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-rw-r--r--sys/dev/cxgbe/iw_cxgbe/provider.c498
1 files changed, 498 insertions, 0 deletions
diff --git a/sys/dev/cxgbe/iw_cxgbe/provider.c b/sys/dev/cxgbe/iw_cxgbe/provider.c
new file mode 100644
index 0000000..2a25ad8
--- /dev/null
+++ b/sys/dev/cxgbe/iw_cxgbe/provider.c
@@ -0,0 +1,498 @@
+/*
+ * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "opt_inet.h"
+
+#ifdef TCP_OFFLOAD
+#include <asm/pgtable.h>
+#include <linux/page.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_user_verbs.h>
+
+#include "iw_cxgbe.h"
+#include "user.h"
+
+static int fastreg_support = 1;
+module_param(fastreg_support, int, 0644);
+MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)");
+
+static int c4iw_modify_port(struct ib_device *ibdev,
+ u8 port, int port_modify_mask,
+ struct ib_port_modify *props)
+{
+ return -ENOSYS;
+}
+
+static struct ib_ah *c4iw_ah_create(struct ib_pd *pd,
+ struct ib_ah_attr *ah_attr)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static int c4iw_ah_destroy(struct ib_ah *ah)
+{
+ return -ENOSYS;
+}
+
+static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ return -ENOSYS;
+}
+
+static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ return -ENOSYS;
+}
+
+static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags,
+ u8 port_num, struct ib_wc *in_wc,
+ struct ib_grh *in_grh, struct ib_mad *in_mad,
+ struct ib_mad *out_mad)
+{
+ return -ENOSYS;
+}
+
+static int c4iw_dealloc_ucontext(struct ib_ucontext *context)
+{
+ struct c4iw_dev *rhp = to_c4iw_dev(context->device);
+ struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
+ struct c4iw_mm_entry *mm, *tmp;
+
+ CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context);
+ list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
+ kfree(mm);
+ c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
+ kfree(ucontext);
+ return 0;
+}
+
+static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct c4iw_ucontext *context;
+ struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
+
+ CTR2(KTR_IW_CXGBE, "%s ibdev %p", __func__, ibdev);
+ context = kzalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
+ return ERR_PTR(-ENOMEM);
+ c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
+ INIT_LIST_HEAD(&context->mmaps);
+ spin_lock_init(&context->mmap_lock);
+ return &context->ibucontext;
+}
+
+static inline pgprot_t t4_pgprot_wc(pgprot_t prot)
+{
+ return pgprot_writecombine(prot);
+}
+
+static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+ int len = vma->vm_end - vma->vm_start;
+ u32 key = vma->vm_pgoff << PAGE_SHIFT;
+ struct c4iw_rdev *rdev;
+ int ret = 0;
+ struct c4iw_mm_entry *mm;
+ struct c4iw_ucontext *ucontext;
+ u64 addr, paddr;
+
+ u64 va_regs_res = 0, va_udbs_res = 0;
+ u64 len_regs_res = 0, len_udbs_res = 0;
+
+ CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma);
+
+ CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__,
+ vma->vm_pgoff, key, len);
+
+ if (vma->vm_start & (PAGE_SIZE-1)) {
+ CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p",
+ __func__, vma->vm_start, vma);
+ return -EINVAL;
+ }
+
+ rdev = &(to_c4iw_dev(context->device)->rdev);
+ ucontext = to_c4iw_ucontext(context);
+
+ mm = remove_mmap(ucontext, key, len);
+ if (!mm) {
+ CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__,
+ ucontext, key, len);
+ return -EINVAL;
+ }
+ addr = mm->addr;
+ kfree(mm);
+
+ va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res);
+ len_regs_res = (u64)rman_get_size(rdev->adap->regs_res);
+ va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res);
+ len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res);
+
+ CTR6(KTR_IW_CXGBE,
+ "%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__,
+ addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res,
+ va_udbs_res+len_udbs_res);
+
+ if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) {
+ CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u",
+ __func__, addr, va_regs_res, len_regs_res);
+ /*
+ * MA_SYNC register...
