Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757406AbYJIAez (ORCPT ); Wed, 8 Oct 2008 20:34:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756576AbYJIAeQ (ORCPT ); Wed, 8 Oct 2008 20:34:16 -0400 Received: from stargate.chelsio.com ([12.22.49.110]:22593 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756035AbYJIAeJ (ORCPT ); Wed, 8 Oct 2008 20:34:09 -0400 From: Divy Le Ray Subject: [PATCH 2/8 2.6.28] cxgb3 - Allocate multiqueues at init time To: jeff@garzik.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, swise@opengridcomputing.com Date: Wed, 08 Oct 2008 17:34:02 -0700 Message-ID: <20081009003402.13315.18192.stgit@speedy5> User-Agent: StGIT/0.13 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 11572 Lines: 381 From: Divy Le Ray Allocate a queue set per core, up to the maximum of available qsets. Share the queue sets on multi port adapters. Rename MSI-X interrupt vectors ethX-N, N being the queue set number. Signed-off-by: Divy Le Ray --- drivers/net/cxgb3/common.h | 1 drivers/net/cxgb3/cxgb3_ioctl.h | 2 drivers/net/cxgb3/cxgb3_main.c | 179 +++++++++++++++++++++++++++++++-------- 3 files changed, 145 insertions(+), 37 deletions(-) diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h index d6dbcd4..ace6b58 100644 --- a/drivers/net/cxgb3/common.h +++ b/drivers/net/cxgb3/common.h @@ -358,6 +358,7 @@ struct qset_params { /* SGE queue set parameters */ unsigned int jumbo_size; /* # of entries in jumbo free list */ unsigned int txq_size[SGE_TXQ_PER_SET]; /* Tx queue sizes */ unsigned int cong_thres; /* FL congestion threshold */ + unsigned int vector; /* Interrupt (line or vector) number */ }; struct sge_params { diff --git a/drivers/net/cxgb3/cxgb3_ioctl.h b/drivers/net/cxgb3/cxgb3_ioctl.h index 68200a1..3e8d5fa 100644 --- a/drivers/net/cxgb3/cxgb3_ioctl.h +++ b/drivers/net/cxgb3/cxgb3_ioctl.h @@ -92,6 +92,8 @@ struct ch_qset_params { int32_t polling; int32_t lro; int32_t cong_thres; + int32_t vector; + int32_t qnum; }; struct ch_pktsched_params { diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index 0e51d49..fea2c71 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -274,10 +274,10 @@ static void name_msix_vecs(struct adapter *adap) for (i = 0; i < pi->nqsets; i++, msi_idx++) { snprintf(adap->msix_info[msi_idx].desc, n, - "%s (queue %d)", d->name, i); + "%s-%d", d->name, pi->first_qset + i); adap->msix_info[msi_idx].desc[n] = 0; } - } + } } static int request_msix_data_irqs(struct adapter *adap) @@ -306,6 +306,22 @@ static int request_msix_data_irqs(struct adapter *adap) return 0; } +static void free_irq_resources(struct adapter *adapter) +{ + if (adapter->flags & USING_MSIX) { + int i, n = 0; + + free_irq(adapter->msix_info[0].vec, adapter); + for_each_port(adapter, i) + n += adap2pinfo(adapter, i)->nqsets; + + for (i = 0; i < n; ++i) + free_irq(adapter->msix_info[i + 1].vec, + &adapter->sge.qs[i]); + } else + free_irq(adapter->pdev->irq, adapter); +} + static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt, unsigned long n) { @@ -473,7 +489,10 @@ static int setup_sge_qsets(struct adapter *adap) struct port_info *pi = netdev_priv(dev); pi->qs = &adap->sge.qs[pi->first_qset]; - for (j = 0; j < pi->nqsets; ++j, ++qset_idx) { + for (j = pi->first_qset; j < pi->first_qset + pi->nqsets; + ++j, ++qset_idx) { + if (!pi->rx_csum_offload) + adap->params.sge.qset[qset_idx].lro = 0; err = t3_sge_alloc_qset(adap, qset_idx, 1, (adap->flags & USING_MSIX) ? qset_idx + 1 : irq_idx, @@ -740,11 +759,12 @@ static void init_port_mtus(struct adapter *adapter) t3_write_reg(adapter, A_TP_MTU_PORT_TABLE, mtus); } -static void send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo, +static int send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo, int