iwch_provider.c 38.9 KB
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/*
 * Copyright (c) 2006 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>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
#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/slab.h>
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#include <asm/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>
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#include <rdma/ib_umem.h>
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#include <rdma/ib_user_verbs.h>

#include "cxio_hal.h"
#include "iwch.h"
#include "iwch_provider.h"
#include "iwch_cm.h"
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#include <rdma/cxgb3-abi.h>
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#include "common.h"
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static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
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				    struct ib_ah_attr *ah_attr,
				    struct ib_udata *udata)
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{
	return ERR_PTR(-ENOSYS);
}

static int iwch_ah_destroy(struct ib_ah *ah)
{
	return -ENOSYS;
}

static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
	return -ENOSYS;
}

static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
	return -ENOSYS;
}

static int iwch_process_mad(struct ib_device *ibdev,
			    int mad_flags,
			    u8 port_num,
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			    const struct ib_wc *in_wc,
			    const struct ib_grh *in_grh,
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			    const struct ib_mad_hdr *in_mad,
			    size_t in_mad_size,
			    struct ib_mad_hdr *out_mad,
			    size_t *out_mad_size,
			    u16 *out_mad_pkey_index)
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{
	return -ENOSYS;
}

static int iwch_dealloc_ucontext(struct ib_ucontext *context)
{
	struct iwch_dev *rhp = to_iwch_dev(context->device);
	struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
	struct iwch_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)
		kfree(mm);
	cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
	kfree(ucontext);
	return 0;
}

static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
					struct ib_udata *udata)
{
	struct iwch_ucontext *context;
	struct iwch_dev *rhp = to_iwch_dev(ibdev);

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	PDBG("%s ibdev %p\n", __func__, ibdev);
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	context = kzalloc(sizeof(*context), GFP_KERNEL);
	if (!context)
		return ERR_PTR(-ENOMEM);
	cxio_init_ucontext(&rhp->rdev, &context->uctx);
	INIT_LIST_HEAD(&context->mmaps);
	spin_lock_init(&context->mmap_lock);
	return &context->ibucontext;
}

static int iwch_destroy_cq(struct ib_cq *ib_cq)
{
	struct iwch_cq *chp;

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	PDBG("%s ib_cq %p\n", __func__, ib_cq);
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	chp = to_iwch_cq(ib_cq);

	remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
	atomic_dec(&chp->refcnt);
	wait_event(chp->wait, !atomic_read(&chp->refcnt));

	cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
	kfree(chp);
	return 0;
}

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static struct ib_cq *iwch_create_cq(struct ib_device *ibdev,
				    const struct ib_cq_init_attr *attr,
				    struct ib_ucontext *ib_context,
				    struct ib_udata *udata)
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{
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	int entries = attr->cqe;
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	struct iwch_dev *rhp;
	struct iwch_cq *chp;
	struct iwch_create_cq_resp uresp;
	struct iwch_create_cq_req ureq;
	struct iwch_ucontext *ucontext = NULL;
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	static int warned;
	size_t resplen;
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	PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
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	if (attr->flags)
		return ERR_PTR(-EINVAL);

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	rhp = to_iwch_dev(ibdev);
	chp = kzalloc(sizeof(*chp), GFP_KERNEL);
	if (!chp)
		return ERR_PTR(-ENOMEM);

	if (ib_context) {
		ucontext = to_iwch_ucontext(ib_context);
		if (!t3a_device(rhp)) {
			if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
				kfree(chp);
				return ERR_PTR(-EFAULT);
			}
			chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
		}
	}

	if (t3a_device(rhp)) {

		/*
		 * T3A: Add some fluff to handle extra CQEs inserted
		 * for various errors.
		 * Additional CQE possibilities:
		 *      TERMINATE,
		 *      incoming RDMA WRITE Failures
		 *      incoming RDMA READ REQUEST FAILUREs
		 * NOTE: We cannot ensure the CQ won't overflow.
		 */
		entries += 16;
	}
	entries = roundup_pow_of_two(entries);
	chp->cq.size_log2 = ilog2(entries);

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	if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
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		kfree(chp);
		return ERR_PTR(-ENOMEM);
	}
	chp->rhp = rhp;
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	chp->ibcq.cqe = 1 << chp->cq.size_log2;
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	spin_lock_init(&chp->lock);
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	spin_lock_init(&chp->comp_handler_lock);
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	atomic_set(&chp->refcnt, 1);
	init_waitqueue_head(&chp->wait);
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	if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
		cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
		kfree(chp);
		return ERR_PTR(-ENOMEM);
	}
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	if (ucontext) {
		struct iwch_mm_entry *mm;

		mm = kmalloc(sizeof *mm, GFP_KERNEL);
		if (!mm) {
			iwch_destroy_cq(&chp->ibcq);
			return ERR_PTR(-ENOMEM);
		}
		uresp.cqid = chp->cq.cqid;
		uresp.size_log2 = chp->cq.size_log2;
		spin_lock(&ucontext->mmap_lock);
		uresp.key = ucontext->key;
		ucontext->key += PAGE_SIZE;
		spin_unlock(&ucontext->mmap_lock);
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		mm->key = uresp.key;
		mm->addr = virt_to_phys(chp->cq.queue);
		if (udata->outlen < sizeof uresp) {
			if (!warned++)
				printk(KERN_WARNING MOD "Warning - "
				       "downlevel libcxgb3 (non-fatal).\n");
			mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
					     sizeof(struct t3_cqe));
			resplen = sizeof(struct iwch_create_cq_resp_v0);
		} else {
			mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
					     sizeof(struct t3_cqe));
			uresp.memsize = mm->len;
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			uresp.reserved = 0;
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			resplen = sizeof uresp;
		}
		if (ib_copy_to_udata(udata, &uresp, resplen)) {
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			kfree(mm);
			iwch_destroy_cq(&chp->ibcq);
			return ERR_PTR(-EFAULT);
		}
		insert_mmap(ucontext, mm);
	}
	PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
	     chp->cq.cqid, chp, (1 << chp->cq.size_log2),
	     (unsigned long long) chp->cq.dma_addr);
	return &chp->ibcq;
}

static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
{
#ifdef notyet
	struct iwch_cq *chp = to_iwch_cq(cq);
	struct t3_cq oldcq, newcq;
	int ret;

