
 524                        /* skip the function enable register */
 525                        if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 526                                continue;
 527                        if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 528                                continue;
 529                        if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 530                                continue;
 531                }
 532
 533                init_delay = 1;
 534                /* After writing this register, HW needs time for CRB */
 535                /* to quiet down (else crb_window returns 0xffffffff) */
 536                if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 537                        init_delay = 1000;
 538                        if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 539                                /* hold xdma in reset also */
 540                                buf[i].data = NETXEN_NIC_XDMA_RESET;
 541                                buf[i].data = 0x8000ff;
 542                        }
 543                }
 544
 545                NXWR32(adapter, off, buf[i].data);
 546
 547                msleep(init_delay);
 548        }
 549        kfree(buf);
 550
 551        /* disable_peg_cache_all */
 552
 553        /* unreset_net_cache */
 554        if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 555                val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 556                NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 557        }
 558
 559        /* p2dn replyCount */
 560        NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 561        /* disable_peg_cache 0 */
 562        NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 563        /* disable_peg_cache 1 */
 564        NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 565
 566        /* peg_clr_all */
 567
 568        /* peg_clr 0 */
 569        NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 570        NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 571        /* peg_clr 1 */
 572        NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 573        NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 574        /* peg_clr 2 */
 575        NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 576        NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 577        /* peg_clr 3 */
 578        NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 579        NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 580        return 0;
 581}
 582
 583static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 584{
 585        uint32_t i;
 586        struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 587        __le32 entries = cpu_to_le32(directory->num_entries);
 588
 589        for (i = 0; i < entries; i++) {
 590
 591                __le32 offs = cpu_to_le32(directory->findex) +
 592                                (i * cpu_to_le32(directory->entry_size));
 593                __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 594
 595                if (tab_type == section)
 596                        return (struct uni_table_desc *) &unirom[offs];
 597        }
 598
 599        return NULL;
 600}
 601
 602#define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 603
 604static int
 605netxen_nic_validate_header(struct netxen_adapter *adapter)
 606 {
 607        const u8 *unirom = adapter->fw->data;
 608        struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 609        u32 fw_file_size = adapter->fw->size;
 610        u32 tab_size;
 611        __le32 entries;
 612        __le32 entry_size;
 613
 614        if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 615                return -EINVAL;
 616
 617        entries = cpu_to_le32(directory->num_entries);
 618        entry_size = cpu_to_le32(directory->entry_size);
 619        tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 620
 621        if (fw_file_size < tab_size)
 622                return -EINVAL;
 623
 624        return 0;
 625}
 626
 627static int
 628netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 629{
 630        struct uni_table_desc *tab_desc;
 631        struct uni_data_desc *descr;
 632        const u8 *unirom = adapter->fw->data;
 633        __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 634                                NX_UNI_BOOTLD_IDX_OFF));
 635        u32 offs;
 636        u32 tab_size;
 637        u32 data_size;
 638
 639        tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 640
 641        if (!tab_desc)
 642                return -EINVAL;
 643
 644        tab_size = cpu_to_le32(tab_desc->findex) +
 645                        (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 646
 647        if (adapter->fw->size < tab_size)
 648                return -EINVAL;
 649
 650        offs = cpu_to_le32(tab_desc->findex) +
 651                (cpu_to_le32(tab_desc->entry_size) * (idx));
 652        descr = (struct uni_data_desc *)&unirom[offs];
 653
 654        data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 655
 656        if (adapter->fw->size < data_size)
 657                return -EINVAL;
 658
 659        return 0;
 660}
 661
 662static int
 663netxen_nic_validate_fw(struct netxen_adapter *adapter)
 664{
 665        struct uni_table_desc *tab_desc;
 666        struct uni_data_desc *descr;
 667        const u8 *unirom = adapter->fw->data;
 668        __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 669                                NX_UNI_FIRMWARE_IDX_OFF));
 670        u32 offs;
 671        u32 tab_size;
 672        u32 data_size;
 673
 674        tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 675
 676        if (!tab_desc)
 677                return -EINVAL;
 678
 679        tab_size = cpu_to_le32(tab_desc->findex) +
 680                        (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 681
 682        if (adapter->fw->size < tab_size)
 683                return -EINVAL;
 684
 685        offs = cpu_to_le32(tab_desc->findex) +
 686                (cpu_to_le32(tab_desc->entry_size) * (idx));
 687        descr = (struct uni_data_desc *)&unirom[offs];
 688        data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 689
 690        if (adapter->fw->size < data_size)
 691                return -EINVAL;
 692
 693        return 0;
 694}
 695
 696
 697static int
 698netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 699{
 700        struct uni_table_desc *ptab_descr;
 701        const u8 *unirom = adapter->fw->data;
 702        int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 703                        1 : netxen_p3_has_mn(adapter);
 704        __le32 entries;
 705        __le32 entry_size;
 706        u32 tab_size;
 707        u32 i;
 708
 709        ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 710        if (ptab_descr == NULL)
 711                return -EINVAL;
 712
 713        entries = cpu_to_le32(ptab_descr->num_entries);
 714        entry_size = cpu_to_le32(ptab_descr->entry_size);
 715        tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 716
 717        if (adapter->fw->size < tab_size)
 718                return -EINVAL;
 719
 720nomn:
 721        for (i = 0; i < entries; i++) {
 722
 723                __le32 flags, file_chiprev, offs;
 724                u8 chiprev = adapter->ahw.revision_id;
 725                uint32_t flagbit;
 726
 727                offs = cpu_to_le32(ptab_descr->findex) +
 728                                (i * cpu_to_le32(ptab_descr->entry_size));
 729                flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 730                file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 731                                                        NX_UNI_CHIP_REV_OFF));
 732
