From 2edbb454428729f450f7a0aabbf95ac62b46b78a Mon Sep 17 00:00:00 2001 From: Dhananjay Phadke Date: Wed, 14 Jan 2009 20:47:30 -0800 Subject: netxen: fix endianness in firmware commands o Set restricted (little endian) data types in firmware command requests and responses. o Remove unnecessary conversion to LE when writing registers. Signed-off-by: Dhananjay Phadke Signed-off-by: David S. Miller --- drivers/net/netxen/netxen_nic_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/netxen/netxen_nic_init.c') diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c index d924468e506..c0e06a65317 100644 --- a/drivers/net/netxen/netxen_nic_init.c +++ b/drivers/net/netxen/netxen_nic_init.c @@ -1277,7 +1277,7 @@ static void netxen_process_rcv(struct netxen_adapter *adapter, int ctxid, dev_kfree_skb_any(skb); for (i = 0; i < nr_frags; i++) { - index = frag_desc->frag_handles[i]; + index = le16_to_cpu(frag_desc->frag_handles[i]); skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum); if (skb) -- cgit v1.2.3-70-g09d2 From 27c915a4d843b90eb4065298969578d15e5e6ab0 Mon Sep 17 00:00:00 2001 From: Dhananjay Phadke Date: Wed, 14 Jan 2009 20:49:00 -0800 Subject: netxen: firmware init fix o Fix order or rom register writes. o Reduce udelays when writing rom registers. This cuts the firmware init time by 40%. o Do not reset core/memory clocks when reinitializing driver. Firmware willl handle this when initialized. Signed-off-by: Dhananjay Phadke Signed-off-by: David S. Miller --- drivers/net/netxen/netxen_nic_hw.c | 6 ++--- drivers/net/netxen/netxen_nic_init.c | 35 ++++++++++++++++----------- drivers/net/netxen/netxen_nic_main.c | 47 +++++++++++++++++++++--------------- 3 files changed, 51 insertions(+), 37 deletions(-) (limited to 'drivers/net/netxen/netxen_nic_init.c') diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c index 4276f7f8223..511db2ac57c 100644 --- a/drivers/net/netxen/netxen_nic_hw.c +++ b/drivers/net/netxen/netxen_nic_hw.c @@ -939,7 +939,7 @@ int netxen_load_firmware(struct netxen_adapter *adapter) { int i; u32 data, size = 0; - u32 flashaddr = NETXEN_BOOTLD_START, memaddr = NETXEN_BOOTLD_START; + u32 flashaddr = NETXEN_BOOTLD_START; size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START)/4; @@ -951,10 +951,8 @@ int netxen_load_firmware(struct netxen_adapter *adapter) if (netxen_rom_fast_read(adapter, flashaddr, (int *)&data) != 0) return -EIO; - adapter->pci_mem_write(adapter, memaddr, &data, 4); + adapter->pci_mem_write(adapter, flashaddr, &data, 4); flashaddr += 4; - memaddr += 4; - cond_resched(); } msleep(1); diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c index c0e06a65317..a3203644b48 100644 --- a/drivers/net/netxen/netxen_nic_init.c +++ b/drivers/net/netxen/netxen_nic_init.c @@ -439,6 +439,8 @@ static int netxen_wait_rom_done(struct netxen_adapter *adapter) long timeout = 0; long done = 0; + cond_resched(); + while (done == 0) { done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS); done &= 2; @@ -533,12 +535,9 @@ static int do_rom_fast_write(struct netxen_adapter *adapter, int addr, static int do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp) { - cond_resched(); - netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr); - netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3); - udelay(100); /* prevent bursting on CRB */ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0); + netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3); netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb); if (netxen_wait_rom_done(adapter)) { printk("Error waiting for rom done\n"); @@ -546,7 +545,7 @@ static int do_rom_fast_read(struct netxen_adapter *adapter, } /* reset abyte_cnt and dummy_byte_cnt */ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0); - udelay(100); /* prevent bursting on CRB */ + udelay(10); netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0); *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA); @@ -884,14 +883,16 @@ int netxen_flash_unlock(struct netxen_adapter *adapter) int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose) { int addr, val; - int i, init_delay = 0; + int i, n, init_delay = 0; struct crb_addr_pair *buf; - unsigned