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	PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
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	/* We don't downsize... */
	if (cqe <= cq->cqe)
		return 0;

	/* create new t3_cq with new size */
	cqe = roundup_pow_of_two(cqe+1);
	newcq.size_log2 = ilog2(cqe);

	/* Dont allow resize to less than the current wce count */
	if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
		return -ENOMEM;
	}

	/* Quiesce all QPs using this CQ */
	ret = iwch_quiesce_qps(chp);
	if (ret) {
		return ret;
	}

	ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
	if (ret) {
		return ret;
	}

	/* copy CQEs */
	memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
				        sizeof(struct t3_cqe));

	/* old iwch_qp gets new t3_cq but keeps old cqid */
	oldcq = chp->cq;
	chp->cq = newcq;
	chp->cq.cqid = oldcq.cqid;

	/* resize new t3_cq to update the HW context */
	ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
	if (ret) {
		chp->cq = oldcq;
		return ret;
	}
	chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;

	/* destroy old t3_cq */
	oldcq.cqid = newcq.cqid;
	ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
	if (ret) {
		printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
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			__func__, ret);
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	}

	/* add user hooks here */

	/* resume qps */
	ret = iwch_resume_qps(chp);
	return ret;
#else
	return -ENOSYS;
#endif
}

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static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
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{
	struct iwch_dev *rhp;
	struct iwch_cq *chp;
	enum t3_cq_opcode cq_op;
	int err;
	unsigned long flag;
	u32 rptr;

	chp = to_iwch_cq(ibcq);
	rhp = chp->rhp;
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	if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
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		cq_op = CQ_ARM_SE;
	else
		cq_op = CQ_ARM_AN;
	if (chp->user_rptr_addr) {
		if (get_user(rptr, chp->user_rptr_addr))
			return -EFAULT;
		spin_lock_irqsave(&chp->lock, flag);
		chp->cq.rptr = rptr;
	} else
		spin_lock_irqsave(&chp->lock, flag);
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	PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
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	err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
	spin_unlock_irqrestore(&chp->lock, flag);
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	if (err < 0)
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		printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
		       chp->cq.cqid);
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	if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
		err = 0;
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	return err;
}

static int iwch_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 cxio_rdev *rdev_p;
	int ret = 0;
	struct iwch_mm_entry *mm;
	struct iwch_ucontext *ucontext;
364
	u64 addr;
365

366
	PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
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	     key, len);

	if (vma->vm_start & (PAGE_SIZE-1)) {
	        return -EINVAL;
	}

	rdev_p = &(to_iwch_dev(context->device)->rdev);
	ucontext = to_iwch_ucontext(context);

	mm = remove_mmap(ucontext, key, len);
	if (!mm)
		return -EINVAL;
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	addr = mm->addr;
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	kfree(mm);

382 383
	if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
	    (addr < (rdev_p->rnic_info.udbell_physbase +
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		       rdev_p->rnic_info.udbell_len))) {

		/*
		 * Map T3 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,
397
					 addr >> PAGE_SHIFT,
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				         len, vma->vm_page_prot);
	} else {

		/*
		 * Map WQ or CQ contig dma memory...
		 */
		ret = remap_pfn_range(vma, vma->vm_start,
405
				      addr >> PAGE_SHIFT,
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				      len, vma->vm_page_prot);
	}

	return ret;
}

static int iwch_deallocate_pd(struct ib_pd *pd)
{
	struct iwch_dev *rhp;
	struct iwch_pd *php;

	php = to_iwch_pd(pd);
	rhp = php->rhp;
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	PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
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	cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
	kfree(php);
	return 0;
}

static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
			       struct ib_ucontext *context,
			       struct ib_udata *udata)
{
	struct iwch_pd *php;
	u32 pdid;
	struct iwch_dev *rhp;

433
	PDBG("%s ibdev %p\n", __func__, ibdev);
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	rhp = (struct iwch_dev *) ibdev;
	pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
	if (!pdid)
		return ERR_PTR(-EINVAL);
	php = kzalloc(sizeof(*php), GFP_KERNEL);
	if (!php) {
		cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
		return ERR_PTR(-ENOMEM);
	}
	php->pdid = pdid;
	php->rhp = rhp;
	if (context) {
		if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
			iwch_deallocate_pd(&php->ibpd);
			return ERR_PTR(-EFAULT);
		}
	}
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	PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
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	return &php->ibpd;
}

static int iwch_dereg_mr(struct ib_mr *ib_mr)
{
	struct iwch_dev *rhp;
	struct iwch_mr *mhp;
	u32 mmid;

461
	PDBG("%s ib_mr %p\n", __func__, ib_mr);
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	mhp = to_iwch_mr(ib_mr);
464
	kfree(mhp->pages);
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	rhp = mhp->rhp;
	mmid = mhp->attr.stag >> 8;
	cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
		       mhp->attr.pbl_addr);
469
	iwch_free_pbl(mhp);
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	remove_handle(rhp, &rhp->mmidr, mmid);
	if (mhp->kva)
		kfree((void *) (unsigned long) mhp->kva);
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	if (mhp->umem)
		ib_umem_release(mhp->umem);
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	PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
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	kfree(mhp);
	return 0;
}

