| /* |
| * Copyright (c) 2009-2010 Chelsio, 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 <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/device.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/list.h> |
| #include <linux/spinlock.h> |
| #include <linux/ethtool.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/inetdevice.h> |
| #include <linux/io.h> |
| |
| #include <asm/irq.h> |
| #include <asm/byteorder.h> |
| |
| #include <rdma/iw_cm.h> |
| #include <rdma/ib_verbs.h> |
| #include <rdma/ib_smi.h> |
| #include <rdma/ib_umem.h> |
| #include <rdma/ib_user_verbs.h> |
| |
| #include "iw_cxgb4.h" |
| |
| static int fastreg_support; |
| module_param(fastreg_support, int, 0644); |
| MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=0)"); |
| |
| static int c4iw_modify_port(struct ib_device *ibdev, |
| u8 port, int port_modify_mask, |
| struct ib_port_modify *props) |
| { |
| return -ENOSYS; |
| } |
| |
| static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, |
| struct ib_ah_attr *ah_attr) |
| { |
| return ERR_PTR(-ENOSYS); |
| } |
| |
| static int c4iw_ah_destroy(struct ib_ah *ah) |
| { |
| return -ENOSYS; |
| } |
| |
| static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) |
| { |
| return -ENOSYS; |
| } |
| |
| static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) |
| { |
| return -ENOSYS; |
| } |
| |
| static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, |
| u8 port_num, struct ib_wc *in_wc, |
| struct ib_grh *in_grh, struct ib_mad *in_mad, |
| struct ib_mad *out_mad) |
| { |
| return -ENOSYS; |
| } |
| |
| static int c4iw_dealloc_ucontext(struct ib_ucontext *context) |
| { |
| struct c4iw_dev *rhp = to_c4iw_dev(context->device); |
| struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); |
| struct c4iw_mm_entry *mm, *tmp; |
| |
| PDBG("%s context %p\n", __func__, context); |
| list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) |
| kfree(mm); |
| c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); |
| kfree(ucontext); |
| return 0; |
| } |
| |
| static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, |
| struct ib_udata *udata) |
| { |
| struct c4iw_ucontext *context; |
| struct c4iw_dev *rhp = to_c4iw_dev(ibdev); |
| |
| PDBG("%s ibdev %p\n", __func__, ibdev); |
| context = kzalloc(sizeof(*context), GFP_KERNEL); |
| if (!context) |
| return ERR_PTR(-ENOMEM); |
| c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); |
| INIT_LIST_HEAD(&context->mmaps); |
| spin_lock_init(&context->mmap_lock); |
| return &context->ibucontext; |
| } |
| |
| static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) |
| { |
| int len = vma->vm_end - vma->vm_start; |
| u32 key = vma->vm_pgoff << PAGE_SHIFT; |
| struct c4iw_rdev *rdev; |
| int ret = 0; |
| struct c4iw_mm_entry *mm; |
| struct c4iw_ucontext *ucontext; |
| u64 addr; |
| |
| PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff, |
| key, len); |
| |
| if (vma->vm_start & (PAGE_SIZE-1)) |
| return -EINVAL; |
| |
| rdev = &(to_c4iw_dev(context->device)->rdev); |
| ucontext = to_c4iw_ucontext(context); |
| |
| mm = remove_mmap(ucontext, key, len); |
| if (!mm) |
| return -EINVAL; |
| addr = mm->addr; |
| kfree(mm); |
| |
| if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) && |
| (addr < (pci_resource_start(rdev->lldi.pdev, 2) + |
| pci_resource_len(rdev->lldi.pdev, 2)))) { |
| |
| /* |
| * Map T4 DB register. |
| */ |
| if (vma->vm_flags & VM_READ) |
| return -EPERM; |
| |
| vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
| vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; |
| vma->vm_flags &= ~VM_MAYREAD; |
| ret = io_remap_pfn_range(vma, vma->vm_start, |
| addr >> PAGE_SHIFT, |
