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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * Copyright (C) 2003 - 2009 NetXen, Inc.
0004  * Copyright (C) 2009 - QLogic Corporation.
0005  * All rights reserved.
0006  */
0007 
0008 #include <linux/netdevice.h>
0009 #include <linux/delay.h>
0010 #include <linux/slab.h>
0011 #include <linux/if_vlan.h>
0012 #include <net/checksum.h>
0013 #include "netxen_nic.h"
0014 #include "netxen_nic_hw.h"
0015 
0016 struct crb_addr_pair {
0017     u32 addr;
0018     u32 data;
0019 };
0020 
0021 #define NETXEN_MAX_CRB_XFORM 60
0022 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
0023 #define NETXEN_ADDR_ERROR (0xffffffff)
0024 
0025 #define crb_addr_transform(name) \
0026     crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
0027     NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
0028 
0029 #define NETXEN_NIC_XDMA_RESET 0x8000ff
0030 
0031 static void
0032 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
0033         struct nx_host_rds_ring *rds_ring);
0034 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
0035 
0036 static void crb_addr_transform_setup(void)
0037 {
0038     crb_addr_transform(XDMA);
0039     crb_addr_transform(TIMR);
0040     crb_addr_transform(SRE);
0041     crb_addr_transform(SQN3);
0042     crb_addr_transform(SQN2);
0043     crb_addr_transform(SQN1);
0044     crb_addr_transform(SQN0);
0045     crb_addr_transform(SQS3);
0046     crb_addr_transform(SQS2);
0047     crb_addr_transform(SQS1);
0048     crb_addr_transform(SQS0);
0049     crb_addr_transform(RPMX7);
0050     crb_addr_transform(RPMX6);
0051     crb_addr_transform(RPMX5);
0052     crb_addr_transform(RPMX4);
0053     crb_addr_transform(RPMX3);
0054     crb_addr_transform(RPMX2);
0055     crb_addr_transform(RPMX1);
0056     crb_addr_transform(RPMX0);
0057     crb_addr_transform(ROMUSB);
0058     crb_addr_transform(SN);
0059     crb_addr_transform(QMN);
0060     crb_addr_transform(QMS);
0061     crb_addr_transform(PGNI);
0062     crb_addr_transform(PGND);
0063     crb_addr_transform(PGN3);
0064     crb_addr_transform(PGN2);
0065     crb_addr_transform(PGN1);
0066     crb_addr_transform(PGN0);
0067     crb_addr_transform(PGSI);
0068     crb_addr_transform(PGSD);
0069     crb_addr_transform(PGS3);
0070     crb_addr_transform(PGS2);
0071     crb_addr_transform(PGS1);
0072     crb_addr_transform(PGS0);
0073     crb_addr_transform(PS);
0074     crb_addr_transform(PH);
0075     crb_addr_transform(NIU);
0076     crb_addr_transform(I2Q);
0077     crb_addr_transform(EG);
0078     crb_addr_transform(MN);
0079     crb_addr_transform(MS);
0080     crb_addr_transform(CAS2);
0081     crb_addr_transform(CAS1);
0082     crb_addr_transform(CAS0);
0083     crb_addr_transform(CAM);
0084     crb_addr_transform(C2C1);
0085     crb_addr_transform(C2C0);
0086     crb_addr_transform(SMB);
0087     crb_addr_transform(OCM0);
0088     crb_addr_transform(I2C0);
0089 }
0090 
0091 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
0092 {
0093     struct netxen_recv_context *recv_ctx;
0094     struct nx_host_rds_ring *rds_ring;
0095     struct netxen_rx_buffer *rx_buf;
0096     int i, ring;
0097 
0098     recv_ctx = &adapter->recv_ctx;
0099     for (ring = 0; ring < adapter->max_rds_rings; ring++) {
0100         rds_ring = &recv_ctx->rds_rings[ring];
0101         for (i = 0; i < rds_ring->num_desc; ++i) {
0102             rx_buf = &(rds_ring->rx_buf_arr[i]);
0103             if (rx_buf->state == NETXEN_BUFFER_FREE)
0104                 continue;
0105             dma_unmap_single(&adapter->pdev->dev, rx_buf->dma,
0106                      rds_ring->dma_size, DMA_FROM_DEVICE);
0107             if (rx_buf->skb != NULL)
0108                 dev_kfree_skb_any(rx_buf->skb);
0109         }
0110     }
0111 }
0112 
0113 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
0114 {
0115     struct netxen_cmd_buffer *cmd_buf;
0116     struct netxen_skb_frag *buffrag;
0117     int i, j;
0118     struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
0119 
0120     spin_lock_bh(&adapter->tx_clean_lock);
0121     cmd_buf = tx_ring->cmd_buf_arr;
0122     for (i = 0; i < tx_ring->num_desc; i++) {
0123         buffrag = cmd_buf->frag_array;
0124         if (buffrag->dma) {
0125             dma_unmap_single(&adapter->pdev->dev, buffrag->dma,
0126                      buffrag->length, DMA_TO_DEVICE);
0127             buffrag->dma = 0ULL;
0128         }
0129         for (j = 1; j < cmd_buf->frag_count; j++) {
0130             buffrag++;
0131             if (buffrag->dma) {
0132                 dma_unmap_page(&adapter->pdev->dev,
0133                            buffrag->dma, buffrag->length,
0134                            DMA_TO_DEVICE);
0135                 buffrag->dma = 0ULL;
0136             }
0137         }
0138         if (cmd_buf->skb) {
0139             dev_kfree_skb_any(cmd_buf->skb);
0140             cmd_buf->skb = NULL;
0141         }
0142         cmd_buf++;
0143     }
0144     spin_unlock_bh(&adapter->tx_clean_lock);
0145 }
0146 
0147 void netxen_free_sw_resources(struct netxen_adapter *adapter)
0148 {
0149     struct netxen_recv_context *recv_ctx;
0150     struct nx_host_rds_ring *rds_ring;
0151     struct nx_host_tx_ring *tx_ring;
0152     int ring;
0153 
0154     recv_ctx = &adapter->recv_ctx;
0155 
0156     if (recv_ctx->rds_rings == NULL)
0157         goto skip_rds;
0158 
0159     for (ring = 0; ring < adapter->max_rds_rings; ring++) {
0160         rds_ring = &recv_ctx->rds_rings[ring];
0161         vfree(rds_ring->rx_buf_arr);
0162         rds_ring->rx_buf_arr = NULL;
0163     }
0164     kfree(recv_ctx->rds_rings);
0165 
0166 skip_rds:
0167     if (adapter->tx_ring == NULL)
0168         return;
0169 
0170     tx_ring = adapter->tx_ring;
0171     vfree(tx_ring->cmd_buf_arr);
0172     kfree(tx_ring);
0173     adapter->tx_ring = NULL;
0174 }
0175 
0176 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
0177 {
0178     struct netxen_recv_context *recv_ctx;
0179     struct nx_host_rds_ring *rds_ring;
0180     struct nx_host_sds_ring *sds_ring;
0181     struct nx_host_tx_ring *tx_ring;
0182     struct netxen_rx_buffer *rx_buf;
0183     int ring, i;
0184 
0185     struct netxen_cmd_buffer *cmd_buf_arr;
0186     struct net_device *netdev = adapter->netdev;
0187 
0188     tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
0189     if (tx_ring == NULL)
0190         return -ENOMEM;
0191 
0192     adapter->tx_ring = tx_ring;
0193 
0194     tx_ring->num_desc = adapter->num_txd;
0195     tx_ring->txq = netdev_get_tx_queue(netdev, 0);
0196 
0197     cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
0198     if (cmd_buf_arr == NULL)
0199         goto err_out;
0200 
0201     tx_ring->cmd_buf_arr = cmd_buf_arr;
0202 
0203     recv_ctx = &adapter->recv_ctx;
0204 
0205     rds_ring = kcalloc(adapter->max_rds_rings,
0206                sizeof(struct nx_host_rds_ring), GFP_KERNEL);
0207     if (rds_ring == NULL)
0208         goto err_out;
0209 
0210     recv_ctx->rds_rings = rds_ring;
0211 
0212     for (ring = 0; ring < adapter->max_rds_rings; ring++) {
0213         rds_ring = &recv_ctx->rds_rings[ring];
0214         switch (ring) {
0215         case RCV_RING_NORMAL:
0216             rds_ring->num_desc = adapter->num_rxd;
0217             if (adapter->ahw.cut_through) {
0218                 rds_ring->dma_size =
0219                     NX_CT_DEFAULT_RX_BUF_LEN;
0220                 rds_ring->skb_size =
0221                     NX_CT_DEFAULT_RX_BUF_LEN;
0222             } else {
0223                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
0224                     rds_ring->dma_size =
0225                         NX_P3_RX_BUF_MAX_LEN;
0226                 else
0227                     rds_ring->dma_size =
0228                         NX_P2_RX_BUF_MAX_LEN;
