/* * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved. * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "nes.h" #include #include #include #include MODULE_AUTHOR("NetEffect"); MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(DRV_VERSION); int max_mtu = 9000; int interrupt_mod_interval = 0; /* Interoperability */ int mpa_version = 1; module_param(mpa_version, int, 0); MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)"); /* Interoperability */ int disable_mpa_crc = 0; module_param(disable_mpa_crc, int, 0); MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC"); unsigned int send_first = 0; module_param(send_first, int, 0); MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection"); unsigned int nes_drv_opt = 0; module_param(nes_drv_opt, int, 0); MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters"); unsigned int nes_debug_level = 0; module_param_named(debug_level, nes_debug_level, uint, 0644); MODULE_PARM_DESC(debug_level, "Enable debug output level"); LIST_HEAD(nes_adapter_list); static LIST_HEAD(nes_dev_list); atomic_t qps_destroyed; static unsigned int ee_flsh_adapter; static unsigned int sysfs_nonidx_addr; static unsigned int sysfs_idx_addr; static struct pci_device_id nes_pci_table[] = { {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID}, {0} }; MODULE_DEVICE_TABLE(pci, nes_pci_table); static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *); static int nes_net_event(struct notifier_block *, unsigned long, void *); static int nes_notifiers_registered; static struct notifier_block nes_inetaddr_notifier = { .notifier_call = nes_inetaddr_event }; static struct notifier_block nes_net_notifier = { .notifier_call = nes_net_event }; /** * nes_inetaddr_event */ static int nes_inetaddr_event(struct notifier_block *notifier, unsigned long event, void *ptr) { struct in_ifaddr *ifa = ptr; struct net_device *event_netdev = ifa->ifa_dev->dev; struct nes_device *nesdev; struct net_device *netdev; struct nes_vnic *nesvnic; unsigned int addr; unsigned int mask; addr = ntohl(ifa->ifa_address); mask = ntohl(ifa->ifa_mask); nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address " NIPQUAD_FMT ", netmask " NIPQUAD_FMT ".\n", HIPQUAD(addr), HIPQUAD(mask)); list_for_each_entry(nesdev, &nes_dev_list, list) { nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n", nesdev, nesdev->netdev[0]->name); netdev = nesdev->netdev[0]; nesvnic = netdev_priv(netdev); if (netdev == event_netdev) { if (nesvnic->rdma_enabled == 0) { nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since" " RDMA is not enabled.\n", netdev->name); return NOTIFY_OK; } /* we have ifa->ifa_address/mask here if we need it */ switch (event) { case NETDEV_DOWN: nes_debug(NES_DBG_NETDEV, "event:DOWN\n"); nes_write_indexed(nesdev, NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0); nes_manage_arp_cache(netdev, netdev->dev_addr, ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE); nesvnic->local_ipaddr = 0; return NOTIFY_OK; break; case NETDEV_UP: nes_debug(NES_DBG_NETDEV, "event:UP\n"); if (nesvnic->local_ipaddr != 0) { nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n"); return NOTIFY_OK; } /* Add the address to the IP table */ nesvnic->local_ipaddr = ifa->ifa_address; nes_write_indexed(nesdev, NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), ntohl(ifa->ifa_address)); nes_manage_arp_cache(netdev, netdev->dev_addr, ntohl(nesvnic->local_ipaddr), NES_ARP_ADD); return NOTIFY_OK; break; default: break; } } } return NOTIFY_DONE; } /** * nes_net_event */ static int nes_net_event(struct notifier_block *notifier, unsigned long event, void *ptr) { struct neighbour *neigh = ptr; struct nes_device *nesdev; struct net_device *netdev; struct nes_vnic *nesvnic; switch (event) { case NETEVENT_NEIGH_UPDATE: list_for_each_entry(nesdev, &nes_dev_list, list) { /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */ netdev = nesdev->netdev[0]; nesvnic = netdev_priv(netdev); if (netdev == neigh->dev) { if (nesvnic->rdma_enabled == 0) { nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n", netdev->name); } else { if (neigh->nud_state & NUD_VALID) { nes_manage_arp_cache(neigh->dev, neigh->ha, ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD); } else { nes_manage_arp_cache(neigh->dev, neigh->ha, ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE); } } return NOTIFY_OK; } } break; default: nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event); break; } return NOTIFY_DONE; } /** * nes_add_ref */ void nes_add_ref(struct ib_qp *ibqp) { struct nes_qp *nesqp; nesqp = to_nesqp(ibqp); nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n", ibqp->qp_num, atomic_read(&nesqp->refcount)); atomic_inc(&nesqp->refcount); } static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request) { unsigned long flags; struct nes_qp *nesqp = cqp_request->cqp_callback_pointer; struct nes_adapter *nesadapter = nesdev->nesadapter; u32 qp_id; atomic_inc(&qps_destroyed); /* Free the control structures */ qp_id = nesqp->hwqp.qp_id; if (nesqp->pbl_vbase) { pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase); spin_lock_irqsave(&nesadapter->pbl_lock, flags); nesadapter->free_256pbl++; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase); nesqp->pbl_vbase = NULL; } else { pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); } nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id); nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL; kfree(nesqp->allocated_buffer); } /** * nes_rem_ref */ void nes_rem_ref(struct ib_qp *ibqp) { u64 u64temp; struct nes_qp *nesqp; struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); struct nes_device *nesdev = nesvnic->nesdev; struct nes_hw_cqp_wqe *cqp_wqe; struct nes_cqp_request *cqp_request; u32 opcode; nesqp = to_nesqp(ibqp); if (atomic_read(&nesqp->refcount) == 0) { printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n", __func__, ibqp->qp_num, nesqp->last_aeq); BUG(); } if (atomic_dec_and_test(&nesqp->refcount)) { /* Destroy the QP */ cqp_request = nes_get_cqp_request(nesdev); if (cqp_request == NULL) { nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n"); return; } cqp_request->waiting = 0; cqp_request->callback = 1; cqp_request->cqp_callback = nes_cqp_rem_ref_callback; cqp_request->cqp_callback_pointer = nesqp; cqp_wqe = &cqp_request->cqp_wqe; nes_fill_init_cqp_wqe(cqp_wqe, nesdev); opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP; if (nesqp->hte_added) { opcode |= NES_CQP_QP_DEL_HTE; nesqp->hte_added = 0; } set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); u64temp = (u64)nesqp->nesqp_context_pbase; set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp); nes_post_cqp_request(nesdev, cqp_request); } } /** * nes_get_qp */ struct ib_qp *nes_get_qp(struct ib_device *device, int qpn) { struct nes_vnic *nesvnic = to_nesvnic(device); struct nes_device *nesdev = nesvnic->nesdev; struct nes_adapter *nesadapter = nesdev->nesadapter; if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp))) return NULL; return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp; } /** * nes_print_macaddr */ static void nes_print_macaddr(struct net_device *netdev) { DECLARE_MAC_BUF(mac); nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n", netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq); } /** * nes_interrupt - handle interrupts */ static irqreturn_t nes_interrupt(int irq, void *dev_id) { struct nes_device *nesdev = (struct nes_device *)dev_id; int handled = 0; u32 int_mask; u32 int_req; u32 int_stat; u32 intf_int_stat; u32 timer_stat; if (nesdev->msi_enabled) { /* No need to read the interrupt pending register if msi is enabled */ handled = 1; } else { if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) { /* Master interrupt enable provides synchronization for kicking off bottom half when interrupt sharing is going on */ int_mask = nes_read32(nesdev->regs + NES_INT_MASK); if (int_mask & 0x80000000) { /* Check interrupt status to see if this might be ours */ int_stat = nes_read32(nesdev->regs + NES_INT_STAT); int_req = nesdev->int_req; if (int_stat&int_req) { /* if interesting CEQ or AEQ is pending, claim the interrupt */ if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) { handled = 1; } else { if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) { /* Timer might be running but might be for another function */ timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT); if ((timer_stat & nesdev->timer_int_req) != 0) { handled = 1; } } if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) && (handled == 0)) { intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT); if ((intf_int_stat & nesdev->intf_int_req) != 0) { handled = 1; } } } if (handled) { nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000)); int_mask = nes_read32(nesdev->regs+NES_INT_MASK); /* Save off the status to save an additional read */ nesdev->int_stat = int_stat; nesdev->napi_isr_ran = 1; } } } } else { handled = nes_read32(nesdev->regs+NES_INT_PENDING); } } if (handled) { if (nes_napi_isr(nesdev) == 0) { tasklet_schedule(&nesdev->dpc_tasklet); } return IRQ_HANDLED; } else { return IRQ_NONE; } } /** * nes_probe - Device initialization */ static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent) { struct net_device *netdev = NULL; struct nes_device *nesdev = NULL; int ret = 0; struct nes_vnic *nesvnic = NULL; void __iomem *mmio_regs = NULL; u8 hw_rev; assert(pcidev != NULL); assert(ent != NULL); printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n", DRV_VERSION, pci_name(pcidev)); ret = pci_enable_device(pcidev); if (ret) { printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev)); goto bail0; } nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n", (long unsigned int)pci_resource_start(pcidev, BAR_0), (long unsigned int)pci_resource_len(pcidev, BAR_0)); nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n", (long unsigned int)pci_resource_start(pcidev, BAR_1), (long unsigned int)pci_resource_len(pcidev, BAR_1)); /* Make sure PCI base addr are MMIO */ if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) || !