diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_verbs.c | 1705 |
1 files changed, 0 insertions, 1705 deletions
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c deleted file mode 100644 index bab657f93084..000000000000 --- a/drivers/infiniband/hw/qib/qib_verbs.c +++ /dev/null @@ -1,1705 +0,0 @@ -/* - * Copyright (c) 2012 - 2018 Intel Corporation. All rights reserved. - * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include <rdma/ib_mad.h> -#include <rdma/ib_user_verbs.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/utsname.h> -#include <linux/rculist.h> -#include <linux/mm.h> -#include <linux/vmalloc.h> -#include <rdma/rdma_vt.h> - -#include "qib.h" -#include "qib_common.h" - -static unsigned int ib_qib_qp_table_size = 256; -module_param_named(qp_table_size, ib_qib_qp_table_size, uint, S_IRUGO); -MODULE_PARM_DESC(qp_table_size, "QP table size"); - -static unsigned int qib_lkey_table_size = 16; -module_param_named(lkey_table_size, qib_lkey_table_size, uint, - S_IRUGO); -MODULE_PARM_DESC(lkey_table_size, - "LKEY table size in bits (2^n, 1 <= n <= 23)"); - -static unsigned int ib_qib_max_pds = 0xFFFF; -module_param_named(max_pds, ib_qib_max_pds, uint, S_IRUGO); -MODULE_PARM_DESC(max_pds, - "Maximum number of protection domains to support"); - -static unsigned int ib_qib_max_ahs = 0xFFFF; -module_param_named(max_ahs, ib_qib_max_ahs, uint, S_IRUGO); -MODULE_PARM_DESC(max_ahs, "Maximum number of address handles to support"); - -unsigned int ib_qib_max_cqes = 0x2FFFF; -module_param_named(max_cqes, ib_qib_max_cqes, uint, S_IRUGO); -MODULE_PARM_DESC(max_cqes, - "Maximum number of completion queue entries to support"); - -unsigned int ib_qib_max_cqs = 0x1FFFF; -module_param_named(max_cqs, ib_qib_max_cqs, uint, S_IRUGO); -MODULE_PARM_DESC(max_cqs, "Maximum number of completion queues to support"); - -unsigned int ib_qib_max_qp_wrs = 0x3FFF; -module_param_named(max_qp_wrs, ib_qib_max_qp_wrs, uint, S_IRUGO); -MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support"); - -unsigned int ib_qib_max_qps = 16384; -module_param_named(max_qps, ib_qib_max_qps, uint, S_IRUGO); -MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support"); - -unsigned int ib_qib_max_sges = 0x60; -module_param_named(max_sges, ib_qib_max_sges, uint, S_IRUGO); -MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support"); - -unsigned int ib_qib_max_mcast_grps = 16384; -module_param_named(max_mcast_grps, ib_qib_max_mcast_grps, uint, S_IRUGO); -MODULE_PARM_DESC(max_mcast_grps, - "Maximum number of multicast groups to support"); - -unsigned int ib_qib_max_mcast_qp_attached = 16; -module_param_named(max_mcast_qp_attached, ib_qib_max_mcast_qp_attached, - uint, S_IRUGO); -MODULE_PARM_DESC(max_mcast_qp_attached, - "Maximum number of attached QPs to support"); - -unsigned int ib_qib_max_srqs = 1024; -module_param_named(max_srqs, ib_qib_max_srqs, uint, S_IRUGO); -MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support"); - -unsigned int ib_qib_max_srq_sges = 128; -module_param_named(max_srq_sges, ib_qib_max_srq_sges, uint, S_IRUGO); -MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support"); - -unsigned int ib_qib_max_srq_wrs = 0x1FFFF; -module_param_named(max_srq_wrs, ib_qib_max_srq_wrs, uint, S_IRUGO); -MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support"); - -static unsigned int ib_qib_disable_sma; -module_param_named(disable_sma, ib_qib_disable_sma, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(disable_sma, "Disable the SMA"); - -/* - * Translate ib_wr_opcode into ib_wc_opcode. - */ -const enum ib_wc_opcode ib_qib_wc_opcode[] = { - [IB_WR_RDMA_WRITE] = IB_WC_RDMA_WRITE, - [IB_WR_RDMA_WRITE_WITH_IMM] = IB_WC_RDMA_WRITE, - [IB_WR_SEND] = IB_WC_SEND, - [IB_WR_SEND_WITH_IMM] = IB_WC_SEND, - [IB_WR_RDMA_READ] = IB_WC_RDMA_READ, - [IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP, - [IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD -}; - -/* - * System image GUID. - */ -__be64 ib_qib_sys_image_guid; - -/* - * Count the number of DMA descriptors needed to send length bytes of data. - * Don't modify the qib_sge_state to get the count. - * Return zero if any of the segments is not aligned. - */ -static u32 qib_count_sge(struct rvt_sge_state *ss, u32 length) -{ - struct rvt_sge *sg_list = ss->sg_list; - struct rvt_sge sge = ss->sge; - u8 num_sge = ss->num_sge; - u32 ndesc = 1; /* count the header */ - - while (length) { - u32 len = rvt_get_sge_length(&sge, length); - - if (((long) sge.vaddr & (sizeof(u32) - 1)) || - (len != length && (len & (sizeof(u32) - 1)))) { - ndesc = 0; - break; - } - ndesc++; - sge.vaddr += len; - sge.length -= len; - sge.sge_length -= len; - if (sge.sge_length == 0) { - if (--num_sge) - sge = *sg_list++; - } else if (sge.length == 0 && sge.mr->lkey) { - if (++sge.n >= RVT_SEGSZ) { - if (++sge.m >= sge.mr->mapsz) - break; - sge.n = 0; - } - sge.vaddr = - sge.mr->map[sge.m]->segs[sge.n].vaddr; - sge.length = - sge.mr->map[sge.m]->segs[sge.n].length; - } - length -= len; - } - return ndesc; -} - -/* - * Copy from the SGEs to the data buffer. - */ -static void qib_copy_from_sge(void *data, struct rvt_sge_state *ss, u32 length) -{ - struct rvt_sge *sge = &ss->sge; - - while (length) { - u32 len = rvt_get_sge_length(sge, length); - - memcpy(data, sge->vaddr, len); - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr->lkey) { - if (++sge->n >= RVT_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - data += len; - length -= len; - } -} - -/** - * qib_qp_rcv - processing an incoming packet on a QP - * @rcd: the context pointer - * @hdr: the packet header - * @has_grh: true if the packet has a GRH - * @data: the packet data - * @tlen: the packet length - * @qp: the QP the packet came on - * - * This is called from qib_ib_rcv() to process an incoming packet - * for the given QP. - * Called at interrupt level. - */ -static void qib_qp_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, - int