480
static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
481
{
482 483 484 485
	const u64 total_size = 0xffffffff;
	const u64 mask = (total_size + PAGE_SIZE - 1) & PAGE_MASK;
	struct iwch_pd *php = to_iwch_pd(pd);
	struct iwch_dev *rhp = php->rhp;
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	struct iwch_mr *mhp;
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	__be64 *page_list;
	int shift = 26, npages, ret, i;
489

490
	PDBG("%s ib_pd %p\n", __func__, pd);
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	/*
	 * T3 only supports 32 bits of size.
	 */
	if (sizeof(phys_addr_t) > 4) {
		pr_warn_once(MOD "Cannot support dma_mrs on this platform.\n");
		return ERR_PTR(-ENOTSUPP);
	}
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	mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
	if (!mhp)
		return ERR_PTR(-ENOMEM);

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	mhp->rhp = rhp;

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	npages = (total_size + (1ULL << shift) - 1) >> shift;
	if (!npages) {
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		ret = -EINVAL;
		goto err;
	}

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	page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
	if (!page_list) {
		ret = -ENOMEM;
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		goto err;
	}

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	for (i = 0; i < npages; i++)
		page_list[i] = cpu_to_be64((u64)i << shift);

	PDBG("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
		__func__, mask, shift, total_size, npages);
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	ret = iwch_alloc_pbl(mhp, npages);
	if (ret) {
		kfree(page_list);
		goto err_pbl;
	}

	ret = iwch_write_pbl(mhp, page_list, npages, 0);
	kfree(page_list);
	if (ret)
		goto err_pbl;

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	mhp->attr.pdid = php->pdid;
	mhp->attr.zbva = 0;

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	mhp->attr.perms = iwch_ib_to_tpt_access(acc);
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	mhp->attr.va_fbo = 0;
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	mhp->attr.page_size = shift - 12;

	mhp->attr.len = (u32) total_size;
	mhp->attr.pbl_size = npages;
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	ret = iwch_register_mem(rhp, php, mhp, shift);
	if (ret)
		goto err_pbl;

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	return &mhp->ibmr;
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err_pbl:
	iwch_free_pbl(mhp);

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err:
	kfree(mhp);
	return ERR_PTR(ret);
}

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static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
				      u64 virt, int acc, struct ib_udata *udata)
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{
	__be64 *pages;
	int shift, n, len;
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	int i, k, entry;
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	int err = 0;
	struct iwch_dev *rhp;
	struct iwch_pd *php;
	struct iwch_mr *mhp;
	struct iwch_reg_user_mr_resp uresp;
569
	struct scatterlist *sg;
570
	PDBG("%s ib_pd %p\n", __func__, pd);
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	php = to_iwch_pd(pd);
	rhp = php->rhp;
	mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
	if (!mhp)
		return ERR_PTR(-ENOMEM);

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	mhp->rhp = rhp;

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	mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
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	if (IS_ERR(mhp->umem)) {
		err = PTR_ERR(mhp->umem);
		kfree(mhp);
		return ERR_PTR(err);
	}

	shift = ffs(mhp->umem->page_size) - 1;

589
	n = mhp->umem->nmap;
590

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	err = iwch_alloc_pbl(mhp, n);
	if (err)
		goto err;

	pages = (__be64 *) __get_free_page(GFP_KERNEL);
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	if (!pages) {
		err = -ENOMEM;
598
		goto err_pbl;
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	}

	i = n = 0;

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	for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
			len = sg_dma_len(sg) >> shift;
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			for (k = 0; k < len; ++k) {
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				pages[i++] = cpu_to_be64(sg_dma_address(sg) +
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					mhp->umem->page_size * k);
608 609 610 611 612 613 614
				if (i == PAGE_SIZE / sizeof *pages) {
					err = iwch_write_pbl(mhp, pages, i, n);
					if (err)
						goto pbl_done;
					n += i;
					i = 0;
				}
615
			}
616
	}
617

618 619 620 621 622 623 624 625
	if (i)
		err = iwch_write_pbl(mhp, pages, i, n);

pbl_done:
	free_page((unsigned long) pages);
	if (err)
		goto err_pbl;

626 627
	mhp->attr.pdid = php->pdid;
	mhp->attr.zbva = 0;
628
	mhp->attr.perms = iwch_ib_to_tpt_access(acc);
629
	mhp->attr.va_fbo = virt;
630
	mhp->attr.page_size = shift - 12;
631
	mhp->attr.len = (u32) length;
632 633

	err = iwch_register_mem(rhp, php, mhp, shift);
634
	if (err)
635
		goto err_pbl;
636

637
	if (udata && !t3a_device(rhp)) {
638
		uresp.pbl_addr = (mhp->attr.pbl_addr -
639
				 rhp->rdev.rnic_info.pbl_base) >> 3;
640
		PDBG("%s user resp pbl_addr 0x%x\n", __func__,
641 642 643 644 645 646 647 648 649 650 651
		     uresp.pbl_addr);

		if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
			iwch_dereg_mr(&mhp->ibmr);
			err = -EFAULT;
			goto err;
		}
	}

	return &mhp->ibmr;

652 653 654
err_pbl:
	iwch_free_pbl(mhp);

655
err:
656
	ib_umem_release(mhp->umem);
657 658 659 660
	kfree(mhp);
	return ERR_PTR(err);
}

661 662
static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
				   struct ib_udata *udata)
663 664 665 666 667 668 669 670
{
	struct iwch_dev *rhp;
	struct iwch_pd *php;
	struct iwch_mw *mhp;
	u32 mmid;
	u32 stag = 0;
	int ret;

671 672 673
	if (type != IB_MW_TYPE_1)
		return ERR_PTR(-EINVAL);