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) { printk(KERN_ERR PFX "PCI regions not an MMIO resource\n"); ret = -ENODEV; goto bail1; } /* Reserve PCI I/O and memory resources */ ret = pci_request_regions(pcidev, DRV_NAME); if (ret) { printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev)); goto bail1; } if ((sizeof(dma_addr_t) > 4)) { ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK); if (ret < 0) { printk(KERN_ERR PFX "64b DMA mask configuration failed\n"); goto bail2; } ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK); if (ret) { printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n"); goto bail2; } } else { ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK); if (ret < 0) { printk(KERN_ERR PFX "32b DMA mask configuration failed\n"); goto bail2; } ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK); if (ret) { printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n"); goto bail2; } } pci_set_master(pcidev); /* Allocate hardware structure */ nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL); if (!nesdev) { printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev)); ret = -ENOMEM; goto bail2; } nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev); nesdev->pcidev = pcidev; pci_set_drvdata(pcidev, nesdev); pci_read_config_byte(pcidev, 0x0008, &hw_rev); nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev); spin_lock_init(&nesdev->indexed_regs_lock); /* Remap the PCI registers in adapter BAR0 to kernel VA space */ mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs)); if (mmio_regs == NULL) { printk(KERN_ERR PFX "Unable to remap BAR0\n"); ret = -EIO; goto bail3; } nesdev->regs = mmio_regs; nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs; /* Ensure interrupts are disabled */ nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff); if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) { if (!pci_enable_msi(nesdev->pcidev)) { nesdev->msi_enabled = 1; nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n", pci_name(pcidev)); } else { nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n", pci_name(pcidev)); } } else { nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n", pci_name(pcidev)); } nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0); nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1); /* Init the adapter */ nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev); if (!nesdev->nesadapter) { printk(KERN_ERR PFX "Unable to initialize adapter.\n"); ret = -ENOMEM; goto bail5; } nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval; /* nesdev->base_doorbell_index = nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */ nesdev->base_doorbell_index = 1; nesdev->doorbell_start = nesdev->nesadapter->doorbell_start; if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) { switch (PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count) { case 1: nesdev->mac_index = 2; break; case 2: nesdev->mac_index = 1; break; case 3: nesdev->mac_index = 3; break; case 0: default: nesdev->mac_index = 0; } } else { nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count; } tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev); /* bring up the Control QP */ if (nes_init_cqp(nesdev)) { ret = -ENODEV; goto bail6; } /* Arm the CCQ */ nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT | PCI_FUNC(nesdev->pcidev->devfn)); nes_read32(nesdev->regs+NES_CQE_ALLOC); /* Enable the interrupts */ nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) | (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16)); if (PCI_FUNC(nesdev->pcidev->devfn) < 4) { nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24)); } /* TODO: This really should be the first driver to load, not function 0 */ if (PCI_FUNC(nesdev->pcidev->devfn) == 0) { /* pick up PCI and critical errors if the first driver to load */ nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR; nesdev->int_req |= NES_INT_INTF; } else { nesdev->intf_int_req = 0; } nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16)); nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0); nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0); nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265); nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804); nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790); /* deal with both periodic and one_shot */ nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn); nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req; nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n", PCI_FUNC(nesdev->pcidev->devfn), nesdev->timer_int_req, nesdev->nesadapter->timer_int_req); nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req)); list_add_tail(&nesdev->list, &nes_dev_list); /* Request an interrupt line for the driver */ ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev); if (ret) { printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n", pci_name(pcidev), pcidev->irq); goto bail65; } nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req); if (nes_notifiers_registered == 0) { register_inetaddr_notifier(&nes_inetaddr_notifier); register_netevent_notifier(&nes_net_notifier); } nes_notifiers_registered++; /* Initialize network devices */ if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) { goto bail7; } /* Register network device */ ret = register_netdev(netdev); if (ret) { printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret); nes_netdev_destroy(netdev); goto bail7; } nes_print_macaddr(netdev); /* create a CM core for this netdev */ nesvnic = netdev_priv(netdev); nesdev->netdev_count++; nesdev->nesadapter->netdev_count++; printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n", pci_name(pcidev)); return 0; bail7: printk(KERN_ERR PFX "bail7\n"); while (nesdev->netdev_count > 0) { nesdev->netdev_count--; nesdev->nesadapter->netdev_count--; unregister_netdev(nesdev->netdev[nesdev->netdev_count]); nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]); } nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n", nesdev->netdev_count, nesdev->nesadapter->netdev_count); nes_notifiers_registered--; if (nes_notifiers_registered == 0) { unregister_netevent_notifier(&nes_net_notifier); unregister_inetaddr_notifier(&nes_inetaddr_notifier); } list_del(&nesdev->list); nes_destroy_cqp(nesdev); bail65: printk(KERN_ERR PFX "bail65\n"); free_irq(pcidev->irq, nesdev); if (nesdev->msi_enabled) { pci_disable_msi(pcidev); } bail6: printk(KERN_ERR PFX "bail6\n"); tasklet_kill(&nesdev->dpc_tasklet); /* Deallocate the Adapter Structure */ nes_destroy_adapter(nesdev->nesadapter); bail5: printk(KERN_ERR PFX "bail5\n"); iounmap(nesdev->regs); bail3: printk(KERN_ERR PFX "bail3\n"); kfree(nesdev); bail2: pci_release_regions(pcidev); bail1: pci_disable_device(pcidev); bail0: return ret; } /** * nes_remove - unload from kernel */ static void __devexit nes_remove(struct pci_dev *pcidev) { struct nes_device *nesdev = pci_get_drvdata(pcidev); struct net_device *netdev; int netdev_index = 0; if (nesdev->netdev_count) { netdev = nesdev->netdev[netdev_index]; if (netdev) { netif_stop_queue(netdev); unregister_netdev(netdev); nes_netdev_destroy(netdev); nesdev->netdev[netdev_index] = NULL; nesdev->netdev_count--; nesdev->nesadapter->netdev_count--; } } nes_notifiers_registered--; if (nes_notifiers_registered == 0) { unregister_netevent_notifier(&nes_net_notifier); unregister_inetaddr_notifier(&nes_inetaddr_notifier); } list_del(&nesdev->list); nes_destroy_cqp(nesdev); free_irq(pcidev->irq, nesdev); tasklet_kill(&nesdev->dpc_tasklet); /* Deallocate the Adapter Structure */ nes_destroy_adapter(nesdev->nesadapter); if (nesdev->msi_enabled) { pci_disable_msi(pcidev); } iounmap(nesdev->regs); kfree(nesdev); /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */ pci_release_regions(pcidev); pci_disable_device(pcidev); pci_set_drvdata(pcidev, NULL); } static struct pci_driver nes_pci_driver = { .name = DRV_NAME, .id_table = nes_pci_table, .probe = nes_probe, .remove = __devexit_p(nes_remove), }; static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf) { unsigned int devfn = 0xffffffff; unsigned char bus_number = 0xff; unsigned int i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { devfn = nesdev->pcidev->devfn; bus_number = nesdev->pcidev->bus->number; break; } i++; } return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn); } static ssize_t nes_store_adapter(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; ee_flsh_adapter = simple_strtoul(p, &p, 10); return strnlen(buf, count); } static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf) { u32 eeprom_cmd = 0xdead; u32 i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND); break; } i++; } return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd); } static ssize_t nes_store_ee_cmd(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; u32 val; u32 i = 0; struct nes_device *nesdev; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { val = simple_strtoul(p, &p, 16); list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val); break; } i++; } } return strnlen(buf, count); } static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf) { u32 eeprom_data = 0xdead; u32 i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA); break; } i++; } return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data); } static ssize_t nes_store_ee_data(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; u32 val; u32 i = 0; struct nes_device *nesdev; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { val = simple_strtoul(p, &p, 16); list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nes_write32(nesdev->regs + NES_EEPROM_DATA, val); break; } i++; } } return strnlen(buf, count); } static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf) { u32 flash_cmd = 0xdead; u32 i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND); break; } i++; } return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd); } static ssize_t nes_store_flash_cmd(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; u32 val; u32 i = 0; struct nes_device *nesdev; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { val = simple_strtoul(p, &p, 16); list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nes_write32(nesdev->regs + NES_FLASH_COMMAND, val); break; } i++; } } return strnlen(buf, count); } static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf) { u32 flash_data = 0xdead; u32 i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA); break; } i++; } return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data); } static