// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2015 - 2021 Intel Corporation */
#include "main.h"
/**
* irdma_query_device - get device attributes
* @ibdev: device pointer from stack
* @props: returning device attributes
* @udata: user data
*/
static int irdma_query_device(struct ib_device *ibdev,
struct ib_device_attr *props,
struct ib_udata *udata)
{
struct irdma_device *iwdev = to_iwdev(ibdev);
struct irdma_pci_f *rf = iwdev->rf;
struct pci_dev *pcidev = iwdev->rf->pcidev;
struct irdma_hw_attrs *hw_attrs = &rf->sc_dev.hw_attrs;
if (udata->inlen || udata->outlen)
return -EINVAL;
memset(props, 0, sizeof(*props));
addrconf_addr_eui48((u8 *)&props->sys_image_guid,
iwdev->netdev->dev_addr);
props->fw_ver = (u64)irdma_fw_major_ver(&rf->sc_dev) << 32 |
irdma_fw_minor_ver(&rf->sc_dev);
props->device_cap_flags = IB_DEVICE_MEM_WINDOW |
IB_DEVICE_MEM_MGT_EXTENSIONS;
props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
props->vendor_id = pcidev->vendor;
props->vendor_part_id = pcidev->device;
props->hw_ver = rf->pcidev->revision;
props->page_size_cap = hw_attrs->page_size_cap;
props->max_mr_size = hw_attrs->max_mr_size;
props->max_qp = rf->max_qp - rf->used_qps;
props->max_qp_wr = hw_attrs->max_qp_wr;
props->max_send_sge = hw_attrs->uk_attrs.max_hw_wq_frags;
props->max_recv_sge = hw_attrs->uk_attrs.max_hw_wq_frags;
props->max_cq = rf->max_cq - rf->used_cqs;
props->max_cqe = rf->max_cqe - 1;
props->max_mr = rf->max_mr - rf->used_mrs;
props->max_mw = props->max_mr;
props->max_pd = rf->max_pd - rf->used_pds;
props->max_sge_rd = hw_attrs->uk_attrs.max_hw_read_sges;
props->max_qp_rd_atom = hw_attrs->max_hw_ird;
props->max_qp_init_rd_atom = hw_attrs->max_hw_ord;
if (rdma_protocol_roce(ibdev, 1)) {
props->device_cap_flags |= IB_DEVICE_RC_RNR_NAK_GEN;
props->max_pkeys = IRDMA_PKEY_TBL_SZ;
}
props->max_ah = rf->max_ah;
props->max_mcast_grp = rf->max_mcg;
props->max_mcast_qp_attach = IRDMA_MAX_MGS_PER_CTX;
props->max_total_mcast_qp_attach = rf->max_qp * IRDMA_MAX_MGS_PER_CTX;
props->max_fast_reg_page_list_len = IRDMA_MAX_PAGES_PER_FMR;
#define HCA_CLOCK_TIMESTAMP_MASK 0x1ffff
if (hw_attrs->uk_attrs.hw_rev >= IRDMA_GEN_2)
props->timestamp_mask = HCA_CLOCK_TIMESTAMP_MASK;
return 0;
}
/**
* irdma_query_port - get port attributes
* @ibdev: device pointer from stack
* @port: port number for query
* @props: returning device attributes
*/
static int irdma_query_port(struct ib_device *ibdev, u32 port,
struct ib_port_attr *props)
{
struct irdma_device *iwdev = to_iwdev(ibdev);
struct net_device *netdev = iwdev->netdev;
/* no need to zero out pros here. done by caller */
props->max_mtu = IB_MTU_4096;
props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
props->lid = 1;
props->lmc = 0;
props->sm_lid = 0;
props->sm_sl = 0;
if (netif_carrier_ok(netdev) && netif_running(netdev)) {
props->state = IB_PORT_ACTIVE;
props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
} else {
props->state = IB_PORT_DOWN;
props->phys_state = IB_PORT_PHYS_STATE_DISABLED;
}
ib_get_eth_speed(ibdev, port, &props->active_speed,
&props->active_width);
if (rdma_protocol_roce(ibdev, 1)) {
props->gid_tbl_len = 32;
props->ip_gids = true;
props->pkey_tbl_len = IRDMA_PKEY_TBL_SZ;
} else {
props->gid_tbl_len = 1;
}
props->qkey_viol_cntr = 0;
props->port_cap_flags |= IB_PORT_CM_SUP | IB_PORT_REINIT_SUP;
props->max_msg_sz = iwdev->rf->sc_dev.hw_attrs.max_hw_outbound_msg_size;
return 0;
}
/**
* irdma_disassociate_ucontext - Disassociate user context
* @context: ib user context
*/
static void irdma_disassociate_ucontext(struct ib_ucontext *context)
{
}
static int irdma_mmap_legacy(struct irdma_ucontext *ucontext,
struct vm_area_struct *vma)
{
u64 pfn;
if (vma->vm_pgoff || vma->vm_end - vma->vm_start != PAGE_SIZE)
return -EINVAL;
vma->vm_private_data = ucontext;
pfn = ((uintptr_t)ucontext->iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET] +
pci_resource_start(ucontext->iwdev->rf->pcidev, 0)) >> PAGE_SHIFT;
return rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn, PAGE_SIZE,
pgprot_noncached(vma->vm_page_prot), NULL);
}
static void irdma_mmap_free(struct rdma_user_mmap_entry *rdma_entry)
{
struct irdma_user_mmap_entry *entry = to_irdma_mmap_entry(rdma_entry);
kfree(entry);
}
static struct rdma_user_mmap_entry*
irdma_user_mmap_entry_insert(struct irdma_ucontext *ucontext, u64 bar_offset,
enum irdma_mmap_flag mmap_flag, u64 *mmap_offset)
{
struct irdma_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL);
int ret;
if (!entry)
return NULL;
entry->bar_offset = bar_offset;
entry->mmap_flag = mmap_flag;
ret = rdma_user_mmap_entry_insert(&ucontext->ibucontext,
&entry->rdma_entry, PAGE_SIZE);
if (ret) {
kfree(entry);
return NULL;
}
*mmap_offset = rdma_user_mmap_get_offset(&entry->rdma_entry);
return &entry->rdma_entry;
}
/**
* irdma_mmap - user memory map
* @context: context created during alloc
* @vma: kernel info for user memory map
*/
static int irdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
struct rdma_user_mmap_entry *rdma_entry;
struct irdma_user_mmap_entry *entry;
struct irdma_ucontext *ucontext;
u64 pfn;
int ret;
ucontext = to_ucontext(context);
/* Legacy support for libi40iw with hard-coded mmap key */
if (ucontext->legacy_mode)
return irdma_mmap_legacy(ucontext, vma);
rdma_entry = rdma_user_mmap_entry_get(&ucontext->ibucontext, vma);
if (!rdma_entry) {
ibdev_dbg(&ucontext->iwdev->ibdev,
"VERBS: pgoff[0x%lx] does not have valid entry\n",
vma->vm_pgoff);
return -EINVAL;
}
entry = to_irdma_mmap_entry(rdma_entry);
ibdev_dbg(&ucontext->iwdev->ibdev,
"VERBS: bar_offset [0x%llx] mmap_flag [%d]\n",
entry->bar_offset, entry->mmap_flag);
pfn = (entry->bar_offset +
pci_resource_start(ucontext->iwdev->rf->pcidev, 0)) >> PAGE_SHIFT;
switch (entry->mmap_flag) {
case IRDMA_MMAP_IO_NC:
ret = rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE,
pgprot_noncached(vma->vm_page_prot),
rdma_entry);
break;
case IRDMA_MMAP_IO_WC:
ret = rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE,
pgprot_writecombine(vma->vm_page_prot),
rdma_entry);
break;
default:
ret = -EINVAL;
}
if (ret)
ibdev_dbg(&ucontext->iwdev->ibdev,
"VERBS: bar_offset [0x%llx] mmap_flag[%d] err[%d]\n",
entry->bar_offset, entry->mmap_flag, ret);
rdma_user_mmap_entry_put(rdma_entry);
return ret;
}
/**
* irdma_alloc_push_page - allocate a push page for qp
* @iwqp: qp pointer
*/
static void irdma_alloc_push_page(struct irdma_qp *iwqp)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_sc_qp *qp = &iwqp->sc_qp;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = IRDMA_OP_MANAGE_PUSH_PAGE;
cqp_info->post_sq = 1;
cqp_info->in.u.manage_push_page.info.push_idx = 0;
cqp_info->in.u.manage_push_page.info.qs_handle =
qp->vsi->qos[qp->user_pri].qs_handle;
cqp_info->in.u.manage_push_page.info.free_page = 0;
cqp_info->in.u.manage_push_page.info.push_page_type = 0;
cqp_info->in.u.manage_push_page.cqp = &iwdev->rf->cqp.sc_cqp;
cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
if (!status && cqp_request->compl_info.op_ret_val <
iwdev->rf->sc_dev.hw_attrs.max_hw_device_pages) {
qp->push_idx = cqp_request->compl_info.op_ret_val;
qp->push_offset = 0;
}
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
}
/**
* irdma_alloc_ucontext - Allocate the user context data structure
* @uctx: uverbs context pointer
* @udata: user data
*
* This keeps track of all objects associated with a particular
* user-mode client.
*/
static int irdma_alloc_ucontext(struct ib_ucontext *uctx,
struct ib_udata *udata)
{
#define IRDMA_ALLOC_UCTX_MIN_REQ_LEN offsetofend(struct irdma_alloc_ucontext_req, rsvd8)
#define IRDMA_ALLOC_UCTX_MIN_RESP_LEN offsetofend(struct irdma_alloc_ucontext_resp, rsvd)
struct ib_device *ibdev = uctx->device;
struct irdma_device *iwdev = to_iwdev(ibdev);
struct irdma_alloc_ucontext_req req = {};
struct irdma_alloc_ucontext_resp uresp = {};
struct irdma_ucontext *ucontext = to_ucontext(uctx);
struct irdma_uk_attrs *uk_attrs = &iwdev->rf->sc_dev.hw_attrs.uk_attrs;
if (udata->inlen < IRDMA_ALLOC_UCTX_MIN_REQ_LEN ||
udata->outlen < IRDMA_ALLOC_UCTX_MIN_RESP_LEN)
return -EINVAL;
if (ib_copy_from_udata(&req, udata, min(sizeof(req), udata->inlen)))
return -EINVAL;
if (req.userspace_ver < 4 || req.userspace_ver > IRDMA_ABI_VER)
goto ver_error;
ucontext->iwdev = iwdev;
ucontext->abi_ver = req.userspace_ver;
if (req.comp_mask & IRDMA_ALLOC_UCTX_USE_RAW_ATTR)
ucontext->use_raw_attrs = true;
/* GEN_1 legacy support with libi40iw */
if (udata->outlen == IRDMA_ALLOC_UCTX_MIN_RESP_LEN) {
if (uk_attrs->hw_rev != IRDMA_GEN_1)
return -EOPNOTSUPP;
ucontext->legacy_mode = true;
uresp.max_qps = iwdev->rf->max_qp;
uresp.max_pds = iwdev->rf->sc_dev.hw_attrs.max_hw_pds;
uresp.wq_size = iwdev->rf->sc_dev.hw_attrs.max_qp_wr * 2;
uresp.kernel_ver = req.userspace_ver;
if (ib_copy_to_udata(udata, &uresp,
min(sizeof(uresp), udata->outlen)))
return -EFAULT;
} else {
u64 bar_off = (uintptr_t)iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET];
ucontext->db_mmap_entry =
irdma_user_mmap_entry_insert(ucontext, bar_off,
IRDMA_MMAP_IO_NC,
&uresp.db_mmap_key);
if (!ucontext->db_mmap_entry)
return -ENOMEM;
uresp.kernel_ver = IRDMA_ABI_VER;
uresp.feature_flags = uk_attrs->feature_flags;
uresp.max_hw_wq_frags = uk_attrs->max_hw_wq_frags;
uresp.max_hw_read_sges = uk_attrs->max_hw_read_sges;
uresp.max_hw_inline = uk_attrs->max_hw_inline;
uresp.max_hw_rq_quanta = uk_attrs->max_hw_rq_quanta;
uresp.max_hw_wq_quanta = uk_attrs->max_hw_wq_quanta;
uresp.max_hw_sq_chunk = uk_attrs->max_hw_sq_chunk;
uresp.max_hw_cq_size = uk_attrs->max_hw_cq_size;
uresp.min_hw_cq_size = uk_attrs->min_hw_cq_size;
uresp.hw_rev = uk_attrs->hw_rev;
uresp.comp_mask |= IRDMA_ALLOC_UCTX_USE_RAW_ATTR;
uresp.min_hw_wq_size = uk_attrs->min_hw_wq_size;
uresp.comp_mask |= IRDMA_ALLOC_UCTX_MIN_HW_WQ_SIZE;
if (ib_copy_to_udata(udata, &uresp,
min(sizeof(uresp), udata->outlen))) {
rdma_user_mmap_entry_remove(ucontext->db_mmap_entry);
return -EFAULT;
}
}
INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
spin_lock_init(&ucontext->cq_reg_mem_list_lock);
INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
spin_lock_init(&ucontext->qp_reg_mem_list_lock);
return 0;
ver_error:
ibdev_err(&iwdev->ibdev,
"Invalid userspace driver version detected. Detected version %d, should be %d\n",
req.userspace_ver, IRDMA_ABI_VER);
return -EINVAL;
}
/**
* irdma_dealloc_ucontext - deallocate the user context data structure
* @context: user context created during alloc
*/
static void irdma_dealloc_ucontext(struct ib_ucontext *context)
{
struct irdma_ucontext *ucontext = to_ucontext(context);
rdma_user_mmap_entry_remove(ucontext->db_mmap_entry);
}
/**
* irdma_alloc_pd - allocate protection domain
* @pd: PD pointer
* @udata: user data
*/
static int irdma_alloc_pd(struct ib_pd *pd, struct ib_udata *udata)
{
#define IRDMA_ALLOC_PD_MIN_RESP_LEN offsetofend(struct irdma_alloc_pd_resp, rsvd)
struct irdma_pd *iwpd = to_iwpd(pd);
struct irdma_device *iwdev = to_iwdev(pd->device);
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
struct irdma_pci_f *rf = iwdev->rf;
struct irdma_alloc_pd_resp uresp = {};
struct irdma_sc_pd *sc_pd;
u32 pd_id = 0;
int err;
if (udata && udata->outlen < IRDMA_ALLOC_PD_MIN_RESP_LEN)
return -EINVAL;
err = irdma_alloc_rsrc(rf, rf->allocated_pds, rf->max_pd, &pd_id,
&rf->next_pd);
if (err)
return err;
sc_pd = &iwpd->sc_pd;
if (udata) {
struct irdma_ucontext *ucontext =
rdma_udata_to_drv_context(udata, struct irdma_ucontext,
ibucontext);
irdma_sc_pd_init(dev, sc_pd, pd_id, ucontext->abi_ver);
uresp.pd_id = pd_id;
if (ib_copy_to_udata(udata, &uresp,
min(sizeof(uresp), udata->outlen))) {
err = -EFAULT;
goto error;
}
} else {
irdma_sc_pd_init(dev, sc_pd, pd_id, IRDMA_ABI_VER);
}
return 0;
error:
irdma_free_rsrc(rf, rf->allocated_pds, pd_id);
return err;
}
/**
* irdma_dealloc_pd - deallocate pd
* @ibpd: ptr of pd to be deallocated
* @udata: user data
*/
static int irdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
{
struct irdma_pd *iwpd = to_iwpd(ibpd);
struct irdma_device *iwdev = to_iwdev(ibpd->device);
irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_pds, iwpd->sc_pd.pd_id);
return 0;
}
/**
* irdma_get_pbl - Retrieve pbl from a list given a virtual
* address
* @va: user virtual address
* @pbl_list: pbl list to search in (QP's or CQ's)
*/
static struct irdma_pbl *irdma_get_pbl(unsigned long va,
struct list_head *pbl_list)
{
struct irdma_pbl *iwpbl;
list_for_each_entry (iwpbl, pbl_list, list) {
if (iwpbl->user_base == va) {
list_del(&iwpbl->list);
iwpbl->on_list = false;
return iwpbl;
}
}
return NULL;
}
/**
* irdma_clean_cqes - clean cq entries for qp
* @iwqp: qp ptr (user or kernel)
* @iwcq: cq ptr
*/
static void irdma_clean_cqes(struct irdma_qp *iwqp, struct irdma_cq *iwcq)
{
struct irdma_cq_uk *ukcq = &iwcq->sc_cq.cq_uk;
unsigned long flags;
spin_lock_irqsave(&iwcq->lock, flags);
irdma_uk_clean_cq(&iwqp->sc_qp.qp_uk, ukcq);
spin_unlock_irqrestore(&iwcq->lock, flags);
}
static void irdma_remove_push_mmap_entries(struct irdma_qp *iwqp)
{
if (iwqp->push_db_mmap_entry) {
rdma_user_mmap_entry_remove(iwqp->push_db_mmap_entry);
iwqp->push_db_mmap_entry = NULL;
}
if (iwqp->push_wqe_mmap_entry) {
rdma_user_mmap_entry_remove(iwqp->push_wqe_mmap_entry);
iwqp->push_wqe_mmap_entry = NULL;
}
}
static int irdma_setup_push_mmap_entries(struct irdma_ucontext *ucontext,
struct irdma_qp *iwqp,
u64 *push_wqe_mmap_key,
u64 *push_db_mmap_key)
{
struct irdma_device *iwdev = ucontext->iwdev;
u64 rsvd, bar_off;
rsvd = IRDMA_PF_BAR_RSVD;
bar_off = (uintptr_t)iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET];
/* skip over db page */
bar_off += IRDMA_HW_PAGE_SIZE;
/* push wqe page */
bar_off += rsvd + iwqp->sc_qp.push_idx * IRDMA_HW_PAGE_SIZE;
iwqp->push_wqe_mmap_entry = irdma_user_mmap_entry_insert(ucontext,
bar_off, IRDMA_MMAP_IO_WC,
push_wqe_mmap_key);
if (!iwqp->push_wqe_mmap_entry)
return -ENOMEM;
/* push doorbell page */
bar_off += IRDMA_HW_PAGE_SIZE;
iwqp->push_db_mmap_entry = irdma_user_mmap_entry_insert(ucontext,
bar_off, IRDMA_MMAP_IO_NC,
push_db_mmap_key);
if (!iwqp->push_db_mmap_entry) {
rdma_user_mmap_entry_remove(iwqp->push_wqe_mmap_entry);
return -ENOMEM;
}
return 0;
}
/**
* irdma_destroy_qp - destroy qp
* @ibqp: qp's ib pointer also to get to device's qp address
* @udata: user data
*/
static int irdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
{
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_device *iwdev = iwqp->iwdev;
iwqp->sc_qp.qp_uk.destroy_pending = true;
if (iwqp->iwarp_state == IRDMA_QP_STATE_RTS)
irdma_modify_qp_to_err(&iwqp->sc_qp);
if (!iwqp->user_mode)
cancel_delayed_work_sync(&iwqp->dwork_flush);
if (!iwqp->user_mode) {
if (iwqp->iwscq) {
irdma_clean_cqes(iwqp, iwqp->iwscq);
if (iwqp->iwrcq != iwqp->iwscq)
irdma_clean_cqes(iwqp, iwqp->iwrcq);
}
}
irdma_qp_rem_ref(&iwqp->ibqp);
wait_for_completion(&iwqp->free_qp);
irdma_free_lsmm_rsrc(iwqp);
irdma_cqp_qp_destroy_cmd(&iwdev->rf->sc_dev, &iwqp->sc_qp);
irdma_remove_push_mmap_entries(iwqp);
irdma_free_qp_rsrc(iwqp);
return 0;
}
/**
* irdma_setup_virt_qp - setup for allocation of virtual qp
* @iwdev: irdma device
* @iwqp: qp ptr
* @init_info: initialize info to return
*/
static void irdma_setup_virt_qp(struct irdma_device *iwdev,
struct irdma_qp *iwqp,
struct irdma_qp_init_info *init_info)
{
struct irdma_pbl *iwpbl = iwqp->iwpbl;
struct irdma_qp_mr *qpmr = &iwpbl->qp_mr;
iwqp->page = qpmr->sq_page;
init_info->shadow_area_pa = qpmr->shadow;
if (iwpbl->pbl_allocated) {
init_info->virtual_map = true;
init_info->sq_pa = qpmr->sq_pbl.idx;
init_info->rq_pa = qpmr->rq_pbl.idx;
} else {
init_info->sq_pa = qpmr->sq_pbl.addr;
init_info->rq_pa = qpmr->rq_pbl.addr;
}
}
/**
* irdma_setup_umode_qp - setup sq and rq size in user mode qp
* @udata: udata
* @iwdev: iwarp device
* @iwqp: qp ptr (user or kernel)
* @info: initialize info to return
* @init_attr: Initial QP create attributes
*/
static int irdma_setup_umode_qp(struct ib_udata *udata,
struct irdma_device *iwdev,
struct irdma_qp *iwqp,
struct irdma_qp_init_info *info,
struct ib_qp_init_attr *init_attr)
{
struct irdma_ucontext *ucontext = rdma_udata_to_drv_context(udata,
struct irdma_ucontext, ibucontext);
struct irdma_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
struct irdma_create_qp_req req;
unsigned long flags;
int ret;
ret = ib_copy_from_udata(&req, udata,
min(sizeof(req), udata->inlen));
if (ret) {
ibdev_dbg(&iwdev->ibdev, "VERBS: ib_copy_from_data fail\n");
return ret;
}
iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
iwqp->user_mode = 1;
if (req.user_wqe_bufs) {
info->qp_uk_init_info.legacy_mode = ucontext->legacy_mode;
spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
iwqp->iwpbl = irdma_get_pbl((unsigned long)req.user_wqe_bufs,
&ucontext->qp_reg_mem_list);
spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
if (!iwqp->iwpbl) {
ret = -ENODATA;
ibdev_dbg(&iwdev->ibdev, "VERBS: no pbl info\n");
return ret;
}
}
if (!ucontext->use_raw_attrs) {
/**
* Maintain backward compat with older ABI which passes sq and
* rq depth in quanta in cap.max_send_wr and cap.max_recv_wr.