674 675 676 677 678 679 680 681 682 683 684 685 686 687 688
	php = to_iwch_pd(pd);
	rhp = php->rhp;
	mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
	if (!mhp)
		return ERR_PTR(-ENOMEM);
	ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
	if (ret) {
		kfree(mhp);
		return ERR_PTR(ret);
	}
	mhp->rhp = rhp;
	mhp->attr.pdid = php->pdid;
	mhp->attr.type = TPT_MW;
	mhp->attr.stag = stag;
	mmid = (stag) >> 8;
689
	mhp->ibmw.rkey = stag;
690 691 692 693 694
	if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
		cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
		kfree(mhp);
		return ERR_PTR(-ENOMEM);
	}
695
	PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
696 697 698 699 700 701 702 703 704 705 706 707 708 709
	return &(mhp->ibmw);
}

static int iwch_dealloc_mw(struct ib_mw *mw)
{
	struct iwch_dev *rhp;
	struct iwch_mw *mhp;
	u32 mmid;

	mhp = to_iwch_mw(mw);
	rhp = mhp->rhp;
	mmid = (mw->rkey) >> 8;
	cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
	remove_handle(rhp, &rhp->mmidr, mmid);
710
	PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
711
	kfree(mhp);
712 713 714
	return 0;
}

S
Sagi Grimberg 已提交
715 716 717
static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
				   enum ib_mr_type mr_type,
				   u32 max_num_sg)
718 719 720 721 722 723
{
	struct iwch_dev *rhp;
	struct iwch_pd *php;
	struct iwch_mr *mhp;
	u32 mmid;
	u32 stag = 0;
724
	int ret = 0;
725

S
Sagi Grimberg 已提交
726 727 728 729
	if (mr_type != IB_MR_TYPE_MEM_REG ||
	    max_num_sg > T3_MAX_FASTREG_DEPTH)
		return ERR_PTR(-EINVAL);

730 731 732 733
	php = to_iwch_pd(pd);
	rhp = php->rhp;
	mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
	if (!mhp)
734
		goto err;
735

736 737 738 739 740 741
	mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
	if (!mhp->pages) {
		ret = -ENOMEM;
		goto pl_err;
	}

742
	mhp->rhp = rhp;
S
Sagi Grimberg 已提交
743
	ret = iwch_alloc_pbl(mhp, max_num_sg);
744 745
	if (ret)
		goto err1;
S
Sagi Grimberg 已提交
746
	mhp->attr.pbl_size = max_num_sg;
747 748
	ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
				 mhp->attr.pbl_size, mhp->attr.pbl_addr);
749 750
	if (ret)
		goto err2;
751 752 753 754 755 756
	mhp->attr.pdid = php->pdid;
	mhp->attr.type = TPT_NON_SHARED_MR;
	mhp->attr.stag = stag;
	mhp->attr.state = 1;
	mmid = (stag) >> 8;
	mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
757 758 759
	if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
		goto err3;

760 761
	PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
	return &(mhp->ibmr);
762 763 764 765 766 767
err3:
	cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
		       mhp->attr.pbl_addr);
err2:
	iwch_free_pbl(mhp);
err1:
768 769
	kfree(mhp->pages);
pl_err:
770 771 772
	kfree(mhp);
err:
	return ERR_PTR(ret);
773 774
}

775 776 777 778 779 780 781 782 783 784 785 786
static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
{
	struct iwch_mr *mhp = to_iwch_mr(ibmr);

	if (unlikely(mhp->npages == mhp->attr.pbl_size))
		return -ENOMEM;

	mhp->pages[mhp->npages++] = addr;

	return 0;
}

787
static int iwch_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
788
			  int sg_nents, unsigned int *sg_offset)
789 790 791 792 793
{
	struct iwch_mr *mhp = to_iwch_mr(ibmr);

	mhp->npages = 0;

794
	return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, iwch_set_page);
795 796
}

797 798 799 800 801 802 803 804 805 806
static int iwch_destroy_qp(struct ib_qp *ib_qp)
{
	struct iwch_dev *rhp;
	struct iwch_qp *qhp;
	struct iwch_qp_attributes attrs;
	struct iwch_ucontext *ucontext;

	qhp = to_iwch_qp(ib_qp);
	rhp = qhp->rhp;

807 808
	attrs.next_state = IWCH_QP_STATE_ERROR;
	iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
809 810 811 812 813 814 815 816 817 818 819 820
	wait_event(qhp->wait, !qhp->ep);

	remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);

	atomic_dec(&qhp->refcnt);
	wait_event(qhp->wait, !atomic_read(&qhp->refcnt));

	ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
				  : NULL;
	cxio_destroy_qp(&rhp->rdev, &qhp->wq,
			ucontext ? &ucontext->uctx : &rhp->rdev.uctx);

821
	PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
	     ib_qp, qhp->wq.qpid, qhp);
	kfree(qhp);
	return 0;
}

static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
			     struct ib_qp_init_attr *attrs,
			     struct ib_udata *udata)
{
	struct iwch_dev *rhp;
	struct iwch_qp *qhp;
	struct iwch_pd *php;
	struct iwch_cq *schp;
	struct iwch_cq *rchp;
	struct iwch_create_qp_resp uresp;
	int wqsize, sqsize, rqsize;
	struct iwch_ucontext *ucontext;

840
	PDBG("%s ib_pd %p\n", __func__, pd);
841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861
	if (attrs->qp_type != IB_QPT_RC)
		return ERR_PTR(-EINVAL);
	php = to_iwch_pd(pd);
	rhp = php->rhp;
	schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
	rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
	if (!schp || !rchp)
		return ERR_PTR(-EINVAL);

	/* The RQT size must be # of entries + 1 rounded up to a power of two */
	rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
	if (rqsize == attrs->cap.max_recv_wr)
		rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);

	/* T3 doesn't support RQT depth < 16 */
	if (rqsize < 16)
		rqsize = 16;

	if (rqsize > T3_MAX_RQ_SIZE)
		return ERR_PTR(-EINVAL);