has_grh, void *data, u32 tlen, struct rvt_qp *qp) -{ - struct qib_ibport *ibp = &rcd->ppd->ibport_data; - - spin_lock(&qp->r_lock); - - /* Check for valid receive state. */ - if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK)) { - ibp->rvp.n_pkt_drops++; - goto unlock; - } - - switch (qp->ibqp.qp_type) { - case IB_QPT_SMI: - case IB_QPT_GSI: - if (ib_qib_disable_sma) - break; - fallthrough; - case IB_QPT_UD: - qib_ud_rcv(ibp, hdr, has_grh, data, tlen, qp); - break; - - case IB_QPT_RC: - qib_rc_rcv(rcd, hdr, has_grh, data, tlen, qp); - break; - - case IB_QPT_UC: - qib_uc_rcv(ibp, hdr, has_grh, data, tlen, qp); - break; - - default: - break; - } - -unlock: - spin_unlock(&qp->r_lock); -} - -/** - * qib_ib_rcv - process an incoming packet - * @rcd: the context pointer - * @rhdr: the header of the packet - * @data: the packet payload - * @tlen: the packet length - * - * This is called from qib_kreceive() to process an incoming packet at - * interrupt level. Tlen is the length of the header + data + CRC in bytes. - */ -void qib_ib_rcv(struct qib_ctxtdata *rcd, void *rhdr, void *data, u32 tlen) -{ - struct qib_pportdata *ppd = rcd->ppd; - struct qib_ibport *ibp = &ppd->ibport_data; - struct ib_header *hdr = rhdr; - struct qib_devdata *dd = ppd->dd; - struct rvt_dev_info *rdi = &dd->verbs_dev.rdi; - struct ib_other_headers *ohdr; - struct rvt_qp *qp; - u32 qp_num; - int lnh; - u8 opcode; - u16 lid; - - /* 24 == LRH+BTH+CRC */ - if (unlikely(tlen < 24)) - goto drop; - - /* Check for a valid destination LID (see ch. 7.11.1). */ - lid = be16_to_cpu(hdr->lrh[1]); - if (lid < be16_to_cpu(IB_MULTICAST_LID_BASE)) { - lid &= ~((1 << ppd->lmc) - 1); - if (unlikely(lid != ppd->lid)) - goto drop; - } - - /* Check for GRH */ - lnh = be16_to_cpu(hdr->lrh[0]) & 3; - if (lnh == QIB_LRH_BTH) - ohdr = &hdr->u.oth; - else if (lnh == QIB_LRH_GRH) { - u32 vtf; - - ohdr = &hdr->u.l.oth; - if (hdr->u.l.grh.next_hdr != IB_GRH_NEXT_HDR) - goto drop; - vtf = be32_to_cpu(hdr->u.l.grh.version_tclass_flow); - if ((vtf >> IB_GRH_VERSION_SHIFT) != IB_GRH_VERSION) - goto drop; - } else - goto drop; - - opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f; -#ifdef CONFIG_DEBUG_FS - rcd->opstats->stats[opcode].n_bytes += tlen; - rcd->opstats->stats[opcode].n_packets++; -#endif - - /* Get the destination QP number. */ - qp_num = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK; - if (qp_num == QIB_MULTICAST_QPN) { - struct rvt_mcast *mcast; - struct rvt_mcast_qp *p; - - if (lnh != QIB_LRH_GRH) - goto drop; - mcast = rvt_mcast_find(&ibp->rvp, &hdr->u.l.grh.dgid, lid); - if (mcast == NULL) - goto drop; - this_cpu_inc(ibp->pmastats->n_multicast_rcv); - rcu_read_lock(); - list_for_each_entry_rcu(p, &mcast->qp_list, list) - qib_qp_rcv(rcd, hdr, 1, data, tlen, p->qp); - rcu_read_unlock(); - /* - * Notify rvt_multicast_detach() if it is waiting for us - * to finish. - */ - if (atomic_dec_return(&mcast->refcount) <= 1) - wake_up(&mcast->wait); - } else { - rcu_read_lock(); - qp = rvt_lookup_qpn(rdi, &ibp->rvp, qp_num); - if (!qp) { - rcu_read_unlock(); - goto drop; - } - this_cpu_inc(ibp->pmastats->n_unicast_rcv); - qib_qp_rcv(rcd, hdr, lnh == QIB_LRH_GRH, data, tlen, qp); - rcu_read_unlock(); - } - return; - -drop: - ibp->rvp.n_pkt_drops++; -} - -/* - * This is called from a timer to check for QPs - * which need kernel memory in order to send a packet. - */ -static void mem_timer(struct timer_list *t) -{ - struct qib_ibdev *dev = timer_container_of(dev, t, mem_timer); - struct list_head *list = &dev->memwait; - struct rvt_qp *qp = NULL; - struct qib_qp_priv *priv = NULL; - unsigned long flags; - - spin_lock_irqsave(&dev->rdi.pending_lock, flags); - if (!list_empty(list)) { - priv = list_entry(list->next, struct qib_qp_priv, iowait); - qp = priv->owner; - list_del_init(&priv->iowait); - rvt_get_qp(qp); - if (!list_empty(list)) - mod_timer(&dev->mem_timer, jiffies + 1); - } - spin_unlock_irqrestore(&dev->rdi.pending_lock, flags); - - if (qp) { - spin_lock_irqsave(&qp->s_lock, flags); - if (qp->s_flags & RVT_S_WAIT_KMEM) { - qp->s_flags &= ~RVT_S_WAIT_KMEM; - qib_schedule_send(qp); - } - spin_unlock_irqrestore(&qp->s_lock, flags); - rvt_put_qp(qp); - } -} - -#ifdef __LITTLE_ENDIAN -static inline u32 get_upper_bits(u32 data, u32 shift) -{ - return data >> shift; -} - -static inline u32 set_upper_bits(u32 data, u32 shift) -{ - return data << shift; -} - -static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) -{ - data <<= ((sizeof(u32) - n) * BITS_PER_BYTE); - data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE); - return data; -} -#else -static inline u32 get_upper_bits(u32 data, u32 shift) -{ - return data << shift; -} - -static inline u32 set_upper_bits(u32 data, u32 shift) -{ - return data >> shift; -} - -static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) -{ - data >>= ((sizeof(u32) - n) * BITS_PER_BYTE); - data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE); - return data; -} -#endif - -static void qib_copy_io(u32 __iomem *piobuf, struct rvt_sge_state *ss, - u32 length, unsigned flush_wc) -{ - u32 extra = 0; - u32 data = 0; - u32 last; - - while (1) { - u32 len = rvt_get_sge_length(&ss->sge, length); - u32 off; - - /* If the source address is not aligned, try to align it. */ - off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1); - if (off) { - u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr & - ~(sizeof(u32) - 1)); - u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE); - u32 y; - - y = sizeof(u32) - off; - if (len > y) - len = y; - if (len + extra >= sizeof(u32)) { - data |= set_upper_bits(v, extra * - BITS_PER_BYTE); - len = sizeof(u32) - extra; - if (len == length) { - last = data; - break; - } - __raw_writel(data, piobuf); - piobuf++; - extra = 0; - data = 0; - } else { - /* Clear unused upper bytes */ - data |= clear_upper_bytes(v, len, extra); - if (len == length) { - last = data; - break; - } - extra += len; - } - } else if (extra) { - /* Source address is aligned. */ - u32 *addr = (u32 *) ss->sge.vaddr; - int shift = extra * BITS_PER_BYTE; - int ushift = 32 - shift; - u32 l = len; - - while (l >= sizeof(u32)) { - u32 v = *addr; - - data |= set_upper_bits(v, shift); - __raw_writel(data, piobuf); - data = get_upper_bits(v, ushift); - piobuf++; - addr++; - l -= sizeof(u32); - } - /* - * We still have 'extra' number of bytes leftover. - */ - if (l) { - u32 v = *addr; - - if (l + extra >= sizeof(u32)) { - data |= set_upper_bits(v, shift); - len -= l + extra - sizeof(u32); - if (len == length) { - last = data; - break; - } - __raw_writel(data, piobuf); - piobuf++; - extra = 0; - data = 0; - } else { - /* Clear unused upper bytes */ - data |= clear_upper_bytes(v, l, extra); - if (len == length) { - last = data; - break; - } - extra += l; - } - } else if (len == length) { - last = data; - break; - } - } else if (len == length) { - u32 w; - - /* - * Need to round up for the last dword in the - * packet. - */ - w = (len + 3) >> 2; - qib_pio_copy(piobuf, ss->sge.vaddr, w - 1); - piobuf += w - 1; - last = ((u32 *) ss->sge.vaddr)[w - 1]; - break; - } else { - u32 w = len >> 2; - - qib_pio_copy(piobuf, ss->sge.vaddr, w); - piobuf += w; - - extra = len & (sizeof(u32) - 1); - if (extra) { - u32 v = ((u32 *) ss->sge.vaddr)[w]; - - /* Clear unused upper bytes */ - data = clear_upper_bytes(v, extra, 0); - } - } - rvt_update_sge(ss, len, false); - length -= len; - } - /* Update address before sending packet. */ - rvt_update_sge(ss, length, false); - if (flush_wc) { - /* must flush early everything before trigger word */ - qib_flush_wc(); - __raw_writel(last, piobuf); - /* be sure trigger word is written */ - qib_flush_wc(); - } else - __raw_writel(last, piobuf); -} - -static noinline struct qib_verbs_txreq *__get_txreq(struct qib_ibdev *dev, - struct rvt_qp *qp) -{ - struct qib_qp_priv *priv = qp->priv; - struct qib_verbs_txreq *tx; - unsigned long flags; - - spin_lock_irqsave(&qp->s_lock, flags); - spin_lock(&dev->rdi.pending_lock); - - if (!list_empty(&dev->txreq_free)) { - struct list_head *l = dev->txreq_free.next; - - list_del(l); - spin_unlock(&dev->rdi.pending_lock); - spin_unlock_irqrestore(&qp->s_lock, flags); - tx = list_entry(l, struct qib_verbs_txreq, txreq.list); - } else { - if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK && - list_empty(&priv->iowait)) { - dev->n_txwait++; - qp->s_flags |= RVT_S_WAIT_TX; - list_add_tail(&priv->iowait, &dev->txwait); - } - qp->s_flags &= ~RVT_S_BUSY; - spin_unlock(&dev->rdi.pending_lock); - spin_unlock_irqrestore(&qp->s_lock, flags); - tx = ERR_PTR(-EBUSY); - } - return tx; -} - -static inline struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev, - struct rvt_qp *qp) -{ - struct qib_verbs_txreq *tx; - unsigned long flags; - - spin_lock_irqsave(&dev->rdi.pending_lock, flags); - /* assume the list non empty */ - if (likely(!list_empty(&dev->txreq_free))) { - struct list_head *l = dev->txreq_free.next; - - list_del(l); - spin_unlock_irqrestore(&dev->rdi.pending_lock, flags); - tx = list_entry(l, struct qib_verbs_txreq, txreq.list); - } else { - /* call slow path to get the extra lock */ - spin_unlock_irqrestore(&dev->rdi.pending_lock, flags); - tx = __get_txreq(dev, qp); - } - return tx; -} - -void qib_put_txreq(struct qib_verbs_txreq *tx) -{ - struct qib_ibdev *dev; - struct rvt_qp *qp; - struct qib_qp_priv *priv; - unsigned long flags; - - qp = tx->qp; - dev = to_idev(qp->ibqp.device); - - if (tx->mr) { - rvt_put_mr(tx->mr); - tx->mr = NULL; - } - if (tx->txreq.flags & QIB_SDMA_TXREQ_F_FREEBUF) { - tx->txreq.flags &= ~QIB_SDMA_TXREQ_F_FREEBUF; - dma_unmap_single(&dd_from_dev(dev)->pcidev->dev, - tx->txreq.addr, tx->hdr_dwords << 2, - DMA_TO_DEVICE); - kfree(tx->align_buf); - } - - spin_lock_irqsave(&dev->rdi.pending_lock, flags); - - /* Put struct back on free list */ - list_add(&tx->txreq.list, &dev->txreq_free); - - if (!list_empty(&dev->txwait)) { - /* Wake up first QP wanting a free struct */ - priv = list_entry(dev->txwait.next, struct qib_qp_priv, - iowait); - qp = priv->owner; - list_del_init(&priv->iowait); - rvt_get_qp(qp); - spin_unlock_irqrestore(&dev->rdi.pending_lock, flags); - - spin_lock_irqsave(&qp->s_lock, flags); - if (qp->s_flags & RVT_S_WAIT_TX) { - qp->s_flags &= ~RVT_S_WAIT_TX; - qib_schedule_send(qp); - } - spin_unlock_irqrestore(&qp->s_lock, flags); - - rvt_put_qp(qp); - } else - spin_unlock_irqrestore(&dev->rdi.pending_lock, flags); -} - -/* - * This is called when there are send DMA descriptors that might be - * available. - * - * This is called with ppd->sdma_lock held. - */ -void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail) -{ - struct rvt_qp *qp; - struct qib_qp_priv *qpp, *nqpp; - struct rvt_qp *qps[20]; - struct qib_ibdev *dev; - unsigned i, n; - - n = 0; - dev = &ppd->dd->verbs_dev; - spin_lock(&dev->rdi.pending_lock); - - /* Search wait list for first QP wanting DMA descriptors. */ - list_for_each_entry_safe(qpp, nqpp, &dev->dmawait, iowait) { - qp = qpp->owner; - if (qp->port_num != ppd->port) - continue; - if (n == ARRAY_SIZE(qps)) - break; - if (qpp->s_tx->txreq.sg_count > avail) - break; - avail -= qpp->s_tx->txreq.sg_count; - list_del_init(&qpp->iowait); - rvt_get_qp(qp); - qps[n++] = qp; - } - - spin_unlock(&dev->rdi.pending_lock); - - for (i = 0; i < n; i++) { - qp = qps[i]; - spin_lock(&qp->s_lock); - if (qp->s_flags & RVT_S_WAIT_DMA_DESC) { - qp->s_flags &= ~RVT_S_WAIT_DMA_DESC; - qib_schedule_send(qp); - } - spin_unlock(&qp->s_lock); - rvt_put_qp(qp); - } -} - -/* - * This is called with ppd->sdma_lock held. - */ -static void sdma_complete(struct qib_sdma_txreq *cookie, int status) -{ - struct qib_verbs_txreq *tx = - container_of(cookie, struct qib_verbs_txreq, txreq); - struct rvt_qp *qp = tx->qp; - struct qib_qp_priv *priv = qp->priv; - - spin_lock(&qp->s_lock); - if (tx->wqe) - rvt_send_complete(qp, tx->wqe, IB_WC_SUCCESS); - else