* There is no way to compute the correct value of
* iwqp->max_send_wr/max_recv_wr in the kernel.
*/
iwqp->max_send_wr = init_attr->cap.max_send_wr;
iwqp->max_recv_wr = init_attr->cap.max_recv_wr;
ukinfo->sq_size = init_attr->cap.max_send_wr;
ukinfo->rq_size = init_attr->cap.max_recv_wr;
irdma_uk_calc_shift_wq(ukinfo, &ukinfo->sq_shift,
&ukinfo->rq_shift);
} else {
ret = irdma_uk_calc_depth_shift_sq(ukinfo, &ukinfo->sq_depth,
&ukinfo->sq_shift);
if (ret)
return ret;
ret = irdma_uk_calc_depth_shift_rq(ukinfo, &ukinfo->rq_depth,
&ukinfo->rq_shift);
if (ret)
return ret;
iwqp->max_send_wr =
(ukinfo->sq_depth - IRDMA_SQ_RSVD) >> ukinfo->sq_shift;
iwqp->max_recv_wr =
(ukinfo->rq_depth - IRDMA_RQ_RSVD) >> ukinfo->rq_shift;
ukinfo->sq_size = ukinfo->sq_depth >> ukinfo->sq_shift;
ukinfo->rq_size = ukinfo->rq_depth >> ukinfo->rq_shift;
}
irdma_setup_virt_qp(iwdev, iwqp, info);
return 0;
}
/**
* irdma_setup_kmode_qp - setup initialization for kernel mode qp
* @iwdev: iwarp device
* @iwqp: qp ptr (user or kernel)
* @info: initialize info to return
* @init_attr: Initial QP create attributes
*/
static int irdma_setup_kmode_qp(struct irdma_device *iwdev,
struct irdma_qp *iwqp,
struct irdma_qp_init_info *info,
struct ib_qp_init_attr *init_attr)
{
struct irdma_dma_mem *mem = &iwqp->kqp.dma_mem;
u32 size;
int status;
struct irdma_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
status = irdma_uk_calc_depth_shift_sq(ukinfo, &ukinfo->sq_depth,
&ukinfo->sq_shift);
if (status)
return status;
status = irdma_uk_calc_depth_shift_rq(ukinfo, &ukinfo->rq_depth,
&ukinfo->rq_shift);
if (status)
return status;
iwqp->kqp.sq_wrid_mem =
kcalloc(ukinfo->sq_depth, sizeof(*iwqp->kqp.sq_wrid_mem), GFP_KERNEL);
if (!iwqp->kqp.sq_wrid_mem)
return -ENOMEM;
iwqp->kqp.rq_wrid_mem =
kcalloc(ukinfo->rq_depth, sizeof(*iwqp->kqp.rq_wrid_mem), GFP_KERNEL);
if (!iwqp->kqp.rq_wrid_mem) {
kfree(iwqp->kqp.sq_wrid_mem);
iwqp->kqp.sq_wrid_mem = NULL;
return -ENOMEM;
}
ukinfo->sq_wrtrk_array = iwqp->kqp.sq_wrid_mem;
ukinfo->rq_wrid_array = iwqp->kqp.rq_wrid_mem;
size = (ukinfo->sq_depth + ukinfo->rq_depth) * IRDMA_QP_WQE_MIN_SIZE;
size += (IRDMA_SHADOW_AREA_SIZE << 3);
mem->size = ALIGN(size, 256);
mem->va = dma_alloc_coherent(iwdev->rf->hw.device, mem->size,
&mem->pa, GFP_KERNEL);
if (!mem->va) {
kfree(iwqp->kqp.sq_wrid_mem);
iwqp->kqp.sq_wrid_mem = NULL;
kfree(iwqp->kqp.rq_wrid_mem);
iwqp->kqp.rq_wrid_mem = NULL;
return -ENOMEM;
}
ukinfo->sq = mem->va;
info->sq_pa = mem->pa;
ukinfo->rq = &ukinfo->sq[ukinfo->sq_depth];
info->rq_pa = info->sq_pa + (ukinfo->sq_depth * IRDMA_QP_WQE_MIN_SIZE);
ukinfo->shadow_area = ukinfo->rq[ukinfo->rq_depth].elem;
info->shadow_area_pa =
info->rq_pa + (ukinfo->rq_depth * IRDMA_QP_WQE_MIN_SIZE);
ukinfo->sq_size = ukinfo->sq_depth >> ukinfo->sq_shift;
ukinfo->rq_size = ukinfo->rq_depth >> ukinfo->rq_shift;
ukinfo->qp_id = iwqp->ibqp.qp_num;
iwqp->max_send_wr = (ukinfo->sq_depth - IRDMA_SQ_RSVD) >> ukinfo->sq_shift;
iwqp->max_recv_wr = (ukinfo->rq_depth - IRDMA_RQ_RSVD) >> ukinfo->rq_shift;
init_attr->cap.max_send_wr = iwqp->max_send_wr;
init_attr->cap.max_recv_wr = iwqp->max_recv_wr;
return 0;
}
static int irdma_cqp_create_qp_cmd(struct irdma_qp *iwqp)
{
struct irdma_pci_f *rf = iwqp->iwdev->rf;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_create_qp_info *qp_info;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
qp_info = &cqp_request->info.in.u.qp_create.info;
memset(qp_info, 0, sizeof(*qp_info));
qp_info->mac_valid = true;
qp_info->cq_num_valid = true;
qp_info->next_iwarp_state = IRDMA_QP_STATE_IDLE;
cqp_info->cqp_cmd = IRDMA_OP_QP_CREATE;
cqp_info->post_sq = 1;
cqp_info->in.u.qp_create.qp = &iwqp->sc_qp;
cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
static void irdma_roce_fill_and_set_qpctx_info(struct irdma_qp *iwqp,
struct irdma_qp_host_ctx_info *ctx_info)
{
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
struct irdma_roce_offload_info *roce_info;
struct irdma_udp_offload_info *udp_info;
udp_info = &iwqp->udp_info;
udp_info->snd_mss = ib_mtu_enum_to_int(ib_mtu_int_to_enum(iwdev->vsi.mtu));
udp_info->cwnd = iwdev->roce_cwnd;
udp_info->rexmit_thresh = 2;
udp_info->rnr_nak_thresh = 2;
udp_info->src_port = 0xc000;
udp_info->dst_port = ROCE_V2_UDP_DPORT;
roce_info = &iwqp->roce_info;
ether_addr_copy(roce_info->mac_addr, iwdev->netdev->dev_addr);
roce_info->rd_en = true;
roce_info->wr_rdresp_en = true;
roce_info->bind_en = true;
roce_info->dcqcn_en = false;
roce_info->rtomin = 5;
roce_info->ack_credits = iwdev->roce_ackcreds;
roce_info->ird_size = dev->hw_attrs.max_hw_ird;
roce_info->ord_size = dev->hw_attrs.max_hw_ord;
if (!iwqp->user_mode) {
roce_info->priv_mode_en = true;
roce_info->fast_reg_en = true;
roce_info->udprivcq_en = true;
}
roce_info->roce_tver = 0;
ctx_info->roce_info = &iwqp->roce_info;
ctx_info->udp_info = &iwqp->udp_info;
irdma_sc_qp_setctx_roce(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
}
static void irdma_iw_fill_and_set_qpctx_info(struct irdma_qp *iwqp,
struct irdma_qp_host_ctx_info *ctx_info)
{
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
struct irdma_iwarp_offload_info *iwarp_info;
iwarp_info = &iwqp->iwarp_info;
ether_addr_copy(iwarp_info->mac_addr, iwdev->netdev->dev_addr);
iwarp_info->rd_en = true;
iwarp_info->wr_rdresp_en = true;
iwarp_info->bind_en = true;
iwarp_info->ecn_en = true;
iwarp_info->rtomin = 5;
if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
iwarp_info->ib_rd_en = true;
if (!iwqp->user_mode) {
iwarp_info->priv_mode_en = true;
iwarp_info->fast_reg_en = true;
}
iwarp_info->ddp_ver = 1;
iwarp_info->rdmap_ver = 1;
ctx_info->iwarp_info = &iwqp->iwarp_info;
ctx_info->iwarp_info_valid = true;
irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
ctx_info->iwarp_info_valid = false;
}
static int irdma_validate_qp_attrs(struct ib_qp_init_attr *init_attr,
struct irdma_device *iwdev)
{
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
struct irdma_uk_attrs *uk_attrs = &dev->hw_attrs.uk_attrs;
if (init_attr->create_flags)
return -EOPNOTSUPP;
if (init_attr->cap.max_inline_data > uk_attrs->max_hw_inline ||
init_attr->cap.max_send_sge > uk_attrs->max_hw_wq_frags ||
init_attr->cap.max_recv_sge > uk_attrs->max_hw_wq_frags ||
init_attr->cap.max_send_wr > uk_attrs->max_hw_wq_quanta ||
init_attr->cap.max_recv_wr > uk_attrs->max_hw_rq_quanta)
return -EINVAL;
if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
if (init_attr->qp_type != IB_QPT_RC &&
init_attr->qp_type != IB_QPT_UD &&
init_attr->qp_type != IB_QPT_GSI)
return -EOPNOTSUPP;
} else {
if (init_attr->qp_type != IB_QPT_RC)
return -EOPNOTSUPP;
}
return 0;
}
static void irdma_flush_worker(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct irdma_qp *iwqp = container_of(dwork, struct irdma_qp, dwork_flush);
irdma_generate_flush_completions(iwqp);
}
/**
* irdma_create_qp - create qp
* @ibqp: ptr of qp
* @init_attr: attributes for qp
* @udata: user data for create qp
*/
static int irdma_create_qp(struct ib_qp *ibqp,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata)
{
#define IRDMA_CREATE_QP_MIN_REQ_LEN offsetofend(struct irdma_create_qp_req, user_compl_ctx)
#define IRDMA_CREATE_QP_MIN_RESP_LEN offsetofend(struct irdma_create_qp_resp, rsvd)
struct ib_pd *ibpd = ibqp->pd;
struct irdma_pd *iwpd = to_iwpd(ibpd);
struct irdma_device *iwdev = to_iwdev(ibpd->device);
struct irdma_pci_f *rf = iwdev->rf;
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_create_qp_resp uresp = {};
u32 qp_num = 0;
int err_code;
struct irdma_sc_qp *qp;
struct irdma_sc_dev *dev = &rf->sc_dev;
struct irdma_uk_attrs *uk_attrs = &dev->hw_attrs.uk_attrs;
struct irdma_qp_init_info init_info = {};
struct irdma_qp_host_ctx_info *ctx_info;
err_code = irdma_validate_qp_attrs(init_attr, iwdev);
if (err_code)
return err_code;
if (udata && (udata->inlen < IRDMA_CREATE_QP_MIN_REQ_LEN ||
udata->outlen < IRDMA_CREATE_QP_MIN_RESP_LEN))
return -EINVAL;
init_info.vsi = &iwdev->vsi;
init_info.qp_uk_init_info.uk_attrs = uk_attrs;
init_info.qp_uk_init_info.sq_size = init_attr->cap.max_send_wr;
init_info.qp_uk_init_info.rq_size = init_attr->cap.max_recv_wr;
init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data;
qp = &iwqp->sc_qp;
qp->qp_uk.back_qp = iwqp;
qp->push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX;
iwqp->iwdev = iwdev;
iwqp->q2_ctx_mem.size = ALIGN(IRDMA_Q2_BUF_SIZE + IRDMA_QP_CTX_SIZE,
256);
iwqp->q2_ctx_mem.va = dma_alloc_coherent(dev->hw->device,
iwqp->q2_ctx_mem.size,
&iwqp->q2_ctx_mem.pa,
GFP_KERNEL);
if (!iwqp->q2_ctx_mem.va)
return -ENOMEM;
init_info.q2 = iwqp->q2_ctx_mem.va;
init_info.q2_pa = iwqp->q2_ctx_mem.pa;
init_info.host_ctx = (__le64 *)(init_info.q2 + IRDMA_Q2_BUF_SIZE);
init_info.host_ctx_pa = init_info.q2_pa + IRDMA_Q2_BUF_SIZE;
if (init_attr->qp_type == IB_QPT_GSI)
qp_num = 1;
else
err_code = irdma_alloc_rsrc(rf, rf->allocated_qps, rf->max_qp,
&qp_num, &rf->next_qp);
if (err_code)
goto error;
iwqp->iwpd = iwpd;
iwqp->ibqp.qp_num = qp_num;
qp = &iwqp->sc_qp;
iwqp->iwscq = to_iwcq(init_attr->send_cq);
iwqp->iwrcq = to_iwcq(init_attr->recv_cq);
iwqp->host_ctx.va = init_info.host_ctx;
iwqp->host_ctx.pa = init_info.host_ctx_pa;
iwqp->host_ctx.size = IRDMA_QP_CTX_SIZE;
init_info.pd = &iwpd->sc_pd;
init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num;
if (!rdma_protocol_roce(&iwdev->ibdev, 1))
init_info.qp_uk_init_info.first_sq_wq = 1;
iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
init_waitqueue_head(&iwqp->waitq);
init_waitqueue_head(&iwqp->mod_qp_waitq);
if (udata) {
init_info.qp_uk_init_info.abi_ver = iwpd->sc_pd.abi_ver;
err_code = irdma_setup_umode_qp(udata, iwdev, iwqp, &init_info,
init_attr);
} else {
INIT_DELAYED_WORK(&iwqp->dwork_flush, irdma_flush_worker);
init_info.qp_uk_init_info.abi_ver = IRDMA_ABI_VER;
err_code = irdma_setup_kmode_qp(iwdev, iwqp, &init_info, init_attr);
}
if (err_code) {
ibdev_dbg(&iwdev->ibdev, "VERBS: setup qp failed\n");
goto error;
}
if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
if (init_attr->qp_type == IB_QPT_RC) {
init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_ROCE_RC;
init_info.qp_uk_init_info.qp_caps = IRDMA_SEND_WITH_IMM |
IRDMA_WRITE_WITH_IMM |
IRDMA_ROCE;
} else {
init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_ROCE_UD;
init_info.qp_uk_init_info.qp_caps = IRDMA_SEND_WITH_IMM |
IRDMA_ROCE;
}
} else {
init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_IWARP;
init_info.qp_uk_init_info.qp_caps = IRDMA_WRITE_WITH_IMM;
}
if (dev->hw_attrs.uk_attrs.hw_rev > IRDMA_GEN_1)
init_info.qp_uk_init_info.qp_caps |= IRDMA_PUSH_MODE;
err_code = irdma_sc_qp_init(qp, &init_info);
if (err_code) {
ibdev_dbg(&iwdev->ibdev, "VERBS: qp_init fail\n");
goto error;
}
ctx_info = &iwqp->ctx_info;
ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
if (rdma_protocol_roce(&iwdev->ibdev, 1))
irdma_roce_fill_and_set_qpctx_info(iwqp, ctx_info);
else
irdma_iw_fill_and_set_qpctx_info(iwqp, ctx_info);
err_code = irdma_cqp_create_qp_cmd(iwqp);
if (err_code)
goto error;
refcount_set(&iwqp->refcnt, 1);
spin_lock_init(&iwqp->lock);
spin_lock_init(&iwqp->sc_qp.pfpdu.lock);
iwqp->sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
rf->qp_table[qp_num] = iwqp;
if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
if (dev->ws_add(&iwdev->vsi, 0)) {
irdma_cqp_qp_destroy_cmd(&rf->sc_dev, &iwqp->sc_qp);
err_code = -EINVAL;
goto error;
}
irdma_qp_add_qos(&iwqp->sc_qp);
}
if (udata) {
/* GEN_1 legacy support with libi40iw does not have expanded uresp struct */
if (udata->outlen < sizeof(uresp)) {
uresp.lsmm = 1;
uresp.push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX_GEN_1;
} else {
if (rdma_protocol_iwarp(&iwdev->ibdev, 1))
uresp.lsmm = 1;
}
uresp.actual_sq_size = init_info.qp_uk_init_info.sq_size;
uresp.actual_rq_size = init_info.qp_uk_init_info.rq_size;
uresp.qp_id = qp_num;
uresp.qp_caps = qp->qp_uk.qp_caps;
err_code = ib_copy_to_udata(udata, &uresp,
min(sizeof(uresp), udata->outlen));
if (err_code) {
ibdev_dbg(&iwdev->ibdev, "VERBS: copy_to_udata failed\n");
irdma_destroy_qp(&iwqp->ibqp, udata);
return err_code;
}
}
init_completion(&iwqp->free_qp);
return 0;
error:
irdma_free_qp_rsrc(iwqp);
return err_code;
}
static int irdma_get_ib_acc_flags(struct irdma_qp *iwqp)
{
int acc_flags = 0;
if (rdma_protocol_roce(iwqp->ibqp.device, 1)) {
if (iwqp->roce_info.wr_rdresp_en) {
acc_flags |= IB_ACCESS_LOCAL_WRITE;
acc_flags |= IB_ACCESS_REMOTE_WRITE;
}
if (iwqp->roce_info.rd_en)
acc_flags |= IB_ACCESS_REMOTE_READ;
if (iwqp->roce_info.bind_en)
acc_flags |= IB_ACCESS_MW_BIND;
} else {
if (iwqp->iwarp_info.wr_rdresp_en) {
acc_flags |= IB_ACCESS_LOCAL_WRITE;
acc_flags |= IB_ACCESS_REMOTE_WRITE;
}
if (iwqp->iwarp_info.rd_en)
acc_flags |= IB_ACCESS_REMOTE_READ;
if (iwqp->iwarp_info.bind_en)
acc_flags |= IB_ACCESS_MW_BIND;
}
return acc_flags;
}
/**
* irdma_query_qp - query qp attributes
* @ibqp: qp pointer
* @attr: attributes pointer
* @attr_mask: Not used
* @init_attr: qp attributes to return
*/
static int irdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_qp_init_attr *init_attr)
{
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_sc_qp *qp = &iwqp->sc_qp;
memset(attr, 0, sizeof(*attr));
memset(init_attr, 0, sizeof(*init_attr));
attr->qp_state = iwqp->ibqp_state;
attr->cur_qp_state = iwqp->ibqp_state;
attr->cap.max_send_wr = iwqp->max_send_wr;
attr->cap.max_recv_wr = iwqp->max_recv_wr;
attr->cap.max_inline_data = qp->qp_uk.max_inline_data;
attr->cap.max_send_sge = qp->qp_uk.max_sq_frag_cnt;
attr->cap.max_recv_sge = qp->qp_uk.max_rq_frag_cnt;
attr->qp_access_flags = irdma_get_ib_acc_flags(iwqp);
attr->port_num = 1;
if (rdma_protocol_roce(ibqp->device, 1)) {
attr->path_mtu = ib_mtu_int_to_enum(iwqp->udp_info.snd_mss);
attr->qkey = iwqp->roce_info.qkey;
attr->rq_psn = iwqp->udp_info.epsn;
attr->sq_psn = iwqp->udp_info.psn_nxt;
attr->dest_qp_num = iwqp->roce_info.dest_qp;
attr->pkey_index = iwqp->roce_info.p_key;
attr->retry_cnt = iwqp->udp_info.rexmit_thresh;
attr->rnr_retry = iwqp->udp_info.rnr_nak_thresh;
attr->max_rd_atomic = iwqp->roce_info.ord_size;
attr->max_dest_rd_atomic = iwqp->roce_info.ird_size;
}
init_attr->event_handler = iwqp->ibqp.event_handler;
init_attr->qp_context = iwqp->ibqp.qp_context;
init_attr->send_cq = iwqp->ibqp.send_cq;
init_attr->recv_cq = iwqp->ibqp.recv_cq;
init_attr->cap = attr->cap;
return 0;
}
/**
* irdma_query_pkey - Query partition key
* @ibdev: device pointer from stack
* @port: port number
* @index: index of pkey
* @pkey: pointer to store the pkey
*/
static int irdma_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