offset, n; + unsigned offset; u32 off; /* resetall */ + rom_lock(adapter); netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff); + netxen_rom_unlock(adapter); if (verbose) { if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0) @@ -910,7 +911,7 @@ int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose) if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { if (netxen_rom_fast_read(adapter, 0, &n) != 0 || - (n != 0xcafecafeUL) || + (n != 0xcafecafe) || netxen_rom_fast_read(adapter, 4, &n) != 0) { printk(KERN_ERR "%s: ERROR Reading crb_init area: " "n: %08x\n", netxen_nic_driver_name, n); @@ -975,6 +976,14 @@ int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose) /* do not reset PCI */ if (off == (ROMUSB_GLB + 0xbc)) continue; + if (off == (ROMUSB_GLB + 0xa8)) + continue; + if (off == (ROMUSB_GLB + 0xc8)) /* core clock */ + continue; + if (off == (ROMUSB_GLB + 0x24)) /* MN clock */ + continue; + if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */ + continue; if (off == (NETXEN_CRB_PEG_NET_1 + 0x18)) buf[i].data = 0x1020; /* skip the function enable register */ @@ -992,23 +1001,21 @@ int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose) continue; } + init_delay = 1; /* After writing this register, HW needs time for CRB */ /* to quiet down (else crb_window returns 0xffffffff) */ if (off == NETXEN_ROMUSB_GLB_SW_RESET) { - init_delay = 1; + init_delay = 1000; if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { /* hold xdma in reset also */ buf[i].data = NETXEN_NIC_XDMA_RESET; + buf[i].data = 0x8000ff; } } adapter->hw_write_wx(adapter, off, &buf[i].data, 4); - if (init_delay == 1) { - msleep(1000); - init_delay = 0; - } - msleep(1); + msleep(init_delay); } kfree(buf); diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index 2c6ce6ffde0..cbe2b3e814d 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -280,10 +280,15 @@ static void netxen_check_options(struct netxen_adapter *adapter) static int netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot) { - int ret = 0; + u32 val, timeout; if (first_boot == 0x55555555) { /* This is the first boot after power up */ + adapter->pci_write_normalize(adapter, + NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC); + + if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) + return 0; /* PCI bus master workaround */ adapter->hw_read_wx(adapter, @@ -303,18 +308,26 @@ netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot) /* clear the register for future unloads/loads */ adapter->pci_write_normalize(adapter, NETXEN_CAM_RAM(0x1fc), 0); - ret = -1; + return -EIO; } - if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { - /* Start P2 boot loader */ - adapter->pci_write_normalize(adapter, - NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC); - adapter->pci_write_normalize(adapter, - NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1); - } + /* Start P2 boot loader */ + val = adapter->pci_read_normalize(adapter, + NETXEN_ROMUSB_GLB_PEGTUNE_DONE); + adapter->pci_write_normalize(adapter, + NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1); + timeout = 0; + do { + msleep(1); + val = adapter->pci_read_normalize(adapter, + NETXEN_CAM_RAM(0x1fc)); + + if (++timeout > 5000) + return -EIO; + + } while (val == NETXEN_BDINFO_MAGIC); } - return ret; + return 0; } static void netxen_set_port_mode(struct netxen_adapter *adapter) @@ -793,8 +806,8 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) CRB_CMDPEG_STATE, 0); netxen_pinit_from_rom(adapter, 0); msleep(1); - netxen_load_firmware(adapter); } + netxen_load_firmware(adapter); if (NX_IS_REVISION_P3(revision_id)) netxen_pcie_strap_init(adapter); @@ -810,13 +823,6 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } - if ((first_boot == 0x55555555) && - (NX_IS_REVISION_P2(revision_id))) { - /* Unlock the HW, prompting the boot sequence */ - adapter->pci_write_normalize(adapter, - NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1); - } - err = netxen_initialize_adapter_offload(adapter); if (err) goto err_out_iounmap; @@ -830,7 +836,9 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i); /* Handshake with the card before we register the devices. */ - netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); + err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); + if (err) + goto err_out_free_offload; } /* first_driver */ @@ -934,6 +942,7 @@ err_out_disable_msi: if (adapter->flags & NETXEN_NIC_MSI_ENABLED) pci_disable_msi(pdev); +err_out_free_offload: if (first_driver) netxen_free_adapter_offload(adapter); -- cgit v1.2.3-70-g09d2 From 6f70340698333f14b1d9c9e913c5de8f66b72c55 Mon Sep 17 00:00:00 2001 From: Dhananjay Phadke Date: Wed, 14 Jan 2009 20:50:00 -0800 Subject: netxen: handle dma mapping failures o Bail out if pci_map_single() fails while replenishing rx ring. o Drop packet if pci_map_{single,page}() fail in tx. Signed-off-by: Dhananjay Phadke Signed-off-by: David S. Miller --- drivers/net/netxen/netxen_nic.h | 1 - drivers/net/netxen/netxen_nic_init.c | 68 +++++++++++++++++------------------- drivers/net/netxen/netxen_nic_main.c | 38 ++++++++++++++++++-- 3 files changed, 67 insertions(+), 40 deletions(-) (limited to 'drivers/net/netxen/netxen_nic_init.c') diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h index 6598a34b87d..c11c568fd7d 100644 --- a/drivers/net/netxen/netxen_nic.h +++ b/drivers/net/netxen/netxen_nic.h @@ -860,7 +860,6 @@ struct nx_host_rds_ring { u32 skb_size; struct netxen_rx_buffer *rx_buf_arr; /* rx buffers for receive */ struct list_head free_list; - int begin_alloc; }; /* diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c index a3203644b48..ca7c8d8050c 100644 --- a/drivers/net/netxen/netxen_nic_init.c +++ b/drivers/net/netxen/netxen_nic_init.c @@ -308,7 +308,6 @@ int netxen_alloc_sw_resources(struct netxen_adapter *adapter) } memset(rds_ring->rx_buf_arr, 0, RCV_BUFFSIZE); INIT_LIST_HEAD(&rds_ring->free_list); - rds_ring->begin_alloc = 0; /* * Now go through all of them, set reference handles * and put them in the queues. @@ -1435,7 +1434,6 @@ void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32 ringid) struct rcv_desc *pdesc; struct netxen_rx_buffer *buffer; int count = 0; - int index = 0; netxen_ctx_msg msg = 0; dma_addr_t dma; struct list_head *head; @@ -1443,7 +1441,6 @@ void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32 ringid) rds_ring = &recv_ctx->rds_rings[ringid]; producer = rds_ring->producer; - index = rds_ring->begin_alloc; head = &rds_ring->free_list; /* We can start writing rx descriptors into the phantom memory. */ @@ -1451,39 +1448,37 @@ void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32 ringid) skb = dev_alloc_skb(rds_ring->skb_size); if (unlikely(!skb)) { - rds_ring->begin_alloc = index; break; } + if (!adapter->ahw.cut_through) + skb_reserve(skb, 2); + + dma = pci_map_single(pdev, skb->data, + rds_ring->dma_size, PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(pdev, dma)) { + dev_kfree_skb_any(skb); + break; + } + + count++; buffer = list_entry(head->next, struct netxen_rx_buffer, list); list_del(&buffer->list); - count++; /* now there should be no failure */ - pdesc = &rds_ring->desc_head[producer]; - - if (!adapter->ahw.cut_through) - skb_reserve(skb, 2); - /* This will be setup when we receive the - * buffer after it has been filled FSL TBD TBD - * skb->dev = netdev; - */ - dma = pci_map_single(pdev, skb->data, rds_ring->dma_size, - PCI_DMA_FROMDEVICE); - pdesc->addr_buffer = cpu_to_le64(dma); buffer->skb = skb; buffer->state = NETXEN_BUFFER_BUSY; buffer->dma = dma; + /* make a rcv descriptor */ + pdesc = &rds_ring->desc_head[producer]; + pdesc->addr_buffer = cpu_to_le64(dma); pdesc->reference_handle = cpu_to_le16(buffer->ref_handle); pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); - DPRINTK(INFO, "done writing descripter\n"); - producer = - get_next_index(producer, rds_ring->max_rx_desc_count); - index = get_next_index(index, rds_ring->max_rx_desc_count); + + producer = get_next_index(producer, rds_ring->max_rx_desc_count); } /* if we did allocate buffers, then write the count to Phantom */ if (count) { - rds_ring->begin_alloc = index; rds_ring->producer = producer; /* Window = 1 */ adapter->pci_write_normalize(adapter, @@ -1522,49 +1517,50 @@ static void netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter, struct rcv_desc *pdesc; struct netxen_rx_buffer *buffer; int count = 0; - int index = 0; struct list_head *head; + dma_addr_t dma; rds_ring = &recv_ctx->rds_rings[ringid]; producer = rds_ring->producer; - index = rds_ring->begin_alloc; head = &rds_ring->free_list; /* We can start writing rx descriptors into the phantom memory. */ while (!list_empty(head)) { skb = dev_alloc_skb(rds_ring->skb_size); if (unlikely(!skb)) { - rds_ring->begin_alloc = index; break; } + if (!adapter->ahw.cut_through) + skb_reserve(skb, 2); + + dma = pci_map_single(pdev, skb->data, + rds_ring->dma_size, PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(pdev, dma)) { + dev_kfree_skb_any(skb); + break; + } + + count++; buffer = list_entry(head->next, struct netxen_rx_buffer, list); list_del(&buffer->list); - count++; /* now there should be no failure */ - pdesc = &rds_ring->desc_head[producer]; - if (!adapter->ahw.cut_through) - skb_reserve(skb, 2); buffer->skb = skb; buffer->state = NETXEN_BUFFER_BUSY; - buffer->dma = pci_map_single(pdev, skb->data, - rds_ring->dma_size, - PCI_DMA_FROMDEVICE); + buffer->dma = dma; /* make a rcv descriptor */ + pdesc = &rds_ring->desc_head[producer]; pdesc->reference_handle = cpu_to_le16(buffer->ref_handle); pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); pdesc->addr_buffer = cpu_to_le64(buffer->dma); - producer = - get_next_index(producer, rds_ring->max_rx_desc_count); - index = get_next_index(index, rds_ring->max_rx_desc_count); - buffer = &rds_ring->rx_buf_arr[index]; + + producer = get_next_index(producer, rds_ring->max_rx_desc_count); } /* if we did allocate buffers, then write the count to Phantom */ if (count) { - rds_ring->begin_alloc = index; rds_ring->producer = producer; /* Window = 1 */ adapter->pci_write_normalize(adapter, diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index 9268fd2fbac..86867405a36 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -1200,6 +1200,24 @@ static bool netxen_tso_check(struct net_device *netdev, return tso; } +static void +netxen_clean_tx_dma_mapping(struct pci_dev *pdev, + struct netxen_cmd_buffer *pbuf, int last) +{ + int k; + struct netxen_skb_frag *buffrag; + + buffrag = &pbuf->frag_array[0]; + pci_unmap_single(pdev, buffrag->dma, + buffrag->length, PCI_DMA_TODEVICE); + + for (k = 1; k < last; k++) { + buffrag = &pbuf->frag_array[k]; + pci_unmap_page(pdev, buffrag->dma, + buffrag->length, PCI_DMA_TODEVICE); + } +} + static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); @@ -1208,6 +1226,8 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) struct netxen_cmd_buffer *pbuf; struct netxen_skb_frag *buffrag; struct cmd_desc_type0 *hwdesc; + struct pci_dev *pdev = adapter->pdev; + dma_addr_t temp_dma; int i, k; u32 producer, consumer; @@ -1240,8 +1260,12 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) pbuf->skb = skb; pbuf->frag_count = frag_count; buffrag = &pbuf->frag_array[0]; - buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, + temp_dma = pci_map_single(pdev, skb->data, first_seg_len, PCI_DMA_TODEVICE); + if (pci_dma_mapping_error(pdev, temp_dma)) + goto drop_packet; + + buffrag->dma = temp_dma; buffrag->length = first_seg_len; netxen_set_tx_frags_len(hwdesc, frag_count, skb->len); netxen_set_tx_port(hwdesc, adapter->portnum); @@ -1253,7 +1277,6 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) struct skb_frag_struct *frag; int len, temp_len; unsigned long offset; - dma_addr_t temp_dma; /* move to next desc. if there is a need */ if ((i & 0x3) == 0) { @@ -1269,8 +1292,12 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) offset = frag->page_offset; temp_len = len; - temp_dma = pci_map_page(adapter->pdev, frag->page, offset, + temp_dma = pci_map_page(pdev, frag->page, offset, len, PCI_DMA_TODEVICE); + if (pci_dma_mapping_error(pdev, temp_dma)) { + netxen_clean_tx_dma_mapping(pdev, pbuf, i); + goto drop_packet; + } buffrag++; buffrag->dma = temp_dma; @@ -1345,6 +1372,11 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) netdev->trans_start = jiffies; return NETDEV_TX_OK; + +drop_packet: + adapter->stats.txdropped++; + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; } static int netxen_nic_check_temp(struct netxen_adapter *adapter) -- cgit v1.2.3-70-g09d2