--- /dev/null
+/*
+ * 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.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 "cxio_hal.h"
+#include "iwch.h"
+#include "iwch_provider.h"
+#include "iwch_cm.h"
+#include "iwch_user.h"
+#include "common.h"
+
+static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
+ struct ib_ah_attr *ah_attr)
+{
+ 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,
+ struct ib_wc *in_wc,
+ struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad)
+{
+ 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;
+
+ PDBG("%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);
+ 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);
+
+ PDBG("%s ibdev %p\n", __func__, ibdev);
+ 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;
+
+ PDBG("%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, int entries, int vector,
+ struct ib_ucontext *ib_context,
+ struct ib_udata *udata)
+{
+ 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;
+
+ PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
+ 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++)
+ 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;
+ 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);
+ }
+ 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;
+
+ PDBG("%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) {
+ printk(KERN_ERR MOD "%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);
+ PDBG("%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)
+ printk(KERN_ERR MOD "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;
+
+ PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
+ key, len);
+
+ if (vma->vm_start & (PAGE_SIZE-1)) {
+ return -EINVAL;
+ }
+
+ rdev_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 int iwch_deallocate_pd(struct ib_pd *pd)
+{
+ struct iwch_dev *rhp;
+ struct iwch_pd *php;
+
+ php = to_iwch_pd(pd);
+ rhp = php->rhp;
+ PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
+ 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;
+
+ PDBG("%s ibdev %p\n", __func__, ibdev);
+ 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);
+ }
+ }
+ PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
+ return &php->ibpd;
+}
+
+static int iwch_dereg_mr(struct ib_mr *ib_mr)
+{
+ struct iwch_dev *rhp;
+ struct iwch_mr *mhp;
+ u32 mmid;
+
+ PDBG("%s ib_mr %p\n", __func__, ib_mr);
+ /* There can be no memory windows */
+ if (atomic_read(&ib_mr->usecnt))
+ return -EINVAL;
+
+ mhp = to_iwch_mr(ib_mr);
+ 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);
+ PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
+ kfree(mhp);
+ return 0;
+}
+
+static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
+ struct ib_phys_buf *buffer_list,
+ int num_phys_buf,
+ int acc,
+ u64 *iova_start)
+{
+ __be64 *page_list;
+ int shift;
+ u64 total_size;
+ int npages;
+ struct iwch_dev *rhp;
+ struct iwch_pd *php;
+ struct iwch_mr *mhp;
+ int ret;
+
+ PDBG("%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;
+
+ /* First check that we have enough alignment */
+ if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (num_phys_buf > 1 &&
+ ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
+ &total_size, &npages, &shift, &page_list);
+ if (ret)
+ goto err;
+
+ 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 = *iova_start;
+ 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 int iwch_reregister_phys_mem(struct ib_mr *mr,
+ int mr_rereg_mask,
+ struct ib_pd *pd,
+ struct ib_phys_buf *buffer_list,
+ int num_phys_buf,
+ int acc, u64 * iova_start)
+{
+
+ struct iwch_mr mh, *mhp;
+ struct iwch_pd *php;
+ struct iwch_dev *rhp;
+ __be64 *page_list = NULL;
+ int shift = 0;
+ u64 total_size;
+ int npages = 0;
+ int ret;
+
+ PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
+
+ /* There can be no memory windows */
+ if (atomic_read(&mr->usecnt))
+ return -EINVAL;
+
+ mhp = to_iwch_mr(mr);
+ rhp = mhp->rhp;
+ php = to_iwch_pd(mr->pd);
+
+ /* make sure we are on the same adapter */
+ if (rhp != php->rhp)
+ return -EINVAL;
+
+ memcpy(&mh, mhp, sizeof *mhp);
+
+ if (mr_rereg_mask & IB_MR_REREG_PD)
+ php = to_iwch_pd(pd);
+ if (mr_rereg_mask & IB_MR_REREG_ACCESS)
+ mh.attr.perms = iwch_ib_to_tpt_access(acc);
+ if (mr_rereg_mask & IB_MR_REREG_TRANS) {
+ ret = build_phys_page_list(buffer_list, num_phys_buf,
+ iova_start,
+ &total_size, &npages,
+ &shift, &page_list);
+ if (ret)
+ return ret;
+ }
+
+ ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
+ kfree(page_list);
+ if (ret) {
+ return ret;
+ }
+ if (mr_rereg_mask & IB_MR_REREG_PD)
+ mhp->attr.pdid = php->pdid;
+ if (mr_rereg_mask & IB_MR_REREG_ACCESS)
+ mhp->attr.perms = iwch_ib_to_tpt_access(acc);
+ if (mr_rereg_mask & IB_MR_REREG_TRANS) {
+ mhp->attr.zbva = 0;
+ mhp->attr.va_fbo = *iova_start;
+ mhp->attr.page_size = shift - 12;