0229                 rds_ring->skb_size =
0230                     rds_ring->dma_size + NET_IP_ALIGN;
0231             }
0232             break;
0233 
0234         case RCV_RING_JUMBO:
0235             rds_ring->num_desc = adapter->num_jumbo_rxd;
0236             if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
0237                 rds_ring->dma_size =
0238                     NX_P3_RX_JUMBO_BUF_MAX_LEN;
0239             else
0240                 rds_ring->dma_size =
0241                     NX_P2_RX_JUMBO_BUF_MAX_LEN;
0242 
0243             if (adapter->capabilities & NX_CAP0_HW_LRO)
0244                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
0245 
0246             rds_ring->skb_size =
0247                 rds_ring->dma_size + NET_IP_ALIGN;
0248             break;
0249 
0250         case RCV_RING_LRO:
0251             rds_ring->num_desc = adapter->num_lro_rxd;
0252             rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
0253             rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
0254             break;
0255 
0256         }
0257         rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
0258         if (rds_ring->rx_buf_arr == NULL)
0259             /* free whatever was already allocated */
0260             goto err_out;
0261 
0262         INIT_LIST_HEAD(&rds_ring->free_list);
0263         /*
0264          * Now go through all of them, set reference handles
0265          * and put them in the queues.
0266          */
0267         rx_buf = rds_ring->rx_buf_arr;
0268         for (i = 0; i < rds_ring->num_desc; i++) {
0269             list_add_tail(&rx_buf->list,
0270                     &rds_ring->free_list);
0271             rx_buf->ref_handle = i;
0272             rx_buf->state = NETXEN_BUFFER_FREE;
0273             rx_buf++;
0274         }
0275         spin_lock_init(&rds_ring->lock);
0276     }
0277 
0278     for (ring = 0; ring < adapter->max_sds_rings; ring++) {
0279         sds_ring = &recv_ctx->sds_rings[ring];
0280         sds_ring->irq = adapter->msix_entries[ring].vector;
0281         sds_ring->adapter = adapter;
0282         sds_ring->num_desc = adapter->num_rxd;
0283 
0284         for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
0285             INIT_LIST_HEAD(&sds_ring->free_list[i]);
0286     }
0287 
0288     return 0;
0289 
0290 err_out:
0291     netxen_free_sw_resources(adapter);
0292     return -ENOMEM;
0293 }
0294 
0295 /*
0296  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
0297  * address to external PCI CRB address.
0298  */
0299 static u32 netxen_decode_crb_addr(u32 addr)
0300 {
0301     int i;
0302     u32 base_addr, offset, pci_base;
0303 
0304     crb_addr_transform_setup();
0305 
0306     pci_base = NETXEN_ADDR_ERROR;
0307     base_addr = addr & 0xfff00000;
0308     offset = addr & 0x000fffff;
0309 
0310     for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
0311         if (crb_addr_xform[i] == base_addr) {
0312             pci_base = i << 20;
0313             break;
0314         }
0315     }
0316     if (pci_base == NETXEN_ADDR_ERROR)
0317         return pci_base;
0318     else
0319         return pci_base + offset;
0320 }
0321 
0322 #define NETXEN_MAX_ROM_WAIT_USEC    100
0323 
0324 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
0325 {
0326     long timeout = 0;
0327     long done = 0;
0328 
0329     cond_resched();
0330 
0331     while (done == 0) {
0332         done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
0333         done &= 2;
0334         if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
0335             dev_err(&adapter->pdev->dev,
0336                 "Timeout reached  waiting for rom done");
0337             return -EIO;
0338         }
0339         udelay(1);
0340     }
0341     return 0;
0342 }
0343 
0344 static int do_rom_fast_read(struct netxen_adapter *adapter,
0345                 int addr, int *valp)
0346 {
0347     NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
0348     NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
0349     NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
0350     NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
0351     if (netxen_wait_rom_done(adapter)) {
0352         printk("Error waiting for rom done\n");
0353         return -EIO;
0354     }
0355     /* reset abyte_cnt and dummy_byte_cnt */
0356     NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
0357     udelay(10);
0358     NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
0359 
0360     *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
0361     return 0;
0362 }
0363 
0364 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
0365                   u8 *bytes, size_t size)
0366 {
0367     int addridx;
0368     int ret = 0;
0369 
0370     for (addridx = addr; addridx < (addr + size); addridx += 4) {
0371         int v;
0372         ret = do_rom_fast_read(adapter, addridx, &v);
0373         if (ret != 0)
0374             break;
0375         *(__le32 *)bytes = cpu_to_le32(v);
0376         bytes += 4;
0377     }
0378 
0379     return ret;
0380 }
0381 
0382 int
0383 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
0384                 u8 *bytes, size_t size)
0385 {
0386     int ret;
0387 
0388     ret = netxen_rom_lock(adapter);
0389     if (ret < 0)
0390         return ret;
0391 
0392     ret = do_rom_fast_read_words(adapter, addr, bytes, size);
0393 
0394     netxen_rom_unlock(adapter);
0395     return ret;
0396 }
0397 
0398 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
0399 {
0400     int ret;
0401 
0402     if (netxen_rom_lock(adapter) != 0)
0403         return -EIO;
0404 
0405     ret = do_rom_fast_read(adapter, addr, valp);
0406     netxen_rom_unlock(adapter);
0407     return ret;
0408 }
0409 
0410 #define NETXEN_BOARDTYPE        0x4008
0411 #define NETXEN_BOARDNUM         0x400c
0412 #define NETXEN_CHIPNUM          0x4010
0413 
0414 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
0415 {
0416     int addr, val;
0417     int i, n, init_delay = 0;
0418     struct crb_addr_pair *buf;
0419     unsigned offset;
0420     u32 off;
0421 
0422     /* resetall */
0423     netxen_rom_lock(adapter);
0424     NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
0425     netxen_rom_unlock(adapter);
0426 
0427     if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
0428         if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
0429             (n != 0xcafecafe) ||
0430             netxen_rom_fast_read(adapter, 4, &n) != 0) {
0431             printk(KERN_ERR "%s: ERROR Reading crb_init area: "
0432                     "n: %08x\n", netxen_nic_driver_name, n);
0433             return -EIO;
0434         }
0435         offset = n & 0xffffU;
0436         n = (n >> 16) & 0xffffU;
0437     } else {
0438         if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
0439             !(n & 0x80000000)) {
0440             printk(KERN_ERR "%s: ERROR Reading crb_init area: "
0441                     "n: %08x\n", netxen_nic_driver_name, n);
0442             return -EIO;
0443         }
0444         offset = 1;
0445         n &= ~0x80000000;
0446     }
0447 
0448     if (n >= 1024) {
0449         printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
0450                " initialized.\n", __func__, n);
0451         return -EIO;
0452     }
0453 
0454     buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
0455     if (buf == NULL)
0456         return -ENOMEM;
0457 
0458     for (i = 0; i < n; i++) {
0459         if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
0460         netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
0461             kfree(buf);
0462             return -EIO;
0463         }
0464 
0465         buf[i].addr = addr;
0466         buf[i].data = val;
0467 
0468     }
0469 
0470     for (i = 0; i < n; i++) {