+ */
+ paddr = vtophys(addr);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ ret = io_remap_pfn_range(vma, vma->vm_start,
+ paddr >> PAGE_SHIFT,
+ len, vma->vm_page_prot);
+ } else {
+
+ if (addr >= va_udbs_res && addr < va_udbs_res + len_udbs_res) {
+ /*
+ * Map user DB or OCQP memory...
+ */
+ paddr = vtophys(addr);
+ CTR4(KTR_IW_CXGBE,
+ "%s:6 USER DB-GTS addr %p region %p, reglen %u",
+ __func__, addr, va_udbs_res, len_udbs_res);
+#ifdef DOT5
+ if (is_t5(rdev->lldi.adapter_type) && map_udb_as_wc)
+ vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
+ else
+#endif
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ ret = io_remap_pfn_range(vma, vma->vm_start,
+ paddr >> PAGE_SHIFT,
+ len, vma->vm_page_prot);
+ } else {
+ /*
+ * Map WQ or CQ contig dma memory...
+ */
+ CTR4(KTR_IW_CXGBE,
+ "%s:7 WQ/CQ addr %p vm_start %u vma %p", __func__,
+ addr, vma->vm_start, vma);
+ ret = io_remap_pfn_range(vma, vma->vm_start,
+ addr >> PAGE_SHIFT,
+ len, vma->vm_page_prot);
+ }
+ }
+ CTR4(KTR_IW_CXGBE, "%s:8 ctx %p vma %p ret %u", __func__, context, vma,
+ ret);
+ return ret;
+}
+
+static int
+c4iw_deallocate_pd(struct ib_pd *pd)
+{
+ struct c4iw_pd *php = to_c4iw_pd(pd);
+ struct c4iw_dev *rhp = php->rhp;
+
+ CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid);
+
+ c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
+ mutex_lock(&rhp->rdev.stats.lock);
+ rhp->rdev.stats.pd.cur--;
+ mutex_unlock(&rhp->rdev.stats.lock);
+ kfree(php);
+
+ return (0);
+}
+
+static struct ib_pd *
+c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct c4iw_pd *php;
+ u32 pdid;
+ struct c4iw_dev *rhp;
+
+ CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev,
+ context, udata);
+ rhp = (struct c4iw_dev *) ibdev;
+ pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table);
+ if (!pdid)
+ return ERR_PTR(-EINVAL);
+ php = kzalloc(sizeof(*php), GFP_KERNEL);
+ if (!php) {
+ c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
+ return ERR_PTR(-ENOMEM);
+ }
+ php->pdid = pdid;
+ php->rhp = rhp;
+ if (context) {
+ if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
+ c4iw_deallocate_pd(&php->ibpd);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+ mutex_lock(&rhp->rdev.stats.lock);
+ rhp->rdev.stats.pd.cur++;
+ if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
+ rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
+ mutex_unlock(&rhp->rdev.stats.lock);
+
+ CTR6(KTR_IW_CXGBE,
+ "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__,
+ ibdev, context, udata, pdid, php);
+ return (&php->ibpd);
+}
+
+static int
+c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
+{
+
+ CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__,
+ ibdev, port, index, pkey);
+
+ *pkey = 0;
+ return (0);
+}
+
+static int
+c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid)