 733                flagbit = mn_present ? 1 : 2;
 734
 735                if ((chiprev == file_chiprev) &&
 736                                        ((1ULL << flagbit) & flags)) {
 737                        adapter->file_prd_off = offs;
 738                        return 0;
 739                }
 740        }
 741
 742        if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 743                mn_present = 0;
 744                goto nomn;
 745        }
 746
 747        return -EINVAL;
 748}
 749
 750static int
 751netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 752{
 753        if (netxen_nic_validate_header(adapter)) {
 754                dev_err(&adapter->pdev->dev,
 755                                "unified image: header validation failed\n");
 756                return -EINVAL;
 757        }
 758
 759        if (netxen_nic_validate_product_offs(adapter)) {
 760                dev_err(&adapter->pdev->dev,
 761                                "unified image: product validation failed\n");
 762                return -EINVAL;
 763        }
 764
 765        if (netxen_nic_validate_bootld(adapter)) {
 766                dev_err(&adapter->pdev->dev,
 767                                "unified image: bootld validation failed\n");
 768                return -EINVAL;
 769        }
 770
 771        if (netxen_nic_validate_fw(adapter)) {
 772                dev_err(&adapter->pdev->dev,
 773                                "unified image: firmware validation failed\n");
 774                return -EINVAL;
 775        }
 776
 777        return 0;
 778}
 779
 780static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 781                        u32 section, u32 idx_offset)
 782{
 783        const u8 *unirom = adapter->fw->data;
 784        int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 785                                                                idx_offset));
 786        struct uni_table_desc *tab_desc;
 787        __le32 offs;
 788
 789        tab_desc = nx_get_table_desc(unirom, section);
 790
 791        if (tab_desc == NULL)
 792                return NULL;
 793
 794        offs = cpu_to_le32(tab_desc->findex) +
 795                        (cpu_to_le32(tab_desc->entry_size) * idx);
 796
 797        return (struct uni_data_desc *)&unirom[offs];
 798}
 799
 800static u8 *
 801nx_get_bootld_offs(struct netxen_adapter *adapter)
 802{
 803        u32 offs = NETXEN_BOOTLD_START;
 804
 805        if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 806                offs = cpu_to_le32((nx_get_data_desc(adapter,
 807                                        NX_UNI_DIR_SECT_BOOTLD,
 808                                        NX_UNI_BOOTLD_IDX_OFF))->findex);
 809
 810        return (u8 *)&adapter->fw->data[offs];
 811}
 812
 813static u8 *
 814nx_get_fw_offs(struct netxen_adapter *adapter)
 815{
 816        u32 offs = NETXEN_IMAGE_START;
 817
 818        if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 819                offs = cpu_to_le32((nx_get_data_desc(adapter,
 820                                        NX_UNI_DIR_SECT_FW,
 821                                        NX_UNI_FIRMWARE_IDX_OFF))->findex);
 822
 823        return (u8 *)&adapter->fw->data[offs];
 824}
 825
 826static __le32
 827nx_get_fw_size(struct netxen_adapter *adapter)
 828{
 829        if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 830                return cpu_to_le32((nx_get_data_desc(adapter,
 831                                        NX_UNI_DIR_SECT_FW,
 832                                        NX_UNI_FIRMWARE_IDX_OFF))->size);
 833        else
 834                return cpu_to_le32(
 835                                *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 836}
 837
 838static __le32
 839nx_get_fw_version(struct netxen_adapter *adapter)
 840{
 841        struct uni_data_desc *fw_data_desc;
 842        const struct firmware *fw = adapter->fw;
 843        __le32 major, minor, sub;
 844        const u8 *ver_str;
 845        int i, ret = 0;
 846
 847        if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 848
 849                fw_data_desc = nx_get_data_desc(adapter,
 850                                NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 851                ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 852                                cpu_to_le32(fw_data_desc->size) - 17;
 853
 854                for (i = 0; i < 12; i++) {
 855                        if (!strncmp(&ver_str[i], "REV=", 4)) {
 856                                ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 857                                                        &major, &minor, &sub);
 858                                break;
 859                        }
 860                }
 861
 862                if (ret != 3)
 863                        return 0;
 864
 865                return major + (minor << 8) + (sub << 16);
 866
 867        } else
 868                return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 869}
 870
 871static __le32
 872nx_get_bios_version(struct netxen_adapter *adapter)
 873{
 874        const struct firmware *fw = adapter->fw;
 875        __le32 bios_ver, prd_off = adapter->file_prd_off;
 876
 877        if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 878                bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 879                                                + NX_UNI_BIOS_VERSION_OFF));
 880                return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 881                                                        (bios_ver >> 24);
 882        } else
 883                return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 884
 885}
 886
 887int
 888netxen_need_fw_reset(struct netxen_adapter *adapter)
 889{
 890        u32 count, old_count;
 891        u32 val, version, major, minor, build;
 892        int i, timeout;
 893        u8 fw_type;
 894
 895        /* NX2031 firmware doesn't support heartbit */
 896        if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 897                return 1;
 898
 899        if (adapter->need_fw_reset)
 900                return 1;
 901
 902        /* last attempt had failed */
 903        if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 904                return 1;
 905
 906        old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 907
 908        for (i = 0; i < 10; i++) {
 909
 910                timeout = msleep_interruptible(200);
 911                if (timeout) {
 912                        NXWR32(adapter, CRB_CMDPEG_STATE,
 913                                        PHAN_INITIALIZE_FAILED);
 914                        return -EINTR;
 915                }
 916
 917                count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 918                if (count != old_count)
 919                        break;
 920        }
 921
 922        /* firmware is dead */
 923        if (count == old_count)
 924                return 1;
 925
 926        /* check if we have got newer or different file firmware */
 927        if (adapter->fw) {
 928
 929                val = nx_get_fw_version(adapter);
 930
 931                version = NETXEN_DECODE_VERSION(val);
 932
 933                major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 934                minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 935                build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 936
 937                if (version > NETXEN_VERSION_CODE(major, minor, build))
 938                        return 1;
 939
 940                if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 941                        adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 942
 943                        val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 944                        fw_type = (val & 0x4) ?