ssize_t nes_store_flash_data(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; u32 val; u32 i = 0; struct nes_device *nesdev; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { val = simple_strtoul(p, &p, 16); list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nes_write32(nesdev->regs + NES_FLASH_DATA, val); break; } i++; } } return strnlen(buf, count); } static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr); } static ssize_t nes_store_nonidx_addr(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') sysfs_nonidx_addr = simple_strtoul(p, &p, 16); return strnlen(buf, count); } static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf) { u32 nonidx_data = 0xdead; u32 i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr); break; } i++; } return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data); } static ssize_t nes_store_nonidx_data(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; u32 val; u32 i = 0; struct nes_device *nesdev; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { val = simple_strtoul(p, &p, 16); list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nes_write32(nesdev->regs + sysfs_nonidx_addr, val); break; } i++; } } return strnlen(buf, count); } static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr); } static ssize_t nes_store_idx_addr(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') sysfs_idx_addr = simple_strtoul(p, &p, 16); return strnlen(buf, count); } static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf) { u32 idx_data = 0xdead; u32 i = 0; struct nes_device *nesdev; list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { idx_data = nes_read_indexed(nesdev, sysfs_idx_addr); break; } i++; } return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data); } static ssize_t nes_store_idx_data(struct device_driver *ddp, const char *buf, size_t count) { char *p = (char *)buf; u32 val; u32 i = 0; struct nes_device *nesdev; if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { val = simple_strtoul(p, &p, 16); list_for_each_entry(nesdev, &nes_dev_list, list) { if (i == ee_flsh_adapter) { nes_write_indexed(nesdev, sysfs_idx_addr, val); break; } i++; } } return strnlen(buf, count); } static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR, nes_show_adapter, nes_store_adapter); static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR, nes_show_ee_cmd, nes_store_ee_cmd); static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR, nes_show_ee_data, nes_store_ee_data); static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR, nes_show_flash_cmd, nes_store_flash_cmd); static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR, nes_show_flash_data, nes_store_flash_data); static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR, nes_show_nonidx_addr, nes_store_nonidx_addr); static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR, nes_show_nonidx_data, nes_store_nonidx_data); static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR, nes_show_idx_addr, nes_store_idx_addr); static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR, nes_show_idx_data, nes_store_idx_data); static int nes_create_driver_sysfs(struct pci_driver *drv) { int error; error = driver_create_file(&drv->driver, &driver_attr_adapter); error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd); error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data); error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd); error |= driver_create_file(&drv->driver, &driver_attr_flash_data); error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr); error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data); error |= driver_create_file(&drv->driver, &driver_attr_idx_addr); error |= driver_create_file(&drv->driver, &driver_attr_idx_data); return error; } static void nes_remove_driver_sysfs(struct pci_driver *drv) { driver_remove_file(&drv->driver, &driver_attr_adapter); driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd); driver_remove_file(&drv->driver, &driver_attr_eeprom_data); driver_remove_file(&drv->driver, &driver_attr_flash_cmd); driver_remove_file(&drv->driver, &driver_attr_flash_data); driver_remove_file(&drv->driver, &driver_attr_nonidx_addr); driver_remove_file(&drv->driver, &driver_attr_nonidx_data); driver_remove_file(&drv->driver, &driver_attr_idx_addr); driver_remove_file(&drv->driver, &driver_attr_idx_data); } /** * nes_init_module - module initialization entry point */ static int __init nes_init_module(void) { int retval; int retval1; retval = nes_cm_start(); if (retval) { printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n"); return retval; } retval = pci_register_driver(&nes_pci_driver); if (retval >= 0) { retval1 = nes_create_driver_sysfs(&nes_pci_driver); if (retval1 < 0) printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n"); } return retval; } /** * nes_exit_module - module unload entry point */ static void __exit nes_exit_module(void) { nes_cm_stop(); nes_remove_driver_sysfs(&nes_pci_driver); pci_unregister_driver(&nes_pci_driver); } module_init(nes_init_module); module_exit(nes_exit_module);