862 863 864
	if (attrs->cap.max_inline_data > T3_MAX_INLINE)
		return ERR_PTR(-EINVAL);

865 866 867 868 869 870 871
	/*
	 * NOTE: The SQ and total WQ sizes don't need to be
	 * a power of two.  However, all the code assumes
	 * they are. EG: Q_FREECNT() and friends.
	 */
	sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
	wqsize = roundup_pow_of_two(rqsize + sqsize);
872 873 874 875 876 877 878 879 880

	/*
	 * Kernel users need more wq space for fastreg WRs which can take
	 * 2 WR fragments.
	 */
	ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
	if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
		wqsize = roundup_pow_of_two(rqsize +
				roundup_pow_of_two(attrs->cap.max_send_wr * 2));
881
	PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
882 883 884 885 886 887 888 889 890 891 892 893
	     wqsize, sqsize, rqsize);
	qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
	if (!qhp)
		return ERR_PTR(-ENOMEM);
	qhp->wq.size_log2 = ilog2(wqsize);
	qhp->wq.rq_size_log2 = ilog2(rqsize);
	qhp->wq.sq_size_log2 = ilog2(sqsize);
	if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
			   ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
		kfree(qhp);
		return ERR_PTR(-ENOMEM);
	}
894

895 896
	attrs->cap.max_recv_wr = rqsize - 1;
	attrs->cap.max_send_wr = sqsize;
897 898
	attrs->cap.max_inline_data = T3_MAX_INLINE;

899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924
	qhp->rhp = rhp;
	qhp->attr.pd = php->pdid;
	qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
	qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
	qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
	qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
	qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
	qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
	qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
	qhp->attr.state = IWCH_QP_STATE_IDLE;
	qhp->attr.next_state = IWCH_QP_STATE_IDLE;

	/*
	 * XXX - These don't get passed in from the openib user
	 * at create time.  The CM sets them via a QP modify.
	 * Need to fix...  I think the CM should
	 */
	qhp->attr.enable_rdma_read = 1;
	qhp->attr.enable_rdma_write = 1;
	qhp->attr.enable_bind = 1;
	qhp->attr.max_ord = 1;
	qhp->attr.max_ird = 1;

	spin_lock_init(&qhp->lock);
	init_waitqueue_head(&qhp->wait);
	atomic_set(&qhp->refcnt, 1);
925 926 927 928 929 930 931

	if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
		cxio_destroy_qp(&rhp->rdev, &qhp->wq,
			ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
		kfree(qhp);
		return ERR_PTR(-ENOMEM);
	}
932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977

	if (udata) {

		struct iwch_mm_entry *mm1, *mm2;

		mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
		if (!mm1) {
			iwch_destroy_qp(&qhp->ibqp);
			return ERR_PTR(-ENOMEM);
		}

		mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
		if (!mm2) {
			kfree(mm1);
			iwch_destroy_qp(&qhp->ibqp);
			return ERR_PTR(-ENOMEM);
		}

		uresp.qpid = qhp->wq.qpid;
		uresp.size_log2 = qhp->wq.size_log2;
		uresp.sq_size_log2 = qhp->wq.sq_size_log2;
		uresp.rq_size_log2 = qhp->wq.rq_size_log2;
		spin_lock(&ucontext->mmap_lock);
		uresp.key = ucontext->key;
		ucontext->key += PAGE_SIZE;
		uresp.db_key = ucontext->key;
		ucontext->key += PAGE_SIZE;
		spin_unlock(&ucontext->mmap_lock);
		if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
			kfree(mm1);
			kfree(mm2);
			iwch_destroy_qp(&qhp->ibqp);
			return ERR_PTR(-EFAULT);
		}
		mm1->key = uresp.key;
		mm1->addr = virt_to_phys(qhp->wq.queue);
		mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
		insert_mmap(ucontext, mm1);
		mm2->key = uresp.db_key;
		mm2->addr = qhp->wq.udb & PAGE_MASK;
		mm2->len = PAGE_SIZE;
		insert_mmap(ucontext, mm2);
	}
	qhp->ibqp.qp_num = qhp->wq.qpid;
	init_timer(&(qhp->timer));
	PDBG("%s sq_num_entries %d, rq_num_entries %d "
S
Steve Wise 已提交
978
	     "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
979
	     __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
980
	     qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
S
Steve Wise 已提交
981
	     1 << qhp->wq.size_log2, qhp->wq.rq_addr);
982 983 984 985 986 987 988 989 990 991 992
	return &qhp->ibqp;
}

static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
		      int attr_mask, struct ib_udata *udata)
{
	struct iwch_dev *rhp;
	struct iwch_qp *qhp;
	enum iwch_qp_attr_mask mask = 0;
	struct iwch_qp_attributes attrs;

993
	PDBG("%s ib_qp %p\n", __func__, ibqp);
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025

	/* iwarp does not support the RTR state */
	if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
		attr_mask &= ~IB_QP_STATE;

	/* Make sure we still have something left to do */
	if (!attr_mask)
		return 0;

	memset(&attrs, 0, sizeof attrs);
	qhp = to_iwch_qp(ibqp);
	rhp = qhp->rhp;

	attrs.next_state = iwch_convert_state(attr->qp_state);
	attrs.enable_rdma_read = (attr->qp_access_flags &
			       IB_ACCESS_REMOTE_READ) ?  1 : 0;
	attrs.enable_rdma_write = (attr->qp_access_flags &
				IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
	attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;


	mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
	mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
			(IWCH_QP_ATTR_ENABLE_RDMA_READ |
			 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
			 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;

	return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
}

void iwch_qp_add_ref(struct ib_qp *qp)
{
1026
	PDBG("%s ib_qp %p\n", __func__, qp);
1027 1028 1029 1030 1031
	atomic_inc(&(to_iwch_qp(qp)->refcnt));
}

void iwch_qp_rem_ref(struct ib_qp *qp)
{
1032
	PDBG("%s ib_qp %p\n", __func__, qp);
1033 1034 1035 1036
	if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
	        wake_up(&(to_iwch_qp(qp)->wait));
}