u16 *pkey)
{
if (index >= IRDMA_PKEY_TBL_SZ)
return -EINVAL;
*pkey = IRDMA_DEFAULT_PKEY;
return 0;
}
static u8 irdma_roce_get_vlan_prio(const struct ib_gid_attr *attr, u8 prio)
{
struct net_device *ndev;
rcu_read_lock();
ndev = rcu_dereference(attr->ndev);
if (!ndev)
goto exit;
if (is_vlan_dev(ndev)) {
u16 vlan_qos = vlan_dev_get_egress_qos_mask(ndev, prio);
prio = (vlan_qos & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
}
exit:
rcu_read_unlock();
return prio;
}
static int irdma_wait_for_suspend(struct irdma_qp *iwqp)
{
if (!wait_event_timeout(iwqp->iwdev->suspend_wq,
!iwqp->suspend_pending,
msecs_to_jiffies(IRDMA_EVENT_TIMEOUT_MS))) {
iwqp->suspend_pending = false;
ibdev_warn(&iwqp->iwdev->ibdev,
"modify_qp timed out waiting for suspend. qp_id = %d, last_ae = 0x%x\n",
iwqp->ibqp.qp_num, iwqp->last_aeq);
return -EBUSY;
}
return 0;
}
/**
* irdma_modify_qp_roce - modify qp request
* @ibqp: qp's pointer for modify
* @attr: access attributes
* @attr_mask: state mask
* @udata: user data
*/
int irdma_modify_qp_roce(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_udata *udata)
{
#define IRDMA_MODIFY_QP_MIN_REQ_LEN offsetofend(struct irdma_modify_qp_req, rq_flush)
#define IRDMA_MODIFY_QP_MIN_RESP_LEN offsetofend(struct irdma_modify_qp_resp, push_valid)
struct irdma_pd *iwpd = to_iwpd(ibqp->pd);
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
struct irdma_qp_host_ctx_info *ctx_info;
struct irdma_roce_offload_info *roce_info;
struct irdma_udp_offload_info *udp_info;
struct irdma_modify_qp_info info = {};
struct irdma_modify_qp_resp uresp = {};
struct irdma_modify_qp_req ureq = {};
unsigned long flags;
u8 issue_modify_qp = 0;
int ret = 0;
ctx_info = &iwqp->ctx_info;
roce_info = &iwqp->roce_info;
udp_info = &iwqp->udp_info;
if (udata) {
/* udata inlen/outlen can be 0 when supporting legacy libi40iw */
if ((udata->inlen && udata->inlen < IRDMA_MODIFY_QP_MIN_REQ_LEN) ||
(udata->outlen && udata->outlen < IRDMA_MODIFY_QP_MIN_RESP_LEN))
return -EINVAL;
}
if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
return -EOPNOTSUPP;
if (attr_mask & IB_QP_DEST_QPN)
roce_info->dest_qp = attr->dest_qp_num;
if (attr_mask & IB_QP_PKEY_INDEX) {
ret = irdma_query_pkey(ibqp->device, 0, attr->pkey_index,
&roce_info->p_key);
if (ret)
return ret;
}
if (attr_mask & IB_QP_QKEY)
roce_info->qkey = attr->qkey;
if (attr_mask & IB_QP_PATH_MTU)
udp_info->snd_mss = ib_mtu_enum_to_int(attr->path_mtu);
if (attr_mask & IB_QP_SQ_PSN) {
udp_info->psn_nxt = attr->sq_psn;
udp_info->lsn = 0xffff;
udp_info->psn_una = attr->sq_psn;
udp_info->psn_max = attr->sq_psn;
}
if (attr_mask & IB_QP_RQ_PSN)
udp_info->epsn = attr->rq_psn;
if (attr_mask & IB_QP_RNR_RETRY)
udp_info->rnr_nak_thresh = attr->rnr_retry;
if (attr_mask & IB_QP_RETRY_CNT)
udp_info->rexmit_thresh = attr->retry_cnt;
ctx_info->roce_info->pd_id = iwpd->sc_pd.pd_id;
if (attr_mask & IB_QP_AV) {
struct irdma_av *av = &iwqp->roce_ah.av;
const struct ib_gid_attr *sgid_attr =
attr->ah_attr.grh.sgid_attr;
u16 vlan_id = VLAN_N_VID;
u32 local_ip[4];
memset(&iwqp->roce_ah, 0, sizeof(iwqp->roce_ah));
if (attr->ah_attr.ah_flags & IB_AH_GRH) {
udp_info->ttl = attr->ah_attr.grh.hop_limit;
udp_info->flow_label = attr->ah_attr.grh.flow_label;
udp_info->tos = attr->ah_attr.grh.traffic_class;
udp_info->src_port =
rdma_get_udp_sport(udp_info->flow_label,
ibqp->qp_num,
roce_info->dest_qp);
irdma_qp_rem_qos(&iwqp->sc_qp);
dev->ws_remove(iwqp->sc_qp.vsi, ctx_info->user_pri);
if (iwqp->sc_qp.vsi->dscp_mode)
ctx_info->user_pri =
iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(udp_info->tos)];
else
ctx_info->user_pri = rt_tos2priority(udp_info->tos);
}
ret = rdma_read_gid_l2_fields(sgid_attr, &vlan_id,
ctx_info->roce_info->mac_addr);
if (ret)
return ret;
ctx_info->user_pri = irdma_roce_get_vlan_prio(sgid_attr,
ctx_info->user_pri);
if (dev->ws_add(iwqp->sc_qp.vsi, ctx_info->user_pri))
return -ENOMEM;
iwqp->sc_qp.user_pri = ctx_info->user_pri;
irdma_qp_add_qos(&iwqp->sc_qp);
if (vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
vlan_id = 0;
if (vlan_id < VLAN_N_VID) {
udp_info->insert_vlan_tag = true;
udp_info->vlan_tag = vlan_id |
ctx_info->user_pri << VLAN_PRIO_SHIFT;
} else {
udp_info->insert_vlan_tag = false;
}
av->attrs = attr->ah_attr;
rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
rdma_gid2ip((struct sockaddr *)&av->dgid_addr, &attr->ah_attr.grh.dgid);
av->net_type = rdma_gid_attr_network_type(sgid_attr);
if (av->net_type == RDMA_NETWORK_IPV6) {
__be32 *daddr =
av->dgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32;
__be32 *saddr =
av->sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32;
irdma_copy_ip_ntohl(&udp_info->dest_ip_addr[0], daddr);
irdma_copy_ip_ntohl(&udp_info->local_ipaddr[0], saddr);
udp_info->ipv4 = false;
irdma_copy_ip_ntohl(local_ip, daddr);
} else if (av->net_type == RDMA_NETWORK_IPV4) {
__be32 saddr = av->sgid_addr.saddr_in.sin_addr.s_addr;
__be32 daddr = av->dgid_addr.saddr_in.sin_addr.s_addr;
local_ip[0] = ntohl(daddr);
udp_info->ipv4 = true;
udp_info->dest_ip_addr[0] = 0;
udp_info->dest_ip_addr[1] = 0;
udp_info->dest_ip_addr[2] = 0;
udp_info->dest_ip_addr[3] = local_ip[0];
udp_info->local_ipaddr[0] = 0;
udp_info->local_ipaddr[1] = 0;
udp_info->local_ipaddr[2] = 0;
udp_info->local_ipaddr[3] = ntohl(saddr);
}
udp_info->arp_idx =
irdma_add_arp(iwdev->rf, local_ip, udp_info->ipv4,
attr->ah_attr.roce.dmac);
}
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
if (attr->max_rd_atomic > dev->hw_attrs.max_hw_ord) {
ibdev_err(&iwdev->ibdev,
"rd_atomic = %d, above max_hw_ord=%d\n",
attr->max_rd_atomic,
dev->hw_attrs.max_hw_ord);
return -EINVAL;
}
if (attr->max_rd_atomic)
roce_info->ord_size = attr->max_rd_atomic;
info.ord_valid = true;
}
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
if (attr->max_dest_rd_atomic > dev->hw_attrs.max_hw_ird) {
ibdev_err(&iwdev->ibdev,
"rd_atomic = %d, above max_hw_ird=%d\n",
attr->max_rd_atomic,
dev->hw_attrs.max_hw_ird);
return -EINVAL;
}
if (attr->max_dest_rd_atomic)
roce_info->ird_size = attr->max_dest_rd_atomic;
}
if (attr_mask & IB_QP_ACCESS_FLAGS) {
if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
roce_info->wr_rdresp_en = true;
if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
roce_info->wr_rdresp_en = true;
if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
roce_info->rd_en = true;
}
wait_event(iwqp->mod_qp_waitq, !atomic_read(&iwqp->hw_mod_qp_pend));
ibdev_dbg(&iwdev->ibdev,
"VERBS: caller: %pS qp_id=%d to_ibqpstate=%d ibqpstate=%d irdma_qpstate=%d attr_mask=0x%x\n",
__builtin_return_address(0), ibqp->qp_num, attr->qp_state,
iwqp->ibqp_state, iwqp->iwarp_state, attr_mask);
spin_lock_irqsave(&iwqp->lock, flags);
if (attr_mask & IB_QP_STATE) {
if (!ib_modify_qp_is_ok(iwqp->ibqp_state, attr->qp_state,
iwqp->ibqp.qp_type, attr_mask)) {
ibdev_warn(&iwdev->ibdev, "modify_qp invalid for qp_id=%d, old_state=0x%x, new_state=0x%x\n",
iwqp->ibqp.qp_num, iwqp->ibqp_state,
attr->qp_state);
ret = -EINVAL;
goto exit;
}
info.curr_iwarp_state = iwqp->iwarp_state;
switch (attr->qp_state) {
case IB_QPS_INIT:
if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) {
ret = -EINVAL;
goto exit;
}
if (iwqp->iwarp_state == IRDMA_QP_STATE_INVALID) {
info.next_iwarp_state = IRDMA_QP_STATE_IDLE;
issue_modify_qp = 1;
}
break;
case IB_QPS_RTR:
if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) {
ret = -EINVAL;
goto exit;
}
info.arp_cache_idx_valid = true;
info.cq_num_valid = true;
info.next_iwarp_state = IRDMA_QP_STATE_RTR;
issue_modify_qp = 1;
break;
case IB_QPS_RTS:
if (iwqp->ibqp_state < IB_QPS_RTR ||
iwqp->ibqp_state == IB_QPS_ERR) {
ret = -EINVAL;
goto exit;
}
info.arp_cache_idx_valid = true;
info.cq_num_valid = true;
info.ord_valid = true;
info.next_iwarp_state = IRDMA_QP_STATE_RTS;
issue_modify_qp = 1;
if (iwdev->push_mode && udata &&
iwqp->sc_qp.push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX &&
dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
spin_unlock_irqrestore(&iwqp->lock, flags);
irdma_alloc_push_page(iwqp);
spin_lock_irqsave(&iwqp->lock, flags);
}
break;
case IB_QPS_SQD:
if (iwqp->iwarp_state == IRDMA_QP_STATE_SQD)
goto exit;
if (iwqp->iwarp_state != IRDMA_QP_STATE_RTS) {
ret = -EINVAL;
goto exit;
}
info.next_iwarp_state = IRDMA_QP_STATE_SQD;
issue_modify_qp = 1;
iwqp->suspend_pending = true;
break;
case IB_QPS_SQE:
case IB_QPS_ERR:
case IB_QPS_RESET:
if (iwqp->iwarp_state == IRDMA_QP_STATE_ERROR) {
spin_unlock_irqrestore(&iwqp->lock, flags);
if (udata && udata->inlen) {
if (ib_copy_from_udata(&ureq, udata,
min(sizeof(ureq), udata->inlen)))
return -EINVAL;
irdma_flush_wqes(iwqp,
(ureq.sq_flush ? IRDMA_FLUSH_SQ : 0) |
(ureq.rq_flush ? IRDMA_FLUSH_RQ : 0) |
IRDMA_REFLUSH);
}
return 0;
}
info.next_iwarp_state = IRDMA_QP_STATE_ERROR;
issue_modify_qp = 1;
break;
default:
ret = -EINVAL;
goto exit;
}
iwqp->ibqp_state = attr->qp_state;
}
ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
irdma_sc_qp_setctx_roce(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
spin_unlock_irqrestore(&iwqp->lock, flags);
if (attr_mask & IB_QP_STATE) {
if (issue_modify_qp) {
ctx_info->rem_endpoint_idx = udp_info->arp_idx;
if (irdma_hw_modify_qp(iwdev, iwqp, &info, true))
return -EINVAL;
if (info.next_iwarp_state == IRDMA_QP_STATE_SQD) {
ret = irdma_wait_for_suspend(iwqp);
if (ret)
return ret;
}
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->iwarp_state == info.curr_iwarp_state) {
iwqp->iwarp_state = info.next_iwarp_state;
iwqp->ibqp_state = attr->qp_state;
}
if (iwqp->ibqp_state > IB_QPS_RTS &&
!iwqp->flush_issued) {
spin_unlock_irqrestore(&iwqp->lock, flags);
irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ |
IRDMA_FLUSH_RQ |
IRDMA_FLUSH_WAIT);
iwqp->flush_issued = 1;
} else {
spin_unlock_irqrestore(&iwqp->lock, flags);
}
} else {
iwqp->ibqp_state = attr->qp_state;
}
if (udata && udata->outlen && dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
struct irdma_ucontext *ucontext;
ucontext = rdma_udata_to_drv_context(udata,
struct irdma_ucontext, ibucontext);
if (iwqp->sc_qp.push_idx != IRDMA_INVALID_PUSH_PAGE_INDEX &&
!iwqp->push_wqe_mmap_entry &&
!irdma_setup_push_mmap_entries(ucontext, iwqp,
&uresp.push_wqe_mmap_key, &uresp.push_db_mmap_key)) {
uresp.push_valid = 1;
uresp.push_offset = iwqp->sc_qp.push_offset;
}
ret = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp),
udata->outlen));
if (ret) {
irdma_remove_push_mmap_entries(iwqp);
ibdev_dbg(&iwdev->ibdev,
"VERBS: copy_to_udata failed\n");
return ret;
}
}
}
return 0;
exit:
spin_unlock_irqrestore(&iwqp->lock, flags);
return ret;
}
/**
* irdma_modify_qp - modify qp request
* @ibqp: qp's pointer for modify
* @attr: access attributes
* @attr_mask: state mask
* @udata: user data
*/
int irdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
struct ib_udata *udata)
{
#define IRDMA_MODIFY_QP_MIN_REQ_LEN offsetofend(struct irdma_modify_qp_req, rq_flush)
#define IRDMA_MODIFY_QP_MIN_RESP_LEN offsetofend(struct irdma_modify_qp_resp, push_valid)
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
struct irdma_qp_host_ctx_info *ctx_info;
struct irdma_tcp_offload_info *tcp_info;
struct irdma_iwarp_offload_info *offload_info;
struct irdma_modify_qp_info info = {};
struct irdma_modify_qp_resp uresp = {};
struct irdma_modify_qp_req ureq = {};
u8 issue_modify_qp = 0;
u8 dont_wait = 0;
int err;
unsigned long flags;
if (udata) {
/* udata inlen/outlen can be 0 when supporting legacy libi40iw */
if ((udata->inlen && udata->inlen < IRDMA_MODIFY_QP_MIN_REQ_LEN) ||
(udata->outlen && udata->outlen < IRDMA_MODIFY_QP_MIN_RESP_LEN))
return -EINVAL;
}
if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
return -EOPNOTSUPP;
ctx_info = &iwqp->ctx_info;
offload_info = &iwqp->iwarp_info;
tcp_info = &iwqp->tcp_info;
wait_event(iwqp->mod_qp_waitq, !atomic_read(&iwqp->hw_mod_qp_pend));
ibdev_dbg(&iwdev->ibdev,
"VERBS: caller: %pS qp_id=%d to_ibqpstate=%d ibqpstate=%d irdma_qpstate=%d last_aeq=%d hw_tcp_state=%d hw_iwarp_state=%d attr_mask=0x%x\n",
__builtin_return_address(0), ibqp->qp_num, attr->qp_state,
iwqp->ibqp_state, iwqp->iwarp_state, iwqp->last_aeq,
iwqp->hw_tcp_state, iwqp->hw_iwarp_state, attr_mask);
spin_lock_irqsave(&iwqp->lock, flags);
if (attr_mask & IB_QP_STATE) {
info.curr_iwarp_state = iwqp->iwarp_state;
switch (attr->qp_state) {
case IB_QPS_INIT:
case IB_QPS_RTR:
if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) {
err = -EINVAL;
goto exit;
}
if (iwqp->iwarp_state == IRDMA_QP_STATE_INVALID) {
info.next_iwarp_state = IRDMA_QP_STATE_IDLE;
issue_modify_qp = 1;
}
if (iwdev->push_mode && udata &&
iwqp->sc_qp.push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX &&
dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
spin_unlock_irqrestore(&iwqp->lock, flags);
irdma_alloc_push_page(iwqp);
spin_lock_irqsave(&iwqp->lock, flags);
}
break;
case IB_QPS_RTS:
if (iwqp->iwarp_state > IRDMA_QP_STATE_RTS ||
!iwqp->cm_id) {
err = -EINVAL;
goto exit;
}
issue_modify_qp = 1;
iwqp->hw_tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
iwqp->hte_added = 1;
info.next_iwarp_state = IRDMA_QP_STATE_RTS;
info.tcp_ctx_valid = true;
info.ord_valid = true;
info.arp_cache_idx_valid = true;
info.cq_num_valid = true;
break;
case IB_QPS_SQD:
if (iwqp->hw_iwarp_state > IRDMA_QP_STATE_RTS) {
err = 0;
goto exit;
}
if (iwqp->iwarp_state == IRDMA_QP_STATE_CLOSING ||
iwqp->iwarp_state < IRDMA_QP_STATE_RTS) {
err = 0;
goto exit;
}
if (iwqp->iwarp_state > IRDMA_QP_STATE_CLOSING) {
err = -EINVAL;
goto exit;
}
info.next_iwarp_state = IRDMA_QP_STATE_CLOSING;
issue_modify_qp = 1;
break;
case IB_QPS_SQE:
if (iwqp->iwarp_state >= IRDMA_QP_STATE_TERMINATE) {
err = -EINVAL;
goto exit;
}
info.next_iwarp_state = IRDMA_QP_STATE_TERMINATE;
issue_modify_qp = 1;
break;
case IB_QPS_ERR:
case IB_QPS_RESET:
if (iwqp->iwarp_state == IRDMA_QP_STATE_ERROR) {
spin_unlock_irqrestore(&iwqp->lock, flags);
if (udata && udata->inlen) {
if (ib_copy_from_udata(&ureq, udata,
min(sizeof(ureq), udata->inlen)))
return -EINVAL;
irdma_flush_wqes(iwqp,
(ureq.sq_flush ? IRDMA_FLUSH_SQ : 0) |
(ureq.rq_flush ? IRDMA_FLUSH_RQ : 0) |
IRDMA_REFLUSH);
}
return 0;
}
if (iwqp->sc_qp.term_flags) {
spin_unlock_irqrestore(&iwqp->lock, flags);
irdma_terminate_del_timer(&iwqp->sc_qp);
spin_lock_irqsave(&iwqp->lock, flags);
}
info.next_iwarp_state = IRDMA_QP_STATE_ERROR;
if (iwqp->hw_tcp_state > IRDMA_TCP_STATE_CLOSED &&
iwdev->iw_status &&
iwqp->hw_tcp_state != IRDMA_TCP_STATE_TIME_WAIT)
info.reset_tcp_conn = true;
else
dont_wait = 1;
issue_modify_qp = 1;
info.next_iwarp_state = IRDMA_QP_STATE_ERROR;
break;
default:
err = -EINVAL;
goto exit;
}
iwqp->ibqp_state = attr->qp_state;
}
if (attr_mask & IB_QP_ACCESS_FLAGS) {
ctx_info->iwarp_info_valid = true;
if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
offload_info->wr_rdresp_en = true;
if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
offload_info->wr_rdresp_en = true;
if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
offload_info->rd_en = true;
}
if (ctx_info->iwarp_info_valid) {
ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
}
spin_unlock_irqrestore(&iwqp->lock, flags);
if (attr_mask & IB_QP_STATE) {
if (issue_modify_qp) {
ctx_info->rem_endpoint_idx = tcp_info->arp_idx;
if (irdma_hw_modify_qp(iwdev, iwqp, &info, true))
return -EINVAL;
}
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->iwarp_state == info.curr_iwarp_state) {
iwqp->iwarp_state = info.next_iwarp_state;
iwqp->ibqp_state = attr->qp_state;
}
spin_unlock_irqrestore(&iwqp->lock, flags);
}
if (issue_modify_qp && iwqp->ibqp_state > IB_QPS_RTS) {
if (dont_wait) {
if (iwqp->hw_tcp_state) {
spin_lock_irqsave(&iwqp->lock, flags);
iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED;
iwqp->last_aeq = IRDMA_AE_RESET_SENT;
spin_unlock_irqrestore(&iwqp->lock, flags);
}
irdma_cm_disconn(iwqp);
} else {
int close_timer_started;
spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags);
if (iwqp->cm_node) {
refcount_inc(&iwqp->cm_node->refcnt);
spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
close_timer_started = atomic_inc_return(&iwqp->close_timer_started);
if (iwqp->cm_id && close_timer_started == 1)
irdma_schedule_cm_timer(iwqp->cm_node,
(struct irdma_puda_buf *)iwqp,
IRDMA_TIMER_TYPE_CLOSE, 1, 0);
irdma_rem_ref_cm_node(iwqp->cm_node);
} else {
spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
}
}
}
if (attr_mask & IB_QP_STATE && udata && udata->outlen &&
dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
struct irdma_ucontext *ucontext;
ucontext = rdma_udata_to_drv_context(udata,
struct irdma_ucontext, ibucontext);
if (iwqp->sc_qp.push_idx != IRDMA_INVALID_PUSH_PAGE_INDEX &&
!iwqp->push_wqe_mmap_entry &&
!irdma_setup_push_mmap_entries(ucontext, iwqp,
&uresp.push_wqe_mmap_key, &uresp.push_db_mmap_key)) {
uresp.push_valid = 1;
uresp.push_offset = iwqp->sc_qp.push_offset;
}
err = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp),
udata->outlen));
if (err) {
irdma_remove_push_mmap_entries(iwqp);
ibdev_dbg(&iwdev->ibdev,
"VERBS: copy_to_udata failed\n");
return err;
}
}
return 0;
exit:
spin_unlock_irqrestore(&iwqp->lock, flags);
return err;
}
/**
* irdma_cq_free_rsrc - free up resources for cq
* @rf: RDMA PCI function
* @iwcq: cq ptr
*/
static void irdma_cq_free_rsrc(struct irdma_pci_f *rf, struct irdma_cq *iwcq)
{
struct irdma_sc_cq *cq = &iwcq->sc_cq;
if (!iwcq->user_mode) {
dma_free_coherent(rf->sc_dev.hw->device, iwcq->kmem.size,
iwcq->kmem.va, iwcq->kmem.pa);
iwcq->kmem.va = NULL;
dma_free_coherent(rf->sc_dev.hw->device,
iwcq->kmem_shadow.size,
iwcq->kmem_shadow.va, iwcq->kmem_shadow.pa);
iwcq->kmem_shadow.va = NULL;
}
irdma_free_rsrc(rf, rf->allocated_cqs, cq->cq_uk.cq_id);
}
/**
* irdma_free_cqbuf - worker to free a cq buffer
* @work: provides access to the cq buffer to free
*/
static void irdma_free_cqbuf(struct work_struct *work)
{
struct irdma_cq_buf *cq_buf = container_of(work, struct irdma_cq_buf, work);
dma_free_coherent(cq_buf->hw->device, cq_buf->kmem_buf.size,
cq_buf->kmem_buf.va, cq_buf->kmem_buf.pa);
cq_buf->kmem_buf.va = NULL;
kfree(cq_buf);
}
/**
* irdma_process_resize_list - remove resized cq buffers from the resize_list
* @iwcq: cq which owns the resize_list
* @iwdev: irdma device
* @lcqe_buf: the buffer where the last cqe is received
*/
static int irdma_process_resize_list(struct irdma_cq *iwcq,
struct irdma_device *iwdev,
struct irdma_cq_buf *lcqe_buf)
{
struct list_head *tmp_node, *list_node;
struct irdma_cq_buf *cq_buf;
int cnt = 0;
list_for_each_safe(list_node, tmp_node, &iwcq->resize_list) {
cq_buf = list_entry(list_node, struct irdma_cq_buf, list);
if (cq_buf == lcqe_buf)
return cnt;
list_del(&cq_buf->list);
queue_work(iwdev->cleanup_wq, &cq_buf->work);
cnt++;
}
return cnt;
}
/**
* irdma_destroy_cq - destroy cq
* @ib_cq: cq pointer
* @udata: user data
*/
static int irdma_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
{
struct irdma_device *iwdev = to_iwdev(ib_cq->device);
struct irdma_cq *iwcq = to_iwcq(ib_cq);
struct irdma_sc_cq *cq = &iwcq->sc_cq;
struct irdma_sc_dev *dev = cq->dev;
struct irdma_sc_ceq *ceq = dev->ceq[cq->ceq_id];
struct irdma_ceq *iwceq = container_of(ceq, struct irdma_ceq, sc_ceq);
unsigned long flags;
spin_lock_irqsave(&iwcq->lock, flags);
if (!list_empty(&iwcq->cmpl_generated))
irdma_remove_cmpls_list(iwcq);
if (!list_empty(&iwcq->resize_list))
irdma_process_resize_list(iwcq, iwdev, NULL);
spin_unlock_irqrestore(&iwcq->lock, flags);
irdma_cq_rem_ref(ib_cq);
wait_for_completion(&iwcq->free_cq);
irdma_cq_wq_destroy(iwdev->rf, cq);
spin_lock_irqsave(&iwceq->ce_lock, flags);
irdma_sc_cleanup_ceqes(cq, ceq);
spin_unlock_irqrestore(&iwceq->ce_lock, flags);
irdma_cq_free_rsrc(iwdev->rf, iwcq);
return 0;
}
/**
* irdma_resize_cq - resize cq
* @ibcq: cq to be resized
* @entries: desired cq size
* @udata: user data
*/
static int irdma_resize_cq(struct ib_cq *ibcq, int entries,
struct ib_udata *udata)
{
#define IRDMA_RESIZE_CQ_MIN_REQ_LEN offsetofend(struct irdma_resize_cq_req, user_cq_buffer)
struct irdma_cq *iwcq = to_iwcq(ibcq);
struct irdma_sc_dev *dev = iwcq->sc_cq.dev;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_modify_cq_info *m_info;
struct irdma_modify_cq_info info = {};
struct irdma_dma_mem kmem_buf;
struct irdma_cq_mr *cqmr_buf;
struct irdma_pbl *iwpbl_buf;
struct irdma_device *iwdev;
struct irdma_pci_f *rf;
struct irdma_cq_buf *cq_buf = NULL;
unsigned long flags;
int ret;
iwdev = to_iwdev(ibcq->device);
rf = iwdev->rf;
if (!(rf->sc_dev.hw_attrs.uk_attrs.feature_flags &
IRDMA_FEATURE_CQ_RESIZE))
return -EOPNOTSUPP;
if (udata && udata->inlen < IRDMA_RESIZE_CQ_MIN_REQ_LEN)
return -EINVAL;
if (entries > rf->max_cqe)
return -EINVAL;
if (!iwcq->user_mode) {
entries++;
if (rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
entries *= 2;
}
info.cq_size = max(entries, 4);
if (info.cq_size == iwcq->sc_cq.cq_uk.cq_size - 1)
return 0;
if (udata) {
struct irdma_resize_cq_req req = {};
struct irdma_ucontext *ucontext =
rdma_udata_to_drv_context(udata, struct irdma_ucontext,
ibucontext);
/* CQ resize not supported with legacy GEN_1 libi40iw */
if (ucontext->legacy_mode)
return -EOPNOTSUPP;
if (ib_copy_from_udata(&req, udata,
min(sizeof(req), udata->inlen)))
return -EINVAL;
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
iwpbl_buf = irdma_get_pbl((unsigned long)req.user_cq_buffer,
&ucontext->cq_reg_mem_list);
spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
if (!iwpbl_buf)
return -ENOMEM;
cqmr_buf = &iwpbl_buf->cq_mr;
if (iwpbl_buf->pbl_allocated) {
info.virtual_map = true;
info.pbl_chunk_size = 1;
info.first_pm_pbl_idx = cqmr_buf->cq_pbl.idx;
} else {
info.cq_pa = cqmr_buf->cq_pbl.addr;
}
} else {
/* Kmode CQ resize */
int rsize;
rsize = info.cq_size * sizeof(struct irdma_cqe);
kmem_buf.size = ALIGN(round_up(rsize, 256), 256);
kmem_buf.va = dma_alloc_coherent(dev->hw->device,
kmem_buf.size, &kmem_buf.pa,
GFP_KERNEL);
if (!kmem_buf.va)
return -ENOMEM;
info.cq_base = kmem_buf.va;
info.cq_pa = kmem_buf.pa;
cq_buf = kzalloc(sizeof(*cq_buf), GFP_KERNEL);
if (!cq_buf) {
ret = -ENOMEM;
goto error;
}
}
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request) {
ret = -ENOMEM;
goto error;
}
info.shadow_read_threshold = iwcq->sc_cq.shadow_read_threshold;
info.cq_resize = true;
cqp_info = &cqp_request->info;
m_info = &cqp_info->in.u.cq_modify.info;
memcpy(m_info, &info, sizeof(*m_info));
cqp_info->cqp_cmd = IRDMA_OP_CQ_MODIFY;
cqp_info->in.u.cq_modify.cq = &iwcq->sc_cq;
cqp_info->in.u.cq_modify.scratch = (uintptr_t)cqp_request;
cqp_info->post_sq = 1;
ret = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
if (ret)
goto error;
spin_lock_irqsave(&iwcq->lock, flags);
if (cq_buf) {
cq_buf->kmem_buf = iwcq->kmem;
cq_buf->hw = dev->hw;
memcpy(&cq_buf->cq_uk, &iwcq->sc_cq.cq_uk, sizeof(cq_buf->cq_uk));
INIT_WORK(&cq_buf->work, irdma_free_cqbuf);
list_add_tail(&cq_buf->list, &iwcq->resize_list);
iwcq->kmem = kmem_buf;
}
irdma_sc_cq_resize(&iwcq->sc_cq, &info);
ibcq->cqe = info.cq_size - 1;
spin_unlock_irqrestore(&iwcq->lock, flags);
return 0;
error:
if (!udata) {
dma_free_coherent(dev->hw->device, kmem_buf.size, kmem_buf.va,
kmem_buf.pa);
kmem_buf.va = NULL;
}
kfree(cq_buf);
return ret;
}
static inline int cq_validate_flags(u32 flags, u8 hw_rev)
{
/* GEN1 does not support CQ create flags */
if (hw_rev == IRDMA_GEN_1)
return flags ? -EOPNOTSUPP : 0;
return flags & ~IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION ? -EOPNOTSUPP : 0;
}
/**
* irdma_create_cq - create cq
* @ibcq: CQ allocated
* @attr: attributes for cq
* @udata: user data
*/
static int irdma_create_cq(struct ib_cq *ibcq,
const struct ib_cq_init_attr *attr,
struct ib_udata *udata)
{
#define IRDMA_CREATE_CQ_MIN_REQ_LEN offsetofend(struct irdma_create_cq_req, user_cq_buf)
#define IRDMA_CREATE_CQ_MIN_RESP_LEN offsetofend(struct irdma_create_cq_resp, cq_size)
struct ib_device *ibdev = ibcq->device;
struct irdma_device *iwdev = to_iwdev(ibdev);
struct irdma_pci_f *rf = iwdev->rf;
struct irdma_cq *iwcq = to_iwcq(ibcq);
u32 cq_num = 0;
struct irdma_sc_cq *cq;
struct irdma_sc_dev *dev = &rf->sc_dev;
struct irdma_cq_init_info info = {};
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
unsigned long flags;
int err_code;
int entries = attr->cqe;
err_code = cq_validate_flags(attr->flags, dev->hw_attrs.uk_attrs.hw_rev);
if (err_code)
return err_code;
if (udata && (udata->inlen < IRDMA_CREATE_CQ_MIN_REQ_LEN ||
udata->outlen < IRDMA_CREATE_CQ_MIN_RESP_LEN))
return -EINVAL;
err_code = irdma_alloc_rsrc(rf, rf->allocated_cqs, rf->max_cq, &cq_num,
&rf->next_cq);
if (err_code)
return err_code;
cq = &iwcq->sc_cq;
cq->back_cq = iwcq;
refcount_set(&iwcq->refcnt, 1);
spin_lock_init(&iwcq->lock);
INIT_LIST_HEAD(&iwcq->resize_list);
INIT_LIST_HEAD(&iwcq->cmpl_generated);
info.dev = dev;
ukinfo->cq_size = max(entries, 4);
ukinfo->cq_id = cq_num;
iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
if (attr->comp_vector < rf->ceqs_count)
info.ceq_id = attr->comp_vector;
info.ceq_id_valid = true;
info.ceqe_mask = 1;
info.type = IRDMA_CQ_TYPE_IWARP;
info.vsi = &iwdev->vsi;
if (udata) {
struct irdma_ucontext *ucontext;
struct irdma_create_cq_req req = {};
struct irdma_cq_mr *cqmr;
struct irdma_pbl *iwpbl;
struct irdma_pbl *iwpbl_shadow;
struct irdma_cq_mr *cqmr_shadow;
iwcq->user_mode = true;
ucontext =
rdma_udata_to_drv_context(udata, struct irdma_ucontext,
ibucontext);
if (ib_copy_from_udata(&req, udata,
min(sizeof(req), udata->inlen))) {
err_code = -EFAULT;
goto cq_free_rsrc;
}
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
iwpbl = irdma_get_pbl((unsigned long)req.user_cq_buf,
&ucontext->cq_reg_mem_list);
spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
if (!iwpbl) {
err_code = -EPROTO;
goto cq_free_rsrc;
}
iwcq->iwpbl = iwpbl;
iwcq->cq_mem_size = 0;
cqmr = &iwpbl->cq_mr;
if (rf->sc_dev.hw_attrs.uk_attrs.feature_flags &
IRDMA_FEATURE_CQ_RESIZE && !ucontext->legacy_mode) {
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
iwpbl_shadow = irdma_get_pbl(
(unsigned long)req.user_shadow_area,
&ucontext->cq_reg_mem_list);
spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
if (!iwpbl_shadow) {
err_code = -EPROTO;
goto cq_free_rsrc;
}
iwcq->iwpbl_shadow = iwpbl_shadow;
cqmr_shadow = &iwpbl_shadow->cq_mr;
info.shadow_area_pa = cqmr_shadow->cq_pbl.addr;
cqmr->split = true;
} else {
info.shadow_area_pa = cqmr->shadow;
}
if (iwpbl->pbl_allocated) {
info.virtual_map = true;
info.pbl_chunk_size = 1;
info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
} else {
info.cq_base_pa = cqmr->cq_pbl.addr;
}
} else {
/* Kmode allocations */
int rsize;
if (entries < 1 || entries > rf->max_cqe) {
err_code = -EINVAL;
goto cq_free_rsrc;
}
entries++;
if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
entries *= 2;
ukinfo->cq_size = entries;
rsize = info.cq_uk_init_info.cq_size * sizeof(struct irdma_cqe);
iwcq->kmem.size = ALIGN(round_up(rsize, 256), 256);
iwcq->kmem.va = dma_alloc_coherent(dev->hw->device,
iwcq->kmem.size,
&iwcq->kmem.pa, GFP_KERNEL);
if (!iwcq->kmem.va) {
err_code = -ENOMEM;
goto cq_free_rsrc;
}
iwcq->kmem_shadow.size = ALIGN(IRDMA_SHADOW_AREA_SIZE << 3,
64);
iwcq->kmem_shadow.va = dma_alloc_coherent(dev->hw->device,
iwcq->kmem_shadow.size,
&iwcq->kmem_shadow.pa,
GFP_KERNEL);
if (!iwcq->kmem_shadow.va) {
err_code = -ENOMEM;
goto cq_free_rsrc;
}
info.shadow_area_pa = iwcq->kmem_shadow.pa;
ukinfo->shadow_area = iwcq->kmem_shadow.va;
ukinfo->cq_base = iwcq->kmem.va;
info.cq_base_pa = iwcq->kmem.pa;
}
info.shadow_read_threshold = min(info.cq_uk_init_info.cq_size / 2,
(u32)IRDMA_MAX_CQ_READ_THRESH);
if (irdma_sc_cq_init(cq, &info)) {
ibdev_dbg(&iwdev->ibdev, "VERBS: init cq fail\n");
err_code = -EPROTO;
goto cq_free_rsrc;
}
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request) {
err_code = -ENOMEM;
goto cq_free_rsrc;
}
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = IRDMA_OP_CQ_CREATE;
cqp_info->post_sq = 1;
cqp_info->in.u.cq_create.cq = cq;
cqp_info->in.u.cq_create.check_overflow = true;
cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
err_code = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
if (err_code)
goto cq_free_rsrc;
if (udata) {
struct irdma_create_cq_resp resp = {};
resp.cq_id = info.cq_uk_init_info.cq_id;
resp.cq_size = info.cq_uk_init_info.cq_size;
if (ib_copy_to_udata(udata, &resp,
min(sizeof(resp), udata->outlen))) {
ibdev_dbg(&iwdev->ibdev,
"VERBS: copy to user data\n");
err_code = -EPROTO;
goto cq_destroy;
}
}
rf->cq_table[cq_num] = iwcq;
init_completion(&iwcq->free_cq);
return 0;
cq_destroy:
irdma_cq_wq_destroy(rf, cq);
cq_free_rsrc:
irdma_cq_free_rsrc(rf, iwcq);
return err_code;
}
/**
* irdma_get_mr_access - get hw MR access permissions from IB access flags
* @access: IB access flags
*/
static inline u16 irdma_get_mr_access(int access)
{
u16 hw_access = 0;
hw_access |= (access & IB_ACCESS_LOCAL_WRITE) ?
IRDMA_ACCESS_FLAGS_LOCALWRITE : 0;
hw_access |= (access & IB_ACCESS_REMOTE_WRITE) ?
IRDMA_ACCESS_FLAGS_REMOTEWRITE : 0;
hw_access |= (access & IB_ACCESS_REMOTE_READ) ?
IRDMA_ACCESS_FLAGS_REMOTEREAD : 0;
hw_access |= (access & IB_ACCESS_MW_BIND) ?
IRDMA_ACCESS_FLAGS_BIND_WINDOW : 0;
hw_access |= (access & IB_ZERO_BASED) ?