 945                                NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 946
 947                        if (adapter->fw_type != fw_type)
 948                                return 1;
 949                }
 950        }
 951
 952        return 0;
 953}
 954
 955#define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 956
 957int
 958netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 959{
 960        u32 flash_fw_ver, min_fw_ver;
 961
 962        if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 963                return 0;
 964
 965        if (netxen_rom_fast_read(adapter,
 966                        NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 967                dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 968                        "version\n");
 969                return -EIO;
 970        }
 971
 972        flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 973        min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 974        if (flash_fw_ver >= min_fw_ver)
 975                return 0;
 976
 977        dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 978                "[4.0.505]. Please update firmware on flash\n",
 979                _major(flash_fw_ver), _minor(flash_fw_ver),
 980                _build(flash_fw_ver));
 981        return -EINVAL;
 982}
 983
 984static char *fw_name[] = {
 985        NX_P2_MN_ROMIMAGE_NAME,
 986        NX_P3_CT_ROMIMAGE_NAME,
 987        NX_P3_MN_ROMIMAGE_NAME,
 988        NX_UNIFIED_ROMIMAGE_NAME,
 989        NX_FLASH_ROMIMAGE_NAME,
 990};
 991
 992int
 993netxen_load_firmware(struct netxen_adapter *adapter)
 994{
 995        u64 *ptr64;
 996        u32 i, flashaddr, size;
 997        const struct firmware *fw = adapter->fw;
 998        struct pci_dev *pdev = adapter->pdev;
 999
1000        dev_info(&pdev->dev, "loading firmware from %s\n",
1001                        fw_name[adapter->fw_type]);
1002
1003        if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1004                NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1005
1006        if (fw) {
1007                __le64 data;
1008
1009                size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1010
1011                ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1012                flashaddr = NETXEN_BOOTLD_START;
1013
1014                for (i = 0; i < size; i++) {
1015                        data = cpu_to_le64(ptr64[i]);
1016
1017                        if (adapter->pci_mem_write(adapter, flashaddr, data))
1018                                return -EIO;
1019
1020                        flashaddr += 8;
1021                }
1022
1023                size = (__force u32)nx_get_fw_size(adapter) / 8;
1024
1025                ptr64 = (u64 *)nx_get_fw_offs(adapter);
1026                flashaddr = NETXEN_IMAGE_START;
1027
1028                for (i = 0; i < size; i++) {
1029                        data = cpu_to_le64(ptr64[i]);
1030
1031                        if (adapter->pci_mem_write(adapter,
1032                                                flashaddr, data))
1033                                return -EIO;
1034
1035                        flashaddr += 8;
1036                }
1037
1038                size = (__force u32)nx_get_fw_size(adapter) % 8;
1039                if (size) {
1040                        data = cpu_to_le64(ptr64[i]);
1041
1042                        if (adapter->pci_mem_write(adapter,
1043                                                flashaddr, data))
1044                                return -EIO;
1045                }
1046
1047        } else {
1048                u64 data;
1049                u32 hi, lo;
1050
1051                size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1052                flashaddr = NETXEN_BOOTLD_START;
1053
1054                for (i = 0; i < size; i++) {
1055                        if (netxen_rom_fast_read(adapter,
1056                                        flashaddr, (int *)&lo) != 0)
1057                                return -EIO;
1058                        if (netxen_rom_fast_read(adapter,
1059                                        flashaddr + 4, (int *)&hi) != 0)
1060                                return -EIO;
1061
1062                        /* hi, lo are already in host endian byteorder */
1063                        data = (((u64)hi << 32) | lo);
1064
1065                        if (adapter->pci_mem_write(adapter,
1066                                                flashaddr, data))
1067                                return -EIO;
1068
1069                        flashaddr += 8;
1070                }
1071        }
1072        msleep(1);
1073
1074        if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1075                NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1076                NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1077        } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1078                NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1079        else {
1080                NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1081                NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1082        }
1083
1084        return 0;
1085}
1086
1087static int
1088netxen_validate_firmware(struct netxen_adapter *adapter)
1089{
1090        __le32 val;
1091        __le32 flash_fw_ver;
1092        u32 file_fw_ver, min_ver, bios;
1093        struct pci_dev *pdev = adapter->pdev;
1094        const struct firmware *fw = adapter->fw;
1095        u8 fw_type = adapter->fw_type;
1096        u32 crbinit_fix_fw;
1097
1098        if (fw_type == NX_UNIFIED_ROMIMAGE) {
1099                if (netxen_nic_validate_unified_romimage(adapter))
1100                        return -EINVAL;
1101        } else {
1102                val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1103                if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1104                        return -EINVAL;
1105
1106                if (fw->size < NX_FW_MIN_SIZE)
