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path: root/drivers/infiniband/hw/nes/nes_verbs.c
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Diffstat (limited to 'drivers/infiniband/hw/nes/nes_verbs.c')
-rw-r--r--drivers/infiniband/hw/nes/nes_verbs.c3917
1 files changed, 3917 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
new file mode 100644
index 00000000000..ffd4b425567
--- /dev/null
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -0,0 +1,3917 @@
+/*
+ * Copyright (c) 2006 - 2008 NetEffect, 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/random.h>
+#include <linux/highmem.h>
+#include <asm/byteorder.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/iw_cm.h>
+#include <rdma/ib_user_verbs.h>
+
+#include "nes.h"
+
+#include <rdma/ib_umem.h>
+
+atomic_t mod_qp_timouts;
+atomic_t qps_created;
+atomic_t sw_qps_destroyed;
+
+
+/**
+ * nes_alloc_mw
+ */
+static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
+ unsigned long flags;
+ struct nes_pd *nespd = to_nespd(ibpd);
+ struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_cqp_request *cqp_request;
+ struct nes_mr *nesmr;
+ struct ib_mw *ibmw;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ int ret;
+ u32 stag;
+ u32 stag_index = 0;
+ u32 next_stag_index = 0;
+ u32 driver_key = 0;
+ u8 stag_key = 0;
+
+ get_random_bytes(&next_stag_index, sizeof(next_stag_index));
+ stag_key = (u8)next_stag_index;
+
+ driver_key = 0;
+
+ next_stag_index >>= 8;
+ next_stag_index %= nesadapter->max_mr;
+
+ ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
+ nesadapter->max_mr, &stag_index, &next_stag_index);
+ if (ret) {
+ return ERR_PTR(ret);
+ }
+
+ nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
+ if (!nesmr) {
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ stag = stag_index << 8;
+ stag |= driver_key;
+ stag += (u32)stag_key;
+
+ nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
+ stag, stag_index);
+
+ /* Register the region with the adapter */
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ kfree(nesmr);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
+ cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
+ NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
+ NES_CQP_STAG_REM_ACC_EN);
+
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ stag, ret, cqp_request->major_code, cqp_request->minor_code);
+ if ((!ret) || (cqp_request->major_code)) {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ kfree(nesmr);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ if (!ret) {
+ return ERR_PTR(-ETIME);
+ } else {
+ return ERR_PTR(-ENOMEM);
+ }
+ } else {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ }
+
+ nesmr->ibmw.rkey = stag;
+ nesmr->mode = IWNES_MEMREG_TYPE_MW;
+ ibmw = &nesmr->ibmw;
+ nesmr->pbl_4k = 0;
+ nesmr->pbls_used = 0;
+
+ return ibmw;
+}
+
+
+/**
+ * nes_dealloc_mw
+ */
+static int nes_dealloc_mw(struct ib_mw *ibmw)
+{
+ struct nes_mr *nesmr = to_nesmw(ibmw);
+ struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_cqp_request *cqp_request;
+ int err = 0;
+ unsigned long flags;
+ int ret;
+
+ /* Deallocate the window with the adapter */
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
+ return -ENOMEM;
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
+ ibmw->rkey);
+ ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ ret, cqp_request->major_code, cqp_request->minor_code);
+ if ((!ret) || (cqp_request->major_code)) {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ if (!ret) {
+ err = -ETIME;
+ } else {
+ err = -EIO;
+ }
+ } else {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ }
+
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ (ibmw->rkey & 0x0fffff00) >> 8);
+ kfree(nesmr);
+
+ return err;
+}
+
+
+/**
+ * nes_bind_mw
+ */
+static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
+ struct ib_mw_bind *ibmw_bind)
+{
+ u64 u64temp;
+ struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ /* struct nes_mr *nesmr = to_nesmw(ibmw); */
+ struct nes_qp *nesqp = to_nesqp(ibqp);
+ struct nes_hw_qp_wqe *wqe;
+ unsigned long flags = 0;
+ u32 head;
+ u32 wqe_misc = 0;
+ u32 qsize;
+
+ if (nesqp->ibqp_state > IB_QPS_RTS)
+ return -EINVAL;
+
+ spin_lock_irqsave(&nesqp->lock, flags);
+
+ head = nesqp->hwqp.sq_head;
+ qsize = nesqp->hwqp.sq_tail;
+
+ /* Check for SQ overflow */
+ if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
+ spin_unlock_irqrestore(&nesqp->lock, flags);
+ return -EINVAL;
+ }
+
+ wqe = &nesqp->hwqp.sq_vbase[head];
+ /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
+ nes_fill_init_qp_wqe(wqe, nesqp, head);
+ u64temp = ibmw_bind->wr_id;
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
+ wqe_misc = NES_IWARP_SQ_OP_BIND;
+
+ wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
+
+ if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
+ wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
+
+ if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
+ wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
+ }
+ if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
+ wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
+ }
+
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
+ ibmw_bind->length);
+ wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
+ u64temp = (u64)ibmw_bind->addr;
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
+
+ head++;
+ if (head >= qsize)
+ head = 0;
+
+ nesqp->hwqp.sq_head = head;
+ barrier();
+
+ nes_write32(nesdev->regs+NES_WQE_ALLOC,
+ (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
+
+ spin_unlock_irqrestore(&nesqp->lock, flags);
+
+ return 0;
+}
+
+
+/**
+ * nes_alloc_fmr
+ */
+static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
+ int ibmr_access_flags,
+ struct ib_fmr_attr *ibfmr_attr)
+{
+ unsigned long flags;
+ struct nes_pd *nespd = to_nespd(ibpd);
+ struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_fmr *nesfmr;
+ struct nes_cqp_request *cqp_request;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ int ret;
+ u32 stag;
+ u32 stag_index = 0;
+ u32 next_stag_index = 0;
+ u32 driver_key = 0;
+ u32 opcode = 0;
+ u8 stag_key = 0;
+ int i=0;
+ struct nes_vpbl vpbl;
+
+ get_random_bytes(&next_stag_index, sizeof(next_stag_index));
+ stag_key = (u8)next_stag_index;
+
+ driver_key = 0;
+
+ next_stag_index >>= 8;
+ next_stag_index %= nesadapter->max_mr;
+
+ ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
+ nesadapter->max_mr, &stag_index, &next_stag_index);
+ if (ret) {
+ goto failed_resource_alloc;
+ }
+
+ nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
+ if (!nesfmr) {
+ ret = -ENOMEM;
+ goto failed_fmr_alloc;
+ }
+
+ nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
+ if (ibfmr_attr->max_pages == 1) {
+ /* use zero length PBL */
+ nesfmr->nesmr.pbl_4k = 0;
+ nesfmr->nesmr.pbls_used = 0;
+ } else if (ibfmr_attr->max_pages <= 32) {
+ /* use PBL 256 */
+ nesfmr->nesmr.pbl_4k = 0;
+ nesfmr->nesmr.pbls_used = 1;
+ } else if (ibfmr_attr->max_pages <= 512) {
+ /* use 4K PBLs */
+ nesfmr->nesmr.pbl_4k = 1;
+ nesfmr->nesmr.pbls_used = 1;
+ } else {
+ /* use two level 4K PBLs */
+ /* add support for two level 256B PBLs */
+ nesfmr->nesmr.pbl_4k = 1;
+ nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
+ ((ibfmr_attr->max_pages & 511) ? 1 : 0);
+ }
+ /* Register the region with the adapter */
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+
+ /* track PBL resources */
+ if (nesfmr->nesmr.pbls_used != 0) {
+ if (nesfmr->nesmr.pbl_4k) {
+ if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ ret = -ENOMEM;
+ goto failed_vpbl_alloc;
+ } else {
+ nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
+ }
+ } else {
+ if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ ret = -ENOMEM;
+ goto failed_vpbl_alloc;
+ } else {
+ nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
+ }
+ }
+ }
+
+ /* one level pbl */
+ if (nesfmr->nesmr.pbls_used == 0) {
+ nesfmr->root_vpbl.pbl_vbase = NULL;
+ nes_debug(NES_DBG_MR, "zero level pbl \n");
+ } else if (nesfmr->nesmr.pbls_used == 1) {
+ /* can change it to kmalloc & dma_map_single */
+ nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
+ &nesfmr->root_vpbl.pbl_pbase);
+ if (!nesfmr->root_vpbl.pbl_vbase) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ ret = -ENOMEM;
+ goto failed_vpbl_alloc;
+ }
+ nesfmr->leaf_pbl_cnt = 0;
+ nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
+ nesfmr->root_vpbl.pbl_vbase);
+ }
+ /* two level pbl */
+ else {
+ nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
+ &nesfmr->root_vpbl.pbl_pbase);
+ if (!nesfmr->root_vpbl.pbl_vbase) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ ret = -ENOMEM;
+ goto failed_vpbl_alloc;
+ }
+
+ nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
+ if (!nesfmr->root_vpbl.leaf_vpbl) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ ret = -ENOMEM;
+ goto failed_leaf_vpbl_alloc;
+ }
+
+ nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
+ nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
+ " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
+ nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
+
+ for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
+ nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
+
+ for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
+ vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
+ &vpbl.pbl_pbase);
+
+ if (!vpbl.pbl_vbase) {
+ ret = -ENOMEM;
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ goto failed_leaf_vpbl_pages_alloc;
+ }
+
+ nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
+ nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
+ nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
+
+ nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
+ nesfmr->root_vpbl.pbl_vbase[i].pa_low,
+ nesfmr->root_vpbl.pbl_vbase[i].pa_high,
+ &nesfmr->root_vpbl.leaf_vpbl[i]);
+ }
+ }
+ nesfmr->ib_qp = NULL;
+ nesfmr->access_rights =0;
+
+ stag = stag_index << 8;
+ stag |= driver_key;
+ stag += (u32)stag_key;
+
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
+ ret = -ENOMEM;
+ goto failed_leaf_vpbl_pages_alloc;
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
+ stag, stag_index);
+
+ opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
+
+ if (nesfmr->nesmr.pbl_4k == 1)
+ opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
+
+ if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
+ opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
+ NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
+ nesfmr->access_rights |=
+ NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
+ NES_CQP_STAG_REM_ACC_EN;
+ }
+
+ if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
+ opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
+ NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
+ nesfmr->access_rights |=
+ NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
+ NES_CQP_STAG_REM_ACC_EN;
+ }
+
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
+
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
+ cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
+ (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ stag, ret, cqp_request->major_code, cqp_request->minor_code);
+
+ if ((!ret) || (cqp_request->major_code)) {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ ret = (!ret) ? -ETIME : -EIO;
+ goto failed_leaf_vpbl_pages_alloc;
+ } else {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ }
+
+ nesfmr->nesmr.ibfmr.lkey = stag;
+ nesfmr->nesmr.ibfmr.rkey = stag;
+ nesfmr->attr = *ibfmr_attr;
+
+ return &nesfmr->nesmr.ibfmr;
+
+ failed_leaf_vpbl_pages_alloc:
+ /* unroll all allocated pages */
+ for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
+ if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
+ pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
+ nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
+ }
+ }
+ if (nesfmr->root_vpbl.leaf_vpbl)
+ kfree(nesfmr->root_vpbl.leaf_vpbl);
+
+ failed_leaf_vpbl_alloc:
+ if (nesfmr->leaf_pbl_cnt == 0) {
+ if (nesfmr->root_vpbl.pbl_vbase)
+ pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
+ nesfmr->root_vpbl.pbl_pbase);
+ } else
+ pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
+ nesfmr->root_vpbl.pbl_pbase);
+
+ failed_vpbl_alloc:
+ kfree(nesfmr);
+
+ failed_fmr_alloc:
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+
+ failed_resource_alloc:
+ return ERR_PTR(ret);
+}
+
+
+/**
+ * nes_dealloc_fmr
+ */
+static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