0471 
0472         off = netxen_decode_crb_addr(buf[i].addr);
0473         if (off == NETXEN_ADDR_ERROR) {
0474             printk(KERN_ERR"CRB init value out of range %x\n",
0475                     buf[i].addr);
0476             continue;
0477         }
0478         off += NETXEN_PCI_CRBSPACE;
0479 
0480         if (off & 1)
0481             continue;
0482 
0483         /* skipping cold reboot MAGIC */
0484         if (off == NETXEN_CAM_RAM(0x1fc))
0485             continue;
0486 
0487         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
0488             if (off == (NETXEN_CRB_I2C0 + 0x1c))
0489                 continue;
0490             /* do not reset PCI */
0491             if (off == (ROMUSB_GLB + 0xbc))
0492                 continue;
0493             if (off == (ROMUSB_GLB + 0xa8))
0494                 continue;
0495             if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
0496                 continue;
0497             if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
0498                 continue;
0499             if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
0500                 continue;
0501             if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
0502                 continue;
0503             if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
0504                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
0505                 buf[i].data = 0x1020;
0506             /* skip the function enable register */
0507             if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
0508                 continue;
0509             if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
0510                 continue;
0511             if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
0512                 continue;
0513         }
0514 
0515         init_delay = 1;
0516         /* After writing this register, HW needs time for CRB */
0517         /* to quiet down (else crb_window returns 0xffffffff) */
0518         if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
0519             init_delay = 1000;
0520             if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
0521                 /* hold xdma in reset also */
0522                 buf[i].data = NETXEN_NIC_XDMA_RESET;
0523                 buf[i].data = 0x8000ff;
0524             }
0525         }
0526 
0527         NXWR32(adapter, off, buf[i].data);
0528 
0529         msleep(init_delay);
0530     }
0531     kfree(buf);
0532 
0533     /* disable_peg_cache_all */
0534 
0535     /* unreset_net_cache */
0536     if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
0537         val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
0538         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
0539     }
0540 
0541     /* p2dn replyCount */
0542     NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
0543     /* disable_peg_cache 0 */
0544     NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
0545     /* disable_peg_cache 1 */
0546     NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
0547 
0548     /* peg_clr_all */
0549 
0550     /* peg_clr 0 */
0551     NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
0552     NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
0553     /* peg_clr 1 */
0554     NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
0555     NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
0556     /* peg_clr 2 */
0557     NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
0558     NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
0559     /* peg_clr 3 */
0560     NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
0561     NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
0562     return 0;
0563 }
0564 
0565 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
0566 {
0567     uint32_t i;
0568     struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
0569     __le32 entries = cpu_to_le32(directory->num_entries);
0570 
0571     for (i = 0; i < entries; i++) {
0572 
0573         __le32 offs = cpu_to_le32(directory->findex) +
0574                 (i * cpu_to_le32(directory->entry_size));
0575         __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
0576 
0577         if (tab_type == section)
0578             return (struct uni_table_desc *) &unirom[offs];
0579     }
0580 
0581     return NULL;
0582 }
0583 
0584 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
0585 
0586 static int
0587 netxen_nic_validate_header(struct netxen_adapter *adapter)
0588 {
0589     const u8 *unirom = adapter->fw->data;
0590     struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
0591     u32 fw_file_size = adapter->fw->size;
0592     u32 tab_size;
0593     __le32 entries;
0594     __le32 entry_size;
0595 
0596     if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
0597         return -EINVAL;
0598 
0599     entries = cpu_to_le32(directory->num_entries);
0600     entry_size = cpu_to_le32(directory->entry_size);
0601     tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
0602 
0603     if (fw_file_size < tab_size)
0604         return -EINVAL;
0605 
0606     return 0;
0607 }
0608 
0609 static int
0610 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
0611 {
0612     struct uni_table_desc *tab_desc;
0613     struct uni_data_desc *descr;
0614     const u8 *unirom = adapter->fw->data;
0615     __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
0616                 NX_UNI_BOOTLD_IDX_OFF));
0617     u32 offs;
0618     u32 tab_size;
0619     u32 data_size;
0620 
0621     tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
0622 
0623     if (!tab_desc)
0624         return -EINVAL;
0625 
0626     tab_size = cpu_to_le32(tab_desc->findex) +
0627             (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
0628 
0629     if (adapter->fw->size < tab_size)
0630         return -EINVAL;
0631 
0632     offs = cpu_to_le32(tab_desc->findex) +
0633         (cpu_to_le32(tab_desc->entry_size) * (idx));
0634     descr = (struct uni_data_desc *)&unirom[offs];
0635 
0636     data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
0637 
0638     if (adapter->fw->size < data_size)
0639         return -EINVAL;
0640 
0641     return 0;
0642 }
0643 
0644 static int
0645 netxen_nic_validate_fw(struct netxen_adapter *adapter)
0646 {
0647     struct uni_table_desc *tab_desc;
0648     struct uni_data_desc *descr;
0649     const u8 *unirom = adapter->fw->data;
0650     __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
0651                 NX_UNI_FIRMWARE_IDX_OFF));
0652     u32 offs;
0653     u32 tab_size;
0654     u32 data_size;
0655 
0656     tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
0657 
0658     if (!tab_desc)
0659         return -EINVAL;
0660 
0661     tab_size = cpu_to_le32(tab_desc->findex) +
0662             (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
0663 
0664     if (adapter->fw->size < tab_size)
0665         return -EINVAL;
0666 
0667     offs = cpu_to_le32(tab_desc->findex) +
0668         (cpu_to_le32(tab_desc->entry_size) * (idx));
0669     descr = (struct uni_data_desc *)&unirom[offs];
0670     data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
0671 
0672     if (adapter->fw->size < data_size)
0673         return -EINVAL;
0674 
0675     return 0;
0676 }
0677 
0678 
0679 static int
0680 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
0681 {
0682     struct uni_table_desc *ptab_descr;
0683     const u8 *unirom = adapter->fw->data;
0684     int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
0685             1 : netxen_p3_has_mn(adapter);
0686     __le32 entries;
0687     __le32 entry_size;
0688     u32 tab_size;
0689     u32 i;
0690 
0691     ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
0692     if (ptab_descr == NULL)