1107                        return -EINVAL;
1108        }
1109
1110        val = nx_get_fw_version(adapter);
1111
1112        if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1113                min_ver = NETXEN_MIN_P3_FW_SUPP;
1114        else
1115                min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1116
1117        file_fw_ver = NETXEN_DECODE_VERSION(val);
1118
1119        if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1120            (file_fw_ver < min_ver)) {
1121                dev_err(&pdev->dev,
1122                                "%s: firmware version %d.%d.%d unsupported\n",
1123                fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1124                 _build(file_fw_ver));
1125                return -EINVAL;
1126        }
1127        val = nx_get_bios_version(adapter);
1128        netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1129        if ((__force u32)val != bios) {
1130                dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1131                                fw_name[fw_type]);
1132                return -EINVAL;
1133        }
1134
1135        if (netxen_rom_fast_read(adapter,
1136                        NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1137                dev_err(&pdev->dev, "Unable to read flash fw version\n");
1138                return -EIO;
1139        }
1140        flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1141
1142        /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1143        crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1144        if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1145            NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1146                dev_err(&pdev->dev, "Incompatibility detected between driver "
1147                        "and firmware version on flash. This configuration "
1148                        "is not recommended. Please update the firmware on "
1149                        "flash immediately\n");
1150                return -EINVAL;
1151        }
1152
1153        /* check if flashed firmware is newer only for no-mn and P2 case*/
1154        if (!netxen_p3_has_mn(adapter) ||
1155            NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1156                if (flash_fw_ver > file_fw_ver) {
1157                        dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1158                                fw_name[fw_type]);
1159                        return -EINVAL;
1160                }
1161        }
1162
1163        NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1164        return 0;
1165}
1166
1167static void
1168nx_get_next_fwtype(struct netxen_adapter *adapter)
1169{
1170        u8 fw_type;
1171
1172        switch (adapter->fw_type) {
1173        case NX_UNKNOWN_ROMIMAGE:
1174                fw_type = NX_UNIFIED_ROMIMAGE;
1175                break;
1176
1177        case NX_UNIFIED_ROMIMAGE:
1178                if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1179                        fw_type = NX_FLASH_ROMIMAGE;
1180                else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1181                        fw_type = NX_P2_MN_ROMIMAGE;
1182                else if (netxen_p3_has_mn(adapter))
1183                        fw_type = NX_P3_MN_ROMIMAGE;
1184                else
1185                        fw_type = NX_P3_CT_ROMIMAGE;
1186                break;
1187
1188        case NX_P3_MN_ROMIMAGE:
1189                fw_type = NX_P3_CT_ROMIMAGE;
1190                break;
1191
1192        case NX_P2_MN_ROMIMAGE:
1193        case NX_P3_CT_ROMIMAGE:
1194        default:
1195                fw_type = NX_FLASH_ROMIMAGE;
1196                break;
1197        }
1198
1199        adapter->fw_type = fw_type;
1200}
1201
1202static int
1203netxen_p3_has_mn(struct netxen_adapter *adapter)
1204{
1205        u32 capability, flashed_ver;
1206        capability = 0;
1207
1208        /* NX2031 always had MN */
1209        if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1210                return 1;
1211
1212        netxen_rom_fast_read(adapter,
1213                        NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1214        flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1215
1216        if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1217
1218                capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1219                if (capability & NX_PEG_TUNE_MN_PRESENT)
1220                        return 1;
1221        }
1222        return 0;
1223}
1224
1225void netxen_request_firmware(struct netxen_adapter *adapter)
1226{
1227        struct pci_dev *pdev = adapter->pdev;
1228        int rc = 0;
1229
1230        adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1231
1232next:
1233        nx_get_next_fwtype(adapter);
1234
1235        if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1236                adapter->fw = NULL;
1237        } else {
1238                rc = request_firmware(&adapter->fw,
1239                                fw_name[adapter->fw_type], &pdev->dev);
1240                if (rc != 0)
1241                        goto next;
1242
1243                rc = netxen_validate_firmware(adapter);
1244                if (rc != 0) {
1245                        release_firmware(adapter->fw);
1246                        msleep(1);
1247                        goto next;
1248                }
1249        }
1250}
1251
1252
1253void
1254netxen_release_firmware(struct netxen_adapter *adapter)
1255{
1256        release_firmware(adapter->fw);
1257        adapter->fw = NULL;
1258}
1259
1260int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1261{
1262        u64 addr;
1263        u32 hi, lo;
1264
1265        if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1266                return 0;
1267
1268        adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1269                                 NETXEN_HOST_DUMMY_DMA_SIZE,
1270                                 &adapter->dummy_dma.phys_addr);
1271        if (adapter->dummy_dma.addr == NULL) {
