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OpenCloudOS-Kernel/drivers/infiniband/hw/cxgb3/iwch_provider.c

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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>
#include <linux/sched/mm.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/rtnetlink.h>
#include <linux/inetdevice.h>
#include <linux/slab.h>
#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>
#include <rdma/ib_umem.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/uverbs_ioctl.h>
#include "cxio_hal.h"
#include "iwch.h"
#include "iwch_provider.h"
#include "iwch_cm.h"
#include <rdma/cxgb3-abi.h>
#include "common.h"
static void 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;
pr_debug("%s context %p\n", __func__, context);
list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
kfree(mm);
cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
}
static int iwch_alloc_ucontext(struct ib_ucontext *ucontext,
struct ib_udata *udata)
{
struct ib_device *ibdev = ucontext->device;
struct iwch_ucontext *context = to_iwch_ucontext(ucontext);
struct iwch_dev *rhp = to_iwch_dev(ibdev);
pr_debug("%s ibdev %p\n", __func__, ibdev);
cxio_init_ucontext(&rhp->rdev, &context->uctx);
INIT_LIST_HEAD(&context->mmaps);
spin_lock_init(&context->mmap_lock);
return 0;
}
static int iwch_destroy_cq(struct ib_cq *ib_cq)
{
struct iwch_cq *chp;
pr_debug("%s ib_cq %p\n", __func__, ib_cq);
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;
}
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)
{
int entries = attr->cqe;
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;
static int warned;
size_t resplen;
pr_debug("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
if (attr->flags)
return ERR_PTR(-EINVAL);
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);
if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
kfree(chp);
return ERR_PTR(-ENOMEM);
}
chp->rhp = rhp;
chp->ibcq.cqe = 1 << chp->cq.size_log2;
spin_lock_init(&chp->lock);
spin_lock_init(&chp->comp_handler_lock);
atomic_set(&chp->refcnt, 1);
init_waitqueue_head(&chp->wait);
if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
kfree(chp);
return ERR_PTR(-ENOMEM);
}
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);
mm->key = uresp.key;
mm->addr = virt_to_phys(chp->cq.queue);
if (udata->outlen < sizeof uresp) {
if (!warned++)
pr_warn("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;
uresp.reserved = 0;
resplen = sizeof uresp;
}
if (ib_copy_to_udata(udata, &uresp, resplen)) {
kfree(mm);
iwch_destroy_cq(&chp->ibcq);
return ERR_PTR(-EFAULT);
}
insert_mmap(ucontext, mm);
}
pr_debug("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;
pr_debug("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
/* 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) {
pr_err("%s - cxio_destroy_cq failed %d\n", __func__, ret);
}
/* add user hooks here */
/* resume qps */
ret = iwch_resume_qps(chp);
return ret;
#else
return -ENOSYS;
#endif
}
static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
{
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;
if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
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);
pr_debug("%s rptr 0x%x\n", __func__, chp->cq.rptr);
err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
spin_unlock_irqrestore(&chp->lock, flag);
if (err < 0)
pr_err("Error %d rearming CQID 0x%x\n", err, chp->cq.cqid);
if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
err = 0;
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;
u64 addr;
pr_debug("%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_p = &(to_iwch_dev(context->device)->rdev);
ucontext = to_iwch_ucontext(context);
mm = remove_mmap(ucontext, key, len);
if (!mm)
return -EINVAL;
addr = mm->addr;
kfree(mm);
if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
(addr < (rdev_p->rnic_info.udbell_physbase +
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,
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 void iwch_deallocate_pd(struct ib_pd *pd)
{
struct iwch_dev *rhp;
struct iwch_pd *php;
php = to_iwch_pd(pd);
rhp = php->rhp;
pr_debug("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
}
static int iwch_allocate_pd(struct ib_pd *pd, struct ib_ucontext *context,
struct ib_udata *udata)
{
struct iwch_pd *php = to_iwch_pd(pd);
struct ib_device *ibdev = pd->device;
u32 pdid;
struct iwch_dev *rhp;
pr_debug("%s ibdev %p\n", __func__, ibdev);
rhp = (struct iwch_dev *) ibdev;
pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
if (!pdid)
return -EINVAL;
php->pdid = pdid;
php->rhp = rhp;
if (context) {
struct iwch_alloc_pd_resp resp = {.pdid = php->pdid};
if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
iwch_deallocate_pd(&php->ibpd);
return -EFAULT;
}
}
pr_debug("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
return 0;
}
static int iwch_dereg_mr(struct ib_mr *ib_mr)
{
struct iwch_dev *rhp;
struct iwch_mr *mhp;
u32 mmid;
pr_debug("%s ib_mr %p\n", __func__, ib_mr);
mhp = to_iwch_mr(ib_mr);
kfree(mhp->pages);
rhp = mhp->rhp;
mmid = mhp->attr.stag >> 8;
cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
mhp->attr.pbl_addr);
iwch_free_pbl(mhp);
remove_handle(rhp, &rhp->mmidr, mmid);
if (mhp->kva)
kfree((void *) (unsigned long) mhp->kva);
if (mhp->umem)
ib_umem_release(mhp->umem);
pr_debug("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
kfree(mhp);
return 0;
}
static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
{
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;
struct iwch_mr *mhp;
__be64 *page_list;
int shift = 26, npages, ret, i;
pr_debug("%s ib_pd %p\n", __func__, pd);
/*
* T3 only supports 32 bits of size.