0693         return -EINVAL;
0694 
0695     entries = cpu_to_le32(ptab_descr->num_entries);
0696     entry_size = cpu_to_le32(ptab_descr->entry_size);
0697     tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
0698 
0699     if (adapter->fw->size < tab_size)
0700         return -EINVAL;
0701 
0702 nomn:
0703     for (i = 0; i < entries; i++) {
0704 
0705         __le32 flags, file_chiprev, offs;
0706         u8 chiprev = adapter->ahw.revision_id;
0707         uint32_t flagbit;
0708 
0709         offs = cpu_to_le32(ptab_descr->findex) +
0710                 (i * cpu_to_le32(ptab_descr->entry_size));
0711         flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
0712         file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
0713                             NX_UNI_CHIP_REV_OFF));
0714 
0715         flagbit = mn_present ? 1 : 2;
0716 
0717         if ((chiprev == file_chiprev) &&
0718                     ((1ULL << flagbit) & flags)) {
0719             adapter->file_prd_off = offs;
0720             return 0;
0721         }
0722     }
0723 
0724     if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
0725         mn_present = 0;
0726         goto nomn;
0727     }
0728 
0729     return -EINVAL;
0730 }
0731 
0732 static int
0733 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
0734 {
0735     if (netxen_nic_validate_header(adapter)) {
0736         dev_err(&adapter->pdev->dev,
0737                 "unified image: header validation failed\n");
0738         return -EINVAL;
0739     }
0740 
0741     if (netxen_nic_validate_product_offs(adapter)) {
0742         dev_err(&adapter->pdev->dev,
0743                 "unified image: product validation failed\n");
0744         return -EINVAL;
0745     }
0746 
0747     if (netxen_nic_validate_bootld(adapter)) {
0748         dev_err(&adapter->pdev->dev,
0749                 "unified image: bootld validation failed\n");
0750         return -EINVAL;
0751     }
0752 
0753     if (netxen_nic_validate_fw(adapter)) {
0754         dev_err(&adapter->pdev->dev,
0755                 "unified image: firmware validation failed\n");
0756         return -EINVAL;
0757     }
0758 
0759     return 0;
0760 }
0761 
0762 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
0763             u32 section, u32 idx_offset)
0764 {
0765     const u8 *unirom = adapter->fw->data;
0766     int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
0767                                 idx_offset));
0768     struct uni_table_desc *tab_desc;
0769     __le32 offs;
0770 
0771     tab_desc = nx_get_table_desc(unirom, section);
0772 
0773     if (tab_desc == NULL)
0774         return NULL;
0775 
0776     offs = cpu_to_le32(tab_desc->findex) +
0777             (cpu_to_le32(tab_desc->entry_size) * idx);
0778 
0779     return (struct uni_data_desc *)&unirom[offs];
0780 }
0781 
0782 static u8 *
0783 nx_get_bootld_offs(struct netxen_adapter *adapter)
0784 {
0785     u32 offs = NETXEN_BOOTLD_START;
0786 
0787     if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
0788         offs = cpu_to_le32((nx_get_data_desc(adapter,
0789                     NX_UNI_DIR_SECT_BOOTLD,
0790                     NX_UNI_BOOTLD_IDX_OFF))->findex);
0791 
0792     return (u8 *)&adapter->fw->data[offs];
0793 }
0794 
0795 static u8 *
0796 nx_get_fw_offs(struct netxen_adapter *adapter)
0797 {
0798     u32 offs = NETXEN_IMAGE_START;
0799 
0800     if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
0801         offs = cpu_to_le32((nx_get_data_desc(adapter,
0802                     NX_UNI_DIR_SECT_FW,
0803                     NX_UNI_FIRMWARE_IDX_OFF))->findex);
0804 
0805     return (u8 *)&adapter->fw->data[offs];
0806 }
0807 
0808 static __le32
0809 nx_get_fw_size(struct netxen_adapter *adapter)
0810 {
0811     if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
0812         return cpu_to_le32((nx_get_data_desc(adapter,
0813                     NX_UNI_DIR_SECT_FW,
0814                     NX_UNI_FIRMWARE_IDX_OFF))->size);
0815     else
0816         return cpu_to_le32(
0817                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
0818 }
0819 
0820 static __le32
0821 nx_get_fw_version(struct netxen_adapter *adapter)
0822 {
0823     struct uni_data_desc *fw_data_desc;
0824     const struct firmware *fw = adapter->fw;
0825     __le32 major, minor, sub;
0826     const u8 *ver_str;
0827     int i, ret = 0;
0828 
0829     if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
0830 
0831         fw_data_desc = nx_get_data_desc(adapter,
0832                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
0833         ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
0834                 cpu_to_le32(fw_data_desc->size) - 17;
0835 
0836         for (i = 0; i < 12; i++) {
0837             if (!strncmp(&ver_str[i], "REV=", 4)) {
0838                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
0839                             &major, &minor, &sub);
0840                 break;
0841             }
0842         }
0843 
0844         if (ret != 3)
0845             return 0;
0846 
0847         return major + (minor << 8) + (sub << 16);
0848 
0849     } else
0850         return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
0851 }
0852 
0853 static __le32
0854 nx_get_bios_version(struct netxen_adapter *adapter)
0855 {
0856     const struct firmware *fw = adapter->fw;
0857     __le32 bios_ver, prd_off = adapter->file_prd_off;
0858 
0859     if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
0860         bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
0861                         + NX_UNI_BIOS_VERSION_OFF));
0862         return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
0863                             (bios_ver >> 24);
0864     } else
0865         return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
0866 
0867 }
0868 
0869 int
0870 netxen_need_fw_reset(struct netxen_adapter *adapter)
0871 {
0872     u32 count, old_count;
0873     u32 val, version, major, minor, build;
0874     int i, timeout;
0875     u8 fw_type;
0876 
0877     /* NX2031 firmware doesn't support heartbit */
0878     if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
0879         return 1;
0880 
0881     if (adapter->need_fw_reset)
0882         return 1;
0883 
0884     /* last attempt had failed */
0885     if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
0886         return 1;
0887 
0888     old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
0889 
0890     for (i = 0; i < 10; i++) {
0891 
0892         timeout = msleep_interruptible(200);
0893         if (timeout) {
0894             NXWR32(adapter, CRB_CMDPEG_STATE,
0895                     PHAN_INITIALIZE_FAILED);
0896             return -EINTR;
0897         }
0898 
0899         count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
0900         if (count != old_count)
0901             break;
0902     }
0903 
0904     /* firmware is dead */
0905     if (count == old_count)
0906         return 1;
0907 
0908     /* check if we have got newer or different file firmware */
0909     if (adapter->fw) {
0910 
0911         val = nx_get_fw_version(adapter);
0912 
0913         version = NETXEN_DECODE_VERSION(val);
0914 
0915         major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
0916         minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
0917         build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
0918 
0919         if (version > NETXEN_VERSION_CODE(major, minor, build))
0920             return 1;
0921 
0922         if (version == NETXEN_VERSION_CODE(major, minor, build) &&
0923             adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
0924 
0925             val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
0926             fw_type = (val & 0x4) ?