IRDMA_ACCESS_FLAGS_ZERO_BASED : 0;
hw_access |= IRDMA_ACCESS_FLAGS_LOCALREAD;
return hw_access;
}
/**
* irdma_free_stag - free stag resource
* @iwdev: irdma device
* @stag: stag to free
*/
static void irdma_free_stag(struct irdma_device *iwdev, u32 stag)
{
u32 stag_idx;
stag_idx = (stag & iwdev->rf->mr_stagmask) >> IRDMA_CQPSQ_STAG_IDX_S;
irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_mrs, stag_idx);
}
/**
* irdma_create_stag - create random stag
* @iwdev: irdma device
*/
static u32 irdma_create_stag(struct irdma_device *iwdev)
{
u32 stag = 0;
u32 stag_index = 0;
u32 next_stag_index;
u32 driver_key;
u32 random;
u8 consumer_key;
int ret;
get_random_bytes(&random, sizeof(random));
consumer_key = (u8)random;
driver_key = random & ~iwdev->rf->mr_stagmask;
next_stag_index = (random & iwdev->rf->mr_stagmask) >> 8;
next_stag_index %= iwdev->rf->max_mr;
ret = irdma_alloc_rsrc(iwdev->rf, iwdev->rf->allocated_mrs,
iwdev->rf->max_mr, &stag_index,
&next_stag_index);
if (ret)
return stag;
stag = stag_index << IRDMA_CQPSQ_STAG_IDX_S;
stag |= driver_key;
stag += (u32)consumer_key;
return stag;
}
/**
* irdma_next_pbl_addr - Get next pbl address
* @pbl: pointer to a pble
* @pinfo: info pointer
* @idx: index
*/
static inline u64 *irdma_next_pbl_addr(u64 *pbl, struct irdma_pble_info **pinfo,
u32 *idx)
{
*idx += 1;
if (!(*pinfo) || *idx != (*pinfo)->cnt)
return ++pbl;
*idx = 0;
(*pinfo)++;
return (*pinfo)->addr;
}
/**
* irdma_copy_user_pgaddrs - copy user page address to pble's os locally
* @iwmr: iwmr for IB's user page addresses
* @pbl: ple pointer to save 1 level or 0 level pble
* @level: indicated level 0, 1 or 2
*/
static void irdma_copy_user_pgaddrs(struct irdma_mr *iwmr, u64 *pbl,
enum irdma_pble_level level)
{
struct ib_umem *region = iwmr->region;
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
struct irdma_pble_info *pinfo;
struct ib_block_iter biter;
u32 idx = 0;
u32 pbl_cnt = 0;
pinfo = (level == PBLE_LEVEL_1) ? NULL : palloc->level2.leaf;
if (iwmr->type == IRDMA_MEMREG_TYPE_QP)
iwpbl->qp_mr.sq_page = sg_page(region->sgt_append.sgt.sgl);
rdma_umem_for_each_dma_block(region, &biter, iwmr->page_size) {
*pbl = rdma_block_iter_dma_address(&biter);
if (++pbl_cnt == palloc->total_cnt)
break;
pbl = irdma_next_pbl_addr(pbl, &pinfo, &idx);
}
}
/**
* irdma_check_mem_contiguous - check if pbls stored in arr are contiguous
* @arr: lvl1 pbl array
* @npages: page count
* @pg_size: page size
*
*/
static bool irdma_check_mem_contiguous(u64 *arr, u32 npages, u32 pg_size)
{
u32 pg_idx;
for (pg_idx = 0; pg_idx < npages; pg_idx++) {
if ((*arr + (pg_size * pg_idx)) != arr[pg_idx])
return false;
}
return true;
}
/**
* irdma_check_mr_contiguous - check if MR is physically contiguous
* @palloc: pbl allocation struct
* @pg_size: page size
*/
static bool irdma_check_mr_contiguous(struct irdma_pble_alloc *palloc,
u32 pg_size)
{
struct irdma_pble_level2 *lvl2 = &palloc->level2;
struct irdma_pble_info *leaf = lvl2->leaf;
u64 *arr = NULL;
u64 *start_addr = NULL;
int i;
bool ret;
if (palloc->level == PBLE_LEVEL_1) {
arr = palloc->level1.addr;
ret = irdma_check_mem_contiguous(arr, palloc->total_cnt,
pg_size);
return ret;
}
start_addr = leaf->addr;
for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) {
arr = leaf->addr;
if ((*start_addr + (i * pg_size * PBLE_PER_PAGE)) != *arr)
return false;
ret = irdma_check_mem_contiguous(arr, leaf->cnt, pg_size);
if (!ret)
return false;
}
return true;
}
/**
* irdma_setup_pbles - copy user pg address to pble's
* @rf: RDMA PCI function
* @iwmr: mr pointer for this memory registration
* @lvl: requested pble levels
*/
static int irdma_setup_pbles(struct irdma_pci_f *rf, struct irdma_mr *iwmr,
u8 lvl)
{
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
struct irdma_pble_info *pinfo;
u64 *pbl;
int status;
enum irdma_pble_level level = PBLE_LEVEL_1;
if (lvl) {
status = irdma_get_pble(rf->pble_rsrc, palloc, iwmr->page_cnt,
lvl);
if (status)
return status;
iwpbl->pbl_allocated = true;
level = palloc->level;
pinfo = (level == PBLE_LEVEL_1) ? &palloc->level1 :
palloc->level2.leaf;
pbl = pinfo->addr;
} else {
pbl = iwmr->pgaddrmem;
}
irdma_copy_user_pgaddrs(iwmr, pbl, level);
if (lvl)
iwmr->pgaddrmem[0] = *pbl;
return 0;
}
/**
* irdma_handle_q_mem - handle memory for qp and cq
* @iwdev: irdma device
* @req: information for q memory management
* @iwpbl: pble struct
* @lvl: pble level mask
*/
static int irdma_handle_q_mem(struct irdma_device *iwdev,
struct irdma_mem_reg_req *req,
struct irdma_pbl *iwpbl, u8 lvl)
{
struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
struct irdma_mr *iwmr = iwpbl->iwmr;
struct irdma_qp_mr *qpmr = &iwpbl->qp_mr;
struct irdma_cq_mr *cqmr = &iwpbl->cq_mr;
struct irdma_hmc_pble *hmc_p;
u64 *arr = iwmr->pgaddrmem;
u32 pg_size, total;
int err = 0;
bool ret = true;
pg_size = iwmr->page_size;
err = irdma_setup_pbles(iwdev->rf, iwmr, lvl);
if (err)
return err;
if (lvl)
arr = palloc->level1.addr;
switch (iwmr->type) {
case IRDMA_MEMREG_TYPE_QP:
total = req->sq_pages + req->rq_pages;
hmc_p = &qpmr->sq_pbl;
qpmr->shadow = (dma_addr_t)arr[total];
if (lvl) {
ret = irdma_check_mem_contiguous(arr, req->sq_pages,
pg_size);
if (ret)
ret = irdma_check_mem_contiguous(&arr[req->sq_pages],
req->rq_pages,
pg_size);
}
if (!ret) {
hmc_p->idx = palloc->level1.idx;
hmc_p = &qpmr->rq_pbl;
hmc_p->idx = palloc->level1.idx + req->sq_pages;
} else {
hmc_p->addr = arr[0];
hmc_p = &qpmr->rq_pbl;
hmc_p->addr = arr[req->sq_pages];
}
break;
case IRDMA_MEMREG_TYPE_CQ:
hmc_p = &cqmr->cq_pbl;
if (!cqmr->split)
cqmr->shadow = (dma_addr_t)arr[req->cq_pages];
if (lvl)
ret = irdma_check_mem_contiguous(arr, req->cq_pages,
pg_size);
if (!ret)
hmc_p->idx = palloc->level1.idx;
else
hmc_p->addr = arr[0];
break;
default:
ibdev_dbg(&iwdev->ibdev, "VERBS: MR type error\n");
err = -EINVAL;
}
if (lvl && ret) {
irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
iwpbl->pbl_allocated = false;
}
return err;
}
/**
* irdma_hw_alloc_mw - create the hw memory window
* @iwdev: irdma device
* @iwmr: pointer to memory window info
*/
static int irdma_hw_alloc_mw(struct irdma_device *iwdev, struct irdma_mr *iwmr)
{
struct irdma_mw_alloc_info *info;
struct irdma_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
info = &cqp_info->in.u.mw_alloc.info;
memset(info, 0, sizeof(*info));
if (iwmr->ibmw.type == IB_MW_TYPE_1)
info->mw_wide = true;
info->page_size = PAGE_SIZE;
info->mw_stag_index = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S;
info->pd_id = iwpd->sc_pd.pd_id;
info->remote_access = true;
cqp_info->cqp_cmd = IRDMA_OP_MW_ALLOC;
cqp_info->post_sq = 1;
cqp_info->in.u.mw_alloc.dev = &iwdev->rf->sc_dev;
cqp_info->in.u.mw_alloc.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
return status;
}
/**
* irdma_alloc_mw - Allocate memory window
* @ibmw: Memory Window
* @udata: user data pointer
*/
static int irdma_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata)
{
struct irdma_device *iwdev = to_iwdev(ibmw->device);
struct irdma_mr *iwmr = to_iwmw(ibmw);
int err_code;
u32 stag;
stag = irdma_create_stag(iwdev);
if (!stag)
return -ENOMEM;
iwmr->stag = stag;
ibmw->rkey = stag;
err_code = irdma_hw_alloc_mw(iwdev, iwmr);
if (err_code) {
irdma_free_stag(iwdev, stag);
return err_code;
}
return 0;
}
/**
* irdma_dealloc_mw - Dealloc memory window
* @ibmw: memory window structure.
*/
static int irdma_dealloc_mw(struct ib_mw *ibmw)
{
struct ib_pd *ibpd = ibmw->pd;
struct irdma_pd *iwpd = to_iwpd(ibpd);
struct irdma_mr *iwmr = to_iwmr((struct ib_mr *)ibmw);
struct irdma_device *iwdev = to_iwdev(ibmw->device);
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_dealloc_stag_info *info;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
info = &cqp_info->in.u.dealloc_stag.info;
memset(info, 0, sizeof(*info));
info->pd_id = iwpd->sc_pd.pd_id;
info->stag_idx = ibmw->rkey >> IRDMA_CQPSQ_STAG_IDX_S;
info->mr = false;
cqp_info->cqp_cmd = IRDMA_OP_DEALLOC_STAG;
cqp_info->post_sq = 1;
cqp_info->in.u.dealloc_stag.dev = &iwdev->rf->sc_dev;
cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
irdma_handle_cqp_op(iwdev->rf, cqp_request);
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
irdma_free_stag(iwdev, iwmr->stag);
return 0;
}
/**
* irdma_hw_alloc_stag - cqp command to allocate stag
* @iwdev: irdma device
* @iwmr: irdma mr pointer
*/
static int irdma_hw_alloc_stag(struct irdma_device *iwdev,
struct irdma_mr *iwmr)
{
struct irdma_allocate_stag_info *info;
struct ib_pd *pd = iwmr->ibmr.pd;
struct irdma_pd *iwpd = to_iwpd(pd);
int status;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
info = &cqp_info->in.u.alloc_stag.info;
memset(info, 0, sizeof(*info));
info->page_size = PAGE_SIZE;
info->stag_idx = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S;
info->pd_id = iwpd->sc_pd.pd_id;
info->total_len = iwmr->len;
info->all_memory = pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY;
info->remote_access = true;
cqp_info->cqp_cmd = IRDMA_OP_ALLOC_STAG;
cqp_info->post_sq = 1;
cqp_info->in.u.alloc_stag.dev = &iwdev->rf->sc_dev;
cqp_info->in.u.alloc_stag.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
if (status)
return status;
iwmr->is_hwreg = 1;
return 0;
}
/**
* irdma_alloc_mr - register stag for fast memory registration
* @pd: ibpd pointer
* @mr_type: memory for stag registrion
* @max_num_sg: man number of pages
*/
static struct ib_mr *irdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
u32 max_num_sg)
{
struct irdma_device *iwdev = to_iwdev(pd->device);
struct irdma_pble_alloc *palloc;
struct irdma_pbl *iwpbl;
struct irdma_mr *iwmr;
u32 stag;
int err_code;
iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
if (!iwmr)
return ERR_PTR(-ENOMEM);
stag = irdma_create_stag(iwdev);
if (!stag) {
err_code = -ENOMEM;
goto err;
}
iwmr->stag = stag;
iwmr->ibmr.rkey = stag;
iwmr->ibmr.lkey = stag;
iwmr->ibmr.pd = pd;
iwmr->ibmr.device = pd->device;
iwpbl = &iwmr->iwpbl;
iwpbl->iwmr = iwmr;
iwmr->type = IRDMA_MEMREG_TYPE_MEM;
palloc = &iwpbl->pble_alloc;
iwmr->page_cnt = max_num_sg;
/* Use system PAGE_SIZE as the sg page sizes are unknown at this point */
iwmr->len = max_num_sg * PAGE_SIZE;
err_code = irdma_get_pble(iwdev->rf->pble_rsrc, palloc, iwmr->page_cnt,
false);
if (err_code)
goto err_get_pble;
err_code = irdma_hw_alloc_stag(iwdev, iwmr);
if (err_code)
goto err_alloc_stag;
iwpbl->pbl_allocated = true;
return &iwmr->ibmr;
err_alloc_stag:
irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
err_get_pble:
irdma_free_stag(iwdev, stag);
err:
kfree(iwmr);
return ERR_PTR(err_code);
}
/**
* irdma_set_page - populate pbl list for fmr
* @ibmr: ib mem to access iwarp mr pointer
* @addr: page dma address fro pbl list
*/
static int irdma_set_page(struct ib_mr *ibmr, u64 addr)
{
struct irdma_mr *iwmr = to_iwmr(ibmr);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
u64 *pbl;
if (unlikely(iwmr->npages == iwmr->page_cnt))
return -ENOMEM;
if (palloc->level == PBLE_LEVEL_2) {
struct irdma_pble_info *palloc_info =
palloc->level2.leaf + (iwmr->npages >> PBLE_512_SHIFT);
palloc_info->addr[iwmr->npages & (PBLE_PER_PAGE - 1)] = addr;
} else {
pbl = palloc->level1.addr;
pbl[iwmr->npages] = addr;
}
iwmr->npages++;
return 0;
}
/**
* irdma_map_mr_sg - map of sg list for fmr
* @ibmr: ib mem to access iwarp mr pointer
* @sg: scatter gather list
* @sg_nents: number of sg pages
* @sg_offset: scatter gather list for fmr
*/
static int irdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
int sg_nents, unsigned int *sg_offset)
{
struct irdma_mr *iwmr = to_iwmr(ibmr);
iwmr->npages = 0;
return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, irdma_set_page);
}
/**
* irdma_hwreg_mr - send cqp command for memory registration
* @iwdev: irdma device
* @iwmr: irdma mr pointer
* @access: access for MR
*/
static int irdma_hwreg_mr(struct irdma_device *iwdev, struct irdma_mr *iwmr,
u16 access)
{
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_reg_ns_stag_info *stag_info;
struct ib_pd *pd = iwmr->ibmr.pd;
struct irdma_pd *iwpd = to_iwpd(pd);
struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int ret;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
memset(stag_info, 0, sizeof(*stag_info));
stag_info->va = iwpbl->user_base;
stag_info->stag_idx = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S;
stag_info->stag_key = (u8)iwmr->stag;
stag_info->total_len = iwmr->len;
stag_info->access_rights = irdma_get_mr_access(access);
stag_info->pd_id = iwpd->sc_pd.pd_id;
stag_info->all_memory = pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY;
if (stag_info->access_rights & IRDMA_ACCESS_FLAGS_ZERO_BASED)
stag_info->addr_type = IRDMA_ADDR_TYPE_ZERO_BASED;
else
stag_info->addr_type = IRDMA_ADDR_TYPE_VA_BASED;
stag_info->page_size = iwmr->page_size;
if (iwpbl->pbl_allocated) {
if (palloc->level == PBLE_LEVEL_1) {
stag_info->first_pm_pbl_index = palloc->level1.idx;
stag_info->chunk_size = 1;
} else {
stag_info->first_pm_pbl_index = palloc->level2.root.idx;
stag_info->chunk_size = 3;
}
} else {
stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
}
cqp_info->cqp_cmd = IRDMA_OP_MR_REG_NON_SHARED;
cqp_info->post_sq = 1;
cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->rf->sc_dev;
cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
ret = irdma_handle_cqp_op(iwdev->rf, cqp_request);
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
if (!ret)
iwmr->is_hwreg = 1;
return ret;
}
static int irdma_reg_user_mr_type_mem(struct irdma_mr *iwmr, int access,
bool create_stag)
{
struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
u32 stag = 0;
u8 lvl;
int err;
lvl = iwmr->page_cnt != 1 ? PBLE_LEVEL_1 | PBLE_LEVEL_2 : PBLE_LEVEL_0;
err = irdma_setup_pbles(iwdev->rf, iwmr, lvl);
if (err)
return err;
if (lvl) {
err = irdma_check_mr_contiguous(&iwpbl->pble_alloc,
iwmr->page_size);
if (err) {
irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc);
iwpbl->pbl_allocated = false;
}
}
if (create_stag) {
stag = irdma_create_stag(iwdev);
if (!stag) {
err = -ENOMEM;
goto free_pble;
}
iwmr->stag = stag;
iwmr->ibmr.rkey = stag;
iwmr->ibmr.lkey = stag;
}
err = irdma_hwreg_mr(iwdev, iwmr, access);
if (err)
goto err_hwreg;
return 0;
err_hwreg:
if (stag)
irdma_free_stag(iwdev, stag);
free_pble:
if (iwpbl->pble_alloc.level != PBLE_LEVEL_0 && iwpbl->pbl_allocated)
irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc);
return err;
}
static struct irdma_mr *irdma_alloc_iwmr(struct ib_umem *region,
struct ib_pd *pd, u64 virt,
enum irdma_memreg_type reg_type)
{
struct irdma_device *iwdev = to_iwdev(pd->device);
struct irdma_pbl *iwpbl;
struct irdma_mr *iwmr;
unsigned long pgsz_bitmap;
iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
if (!iwmr)
return ERR_PTR(-ENOMEM);
iwpbl = &iwmr->iwpbl;
iwpbl->iwmr = iwmr;
iwmr->region = region;
iwmr->ibmr.pd = pd;
iwmr->ibmr.device = pd->device;
iwmr->ibmr.iova = virt;
iwmr->type = reg_type;
pgsz_bitmap = (reg_type == IRDMA_MEMREG_TYPE_MEM) ?
iwdev->rf->sc_dev.hw_attrs.page_size_cap : SZ_4K;
iwmr->page_size = ib_umem_find_best_pgsz(region, pgsz_bitmap, virt);
if (unlikely(!iwmr->page_size)) {
kfree(iwmr);
return ERR_PTR(-EOPNOTSUPP);
}
iwmr->len = region->length;
iwpbl->user_base = virt;
iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size);
return iwmr;
}
static void irdma_free_iwmr(struct irdma_mr *iwmr)
{
kfree(iwmr);
}
static int irdma_reg_user_mr_type_qp(struct irdma_mem_reg_req req,
struct ib_udata *udata,
struct irdma_mr *iwmr)
{
struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_ucontext *ucontext = NULL;
unsigned long flags;
u32 total;
int err;
u8 lvl;
/* iWarp: Catch page not starting on OS page boundary */
if (!rdma_protocol_roce(&iwdev->ibdev, 1) &&
ib_umem_offset(iwmr->region))
return -EINVAL;
total = req.sq_pages + req.rq_pages + 1;
if (total > iwmr->page_cnt)
return -EINVAL;
total = req.sq_pages + req.rq_pages;
lvl = total > 2 ? PBLE_LEVEL_1 : PBLE_LEVEL_0;
err = irdma_handle_q_mem(iwdev, &req, iwpbl, lvl);
if (err)
return err;
ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext,
ibucontext);
spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
iwpbl->on_list = true;
spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
return 0;
}
static int irdma_reg_user_mr_type_cq(struct irdma_mem_reg_req req,
struct ib_udata *udata,
struct irdma_mr *iwmr)
{
struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_ucontext *ucontext = NULL;
u8 shadow_pgcnt = 1;
unsigned long flags;
u32 total;
int err;
u8 lvl;
if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_CQ_RESIZE)
shadow_pgcnt = 0;
total = req.cq_pages + shadow_pgcnt;
if (total > iwmr->page_cnt)
return -EINVAL;
lvl = req.cq_pages > 1 ? PBLE_LEVEL_1 : PBLE_LEVEL_0;
err = irdma_handle_q_mem(iwdev, &req, iwpbl, lvl);
if (err)
return err;
ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext,
ibucontext);
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
iwpbl->on_list = true;
spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
return 0;
}
/**
* irdma_reg_user_mr - Register a user memory region
* @pd: ptr of pd
* @start: virtual start address
* @len: length of mr
* @virt: virtual address
* @access: access of mr
* @udata: user data
*/
static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
u64 virt, int access,
struct ib_udata *udata)
{
#define IRDMA_MEM_REG_MIN_REQ_LEN offsetofend(struct irdma_mem_reg_req, sq_pages)
struct irdma_device *iwdev = to_iwdev(pd->device);
struct irdma_mem_reg_req req = {};
struct ib_umem *region = NULL;
struct irdma_mr *iwmr = NULL;
int err;
if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size)
return ERR_PTR(-EINVAL);
if (udata->inlen < IRDMA_MEM_REG_MIN_REQ_LEN)
return ERR_PTR(-EINVAL);
region = ib_umem_get(pd->device, start, len, access);
if (IS_ERR(region)) {
ibdev_dbg(&iwdev->ibdev,
"VERBS: Failed to create ib_umem region\n");
return (struct ib_mr *)region;
}
if (ib_copy_from_udata(&req, udata, min(sizeof(req), udata->inlen))) {
ib_umem_release(region);
return ERR_PTR(-EFAULT);
}
iwmr = irdma_alloc_iwmr(region, pd, virt, req.reg_type);
if (IS_ERR(iwmr)) {
ib_umem_release(region);
return (struct ib_mr *)iwmr;
}
switch (req.reg_type) {
case IRDMA_MEMREG_TYPE_QP:
err = irdma_reg_user_mr_type_qp(req, udata, iwmr);
if (err)
goto error;
break;
case IRDMA_MEMREG_TYPE_CQ:
err = irdma_reg_user_mr_type_cq(req, udata, iwmr);
if (err)
goto error;
break;
case IRDMA_MEMREG_TYPE_MEM:
err = irdma_reg_user_mr_type_mem(iwmr, access, true);
if (err)
goto error;
break;
default:
err = -EINVAL;
goto error;
}
return &iwmr->ibmr;
error:
ib_umem_release(region);
irdma_free_iwmr(iwmr);
return ERR_PTR(err);
}
static struct ib_mr *irdma_reg_user_mr_dmabuf(struct ib_pd *pd, u64 start,
u64 len, u64 virt,
int fd, int access,
struct ib_udata *udata)
{
struct irdma_device *iwdev = to_iwdev(pd->device);
struct ib_umem_dmabuf *umem_dmabuf;
struct irdma_mr *iwmr;
int err;
if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size)
return ERR_PTR(-EINVAL);
umem_dmabuf = ib_umem_dmabuf_get_pinned(pd->device, start, len, fd, access);
if (IS_ERR(umem_dmabuf)) {
err = PTR_ERR(umem_dmabuf);
ibdev_dbg(&iwdev->ibdev, "Failed to get dmabuf umem[%d]\n", err);
return ERR_PTR(err);
}
iwmr = irdma_alloc_iwmr(&umem_dmabuf->umem, pd, virt, IRDMA_MEMREG_TYPE_MEM);
if (IS_ERR(iwmr)) {
err = PTR_ERR(iwmr);
goto err_release;
}
err = irdma_reg_user_mr_type_mem(iwmr, access, true);
if (err)
goto err_iwmr;
return &iwmr->ibmr;
err_iwmr:
irdma_free_iwmr(iwmr);
err_release:
ib_umem_release(&umem_dmabuf->umem);
return ERR_PTR(err);
}
static int irdma_hwdereg_mr(struct ib_mr *ib_mr)
{
struct irdma_device *iwdev = to_iwdev(ib_mr->device);
struct irdma_mr *iwmr = to_iwmr(ib_mr);
struct irdma_pd *iwpd = to_iwpd(ib_mr->pd);
struct irdma_dealloc_stag_info *info;
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
/* Skip HW MR de-register when it is already de-registered
* during an MR re-reregister and the re-registration fails
*/
if (!iwmr->is_hwreg)
return 0;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
info = &cqp_info->in.u.dealloc_stag.info;
memset(info, 0, sizeof(*info));
info->pd_id = iwpd->sc_pd.pd_id;
info->stag_idx = ib_mr->rkey >> IRDMA_CQPSQ_STAG_IDX_S;
info->mr = true;
if (iwpbl->pbl_allocated)
info->dealloc_pbl = true;
cqp_info->cqp_cmd = IRDMA_OP_DEALLOC_STAG;
cqp_info->post_sq = 1;
cqp_info->in.u.dealloc_stag.dev = &iwdev->rf->sc_dev;
cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
if (status)
return status;
iwmr->is_hwreg = 0;
return 0;
}
/*
* irdma_rereg_mr_trans - Re-register a user MR for a change translation.
