diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-16 02:29:07 +0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-16 02:29:07 +0400 |
commit | 82638844d9a8581bbf33201cc209a14876eca167 (patch) | |
tree | 961d7f9360194421a71aa644a9d0c176a960ce49 /drivers/infiniband/hw/cxgb3/iwch_qp.c | |
parent | 9982fbface82893e77d211fbabfbd229da6bdde6 (diff) | |
parent | 63cf13b77ab785e87c867defa8545e6d4a989774 (diff) | |
download | linux-82638844d9a8581bbf33201cc209a14876eca167.tar.xz |
Merge branch 'linus' into cpus4096
Conflicts:
arch/x86/xen/smp.c
kernel/sched_rt.c
net/iucv/iucv.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch_qp.c')
-rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch_qp.c | 261 |
1 files changed, 202 insertions, 59 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c index 992613799228..9a3be3a9d5dc 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_qp.c +++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c @@ -33,10 +33,11 @@ #include "iwch.h" #include "iwch_cm.h" #include "cxio_hal.h" +#include "cxio_resource.h" #define NO_SUPPORT -1 -static int iwch_build_rdma_send(union t3_wr *wqe, struct ib_send_wr *wr, +static int build_rdma_send(union t3_wr *wqe, struct ib_send_wr *wr, u8 * flit_cnt) { int i; @@ -44,59 +45,44 @@ static int iwch_build_rdma_send(union t3_wr *wqe, struct ib_send_wr *wr, switch (wr->opcode) { case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: if (wr->send_flags & IB_SEND_SOLICITED) wqe->send.rdmaop = T3_SEND_WITH_SE; else wqe->send.rdmaop = T3_SEND; wqe->send.rem_stag = 0; break; -#if 0 /* Not currently supported */ - case TYPE_SEND_INVALIDATE: - case TYPE_SEND_INVALIDATE_IMMEDIATE: - wqe->send.rdmaop = T3_SEND_WITH_INV; - wqe->send.rem_stag = cpu_to_be32(wr->wr.rdma.rkey); - break; - case TYPE_SEND_SE_INVALIDATE: - wqe->send.rdmaop = T3_SEND_WITH_SE_INV; - wqe->send.rem_stag = cpu_to_be32(wr->wr.rdma.rkey); + case IB_WR_SEND_WITH_INV: + if (wr->send_flags & IB_SEND_SOLICITED) + wqe->send.rdmaop = T3_SEND_WITH_SE_INV; + else + wqe->send.rdmaop = T3_SEND_WITH_INV; + wqe->send.rem_stag = cpu_to_be32(wr->ex.invalidate_rkey); break; -#endif default: - break; + return -EINVAL; } if (wr->num_sge > T3_MAX_SGE) return -EINVAL; wqe->send.reserved[0] = 0; wqe->send.reserved[1] = 0; wqe->send.reserved[2] = 0; - if (wr->opcode == IB_WR_SEND_WITH_IMM) { - plen = 4; - wqe->send.sgl[0].stag = wr->ex.imm_data; - wqe->send.sgl[0].len = __constant_cpu_to_be32(0); - wqe->send.num_sgle = __constant_cpu_to_be32(0); - *flit_cnt = 5; - } else { - plen = 0; - for (i = 0; i < wr->num_sge; i++) { - if ((plen + wr->sg_list[i].length) < plen) { - return -EMSGSIZE; - } - plen += wr->sg_list[i].length; - wqe->send.sgl[i].stag = - cpu_to_be32(wr->sg_list[i].lkey); - wqe->send.sgl[i].len = - cpu_to_be32(wr->sg_list[i].length); - wqe->send.sgl[i].to = cpu_to_be64(wr->sg_list[i].addr); - } - wqe->send.num_sgle = cpu_to_be32(wr->num_sge); - *flit_cnt = 4 + ((wr->num_sge) << 1); + plen = 0; + for (i = 0; i < wr->num_sge; i++) { + if ((plen + wr->sg_list[i].length) < plen) + return -EMSGSIZE; + + plen += wr->sg_list[i].length; + wqe->send.sgl[i].stag = cpu_to_be32(wr->sg_list[i].lkey); + wqe->send.sgl[i].len = cpu_to_be32(wr->sg_list[i].length); + wqe->send.sgl[i].to = cpu_to_be64(wr->sg_list[i].addr); } + wqe->send.num_sgle = cpu_to_be32(wr->num_sge); + *flit_cnt = 4 + ((wr->num_sge) << 1); wqe->send.plen = cpu_to_be32(plen); return 0; } -static int iwch_build_rdma_write(union t3_wr *wqe, struct ib_send_wr *wr, +static int build_rdma_write(union t3_wr *wqe, struct ib_send_wr *wr, u8 *flit_cnt) { int i; @@ -137,15 +123,18 @@ static int iwch_build_rdma_write(union t3_wr *wqe, struct ib_send_wr *wr, return 0; } -static int iwch_build_rdma_read(union t3_wr *wqe, struct ib_send_wr *wr, +static int build_rdma_read(union t3_wr *wqe, struct ib_send_wr *wr, u8 *flit_cnt) { if (wr->num_sge > 1) return -EINVAL; wqe->read.rdmaop = T3_READ_REQ; + if (wr->opcode == IB_WR_RDMA_READ_WITH_INV) + wqe->read.local_inv = 1; + else + wqe->read.local_inv = 0; wqe->read.reserved[0] = 0; wqe->read.reserved[1] = 0; - wqe->read.reserved[2] = 0; wqe->read.rem_stag = cpu_to_be32(wr->wr.rdma.rkey); wqe->read.rem_to = cpu_to_be64(wr->wr.rdma.remote_addr); wqe->read.local_stag = cpu_to_be32(wr->sg_list[0].lkey); @@ -155,6 +144,57 @@ static int iwch_build_rdma_read(union t3_wr *wqe, struct ib_send_wr *wr, return 0; } +static int build_fastreg(union t3_wr *wqe, struct ib_send_wr *wr, + u8 *flit_cnt, int *wr_cnt, struct t3_wq *wq) +{ + int i; + __be64 *p; + + if (wr->wr.fast_reg.page_list_len > T3_MAX_FASTREG_DEPTH) + return -EINVAL; + *wr_cnt = 1; + wqe->fastreg.stag = cpu_to_be32(wr->wr.fast_reg.rkey); + wqe->fastreg.len = cpu_to_be32(wr->wr.fast_reg.length); + wqe->fastreg.va_base_hi = cpu_to_be32(wr->wr.fast_reg.iova_start >> 32); + wqe->fastreg.va_base_lo_fbo = + cpu_to_be32(wr->wr.fast_reg.iova_start & 0xffffffff); + wqe->fastreg.page_type_perms = cpu_to_be32( + V_FR_PAGE_COUNT(wr->wr.fast_reg.page_list_len) | + V_FR_PAGE_SIZE(wr->wr.fast_reg.page_shift-12) | + V_FR_TYPE(TPT_VATO) | + V_FR_PERMS(iwch_ib_to_tpt_access(wr->wr.fast_reg.access_flags))); + p = &wqe->fastreg.pbl_addrs[0]; + for (i = 0; i < wr->wr.fast_reg.page_list_len; i++, p++) { + + /* If we need a 2nd WR, then set it up */ + if (i == T3_MAX_FASTREG_FRAG) { + *wr_cnt = 2; + wqe = (union t3_wr *)(wq->queue + + Q_PTR2IDX((wq->wptr+1), wq->size_log2)); + build_fw_riwrh((void *)wqe, T3_WR_FASTREG, 0, + Q_GENBIT(wq->wptr + 1, wq->size_log2), + 0, 1 + wr->wr.fast_reg.page_list_len - T3_MAX_FASTREG_FRAG, + T3_EOP); + + p = &wqe->pbl_frag.pbl_addrs[0]; + } + *p = cpu_to_be64((u64)wr->wr.fast_reg.page_list->page_list[i]); + } + *flit_cnt = 5 + wr->wr.fast_reg.page_list_len; + if (*flit_cnt > 15) + *flit_cnt = 15; + return 0; +} + +static int build_inv_stag(union t3_wr *wqe, struct ib_send_wr *wr, + u8 *flit_cnt) +{ + wqe->local_inv.stag = cpu_to_be32(wr->ex.invalidate_rkey); + wqe->local_inv.reserved = 0; + *flit_cnt = sizeof(struct t3_local_inv_wr) >> 3; + return 0; +} + /* * TBD: this is going to be moved to firmware. Missing pdid/qpid check for now. */ @@ -205,23 +245,106 @@ static int iwch_sgl2pbl_map(struct iwch_dev *rhp, struct ib_sge *sg_list, return 0; } -static int iwch_build_rdma_recv(struct iwch_dev *rhp, union t3_wr *wqe, +static int build_rdma_recv(struct iwch_qp *qhp, union t3_wr *wqe, struct ib_recv_wr *wr) { - int i; - if (wr->num_sge > T3_MAX_SGE) - return -EINVAL; + int i, err = 0; + u32 pbl_addr[T3_MAX_SGE]; + u8 page_size[T3_MAX_SGE]; + + err = iwch_sgl2pbl_map(qhp->rhp, wr->sg_list, wr->num_sge, pbl_addr, + page_size); + if (err) + return err; + wqe->recv.pagesz[0] = page_size[0]; + wqe->recv.pagesz[1] = page_size[1]; + wqe->recv.pagesz[2] = page_size[2]; + wqe->recv.pagesz[3] = page_size[3]; wqe->recv.num_sgle = cpu_to_be32(wr->num_sge); for (i = 0; i < wr->num_sge; i++) { wqe->recv.sgl[i].stag = cpu_to_be32(wr->sg_list[i].lkey); wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length); + + /* to in the WQE == the offset into the page */ + wqe->recv.sgl[i].to = cpu_to_be64(((u32) wr->sg_list[i].addr) % + (1UL << (12 + page_size[i]))); + + /* pbl_addr is the adapters address in the PBL */ + wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_addr[i]); + } + for (; i < T3_MAX_SGE; i++) { + wqe->recv.sgl[i].stag = 0; + wqe->recv.sgl[i].len = 0; + wqe->recv.sgl[i].to = 0; + wqe->recv.pbl_addr[i] = 0; + } + qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr, + qhp->wq.rq_size_log2)].wr_id = wr->wr_id; + qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr, + qhp->wq.rq_size_log2)].pbl_addr = 0; + return 0; +} + +static int build_zero_stag_recv(struct iwch_qp *qhp, union t3_wr *wqe, + struct ib_recv_wr *wr) +{ + int i; + u32 pbl_addr; + u32 pbl_offset; + + + /* + * The T3 HW requires the PBL in the HW recv descriptor to reference + * a PBL entry. So we allocate the max needed PBL memory here and pass + * it to the uP in the recv WR. The uP will build the PBL and setup + * the HW recv descriptor. + */ + pbl_addr = cxio_hal_pblpool_alloc(&qhp->rhp->rdev, T3_STAG0_PBL_SIZE); + if (!pbl_addr) + return -ENOMEM; + + /* + * Compute the 8B aligned offset. + */ + pbl_offset = (pbl_addr - qhp->rhp->rdev.rnic_info.pbl_base) >> 3; + + wqe->recv.num_sgle = cpu_to_be32(wr->num_sge); + + for (i = 0; i < wr->num_sge; i++) { + + /* + * Use a 128MB page size. This and an imposed 128MB + * sge length limit allows us to require only a 2-entry HW + * PBL for each SGE. This restriction is acceptable since + * since it is not possible to allocate 128MB of contiguous + * DMA coherent memory! + */ + if (wr->sg_list[i].length > T3_STAG0_MAX_PBE_LEN) + return -EINVAL; + wqe->recv.pagesz[i] = T3_STAG0_PAGE_SHIFT; + + /* + * T3 restricts a recv to all zero-stag or all non-zero-stag. + */ + if (wr->sg_list[i].lkey != 0) + return -EINVAL; + wqe->recv.sgl[i].stag = 0; + wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length); wqe->recv.sgl[i].to = cpu_to_be64(wr->sg_list[i].addr); + wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_offset); + pbl_offset += 2; } for (; i < T3_MAX_SGE; i++) { + wqe->recv.pagesz[i] = 0; wqe->recv.sgl[i].stag = 0; wqe->recv.sgl[i].len = 0; wqe->recv.sgl[i].to = 0; + wqe->recv.pbl_addr[i] = 0; } + qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr, + qhp->wq.rq_size_log2)].wr_id = wr->wr_id; + qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr, + qhp->wq.rq_size_log2)].pbl_addr = pbl_addr; return 0; } @@ -238,6 +361,7 @@ int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, u32 num_wrs; unsigned long flag; struct t3_swsq *sqp; + int wr_cnt = 1; qhp = to_iwch_qp(ibqp); spin_lock_irqsave(&qhp->lock, flag); @@ -262,33 +386,45 @@ int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, t3_wr_flags = 0; if (wr->send_flags & IB_SEND_SOLICITED) t3_wr_flags |= T3_SOLICITED_EVENT_FLAG; - if (wr->send_flags & IB_SEND_FENCE) - t3_wr_flags |= T3_READ_FENCE_FLAG; if (wr->send_flags & IB_SEND_SIGNALED) t3_wr_flags |= T3_COMPLETION_FLAG; sqp = qhp->wq.sq + Q_PTR2IDX(qhp->wq.sq_wptr, qhp->wq.sq_size_log2); switch (wr->opcode) { case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: + case IB_WR_SEND_WITH_INV: + if (wr->send_flags & IB_SEND_FENCE) + t3_wr_flags |= T3_READ_FENCE_FLAG; t3_wr_opcode = T3_WR_SEND; - err = iwch_build_rdma_send(wqe, wr, &t3_wr_flit_cnt); + err = build_rdma_send(wqe, wr, &t3_wr_flit_cnt); break; case IB_WR_RDMA_WRITE: case IB_WR_RDMA_WRITE_WITH_IMM: t3_wr_opcode = T3_WR_WRITE; - err = iwch_build_rdma_write(wqe, wr, &t3_wr_flit_cnt); + err = build_rdma_write(wqe, wr, &t3_wr_flit_cnt); break; case IB_WR_RDMA_READ: + case IB_WR_RDMA_READ_WITH_INV: t3_wr_opcode = T3_WR_READ; t3_wr_flags = 0; /* T3 reads are always signaled */ - err = iwch_build_rdma_read(wqe, wr, &t3_wr_flit_cnt); + err = build_rdma_read(wqe, wr, &t3_wr_flit_cnt); if (err) break; sqp->read_len = wqe->read.local_len; if (!qhp->wq.oldest_read) qhp->wq.oldest_read = sqp; break; + case IB_WR_FAST_REG_MR: + t3_wr_opcode = T3_WR_FASTREG; + err = build_fastreg(wqe, wr, &t3_wr_flit_cnt, + &wr_cnt, &qhp->wq); + break; + case IB_WR_LOCAL_INV: + if (wr->send_flags & IB_SEND_FENCE) + t3_wr_flags |= T3_LOCAL_FENCE_FLAG; + t3_wr_opcode = T3_WR_INV_STAG; + err = build_inv_stag(wqe, wr, &t3_wr_flit_cnt); + break; default: PDBG("%s post of type=%d TBD!