A
Adrian Bunk 已提交
1037
static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1038
{
1039
	PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1040 1041 1042 1043 1044 1045 1046
	return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
}


static int iwch_query_pkey(struct ib_device *ibdev,
			   u8 port, u16 index, u16 * pkey)
{
1047
	PDBG("%s ibdev %p\n", __func__, ibdev);
1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
	*pkey = 0;
	return 0;
}

static int iwch_query_gid(struct ib_device *ibdev, u8 port,
			  int index, union ib_gid *gid)
{
	struct iwch_dev *dev;

	PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1058
	       __func__, ibdev, port, index, gid);
1059 1060 1061 1062 1063 1064 1065
	dev = to_iwch_dev(ibdev);
	BUG_ON(port == 0 || port > 2);
	memset(&(gid->raw[0]), 0, sizeof(gid->raw));
	memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
	return 0;
}

1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
{
	struct ethtool_drvinfo info;
	struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
	char *cp, *next;
	unsigned fw_maj, fw_min, fw_mic;

	lldev->ethtool_ops->get_drvinfo(lldev, &info);

	next = info.fw_version + 1;
	cp = strsep(&next, ".");
	sscanf(cp, "%i", &fw_maj);
	cp = strsep(&next, ".");
	sscanf(cp, "%i", &fw_min);
	cp = strsep(&next, ".");
	sscanf(cp, "%i", &fw_mic);

	return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
	       (fw_mic & 0xffff);
}

1087 1088
static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
			     struct ib_udata *uhw)
1089 1090 1091
{

	struct iwch_dev *dev;
1092

1093
	PDBG("%s ibdev %p\n", __func__, ibdev);
1094

1095 1096 1097
	if (uhw->inlen || uhw->outlen)
		return -EINVAL;

1098 1099 1100
	dev = to_iwch_dev(ibdev);
	memset(props, 0, sizeof *props);
	memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1101 1102
	props->hw_ver = dev->rdev.t3cdev_p->type;
	props->fw_ver = fw_vers_string_to_u64(dev);
1103
	props->device_cap_flags = dev->device_cap_flags;
1104
	props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1105 1106
	props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
	props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1107
	props->max_mr_size = dev->attr.max_mr_size;
1108 1109 1110 1111 1112
	props->max_qp = dev->attr.max_qps;
	props->max_qp_wr = dev->attr.max_wrs;
	props->max_sge = dev->attr.max_sge_per_wr;
	props->max_sge_rd = 1;
	props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1113
	props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1114 1115 1116 1117 1118
	props->max_cq = dev->attr.max_cqs;
	props->max_cqe = dev->attr.max_cqes_per_cq;
	props->max_mr = dev->attr.max_mem_regs;
	props->max_pd = dev->attr.max_pds;
	props->local_ca_ack_delay = 0;
1119
	props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1120 1121 1122 1123 1124 1125 1126

	return 0;
}

static int iwch_query_port(struct ib_device *ibdev,
			   u8 port, struct ib_port_attr *props)
{
1127 1128 1129 1130
	struct iwch_dev *dev;
	struct net_device *netdev;
	struct in_device *inetdev;

1131
	PDBG("%s ibdev %p\n", __func__, ibdev);
1132

1133 1134 1135
	dev = to_iwch_dev(ibdev);
	netdev = dev->rdev.port_info.lldevs[port-1];

1136
	memset(props, 0, sizeof(struct ib_port_attr));
1137
	props->max_mtu = IB_MTU_4096;
1138
	props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
1139 1140 1141 1142 1143

	if (!netif_carrier_ok(netdev))
		props->state = IB_PORT_DOWN;
	else {
		inetdev = in_dev_get(netdev);
1144 1145 1146 1147 1148 1149 1150
		if (inetdev) {
			if (inetdev->ifa_list)
				props->state = IB_PORT_ACTIVE;
			else
				props->state = IB_PORT_INIT;
			in_dev_put(inetdev);
		} else
1151 1152 1153
			props->state = IB_PORT_INIT;
	}

1154 1155 1156 1157 1158 1159 1160 1161 1162
	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;
1163
	props->active_speed = IB_SPEED_DDR;
1164 1165 1166 1167 1168
	props->max_msg_sz = -1;

	return 0;
}

1169 1170
static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
			char *buf)
1171
{
1172 1173 1174 1175
	struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
						 ibdev.dev);
	PDBG("%s dev 0x%p\n", __func__, dev);
	return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1176 1177
}

1178 1179
static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
			char *buf)
1180
{
1181 1182
	struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
						 ibdev.dev);
1183
	struct ethtool_drvinfo info;
1184
	struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1185

1186
	PDBG("%s dev 0x%p\n", __func__, dev);
1187 1188 1189 1190
	lldev->ethtool_ops->get_drvinfo(lldev, &info);
	return sprintf(buf, "%s\n", info.driver);
}

1191 1192
static ssize_t show_board(struct device *dev, struct device_attribute *attr,
			  char *buf)
1193
{
1194 1195 1196 1197 1198
	struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
						 ibdev.dev);
	PDBG("%s dev 0x%p\n", __func__, dev);
	return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
		       iwch_dev->rdev.rnic_info.pdev->device);
1199 1200
}