+{
+ struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
+ struct nes_fmr *nesfmr = to_nesfmr(nesmr);
+ struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_mr temp_nesmr = *nesmr;
+ int i = 0;
+
+ temp_nesmr.ibmw.device = ibfmr->device;
+ temp_nesmr.ibmw.pd = ibfmr->pd;
+ temp_nesmr.ibmw.rkey = ibfmr->rkey;
+ temp_nesmr.ibmw.uobject = NULL;
+
+ /* free the resources */
+ if (nesfmr->leaf_pbl_cnt == 0) {
+ /* single PBL case */
+ if (nesfmr->root_vpbl.pbl_vbase)
+ pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
+ nesfmr->root_vpbl.pbl_pbase);
+ } else {
+ for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
+ pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
+ nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
+ }
+ kfree(nesfmr->root_vpbl.leaf_vpbl);
+ pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
+ nesfmr->root_vpbl.pbl_pbase);
+ }
+
+ return nes_dealloc_mw(&temp_nesmr.ibmw);
+}
+
+
+/**
+ * nes_map_phys_fmr
+ */
+static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
+ int list_len, u64 iova)
+{
+ return 0;
+}
+
+
+/**
+ * nes_unmap_frm
+ */
+static int nes_unmap_fmr(struct list_head *ibfmr_list)
+{
+ return 0;
+}
+
+
+
+/**
+ * nes_query_device
+ */
+static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
+{
+ struct nes_vnic *nesvnic = to_nesvnic(ibdev);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_ib_device *nesibdev = nesvnic->nesibdev;
+
+ memset(props, 0, sizeof(*props));
+ memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
+
+ props->fw_ver = nesdev->nesadapter->fw_ver;
+ props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
+ props->vendor_id = nesdev->nesadapter->vendor_id;
+ props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
+ props->hw_ver = nesdev->nesadapter->hw_rev;
+ props->max_mr_size = 0x80000000;
+ props->max_qp = nesibdev->max_qp;
+ props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
+ props->max_sge = nesdev->nesadapter->max_sge;
+ props->max_cq = nesibdev->max_cq;
+ props->max_cqe = nesdev->nesadapter->max_cqe - 1;
+ props->max_mr = nesibdev->max_mr;
+ props->max_mw = nesibdev->max_mr;
+ props->max_pd = nesibdev->max_pd;
+ props->max_sge_rd = 1;
+ switch (nesdev->nesadapter->max_irrq_wr) {
+ case 0:
+ props->max_qp_rd_atom = 1;
+ break;
+ case 1:
+ props->max_qp_rd_atom = 4;
+ break;
+ case 2:
+ props->max_qp_rd_atom = 16;
+ break;
+ case 3:
+ props->max_qp_rd_atom = 32;
+ break;
+ default:
+ props->max_qp_rd_atom = 0;
+ }
+ props->max_qp_init_rd_atom = props->max_qp_wr;
+ props->atomic_cap = IB_ATOMIC_NONE;
+ props->max_map_per_fmr = 1;
+
+ return 0;
+}
+
+
+/**
+ * nes_query_port
+ */
+static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
+{
+ memset(props, 0, sizeof(*props));
+
+ props->max_mtu = IB_MTU_2048;
+ props->active_mtu = IB_MTU_2048;
+ props->lid = 1;
+ props->lmc = 0;
+ props->sm_lid = 0;
+ props->sm_sl = 0;
+ props->state = IB_PORT_ACTIVE;
+ props->phys_state = 0;
+ props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
+ IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
+ props->gid_tbl_len = 1;
+ props->pkey_tbl_len = 1;
+ props->qkey_viol_cntr = 0;
+ props->active_width = IB_WIDTH_4X;
+ props->active_speed = 1;
+ props->max_msg_sz = 0x80000000;
+
+ return 0;
+}
+
+
+/**
+ * nes_modify_port
+ */
+static int nes_modify_port(struct ib_device *ibdev, u8 port,
+ int port_modify_mask, struct ib_port_modify *props)
+{
+ return 0;
+}
+
+
+/**
+ * nes_query_pkey
+ */
+static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
+{
+ *pkey = 0;
+ return 0;
+}
+
+
+/**
+ * nes_query_gid
+ */
+static int nes_query_gid(struct ib_device *ibdev, u8 port,
+ int index, union ib_gid *gid)
+{
+ struct nes_vnic *nesvnic = to_nesvnic(ibdev);
+
+ memset(&(gid->raw[0]), 0, sizeof(gid->raw));
+ memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
+
+ return 0;
+}
+
+
+/**
+ * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
+ * of all objects associated with a particular user-mode client.
+ */
+static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct nes_vnic *nesvnic = to_nesvnic(ibdev);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_alloc_ucontext_req req;
+ struct nes_alloc_ucontext_resp uresp;
+ struct nes_ucontext *nes_ucontext;
+ struct nes_ib_device *nesibdev = nesvnic->nesibdev;
+
+
+ if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
+ printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
+ printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
+ req.userspace_ver, NES_ABI_USERSPACE_VER);
+ return ERR_PTR(-EINVAL);
+ }
+
+
+ memset(&uresp, 0, sizeof uresp);
+
+ uresp.max_qps = nesibdev->max_qp;
+ uresp.max_pds = nesibdev->max_pd;
+ uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
+ uresp.virtwq = nesadapter->virtwq;
+ uresp.kernel_ver = NES_ABI_KERNEL_VER;
+
+ nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
+ if (!nes_ucontext)
+ return ERR_PTR(-ENOMEM);
+
+ nes_ucontext->nesdev = nesdev;
+ nes_ucontext->mmap_wq_offset = uresp.max_pds;
+ nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
+ ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
+ PAGE_SIZE;
+
+
+ if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
+ kfree(nes_ucontext);
+ return ERR_PTR(-EFAULT);
+ }
+
+ INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
+ INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
+ atomic_set(&nes_ucontext->usecnt, 1);
+ return &nes_ucontext->ibucontext;
+}
+
+
+/**
+ * nes_dealloc_ucontext
+ */
+static int nes_dealloc_ucontext(struct ib_ucontext *context)
+{
+ /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
+ /* struct nes_device *nesdev = nesvnic->nesdev; */
+ struct nes_ucontext *nes_ucontext = to_nesucontext(context);
+
+ if (!atomic_dec_and_test(&nes_ucontext->usecnt))
+ return 0;
+ kfree(nes_ucontext);
+ return 0;
+}
+
+
+/**
+ * nes_mmap
+ */
+static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+ unsigned long index;
+ struct nes_vnic *nesvnic = to_nesvnic(context->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
+ struct nes_ucontext *nes_ucontext;
+ struct nes_qp *nesqp;
+
+ nes_ucontext = to_nesucontext(context);
+
+
+ if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
+ index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
+ index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
+ PAGE_SIZE-1) & (~(PAGE_SIZE-1));
+ if (!test_bit(index, nes_ucontext->allocated_wqs)) {
+ nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
+ return -EFAULT;
+ }
+ nesqp = nes_ucontext->mmap_nesqp[index];
+ if (nesqp == NULL) {
+ nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
+ return -EFAULT;
+ }
+ if (remap_pfn_range(vma, vma->vm_start,
+ virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot)) {
+ nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
+ return -EAGAIN;
+ }
+ vma->vm_private_data = nesqp;
+ return 0;
+ } else {
+ index = vma->vm_pgoff;
+ if (!test_bit(index, nes_ucontext->allocated_doorbells))
+ return -EFAULT;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ if (io_remap_pfn_range(vma, vma->vm_start,
+ (nesdev->doorbell_start +
+ ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
+ >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
+ return -EAGAIN;
+ vma->vm_private_data = nes_ucontext;
+ return 0;
+ }
+
+ return -ENOSYS;
+}
+
+
+/**
+ * nes_alloc_pd
+ */
+static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ struct nes_pd *nespd;
+ struct nes_vnic *nesvnic = to_nesvnic(ibdev);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_ucontext *nesucontext;
+ struct nes_alloc_pd_resp uresp;
+ u32 pd_num = 0;
+ int err;
+
+ nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
+ nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
+ atomic_read(&nesvnic->netdev->refcnt));
+
+ err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
+ nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
+ if (err) {
+ return ERR_PTR(err);
+ }
+
+ nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
+ if (!nespd) {
+ nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
+ nespd, nesvnic->nesibdev->ibdev.name);
+
+ nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
+
+ if (context) {
+ nesucontext = to_nesucontext(context);
+ nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
+ NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
+ nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
+ nespd->mmap_db_index, nespd->pd_id);
+ if (nespd->mmap_db_index > NES_MAX_USER_DB_REGIONS) {
+ nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
+ nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
+ kfree(nespd);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ uresp.pd_id = nespd->pd_id;
+ uresp.mmap_db_index = nespd->mmap_db_index;
+ if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
+ nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
+ kfree(nespd);
+ return ERR_PTR(-EFAULT);
+ }
+
+ set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
+ nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
+ nesucontext->first_free_db = nespd->mmap_db_index + 1;
+ }
+
+ nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
+ return &nespd->ibpd;
+}
+
+
+/**
+ * nes_dealloc_pd
+ */
+static int nes_dealloc_pd(struct ib_pd *ibpd)
+{
+ struct nes_ucontext *nesucontext;
+ struct nes_pd *nespd = to_nespd(ibpd);
+ struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+
+ if ((ibpd->uobject) && (ibpd->uobject->context)) {
+ nesucontext = to_nesucontext(ibpd->uobject->context);
+ nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
+ nespd->mmap_db_index);
+ clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
+ nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
+ if (nesucontext->first_free_db > nespd->mmap_db_index) {
+ nesucontext->first_free_db = nespd->mmap_db_index;
+ }
+ }
+
+ nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
+ nespd->pd_id, nespd);
+ nes_free_resource(nesadapter, nesadapter->allocated_pds,
+ (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
+ kfree(nespd);
+
+ return 0;
+}
+
+
+/**
+ * nes_create_ah
+ */
+static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+
+/**
+ * nes_destroy_ah
+ */
+static int nes_destroy_ah(struct ib_ah *ah)
+{
+ return -ENOSYS;
+}
+
+
+/**
+ * nes_get_encoded_size
+ */
+static inline u8 nes_get_encoded_size(int *size)
+{
+ u8 encoded_size = 0;
+ if (*size <= 32) {
+ *size = 32;
+ encoded_size = 1;
+ } else if (*size <= 128) {
+ *size = 128;
+ encoded_size = 2;
+ } else if (*size <= 512) {
+ *size = 512;
+ encoded_size = 3;
+ }
+ return (encoded_size);
+}
+
+
+
+/**
+ * nes_setup_virt_qp
+ */
+static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
+ struct nes_vnic *nesvnic, int sq_size, int rq_size)
+{
+ unsigned long flags;
+ void *mem;
+ __le64 *pbl = NULL;
+ __le64 *tpbl;
+ __le64 *pblbuffer;
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ u32 pbl_entries;
+ u8 rq_pbl_entries;
+ u8 sq_pbl_entries;
+
+ pbl_entries = nespbl->pbl_size >> 3;
+ nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%p\n",
+ nespbl->pbl_size, pbl_entries,
+ (void *)nespbl->pbl_vbase,
+ (void *)nespbl->pbl_pbase);
+ pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
+ /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
+ /* the first pbl to be fro the rq_vbase... */
+ rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
+ sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
+ nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
+ if (!nespbl->page) {
+ nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
+ kfree(nespbl);
+ return -ENOMEM;
+ }
+
+ nesqp->hwqp.sq_vbase = kmap(nespbl->page);
+ nesqp->page = nespbl->page;
+ if (!nesqp->hwqp.sq_vbase) {
+ nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
+ kfree(nespbl);
+ return -ENOMEM;
+ }
+
+ /* Now to get to sq.. we need to calculate how many */
+ /* PBL entries were used by the rq.. */
+ pbl += sq_pbl_entries;
+ nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
+ /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
+ /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
+
+ nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%p rq_vbase=%p rq_pbase=%p\n",
+ nesqp->hwqp.sq_vbase, (void *)nesqp->hwqp.sq_pbase,
+ nesqp->hwqp.rq_vbase, (void *)nesqp->hwqp.rq_pbase);
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ if (!nesadapter->free_256pbl) {
+ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
+ nespbl->pbl_pbase);
