531 lines
16 KiB
C
531 lines
16 KiB
C
/*
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* Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/ethtool.h>
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#include <linux/rtnetlink.h>
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#include <linux/inetdevice.h>
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#include <linux/io.h>
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#include <asm/irq.h>
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#include <asm/byteorder.h>
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#include <rdma/iw_cm.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_smi.h>
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#include <rdma/ib_umem.h>
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#include <rdma/ib_user_verbs.h>
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#include "iw_cxgb4.h"
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static int fastreg_support = 1;
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module_param(fastreg_support, int, 0644);
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MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)");
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static struct ib_ah *c4iw_ah_create(struct ib_pd *pd,
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struct ib_ah_attr *ah_attr)
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{
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return ERR_PTR(-ENOSYS);
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}
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static int c4iw_ah_destroy(struct ib_ah *ah)
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{
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return -ENOSYS;
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}
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static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
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{
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return -ENOSYS;
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}
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static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
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{
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return -ENOSYS;
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}
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static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags,
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u8 port_num, struct ib_wc *in_wc,
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struct ib_grh *in_grh, struct ib_mad *in_mad,
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struct ib_mad *out_mad)
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{
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return -ENOSYS;
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}
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static int c4iw_dealloc_ucontext(struct ib_ucontext *context)
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{
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struct c4iw_dev *rhp = to_c4iw_dev(context->device);
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struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
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struct c4iw_mm_entry *mm, *tmp;
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PDBG("%s context %p\n", __func__, context);
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list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
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kfree(mm);
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c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
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kfree(ucontext);
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return 0;
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}
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static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
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struct ib_udata *udata)
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{
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struct c4iw_ucontext *context;
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struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
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PDBG("%s ibdev %p\n", __func__, ibdev);
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context = kzalloc(sizeof(*context), GFP_KERNEL);
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if (!context)
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return ERR_PTR(-ENOMEM);
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c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
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INIT_LIST_HEAD(&context->mmaps);
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spin_lock_init(&context->mmap_lock);
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return &context->ibucontext;
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}
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static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
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{
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int len = vma->vm_end - vma->vm_start;
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u32 key = vma->vm_pgoff << PAGE_SHIFT;
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struct c4iw_rdev *rdev;
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int ret = 0;
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struct c4iw_mm_entry *mm;
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struct c4iw_ucontext *ucontext;
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u64 addr;
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PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
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key, len);
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if (vma->vm_start & (PAGE_SIZE-1))
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return -EINVAL;
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rdev = &(to_c4iw_dev(context->device)->rdev);
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ucontext = to_c4iw_ucontext(context);
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mm = remove_mmap(ucontext, key, len);
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if (!mm)
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return -EINVAL;
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addr = mm->addr;
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kfree(mm);
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if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
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(addr < (pci_resource_start(rdev->lldi.pdev, 0) +
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pci_resource_len(rdev->lldi.pdev, 0)))) {
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/*
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* MA_SYNC register...
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*/
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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ret = io_remap_pfn_range(vma, vma->vm_start,
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addr >> PAGE_SHIFT,
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len, vma->vm_page_prot);
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} else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
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(addr < (pci_resource_start(rdev->lldi.pdev, 2) +
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pci_resource_len(rdev->lldi.pdev, 2)))) {
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/*
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* Map user DB or OCQP memory...
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*/
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if (addr >= rdev->oc_mw_pa)
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vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
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else
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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ret = io_remap_pfn_range(vma, vma->vm_start,
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addr >> PAGE_SHIFT,
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len, vma->vm_page_prot);
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} else {
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/*
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* Map WQ or CQ contig dma memory...
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*/
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ret = remap_pfn_range(vma, vma->vm_start,
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addr >> PAGE_SHIFT,
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len, vma->vm_page_prot);
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}
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return ret;
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}
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static int c4iw_deallocate_pd(struct ib_pd *pd)
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{
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struct c4iw_dev *rhp;
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struct c4iw_pd *php;
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php = to_c4iw_pd(pd);
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rhp = php->rhp;
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PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
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c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, php->pdid,
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&rhp->rdev.resource.pdid_fifo_lock);
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kfree(php);
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return 0;
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}
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static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
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struct ib_ucontext *context,
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struct ib_udata *udata)
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{
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struct c4iw_pd *php;
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u32 pdid;
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struct c4iw_dev *rhp;
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PDBG("%s ibdev %p\n", __func__, ibdev);
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rhp = (struct c4iw_dev *) ibdev;
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pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_fifo,
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&rhp->rdev.resource.pdid_fifo_lock);
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if (!pdid)
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return ERR_PTR(-EINVAL);
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php = kzalloc(sizeof(*php), GFP_KERNEL);
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if (!php) {
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c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, pdid,
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&rhp->rdev.resource.pdid_fifo_lock);
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return ERR_PTR(-ENOMEM);
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}
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php->pdid = pdid;
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php->rhp = rhp;
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if (context) {
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if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
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c4iw_deallocate_pd(&php->ibpd);
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return ERR_PTR(-EFAULT);
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}
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}
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PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
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return &php->ibpd;
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}
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static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
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u16 *pkey)
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{
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PDBG("%s ibdev %p\n", __func__, ibdev);
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*pkey = 0;
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return 0;
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}
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static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
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union ib_gid *gid)
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{
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struct c4iw_dev *dev;
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PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
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__func__, ibdev, port, index, gid);
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dev = to_c4iw_dev(ibdev);
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BUG_ON(port == 0);
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memset(&(gid->raw[0]), 0, sizeof(gid->raw));