0927                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
0928 
0929             if (adapter->fw_type != fw_type)
0930                 return 1;
0931         }
0932     }
0933 
0934     return 0;
0935 }
0936 
0937 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
0938 
0939 int
0940 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
0941 {
0942     u32 flash_fw_ver, min_fw_ver;
0943 
0944     if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
0945         return 0;
0946 
0947     if (netxen_rom_fast_read(adapter,
0948             NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
0949         dev_err(&adapter->pdev->dev, "Unable to read flash fw"
0950             "version\n");
0951         return -EIO;
0952     }
0953 
0954     flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
0955     min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
0956     if (flash_fw_ver >= min_fw_ver)
0957         return 0;
0958 
0959     dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
0960         "[4.0.505]. Please update firmware on flash\n",
0961         _major(flash_fw_ver), _minor(flash_fw_ver),
0962         _build(flash_fw_ver));
0963     return -EINVAL;
0964 }
0965 
0966 static char *fw_name[] = {
0967     NX_P2_MN_ROMIMAGE_NAME,
0968     NX_P3_CT_ROMIMAGE_NAME,
0969     NX_P3_MN_ROMIMAGE_NAME,
0970     NX_UNIFIED_ROMIMAGE_NAME,
0971     NX_FLASH_ROMIMAGE_NAME,
0972 };
0973 
0974 int
0975 netxen_load_firmware(struct netxen_adapter *adapter)
0976 {
0977     u64 *ptr64;
0978     u32 i, flashaddr, size;
0979     const struct firmware *fw = adapter->fw;
0980     struct pci_dev *pdev = adapter->pdev;
0981 
0982     dev_info(&pdev->dev, "loading firmware from %s\n",
0983             fw_name[adapter->fw_type]);
0984 
0985     if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
0986         NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
0987 
0988     if (fw) {
0989         __le64 data;
0990 
0991         size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
0992 
0993         ptr64 = (u64 *)nx_get_bootld_offs(adapter);
0994         flashaddr = NETXEN_BOOTLD_START;
0995 
0996         for (i = 0; i < size; i++) {
0997             data = cpu_to_le64(ptr64[i]);
0998 
0999             if (adapter->pci_mem_write(adapter, flashaddr, data))
1000                 return -EIO;
1001 
1002             flashaddr += 8;
1003         }
1004 
1005         size = (__force u32)nx_get_fw_size(adapter) / 8;
1006 
1007         ptr64 = (u64 *)nx_get_fw_offs(adapter);
1008         flashaddr = NETXEN_IMAGE_START;
1009 
1010         for (i = 0; i < size; i++) {
1011             data = cpu_to_le64(ptr64[i]);
1012 
1013             if (adapter->pci_mem_write(adapter,
1014                         flashaddr, data))
1015                 return -EIO;
1016 
1017             flashaddr += 8;
1018         }
1019 
1020         size = (__force u32)nx_get_fw_size(adapter) % 8;
1021         if (size) {
1022             data = cpu_to_le64(ptr64[i]);
1023 
1024             if (adapter->pci_mem_write(adapter,
1025                         flashaddr, data))
1026                 return -EIO;
1027         }
1028 
1029     } else {
1030         u64 data;
1031         u32 hi, lo;
1032 
1033         size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1034         flashaddr = NETXEN_BOOTLD_START;
1035 
1036         for (i = 0; i < size; i++) {
1037             if (netxen_rom_fast_read(adapter,
1038                     flashaddr, (int *)&lo) != 0)
1039                 return -EIO;
1040             if (netxen_rom_fast_read(adapter,
1041                     flashaddr + 4, (int *)&hi) != 0)
1042                 return -EIO;
1043 
1044             /* hi, lo are already in host endian byteorder */
1045             data = (((u64)hi << 32) | lo);
1046 
1047             if (adapter->pci_mem_write(adapter,
1048                         flashaddr, data))
1049                 return -EIO;
1050 
1051             flashaddr += 8;
1052         }
1053     }
1054     msleep(1);
1055 
1056     if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1057         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1058         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1059     } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1060         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1061     else {
1062         NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1063         NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1064     }
1065 
1066     return 0;
1067 }
1068 
1069 static int
1070 netxen_validate_firmware(struct netxen_adapter *adapter)
1071 {
1072     __le32 val;
1073     __le32 flash_fw_ver;
1074     u32 file_fw_ver, min_ver, bios;
1075     struct pci_dev *pdev = adapter->pdev;
1076     const struct firmware *fw = adapter->fw;
1077     u8 fw_type = adapter->fw_type;
1078     u32 crbinit_fix_fw;
1079 
1080     if (fw_type == NX_UNIFIED_ROMIMAGE) {
1081         if (netxen_nic_validate_unified_romimage(adapter))
1082             return -EINVAL;
1083     } else {
1084         val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1085         if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1086             return -EINVAL;
1087 
1088         if (fw->size < NX_FW_MIN_SIZE)
1089             return -EINVAL;
1090     }
1091 
1092     val = nx_get_fw_version(adapter);
1093 
1094     if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1095         min_ver = NETXEN_MIN_P3_FW_SUPP;
1096     else
1097         min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1098 
1099     file_fw_ver = NETXEN_DECODE_VERSION(val);
1100 
1101     if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1102         (file_fw_ver < min_ver)) {
1103         dev_err(&pdev->dev,
1104                 "%s: firmware version %d.%d.%d unsupported\n",
1105         fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1106          _build(file_fw_ver));
1107         return -EINVAL;
1108     }
1109     val = nx_get_bios_version(adapter);
1110     if (netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios))
1111         return -EIO;
1112     if ((__force u32)val != bios) {
1113         dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1114                 fw_name[fw_type]);
1115         return -EINVAL;
1116     }
1117 
1118     if (netxen_rom_fast_read(adapter,
1119             NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1120         dev_err(&pdev->dev, "Unable to read flash fw version\n");
1121         return -EIO;
1122     }
1123     flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1124 
1125     /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1126     crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1127     if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1128         NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1129         dev_err(&pdev->dev, "Incompatibility detected between driver "
1130             "and firmware version on flash. This configuration "
1131             "is not recommended. Please update the firmware on "
1132             "flash immediately\n");
1133         return -EINVAL;
1134     }
1135 
1136     /* check if flashed firmware is newer only for no-mn and P2 case*/
1137     if (!netxen_p3_has_mn(adapter) ||
1138         NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1139         if (flash_fw_ver > file_fw_ver) {
1140             dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1141                 fw_name[fw_type]);
1142             return -EINVAL;
1143         }
1144     }
1145 
1146     NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1147     return 0;
1148 }
1149 
1150 static void
1151 nx_get_next_fwtype(struct netxen_adapter *adapter)
1152 {
1153     u8 fw_type;
1154 
1155     switch (adapter->fw_type) {
1156     case NX_UNKNOWN_ROMIMAGE:
1157         fw_type = NX_UNIFIED_ROMIMAGE;
1158         break;
1159 
1160     case NX_UNIFIED_ROMIMAGE:
1161         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1162             fw_type = NX_FLASH_ROMIMAGE;
1163         else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1164             fw_type = NX_P2_MN_ROMIMAGE;