| len, vma->vm_page_prot); |
| } else { |
| |
| /* |
| * Map WQ or CQ contig dma memory... |
| */ |
| ret = remap_pfn_range(vma, vma->vm_start, |
| addr >> PAGE_SHIFT, |
| len, vma->vm_page_prot); |
| } |
| |
| return ret; |
| } |
| |
| static int c4iw_deallocate_pd(struct ib_pd *pd) |
| { |
| struct c4iw_dev *rhp; |
| struct c4iw_pd *php; |
| |
| php = to_c4iw_pd(pd); |
| rhp = php->rhp; |
| PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid); |
| c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, php->pdid, |
| &rhp->rdev.resource.pdid_fifo_lock); |
| kfree(php); |
| return 0; |
| } |
| |
| static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev, |
| struct ib_ucontext *context, |
| struct ib_udata *udata) |
| { |
| struct c4iw_pd *php; |
| u32 pdid; |
| struct c4iw_dev *rhp; |
| |
| PDBG("%s ibdev %p\n", __func__, ibdev); |
| rhp = (struct c4iw_dev *) ibdev; |
| pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_fifo, |
| &rhp->rdev.resource.pdid_fifo_lock); |
| if (!pdid) |
| return ERR_PTR(-EINVAL); |
| php = kzalloc(sizeof(*php), GFP_KERNEL); |
| if (!php) { |
| c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, pdid, |
| &rhp->rdev.resource.pdid_fifo_lock); |
| return ERR_PTR(-ENOMEM); |
| } |
| php->pdid = pdid; |
| php->rhp = rhp; |
| if (context) { |
| if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { |
| c4iw_deallocate_pd(&php->ibpd); |
| return ERR_PTR(-EFAULT); |
| } |
| } |
| PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php); |
| return &php->ibpd; |
| } |
| |
| static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, |
| u16 *pkey) |
| { |
| PDBG("%s ibdev %p\n", __func__, ibdev); |
| *pkey = 0; |
| return 0; |
| } |
| |
| static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, |
| union ib_gid *gid) |
| { |
| struct c4iw_dev *dev; |
| |
| PDBG("%s ibdev %p, port %d, index %d, gid %p\n", |
| __func__, ibdev, port, index, gid); |
| dev = to_c4iw_dev(ibdev); |
| BUG_ON(port == 0); |
| memset(&(gid->raw[0]), 0, sizeof(gid->raw)); |
| memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6); |
| return 0; |
| } |
| |
| static int c4iw_query_device(struct ib_device *ibdev, |
| struct ib_device_attr *props) |
| { |
| |
| struct c4iw_dev *dev; |
| PDBG("%s ibdev %p\n", __func__, ibdev); |
| |
| dev = to_c4iw_dev(ibdev); |
| memset(props, 0, sizeof *props); |
| memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); |
| props->hw_ver = dev->rdev.lldi.adapter_type; |
| props->fw_ver = dev->rdev.lldi.fw_vers; |
| props->device_cap_flags = dev->device_cap_flags; |
| props->page_size_cap = T4_PAGESIZE_MASK; |
| props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor; |
| props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device; |
| props->max_mr_size = T4_MAX_MR_SIZE; |
| props->max_qp = T4_MAX_NUM_QP; |
| props->max_qp_wr = T4_MAX_QP_DEPTH; |
| props->max_sge = T4_MAX_RECV_SGE; |
| props->max_sge_rd = 1; |
| props->max_qp_rd_atom = c4iw_max_read_depth; |
| props->max_qp_init_rd_atom = c4iw_max_read_depth; |
| props->max_cq = T4_MAX_NUM_CQ; |
| props->max_cqe = T4_MAX_CQ_DEPTH; |
| props->max_mr = c4iw_num_stags(&dev->rdev); |
| props->max_pd = T4_MAX_NUM_PD; |
| props->local_ca_ack_delay = 0; |
| props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; |
| |
| return 0; |
| } |
| |
| static int c4iw_query_port(struct ib_device *ibdev, u8 port, |
| struct ib_port_attr *props) |
| { |
| struct c4iw_dev *dev; |
| struct net_device *netdev; |
| struct in_device *inetdev; |
| |
| PDBG("%s ibdev %p\n", __func__, ibdev); |
| |
| dev = to_c4iw_dev(ibdev); |
| netdev = dev->rdev.lldi.ports[port-1]; |
| |
| memset(props, 0, sizeof(struct ib_port_attr)); |