if (qp->ibqp.qp_type == IB_QPT_RC) { - struct ib_header *hdr; - - if (tx->txreq.flags & QIB_SDMA_TXREQ_F_FREEBUF) - hdr = &tx->align_buf->hdr; - else { - struct qib_ibdev *dev = to_idev(qp->ibqp.device); - - hdr = &dev->pio_hdrs[tx->hdr_inx].hdr; - } - qib_rc_send_complete(qp, hdr); - } - if (atomic_dec_and_test(&priv->s_dma_busy)) { - if (qp->state == IB_QPS_RESET) - wake_up(&priv->wait_dma); - else if (qp->s_flags & RVT_S_WAIT_DMA) { - qp->s_flags &= ~RVT_S_WAIT_DMA; - qib_schedule_send(qp); - } - } - spin_unlock(&qp->s_lock); - - qib_put_txreq(tx); -} - -static int wait_kmem(struct qib_ibdev *dev, struct rvt_qp *qp) -{ - struct qib_qp_priv *priv = qp->priv; - unsigned long flags; - int ret = 0; - - spin_lock_irqsave(&qp->s_lock, flags); - if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) { - spin_lock(&dev->rdi.pending_lock); - if (list_empty(&priv->iowait)) { - if (list_empty(&dev->memwait)) - mod_timer(&dev->mem_timer, jiffies + 1); - qp->s_flags |= RVT_S_WAIT_KMEM; - list_add_tail(&priv->iowait, &dev->memwait); - } - spin_unlock(&dev->rdi.pending_lock); - qp->s_flags &= ~RVT_S_BUSY; - ret = -EBUSY; - } - spin_unlock_irqrestore(&qp->s_lock, flags); - - return ret; -} - -static int qib_verbs_send_dma(struct rvt_qp *qp, struct ib_header *hdr, - u32 hdrwords, struct rvt_sge_state *ss, u32 len, - u32 plen, u32 dwords) -{ - struct qib_qp_priv *priv = qp->priv; - struct qib_ibdev *dev = to_idev(qp->ibqp.device); - struct qib_devdata *dd = dd_from_dev(dev); - struct qib_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num); - struct qib_pportdata *ppd = ppd_from_ibp(ibp); - struct qib_verbs_txreq *tx; - struct qib_pio_header *phdr; - u32 control; - u32 ndesc; - int ret; - - tx = priv->s_tx; - if (tx) { - priv->s_tx = NULL; - /* resend previously constructed packet */ - ret = qib_sdma_verbs_send(ppd, tx->ss, tx->dwords, tx); - goto bail; - } - - tx = get_txreq(dev, qp); - if (IS_ERR(tx)) - goto bail_tx; - - control = dd->f_setpbc_control(ppd, plen, qp->s_srate, - be16_to_cpu(hdr->lrh[0]) >> 12); - tx->qp = qp; - tx->wqe = qp->s_wqe; - tx->mr = qp->s_rdma_mr; - if (qp->s_rdma_mr) - qp->s_rdma_mr = NULL; - tx->txreq.callback = sdma_complete; - if (dd->flags & QIB_HAS_SDMA_TIMEOUT) - tx->txreq.flags = QIB_SDMA_TXREQ_F_HEADTOHOST; - else - tx->txreq.flags = QIB_SDMA_TXREQ_F_INTREQ; - if (plen + 1 > dd->piosize2kmax_dwords) - tx->txreq.flags |= QIB_SDMA_TXREQ_F_USELARGEBUF; - - if (len) { - /* - * Don't try to DMA if it takes more descriptors than - * the queue holds. - */ - ndesc = qib_count_sge(ss, len); - if (ndesc >= ppd->sdma_descq_cnt) - ndesc = 0; - } else - ndesc = 1; - if (ndesc) { - phdr = &dev->pio_hdrs[tx->hdr_inx]; - phdr->pbc[0] = cpu_to_le32(plen); - phdr->pbc[1] = cpu_to_le32(control); - memcpy(&phdr->hdr, hdr, hdrwords << 2); - tx->txreq.flags |= QIB_SDMA_TXREQ_F_FREEDESC; - tx->txreq.sg_count = ndesc; - tx->txreq.addr = dev->pio_hdrs_phys + - tx->hdr_inx * sizeof(struct qib_pio_header); - tx->hdr_dwords = hdrwords + 2; /* add PBC length */ - ret = qib_sdma_verbs_send(ppd, ss, dwords, tx); - goto bail; - } - - /* Allocate a buffer and copy the header and payload to it. */ - tx->hdr_dwords = plen + 1; - phdr = kmalloc(tx->hdr_dwords << 2, GFP_ATOMIC); - if (!phdr) - goto err_tx; - phdr->pbc[0] = cpu_to_le32(plen); - phdr->pbc[1] = cpu_to_le32(control); - memcpy(&phdr->hdr, hdr, hdrwords << 2); - qib_copy_from_sge((u32 *) &phdr->hdr + hdrwords, ss, len); - - tx->txreq.addr = dma_map_single(&dd->pcidev->dev, phdr, - tx->hdr_dwords << 2, DMA_TO_DEVICE); - if (dma_mapping_error(&dd->pcidev->dev, tx->txreq.addr)) - goto map_err; - tx->align_buf = phdr; - tx->txreq.flags |= QIB_SDMA_TXREQ_F_FREEBUF; - tx->txreq.sg_count = 1; - ret = qib_sdma_verbs_send(ppd, NULL, 0, tx); - goto unaligned; - -map_err: - kfree(phdr); -err_tx: - qib_put_txreq(tx); - ret = wait_kmem(dev, qp); -unaligned: - ibp->rvp.n_unaligned++; -bail: - return ret; -bail_tx: - ret = PTR_ERR(tx); - goto bail; -} - -/* - * If we are now in the error state, return zero to flush the - * send work request. - */ -static int no_bufs_available(struct rvt_qp *qp) -{ - struct qib_qp_priv *priv = qp->priv; - struct qib_ibdev *dev = to_idev(qp->ibqp.device); - struct qib_devdata *dd; - unsigned long flags; - int ret = 0; - - /* - * Note that as soon as want_buffer() is called and - * possibly before it returns, qib_ib_piobufavail() - * could be called. Therefore, put QP on the I/O wait list before - * enabling the PIO avail interrupt. - */ - spin_lock_irqsave(&qp->s_lock, flags); - if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) { - spin_lock(&dev->rdi.pending_lock); - if (list_empty(&priv->iowait)) { - dev->n_piowait++; - qp->s_flags |= RVT_S_WAIT_PIO; - list_add_tail(&priv->iowait, &dev->piowait); - dd = dd_from_dev(dev); - dd->f_wantpiobuf_intr(dd, 1); - } - spin_unlock(&dev->rdi.pending_lock); - qp->s_flags &= ~RVT_S_BUSY; - ret = -EBUSY; - } - spin_unlock_irqrestore(&qp->s_lock, flags); - return ret; -} - -static int qib_verbs_send_pio(struct rvt_qp *qp, struct ib_header *ibhdr, - u32 hdrwords, struct rvt_sge_state *ss, u32 len, - u32 plen, u32 dwords) -{ - struct qib_devdata *dd = dd_from_ibdev(qp->ibqp.device); - struct qib_pportdata *ppd = dd->pport + qp->port_num - 1; - u32 *hdr = (u32 *) ibhdr; - u32 __iomem *piobuf_orig; - u32 __iomem *piobuf; - u64 pbc; - unsigned long flags; - unsigned flush_wc; - u32 control; - u32 pbufn; - - control = dd->f_setpbc_control(ppd, plen, qp->s_srate, - be16_to_cpu(ibhdr->lrh[0]) >> 12); - pbc = ((u64) control << 32) | plen; - piobuf = dd->f_getsendbuf(ppd, pbc, &pbufn); - if (unlikely(piobuf == NULL)) - return no_bufs_available(qp); - - /* - * Write the pbc. - * We have to flush after the PBC for correctness on some cpus - * or WC buffer can be written out of order. - */ - writeq(pbc, piobuf); - piobuf_orig = piobuf; - piobuf += 2; - - flush_wc = dd->flags & QIB_PIO_FLUSH_WC; - if (len == 0) { - /* - * If there is just the header portion, must flush before - * writing last word of header for correctness, and after - * the last header word (trigger word). - */ - if (flush_wc) { - qib_flush_wc(); - qib_pio_copy(piobuf, hdr, hdrwords - 1); - qib_flush_wc(); - __raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1); - qib_flush_wc(); - } else - qib_pio_copy(piobuf, hdr, hdrwords); - goto done; - } - - if (flush_wc) - qib_flush_wc(); - qib_pio_copy(piobuf, hdr, hdrwords); - piobuf += hdrwords; - - /* The common case is aligned and contained in one segment. */ - if (likely(ss->num_sge == 1 && len <= ss->sge.length && - !