1165         else if (netxen_p3_has_mn(adapter))
1166             fw_type = NX_P3_MN_ROMIMAGE;
1167         else
1168             fw_type = NX_P3_CT_ROMIMAGE;
1169         break;
1170 
1171     case NX_P3_MN_ROMIMAGE:
1172         fw_type = NX_P3_CT_ROMIMAGE;
1173         break;
1174 
1175     case NX_P2_MN_ROMIMAGE:
1176     case NX_P3_CT_ROMIMAGE:
1177     default:
1178         fw_type = NX_FLASH_ROMIMAGE;
1179         break;
1180     }
1181 
1182     adapter->fw_type = fw_type;
1183 }
1184 
1185 static int
1186 netxen_p3_has_mn(struct netxen_adapter *adapter)
1187 {
1188     u32 capability, flashed_ver;
1189     capability = 0;
1190 
1191     /* NX2031 always had MN */
1192     if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1193         return 1;
1194 
1195     netxen_rom_fast_read(adapter,
1196             NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1197     flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1198 
1199     if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1200 
1201         capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1202         if (capability & NX_PEG_TUNE_MN_PRESENT)
1203             return 1;
1204     }
1205     return 0;
1206 }
1207 
1208 void netxen_request_firmware(struct netxen_adapter *adapter)
1209 {
1210     struct pci_dev *pdev = adapter->pdev;
1211     int rc = 0;
1212 
1213     adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1214 
1215 next:
1216     nx_get_next_fwtype(adapter);
1217 
1218     if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1219         adapter->fw = NULL;
1220     } else {
1221         rc = request_firmware(&adapter->fw,
1222                 fw_name[adapter->fw_type], &pdev->dev);
1223         if (rc != 0)
1224             goto next;
1225 
1226         rc = netxen_validate_firmware(adapter);
1227         if (rc != 0) {
1228             release_firmware(adapter->fw);
1229             msleep(1);
1230             goto next;
1231         }
1232     }
1233 }
1234 
1235 
1236 void
1237 netxen_release_firmware(struct netxen_adapter *adapter)
1238 {
1239     release_firmware(adapter->fw);
1240     adapter->fw = NULL;
1241 }
1242 
1243 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1244 {
1245     u64 addr;
1246     u32 hi, lo;
1247 
1248     if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1249         return 0;
1250 
1251     adapter->dummy_dma.addr = dma_alloc_coherent(&adapter->pdev->dev,
1252                              NETXEN_HOST_DUMMY_DMA_SIZE,
1253                              &adapter->dummy_dma.phys_addr,
1254                              GFP_KERNEL);
1255     if (adapter->dummy_dma.addr == NULL) {
1256         dev_err(&adapter->pdev->dev,
1257             "ERROR: Could not allocate dummy DMA memory\n");
1258         return -ENOMEM;
1259     }
1260 
1261     addr = (uint64_t) adapter->dummy_dma.phys_addr;
1262     hi = (addr >> 32) & 0xffffffff;
1263     lo = addr & 0xffffffff;
1264 
1265     NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1266     NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1267 
1268     return 0;
1269 }
1270 
1271 /*
1272  * NetXen DMA watchdog control:
1273  *
1274  *  Bit 0       : enabled => R/O: 1 watchdog active, 0 inactive
1275  *  Bit 1       : disable_request => 1 req disable dma watchdog
1276  *  Bit 2       : enable_request =>  1 req enable dma watchdog
1277  *  Bit 3-31    : unused
1278  */
1279 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1280 {
1281     int i = 100;
1282     u32 ctrl;
1283 
1284     if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1285         return;
1286 
1287     if (!adapter->dummy_dma.addr)
1288         return;
1289 
1290     ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1291     if ((ctrl & 0x1) != 0) {
1292         NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1293 
1294         while ((ctrl & 0x1) != 0) {
1295 
1296             msleep(50);
1297 
1298             ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1299 
1300             if (--i == 0)
1301                 break;
1302         }
1303     }
1304 
1305     if (i) {
1306         dma_free_coherent(&adapter->pdev->dev,
1307                   NETXEN_HOST_DUMMY_DMA_SIZE,
1308                   adapter->dummy_dma.addr,
1309                   adapter->dummy_dma.phys_addr);
1310         adapter->dummy_dma.addr = NULL;
1311     } else
1312         dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1313 }
1314 
1315 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1316 {
1317     u32 val = 0;
1318     int retries = 60;
1319 
1320     if (pegtune_val)
1321         return 0;
1322 
1323     do {
1324         val = NXRD32(adapter, CRB_CMDPEG_STATE);
1325         switch (val) {
1326         case PHAN_INITIALIZE_COMPLETE:
1327         case PHAN_INITIALIZE_ACK:
1328             return 0;
1329         case PHAN_INITIALIZE_FAILED:
1330             goto out_err;
1331         default:
1332             break;
1333         }
1334 
1335         msleep(500);
1336 
1337     } while (--retries);
1338 
1339     NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1340 
1341 out_err:
1342     dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1343     return -EIO;
1344 }
1345 
1346 static int
1347 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1348 {
1349     u32 val = 0;
1350     int retries = 2000;
1351 
1352     do {
1353         val = NXRD32(adapter, CRB_RCVPEG_STATE);
1354 
1355         if (val == PHAN_PEG_RCV_INITIALIZED)
1356             return 0;
1357 
1358         msleep(10);
1359 
1360     } while (--retries);
1361 
1362     pr_err("Receive Peg initialization not complete, state: 0x%x.\n", val);
1363     return -EIO;
1364 }
1365 
1366 int netxen_init_firmware(struct netxen_adapter *adapter)
1367 {
1368     int err;
1369 
1370     err = netxen_receive_peg_ready(adapter);
1371     if (err)
1372         return err;
1373 
1374     NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1375     NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1376     NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1377 
1378     if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1379         NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1380 
1381     return err;
1382 }
1383 
1384 static void
1385 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1386 {
1387     u32 cable_OUI;
1388     u16 cable_len;
1389     u16 link_speed;
1390     u8  link_status, module, duplex, autoneg;
1391     struct net_device *netdev = adapter->netdev;
1392 
1393     adapter->has_link_events = 1;
1394 
1395     cable_OUI = msg->body[1] & 0xffffffff;
1396     cable_len = (msg->body[1] >> 32) & 0xffff;
1397     link_speed = (msg->body[1] >> 48) & 0xffff;
1398 
1399     link_status = msg->body[2] & 0xff;
1400     duplex = (msg->body[2] >> 16) & 0xff;
1401     autoneg = (msg->body[2] >> 24) & 0xff;
1402 
1403     module = (msg->body[2] >> 8) & 0xff;
1404     if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1405         printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1406                 netdev->name, cable_OUI, cable_len);
1407     } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1408         printk(KERN_INFO "%s: unsupported cable length %d\n",
1409                 netdev->name, cable_len);
1410     }
1411 
1412     /* update link parameters */
1413     if (duplex == LINKEVENT_FULL_DUPLEX)
1414         adapter->link_duplex = DUPLEX_FULL;
1415     else
1416         adapter->link_duplex = DUPLEX_HALF;
1417     adapter->module_type = module;
1418     adapter->link_autoneg = autoneg;
1419     adapter->link_speed = link_speed;
1420 
1421     netxen_advert_link_change(adapter, link_status);
1422 }
1423 
1424 static void
1425 netxen_handle_fw_message(int desc_cnt, int index,
1426         struct nx_host_sds_ring *sds_ring)
1427 {
1428     nx_fw_msg_t msg;
1429     struct status_desc *desc;
1430     int i = 0, opcode;
1431 
1432     while (desc_cnt > 0 && i < 8) {
1433         desc = &sds_ring->desc_head[index];
1434         msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1435         msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1436 