* @iwmr: ptr of iwmr
* @start: virtual start address
* @len: length of mr
* @virt: virtual address
*
* Re-register a user memory region when a change translation is requested.
* Re-register a new region while reusing the stag from the original registration.
*/
static int irdma_rereg_mr_trans(struct irdma_mr *iwmr, u64 start, u64 len,
u64 virt)
{
struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
struct ib_pd *pd = iwmr->ibmr.pd;
struct ib_umem *region;
int err;
region = ib_umem_get(pd->device, start, len, iwmr->access);
if (IS_ERR(region))
return PTR_ERR(region);
iwmr->region = region;
iwmr->ibmr.iova = virt;
iwmr->ibmr.pd = pd;
iwmr->page_size = ib_umem_find_best_pgsz(region,
iwdev->rf->sc_dev.hw_attrs.page_size_cap,
virt);
if (unlikely(!iwmr->page_size)) {
err = -EOPNOTSUPP;
goto err;
}
iwmr->len = region->length;
iwpbl->user_base = virt;
iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size);
err = irdma_reg_user_mr_type_mem(iwmr, iwmr->access, false);
if (err)
goto err;
return 0;
err:
ib_umem_release(region);
return err;
}
/*
* irdma_rereg_user_mr - Re-Register a user memory region(MR)
* @ibmr: ib mem to access iwarp mr pointer
* @flags: bit mask to indicate which of the attr's of MR modified
* @start: virtual start address
* @len: length of mr
* @virt: virtual address
* @new_access: bit mask of access flags
* @new_pd: ptr of pd
* @udata: user data
*
* Return:
* NULL - Success, existing MR updated
* ERR_PTR - error occurred
*/
static struct ib_mr *irdma_rereg_user_mr(struct ib_mr *ib_mr, int flags,
u64 start, u64 len, u64 virt,
int new_access, struct ib_pd *new_pd,
struct ib_udata *udata)
{
struct irdma_device *iwdev = to_iwdev(ib_mr->device);
struct irdma_mr *iwmr = to_iwmr(ib_mr);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
int ret;
if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size)
return ERR_PTR(-EINVAL);
if (flags & ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS))
return ERR_PTR(-EOPNOTSUPP);
ret = irdma_hwdereg_mr(ib_mr);
if (ret)
return ERR_PTR(ret);
if (flags & IB_MR_REREG_ACCESS)
iwmr->access = new_access;
if (flags & IB_MR_REREG_PD) {
iwmr->ibmr.pd = new_pd;
iwmr->ibmr.device = new_pd->device;
}
if (flags & IB_MR_REREG_TRANS) {
if (iwpbl->pbl_allocated) {
irdma_free_pble(iwdev->rf->pble_rsrc,
&iwpbl->pble_alloc);
iwpbl->pbl_allocated = false;
}
if (iwmr->region) {
ib_umem_release(iwmr->region);
iwmr->region = NULL;
}
ret = irdma_rereg_mr_trans(iwmr, start, len, virt);
} else
ret = irdma_hwreg_mr(iwdev, iwmr, iwmr->access);
if (ret)
return ERR_PTR(ret);
return NULL;
}
/**
* irdma_reg_phys_mr - register kernel physical memory
* @pd: ibpd pointer
* @addr: physical address of memory to register
* @size: size of memory to register
* @access: Access rights
* @iova_start: start of virtual address for physical buffers
*/
struct ib_mr *irdma_reg_phys_mr(struct ib_pd *pd, u64 addr, u64 size, int access,
u64 *iova_start)
{
struct irdma_device *iwdev = to_iwdev(pd->device);
struct irdma_pbl *iwpbl;
struct irdma_mr *iwmr;
u32 stag;
int ret;
iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
if (!iwmr)
return ERR_PTR(-ENOMEM);
iwmr->ibmr.pd = pd;
iwmr->ibmr.device = pd->device;
iwpbl = &iwmr->iwpbl;
iwpbl->iwmr = iwmr;
iwmr->type = IRDMA_MEMREG_TYPE_MEM;
iwpbl->user_base = *iova_start;
stag = irdma_create_stag(iwdev);
if (!stag) {
ret = -ENOMEM;
goto err;
}
iwmr->stag = stag;
iwmr->ibmr.iova = *iova_start;
iwmr->ibmr.rkey = stag;
iwmr->ibmr.lkey = stag;
iwmr->page_cnt = 1;
iwmr->pgaddrmem[0] = addr;
iwmr->len = size;
iwmr->page_size = SZ_4K;
ret = irdma_hwreg_mr(iwdev, iwmr, access);
if (ret) {
irdma_free_stag(iwdev, stag);
goto err;
}
return &iwmr->ibmr;
err:
kfree(iwmr);
return ERR_PTR(ret);
}
/**
* irdma_get_dma_mr - register physical mem
* @pd: ptr of pd
* @acc: access for memory
*/
static struct ib_mr *irdma_get_dma_mr(struct ib_pd *pd, int acc)
{
u64 kva = 0;
return irdma_reg_phys_mr(pd, 0, 0, acc, &kva);
}
/**
* irdma_del_memlist - Deleting pbl list entries for CQ/QP
* @iwmr: iwmr for IB's user page addresses
* @ucontext: ptr to user context
*/
static void irdma_del_memlist(struct irdma_mr *iwmr,
struct irdma_ucontext *ucontext)
{
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
unsigned long flags;
switch (iwmr->type) {
case IRDMA_MEMREG_TYPE_CQ:
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
if (iwpbl->on_list) {
iwpbl->on_list = false;
list_del(&iwpbl->list);
}
spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
break;
case IRDMA_MEMREG_TYPE_QP:
spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
if (iwpbl->on_list) {
iwpbl->on_list = false;
list_del(&iwpbl->list);
}
spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
break;
default:
break;
}
}
/**
* irdma_dereg_mr - deregister mr
* @ib_mr: mr ptr for dereg
* @udata: user data
*/
static int irdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata)
{
struct irdma_mr *iwmr = to_iwmr(ib_mr);
struct irdma_device *iwdev = to_iwdev(ib_mr->device);
struct irdma_pbl *iwpbl = &iwmr->iwpbl;
int ret;
if (iwmr->type != IRDMA_MEMREG_TYPE_MEM) {
if (iwmr->region) {
struct irdma_ucontext *ucontext;
ucontext = rdma_udata_to_drv_context(udata,
struct irdma_ucontext,
ibucontext);
irdma_del_memlist(iwmr, ucontext);
}
goto done;
}
ret = irdma_hwdereg_mr(ib_mr);
if (ret)
return ret;
irdma_free_stag(iwdev, iwmr->stag);
done:
if (iwpbl->pbl_allocated)
irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc);
if (iwmr->region)
ib_umem_release(iwmr->region);
kfree(iwmr);
return 0;
}
/**
* irdma_post_send - kernel application wr
* @ibqp: qp ptr for wr
* @ib_wr: work request ptr
* @bad_wr: return of bad wr if err
*/
static int irdma_post_send(struct ib_qp *ibqp,
const struct ib_send_wr *ib_wr,
const struct ib_send_wr **bad_wr)
{
struct irdma_qp *iwqp;
struct irdma_qp_uk *ukqp;
struct irdma_sc_dev *dev;
struct irdma_post_sq_info info;
int err = 0;
unsigned long flags;
bool inv_stag;
struct irdma_ah *ah;
iwqp = to_iwqp(ibqp);
ukqp = &iwqp->sc_qp.qp_uk;
dev = &iwqp->iwdev->rf->sc_dev;
spin_lock_irqsave(&iwqp->lock, flags);
while (ib_wr) {
memset(&info, 0, sizeof(info));
inv_stag = false;
info.wr_id = (ib_wr->wr_id);
if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
info.signaled = true;
if (ib_wr->send_flags & IB_SEND_FENCE)
info.read_fence = true;
switch (ib_wr->opcode) {
case IB_WR_SEND_WITH_IMM:
if (ukqp->qp_caps & IRDMA_SEND_WITH_IMM) {
info.imm_data_valid = true;
info.imm_data = ntohl(ib_wr->ex.imm_data);
} else {
err = -EINVAL;
break;
}
fallthrough;
case IB_WR_SEND:
case IB_WR_SEND_WITH_INV:
if (ib_wr->opcode == IB_WR_SEND ||
ib_wr->opcode == IB_WR_SEND_WITH_IMM) {
if (ib_wr->send_flags & IB_SEND_SOLICITED)
info.op_type = IRDMA_OP_TYPE_SEND_SOL;
else
info.op_type = IRDMA_OP_TYPE_SEND;
} else {
if (ib_wr->send_flags & IB_SEND_SOLICITED)
info.op_type = IRDMA_OP_TYPE_SEND_SOL_INV;
else
info.op_type = IRDMA_OP_TYPE_SEND_INV;
info.stag_to_inv = ib_wr->ex.invalidate_rkey;
}
info.op.send.num_sges = ib_wr->num_sge;
info.op.send.sg_list = ib_wr->sg_list;
if (iwqp->ibqp.qp_type == IB_QPT_UD ||
iwqp->ibqp.qp_type == IB_QPT_GSI) {
ah = to_iwah(ud_wr(ib_wr)->ah);
info.op.send.ah_id = ah->sc_ah.ah_info.ah_idx;
info.op.send.qkey = ud_wr(ib_wr)->remote_qkey;
info.op.send.dest_qp = ud_wr(ib_wr)->remote_qpn;
}
if (ib_wr->send_flags & IB_SEND_INLINE)
err = irdma_uk_inline_send(ukqp, &info, false);
else
err = irdma_uk_send(ukqp, &info, false);
break;
case IB_WR_RDMA_WRITE_WITH_IMM:
if (ukqp->qp_caps & IRDMA_WRITE_WITH_IMM) {
info.imm_data_valid = true;
info.imm_data = ntohl(ib_wr->ex.imm_data);
} else {
err = -EINVAL;
break;
}
fallthrough;
case IB_WR_RDMA_WRITE:
if (ib_wr->send_flags & IB_SEND_SOLICITED)
info.op_type = IRDMA_OP_TYPE_RDMA_WRITE_SOL;
else
info.op_type = IRDMA_OP_TYPE_RDMA_WRITE;
info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
info.op.rdma_write.lo_sg_list = ib_wr->sg_list;
info.op.rdma_write.rem_addr.addr =
rdma_wr(ib_wr)->remote_addr;
info.op.rdma_write.rem_addr.lkey = rdma_wr(ib_wr)->rkey;
if (ib_wr->send_flags & IB_SEND_INLINE)
err = irdma_uk_inline_rdma_write(ukqp, &info, false);
else
err = irdma_uk_rdma_write(ukqp, &info, false);
break;
case IB_WR_RDMA_READ_WITH_INV:
inv_stag = true;
fallthrough;
case IB_WR_RDMA_READ:
if (ib_wr->num_sge >
dev->hw_attrs.uk_attrs.max_hw_read_sges) {
err = -EINVAL;
break;
}
info.op_type = IRDMA_OP_TYPE_RDMA_READ;
info.op.rdma_read.rem_addr.addr = rdma_wr(ib_wr)->remote_addr;
info.op.rdma_read.rem_addr.lkey = rdma_wr(ib_wr)->rkey;
info.op.rdma_read.lo_sg_list = (void *)ib_wr->sg_list;
info.op.rdma_read.num_lo_sges = ib_wr->num_sge;
err = irdma_uk_rdma_read(ukqp, &info, inv_stag, false);
break;
case IB_WR_LOCAL_INV:
info.op_type = IRDMA_OP_TYPE_INV_STAG;
info.local_fence = info.read_fence;
info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey;
err = irdma_uk_stag_local_invalidate(ukqp, &info, true);
break;
case IB_WR_REG_MR: {
struct irdma_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr);
struct irdma_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc;
struct irdma_fast_reg_stag_info stag_info = {};
stag_info.signaled = info.signaled;
stag_info.read_fence = info.read_fence;
stag_info.access_rights = irdma_get_mr_access(reg_wr(ib_wr)->access);
stag_info.stag_key = reg_wr(ib_wr)->key & 0xff;
stag_info.stag_idx = reg_wr(ib_wr)->key >> 8;
stag_info.page_size = reg_wr(ib_wr)->mr->page_size;
stag_info.wr_id = ib_wr->wr_id;
stag_info.addr_type = IRDMA_ADDR_TYPE_VA_BASED;
stag_info.va = (void *)(uintptr_t)iwmr->ibmr.iova;
stag_info.total_len = iwmr->ibmr.length;
stag_info.reg_addr_pa = *palloc->level1.addr;
stag_info.first_pm_pbl_index = palloc->level1.idx;
stag_info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;
if (iwmr->npages > IRDMA_MIN_PAGES_PER_FMR)
stag_info.chunk_size = 1;
err = irdma_sc_mr_fast_register(&iwqp->sc_qp, &stag_info,
true);
break;
}
default:
err = -EINVAL;
ibdev_dbg(&iwqp->iwdev->ibdev,
"VERBS: upost_send bad opcode = 0x%x\n",
ib_wr->opcode);
break;
}
if (err)
break;
ib_wr = ib_wr->next;
}
if (!iwqp->flush_issued) {
if (iwqp->hw_iwarp_state <= IRDMA_QP_STATE_RTS)
irdma_uk_qp_post_wr(ukqp);
spin_unlock_irqrestore(&iwqp->lock, flags);
} else {
spin_unlock_irqrestore(&iwqp->lock, flags);
mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
}
if (err)
*bad_wr = ib_wr;
return err;
}
/**
* irdma_post_recv - post receive wr for kernel application
* @ibqp: ib qp pointer
* @ib_wr: work request for receive
* @bad_wr: bad wr caused an error
*/
static int irdma_post_recv(struct ib_qp *ibqp,
const struct ib_recv_wr *ib_wr,
const struct ib_recv_wr **bad_wr)
{
struct irdma_qp *iwqp;
struct irdma_qp_uk *ukqp;
struct irdma_post_rq_info post_recv = {};
unsigned long flags;
int err = 0;
iwqp = to_iwqp(ibqp);
ukqp = &iwqp->sc_qp.qp_uk;
spin_lock_irqsave(&iwqp->lock, flags);
while (ib_wr) {
post_recv.num_sges = ib_wr->num_sge;
post_recv.wr_id = ib_wr->wr_id;
post_recv.sg_list = ib_wr->sg_list;
err = irdma_uk_post_receive(ukqp, &post_recv);
if (err) {
ibdev_dbg(&iwqp->iwdev->ibdev,
"VERBS: post_recv err %d\n", err);
goto out;
}
ib_wr = ib_wr->next;
}
out:
spin_unlock_irqrestore(&iwqp->lock, flags);
if (iwqp->flush_issued)
mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
if (err)
*bad_wr = ib_wr;
return err;
}
/**
* irdma_flush_err_to_ib_wc_status - return change flush error code to IB status
* @opcode: iwarp flush code
*/
static enum ib_wc_status irdma_flush_err_to_ib_wc_status(enum irdma_flush_opcode opcode)
{
switch (opcode) {
case FLUSH_PROT_ERR:
return IB_WC_LOC_PROT_ERR;
case FLUSH_REM_ACCESS_ERR:
return IB_WC_REM_ACCESS_ERR;
case FLUSH_LOC_QP_OP_ERR:
return IB_WC_LOC_QP_OP_ERR;
case FLUSH_REM_OP_ERR:
return IB_WC_REM_OP_ERR;
case FLUSH_LOC_LEN_ERR:
return IB_WC_LOC_LEN_ERR;
case FLUSH_GENERAL_ERR:
return IB_WC_WR_FLUSH_ERR;
case FLUSH_RETRY_EXC_ERR:
return IB_WC_RETRY_EXC_ERR;
case FLUSH_MW_BIND_ERR:
return IB_WC_MW_BIND_ERR;
case FLUSH_REM_INV_REQ_ERR:
return IB_WC_REM_INV_REQ_ERR;
case FLUSH_FATAL_ERR:
default:
return IB_WC_FATAL_ERR;
}
}
/**
* irdma_process_cqe - process cqe info
* @entry: processed cqe
* @cq_poll_info: cqe info
*/
static void irdma_process_cqe(struct ib_wc *entry,
struct irdma_cq_poll_info *cq_poll_info)
{
struct irdma_sc_qp *qp;
entry->wc_flags = 0;
entry->pkey_index = 0;
entry->wr_id = cq_poll_info->wr_id;
qp = cq_poll_info->qp_handle;
entry->qp = qp->qp_uk.back_qp;
if (cq_poll_info->error) {
entry->status = (cq_poll_info->comp_status == IRDMA_COMPL_STATUS_FLUSHED) ?
irdma_flush_err_to_ib_wc_status(cq_poll_info->minor_err) : IB_WC_GENERAL_ERR;
entry->vendor_err = cq_poll_info->major_err << 16 |
cq_poll_info->minor_err;
} else {
entry->status = IB_WC_SUCCESS;
if (cq_poll_info->imm_valid) {
entry->ex.imm_data = htonl(cq_poll_info->imm_data);
entry->wc_flags |= IB_WC_WITH_IMM;
}
if (cq_poll_info->ud_smac_valid) {
ether_addr_copy(entry->smac, cq_poll_info->ud_smac);
entry->wc_flags |= IB_WC_WITH_SMAC;
}
if (cq_poll_info->ud_vlan_valid) {
u16 vlan = cq_poll_info->ud_vlan & VLAN_VID_MASK;
entry->sl = cq_poll_info->ud_vlan >> VLAN_PRIO_SHIFT;
if (vlan) {
entry->vlan_id = vlan;
entry->wc_flags |= IB_WC_WITH_VLAN;
}
} else {
entry->sl = 0;
}
}
if (cq_poll_info->q_type == IRDMA_CQE_QTYPE_SQ) {
set_ib_wc_op_sq(cq_poll_info, entry);
} else {
set_ib_wc_op_rq(cq_poll_info, entry,
qp->qp_uk.qp_caps & IRDMA_SEND_WITH_IMM);
if (qp->qp_uk.qp_type != IRDMA_QP_TYPE_ROCE_UD &&
cq_poll_info->stag_invalid_set) {
entry->ex.invalidate_rkey = cq_poll_info->inv_stag;
entry->wc_flags |= IB_WC_WITH_INVALIDATE;
}
}
if (qp->qp_uk.qp_type == IRDMA_QP_TYPE_ROCE_UD) {
entry->src_qp = cq_poll_info->ud_src_qpn;
entry->slid = 0;
entry->wc_flags |=
(IB_WC_GRH | IB_WC_WITH_NETWORK_HDR_TYPE);
entry->network_hdr_type = cq_poll_info->ipv4 ?