\n", __func__, wr->opcode); @@ -307,14 +443,15 @@ int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, build_fw_riwrh((void *) wqe, t3_wr_opcode, t3_wr_flags, Q_GENBIT(qhp->wq.wptr, qhp->wq.size_log2), - 0, t3_wr_flit_cnt); + 0, t3_wr_flit_cnt, + (wr_cnt == 1) ? T3_SOPEOP : T3_SOP); PDBG("%s cookie 0x%llx wq idx 0x%x swsq idx %ld opcode %d\n", __func__, (unsigned long long) wr->wr_id, idx, Q_PTR2IDX(qhp->wq.sq_wptr, qhp->wq.sq_size_log2), sqp->opcode); wr = wr->next; num_wrs--; - ++(qhp->wq.wptr); + qhp->wq.wptr += wr_cnt; ++(qhp->wq.sq_wptr); } spin_unlock_irqrestore(&qhp->lock, flag); @@ -345,21 +482,27 @@ int iwch_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, return -EINVAL; } while (wr) { + if (wr->num_sge > T3_MAX_SGE) { + err = -EINVAL; + *bad_wr = wr; + break; + } idx = Q_PTR2IDX(qhp->wq.wptr, qhp->wq.size_log2); wqe = (union t3_wr *) (qhp->wq.queue + idx); if (num_wrs) - err = iwch_build_rdma_recv(qhp->rhp, wqe, wr); + if (wr->sg_list[0].lkey) + err = build_rdma_recv(qhp, wqe, wr); + else + err = build_zero_stag_recv(qhp, wqe, wr); else err = -ENOMEM; if (err) { *bad_wr = wr; break; } - qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr, qhp->wq.rq_size_log2)] = - wr->wr_id; build_fw_riwrh((void *) wqe, T3_WR_RCV, T3_COMPLETION_FLAG, Q_GENBIT(qhp->wq.wptr, qhp->wq.size_log2), - 0, sizeof(struct t3_receive_wr) >> 3); + 0, sizeof(struct t3_receive_wr) >> 3, T3_SOPEOP); PDBG("%s cookie 0x%llx idx 0x%x rq_wptr 0x%x rw_rptr 0x%x " "wqe %p \n", __func__, (unsigned long long) wr->wr_id, idx, qhp->wq.rq_wptr, qhp->wq.rq_rptr, wqe); @@ -419,10 +562,10 @@ int iwch_bind_mw(struct ib_qp *qp, sgl.lkey = mw_bind->mr->lkey; sgl.length = mw_bind->length; wqe->bind.reserved = 0; - wqe->bind.type = T3_VA_BASED_TO; + wqe->bind.type = TPT_VATO; /* TBD: check perms */ - wqe->bind.perms = iwch_ib_to_mwbind_access(mw_bind->mw_access_flags); + wqe->bind.perms = iwch_ib_to_tpt_access(mw_bind->mw_access_flags); wqe->bind.mr_stag = cpu_to_be32(mw_bind->mr->lkey); wqe->bind.mw_stag = cpu_to_be32(mw->rkey); wqe->bind.mw_len = cpu_to_be32(mw_bind->length); @@ -430,7 +573,7 @@ int iwch_bind_mw(struct ib_qp *qp, err = iwch_sgl2pbl_map(rhp, &sgl, 1, &pbl_addr, &page_size); if (err) { spin_unlock_irqrestore(&qhp->lock, flag); - return err; + return err; } wqe->send.wrid.id0.hi = qhp->wq.sq_wptr; sqp = qhp->wq.sq + Q_PTR2IDX(qhp->wq.sq_wptr, qhp->wq.sq_size_log2); @@ -441,10 +584,9 @@ int iwch_bind_mw(struct ib_qp *qp, sqp->signaled = (mw_bind->send_flags & IB_SEND_SIGNALED); wqe->bind.mr_pbl_addr = cpu_to_be32(pbl_addr); wqe->bind.mr_pagesz = page_size; - wqe->flit[T3_SQ_COOKIE_FLIT] = mw_bind->wr_id; build_fw_riwrh((void *)wqe, T3_WR_BIND, t3_wr_flags, Q_GENBIT(qhp->wq.wptr, qhp->wq.size_log2), 0, - sizeof(struct t3_bind_mw_wr) >> 3); + sizeof(struct t3_bind_mw_wr) >> 3, T3_SOPEOP); ++(qhp->wq.wptr); ++(qhp->wq.sq_wptr); spin_unlock_irqrestore(&qhp->lock, flag); @@ -758,7 +900,8 @@ static int rdma_init(struct iwch_dev *rhp, struct iwch_qp *qhp, init_attr.qp_dma_size = (1UL << qhp->wq.size_log2); init_attr.rqe_count = iwch_rqes_posted(qhp); init_attr.flags = qhp->attr.mpa_attr.initiator ? MPA_INITIATOR : 0; - init_attr.flags |= capable(CAP_NET_BIND_SERVICE) ? PRIV_QP : 0; + if (!qhp->ibqp.uobject) + init_attr.flags |= PRIV_QP; if (peer2peer) { init_attr.rtr_type = RTR_READ; if (init_attr.ord == 0 && qhp->attr.mpa_attr.initiator) |