1437         index = get_next_index(index, sds_ring->num_desc);
1438         desc_cnt--;
1439     }
1440 
1441     opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1442     switch (opcode) {
1443     case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1444         netxen_handle_linkevent(sds_ring->adapter, &msg);
1445         break;
1446     default:
1447         break;
1448     }
1449 }
1450 
1451 static int
1452 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1453         struct nx_host_rds_ring *rds_ring,
1454         struct netxen_rx_buffer *buffer)
1455 {
1456     struct sk_buff *skb;
1457     dma_addr_t dma;
1458     struct pci_dev *pdev = adapter->pdev;
1459 
1460     buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1461     if (!buffer->skb)
1462         return 1;
1463 
1464     skb = buffer->skb;
1465 
1466     if (!adapter->ahw.cut_through)
1467         skb_reserve(skb, 2);
1468 
1469     dma = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size,
1470                  DMA_FROM_DEVICE);
1471 
1472     if (dma_mapping_error(&pdev->dev, dma)) {
1473         dev_kfree_skb_any(skb);
1474         buffer->skb = NULL;
1475         return 1;
1476     }
1477 
1478     buffer->skb = skb;
1479     buffer->dma = dma;
1480     buffer->state = NETXEN_BUFFER_BUSY;
1481 
1482     return 0;
1483 }
1484 
1485 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1486         struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1487 {
1488     struct netxen_rx_buffer *buffer;
1489     struct sk_buff *skb;
1490 
1491     buffer = &rds_ring->rx_buf_arr[index];
1492 
1493     dma_unmap_single(&adapter->pdev->dev, buffer->dma, rds_ring->dma_size,
1494              DMA_FROM_DEVICE);
1495 
1496     skb = buffer->skb;
1497     if (!skb)
1498         goto no_skb;
1499 
1500     if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1501         && cksum == STATUS_CKSUM_OK)) {
1502         adapter->stats.csummed++;
1503         skb->ip_summed = CHECKSUM_UNNECESSARY;
1504     } else
1505         skb->ip_summed = CHECKSUM_NONE;
1506 
1507     buffer->skb = NULL;
1508 no_skb:
1509     buffer->state = NETXEN_BUFFER_FREE;
1510     return skb;
1511 }
1512 
1513 static struct netxen_rx_buffer *
1514 netxen_process_rcv(struct netxen_adapter *adapter,
1515         struct nx_host_sds_ring *sds_ring,
1516         int ring, u64 sts_data0)
1517 {
1518     struct net_device *netdev = adapter->netdev;
1519     struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1520     struct netxen_rx_buffer *buffer;
1521     struct sk_buff *skb;
1522     struct nx_host_rds_ring *rds_ring;
1523     int index, length, cksum, pkt_offset;
1524 
1525     if (unlikely(ring >= adapter->max_rds_rings))
1526         return NULL;
1527 
1528     rds_ring = &recv_ctx->rds_rings[ring];
1529 
1530     index = netxen_get_sts_refhandle(sts_data0);
1531     if (unlikely(index >= rds_ring->num_desc))
1532         return NULL;
1533 
1534     buffer = &rds_ring->rx_buf_arr[index];
1535 
1536     length = netxen_get_sts_totallength(sts_data0);
1537     cksum  = netxen_get_sts_status(sts_data0);
1538     pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1539 
1540     skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1541     if (!skb)
1542         return buffer;
1543 
1544     if (length > rds_ring->skb_size)
1545         skb_put(skb, rds_ring->skb_size);
1546     else
1547         skb_put(skb, length);
1548 
1549 
1550     if (pkt_offset)
1551         skb_pull(skb, pkt_offset);
1552 
1553     skb->protocol = eth_type_trans(skb, netdev);
1554 
1555     napi_gro_receive(&sds_ring->napi, skb);
1556 
1557     adapter->stats.rx_pkts++;
1558     adapter->stats.rxbytes += length;
1559 
1560     return buffer;
1561 }
1562 
1563 #define TCP_HDR_SIZE            20
1564 #define TCP_TS_OPTION_SIZE      12
1565 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1566 
1567 static struct netxen_rx_buffer *
1568 netxen_process_lro(struct netxen_adapter *adapter,
1569         struct nx_host_sds_ring *sds_ring,
1570         int ring, u64 sts_data0, u64 sts_data1)
1571 {
1572     struct net_device *netdev = adapter->netdev;
1573     struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1574     struct netxen_rx_buffer *buffer;
1575     struct sk_buff *skb;
1576     struct nx_host_rds_ring *rds_ring;
1577     struct iphdr *iph;
1578     struct tcphdr *th;
1579     bool push, timestamp;
1580     int l2_hdr_offset, l4_hdr_offset;
1581     int index;
1582     u16 lro_length, length, data_offset;
1583     u32 seq_number;
1584     u8 vhdr_len = 0;
1585 
1586     if (unlikely(ring >= adapter->max_rds_rings))
1587         return NULL;
1588 
1589     rds_ring = &recv_ctx->rds_rings[ring];
1590 
1591     index = netxen_get_lro_sts_refhandle(sts_data0);
1592     if (unlikely(index >= rds_ring->num_desc))
1593         return NULL;
1594 
1595     buffer = &rds_ring->rx_buf_arr[index];
1596 
1597     timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1598     lro_length = netxen_get_lro_sts_length(sts_data0);
1599     l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1600     l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1601     push = netxen_get_lro_sts_push_flag(sts_data0);
1602     seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1603 
1604     skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1605     if (!skb)
1606         return buffer;
1607 
1608     if (timestamp)
1609         data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1610     else
1611         data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1612 
1613     skb_put(skb, lro_length + data_offset);
1614 
1615     skb_pull(skb, l2_hdr_offset);
1616     skb->protocol = eth_type_trans(skb, netdev);
1617 
1618     if (skb->protocol == htons(ETH_P_8021Q))
1619         vhdr_len = VLAN_HLEN;
1620     iph = (struct iphdr *)(skb->data + vhdr_len);
1621     th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1622 
1623     length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1624     csum_replace2(&iph->check, iph->tot_len, htons(length));
1625     iph->tot_len = htons(length);
1626     th->psh = push;
1627     th->seq = htonl(seq_number);
1628 
1629     length = skb->len;
1630 
1631     if (adapter->flags & NETXEN_FW_MSS_CAP)
1632         skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1633 
1634     netif_receive_skb(skb);
1635 
1636     adapter->stats.lro_pkts++;
1637     adapter->stats.rxbytes += length;
1638 
1639     return buffer;
1640 }
1641 
1642 #define netxen_merge_rx_buffers(list, head) \
1643     do { list_splice_tail_init(list, head); } while (0);
1644 
1645 int
1646 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1647 {
1648     struct netxen_adapter *adapter = sds_ring->adapter;
1649 
1650     struct list_head *cur;
1651 
1652     struct status_desc *desc;
1653     struct netxen_rx_buffer *rxbuf;
1654 
1655     u32 consumer = sds_ring->consumer;
1656 
1657     int count = 0;
1658     u64 sts_data0, sts_data1;
1659     int opcode, ring = 0, desc_cnt;
1660 
1661     while (count < max) {
1662         desc = &sds_ring->desc_head[consumer];
1663         sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1664 
1665         if (!(sts_data0 & STATUS_OWNER_HOST))
1666             break;
1667 
1668         desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1669 
1670         opcode = netxen_get_sts_opcode(sts_data0);
1671 
1672         switch (opcode) {
1673         case NETXEN_NIC_RXPKT_DESC:
1674         case NETXEN_OLD_RXPKT_DESC:
1675         case NETXEN_NIC_SYN_OFFLOAD:
1676             ring = netxen_get_sts_type(sts_data0);
1677             rxbuf = netxen_process_rcv(adapter, sds_ring,
1678                     ring, sts_data0);
1679             break;
1680         case NETXEN_NIC_LRO_DESC:
1681             ring = netxen_get_lro_sts_type(sts_data0);
1682             sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1683             rxbuf = netxen_process_lro(adapter, sds_ring,
1684                     ring, sts_data0, sts_data1);
1685             break;
1686         case NETXEN_NIC_RESPONSE_DESC:
1687             netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1688             goto skip;
1689         default:
1690             goto skip;
1691         }
1692 
1693         WARN_ON(desc_cnt > 1);
1694 
1695         if (rxbuf)
1696             list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1697 
1698 skip:
1699         for (; desc_cnt > 0; desc_cnt--) {
1700             desc = &sds_ring->desc_head[consumer];
1701             desc->status_desc_data[0] =
1702                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1703             consumer = get_next_index(consumer, sds_ring->num_desc);
1704         }
1705         count++;
1706     }
1707 
1708     for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1709         struct nx_host_rds_ring *rds_ring =
1710             &adapter->recv_ctx.rds_rings[ring];
1711 
1712         if (!list_empty(&sds_ring->free_list[ring])) {
1713             list_for_each(cur, &sds_ring->free_list[ring]) {
1714                 rxbuf = list_entry(cur,
1715                         struct netxen_rx_buffer, list);
1716                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1717             }
1718             spin_lock(&rds_ring->lock);
1719             netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1720                         &rds_ring->free_list);
1721             spin_unlock(&rds_ring->lock);
1722         }
1723 
1724         netxen_post_rx_buffers_nodb(adapter, rds_ring);
1725     }
1726 
1727     if (count) {
1728         sds_ring->consumer = consumer;
1729         NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1730     }
1731 
1732     return count;
1733 }
1734 
1735 /* Process Command status ring */
1736 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1737 {
1738     u32 sw_consumer, hw_consumer;
1739     int count = 0, i;
1740     struct netxen_cmd_buffer *buffer;
1741     struct pci_dev *pdev = adapter->pdev;
1742     struct net_device *netdev = adapter->netdev;
1743     struct netxen_skb_frag *frag;
1744     int done = 0;
1745     struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1746 
1747     if (!spin_trylock_bh(&adapter->tx_clean_lock))
1748         return 1;
1749 
1750     sw_consumer = tx_ring->sw_consumer;
1751     hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1752 
1753     while (sw_consumer != hw_consumer) {
1754         buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1755         if (buffer->skb) {
1756             frag = &buffer->frag_array[0];
1757             dma_unmap_single(&pdev->dev, frag->dma, frag->length,
1758                      DMA_TO_DEVICE);
1759             frag->dma = 0ULL;
1760             for (i = 1; i < buffer->frag_count; i++) {
1761                 frag++; /* Get the next frag */
1762                 dma_unmap_page(&pdev->dev, frag->dma,
1763                            frag->length, DMA_TO_DEVICE);
1764                 frag->dma = 0ULL;
1765             }
1766 
1767             adapter->stats.xmitfinished++;
1768             dev_kfree_skb_any(buffer->skb);
1769             buffer->skb = NULL;
1770         }
1771 
1772         sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1773         if (++count >= MAX_STATUS_HANDLE)
1774             break;
1775     }
1776 
1777     tx_ring->sw_consumer = sw_consumer;
1778 
1779     if (count && netif_running(netdev)) {
1780         smp_mb();
1781 
1782         if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1783             if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1784                 netif_wake_queue(netdev);
1785         adapter->tx_timeo_cnt = 0;
1786     }
1787     /*
1788      * If everything is freed up to consumer then check if the ring is full
1789      * If the ring is full then check if more needs to be freed and
1790      * schedule the call back again.
1791      *
1792      * This happens when there are 2 CPUs. One could be freeing and the
1793      * other filling it. If the ring is full when we get out of here and
1794      * the card has already interrupted the host then the host can miss the
1795      * interrupt.
1796      *
1797      * There is still a possible race condition and the host could miss an
1798      * interrupt. The card has to take care of this.
1799      */
1800     hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1801     done = (sw_consumer == hw_consumer);
1802     spin_unlock_bh(&adapter->tx_clean_lock);
1803 
1804     return done;
1805 }
1806 
1807 void
1808 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1809     struct nx_host_rds_ring *rds_ring)
1810 {
1811     struct rcv_desc *pdesc;
1812     struct netxen_rx_buffer *buffer;
1813     int producer, count = 0;
1814     netxen_ctx_msg msg = 0;
1815     struct list_head *head;
1816 
1817     producer = rds_ring->producer;
1818 
1819     head = &rds_ring->free_list;
1820     while (!list_empty(head)) {
1821 
1822         buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1823 
1824         if (!buffer->skb) {
1825             if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1826                 break;
1827         }
1828 
1829         count++;
1830         list_del(&buffer->list);
1831 
1832         /* make a rcv descriptor  */
1833         pdesc = &rds_ring->desc_head[producer];
1834         pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1835         pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1836         pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1837 
1838         producer = get_next_index(producer, rds_ring->num_desc);
1839     }
1840 
1841     if (count) {
1842         rds_ring->producer = producer;
1843         NXWRIO(adapter, rds_ring->crb_rcv_producer,
1844                 (producer-1) & (rds_ring->num_desc-1));
1845 
1846         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1847             /*
1848              * Write a doorbell msg to tell phanmon of change in
1849              * receive ring producer
1850              * Only for firmware version < 4.0.0
1851              */
1852             netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1853             netxen_set_msg_privid(msg);
1854             netxen_set_msg_count(msg,
1855                          ((producer - 1) &
1856                           (rds_ring->num_desc - 1)));
1857             netxen_set_msg_ctxid(msg, adapter->portnum);
1858             netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1859             NXWRIO(adapter, DB_NORMALIZE(adapter,
1860                     NETXEN_RCV_PRODUCER_OFFSET), msg);
1861         }
1862     }
1863 }
1864 
1865 static void
1866 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1867         struct nx_host_rds_ring *rds_ring)
1868 {
1869     struct rcv_desc *pdesc;
1870     struct netxen_rx_buffer *buffer;
1871     int producer, count = 0;
1872     struct list_head *head;
1873 
1874     if (!spin_trylock(&rds_ring->lock))
1875         return;
1876 
1877     producer = rds_ring->producer;
1878 
1879     head = &rds_ring->free_list;
1880     while (!list_empty(head)) {
1881 
1882         buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1883 
1884         if (!buffer->skb) {
1885             if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1886                 break;
1887         }
1888 
1889         count++;
1890         list_del(&buffer->list);
1891 
1892         /* make a rcv descriptor  */
1893         pdesc = &rds_ring->desc_head[producer];
1894         pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1895         pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1896         pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1897 
1898         producer = get_next_index(producer, rds_ring->num_desc);
1899     }
1900 
1901     if (count) {
1902         rds_ring->producer = producer;
1903         NXWRIO(adapter, rds_ring->crb_rcv_producer,
1904                 (producer - 1) & (rds_ring->num_desc - 1));
1905     }
1906     spin_unlock(&rds_ring->lock);
1907 }
1908 
1909 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1910 {
1911     memset(&adapter->stats, 0, sizeof(adapter->stats));
1912 }
1913
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