((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) { - u32 *addr = (u32 *) ss->sge.vaddr; - - /* Update address before sending packet. */ - rvt_update_sge(ss, len, false); - if (flush_wc) { - qib_pio_copy(piobuf, addr, dwords - 1); - /* must flush early everything before trigger word */ - qib_flush_wc(); - __raw_writel(addr[dwords - 1], piobuf + dwords - 1); - /* be sure trigger word is written */ - qib_flush_wc(); - } else - qib_pio_copy(piobuf, addr, dwords); - goto done; - } - qib_copy_io(piobuf, ss, len, flush_wc); -done: - if (dd->flags & QIB_USE_SPCL_TRIG) { - u32 spcl_off = (pbufn >= dd->piobcnt2k) ? 2047 : 1023; - - qib_flush_wc(); - __raw_writel(0xaebecede, piobuf_orig + spcl_off); - } - qib_sendbuf_done(dd, pbufn); - if (qp->s_rdma_mr) { - rvt_put_mr(qp->s_rdma_mr); - qp->s_rdma_mr = NULL; - } - if (qp->s_wqe) { - spin_lock_irqsave(&qp->s_lock, flags); - rvt_send_complete(qp, qp->s_wqe, IB_WC_SUCCESS); - spin_unlock_irqrestore(&qp->s_lock, flags); - } else if (qp->ibqp.qp_type == IB_QPT_RC) { - spin_lock_irqsave(&qp->s_lock, flags); - qib_rc_send_complete(qp, ibhdr); - spin_unlock_irqrestore(&qp->s_lock, flags); - } - return 0; -} - -/** - * qib_verbs_send - send a packet - * @qp: the QP to send on - * @hdr: the packet header - * @hdrwords: the number of 32-bit words in the header - * @ss: the SGE to send - * @len: the length of the packet in bytes - * - * Return zero if packet is sent or queued OK. - * Return non-zero and clear qp->s_flags RVT_S_BUSY otherwise. - */ -int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr, - u32 hdrwords, struct rvt_sge_state *ss, u32 len) -{ - struct qib_devdata *dd = dd_from_ibdev(qp->ibqp.device); - u32 plen; - int ret; - u32 dwords = (len + 3) >> 2; - - /* - * Calculate the send buffer trigger address. - * The +1 counts for the pbc control dword following the pbc length. - */ - plen = hdrwords + dwords + 1; - - /* - * VL15 packets (IB_QPT_SMI) will always use PIO, so we - * can defer SDMA restart until link goes ACTIVE without - * worrying about just how we got there. - */ - if (qp->ibqp.qp_type == IB_QPT_SMI || - !(dd->flags & QIB_HAS_SEND_DMA)) - ret = qib_verbs_send_pio(qp, hdr, hdrwords, ss, len, - plen, dwords); - else - ret = qib_verbs_send_dma(qp, hdr, hdrwords, ss, len, - plen, dwords); - - return ret; -} - -int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords, - u64 *rwords, u64 *spkts, u64 *rpkts, - u64 *xmit_wait) -{ - int ret; - struct qib_devdata *dd = ppd->dd; - - if (!(dd->flags & QIB_PRESENT)) { - /* no hardware, freeze, etc. */ - ret = -EINVAL; - goto bail; - } - *swords = dd->f_portcntr(ppd, QIBPORTCNTR_WORDSEND); - *rwords = dd->f_portcntr(ppd, QIBPORTCNTR_WORDRCV); - *spkts = dd->f_portcntr(ppd, QIBPORTCNTR_PKTSEND); - *rpkts = dd->f_portcntr(ppd, QIBPORTCNTR_PKTRCV); - *xmit_wait = dd->f_portcntr(ppd, QIBPORTCNTR_SENDSTALL); - - ret = 0; - -bail: - return ret; -} - -/** - * qib_get_counters - get various chip counters - * @ppd: the qlogic_ib device - * @cntrs: counters are placed here - * - * Return the counters needed by recv_pma_get_portcounters(). - */ -int qib_get_counters(struct qib_pportdata *ppd, - struct qib_verbs_counters *cntrs) -{ - int ret; - - if (!(ppd->dd->flags & QIB_PRESENT)) { - /* no hardware, freeze, etc. */ - ret = -EINVAL; - goto bail; - } - cntrs->symbol_error_counter = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBSYMBOLERR); - cntrs->link_error_recovery_counter = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBLINKERRRECOV); - /* - * The link downed counter counts when the other side downs the - * connection. We add in the number of times we downed the link - * due to local link integrity errors to compensate. - */ - cntrs->link_downed_counter = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBLINKDOWN); - cntrs->port_rcv_errors = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXDROPPKT) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RCVOVFL) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERR_RLEN) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_INVALIDRLEN) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRLINK) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRICRC) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRVCRC) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRLPCRC) + - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_BADFORMAT); - cntrs->port_rcv_errors += - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXLOCALPHYERR); - cntrs->port_rcv_errors += - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXVLERR); - cntrs->port_rcv_remphys_errors = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RCVEBP); - cntrs->port_xmit_discards = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_UNSUPVL); - cntrs->port_xmit_data = ppd->dd->f_portcntr(ppd, - QIBPORTCNTR_WORDSEND); - cntrs->port_rcv_data = ppd->dd->f_portcntr(ppd, - QIBPORTCNTR_WORDRCV); - cntrs->port_xmit_packets = ppd->dd->f_portcntr(ppd, - QIBPORTCNTR_PKTSEND); - cntrs->port_rcv_packets = ppd->dd->f_portcntr(ppd, - QIBPORTCNTR_PKTRCV); - cntrs->local_link_integrity_errors = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_LLI); - cntrs->excessive_buffer_overrun_errors = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_EXCESSBUFOVFL); - cntrs->vl15_dropped = - ppd->dd->f_portcntr(ppd, QIBPORTCNTR_VL15PKTDROP); - - ret = 0; - -bail: - return ret; -} - -/** - * qib_ib_piobufavail - callback when a PIO buffer is available - * @dd: the device pointer - * - * This is called from qib_intr() at interrupt level when a PIO buffer is - * available after qib_verbs_send() returned an error that no buffers were - * available. Disable the interrupt if there are no more QPs waiting. - */ -void qib_ib_piobufavail(struct qib_devdata *dd) -{ - struct qib_ibdev *dev = &dd->verbs_dev; - struct list_head *list; - struct rvt_qp *qps[5]; - struct rvt_qp *qp; - unsigned long flags; - unsigned i, n; - struct qib_qp_priv *priv; - - list = &dev->piowait; - n = 0; - - /* - * Note: checking that the piowait list is empty and clearing - * the buffer available interrupt needs to be atomic or we - * could end up with QPs on the wait list with the interrupt - * disabled. - */ - spin_lock_irqsave(&dev->rdi.pending_lock, flags); - while (!list_empty(list)) { - if (n == ARRAY_SIZE(qps)) - goto full; - priv = list_entry(list->next, struct qib_qp_priv, iowait); - qp = priv->owner; - list_del_init(&priv->iowait); - rvt_get_qp(qp); - qps[n++] = qp; - } - dd->f_wantpiobuf_intr(dd, 0); -full: - spin_unlock_irqrestore(&dev->rdi.pending_lock, flags); - - for (i = 0; i < n; i++) { - qp = qps[i]; - - spin_lock_irqsave(&qp->s_lock, flags); - if (qp->s_flags & RVT_S_WAIT_PIO) { - qp->s_flags &= ~RVT_S_WAIT_PIO; - qib_schedule_send(qp); - } - spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Notify qib_destroy_qp() if it is waiting. */ - rvt_put_qp(qp); - } -} - -static int qib_query_port(struct rvt_dev_info *rdi, u32 port_num, - struct ib_port_attr *props) -{ - struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); - struct qib_devdata *dd = dd_from_dev(ibdev); - struct qib_pportdata *ppd = &dd->pport[port_num - 1]; - enum ib_mtu mtu; - u16 lid = ppd->lid; - - /* props being zeroed by the caller, avoid zeroing it here */ - props->lid = lid ? lid : be16_to_cpu(IB_LID_PERMISSIVE); - props->lmc = ppd->lmc; - props->state = dd->f_iblink_state(ppd->lastibcstat); - props->phys_state = dd->f_ibphys_portstate(ppd->lastibcstat); - props->gid_tbl_len = QIB_GUIDS_PER_PORT; - props->active_width = ppd->link_width_active; - /* See rate_show() */ - props->active_speed = ppd->link_speed_active; - props->max_vl_num = qib_num_vls(ppd->vls_supported); - - props->max_mtu = qib_ibmtu ? qib_ibmtu : IB_MTU_4096; - switch (ppd->ibmtu) { - case 4096: - mtu = IB_MTU_4096; - break; - case 2048: - mtu = IB_MTU_2048; - break; - case 1024: - mtu = IB_MTU_1024; - break; - case 512: - mtu = IB_MTU_512; - break; - case 256: - mtu = IB_MTU_256; - break; - default: - mtu = IB_MTU_2048; - } - props->active_mtu = mtu; - - return 0; -} - -static int qib_modify_device(struct ib_device *device, - int device_modify_mask, - struct ib_device_modify *device_modify) -{ - struct qib_devdata *dd = dd_from_ibdev(device); - unsigned i; - int ret; - - if (device_modify_mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID | - IB_DEVICE_MODIFY_NODE_DESC)) { - ret = -EOPNOTSUPP; - goto bail; - } - - if (device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC) { - memcpy(device->node_desc, device_modify->node_desc, - IB_DEVICE_NODE_DESC_MAX); - for (i = 0; i < dd->num_pports; i++) { - struct qib_ibport *ibp = &dd->pport[i].ibport_data; - - qib_node_desc_chg(ibp); - } - } - - if (device_modify_mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) { - ib_qib_sys_image_guid = - cpu_to_be64(device_modify->sys_image_guid); - for (i = 0; i < dd->num_pports; i++) { - struct qib_ibport *ibp = &dd->pport[i].ibport_data; - - qib_sys_guid_chg(ibp); - } - } - - ret = 0; - -bail: - return ret; -} - -static int qib_shut_down_port(struct rvt_dev_info *rdi, u32 port_num) -{ - struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); - struct qib_devdata *dd = dd_from_dev(ibdev); - struct qib_pportdata *ppd = &dd->pport[port_num - 1]; - - qib_set_linkstate(ppd, QIB_IB_LINKDOWN); - - return 0; -} - -static int qib_get_guid_be(struct rvt_dev_info *rdi, struct rvt_ibport *rvp, - int guid_index, __be64 *guid) -{ - struct qib_ibport *ibp = container_of(rvp, struct qib_ibport, rvp); - struct qib_pportdata *ppd = ppd_from_ibp(ibp); - - if (guid_index == 0) - *guid = ppd->guid; - else if (guid_index < QIB_GUIDS_PER_PORT) - *guid = ibp->guids[guid_index - 1]; - else - return -EINVAL; - - return 0; -} - -int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr) -{ - if (rdma_ah_get_sl(ah_attr) > 15) - return -EINVAL; - - if (rdma_ah_get_dlid(ah_attr) == 0) - return -EINVAL; - if (rdma_ah_get_dlid(ah_attr) >= - be16_to_cpu(IB_MULTICAST_LID_BASE) && - rdma_ah_get_dlid(ah_attr) != - be16_to_cpu(IB_LID_PERMISSIVE) && - !(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH)) - return -EINVAL; - - return 0; -} - -static void qib_notify_new_ah(struct ib_device *ibdev, - struct rdma_ah_attr *ah_attr, - struct rvt_ah *ah) -{ - struct qib_ibport *ibp; - struct qib_pportdata *ppd; - - /* - * Do not trust reading anything from rvt_ah at this point as it is not - * done being setup. We can however modify things which we need to set. - */ - - ibp = to_iport(ibdev, rdma_ah_get_port_num(ah_attr)); - ppd = ppd_from_ibp(ibp); - ah->vl = ibp->sl_to_vl[rdma_ah_get_sl(&ah->attr)]; - ah->log_pmtu = ilog2(ppd->ibmtu); -} - -struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid) -{ - struct rdma_ah_attr attr; - struct ib_ah *ah = ERR_PTR(-EINVAL); - struct rvt_qp *qp0; - struct qib_pportdata *ppd = ppd_from_ibp(ibp); - struct qib_devdata *dd = dd_from_ppd(ppd); - u32 port_num = ppd->port; - - memset(&attr, 0, sizeof(attr)); - attr.type = rdma_ah_find_type(&dd->verbs_dev.rdi.ibdev, port_num); - rdma_ah_set_dlid(&attr, dlid); - rdma_ah_set_port_num(&attr, port_num); - rcu_read_lock(); - qp0 = rcu_dereference(ibp->rvp.qp[0]); - if (qp0) - ah = rdma_create_ah(qp0->ibqp.pd, &attr, 0); - rcu_read_unlock(); - return