*/
if (sizeof(phys_addr_t) > 4) {
pr_warn_once("Cannot support dma_mrs on this platform\n");
return ERR_PTR(-ENOTSUPP);
}
mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
if (!mhp)
return ERR_PTR(-ENOMEM);
mhp->rhp = rhp;
npages = (total_size + (1ULL << shift) - 1) >> shift;
if (!npages) {
ret = -EINVAL;
goto err;
}
page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
if (!page_list) {
ret = -ENOMEM;
goto err;
}
for (i = 0; i < npages; i++)
page_list[i] = cpu_to_be64((u64)i << shift);
pr_debug("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
__func__, mask, shift, total_size, npages);
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;
mhp->attr.pdid = php->pdid;
mhp->attr.zbva = 0;
mhp->attr.perms = iwch_ib_to_tpt_access(acc);
mhp->attr.va_fbo = 0;
mhp->attr.page_size = shift - 12;
mhp->attr.len = (u32) total_size;
mhp->attr.pbl_size = npages;
ret = iwch_register_mem(rhp, php, mhp, shift);
if (ret)
goto err_pbl;
return &mhp->ibmr;
err_pbl:
iwch_free_pbl(mhp);
err:
kfree(mhp);
return ERR_PTR(ret);
}
static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u64 virt, int acc, struct ib_udata *udata)
{
__be64 *pages;
int shift, n, i;
int err = 0;
struct iwch_dev *rhp;
struct iwch_pd *php;
struct iwch_mr *mhp;
struct iwch_reg_user_mr_resp uresp;
struct sg_dma_page_iter sg_iter;
pr_debug("%s ib_pd %p\n", __func__, pd);
php = to_iwch_pd(pd);
rhp = php->rhp;
mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
if (!mhp)
return ERR_PTR(-ENOMEM);
mhp->rhp = rhp;
mhp->umem = ib_umem_get(udata, start, length, acc, 0);
if (IS_ERR(mhp->umem)) {
err = PTR_ERR(mhp->umem);
kfree(mhp);
return ERR_PTR(err);
}
shift = PAGE_SHIFT;
n = mhp->umem->nmap;
err = iwch_alloc_pbl(mhp, n);
if (err)
goto err;
pages = (__be64 *) __get_free_page(GFP_KERNEL);
if (!pages) {
err = -ENOMEM;
goto err_pbl;
}
i = n = 0;
for_each_sg_dma_page(mhp->umem->sg_head.sgl, &sg_iter, mhp->umem->nmap, 0) {
pages[i++] = cpu_to_be64(sg_page_iter_dma_address(&sg_iter));
if (i == PAGE_SIZE / sizeof *pages) {
err = iwch_write_pbl(mhp, pages, i, n);
if (err)
goto pbl_done;
n += i;
i = 0;
}
}
if (i)
err = iwch_write_pbl(mhp, pages, i, n);
pbl_done:
free_page((unsigned long) pages);
if (err)
goto err_pbl;
mhp->attr.pdid = php->pdid;
mhp->attr.zbva = 0;
mhp->attr.perms = iwch_ib_to_tpt_access(acc);
mhp->attr.va_fbo = virt;
mhp->attr.page_size = shift - 12;
mhp->attr.len = (u32) length;
err = iwch_register_mem(rhp, php, mhp, shift);
if (err)
goto err_pbl;
if (udata && !t3a_device(rhp)) {
uresp.pbl_addr = (mhp->attr.pbl_addr -
rhp->rdev.rnic_info.pbl_base) >> 3;
pr_debug("%s user resp pbl_addr 0x%x\n", __func__,
uresp.pbl_addr);
if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
iwch_dereg_mr(&mhp->ibmr);
err = -EFAULT;
goto err;
}
}
return &mhp->ibmr;
err_pbl:
iwch_free_pbl(mhp);
err:
ib_umem_release(mhp->umem);
kfree(mhp);
return ERR_PTR(err);
}
static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
struct ib_udata *udata)
{
struct iwch_dev *rhp;
struct iwch_pd *php;
struct iwch_mw *mhp;
u32 mmid;
u32 stag = 0;
int ret;
if (type != IB_MW_TYPE_1)
return ERR_PTR(-EINVAL);
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;
mhp->ibmw.rkey = stag;
if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
kfree(mhp);
return ERR_PTR(-ENOMEM);
}
pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
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);
pr_debug("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
kfree(mhp);
return 0;
}
static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg)
{
struct iwch_dev *rhp;
struct iwch_pd *php;
struct iwch_mr *mhp;
u32 mmid;
u32 stag = 0;
int ret = -ENOMEM;
if (mr_type != IB_MR_TYPE_MEM_REG ||
max_num_sg > T3_MAX_FASTREG_DEPTH)
return ERR_PTR(-EINVAL);
php = to_iwch_pd(pd);
rhp = php->rhp;
mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
if (!mhp)
goto err;
mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
if (!mhp->pages)
goto pl_err;
mhp->rhp = rhp;
ret = iwch_alloc_pbl(mhp, max_num_sg);
if (ret)
goto err1;
mhp->attr.pbl_size = max_num_sg;
ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
mhp->attr.pbl_size, mhp->attr.pbl_addr);
if (ret)
goto err2;
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;
ret = insert_handle(rhp, &rhp->mmidr, mhp, mmid);
if (ret)
goto err3;
pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
return &(mhp->ibmr);
err3:
cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
mhp->attr.pbl_addr);
err2:
iwch_free_pbl(mhp);
err1:
kfree(mhp->pages);
pl_err:
kfree(mhp);
err:
return ERR_PTR(ret);
}
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;
}
static int iwch_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
int sg_nents, unsigned int *sg_offset)
{
struct iwch_mr *mhp = to_iwch_mr(ibmr);
mhp->npages = 0;
return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, iwch_set_page);
}
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;
attrs.next_state = IWCH_QP_STATE_ERROR;
iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
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);
pr_debug("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
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;
pr_debug("%s ib_pd %p\n", __func__, pd);
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);
if (attrs->cap.max_inline_data > T3_MAX_INLINE)
return ERR_PTR(-EINVAL);
/*
* 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);
/*
* Kernel users need more wq space for fastreg WRs which can take
* 2 WR fragments.
*/
ucontext = rdma_udata_to_drv_context(udata, struct iwch_ucontext,
ibucontext);
if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
wqsize = roundup_pow_of_two(rqsize +
roundup_pow_of_two(attrs->cap.max_send_wr * 2));
pr_debug("%s wqsize %d sqsize %d rqsize %d\n", __func__,
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);
}
attrs->cap.max_recv_wr = rqsize - 1;
attrs->cap.max_send_wr = sqsize;
attrs->cap.max_inline_data = T3_MAX_INLINE;
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);
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);
}
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;
pr_debug("%s sq_num_entries %d, rq_num_entries %d qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
__func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
qhp->wq.qpid, qhp, (unsigned long long)qhp->wq.dma_addr,
1 << qhp->wq.size_log2, qhp->wq.rq_addr);
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;
pr_debug("%s ib_qp %p\n", __func__, ibqp);
/* 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)
{
pr_debug("%s ib_qp %p\n", __func__, qp);
atomic_inc(&(to_iwch_qp(qp)->refcnt));
}
void iwch_qp_rem_ref(struct ib_qp *qp)
{
pr_debug("%s ib_qp %p\n", __func__, qp);
if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
wake_up(&(to_iwch_qp(qp)->wait));
}
static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
{
pr_debug("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
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)
{
pr_debug("%s ibdev %p\n", __func__, ibdev);
*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;
pr_debug("%s ibdev %p, port %d, index %d, gid %p\n",
__func__, ibdev, port, index, gid);
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;
}
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);
}
static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
struct ib_udata *uhw)
{
struct iwch_dev *dev;
pr_debug("%s ibdev %p\n", __func__, ibdev);
if (uhw->inlen || uhw->outlen)
return -EINVAL;
dev = to_iwch_dev(ibdev);
memset(props, 0, sizeof *props);
memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
props->hw_ver = dev->rdev.t3cdev_p->type;
props->fw_ver = fw_vers_string_to_u64(dev);
props->device_cap_flags = dev->device_cap_flags;
props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
props->max_mr_size = dev->attr.max_mr_size;
props->max_qp = dev->attr.max_qps;
props->max_qp_wr = dev->attr.max_wrs;
props->max_send_sge = dev->attr.max_sge_per_wr;
props->max_recv_sge = dev->attr.max_sge_per_wr;
props->max_sge_rd = 1;
props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
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;
props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
return 0;
}
static int iwch_query_port(struct ib_device *ibdev,
u8 port, struct ib_port_attr *props)
{
struct iwch_dev *dev;
struct net_device *netdev;
struct in_device *inetdev;
pr_debug("%s ibdev %p\n", __func__, ibdev);
dev = to_iwch_dev(ibdev);
netdev = dev->rdev.port_info.lldevs[port-1];
/* props being zeroed by the caller, avoid zeroing it here */
props->max_mtu = IB_MTU_4096;
props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
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 = IB_SPEED_DDR;
props->max_msg_sz = -1;
return 0;
}