| props->max_mtu = IB_MTU_4096; |
| if (netdev->mtu >= 4096) |
| props->active_mtu = IB_MTU_4096; |
| else if (netdev->mtu >= 2048) |
| props->active_mtu = IB_MTU_2048; |
| else if (netdev->mtu >= 1024) |
| props->active_mtu = IB_MTU_1024; |
| else if (netdev->mtu >= 512) |
| props->active_mtu = IB_MTU_512; |
| else |
| props->active_mtu = IB_MTU_256; |
| |
| if (!netif_carrier_ok(netdev)) |
| props->state = IB_PORT_DOWN; |
| else { |
| inetdev = in_dev_get(netdev); |
| if (inetdev) { |
| if (inetdev->ifa_list) |
| props->state = IB_PORT_ACTIVE; |
| else |
| props->state = IB_PORT_INIT; |
| in_dev_put(inetdev); |
| } else |
| props->state = IB_PORT_INIT; |
| } |
| |
| props->port_cap_flags = |
| IB_PORT_CM_SUP | |
| IB_PORT_SNMP_TUNNEL_SUP | |
| IB_PORT_REINIT_SUP | |
| IB_PORT_DEVICE_MGMT_SUP | |
| IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; |
| props->gid_tbl_len = 1; |
| props->pkey_tbl_len = 1; |
| props->active_width = 2; |
| props->active_speed = 2; |
| props->max_msg_sz = -1; |
| |
| return 0; |
| } |
| |
| static ssize_t show_rev(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, |
| ibdev.dev); |
| PDBG("%s dev 0x%p\n", __func__, dev); |
| return sprintf(buf, "%d\n", c4iw_dev->rdev.lldi.adapter_type); |
| } |
| |
| static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, |
| ibdev.dev); |
| PDBG("%s dev 0x%p\n", __func__, dev); |
| |
| return sprintf(buf, "%u.%u.%u.%u\n", |
| FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers), |
| FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers), |
| FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers), |
| FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers)); |
| } |
| |
| static ssize_t show_hca(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, |
| ibdev.dev); |
| struct ethtool_drvinfo info; |
| struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0]; |
| |
| PDBG("%s dev 0x%p\n", __func__, dev); |
| lldev->ethtool_ops->get_drvinfo(lldev, &info); |
| return sprintf(buf, "%s\n", info.driver); |
| } |
| |
| static ssize_t show_board(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, |
| ibdev.dev); |
| PDBG("%s dev 0x%p\n", __func__, dev); |
| return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor, |
| c4iw_dev->rdev.lldi.pdev->device); |
| } |
| |
| static int c4iw_get_mib(struct ib_device *ibdev, |
| union rdma_protocol_stats *stats) |
| { |
| return -ENOSYS; |
| } |
| |
| static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); |
| static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); |
| static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); |
| static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); |
| |
| static struct device_attribute *c4iw_class_attributes[] = { |
| &dev_attr_hw_rev, |
| &dev_attr_fw_ver, |
| &dev_attr_hca_type, |
| &dev_attr_board_id, |
| }; |
| |
| int c4iw_register_device(struct c4iw_dev *dev) |
| { |
| int ret; |
| int i; |
| |
| PDBG("%s c4iw_dev %p\n", __func__, dev); |
| BUG_ON(!dev->rdev.lldi.ports[0]); |
| strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX); |
| memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); |
| memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); |
| dev->ibdev.owner = THIS_MODULE; |
| dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; |
| if (fastreg_support) |
| dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; |
| dev->ibdev.local_dma_lkey = 0; |
| dev->ibdev.uverbs_cmd_mask = |
| (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | |
| (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | |
| (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | |
| (1ull << IB_USER_VERBS_CMD_REG_MR) | |