1272                dev_err(&adapter->pdev->dev,
1273                        "ERROR: Could not allocate dummy DMA memory\n");
1274                return -ENOMEM;
1275        }
1276
1277        addr = (uint64_t) adapter->dummy_dma.phys_addr;
1278        hi = (addr >> 32) & 0xffffffff;
1279        lo = addr & 0xffffffff;
1280
1281        NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1282        NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1283
1284        return 0;
1285}
1286
1287/*
1288 * NetXen DMA watchdog control:
1289 *
1290 *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1291 *      Bit 1           : disable_request => 1 req disable dma watchdog
1292 *      Bit 2           : enable_request =>  1 req enable dma watchdog
1293 *      Bit 3-31        : unused
1294 */
1295void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1296{
1297        int i = 100;
1298        u32 ctrl;
1299
1300        if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1301                return;
1302
1303        if (!adapter->dummy_dma.addr)
1304                return;
1305
1306        ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1307        if ((ctrl & 0x1) != 0) {
1308                NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1309
1310                while ((ctrl & 0x1) != 0) {
1311
1312                        msleep(50);
1313
1314                        ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1315
1316                        if (--i == 0)
1317                                break;
1318                }
1319        }
1320
1321        if (i) {
1322                pci_free_consistent(adapter->pdev,
1323                            NETXEN_HOST_DUMMY_DMA_SIZE,
1324                            adapter->dummy_dma.addr,
1325                            adapter->dummy_dma.phys_addr);
1326                adapter->dummy_dma.addr = NULL;
1327        } else
1328                dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1329}
1330
1331int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1332{
1333        u32 val = 0;
1334        int retries = 60;
1335
1336        if (pegtune_val)
1337                return 0;
1338
1339        do {
1340                val = NXRD32(adapter, CRB_CMDPEG_STATE);
1341                switch (val) {
1342                case PHAN_INITIALIZE_COMPLETE:
1343                case PHAN_INITIALIZE_ACK:
1344                        return 0;
1345                case PHAN_INITIALIZE_FAILED:
1346                        goto out_err;
1347                default:
1348                        break;
1349                }
1350
1351                msleep(500);
1352
1353        } while (--retries);
1354
1355        NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1356
1357out_err:
1358        dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1359        return -EIO;
1360}
1361
1362static int
1363netxen_receive_peg_ready(struct netxen_adapter *adapter)
1364{
1365        u32 val = 0;
1366        int retries = 2000;
1367
1368        do {
1369                val = NXRD32(adapter, CRB_RCVPEG_STATE);
1370
1371                if (val == PHAN_PEG_RCV_INITIALIZED)
1372                        return 0;
1373
1374                msleep(10);
1375
1376        } while (--retries);
1377
1378        if (!retries) {
1379                printk(KERN_ERR "Receive Peg initialization not "
1380                              "complete, state: 0x%x.\n", val);
1381                return -EIO;
1382        }
1383
1384        return 0;
1385}
1386
1387int netxen_init_firmware(struct netxen_adapter *adapter)
1388{
1389        int err;
1390
1391        err = netxen_receive_peg_ready(adapter);
1392        if (err)
1393                return err;
1394
1395        NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1396        NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1397        NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1398
1399        if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1400                NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1401
1402        return err;
1403}
1404
1405static void
1406netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1407{
1408        u32 cable_OUI;
1409        u16 cable_len;
1410        u16 link_speed;
1411        u8  link_status, module, duplex, autoneg;
1412        struct net_device *netdev = adapter->netdev;
1413
1414        adapter->has_link_events = 1;
1415
1416        cable_OUI = msg->body[1] & 0xffffffff;
1417        cable_len = (msg->body[1] >> 32) & 0xffff;
1418        link_speed = (msg->body[1] >> 48) & 0xffff;
1419
1420        link_status = msg->body[2] & 0xff;
1421        duplex = (msg->body[2] >> 16) & 0xff;
1422        autoneg = (msg->body[2] >> 24) & 0xff;
1423
1424        module = (msg->body[2] >> 8) & 0xff;
1425        if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1426                printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1427                                netdev->name, cable_OUI, cable_len);
1428        } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1429                printk(KERN_INFO "%s: unsupported cable length %d\n",
1430                                netdev->name, cable_len);
1431        }
1432
1433        /* update link parameters */
1434        if (duplex == LINKEVENT_FULL_DUPLEX)
1435                adapter->link_duplex = DUPLEX_FULL;
1436        else
1437                adapter->link_duplex = DUPLEX_HALF;
1438        adapter->module_type = module;
1439        adapter->link_autoneg = autoneg;
1440        adapter->link_speed = link_speed;
1441
1442        netxen_advert_link_change(adapter, link_status);
1443}
1444
1445static void
1446netxen_handle_fw_message(int desc_cnt, int index,
1447                struct nx_host_sds_ring *sds_ring)
1448{
1449        nx_fw_msg_t msg;
1450        struct status_desc *desc;
1451        int i = 0, opcode;
1452
1453        while (desc_cnt > 0 && i < 8) {
1454                desc = &sds_ring->desc_head[index];