+{
+ struct c4iw_dev *dev;
+ struct port_info *pi;
+ struct adapter *sc;
+
+ CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__,
+ ibdev, port, index, gid);
+
+ memset(&gid->raw[0], 0, sizeof(gid->raw));
+ dev = to_c4iw_dev(ibdev);
+ sc = dev->rdev.adap;
+ if (port == 0 || port > sc->params.nports)
+ return (-EINVAL);
+ pi = sc->port[port - 1];
+ memcpy(&gid->raw[0], pi->hw_addr, sizeof(pi->hw_addr));
+ return (0);
+}
+
+static int
+c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
+{
+ struct c4iw_dev *dev = to_c4iw_dev(ibdev);
+ struct adapter *sc = dev->rdev.adap;
+
+ CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props);
+
+ memset(props, 0, sizeof *props);
+ memcpy(&props->sys_image_guid, sc->port[0]->hw_addr, 6);
+ props->hw_ver = sc->params.chipid;
+ props->fw_ver = sc->params.fw_vers;
+ props->device_cap_flags = dev->device_cap_flags;
+ props->page_size_cap = T4_PAGESIZE_MASK;
+ props->vendor_id = pci_get_vendor(sc->dev);
+ props->vendor_part_id = pci_get_device(sc->dev);
+ props->max_mr_size = T4_MAX_MR_SIZE;
+ props->max_qp = T4_MAX_NUM_QP;
+ props->max_qp_wr = T4_MAX_QP_DEPTH;
+ props->max_sge = T4_MAX_RECV_SGE;
+ props->max_sge_rd = 1;
+ props->max_qp_rd_atom = c4iw_max_read_depth;
+ props->max_qp_init_rd_atom = c4iw_max_read_depth;
+ props->max_cq = T4_MAX_NUM_CQ;
+ props->max_cqe = T4_MAX_CQ_DEPTH;
+ props->max_mr = c4iw_num_stags(&dev->rdev);
+ props->max_pd = T4_MAX_NUM_PD;
+ props->local_ca_ack_delay = 0;
+ props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH;
+
+ return (0);
+}
+
+/*
+ * Returns -errno on failure.
+ */
+static int
+c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
+{
+ struct c4iw_dev *dev;
+ struct adapter *sc;
+ struct port_info *pi;
+ struct ifnet *ifp;
+
+ CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev,
+ port, props);
+
+ dev = to_c4iw_dev(ibdev);
+ sc = dev->rdev.adap;
+ if (port > sc->params.nports)
+ return (-EINVAL);
+ pi = sc->port[port - 1];
+ ifp = pi->ifp;
+
+ memset(props, 0, sizeof(struct ib_port_attr));
+ props->max_mtu = IB_MTU_4096;
+ if (ifp->if_mtu >= 4096)
+ props->active_mtu = IB_MTU_4096;
+ else if (ifp->if_mtu >= 2048)
+ props->active_mtu = IB_MTU_2048;
+ else if (ifp->if_mtu >= 1024)
+ props->active_mtu = IB_MTU_1024;
+ else if (ifp->if_mtu >= 512)
+ props->active_mtu = IB_MTU_512;
+ else
+ props->active_mtu = IB_MTU_256;
+ props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN;
+ props->port_cap_flags =
+ IB_PORT_CM_SUP |
+ IB_PORT_SNMP_TUNNEL_SUP |
+ IB_PORT_REINIT_SUP |
+ IB_PORT_DEVICE_MGMT_SUP |
+ IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
+ props->gid_tbl_len = 1;
+ props->pkey_tbl_len = 1;
+ props->active_width = 2;
+ props->active_speed = 2;
+ props->max_msg_sz = -1;
+
+ return 0;
+}
+
+/*
+ * Returns -errno on error.
