301 lines
7.2 KiB
C
301 lines
7.2 KiB
C
/**************************************************************************
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Copyright (c) 2007, Chelsio Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Neither the name of the Chelsio Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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***************************************************************************/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/pciio.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus_dma.h>
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#include <sys/rman.h>
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#include <sys/ioccom.h>
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#include <sys/mbuf.h>
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#include <sys/rwlock.h>
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#include <sys/linker.h>
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#include <sys/firmware.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/smp.h>
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#include <sys/sysctl.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <sys/proc.h>
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#include <sys/eventhandler.h>
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#include <netinet/in.h>
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#include <netinet/toecore.h>
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#include <rdma/ib_verbs.h>
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#include <linux/idr.h>
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#include <ulp/iw_cxgb/iw_cxgb_ib_intfc.h>
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#ifdef TCP_OFFLOAD
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#include <cxgb_include.h>
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#include <ulp/iw_cxgb/iw_cxgb_wr.h>
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#include <ulp/iw_cxgb/iw_cxgb_hal.h>
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#include <ulp/iw_cxgb/iw_cxgb_provider.h>
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#include <ulp/iw_cxgb/iw_cxgb_cm.h>
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#include <ulp/iw_cxgb/iw_cxgb.h>
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static int iwch_mod_load(void);
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static int iwch_mod_unload(void);
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static int iwch_activate(struct adapter *);
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static int iwch_deactivate(struct adapter *);
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static struct uld_info iwch_uld_info = {
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.uld_id = ULD_IWARP,
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.activate = iwch_activate,
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.deactivate = iwch_deactivate,
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};
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static void
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rnic_init(struct iwch_dev *rnicp)
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{
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idr_init(&rnicp->cqidr);
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idr_init(&rnicp->qpidr);
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idr_init(&rnicp->mmidr);
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mtx_init(&rnicp->lock, "iwch rnic lock", NULL, MTX_DEF|MTX_DUPOK);
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rnicp->attr.vendor_id = 0x168;
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rnicp->attr.vendor_part_id = 7;
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rnicp->attr.max_qps = T3_MAX_NUM_QP - 32;
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rnicp->attr.max_wrs = T3_MAX_QP_DEPTH;
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rnicp->attr.max_sge_per_wr = T3_MAX_SGE;
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rnicp->attr.max_sge_per_rdma_write_wr = T3_MAX_SGE;
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rnicp->attr.max_cqs = T3_MAX_NUM_CQ - 1;
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rnicp->attr.max_cqes_per_cq = T3_MAX_CQ_DEPTH;
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rnicp->attr.max_mem_regs = cxio_num_stags(&rnicp->rdev);
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rnicp->attr.max_phys_buf_entries = T3_MAX_PBL_SIZE;
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rnicp->attr.max_pds = T3_MAX_NUM_PD - 1;
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rnicp->attr.mem_pgsizes_bitmask = T3_PAGESIZE_MASK;
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rnicp->attr.max_mr_size = T3_MAX_MR_SIZE;
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rnicp->attr.can_resize_wq = 0;
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rnicp->attr.max_rdma_reads_per_qp = 8;
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rnicp->attr.max_rdma_read_resources =
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rnicp->attr.max_rdma_reads_per_qp * rnicp->attr.max_qps;
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rnicp->attr.max_rdma_read_qp_depth = 8; /* IRD */
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rnicp->attr.max_rdma_read_depth =
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rnicp->attr.max_rdma_read_qp_depth * rnicp->attr.max_qps;
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rnicp->attr.rq_overflow_handled = 0;
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rnicp->attr.can_modify_ird = 0;
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rnicp->attr.can_modify_ord = 0;
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rnicp->attr.max_mem_windows = rnicp->attr.max_mem_regs - 1;
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rnicp->attr.stag0_value = 1;
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rnicp->attr.zbva_support = 1;
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rnicp->attr.local_invalidate_fence = 1;
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rnicp->attr.cq_overflow_detection = 1;
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return;
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}
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static void
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rnic_uninit(struct iwch_dev *rnicp)
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{
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idr_destroy(&rnicp->cqidr);
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idr_destroy(&rnicp->qpidr);
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idr_destroy(&rnicp->mmidr);
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mtx_destroy(&rnicp->lock);
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}
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static int
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iwch_activate(struct adapter *sc)
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{
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struct iwch_dev *rnicp;
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int rc;
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KASSERT(!isset(&sc->offload_map, MAX_NPORTS),
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("%s: iWARP already activated on %s", __func__,
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device_get_nameunit(sc->dev)));
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rnicp = (struct iwch_dev *)ib_alloc_device(sizeof(*rnicp));
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if (rnicp == NULL)
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return (ENOMEM);
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sc->iwarp_softc = rnicp;
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rnicp->rdev.adap = sc;
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cxio_hal_init(sc);
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iwch_cm_init_cpl(sc);
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rc = cxio_rdev_open(&rnicp->rdev);
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if (rc != 0) {
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printf("Unable to open CXIO rdev\n");
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goto err1;