1455                msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1456                msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1457
1458                index = get_next_index(index, sds_ring->num_desc);
1459                desc_cnt--;
1460        }
1461
1462        opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1463        switch (opcode) {
1464        case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1465                netxen_handle_linkevent(sds_ring->adapter, &msg);
1466                break;
1467        default:
1468                break;
1469        }
1470}
1471
1472static int
1473netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1474                struct nx_host_rds_ring *rds_ring,
1475                struct netxen_rx_buffer *buffer)
1476{
1477        struct sk_buff *skb;
1478        dma_addr_t dma;
1479        struct pci_dev *pdev = adapter->pdev;
1480
1481        buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1482        if (!buffer->skb)
1483                return 1;
1484
1485        skb = buffer->skb;
1486
1487        if (!adapter->ahw.cut_through)
1488                skb_reserve(skb, 2);
1489
1490        dma = pci_map_single(pdev, skb->data,
1491                        rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1492
1493        if (pci_dma_mapping_error(pdev, dma)) {
1494                dev_kfree_skb_any(skb);
1495                buffer->skb = NULL;
1496                return 1;
1497        }
1498
1499        buffer->skb = skb;
1500        buffer->dma = dma;
1501        buffer->state = NETXEN_BUFFER_BUSY;
1502
1503        return 0;
1504}
1505
1506static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1507                struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1508{
1509        struct netxen_rx_buffer *buffer;
1510        struct sk_buff *skb;
1511
1512        buffer = &rds_ring->rx_buf_arr[index];
1513
1514        pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1515                        PCI_DMA_FROMDEVICE);
1516
1517        skb = buffer->skb;
1518        if (!skb)
1519                goto no_skb;
1520
1521        if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1522            && cksum == STATUS_CKSUM_OK)) {
1523                adapter->stats.csummed++;
1524                skb->ip_summed = CHECKSUM_UNNECESSARY;
1525        } else
1526                skb->ip_summed = CHECKSUM_NONE;
1527
1528        buffer->skb = NULL;
1529no_skb:
1530        buffer->state = NETXEN_BUFFER_FREE;
1531        return skb;
1532}
1533
1534static struct netxen_rx_buffer *
1535netxen_process_rcv(struct netxen_adapter *adapter,
1536                struct nx_host_sds_ring *sds_ring,
1537                int ring, u64 sts_data0)
1538{
1539        struct net_device *netdev = adapter->netdev;
1540        struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1541        struct netxen_rx_buffer *buffer;
1542        struct sk_buff *skb;
1543        struct nx_host_rds_ring *rds_ring;
1544        int index, length, cksum, pkt_offset;
1545
1546        if (unlikely(ring >= adapter->max_rds_rings))
1547                return NULL;
1548
1549        rds_ring = &recv_ctx->rds_rings[ring];
1550
1551        index = netxen_get_sts_refhandle(sts_data0);
1552        if (unlikely(index >= rds_ring->num_desc))
1553                return NULL;
1554
1555        buffer = &rds_ring->rx_buf_arr[index];
1556
1557        length = netxen_get_sts_totallength(sts_data0);
1558        cksum  = netxen_get_sts_status(sts_data0);
1559        pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1560
1561        skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1562        if (!skb)
1563                return buffer;
1564
1565        if (length > rds_ring->skb_size)
1566                skb_put(skb, rds_ring->skb_size);
1567        else
1568                skb_put(skb, length);
1569
1570
1571        if (pkt_offset)
1572                skb_pull(skb, pkt_offset);
1573
1574        skb->protocol = eth_type_trans(skb, netdev);
1575
1576        napi_gro_receive(&sds_ring->napi, skb);
1577
1578        adapter->stats.rx_pkts++;
1579        adapter->stats.rxbytes += length;
1580
1581        return buffer;
1582}
1583
1584#define TCP_HDR_SIZE            20
1585#define TCP_TS_OPTION_SIZE      12
1586#define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1587
1588static struct netxen_rx_buffer *
1589netxen_process_lro(struct netxen_adapter *adapter,
1590                struct nx_host_sds_ring *sds_ring,
1591                int ring, u64 sts_data0, u64 sts_data1)
1592{
1593        struct net_device *netdev = adapter->netdev;
1594        struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1595        struct netxen_rx_buffer *buffer;
1596        struct sk_buff *skb;
1597        struct nx_host_rds_ring *rds_ring;
1598        struct iphdr *iph;
1599        struct tcphdr *th;
1600        bool push, timestamp;
1601        int l2_hdr_offset, l4_hdr_offset;
1602        int index;
1603        u16 lro_length, length, data_offset;
1604        u32 seq_number;
1605        u8 vhdr_len = 0;
1606
1607        if (unlikely(ring >= adapter->max_rds_rings))
1608                return NULL;
1609
1610        rds_ring = &recv_ctx->rds_rings[ring];
1611
1612        index = netxen_get_lro_sts_refhandle(sts_data0);
1613        if (unlikely(index >= rds_ring->num_desc))
1614                return NULL;
1615
1616        buffer = &rds_ring->rx_buf_arr[index];
1617
1618        timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1619        lro_length = netxen_get_lro_sts_length(sts_data0);
1620        l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1621        l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1622        push = netxen_get_lro_sts_push_flag(sts_data0);
1623        seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1624
1625        skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1626        if (!skb)
1627                return buffer;
1628
1629        if (timestamp)
1630                data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1631        else