+ mhp->attr.len = (u32) total_size;
+ mhp->attr.pbl_size = npages;
+ }
+
+ return 0;
+}
+
+
+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, len;
+ int i, k, entry;
+ int err = 0;
+ struct iwch_dev *rhp;
+ struct iwch_pd *php;
+ struct iwch_mr *mhp;
+ struct iwch_reg_user_mr_resp uresp;
+ struct scatterlist *sg;
+ PDBG("%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(pd->uobject->context, start, length, acc, 0);
+ if (IS_ERR(mhp->umem)) {
+ err = PTR_ERR(mhp->umem);
+ kfree(mhp);
+ return ERR_PTR(err);
+ }
+
+ shift = ffs(mhp->umem->page_size) - 1;
+
+ 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(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
+ len = sg_dma_len(sg) >> shift;
+ for (k = 0; k < len; ++k) {
+ pages[i++] = cpu_to_be64(sg_dma_address(sg) +
+ mhp->umem->page_size * k);
+ 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;
+ PDBG("%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_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ struct ib_phys_buf bl;
+ u64 kva;
+ struct ib_mr *ibmr;
+
+ PDBG("%s ib_pd %p\n", __func__, pd);
+
+ /*
+ * T3 only supports 32 bits of size.
+ */
+ bl.size = 0xffffffff;
+ bl.addr = 0;
+ kva = 0;
+ ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
+ return ibmr;
+}
+
+static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
+{
+ 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);
+ }
+ PDBG("%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);
+ PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
+ kfree(mhp);
+ return 0;
+}
+
+static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
+{
+ struct iwch_dev *rhp;
+ struct iwch_pd *php;
+ struct iwch_mr *mhp;
+ u32 mmid;
+ u32 stag = 0;
+ int ret = 0;
+
+ php = to_iwch_pd(pd);
+ rhp = php->rhp;
+ mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
+ if (!mhp)
+ goto err;
+
+ mhp->rhp = rhp;
+ ret = iwch_alloc_pbl(mhp, pbl_depth);
+ if (ret)
+ goto err1;
+ mhp->attr.pbl_size = pbl_depth;
+ 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;
+ if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
+ goto err3;
+
+ PDBG("%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);
+err:
+ return ERR_PTR(ret);
+}
+
+static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
+ struct ib_device *device,
+ int page_list_len)
+{
+ struct ib_fast_reg_page_list *page_list;
+
+ page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
+ GFP_KERNEL);
+ if (!page_list)
+ return ERR_PTR(-ENOMEM);
+
+ page_list->page_list = (u64 *)(page_list + 1);
+ page_list->max_page_list_len = page_list_len;
+
+ return page_list;
+}
+
+static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
+{
+ kfree(page_list);
+}
+
+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);
+
+ PDBG("%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;
+
+ PDBG("%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 = 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));
+ PDBG("%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;
+ init_timer(&(qhp->timer));
+ PDBG("%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;
+
+ PDBG("%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)
+{
+ PDBG("%s ib_qp %p\n", __func__, qp);
+ atomic_inc(&(to_iwch_qp(qp)->refcnt));
+}
+
+void iwch_qp_rem_ref(struct ib_qp *qp)
+{
+ PDBG("%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)
+{
+ PDBG("%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)
+{
+ PDBG("%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;
+
+ PDBG("%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 iwch_dev *dev;
+ PDBG("%s ibdev %p\n", __func__, ibdev);
+
+ 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_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;
+
+ PDBG("%s ibdev %p\n", __func__, ibdev);
+
+ dev = to_iwch_dev(ibdev);
+ netdev = dev->rdev.port_info.lldevs[port-1];
+
+ memset(props, 0, sizeof(struct ib_port_attr));
+ props->max_mtu = IB_MTU_4096;
+ if (netdev->mtu >= 4096)
+ props->active_mtu = IB_MTU_4096;
+ else if (netdev->mtu >= 2048)
+ props->active_mtu = IB_MTU_2048;
+ else if (netdev->mtu >= 1024)
+ props->active_mtu = IB_MTU_1024;
+ else if (netdev->mtu >= 512)
+ props->active_mtu = IB_MTU_512;
+ else
+ props->active_mtu = IB_MTU_256;
+
+ if (!netif_carrier_ok(netdev))
+ props->state = IB_PORT_DOWN;
+ else {
+ inetdev = in_dev_get(netdev);
+ if (inetdev) {
+ if (inetdev->ifa_list)
+ props->state = IB_PORT_ACTIVE;
+ else
+ props->state = IB_PORT_INIT;
+ in_dev_put(inetdev);
+ } else
+ props->state = IB_PORT_INIT;
+ }
+
+ props->port_cap_flags =
+ IB_PORT_CM_SUP |
+ IB_PORT_SNMP_TUNNEL_SUP |
+ IB_PORT_REINIT_SUP |
+ IB_PORT_DEVICE_MGMT_SUP |
+ IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
+ props->gid_tbl_len = 1;
+ props->pkey_tbl_len = 1;
+ props->active_width = 2;