RDMA_NETWORK_IPV4 :
RDMA_NETWORK_IPV6;
} else {
entry->src_qp = cq_poll_info->qp_id;
}
entry->byte_len = cq_poll_info->bytes_xfered;
}
/**
* irdma_poll_one - poll one entry of the CQ
* @ukcq: ukcq to poll
* @cur_cqe: current CQE info to be filled in
* @entry: ibv_wc object to be filled for non-extended CQ or NULL for extended CQ
*
* Returns the internal irdma device error code or 0 on success
*/
static inline int irdma_poll_one(struct irdma_cq_uk *ukcq,
struct irdma_cq_poll_info *cur_cqe,
struct ib_wc *entry)
{
int ret = irdma_uk_cq_poll_cmpl(ukcq, cur_cqe);
if (ret)
return ret;
irdma_process_cqe(entry, cur_cqe);
return 0;
}
/**
* __irdma_poll_cq - poll cq for completion (kernel apps)
* @iwcq: cq to poll
* @num_entries: number of entries to poll
* @entry: wr of a completed entry
*/
static int __irdma_poll_cq(struct irdma_cq *iwcq, int num_entries, struct ib_wc *entry)
{
struct list_head *tmp_node, *list_node;
struct irdma_cq_buf *last_buf = NULL;
struct irdma_cq_poll_info *cur_cqe = &iwcq->cur_cqe;
struct irdma_cq_buf *cq_buf;
int ret;
struct irdma_device *iwdev;
struct irdma_cq_uk *ukcq;
bool cq_new_cqe = false;
int resized_bufs = 0;
int npolled = 0;
iwdev = to_iwdev(iwcq->ibcq.device);
ukcq = &iwcq->sc_cq.cq_uk;
/* go through the list of previously resized CQ buffers */
list_for_each_safe(list_node, tmp_node, &iwcq->resize_list) {
cq_buf = container_of(list_node, struct irdma_cq_buf, list);
while (npolled < num_entries) {
ret = irdma_poll_one(&cq_buf->cq_uk, cur_cqe, entry + npolled);
if (!ret) {
++npolled;
cq_new_cqe = true;
continue;
}
if (ret == -ENOENT)
break;
/* QP using the CQ is destroyed. Skip reporting this CQE */
if (ret == -EFAULT) {
cq_new_cqe = true;
continue;
}
goto error;
}
/* save the resized CQ buffer which received the last cqe */
if (cq_new_cqe)
last_buf = cq_buf;
cq_new_cqe = false;
}
/* check the current CQ for new cqes */
while (npolled < num_entries) {
ret = irdma_poll_one(ukcq, cur_cqe, entry + npolled);
if (ret == -ENOENT) {
ret = irdma_generated_cmpls(iwcq, cur_cqe);
if (!ret)
irdma_process_cqe(entry + npolled, cur_cqe);
}
if (!ret) {
++npolled;
cq_new_cqe = true;
continue;
}
if (ret == -ENOENT)
break;
/* QP using the CQ is destroyed. Skip reporting this CQE */
if (ret == -EFAULT) {
cq_new_cqe = true;
continue;
}
goto error;
}
if (cq_new_cqe)
/* all previous CQ resizes are complete */
resized_bufs = irdma_process_resize_list(iwcq, iwdev, NULL);
else if (last_buf)
/* only CQ resizes up to the last_buf are complete */
resized_bufs = irdma_process_resize_list(iwcq, iwdev, last_buf);
if (resized_bufs)
/* report to the HW the number of complete CQ resizes */
irdma_uk_cq_set_resized_cnt(ukcq, resized_bufs);
return npolled;
error:
ibdev_dbg(&iwdev->ibdev, "%s: Error polling CQ, irdma_err: %d\n",
__func__, ret);
return ret;
}
/**
* irdma_poll_cq - poll cq for completion (kernel apps)
* @ibcq: cq to poll
* @num_entries: number of entries to poll
* @entry: wr of a completed entry
*/
static int irdma_poll_cq(struct ib_cq *ibcq, int num_entries,
struct ib_wc *entry)
{
struct irdma_cq *iwcq;
unsigned long flags;
int ret;
iwcq = to_iwcq(ibcq);
spin_lock_irqsave(&iwcq->lock, flags);
ret = __irdma_poll_cq(iwcq, num_entries, entry);
spin_unlock_irqrestore(&iwcq->lock, flags);
return ret;
}
/**
* irdma_req_notify_cq - arm cq kernel application
* @ibcq: cq to arm
* @notify_flags: notofication flags
*/
static int irdma_req_notify_cq(struct ib_cq *ibcq,
enum ib_cq_notify_flags notify_flags)
{
struct irdma_cq *iwcq;
struct irdma_cq_uk *ukcq;
unsigned long flags;
enum irdma_cmpl_notify cq_notify;
bool promo_event = false;
int ret = 0;
cq_notify = notify_flags == IB_CQ_SOLICITED ?
IRDMA_CQ_COMPL_SOLICITED : IRDMA_CQ_COMPL_EVENT;
iwcq = to_iwcq(ibcq);
ukcq = &iwcq->sc_cq.cq_uk;
spin_lock_irqsave(&iwcq->lock, flags);
/* Only promote to arm the CQ for any event if the last arm event was solicited. */
if (iwcq->last_notify == IRDMA_CQ_COMPL_SOLICITED && notify_flags != IB_CQ_SOLICITED)
promo_event = true;
if (!atomic_cmpxchg(&iwcq->armed, 0, 1) || promo_event) {
iwcq->last_notify = cq_notify;
irdma_uk_cq_request_notification(ukcq, cq_notify);
}
if ((notify_flags & IB_CQ_REPORT_MISSED_EVENTS) &&
(!irdma_cq_empty(iwcq) || !list_empty(&iwcq->cmpl_generated)))
ret = 1;
spin_unlock_irqrestore(&iwcq->lock, flags);
return ret;
}
static int irdma_roce_port_immutable(struct ib_device *ibdev, u32 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
int err;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
err = ib_query_port(ibdev, port_num, &attr);
if (err)
return err;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
return 0;
}
static int irdma_iw_port_immutable(struct ib_device *ibdev, u32 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
int err;
immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
err = ib_query_port(ibdev, port_num, &attr);
if (err)
return err;
immutable->gid_tbl_len = attr.gid_tbl_len;
return 0;
}
static const struct rdma_stat_desc irdma_hw_stat_names[] = {
/* gen1 - 32-bit */
[IRDMA_HW_STAT_INDEX_IP4RXDISCARD].name = "ip4InDiscards",
[IRDMA_HW_STAT_INDEX_IP4RXTRUNC].name = "ip4InTruncatedPkts",
[IRDMA_HW_STAT_INDEX_IP4TXNOROUTE].name = "ip4OutNoRoutes",
[IRDMA_HW_STAT_INDEX_IP6RXDISCARD].name = "ip6InDiscards",
[IRDMA_HW_STAT_INDEX_IP6RXTRUNC].name = "ip6InTruncatedPkts",
[IRDMA_HW_STAT_INDEX_IP6TXNOROUTE].name = "ip6OutNoRoutes",
[IRDMA_HW_STAT_INDEX_TCPRTXSEG].name = "tcpRetransSegs",
[IRDMA_HW_STAT_INDEX_TCPRXOPTERR].name = "tcpInOptErrors",
[IRDMA_HW_STAT_INDEX_TCPRXPROTOERR].name = "tcpInProtoErrors",
[IRDMA_HW_STAT_INDEX_RXVLANERR].name = "rxVlanErrors",
/* gen1 - 64-bit */
[IRDMA_HW_STAT_INDEX_IP4RXOCTS].name = "ip4InOctets",
[IRDMA_HW_STAT_INDEX_IP4RXPKTS].name = "ip4InPkts",
[IRDMA_HW_STAT_INDEX_IP4RXFRAGS].name = "ip4InReasmRqd",
[IRDMA_HW_STAT_INDEX_IP4RXMCPKTS].name = "ip4InMcastPkts",
[IRDMA_HW_STAT_INDEX_IP4TXOCTS].name = "ip4OutOctets",
[IRDMA_HW_STAT_INDEX_IP4TXPKTS].name = "ip4OutPkts",
[IRDMA_HW_STAT_INDEX_IP4TXFRAGS].name = "ip4OutSegRqd",
[IRDMA_HW_STAT_INDEX_IP4TXMCPKTS].name = "ip4OutMcastPkts",
[IRDMA_HW_STAT_INDEX_IP6RXOCTS].name = "ip6InOctets",
[IRDMA_HW_STAT_INDEX_IP6RXPKTS].name = "ip6InPkts",
[IRDMA_HW_STAT_INDEX_IP6RXFRAGS].name = "ip6InReasmRqd",
[IRDMA_HW_STAT_INDEX_IP6RXMCPKTS].name = "ip6InMcastPkts",
[IRDMA_HW_STAT_INDEX_IP6TXOCTS].name = "ip6OutOctets",
[IRDMA_HW_STAT_INDEX_IP6TXPKTS].name = "ip6OutPkts",
[IRDMA_HW_STAT_INDEX_IP6TXFRAGS].name = "ip6OutSegRqd",
[IRDMA_HW_STAT_INDEX_IP6TXMCPKTS].name = "ip6OutMcastPkts",
[IRDMA_HW_STAT_INDEX_TCPRXSEGS].name = "tcpInSegs",
[IRDMA_HW_STAT_INDEX_TCPTXSEG].name = "tcpOutSegs",
[IRDMA_HW_STAT_INDEX_RDMARXRDS].name = "iwInRdmaReads",
[IRDMA_HW_STAT_INDEX_RDMARXSNDS].name = "iwInRdmaSends",
[IRDMA_HW_STAT_INDEX_RDMARXWRS].name = "iwInRdmaWrites",
[IRDMA_HW_STAT_INDEX_RDMATXRDS].name = "iwOutRdmaReads",
[IRDMA_HW_STAT_INDEX_RDMATXSNDS].name = "iwOutRdmaSends",
[IRDMA_HW_STAT_INDEX_RDMATXWRS].name = "iwOutRdmaWrites",
[IRDMA_HW_STAT_INDEX_RDMAVBND].name = "iwRdmaBnd",
[IRDMA_HW_STAT_INDEX_RDMAVINV].name = "iwRdmaInv",
/* gen2 - 32-bit */
[IRDMA_HW_STAT_INDEX_RXRPCNPHANDLED].name = "cnpHandled",
[IRDMA_HW_STAT_INDEX_RXRPCNPIGNORED].name = "cnpIgnored",
[IRDMA_HW_STAT_INDEX_TXNPCNPSENT].name = "cnpSent",
/* gen2 - 64-bit */
[IRDMA_HW_STAT_INDEX_IP4RXMCOCTS].name = "ip4InMcastOctets",
[IRDMA_HW_STAT_INDEX_IP4TXMCOCTS].name = "ip4OutMcastOctets",
[IRDMA_HW_STAT_INDEX_IP6RXMCOCTS].name = "ip6InMcastOctets",
[IRDMA_HW_STAT_INDEX_IP6TXMCOCTS].name = "ip6OutMcastOctets",
[IRDMA_HW_STAT_INDEX_UDPRXPKTS].name = "RxUDP",
[IRDMA_HW_STAT_INDEX_UDPTXPKTS].name = "TxUDP",
[IRDMA_HW_STAT_INDEX_RXNPECNMARKEDPKTS].name = "RxECNMrkd",
};
static void irdma_get_dev_fw_str(struct ib_device *dev, char *str)
{
struct irdma_device *iwdev = to_iwdev(dev);
snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u",
irdma_fw_major_ver(&iwdev->rf->sc_dev),
irdma_fw_minor_ver(&iwdev->rf->sc_dev));
}
/**
* irdma_alloc_hw_port_stats - Allocate a hw stats structure
* @ibdev: device pointer from stack
* @port_num: port number
*/
static struct rdma_hw_stats *irdma_alloc_hw_port_stats(struct ib_device *ibdev,
u32 port_num)
{
struct irdma_device *iwdev = to_iwdev(ibdev);
struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
int num_counters = dev->hw_attrs.max_stat_idx;
unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN;
return rdma_alloc_hw_stats_struct(irdma_hw_stat_names, num_counters,
lifespan);
}
/**
* irdma_get_hw_stats - Populates the rdma_hw_stats structure
* @ibdev: device pointer from stack
* @stats: stats pointer from stack
* @port_num: port number
* @index: which hw counter the stack is requesting we update
*/
static int irdma_get_hw_stats(struct ib_device *ibdev,
struct rdma_hw_stats *stats, u32 port_num,
int index)
{
struct irdma_device *iwdev = to_iwdev(ibdev);
struct irdma_dev_hw_stats *hw_stats = &iwdev->vsi.pestat->hw_stats;
if (iwdev->rf->rdma_ver >= IRDMA_GEN_2)
irdma_cqp_gather_stats_cmd(&iwdev->rf->sc_dev, iwdev->vsi.pestat, true);
else
irdma_cqp_gather_stats_gen1(&iwdev->rf->sc_dev, iwdev->vsi.pestat);
memcpy(&stats->value[0], hw_stats, sizeof(u64) * stats->num_counters);
return stats->num_counters;
}
/**
* irdma_query_gid - Query port GID
* @ibdev: device pointer from stack
* @port: port number
* @index: Entry index
* @gid: Global ID
*/
static int irdma_query_gid(struct ib_device *ibdev, u32 port, int index,
union ib_gid *gid)
{
struct irdma_device *iwdev = to_iwdev(ibdev);
memset(gid->raw, 0, sizeof(gid->raw));
ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
return 0;
}
/**
* mcast_list_add - Add a new mcast item to list
* @rf: RDMA PCI function
* @new_elem: pointer to element to add
*/
static void mcast_list_add(struct irdma_pci_f *rf,
struct mc_table_list *new_elem)
{
list_add(&new_elem->list, &rf->mc_qht_list.list);
}
/**
* mcast_list_del - Remove an mcast item from list
* @mc_qht_elem: pointer to mcast table list element
*/
static void mcast_list_del(struct mc_table_list *mc_qht_elem)
{
if (mc_qht_elem)
list_del(&mc_qht_elem->list);
}
/**
* mcast_list_lookup_ip - Search mcast list for address
* @rf: RDMA PCI function
* @ip_mcast: pointer to mcast IP address
*/
static struct mc_table_list *mcast_list_lookup_ip(struct irdma_pci_f *rf,
u32 *ip_mcast)
{
struct mc_table_list *mc_qht_el;
struct list_head *pos, *q;
list_for_each_safe (pos, q, &rf->mc_qht_list.list) {
mc_qht_el = list_entry(pos, struct mc_table_list, list);
if (!memcmp(mc_qht_el->mc_info.dest_ip, ip_mcast,
sizeof(mc_qht_el->mc_info.dest_ip)))
return mc_qht_el;
}
return NULL;
}
/**
* irdma_mcast_cqp_op - perform a mcast cqp operation
* @iwdev: irdma device
* @mc_grp_ctx: mcast group info
* @op: operation
*
* returns error status
*/
static int irdma_mcast_cqp_op(struct irdma_device *iwdev,
struct irdma_mcast_grp_info *mc_grp_ctx, u8 op)
{
struct cqp_cmds_info *cqp_info;
struct irdma_cqp_request *cqp_request;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_request->info.in.u.mc_create.info = *mc_grp_ctx;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = op;
cqp_info->post_sq = 1;
cqp_info->in.u.mc_create.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.mc_create.cqp = &iwdev->rf->cqp.sc_cqp;
status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
return status;
}
/**
* irdma_mcast_mac - Get the multicast MAC for an IP address
* @ip_addr: IPv4 or IPv6 address
* @mac: pointer to result MAC address
* @ipv4: flag indicating IPv4 or IPv6
*
*/
void irdma_mcast_mac(u32 *ip_addr, u8 *mac, bool ipv4)
{
u8 *ip = (u8 *)ip_addr;
if (ipv4) {
unsigned char mac4[ETH_ALEN] = {0x01, 0x00, 0x5E, 0x00,
0x00, 0x00};
mac4[3] = ip[2] & 0x7F;
mac4[4] = ip[1];
mac4[5] = ip[0];
ether_addr_copy(mac, mac4);
} else {
unsigned char mac6[ETH_ALEN] = {0x33, 0x33, 0x00, 0x00,
0x00, 0x00};
mac6[2] = ip[3];
mac6[3] = ip[2];
mac6[4] = ip[1];
mac6[5] = ip[0];
ether_addr_copy(mac, mac6);
}
}
/**
* irdma_attach_mcast - attach a qp to a multicast group
* @ibqp: ptr to qp
* @ibgid: pointer to global ID
* @lid: local ID
*
* returns error status
*/
static int irdma_attach_mcast(struct ib_qp *ibqp, union ib_gid *ibgid, u16 lid)
{
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_pci_f *rf = iwdev->rf;
struct mc_table_list *mc_qht_elem;
struct irdma_mcast_grp_ctx_entry_info mcg_info = {};
unsigned long flags;
u32 ip_addr[4] = {};
u32 mgn;
u32 no_mgs;
int ret = 0;
bool ipv4;
u16 vlan_id;
union irdma_sockaddr sgid_addr;
unsigned char dmac[ETH_ALEN];
rdma_gid2ip((struct sockaddr *)&sgid_addr, ibgid);
if (!ipv6_addr_v4mapped((struct in6_addr *)ibgid)) {
irdma_copy_ip_ntohl(ip_addr,
sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
irdma_get_vlan_mac_ipv6(ip_addr, &vlan_id, NULL);
ipv4 = false;
ibdev_dbg(&iwdev->ibdev,
"VERBS: qp_id=%d, IP6address=%pI6\n", ibqp->qp_num,
ip_addr);
irdma_mcast_mac(ip_addr, dmac, false);
} else {
ip_addr[0] = ntohl(sgid_addr.saddr_in.sin_addr.s_addr);
ipv4 = true;
vlan_id = irdma_get_vlan_ipv4(ip_addr);
irdma_mcast_mac(ip_addr, dmac, true);
ibdev_dbg(&iwdev->ibdev,
"VERBS: qp_id=%d, IP4address=%pI4, MAC=%pM\n",
ibqp->qp_num, ip_addr, dmac);
}
spin_lock_irqsave(&rf->qh_list_lock, flags);
mc_qht_elem = mcast_list_lookup_ip(rf, ip_addr);
if (!mc_qht_elem) {
struct irdma_dma_mem *dma_mem_mc;
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
mc_qht_elem = kzalloc(sizeof(*mc_qht_elem), GFP_KERNEL);
if (!mc_qht_elem)
return -ENOMEM;
mc_qht_elem->mc_info.ipv4_valid = ipv4;
memcpy(mc_qht_elem->mc_info.dest_ip, ip_addr,
sizeof(mc_qht_elem->mc_info.dest_ip));
ret = irdma_alloc_rsrc(rf, rf->allocated_mcgs, rf->max_mcg,
&mgn, &rf->next_mcg);
if (ret) {
kfree(mc_qht_elem);
return -ENOMEM;
}
mc_qht_elem->mc_info.mgn = mgn;
dma_mem_mc = &mc_qht_elem->mc_grp_ctx.dma_mem_mc;
dma_mem_mc->size = ALIGN(sizeof(u64) * IRDMA_MAX_MGS_PER_CTX,
IRDMA_HW_PAGE_SIZE);
dma_mem_mc->va = dma_alloc_coherent(rf->hw.device,
dma_mem_mc->size,
&dma_mem_mc->pa,
GFP_KERNEL);
if (!dma_mem_mc->va) {
irdma_free_rsrc(rf, rf->allocated_mcgs, mgn);
kfree(mc_qht_elem);
return -ENOMEM;
}
mc_qht_elem->mc_grp_ctx.mg_id = (u16)mgn;
memcpy(mc_qht_elem->mc_grp_ctx.dest_ip_addr, ip_addr,
sizeof(mc_qht_elem->mc_grp_ctx.dest_ip_addr));
mc_qht_elem->mc_grp_ctx.ipv4_valid = ipv4;
mc_qht_elem->mc_grp_ctx.vlan_id = vlan_id;
if (vlan_id < VLAN_N_VID)
mc_qht_elem->mc_grp_ctx.vlan_valid = true;
mc_qht_elem->mc_grp_ctx.hmc_fcn_id = iwdev->rf->sc_dev.hmc_fn_id;
mc_qht_elem->mc_grp_ctx.qs_handle =
iwqp->sc_qp.vsi->qos[iwqp->sc_qp.user_pri].qs_handle;
ether_addr_copy(mc_qht_elem->mc_grp_ctx.dest_mac_addr, dmac);
spin_lock_irqsave(&rf->qh_list_lock, flags);
mcast_list_add(rf, mc_qht_elem);
} else {
if (mc_qht_elem->mc_grp_ctx.no_of_mgs ==
IRDMA_MAX_MGS_PER_CTX) {
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
return -ENOMEM;
}
}
mcg_info.qp_id = iwqp->ibqp.qp_num;
no_mgs = mc_qht_elem->mc_grp_ctx.no_of_mgs;
irdma_sc_add_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info);
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
/* Only if there is a change do we need to modify or create */
if (!no_mgs) {
ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
IRDMA_OP_MC_CREATE);
} else if (no_mgs != mc_qht_elem->mc_grp_ctx.no_of_mgs) {
ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
IRDMA_OP_MC_MODIFY);
} else {
return 0;
}
if (ret)
goto error;
return 0;
error:
irdma_sc_del_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info);
if (!mc_qht_elem->mc_grp_ctx.no_of_mgs) {
mcast_list_del(mc_qht_elem);
dma_free_coherent(rf->hw.device,
mc_qht_elem->mc_grp_ctx.dma_mem_mc.size,
mc_qht_elem->mc_grp_ctx.dma_mem_mc.va,
mc_qht_elem->mc_grp_ctx.dma_mem_mc.pa);
mc_qht_elem->mc_grp_ctx.dma_mem_mc.va = NULL;
irdma_free_rsrc(rf, rf->allocated_mcgs,
mc_qht_elem->mc_grp_ctx.mg_id);
kfree(mc_qht_elem);
}
return ret;
}
/**
* irdma_detach_mcast - detach a qp from a multicast group
* @ibqp: ptr to qp
* @ibgid: pointer to global ID
* @lid: local ID
*
* returns error status
*/
static int irdma_detach_mcast(struct ib_qp *ibqp, union ib_gid *ibgid, u16 lid)
{
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_pci_f *rf = iwdev->rf;
u32 ip_addr[4] = {};
struct mc_table_list *mc_qht_elem;
struct irdma_mcast_grp_ctx_entry_info mcg_info = {};
int ret;
unsigned long flags;
union irdma_sockaddr sgid_addr;
rdma_gid2ip((struct sockaddr *)&sgid_addr, ibgid);
if (!ipv6_addr_v4mapped((struct in6_addr *)ibgid))
irdma_copy_ip_ntohl(ip_addr,
sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
else
ip_addr[0] = ntohl(sgid_addr.saddr_in.sin_addr.s_addr);
spin_lock_irqsave(&rf->qh_list_lock, flags);
mc_qht_elem = mcast_list_lookup_ip(rf, ip_addr);
if (!mc_qht_elem) {
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
ibdev_dbg(&iwdev->ibdev,
"VERBS: address not found MCG\n");
return 0;
}
mcg_info.qp_id = iwqp->ibqp.qp_num;
irdma_sc_del_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info);
if (!mc_qht_elem->mc_grp_ctx.no_of_mgs) {
mcast_list_del(mc_qht_elem);
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
IRDMA_OP_MC_DESTROY);
if (ret) {
ibdev_dbg(&iwdev->ibdev,
"VERBS: failed MC_DESTROY MCG\n");
spin_lock_irqsave(&rf->qh_list_lock, flags);
mcast_list_add(rf, mc_qht_elem);
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
return -EAGAIN;
}
dma_free_coherent(rf->hw.device,
mc_qht_elem->mc_grp_ctx.dma_mem_mc.size,
mc_qht_elem->mc_grp_ctx.dma_mem_mc.va,
mc_qht_elem->mc_grp_ctx.dma_mem_mc.pa);
mc_qht_elem->mc_grp_ctx.dma_mem_mc.va = NULL;
irdma_free_rsrc(rf, rf->allocated_mcgs,
mc_qht_elem->mc_grp_ctx.mg_id);
kfree(mc_qht_elem);
} else {
spin_unlock_irqrestore(&rf->qh_list_lock, flags);
ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
IRDMA_OP_MC_MODIFY);
if (ret) {
ibdev_dbg(&iwdev->ibdev,
"VERBS: failed Modify MCG\n");
return ret;
}
}
return 0;
}
static int irdma_create_hw_ah(struct irdma_device *iwdev, struct irdma_ah *ah, bool sleep)
{
struct irdma_pci_f *rf = iwdev->rf;
int err;
err = irdma_alloc_rsrc(rf, rf->allocated_ahs, rf->max_ah, &ah->sc_ah.ah_info.ah_idx,
&rf->next_ah);
if (err)
return err;
err = irdma_ah_cqp_op(rf, &ah->sc_ah, IRDMA_OP_AH_CREATE, sleep,
irdma_gsi_ud_qp_ah_cb, &ah->sc_ah);
if (err) {
ibdev_dbg(&iwdev->ibdev, "VERBS: CQP-OP Create AH fail");
goto err_ah_create;
}
if (!sleep) {
int cnt = CQP_COMPL_WAIT_TIME_MS * CQP_TIMEOUT_THRESHOLD;
do {
irdma_cqp_ce_handler(rf, &rf->ccq.sc_cq);
mdelay(1);
} while (!ah->sc_ah.ah_info.ah_valid && --cnt);
if (!cnt) {
ibdev_dbg(&iwdev->ibdev, "VERBS: CQP create AH timed out");
err = -ETIMEDOUT;
goto err_ah_create;
}
}
return 0;
err_ah_create:
irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_ahs, ah->sc_ah.ah_info.ah_idx);
return err;
}
static int irdma_setup_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *attr)
{
struct irdma_pd *pd = to_iwpd(ibah->pd);
struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah);
struct rdma_ah_attr *ah_attr = attr->ah_attr;
const struct ib_gid_attr *sgid_attr;
struct irdma_device *iwdev = to_iwdev(ibah->pd->device);
struct irdma_pci_f *rf = iwdev->rf;
struct irdma_sc_ah *sc_ah;
struct irdma_ah_info *ah_info;
union irdma_sockaddr sgid_addr, dgid_addr;
int err;
u8 dmac[ETH_ALEN];
ah->pd = pd;
sc_ah = &ah->sc_ah;
sc_ah->ah_info.vsi = &iwdev->vsi;
irdma_sc_init_ah(&rf->sc_dev, sc_ah);
ah->sgid_index = ah_attr->grh.sgid_index;
sgid_attr = ah_attr->grh.sgid_attr;
memcpy(&ah->dgid, &ah_attr->grh.dgid, sizeof(ah->dgid));
rdma_gid2ip((struct sockaddr *)&sgid_addr, &sgid_attr->gid);
rdma_gid2ip((struct sockaddr *)&dgid_addr, &ah_attr->grh.dgid);
ah->av.attrs = *ah_attr;
ah->av.net_type = rdma_gid_attr_network_type(sgid_attr);
ah_info = &sc_ah->ah_info;
ah_info->pd_idx = pd->sc_pd.pd_id;
if (ah_attr->ah_flags & IB_AH_GRH) {
ah_info->flow_label = ah_attr->grh.flow_label;
ah_info->hop_ttl = ah_attr->grh.hop_limit;
ah_info->tc_tos = ah_attr->grh.traffic_class;
}
ether_addr_copy(dmac, ah_attr->roce.dmac);
if (ah->av.net_type == RDMA_NETWORK_IPV4) {
ah_info->ipv4_valid = true;
ah_info->dest_ip_addr[0] =
ntohl(dgid_addr.saddr_in.sin_addr.s_addr);
ah_info->src_ip_addr[0] =
ntohl(sgid_addr.saddr_in.sin_addr.s_addr);
ah_info->do_lpbk = irdma_ipv4_is_lpb(ah_info->src_ip_addr[0],
ah_info->dest_ip_addr[0]);
if (ipv4_is_multicast(dgid_addr.saddr_in.sin_addr.s_addr)) {
ah_info->do_lpbk = true;
irdma_mcast_mac(ah_info->dest_ip_addr, dmac, true);
}
} else {
irdma_copy_ip_ntohl(ah_info->dest_ip_addr,
dgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
irdma_copy_ip_ntohl(ah_info->src_ip_addr,
sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
ah_info->do_lpbk = irdma_ipv6_is_lpb(ah_info->src_ip_addr,
ah_info->dest_ip_addr);
if (rdma_is_multicast_addr(&dgid_addr.saddr_in6.sin6_addr)) {
ah_info->do_lpbk = true;
irdma_mcast_mac(ah_info->dest_ip_addr, dmac, false);
}
}
err = rdma_read_gid_l2_fields(sgid_attr, &ah_info->vlan_tag,
ah_info->mac_addr);
if (err)
return err;
ah_info->dst_arpindex = irdma_add_arp(iwdev->rf, ah_info->dest_ip_addr,
ah_info->ipv4_valid, dmac);
if (ah_info->dst_arpindex == -1)
return -EINVAL;
if (ah_info->vlan_tag >= VLAN_N_VID && iwdev->dcb_vlan_mode)
ah_info->vlan_tag = 0;
if (ah_info->vlan_tag < VLAN_N_VID) {
u8 prio = rt_tos2priority(ah_info->tc_tos);
prio = irdma_roce_get_vlan_prio(sgid_attr, prio);
ah_info->vlan_tag |= (u16)prio << VLAN_PRIO_SHIFT;
ah_info->insert_vlan_tag = true;
}
return 0;
}
/**
* irdma_ah_exists - Check for existing identical AH
* @iwdev: irdma device
* @new_ah: AH to check for
*
* returns true if AH is found, false if not found.
*/
static bool irdma_ah_exists(struct irdma_device *iwdev,
struct irdma_ah *new_ah)
{
struct irdma_ah *ah;
u32 key = new_ah->sc_ah.ah_info.dest_ip_addr[0] ^
new_ah->sc_ah.ah_info.dest_ip_addr[1] ^
new_ah->sc_ah.ah_info.dest_ip_addr[2] ^
new_ah->sc_ah.ah_info.dest_ip_addr[3];
hash_for_each_possible(iwdev->ah_hash_tbl, ah, list, key) {
/* Set ah_valid and ah_id the same so memcmp can work */
new_ah->sc_ah.ah_info.ah_idx = ah->sc_ah.ah_info.ah_idx;
new_ah->sc_ah.ah_info.ah_valid = ah->sc_ah.ah_info.ah_valid;
if (!memcmp(&ah->sc_ah.ah_info, &new_ah->sc_ah.ah_info,
sizeof(ah->sc_ah.ah_info))) {
refcount_inc(&ah->refcnt);
new_ah->parent_ah = ah;
return true;
}
}
return false;
}
/**
* irdma_destroy_ah - Destroy address handle
* @ibah: pointer to address handle
* @ah_flags: flags for sleepable
*/
static int irdma_destroy_ah(struct ib_ah *ibah, u32 ah_flags)
{
struct irdma_device *iwdev = to_iwdev(ibah->device);
struct irdma_ah *ah = to_iwah(ibah);
if ((ah_flags & RDMA_DESTROY_AH_SLEEPABLE) && ah->parent_ah) {
mutex_lock(&iwdev->ah_tbl_lock);
if (!refcount_dec_and_test(&ah->parent_ah->refcnt)) {
mutex_unlock(&iwdev->ah_tbl_lock);
return 0;
}
hash_del(&ah->parent_ah->list);
kfree(ah->parent_ah);
mutex_unlock(&iwdev->ah_tbl_lock);
}
irdma_ah_cqp_op(iwdev->rf, &ah->sc_ah, IRDMA_OP_AH_DESTROY,
false, NULL, ah);
irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_ahs,
ah->sc_ah.ah_info.ah_idx);
return 0;
}
/**
* irdma_create_user_ah - create user address handle
* @ibah: address handle
* @attr: address handle attributes
* @udata: User data
*
* returns 0 on success, error otherwise
*/
static int irdma_create_user_ah(struct ib_ah *ibah,
struct rdma_ah_init_attr *attr,
struct ib_udata *udata)
{
#define IRDMA_CREATE_AH_MIN_RESP_LEN offsetofend(struct irdma_create_ah_resp, rsvd)
struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah);
struct irdma_device *iwdev = to_iwdev(ibah->pd->device);
struct irdma_create_ah_resp uresp;
struct irdma_ah *parent_ah;
int err;
if (udata && udata->outlen < IRDMA_CREATE_AH_MIN_RESP_LEN)
return -EINVAL;
err = irdma_setup_ah(ibah, attr);
if (err)
return err;
mutex_lock(&iwdev->ah_tbl_lock);
if (!irdma_ah_exists(iwdev, ah)) {
err = irdma_create_hw_ah(iwdev, ah, true);
if (err) {
mutex_unlock(&iwdev->ah_tbl_lock);
return err;
}
/* Add new AH to list */
parent_ah = kmemdup(ah, sizeof(*ah), GFP_KERNEL);
if (parent_ah) {
u32 key = parent_ah->sc_ah.ah_info.dest_ip_addr[0] ^
parent_ah->sc_ah.ah_info.dest_ip_addr[1] ^
parent_ah->sc_ah.ah_info.dest_ip_addr[2] ^
parent_ah->sc_ah.ah_info.dest_ip_addr[3];
ah->parent_ah = parent_ah;
hash_add(iwdev->ah_hash_tbl, &parent_ah->list, key);
refcount_set(&parent_ah->refcnt, 1);
}
}
mutex_unlock(&iwdev->ah_tbl_lock);
uresp.ah_id = ah->sc_ah.ah_info.ah_idx;
err = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp), udata->outlen));
if (err)
irdma_destroy_ah(ibah, attr->flags);
return err;
}
/**
* irdma_create_ah - create address handle
* @ibah: address handle
* @attr: address handle attributes
* @udata: NULL
*
* returns 0 on success, error otherwise
*/
static int irdma_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *attr,
struct ib_udata *udata)
{
struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah);
struct irdma_device *iwdev = to_iwdev(ibah->pd->device);
int err;
err = irdma_setup_ah(ibah, attr);
if (err)
return err;
err = irdma_create_hw_ah(iwdev, ah, attr->flags & RDMA_CREATE_AH_SLEEPABLE);
return err;
}
/**
* irdma_query_ah - Query address handle
* @ibah: pointer to address handle
* @ah_attr: address handle attributes
*/
static int irdma_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
{
struct irdma_ah *ah = to_iwah(ibah);
memset(ah_attr, 0, sizeof(*ah_attr));
if (ah->av.attrs.ah_flags & IB_AH_GRH) {
ah_attr->ah_flags = IB_AH_GRH;
ah_attr->grh.flow_label = ah->sc_ah.ah_info.flow_label;
ah_attr->grh.traffic_class = ah->sc_ah.ah_info.tc_tos;
ah_attr->grh.hop_limit = ah->sc_ah.ah_info.hop_ttl;
ah_attr->grh.sgid_index = ah->sgid_index;
memcpy(&ah_attr->grh.dgid, &ah->dgid,
sizeof(ah_attr->grh.dgid));
}
return 0;
}
static enum rdma_link_layer irdma_get_link_layer(struct ib_device *ibdev,
u32 port_num)
{
return IB_LINK_LAYER_ETHERNET;
}
static const struct ib_device_ops irdma_roce_dev_ops = {
.attach_mcast = irdma_attach_mcast,
.create_ah = irdma_create_ah,
.create_user_ah = irdma_create_user_ah,
.destroy_ah = irdma_destroy_ah,
.detach_mcast = irdma_detach_mcast,
.get_link_layer = irdma_get_link_layer,
.get_port_immutable = irdma_roce_port_immutable,
.modify_qp = irdma_modify_qp_roce,
.query_ah = irdma_query_ah,
.query_pkey = irdma_query_pkey,
};
static const struct ib_device_ops irdma_iw_dev_ops = {
.get_port_immutable = irdma_iw_port_immutable,
.iw_accept = irdma_accept,
.iw_add_ref = irdma_qp_add_ref,
.iw_connect = irdma_connect,
.iw_create_listen = irdma_create_listen,
.iw_destroy_listen = irdma_destroy_listen,
.iw_get_qp = irdma_get_qp,
.iw_reject = irdma_reject,
.iw_rem_ref = irdma_qp_rem_ref,
.modify_qp = irdma_modify_qp,
.query_gid = irdma_query_gid,
};
static const struct ib_device_ops irdma_dev_ops = {
.owner = THIS_MODULE,
.driver_id = RDMA_DRIVER_IRDMA,
.uverbs_abi_ver = IRDMA_ABI_VER,
.alloc_hw_port_stats = irdma_alloc_hw_port_stats,
.alloc_mr = irdma_alloc_mr,
.alloc_mw = irdma_alloc_mw,
.alloc_pd = irdma_alloc_pd,
.alloc_ucontext = irdma_alloc_ucontext,
.create_cq = irdma_create_cq,
.create_qp = irdma_create_qp,
.dealloc_driver = irdma_ib_dealloc_device,
.dealloc_mw = irdma_dealloc_mw,
.dealloc_pd = irdma_dealloc_pd,
.dealloc_ucontext = irdma_dealloc_ucontext,
.dereg_mr = irdma_dereg_mr,
.destroy_cq = irdma_destroy_cq,
.destroy_qp = irdma_destroy_qp,
.disassociate_ucontext = irdma_disassociate_ucontext,
.get_dev_fw_str = irdma_get_dev_fw_str,
.get_dma_mr = irdma_get_dma_mr,
.get_hw_stats = irdma_get_hw_stats,
.map_mr_sg = irdma_map_mr_sg,
.mmap = irdma_mmap,
.mmap_free = irdma_mmap_free,
.poll_cq = irdma_poll_cq,
.post_recv = irdma_post_recv,
.post_send = irdma_post_send,
.query_device = irdma_query_device,
.query_port = irdma_query_port,
.query_qp = irdma_query_qp,
.reg_user_mr = irdma_reg_user_mr,
.reg_user_mr_dmabuf = irdma_reg_user_mr_dmabuf,
.rereg_user_mr = irdma_rereg_user_mr,
.req_notify_cq = irdma_req_notify_cq,
.resize_cq = irdma_resize_cq,
INIT_RDMA_OBJ_SIZE(ib_pd, irdma_pd, ibpd),
INIT_RDMA_OBJ_SIZE(ib_ucontext, irdma_ucontext, ibucontext),
INIT_RDMA_OBJ_SIZE(ib_ah, irdma_ah, ibah),
INIT_RDMA_OBJ_SIZE(ib_cq, irdma_cq, ibcq),
INIT_RDMA_OBJ_SIZE(ib_mw, irdma_mr, ibmw),
INIT_RDMA_OBJ_SIZE(ib_qp, irdma_qp, ibqp),
};
/**
* irdma_init_roce_device - initialization of roce rdma device
* @iwdev: irdma device
*/
static void irdma_init_roce_device(struct irdma_device *iwdev)
{
iwdev->ibdev.node_type = RDMA_NODE_IB_CA;
addrconf_addr_eui48((u8 *)&iwdev->ibdev.node_guid,
iwdev->netdev->dev_addr);
ib_set_device_ops(&iwdev->ibdev, &irdma_roce_dev_ops);
}
/**
* irdma_init_iw_device - initialization of iwarp rdma device
* @iwdev: irdma device
*/
static void irdma_init_iw_device(struct irdma_device *iwdev)
{
struct net_device *netdev = iwdev->netdev;
iwdev->ibdev.node_type = RDMA_NODE_RNIC;
addrconf_addr_eui48((u8 *)&iwdev->ibdev.node_guid,
netdev->dev_addr);
memcpy(iwdev->ibdev.iw_ifname, netdev->name,
sizeof(iwdev->ibdev.iw_ifname));
ib_set_device_ops(&iwdev->ibdev, &irdma_iw_dev_ops);
}
/**
* irdma_init_rdma_device - initialization of rdma device
* @iwdev: irdma device
*/
static void irdma_init_rdma_device(struct irdma_device *iwdev)
{
struct pci_dev *pcidev = iwdev->rf->pcidev;
if (iwdev->roce_mode)
irdma_init_roce_device(iwdev);
else
irdma_init_iw_device(iwdev);
iwdev->ibdev.phys_port_cnt = 1;
iwdev->ibdev.num_comp_vectors = iwdev->rf->ceqs_count;
iwdev->ibdev.dev.parent = &pcidev->dev;
ib_set_device_ops(&iwdev->ibdev, &irdma_dev_ops);
}
/**
* irdma_port_ibevent - indicate port event
* @iwdev: irdma device
*/
void irdma_port_ibevent(struct irdma_device *iwdev)
{
struct ib_event event;
event.device = &iwdev->ibdev;
event.element.port_num = 1;
event.event =
iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ib_dispatch_event(&event);
}
/**
* irdma_ib_unregister_device - unregister rdma device from IB
* core
* @iwdev: irdma device
*/
void irdma_ib_unregister_device(struct irdma_device *iwdev)
{
iwdev->iw_status = 0;
irdma_port_ibevent(iwdev);
ib_unregister_device(&iwdev->ibdev);
}
/**
* irdma_ib_register_device - register irdma device to IB core
* @iwdev: irdma device
*/
int irdma_ib_register_device(struct irdma_device *iwdev)
{
int ret;
irdma_init_rdma_device(iwdev);
ret = ib_device_set_netdev(&iwdev->ibdev, iwdev->netdev, 1);
if (ret)
goto error;
dma_set_max_seg_size(iwdev->rf->hw.device, UINT_MAX);
ret = ib_register_device(&iwdev->ibdev, "irdma%d", iwdev->rf->hw.device);
if (ret)
goto error;
iwdev->iw_status = 1;
irdma_port_ibevent(iwdev);
return 0;
error:
if (ret)
ibdev_dbg(&iwdev->ibdev, "VERBS: Register RDMA device fail\n");
return ret;
}
/**
* irdma_ib_dealloc_device
* @ibdev: ib device
*
* callback from ibdev dealloc_driver to deallocate resources
* unber irdma device
*/
void irdma_ib_dealloc_device(struct ib_device *ibdev)
{
struct irdma_device *iwdev = to_iwdev(ibdev);
irdma_rt_deinit_hw(iwdev);
irdma_ctrl_deinit_hw(iwdev->rf);
kfree(iwdev->rf);
}