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memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
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return 0;
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}
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static int c4iw_query_device(struct ib_device *ibdev,
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struct ib_device_attr *props)
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{
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struct c4iw_dev *dev;
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PDBG("%s ibdev %p\n", __func__, ibdev);
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dev = to_c4iw_dev(ibdev);
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memset(props, 0, sizeof *props);
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memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
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props->hw_ver = dev->rdev.lldi.adapter_type;
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props->fw_ver = dev->rdev.lldi.fw_vers;
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props->device_cap_flags = dev->device_cap_flags;
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props->page_size_cap = T4_PAGESIZE_MASK;
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props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
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props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
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props->max_mr_size = T4_MAX_MR_SIZE;
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props->max_qp = T4_MAX_NUM_QP;
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props->max_qp_wr = T4_MAX_QP_DEPTH;
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props->max_sge = T4_MAX_RECV_SGE;
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props->max_sge_rd = 1;
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props->max_qp_rd_atom = c4iw_max_read_depth;
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props->max_qp_init_rd_atom = c4iw_max_read_depth;
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props->max_cq = T4_MAX_NUM_CQ;
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props->max_cqe = T4_MAX_CQ_DEPTH;
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props->max_mr = c4iw_num_stags(&dev->rdev);
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props->max_pd = T4_MAX_NUM_PD;
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props->local_ca_ack_delay = 0;
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props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH;
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return 0;
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}
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static int c4iw_query_port(struct ib_device *ibdev, u8 port,
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struct ib_port_attr *props)
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{
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struct c4iw_dev *dev;
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struct net_device *netdev;
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struct in_device *inetdev;
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PDBG("%s ibdev %p\n", __func__, ibdev);
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dev = to_c4iw_dev(ibdev);
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netdev = dev->rdev.lldi.ports[port-1];
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memset(props, 0, sizeof(struct ib_port_attr));
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props->max_mtu = IB_MTU_4096;
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if (netdev->mtu >= 4096)
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props->active_mtu = IB_MTU_4096;
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else if (netdev->mtu >= 2048)
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props->active_mtu = IB_MTU_2048;
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else if (netdev->mtu >= 1024)
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props->active_mtu = IB_MTU_1024;
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else if (netdev->mtu >= 512)
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props->active_mtu = IB_MTU_512;
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else
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props->active_mtu = IB_MTU_256;
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if (!netif_carrier_ok(netdev))
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props->state = IB_PORT_DOWN;
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else {
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inetdev = in_dev_get(netdev);
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if (inetdev) {
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if (inetdev->ifa_list)
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props->state = IB_PORT_ACTIVE;
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else
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props->state = IB_PORT_INIT;
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in_dev_put(inetdev);
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} else
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props->state = IB_PORT_INIT;
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}
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props->port_cap_flags =
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IB_PORT_CM_SUP |
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IB_PORT_SNMP_TUNNEL_SUP |
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IB_PORT_REINIT_SUP |
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IB_PORT_DEVICE_MGMT_SUP |
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IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
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props->gid_tbl_len = 1;
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props->pkey_tbl_len = 1;
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props->active_width = 2;
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props->active_speed = 2;
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props->max_msg_sz = -1;
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return 0;
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}
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static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
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ibdev.dev);
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PDBG("%s dev 0x%p\n", __func__, dev);
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return sprintf(buf, "%d\n", c4iw_dev->rdev.lldi.adapter_type);
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}
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static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
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ibdev.dev);
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PDBG("%s dev 0x%p\n", __func__, dev);
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return sprintf(buf, "%u.%u.%u.%u\n",
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FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers),
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FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers),
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FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers),
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FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers));
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}
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static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
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ibdev.dev);
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struct ethtool_drvinfo info;
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struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
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PDBG("%s dev 0x%p\n", __func__, dev);
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lldev->ethtool_ops->get_drvinfo(lldev, &info);
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return sprintf(buf, "%s\n", info.driver);
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}
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static ssize_t show_board(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
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ibdev.dev);
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PDBG("%s dev 0x%p\n", __func__, dev);
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return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
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c4iw_dev->rdev.lldi.pdev->device);
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}
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static int c4iw_get_mib(struct ib_device *ibdev,
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union rdma_protocol_stats *stats)
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{
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struct tp_tcp_stats v4, v6;
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struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
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cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
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memset(stats, 0, sizeof *stats);
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stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs;
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stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs;
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stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs;
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stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs;
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return 0;
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}
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static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
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static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
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static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
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static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
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static struct device_attribute *c4iw_class_attributes[] = {
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&dev_attr_hw_rev,
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&dev_attr_fw_ver,
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&dev_attr_hca_type,
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&dev_attr_board_id,
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};
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int c4iw_register_device(struct c4iw_dev *dev)
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{
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int ret;
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int i;
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PDBG("%s c4iw_dev %p\n", __func__, dev);
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BUG_ON(!dev->rdev.lldi.ports[0]);
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strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX);
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memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
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memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
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dev->ibdev.owner = THIS_MODULE;
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dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
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if (fastreg_support)
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dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
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dev->ibdev.local_dma_lkey = 0;
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dev->ibdev.uverbs_cmd_mask =
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(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
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(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
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(1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
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(1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
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(1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
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(1ull << IB_USER_VERBS_CMD_REG_MR) |
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(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
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(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
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(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
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(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
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(1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
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(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
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(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.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.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
|
|
|
|
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;
|
|
}
|