hi, int port) { struct sk_buff *skb; struct mngt_pktsched_wr *req; + int ret; skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL); req = (struct mngt_pktsched_wr *)skb_put(skb, sizeof(*req)); @@ -755,20 +775,28 @@ static void send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo, req->min = lo; req->max = hi; req->binding = port; - t3_mgmt_tx(adap, skb); + ret = t3_mgmt_tx(adap, skb); + + return ret; } -static void bind_qsets(struct adapter *adap) +static int bind_qsets(struct adapter *adap) { - int i, j; + int i, j, err = 0; for_each_port(adap, i) { const struct port_info *pi = adap2pinfo(adap, i); - for (j = 0; j < pi->nqsets; ++j) - send_pktsched_cmd(adap, 1, pi->first_qset + j, -1, - -1, i); + for (j = 0; j < pi->nqsets; ++j) { + int ret = send_pktsched_cmd(adap, 1, + pi->first_qset + j, -1, + -1, i); + if (ret) + err = ret; + } } + + return err; } #define FW_FNAME "t3fw-%d.%d.%d.bin" @@ -954,9 +982,16 @@ static int cxgb_up(struct adapter *adap) t3_write_reg(adap, A_TP_INT_ENABLE, 0x7fbfffff); } - if ((adap->flags & (USING_MSIX | QUEUES_BOUND)) == USING_MSIX) - bind_qsets(adap); - adap->flags |= QUEUES_BOUND; + if (!(adap->flags & QUEUES_BOUND)) { + err = bind_qsets(adap); + if (err) { + CH_ERR(adap, "failed to bind qsets, err %d\n", err); + t3_intr_disable(adap); + free_irq_resources(adap); + goto out; + } + adap->flags |= QUEUES_BOUND; + } out: return err; @@ -975,19 +1010,7 @@ static void cxgb_down(struct adapter *adapter) t3_intr_disable(adapter); spin_unlock_irq(&adapter->work_lock); - if (adapter->flags & USING_MSIX) { - int i, n = 0; - - free_irq(adapter->msix_info[0].vec, adapter); - for_each_port(adapter, i) - n += adap2pinfo(adapter, i)->nqsets; - - for (i = 0; i < n; ++i) - free_irq(adapter->msix_info[i + 1].vec, - &adapter->sge.qs[i]); - } else - free_irq(adapter->pdev->irq, adapter); - + free_irq_resources(adapter); flush_workqueue(cxgb3_wq); /* wait for external IRQ handler */ quiesce_rx(adapter); } @@ -1292,8 +1315,8 @@ static unsigned long collect_sge_port_stats(struct adapter *adapter, int i; unsigned long tot = 0; - for (i = 0; i < p->nqsets; ++i) - tot += adapter->sge.qs[i + p->first_qset].port_stats[idx]; + for (i = p->first_qset; i < p->first_qset + p->nqsets; ++i) + tot += adapter->sge.qs[i].port_stats[idx]; return tot; } @@ -1497,7 +1520,7 @@ static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd) struct link_config *lc = &p->link_config; if (!(lc->supported & SUPPORTED_Autoneg)) - return -EOPNOTSUPP; /* can't change speed/duplex */ + return -EOPNOTSUPP; /* can't change speed/duplex */ if (cmd->autoneg == AUTONEG_DISABLE) { int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex); @@ -1576,8 +1599,10 @@ static int set_rx_csum(struct net_device *dev, u32 data) struct adapter *adap = p->adapter; int i; - for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) + for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { + adap->params.sge.qset[i].lro = 0; adap->sge.qs[i].lro_enabled = 0; + } } return 0; } @@ -1783,6 +1808,8 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) int i; struct qset_params *q; struct ch_qset_params t; + int q1 = pi->first_qset; + int nqsets = pi->nqsets; if (!capable(CAP_NET_ADMIN)) return -EPERM; @@ -1805,6 +1832,16 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) || !in_range(t.rspq_size, MIN_RSPQ_ENTRIES, MAX_RSPQ_ENTRIES)) return -EINVAL; + + if ((adapter->flags & FULL_INIT_DONE) && t.lro > 0) + for_each_port(adapter, i) { + pi = adap2pinfo(adapter, i); + if (t.qset_idx >= pi->first_qset && + t.qset_idx < pi->first_qset + pi->nqsets && + !pi->rx_csum_offload) + return -EINVAL; + } + if ((adapter->flags & FULL_INIT_DONE) && (t.rspq_size >= 0 || t.fl_size[0] >= 0 || t.fl_size[1] >= 0 || t.txq_size[0] >= 0 || @@ -1812,6 +1849,20 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) t.polling >= 0 || t.cong_thres >= 0)) return -EBUSY; + /* Allow setting of any available qset when offload enabled */ + if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { + q1 = 0; + for_each_port(adapter, i) { + pi = adap2pinfo(adapter, i); + nqsets += pi->first_qset + pi->nqsets; + } + } + + if (t.qset_idx < q1) + return -EINVAL; + if (t.qset_idx > q1 + nqsets - 1) + return -EINVAL; + q = &adapter->params.sge.qset[t.qset_idx]; if (t.rspq_size >= 0) @@ -1861,13 +1912,26 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) case CHELSIO_GET_QSET_PARAMS:{ struct qset_params *q; struct ch_qset_params t; + int q1 = pi->first_qset; + int nqsets = pi->nqsets; + int i; if (copy_from_user(&t, useraddr, sizeof(t))) return -EFAULT; - if (t.qset_idx >= SGE_QSETS) + + /* Display qsets for all ports when offload enabled */ + if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { + q1 = 0; + for_each_port(adapter, i) { + pi = adap2pinfo(adapter, i); + nqsets = pi->first_qset + pi->nqsets; + } + } + + if (t.qset_idx >= nqsets) return -EINVAL; - q = &adapter->params.sge.qset[t.qset_idx]; + q = &adapter->params.sge.qset[q1 + t.qset_idx]; t.rspq_size = q->rspq_size; t.txq_size[0] = q->txq_size[0]; t.txq_size[1] = q->txq_size[1]; @@ -1878,6 +1942,12 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) t.lro = q->lro; t.intr_lat = q->coalesce_usecs; t.cong_thres = q->cong_thres; + t.qnum = q1; + + if (adapter->flags & USING_MSIX) + t.vector = adapter->msix_info[q1 + t.qset_idx + 1].vec; + else + t.vector = adapter->pdev->irq; if (copy_to_user(useraddr, &t, sizeof(t))) return -EFAULT; @@ -2223,8 +2293,8 @@ static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p) { int i; - for (i = 0; i < p->nqsets; i++) { - struct sge_rspq *q = &adap->sge.qs[i + p->first_qset].rspq; + for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { + struct sge_rspq *q = &adap->sge.qs[i].rspq; spin_lock_irq(&q->lock); spin_unlock_irq(&q->lock); @@ -2581,6 +2651,42 @@ static struct pci_error_handlers t3_err_handler = { .resume = t3_io_resume, }; +/* + * Set the number of qsets based on the number of CPUs and the number of ports, + * not to exceed the number of available qsets, assuming there are enough qsets + * per port in HW. + */ +static void set_nqsets(struct adapter *adap) +{ + int i, j = 0; + int num_cpus = num_online_cpus(); + int hwports = adap->params.nports; + int nqsets = SGE_QSETS; + + if (adap->params.rev > 0) { + if (hwports == 2 && + (hwports * nqsets > SGE_QSETS || + num_cpus >= nqsets / hwports)) + nqsets /= hwports; + if (nqsets > num_cpus) + nqsets = num_cpus; + if (nqsets < 1 || hwports == 4) + nqsets = 1; + } else + nqsets = 1; + + for_each_port(adap, i) { + struct port_info *pi = adap2pinfo(adap, i); + + pi->first_qset = j; + pi->nqsets = nqsets; + j = pi->first_qset + nqsets; + + dev_info(&adap->pdev->dev, + "Port %d using %d queue sets.\n", i, nqsets); + } +} + static int __devinit cxgb_enable_msix(struct adapter *adap) { struct msix_entry entries[SGE_QSETS + 1]; @@ -2739,9 +2845,6 @@ static int __devinit init_one(struct pci_dev *pdev, pi = netdev_priv(netdev); pi->adapter = adapter; pi->rx_csum_offload = 1; - pi->nqsets = 1; - pi->first_qset = i; - pi->activity = 0; pi->port_id = i; netif_carrier_off(netdev); netdev->irq = pdev->irq; @@ -2818,6 +2921,8 @@ static int __devinit init_one(struct pci_dev *pdev, else if (msi > 0 && pci_enable_msi(pdev) == 0) adapter->flags |= USING_MSI; + set_nqsets(adapter); + err = sysfs_create_group(&adapter->port[0]->dev.kobj, &cxgb3_attr_group); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/