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kunmap(nesqp->page);
+ kfree(nespbl);
+ return -ENOMEM;
+ }
+ nesadapter->free_256pbl--;
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+
+ nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
+ pblbuffer = nesqp->pbl_vbase;
+ if (!nesqp->pbl_vbase) {
+ /* memory allocated during nes_reg_user_mr() */
+ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
+ nespbl->pbl_pbase);
+ kfree(nespbl);
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ nesadapter->free_256pbl++;
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kunmap(nesqp->page);
+ return -ENOMEM;
+ }
+ memset(nesqp->pbl_vbase, 0, 256);
+ /* fill in the page address in the pbl buffer.. */
+ tpbl = pblbuffer + 16;
+ pbl = (__le64 *)nespbl->pbl_vbase;
+ while (sq_pbl_entries--)
+ *tpbl++ = *pbl++;
+ tpbl = pblbuffer;
+ while (rq_pbl_entries--)
+ *tpbl++ = *pbl++;
+
+ /* done with memory allocated during nes_reg_user_mr() */
+ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
+ nespbl->pbl_pbase);
+ kfree(nespbl);
+
+ nesqp->qp_mem_size =
+ max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
+ /* Round up to a multiple of a page */
+ nesqp->qp_mem_size += PAGE_SIZE - 1;
+ nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
+
+ mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
+ &nesqp->hwqp.q2_pbase);
+
+ if (!mem) {
+ pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
+ nesqp->pbl_vbase = NULL;
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ nesadapter->free_256pbl++;
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kunmap(nesqp->page);
+ return -ENOMEM;
+ }
+ nesqp->hwqp.q2_vbase = mem;
+ mem += 256;
+ memset(nesqp->hwqp.q2_vbase, 0, 256);
+ nesqp->nesqp_context = mem;
+ memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
+ nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
+
+ return 0;
+}
+
+
+/**
+ * nes_setup_mmap_qp
+ */
+static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
+ int sq_size, int rq_size)
+{
+ void *mem;
+ struct nes_device *nesdev = nesvnic->nesdev;
+
+ nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
+ (sizeof(struct nes_hw_qp_wqe) * rq_size) +
+ max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
+ 256; /* this is Q2 */
+ /* Round up to a multiple of a page */
+ nesqp->qp_mem_size += PAGE_SIZE - 1;
+ nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
+
+ mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
+ &nesqp->hwqp.sq_pbase);
+ if (!mem)
+ return -ENOMEM;
+ nes_debug(NES_DBG_QP, "PCI consistent memory for "
+ "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
+ mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
+
+ memset(mem, 0, nesqp->qp_mem_size);
+
+ nesqp->hwqp.sq_vbase = mem;
+ mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
+
+ nesqp->hwqp.rq_vbase = mem;
+ nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
+ sizeof(struct nes_hw_qp_wqe) * sq_size;
+ mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
+
+ nesqp->hwqp.q2_vbase = mem;
+ nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
+ sizeof(struct nes_hw_qp_wqe) * rq_size;
+ mem += 256;
+ memset(nesqp->hwqp.q2_vbase, 0, 256);
+
+ nesqp->nesqp_context = mem;
+ nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
+ memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
+ return 0;
+}
+
+
+/**
+ * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
+ */
+static inline void nes_free_qp_mem(struct nes_device *nesdev,
+ struct nes_qp *nesqp, int virt_wqs)
+{
+ unsigned long flags;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ if (!virt_wqs) {
+ pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
+ nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
+ }else {
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ nesadapter->free_256pbl++;
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
+ pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
+ nesqp->pbl_vbase = NULL;
+ kunmap(nesqp->page);
+ }
+}
+
+
+/**
+ * nes_create_qp
+ */
+static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
+ struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
+{
+ u64 u64temp= 0;
+ u64 u64nesqp = 0;
+ struct nes_pd *nespd = to_nespd(ibpd);
+ struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_qp *nesqp;
+ struct nes_cq *nescq;
+ struct nes_ucontext *nes_ucontext;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_cqp_request *cqp_request;
+ struct nes_create_qp_req req;
+ struct nes_create_qp_resp uresp;
+ struct nes_pbl *nespbl = NULL;
+ u32 qp_num = 0;
+ u32 opcode = 0;
+ /* u32 counter = 0; */
+ void *mem;
+ unsigned long flags;
+ int ret;
+ int err;
+ int virt_wqs = 0;
+ int sq_size;
+ int rq_size;
+ u8 sq_encoded_size;
+ u8 rq_encoded_size;
+ /* int counter; */
+
+ atomic_inc(&qps_created);
+ switch (init_attr->qp_type) {
+ case IB_QPT_RC:
+ if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
+ init_attr->cap.max_inline_data = 0;
+ } else {
+ init_attr->cap.max_inline_data = 64;
+ }
+ sq_size = init_attr->cap.max_send_wr;
+ rq_size = init_attr->cap.max_recv_wr;
+
+ // check if the encoded sizes are OK or not...
+ sq_encoded_size = nes_get_encoded_size(&sq_size);
+ rq_encoded_size = nes_get_encoded_size(&rq_size);
+
+ if ((!sq_encoded_size) || (!rq_encoded_size)) {
+ nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
+ rq_size, sq_size);
+ return ERR_PTR(-EINVAL);
+ }
+
+ init_attr->cap.max_send_wr = sq_size -2;
+ init_attr->cap.max_recv_wr = rq_size -1;
+ nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
+
+ ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
+ nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
+ if (ret) {
+ return ERR_PTR(ret);
+ }
+
+ /* Need 512 (actually now 1024) byte alignment on this structure */
+ mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
+ if (!mem) {
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ u64nesqp = (unsigned long)mem;
+ u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
+ u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
+ u64nesqp &= ~u64temp;
+ nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
+ /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
+ nesqp, mem, NES_SW_CONTEXT_ALIGN); */
+ nesqp->allocated_buffer = mem;
+
+ if (udata) {
+ if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ kfree(nesqp->allocated_buffer);
+ nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
+ return NULL;
+ }
+ if (req.user_wqe_buffers) {
+ virt_wqs = 1;
+ }
+ if ((ibpd->uobject) && (ibpd->uobject->context)) {
+ nesqp->user_mode = 1;
+ nes_ucontext = to_nesucontext(ibpd->uobject->context);
+ if (virt_wqs) {
+ err = 1;
+ list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
+ if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
+ list_del(&nespbl->list);
+ err = 0;
+ nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
+ nespbl, nespbl->user_base);
+ break;
+ }
+ }
+ if (err) {
+ nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
+ (long long unsigned int)req.user_wqe_buffers);
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ kfree(nesqp->allocated_buffer);
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
+ nes_ucontext = to_nesucontext(ibpd->uobject->context);
+ nesqp->mmap_sq_db_index =
+ find_next_zero_bit(nes_ucontext->allocated_wqs,
+ NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
+ /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
+ nespd->mmap_db_index); */
+ if (nesqp->mmap_sq_db_index > NES_MAX_USER_WQ_REGIONS) {
+ nes_debug(NES_DBG_QP,
+ "db index > max user regions, failing create QP\n");
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ if (virt_wqs) {
+ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
+ nespbl->pbl_pbase);
+ kfree(nespbl);
+ }
+ kfree(nesqp->allocated_buffer);
+ return ERR_PTR(-ENOMEM);
+ }
+ set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
+ nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
+ nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
+ } else {
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ kfree(nesqp->allocated_buffer);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+ err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
+ nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
+ if (err) {
+ nes_debug(NES_DBG_QP,
+ "error geting qp mem code = %d\n", err);
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ kfree(nesqp->allocated_buffer);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ nesqp->hwqp.sq_size = sq_size;
+ nesqp->hwqp.sq_encoded_size = sq_encoded_size;
+ nesqp->hwqp.sq_head = 1;
+ nesqp->hwqp.rq_size = rq_size;
+ nesqp->hwqp.rq_encoded_size = rq_encoded_size;
+ /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
+ (void *)nesqp->nesqp_context_pbase);
+ */
+ nesqp->hwqp.qp_id = qp_num;
+ nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
+ nesqp->nespd = nespd;
+
+ nescq = to_nescq(init_attr->send_cq);
+ nesqp->nesscq = nescq;
+ nescq = to_nescq(init_attr->recv_cq);
+ nesqp->nesrcq = nescq;
+
+ nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
+ NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
+ nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
+ NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
+ nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
+ NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
+ nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
+ ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
+ u64temp = (u64)nesqp->hwqp.sq_pbase;
+ nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
+ nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
+
+
+ if (!virt_wqs) {
+ u64temp = (u64)nesqp->hwqp.sq_pbase;
+ nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
+ nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
+ u64temp = (u64)nesqp->hwqp.rq_pbase;
+ nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
+ nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
+ } else {
+ u64temp = (u64)nesqp->pbl_pbase;
+ nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
+ nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
+ }
+
+ /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
+ nesvnic->next_qp_nic_index,
+ nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ nesqp->nesqp_context->misc2 |= cpu_to_le32(
+ (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
+ NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
+ nesvnic->next_qp_nic_index++;
+ if ((nesvnic->next_qp_nic_index > 3) ||
+ (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
+ nesvnic->next_qp_nic_index = 0;
+ }
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+
+ nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
+ u64temp = (u64)nesqp->hwqp.q2_pbase;
+ nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
+ nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
+ nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
+ nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
+ nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
+ ((((u32)nesadapter->max_irrq_wr) <<
+ NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
+ if (disable_mpa_crc) {
+ nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
+ nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
+ }
+
+
+ /* Create the QP */
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ nes_free_qp_mem(nesdev, nesqp,virt_wqs);
+ kfree(nesqp->allocated_buffer);
+ return ERR_PTR(-ENOMEM);
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ if (!virt_wqs) {
+ opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
+ NES_CQP_QP_IWARP_STATE_IDLE;
+ } else {
+ opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
+ NES_CQP_QP_IWARP_STATE_IDLE;
+ }
+ opcode |= NES_CQP_QP_CQS_VALID;
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
+
+ u64temp = (u64)nesqp->nesqp_context_pbase;
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
+ nesqp->hwqp.qp_id);
+ ret = wait_event_timeout(cqp_request->waitq,
+ (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
+ " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
+ cqp_request->major_code, cqp_request->minor_code);
+ if ((!ret) || (cqp_request->major_code)) {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ nes_free_qp_mem(nesdev, nesqp,virt_wqs);
+ kfree(nesqp->allocated_buffer);
+ if (!ret) {
+ return ERR_PTR(-ETIME);
+ } else {
+ return ERR_PTR(-EIO);
+ }
+ } else {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ }
+
+ if (ibpd->uobject) {
+ uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
+ uresp.actual_sq_size = sq_size;
+ uresp.actual_rq_size = rq_size;
+ uresp.qp_id = nesqp->hwqp.qp_id;
+ uresp.nes_drv_opt = nes_drv_opt;
+ if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
+ nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
+ nes_free_qp_mem(nesdev, nesqp,virt_wqs);
+ kfree(nesqp->allocated_buffer);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+
+ nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
+ nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
+ spin_lock_init(&nesqp->lock);
+ init_waitqueue_head(&nesqp->state_waitq);
+ init_waitqueue_head(&nesqp->kick_waitq);
+ nes_add_ref(&nesqp->ibqp);
+ break;
+ default:
+ nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
+ return ERR_PTR(-EINVAL);
+ break;
+ }
+
+ /* update the QP table */
+ nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
+ nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
+ atomic_read(&nesvnic->netdev->refcnt));
+
+ return &nesqp->ibqp;
+}
+
+
+/**
+ * nes_destroy_qp
+ */
+static int nes_destroy_qp(struct ib_qp *ibqp)
+{
+ struct nes_qp *nesqp = to_nesqp(ibqp);
+ /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
+ struct nes_ucontext *nes_ucontext;
+ struct ib_qp_attr attr;
+ struct iw_cm_id *cm_id;
+ struct iw_cm_event cm_event;
+ int ret;
+
+ atomic_inc(&sw_qps_destroyed);
+ nesqp->destroyed = 1;
+
+ /* Blow away the connection if it exists. */
+ if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
+ /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
+ attr.qp_state = IB_QPS_ERR;
+ nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
+ }
+
+ if (((nesqp->ibqp_state == IB_QPS_INIT) ||
+ (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
+ cm_id = nesqp->cm_id;
+ cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+ cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
+ cm_event.local_addr = cm_id->local_addr;
+ cm_event.remote_addr = cm_id->remote_addr;
+ cm_event.private_data = NULL;
+ cm_event.private_data_len = 0;
+
+ nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
+ "QP%u. cm_id = %p, refcount = %u. \n",
+ nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
+
+ cm_id->rem_ref(cm_id);
+ ret = cm_id->event_handler(cm_id, &cm_event);
+ if (ret)
+ nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
+ }
+
+
+ if (nesqp->user_mode) {
+ if ((ibqp->uobject)&&(ibqp->uobject->context)) {
+ nes_ucontext = to_nesucontext(ibqp->uobject->context);
+ clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
+ nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
+ if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
+ nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
+ }
+ }
+ if (nesqp->pbl_pbase)
+ kunmap(nesqp->page);
+ }
+
+ nes_rem_ref(&nesqp->ibqp);
+ return 0;
+}
+
+
+/**
+ * nes_create_cq
+ */
+static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
+ int comp_vector,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ u64 u64temp;
+ struct nes_vnic *nesvnic = to_nesvnic(ibdev);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_cq *nescq;
+ struct nes_ucontext *nes_ucontext = NULL;
+ struct nes_cqp_request *cqp_request;
+ void *mem = NULL;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_pbl *nespbl = NULL;
+ struct nes_create_cq_req req;
+ struct nes_create_cq_resp resp;
+ u32 cq_num = 0;
+ u32 opcode = 0;
+ u32 pbl_entries = 1;
+ int err;
+ unsigned long flags;
+ int ret;
+
+ err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
+ nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
+ if (err) {
+ return ERR_PTR(err);
+ }
+
+ nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
+ if (!nescq) {
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ nescq->hw_cq.cq_size = max(entries + 1, 5);
+ nescq->hw_cq.cq_number = cq_num;
+ nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
+
+
+ if (context) {
+ nes_ucontext = to_nesucontext(context);
+ if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-EFAULT);
+ }
+ nesvnic->mcrq_ucontext = nes_ucontext;
+ nes_ucontext->mcrqf = req.mcrqf;
+ if (nes_ucontext->mcrqf) {
+ if (nes_ucontext->mcrqf & 0x80000000)
+ nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 12 + (nes_ucontext->mcrqf & 0xf) - 1;
+ else if (nes_ucontext->mcrqf & 0x40000000)
+ nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
+ else
+ nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ }
+ nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
+ (unsigned long)req.user_cq_buffer, entries);
+ list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
+ if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
+ list_del(&nespbl->list);
+ err = 0;
+ nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
+ nespbl);
+ break;
+ }
+ }
+ if (err) {
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(err);
+ }
+
+ pbl_entries = nespbl->pbl_size >> 3;
+ nescq->cq_mem_size = 0;
+ } else {
+ nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
+ nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
+ entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
+
+ /* allocate the physical buffer space */
+ mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
+ &nescq->hw_cq.cq_pbase);
+ if (!mem) {
+ printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(mem, 0, nescq->cq_mem_size);
+ nescq->hw_cq.cq_vbase = mem;
+ nescq->hw_cq.cq_head = 0;
+ nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
+ nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
+ (u32)nescq->hw_cq.cq_pbase);
+ }
+
+ nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
+ spin_lock_init(&nescq->lock);
+
+ /* send CreateCQ request to CQP */
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
+ if (!context)
+ pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
+ nescq->hw_cq.cq_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-ENOMEM);
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
+ NES_CQP_CQ_CHK_OVERFLOW |
+ NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
+
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+
+ if (pbl_entries != 1) {
+ if (pbl_entries > 32) {
+ /* use 4k pbl */
+ nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
+ if (nesadapter->free_4kpbl == 0) {
+ if (cqp_request->dynamic) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kfree(cqp_request);
+ } else {
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ }
+ if (!context)
+ pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
+ nescq->hw_cq.cq_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-ENOMEM);
+ } else {
+ opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
+ nescq->virtual_cq = 2;
+ nesadapter->free_4kpbl--;
+ }
+ } else {
+ /* use 256 byte pbl */
+ nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
+ if (nesadapter->free_256pbl == 0) {
+ if (cqp_request->dynamic) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kfree(cqp_request);
+ } else {
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ }
+ if (!context)
+ pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
+ nescq->hw_cq.cq_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-ENOMEM);
+ } else {
+ opcode |= NES_CQP_CQ_VIRT;
+ nescq->virtual_cq = 1;
+ nesadapter->free_256pbl--;
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
+ (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
+
+ if (context) {
+ if (pbl_entries != 1)
+ u64temp = (u64)nespbl->pbl_pbase;
+ else
+ u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
+ nes_ucontext->mmap_db_index[0]);
+ } else {
+ u64temp = (u64)nescq->hw_cq.cq_pbase;
+ cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
+ }
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
+ cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
+ u64temp = (u64)(unsigned long)&nescq->hw_cq;
+ cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
+ cpu_to_le32((u32)(u64temp >> 1));
+ cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
+ cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
+ nescq->hw_cq.cq_number);
+ ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
+ NES_EVENT_TIMEOUT * 2);
+ nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
+ nescq->hw_cq.cq_number, ret);
+ if ((!ret) || (cqp_request->major_code)) {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ nes_debug(NES_DBG_CQ, "iWARP CQ%u create timeout expired, major code = 0x%04X,"
+ " minor code = 0x%04X\n",
+ nescq->hw_cq.cq_number, cqp_request->major_code, cqp_request->minor_code);
+ if (!context)
+ pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
+ nescq->hw_cq.cq_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-EIO);
+ } else {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ }
+
+ if (context) {
+ /* free the nespbl */
+ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
+ nespbl->pbl_pbase);
+ kfree(nespbl);
+ resp.cq_id = nescq->hw_cq.cq_number;
+ resp.cq_size = nescq->hw_cq.cq_size;
+ resp.mmap_db_index = 0;
+ if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
+ kfree(nescq);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+
+ return &nescq->ibcq;
+}
+
+
+/**
+ * nes_destroy_cq
+ */
+static int nes_destroy_cq(struct ib_cq *ib_cq)
+{
+ struct nes_cq *nescq;
+ struct nes_device *nesdev;
+ struct nes_vnic *nesvnic;
+ struct nes_adapter *nesadapter;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_cqp_request *cqp_request;
+ unsigned long flags;
+ u32 opcode = 0;
+ int ret;
+
+ if (ib_cq == NULL)
+ return 0;
+
+ nescq = to_nescq(ib_cq);
+ nesvnic = to_nesvnic(ib_cq->device);
+ nesdev = nesvnic->nesdev;
+ nesadapter = nesdev->nesadapter;
+
+ nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
+
+ /* Send DestroyCQ request to CQP */
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
+ return -ENOMEM;
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+ opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ if (nescq->virtual_cq == 1) {
+ nesadapter->free_256pbl++;
+ if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
+ printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
+ __FUNCTION__, nesadapter->free_256pbl, nesadapter->max_256pbl);
+ }
+ } else if (nescq->virtual_cq == 2) {
+ nesadapter->free_4kpbl++;
+ if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
+ printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
+ __FUNCTION__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
+ }
+ opcode |= NES_CQP_CQ_4KB_CHUNK;
+ }
+
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
+ (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
+ nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
+ nescq->hw_cq.cq_number);
+ ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ nescq->hw_cq.cq_number, ret, cqp_request->major_code,
+ cqp_request->minor_code);
+ if ((!ret) || (cqp_request->major_code)) {
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ if (!ret) {
+ nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
+ nescq->hw_cq.cq_number);
+ ret = -ETIME;
+ } else {
+ nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
+ nescq->hw_cq.cq_number);
+ ret = -EIO;
+ }
+ } else {
+ ret = 0;
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ }
+
+ if (nescq->cq_mem_size)
+ pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
+ (void *)nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
+ kfree(nescq);
+
+ return ret;
+}
+
+
+/**
+ * nes_reg_mr
+ */
+static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
+ u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
+ dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count,
+ int acc, u64 *iova_start)
+{
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_cqp_request *cqp_request;
+ unsigned long flags;
+ int ret;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ /* int count; */
+ u32 opcode = 0;
+ u16 major_code;
+
+ /* Register the region with the adapter */
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
+ return -ENOMEM;
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ /* track PBL resources */
+ if (pbl_count != 0) {
+ if (pbl_count > 1) {
+ /* Two level PBL */
+ if ((pbl_count+1) > nesadapter->free_4kpbl) {
+ nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n");
+ if (cqp_request->dynamic) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kfree(cqp_request);
+ } else {
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ }
+ return -ENOMEM;
+ } else {
+ nesadapter->free_4kpbl -= pbl_count+1;
+ }
+ } else if (residual_page_count > 32) {
+ if (pbl_count > nesadapter->free_4kpbl) {
+ nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n");
+ if (cqp_request->dynamic) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kfree(cqp_request);
+ } else {
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ }
+ return -ENOMEM;
+ } else {
+ nesadapter->free_4kpbl -= pbl_count;
+ }
+ } else {
+ if (pbl_count > nesadapter->free_256pbl) {
+ nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n");
+ if (cqp_request->dynamic) {
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ kfree(cqp_request);
+ } else {
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ }
+ return -ENOMEM;
+ } else {
+ nesadapter->free_256pbl -= pbl_count;
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+
+ opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
+ NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
+ if (acc & IB_ACCESS_LOCAL_WRITE)
+ opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
+ if (acc & IB_ACCESS_REMOTE_WRITE)
+ opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
+ if (acc & IB_ACCESS_REMOTE_READ)
+ opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
+ if (acc & IB_ACCESS_MW_BIND)
+ opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
+
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
+
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
+ cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
+ cpu_to_le32(nespd->pd_id & 0x00007fff);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
+
+ if (pbl_count == 0) {
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
+ } else {
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX,
+ (((pbl_count - 1) * 4096) + (residual_page_count*8)));
+
+ if ((pbl_count > 1) || (residual_page_count > 32))
+ cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
+ }
+ barrier();
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ stag, ret, cqp_request->major_code, cqp_request->minor_code);
+ major_code = cqp_request->major_code;
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ if (!ret)
+ return -ETIME;
+ else if (major_code)
+ return -EIO;
+ else
+ return 0;
+
+ return 0;
+}
+
+
+/**
+ * nes_reg_phys_mr
+ */
+static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
+ struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
+ u64 * iova_start)
+{
+ u64 region_length;
+ struct nes_pd *nespd = to_nespd(ib_pd);
+ struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_mr *nesmr;
+ struct ib_mr *ibmr;
+ struct nes_vpbl vpbl;
+ struct nes_root_vpbl root_vpbl;
+ u32 stag;
+ u32 i;
+ u32 stag_index = 0;
+ u32 next_stag_index = 0;
+ u32 driver_key = 0;
+ u32 root_pbl_index = 0;
+ u32 cur_pbl_index = 0;
+ int err = 0, pbl_depth = 0;
+ int ret = 0;
+ u16 pbl_count = 0;
+ u8 single_page = 1;
+ u8 stag_key = 0;
+
+ pbl_depth = 0;
+ region_length = 0;
+ vpbl.pbl_vbase = NULL;
+ root_vpbl.pbl_vbase = NULL;
+ root_vpbl.pbl_pbase = 0;
+
+ get_random_bytes(&next_stag_index, sizeof(next_stag_index));
+ stag_key = (u8)next_stag_index;
+
+ driver_key = 0;
+
+ next_stag_index >>= 8;
+ next_stag_index %= nesadapter->max_mr;
+ if (num_phys_buf > (1024*512)) {
+ return ERR_PTR(-E2BIG);
+ }
+
+ err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
+ &stag_index, &next_stag_index);
+ if (err) {
+ return ERR_PTR(err);
+ }
+
+ nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
+ if (!nesmr) {
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ for (i = 0; i < num_phys_buf; i++) {
+
+ if ((i & 0x01FF) == 0) {
+ if (root_pbl_index == 1) {
+ /* Allocate the root PBL */
+ root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
+ &root_vpbl.pbl_pbase);
+ nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
+ root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
+ if (!root_vpbl.pbl_vbase) {
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ kfree(nesmr);
+ return ERR_PTR(-ENOMEM);
+ }
+ root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
+ if (!root_vpbl.leaf_vpbl) {
+ pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
+ root_vpbl.pbl_pbase);
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ kfree(nesmr);
+ return ERR_PTR(-ENOMEM);
+ }
+ root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
+ root_vpbl.pbl_vbase[0].pa_high =
+ cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
+ root_vpbl.leaf_vpbl[0] = vpbl;
+ }
+ /* Allocate a 4K buffer for the PBL */
+ vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
+ &vpbl.pbl_pbase);
+ nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
+ vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
+ if (!vpbl.pbl_vbase) {
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ ibmr = ERR_PTR(-ENOMEM);
+ kfree(nesmr);
+ goto reg_phys_err;
+ }
+ /* Fill in the root table */
+ if (1 <= root_pbl_index) {
+ root_vpbl.pbl_vbase[root_pbl_index].pa_low =
+ cpu_to_le32((u32)vpbl.pbl_pbase);
+ root_vpbl.pbl_vbase[root_pbl_index].pa_high =
+ cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
+ root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
+ }
+ root_pbl_index++;
+ cur_pbl_index = 0;
+ }
+ if (buffer_list[i].addr & ~PAGE_MASK) {
+ /* TODO: Unwind allocated buffers */
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
+ (unsigned int) buffer_list[i].addr);
+ ibmr = ERR_PTR(-EINVAL);
+ kfree(nesmr);
+ goto reg_phys_err;
+ }
+
+ if (!buffer_list[i].size) {
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
+ ibmr = ERR_PTR(-EINVAL);
+ kfree(nesmr);
+ goto reg_phys_err;
+ }
+
+ region_length += buffer_list[i].size;
+ if ((i != 0) && (single_page)) {
+ if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
+ single_page = 0;
+ }
+ vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
+ vpbl.pbl_vbase[cur_pbl_index++].pa_high =
+ cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
+ }
+
+ stag = stag_index << 8;
+ stag |= driver_key;
+ stag += (u32)stag_key;
+
+ nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
+ " length = 0x%016lX, index = 0x%08X\n",
+ stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
+
+ region_length -= (*iova_start)&PAGE_MASK;
+
+ /* Make the leaf PBL the root if only one PBL */
+ if (root_pbl_index == 1) {
+ root_vpbl.pbl_pbase = vpbl.pbl_pbase;
+ }
+
+ if (single_page) {
+ pbl_count = 0;
+ } else {
+ pbl_count = root_pbl_index;
+ }
+ ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
+ buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start);
+
+ if (ret == 0) {
+ nesmr->ibmr.rkey = stag;
+ nesmr->ibmr.lkey = stag;
+ nesmr->mode = IWNES_MEMREG_TYPE_MEM;
+ ibmr = &nesmr->ibmr;
+ nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
+ nesmr->pbls_used = pbl_count;
+ if (pbl_count > 1) {
+ nesmr->pbls_used++;
+ }
+ } else {
+ kfree(nesmr);
+ ibmr = ERR_PTR(-ENOMEM);
+ }
+
+ reg_phys_err:
+ /* free the resources */
+ if (root_pbl_index == 1) {
+ /* single PBL case */
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
+ } else {
+ for (i=0; i<root_pbl_index; i++) {
+ pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
+ root_vpbl.leaf_vpbl[i].pbl_pbase);
+ }
+ kfree(root_vpbl.leaf_vpbl);
+ pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
+ root_vpbl.pbl_pbase);
+ }
+
+ return ibmr;
+}
+
+
+/**
+ * nes_get_dma_mr
+ */
+static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ struct ib_phys_buf bl;
+ u64 kva = 0;
+
+ nes_debug(NES_DBG_MR, "\n");
+
+ bl.size = (u64)0xffffffffffULL;
+ bl.addr = 0;
+ return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
+}
+
+
+/**
+ * nes_reg_user_mr
+ */
+static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt, int acc, struct ib_udata *udata)
+{
+ u64 iova_start;
+ __le64 *pbl;
+ u64 region_length;
+ dma_addr_t last_dma_addr = 0;
+ dma_addr_t first_dma_addr = 0;
+ struct nes_pd *nespd = to_nespd(pd);
+ struct nes_vnic *nesvnic = to_nesvnic(pd->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct ib_mr *ibmr = ERR_PTR(-EINVAL);
+ struct ib_umem_chunk *chunk;
+ struct nes_ucontext *nes_ucontext;
+ struct nes_pbl *nespbl;
+ struct nes_mr *nesmr;
+ struct ib_umem *region;
+ struct nes_mem_reg_req req;
+ struct nes_vpbl vpbl;
+ struct nes_root_vpbl root_vpbl;
+ int nmap_index, page_index;
+ int page_count = 0;
+ int err, pbl_depth = 0;
+ int chunk_pages;
+ int ret;
+ u32 stag;
+ u32 stag_index = 0;
+ u32 next_stag_index;
+ u32 driver_key;
+ u32 root_pbl_index = 0;
+ u32 cur_pbl_index = 0;
+ u32 skip_pages;
+ u16 pbl_count;
+ u8 single_page = 1;
+ u8 stag_key;
+
+ region = ib_umem_get(pd->uobject->context, start, length, acc);
+ if (IS_ERR(region)) {
+ return (struct ib_mr *)region;
+ }
+
+ nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
+ " offset = %u, page size = %u.\n",
+ (unsigned long int)start, (unsigned long int)virt, (u32)length,
+ region->offset, region->page_size);
+
+ skip_pages = ((u32)region->offset) >> 12;
+
+ if (ib_copy_from_udata(&req, udata, sizeof(req)))
+ return ERR_PTR(-EFAULT);
+ nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
+
+ switch (req.reg_type) {
+ case IWNES_MEMREG_TYPE_MEM:
+ pbl_depth = 0;
+ region_length = 0;
+ vpbl.pbl_vbase = NULL;
+ root_vpbl.pbl_vbase = NULL;
+ root_vpbl.pbl_pbase = 0;
+
+ get_random_bytes(&next_stag_index, sizeof(next_stag_index));
+ stag_key = (u8)next_stag_index;
+
+ driver_key = next_stag_index & 0x70000000;
+
+ next_stag_index >>= 8;
+ next_stag_index %= nesadapter->max_mr;
+
+ err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
+ nesadapter->max_mr, &stag_index, &next_stag_index);
+ if (err) {
+ ib_umem_release(region);
+ return ERR_PTR(err);
+ }
+
+ nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
+ if (!nesmr) {
+ ib_umem_release(region);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ return ERR_PTR(-ENOMEM);
+ }
+ nesmr->region = region;
+
+ list_for_each_entry(chunk, &region->chunk_list, list) {
+ nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
+ chunk->nents, chunk->nmap);
+ for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
+ if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
+ ib_umem_release(region);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
+ (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
+ ibmr = ERR_PTR(-EINVAL);
+ kfree(nesmr);
+ goto reg_user_mr_err;
+ }
+
+ if (!sg_dma_len(&chunk->page_list[nmap_index])) {
+ ib_umem_release(region);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ stag_index);
+ nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
+ ibmr = ERR_PTR(-EINVAL);
+ kfree(nesmr);
+ goto reg_user_mr_err;
+ }
+
+ region_length += sg_dma_len(&chunk->page_list[nmap_index]);
+ chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
+ region_length -= skip_pages << 12;
+ for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
+ skip_pages = 0;
+ if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
+ goto enough_pages;
+ if ((page_count&0x01FF) == 0) {
+ if (page_count>(1024*512)) {
+ ib_umem_release(region);
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter,
+ nesadapter->allocated_mrs, stag_index);
+ kfree(nesmr);
+ ibmr = ERR_PTR(-E2BIG);
+ goto reg_user_mr_err;
+ }
+ if (root_pbl_index == 1) {
+ root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
+ 8192, &root_vpbl.pbl_pbase);
+ nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
+ root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
+ if (!root_vpbl.pbl_vbase) {
+ ib_umem_release(region);
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ stag_index);
+ kfree(nesmr);
+ ibmr = ERR_PTR(-ENOMEM);
+ goto reg_user_mr_err;
+ }
+ root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
+ GFP_KERNEL);
+ if (!root_vpbl.leaf_vpbl) {
+ ib_umem_release(region);
+ pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
+ root_vpbl.pbl_pbase);
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ stag_index);
+ kfree(nesmr);
+ ibmr = ERR_PTR(-ENOMEM);
+ goto reg_user_mr_err;
+ }
+ root_vpbl.pbl_vbase[0].pa_low =
+ cpu_to_le32((u32)vpbl.pbl_pbase);
+ root_vpbl.pbl_vbase[0].pa_high =
+ cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
+ root_vpbl.leaf_vpbl[0] = vpbl;
+ }
+ vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
+ &vpbl.pbl_pbase);
+ nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
+ vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
+ if (!vpbl.pbl_vbase) {
+ ib_umem_release(region);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ ibmr = ERR_PTR(-ENOMEM);
+ kfree(nesmr);
+ goto reg_user_mr_err;
+ }
+ if (1 <= root_pbl_index) {
+ root_vpbl.pbl_vbase[root_pbl_index].pa_low =
+ cpu_to_le32((u32)vpbl.pbl_pbase);