static ssize_t hw_rev_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iwch_dev *iwch_dev =
rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
pr_debug("%s dev 0x%p\n", __func__, dev);
return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
}
static DEVICE_ATTR_RO(hw_rev);
static ssize_t hca_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iwch_dev *iwch_dev =
rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
struct ethtool_drvinfo info;
struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
pr_debug("%s dev 0x%p\n", __func__, dev);
lldev->ethtool_ops->get_drvinfo(lldev, &info);
return sprintf(buf, "%s\n", info.driver);
}
static DEVICE_ATTR_RO(hca_type);
static ssize_t board_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iwch_dev *iwch_dev =
rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
pr_debug("%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);
}
static DEVICE_ATTR_RO(board_id);
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)
{
struct iwch_dev *dev;
struct tp_mib_stats m;
int ret;
if (port != 0 || !stats)
return -ENOSYS;
pr_debug("%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;
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;
}
static struct attribute *iwch_class_attributes[] = {
&dev_attr_hw_rev.attr,
&dev_attr_hca_type.attr,
&dev_attr_board_id.attr,
NULL
};
static const struct attribute_group iwch_attr_group = {
.attrs = iwch_class_attributes,
};
static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
int err;
immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
err = ib_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;
return 0;
}
static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str)
{
struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
struct ethtool_drvinfo info;
struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
pr_debug("%s dev 0x%p\n", __func__, iwch_dev);
lldev->ethtool_ops->get_drvinfo(lldev, &info);
snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
}
static const struct ib_device_ops iwch_dev_ops = {
.alloc_hw_stats = iwch_alloc_stats,
.alloc_mr = iwch_alloc_mr,
.alloc_mw = iwch_alloc_mw,
.alloc_pd = iwch_allocate_pd,
.alloc_ucontext = iwch_alloc_ucontext,
.create_cq = iwch_create_cq,
.create_qp = iwch_create_qp,
.dealloc_mw = iwch_dealloc_mw,
.dealloc_pd = iwch_deallocate_pd,
.dealloc_ucontext = iwch_dealloc_ucontext,
.dereg_mr = iwch_dereg_mr,
.destroy_cq = iwch_destroy_cq,
.destroy_qp = iwch_destroy_qp,
.get_dev_fw_str = get_dev_fw_ver_str,
.get_dma_mr = iwch_get_dma_mr,
.get_hw_stats = iwch_get_mib,
.get_port_immutable = iwch_port_immutable,
.map_mr_sg = iwch_map_mr_sg,
.mmap = iwch_mmap,
.modify_qp = iwch_ib_modify_qp,
.poll_cq = iwch_poll_cq,
.post_recv = iwch_post_receive,
.post_send = iwch_post_send,
.query_device = iwch_query_device,
.query_gid = iwch_query_gid,
.query_pkey = iwch_query_pkey,
.query_port = iwch_query_port,
.reg_user_mr = iwch_reg_user_mr,
.req_notify_cq = iwch_arm_cq,
.resize_cq = iwch_resize_cq,
INIT_RDMA_OBJ_SIZE(ib_pd, iwch_pd, ibpd),
INIT_RDMA_OBJ_SIZE(ib_ucontext, iwch_ucontext, ibucontext),
};
int iwch_register_device(struct iwch_dev *dev)
{
int ret;
pr_debug("%s iwch_dev %p\n", __func__, dev);
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;
dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
IB_DEVICE_MEM_WINDOW |
IB_DEVICE_MEM_MGT_EXTENSIONS;
/* cxgb3 supports STag 0. */
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;
BUILD_BUG_ON(sizeof(IWCH_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
dev->ibdev.num_comp_vectors = 1;
dev->ibdev.dev.parent = &dev->rdev.rnic_info.pdev->dev;
dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
dev->ibdev.iwcm = kzalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
if (!dev->ibdev.iwcm)
return -ENOMEM;
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;
memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
sizeof(dev->ibdev.iwcm->ifname));
dev->ibdev.driver_id = RDMA_DRIVER_CXGB3;
rdma_set_device_sysfs_group(&dev->ibdev, &iwch_attr_group);
ib_set_device_ops(&dev->ibdev, &iwch_dev_ops);
ret = ib_register_device(&dev->ibdev, "cxgb3_%d");
if (ret)
kfree(dev->ibdev.iwcm);
return ret;
}
void iwch_unregister_device(struct iwch_dev *dev)
{
pr_debug("%s iwch_dev %p\n", __func__, dev);
ib_unregister_device(&dev->ibdev);
kfree(dev->ibdev.iwcm);
return;
}
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