+ props->active_speed = IB_SPEED_DDR;
+ props->max_msg_sz = -1;
+
+ return 0;
+}
+
+static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ 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);
+}
+
+static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
+ ibdev.dev);
+ struct ethtool_drvinfo info;
+ struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
+
+ PDBG("%s dev 0x%p\n", __func__, dev);
+ lldev->ethtool_ops->get_drvinfo(lldev, &info);
+ return sprintf(buf, "%s\n", info.fw_version);
+}
+
+static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
+ ibdev.dev);
+ struct ethtool_drvinfo info;
+ struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
+
+ PDBG("%s dev 0x%p\n", __func__, dev);
+ lldev->ethtool_ops->get_drvinfo(lldev, &info);
+ return sprintf(buf, "%s\n", info.driver);
+}
+
+static ssize_t show_board(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct 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);
+}
+
+static int iwch_get_mib(struct ib_device *ibdev,
+ union rdma_protocol_stats *stats)
+{
+ struct iwch_dev *dev;
+ struct tp_mib_stats m;
+ int ret;
+
+ 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;
+
+ memset(stats, 0, sizeof *stats);
+ stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
+ m.ipInReceive_lo;
+ stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
+ m.ipInHdrErrors_lo;
+ stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
+ m.ipInAddrErrors_lo;
+ stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
+ m.ipInUnknownProtos_lo;
+ stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
+ m.ipInDiscards_lo;
+ stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
+ m.ipInDelivers_lo;
+ stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
+ m.ipOutRequests_lo;
+ stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
+ m.ipOutDiscards_lo;
+ stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
+ m.ipOutNoRoutes_lo;
+ stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
+ stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
+ stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
+ stats->iw.ipReasmFails = (u64) m.ipReasmFails;
+ stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
+ stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
+ stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
+ stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
+ stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
+ stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
+ stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
+ m.tcpInSegs_lo;
+ stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
+ m.tcpOutSegs_lo;
+ stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
+ m.tcpRetransSeg_lo;
+ stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
+ m.tcpInErrs_lo;
+ stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
+ stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
+ return 0;
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
+
+static struct device_attribute *iwch_class_attributes[] = {
+ &dev_attr_hw_rev,
+ &dev_attr_fw_ver,
+ &dev_attr_hca_type,
+ &dev_attr_board_id,
+};
+
+int iwch_register_device(struct iwch_dev *dev)
+{
+ int ret;
+ int i;
+
+ PDBG("%s iwch_dev %p\n", __func__, dev);
+ 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;
+ 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;
+ 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.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_phys_mr = iwch_register_phys_mem;
+ dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
+ 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.bind_mw = iwch_bind_mw;
+ dev->ibdev.dealloc_mw = iwch_dealloc_mw;
+ dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
+ dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
+ dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
+ 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;
+ dev->ibdev.get_protocol_stats = iwch_get_mib;
+ dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
+
+ dev->ibdev.iwcm = kmalloc(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;
+
+ ret = ib_register_device(&dev->ibdev, NULL);
+ if (ret)
+ goto bail1;
+
+ for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
+ ret = device_create_file(&dev->ibdev.dev,
+ iwch_class_attributes[i]);
+ if (ret) {
+ goto bail2;
+ }
+ }
+ return 0;
+bail2:
+ ib_unregister_device(&dev->ibdev);
+bail1:
+ kfree(dev->ibdev.iwcm);
+ return ret;
+}
+
+void iwch_unregister_device(struct iwch_dev *dev)
+{
+ int i;
+
+ PDBG("%s iwch_dev %p\n", __func__, dev);
+ for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
+ device_remove_file(&dev->ibdev.dev,
+ iwch_class_attributes[i]);
+ ib_unregister_device(&dev->ibdev);
+ kfree(dev->ibdev.iwcm);
+ return;
+}
Code Review / kvmfornfv.git / blobdiff