1632                data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1633
1634        skb_put(skb, lro_length + data_offset);
1635
1636        skb_pull(skb, l2_hdr_offset);
1637        skb->protocol = eth_type_trans(skb, netdev);
1638
1639        if (skb->protocol == htons(ETH_P_8021Q))
1640                vhdr_len = VLAN_HLEN;
1641        iph = (struct iphdr *)(skb->data + vhdr_len);
1642        th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1643
1644        length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1645        csum_replace2(&iph->check, iph->tot_len, htons(length));
1646        iph->tot_len = htons(length);
1647        th->psh = push;
1648        th->seq = htonl(seq_number);
1649
1650        length = skb->len;
1651
1652        if (adapter->flags & NETXEN_FW_MSS_CAP)
1653                skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1654
1655        netif_receive_skb(skb);
1656
1657        adapter->stats.lro_pkts++;
1658        adapter->stats.rxbytes += length;
1659
1660        return buffer;
1661}
1662
1663#define netxen_merge_rx_buffers(list, head) \
1664        do { list_splice_tail_init(list, head); } while (0);
1665
1666int
1667netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1668{
1669        struct netxen_adapter *adapter = sds_ring->adapter;
1670
1671        struct list_head *cur;
1672
1673        struct status_desc *desc;
1674        struct netxen_rx_buffer *rxbuf;
1675
1676        u32 consumer = sds_ring->consumer;
1677
1678        int count = 0;
1679        u64 sts_data0, sts_data1;
1680        int opcode, ring = 0, desc_cnt;
1681
1682        while (count < max) {
1683                desc = &sds_ring->desc_head[consumer];
1684                sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1685
1686                if (!(sts_data0 & STATUS_OWNER_HOST))
1687                        break;
1688
1689                desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1690
1691                opcode = netxen_get_sts_opcode(sts_data0);
1692
1693                switch (opcode) {
1694                case NETXEN_NIC_RXPKT_DESC:
1695                case NETXEN_OLD_RXPKT_DESC:
1696                case NETXEN_NIC_SYN_OFFLOAD:
1697                        ring = netxen_get_sts_type(sts_data0);
1698                        rxbuf = netxen_process_rcv(adapter, sds_ring,
1699                                        ring, sts_data0);
1700                        break;
1701                case NETXEN_NIC_LRO_DESC:
1702                        ring = netxen_get_lro_sts_type(sts_data0);
1703                        sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1704                        rxbuf = netxen_process_lro(adapter, sds_ring,
1705                                        ring, sts_data0, sts_data1);
1706                        break;
1707                case NETXEN_NIC_RESPONSE_DESC:
1708                        netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1709                default:
1710                        goto skip;
1711                }
1712
1713                WARN_ON(desc_cnt > 1);
1714
1715                if (rxbuf)
1716                        list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1717
1718skip:
1719                for (; desc_cnt > 0; desc_cnt--) {
1720                        desc = &sds_ring->desc_head[consumer];
1721                        desc->status_desc_data[0] =
1722                                cpu_to_le64(STATUS_OWNER_PHANTOM);
1723                        consumer = get_next_index(consumer, sds_ring->num_desc);
1724                }
1725                count++;
1726        }
1727
1728        for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1729                struct nx_host_rds_ring *rds_ring =
1730                        &adapter->recv_ctx.rds_rings[ring];
1731
1732                if (!list_empty(&sds_ring->free_list[ring])) {
1733                        list_for_each(cur, &sds_ring->free_list[ring]) {
1734                                rxbuf = list_entry(cur,
1735                                                struct netxen_rx_buffer, list);
1736                                netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1737                        }
1738                        spin_lock(&rds_ring->lock);
1739                        netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1740                                                &rds_ring->free_list);
1741                        spin_unlock(&rds_ring->lock);
1742                }
1743
1744                netxen_post_rx_buffers_nodb(adapter, rds_ring);
1745        }
1746
1747        if (count) {
1748                sds_ring->consumer = consumer;
1749                NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1750        }
1751
1752        return count;
1753}
1754
1755/* Process Command status ring */
1756int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1757{
1758        u32 sw_consumer, hw_consumer;
1759        int count = 0, i;
1760        struct netxen_cmd_buffer *buffer;
1761        struct pci_dev *pdev = adapter->pdev;
1762        struct net_device *netdev = adapter->netdev;
1763        struct netxen_skb_frag *frag;
1764        int done = 0;
1765        struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1766
1767        if (!spin_trylock_bh(&adapter->tx_clean_lock))
1768                return 1;
1769
1770        sw_consumer = tx_ring->sw_consumer;
1771        hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1772
1773        while (sw_consumer != hw_consumer) {
1774                buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1775                if (buffer->skb) {
1776                        frag = &buffer->frag_array[0];
1777                        pci_unmap_single(pdev, frag->dma, frag->length,
1778                                         PCI_DMA_TODEVICE);
1779                        frag->dma = 0ULL;
1780                        for (i = 1; i < buffer->frag_count; i++) {
1781                                frag++; /* Get the next frag */
1782                                pci_unmap_page(pdev, frag->dma, frag->length,