+ root_vpbl.pbl_vbase[root_pbl_index].pa_high =
+ cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
+ root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
+ }
+ root_pbl_index++;
+ cur_pbl_index = 0;
+ }
+ if (single_page) {
+ if (page_count != 0) {
+ if ((last_dma_addr+4096) !=
+ (sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096)))
+ single_page = 0;
+ last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096);
+ } else {
+ first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096);
+ last_dma_addr = first_dma_addr;
+ }
+ }
+
+ vpbl.pbl_vbase[cur_pbl_index].pa_low =
+ cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096)));
+ vpbl.pbl_vbase[cur_pbl_index].pa_high =
+ cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096))) >> 32)));
+ cur_pbl_index++;
+ page_count++;
+ }
+ }
+ }
+ enough_pages:
+ nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
+ " stag_key=0x%08x\n",
+ stag_index, driver_key, stag_key);
+ stag = stag_index << 8;
+ stag |= driver_key;
+ stag += (u32)stag_key;
+ if (stag == 0) {
+ stag = 1;
+ }
+
+ iova_start = virt;
+ /* Make the leaf PBL the root if only one PBL */
+ if (root_pbl_index == 1) {
+ root_vpbl.pbl_pbase = vpbl.pbl_pbase;
+ }
+
+ if (single_page) {
+ pbl_count = 0;
+ } else {
+ pbl_count = root_pbl_index;
+ first_dma_addr = 0;
+ }
+ nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
+ " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
+ stag, (unsigned int)iova_start,
+ (unsigned int)region_length, stag_index,
+ (unsigned long long)region->length, pbl_count);
+ ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl,
+ first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start);
+
+ nes_debug(NES_DBG_MR, "ret=%d\n", ret);
+
+ if (ret == 0) {
+ nesmr->ibmr.rkey = stag;
+ nesmr->ibmr.lkey = stag;
+ nesmr->mode = IWNES_MEMREG_TYPE_MEM;
+ ibmr = &nesmr->ibmr;
+ nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
+ nesmr->pbls_used = pbl_count;
+ if (pbl_count > 1) {
+ nesmr->pbls_used++;
+ }
+ } else {
+ ib_umem_release(region);
+ kfree(nesmr);
+ ibmr = ERR_PTR(-ENOMEM);
+ }
+
+ reg_user_mr_err:
+ /* free the resources */
+ if (root_pbl_index == 1) {
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ } else {
+ for (page_index=0; page_index<root_pbl_index; page_index++) {
+ pci_free_consistent(nesdev->pcidev, 4096,
+ root_vpbl.leaf_vpbl[page_index].pbl_vbase,
+ root_vpbl.leaf_vpbl[page_index].pbl_pbase);
+ }
+ kfree(root_vpbl.leaf_vpbl);
+ pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
+ root_vpbl.pbl_pbase);
+ }
+
+ nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
+
+ return ibmr;
+ break;
+ case IWNES_MEMREG_TYPE_QP:
+ case IWNES_MEMREG_TYPE_CQ:
+ nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
+ if (!nespbl) {
+ nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
+ ib_umem_release(region);
+ return ERR_PTR(-ENOMEM);
+ }
+ nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
+ if (!nesmr) {
+ ib_umem_release(region);
+ kfree(nespbl);
+ nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ nesmr->region = region;
+ nes_ucontext = to_nesucontext(pd->uobject->context);
+ pbl_depth = region->length >> 12;
+ pbl_depth += (region->length & (4096-1)) ? 1 : 0;
+ nespbl->pbl_size = pbl_depth*sizeof(u64);
+ if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
+ nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
+ } else {
+ nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
+ }
+
+ nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
+ nespbl->pbl_size, pbl_depth);
+ pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
+ &nespbl->pbl_pbase);
+ if (!pbl) {
+ ib_umem_release(region);
+ kfree(nesmr);
+ kfree(nespbl);
+ nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ nespbl->pbl_vbase = (u64 *)pbl;
+ nespbl->user_base = start;
+ nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%p,"
+ " pbl_vbase=%p user_base=0x%lx\n",
+ nespbl->pbl_size, (void *)nespbl->pbl_pbase,
+ (void*)nespbl->pbl_vbase, nespbl->user_base);
+
+ list_for_each_entry(chunk, &region->chunk_list, list) {
+ for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
+ chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
+ chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
+ nespbl->page = sg_page(&chunk->page_list[0]);
+ for (page_index=0; page_index<chunk_pages; page_index++) {
+ ((__le32 *)pbl)[0] = cpu_to_le32((u32)
+ (sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096)));
+ ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
+ (sg_dma_address(&chunk->page_list[nmap_index])+
+ (page_index*4096)))>>32);
+ nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
+ (unsigned long long)*pbl,
+ le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
+ pbl++;
+ }
+ }
+ }
+ if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
+ list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
+ } else {
+ list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
+ }
+ nesmr->ibmr.rkey = -1;
+ nesmr->ibmr.lkey = -1;
+ nesmr->mode = req.reg_type;
+ return &nesmr->ibmr;
+ break;
+ }
+
+ return ERR_PTR(-ENOSYS);
+}
+
+
+/**
+ * nes_dereg_mr
+ */
+static int nes_dereg_mr(struct ib_mr *ib_mr)
+{
+ struct nes_mr *nesmr = to_nesmr(ib_mr);
+ struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ struct nes_cqp_request *cqp_request;
+ unsigned long flags;
+ int ret;
+ u16 major_code;
+ u16 minor_code;
+
+ if (nesmr->region) {
+ ib_umem_release(nesmr->region);
+ }
+ if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
+ kfree(nesmr);
+ return 0;
+ }
+
+ /* Deallocate the region with the adapter */
+
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
+ return -ENOMEM;
+ }
+ cqp_request->waiting = 1;
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+ if (nesmr->pbls_used != 0) {
+ if (nesmr->pbl_4k) {
+ nesadapter->free_4kpbl += nesmr->pbls_used;
+ if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
+ printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n",
+ nesadapter->free_4kpbl, nesadapter->max_4kpbl);
+ }
+ } else {
+ nesadapter->free_256pbl += nesmr->pbls_used;
+ if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
+ printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n",
+ nesadapter->free_256pbl, nesadapter->max_256pbl);
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
+ NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
+ NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
+ ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
+ " CQP Major:Minor codes = 0x%04X:0x%04X\n",
+ ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
+
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ (ib_mr->rkey & 0x0fffff00) >> 8);
+
+ kfree(nesmr);
+
+ major_code = cqp_request->major_code;
+ minor_code = cqp_request->minor_code;
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ if (!ret) {
+ nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
+ " ib_mr=%p, rkey = 0x%08X\n",
+ ib_mr, ib_mr->rkey);
+ return -ETIME;
+ } else if (major_code) {
+ nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
+ " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
+ major_code, minor_code, ib_mr, ib_mr->rkey);
+ return -EIO;
+ } else
+ return 0;
+}
+
+
+/**
+ * show_rev
+ */
+static ssize_t show_rev(struct class_device *cdev, char *buf)
+{
+ struct nes_ib_device *nesibdev =
+ container_of(cdev, struct nes_ib_device, ibdev.class_dev);
+ struct nes_vnic *nesvnic = nesibdev->nesvnic;
+
+ nes_debug(NES_DBG_INIT, "\n");
+ return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
+}
+
+
+/**
+ * show_fw_ver
+ */
+static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
+{
+ struct nes_ib_device *nesibdev =
+ container_of(cdev, struct nes_ib_device, ibdev.class_dev);
+ struct nes_vnic *nesvnic = nesibdev->nesvnic;
+
+ nes_debug(NES_DBG_INIT, "\n");
+ return sprintf(buf, "%x.%x.%x\n",
+ (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
+ (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
+ (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
+}
+
+
+/**
+ * show_hca
+ */
+static ssize_t show_hca(struct class_device *cdev, char *buf)
+{
+ nes_debug(NES_DBG_INIT, "\n");
+ return sprintf(buf, "NES020\n");
+}
+
+
+/**
+ * show_board
+ */
+static ssize_t show_board(struct class_device *cdev, char *buf)
+{
+ nes_debug(NES_DBG_INIT, "\n");
+ return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
+}
+
+
+static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
+static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
+static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
+
+static struct class_device_attribute *nes_class_attributes[] = {
+ &class_device_attr_hw_rev,
+ &class_device_attr_fw_ver,
+ &class_device_attr_hca_type,
+ &class_device_attr_board_id
+};
+
+
+/**
+ * nes_query_qp
+ */
+static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_qp_init_attr *init_attr)
+{
+ struct nes_qp *nesqp = to_nesqp(ibqp);
+
+ nes_debug(NES_DBG_QP, "\n");
+
+ attr->qp_access_flags = 0;
+ attr->cap.max_send_wr = nesqp->hwqp.sq_size;
+ attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
+ attr->cap.max_recv_sge = 1;
+ if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
+ init_attr->cap.max_inline_data = 0;
+ } else {
+ init_attr->cap.max_inline_data = 64;
+ }
+
+ init_attr->event_handler = nesqp->ibqp.event_handler;
+ init_attr->qp_context = nesqp->ibqp.qp_context;
+ init_attr->send_cq = nesqp->ibqp.send_cq;
+ init_attr->recv_cq = nesqp->ibqp.recv_cq;
+ init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
+ init_attr->cap = attr->cap;
+
+ return 0;
+}
+
+
+/**
+ * nes_hw_modify_qp
+ */
+int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
+ u32 next_iwarp_state, u32 wait_completion)
+{
+ struct nes_hw_cqp_wqe *cqp_wqe;
+ /* struct iw_cm_id *cm_id = nesqp->cm_id; */
+ /* struct iw_cm_event cm_event; */
+ struct nes_cqp_request *cqp_request;
+ unsigned long flags;
+ int ret;
+ u16 major_code;
+
+ nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
+
+ cqp_request = nes_get_cqp_request(nesdev);
+ if (cqp_request == NULL) {
+ nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
+ return -ENOMEM;
+ }
+ if (wait_completion) {
+ cqp_request->waiting = 1;
+ } else {
+ cqp_request->waiting = 0;
+ }
+ cqp_wqe = &cqp_request->cqp_wqe;
+
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
+ NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
+ nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
+ next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
+ nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
+ set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
+
+ atomic_set(&cqp_request->refcount, 2);
+ nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
+
+ /* Wait for CQP */
+ if (wait_completion) {
+ /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
+ nesqp->hwqp.qp_id); */
+ ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
+ NES_EVENT_TIMEOUT);
+ nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
+ "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
+ nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
+ major_code = cqp_request->major_code;
+ if (major_code) {
+ nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
+ "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
+ nesqp->hwqp.qp_id, cqp_request->major_code,
+ cqp_request->minor_code, next_iwarp_state);
+ }
+ if (atomic_dec_and_test(&cqp_request->refcount)) {
+ if (cqp_request->dynamic) {
+ kfree(cqp_request);
+ } else {
+ spin_lock_irqsave(&nesdev->cqp.lock, flags);
+ list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
+ spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
+ }
+ }
+ if (!ret)
+ return -ETIME;
+ else if (major_code)
+ return -EIO;
+ else
+ return 0;
+ } else {
+ return 0;
+ }
+}
+
+
+/**
+ * nes_modify_qp
+ */
+int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct nes_qp *nesqp = to_nesqp(ibqp);
+ struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ /* u32 cqp_head; */
+ /* u32 counter; */
+ u32 next_iwarp_state = 0;
+ int err;
+ unsigned long qplockflags;
+ int ret;
+ u16 original_last_aeq;
+ u8 issue_modify_qp = 0;
+ u8 issue_disconnect = 0;
+ u8 dont_wait = 0;
+
+ nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
+ " iwarp_state=0x%X, refcount=%d\n",
+ nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
+ nesqp->iwarp_state, atomic_read(&nesqp->refcount));
+
+ nes_add_ref(&nesqp->ibqp);
+ spin_lock_irqsave(&nesqp->lock, qplockflags);
+
+ nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
+ " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
+ nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
+ nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
+
+ if (attr_mask & IB_QP_STATE) {
+ switch (attr->qp_state) {
+ case IB_QPS_INIT:
+ nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
+ nesqp->hwqp.qp_id);
+ if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
+ issue_modify_qp = 1;
+ break;
+ case IB_QPS_RTR:
+ nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
+ nesqp->hwqp.qp_id);
+ if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
+ issue_modify_qp = 1;
+ break;
+ case IB_QPS_RTS:
+ nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
+ nesqp->hwqp.qp_id);
+ if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ if (nesqp->cm_id == NULL) {
+ nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
+ nesqp->hwqp.qp_id );
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
+ if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
+ next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
+ NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
+ issue_modify_qp = 1;
+ nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
+ nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
+ nesqp->hte_added = 1;
+ break;
+ case IB_QPS_SQD:
+ issue_modify_qp = 1;
+ nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
+ nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
+ if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return 0;
+ } else {
+ if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
+ nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
+ " ignored due to current iWARP state\n",
+ nesqp->hwqp.qp_id);
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
+ nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
+ " already done based on hw state.\n",
+ nesqp->hwqp.qp_id);
+ issue_modify_qp = 0;
+ nesqp->in_disconnect = 0;
+ }
+ switch (nesqp->hw_iwarp_state) {
+ case NES_AEQE_IWARP_STATE_CLOSING:
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
+ case NES_AEQE_IWARP_STATE_TERMINATE:
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
+ break;
+ case NES_AEQE_IWARP_STATE_ERROR:
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
+ break;
+ default:
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
+ nesqp->in_disconnect = 1;
+ nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
+ break;
+ }
+ }
+ break;
+ case IB_QPS_SQE:
+ nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
+ nesqp->hwqp.qp_id);
+ if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
+ nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
+ issue_modify_qp = 1;
+ nesqp->in_disconnect = 1;
+ break;
+ case IB_QPS_ERR:
+ case IB_QPS_RESET:
+ if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ }
+ nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
+ nesqp->hwqp.qp_id);
+ next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
+ /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
+ if (nesqp->hte_added) {
+ nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
+ next_iwarp_state |= NES_CQP_QP_DEL_HTE;
+ nesqp->hte_added = 0;
+ }
+ if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
+ (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
+ next_iwarp_state |= NES_CQP_QP_RESET;
+ nesqp->in_disconnect = 1;
+ } else {
+ nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
+ nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
+ dont_wait = 1;
+ }
+ issue_modify_qp = 1;
+ nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
+ break;
+ default:
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_rem_ref(&nesqp->ibqp);
+ return -EINVAL;
+ break;
+ }
+
+ nesqp->ibqp_state = attr->qp_state;
+ if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
+ (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
+ ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
+ (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
+ nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
+ nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
+ nesqp->iwarp_state);
+ issue_disconnect = 1;
+ } else {
+ nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
+ nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
+ nesqp->iwarp_state);
+ }
+ }
+
+ if (attr_mask & IB_QP_ACCESS_FLAGS) {
+ if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
+ NES_QPCONTEXT_MISC_RDMA_READ_EN);
+ issue_modify_qp = 1;
+ }
+ if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
+ issue_modify_qp = 1;
+ }
+ if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
+ issue_modify_qp = 1;
+ }
+ if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
+ issue_modify_qp = 1;
+ }
+
+ if (nesqp->user_mode) {
+ nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
+ NES_QPCONTEXT_MISC_RDMA_READ_EN);
+ issue_modify_qp = 1;
+ }
+ }
+
+ original_last_aeq = nesqp->last_aeq;
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+
+ nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
+
+ ret = 0;
+
+
+ if (issue_modify_qp) {
+ nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
+ ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
+ if (ret)
+ nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
+ " failed for QP%u.\n",
+ next_iwarp_state, nesqp->hwqp.qp_id);
+
+ }
+
+ if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
+ nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
+ " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
+ original_last_aeq, nesqp->last_aeq);
+ if ((!ret) ||
+ ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
+ (ret))) {
+ if (dont_wait) {
+ if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
+ nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
+ " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
+ original_last_aeq, nesqp->last_aeq);
+ /* this one is for the cm_disconnect thread */
+ nes_add_ref(&nesqp->ibqp);
+ spin_lock_irqsave(&nesqp->lock, qplockflags);
+ nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
+ nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_cm_disconn(nesqp);
+ } else {
+ nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
+ nes_rem_ref(&nesqp->ibqp);
+ }
+ } else {
+ spin_lock_irqsave(&nesqp->lock, qplockflags);
+ if (nesqp->cm_id) {
+ /* These two are for the timer thread */
+ if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
+ nes_add_ref(&nesqp->ibqp);
+ nesqp->cm_id->add_ref(nesqp->cm_id);
+ nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
+ " need ae to finish up, original_last_aeq = 0x%04X."
+ " last_aeq = 0x%04X, scheduling timer.\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
+ original_last_aeq, nesqp->last_aeq);
+ schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
+ }
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ } else {
+ spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+ nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
+ " need ae to finish up, original_last_aeq = 0x%04X."
+ " last_aeq = 0x%04X.\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
+ original_last_aeq, nesqp->last_aeq);
+ }
+ }
+ } else {
+ nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
+ " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
+ original_last_aeq, nesqp->last_aeq);
+ nes_rem_ref(&nesqp->ibqp);
+ }
+ } else {
+ nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
+ " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
+ original_last_aeq, nesqp->last_aeq);
+ nes_rem_ref(&nesqp->ibqp);
+ }
+
+ err = 0;
+
+ nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
+ nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
+
+ return err;
+}
+
+
+/**
+ * nes_muticast_attach
+ */
+static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ nes_debug(NES_DBG_INIT, "\n");
+ return -ENOSYS;
+}
+
+
+/**
+ * nes_multicast_detach
+ */
+static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ nes_debug(NES_DBG_INIT, "\n");
+ return -ENOSYS;
+}
+
+
+/**
+ * nes_process_mad
+ */
+static int nes_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)
+{
+ nes_debug(NES_DBG_INIT, "\n");
+ return -ENOSYS;
+}
+
+static inline void
+fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
+{
+ int sge_index;
+ int total_payload_length = 0;
+ for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
+ ib_wr->sg_list[sge_index].addr);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
+ ib_wr->sg_list[sge_index].length);
+ if (uselkey)
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
+ (ib_wr->sg_list[sge_index].lkey));
+ else
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
+
+ total_payload_length += ib_wr->sg_list[sge_index].length;
+ }
+ nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
+ total_payload_length);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
+ total_payload_length);
+}
+
+/**
+ * nes_post_send
+ */
+static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
+ struct ib_send_wr **bad_wr)
+{
+ u64 u64temp;
+ unsigned long flags = 0;
+ struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_qp *nesqp = to_nesqp(ibqp);
+ struct nes_hw_qp_wqe *wqe;
+ int err;
+ u32 qsize = nesqp->hwqp.sq_size;
+ u32 head;
+ u32 wqe_misc;
+ u32 wqe_count;
+ u32 counter;
+ u32 total_payload_length;
+
+ err = 0;
+ wqe_misc = 0;
+ wqe_count = 0;
+ total_payload_length = 0;
+
+ if (nesqp->ibqp_state > IB_QPS_RTS)
+ return -EINVAL;
+
+ spin_lock_irqsave(&nesqp->lock, flags);
+
+ head = nesqp->hwqp.sq_head;
+
+ while (ib_wr) {
+ /* Check for SQ overflow */
+ if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
+ err = -EINVAL;
+ break;
+ }
+
+ wqe = &nesqp->hwqp.sq_vbase[head];
+ /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
+ nesqp->hwqp.qp_id, wqe, head); */
+ nes_fill_init_qp_wqe(wqe, nesqp, head);
+ u64temp = (u64)(ib_wr->wr_id);
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
+ u64temp);
+ switch (ib_wr->opcode) {
+ case IB_WR_SEND:
+ if (ib_wr->send_flags & IB_SEND_SOLICITED) {
+ wqe_misc = NES_IWARP_SQ_OP_SENDSE;
+ } else {
+ wqe_misc = NES_IWARP_SQ_OP_SEND;
+ }
+ if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
+ err = -EINVAL;
+ break;
+ }
+ if (ib_wr->send_flags & IB_SEND_FENCE) {
+ wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
+ }
+ if ((ib_wr->send_flags & IB_SEND_INLINE) &&
+ ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
+ (ib_wr->sg_list[0].length <= 64)) {
+ memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
+ (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
+ ib_wr->sg_list[0].length);
+ wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
+ } else {
+ fill_wqe_sg_send(wqe, ib_wr, 1);
+ }
+
+ break;
+ case IB_WR_RDMA_WRITE:
+ wqe_misc = NES_IWARP_SQ_OP_RDMAW;
+ if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
+ nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
+ ib_wr->num_sge,
+ nesdev->nesadapter->max_sge);
+ err = -EINVAL;
+ break;
+ }
+ if (ib_wr->send_flags & IB_SEND_FENCE) {
+ wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
+ }
+
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
+ ib_wr->wr.rdma.rkey);
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
+ ib_wr->wr.rdma.remote_addr);
+
+ if ((ib_wr->send_flags & IB_SEND_INLINE) &&
+ ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
+ (ib_wr->sg_list[0].length <= 64)) {
+ memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
+ (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
+ ib_wr->sg_list[0].length);
+ wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
+ } else {
+ fill_wqe_sg_send(wqe, ib_wr, 1);
+ }
+ wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
+ wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
+ break;
+ case IB_WR_RDMA_READ:
+ /* iWARP only supports 1 sge for RDMA reads */
+ if (ib_wr->num_sge > 1) {
+ nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
+ ib_wr->num_sge);
+ err = -EINVAL;
+ break;
+ }
+ wqe_misc = NES_IWARP_SQ_OP_RDMAR;
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
+ ib_wr->wr.rdma.remote_addr);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
+ ib_wr->wr.rdma.rkey);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
+ ib_wr->sg_list->length);
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
+ ib_wr->sg_list->addr);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
+ ib_wr->sg_list->lkey);
+ break;
+ default:
+ /* error */
+ err = -EINVAL;
+ break;
+ }
+
+ if (ib_wr->send_flags & IB_SEND_SIGNALED) {
+ wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
+ }
+ wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
+
+ ib_wr = ib_wr->next;
+ head++;
+ wqe_count++;
+ if (head >= qsize)
+ head = 0;
+
+ }
+
+ nesqp->hwqp.sq_head = head;
+ barrier();
+ while (wqe_count) {
+ counter = min(wqe_count, ((u32)255));
+ wqe_count -= counter;
+ nes_write32(nesdev->regs + NES_WQE_ALLOC,
+ (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
+ }
+
+ spin_unlock_irqrestore(&nesqp->lock, flags);
+
+ if (err)
+ *bad_wr = ib_wr;
+ return err;
+}
+
+
+/**
+ * nes_post_recv
+ */
+static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
+ struct ib_recv_wr **bad_wr)
+{
+ u64 u64temp;
+ unsigned long flags = 0;
+ struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_qp *nesqp = to_nesqp(ibqp);
+ struct nes_hw_qp_wqe *wqe;
+ int err = 0;
+ int sge_index;
+ u32 qsize = nesqp->hwqp.rq_size;
+ u32 head;
+ u32 wqe_count = 0;
+ u32 counter;
+ u32 total_payload_length;
+
+ if (nesqp->ibqp_state > IB_QPS_RTS)
+ return -EINVAL;
+
+ spin_lock_irqsave(&nesqp->lock, flags);
+
+ head = nesqp->hwqp.rq_head;
+
+ while (ib_wr) {
+ if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
+ err = -EINVAL;
+ break;
+ }
+ /* Check for RQ overflow */
+ if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
+ err = -EINVAL;
+ break;
+ }
+
+ nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
+ wqe = &nesqp->hwqp.rq_vbase[head];
+
+ /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
+ nesqp->hwqp.qp_id, wqe, head); */
+ nes_fill_init_qp_wqe(wqe, nesqp, head);
+ u64temp = (u64)(ib_wr->wr_id);
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
+ u64temp);
+ total_payload_length = 0;
+ for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
+ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
+ ib_wr->sg_list[sge_index].addr);
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
+ ib_wr->sg_list[sge_index].length);
+ set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
+ ib_wr->sg_list[sge_index].lkey);
+
+ total_payload_length += ib_wr->sg_list[sge_index].length;
+ }
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
+ total_payload_length);
+
+ ib_wr = ib_wr->next;
+ head++;
+ wqe_count++;
+ if (head >= qsize)
+ head = 0;
+ }
+
+ nesqp->hwqp.rq_head = head;
+ barrier();
+ while (wqe_count) {
+ counter = min(wqe_count, ((u32)255));
+ wqe_count -= counter;
+ nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
+ }
+
+ spin_unlock_irqrestore(&nesqp->lock, flags);
+
+ if (err)
+ *bad_wr = ib_wr;
+ return err;
+}
+
+
+/**
+ * nes_poll_cq
+ */
+static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
+{
+ u64 u64temp;
+ u64 wrid;
+ /* u64 u64temp; */
+ unsigned long flags = 0;
+ struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_cq *nescq = to_nescq(ibcq);
+ struct nes_qp *nesqp;
+ struct nes_hw_cqe cqe;
+ u32 head;
+ u32 wq_tail;
+ u32 cq_size;
+ u32 cqe_count = 0;
+ u32 wqe_index;
+ u32 u32temp;
+ /* u32 counter; */
+
+ nes_debug(NES_DBG_CQ, "\n");
+
+ spin_lock_irqsave(&nescq->lock, flags);
+
+ head = nescq->hw_cq.cq_head;
+ cq_size = nescq->hw_cq.cq_size;
+
+ while (cqe_count < num_entries) {
+ if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
+ NES_CQE_VALID) {
+ cqe = nescq->hw_cq.cq_vbase[head];
+ nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
+ u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
+ wqe_index = u32temp &
+ (nesdev->nesadapter->max_qp_wr - 1);
+ u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
+ /* parse CQE, get completion context from WQE (either rq or sq */
+ u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
+ ((u64)u32temp);
+ nesqp = *((struct nes_qp **)&u64temp);
+ memset(entry, 0, sizeof *entry);
+ if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
+ entry->status = IB_WC_SUCCESS;
+ } else {
+ entry->status = IB_WC_WR_FLUSH_ERR;
+ }
+
+ entry->qp = &nesqp->ibqp;
+ entry->src_qp = nesqp->hwqp.qp_id;
+
+ if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
+ if (nesqp->skip_lsmm) {
+ nesqp->skip_lsmm = 0;
+ wq_tail = nesqp->hwqp.sq_tail++;
+ }
+
+ /* Working on a SQ Completion*/
+ wq_tail = wqe_index;
+ nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
+ wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
+ wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
+ ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
+ wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
+ entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
+ wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
+
+ switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
+ wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
+ case NES_IWARP_SQ_OP_RDMAW:
+ nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
+ entry->opcode = IB_WC_RDMA_WRITE;
+ break;
+ case NES_IWARP_SQ_OP_RDMAR:
+ nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
+ entry->opcode = IB_WC_RDMA_READ;
+ entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
+ wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
+ break;
+ case NES_IWARP_SQ_OP_SENDINV:
+ case NES_IWARP_SQ_OP_SENDSEINV:
+ case NES_IWARP_SQ_OP_SEND:
+ case NES_IWARP_SQ_OP_SENDSE:
+ nes_debug(NES_DBG_CQ, "Operation = Send.\n");
+ entry->opcode = IB_WC_SEND;
+ break;
+ }
+ } else {
+ /* Working on a RQ Completion*/
+ wq_tail = wqe_index;
+ nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
+ entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
+ wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
+ ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
+ entry->opcode = IB_WC_RECV;
+ }
+ entry->wr_id = wrid;
+
+ if (++head >= cq_size)
+ head = 0;
+ cqe_count++;
+ nescq->polled_completions++;
+ if ((nescq->polled_completions > (cq_size / 2)) ||
+ (nescq->polled_completions == 255)) {
+ nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
+ " are pending %u of %u.\n",
+ nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
+ nes_write32(nesdev->regs+NES_CQE_ALLOC,
+ nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
+ nescq->polled_completions = 0;
+ }
+ entry++;
+ } else
+ break;
+ }
+
+ if (nescq->polled_completions) {
+ nes_write32(nesdev->regs+NES_CQE_ALLOC,
+ nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
+ nescq->polled_completions = 0;
+ }
+
+ nescq->hw_cq.cq_head = head;
+ nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
+ cqe_count, nescq->hw_cq.cq_number);
+
+ spin_unlock_irqrestore(&nescq->lock, flags);
+
+ return cqe_count;
+}
+
+
+/**
+ * nes_req_notify_cq
+ */
+static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
+ {
+ struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_cq *nescq = to_nescq(ibcq);
+ u32 cq_arm;
+
+ nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
+ nescq->hw_cq.cq_number);
+
+ cq_arm = nescq->hw_cq.cq_number;
+ if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
+ cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
+ else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
+ cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
+ else
+ return -EINVAL;
+
+ nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
+ nes_read32(nesdev->regs+NES_CQE_ALLOC);
+
+ return 0;
+}
+
+
+/**
+ * nes_init_ofa_device
+ */
+struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
+{
+ struct nes_ib_device *nesibdev;
+ struct nes_vnic *nesvnic = netdev_priv(netdev);
+ struct nes_device *nesdev = nesvnic->nesdev;
+
+ nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
+ if (nesibdev == NULL) {
+ return NULL;
+ }
+ strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
+ nesibdev->ibdev.owner = THIS_MODULE;
+
+ nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
+ memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
+ memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
+
+ nesibdev->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_CREATE_AH) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
+ (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_ALLOC_MW) |
+ (1ull << IB_USER_VERBS_CMD_BIND_MW) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
+ (1ull << IB_USER_VERBS_CMD_POST_RECV) |
+ (1ull << IB_USER_VERBS_CMD_POST_SEND);
+
+ nesibdev->ibdev.phys_port_cnt = 1;
+ nesibdev->ibdev.num_comp_vectors = 1;
+ nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
+ nesibdev->ibdev.class_dev.dev = &nesdev->pcidev->dev;
+ nesibdev->ibdev.query_device = nes_query_device;
+ nesibdev->ibdev.query_port = nes_query_port;
+ nesibdev->ibdev.modify_port = nes_modify_port;
+ nesibdev->ibdev.query_pkey = nes_query_pkey;
+ nesibdev->ibdev.query_gid = nes_query_gid;
+ nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
+ nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
+ nesibdev->ibdev.mmap = nes_mmap;
+ nesibdev->ibdev.alloc_pd = nes_alloc_pd;
+ nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
+ nesibdev->ibdev.create_ah = nes_create_ah;
+ nesibdev->ibdev.destroy_ah = nes_destroy_ah;
+ nesibdev->ibdev.create_qp = nes_create_qp;
+ nesibdev->ibdev.modify_qp = nes_modify_qp;
+ nesibdev->ibdev.query_qp = nes_query_qp;
+ nesibdev->ibdev.destroy_qp = nes_destroy_qp;
+ nesibdev->ibdev.create_cq = nes_create_cq;
+ nesibdev->ibdev.destroy_cq = nes_destroy_cq;
+ nesibdev->ibdev.poll_cq = nes_poll_cq;
+ nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
+ nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
+ nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
+ nesibdev->ibdev.dereg_mr = nes_dereg_mr;
+ nesibdev->ibdev.alloc_mw = nes_alloc_mw;
+ nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
+ nesibdev->ibdev.bind_mw = nes_bind_mw;
+
+ nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
+ nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
+ nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
+ nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
+
+ nesibdev->ibdev.attach_mcast = nes_multicast_attach;
+ nesibdev->ibdev.detach_mcast = nes_multicast_detach;
+ nesibdev->ibdev.process_mad = nes_process_mad;
+
+ nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
+ nesibdev->ibdev.post_send = nes_post_send;
+ nesibdev->ibdev.post_recv = nes_post_recv;
+
+ nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
+ if (nesibdev->ibdev.iwcm == NULL) {
+ ib_dealloc_device(&nesibdev->ibdev);
+ return NULL;
+ }
+ nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
+ nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
+ nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
+ nesibdev->ibdev.iwcm->connect = nes_connect;
+ nesibdev->ibdev.iwcm->accept = nes_accept;
+ nesibdev->ibdev.iwcm->reject = nes_reject;
+ nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
+ nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
+
+ return nesibdev;
+}
+
+
+/**
+ * nes_destroy_ofa_device
+ */
+void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
+{
+ if (nesibdev == NULL)
+ return;
+
+ nes_unregister_ofa_device(nesibdev);
+
+ kfree(nesibdev->ibdev.iwcm);
+ ib_dealloc_device(&nesibdev->ibdev);
+}
+
+
+/**
+ * nes_register_ofa_device
+ */
+int nes_register_ofa_device(struct nes_ib_device *nesibdev)
+{
+ struct nes_vnic *nesvnic = nesibdev->nesvnic;
+ struct nes_device *nesdev = nesvnic->nesdev;
+ struct nes_adapter *nesadapter = nesdev->nesadapter;
+ int i, ret;
+
+ ret = ib_register_device(&nesvnic->nesibdev->ibdev);
+ if (ret) {
+ return ret;
+ }
+
+ /* Get the resources allocated to this device */
+ nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
+ nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
+ nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
+ nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
+
+ for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) {
+ ret = class_device_create_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]);
+ if (ret) {
+ while (i > 0) {
+ i--;
+ class_device_remove_file(&nesibdev->ibdev.class_dev,
+ nes_class_attributes[i]);
+ }
+ ib_unregister_device(&nesibdev->ibdev);
+ return ret;
+ }
+ }
+
+ nesvnic->of_device_registered = 1;
+
+ return 0;
+}
+
+
+/**
+ * nes_unregister_ofa_device
+ */
+void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
+{
+ struct nes_vnic *nesvnic = nesibdev->nesvnic;
+ int i;
+
+ if (nesibdev == NULL)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) {
+ class_device_remove_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]);
+ }
+
+ if (nesvnic->of_device_registered) {
+ ib_unregister_device(&nesibdev->ibdev);
+ }
+
+ nesvnic->of_device_registered = 0;
+}