1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272
enum counters {
	IPINRECEIVES,
	IPINHDRERRORS,
	IPINADDRERRORS,
	IPINUNKNOWNPROTOS,
	IPINDISCARDS,
	IPINDELIVERS,
	IPOUTREQUESTS,
	IPOUTDISCARDS,
	IPOUTNOROUTES,
	IPREASMTIMEOUT,
	IPREASMREQDS,
	IPREASMOKS,
	IPREASMFAILS,
	TCPACTIVEOPENS,
	TCPPASSIVEOPENS,
	TCPATTEMPTFAILS,
	TCPESTABRESETS,
	TCPCURRESTAB,
	TCPINSEGS,
	TCPOUTSEGS,
	TCPRETRANSSEGS,
	TCPINERRS,
	TCPOUTRSTS,
	TCPRTOMIN,
	TCPRTOMAX,
	NR_COUNTERS
};

static const char * const names[] = {
	[IPINRECEIVES] = "ipInReceives",
	[IPINHDRERRORS] = "ipInHdrErrors",
	[IPINADDRERRORS] = "ipInAddrErrors",
	[IPINUNKNOWNPROTOS] = "ipInUnknownProtos",
	[IPINDISCARDS] = "ipInDiscards",
	[IPINDELIVERS] = "ipInDelivers",
	[IPOUTREQUESTS] = "ipOutRequests",
	[IPOUTDISCARDS] = "ipOutDiscards",
	[IPOUTNOROUTES] = "ipOutNoRoutes",
	[IPREASMTIMEOUT] = "ipReasmTimeout",
	[IPREASMREQDS] = "ipReasmReqds",
	[IPREASMOKS] = "ipReasmOKs",
	[IPREASMFAILS] = "ipReasmFails",
	[TCPACTIVEOPENS] = "tcpActiveOpens",
	[TCPPASSIVEOPENS] = "tcpPassiveOpens",
	[TCPATTEMPTFAILS] = "tcpAttemptFails",
	[TCPESTABRESETS] = "tcpEstabResets",
	[TCPCURRESTAB] = "tcpCurrEstab",
	[TCPINSEGS] = "tcpInSegs",
	[TCPOUTSEGS] = "tcpOutSegs",
	[TCPRETRANSSEGS] = "tcpRetransSegs",
	[TCPINERRS] = "tcpInErrs",
	[TCPOUTRSTS] = "tcpOutRsts",
	[TCPRTOMIN] = "tcpRtoMin",
	[TCPRTOMAX] = "tcpRtoMax",
};

static struct rdma_hw_stats *iwch_alloc_stats(struct ib_device *ibdev,
					      u8 port_num)
{
	BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);

	/* Our driver only supports device level stats */
	if (port_num != 0)
		return NULL;

	return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
					  RDMA_HW_STATS_DEFAULT_LIFESPAN);
}

static int iwch_get_mib(struct ib_device *ibdev, struct rdma_hw_stats *stats,
			u8 port, int index)
1273 1274 1275 1276 1277
{
	struct iwch_dev *dev;
	struct tp_mib_stats m;
	int ret;

1278 1279 1280
	if (port != 0 || !stats)
		return -ENOSYS;

1281 1282 1283 1284 1285 1286
	PDBG("%s ibdev %p\n", __func__, ibdev);
	dev = to_iwch_dev(ibdev);
	ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
	if (ret)
		return -ENOSYS;

1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313
	stats->value[IPINRECEIVES] = ((u64)m.ipInReceive_hi << 32) +	m.ipInReceive_lo;
	stats->value[IPINHDRERRORS] = ((u64)m.ipInHdrErrors_hi << 32) + m.ipInHdrErrors_lo;
	stats->value[IPINADDRERRORS] = ((u64)m.ipInAddrErrors_hi << 32) + m.ipInAddrErrors_lo;
	stats->value[IPINUNKNOWNPROTOS] = ((u64)m.ipInUnknownProtos_hi << 32) + m.ipInUnknownProtos_lo;
	stats->value[IPINDISCARDS] = ((u64)m.ipInDiscards_hi << 32) + m.ipInDiscards_lo;
	stats->value[IPINDELIVERS] = ((u64)m.ipInDelivers_hi << 32) + m.ipInDelivers_lo;
	stats->value[IPOUTREQUESTS] = ((u64)m.ipOutRequests_hi << 32) + m.ipOutRequests_lo;
	stats->value[IPOUTDISCARDS] = ((u64)m.ipOutDiscards_hi << 32) + m.ipOutDiscards_lo;
	stats->value[IPOUTNOROUTES] = ((u64)m.ipOutNoRoutes_hi << 32) + m.ipOutNoRoutes_lo;
	stats->value[IPREASMTIMEOUT] = 	m.ipReasmTimeout;
	stats->value[IPREASMREQDS] = m.ipReasmReqds;
	stats->value[IPREASMOKS] = m.ipReasmOKs;
	stats->value[IPREASMFAILS] = m.ipReasmFails;
	stats->value[TCPACTIVEOPENS] =	m.tcpActiveOpens;
	stats->value[TCPPASSIVEOPENS] =	m.tcpPassiveOpens;
	stats->value[TCPATTEMPTFAILS] = m.tcpAttemptFails;
	stats->value[TCPESTABRESETS] = m.tcpEstabResets;
	stats->value[TCPCURRESTAB] = m.tcpOutRsts;
	stats->value[TCPINSEGS] = m.tcpCurrEstab;
	stats->value[TCPOUTSEGS] = ((u64)m.tcpInSegs_hi << 32) + m.tcpInSegs_lo;
	stats->value[TCPRETRANSSEGS] = ((u64)m.tcpOutSegs_hi << 32) + m.tcpOutSegs_lo;
	stats->value[TCPINERRS] = ((u64)m.tcpRetransSeg_hi << 32) + m.tcpRetransSeg_lo,
	stats->value[TCPOUTRSTS] = ((u64)m.tcpInErrs_hi << 32) + m.tcpInErrs_lo;
	stats->value[TCPRTOMIN] = m.tcpRtoMin;
	stats->value[TCPRTOMAX] = m.tcpRtoMax;

	return stats->num_counters;
1314 1315
}

1316 1317 1318
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1319

1320 1321 1322
static struct device_attribute *iwch_class_attributes[] = {
	&dev_attr_hw_rev,
	&dev_attr_hca_type,
1323
	&dev_attr_board_id,
1324 1325
};