| (1ull << IB_USER_VERBS_CMD_DEREG_MR) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | |
| (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_QP) | |
| (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | |
| (1ull << IB_USER_VERBS_CMD_POLL_CQ) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | |
| (1ull << IB_USER_VERBS_CMD_POST_SEND) | |
| (1ull << IB_USER_VERBS_CMD_POST_RECV); |
| dev->ibdev.node_type = RDMA_NODE_RNIC; |
| memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC)); |
| dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports; |
| dev->ibdev.num_comp_vectors = 1; |
| dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev); |
| dev->ibdev.query_device = c4iw_query_device; |
| dev->ibdev.query_port = c4iw_query_port; |
| dev->ibdev.modify_port = c4iw_modify_port; |
| dev->ibdev.query_pkey = c4iw_query_pkey; |
| dev->ibdev.query_gid = c4iw_query_gid; |
| dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext; |
| dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext; |
| dev->ibdev.mmap = c4iw_mmap; |
| dev->ibdev.alloc_pd = c4iw_allocate_pd; |
| dev->ibdev.dealloc_pd = c4iw_deallocate_pd; |
| dev->ibdev.create_ah = c4iw_ah_create; |
| dev->ibdev.destroy_ah = c4iw_ah_destroy; |
| dev->ibdev.create_qp = c4iw_create_qp; |
| dev->ibdev.modify_qp = c4iw_ib_modify_qp; |
| dev->ibdev.destroy_qp = c4iw_destroy_qp; |
| dev->ibdev.create_cq = c4iw_create_cq; |
| dev->ibdev.destroy_cq = c4iw_destroy_cq; |
| dev->ibdev.resize_cq = c4iw_resize_cq; |
| dev->ibdev.poll_cq = c4iw_poll_cq; |
| dev->ibdev.get_dma_mr = c4iw_get_dma_mr; |
| dev->ibdev.reg_phys_mr = c4iw_register_phys_mem; |
| dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem; |
| dev->ibdev.reg_user_mr = c4iw_reg_user_mr; |
| dev->ibdev.dereg_mr = c4iw_dereg_mr; |
| dev->ibdev.alloc_mw = c4iw_alloc_mw; |
| dev->ibdev.bind_mw = c4iw_bind_mw; |
| dev->ibdev.dealloc_mw = c4iw_dealloc_mw; |
| dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; |
| dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; |
| dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl; |
| dev->ibdev.attach_mcast = c4iw_multicast_attach; |
| dev->ibdev.detach_mcast = c4iw_multicast_detach; |
| dev->ibdev.process_mad = c4iw_process_mad; |
| dev->ibdev.req_notify_cq = c4iw_arm_cq; |
| dev->ibdev.post_send = c4iw_post_send; |
| dev->ibdev.post_recv = c4iw_post_receive; |
| dev->ibdev.get_protocol_stats = c4iw_get_mib; |
| |
| dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL); |
| if (!dev->ibdev.iwcm) |
| return -ENOMEM; |
| |
| dev->ibdev.iwcm->connect = c4iw_connect; |
| dev->ibdev.iwcm->accept = c4iw_accept_cr; |
| dev->ibdev.iwcm->reject = c4iw_reject_cr; |
| dev->ibdev.iwcm->create_listen = c4iw_create_listen; |
| dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen; |
| dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref; |
| dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref; |
| dev->ibdev.iwcm->get_qp = c4iw_get_qp; |
| |
| ret = ib_register_device(&dev->ibdev, NULL); |
| if (ret) |
| goto bail1; |
| |
| for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) { |
| ret = device_create_file(&dev->ibdev.dev, |
| c4iw_class_attributes[i]); |
| if (ret) |
| goto bail2; |
| } |
| return 0; |
| bail2: |
| ib_unregister_device(&dev->ibdev); |
| bail1: |
| kfree(dev->ibdev.iwcm); |
| return ret; |
| } |
| |
| void c4iw_unregister_device(struct c4iw_dev *dev) |
| { |
| int i; |
| |
| PDBG("%s c4iw_dev %p\n", __func__, dev); |
| for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) |
| device_remove_file(&dev->ibdev.dev, |
| c4iw_class_attributes[i]); |
| ib_unregister_device(&dev->ibdev); |
| kfree(dev->ibdev.iwcm); |
| return; |
| } |