+ */
+int
+c4iw_register_device(struct c4iw_dev *dev)
+{
+ struct adapter *sc = dev->rdev.adap;
+ struct ib_device *ibdev = &dev->ibdev;
+ struct iw_cm_verbs *iwcm;
+ int ret;
+
+ CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc);
+ BUG_ON(!sc->port[0]);
+ strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name));
+ memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid));
+ memcpy(&ibdev->node_guid, sc->port[0]->hw_addr, 6);
+ ibdev->owner = THIS_MODULE;
+ dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
+ if (fastreg_support)
+ dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+ ibdev->local_dma_lkey = 0;
+ ibdev->uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_POST_SEND) |
+ (1ull << IB_USER_VERBS_CMD_POST_RECV);
+ ibdev->node_type = RDMA_NODE_RNIC;
+ strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc));
+ ibdev->phys_port_cnt = sc->params.nports;
+ ibdev->num_comp_vectors = 1;
+ ibdev->dma_device = sc->dev;
+ ibdev->query_device = c4iw_query_device;
+ ibdev->query_port = c4iw_query_port;
+ ibdev->modify_port = c4iw_modify_port;
+ ibdev->query_pkey = c4iw_query_pkey;
+ ibdev->query_gid = c4iw_query_gid;
+ ibdev->alloc_ucontext = c4iw_alloc_ucontext;
+ ibdev->dealloc_ucontext = c4iw_dealloc_ucontext;
+ ibdev->mmap = c4iw_mmap;
+ ibdev->alloc_pd = c4iw_allocate_pd;
+ ibdev->dealloc_pd = c4iw_deallocate_pd;
+ ibdev->create_ah = c4iw_ah_create;
+ ibdev->destroy_ah = c4iw_ah_destroy;
+ ibdev->create_qp = c4iw_create_qp;
+ ibdev->modify_qp = c4iw_ib_modify_qp;
+ ibdev->query_qp = c4iw_ib_query_qp;
+ ibdev->destroy_qp = c4iw_destroy_qp;
+ ibdev->create_cq = c4iw_create_cq;
+ ibdev->destroy_cq = c4iw_destroy_cq;
+ ibdev->resize_cq = c4iw_resize_cq;
+ ibdev->poll_cq = c4iw_poll_cq;
+ ibdev->get_dma_mr = c4iw_get_dma_mr;
+ ibdev->reg_phys_mr = c4iw_register_phys_mem;
+ ibdev->rereg_phys_mr = c4iw_reregister_phys_mem;
+ ibdev->reg_user_mr = c4iw_reg_user_mr;
+ ibdev->dereg_mr = c4iw_dereg_mr;
+ ibdev->alloc_mw = c4iw_alloc_mw;
+ ibdev->bind_mw = c4iw_bind_mw;
+ ibdev->dealloc_mw = c4iw_dealloc_mw;
+ ibdev->alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr;
+ ibdev->alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
+ ibdev->free_fast_reg_page_list = c4iw_free_fastreg_pbl;
+ ibdev->attach_mcast = c4iw_multicast_attach;
+ ibdev->detach_mcast = c4iw_multicast_detach;
+ ibdev->process_mad = c4iw_process_mad;
+ ibdev->req_notify_cq = c4iw_arm_cq;
+ ibdev->post_send = c4iw_post_send;
+ ibdev->post_recv = c4iw_post_receive;
+ ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
+
+ iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL);
+ if (iwcm == NULL)
+ return (-ENOMEM);
+
+ iwcm->connect = c4iw_connect;
+ iwcm->accept = c4iw_accept_cr;
+ iwcm->reject = c4iw_reject_cr;
+ iwcm->create_listen = c4iw_create_listen;
+ iwcm->destroy_listen = c4iw_destroy_listen;
+ iwcm->add_ref = c4iw_qp_add_ref;
+ iwcm->rem_ref = c4iw_qp_rem_ref;
+ iwcm->get_qp = c4iw_get_qp;
+ ibdev->iwcm = iwcm;
+
+ ret = ib_register_device(&dev->ibdev, NULL);
+ if (ret)
+ kfree(iwcm);
+
+ return (ret);
+}
+
+void
+c4iw_unregister_device(struct c4iw_dev *dev)
+{
+
+ CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev,
+ dev->rdev.adap);
+ ib_unregister_device(&dev->ibdev);
+ kfree(dev->ibdev.iwcm);
+ return;
+}
+#endif
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