1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
			       struct ib_port_immutable *immutable)
{
	struct ib_port_attr attr;
	int err;

	err = iwch_query_port(ibdev, port_num, &attr);
	if (err)
		return err;

	immutable->pkey_tbl_len = attr.pkey_tbl_len;
	immutable->gid_tbl_len = attr.gid_tbl_len;
1338
	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
1339 1340 1341 1342

	return 0;
}

1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str,
			       size_t str_len)
{
	struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
	struct ethtool_drvinfo info;
	struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;

	PDBG("%s dev 0x%p\n", __func__, iwch_dev);
	lldev->ethtool_ops->get_drvinfo(lldev, &info);
	snprintf(str, str_len, "%s", info.fw_version);
}

1355 1356 1357 1358 1359
int iwch_register_device(struct iwch_dev *dev)
{
	int ret;
	int i;

1360
	PDBG("%s iwch_dev %p\n", __func__, dev);
1361 1362 1363 1364
	strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
	memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
	memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
	dev->ibdev.owner = THIS_MODULE;
1365 1366 1367
	dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
				IB_DEVICE_MEM_WINDOW |
				IB_DEVICE_MEM_MGT_EXTENSIONS;
1368 1369 1370

	/* cxgb3 supports STag 0. */
	dev->ibdev.local_dma_lkey = 0;
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390

	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;
1391
	BUILD_BUG_ON(sizeof(IWCH_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
1392 1393
	memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
	dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1394
	dev->ibdev.num_comp_vectors = 1;
1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
	dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
	dev->ibdev.query_device = iwch_query_device;
	dev->ibdev.query_port = iwch_query_port;
	dev->ibdev.query_pkey = iwch_query_pkey;
	dev->ibdev.query_gid = iwch_query_gid;
	dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
	dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
	dev->ibdev.mmap = iwch_mmap;
	dev->ibdev.alloc_pd = iwch_allocate_pd;
	dev->ibdev.dealloc_pd = iwch_deallocate_pd;
	dev->ibdev.create_ah = iwch_ah_create;
	dev->ibdev.destroy_ah = iwch_ah_destroy;
	dev->ibdev.create_qp = iwch_create_qp;
	dev->ibdev.modify_qp = iwch_ib_modify_qp;
	dev->ibdev.destroy_qp = iwch_destroy_qp;
	dev->ibdev.create_cq = iwch_create_cq;
	dev->ibdev.destroy_cq = iwch_destroy_cq;
	dev->ibdev.resize_cq = iwch_resize_cq;
	dev->ibdev.poll_cq = iwch_poll_cq;
	dev->ibdev.get_dma_mr = iwch_get_dma_mr;
	dev->ibdev.reg_user_mr = iwch_reg_user_mr;
	dev->ibdev.dereg_mr = iwch_dereg_mr;
	dev->ibdev.alloc_mw = iwch_alloc_mw;
	dev->ibdev.dealloc_mw = iwch_dealloc_mw;
S
Sagi Grimberg 已提交
1419
	dev->ibdev.alloc_mr = iwch_alloc_mr;
1420
	dev->ibdev.map_mr_sg = iwch_map_mr_sg;
1421 1422 1423 1424 1425 1426
	dev->ibdev.attach_mcast = iwch_multicast_attach;
	dev->ibdev.detach_mcast = iwch_multicast_detach;
	dev->ibdev.process_mad = iwch_process_mad;
	dev->ibdev.req_notify_cq = iwch_arm_cq;
	dev->ibdev.post_send = iwch_post_send;
	dev->ibdev.post_recv = iwch_post_receive;
1427 1428
	dev->ibdev.alloc_hw_stats = iwch_alloc_stats;
	dev->ibdev.get_hw_stats = iwch_get_mib;
1429
	dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1430
	dev->ibdev.get_port_immutable = iwch_port_immutable;
1431
	dev->ibdev.get_dev_fw_str = get_dev_fw_ver_str;
1432

1433 1434 1435 1436
	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
	if (!dev->ibdev.iwcm)
		return -ENOMEM;

1437 1438 1439 1440 1441 1442 1443 1444
	dev->ibdev.iwcm->connect = iwch_connect;
	dev->ibdev.iwcm->accept = iwch_accept_cr;
	dev->ibdev.iwcm->reject = iwch_reject_cr;
	dev->ibdev.iwcm->create_listen = iwch_create_listen;
	dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
	dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
	dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
	dev->ibdev.iwcm->get_qp = iwch_get_qp;
1445 1446
	memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
	       sizeof(dev->ibdev.iwcm->ifname));
1447

1448
	ret = ib_register_device(&dev->ibdev, NULL);
1449 1450 1451 1452
	if (ret)
		goto bail1;

	for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1453 1454
		ret = device_create_file(&dev->ibdev.dev,
					 iwch_class_attributes[i]);
1455 1456 1457 1458 1459 1460 1461 1462
		if (ret) {
			goto bail2;
		}
	}
	return 0;
bail2:
	ib_unregister_device(&dev->ibdev);
bail1:
1463
	kfree(dev->ibdev.iwcm);
1464 1465 1466 1467 1468 1469 1470
	return ret;
}

void iwch_unregister_device(struct iwch_dev *dev)
{
	int i;

1471
	PDBG("%s iwch_dev %p\n", __func__, dev);
1472
	for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1473 1474
		device_remove_file(&dev->ibdev.dev,
				   iwch_class_attributes[i]);
1475
	ib_unregister_device(&dev->ibdev);
1476
	kfree(dev->ibdev.iwcm);
1477 1478
	return;
}