1783                                               PCI_DMA_TODEVICE);
1784                                frag->dma = 0ULL;
1785                        }
1786
1787                        adapter->stats.xmitfinished++;
1788                        dev_kfree_skb_any(buffer->skb);
1789                        buffer->skb = NULL;
1790                }
1791
1792                sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1793                if (++count >= MAX_STATUS_HANDLE)
1794                        break;
1795        }
1796
1797        tx_ring->sw_consumer = sw_consumer;
1798
1799        if (count && netif_running(netdev)) {
1800                smp_mb();
1801
1802                if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1803                        if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1804                                netif_wake_queue(netdev);
1805                adapter->tx_timeo_cnt = 0;
1806        }
1807        /*
1808         * If everything is freed up to consumer then check if the ring is full
1809         * If the ring is full then check if more needs to be freed and
1810         * schedule the call back again.
1811         *
1812         * This happens when there are 2 CPUs. One could be freeing and the
1813         * other filling it. If the ring is full when we get out of here and
1814         * the card has already interrupted the host then the host can miss the
1815         * interrupt.
1816         *
1817         * There is still a possible race condition and the host could miss an
1818         * interrupt. The card has to take care of this.
1819         */
1820        hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1821        done = (sw_consumer == hw_consumer);
1822        spin_unlock_bh(&adapter->tx_clean_lock);
1823
1824        return done;
1825}
1826
1827void
1828netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1829        struct nx_host_rds_ring *rds_ring)
1830{
1831        struct rcv_desc *pdesc;
1832        struct netxen_rx_buffer *buffer;
1833        int producer, count = 0;
1834        netxen_ctx_msg msg = 0;
1835        struct list_head *head;
1836
1837        producer = rds_ring->producer;
1838
1839        head = &rds_ring->free_list;
1840        while (!list_empty(head)) {
1841
1842                buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1843
1844                if (!buffer->skb) {
1845                        if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1846                                break;
1847                }
1848
1849                count++;
1850                list_del(&buffer->list);
1851
1852                /* make a rcv descriptor  */
1853                pdesc = &rds_ring->desc_head[producer];
1854                pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1855                pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1856                pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1857
1858                producer = get_next_index(producer, rds_ring->num_desc);
1859        }
1860
1861        if (count) {
1862                rds_ring->producer = producer;
1863                NXWRIO(adapter, rds_ring->crb_rcv_producer,
1864                                (producer-1) & (rds_ring->num_desc-1));
1865
1866                if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1867                        /*
1868                         * Write a doorbell msg to tell phanmon of change in
1869                         * receive ring producer
1870                         * Only for firmware version < 4.0.0
1871                         */
1872                        netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1873                        netxen_set_msg_privid(msg);
1874                        netxen_set_msg_count(msg,
1875                                             ((producer - 1) &
1876                                              (rds_ring->num_desc - 1)));
1877                        netxen_set_msg_ctxid(msg, adapter->portnum);
1878                        netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1879                        NXWRIO(adapter, DB_NORMALIZE(adapter,
1880                                        NETXEN_RCV_PRODUCER_OFFSET), msg);
1881                }
1882        }
1883}
1884
1885static void
1886netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1887                struct nx_host_rds_ring *rds_ring)
1888{
1889        struct rcv_desc *pdesc;
1890        struct netxen_rx_buffer *buffer;
1891        int producer, count = 0;
1892        struct list_head *head;
1893
1894        if (!spin_trylock(&rds_ring->lock))
1895                return;
1896
1897        producer = rds_ring->producer;
1898
1899        head = &rds_ring->free_list;
1900        while (!list_empty(head)) {
1901
1902                buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1903
1904                if (!buffer->skb) {
1905                        if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1906                                break;
1907                }
1908
1909                count++;
1910                list_del(&buffer->list);
1911
1912                /* make a rcv descriptor  */
1913                pdesc = &rds_ring->desc_head[producer];
1914                pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1915                pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1916                pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1917
1918                producer = get_next_index(producer, rds_ring->num_desc);
1919        }
1920
1921        if (count) {
1922                rds_ring->producer = producer;
1923                NXWRIO(adapter, rds_ring->crb_rcv_producer,
1924                                (producer - 1) & (rds_ring->num_desc - 1));
1925        }
1926        spin_unlock(&rds_ring->lock);
1927}
1928
1929void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1930{
1931        memset(&adapter->stats, 0, sizeof(adapter->stats));
1932}
1933
1934