ah; -} - -/** - * qib_get_npkeys - return the size of the PKEY table for context 0 - * @dd: the qlogic_ib device - */ -unsigned qib_get_npkeys(struct qib_devdata *dd) -{ - return ARRAY_SIZE(dd->rcd[0]->pkeys); -} - -/* - * Return the indexed PKEY from the port PKEY table. - * No need to validate rcd[ctxt]; the port is setup if we are here. - */ -unsigned qib_get_pkey(struct qib_ibport *ibp, unsigned index) -{ - struct qib_pportdata *ppd = ppd_from_ibp(ibp); - struct qib_devdata *dd = ppd->dd; - unsigned ctxt = ppd->hw_pidx; - unsigned ret; - - /* dd->rcd null if mini_init or some init failures */ - if (!dd->rcd || index >= ARRAY_SIZE(dd->rcd[ctxt]->pkeys)) - ret = 0; - else - ret = dd->rcd[ctxt]->pkeys[index]; - - return ret; -} - -static void init_ibport(struct qib_pportdata *ppd) -{ - struct qib_verbs_counters cntrs; - struct qib_ibport *ibp = &ppd->ibport_data; - - spin_lock_init(&ibp->rvp.lock); - /* Set the prefix to the default value (see ch. 4.1.1) */ - ibp->rvp.gid_prefix = IB_DEFAULT_GID_PREFIX; - ibp->rvp.sm_lid = be16_to_cpu(IB_LID_PERMISSIVE); - ibp->rvp.port_cap_flags = IB_PORT_SYS_IMAGE_GUID_SUP | - IB_PORT_CLIENT_REG_SUP | IB_PORT_SL_MAP_SUP | - IB_PORT_TRAP_SUP | IB_PORT_AUTO_MIGR_SUP | - IB_PORT_DR_NOTICE_SUP | IB_PORT_CAP_MASK_NOTICE_SUP | - IB_PORT_OTHER_LOCAL_CHANGES_SUP; - if (ppd->dd->flags & QIB_HAS_LINK_LATENCY) - ibp->rvp.port_cap_flags |= IB_PORT_LINK_LATENCY_SUP; - ibp->rvp.pma_counter_select[0] = IB_PMA_PORT_XMIT_DATA; - ibp->rvp.pma_counter_select[1] = IB_PMA_PORT_RCV_DATA; - ibp->rvp.pma_counter_select[2] = IB_PMA_PORT_XMIT_PKTS; - ibp->rvp.pma_counter_select[3] = IB_PMA_PORT_RCV_PKTS; - ibp->rvp.pma_counter_select[4] = IB_PMA_PORT_XMIT_WAIT; - - /* Snapshot current HW counters to "clear" them. */ - qib_get_counters(ppd, &cntrs); - ibp->z_symbol_error_counter = cntrs.symbol_error_counter; - ibp->z_link_error_recovery_counter = - cntrs.link_error_recovery_counter; - ibp->z_link_downed_counter = cntrs.link_downed_counter; - ibp->z_port_rcv_errors = cntrs.port_rcv_errors; - ibp->z_port_rcv_remphys_errors = cntrs.port_rcv_remphys_errors; - ibp->z_port_xmit_discards = cntrs.port_xmit_discards; - ibp->z_port_xmit_data = cntrs.port_xmit_data; - ibp->z_port_rcv_data = cntrs.port_rcv_data; - ibp->z_port_xmit_packets = cntrs.port_xmit_packets; - ibp->z_port_rcv_packets = cntrs.port_rcv_packets; - ibp->z_local_link_integrity_errors = - cntrs.local_link_integrity_errors; - ibp->z_excessive_buffer_overrun_errors = - cntrs.excessive_buffer_overrun_errors; - ibp->z_vl15_dropped = cntrs.vl15_dropped; - RCU_INIT_POINTER(ibp->rvp.qp[0], NULL); - RCU_INIT_POINTER(ibp->rvp.qp[1], NULL); -} - -/** - * qib_fill_device_attr - Fill in rvt dev info device attributes. - * @dd: the device data structure - */ -static void qib_fill_device_attr(struct qib_devdata *dd) -{ - struct rvt_dev_info *rdi = &dd->verbs_dev.rdi; - - memset(&rdi->dparms.props, 0, sizeof(rdi->dparms.props)); - - rdi->dparms.props.max_pd = ib_qib_max_pds; - rdi->dparms.props.max_ah = ib_qib_max_ahs; - rdi->dparms.props.device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | - IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | - IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | - IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE; - rdi->dparms.props.page_size_cap = PAGE_SIZE; - rdi->dparms.props.vendor_id = - QIB_SRC_OUI_1 << 16 | QIB_SRC_OUI_2 << 8 | QIB_SRC_OUI_3; - rdi->dparms.props.vendor_part_id = dd->deviceid; - rdi->dparms.props.hw_ver = dd->minrev; - rdi->dparms.props.sys_image_guid = ib_qib_sys_image_guid; - rdi->dparms.props.max_mr_size = ~0ULL; - rdi->dparms.props.max_qp = ib_qib_max_qps; - rdi->dparms.props.max_qp_wr = ib_qib_max_qp_wrs; - rdi->dparms.props.max_send_sge = ib_qib_max_sges; - rdi->dparms.props.max_recv_sge = ib_qib_max_sges; - rdi->dparms.props.max_sge_rd = ib_qib_max_sges; - rdi->dparms.props.max_cq = ib_qib_max_cqs; - rdi->dparms.props.max_cqe = ib_qib_max_cqes; - rdi->dparms.props.max_ah = ib_qib_max_ahs; - rdi->dparms.props.max_qp_rd_atom = QIB_MAX_RDMA_ATOMIC; - rdi->dparms.props.max_qp_init_rd_atom = 255; - rdi->dparms.props.max_srq = ib_qib_max_srqs; - rdi->dparms.props.max_srq_wr = ib_qib_max_srq_wrs; - rdi->dparms.props.max_srq_sge = ib_qib_max_srq_sges; - rdi->dparms.props.atomic_cap = IB_ATOMIC_GLOB; - rdi->dparms.props.max_pkeys = qib_get_npkeys(dd); - rdi->dparms.props.max_mcast_grp = ib_qib_max_mcast_grps; - rdi->dparms.props.max_mcast_qp_attach = ib_qib_max_mcast_qp_attached; - rdi->dparms.props.max_total_mcast_qp_attach = - rdi->dparms.props.max_mcast_qp_attach * - rdi->dparms.props.max_mcast_grp; - /* post send table */ - dd->verbs_dev.rdi.post_parms = qib_post_parms; - - /* opcode translation table */ - dd->verbs_dev.rdi.wc_opcode = ib_qib_wc_opcode; -} - -static const struct ib_device_ops qib_dev_ops = { - .owner = THIS_MODULE, - .driver_id = RDMA_DRIVER_QIB, - - .port_groups = qib_attr_port_groups, - .device_group = &qib_attr_group, - .modify_device = qib_modify_device, - .process_mad = qib_process_mad, -}; - -/** - * qib_register_ib_device - register our device with the infiniband core - * @dd: the device data structure - * Return the allocated qib_ibdev pointer or NULL on error. - */ -int qib_register_ib_device(struct qib_devdata *dd) -{ - struct qib_ibdev *dev = &dd->verbs_dev; - struct ib_device *ibdev = &dev->rdi.ibdev; - struct qib_pportdata *ppd = dd->pport; - unsigned i, ctxt; - int ret; - - for (i = 0; i < dd->num_pports; i++) - init_ibport(ppd + i); - - /* Only need to initialize non-zero fields. */ - timer_setup(&dev->mem_timer, mem_timer, 0); - - INIT_LIST_HEAD(&dev->piowait); - INIT_LIST_HEAD(&dev->dmawait); - INIT_LIST_HEAD(&dev->txwait); - INIT_LIST_HEAD(&dev->memwait); - INIT_LIST_HEAD(&dev->txreq_free); - - if (ppd->sdma_descq_cnt) { - dev->pio_hdrs = dma_alloc_coherent(&dd->pcidev->dev, - ppd->sdma_descq_cnt * - sizeof(struct qib_pio_header), - &dev->pio_hdrs_phys, - GFP_KERNEL); - if (!dev->pio_hdrs) { - ret = -ENOMEM; - goto err_hdrs; - } - } - - for (i = 0; i < ppd->sdma_descq_cnt; i++) { - struct qib_verbs_txreq *tx; - - tx = kzalloc(sizeof(*tx), GFP_KERNEL); - if (!tx) { - ret = -ENOMEM; - goto err_tx; - } - tx->hdr_inx = i; - list_add(&tx->txreq.list, &dev->txreq_free); - } - - /* - * The system image GUID is supposed to be the same for all - * IB HCAs in a single system but since there can be other - * device types in the system, we can't be sure this is unique. - */ - if (!ib_qib_sys_image_guid) - ib_qib_sys_image_guid = ppd->guid; - - ibdev->node_guid = ppd->guid; - ibdev->phys_port_cnt = dd->num_pports; - ibdev->dev.parent = &dd->pcidev->dev; - - snprintf(ibdev->node_desc, sizeof(ibdev->node_desc), - "Intel Infiniband HCA %.42s", init_utsname()->nodename); - - /* - * Fill in rvt info object. - */ - dd->verbs_dev.rdi.driver_f.get_pci_dev = qib_get_pci_dev; - dd->verbs_dev.rdi.driver_f.check_ah = qib_check_ah; - dd->verbs_dev.rdi.driver_f.setup_wqe = qib_check_send_wqe; - dd->verbs_dev.rdi.driver_f.notify_new_ah = qib_notify_new_ah; - dd->verbs_dev.rdi.driver_f.alloc_qpn = qib_alloc_qpn; - dd->verbs_dev.rdi.driver_f.qp_priv_alloc = qib_qp_priv_alloc; - dd->verbs_dev.rdi.driver_f.qp_priv_free = qib_qp_priv_free; - dd->verbs_dev.rdi.driver_f.free_all_qps = qib_free_all_qps; - dd->verbs_dev.rdi.driver_f.notify_qp_reset = qib_notify_qp_reset; - dd->verbs_dev.rdi.driver_f.do_send = qib_do_send; - dd->verbs_dev.rdi.driver_f.schedule_send = qib_schedule_send; - dd->verbs_dev.rdi.driver_f.quiesce_qp = qib_quiesce_qp; - dd->verbs_dev.rdi.driver_f.stop_send_queue = qib_stop_send_queue; - dd->verbs_dev.rdi.driver_f.flush_qp_waiters = qib_flush_qp_waiters; - dd->verbs_dev.rdi.driver_f.notify_error_qp = qib_notify_error_qp; - dd->verbs_dev.rdi.driver_f.notify_restart_rc = qib_restart_rc; - dd->verbs_dev.rdi.driver_f.mtu_to_path_mtu = qib_mtu_to_path_mtu; - dd->verbs_dev.rdi.driver_f.mtu_from_qp = qib_mtu_from_qp; - dd->verbs_dev.rdi.driver_f.get_pmtu_from_attr = qib_get_pmtu_from_attr; - dd->verbs_dev.rdi.driver_f.schedule_send_no_lock = _qib_schedule_send; - dd->verbs_dev.rdi.driver_f.query_port_state = qib_query_port; - dd->verbs_dev.rdi.driver_f.shut_down_port = qib_shut_down_port; - dd->verbs_dev.rdi.driver_f.cap_mask_chg = qib_cap_mask_chg; - dd->verbs_dev.rdi.driver_f.notify_create_mad_agent = - qib_notify_create_mad_agent; - dd->verbs_dev.rdi.driver_f.notify_free_mad_agent = - qib_notify_free_mad_agent; - - dd->verbs_dev.rdi.dparms.max_rdma_atomic = QIB_MAX_RDMA_ATOMIC; - dd->verbs_dev.rdi.driver_f.get_guid_be = qib_get_guid_be; - dd->verbs_dev.rdi.dparms.lkey_table_size = qib_lkey_table_size; - dd->verbs_dev.rdi.dparms.qp_table_size = ib_qib_qp_table_size; - dd->verbs_dev.rdi.dparms.qpn_start = 1; - dd->verbs_dev.rdi.dparms.qpn_res_start = QIB_KD_QP; - dd->verbs_dev.rdi.dparms.qpn_res_end = QIB_KD_QP; /* Reserve one QP */ - dd->verbs_dev.rdi.dparms.qpn_inc = 1; - dd->verbs_dev.rdi.dparms.qos_shift = 1; - dd->verbs_dev.rdi.dparms.psn_mask = QIB_PSN_MASK; - dd->verbs_dev.rdi.dparms.psn_shift = QIB_PSN_SHIFT; - dd->verbs_dev.rdi.dparms.psn_modify_mask = QIB_PSN_MASK; - dd->verbs_dev.rdi.dparms.nports = dd->num_pports; - dd->verbs_dev.rdi.dparms.npkeys = qib_get_npkeys(dd); - dd->verbs_dev.rdi.dparms.node = dd->assigned_node_id; - dd->verbs_dev.rdi.dparms.core_cap_flags = RDMA_CORE_PORT_IBA_IB; - dd->verbs_dev.rdi.dparms.max_mad_size = IB_MGMT_MAD_SIZE; - dd->verbs_dev.rdi.dparms.sge_copy_mode = RVT_SGE_COPY_MEMCPY; - - qib_fill_device_attr(dd); - - ppd = dd->pport; - for (i = 0; i < dd->num_pports; i++, ppd++) { - ctxt = ppd->hw_pidx; - rvt_init_port(&dd->verbs_dev.rdi, - &ppd->ibport_data.rvp, - i, - dd->rcd[ctxt]->pkeys); - } - - ib_set_device_ops(ibdev, &qib_dev_ops); - ret = rvt_register_device(&dd->verbs_dev.rdi); - if (ret) - goto err_tx; - - return ret; - -err_tx: - while (!list_empty(&dev->txreq_free)) { - struct list_head *l = dev->txreq_free.next; - struct qib_verbs_txreq *tx; - - list_del(l); - tx = list_entry(l, struct qib_verbs_txreq, txreq.list); - kfree(tx); - } - if (ppd->sdma_descq_cnt) - dma_free_coherent(&dd->pcidev->dev, - ppd->sdma_descq_cnt * - sizeof(struct qib_pio_header), - dev->pio_hdrs, dev->pio_hdrs_phys); -err_hdrs: - qib_dev_err(dd, "cannot register verbs: %d!\n", -ret); - return ret; -} - -void qib_unregister_ib_device(struct qib_devdata *dd) -{ - struct qib_ibdev *dev = &dd->verbs_dev; - - rvt_unregister_device(&dd->verbs_dev.rdi); - - if (!list_empty(&dev->piowait)) - qib_dev_err(dd, "piowait list not empty!\n"); - if (!list_empty(&dev->dmawait)) - qib_dev_err(dd, "dmawait list not empty!\n"); - if (!list_empty(&dev->txwait)) - qib_dev_err(dd, "txwait list not empty!\n"); - if (!list_empty(&dev->memwait)) - qib_dev_err(dd, "memwait list not empty!\n"); - - timer_delete_sync(&dev->mem_timer); - while (!list_empty(&dev->txreq_free)) { - struct list_head *l = dev->txreq_free.next; - struct qib_verbs_txreq *tx; - - list_del(l); - tx = list_entry(l, struct qib_verbs_txreq, txreq.list); - kfree(tx); - } - if (dd->pport->sdma_descq_cnt) - dma_free_coherent(&dd->pcidev->dev, - dd->pport->sdma_descq_cnt * - sizeof(struct qib_pio_header), - dev->pio_hdrs, dev->pio_hdrs_phys); -} - -/** - * _qib_schedule_send - schedule progress - * @qp: the qp - * - * This schedules progress w/o regard to the s_flags. - * - * It is only used in post send, which doesn't hold - * the s_lock. - */ -bool _qib_schedule_send(struct rvt_qp *qp) -{ - struct qib_ibport *ibp = - to_iport(qp->ibqp.device, qp->port_num); - struct qib_pportdata *ppd = ppd_from_ibp(ibp); - struct qib_qp_priv *priv = qp->priv; - - return queue_work(ppd->qib_wq, &priv->s_work); -} - -/** - * qib_schedule_send - schedule progress - * @qp: the qp - * - * This schedules qp progress. The s_lock - * should be held. - */ -bool qib_schedule_send(struct rvt_qp *qp) -{ - if (qib_send_ok(qp)) - return _qib_schedule_send(qp); - return false; -} |