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}
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rnic_init(rnicp);
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rc = iwch_register_device(rnicp);
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if (rc != 0) {
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printf("Unable to register device\n");
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goto err2;
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}
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return (0);
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err2:
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rnic_uninit(rnicp);
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cxio_rdev_close(&rnicp->rdev);
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err1:
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cxio_hal_uninit(sc);
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iwch_cm_term_cpl(sc);
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sc->iwarp_softc = NULL;
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return (rc);
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}
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static int
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iwch_deactivate(struct adapter *sc)
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{
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struct iwch_dev *rnicp;
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rnicp = sc->iwarp_softc;
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iwch_unregister_device(rnicp);
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rnic_uninit(rnicp);
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cxio_rdev_close(&rnicp->rdev);
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cxio_hal_uninit(sc);
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iwch_cm_term_cpl(sc);
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ib_dealloc_device(&rnicp->ibdev);
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sc->iwarp_softc = NULL;
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return (0);
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}
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static void
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iwch_activate_all(struct adapter *sc, void *arg __unused)
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{
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ADAPTER_LOCK(sc);
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if ((sc->open_device_map & sc->offload_map) != 0 &&
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t3_activate_uld(sc, ULD_IWARP) == 0)
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setbit(&sc->offload_map, MAX_NPORTS);
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ADAPTER_UNLOCK(sc);
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}
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static void
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iwch_deactivate_all(struct adapter *sc, void *arg __unused)
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{
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ADAPTER_LOCK(sc);
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if (isset(&sc->offload_map, MAX_NPORTS) &&
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t3_deactivate_uld(sc, ULD_IWARP) == 0)
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clrbit(&sc->offload_map, MAX_NPORTS);
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ADAPTER_UNLOCK(sc);
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}
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static int
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iwch_mod_load(void)
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{
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int rc;
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rc = iwch_cm_init();
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if (rc != 0)
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return (rc);
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rc = t3_register_uld(&iwch_uld_info);
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if (rc != 0) {
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iwch_cm_term();
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return (rc);
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}
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t3_iterate(iwch_activate_all, NULL);
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return (rc);
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}
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static int
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iwch_mod_unload(void)
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{
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t3_iterate(iwch_deactivate_all, NULL);
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iwch_cm_term();
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if (t3_unregister_uld(&iwch_uld_info) == EBUSY)
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return (EBUSY);
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return (0);
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}
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#endif /* TCP_OFFLOAD */
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#undef MODULE_VERSION
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#include <sys/module.h>
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static int
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iwch_modevent(module_t mod, int cmd, void *arg)
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{
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int rc = 0;
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#ifdef TCP_OFFLOAD
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switch (cmd) {
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case MOD_LOAD:
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rc = iwch_mod_load();
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if(rc)
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printf("iw_cxgb: Chelsio T3 RDMA Driver failed to load\n");
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else
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printf("iw_cxgb: Chelsio T3 RDMA Driver loaded\n");
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break;
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case MOD_UNLOAD:
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rc = iwch_mod_unload();
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if(rc)
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printf("iw_cxgb: Chelsio T3 RDMA Driver failed to unload\n");
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else
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printf("iw_cxgb: Chelsio T3 RDMA Driver unloaded\n");
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break;
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default:
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rc = EINVAL;
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}
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#else
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printf("iw_cxgb: compiled without TCP_OFFLOAD support.\n");
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rc = EOPNOTSUPP;
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#endif
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return (rc);
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}
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static moduledata_t iwch_mod_data = {
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"iw_cxgb",
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iwch_modevent,
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0
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};
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MODULE_VERSION(iw_cxgb, 1);
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DECLARE_MODULE(iw_cxgb, iwch_mod_data, SI_SUB_EXEC, SI_ORDER_ANY);
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MODULE_DEPEND(t3_tom, cxgbc, 1, 1, 1);
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MODULE_DEPEND(iw_cxgb, toecore, 1, 1, 1);
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MODULE_DEPEND(iw_cxgb, t3_tom, 1, 1, 1);
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